From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leo Famulari <leo@famulari.name>
Subject: Re: [PATCH 0/2] vdpau and vdpauinfo
Date: Mon, 28 Dec 2015 21:40:46 -0500
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To: Andreas Enge <andreas@enge.fr>
Cc: guix-devel@gnu.org

On Mon, Dec 28, 2015 at 07:04:11PM -0500, Leo Famulari wrote:
> On Tue, Dec 29, 2015 at 12:01:02AM +0100, Andreas Enge wrote:
> > > I added libvdpau as a native-input to each and they build, but I don't
> > > know how to test if the compilation is using libvdpau and using it
> > > correctly.
> > 
> > You could search for it in the build log, in particular during the configure
> > phase. And you could run "ldd" on the resulting binary and check whether
> > the libraries appear.
> 
> Okay, I'll try that.

I added libvdpau as an input to mpv, mplayer, and vlc. Here are the
results.

It seems to have worked for mpv, with ldd reporting a link to the VDPAU
library in the store.

It also seems to work for vlc, although it appears as a plugin in vlc's
store directory rather than a dynamic link.

The mplayer build while compiling the "mencoder" output like this:
libmpcodecs/vd_ffmpeg.o: In function `set_format_params':
vd_ffmpeg.c:(.text+0x601): undefined reference to
`av_alloc_vdpaucontext'
libmpcodecs/vd_ffmpeg.o: In function `update_configuration.isra.2':
vd_ffmpeg.c:(.text+0xcf9): undefined reference to
`av_alloc_vdpaucontext'
collect2: error: ld returned 1 exit status 
Makefile:750: recipe for target 'mencoder' failed
make: *** [mencoder] Error 1
make: *** Waiting for unfinished jobs....
libmpcodecs/vd_ffmpeg.o: In function `set_format_params':
vd_ffmpeg.c:(.text+0x601): undefined reference to
`av_alloc_vdpaucontext'
libmpcodecs/vd_ffmpeg.o: In function `update_configuration.isra.2':
vd_ffmpeg.c:(.text+0xcf9): undefined reference to
`av_alloc_vdpaucontext'
collect2: error: ld returned 1 exit status 
Makefile:750: recipe for target 'mplayer' failed
make: *** [mplayer] Error 1
phase `build' failed after 32.3 seconds

I can't truly test mpv or vlc because I don't have any hardware that
supports VDPAU. I guess the error message I read a few days wasn't
relevant.