public void Start()
{
uint audioChannelCount = 2;
_BMDAudioSampleType audioSampleDepth = _BMDAudioSampleType.bmdAudioSampleType16bitInteger;
_BMDAudioSampleRate audioSampleRate = _BMDAudioSampleRate.bmdAudioSampleRate48kHz;
deckLinkOutput.EnableVideoOutput(displayMode.GetDisplayMode(), _BMDVideoOutputFlags.bmdVideoOutputFlagDefault);
deckLinkOutput.EnableAudioOutput(audioSampleRate, audioSampleDepth, audioChannelCount, _BMDAudioOutputStreamType.bmdAudioOutputStreamContinuous);
deckLinkOutput.CreateVideoFrame(frameWidth, frameHeight, frameWidth * 2, _BMDPixelFormat.bmdFormat8BitYUV, _BMDFrameFlags.bmdFrameFlagDefault, out videoFrameBlack);
FillBlack(videoFrameBlack);
deckLinkOutput.CreateVideoFrame(frameWidth, frameHeight, frameWidth * 2, _BMDPixelFormat.bmdFormat8BitYUV, _BMDFrameFlags.bmdFrameFlagDefault, out videoFrameBars);
FillColourBars(videoFrameBars);
totalFramesScheduled = 0;
for (uint i = 0; i < framesPerSecond; i++)
{
ScheduleNextFrame(true);
}
deckLinkOutput.BeginAudioPreroll();
running = true;
}
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";
}
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";
}
public AudioSampleRateEntry(_BMDAudioSampleRate sampleRate)
{
this.sampleRate = sampleRate;
}
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();
}
private Decklink(IDeckLink cDevice)
{
(new Logger()).WriteDebug3("in");
try
{
nAudioQueueLength = nAudioQueueLengthPrevious = 0;
nBTLAudioQueueLengthPrevious = nBTLVideoQueueLengthPrevious = nVideoQueueLengthPrevious = 0;
_iDLDevice = cDevice;
if(Preferences.bDeviceInput)
_iDLInput = (IDeckLinkInput)_iDLDevice;
else
_iDLOutput = (IDeckLinkOutput)_iDLDevice;
IDeckLinkDisplayModeIterator cDisplayModeIterator;
IDeckLinkDisplayMode cNextDLDisplayMode;
string sDisplayModeName = "";
string sMessage = "decklink supported modes:<br>";
if (Preferences.bDeviceInput)
{
_iDLInputDisplayMode = null;
_iDLInput.GetDisplayModeIterator(out cDisplayModeIterator);
while (true)
{
cDisplayModeIterator.Next(out cNextDLDisplayMode);
if (cNextDLDisplayMode == null)
break;
cNextDLDisplayMode.GetName(out sDisplayModeName);
if (null == _iDLInputDisplayMode && sDisplayModeName.ToLower().Contains(Preferences.sVideoFormat))
{
sMessage += "selected:";
_iDLInputDisplayMode = cNextDLDisplayMode;
}
else
sMessage += "\t";
sMessage += sDisplayModeName + "<br>";
}
(new Logger()).WriteNotice(sMessage);
if (null == _iDLInputDisplayMode)
throw new Exception("can't find " + Preferences.sVideoFormat + " mode within specified device for input");
}
else
{
_nFramesAudioDropped = 0;
_iDLOutputDisplayMode = null;
_iDLOutput.GetDisplayModeIterator(out cDisplayModeIterator);
while (true)
{
cDisplayModeIterator.Next(out cNextDLDisplayMode);
if (cNextDLDisplayMode == null)
break;
cNextDLDisplayMode.GetName(out sDisplayModeName);
if (null == _iDLOutputDisplayMode && sDisplayModeName.ToLower().Contains(Preferences.sVideoFormat))
{
sMessage += "selected:";
_iDLOutputDisplayMode = cNextDLDisplayMode;
}
else
sMessage += "\t";
sMessage += sDisplayModeName + "<br>";
}
(new Logger()).WriteNotice(sMessage);
if (null == _iDLOutputDisplayMode)
throw new Exception("can't find " + Preferences.sVideoFormat + " mode within specified device for output");
stArea = new Area(0, 0, (ushort)_iDLOutputDisplayMode.GetWidth(), (ushort)_iDLOutputDisplayMode.GetHeight());
long nFrameDuration, nFrameTimescale;
_iDLOutputDisplayMode.GetFrameRate(out nFrameDuration, out nFrameTimescale);
_nFPS = (ushort)((nFrameTimescale + (nFrameDuration - 1)) / nFrameDuration); //до ближайшего целого - взято из примера деклинка
_bDoWritingFrames = false;
_aqWritingFrames = new Queue<byte[]>();
_cThreadWritingFramesWorker = new System.Threading.Thread(WritingFramesWorker);
_cThreadWritingFramesWorker.IsBackground = true;
_cThreadWritingFramesWorker.Priority = System.Threading.ThreadPriority.Normal;
_cThreadWritingFramesWorker.Start();
if (Preferences.bAudio)
{
switch (Preferences.nAudioBitDepth)
{
case 32:
_eAudioSampleDepth = _BMDAudioSampleType.bmdAudioSampleType32bitInteger;
break;
case 16:
default:
_eAudioSampleDepth = _BMDAudioSampleType.bmdAudioSampleType16bitInteger;
break;
}
switch (Preferences.nAudioSamplesRate)
{
case 48000:
_eAudioSampleRate = _BMDAudioSampleRate.bmdAudioSampleRate48kHz;
break;
default:
throw new Exception("unsupported audio sample rate [" + Preferences.nAudioSamplesRate + "]");
}
//_pAudioSamplesBuffer = Marshal.AllocCoTaskMem((int)_nAudioFrameSize_InBytes);
_cAudioBuffer = new AudioBuffer();
_nAudioBufferCapacity_InSamples = Preferences.nAudioSamplesPerFrame * Preferences.nQueueDeviceLength;
//for (int nIndx = 0; _nAudioFrameSize_InBytes > nIndx; nIndx++)
// Marshal.WriteByte(_pAudioSamplesBuffer, nIndx, 0);
_nTimescale = (ushort)_eAudioSampleRate;
_nFrameDuration = (ushort)(_nTimescale / _nFPS);
}
if (null != Preferences.cDownStreamKeyer)
_iDeckLinkKeyer = (IDeckLinkKeyer)_iDLDevice;
}
}
catch (Exception ex)
{
(new Logger()).WriteError(ex);
throw;
}
(new Logger()).WriteDebug4("return");
}
