all messages for Guix-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
blob 9e1dac3e6ad955f24cb1dda42e50584cfea28924 188350 bytes (raw)
name: gnu/packages/audio.scm 	 # note: path name is non-authoritative(*)

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
 
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2016, 2017, 2018, 2019, 2020 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2015 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
;;; Copyright © 2015 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
;;; Copyright © 2015, 2016 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016, 2017, 2018, 2019 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016, 2017 Alex Griffin <a@ajgrf.com>
;;; Copyright © 2016 Nikita <nikita@n0.is>
;;; Copyright © 2016 Lukas Gradl <lgradl@openmailbox.org>
;;; Copyright © 2016, 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018, 2020 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2018 okapi <okapi@firemail.cc>
;;; Copyright © 2018, 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2018 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2018 Brett Gilio <brettg@gnu.org>
;;; Copyright © 2018, 2019 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2018 Thorsten Wilms <t_w_@freenet.de>
;;; Copyright © 2018 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2018 Brendan Tildesley <mail@brendan.scot>
;;; Copyright © 2019 Pierre Langlois <pierre.langlois@gmx.com>
;;; Copyright © 2019 Leo Famulari <leo@famulari.name>
;;; Copyright © 2019 Rutger Helling <rhelling@mykolab.com>
;;; Copyright © 2019 Arun Isaac <arunisaac@systemreboot.net>
;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
;;; Copyright © 2019, 2020 Alexandros Theodotou <alex@zrythm.org>
;;; Copyright © 2019 Christopher Lemmer Webber <cwebber@dustycloud.org>
;;; Copyright © 2019 Jan Wielkiewicz <tona_kosmicznego_smiecia@interia.pl>
;;; Copyright © 2019 Hartmt Goebel <h.goebel@crazy-compilers.com>
;;; Copyright © 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
;;; Copyright © 2020 Guillaume Le Vaillant <glv@posteo.net>
;;; Copyright © 2020 Jonathan Frederickson <jonathan@terracrypt.net>
;;; Copyright © 2020 Giacomo Leidi <goodoldpaul@autistici.org>
;;; Copyright © 2020 Vinicius Monego <monego@posteo.net>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages audio)
  #:use-module (gnu packages)
  #:use-module (gnu packages algebra)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages avahi)
  #:use-module (gnu packages backup)
  #:use-module (gnu packages base)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages check)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages curl)
  #:use-module (gnu packages dbm)
  #:use-module (gnu packages documentation)
  #:use-module (gnu packages elf)
  #:use-module (gnu packages emacs)
  #:use-module (gnu packages file)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages fltk)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages gnunet) ; libmicrohttpd
  #:use-module (gnu packages gperf)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages icu4c)
  #:use-module (gnu packages image)
  #:use-module (gnu packages libbsd)
  #:use-module (gnu packages libusb)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages llvm)
  #:use-module (gnu packages man)
  #:use-module (gnu packages maths)
  #:use-module (gnu packages mp3) ;taglib
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages music)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages networking)
  #:use-module (gnu packages onc-rpc)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages pulseaudio)  ;libsndfile, libsamplerate
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages rdf)
  #:use-module (gnu packages readline)
  #:use-module (gnu packages sdl)
  #:use-module (gnu packages serialization)
  #:use-module (gnu packages telephony)
  #:use-module (gnu packages linphone)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages valgrind)
  #:use-module (gnu packages video)
  #:use-module (gnu packages vim) ;xxd
  #:use-module (gnu packages webkit)
  #:use-module (gnu packages wxwidgets)
  #:use-module (gnu packages xiph)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages xorg)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system copy)
  #:use-module (guix build-system glib-or-gtk)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system meson)
  #:use-module (guix build-system python)
  #:use-module (guix build-system trivial)
  #:use-module (guix build-system waf)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (guix utils)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26))

(define-public opensles
  (package
    (name "opensles")
    (version "1.1.0")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/KhronosGroup/OpenSL-ES-Registry.git")
         (commit "ea5104bf37bf525c25e6ae2386586048179d0fda")))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0j5bm7h3ahz66f23i9abwc0y10agfkpksnj6y078x2nichq66h4f"))
       (patches
        (search-patches "opensles-add-license-file.patch"))))
    (build-system copy-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after 'install 'clean
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out")))
               (mkdir-p (string-append out "/etc"))
               (mkdir-p (string-append out "/include"))
               (mkdir-p (string-append out "/share"))
               (rename-file
                (string-append out "/api/1.1/OpenSLES_IID.c")
                (string-append out "/etc/OpenSLES_IID.c"))
               (rename-file
                (string-append out "/api/1.1/OpenSLES.h")
                (string-append out "/include/OpenSLES.h"))
               (rename-file
                (string-append out "/api/1.1/OpenSLES_Platform.h")
                (string-append out "/include/OpenSLES_Platform.h"))
               (rename-file
                (string-append out "/api/1.1/README.txt")
                (string-append out "/share/README.txt"))
               (rename-file
                (string-append out "/LICENSE.txt")
                (string-append out "/share/LICENSE.txt"))
               (for-each delete-file-recursively
                         (list
                          (string-append out "/api")
                          (string-append out "/specs")))
               (for-each delete-file
                         (list
                          (string-append out "/CODE_OF_CONDUCT.md")
                          (string-append out "/index.php")
                          (string-append out "/README.md"))))
             #t)))))
    (synopsis "Embedded Audio Acceleration")
    (description "OpenSLES is a royalty-free, cross-platform,
hardware-accelerated audio API tuned for embedded systems.  It provides a
standardized, high-performance, low-latency method to access audio
functionality for developers of native applications on embedded mobile
multimedia devices, enabling straightforward cross-platform deployment of
hardware and software audio capabilities, reducing implementation effort, and
promoting the market for advanced audio.")
    (home-page "https://www.khronos.org/opensles/")
    (license (license:non-copyleft "file:///LICENSE.txt"))))

(define-public wildmidi
  (package
    (name "wildmidi")
    (version "0.4.3")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/Mindwerks/wildmidi.git")
         (commit (string-append name "-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "01f4a9c5xlap5a4pkfnlgkzk5pjlk43zkq6fnw615ghya04g6hrl"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f ; No target
       #:configure-flags
       (list
        "-DWANT_ALSA=ON"
        "-DWANT_OSS=ON"
        "-DWANT_OPENAL=ON")))
    (inputs
     `(("alsa" ,alsa-lib)
       ("openal" ,openal)))
    (synopsis "Software Synthesizer")
    (description "WildMIDI is a simple software midi player which has a core
softsynth library that can be use with other applications.")
    (home-page "https://www.mindwerks.net/projects/wildmidi/")
    (license
     (list
      ;; Library.
      license:lgpl3+
      ;; Player.
      license:gpl3+))))

(define-public webrtc-audio-processing
  (package
    (name "webrtc-audio-processing")
    (version "0.3.1")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "http://freedesktop.org/software/pulseaudio/"
                       name "/" name "-" version ".tar.xz"))
       (sha256
        (base32 "1gsx7k77blfy171b6g3m0k0s0072v6jcawhmx1kjs9w5zlwdkzd0"))))
    (build-system gnu-build-system)
    (synopsis "WebRTC's Audio Processing Library")
    (description "WebRTC-Audio-Processing library based on Google's
implementation of WebRTC.")
    (home-page
     "https://freedesktop.org/software/pulseaudio/webrtc-audio-processing/")
    (license (license:non-copyleft "file:///COPYING"))))

(define-public vo-aacenc
  (package
    (name "vo-aacenc")
    (version "0.1.3")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://sourceforge.net/projects/opencore-amr/files/"
                       name "/" name "-" version ".tar.gz"))
       (sha256
        (base32 "0dhghm3c8pqrriwwyj5x9i0yf52fmdfijbgqqkvqvwarldvp86p5"))))
    (build-system gnu-build-system)
    (synopsis "VisualOn AAC Encoder")
    (description "VO-AACENC is the VisualOn implementation of Advanced Audio
Coding (AAC) encoder.")
    (home-page "https://sourceforge.net/projects/opencore-amr/")
    (license license:asl2.0)))

(define-public tinyalsa
  (package
    (name "tinyalsa")
    (version "1.1.1")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/tinyalsa/tinyalsa.git")
         (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0ajyvml5bnzvhiyyrn42gqwgg23ssxkfh09rvsnywhzxhd0xai4h"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ; No target
       #:phases
       (modify-phases %standard-phases
         (delete 'configure))
       #:make-flags
       (list
        (string-append "PREFIX=" (assoc-ref %outputs "out")))))
    (synopsis "ALSA interfacing library")
    (description "TinyALSA is a small library to interface with ALSA in the
Linux kernel.")
    (home-page "https://github.com/tinyalsa/tinyalsa")
    (license (license:non-copyleft "file:///NOTICE"))))

(define-public libopenmpt
  (package
    (name "libopenmpt")
    (version "0.5.1")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://download.openmpt.org/archive/libopenmpt/src/"
                       "libopenmpt-" version "+release.autotools.tar.gz"))
       (sha256
        (base32 "1vpalfsrkbx4vyrh1qy564lr91jwdxlbjivv5gzf8zcywxasf0xa"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("doxygen" ,doxygen)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa" ,alsa-lib)
       ("flac" ,flac)
       ("mpg123" ,mpg123)
       ("portaudio" ,portaudio)
       ("pulseaudio" ,pulseaudio)
       ("sdl2" ,sdl2)
       ("sndfile" ,libsndfile)
       ("vorbis" ,libvorbis)
       ("zlib" ,zlib)))
    (synopsis "Audio tracking library")
    (description "LibOpenMPT is a cross-platform C++ and C module playback
library.  It is based on the player code of the Open ModPlug Tracker project.")
    (home-page "https://openmpt.org/")
    (license (license:non-copyleft "file:///LICENSE"))))

(define-public libofa
  (package
    (name "libofa")
    (version "0.9.3")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://storage.googleapis.com/"
                       "google-code-archive-downloads/v2/code.google.com/"
                       "musicip-libofa/" name "-" version ".tar.gz"))
       (sha256
        (base32 "184ham039l7lwhfgg0xr2vch2xnw1lwh7sid432mh879adhlc5h2"))
       (patches
        (search-patches
         "libofa-ftbfs-1.diff"
         "libofa-curl.diff"
         "libofa-ftbfs-2.diff"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("curl" ,curl)
       ("expat" ,expat)))
    (propagated-inputs
     `(("fftw" ,fftw)))
    (synopsis "Open Fingerprint Architecture")
    (description "LibOFA is an audio fingerprint library, created and provided
by MusicIP.")
    (home-page "https://code.google.com/archive/p/musicip-libofa/")
    (license license:gpl2+)))

(define-public faac
  (package
    (name "faac")
    (version "1.30")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://sourceforge.net/projects/faac/files/faac-src/"
                       "faac-1.30/faac-1_30.tar.gz/download"))
       (sha256
        (base32 "1lmj0dib3mjp84jhxc5ddvydkzzhb0gfrdh3ikcidjlcb378ghxd"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)))
    (synopsis "Freeware Advanced Audio Coder")
    (description "FAAC is an MPEG-4 and MPEG-2 AAC encoder.")
    (home-page "https://www.audiocoding.com/faac.html")
    (license
     (list
      ;; ISO MPEG-4 reference code.
      license:gpl2+
      ;; Others.
      license:lgpl2.0+))))

(define-public libtimidity
  (package
    (name "libtimidity")
    (version "0.2.6")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://sourceforge.net/projects/" name "/files/"
                       name "/" version "/" name "-" version ".tar.gz"))
       (sha256
        (base32 "0p2px0m907gi1zpdr0l9adq25jl89j85c11ag9s2g4yc6n1nhgfm"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f))       ; XXX: LibTiMidity could not be initialised
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("ao" ,ao)))
    (synopsis "MIDI to WAVE converter library")
    (description "LibTiMidity is a MIDI to WAVE converter library that uses
Gravis Ultrasound-compatible patch files to generate digital audio data from
General MIDI files.")
    (home-page "http://libtimidity.sourceforge.net/")
    (license
     ;; This project is dual-licensed.
     ;; Either of the following licenses can be exercised.
     (list
      license:lgpl2.1+
      license:artistic2.0))))

(define-public vo-amrwbenc
  (package
    (name "vo-amrwbenc")
    (version "0.1.3")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://sourceforge.net/projects/opencore-amr/files/"
                       name "/" name "-" version ".tar.gz"))
       (sha256
        (base32 "0klx3nkidc6b8aawchpk19n3xlrzgnc046w4gd0rdqphw28v6ljn"))))
    (build-system gnu-build-system)
    (synopsis "Adaptive Multi Rate Codec")
    (description "VO-AMR is a library of VisualOn implementation of
Adaptive Multi Rate Narrowband and Wideband (AMR-NB and AMR-WB) speech codec.")
    (home-page "https://sourceforge.net/projects/opencore-amr/")
    (license license:asl2.0)))

(define-public opencore-amr
  (package
    (name "opencore-amr")
    (version "0.1.5")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://sourceforge.net/projects/opencore-amr/files/"
                       name "/" name "-" version ".tar.gz"))
       (sha256
        (base32 "0hfk9khz3by0119h3jdwgdfd7jgkdbzxnmh1wssvylgnsnwnq01c"))))
    (build-system gnu-build-system)
    (synopsis "Adaptive Multi Rate Codec")
    (description "OpenCore-AMR is a library of OpenCORE Framework
implementation of Adaptive Multi Rate Narrowband and Wideband
(AMR-NB and AMR-WB) speech codec.")
    (home-page "https://sourceforge.net/projects/opencore-amr/")
    (license license:asl2.0)))

(define-public alsa-modular-synth
  (package
    (name "alsa-modular-synth")
    (version "2.1.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/alsamodular/alsamodular"
                                  "/" version "/ams-" version ".tar.bz2"))
              (sha256
               (base32
                "1azbrhpfk4nnybr7kgmc7w6al6xnzppg853vas8gmkh185kk11l0"))
              (patches
               (search-patches "alsa-modular-synth-fix-vocoder.patch"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags
       '("--enable-qt5"
         "CXXFLAGS=-std=gnu++11")
       #:phases
       (modify-phases %standard-phases
         (add-after 'set-paths 'hide-default-gcc
           (lambda* (#:key inputs #:allow-other-keys)
             (let ((gcc (assoc-ref inputs "gcc")))
               ;; Remove the default GCC from CPLUS_INCLUDE_PATH to prevent
               ;; conflicts with the GCC 5 input.
               (setenv "CPLUS_INCLUDE_PATH"
                       (string-join
                        (delete (string-append gcc "/include/c++")
                                (string-split (getenv "CPLUS_INCLUDE_PATH") #\:))
                        ":"))
               #t)))
         ;; Insert an extra space between linker flags.
         (add-before 'configure 'add-missing-space
           (lambda _
             (substitute* "configure"
               (("LIBS\\+=\\$LIBSsave") "LIBS+=\" $LIBSsave\"")
               (("CFLAGS\\+=\\$CFLAGSsave") "CFLAGS+=\" $CFLAGSsave\""))
             #t)))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ;; We cannot use zita-alsa-pcmi (the successor of clalsadrv) due to
       ;; license incompatibility.
       ("clalsadrv" ,clalsadrv)
       ("fftw" ,fftw)
       ("jack" ,jack-1)
       ("ladspa" ,ladspa)
       ("liblo" ,liblo)
       ("qtbase" ,qtbase)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("qttools" ,qttools)
       ("gcc@5" ,gcc-5)))
    (home-page "http://alsamodular.sourceforge.net/")
    (synopsis "Realtime modular synthesizer and effect processor")
    (description
     "AlsaModularSynth is a digital implementation of a classical analog
modular synthesizer system.  It uses virtual control voltages to control the
parameters of the modules.  The control voltages which control the frequency
e.g. of the VCO (Voltage Controlled Oscillator) and VCF (Voltage Controlled
Filter) modules follow the convention of 1V / Octave.")
    (license license:gpl2)))

(define-public aubio
  (package
    (name "aubio")
    (version "0.4.9")
    (source (origin
             (method url-fetch)
             (uri (string-append
                   "https://aubio.org/pub/aubio-" version ".tar.bz2"))
             (sha256
              (base32
               "1npks71ljc48w6858l9bq30kaf5nph8z0v61jkfb70xb9np850nl"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:configure-flags
       (list
        (string-append "LDFLAGS=-Wl,-rpath=" (assoc-ref %outputs "out") "/lib")
        "--enable-fftw3f"
        "--enable-jack"
        "--enable-sndfile"
        "--enable-samplerate"
        "--enable-avcodec")
       #:python ,python-2))
    (inputs
     `(("jack" ,jack-1)
       ("libsndfile" ,libsndfile)
       ("libsamplerate" ,libsamplerate)
       ("fftwf" ,fftwf)
       ("ffmpeg" ,ffmpeg))) ; for libavcodec
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://aubio.org/")
    (synopsis "Library for audio labelling")
    (description
     "aubio is a tool designed for the extraction of annotations from audio
signals.  Its features include segmenting a sound file before each of its
attacks, performing pitch detection, tapping the beat and producing MIDI
streams from live audio.")
    (license license:gpl3+)))

(define (ardour-rpath-phase major-version)
  `(lambda* (#:key outputs #:allow-other-keys)
     (let ((libdir (string-append (assoc-ref outputs "out")
                                  "/lib/ardour" ,major-version)))
       (substitute* "wscript"
         (("linker_flags = \\[\\]")
          (string-append "linker_flags = [\""
                         "-Wl,-rpath="
                         libdir ":"
                         libdir "/backends" ":"
                         libdir "/engines" ":"
                         libdir "/panners" ":"
                         libdir "/surfaces" ":"
                         libdir "/vamp" "\"]"))))
     #t))

