From: Alexander Jahn <ajahn@xxxxxxxxxxxxxx> This issue depends on system load - if the process using dshare is scheduled fast enough, then there is no noise. A delay of e.g >~2ms produces hearable noise. Reproduction with instrumented aplay(sleep every 100th period for a given time): During the sleep time of 2000000us (2s) the hardware plays old samples in a loop before xrun is detected and recovered after the sleep. This is resolved by placing it in silence, in case of dshare plugin. Signed-off-by: Alexander Jahn <ajahn@xxxxxxxxxxxxxx> Signed-off-by: Andreas Pape <apape@xxxxxxxxxxxxxx> diff --git a/src/pcm/pcm_direct.c b/src/pcm/pcm_direct.c index 4234d66..779845c 100644 --- a/src/pcm/pcm_direct.c +++ b/src/pcm/pcm_direct.c @@ -1240,7 +1240,7 @@ int snd_pcm_direct_initialize_slave(snd_pcm_direct_t *dmix, snd_pcm_t *spcm, str return ret; } - if (dmix->type != SND_PCM_TYPE_DMIX) + if ((dmix->type != SND_PCM_TYPE_DMIX)&&(dmix->type != SND_PCM_TYPE_DSHARE)) goto __skip_silencing; ret = snd_pcm_sw_params_set_silence_threshold(spcm, &sw_params, 0); -- 1.7.9.5 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
