public Instance(int deviceID, string modeString, uint textureHandle, EnumEntry format, EnumEntry usage, SyncLoop syncLoop)
{
IDeckLink device = null;
WorkerThread.Singleton.PerformBlocking(() => {
device = DeviceRegister.Singleton.GetDeviceHandle(deviceID);
});
try
{
ModeRegister.Mode mode = null;
WorkerThread.Singleton.PerformBlocking(() =>
{
mode = ModeRegister.Singleton.Modes[modeString];
});
bool useCallback = syncLoop != SyncLoop.DeckLink;
this.Source = new Source(device, mode, useCallback);
this.ReadTexture = new ReadTexture(mode.CompressedWidth, mode.Height, textureHandle, format, usage);
this.FBuffer = new byte[this.ReadTexture.BufferLength];
if (useCallback)
{
this.Source.NewFrame += Source_NewFrame;
}
}
catch
{
if (this.Source != null)
{
this.Source.Dispose();
}
if (this.ReadTexture != null)
{
this.ReadTexture.Dispose();
}
if (this.FBuffer != null)
{
this.FBuffer = null;
}
throw;
}
}
public void Initialise(IDeckLink device, ModeRegister.Mode mode, bool useDeviceCallbacks)
{
Stop();
try
{
WorkerThread.Singleton.PerformBlocking(() => {
//--
//attach to device
//
if (device == null)
{
throw (new Exception("No device"));
}
if (mode == null)
{
throw (new Exception("No mode selected"));
}
FDevice = device;
var outputDevice = FDevice as IDeckLinkOutput;
if (outputDevice == null)
{
throw (new Exception("Device does not support output"));
}
FOutputDevice = outputDevice;
//
//--
//--
//set memory allocator
//
FOutputDevice.SetVideoOutputFrameMemoryAllocator(FMemoryAllocator);
//
//--
//--
//select mode
//
_BMDDisplayModeSupport support;
IDeckLinkDisplayMode displayMode;
FOutputDevice.DoesSupportVideoMode(mode.DisplayModeHandle.GetDisplayMode(), mode.PixelFormat, mode.Flags, out support, out displayMode);
if (support == _BMDDisplayModeSupport.bmdDisplayModeNotSupported)
{
throw (new Exception("Mode not supported"));
}
this.Mode = mode;
this.FWidth = Mode.Width;
this.FHeight = Mode.Height;
Mode.DisplayModeHandle.GetFrameRate(out this.FFrameDuration, out this.FFrameTimescale);
//
//--
//--
//enable the output
//
FOutputDevice.EnableVideoOutput(Mode.DisplayModeHandle.GetDisplayMode(), Mode.Flags);
//
//--
//--
//generate frames
IntPtr data;
FOutputDevice.CreateVideoFrame(FWidth, FHeight, Mode.CompressedWidth * 4, Mode.PixelFormat, _BMDFrameFlags.bmdFrameFlagDefault, out FVideoFrame);
FVideoFrame.GetBytes(out data);
FillBlack(data);
//
//--
//--
//scheduled playback
if (useDeviceCallbacks == true)
{
FOutputDevice.SetScheduledFrameCompletionCallback(this);
this.FFrameIndex = 0;
for (int i = 0; i < (int)this.Framerate; i++)
{
ScheduleFrame(true);
}
FOutputDevice.StartScheduledPlayback(0, 100, 1.0);
}
//
//--
FRunning = true;
});
}
catch (Exception e)
{
this.FWidth = 0;
this.FHeight = 0;
this.FRunning = false;
throw;
}
}
public Source(IDeckLink device, ModeRegister.Mode mode, bool useDeviceCallbacks)
{
this.Initialise(device, mode, useDeviceCallbacks);
}