(define-public ardour
  (package
    (name "ardour")
    (version "5.12")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://git.ardour.org/ardour/ardour.git")
                    (commit version)))
              (snippet
               ;; Ardour expects this file to exist at build time.  The revision
               ;; is the output of
               ;;    git describe HEAD | sed 's/^[A-Za-z]*+//'
               `(call-with-output-file
                    "libs/ardour/revision.cc"
                  (lambda (port)
                    (format port ,(string-append "#include \"ardour/revision.h\"
namespace ARDOUR { const char* revision = \"" version "\" ; }"))
                    #t)))
              (sha256
               (base32
                "0mla5lm51ryikc2rrk53max2m7a5ds6i1ai921l2h95wrha45nkr"))
              (file-name (string-append name "-" version))))
    (build-system waf-build-system)
    (arguments
     `(#:configure-flags '("--cxx11"          ; required by gtkmm
                           "--no-phone-home"  ; don't contact ardour.org
                           "--freedesktop"    ; build .desktop file
                           "--test")          ; build unit tests
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'set-rpath-in-LDFLAGS
          ,(ardour-rpath-phase (version-major version)))
         (add-after 'install 'install-freedesktop-files
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out   (assoc-ref outputs "out"))
                    (share (string-append out "/share"))
                    (ver   ,(version-major version)))
               (for-each
                 (lambda (size)
                   (let ((dir (string-append share "/icons/hicolor/"
                                             size "x" size "/apps")))
                     (mkdir-p dir)
                     (copy-file
                       (string-append "gtk2_ardour/resources/Ardour-icon_"
                                      size "px.png")
                       (string-append dir "/ardour" ver ".png"))))
                 '("16" "22" "32" "48" "256"))
               (install-file (string-append "build/gtk2_ardour/ardour"
                                            ver ".desktop")
                             (string-append share "/applications/"))
               (install-file (string-append "build/gtk2_ardour/ardour"
                                            ver ".appdata.xml")
                             (string-append share "/appdata/")))
             #t)))
       #:test-target "test"
       #:python ,python-2))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("atkmm" ,atkmm)
       ("aubio" ,aubio)
       ("boost" ,boost)
       ("cairomm" ,cairomm)
       ("curl" ,curl)
       ("eudev" ,eudev)
       ("fftw" ,fftw)
       ("fftwf" ,fftwf)
       ("flac" ,flac)
       ("glibmm" ,glibmm)
       ("gtkmm" ,gtkmm-2)
       ("jack" ,jack-1)
       ("libarchive" ,libarchive)
       ("libart-lgpl" ,libart-lgpl)
       ("libgnomecanvasmm" ,libgnomecanvasmm)
       ("liblo" ,liblo)
       ("libogg" ,libogg)
       ("libsamplerate" ,libsamplerate)
       ("libsndfile" ,libsndfile)
       ("libusb" ,libusb)
       ("libvorbis" ,libvorbis)
       ("libxml2" ,libxml2)
       ("lilv" ,lilv)
       ("lrdf" ,lrdf)
       ("lv2" ,lv2)
       ("pangomm" ,pangomm)
       ("python-rdflib" ,python-rdflib)
       ("readline" ,readline)
       ("redland" ,redland)
       ("rubberband" ,rubberband)
       ("serd" ,serd)
       ("sord" ,sord)
       ("sratom" ,sratom)
       ("suil" ,suil)
       ("taglib" ,taglib)
       ("vamp" ,vamp)))
    (native-inputs
     `(("cppunit" ,cppunit)
       ("gettext" ,gettext-minimal)
       ("itstool" ,itstool)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)))
    (home-page "https://ardour.org")
    (synopsis "Digital audio workstation")
    (description
     "Ardour is a multi-channel digital audio workstation, allowing users to
record, edit, mix and master audio and MIDI projects.  It is targeted at audio
engineers, musicians, soundtrack editors and composers.")
    (license license:gpl2+)))

(define-public audacity
  (package
    (name "audacity")
    (version "2.4.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/audacity/audacity")
             (commit (string-append "Audacity-" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1xk0piv72d2xd3p7igr916fhcbrm76fhjr418k1rlqdzzg1hfljn"))
       (patches (search-patches "audacity-build-with-system-portaudio.patch"))
       (modules '((guix build utils)))
       (snippet
        ;; Remove bundled libraries.
        '(begin
           (for-each
            (lambda (dir)
              (delete-file-recursively (string-append "lib-src/" dir)))
            '("expat" "ffmpeg" "lame" "libflac" "libid3tag" "libmad" "libogg"
              "libsndfile" "libsoxr" "libvamp" "libvorbis" "lv2"
              "portaudio-v19" "portmidi" "soundtouch" "twolame"
              ;; FIXME: these libraries have not been packaged yet:
              ;; "libnyquist"
              ;; "libscorealign"
              ;; "libwidgetextra"
              ;; "portburn"
              ;; "portsmf"
              ;; "portmixer"

              ;; FIXME: we have this library, but it differs in that the Slide
              ;; class does not have a member "getInverseStretchedTime".
              ;; "sbsms"
              ))
           #t))))
    (build-system glib-or-gtk-build-system)
    (inputs
     `(("wxwidgets" ,wxwidgets)
       ("gtk+" ,gtk+)
       ("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("expat" ,expat)
       ("ffmpeg" ,ffmpeg)
       ("lame" ,lame)
       ("flac" ,flac)
       ("libid3tag" ,libid3tag)
       ("libmad" ,libmad)
       ;;("libsbsms" ,libsbsms)         ;bundled version is modified
       ("libsndfile" ,libsndfile)
       ("soundtouch" ,soundtouch)
       ("soxr" ,soxr)                   ;replaces libsamplerate
       ("twolame" ,twolame)
       ("vamp" ,vamp)
       ("libvorbis" ,libvorbis)
       ("lv2" ,lv2)
       ("lilv" ,lilv)                   ;for lv2
       ("suil" ,suil)                   ;for lv2
       ("portaudio" ,portaudio)
       ("portmidi" ,portmidi)))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("gettext" ,gettext-minimal)     ;for msgfmt
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)
       ("python" ,python-2)
       ("which" ,which)))
    (arguments
     `(#:configure-flags
       (let ((libid3tag (assoc-ref %build-inputs "libid3tag"))
             (libmad (assoc-ref %build-inputs "libmad"))
             (portmidi (assoc-ref %build-inputs "portmidi")))
         (list
          ;; Loading FFmpeg dynamically is problematic.
          "--disable-dynamic-loading"
          ;; SSE instructions are available on Intel systems only.
          ,@(if (any (cute string-prefix? <> (or (%current-target-system)
                                                 (%current-system)))
                    '("x86_64" "i686"))
              '()
              '("--enable-sse=no"))
          ;; portmidi, libid3tag and libmad provide no .pc files, so
          ;; pkg-config fails to find them.  Force their inclusion.
          (string-append "ID3TAG_CFLAGS=-I" libid3tag "/include")
          (string-append "ID3TAG_LIBS=-L" libid3tag "/lib -lid3tag -lz")
          (string-append "LIBMAD_CFLAGS=-I" libmad "/include")
          (string-append "LIBMAD_LIBS=-L" libmad "/lib -lmad")
          (string-append "PORTMIDI_CFLAGS=-I" portmidi "/include")
          (string-append "PORTMIDI_LIBS=-L" portmidi "/lib -lportmidi")
          "EXPAT_USE_SYSTEM=yes"
          "FFMPEG_USE_SYSTEM=yes"
          "LAME_USE_SYSTEM=yes"
          "LIBFLAC_USE_SYSTEM=yes"
          "LIBID3TAG_USE_SYSTEM=yes"
          "LIBMAD_USE_SYSTEM=yes"
          "USE_LOCAL_LIBNYQUIST="      ;not packaged yet
          ;;"LIBSBSMS_USE_SYSTEM=yes"  ;bundled version is patched
          "LIBSNDFILE_USE_SYSTEM=yes"
          "LIBSOUNDTOUCH_USE_SYSTEM=yes"
          "LIBSOXR_USE_SYSTEM=yes"
          "LIBTWOLAME_USE_SYSTEM=yes"
          "LIBVAMP_USE_SYSTEM=yes"
          "LIBVORBIS_USE_SYSTEM=yes"
          "LV2_USE_SYSTEM=yes"
          "PORTAUDIO_USE_SYSTEM=yes"))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-sbsms-check
           (lambda _
             ;; This check is wrong: there is no 2.2.0 release; not even the
             ;; bundled sources match this release string.
             (substitute* '("m4/audacity_checklib_libsbsms.m4"
                            "configure")
               (("sbsms >= 2.2.0") "sbsms >= 2.0.0"))
             #t))
         (add-after 'unpack 'use-upstream-headers
           (lambda* (#:key inputs #:allow-other-keys)
             (substitute* '("src/NoteTrack.cpp"
                            "src/AudioIO.cpp"
                            "src/AudioIO.h"
                            "src/AudioIOBase.cpp")
               (("../lib-src/portmidi/pm_common/portmidi.h") "portmidi.h")
               (("../lib-src/portmidi/porttime/porttime.h") "porttime.h"))
             (substitute* "src/prefs/MidiIOPrefs.cpp"
               (("../../lib-src/portmidi/pm_common/portmidi.h") "portmidi.h"))
             #t)))
       ;; The test suite is not "well exercised" according to the developers,
       ;; and fails with various errors.  See
       ;; <http://sourceforge.net/p/audacity/mailman/message/33524292/>.
       #:tests? #f))
    (home-page "https://www.audacityteam.org/")
    (synopsis "Software for recording and editing sounds")
    (description
     "Audacity is a multi-track audio editor designed for recording, playing
and editing digital audio.  It features digital effects and spectrum analysis
tools.")
    (license license:gpl2+)))

(define-public audiofile
  (package
    (name "audiofile")
    (version "0.3.6")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://audiofile.68k.org/audiofile-" version ".tar.gz"))
       (sha256
        (base32 "0rb927zknk9kmhprd8rdr4azql4gn2dp75a36iazx2xhkbqhvind"))
       (patches
        ;; CVE references according to nixpgs
        (search-patches
         "audiofile-fix-datatypes-in-tests.patch"
         "audiofile-fix-sign-conversion.patch"
         "audiofile-hurd.patch"
         "audiofile-CVE-2015-7747.patch"
         ;; CVE-2017-6829:
         "audiofile-Fix-index-overflow-in-IMA.cpp.patch"
         ;; CVE-2017-6827, CVE-2017-6828, CVE-2017-6832, CVE-2017-6835,
         ;; CVE-2017-6837:
         "audiofile-Check-the-number-of-coefficients.patch"
         ;; CVE-2017-6839:
         "audiofile-Fix-overflow-in-MSADPCM-decodeSam.patch"
         ;; CVE-2017-6830, CVE-2017-6834, CVE-2017-6836, CVE-2017-6838:
         "audiofile-Fix-multiply-overflow-sfconvert.patch"
         "audiofile-signature-of-multiplyCheckOverflow.patch"
         ;; CVE-2017-6831:
         "audiofile-Fail-on-error-in-parseFormat.patch"
         ;; CVE-2017-6833:
         "audiofile-division-by-zero-BlockCodec-runPull.patch"
         "audiofile-CVE-2018-13440.patch"
         "audiofile-CVE-2018-17095.patch"))))
    (build-system gnu-build-system)
    (inputs
     `(("alsa-lib" ,alsa-lib)))
    (home-page "https://audiofile.68k.org/")
    (synopsis "Library to handle various audio file formats")
    (description "This is an open-source version of SGI's audiofile library.
It provides a uniform programming interface for processing of audio data to
and from audio files of many common formats.

Currently supported file formats include AIFF/AIFF-C, WAVE, and NeXT/Sun
.snd/.au, BICS, and raw data.  Supported compression formats are currently
G.711 mu-law and A-law.")
    (license license:lgpl2.1+)))

(define-public autotalent
  (package
    (name "autotalent")
    (version "0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://tombaran.info/autotalent-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "1n04qm66f14195ly6gsy3ra7v2j7zad5n19d8dwfmh0qs6h9hphh"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no check target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr/lib64/ladspa")
                (string-append (assoc-ref outputs "out") "/lib/ladspa")))
             #t)))))
    (inputs
     `(("ladspa" ,ladspa)))
    (home-page "http://tombaran.info/autotalent.html")
    (synopsis "Pitch-correction LADSPA audio plugin")
    (description
     "Autotalent is a LADSPA plugin for real-time pitch-correction.  Among its
controls are allowable notes, strength of correction, LFO for vibrato and
formant warp.")
    ;; All code except the FFT routine is licensed under GPLv2+.
    ;; The FFT routine is under BSD-3.
    (license license:gpl2+)))

(define-public azr3
  (package
    (name "azr3")
    (version "1.2.3")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://savannah/ll-plugins/azr3-jack-"
                                  version
                                  ".tar.bz2"))
              (sha256
               (base32
                "18mdw6nc0vgj6k9rsy0x8w64wvzld0frqshrxxbxfj9qi9843vlc"))
              (patches (search-patches "azr3.patch"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no check target
       #:make-flags
       (list "LV2PEG=ttl2c"
             (string-append "prefix=" %output)
             (string-append "pkgdatadir=" %output "/share/azr3-jack"))
       #:phases
       (modify-phases %standard-phases
         (add-before 'install 'fix-timestamp
           (lambda _
             (let ((early-1980 315619200)) ; 1980-01-02 UTC
               (utime "azr3.1" early-1980 early-1980))
             #t)))))
    (inputs
     `(("gtkmm" ,gtkmm-2)
       ("lvtk" ,lvtk)
       ("jack" ,jack-1)
       ("lash" ,lash)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://ll-plugins.nongnu.org/azr3/")
    (synopsis "Tonewheel organ synthesizer")
    (description
     "AZR-3 is a port of the free VST plugin AZR-3.  It is a tonewheel organ
with drawbars, distortion and rotating speakers.  The organ has three
sections, two polyphonic sections with nine drawbars each and one monophonic
bass section with five drawbars.  A standalone JACK application and LV2
plugins are provided.")
    (license license:gpl2)))

(define-public calf
  (package
    (name "calf")
    (version "0.90.3")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://calf-studio-gear.org/files/calf-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "17x4hylgq4dn9qycsdacfxy64f5cv57n2qgkvsdp524gnqzw4az3"))))
    (build-system gnu-build-system)
    (inputs
     `(("fluidsynth" ,fluidsynth)
       ("expat" ,expat)
       ("glib" ,glib)
       ("gtk" ,gtk+-2)
       ("cairo" ,cairo)
       ("lash" ,lash)
       ("jack" ,jack-1)
       ("lv2" ,lv2)
       ("ladspa" ,ladspa)
       ("fftw" ,fftw)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (native-search-paths
     (list (search-path-specification
            (variable "LV2_PATH")
            (files '("lib/lv2")))))
    (home-page "http://calf.sourceforge.net/")
    (synopsis "Audio plug-in pack for LV2 and JACK environments")
    (description
     "Calf Studio Gear is an audio plug-in pack for LV2 and JACK environments.
The suite contains lots of effects (delay, modulation, signal processing,
filters, equalizers, dynamics, distortion and mastering effects),
instruments (SF2 player, organ simulator and a monophonic synthesizer) and
tools (analyzer, mono/stereo tools, crossovers).")
    ;; calfjackhost is released under GPLv2+
    ;; The plugins are released under LGPLv2.1+
    (license (list license:lgpl2.1+ license:gpl2+))))

(define-public caps-plugins-lv2
  (package
    (name "caps-plugins-lv2")
    (version "0.9.24") ; version that has been ported.
    (source
     (origin
       ;; The Github project hasn't tagged a release.
       (method git-fetch)
       (uri (git-reference
             ;; Actually https://github.com/moddevices/caps-lv2.git, but it's
             ;; missing fixes for newer glibc, so using the origin of a pull
             ;; request regarding this issue:
             (url "https://github.com/jujudusud/caps-lv2")
             (commit "9c9478b7fbd8f9714f552ebe2a6866398b0babfb")))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1idfnazin3cca41zw1a8vwgnxjnkrap7bxxjamjqvgpmvydgcam1"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no check target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* (find-files "plugins" "Makefile")
               (("/usr/local")(assoc-ref outputs "out")))
             #t)))))
    (inputs
     `(("lv2" ,lv2)))
    ;; home-page of the original LADSPA version: http://quitte.de/dsp/caps.html
    (home-page "https://github.com/moddevices/caps-lv2")
    (synopsis "LV2 port of the CAPS audio plugin colection")
    (description
     "LV2 port of CAPS, a collection of audio plugins comprising basic virtual
guitar amplification and a small range of classic effects, signal processors and
generators of mostly elementary and occasionally exotic nature.")
    (license license:gpl3+)))

(define-public infamous-plugins
  (package
    (name "infamous-plugins")
    (version "0.2.04")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/ssj71/infamousPlugins")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0hmqk80w4qxq09iag7b7srf2g0wigkyhzq0ywxvhz2iz0hq9k0dh"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f                      ; there are no tests
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'remove-compiler-flags
           (lambda _
             (substitute* (find-files "." "CMakeLists.txt")
               (("-msse2 -mfpmath=sse") ""))
             #t)))))
    (inputs
     `(("cairo" ,cairo)
       ("fftwf" ,fftwf)
       ("lv2" ,lv2)
       ("ntk" ,ntk)
       ("zita-resampler" ,zita-resampler)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://ssj71.github.io/infamousPlugins")
    (synopsis "LV2 plugins for live use")
    (description
     "The infamous plugins are a collection of LV2 audio plugins for live
performances.  The plugins include a cellular automaton synthesizer, an
envelope follower, distortion effects, tape effects and more.")
    (license license:gpl2+)))

(define-public swh-plugins
  (package
    (name "swh-plugins")
    (version "0.4.17")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/swh/ladspa")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1c98z2xxz9pgcb4dg99gz8qrylh5cnag0j18a52d88ifsy24isvq"))))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("gettext" ,gettext-minimal) ;for autopoint
       ("libtool" ,libtool)
       ("perl" ,perl)
       ("pkg-config" ,pkg-config)
       ("which" ,which)))
    (inputs
     `(("fftwf" ,fftwf)
       ("perl-xml-parser" ,perl-xml-parser)))
    (build-system gnu-build-system)
    (home-page "http://plugin.org.uk")
    (synopsis "The SWH Plugins package for the LADSPA plugin system")
    (description "This package provides Steve Harris's LADSPA plugins.")
    (license license:gpl2+)))

(define-public swh-plugins-lv2
  (package
    (name "swh-plugins-lv2")
    (version "1.0.16")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/swh/lv2")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0y7nnww864mm4k6ayy2lhcws3wlbhb2gkyjbrwk921fvc18qk9mz"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no check target
       #:make-flags (list "CC=gcc"
                          (string-append "PREFIX="
                                         (assoc-ref %outputs "out")))
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-after 'unpack 'patch-makefile-and-enter-directory
           ;; The default install target doesn't install, but the
           ;; "install-system" target does.
           (lambda _
             (substitute* "Makefile"
               (("install:") "install: install-system"))
             #t)))))
    (inputs
     `(("lv2" ,lv2)
       ("fftwf" ,fftwf)))
    (native-inputs
     `(("libxslt" ,libxslt)
       ("pkg-config" ,pkg-config)))
    (home-page "http://plugin.org.uk")
    (synopsis "SWH plugins in LV2 format")
    (description
     "Swh-plugins-lv2 is a collection of audio plugins in LV2 format.  Plugin
classes include: dynamics (compressor, limiter), time (delay, chorus,
flanger), ringmodulator, distortion, filters, pitchshift, oscillators,
emulation (valve, tape), bit fiddling (decimator, pointer-cast), etc.")
    (license license:gpl3+)))

