public IDeckLinkMutableVideoFrame CreateUploadVideoFrame()
{
IDeckLinkMutableVideoFrame newFrame = null;
m_selectedDevice.deckLinkOutput.CreateVideoFrame(1920, 1080, 1920 * 2, _BMDPixelFormat.bmdFormat8BitYUV, _BMDFrameFlags.bmdFrameFlagDefault, out newFrame);
return(newFrame);
}
private IDeckLinkMutableVideoFrame CreateOutputVideoFrame(Action <IDeckLinkVideoFrame> fillFrame, _BMDPixelFormat fillerPxFormat = _BMDPixelFormat.bmdFormat8BitYUV)
{
IDeckLinkMutableVideoFrame referenceFrame = null;
IDeckLinkMutableVideoFrame scheduleFrame = null;
m_selectedDevice.deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * bytesPerPixel, m_pixelFormat, _BMDFrameFlags.bmdFrameFlagDefault, out scheduleFrame);
if (m_pixelFormat == fillerPxFormat)
{
// Fill 8-bit YUV directly without conversion
fillFrame(scheduleFrame);
}
else
{
int bpp = 4;
if (fillerPxFormat == _BMDPixelFormat.bmdFormat8BitYUV)
{
bpp = 2;
}
// Pixel formats are different, first generate 8-bit YUV bars frame and convert to required format
m_selectedDevice.deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * bpp, fillerPxFormat, _BMDFrameFlags.bmdFrameFlagDefault, out referenceFrame);
fillFrame(referenceFrame);
try
{
frameConverter.ConvertFrame(referenceFrame, scheduleFrame);
}
catch
{
return(referenceFrame);
}
}
return(scheduleFrame);
}
private IDeckLinkMutableVideoFrame CreateOutputVideoFrame(Action <IDeckLinkVideoFrame> fillFrame)
{
IDeckLinkMutableVideoFrame referenceFrame = null;
IDeckLinkMutableVideoFrame scheduleFrame = null;
IDeckLinkVideoConversion frameConverter = new CDeckLinkVideoConversion();
m_selectedDevice.deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, BytesPerRow, m_selectedPixelFormat, _BMDFrameFlags.bmdFrameFlagDefault, out scheduleFrame);
if (m_selectedPixelFormat == _BMDPixelFormat.bmdFormat8BitYUV)
{
// Fill 8-bit YUV directly without conversion
fillFrame(scheduleFrame);
}
else
{
// Pixel formats are different, first generate 8-bit YUV bars frame and convert to required format
m_selectedDevice.deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * 2, _BMDPixelFormat.bmdFormat8BitYUV, _BMDFrameFlags.bmdFrameFlagDefault, out referenceFrame);
fillFrame(referenceFrame);
frameConverter.ConvertFrame(referenceFrame, scheduleFrame);
}
return(scheduleFrame);
}
private void StartRunning()
{
m_selectedDevice.VideoFrameCompleted += new DeckLinkVideoOutputHandler((b) => this.BeginInvoke((Action)(() => { ScheduleNextFrame(b); })));
m_selectedDevice.AudioOutputRequested += new DeckLinkAudioOutputHandler(() => this.BeginInvoke((Action)(() => { WriteNextAudioSamples(); })));
m_selectedDevice.PlaybackStopped += new DeckLinkPlaybackStoppedHandler(() => this.BeginInvoke((Action)(() => { DisableOutput(); })));
m_outputSignal = ((StringObjectPair <OutputSignal>)comboBoxOutputSignal.SelectedItem).value;
m_audioChannelCount = (uint)((int)comboBoxAudioChannels.SelectedItem);
m_audioSampleDepth = ((StringObjectPair <_BMDAudioSampleType>)comboBoxAudioDepth.SelectedItem).value;
m_audioSampleRate = _BMDAudioSampleRate.bmdAudioSampleRate48kHz;
//
//- Extract the IDeckLinkDisplayMode from the display mode popup menu
m_frameWidth = m_selectedDisplayMode.GetWidth();
m_frameHeight = m_selectedDisplayMode.GetHeight();
m_selectedDisplayMode.GetFrameRate(out m_frameDuration, out 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 = (uint)((m_frameTimescale + (m_frameDuration - 1)) / m_frameDuration);
// Set the video output mode
m_selectedDevice.deckLinkOutput.EnableVideoOutput(m_selectedDisplayMode.GetDisplayMode(), _BMDVideoOutputFlags.bmdVideoOutputFlagDefault);
// Set the audio output mode
m_selectedDevice.deckLinkOutput.EnableAudioOutput(m_audioSampleRate, m_audioSampleDepth, m_audioChannelCount, _BMDAudioOutputStreamType.bmdAudioOutputStreamContinuous);
// Set screen preview callback
m_selectedDevice.deckLinkOutput.SetScreenPreviewCallback(previewWindow);
// Generate one second of audio
m_audioBufferSampleLength = (uint)((m_framesPerSecond * (uint)m_audioSampleRate * m_frameDuration) / m_frameTimescale);
m_audioBuffer = Marshal.AllocCoTaskMem((int)(m_audioBufferSampleLength * m_audioChannelCount * ((uint)m_audioSampleDepth / 8)));
// Zero the buffer (interpreted as audio silence)
for (int i = 0; i < (m_audioBufferSampleLength * m_audioChannelCount * (uint)m_audioSampleDepth / 8); i++)
{
Marshal.WriteInt32(m_audioBuffer, i, 0);
}
uint audioSamplesPerFrame = (uint)(((uint)m_audioSampleRate * m_frameDuration) / m_frameTimescale);
if (m_outputSignal == OutputSignal.kOutputSignalPip)
{
FillSine(m_audioBuffer, audioSamplesPerFrame, m_audioChannelCount, m_audioSampleDepth);
}
else
{
FillSine(new IntPtr(m_audioBuffer.ToInt64() + (audioSamplesPerFrame * m_audioChannelCount * (uint)m_audioSampleDepth / 8)), (m_audioBufferSampleLength - audioSamplesPerFrame), m_audioChannelCount, m_audioSampleDepth);
}
// Generate a frame of black
m_videoFrameBlack = CreateOutputVideoFrame(FillBlack);
// Generate a frame of colour bars
m_videoFrameBars = CreateOutputVideoFrame(FillColourBars);
// Begin video preroll by scheduling a second of frames in hardware
m_totalFramesScheduled = 0;
for (uint i = 0; i < m_framesPerSecond; i++)
{
ScheduleNextFrame(true);
}
// Begin audio preroll. This will begin calling our audio callback, which will start the DeckLink output stream.
