void createFrame()
{
m_videoFrame = 0;
// Generate a DeckLink video frame
if ( S_OK != m_deckLinkOutput->CreateVideoFrame( m_width, m_height,
m_width * 2, bmdFormat8BitYUV, bmdFrameFlagDefault, &m_videoFrame ) )
{
mlt_log_verbose( &m_consumer, "Failed to create video frame\n" );
stop();
return;
}
// Make the first line black for field order correction.
uint8_t *buffer = 0;
if ( S_OK == m_videoFrame->GetBytes( (void**) &buffer ) && buffer )
{
for ( int i = 0; i < m_width; i++ )
{
*buffer++ = 128;
*buffer++ = 16;
}
}
mlt_log_debug( &m_consumer, "created video frame\n" );
mlt_deque_push_back( m_videoFrameQ, m_videoFrame );
}
void preroll_video_frames(unsigned int n_frames) {
IDeckLinkMutableVideoFrame *frame;
for (unsigned int i = 0; i < n_frames; i++) {
if (deckLinkOutput->CreateVideoFrame(norms[norm].w,
norms[norm].h, 2*norms[norm].w, bpf,
bmdFrameFlagDefault, &frame) != S_OK) {
throw std::runtime_error("Failed to create frame");
}
schedule_frame(frame);
}
}
void preroll_video_frames(unsigned int n_frames) {
IDeckLinkMutableVideoFrame *frame;
IDeckLinkVideoFrameAncillary *anc;
for (unsigned int i = 0; i < n_frames; i++) {
if (deckLinkOutput->CreateVideoFrame(norms[norm].w,
norms[norm].h, 2*norms[norm].w, bpf,
bmdFrameFlagDefault, &frame) != S_OK) {
throw std::runtime_error("Failed to create frame");
}
if (deckLinkOutput->CreateAncillaryData(bpf, &anc) != S_OK) {
throw std::runtime_error("failed to set frame ancillary data");
}
if (frame->SetAncillaryData(anc) != S_OK) {
throw std::runtime_error("failed to set frame ancillary data");
}
schedule_frame(frame);
}
}
void BMDOutputDelegate::StartRunning ()
{
IDeckLinkDisplayMode* videoDisplayMode = NULL;
// Get the display mode for 1080i 59.95 - mode 6
// Changed to NTSC 23.98 - JB 20110215
videoDisplayMode = GetDisplayModeByIndex(1);
if (!videoDisplayMode)
return;
m_frameWidth = videoDisplayMode->GetWidth();
m_frameHeight = videoDisplayMode->GetHeight();
videoDisplayMode->GetFrameRate(&m_frameDuration, &m_frameTimescale);
// Calculate the number of frames per second, rounded up to the nearest integer. For example, for NTSC (29.97 FPS), framesPerSecond == 30.
m_framesPerSecond = (unsigned long)((m_frameTimescale + (m_frameDuration-1)) / m_frameDuration);
QImage image(m_frameWidth,m_frameHeight, QImage::Format_ARGB32);
image.fill(Qt::green);
//m_frame = VideoFramePtr(new VideoFrame(image, 1000/30));
HRESULT res;
// Set the video output mode
if (m_deckLinkOutput->EnableVideoOutput(videoDisplayMode->GetDisplayMode(), bmdVideoOutputFlagDefault) != S_OK)
{
//fprintf(stderr, "Failed to enable video output\n");
qDebug() << "BMDOutputDelegate::StartRunning(): Failed to EnableVideoOutput()";
goto bail;
}
res = m_deckLinkOutput->CreateVideoFrame(
m_frameWidth,
m_frameHeight,
m_frameWidth * 4,
bmdFormat8BitBGRA,
bmdFrameFlagDefault,
&m_rgbFrame);
if(res != S_OK)
{
qDebug() << "BMDOutputDelegate::StartRunning: Error creating RGB frame, res:"<<res;
goto bail;
}
res = m_deckLinkOutput->CreateVideoFrame(
m_frameWidth,
m_frameHeight,
m_frameWidth * 2,
bmdFormat8BitYUV,
bmdFrameFlagDefault,
&m_yuvFrame);
if(res != S_OK)
{
qDebug() << "BMDOutputDelegate::StartRunning: Error creating YUV frame, res:"<<res;
goto bail;
}
// // Generate a frame of black
// if (m_deckLinkOutput->CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth*2, bmdFormat8BitYUV, bmdFrameFlagDefault, &m_videoFrameBlack) != S_OK)
// {
// fprintf(stderr, "Failed to create video frame\n");
// goto bail;
// }
// FillBlack(m_videoFrameBlack);
//
// // Generate a frame of colour bars
// if (m_deckLinkOutput->CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth*2, bmdFormat8BitYUV, bmdFrameFlagDefault, &m_videoFrameBars) != S_OK)
// {
// fprintf(stderr, "Failed to create video frame\n");
// goto bail;
// }
// FillColourBars(m_videoFrameBars);
// Begin video preroll by scheduling a second of frames in hardware
m_totalFramesScheduled = 0;
for (unsigned i = 0; i < m_framesPerSecond; i++)
{
PrepareFrame();
ScheduleNextFrame(true);
}
// Args: startTime, timeScale, playback speed (1.0 = normal)
m_deckLinkOutput->StartScheduledPlayback(0, 100, 1.0);
m_running = true;
return;
bail:
// *** Error-handling code. Cleanup any resources that were allocated. *** //
StopRunning();
}