void reinit_audio_chain(struct MPContext *mpctx)
{
struct MPOpts *opts = mpctx->opts;
struct track *track = mpctx->current_track[0][STREAM_AUDIO];
struct sh_stream *sh = track ? track->stream : NULL;
if (!sh) {
uninit_player(mpctx, INITIALIZED_AO);
goto no_audio;
}
mp_notify(mpctx, MPV_EVENT_AUDIO_RECONFIG, NULL);
if (!(mpctx->initialized_flags & INITIALIZED_ACODEC)) {
mpctx->initialized_flags |= INITIALIZED_ACODEC;
assert(!mpctx->d_audio);
mpctx->d_audio = talloc_zero(NULL, struct dec_audio);
mpctx->d_audio->log = mp_log_new(mpctx->d_audio, mpctx->log, "!ad");
mpctx->d_audio->global = mpctx->global;
mpctx->d_audio->opts = opts;
mpctx->d_audio->header = sh;
mpctx->d_audio->afilter = af_new(mpctx->global);
mpctx->d_audio->afilter->replaygain_data = sh->audio->replaygain_data;
mpctx->ao_buffer = mp_audio_buffer_create(NULL);
if (!audio_init_best_codec(mpctx->d_audio, opts->audio_decoders))
goto init_error;
reset_audio_state(mpctx);
if (mpctx->ao) {
struct mp_audio fmt;
ao_get_format(mpctx->ao, &fmt);
mp_audio_buffer_reinit(mpctx->ao_buffer, &fmt);
}
}
// Drop audio buffer and reinit it (after format change)
// Returns whether the format was valid at all.
static bool reinit_audio_buffer(struct dec_audio *da)
{
if (!mp_audio_config_valid(&da->decoded)) {
MP_ERR(da, "Audio decoder did not specify audio "
"format, or requested an unsupported configuration!\n");
return false;
}
mp_audio_buffer_reinit(da->decode_buffer, &da->decoded);
return true;
}
// Drop audio buffer and reinit it (after format change)
// Returns whether the format was valid at all.
static bool reinit_audio_buffer(struct dec_audio *da)
{
if (!mp_audio_config_valid(&da->decoded)) {
mp_msg(MSGT_DECAUDIO, MSGL_ERR, "Audio decoder did not specify audio "
"format, or requested an unsupported configuration!\n");
return false;
}
mp_audio_buffer_reinit(da->decode_buffer, &da->decoded);
mp_audio_buffer_preallocate_min(da->decode_buffer, DECODE_BUFFER_SAMPLES);
return true;
}
// Initialization and runtime control
static int control(struct af_instance *af, int cmd, void *arg)
{
af_ac3enc_t *s = af->priv;
static const int default_bit_rate[AC3_MAX_CHANNELS+1] = \
{0, 96000, 192000, 256000, 384000, 448000, 448000};
switch (cmd){
case AF_CONTROL_REINIT: {
struct mp_audio *in = arg;
struct mp_audio orig_in = *in;
if (AF_FORMAT_IS_SPECIAL(in->format) || in->nch < s->cfg_min_channel_num)
return AF_DETACH;
mp_audio_set_format(in, s->in_sampleformat);
if (in->rate != 48000 && in->rate != 44100 && in->rate != 32000)
in->rate = 48000;
af->data->rate = in->rate;
mp_chmap_reorder_to_lavc(&in->channels);
if (in->nch > AC3_MAX_CHANNELS)
mp_audio_set_num_channels(in, AC3_MAX_CHANNELS);
mp_audio_set_format(af->data, AF_FORMAT_AC3_BE);
mp_audio_set_num_channels(af->data, 2);
if (!mp_audio_config_equals(in, &orig_in))
return AF_FALSE;
s->in_samples = AC3_FRAME_SIZE;
if (s->cfg_add_iec61937_header) {
s->out_samples = AC3_FRAME_SIZE;
} else {
s->out_samples = AC3_MAX_CODED_FRAME_SIZE / af->data->sstride;
}
af->mul = s->out_samples / (double)s->in_samples;
mp_audio_buffer_reinit(s->pending, in);
MP_DBG(af, "af_lavcac3enc reinit: %d, %d, %f, %d.\n",
in->nch, in->rate, af->mul, s->in_samples);
int bit_rate = s->bit_rate ? s->bit_rate : default_bit_rate[in->nch];
if (s->lavc_actx->channels != in->nch ||
s->lavc_actx->sample_rate != in->rate ||
s->lavc_actx->bit_rate != bit_rate)
{
avcodec_close(s->lavc_actx);
// Put sample parameters
s->lavc_actx->channels = in->nch;
s->lavc_actx->channel_layout = mp_chmap_to_lavc(&in->channels);
s->lavc_actx->sample_rate = in->rate;
s->lavc_actx->bit_rate = bit_rate;
if (avcodec_open2(s->lavc_actx, s->lavc_acodec, NULL) < 0) {
MP_ERR(af, "Couldn't open codec %s, br=%d.\n", "ac3", bit_rate);
return AF_ERROR;
}
}
if (s->lavc_actx->frame_size != AC3_FRAME_SIZE) {
MP_ERR(af, "lavcac3enc: unexpected ac3 "
"encoder frame size %d\n", s->lavc_actx->frame_size);
return AF_ERROR;
}
return AF_OK;
}
}
return AF_UNKNOWN;
}
// Drop audio buffer and reinit it (after format change)
static void reinit_audio_buffer(struct dec_audio *da)
{
mp_audio_buffer_reinit(da->decode_buffer, &da->decoded);
mp_audio_buffer_preallocate_min(da->decode_buffer, DECODE_BUFFER_SAMPLES);
}