m_audioBufferOffset = 0;
m_selectedDevice.deckLinkOutput.BeginAudioPreroll();
m_running = true;
buttonStartStop.Text = "Stop";
}
public void StartRunning()
{
// m_selectedDevice.VideoFrameCompleted += new DeckLinkVideoOutputHandler((b) => this.BeginInvoke((Action)(() => { ScheduleNextFrame(b); })));
m_selectedDevice.AudioOutputRequested += new DeckLinkAudioOutputHandler(() => this.BeginInvoke((Action)(() => { WriteNextAudioSamples(); })));
m_selectedDevice.PlaybackStopped += new DeckLinkPlaybackStoppedHandler(() => this.BeginInvoke((Action)(() => { DisableOutput(); })));
m_audioChannelCount = 16;
m_audioSampleDepth = _BMDAudioSampleType.bmdAudioSampleType16bitInteger;
m_audioSampleRate = _BMDAudioSampleRate.bmdAudioSampleRate48kHz;
//
//- Extract the IDeckLinkDisplayMode from the display mode popup menu
IDeckLinkDisplayMode videoDisplayMode;
videoDisplayMode = ((DisplayModeEntry)comboBoxVideoFormat.SelectedItem).displayMode;
m_frameWidth = videoDisplayMode.GetWidth();
m_frameHeight = videoDisplayMode.GetHeight();
videoDisplayMode.GetFrameRate(out m_frameDuration, out 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 = (uint)((m_frameTimescale + (m_frameDuration - 1)) / m_frameDuration);
var mode = videoDisplayMode.GetDisplayMode();
// Set the video output mode
m_selectedDevice.deckLinkOutput.EnableVideoOutput(videoDisplayMode.GetDisplayMode(), _BMDVideoOutputFlags.bmdVideoOutputFlagDefault);
// Set the audio output mode
m_selectedDevice.deckLinkOutput.EnableAudioOutput(m_audioSampleRate, m_audioSampleDepth, m_audioChannelCount, _BMDAudioOutputStreamType.bmdAudioOutputStreamContinuous);
// Generate one second of audio
m_audioBufferSampleLength = (uint)(m_framesPerSecond * audioSamplesPerFrame());
int m_audioBufferDataLength = (int)(m_audioBufferSampleLength * audioDataPerSample());
m_audioBuffer = Marshal.AllocCoTaskMem(m_audioBufferDataLength);
m_audioBufferAllocated = true;
lock (m_selectedDevice)
{
// Zero the buffer (interpreted as audio silence)
for (int i = 0; i < m_audioBufferDataLength; i++)
{
Marshal.WriteInt32(m_audioBuffer, i, 0);
}
FillSine(new IntPtr(m_audioBuffer.ToInt64()), m_audioBufferSampleLength, m_audioChannelCount, m_audioSampleDepth);
m_audioBufferReadOffset = 0;
m_audioBufferWriteOffset = 0;
}
m_videoFrameARGBBars = CreateOutputVideoFrame(FillBGRAColourBars, _BMDPixelFormat.bmdFormat8BitARGB);
m_videoFrame = CreateOutputVideoFrame(FillARGBColourBars, _BMDPixelFormat.bmdFormat8BitARGB);
m_videoFrameBars = CreateOutputVideoFrame(FillColourBars);
m_pixelFormat = _BMDPixelFormat.bmdFormat8BitBGRA;
m_videoFrameBGRA = CreateOutputVideoFrame(FillColourBars);
m_videoFrameBGRABars = CreateOutputVideoFrame(FillBGRAColourBars, _BMDPixelFormat.bmdFormat8BitBGRA);
m_pixelFormat = _BMDPixelFormat.bmdFormat8BitARGB;
m_running = true;
buttonStartStop.Text = "Stop";
// Begin video preroll by scheduling a second of frames in hardware
m_totalFramesScheduled = 0;
for (uint i = 0; i < m_prerollFrames; i++)
{
ScheduleNextFrame(true);
}
// Begin audio preroll. This will begin calling our audio callback, which will then start the DeckLink output stream - StartScheduledPlayback.
m_selectedDevice.deckLinkOutput.BeginAudioPreroll();
// StopRunning();
}
