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more compatibility with other sound systems

This commit is contained in:
Adam D. Ruppe 2019-10-19 09:09:50 -04:00
parent b51bc11c66
commit 29a9c163c5
1 changed files with 14 additions and 7 deletions
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21
simpleaudio.d
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@ -1161,13 +1161,15 @@ snd_pcm_t* openAlsaPcm(snd_pcm_stream_t direction) {
scope(failure)
snd_pcm_close(handle);
if (auto err = snd_pcm_hw_params_malloc(&hwParams))
throw new AlsaException("params malloc", err);
scope(exit)
snd_pcm_hw_params_free(hwParams);
if (auto err = snd_pcm_hw_params_any(handle, hwParams))
throw new AlsaException("params init", err);
// can actually survive a failure here, we will just move forward
{} // throw new AlsaException("params init", err);
if (auto err = snd_pcm_hw_params_set_access(handle, hwParams, snd_pcm_access_t.SND_PCM_ACCESS_RW_INTERLEAVED))
throw new AlsaException("params access", err);
@ -1185,13 +1187,17 @@ snd_pcm_t* openAlsaPcm(snd_pcm_stream_t direction) {
if (auto err = snd_pcm_hw_params_set_channels(handle, hwParams, 2))
throw new AlsaException("params channels", err);
///+
if(snd_pcm_hw_params_set_periods(handle, hwParams, 2, 0) < 0)
throw new AlsaException("periods", -1 /* FIXME */);
uint periods = 2;
{
auto err = snd_pcm_hw_params_set_periods_near(handle, hwParams, &periods, 0);
if(err < 0)
throw new AlsaException("periods", err);
snd_pcm_uframes_t sz = (BUFFER_SIZE_FRAMES * 2 /* periods*/);
if(snd_pcm_hw_params_set_buffer_size_near(handle, hwParams, &sz) < 0)
throw new AlsaException("buffer size", -1 /* FIXME */);
snd_pcm_uframes_t sz = (BUFFER_SIZE_FRAMES * periods);
err = snd_pcm_hw_params_set_buffer_size_near(handle, hwParams, &sz);
if(err < 0)
throw new AlsaException("buffer size", err);
}
if (auto err = snd_pcm_hw_params(handle, hwParams))
throw new AlsaException("params install", err);
@ -1376,6 +1382,7 @@ extern(C):
int snd_pcm_prepare(snd_pcm_t*);
int snd_pcm_hw_params(snd_pcm_t*, snd_pcm_hw_params_t*);
int snd_pcm_hw_params_set_periods(snd_pcm_t*, snd_pcm_hw_params_t*, uint, int);
int snd_pcm_hw_params_set_periods_near(snd_pcm_t*, snd_pcm_hw_params_t*, uint*, int);
int snd_pcm_hw_params_set_buffer_size(snd_pcm_t*, snd_pcm_hw_params_t*, snd_pcm_uframes_t);
int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t*, snd_pcm_hw_params_t*, snd_pcm_uframes_t*);
int snd_pcm_hw_params_set_channels(snd_pcm_t*, snd_pcm_hw_params_t*, uint);