diff options
Diffstat (limited to 'src/audioOutputs')
| -rw-r--r-- | src/audioOutputs/audioOutput_alsa.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/src/audioOutputs/audioOutput_alsa.c b/src/audioOutputs/audioOutput_alsa.c index 9cc15c842..021c5af48 100644 --- a/src/audioOutputs/audioOutput_alsa.c +++ b/src/audioOutputs/audioOutput_alsa.c @@ -119,6 +119,7 @@ static int alsa_openDevice(AudioOutput * audioOutput) unsigned int alsa_buffer_time = MPD_ALSA_BUFFER_TIME; unsigned int alsa_period_time = MPD_ALSA_PERIOD_TIME; int err; + char * cmd = NULL; switch(audioFormat->bits) { case 8: @@ -146,12 +147,14 @@ static int alsa_openDevice(AudioOutput * audioOutput) goto error; } + cmd = "snd_pcm_nonblock"; err = snd_pcm_nonblock(ad->pcmHandle, 0); if(err < 0) goto error; /* configure HW params */ snd_pcm_hw_params_alloca(&hwparams); + cmd = "snd_pcm_hw_params_any"; err = snd_pcm_hw_params_any(ad->pcmHandle, hwparams); if(err < 0) goto error; @@ -169,6 +172,7 @@ static int alsa_openDevice(AudioOutput * audioOutput) } if(!ad->useMmap) { + cmd = "snd_pcm_hw_params_set_access"; err = snd_pcm_hw_params_set_access(ad->pcmHandle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED); if(err < 0) goto error; @@ -202,20 +206,25 @@ static int alsa_openDevice(AudioOutput * audioOutput) } audioFormat->sampleRate = sampleRate; + cmd = "snd_pcm_hw_params_set_buffer_time_near"; err = snd_pcm_hw_params_set_buffer_time_near(ad->pcmHandle, hwparams, &alsa_buffer_time, 0); if(err < 0) goto error; + cmd = "snd_pcm_hw_params_set_period_time_near"; err = snd_pcm_hw_params_set_period_time_near(ad->pcmHandle, hwparams, &alsa_period_time, 0); if(err < 0) goto error; + cmd = "snd_pcm_hw_params"; err = snd_pcm_hw_params(ad->pcmHandle, hwparams); if(err < 0) goto error; + cmd = "snd_pcm_hw_params_get_buffer_size"; err = snd_pcm_hw_params_get_buffer_size(hwparams, &alsa_buffer_size); if(err < 0) goto error; + cmd = "snd_pcm_hw_params_get_period_size"; err = snd_pcm_hw_params_get_period_size(hwparams, &alsa_period_size, 0); if(err < 0) goto error; @@ -224,12 +233,26 @@ static int alsa_openDevice(AudioOutput * audioOutput) /* configure SW params */ snd_pcm_sw_params_alloca(&swparams); - snd_pcm_sw_params_current(ad->pcmHandle, swparams); + cmd = "snd_pcm_sw_params_current"; + err = snd_pcm_sw_params_current(ad->pcmHandle, swparams); + if(err < 0) goto error; + + cmd = "snd_pcm_sw_params_set_start_threshold"; err = snd_pcm_sw_params_set_start_threshold(ad->pcmHandle, swparams, alsa_buffer_size - alsa_period_size); if(err < 0) goto error; + cmd = "snd_pcm_sw_params_set_avail_min"; + err = snd_pcm_sw_params_set_avail_min(ad->pcmHandle, swparams, + alsa_period_size); + if(err < 0) goto error; + + cmd = "snd_pcm_sw_params_set_xfer_align"; + err = snd_pcm_sw_params_set_xfer_align(ad->pcmHandle, swparams, 1); + if(err < 0) goto error; + + cmd = "snd_pcm_sw_params"; err = snd_pcm_sw_params(ad->pcmHandle, swparams); if(err < 0) goto error; @@ -243,8 +266,14 @@ static int alsa_openDevice(AudioOutput * audioOutput) return 0; error: - ERROR("Error opening alsa device \"%s\": %s\n", ad->device, - snd_strerror(-err)); + if(cmd) { + ERROR("Error opening alsa device \"%s\" (%s): %s\n", + ad->device, cmd, snd_strerror(-err)); + } + else { + ERROR("Error opening alsa device \"%s\": %s\n", ad->device, + snd_strerror(-err)); + } fail: if(ad->pcmHandle) snd_pcm_close(ad->pcmHandle); ad->pcmHandle = NULL; |