virtual HRESULT VideoInputFrameArrived(IDeckLinkVideoInputFrame *in,
IDeckLinkAudioInputPacket *audio_in) {
RawFrame *out;
AudioPacket *audio_out;
void *data;
uint8_t *bytes;
size_t i, spitch, h;
if (in != NULL) {
if (in->GetFlags( ) & bmdFrameHasNoInputSource) {
fprintf(stderr, "DeckLink input: no signal\n");
} else {
out = new RawFrame(in->GetWidth(), in->GetHeight(), pf);
out->set_field_dominance(dominance);
spitch = in->GetRowBytes( );
h = in->GetHeight( );
in->GetBytes(&data);
bytes = (uint8_t *) data;
for (i = 0; i < h; i++) {
memcpy(out->scanline(i), bytes, out->pitch( ));
bytes += spitch;
}
if (out_pipe.can_put( )) {
out_pipe.put(out);
} else {
fprintf(stderr, "DeckLink: dropping input frame on floor\n");
delete out;
}
}
}
if (audio_in != NULL && audio_pipe != NULL) {
audio_out = new AudioPacket(audio_rate, n_channels, 2,
audio_in->GetSampleFrameCount( ));
if (audio_in->GetBytes(&data) != S_OK) {
throw std::runtime_error(
"DeckLink audio input: GetBytes failed"
);
}
memcpy(audio_out->data( ), data, audio_out->size( ));
audio_pipe->put(audio_out);
}
return S_OK;
}
virtual HRESULT VideoInputFrameArrived(IDeckLinkVideoInputFrame *in,
IDeckLinkAudioInputPacket *audio_in) {
RawFrame *out;
IOAudioPacket *audio_out;
void *data;
if (in == NULL && audio_in == NULL) {
fprintf(stderr, "VideoInputFrameArrived got nothing??\n");
}
/* Process video frame if available. */
if (in != NULL) {
if (in->GetFlags( ) & bmdFrameHasNoInputSource) {
if (!signal_lost) {
fprintf(stderr, "DeckLink input: signal lost\n");
signal_lost = true;
}
} else {
if (signal_lost) {
fprintf(stderr, "DeckLink input: signal re-acquired\n");
signal_lost = false;
}
}
/*
* we can't actually tell the card to just not send video,
* so if video is disabled, we just ignore the video frames...
*/
if (enable_video) {
out = create_raw_frame_from_decklink(in, pf, rotate);
out->set_field_dominance(dominance);
if (out_pipe.can_put( ) && started) {
if (enable_video) {
out_pipe.put(out);
avsync++;
}
} else {
fprintf(stderr, "DeckLink: dropping input frame\n");
drop_audio++;
delete out;
}
}
}
/* Process audio, if available. */
if (audio_in != NULL && audio_pipe != NULL) {
audio_out = new IOAudioPacket(
audio_in->GetSampleFrameCount( ), n_channels
);
if (audio_in->GetBytes(&data) != S_OK) {
throw std::runtime_error(
"DeckLink audio input: GetBytes failed"
);
}
memcpy(audio_out->data( ), data, audio_out->size_bytes( ));
if (drop_audio > 0) {
fprintf(stderr, "DeckLink: dropping some audio to get back in sync\n");
delete audio_out;
drop_audio--;
} else if (audio_pipe->can_put( ) && started) {
audio_pipe->put(audio_out);
avsync--;
} else {
fprintf(stderr, "DeckLink: dropping input AudioPacket\n");
delete audio_out;
}
}
if (
(avsync > 10 || avsync < -10)
&& audio_pipe != NULL
&& enable_video
) {
fprintf(stderr, "DeckLink warning: avsync drift = %d\n", avsync);
}
return S_OK;
}