(define-public tao
  (package
    (name "tao")
    (version "1.0-beta-10May2006")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/taopm/Tao/"
                                  "tao-" version "/"
                                  "tao-" version ".tar.gz"))
              (sha256
               (base32
                "156py3g6mmglldfd0j76bn7n242hdwf49diaprjpj7crp8vgf2pz"))
              (patches
               (search-patches "tao-add-missing-headers.patch"
                               "tao-fix-parser-types.patch"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  (substitute* "configure"
                    (("SHELL=/bin/sh") ""))
                  #t))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags '("TAO_RELEASE=-beta")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-references
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "user-scripts/tao.in"
               (("taoparse")
                (string-append (assoc-ref outputs "out") "/bin/taoparse"))
               (("grep") (which "grep"))
               (("sed -f \\$distdir/user-scripts/")
                (string-append (which "sed") " -f $distdir/"))
               (("distdir=.*")
                (string-append "distdir="
                               (assoc-ref outputs "out") "/share/tao")))
             #t))
         (add-after 'install 'install-extra-files
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (share (string-append out "/share/tao/"))
                    (inc (string-append out "/include/tao/")))
               (mkdir-p share)
               (mkdir-p inc)
               (install-file "user-scripts/error.parse" share)
               (copy-recursively "examples" (string-append share "examples"))
               (for-each (lambda (file) (install-file file inc))
                         (find-files "include" "\\.h"))
               #t))))))
    (inputs
     `(("audiofile" ,audiofile)
       ("libxi" ,libxi)
       ("libxmu" ,libxmu)
       ("mesa" ,mesa)
       ("glut" ,freeglut)
       ("flex" ,flex)
       ("bison" ,bison)
       ("sed" ,sed)
       ("grep" ,grep)))
    (home-page "http://taopm.sourceforge.net/")
    (synopsis "Sound Synthesis with Physical Models")
    (description "Tao is a software package for sound synthesis using physical
models.  It provides a virtual acoustic material constructed from masses and
springs which can be used as the basis for building quite complex virtual
musical instruments.  Tao comes with a synthesis language for creating and
playing instruments and a C++ API for those who would like to use it as an
object library.")
    (license license:gpl2+)))

(define-public csound
  (package
    (name "csound")
    (version "6.14.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/csound/csound")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1sr9knfhbm2m0wpkjq2l5n471vnl51wy4p6j4m95zqybimzb4s2j"))))
    (build-system cmake-build-system)
    (native-inputs
     `(("bison" ,bison)
       ("flex" ,flex)
       ("gettext" ,gettext-minimal)
       ("zlib" ,zlib)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("boost" ,boost)
       ("jack" ,jack-1)
       ("ladspa" ,ladspa)
       ("liblo" ,liblo)
       ("libsndfile" ,libsndfile)
       ("pulseaudio" ,pulseaudio)))
    (home-page "https://csound.com/")
    (synopsis "Sound and music computing system")
    (description
     "Csound is a user-programmable and user-extensible sound processing
language and software synthesizer.")
    (license license:lgpl2.1+)))

(define-public clalsadrv
  (package
    (name "clalsadrv")
    (version "2.0.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/clalsadrv-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "0bsacx3l9065gk8g4137qmz2ij7s9x06aldvacinzlcslw7bd1kq"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-makefile-and-enter-directory
           (lambda _
             (substitute* "libs/Makefile"
               (("/sbin/ldconfig") "true")
               (("^LIBDIR =.*") "LIBDIR = lib\n"))
             (chdir "libs")
             #t))
         (add-after 'install 'install-symlink
           (lambda _
             (symlink "libclalsadrv.so"
                      (string-append (assoc-ref %outputs "out")
                                     "/lib/libclalsadrv.so.2"))
             #t))
         ;; no configure script
         (delete 'configure))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("fftw" ,fftw)))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "C++ wrapper around the ALSA API")
    (description
     "clalsadrv is a C++ wrapper around the ALSA API simplifying access to
ALSA PCM devices.")
    (license license:gpl2+)))

(define-public amb-plugins
  (package
    (name "amb-plugins")
    (version "0.8.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/AMB-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "0x4blm4visjqj0ndqr0cg776v3b7lvplpc8cgi9n51llhavn0jpl"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory-and-tool-paths
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr/lib/ladspa")
                (string-append (assoc-ref outputs "out") "/lib/ladspa"))
               (("/usr/bin/install") (which "install"))
               (("/bin/rm") "#"))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA ambisonics plugins")
    (description
     "The AMB plugins are a set of LADSPA ambisonics plugins, mainly to be
used within Ardour.  Features include: mono and stereo to B-format panning,
horizontal rotator, square, hexagon and cube decoders.")
    (license license:gpl2+)))

(define-public mcp-plugins
  (package
    (name "mcp-plugins")
    (version "0.4.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/MCP-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "06a9r1l85jmg7l1cvc3788mk8ra0xagjfy1rmhw3b80y4n0vlnvc"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "Chorus, phaser, and vintage high-pass and low-pass filters")
    (description
     "This package provides various LADSPA plugins.  @code{cs_chorus} and
@code{cs_phaser} provide chorus and phaser effects, respectively;
@code{mvclpf24} provides four implementations of the low-pass filter used in
vintage Moog synthesizers; @code{mvchpf24} is based on the voltage-controlled
high-pass filter by Robert Moog.  The filters attempt to accurately emulate
the non-linear circuit elements of their original analog counterparts.")
    (license license:gpl2+)))

(define-public rev-plugins
  (package
    (name "rev-plugins")
    (version "0.7.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/REV-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "1ikpinxm00pkfi259bnkzhsy3miagrjgdihaaf5x4v7zac29j3g7"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA reverb plugin")
    (description
     "This package provides a stereo reverb LADSPA plugin based on the
well-known greverb.")
    (license license:gpl2+)))

(define-public fil-plugins
  (package
    (name "fil-plugins")
    (version "0.3.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/FIL-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "1scfv9j7jrp50r565haa4rvxn1vk2ss86xssl5qgcr8r45qz42qw"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA four-band parametric equalizer plugin")
    (description
     "This package provides a LADSPA plugin for a four-band parametric
equalizer.  Each section has an active/bypass switch, frequency, bandwidth and
gain controls.  There is also a global bypass switch and gain control.

The 2nd order resonant filters are implemented using a Mitra-Regalia style
lattice filter, which is stable even while parameters are being changed.

All switches and controls are internally smoothed, so they can be used @code{live}
without any clicks or zipper noises.  This makes this plugin suitable for use
in systems that allow automation of plugin control ports, such as Ardour, or
for stage use.")
    (license license:gpl2+)))

(define-public ste-plugins
  (package
    (name "ste-plugins")
    (version "0.0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/STE-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "0s3c9w5xihs87cnd1lh9xgj3maabjdyh6bl766qp5lhkg3ax8zy6"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA stereo width plugin")
    (description
     "This package provides a LADSPA plugin to manipulate the stereo width of
audio signals.")
    (license license:gpl2+)))

(define-public vco-plugins
  (package
    (name "vco-plugins")
    (version "0.3.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/VCO-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "1xzqdg3b07r7zww05y9bb737l9dxvfkv28m3fyak1aazaci3rsgl"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out"))
               (("/bin/cp") (which "cp")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA plugin for synthesizer oscillators")
    (description
     "The @code{blvco} LADSPA plugin provides three anti-aliased oscillators:

@enumerate
@item Pulse-VCO, a dirac pulse oscillator with flat amplitude spectrum
@item Saw-VCO, a sawtooth oscillator with 1/F amplitude spectrum
@item Rec-VCO, a square / rectangle oscillator
@end enumerate\n

All oscillators are low-pass filtered to provide waveforms similar to the
output of analog synthesizers such as the Moog Voyager.")
    (license license:gpl2+)))

(define-public wah-plugins
  (package
    (name "wah-plugins")
    (version "0.1.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/WAH-plugins-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "1wkbjarxdhjixkh7d5abralj11dj2xxg644fz3ycd7qyfgfvjfgd"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA Autowah effect plugin")
    (description
     "This package provides a LADSPA plugin for a Wah effect with envelope
follower.")
    (license license:gpl2+)))

(define-public g2reverb
  (package
    (name "g2reverb")
    (version "0.7.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/g2reverb-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "18wb8vj1kky5glr76s34awbi8qzplsmf3wjbd7a12hfv4j0bkwrj"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:phases
       (modify-phases %standard-phases
         ;; no configure script
         (delete 'configure)
         (add-before 'install 'prepare-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
             #t))
         (add-after 'unpack 'override-target-directory
           (lambda* (#:key outputs #:allow-other-keys)
             (substitute* "Makefile"
               (("/usr") (assoc-ref outputs "out")))
             #t)))))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "LADSPA stereo reverb plugin")
    (description
     "This package provides a LADSPA plugin for a stereo reverb effect.")
    (license license:gpl2+)))

(define-public fluidsynth
  (package
    (name "fluidsynth")
    (version "2.1.4")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/FluidSynth/fluidsynth")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1r3khwyw57ybg5m4x0rvdzq7hgw2484sd52k6bm19akbw8yicfna"))))
    (build-system cmake-build-system)
    (arguments
     '(#:tests? #f                      ; no check target
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-libdir
           (lambda _
             ;; Install libraries to /lib, not /lib64.
             (substitute* "CMakeLists.txt"
               (("LIB_SUFFIX \\$\\{_init_lib_suffix\\}")
                "LIB_SUFFIX \"\""))
             #t)))))
    (inputs
     `(("libsndfile" ,libsndfile)
       ("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("ladspa" ,ladspa)
       ("lash" ,lash)
       ("readline" ,readline)
       ("glib" ,glib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://www.fluidsynth.org/")
    (synopsis "SoundFont synthesizer")
    (description
     "FluidSynth is a real-time software synthesizer based on the SoundFont 2
specifications.  FluidSynth reads and handles MIDI events from the MIDI input
device.  It is the software analogue of a MIDI synthesizer.  FluidSynth can
also play midifiles using a Soundfont.")
    (license license:lgpl2.1+)))

;; gzdoom@3.3.0 and lmms@1.1.3 requires this version.  Remove once no longer
;; needed.
(define-public fluidsynth-1
  (package
    (inherit fluidsynth)
    (version "1.1.11")
    (source (origin
              (inherit (package-source fluidsynth))
              (uri (git-reference
                    (url "https://github.com/FluidSynth/fluidsynth")
                    (commit (string-append "v" version))))
              (file-name (git-file-name "fluidsynth" version))
              (sha256
               (base32
                "0n75jq3xgq46hfmjkaaxz3gic77shs4fzajq40c8gk043i84xbdh"))))))

(define-public faad2
  (package
    (name "faad2")
    (version "2.8.8")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "mirror://sourceforge/faac/faad2-src/faad2-"
                       (version-major+minor version) ".0/"
                       "faad2-" version ".tar.gz"))
       (sha256
        (base32 "0va284hndhn0ynm4lyn219qw4y8wa4agfkqgwlaji7bqp6nkyp4q"))))
    (build-system gnu-build-system)
    (home-page "https://www.audiocoding.com/faad2.html")
    (synopsis "MPEG-4 and MPEG-2 AAC decoder")
    (description
     "FAAD2 is an MPEG-4 and MPEG-2 AAC decoder supporting LC, Main, LTP, SBR, -PS, and DAB+.")
    (license license:gpl2+)))

(define-public faust
  (package
    (name "faust")
    (version "0.9.90")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/grame-cncm/faust")
                    (commit (string-append "v"
                                           (string-map (lambda (c)
                                                         (if (char=? c #\.) #\- c))
                                                       version)))))
              (file-name (string-append "faust-" version "-checkout"))
              (sha256
               (base32
                "0qc6iwjd3i80jdyjc186c6ywipmjzl8wlsp4050pbr56q4rlkd4z"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list (string-append "prefix=" (assoc-ref %outputs "out")))
       #:tests? #f
       #:phases
       (modify-phases %standard-phases
         ;; no "configure" script
         (delete 'configure)
         ;; Files appear under $out/share/faust that are read-only.  The
         ;; install phase tries to overwrite them and fails, so we change
         ;; the permissions first.
         (add-before 'install 'fix-permissions
           (lambda _
             (for-each (lambda (file)
                         (chmod file #o644))
                       (find-files "architecture/max-msp" ".*"))
             #t)))))
    (native-inputs
     `(("unzip" ,unzip)))
    (home-page "https://faust.grame.fr/")
    (synopsis "Signal processing language")
    (description
     "Faust is a programming language for realtime audio signal processing.")
    (license license:gpl2+)))

(define-public faust-2
  (package
    (inherit faust)
    (version "2.5.23")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/grame-cncm/faust/"
                                  "releases/download/" version
                                  "/faust-" version ".tar.gz"))
              (sha256
               (base32
                "1yz5jnr76hh7rmxkpdi7gyrw1wp4gyqfpq8zyl97qdi5ga5gjznq"))))
    (build-system gnu-build-system)
    (arguments
     (substitute-keyword-arguments (package-arguments faust)
       ((#:make-flags flags)
        `(list (string-append "prefix=" (assoc-ref %outputs "out"))
               "world"))))
    (native-inputs
     `(("llvm" ,llvm-3.8)
       ("which" ,which)
       ("xxd" ,xxd)
       ("ctags" ,emacs-minimal)  ; for ctags
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("libsndfile" ,libsndfile)
       ("libmicrohttpd" ,libmicrohttpd)
       ("ncurses" ,ncurses)
       ("openssl" ,openssl)
       ("zlib" ,zlib)))))

(define-public freepats
  (package
    (name "freepats")
    (version "20060219")
    (source (origin
              (method url-fetch)
              (uri (string-append "http://freepats.zenvoid.org/freepats-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "12iw36rd94zirll96cd5k0va7p5hxmf2shvjlhzihcmjaw8flq82"))))
    (build-system trivial-build-system)
    (arguments
     `(#:modules ((guix build utils))
       #:builder (begin
                   (use-modules (guix build utils))
                   (let ((out (string-append %output "/share/freepats")))
                     (setenv "PATH" (string-append
                                     (assoc-ref %build-inputs "bzip2") "/bin:"
                                     (assoc-ref %build-inputs "tar") "/bin"))
                     (invoke "tar" "xvf" (assoc-ref %build-inputs "source"))
                     (chdir "freepats")
                     ;; Use absolute pattern references
                     (substitute* "freepats.cfg"
                       (("Tone_000") (string-append out "/Tone_000"))
                       (("Drum_000") (string-append out "/Drum_000")))
                     (mkdir-p out)
                     (copy-recursively "." out)
                     #t))))
    (native-inputs
     `(("tar" ,tar)
       ("bzip2" ,bzip2)))
    (home-page "http://freepats.zenvoid.org")
    (synopsis "GUS compatible patches for MIDI players")
    (description
     "FreePats is a project to create a free and open set of GUS compatible
patches that can be used with softsynths such as Timidity and WildMidi.")
    ;; GPLv2+ with exception for compositions using these patches.
    (license license:gpl2+)))

(define-public guitarix
  (package
    (name "guitarix")
    (version "0.38.1")
    (source (origin
             (method url-fetch)
             (uri (string-append
                   "mirror://sourceforge/guitarix/guitarix/guitarix2-"
                   version ".tar.xz"))
             (sha256
              (base32
               "0bw7xnrx062nwb1bfj9x660h7069ncmz77szcs8icpqxrvhs7z80"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:python ,python-2
       #:configure-flags
       (list
        ;; Add the output lib directory to the RUNPATH.
        (string-append "--ldflags=-Wl,-rpath=" %output "/lib"))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-boost-includes
           (lambda _
             (substitute* "src/headers/gx_internal_plugins.h"
               (("namespace gx_jack" m)
                (string-append "#include <boost/noncopyable.hpp>\n" m)))
             (substitute* '("src/headers/gx_system.h"
                            "src/headers/gx_parameter.h"
                            "src/headers/gx_json.h")
               (("namespace gx_system" m)
                (string-append "#include <boost/noncopyable.hpp>\n" m)))
             #t)))))
    (inputs
     `(("libsndfile" ,libsndfile)
       ("boost" ,boost)
       ("curl" ,curl)
       ("avahi" ,avahi)
       ("eigen" ,eigen)
       ("lv2" ,lv2)
       ("lilv" ,lilv)
       ("ladspa" ,ladspa)
       ("jack" ,jack-1)
       ("gtkmm" ,gtkmm-2)
       ("gtk+" ,gtk+-2)
       ("fftwf" ,fftwf)
       ("lrdf" ,lrdf)
       ("zita-resampler" ,zita-resampler)
       ("zita-convolver" ,zita-convolver)))
    (native-inputs
     `(("gperf" ,gperf)
       ("faust" ,faust)
       ("intltool" ,intltool)
       ("gettext" ,gettext-minimal)
       ("pkg-config" ,pkg-config)))
    (native-search-paths
     (list (search-path-specification
            (variable "LV2_PATH")
            (files '("lib/lv2")))))
    (home-page "https://guitarix.org/")
    (synopsis "Virtual guitar amplifier")
    (description "Guitarix is a virtual guitar amplifier running JACK.
Guitarix takes the signal from your guitar as a mono-signal from your sound
card.  The input is processed by a main amp and a rack-section.  Both can be
routed separately and deliver a processed stereo-signal via JACK.  You may
fill the rack with effects from more than 25 built-in modules including stuff
from a simple noise gate to modulation effects like flanger, phaser or
auto-wah.")
    (license license:gpl2+)))

(define-public guitarix-lv2
  (package (inherit guitarix)
    (name "guitarix-lv2")
    (arguments
     (substitute-keyword-arguments (package-arguments guitarix)
       ((#:configure-flags flags)
        `(cons "--no-standalone" ,flags))))))

(define-public rakarrack
  (package
    (name "rakarrack")
    (version "0.6.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/rakarrack/rakarrack/"
                                  "rakarrack-" version "/rakarrack-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "1rpf63pdn54c4yg13k7cb1w1c7zsvl97c4qxcpz41c8l91xd55kn"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  (substitute* '("src/process.C"
                                 "src/global.h")
                    (("#include <Fl/") "#include <FL/"))
                  #t))))
    (build-system gnu-build-system)
    (inputs
     `(("alsa-utils" ,alsa-utils)
       ("fltk" ,fltk)
       ("libx11" ,libx11)
       ("libxext" ,libxext)
       ("libxfixes" ,libxfixes)
       ("libxft" ,libxft)
       ("libxrender" ,libxrender)
       ("libxpm" ,libxpm)
       ("fontconfig" ,fontconfig)
       ("freetype" ,freetype)
       ("jack" ,jack-1)
       ("alsa-lib" ,alsa-lib)
       ("libsndfile" ,libsndfile)
       ("libsamplerate" ,libsamplerate)
       ("zlib" ,zlib)))
    (home-page "http://rakarrack.sourceforge.net/")
    (synopsis "Audio effects processor")
    (description
     "Rakarrack is a richly featured multi-effects processor emulating a
guitar effects pedalboard.  Effects include compressor, expander, noise gate,
equalizers, exciter, flangers, chorus, various delay and reverb effects,
distortion modules and many more.  Most of the effects engine is built from
modules found in the excellent software synthesizer ZynAddSubFX.  Presets and
user interface are optimized for guitar, but Rakarrack processes signals in
stereo while it does not apply internal band-limiting filtering, and thus is
well suited to all musical instruments and vocals.")
    ;; The code is explicitly licensed under the GPL version 2 only.
    (license license:gpl2)))

(define-public ir
  (package
    (name "ir")
    (version "1.3.4")
    (source (origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/tomszilagyi/ir.lv2")
                   (commit version)))
             (file-name (git-file-name name version))
             (sha256
              (base32
               "0svmjhg4r6wy5ci5rwz43ybll7yxjv7nnj7nyqscbzhr3gi5aib0"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                              ; no tests
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             (string-append "INSTDIR="
                            (assoc-ref %outputs "out") "/lib/lv2"))
       #:phases (modify-phases %standard-phases
                  (delete 'configure))))        ; no configure script
    (inputs
     `(("libsndfile" ,libsndfile)
       ("libsamplerate" ,libsamplerate)
       ("lv2" ,lv2)
       ("glib" ,glib)
       ("gtk+" ,gtk+-2)
       ("zita-convolver" ,zita-convolver)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (native-search-paths
     (list (search-path-specification
            (variable "LV2_PATH")
            (files '("lib/lv2")))))
    (home-page "https://tomszilagyi.github.io/plugins/ir.lv2")
    (synopsis "LV2 convolution reverb")
    (description
     "IR is a low-latency, real-time, high performance signal convolver
especially for creating reverb effects.  It supports impulse responses with 1,
2 or 4 channels, in any soundfile format supported by libsndfile.")
    (license license:gpl2+)))

