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now alsa plugin should work 

git-svn-id: https://svn.musicpd.org/mpd/trunk@3009 09075e82-0dd4-0310-85a5-a0d7c8717e4f
This commit is contained in:
Warren Dukes 2005-03-05 05:45:39 +00:00
parent d1a4bb382f
commit 7f183f687b
1 changed files with 13 additions and 7 deletions
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20
src/audioOutputs/audioOutput_alsa.c
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@ -46,6 +46,7 @@ typedef struct _AlsaData {
snd_pcm_t * pcm_handle;
int mmap;
alsa_writei_t * writei;
int sampleSize;
} AlsaData;
static AlsaData * newAlsaData() {
@ -122,10 +123,10 @@ static int alsa_openDevice(AudioOutput * audioOutput)
goto error;
}
err = snd_pcm_nonblock(ad->pcm_handle, 0);
if(err < 0) goto error;
/*err = snd_pcm_nonblock(ad->pcm_handle, 0);
if(err < 0) goto error;*/
// configure HW params
/* configure HW params */
snd_pcm_hw_params_alloca(&hwparams);
err = snd_pcm_hw_params_any(ad->pcm_handle, hwparams);
@ -148,7 +149,7 @@ static int alsa_openDevice(AudioOutput * audioOutput)
err = snd_pcm_hw_params_set_access(ad->pcm_handle, hwparams,
SND_PCM_ACCESS_RW_INTERLEAVED);
if(err < 0) goto error;
ad->writei = snd_pcm_mmap_writei;
ad->writei = snd_pcm_writei;
}
err = snd_pcm_hw_params_set_format(ad->pcm_handle, hwparams, bitformat);
@ -160,7 +161,7 @@ static int alsa_openDevice(AudioOutput * audioOutput)
}
err = snd_pcm_hw_params_set_channels(ad->pcm_handle, hwparams,
(unsigned int)audioFormat->channels);
audioFormat->channels);
if(err < 0) {
ERROR("Alsa device \"%s\" does not support %i channels: "
"%s\n", ad->device, (int)audioFormat->channels,
@ -193,7 +194,7 @@ static int alsa_openDevice(AudioOutput * audioOutput)
err = snd_pcm_hw_params_get_period_size(hwparams, &alsa_period_size, 0);
if(err < 0) goto error;
// configure SW params
/* configure SW params */
snd_pcm_sw_params_alloca(&swparams);
snd_pcm_sw_params_current(ad->pcm_handle, swparams);
@ -204,6 +205,8 @@ static int alsa_openDevice(AudioOutput * audioOutput)
err = snd_pcm_sw_params(ad->pcm_handle, swparams);
if(err < 0) goto error;
ad->sampleSize = (audioFormat->bits/8)*audioFormat->channels;
audioOutput->open = 1;
return 0;
@ -213,6 +216,7 @@ error:
snd_strerror(-err));
fail:
if(ad->pcm_handle) snd_pcm_close(ad->pcm_handle);
ad->pcm_handle = NULL;
audioOutput->open = 0;
return -1;
}
@ -245,6 +249,8 @@ static int alsa_playAudio(AudioOutput * audioOutput, char * playChunk,
AlsaData * ad = audioOutput->data;
int ret;
size /= ad->sampleSize;
while (size > 0) {
ret = ad->writei(ad->pcm_handle, playChunk, size);
@ -257,7 +263,7 @@ static int alsa_playAudio(AudioOutput * audioOutput, char * playChunk,
alsa_closeDevice(audioOutput);
return -1;
}
playChunk += ret;
playChunk += ret * ad->sampleSize;
size -= ret;
}