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(ALSA QSA) New implementation based on OpenAL driver - crappy sound 

for 10-20 seconds every minute though
This commit is contained in:
twinaphex 2014-05-25 17:20:45 +02:00
parent 25e56d8db0
commit 6d8035fb08
1 changed files with 65 additions and 35 deletions
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100
blackberry-qnx/alsa_qsa.c
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@ -143,6 +143,58 @@ error:
return (void*)-1;
}
static int check_pcm_status(void *data, int channel_type)
{
alsa_t *alsa = (alsa_t*)data;
snd_pcm_channel_status_t status;
int ret = EOK;
memset(&status, 0, sizeof (status));
status.channel = channel_type;
if ((ret = snd_pcm_plugin_status(alsa->pcm, &status)) == 0)
{
if (status.status == SND_PCM_STATUS_UNSECURE)
{
RARCH_ERR("check_pcm_status got SND_PCM_STATUS_UNSECURE, aborting playback\n");
ret = -EPROTO;
}
else if (status.status == SND_PCM_STATUS_UNDERRUN)
{
if ((ret = snd_pcm_plugin_prepare(alsa->pcm, channel_type)) < 0)
{
RARCH_ERR("Invalid state detected for underrun on snd_pcm_plugin_prepare: %s\n", snd_strerror(ret));
ret = -EPROTO;
}
}
else if (status.status == SND_PCM_STATUS_OVERRUN)
{
if ((ret = snd_pcm_plugin_prepare(alsa->pcm, channel_type)) < 0)
{
RARCH_ERR("Invalid state detected for overrun on snd_pcm_plugin_prepare: %s\n", snd_strerror(ret));
ret = -EPROTO;
}
}
else if (status.status == SND_PCM_STATUS_CHANGE)
{
if ((ret = snd_pcm_plugin_prepare(alsa->pcm, channel_type)) < 0)
{
RARCH_ERR("Invalid state detected for change on snd_pcm_plugin_prepare: %s\n", snd_strerror(ret));
ret = -EPROTO;
}
}
}
else
{
RARCH_ERR("check_pcm_status failed: %s\n", snd_strerror(ret));
if (ret == -ESRCH)
ret = -EBADF;
}
return ret;
}
static ssize_t alsa_qsa_write(void *data, const void *buf, size_t size)
{
int status;
@ -150,50 +202,28 @@ static ssize_t alsa_qsa_write(void *data, const void *buf, size_t size)
snd_pcm_channel_status_t cstatus = {0};
snd_pcm_sframes_t written = 0;
/* Write the audio data, checking for EAGAIN (buffer full) and underrun */
while (size)
{
snd_pcm_sframes_t frames = snd_pcm_plugin_write(alsa->pcm, buf, size);
if (frames == size)
goto increment;
/* Check if samples playback got stuck somewhere in hardware or in */
/* the audio device driver */
if (((errno == EAGAIN)) && (written == 0))
if (frames <= 0)
{
RARCH_ERR("Sample got stuck somewhere in hardware or in audio device driver.\n");
written += frames;
buf += (frames * CHANNELS) * (alsa->has_float ? sizeof(float) : sizeof(int16_t));
return 0;
int ret;
if (frames == -EAGAIN)
continue;
ret = check_pcm_status(alsa, SND_PCM_CHANNEL_PLAYBACK);
if (ret == -EPROTO || ret == -EBADF)
return -1;
}
else
{
if ((errno == EINVAL) || (errno == EIO))
{
cstatus.channel = SND_PCM_CHANNEL_PLAYBACK;
status = snd_pcm_plugin_status(alsa->pcm, &cstatus);
if (status > 0)
return 0;
if ((cstatus.status == SND_PCM_STATUS_UNDERRUN) ||
(cstatus.status == SND_PCM_STATUS_READY))
{
status = snd_pcm_plugin_prepare(alsa->pcm, SND_PCM_CHANNEL_PLAYBACK);
if (status < 0)
return 0;
}
continue;
}
written += frames;
buf += (frames * CHANNELS) * (alsa->has_float ? sizeof(float) : sizeof(int16_t));
size -= frames;
}
return 0;
increment:
written += frames;
buf += (frames * CHANNELS) * (alsa->has_float ? sizeof(float) : sizeof(int16_t));
size -= frames;
}
return written;