(define-public jack-1
  (package
    (name "jack")
    (version "0.125.0")
    (source
     (origin
       (method url-fetch)
       ;; jackaudio.org/downloads/jack-audio-connection-kit-0.125.0.tar.gz
       ;; no longer exists (404).  Use an unofficial mirror.
       (uri (string-append "https://crux.ster.zone/downloads/"
                           "jack-audio-connection-kit/"
                           "jack-audio-connection-kit-" version ".tar.gz"))
       (sha256
        (base32 "0i6l25dmfk2ji2lrakqq9icnwjxklgcjzzk65dmsff91z2zva5rm"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (add-after 'unpack 'patch-configure
                    (lambda _
                      (substitute* "configure"
                        ;; Install to <out/lib> regardless of platform.
                        (("libnn=lib64") "libnn=lib"))
                      #t)))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("readline" ,readline)))
    ;; uuid.h is included in the JACK type headers
    ;; db.h is included in the libjack metadata headers
    (propagated-inputs
     `(("libuuid" ,util-linux "lib")
       ("bdb" ,bdb)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://jackaudio.org/")
    (synopsis "JACK audio connection kit")
    (description
     "JACK is a low-latency audio server.  It can connect a number of
different applications to an audio device, as well as allowing them to share
audio between themselves.  JACK is different from other audio server efforts
in that it has been designed from the ground up to be suitable for
professional audio work.  This means that it focuses on two key areas:
synchronous execution of all clients, and low latency operation.")
    ;; Most files are licensed under the GPL. However, the libjack/ tree is
    ;; licensed under the LGPL in order to allow for proprietary usage.
    (license (list license:gpl2+ license:lgpl2.1+))))

;; Packages depending on JACK should always prefer jack-1.  Both jack-1 and
;; jack-2 implement the same API.  JACK2 is provided primarily as a client
;; program for users who might benefit from the D-BUS features.
(define-public jack-2
  (package (inherit jack-1)
    (name "jack2")
    (version "1.9.13")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://github.com/jackaudio/jack2/releases/"
                                 "download/v" version "/jack2-"
                                 version ".tar.gz"))
             (file-name (string-append name "-" version ".tar.gz"))
             (sha256
              (base32
               "1d1d403jn4366mqig6g8ghr8057b3rn7gs26b5p3rkal34j20qw2"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f  ; no check target
       #:configure-flags '("--dbus"
                           "--alsa")
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'set-linkflags
           (lambda _
             ;; Add $libdir to the RUNPATH of all the binaries.
             (substitute* "wscript"
               ((".*CFLAGS.*-Wall.*" m)
                (string-append m
                               "    conf.env.append_unique('LINKFLAGS',"
                               "'-Wl,-rpath=" %output "/lib')\n")))
             #t))
         (add-after 'install 'wrap-python-scripts
           (lambda* (#:key inputs outputs #:allow-other-keys)
             ;; Make sure 'jack_control' runs with the correct PYTHONPATH.
             (let* ((out (assoc-ref outputs "out"))
                    (path (getenv "PYTHONPATH")))
               (wrap-program (string-append out "/bin/jack_control")
                 `("PYTHONPATH" ":" prefix (,path))))
             #t)))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("dbus" ,dbus)
       ("expat" ,expat)
       ("libsamplerate" ,libsamplerate)
       ("opus" ,opus)
       ("python-dbus" ,python-dbus)
       ("readline" ,readline)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    ;; Most files are under GPLv2+, but some headers are under LGPLv2.1+
    (license (list license:gpl2+ license:lgpl2.1+))))

(define-public jalv
  (package
    (name "jalv")
    (version "1.6.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://download.drobilla.net/jalv-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "1wwfn7yzbs37s2rdlfjgks63svd5g14yyzd2gdl7h0z12qncwsy2"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:python ,python-2))
    (inputs
     `(("lv2" ,lv2)
       ("lilv" ,lilv)
       ("suil" ,suil)
       ("gtk2" ,gtk+-2)
       ("gtk3" ,gtk+)
       ("gtkmm" ,gtkmm-2)
       ("qtbase" ,qtbase)
       ("jack" ,jack-1)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://drobilla.net/software/jalv/")
    (synopsis "Simple LV2 host for JACK")
    (description
     "Jalv is a simple but fully featured LV2 host for JACK.  It runs LV2
plugins and exposes their ports as JACK ports, essentially making any LV2
plugin function as a JACK application.")
    (license license:isc)))

(define-public ladspa
  (package
    (name "ladspa")
    (version "1.13")
    (source
     (origin
       (method url-fetch)
       ;; Since the official link is dead,
       ;; we download the tarball from Debian or Internet Archive.
       (uri (list (string-append "http://http.debian.net"
                                 "/debian/pool/main/l/ladspa-sdk/ladspa-sdk_"
                                 version ".orig.tar.gz")
                  (string-append "https://web.archive.org/web/20140717172251/"
                                 "http://www.ladspa.org/download/ladspa_sdk_"
                                 version ".tgz")))
       (sha256
        (base32
         "0srh5n2l63354bc0srcrv58rzjkn4gv8qjqzg8dnq3rs4m7kzvdm"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f  ; the "test" target is a listening test only
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys #:rest args)
             (chdir "src")
             (let ((out (assoc-ref outputs "out")))
               (substitute* "makefile"
                 (("/usr/lib/ladspa/") (string-append out "/lib/ladspa/"))
                 (("/usr/include/")    (string-append out "/include/"))
                 (("/usr/bin/")        (string-append out "/bin/"))
                 (("-mkdirhier")       "mkdir -p")
                 (("^CC.*")            "CC = gcc\n")
                 (("^CPP.*")           "CPP = g++\n")))
             #t))
         (delete 'build))))
    ;; Since the home page is gone, we provide a link to the archived version.
    (home-page
     "https://web.archive.org/web/20140729190945/http://www.ladspa.org/")
    (synopsis "Linux Audio Developer's Simple Plugin API (LADSPA)")
    (description
     "LADSPA is a standard that allows software audio processors and effects
to be plugged into a wide range of audio synthesis and recording packages.")
    (license license:lgpl2.1+)))

(define-public lash
  (package
    (name "lash")
    (version "0.6.0-rc2")
    (source (origin
              (method url-fetch)
              ;; The tilde is not permitted in the builder name, but is used
              ;; in the tarball.
              (uri (string-append
                    "mirror://savannah/lash/lash-"
                    (string-join (string-split version #\-) "~")
                    ".tar.bz2"))
              (file-name (string-append name "-" version ".tar.bz2"))
              (sha256
               (base32
                "12z1vx3krrzsfccpah9xjs68900xvr7bw92wx8np5871i2yv47iw"))))
    (build-system gnu-build-system)
    (arguments
     '(;; Glibc no longer includes Sun RPC support, so tell the build system
       ;; to use libtirpc instead.
       #:make-flags (list (string-append "CFLAGS=-I"
                                         (assoc-ref %build-inputs "libtirpc")
                                         "/include/tirpc -ltirpc"))
       #:phases
       (modify-phases %standard-phases
         ;; lashd embeds an ancient version of sigsegv so we just skip it
         (add-after 'unpack 'skip-lashd
           (lambda _
             (substitute* '("Makefile.am" "Makefile.in")
               (("lashd ") ""))
             #t)))
       #:configure-flags '("--disable-static")))
    (inputs
     `(("bdb" ,bdb)
       ("gtk" ,gtk+-2)
       ("jack" ,jack-1)
       ("libtirpc" ,libtirpc)
       ("readline" ,readline)
       ("python" ,python-2)))
    ;; According to pkg-config, packages depending on lash also need to have
    ;; at least the following packages declared as inputs.
    (propagated-inputs
     `(("alsa-lib" ,alsa-lib)
       ("dbus" ,dbus)
       ("libxml2" ,libxml2)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://www.nongnu.org/lash/")
    (synopsis "Audio application session manager")
    (description
     "LASH is a session management system for audio applications.  It allows
you to save and restore audio sessions consisting of multiple interconneced
applications, restoring program state (i.e. loaded patches) and the
connections between them.")
    (license license:gpl2+)))

(define-public libbs2b
  (package
    (name "libbs2b")
    (version "3.1.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/bs2b/libbs2b/" version
                                  "/libbs2b-" version ".tar.lzma"))
              (sha256
               (base32
                "1mcc4gjkmphczjybnsrip3gq1f974knzys7x49bv197xk3fn8wdr"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("libsndfile" ,libsndfile)))
    (home-page "https://sourceforge.net/projects/bs2b/")
    (synopsis "Bauer stereophonic-to-binaural DSP")
    (description
     "The Bauer stereophonic-to-binaural DSP (bs2b) library and plugins is
designed to improve headphone listening of stereo audio records.  Recommended
for headphone prolonged listening to disable superstereo fatigue without
essential distortions.")
    (license license:expat)))

(define-public ladspa-bs2b
  (package
    (name "ladspa-bs2b")
    (version "0.9.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://sourceforge/bs2b/plugins/LADSPA%20plugin/"
                    version "/" name "-" version ".tar.gz"))
              (sha256
               (base32
                "1b4aipbj1ba5k99gbc7gmgy14sywyrjd8rpyqj5l905j0mjv8jg2"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("ladspa" ,ladspa)
              ("libbs2b" ,libbs2b)))
    (home-page "https://sourceforge.net/projects/bs2b/")
    (synopsis "Bauer stereophonic-to-binaural DSP - LADSPA plugin")
    (description "The Bauer stereophonic-to-binaural DSP (bs2b) library and
plugins is designed to improve headphone listening of stereo audio records.
Recommended for headphone prolonged listening to disable superstereo fatigue
without essential distortions.  This package contains a LADSPA plugin for use
with applications that support them (e.g. PulseAudio).")
    (license license:gpl2+)))

(define-public liblo
  (package
    (name "liblo")
    (version "0.31")
    (source (origin
             (method url-fetch)
             (uri (string-append "mirror://sourceforge/liblo/liblo/" version
                                 "/liblo-" version ".tar.gz"))
             (sha256
              (base32
               "0l67rkdhfa8cffa0nynql3lh2xlbn1454h6qxhjddp1029p48krb"))))
    (build-system gnu-build-system)
    (arguments
     `(;; liblo test FAILED
       ;; liblo server error 19 in setsockopt(IP_ADD_MEMBERSHIP): No such device
       #:tests? #f))
    (home-page "http://liblo.sourceforge.net")
    (synopsis "Implementation of the Open Sound Control protocol")
    (description
     "liblo is a lightweight library that provides an easy to use
implementation of the Open Sound Control (@dfn{OSC}) protocol.")
    (license license:lgpl2.1+)))

(define-public rtaudio
  (package
    (name "rtaudio")
    (version "5.1.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/thestk/rtaudio")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "156c2dgh6jrsyfn1y89nslvaxm4yifmxridsb708yvkaym02w2l8"))))
    (build-system cmake-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("pulseaudio" ,pulseaudio)))
    (synopsis "Common API for real-time audio I/O")
    (description
     "RtAudio is a set of C++ classes that provides a common API for real-time
audio input/output.  It was designed with the following objectives:

@itemize
@item object-oriented C++ design
@item simple, common API across all supported platforms
@item only one source and one header file for easy inclusion in programming
projects
@item allow simultaneous multi-api support
@item support dynamic connection of devices
@item provide extensive audio device parameter control
@item allow audio device capability probing
@item automatic internal conversion for data format, channel number
compensation, (de)interleaving, and byte-swapping
@end itemize")
    (home-page "https://www.music.mcgill.ca/~gary/rtaudio/")
    ;; License is expat with a non-binding request to send modifications to
    ;; original developer.
    (license license:expat)))

(define-public python-pyaudio
  (package
    (name "python-pyaudio")
    (version "0.2.11")
    (source
     (origin
       (method url-fetch)
       (uri (pypi-uri "PyAudio" version))
       (sha256
        (base32
         "0x7vdsigm7xgvyg3shd3lj113m8zqj2pxmrgdyj66kmnw0qdxgwk"))))
    (build-system python-build-system)
    (inputs
     `(("portaudio" ,portaudio)))
    (home-page "https://people.csail.mit.edu/hubert/pyaudio/")
    (synopsis "Bindings for PortAudio v19")
    (description "This package provides bindings for PortAudio v19, the
cross-platform audio input/output stream library.")
    (license license:expat)))

(define-public python2-pyaudio
  (package-with-python2 python-pyaudio))

(define-public python-pyliblo
  (package
    (name "python-pyliblo")
    (version "0.10.0")
    (source (origin
             (method url-fetch)
             (uri (string-append "http://das.nasophon.de/download/pyliblo-"
                                 version ".tar.gz"))
             (sha256
              (base32
               "13vry6xhxm7adnbyj28w1kpwrh0kf7nw83cz1yq74wl21faz2rzw"))))
    (build-system python-build-system)
    (arguments `(#:tests? #f)) ;no tests
    (native-inputs
     `(("python-cython" ,python-cython)))
    (inputs
     `(("liblo" ,liblo)))
    (home-page "http://das.nasophon.de/pyliblo/")
    (synopsis "Python bindings for liblo")
    (description
     "Pyliblo is a Python wrapper for the liblo Open Sound Control (OSC)
library.  It supports almost the complete functionality of liblo, allowing you
to send and receive OSC messages using a nice and simple Python API.  Also
included are the command line utilities @code{send_osc} and @code{dump_osc}.")
    (license license:lgpl2.1+)))

(define-public python2-pyliblo
  (package-with-python2 python-pyliblo))

(define-public lilv
  (package
    (name "lilv")
    (version "0.24.8")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://download.drobilla.net/lilv-"
                                 version ".tar.bz2"))
             (sha256
              (base32
               "0063i5zgf3d3accwmyx651hw0wh5ik7kji2hvfkcdbl1qia3dp6a"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'set-ldflags
          (lambda* (#:key outputs #:allow-other-keys)
            (setenv "LDFLAGS"
                    (string-append "-Wl,-rpath="
                                   (assoc-ref outputs "out") "/lib"))
            #t))
         (add-after 'unpack 'full-store-path-to-shared-library
           (lambda* (#:key outputs #:allow-other-keys)
             (with-directory-excursion "bindings/python"
               (substitute* "lilv.py"
                 (("liblilv-0.so") (string-append (assoc-ref outputs "out")
                                                  "/lib/liblilv-0.so"))))
             #t)))))
    ;; Required by lilv-0.pc.
    (propagated-inputs
     `(("lv2" ,lv2)
       ("serd" ,serd)
       ("sord" ,sord)
       ("sratom" ,sratom)))
    (native-inputs
     `(("python" ,python)
       ("pkg-config" ,pkg-config)))
    (home-page "https://drobilla.net/software/lilv")
    (synopsis "Library to simplify use of LV2 plugins in applications")
    (description
     "Lilv is a C library to make the use of LV2 plugins as simple as possible
for applications.  Lilv is the successor to SLV2, rewritten to be
significantly faster and have minimal dependencies.")
    (license license:isc)))

(define-public lv2
  (package
    (name "lv2")
    (version "1.18.0")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://lv2plug.in/spec/lv2-"
                                 version ".tar.bz2"))
             (sha256
              (base32
               "0gs7401xz23q9vajqr31aa2db8dvssgyh5zrvr4ipa6wig7yb8wh"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:configure-flags '("--no-plugins")))
    (inputs
     ;; Leaving off cairo and gtk+-2.0 which are needed for example plugins
     `(("libsndfile" ,libsndfile)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://lv2plug.in/")
    (synopsis "LV2 audio plugin specification")
    (description
     "LV2 is an open specification for audio plugins and host applications.
At its core, LV2 is a simple stable interface, accompanied by extensions which
add functionality to support the needs of increasingly powerful audio
software.")
    (license license:isc)))

(define-public lv2-mda-piano
  (package
    (name "lv2-mda-piano")
    (version "0.0.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "http://git.elephly.net/software/lv2-mdametapiano.git")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "07lywf6lpfpndg3i9w752mmlg2hgn1bwp23h8b0mdj6awh67abqd"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list
                     "TYPE=mdaPiano"
                     (string-append "PREFIX=" (assoc-ref %outputs "out")))
       #:tests? #f ; no check target
       #:phases (modify-phases %standard-phases (delete 'configure))))
    (inputs
     `(("lv2" ,lv2)
       ("lvtk" ,lvtk)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (native-search-paths
     (list (search-path-specification
            (variable "LV2_PATH")
            (files '("lib/lv2")))))
    (home-page "https://elephly.net/lv2/mdapiano.html")
    (synopsis "LV2 port of the mda Piano plugin")
    (description "An LV2 port of the mda Piano VSTi.")
    (license license:gpl3+)))

(define-public lv2-mda-epiano
  (package (inherit lv2-mda-piano)
    (name "lv2-mda-epiano")
    (arguments
     `(#:make-flags (list
                     "TYPE=mdaEPiano"
                     (string-append "PREFIX=" (assoc-ref %outputs "out")))
       #:tests? #f ; no check target
       #:phases (modify-phases %standard-phases (delete 'configure))))
    (home-page "https://elephly.net/lv2/mdaepiano.html")
    (synopsis "LV2 port of the mda EPiano plugin")
    (description "An LV2 port of the mda EPiano VSTi.")))

