/// <inheritdoc />
/// <summary>
/// Encodes a video frame.
/// </summary>
/// <param name="data">Bitmap data.</param>
/// <param name="time">Time in ticks.</param>
/// <param name="stream">Output stream.</param>
public void Encode(BitmapData data, long time, Stream stream)
{
// create sample
Sample sample = MediaFactory.CreateSample();
MediaBuffer buffer;
if (this.surface == null)
{
// create buffer
MediaFactory.Create2DMediaBuffer(
data.Width,
data.Height,
new FourCC((int)Format.X8R8G8B8),
new RawBool(false),
out buffer);
// calculate length
buffer.CurrentLength = data.Stride * data.Height;
// copy data
Utilities.CopyMemory(buffer.Lock(out _, out _), data.Scan0, buffer.CurrentLength);
// unlock bits
buffer.Unlock();
}
else
{
// create buffer
MediaFactory.CreateDXGISurfaceBuffer(typeof(Texture2D).GUID,
this.surface,
0,
new RawBool(false),
out buffer);
// set buffer length
buffer.CurrentLength = buffer.QueryInterface <Buffer2D>().ContiguousLength;
}
// add buffer to sample
sample.AddBuffer(buffer);
sample.SampleTime = time;
try { this.sinkWriter.WriteSample(this.streamIdx, sample); } catch (SharpDXException) { } finally {
buffer.Dispose();
sample.Dispose();
}
}
/// <inheritdoc />
/// <summary>
/// Processes and encodes a frame into the destination stream
/// </summary>
/// <param name="frame">
/// A <see cref="VideoFrame" /> instance containing information about the locked frame bitmap or texture
/// </param>
public override void Feed(VideoFrame frame)
{
// create sample
Sample sample = MediaFactory.CreateSample();
MediaBuffer buffer;
switch (frame)
{
case D3D11VideoFrame d3D11Frame: // Direct3D 11 texture
// create media buffer
MediaFactory.CreateDXGISurfaceBuffer(typeof(Texture2D).GUID,
d3D11Frame.Texture,
0,
new RawBool(false),
out buffer);
// set buffer length
using (Buffer2D buffer2D = buffer.QueryInterface <Buffer2D>()) {
buffer.CurrentLength = buffer2D.ContiguousLength;
}
break;
case BitmapVideoFrame bmpFrame: // WIC bitmap
// create media buffer
MediaFactory.CreateWICBitmapBuffer(typeof(Bitmap).GUID, bmpFrame.Bitmap, out buffer);
// calculate buffer length
buffer.CurrentLength = bmpFrame.BitmapLock.Stride * bmpFrame.Height;
// copy pixels
Utilities.CopyMemory(buffer.Lock(out _, out _), bmpFrame.BitmapLock.Data.DataPointer, buffer.CurrentLength);
// unlock bits
buffer.Unlock();
break;
case GdiBitmapVideoFrame gdiFrame: // GDI-compatible bitmap
// create media buffer
// create buffer for copying the bitmap data
MediaFactory.Create2DMediaBuffer(frame.Width,
frame.Height,
new FourCC((int)Format.X8R8G8B8),
new RawBool(false), out buffer);
// calculate buffer length
buffer.CurrentLength = gdiFrame.BitmapData.Stride * frame.Height;
// copy data
Utilities.CopyMemory(buffer.Lock(out _, out _), gdiFrame.BitmapData.Scan0, buffer.CurrentLength);
// unlock bits
buffer.Unlock();
break;
default:
throw new NotSupportedException("The supplied frame does not have a supported type");
}
// add buffer to sample
sample.AddBuffer(buffer);
// set up sample timing
if (this.lastFrameTime != 0)
{
sample.SampleTime = frame.PresentTime - this.firstFramePresentTime;
sample.SampleDuration = frame.PresentTime - this.lastFrameTime;
}
else
{
// set first frame present time so that we can set the timestamp of subsequent frames relative to the
// beggining of the video
this.firstFramePresentTime = frame.PresentTime;
}
this.lastFrameTime = frame.PresentTime;
try {
this.sinkWriter.WriteSample(this.streamIdx, sample);
} finally {
buffer.Dispose();
sample.Dispose();
}
}