On Fri, 30 Dec 2005, Adam Nielsen wrote:
ALSA lib pcm_ladspa.c:1283:(snd_pcm_ladspa_parse_ioconfig) Unable to find an
audio port (1) for channel 1
aplay: main:547: audio open error: Invalid argument
So what does this mean? It looks like solving this problem will fix the
mono-only LADSPA
ALSA lib pcm_ladspa.c:1283:(snd_pcm_ladspa_parse_ioconfig) Unable to
find an audio port (1) for channel 1
It means that the used LADSPA plugin has no second audio port.
When you say no second audio port is that different to processing a
stereo signal? Because it was my understanding that
On Mon, 2 Jan 2006, Adam Nielsen wrote:
ALSA lib pcm_ladspa.c:1283:(snd_pcm_ladspa_parse_ioconfig) Unable to
find an audio port (1) for channel 1
It means that the used LADSPA plugin has no second audio port.
When you say no second audio port is that different to processing a
stereo
On Mon, 2 Jan 2006, Jaroslav Kysela wrote:
Running speaker-test -c2 -Dplug:test only plays the front right
audio out of both front speakers.
Confirmed. It seems that the problem has nothing with the ALSA LADSPA
plugin code but with the latest mmap code optimizations. I'm still
figuring
The attached patch fixes this bug.
Brilliant! The LADSPA EQ is now in stereo again! Thanks for tracking
this down and fixing it!
Cheers,
Adam.
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Aha, well now I think I might be tracking down why stereo output via
LADSPA isn't working. If I change policy duplicate in the LADSPA PCM
definition to policy none then suddenly ALSA starts paying attention
to all the 'bindings' definitions, and if I do this:
...
input {
bindings {
0 0