(define-public lvtk
  (package
    (name "lvtk")
    (version "1.2.0")
    (source (origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/lvtk/lvtk")
                   (commit version)))
             (file-name (git-file-name name version))
             (sha256
              (base32
               "1b01zvzl70ana6l1kn8fgyr7msnn3c7x61cgw7fdpp50322352p8"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f  ; no check target
       #:python ,python-2
       #:configure-flags
       (list (string-append "--boost-includes="
                            (assoc-ref %build-inputs "boost")
                            "/include"))))
    (inputs
     `(("boost" ,boost)
       ("gtkmm" ,gtkmm-2)
       ("lv2" ,lv2)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://github.com/lvtk/lvtk")
    (synopsis "C++ libraries for LV2 plugins")
    (description
     "The LV2 Toolkit (LVTK) contains libraries that wrap the LV2 C API and
extensions into easy to use C++ classes.  It is the successor of
lv2-c++-tools.")
    (license license:gpl3+)))

(define-public openal
  (package
    (name "openal")
    (version "1.20.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://openal-soft.org/openal-releases/openal-soft-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "0vax0b1lgd4212bpxa1rciz52d4mv3dkfvcbbhzw4cjp698v1kmn"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f  ; no check target
       #:phases
       (modify-phases %standard-phases
         (add-after
          'unpack 'use-full-library-paths
          (lambda* (#:key inputs #:allow-other-keys)
            (substitute* "alc/backends/pulseaudio.cpp"
              (("#define PALIB \"libpulse\\.so\\.0\"")
               (string-append "#define PALIB \""
                              (assoc-ref inputs "pulseaudio")
                              "/lib/libpulse.so.0"
                              "\"")))
            (substitute* "alc/backends/alsa.cpp"
              (("LoadLib\\(\"libasound\\.so\\.2\"\\)")
               (string-append "LoadLib(\""
                              (assoc-ref inputs "alsa-lib")
                              "/lib/libasound.so.2"
                              "\")")))
            #t)))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("pulseaudio" ,pulseaudio)))
    (synopsis "3D audio API")
    (description
     "OpenAL provides capabilities for playing audio in a virtual 3D
environment.  Distance attenuation, doppler shift, and directional sound
emitters are among the features handled by the API.  More advanced effects,
including air absorption, occlusion, and environmental reverb, are available
through the EFX extension.  It also facilitates streaming audio, multi-channel
buffers, and audio capture.")
    (home-page "https://openal-soft.org/")
    (license license:lgpl2.0+)))

(define-public freealut
  (package
    (name "freealut")
    (version "1.1.0")
    (source (origin
              (method url-fetch)
              ;; Upstream url is unclear, many systems use Fedora, there is also
              ;; https://github.com/vancegroup/freealut though the status of it
              ;; (official? unofficial?) is not clear.
              (uri (string-append
                    "https://pkgs.fedoraproject.org/repo/pkgs/" name "/" name "-"
                    version ".tar.gz" "/e089b28a0267faabdb6c079ee173664a/" name
                    "-" version ".tar.gz"))
              (sha256
               (base32
                "0kzlil6112x2429nw6mycmif8y6bxr2cwjcvp18vh6s7g63ymlb0"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f))  ; no check target
    (inputs
     `(("openal" ,openal)))
    (synopsis "Free implementation of OpenAL's ALUT standard")
    (description "freealut is the OpenAL Utility Toolkit.")
    (home-page "https://kcat.strangesoft.net/openal.html")
    (license license:lgpl2.0)))

(define-public patchage
  (package
    (name "patchage")
    (version "1.0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://download.drobilla.net/patchage-"
                                  version
                                  ".tar.bz2"))
              (sha256
               (base32
                "0dk3fiac10m83mwss3026yz7ygc47c2iw924cwwnh2fyydc9bsy6"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:python ,python-2))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("boost" ,boost)
       ("jack" ,jack-1)
       ("ganv" ,ganv)
       ("glibmm" ,glibmm)
       ("gtkmm" ,gtkmm-2)
       ("dbus-glib" ,dbus-glib)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://drobilla.net/software/patchage/")
    (synopsis "Modular patch bay for audio and MIDI systems")
    (description
     "Patchage is a modular patch bay for audio and MIDI systems based on JACK
and ALSA.")
    (license license:gpl3+)))

(define-public pcaudiolib
  (package
    (name "pcaudiolib")
    (version "1.1")
    (home-page "https://github.com/espeak-ng/pcaudiolib")
    (source (origin
              (method git-fetch)
              (uri (git-reference (url home-page) (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0c55hlqqh0m7bcb3nlgv1s4a22s5bgczr1cakjh3767rjb10khi0"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags '("--disable-static")))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)
       ("which" ,which)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("pulseaudio" ,pulseaudio)))
    (synopsis "Portable C audio library")
    (description
     "The Portable C Audio Library (pcaudiolib) provides a C@tie{}API to
different audio devices such as ALSA or PulseAudio.")
    (license (list license:gpl3+
                   ;; The bundled TPCircularBuffer uses a custom license.
                   (license:non-copyleft
                    "file://src/TPCircularBuffer/README.markdown")))))

(define-public qjackctl
  (package
    (name "qjackctl")
    (version "0.5.9")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/qjackctl/qjackctl/"
                                  version "/qjackctl-" version ".tar.gz"))
              (sha256
               (base32
                "1saywsda9m124rmjp7i3n0llryaliabjxhqhvqr6dm983qy7pypk"))))
    (build-system gnu-build-system)
    (arguments
     '(#:tests? #f))                    ; no check target
    (inputs
     `(("jack" ,jack-1)
       ("alsa-lib" ,alsa-lib)
       ("qtbase" ,qtbase)
       ("qtx11extras" ,qtx11extras)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("qttools" ,qttools)))
    (home-page "https://qjackctl.sourceforge.io/")
    (synopsis "Jack server control application")
    (description "Control a Jack server.  Allows you to plug various sources
into various outputs and to start, stop and configure jackd")
    (license license:gpl2+)))

(define-public qjackrcd
  (package
    (name "qjackrcd")
    (version "1.2.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/orouits/qjackrcd")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1l5iq2mkqd4gn9yr8xbh9qlpp1clcflazychl4vhdbz0bzq4c6al"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key outputs #:allow-other-keys)
             (invoke "qmake"
                     (string-append "PREFIX="
                                    (assoc-ref outputs "out"))))))))
    (native-inputs
     `(("qtbase" ,qtbase))) ; for qmake
    (inputs
     `(("jack" ,jack-1)
       ("libsndfile" ,libsndfile)
       ("qtbase" ,qtbase)))
    (home-page "https://sourceforge.net/projects/qjackrcd/")
    (synopsis "Stereo audio recorder for JACK")
    (description "QJackRcd is a simple graphical stereo recorder for JACK
supporting silence processing for automatic pause, file splitting, and
background file post-processing.")
    (license license:gpl2+)))

(define-public supercollider
  (package
    (name "supercollider")
    (version "3.11.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/supercollider/supercollider")
                    (commit (string-append "Version-" version))
                    ;; for nova-simd, nova-tt, hidapi, TLSF, oscpack
                    (recursive? #t)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "02v911w2kdbg3kfl593lb2ig4sjbfxzv20a0vbcymhfzpvp1x6xp"))
              (modules '((guix build utils)
                         (ice-9 ftw)))
              (snippet
               ;; The build system doesn't allow us to unbundle the following
               ;; libraries.  hidapi is also heavily patched and upstream not
               ;; actively maintained.
               '(let ((keep-dirs '("nova-simd" "nova-tt" "hidapi"
                                   "TLSF-2.4.6" "oscpack_1_1_0" "." "..")))
                  (with-directory-excursion "./external_libraries"
                    (for-each
                     delete-file-recursively
                     (scandir "."
                              (lambda (x)
                                (and (eq? (stat:type (stat x)) 'directory)
                                     (not (member (basename x) keep-dirs)))))))
                  ;; To find the Guix provided ableton-link library.
                  (substitute* "lang/CMakeLists.txt"
                    (("include\\(\\.\\./external_libraries/link/\
AbletonLinkConfig\\.cmake\\)")
                     "find_package(AbletonLink NAMES AbletonLink ableton-link \
link REQUIRED)"))
                  #t))))
    (build-system cmake-build-system)
    (outputs
     '("out"   ;core language
       "ide")) ;qt ide
    (arguments
     `(#:configure-flags '("-DSYSTEM_BOOST=on" "-DSYSTEM_YAMLCPP=on"
                           "-DSC_QT=ON" "-DCMAKE_BUILD_TYPE=Release"
                           "-DFORTIFY=ON" "-DLIBSCSYNTH=ON"
                           "-DSC_EL=off") ;scel is packaged individually as
                                          ;emacs-scel
       #:phases
       (modify-phases %standard-phases
         ;; HOME must be defined otherwise supercollider throws a "ERROR:
         ;; Primitive '_FileMkDir' failed." error when generating the doc.
         ;; The graphical tests also hang without it.
         (add-after 'unpack 'set-home-directory
           (lambda _
             (setenv "HOME" (getcwd))
             #t))
         (add-after 'unpack 'patch-scclass-dir
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (scclass-dir
                     (string-append out
                                    "/share/SuperCollider/SCClassLibrary")))
               (substitute* "lang/LangSource/SC_LanguageConfig.cpp"
                 (((string-append
                    "SC_Filesystem::instance\\(\\)\\.getDirectory"
                    "\\(DirName::Resource\\) / CLASS_LIB_DIR_NAME"))
                  (string-append "Path(\"" scclass-dir "\")")))
               #t)))
         (add-before 'build 'prepare-x
           (lambda _
             (system "Xvfb &")
             (setenv "DISPLAY" ":0")
             #t))
         (add-before 'install 'install-ide
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (ide (assoc-ref outputs "ide"))
                    (scide "editors/sc-ide/scide"))
               (install-file scide
                             (string-append ide "/bin"))
               (delete-file scide)
               #t))))))
    (native-inputs
     `(("ableton-link" ,ableton-link)
       ("pkg-config" ,pkg-config)
       ("qttools" ,qttools)
       ("xorg-server" ,xorg-server-for-tests)))
    (inputs
     `(("jack" ,jack-1)
       ("libsndfile" ,libsndfile)
       ("fftw" ,fftw)
       ("libxt" ,libxt)
       ("readline" ,readline)           ;readline support for sclang's CLI
       ("alsa" ,alsa-lib)               ;for sclang's MIDI interface
       ("eudev" ,eudev)                 ;for user interactions with devices
       ("avahi" ,avahi)                 ;zeroconf service discovery support
       ("icu4c" ,icu4c)
       ("boost" ,boost)
       ("boost-sync" ,boost-sync)
       ("yaml-cpp" ,yaml-cpp)
       ("qtbase" ,qtbase)
       ("qtdeclarative" ,qtdeclarative)
       ("qtsvg" ,qtsvg)
       ("qtwebchannel" ,qtwebchannel)
       ("qtwebsockets" ,qtwebsockets)))
    (propagated-inputs                  ;to get native-search-path
     `(("qtwebengine" ,qtwebengine)))
    (home-page "https://github.com/supercollider/supercollider")
    (synopsis "Synthesis engine and programming language")
    (description "SuperCollider is a synthesis engine (@code{scsynth} or
@code{supernova}) and programming language (@code{sclang}).  It can be used
for experimenting with sound synthesis and algorithmic composition.

SuperCollider requires jackd to be installed in your user profile and your
user must be allowed to access the realtime features of the kernel.  Search
for \"realtime\" in the index of the Guix manual to learn how to achieve this
using Guix System.")
    (license license:gpl2+)))

(define-public raul
  (package
    (name "raul")
    (version "0.8.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://download.drobilla.net/raul-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "09ms40xc1x6qli6lxkwn5ibqh62nl9w7dq0b6jh1q2zvnrxwsd8b"))))
    (build-system waf-build-system)
    (arguments
     `(#:python ,python-2
       #:tests? #f)) ; no check target
    (inputs
     `(("glib" ,glib)
       ("boost" ,boost)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://drobilla.net/software/raul/")
    (synopsis "Real-time audio utility library")
    (description
     "Raul (Real-time Audio Utility Library) is a C++ utility library primarily
aimed at audio/musical applications.")
    (license license:gpl2+)))

(define-public raul-devel
  (let ((commit "4db870b2b20b0a608ec0283139056b836c5b1624")
        (revision "1"))
    (package (inherit raul)
      (name "raul")
      (version (string-append "0.8.9-" revision "."
                              (string-take commit 9)))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://git.drobilla.net/raul.git")
                      (commit commit)))
                (file-name (string-append name "-" version "-checkout"))
                (sha256
                 (base32
                  "04fajrass3ymr72flx5js5vxc601ccrmx8ny8scp0rw7j0igyjdr")))))))

(define-public resample
  (package
    (name "resample")
    (version "1.8.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://ccrma.stanford.edu/~jos/gz/resample-"
                                  version
                                  ".tar.gz"))
              (sha256 (base32
                       "074zj8ydp05yy1hjcglfv3hkvj4cm50f9nralka1992pm6yf8yvy"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("pkg-config" ,pkg-config)
       ("libtool" ,libtool)))
    (synopsis "Sampling rate conversion and filter design utilities")
    (description "This package contains the @command{resample} and
@command{windowfilter} command line utilities.  The @command{resample} command
allows changing the sampling rate of a sound file, while the
@command{windowfilter} command allows to design Finite Impulse Response (FIR)
filters using the so-called @emph{window method}.")
    (home-page "https://ccrma.stanford.edu/~jos/resample/Free_Resampling_Software.html")
    (license license:lgpl2.1+)))

(define-public rubberband
  (package
    (name "rubberband")
    (version "1.8.2")
    (source (origin
              (method url-fetch)
              (uri
               (string-append "https://bitbucket.org/breakfastquay/rubberband/get/v"
                              version
                              ".tar.bz2"))
              (file-name (string-append name "-" version ".tar.bz2"))
              (sha256
               (base32
                "0462fmjnfqpv2qi0s6ny42drqarkr0xy9lw8frjmfgzyzl5n9294"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'skip-jni-installation
           ;; ‘make install’ unconditionally installs librubberband-jni.so,
           ;; which is never built by ‘make all’.  Skip it.
           (lambda _
             (substitute* "Makefile.in"
               ((".*cp -f \\$\\(JNI_TARGET\\).*") ""))
             #t)))))
    (inputs
     `(("ladspa" ,ladspa)
       ("libsamplerate" ,libsamplerate)
       ("vamp" ,vamp)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://breakfastquay.com/rubberband/")
    (synopsis "Audio time-stretching and pitch-shifting library")
    (description
     "Rubber Band is a library and utility program that permits changing the
tempo and pitch of an audio recording independently of one another.")
    (license license:gpl2+)))

(define-public rtmidi
  (package
    (name "rtmidi")
    (version "4.0.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://www.music.mcgill.ca/~gary/rtmidi"
                                  "/release/rtmidi-" version ".tar.gz"))
              (file-name (string-append "rtmidi-" version ".tar.gz"))
              (sha256
               (base32
                "1k962ljpnwyjw9jjiky2372khhri1wqvrj5qsalfpys31xqzw31p"))))
    (build-system gnu-build-system)
    (inputs
     `(("jack" ,jack-1)
       ("alsa-lib" ,alsa-lib)))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)))
    (home-page "https://www.music.mcgill.ca/~gary/rtmidi")
    (synopsis "Cross-platform MIDI library for C++")
    (description
     "RtMidi is a set of C++ classes (RtMidiIn, RtMidiOut, and API specific
classes) that provide a common cross-platform API for realtime MIDI
input/output.")
    (license license:expat)))

(define-public sratom
  (package
    (name "sratom")
    (version "0.6.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://download.drobilla.net/sratom-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "0vh0biy3ngpzzgdml309c2mqz8xq9q0hlblczb4c6alhp0a8yv0l"))))
    (build-system waf-build-system)
    (arguments `(#:tests? #f))          ;no check target
    (propagated-inputs
     ;; In Requires of sratom-0.pc.
     `(("lv2" ,lv2)
       ("serd" ,serd)
       ("sord" ,sord)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://drobilla.net/software/sratom/")
    (synopsis "Library for serialising LV2 atoms to/from RDF")
    (description
     "Sratom is a library for serialising LV2 atoms to/from RDF, particularly
the Turtle syntax.")
    (license license:isc)))

(define-public suil
  (package
    (name "suil")
    (version "0.10.6")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://download.drobilla.net/suil-"
                                  version ".tar.bz2"))
              (sha256
               (base32
                "0z4v01pjw4wh65x38w6icn28wdwxz13ayl8hvn4p1g9kmamp1z06"))))
    (build-system waf-build-system)
    (arguments
     `(#:tests? #f))                    ;no check target
    (inputs
     `(("lv2" ,lv2)
       ("gtk+" ,gtk+-2)
       ("gtk+" ,gtk+)
       ("qt" ,qtbase)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://drobilla.net/software/suil/")
    (synopsis "Library for loading and wrapping LV2 plugin UIs")
    (description
     "Suil is a lightweight C library for loading and wrapping LV2 plugin UIs.

Suil makes it possible to load a UI of a toolkit in a host using another
toolkit.  The API is designed such that hosts do not need to explicitly
support specific toolkits – if Suil supports a particular toolkit, then UIs in
that toolkit will work in all hosts that use Suil automatically.

Suil currently supports every combination of Gtk, Qt, and X11.")
    (license license:isc)))

(define-public timidity++
  (package
    (name "timidity++")
    (version "2.14.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/timidity/TiMidity++"
                                  "/TiMidity++-" version
                                  "/TiMidity++-" version ".tar.bz2"))
              (sha256
               (base32
                "0xk41w4qbk23z1fvqdyfblbz10mmxsllw0svxzjw5sa9y11vczzr"))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags
       (list "--enable-audio=alsa,flac,jack,ao,vorbis,speex"
             "--enable-ncurses"
             "--enable-server"
             "--enable-alsaseq"
             (string-append "--with-default-path="
                            (assoc-ref %outputs "out") "/etc/timidity"))
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'install-config
           (lambda _
             (let ((out (string-append (assoc-ref %outputs "out")
                                       "/etc/timidity")))
               (mkdir-p out)
               (call-with-output-file
                   (string-append out "/timidity.cfg")
                 (lambda (port)
                   (format port (string-append "source "
                                               (assoc-ref %build-inputs "freepats")
                                               "/share/freepats/freepats.cfg")))))
             #t)))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("ao" ,ao)
       ("flac" ,flac)
       ("jack" ,jack-1)
       ("libogg" ,libogg)
       ("libvorbis" ,libvorbis)
       ("speex" ,speex)
       ("ncurses" ,ncurses)
       ("freepats" ,freepats)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://timidity.sourceforge.net/")
    (synopsis "Software synthesizer for playing MIDI files")
    (description
     "TiMidity++ is a software synthesizer.  It can play MIDI files by
converting them into PCM waveform data; give it a MIDI data along with digital
instrument data files, then it synthesizes them in real-time, and plays.  It
can not only play sounds, but also can save the generated waveforms into hard
disks as various audio file formats.")
    (license license:gpl2+)))

(define-public vamp
  (package
    (name "vamp")
    (version "2.6")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://code.soundsoftware.ac.uk"
                    "/attachments/download/1520/vamp-plugin-sdk-"
                    version ".tar.gz"))
              (sha256
               (base32
                "0pzq0yy2kdl3jgfc2aqmh5m55nk1ild0hq8mydiiw35c6y0mglyh"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ; no check target
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'remove-libvamp-hostsdk.la
           (lambda* (#:key outputs #:allow-other-keys)
             ;; https://bugs.launchpad.net/ubuntu/+source/vamp-plugin-sdk/+bug/1253656
             (for-each delete-file
                       (let ((out (assoc-ref outputs "out")))
                         (list (string-append out "/lib/libvamp-sdk.la")
                               (string-append out "/lib/libvamp-hostsdk.la"))))
             #t)))))
    (inputs
     `(("libsndfile" ,libsndfile)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://vamp-plugins.org")
    (synopsis "Modular and extensible audio processing system")
    (description
     "Vamp is an audio processing plugin system for plugins that extract
descriptive information from audio data — typically referred to as audio
analysis plugins or audio feature extraction plugins.")
    (license
     (license:x11-style
      "https://code.soundsoftware.ac.uk/projects/vamp-plugin-sdk/repository/entry/COPYING"))))

