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;
}
public DLDirect(IDeckLink deckLink, IDeckLinkDisplayMode displayMode)
{
PreRollFrameCount = 4;
this.displayMode = displayMode;
this.m_deckLink = deckLink;
DisplayWidth = displayMode.GetWidth();
DisplayHeight = displayMode.GetHeight();
m_running = false;
// Get the IDeckLinkOutput interface
m_deckLinkOutput = (IDeckLinkOutput)m_deckLink;
// Provide this class as a delegate to the audio and video output interfaces
m_deckLinkOutput.SetScheduledFrameCompletionCallback(this);
m_frameWidth = displayMode.GetWidth();
m_frameHeight = displayMode.GetHeight();
displayMode.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);
FPS = (int)m_framesPerSecond;
// Set the video output mode
m_deckLinkOutput.EnableVideoOutput(displayMode.GetDisplayMode(), _BMDVideoOutputFlags.bmdVideoOutputFlagDefault);
// Generate the frame used for playback
m_deckLinkOutput.CreateVideoFrame(m_frameWidth, m_frameHeight, m_frameWidth * 4, _BMDPixelFormat.bmdFormat8BitBGRA, _BMDFrameFlags.bmdFrameFlagDefault, out m_videoFramePlayback);
m_totalFramesScheduled = 0;
}
private void DisplayModeChanged(IDeckLinkDisplayMode newDisplayMode)
{
foreach (DisplayModeEntry item in comboBoxVideoFormat.Items)
{
if (item.displayMode.GetDisplayMode() == newDisplayMode.GetDisplayMode())
{
comboBoxVideoFormat.SelectedItem = item;
}
}
}
private void DisplayModeChanged(IDeckLinkDisplayMode newDisplayMode)
{
foreach (DisplayModeEntry item in comboBoxVideoFormat.Items)
{
if (item.displayMode.GetDisplayMode() == newDisplayMode.GetDisplayMode())
{
comboBoxVideoFormat.SelectedItem = item;
}
if (m_selectedDevice != null)
{
labelPixelFormat.Text = m_selectedDevice.pxFormat;
}
}
}
public static string LogDisplayMode(IDeckLinkDisplayMode deckLinkDisplayMode)
{
string log = "";
if (deckLinkDisplayMode != null)
{
var displayMode = deckLinkDisplayMode.GetDisplayMode();
int width = deckLinkDisplayMode.GetWidth();
int height = deckLinkDisplayMode.GetHeight();
deckLinkDisplayMode.GetName(out string name);
var fieldDominance = deckLinkDisplayMode.GetFieldDominance();
deckLinkDisplayMode.GetFrameRate(out long frameDuration, out long timeScale);
var fps = ((double)timeScale / frameDuration);
log = displayMode + " " + width + "x" + height + " " + fps.ToString("0.00") + "fps " + fieldDominance;
}
return(log);
}
public static List <DeckLinkDisplayModeDescription> GetDisplayDescriptions(IDeckLinkInput deckLinkInput, List <_BMDPixelFormat> pixelFormats,
_BMDVideoConnection connection = _BMDVideoConnection.bmdVideoConnectionHDMI,
_BMDSupportedVideoModeFlags videoModeFlags = _BMDSupportedVideoModeFlags.bmdSupportedVideoModeDefault)
{
List <DeckLinkDisplayModeDescription> displayDescriptions = new List <DeckLinkDisplayModeDescription>();
IDeckLinkDisplayModeIterator iterator = null;
try
{
deckLinkInput.GetDisplayModeIterator(out iterator);
while (true)
{
IDeckLinkDisplayMode displayMode = null;
try
{
iterator.Next(out displayMode);
if (displayMode == null)
{
break;
}
var displayModeId = displayMode.GetDisplayMode();
displayMode.GetName(out string displayName);
displayMode.GetFrameRate(out long frameDuration, out long timeScale);
var fps = (double)timeScale / frameDuration;
int width = displayMode.GetWidth();
int height = displayMode.GetHeight();
var resolution = width + "x" + height;
var displayModeFlags = displayMode.GetFlags();
var fieldDominance = displayMode.GetFieldDominance();
foreach (var pixFmt in pixelFormats)
{
deckLinkInput.DoesSupportVideoMode(connection, displayModeId, pixFmt, videoModeFlags, out int supported);
if (supported != 0)
{
displayDescriptions.Add(new DeckLinkDisplayModeDescription
{
ModeId = (long)displayModeId,
Width = width,
Height = height,
Fps = fps,
PixFmt = (long)pixFmt,
Description = displayName + " (" + resolution + " " + fps.ToString("0.##") + " fps " + GetFourCCStr(pixFmt) + ")",
});
}
else
{
//Console.WriteLine("Display mode not supported: "+ displayModeId + " " + pixFmt);
}
}
}
finally
{
if (displayMode != null)
{
Marshal.ReleaseComObject(displayMode);
displayMode = null;
}
}
}
}
finally
{
if (iterator != null)
{
Marshal.ReleaseComObject(iterator);
iterator = null;
}
}
return(displayDescriptions);
}
/// <summary>
/// SetCallback
/// </summary>
public void VideoInputFormatChanged(_BMDVideoInputFormatChangedEvents notificationEvents, IDeckLinkDisplayMode newDisplayMode, _BMDDetectedVideoInputFormatFlags detectedSignalFlags)
{
if (newDisplayMode == null)
{
return;
}
Run(() => notifications.Text = string.Format("Video format changed: mode={0}", newDisplayMode.GetDisplayMode()));
Marshal.ReleaseComObject(newDisplayMode);
}