static GF_Err gf_ar_setup_output_format(GF_AudioRenderer *ar)
{
GF_Err e;
u32 freq, nb_bits, nb_chan, ch_cfg;
u32 in_ch, in_cfg, in_bps, in_freq;
gf_mixer_get_config(ar->mixer, &freq, &nb_chan, &nb_bits, &ch_cfg);
/*user disabled multichannel audio*/
if (ar->disable_multichannel && (nb_chan>2) ) nb_chan = 2;
in_ch = nb_chan;
in_cfg = ch_cfg;
in_bps = nb_bits;
in_freq = freq;
if (ar->filter_chain.filters) {
u32 osr, obps, och, ocfg;
e = gf_afc_setup(&ar->filter_chain, nb_bits, freq, nb_chan, ch_cfg, &och, &ocfg);
osr = freq;
obps = nb_bits;
nb_chan = och;
/*try to reconfigure audio output*/
if (!e)
e = ar->audio_out->ConfigureOutput(ar->audio_out, &osr, &och, &obps, ocfg);
/*output module cannot support filter output, disable it ...*/
if (e || (osr != freq) || (och != nb_chan) || (obps != nb_bits)) {
nb_bits = in_bps;
freq = in_freq;
nb_chan = in_ch;
ar->filter_chain.enable_filters = GF_FALSE;
e = ar->audio_out->ConfigureOutput(ar->audio_out, &freq, &nb_chan, &nb_bits, ch_cfg);
}
} else {
e = ar->audio_out->ConfigureOutput(ar->audio_out, &freq, &nb_chan, &nb_bits, ch_cfg);
}
if (e) {
GF_LOG(GF_LOG_ERROR, GF_LOG_MMIO, ("[AudioRender] reconfigure error %d\n", e));
if (nb_chan>2) {
nb_chan=2;
in_ch=2;
ch_cfg=0;
e = ar->audio_out->ConfigureOutput(ar->audio_out, &freq, &nb_chan, &nb_bits, ch_cfg);
}
if (e) return e;
}
gf_mixer_set_config(ar->mixer, freq, nb_chan, nb_bits, in_cfg);
ar->audio_delay = ar->audio_out->GetAudioDelay(ar->audio_out);
ar->audio_out->SetVolume(ar->audio_out, ar->volume);
ar->audio_out->SetPan(ar->audio_out, ar->pan);
ar->time_at_last_config = ar->current_time;
ar->bytes_requested = 0;
ar->bytes_per_second = freq * nb_chan * nb_bits / 8;
if (ar->audio_listeners) {
u32 k=0;
GF_AudioListener *l;
while ((l = (GF_AudioListener*)gf_list_enum(ar->audio_listeners, &k))) {
l->on_audio_reconfig(l->udta, in_freq, in_bps, in_ch, in_cfg);
}
}
return GF_OK;
}