(define-public libsbsms
  (package
    (name "libsbsms")
    (version "2.0.2")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/sbsms/sbsms/" version
                           "/libsbsms-" version ".tar.gz"))
       (sha256
        (base32 "1vmf84iy4dkwxv887grnlsfk43fmhd9gbg26gc2kgcv40sbkvayf"))))
    (build-system gnu-build-system)
    (native-inputs `(("automake" ,automake)))
    (arguments
     `(#:configure-flags
       ;; Disable the use of SSE unless on x86_64.
       ,(if (not (string-prefix? "x86_64" (or (%current-target-system)
                                              (%current-system))))
            ''("--disable-sse")
            ''())
       #:phases
       (modify-phases %standard-phases
         (add-after
          'unpack 'fix-ar-lib-path
          (lambda* (#:key inputs #:allow-other-keys)
            ;; Originally a symlink to '/usr/local/share/automake-1.12/ar-lib'.
            (delete-file "ar-lib")
            (symlink
             (string-append (assoc-ref inputs "automake") "/share/automake-"
                            ,(package-version automake) "/ar-lib")
             "ar-lib")
            #t)))))
    (home-page "http://sbsms.sourceforge.net/")
    (synopsis "Library for time stretching and pitch scaling of audio")
    (description
     "SBSMS (Subband Sinusoidal Modeling Synthesis) is software for time
stretching and pitch scaling of audio.  This package contains the library.")
    ;; There is no explicit declaration of a license, but a COPYING file
    ;; containing gpl2.
    (license license:gpl2)))

(define-public wavpack
  (package
    (name "wavpack")
    (version "5.3.2")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/dbry/WavPack")
             (commit "e4e8d191e8dd74cbdbeaef3232c16a7ef517e68d")))
       (sha256
        (base32 "1zj8svk6giy1abq3940sz32ygz7zldppxl47852zgn5wfm3l2spx"))
       (file-name (git-file-name name version))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags
       (list "--disable-static")
       #:phases
       (modify-phases %standard-phases
         (replace 'bootstrap
           ;; Running ./autogen.sh would cause premature configuration.
           (lambda _
             (invoke "autoreconf" "-vif")
             #t)))))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)))
    (home-page "http://www.wavpack.com/")
    (synopsis "Hybrid lossless audio codec")
    (description
     "WavPack is an audio compression format with lossless, lossy and hybrid
compression modes.  This package contains command-line programs and library to
encode and decode wavpack files.")
    (license license:bsd-3)))

(define-public libmodplug
  (package
    (name "libmodplug")
    (version "0.8.9.0")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "mirror://sourceforge/modplug-xmms/"
                    name "/" version "/" name "-" version ".tar.gz"))
              (sha256
               (base32
                "1pnri98a603xk47smnxr551svbmgbzcw018mq1k6srbrq6kaaz25"))))
    (build-system gnu-build-system)
    (home-page "http://modplug-xmms.sourceforge.net/")
    (synopsis "Mod file playing library")
    (description
     "Libmodplug renders mod music files as raw audio data, for playing or
conversion.  mod, .s3m, .it, .xm, and a number of lesser-known formats are
supported.  Optional features include high-quality resampling, bass expansion,
surround and reverb.")
    (license license:public-domain)))

(define-public libxmp
  (package
    (name "libxmp")
    (version "4.4.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/xmp/libxmp/" version "/"
                                  name "-" version ".tar.gz"))
              (sha256
               (base32
                "1kycz4jsyvmf7ny9227b497wc7y5ligydi6fvvldmkf8hk63ad9m"))))
    (build-system gnu-build-system)
    (home-page "http://xmp.sourceforge.net/")
    (synopsis "Module player library")
    (description
     "Libxmp is a library that renders module files to PCM data.  It supports
over 90 mainstream and obscure module formats including Protracker (MOD),
Scream Tracker 3 (S3M), Fast Tracker II (XM), and Impulse Tracker (IT).")
    (license license:lgpl2.1+)))

(define-public xmp
  (package
    (name "xmp")
    (version "4.1.0")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/xmp/xmp/" version "/"
                                  name "-" version ".tar.gz"))
              (sha256
               (base32
                "17i8fc7x7yn3z1x963xp9iv108gxfakxmdgmpv3mlm438w3n3g8x"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("libxmp" ,libxmp)
       ("pulseaudio" ,pulseaudio)))
    (home-page "http://xmp.sourceforge.net/")
    (synopsis "Extended module player")
    (description
     "Xmp is a portable module player that plays over 90 mainstream and
obscure module formats, including Protracker MOD, Fasttracker II XM, Scream
Tracker 3 S3M and Impulse Tracker IT files.")
    (license license:gpl2+)))

(define-public soundtouch
  (package
    (name "soundtouch")
    (version "2.1.2")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://gitlab.com/soundtouch/soundtouch.git")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "174wgm3s0inmbnkrlnspxjwm2014qhjhkbdqa5r8rbfi0nzqxzsz"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("file" ,file)))
    (home-page "https://www.surina.net/soundtouch/")
    (synopsis
     "Audio processing library for changing tempo, pitch and playback rate")
    (description
     "SoundTouch is an audio processing library for changing the tempo, pitch
and playback rates of audio streams or audio files.  It is intended for
application developers writing sound processing tools that require tempo/pitch
control functionality, or just for playing around with the sound effects.")
    (license license:lgpl2.1+)))

(define-public sox
  (package
    (name "sox")
    (version "14.4.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://sourceforge/sox/sox/" version "/"
                                  name "-" version ".tar.bz2"))
              (sha256
               (base32
                "170lx90r1nlnb2j6lg00524iwvqy72p48vii4xc5prrh8dnrb9l1"))))
    (build-system gnu-build-system)
    (arguments
     '(#:configure-flags
       ;; The upstream asks to identify the distribution to diagnose SoX
       ;; bug reports.
       '("--with-distro=Guix System Distribution")))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("ao" ,ao)
       ("flac" ,flac)
       ("lame" ,lame)
       ("libid3tag" ,libid3tag)
       ("libltdl" ,libltdl)
       ("libmad" ,libmad)
       ("libpng" ,libpng)
       ("libvorbis" ,libvorbis)
       ("pulseaudio" ,pulseaudio)))
    (home-page "http://sox.sourceforge.net")
    (synopsis "Sound processing utility")
    (description
     "SoX (Sound eXchange) is a command line utility that can convert
various formats of computer audio files to other formats.  It can also
apply various effects to these sound files, and, as an added bonus, SoX
can play and record audio files.")
    ;; sox.c is distributed under GPL, while the files that make up
    ;; libsox are licensed under LGPL.
    (license (list license:gpl2+ license:lgpl2.1+))))

(define-public soxr
  (package
    (name "soxr")
    (version "0.1.3")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "mirror://sourceforge/soxr/soxr-" version
                       "-Source.tar.xz"))
       (sha256
        (base32 "12aql6svkplxq5fjycar18863hcq84c5kx8g6f4rj0lcvigw24di"))))
    (build-system cmake-build-system)
    (arguments '(#:tests? #f))          ;no 'check' target
    (home-page "https://sourceforge.net/p/soxr/wiki/Home/")
    (synopsis "One-dimensional sample-rate conversion library")
    (description
     "The SoX Resampler library (libsoxr) performs one-dimensional sample-rate
conversion.  It may be used, for example, to resample PCM-encoded audio.")
    (license license:lgpl2.1+)))

(define-public twolame
  (package
    (name "twolame")
    (version "0.4.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/twolame/twolame/" version
                           "/twolame-" version ".tar.gz"))
       (sha256
        (base32 "0zf8sxqb02w07ah55b1y7ab643zmpbhn62spa9pqra0rc17l4dfc"))))
    (build-system gnu-build-system)
    (inputs
     `(("libsndfile" ,libsndfile)))
    (native-inputs
     `(("perl" ,perl)
       ("which" ,which)))               ;used in tests/test.pl
    (home-page "http://www.twolame.org/")
    (synopsis "MPEG Audio Layer 2 (MP2) encoder")
    (description
     "TwoLAME is an optimised MPEG Audio Layer 2 (MP2) encoder based on
tooLAME by Mike Cheng, which in turn is based upon the ISO dist10 code and
portions of LAME.")
    (license license:lgpl2.1+)))

(define-public portaudio
  (package
    (name "portaudio")
    (version "190600.20161030")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "http://www.portaudio.com/archives/pa_stable_v"
             (string-map (lambda (c) (if (char=? c #\.) #\_ c)) version)
             ".tgz"))
       (sha256
        (base32 "04qmin6nj144b8qb9kkd9a52xfvm0qdgm8bg8jbl7s3frmyiv8pm"))
       (patches (search-patches "portaudio-audacity-compat.patch"))))
    (build-system gnu-build-system)
    (inputs
     ;; TODO: Add ASIHPI.
     `(("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)))
    ;; Autoreconf is necessary because the audacity-compat patch modifies .in
    ;; files.
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)))
    (arguments
     '(#:tests? #f                      ;no 'check' target
       #:parallel-build? #f             ;fails on some systems
       #:configure-flags '("--with-pic"
                           "--enable-cxx"
                           ;; XXX: The following prevents a build error
                           ;; because of missing depcomp when C++ bindings are
                           ;; requested.
                           "--disable-dependency-tracking")
       #:phases
       (modify-phases %standard-phases
         ;; This is needed for linking the static libraries
         (add-after 'unpack 'build-only-position-independent-code
           (lambda _
             (substitute* "configure.in"
               (("AC_PROG_LIBTOOL" m)
                (string-append m "\nAM_PROG_AR\nLT_INIT([pic-only])")))
             (delete-file "configure")
             #t))
         ;; Some headers are not installed by default, but are needed by
         ;; packages like Kaldi.
         (add-after 'install 'install-missing-headers
           (lambda* (#:key outputs #:allow-other-keys)
             (install-file "src/common/pa_ringbuffer.h"
                           (string-append (assoc-ref outputs "out") "/include"))
             #t)))))
    (home-page "http://www.portaudio.com/")
    (synopsis "Audio I/O library")
    (description
     "PortAudio is a portable C/C++ audio I/O library providing a simple API
to record and/or play sound using a callback function or a blocking read/write
interface.")
    (license license:expat)))

(define-public qsynth
  (package
    (name "qsynth")
    (version "0.5.7")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/qsynth/qsynth/" version
                           "/qsynth-" version ".tar.gz"))
       (sha256
        (base32 "18im4w8agj60nkppwbkxqnhpp13z5li3w30kklv4lgs20rvgbvl6"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f))                    ; no "check" phase
    (native-inputs
     `(("qttools" ,qttools)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("fluidsynth" ,fluidsynth)
       ("qtbase" ,qtbase)
       ("qtx11extras" ,qtx11extras)))
    (home-page "https://qsynth.sourceforge.io")
    (synopsis "Graphical user interface for FluidSynth")
    (description
     "Qsynth is a GUI front-end application for the FluidSynth SoundFont
synthesizer written in C++.")
    (license license:gpl2+)))

(define-public rsound
  (package
    (name "rsound")
    (version "1.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/Themaister/RSound")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0gspmr3klwnq98h17p5hc6ifygya4p80g4g8r7a1qavm3mv19waf"))))
    (build-system gnu-build-system)
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("jack" ,jack-1)
       ("ao" ,ao)
       ("libsamplerate" ,libsamplerate)
       ("openal" ,openal)
       ("portaudio" ,portaudio)
       ("pulseaudio" ,pulseaudio)))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key outputs #:allow-other-keys)
             (setenv "CC" "gcc")
             (invoke "./configure"
                     (string-append "--prefix=" (assoc-ref outputs "out"))))))
       ;; No 'check' target.
       #:tests? #f))
    (home-page "https://themaister.net/rsound.html")
    (synopsis "Networked audio system")
    (description
     "RSound allows you to send audio from an application and transfer it
directly to a different computer on your LAN network.  It is an audio daemon
with a much different focus than most other audio daemons.")
    (license license:gpl3+)))

(define-public xjackfreak
  (package
    (name "xjackfreak")
    (version "1.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/johnhldavis/xjackfreak")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "18c546qidbrj0f5wfiq5llii2192xpln0ab3r4vpr7i3wybxqjfz"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags
       (list (string-append "docdir=" (assoc-ref %outputs "out")
                            "/share/doc/xjackfreak"))))
    (inputs
     `(("jack" ,jack-1)
       ("libx11" ,libx11)
       ("libxt" ,libxt)
       ("libxext" ,libxext)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://github.com/johnhldavis/xjackfreak")
    (synopsis "JACK audio frequency analyzer and display")
    (description
     "XJackFreak is an audio analysis and equalizing tool for the Jack Audio
Connection Kit.  It can display the FFT of any input, modify it and output the
result.")
    (license license:gpl3+)))

(define-public zita-convolver
  (package
    (name "zita-convolver")
    (version "4.0.3")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/zita-convolver-"
                    version ".tar.bz2"))
              (snippet
               ;; Don't optimize for a specific processor architecture.
               '(begin
                  (substitute* "source/Makefile"
                    (("^CXXFLAGS \\+= -march=native") ""))
                  #t))
              (modules '((guix build utils)))
              (sha256
               (base32
                "0prji66p86z2bzminywkwchr5bfgxcg2i8y803pydd1hzf2198cs"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             (string-append "SUFFIX="))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-makefile-and-enter-directory
           (lambda _
             (substitute* "source/Makefile"
               (("ldconfig") "true")
               (("^LIBDIR =.*") "LIBDIR = lib\n"))
             (chdir "source")
             #t))
         (add-after 'install 'install-symlink
           (lambda _
             (symlink "libzita-convolver.so"
                      (string-append (assoc-ref %outputs "out")
                                     "/lib/libzita-convolver.so.4"))
             #t))
         ;; no configure script
         (delete 'configure))))
    (inputs `(("fftwf" ,fftwf)))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "Fast, partitioned convolution engine library")
    (description
     "Zita convolver is a C++ library providing a real-time convolution
engine.")
    (license license:gpl3+)))

(define-public zita-resampler
  (package
    (name "zita-resampler")
    (version "1.6.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/zita-resampler-"
                    version ".tar.bz2"))
              (snippet
               ;; Don't optimize for a specific processor architecture.
               '(begin
                  (substitute* '("apps/Makefile" "source/Makefile")
                    (("^CXXFLAGS \\+= -march=native") ""))
                  #t))
              (modules '((guix build utils)))
              (sha256
               (base32
                "1my5k2dh2dkvjp6xjnf9qy6i7s28z13kw1n9pwa4a2cpwbzawfr3"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             (string-append "SUFFIX="))
       #:phases
       (modify-phases %standard-phases
         (add-after
          'unpack 'patch-makefile-and-enter-directory
          (lambda _
            (substitute* "source/Makefile"
              (("ldconfig") "true")
              (("^LIBDIR =.*") "LIBDIR = lib\n"))
            (chdir "source")
            #t))
         (add-after
          'install 'install-symlink
          (lambda _
            (symlink "libzita-resampler.so"
                     (string-append (assoc-ref %outputs "out")
                                    "/lib/libzita-resampler.so.1"))
            #t))
         ;; no configure script
         (delete 'configure))))
    (home-page "https://kokkinizita.linuxaudio.org/linuxaudio/zita-resampler/resampler.html")
    (synopsis "C++ library for resampling audio signals")
    (description
     "Libzita-resampler is a C++ library for resampling audio signals.  It is
designed to be used within a real-time processing context, to be fast, and to
provide high-quality sample rate conversion.")
    (license license:gpl3+)))

(define-public zita-alsa-pcmi
  (package
    (name "zita-alsa-pcmi")
    (version "0.3.2")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "http://kokkinizita.linuxaudio.org"
                    "/linuxaudio/downloads/zita-alsa-pcmi-"
                    version ".tar.bz2"))
              (sha256
               (base32
                "12d7vdg74yh21w69qi0wg57iz4876j94qbiq09bvscih6xz9y78s"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f ; no "check" target
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
             (string-append "SUFFIX="))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-makefile-and-enter-directory
           (lambda _
             (substitute* "source/Makefile"
               (("ldconfig") "true")
               (("^LIBDIR =.*") "LIBDIR = lib\n"))
             (chdir "source")
             #t))
         (add-after 'install 'install-symlink
           (lambda _
             (symlink "libzita-alsa-pcmi.so"
                      (string-append (assoc-ref %outputs "out")
                                     "/lib/libzita-alsa-pcmi.so.0"))
             #t))
          ;; no configure script
          (delete 'configure))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("fftw" ,fftw)))
    (home-page "https://kokkinizita.linuxaudio.org")
    (synopsis "C++ wrapper around the ALSA API")
    (description
     "Zita-alsa-pcmi is a C++ wrapper around the ALSA API.  It provides easy
access to ALSA PCM devices, taking care of the many functions required to
open, initialise and use a hw: device in mmap mode, and providing floating
point audio data.")
    (license license:gpl3+)))

(define-public cuetools
  (package
    (name "cuetools")
    (version "1.4.1")
    (source (origin
             (method git-fetch)
             (uri (git-reference
                   (url "https://github.com/svend/cuetools")
                   (commit version)))
             (file-name (git-file-name name version))
             (sha256
              (base32
               "02ksv1ahf1v4cr2xbclsfv5x17m9ivzbssb5r8xjm97yh8a7spa3"))))
    (build-system gnu-build-system)
    ;; The source checkout is not bootstrapped.
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("flex" ,flex)
       ("bison" ,bison)))
    (synopsis "Cue and toc file parsers and utilities")
    (description "Cuetools is a set of programs that are useful for manipulating
and using CUE sheet (cue) files and Table of Contents (toc) files.  CUE and TOC
files are a way to represent the layout of a data or audio CD in a
machine-readable ASCII format.")
    (home-page "https://github.com/svend/cuetools")
    (license license:gpl2+)))

(define-public shntool
  (package
    (name "shntool")
    (version "3.0.10")
    (source (origin
             (method url-fetch)
             (uri (string-append "http://etree.org/shnutils/shntool/dist/src/"
                                 "shntool-" version ".tar.gz"))
             (sha256
              (base32
               "00i1rbjaaws3drkhiczaign3lnbhr161b7rbnjr8z83w8yn2wc3l"))))
    (build-system gnu-build-system)
    (synopsis "WAVE audio data processing tool")
    (description "shntool is a multi-purpose WAVE data processing and reporting
utility.  File formats are abstracted from its core, so it can process any file
that contains WAVE data, compressed or not---provided there exists a format
module to handle that particular file type.  It can also generate CUE files, and
use them split WAVE data into multiple files.")
    (home-page "http://etree.org/shnutils/shntool/")
    ;; 'install-sh' bears the x11 license
    (license (list license:gpl2+ license:x11))))

(define-public dcadec
  (package
    (name "dcadec")
    (version "0.2.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/foo86/dcadec")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "07nd0ajizrp1w02bsyfcv18431r8m8rq8gjfmz9wmckpg7cxj2hs"))))
    (build-system gnu-build-system)
    (arguments
     ;; Test files are missing: https://github.com/foo86/dcadec/issues/53
     '(#:tests? #f
       #:make-flags
       (list "CC=gcc"
             ;; Build shared library.
             "CONFIG_SHARED=1"
             (string-append "PREFIX=" (assoc-ref %outputs "out"))
             ;; Set proper runpath.
             (string-append "LDFLAGS=-Wl,-rpath="
                            (assoc-ref %outputs "out")
                            "/lib"))
       #:phases
       (modify-phases %standard-phases
         ;; No configure script, just a hand-written Makefile.
         (delete 'configure))))
    (synopsis "DTS Coherent Acoustics decoder")
    (description "Dcadec is a DTS Coherent Acoustics surround sound decoder
with support for HD extensions.")
    (home-page "https://github.com/foo86/dcadec")
    (license license:lgpl2.1+)))

