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 LoadSignal(OutputSignal signal)
{
signal.transform.parent = signalHolder;
signal.signalName = signal.inputPins[0].pinName;
signals.Add(signal);
}
private void StartRunning()
{
m_outputSignal = ((StringObjectPair <OutputSignal>)comboBoxOutputSignal.SelectedItem).value;
m_audioChannelCount = uint.Parse((string)comboBoxAudioChannels.SelectedItem);
m_audioSampleDepth = ((StringObjectPair <_BMDAudioSampleType>)comboBoxAudioDepth.SelectedItem).value;
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);
// Set the video output mode
m_deckLinkOutput.EnableVideoOutput(videoDisplayMode.GetDisplayMode(), _BMDVideoOutputFlags.bmdVideoOutputFlagDefault);
// Set the audio output mode
m_deckLinkOutput.EnableAudioOutput(m_audioSampleRate, m_audioSampleDepth, m_audioChannelCount, _BMDAudioOutputStreamType.bmdAudioOutputStreamContinuous);
// 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_deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * 2, _BMDPixelFormat.bmdFormat8BitYUV, _BMDFrameFlags.bmdFrameFlagDefault, out m_videoFrameBlack);
FillBlack(m_videoFrameBlack);
// Generate a frame of colour bars
m_deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * 2, _BMDPixelFormat.bmdFormat8BitYUV, _BMDFrameFlags.bmdFrameFlagDefault, out m_videoFrameBars);
FillColourBars(m_videoFrameBars);
// 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_deckLinkOutput.BeginAudioPreroll();
m_running = true;
buttonStartStop.Text = "Stop";
}
