static u32 gf_ar_fill_output(void *ptr, char *buffer, u32 buffer_size)
{
u32 written;
GF_AudioRenderer *ar = (GF_AudioRenderer *) ptr;
if (!ar->need_reconfig) {
u32 delay_ms = ar->disable_resync ? 0 : ar->audio_delay;
if (ar->filter_chain.enable_filters) {
char *ptr = buffer;
u32 res = buffer_size;
written = 0;
delay_ms += ar->filter_chain.delay_ms;
while (buffer_size) {
u32 to_copy;
if (!ar->nb_used) {
u32 nb_bytes;
/*fill input block*/
nb_bytes = gf_mixer_get_output(ar->mixer, ar->filter_chain.tmp_block1, ar->filter_chain.min_block_size, delay_ms);
if (!nb_bytes)
return written;
/*delay used to check for late frames - we only use it on the first call to gf_mixer_get_output()*/
delay_ms = 0;
ar->nb_filled = gf_afc_process(&ar->filter_chain, nb_bytes);
if (!ar->nb_filled) continue;
}
to_copy = ar->nb_filled - ar->nb_used;
if (to_copy>buffer_size) to_copy = buffer_size;
memcpy(ptr, ar->filter_chain.tmp_block1 + ar->nb_used, to_copy);
ptr += to_copy;
buffer_size -= to_copy;
written += to_copy;
ar->nb_used += to_copy;
if (ar->nb_used==ar->nb_filled) ar->nb_used = 0;
}
assert(res==written);
} else {
written = gf_mixer_get_output(ar->mixer, buffer, buffer_size, delay_ms);
}
if (ar->audio_listeners) {
u32 k=0;
GF_AudioListener *l;
while ((l = gf_list_enum(ar->audio_listeners, &k))) {
l->on_audio_frame(l->udta, buffer, written, gf_sc_ar_get_clock(ar), delay_ms);
}
}
return written;
}
return 0;
}
static u32 gf_ar_fill_output(void *ptr, char *buffer, u32 buffer_size)
{
u32 written;
GF_AudioRenderer *ar = (GF_AudioRenderer *) ptr;
if (!ar->need_reconfig) {
u32 delay_ms = ar->disable_resync ? 0 : ar->audio_delay;
if (ar->Frozen) {
memset(buffer, 0, buffer_size);
return buffer_size;
}
gf_mixer_lock(ar->mixer, GF_TRUE);
if (ar->filter_chain.enable_filters) {
char *ptr = buffer;
written = 0;
delay_ms += ar->filter_chain.delay_ms;
while (buffer_size) {
u32 to_copy;
if (!ar->nb_used) {
u32 nb_bytes;
/*fill input block*/
nb_bytes = gf_mixer_get_output(ar->mixer, ar->filter_chain.tmp_block1, ar->filter_chain.min_block_size, delay_ms);
if (!nb_bytes)
return written;
/*delay used to check for late frames - we only use it on the first call to gf_mixer_get_output()*/
delay_ms = 0;
ar->nb_filled = gf_afc_process(&ar->filter_chain, nb_bytes);
if (!ar->nb_filled) continue;
}
to_copy = ar->nb_filled - ar->nb_used;
if (to_copy>buffer_size) to_copy = buffer_size;
memcpy(ptr, ar->filter_chain.tmp_block1 + ar->nb_used, to_copy);
ptr += to_copy;
buffer_size -= to_copy;
written += to_copy;
ar->nb_used += to_copy;
if (ar->nb_used==ar->nb_filled) ar->nb_used = 0;
}
} else {
written = gf_mixer_get_output(ar->mixer, buffer, buffer_size, delay_ms);
}
gf_mixer_lock(ar->mixer, GF_FALSE);
//done with one sim step, go back in pause
if (ar->step_mode) {
ar->step_mode = GF_FALSE;
gf_ar_pause(ar, GF_TRUE, GF_FALSE, GF_FALSE);
}
if (!ar->need_reconfig) {
if (ar->audio_listeners) {
u32 k=0;
GF_AudioListener *l;
while ((l = (GF_AudioListener*)gf_list_enum(ar->audio_listeners, &k))) {
l->on_audio_frame(l->udta, buffer, buffer_size, gf_sc_ar_get_clock(ar), delay_ms);
}
}
ar->bytes_requested += buffer_size;
ar->current_time = ar->time_at_last_config + (u32) (ar->bytes_requested * 1000 / ar->bytes_per_second);
}
//always return buffer size (eg requested input size to be filled), since the clock is always increased by buffer_size (cf above line)
return buffer_size;
}
return 0;
}
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;
}