(define-public bs1770gain
  (package
    (name "bs1770gain")
    (version "0.7.0")
    (home-page "https://manpages.debian.org/sid/bs1770gain/bs1770gain.1.en.html")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/bs1770gain/bs1770gain/"
                           version "/bs1770gain-" version ".tar.gz"))
       (sha256
        (base32 "0a2dcaxvxy5m3a5sb1lhplsymvz3ypaiidc5xn9qy01h53zvyvkp"))
       (modules '((guix build utils)))
       (snippet
        `(begin
           ;; XXX
           (substitute* (find-files "." "\\.[ch]$")
             (("^ \\* N..o.*") ""))
           (substitute* "libbg/bgx.c"
             (("#define BG.* ") "#define BS ")
             (("BG.*NO?.*N.*S.*E.*N.*SE?") "NO")
             (("\"( #|N).*\"") "\"\""))
           (substitute* (list "config.h"
                              "configure.ac"
                              "configure")
             (("https?://bs1770gain[^/]*/")
              ,home-page))
           #t))))
    (build-system gnu-build-system)
    (inputs `(("ffmpeg" ,ffmpeg)
              ("sox" ,sox)))
    (synopsis "Tool to adjust loudness of media files")
    (description
     "BS1770GAIN is a loudness scanner compliant with ITU-R BS.1770 and its
flavors EBU R128, ATSC A/85, and ReplayGain 2.0.  It helps normalizing the
loudness of audio and video files to the same level.")
    (license license:gpl2+)))

(define-public filteraudio
  (let ((revision "1")
        (commit "2fc669581e2a0ff87fba8de85861b49133306094"))
    (package
      (name "filteraudio")
      (version (string-append "0.0.0-" revision "."
                              (string-take commit 7)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/irungentoo/filter_audio")
               (commit commit)))
         (file-name (string-append name "-" version "-checkout"))
         (sha256
          (base32
           "0hbb290n3wb23f2k692a6bhc23nnqmxqi9sc9j15pnya8wifw64g"))))
      (build-system gnu-build-system)
      (arguments
       '(#:make-flags (list (string-append "PREFIX=" %output)
                            "CC=gcc")
         #:tests? #f ; No tests
         #:phases
         (modify-phases %standard-phases
           ;; No configure script
           (delete 'configure))))
      (synopsis "Lightweight audio filtering library")
      (description "An easy to use audio filtering library made from webrtc
code, used in @code{libtoxcore}.")
      (home-page "https://github.com/irungentoo/filter_audio")
      (license license:bsd-3))))

(define-public gsm
  (package
    (name "gsm")
    (version "1.0.19")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "http://www.quut.com/" name "/" name
                       "-" version ".tar.gz"))
       (sha256
        (base32
         "1xkha9ss5g5qnfaybi8il0mcvp8knwg9plgh8404vh58d0pna0s9"))))
    (build-system gnu-build-system)
    (arguments
     `(#:test-target "tst"
       #:make-flags (list (string-append "INSTALL_ROOT=" %output))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'add-fpic-ccflag
           (lambda _
             ;; The -fPIC compiler option is needed when building
             ;; mediastreamer.
             (substitute* "Makefile"
               (("^CCFLAGS.*" all)
                (string-append all "CCFLAGS += -fPIC\n")))
             #t))
         (add-before 'install 'pre-install
           (lambda _
             (let ((out (assoc-ref %outputs "out")))
               (mkdir-p (string-append out "/inc"))
               (mkdir-p (string-append out "/man"))
               (mkdir-p (string-append out "/man/man1"))
               (mkdir-p (string-append out "/man/man3"))
               (mkdir-p (string-append out "/bin"))
               (mkdir-p (string-append out "/lib")))
             #t))
         (add-after 'install 'post-install
           (lambda _
             (let ((out (assoc-ref %outputs "out")))
               (rename-file (string-append out "/inc")
                            (string-append out "/include"))
               (mkdir-p (string-append out "/include/gsm"))
               (copy-recursively "inc"
                                 (string-append out "/include/gsm")))
             #t))
         (delete 'configure))))         ; no configure script
    (synopsis "GSM 06.10 lossy speech compression library")
    (description "This C library provides an encoder and a decoder for the GSM
06.10 RPE-LTP lossy speech compression algorithm.")
    (home-page "http://quut.com/gsm/")
    (license (license:non-copyleft "file://COPYRIGHT"))))

(define-public python-pyalsaaudio
  (package
    (name "python-pyalsaaudio")
    (version "0.8.4")
    (source (origin
              (method url-fetch)
              (uri (pypi-uri "pyalsaaudio" version))
              (sha256
               (base32
                "1180ypn9596rq4b7y7dyv627j1q0fqilmkkrckclnzsdakdgis44"))))
    (build-system python-build-system)
    (arguments
     `(#:tests? #f))                   ; tests require access to ALSA devices.
    (inputs
     `(("alsa-lib" ,alsa-lib)))
    (home-page "https://larsimmisch.github.io/pyalsaaudio/")
    (synopsis "ALSA wrappers for Python")
    (description
     "This package contains wrappers for accessing the ALSA API from Python.
It is currently fairly complete for PCM devices, and has some support for
mixers.")
    (license license:psfl)))

(define-public python2-pyalsaaudio
  (package-with-python2 python-pyalsaaudio))

(define-public bluez-alsa
  (package
    (name "bluez-alsa")
    (version "2.0.0")
    (source (origin
              ;; The tarballs are mere snapshots and don't contain a
              ;; bootstrapped build system.
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/Arkq/bluez-alsa")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "08mppgnjf1j2733bk9yf0cny6rfxxwiys0s62lz2zd2lpdl6d9lz"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags
       (list (string-append "--with-alsaplugindir="
                            (assoc-ref %outputs "out")
                            "/lib/alsa-lib")
             (string-append "--with-dbusconfdir="
                            (assoc-ref %outputs "out")
                            "/etc/dbus-1/system.d"))))
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("bluez" ,bluez)
       ("dbus" ,dbus)
       ("glib" ,glib)
       ("libbsd" ,libbsd)
       ("ncurses" ,ncurses)
       ("ortp" ,ortp)
       ("sbc" ,sbc)))
    (home-page "https://github.com/Arkq/bluez-alsa")
    (synopsis "Bluetooth ALSA backend")
    (description "This project is a rebirth of a direct integration between
Bluez and ALSA.  Since Bluez >= 5, the build-in integration has been removed
in favor of 3rd party audio applications.  From now on, Bluez acts as a
middleware between an audio application, which implements Bluetooth audio
profile, and a Bluetooth audio device.  BlueALSA registers all known Bluetooth
audio profiles in Bluez, so in theory every Bluetooth device (with audio
capabilities) can be connected.  In order to access the audio stream, one has
to connect to the ALSA PCM device called @code{bluealsa}.  The device is based
on the ALSA software PCM plugin.")
    (license license:expat)))

(define-public snd
  (package
    (name "snd")
    (version "20.6")
    (source (origin
              (method url-fetch)
              (uri (string-append "ftp://ccrma-ftp.stanford.edu/pub/Lisp/"
                                  "snd-" version ".tar.gz"))
              (sha256
               (base32
                "1h4dsq5xcvwjbnayhn719cln0lg199w3xm59sl9d2jz8bq78gqgj"))))
    (build-system glib-or-gtk-build-system)
    (arguments
     `(#:tests? #f                      ; no tests
       #:out-of-source? #f              ; for the 'install-doc' phase
       #:configure-flags
       (let* ((out (assoc-ref %outputs "out"))
              (docdir (string-append out "/share/doc/"
                                     ,name "-" ,version)))
         (list "--with-alsa" "--with-jack" "--with-gmp"
               (string-append "--with-doc-dir=" docdir)))
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'install-doc
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (doc (string-append out "/share/doc/"
                                        ,name "-" ,version)))
               (for-each
                (lambda (f)
                  (install-file f doc))
                (find-files "." "\\.html$"))
               (copy-recursively "pix" (string-append doc "/pix"))
               #t))))))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("fftw" ,fftw)
       ("flac" ,flac)
       ("gmp" ,gmp)
       ("gsl" ,gsl)
       ("gtk+" ,gtk+)
       ("jack" ,jack-1)
       ("libsamplerate" ,libsamplerate)
       ("mpc" ,mpc)
       ("mpfr" ,mpfr)
       ("mpg123" ,mpg123)
       ("speex" ,speex)
       ("timidity++" ,timidity++)
       ("vorbis-tools" ,vorbis-tools)
       ("wavpack" ,wavpack)))
    (synopsis "Sound editor")
    (home-page "https://ccrma.stanford.edu/software/snd/")
    (description
     "Snd is a sound editor modelled loosely after Emacs.  It can be
customized and extended using either the s7 Scheme implementation (included in
the Snd sources), Ruby, or Forth.")
    (license (license:non-copyleft "file://COPYING"))))

(define-public noise-repellent
  (package
    (name "noise-repellent")
    (version "0.1.5")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/lucianodato/noise-repellent")
                    (commit version)))
              (file-name (string-append name "-" version "-checkout"))
              (sha256
               (base32
                "0hb89x9i2knzan46q4nwscf5zmnb2nwf4w13xl2c0y1mx1ls1mwl"))))
    (build-system meson-build-system)
    (arguments
     `(#:configure-flags
       (list (string-append "--prefix=" (assoc-ref %outputs "out")
                            "/lib/lv2"))))
    (inputs
     `(("lv2" ,lv2)
       ("fftwf" ,fftwf)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://github.com/lucianodato/noise-repellent")
    (synopsis "LV2 plugin for broadband noise reduction")
    (description "Noise Repellent is an LV2 plugin to reduce noise.  It has
the following features:

@enumerate
@item Spectral gating and spectral subtraction suppression rule
@item Adaptive and manual noise thresholds estimation
@item Adjustable noise floor
@item Adjustable offset of thresholds to perform over-subtraction
@item Time smoothing and a masking estimation to reduce artifacts
@item Basic onset detector to avoid transients suppression
@item Whitening of the noise floor to mask artifacts and to recover higher
  frequencies
@item Option to listen to the residual signal
@item Soft bypass
@item Noise profile saved with the session
@end enumerate
")
    (license license:lgpl3+)))

(define-public cli-visualizer
  (package
    (name "cli-visualizer")
    (version "1.8")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/dpayne/cli-visualizer")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "003mbbwsz43mg3d7llphpypqa9g7rs1p1cdbqi1mbc2bfrc1gcq2"))))
    (build-system cmake-build-system)
    (native-inputs
     ;; TODO: Try using the latest googletest for versions > 1.8.
     `( ;; ("googletest" ,googletest-1.8)
       ("which" ,which)))
    (inputs
     `(("fftw" ,fftw)
       ("ncurses" ,ncurses)
       ("pulseaudio" ,pulseaudio)))
    (arguments
     '(#:tests? #f
       ;; XXX Enable tests after patching them to use the system googletest.
       ;; #:configure-flags (list "-DVIS_WITH_TESTS=true")
       #:phases
       (modify-phases %standard-phases
         (add-after 'install 'install-examples
           (lambda* (#:key outputs #:allow-other-keys)
             (with-directory-excursion "../source/examples"
               (delete-file "mac_osx_config")
               (for-each (lambda (file)
                           (install-file file
                                         (string-append
                                          (assoc-ref outputs "out")
                                          "/share/doc")))
                         (find-files ".")))
             #t)))))
    (home-page "https://github.com/dpayne/cli-visualizer/")
    (synopsis "Command-line audio visualizer")
    (description "@code{cli-visualizer} displays fast-Fourier
transforms (FFTs) of the sound being played, as well as other graphical
representations.")
    (license license:expat)))

(define-public cava
  (package
    (name "cava")
    (version "0.6.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/karlstav/cava")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1kvhqgijs29909w3sq9m0bslx2zxxn4b3i07kdz4hb0dqkppxpjy"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)))
    (inputs
     `(("fftw" ,fftw)
       ("ncurses" ,ncurses)
       ("pulseaudio" ,pulseaudio)))
    (arguments
     `(#:configure-flags
       (list (string-append "PREFIX=" %output)
             (string-append "FONT_DIR=" %output "/share/consolefonts"))
       #:make-flags
       (let ((lib (string-append %output "/lib")))
         (list (string-append "cava_LDFLAGS = -L" lib " -Wl,-rpath " lib)))
       #:phases
       (modify-phases %standard-phases
         (replace 'bootstrap
           (lambda* (#:key outputs #:allow-other-keys)
             (setenv "HOME" (getcwd))
             (invoke "sh" "autogen.sh")))
         (add-before 'build 'make-cava-ldflags
           (lambda* (#:key outputs #:allow-other-keys)
             (mkdir-p (string-append (assoc-ref outputs "out") "/lib"))
             #t))
         (add-after 'install 'data
           (lambda* (#:key outputs #:allow-other-keys)
             (for-each (lambda (file)
                         (install-file file
                                       (string-append (assoc-ref outputs "out")
                                                      "/share/doc/examples")))
                       (find-files "example_files"))
             #t)))))
    (home-page "https://karlstav.github.io/cava/")
    (synopsis "Console audio visualizer for ALSA, MPD, and PulseAudio")
    (description "C.A.V.A. is a bar audio spectrum visualizer for the terminal
using ALSA, MPD, PulseAudio, or a FIFO buffer as its input.")
    (license license:expat)))

(define-public fluid-3
  (let ((commit "871c8ce2002e8b3c198f532fdb4fbcce7914f951"))
    (package
      (name "fluid-3")
      (version "2.1")
      (source
       (origin
         (method url-fetch)
         ;; Only one file is required, but the release bundles the whole
         ;; software which is 50MiB as tar and 200MiB unpacked. The website
         ;; directly links the soundfont release to the github file download.
         (uri (string-append "https://github.com/musescore/MuseScore/raw/"
                             commit "/share/sound/FluidR3Mono_GM.sf3"))
         (file-name (string-append name "-" version ".sf3"))
         (sha256
          (base32
           "1hjfg5i15bw9279007xs92zsggjgn4s4k9pc00s851l3kvc6dkfg"))))
      (build-system trivial-build-system)
      (arguments
       `(#:modules ((guix build utils))
         #:builder
         (begin
           (use-modules (guix build utils))
           (let ((file (assoc-ref %build-inputs "source"))
                 (out (string-append %output "/share/soundfonts")))
             (mkdir-p out)
             (copy-file file (string-append out "/FluidR3Mono_GM.sf3"))
             #t))))
      (home-page  "https://github.com/musescore/MuseScore/tree/master/share/sound")
      (synopsis "Pro-quality GM soundfont")
      (description "Fluid-3 is Frank Wen's pro-quality GM soundfont.")
      (license license:expat))))

(define-public libfdk
  (package
    (name "libfdk")
    (version "2.0.1")
    (source
      (origin
        (method git-fetch)
        (uri (git-reference
               (url "https://github.com/mstorsjo/fdk-aac")
               (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
         (base32
          "1fkrnzs78fmj11n9z3l0w53i2fl16jcfiyavwidck9bzmkmsf486"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("autoconf" ,autoconf)
       ("automake" ,automake)
       ("libtool" ,libtool)))
    (home-page "https://github.com/mstorsjo/fdk-aac")
    (synopsis "Fraunhofer FDK AAC library")
    (description "FDK is a library for encoding and decoding Advanced Audio
Coding (AAC) format audio, developed by Fraunhofer IIS, and included as part of
Android.  It supports several Audio Object Types including MPEG-2 and MPEG-4 AAC
LC, HE-AAC (AAC LC + SBR), HE-AACv2 (LC + SBR + PS) as well AAC-LD (low delay)
and AAC-ELD (enhanced low delay) for real-time communication.  The encoding
library supports sample rates up to 96 kHz and up to eight channels (7.1
                                                                     surround).")
    (license (license:fsf-free "https://github.com/mstorsjo/fdk-aac/blob/master/NOTICE"
                               "https://www.gnu.org/licenses/license-list.html#fdk"))))

(define-public libopenshot-audio
  (package
    (name "libopenshot-audio")
    (version "0.2.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/OpenShot/libopenshot-audio")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "13if0m5mvlqly8gmbhschzb9papkgp3yqivklhb949dhy16m8zgf"))))
    (build-system cmake-build-system)
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ;; The following are for JUCE GUI components:
       ("libx11" ,libx11)
       ("freetype" ,freetype)
       ("libxrandr" ,libxrandr)
       ("libxinerama" ,libxinerama)
       ("libxcursor" ,libxcursor)))
    (arguments
     `(#:tests? #f                      ;there are no tests
       #:configure-flags
       (list (string-append "-DCMAKE_CXX_FLAGS=-I"
                            (assoc-ref %build-inputs "freetype")
                            "/include/freetype2"))))
    (home-page "https://openshot.org")
    (synopsis "Audio editing and playback for OpenShot")
    (description "OpenShot Audio Library (libopenshot-audio) allows
high-quality editing and playback of audio, and is based on the JUCE
library.")
    (license license:lgpl3+)))

(define-public faudio
  (package
    (name "faudio")
    (version "19.11")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/FNA-XNA/FAudio")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0ckpr6ffz8ssfh1y850dhip5s5jv0j6n90qz5yx1v9d6gpwf08rp"))))
    (arguments
     '(#:tests? #f                      ; No tests.
       #:configure-flags '("-DFFMPEG=ON")))
    (build-system cmake-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("ffmpeg" ,ffmpeg)
              ("sdl2" ,sdl2)))
    (home-page "https://github.com/FNA-XNA/FAudio")
    (synopsis "XAudio reimplementation")
    (description "FAudio is an XAudio reimplementation that focuses solely on
developing fully accurate DirectX Audio runtime libraries.")
    (license license:zlib)))

(define-public gnaural
  (package
    (name "gnaural")
    (version "20110606")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/gnaural/Gnaural/gnaural_"
                           version ".tar.xz"))
       (sha256
        (base32
         "1gq519c0imsh57zklyi0f8h64l3ai48lh672c834470z8c6kvbfi"))))
    (build-system gnu-build-system)
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("gtk+" ,gtk+-2)
       ("libsndfile" ,libsndfile)
       ("portaudio" ,portaudio)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "http://gnaural.sourceforge.net/")
    (synopsis "Binaural beat synthesizer")
    (description "Gnaural is a programmable auditory binaural beat synthesizer
intended to be used for brainwave entrainment.  Gnaural supports creation of
binaural beat tracks of different frequencies and exporting of tracks into
different audio formats.  Gnaural can also be linked over the internet with
other Gnaural instances, allowing synchronous sessions between many users.")
    (license license:gpl2+)))

