/**
* Start the audio playback and recording
*
* @param a Audio object
*
* @return 0 if success, otherwise errorcode
*/
int audio_start(struct audio *a)
{
int err;
if (!a)
return EINVAL;
err = stream_start(a->strm);
if (err)
return err;
/* Audio filter */
if (!a->filtl.head && !list_isempty(aufilt_list())) {
err = aufilt_setup(a);
if (err)
return err;
}
/* configurable order of play/src start */
if (a->cfg.src_first) {
err |= start_source(&a->tx, a);
err |= start_player(&a->rx, a);
}
else {
err |= start_player(&a->rx, a);
err |= start_source(&a->tx, a);
}
return err;
}
/**
* Setup the audio-filter chain
*
* must be called before auplay/ausrc-alloc
*/
static int aufilt_setup(struct audio *a)
{
struct aufilt_prm encprm, decprm;
struct autx *tx = &a->tx;
struct aurx *rx = &a->rx;
struct le *le;
/* wait until we have both Encoder and Decoder */
if (!tx->ac || !rx->ac)
return 0;
if (!list_isempty(&tx->filtl) || !list_isempty(&rx->filtl))
return 0;
aufilt_param_set(&encprm, tx->ac, tx->ptime);
aufilt_param_set(&decprm, rx->ac, rx->ptime);
/* Audio filters */
for (le = list_head(aufilt_list()); le; le = le->next) {
struct aufilt *af = le->data;
struct aufilt_enc_st *encst = NULL;
struct aufilt_dec_st *decst = NULL;
void *ctx = NULL;
int err = 0;
if (af->encupdh) {
err |= af->encupdh(&encst, &ctx, af, &encprm);
if (err) {
continue;
}
encst->af = af;
list_append(&tx->filtl, &encst->le, encst);
}
if (af->decupdh) {
err |= af->decupdh(&decst, &ctx, af, &decprm);
if (err) {
continue;
}
decst->af = af;
list_append(&rx->filtl, &decst->le, decst);
}
if (err) {
DEBUG_WARNING("audio-filter '%s' update failed (%m)\n", af->name, err);
break;
}
}
return 0;
}
/**
* Setup the audio-filter chain
*
* must be called before auplay/ausrc-alloc
*/
static int aufilt_setup(struct audio *a)
{
struct aufilt_prm encprm, decprm;
struct autx *tx = &a->tx;
struct aurx *rx = &a->rx;
struct le *le;
int err = 0;
aufilt_param_set(&encprm, tx->ac ? tx->ac : rx->ac, tx->ptime);
aufilt_param_set(&decprm, rx->ac ? rx->ac : tx->ac, rx->ptime);
/* Audio filters */
for (le = list_head(aufilt_list()); le; le = le->next) {
struct aufilt *af = le->data;
struct aufilt_st *st = NULL;
err = af->updh(&st, af, &encprm, &decprm);
if (err) {
DEBUG_WARNING("audio-filter '%s' update failed (%m)\n",
af->name, err);
break;
}
st->af = af;
list_append(&a->filtl, &st->le, st);
if (le == list_head(aufilt_list()))
(void)re_printf("audio filters: (dsp)");
(void)re_printf("<--->[%s]", af->name);
if (le == list_tail(aufilt_list()))
(void)re_printf("<--->(codec)\n");
}
return 0;
}
/**
* Load all modules from config file
*
* @return 0 if success, otherwise errorcode
*
* @note conf_configure must be called first
*/
int conf_modules(void)
{
int err;
err = module_init(conf_obj);
if (err) {
warning("conf: configure module parse error (%m)\n", err);
goto out;
}
print_populated("audio codec", list_count(aucodec_list()));
print_populated("audio filter", list_count(aufilt_list()));
#ifdef USE_VIDEO
print_populated("video codec", list_count(vidcodec_list()));
print_populated("video filter", list_count(vidfilt_list()));
#endif
out:
return err;
}
/**
* Start the audio playback and recording
*
* @param a Audio object
*
* @return 0 if success, otherwise errorcode
*/
int audio_start(struct audio *a)
{
int err;
if (!a)
return EINVAL;
/* Audio filter */
if (!list_isempty(aufilt_list())) {
err = aufilt_setup(a);
if (err)
return err;
}
/* configurable order of play/src start */
if (a->cfg.src_first) {
err = start_source(&a->tx, a);
err |= start_player(&a->rx, a);
}
else {
err = start_player(&a->rx, a);
err |= start_source(&a->tx, a);
}
if (err)
return err;
if (a->tx.ac && a->rx.ac) {
if (!a->started) {
info("%H%H",
autx_print_pipeline, &a->tx,
aurx_print_pipeline, &a->rx);
}
a->started = true;
}
return err;
}