static int
audio_device_attempt_config(session_t *sp, audio_config *config)
{
audio_format *inf, *ouf;
const codec_format_t *incf;
int success;
incf = codec_get_format(config->primary);
assert(incf);
inf = audio_format_dup(&incf->format);
ouf = audio_format_dup(&incf->format);
if (inf->channels != 2 && config->render_3d) {
/* If 3d rendering is enabled we need stereo output
* format.
*/
ouf->channels = 2;
}
success = audio_open(config->device, inf, ouf);
if (success) {
mixer_info_t mi;
uint16_t unit_len;
assert(sp->ms == NULL);
assert(sp->tb == NULL);
assert(sp->cushion == NULL);
audio_non_block(config->device);
/* Initialize read and write components */
sp->meter_period = inf->sample_rate / 15;
unit_len = inf->bytes_per_block * 8 / (inf->bits_per_sample*inf->channels);
tx_create(&sp->tb, sp, (uint16_t)inf->sample_rate, (uint16_t)inf->channels, (uint16_t)unit_len);
cushion_create(&sp->cushion, (uint16_t)inf->sample_rate);
sp->cur_ts = ts_convert(inf->sample_rate, sp->cur_ts);
mi.sample_rate = ouf->sample_rate;
mi.channels = ouf->channels;
mi.buffer_length = 32640;
mix_create(&sp->ms, &mi, sp->cur_ts);
if (zero_buf == NULL) {
zero_buf = (sample*)xmalloc(unit_len * sizeof(sample));
audio_zero(zero_buf, unit_len, DEV_S16);
}
}
audio_format_free(&inf);
audio_format_free(&ouf);
return success;
}
void audio_formats_free(AUDIO_FORMAT* formats, size_t count)
{
size_t index;
if (formats)
{
for (index = 0; index < count; index++)
{
AUDIO_FORMAT* format = &formats[index];
audio_format_free(format);
}
free(formats);
}
}