(define-public darkice
  (package
    (name "darkice")
    (version "1.4")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://github.com/rafael2k/darkice/releases/"
                                  "download/v" version "/darkice-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "05yq7lggxygrkd76yiqby3msrgdn082p0qlvmzzv9xbw8hmyra76"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    (inputs `(("lame" ,lame)
              ("libvorbis" ,libvorbis)
              ("opus" ,opus)
              ("twolame" ,twolame)
              ("alsa-lib" ,alsa-lib)
              ("pulseaudio" ,pulseaudio)
              ("jack" ,jack-1)
              ("libsamplerate" ,libsamplerate)))
    (arguments
     `(#:configure-flags
       (list (string-append "--with-lame-prefix="
                            (assoc-ref %build-inputs "lame")))))
    (home-page "http://www.darkice.org/")
    (synopsis "Live audio streamer")
    (description "DarkIce is a live audio streamer.  It takes audio input from
a sound card, encodes it into Ogg Vorbis and/or mp3, and sends the audio
stream to one or more IceCast and/or ShoutCast servers.")
    (license license:gpl3+)))

(define-public libltc
  (package
    (name "libltc")
    (version "1.3.1")
    (source
     (origin
       (method url-fetch)
       (uri
        (string-append "https://github.com/x42/libltc/releases/download/v"
                       version "/libltc-" version ".tar.gz"))
       (sha256
        (base32
         "173h9dgmain3nyrwk6q2d7yl4fnh4vacag4s2p01n5b7nyrkxrjh"))))
    (build-system gnu-build-system)
    (arguments
     `(#:parallel-tests? #f))           ;tests fail otherwise
    (native-inputs
     `(("doxygen" ,doxygen)
       ("pkg-config" ,pkg-config)))
    (synopsis "Encode or decode Linear/Longitudinal Time Code (LTC) audio")
    (description "Libltc is a POSIX-C Library for handling
@dfn{Linear/Longitudinal Time Code} (LTC) data.")
    (home-page "https://x42.github.io/libltc/")
    (license license:lgpl3+)))

(define-public ttaenc
  (package
    (name "ttaenc")
    (version "3.4.1")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/tta/"
                           "tta/ttaenc-src"
                           "/ttaenc-" version "-src.tgz"))
       (sha256
        (base32
         "1iixpr4b89g9g1hwn8ak8k8iflcww3r5f09a117qdidc2nqcijdj"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ;no tests
       #:make-flags
       (list (string-append "CC=" ,(cc-for-target))
             (string-append "INSDIR=" (assoc-ref %outputs "out") "/bin"))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)            ; no configure
         (add-before 'install 'make-bindir
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out")))
               (mkdir-p (string-append out "/bin"))
               #t))))))
    (synopsis "TTA lossless audio encoder")
    (description
     "TTA performs lossless compression on multichannel 8,16 and 24 bits
data of the Wav audio files.  Being lossless means that no data-
quality is lost in the compression - when uncompressed, the data will
be identical to the original.  The compression ratios of TTA depend on
the type of music file being compressed, but the compression size
will generally range between 30% - 70% of the original.  TTA format
supports both of ID3v1/v2 and APEv2 tags.")
    (home-page "http://tausoft.org/")
    (license license:gpl2+)))

(define-public redkite
  (package
    (name "redkite")
    (version "0.8.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://gitlab.com/geontime/redkite.git")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "17kv2jc4jvn3sdicz3sf8dnf25wbvv7ijzkr0mm0sbrrjz6vrwz0"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f))                    ;no tests included
    (inputs
     `(("cairo" ,cairo)))
    (native-inputs
     `(("pkg-config", pkg-config)))
    (synopsis "Small GUI toolkit")
    (description "Redkite is a small GUI toolkit developed in C++17 and
inspired from other well known GUI toolkits such as Qt and GTK.  It is
minimal on purpose and is intended to be statically linked to applications,
therefore satisfying any requirements they may have to be self contained,
as is the case with audio plugins.")
    (home-page "https://gitlab.com/geontime/redkite")
    (license license:gpl3+)))

(define-public carla
  (package
    (name "carla")
    (version "2.1.1")
    (source
     (origin
       (method git-fetch)
       (uri
        (git-reference
         (url "https://github.com/falkTX/Carla")
         (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "0c3y4a6cgi4bv1mg57i3qn5ia6pqjqlaylvkapj6bmpsw71ig22g"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ; no "check" target
       #:make-flags
       (list (string-append "PREFIX=" (assoc-ref %outputs "out")))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)            ; no configure script
         (add-before 'build 'set-CC-variable-and-show-features
           (lambda _
             (setenv "CC" "gcc")
             (invoke "make" "features")))
         (add-after 'install 'make-carla-executable
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (chmod (string-append out "/share/carla/carla") #o555)
               #t)))
         (add-after 'install 'wrap-executables
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (wrap-script (string-append out "/bin/carla")
                            `("PYTHONPATH" ":" prefix (,(getenv "PYTHONPATH"))))
               #t))))))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("ffmpeg" ,ffmpeg)
       ("fluidsynth" ,fluidsynth)
       ("file" ,file)
       ("liblo" ,liblo)
       ("libsndfile" ,libsndfile)
       ("gtk2" ,gtk+-2)   ;needed for bridging GTK2 plugins in GTK3 hosts
       ("gtk+" ,gtk+)
       ("python-pyliblo" ,python-pyliblo)
       ("python-pyqt" ,python-pyqt)
       ("python-rdflib" ,python-rdflib)
       ;; python-pyqt shows the following error without python-wrapper:
       ;; Error while finding module specification for 'PyQt5.uic.pyuic'
       ;; (ModuleNotFoundError: No module named 'PyQt5')
       ("python-wrapper" ,python-wrapper)
       ("libx11" ,libx11)
       ("qtbase" ,qtbase)
       ("zlib" ,zlib)

       ;; For WRAP-SCRIPT above.
       ("guile" ,guile-2.2)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (home-page "https://kx.studio/Applications:Carla")
    (synopsis "Audio plugin host")
    (description "Carla is a modular audio plugin host, with features like
transport control, automation of parameters via MIDI CC and remote control
over OSC.  Carla currently supports LADSPA (including LRDF), DSSI, LV2, VST2,
and VST3 plugin formats, plus SF2 and SFZ file support.  It uses JACK as the
default and preferred audio driver but also supports native drivers like ALSA.")
    (license license:gpl2+)))

(define-public ecasound
  (package
    (name "ecasound")
    (version "2.9.3")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://nosignal.fi/download/ecasound-"
                                  version ".tar.gz"))
              (sha256
               (base32 "1m7njfjdb7sqf0lhgc4swihgdr4snkg8v02wcly08wb5ar2fr2s6"))))
    (build-system gnu-build-system)
    (native-inputs `(("pkg-config" ,pkg-config)))
    ;; It would be nice to add mikmod to inputs if that gets packaged
    ;; eventually.
    (inputs `(("alsa-lib" ,alsa-lib)
              ("jack" ,jack-1)
              ("mpg123" ,mpg123)
              ("lame" ,lame)
              ("vorbis-tools" ,vorbis-tools)
              ("faad2" ,faad2)
              ("flac" ,flac)
              ("timidity++" ,timidity++)
              ("libsndfile" ,libsndfile)
              ("libsamplerate" ,libsamplerate)
              ("ncurses" ,ncurses)
              ("ladspa" ,ladspa)
              ("lilv" ,lilv)))
    (home-page "https://nosignal.fi/ecasound/index.php")
    (synopsis "Multitrack audio processing")
    (description "Ecasound is a software package designed for multitrack audio
processing. It can be used for simple tasks like audio playback, recording and
format conversions, as well as for multitrack effect processing, mixing,
recording and signal recycling. Ecasound supports a wide range of audio inputs,
outputs and effect algorithms. Effects and audio objects can be combined in
various ways, and their parameters can be controlled by operator objects like
oscillators and MIDI-CCs. A versatile console mode user-interface is included
in the package.")
    ;; As an exception to the above, the C, C++ and python implementations
    ;; of the Ecasound Control Interface (ECI) are licensed under the LGPL
    ;; (see the file 'COPYING.LGPL'). This allows writing ECI applications
    ;; that are not licensed under GPL.
    (license (list license:gpl2 license:lgpl2.1))))

(define-public libaudec
  (package
    (name "libaudec")
    (version "0.2.3")
    (source
      (origin
        (method git-fetch)
        (uri (git-reference
               (url "https://git.zrythm.org/git/libaudec")
               (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
          (base32
            "04hw61db8wscj28qjyiaiafx8xl87njgmvqszxyhs4gmg8xgjip7"))))
   (build-system meson-build-system)
   (arguments
     ;; Compile tests.
    `(#:configure-flags `("-Dtests=true")))
   (inputs
    `(("libsamplerate" ,libsamplerate)
      ("libsndfile" ,libsndfile)))
   (native-inputs
     `(("pkg-config", pkg-config)))
   (synopsis "Library for reading and resampling audio files")
   (description "libaudec is a wrapper library over ffmpeg, sndfile and
libsamplerate for reading and resampling audio files, based on Robin Gareus'
@code{audio_decoder} code.")
   (home-page "https://git.zrythm.org/cgit/libaudec")
   (license license:agpl3+)))

(define-public lv2lint
  (package
    (name "lv2lint")
    (version "0.4.0")
    (source
      (origin
        (method git-fetch)
        (uri (git-reference
               (url "https://git.open-music-kontrollers.ch/lv2/lv2lint")
               (commit version)))
        (file-name (git-file-name name version))
        (sha256
          (base32
            "1pspwqpzl2dw1hd9ra9yr53arqbbqjn7d7j0f7p9g3iqa76vblpi"))))
    (build-system meson-build-system)
    (arguments
     `(#:configure-flags
       `("-Delf-tests=true" ; for checking symbol visibility
         "-Donline-tests=true"))) ; for checking URI existence
    (inputs
      `(("curl", curl)
        ("libelf", libelf)
        ("lilv", lilv)))
    (native-inputs
      `(("pkg-config", pkg-config)))
    (synopsis "LV2 plugin lint tool")
    (description "lv2lint is an LV2 lint-like tool that checks whether a
given plugin and its UI(s) match up with the provided metadata and adhere
to well-known best practices.")
    (home-page "https://open-music-kontrollers.ch/lv2/lv2lint/")
    (license license:artistic2.0)))

(define-public lv2toweb
  (package
    (name "lv2toweb")
    (version "0.4")
    (source
      (origin
        (method git-fetch)
        (uri (git-reference
               (url "https://github.com/x42/lv2toweb")
               (commit (string-append "v" version))))
        (file-name (git-file-name name version))
        (sha256
          (base32
            "007aysqvgkf25za8nkmyd5g9kp1zla460dcpidlj5xg1zc3fcdfi"))))
    (build-system gnu-build-system)
    (arguments
    `(#:tests? #f  ; no "check" target
      #:make-flags (list "CC=gcc"
                         (string-append "PREFIX=" (assoc-ref %outputs "out")))
      #:phases
      (modify-phases %standard-phases
        (delete 'configure))))
    (inputs
      `(("jalv", jalv)
        ("lilv", lilv)))
    (native-inputs
      `(("help2man", help2man)
        ("pkg-config", pkg-config)))
    (synopsis "Documentation generator for LV2 plugins")
    (description
      "lv2toweb allows the user to create an xhtml page with information
about the given LV2 plugin, provided that the plugin and its UI(s) match up
with the provided metadata and adhere to well-known best practices.")
    (home-page "https://github.com/x42/lv2toweb")
    (license (list license:isc license:gpl2))))

(define-public ztoolkit
  (package
    (name "ztoolkit")
    (version "0.1.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://git.zrythm.org/git/ztoolkit")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "07xl3cmdaf7k9mm58m93cn8i1jvgimmiifdw1w7v2jl88nx60pm1"))))
    (build-system meson-build-system)
    (inputs
     `(("cairo" ,cairo)
       ("libx11" ,libx11)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (synopsis "GUI toolkit for LV2 plugins")
    (description "ZToolkit (Ztk) is a cross-platform GUI toolkit heavily
inspired by GTK.  It handles events and low level drawing on behalf of
the user and provides a high-level API for managing the UI and custom
widgets.  ZToolkit is written in C and was created to be used for building
audio plugin UIs, where the dependencies often need to be kept to a
minimum.")
    (home-page "https://git.zrythm.org/cgit/ztoolkit/")
    (license license:agpl3+)))

(define-public libinstpatch
  (package
    (name "libinstpatch")
    (version "1.1.5")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/swami/libinstpatch")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0psx4hc5yksfd3k2xqsc7c8lbz2d4yybikyddyd9hlkhq979cmjb"))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f)) ;there are no tests
    (native-inputs
     `(("glib:bin" ,glib "bin")
       ("pkg-config" ,pkg-config)))
    (inputs
     `(("glib" ,glib)
       ("libsndfile" ,libsndfile)))
    (home-page "http://www.swamiproject.org/")
    (synopsis "Instrument file software library")
    (description
     "libInstPatch is a library for processing digital sample based MIDI
instrument \"patch\" files.  The types of files libInstPatch supports are used
for creating instrument sounds for wavetable synthesis.  libInstPatch provides
an object framework (based on GObject) to load patch files, which can then be
edited, converted, compressed and saved.")
    (license license:lgpl2.1)))

(define-public ztoolkit-rsvg
  (package
    (inherit ztoolkit)
    (name "ztoolkit-rsvg")
    (arguments
     `(#:configure-flags `("-Denable_rsvg=true")))
    (inputs
     `(("librsvg" ,librsvg)
       ,@(package-inputs ztoolkit)))
    (synopsis "ZToolkit with SVG support")))

(define-public codec2
  (package
    (name "codec2")
    (version "0.9.2")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/drowe67/codec2")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1jpvr7bra8srz8jvnlbmhf8andbaavq5v01qjnp2f61za93rzwba"))))
    (build-system cmake-build-system)
    (native-inputs
     `(("bc" ,bc)
       ("octave" ,octave)
       ("valgrind" ,valgrind)))
    (arguments
     `(#:tests? #f ; TODO: Fix tests (paths, graphic toolkit, octave modules).
       #:phases
       (modify-phases %standard-phases
         (add-before 'check 'set-test-environment
           (lambda _
             (setenv "HOME" "/tmp")
             #t)))))
    (synopsis "Speech codec")
    (description
     "Codec 2 is a speech codec designed for communications quality speech
between 700 and 3200 bit/s.  The main application is low bandwidth HF/VHF
digital radio.")
    (home-page "https://www.rowetel.com/?page_id=452")
    (license license:lgpl2.1)))

(define-public ableton-link
  (package
    (name "ableton-link")
    (version "3.0.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/Ableton/link")
                    (commit (string-append "Link-" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0262vm0v7hmqjhqx5xikh529p3c065p1yld6ymaiz74yq1dnnjir"))
              (modules '((guix build utils)))
              (patches
               (search-patches "ableton-link-system-libraries-debian.patch"))
              (snippet
               '(begin
                  ;; Tests assume that CMake's "build" directory is a
                  ;; sub-directory of the source tree, so we fix it.
                  (substitute* "ci/run-tests.py"
                    (("root_dir,") "root_dir, os.pardir,"))
                  ;; Unbundle dependencies.
                  (delete-file-recursively "third_party")
                  (delete-file-recursively "modules")
                  #t))))
    (build-system cmake-build-system)
    (native-inputs
     `(("catch" ,catch-framework)
       ("python" ,python)       ;for running tests
       ("portaudio" ,portaudio) ;for portaudio examples
       ("qtbase" ,qtbase)       ;for Qt examples
       ("qtdeclarative" ,qtdeclarative)
       ("qttools" ,qttools)))
    (inputs
     `(("jack" ,jack-1)                       ;for JACK examples
       ("qtquickcontrols" ,qtquickcontrols))) ;for Qt examples
    (propagated-inputs
     ;; This is because include/ableton/platforms/asio/AsioWrapper.hpp
     ;; contains '#include <asio.hpp>'.
     `(("asio" ,asio)))
    (arguments
     `(#:configure-flags
       '("-DLINK_BUILD_QT_EXAMPLES=ON"
         "-DLINK_BUILD_JACK=ON")
       #:phases
       (modify-phases %standard-phases
         (replace 'check
           (lambda* (#:key inputs #:allow-other-keys)
             (let* ((python (string-append (assoc-ref inputs "python")
                                          "/bin/python3"))
                   (run-tests (string-append "../ableton-link-"
                                             ,version
                                             "-checkout/ci/run-tests.py")))
               (invoke python run-tests "--target" "LinkCoreTest")
               (invoke python run-tests "--target" "LinkDiscoveryTest"))))
         (add-before 'install 'patch-cmake
           (lambda* (#:key inputs #:allow-other-keys)
             (let* ((source (string-append "../ableton-link-"
                                                ,version
                                                "-checkout/")))
               (substitute* (string-append source
                                           "cmake_include/AsioStandaloneConfig.cmake")
                 (((string-append "\\$\\{CMAKE_CURRENT_LIST_DIR\\}/\\.\\./"
                                  "modules/asio-standalone/asio/include"))
                  (string-append (assoc-ref inputs "asio")
                                 "/include")))
               (substitute* (string-append source "AbletonLinkConfig.cmake")
                 (("\\$\\{CMAKE_CURRENT_LIST_DIR\\}/include")
                  "${CMAKE_CURRENT_LIST_DIR}/../../../include")
                 (("\\$\\{CMAKE_CURRENT_LIST_DIR\\}/include/ableton/Link\\.hpp")
                  "${CMAKE_CURRENT_LIST_DIR}/../../../include/ableton/Link.hpp"))
               #t)))
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (lib-cmake (string-append out "/lib/cmake/ableton-link"))
                    (source (string-append "../ableton-link-" ,version "-checkout")))
               (for-each (lambda (test-file)
                           (delete-file test-file))
                         '("bin/LinkDiscoveryTest" "bin/LinkCoreTest"))
               (copy-recursively "bin" bin)
               (copy-recursively (string-append source "/include/ableton")
                                 (string-append out "/include/ableton"))
               (install-file (string-append source "/AbletonLinkConfig.cmake")
                             lib-cmake)
               (install-file (string-append source
                                            "/cmake_include/AsioStandaloneConfig.cmake")
                             (string-append lib-cmake "/cmake_include"))
               #t))))))
    (home-page "https://github.com/Ableton/link")
    (synopsis "Synchronize musical beat, tempo, and phase across multiple applications")
    (description
     "Ableton Link is a C++ library that synchronizes musical beat, tempo, and phase
across multiple applications running on one or more devices.  Applications on devices
connected to a local network discover each other automatically and form a musical
session in which each participant can perform independently: anyone can start or stop
while still staying in time.")
    (license license:gpl2+)))

debug log:

solving 9e1dac3e6a ...
found 9e1dac3e6a in https://yhetil.org/guix/679bd4b51b68c5d83257618ef9855e7d54a71a94.camel@zrythm.org/
found 631b935f5e in https://git.savannah.gnu.org/cgit/guix.git
preparing index
index prepared:
100644 631b935f5e0b0580d6e09b3b9263ec0b6370fae9	gnu/packages/audio.scm

applying [1/1] https://yhetil.org/guix/679bd4b51b68c5d83257618ef9855e7d54a71a94.camel@zrythm.org/
diff --git a/gnu/packages/audio.scm b/gnu/packages/audio.scm
index 631b935f5e..9e1dac3e6a 100644

Checking patch gnu/packages/audio.scm...
Applied patch gnu/packages/audio.scm cleanly.

index at:
100644 9e1dac3e6ad955f24cb1dda42e50584cfea28924	gnu/packages/audio.scm

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/guix.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.