static bool resample_audio_output(struct audio_input *input,
struct audio_data *data)
{
bool success = true;
if (input->resampler) {
uint8_t *output[MAX_AV_PLANES];
uint32_t frames;
uint64_t offset;
memset(output, 0, sizeof(output));
success = audio_resampler_resample(input->resampler,
output, &frames, &offset,
(const uint8_t *const *)data->data,
data->frames);
for (size_t i = 0; i < MAX_AV_PLANES; i++)
data->data[i] = output[i];
data->frames = frames;
data->timestamp -= offset;
}
return success;
}
/* resamples/remixes new audio to the designated main audio output format */
static void process_audio(obs_source_t source, const struct source_audio *audio)
{
if (source->sample_info.samples_per_sec != audio->samples_per_sec ||
source->sample_info.format != audio->format ||
source->sample_info.speakers != audio->speakers)
reset_resampler(source, audio);
if (source->audio_failed)
return;
if (source->resampler) {
void *output;
uint32_t frames;
uint64_t offset;
audio_resampler_resample(source->resampler, &output, &frames,
audio->data, audio->frames, &offset);
copy_audio_data(source, output, frames,
audio->timestamp - offset);
} else {
copy_audio_data(source, audio->data, audio->frames,
audio->timestamp);
}
}
/* resamples/remixes new audio to the designated main audio output format */
static void process_audio(obs_source_t source, const struct source_audio *audio)
{
if (source->sample_info.samples_per_sec != audio->samples_per_sec ||
source->sample_info.format != audio->format ||
source->sample_info.speakers != audio->speakers)
reset_resampler(source, audio);
if (source->audio_failed)
return;
if (source->resampler) {
uint8_t *output[MAX_AV_PLANES];
uint32_t frames;
uint64_t offset;
memset(output, 0, sizeof(output));
audio_resampler_resample(source->resampler,
output, &frames, &offset,
audio->data, audio->frames);
copy_audio_data(source, (const uint8_t *const *)output, frames,
audio->timestamp - offset);
} else {
copy_audio_data(source, audio->data, audio->frames,
audio->timestamp);
}
}
static void on_audio_playback(void *param, obs_source_t *source,
const struct audio_data *audio_data, bool muted)
{
struct audio_monitor *monitor = param;
IAudioRenderClient *render = monitor->render;
uint8_t *resample_data[MAX_AV_PLANES];
float vol = source->user_volume;
uint32_t resample_frames;
uint64_t ts_offset;
bool success;
BYTE *output;
if (pthread_mutex_trylock(&monitor->playback_mutex) != 0) {
return;
}
if (os_atomic_load_long(&source->activate_refs) == 0) {
goto unlock;
}
success = audio_resampler_resample(monitor->resampler, resample_data,
&resample_frames, &ts_offset,
(const uint8_t *const *)audio_data->data,
(uint32_t)audio_data->frames);
if (!success) {
goto unlock;
}
UINT32 pad = 0;
monitor->client->lpVtbl->GetCurrentPadding(monitor->client, &pad);
bool decouple_audio =
source->async_unbuffered && source->async_decoupled;
if (monitor->source_has_video && !decouple_audio) {
uint64_t ts = audio_data->timestamp - ts_offset;
if (!process_audio_delay(monitor, (float**)(&resample_data[0]),
&resample_frames, ts, pad)) {
goto unlock;
}
}
HRESULT hr = render->lpVtbl->GetBuffer(render, resample_frames,
&output);
if (FAILED(hr)) {
goto unlock;
}
if (!muted) {
/* apply volume */
if (!close_float(vol, 1.0f, EPSILON)) {
register float *cur = (float*)resample_data[0];
register float *end = cur +
resample_frames * monitor->channels;
while (cur < end)
*(cur++) *= vol;
}
memcpy(output, resample_data[0],
resample_frames * monitor->channels *
sizeof(float));
}
render->lpVtbl->ReleaseBuffer(render, resample_frames,
muted ? AUDCLNT_BUFFERFLAGS_SILENT : 0);
unlock:
pthread_mutex_unlock(&monitor->playback_mutex);
}
