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(ALSA QSA) Merge latest patches by CatalystG

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This commit is contained in:
twinaphex 2013-07-06 22:45:10 +02:00
parent 73016a2752
commit 7c74542c58
1 changed files with 24 additions and 14 deletions
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38
blackberry-qnx/alsa_qsa.c
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@ -69,15 +69,16 @@ static void *alsa_qsa_init(const char *device, unsigned rate, unsigned latency)
params.format.interleave = 1;
params.format.format = SND_PCM_SFMT_S16_LE;
params.format.rate = rate;
params.format.rate = rate;
params.format.voices = 2;
params.start_mode = SND_PCM_START_DATA;
params.stop_mode = SND_PCM_STOP_ROLLOVER;
params.start_mode = SND_PCM_START_FULL;
params.stop_mode = SND_PCM_STOP_STOP;
params.buf.block.frag_size = 4096;
params.buf.block.frags_max = (latency * rate * 4) / (1000 * (1 << 10)) - 1;
params.buf.block.frag_size = 1024;
params.buf.block.frags_min = 1;
params.buf.block.frags_max = 19;
if ((err = snd_pcm_plugin_params(alsa->pcm, &params)) < 0)
{
@ -93,7 +94,7 @@ static void *alsa_qsa_init(const char *device, unsigned rate, unsigned latency)
goto error;
}
alsa->buffer_size = setup.buf.block.frag_size * 19; /* is this in bytes? */
alsa->buffer_size = setup.buf.block.frag_size * (setup.buf.block.frags_max+1); /* is this in bytes? */
RARCH_LOG("[ALSA QSA]: buffer size: %d bytes (?)\n", alsa->buffer_size);
if ((err = snd_pcm_plugin_prepare(alsa->pcm, SND_PCM_CHANNEL_PLAYBACK)) < 0)
@ -114,21 +115,28 @@ error:
return (void*)-1;
}
static ssize_t alsa_qsa_write(void *data, const void *buf, size_t size)
{
int err;
int written, err;
alsa_t *alsa = (alsa_t*)data;
snd_pcm_channel_status_t status = {0};
if ((err = snd_pcm_plugin_status(alsa->pcm, &status)) < 0)
RARCH_ERR("[ALSA QSA]: Error reading status: %s\n", snd_strerror(err));
written = snd_pcm_plugin_write(alsa->pcm, buf, size);
if ((err = snd_pcm_plugin_write(alsa->pcm, buf, size)) < 0)
RARCH_ERR("[ALSA QSA]: Error writing PCM: %s\n", snd_strerror(err));
if (written < size)
{
status.channel = SND_PCM_CHANNEL_PLAYBACK;
return size;
}
if ((err = snd_pcm_plugin_status(alsa->pcm, &status)) < 0)
RARCH_ERR("[ALSA QSA]: Error reading status: %s\n", snd_strerror(err));
if (status.status == SND_PCM_STATUS_UNDERRUN)
if (snd_pcm_plugin_prepare(alsa->pcm, SND_PCM_CHANNEL_PLAYBACK) < 0)
RARCH_ERR("[ALSA QSA]: Underrun - playback channel prepare error.\n");
}
return size;
}
static bool alsa_qsa_stop(void *data)
{
@ -221,6 +229,7 @@ static size_t alsa_qsa_write_avail(void *data)
alsa_t *alsa = (alsa_t*)data;
snd_pcm_channel_status_t status = {0};
status.channel = SND_PCM_CHANNEL_PLAYBACK;
snd_pcm_plugin_status(alsa->pcm, &status);
return status.free;
@ -244,3 +253,4 @@ const audio_driver_t audio_alsa = {
alsa_qsa_write_avail,
alsa_qsa_buffer_size,
};