private void WriteSamples(Dictionary <int, Sample> samples)
{
++frameIndex;
long frameDuration;
MediaFactory.FrameRateToAverageTimePerFrame(framerate, 1, out frameDuration);
try
{
foreach (var item in samples)
{
var streamIndex = item.Key;
var sample = item.Value;
sample.SampleTime = frameDuration * frameIndex;
sample.SampleDuration = frameDuration;
sinkWriter.WriteSample(streamIndex, sample);
}
}
catch (SharpDXException e)
{
Debug.WriteLine(e.Message);
}
}
/// <summary>
/// Draws the given frame to the video.
/// </summary>
/// <param name="device">The device on which the given framebuffer is created.</param>
/// <param name="uploadedTexture">The texture which should be added to the video.</param>
protected override void DrawFrameInternal(EngineDevice device, MemoryMappedTexture32bpp uploadedTexture)
{
// Cancel here if the given texture has an invalid size
if (m_videoPixelSize != new Size2(uploadedTexture.Width, uploadedTexture.Height))
{
return;
}
m_frameIndex++;
MF.MediaBuffer mediaBuffer = MF.MediaFactory.CreateMemoryBuffer((int)uploadedTexture.SizeInBytes);
try
{
// Write all contents to the MediaBuffer for media foundation
int cbMaxLength = 0;
int cbCurrentLength = 0;
IntPtr mediaBufferPointer = mediaBuffer.Lock(out cbMaxLength, out cbCurrentLength);
try
{
if (this.FlipY)
{
unsafe
{
int stride = m_videoPixelSize.Width;
int *mediaBufferPointerNative = (int *)mediaBufferPointer.ToPointer();
int *targetBufferPointerNative = (int *)uploadedTexture.Pointer.ToPointer();
for (int loopY = 0; loopY < m_videoPixelSize.Height; loopY++)
{
for (int loopX = 0; loopX < m_videoPixelSize.Width; loopX++)
{
int actIndexTarget = loopX + (loopY * m_videoPixelSize.Width);
int actIndexSource = loopX + ((m_videoPixelSize.Height - (1 + loopY)) * m_videoPixelSize.Width);
mediaBufferPointerNative[actIndexTarget] = targetBufferPointerNative[actIndexSource];
}
}
}
}
else
{
unsafe
{
int stride = m_videoPixelSize.Width;
int *mediaBufferPointerNative = (int *)mediaBufferPointer.ToPointer();
int *targetBufferPointerNative = (int *)uploadedTexture.Pointer.ToPointer();
for (int loopY = 0; loopY < m_videoPixelSize.Height; loopY++)
{
for (int loopX = 0; loopX < m_videoPixelSize.Width; loopX++)
{
int actIndex = loopX + (loopY * m_videoPixelSize.Width);
mediaBufferPointerNative[actIndex] = targetBufferPointerNative[actIndex];
}
}
}
}
}
finally
{
mediaBuffer.Unlock();
}
mediaBuffer.CurrentLength = (int)uploadedTexture.SizeInBytes;
// Create the sample (includes image and timing information)
MF.Sample sample = MF.MediaFactory.CreateSample();
try
{
sample.AddBuffer(mediaBuffer);
long frameDuration = 10 * 1000 * 1000 / m_framerate;
sample.SampleTime = frameDuration * m_frameIndex;
sample.SampleDuration = frameDuration;
m_sinkWriter.WriteSample(m_streamIndex, sample);
}
finally
{
GraphicsHelper.SafeDispose(ref sample);
}
}
finally
{
GraphicsHelper.SafeDispose(ref mediaBuffer);
}
}
