+void AssetVIcon::load_audio()
+{
+ MWindow *mwindow = picon->mwindow;
+ Asset *asset = (Asset *)picon->indexable;
+ File *file = mwindow->audio_cache->check_out(asset, mwindow->edl, 1);
+ int channels = asset->get_audio_channels();
+ if( channels > 2 ) channels = 2;
+ int sample_rate = asset->get_sample_rate();
+ int bfrsz = sample_rate;
+ Samples samples(bfrsz);
+ double time_scale = (double)sample_rate / VICON_SAMPLE_RATE;
+ vicon_audio_t *audio_data = (vicon_audio_t *)this->audio_data;
+ static const int mx = (1<<(8*sizeof(*audio_data)-1)) - 1;
+ double sample_scale = (double)mx / channels;
+ int audio_pos = 0, audio_len = audio_size/sizeof(vicon_audio_t);
+ while( audio_pos < audio_len ) {
+ int64_t pos = audio_pos * time_scale;
+ for( int ch=0; ch<channels; ++ch ) {
+ file->set_channel(ch);
+ file->set_audio_position(pos);
+ file->read_samples(&samples, bfrsz);
+ double *data = samples.get_data();
+ for( int64_t k=audio_pos; k<audio_len; ++k ) {
+ int i = k * time_scale - pos;
+ if( i >= bfrsz ) break;
+ int v = audio_data[k] + data[i] * sample_scale;
+ audio_data[k] = CLIP(v, -mx,mx);
+ }
+ }
+ audio_pos = (pos + bfrsz) / time_scale;
+ }
+ mwindow->audio_cache->check_in(asset);
+}
+
+
+AssetVIconAudio::AssetVIconAudio(AWindowGUI *gui)
+ : Thread(1, 0, 0)
+{
+ this->gui = gui;
+ audio = new AudioDevice(gui->mwindow);
+ interrupted = 0;
+ vicon = 0;
+}
+AssetVIconAudio::~AssetVIconAudio()
+{
+ delete audio;
+}
+
+void AssetVIconAudio::run()
+{
+ int channels = 2;
+ int64_t bfrsz = VICON_SAMPLE_RATE;
+ MWindow *mwindow = gui->mwindow;
+ EDL *edl = mwindow->edl;
+ EDLSession *session = edl->session;
+ AudioOutConfig *aconfig = session->playback_config->aconfig;
+ audio->open_output(aconfig, VICON_SAMPLE_RATE, bfrsz, channels, 0);
+ audio->start_playback();
+ double out0[bfrsz], out1[bfrsz], *out[2] = { out0, out1 };
+ vicon_audio_t *audio_data = (vicon_audio_t *)vicon->audio_data;
+ static const int mx = (1<<(8*sizeof(*audio_data)-1)) - 1;
+
+ int audio_len = vicon->audio_size/sizeof(vicon_audio_t);
+ while( !interrupted ) {
+ int len = audio_len - audio_pos;
+ if( len <= 0 ) break;
+ if( len > bfrsz ) len = bfrsz;
+ int k = audio_pos;
+ for( int i=0; i<len; ++i,++k )
+ out0[i] = out1[i] = (double)audio_data[k] / mx;
+ audio_pos = k;
+ audio->write_buffer(out, channels, len);
+ }
+
+ if( !interrupted )
+ audio->set_last_buffer();
+ audio->stop_audio(interrupted ? 0 : 1);
+ audio->close_all();
+}
+
+void AssetVIconAudio::start(AssetVIcon *vicon)
+{
+ if( running() ) return;
+ interrupted = 0;
+ audio_pos = 0;
+ this->vicon = vicon;
+ Thread::start();
+}
+
+void AssetVIconAudio::stop(int wait)
+{
+ if( running() && !interrupted ) {
+ interrupted = 1;
+ audio->stop_audio(wait);
+ }
+ Thread::join();
+ if( vicon ) {
+ vicon->playing_audio = 0;
+ vicon = 0;
+ }
+}
+
+void AssetVIcon::start_audio()
+{
+ picon->gui->vicon_audio->stop(0);
+ playing_audio = 1;
+ picon->gui->vicon_audio->start(this);
+}
+
+void AssetVIcon::stop_audio()
+{
+ picon->gui->vicon_audio->stop(0);
+ playing_audio = 0;
+}
+