private static void RoundTripTestPattern()
{
var stampedTestPattern = _testPattern.Clone() as System.Drawing.Image;
int tWidth = _testPattern.Width;
int tHeight = _testPattern.Height;
AddTimeStampAndLocation(stampedTestPattern, DateTime.UtcNow.ToString("dd MMM yyyy HH:mm:ss:fff"), "Test Pattern");
var sampleBuffer = PixelConverter.BitmapToRGBA(stampedTestPattern as System.Drawing.Bitmap, _testPattern.Width, _testPattern.Height);
byte[] i420 = PixelConverter.RGBAtoYUV420Planar(sampleBuffer, _testPattern.Width, _testPattern.Height);
var encodedBuffer = _vp8Encoder.Encode(i420, false);
Console.WriteLine($"VP8 encoded buffer length {encodedBuffer.Length}.");
List <byte[]> i420Frames = _vp8Decoder.Decode(encodedBuffer, encodedBuffer.Length, out var dWidth, out var dHeight);
Console.WriteLine($"VP8 decoded frames count {i420Frames.Count}, first frame length {i420Frames.First().Length}, width {dWidth}, height {dHeight}.");
byte[] rgb = i420Frames.First();
unsafe
{
fixed(byte *s = rgb)
{
System.Drawing.Bitmap bmpImage = new System.Drawing.Bitmap((int)dWidth, (int)dHeight, rgb.Length / (int)dHeight, PixelFormat.Format24bppRgb, (IntPtr)s);
bmpImage.Save("encodedroundtrip.bmp");
bmpImage.Dispose();
}
}
}
private static void SendTestPattern(object state)
{
lock (_sendTestPatternTimer)
{
unsafe
{
if (OnTestPatternSampleReady != null)
{
var stampedTestPattern = _testPattern.Clone() as System.Drawing.Image;
AddTimeStampAndLocation(stampedTestPattern, DateTime.UtcNow.ToString("dd MMM yyyy HH:mm:ss:fff"), "Test Pattern");
var sampleBuffer = PixelConverter.BitmapToRGBA(stampedTestPattern as System.Drawing.Bitmap, _testPattern.Width, _testPattern.Height);
byte[] i420Buffer = PixelConverter.RGBAtoYUV420Planar(sampleBuffer, _testPattern.Width, _testPattern.Height);
var encodedBuffer = _vp8Encoder.Encode(i420Buffer, false);
_presentationTimestamp += VIDEO_TIMESTAMP_SPACING;
if (encodedBuffer != null)
{
OnTestPatternSampleReady?.Invoke(SDPMediaTypesEnum.video, VIDEO_TIMESTAMP_SPACING, encodedBuffer);
}
stampedTestPattern.Dispose();
}
}
}
}
private static void RoundTripTestPatternNoEncoding()
{
var stampedTestPattern = _testPattern.Clone() as System.Drawing.Image;
int tWidth = _testPattern.Width;
int tHeight = _testPattern.Height;
AddTimeStampAndLocation(stampedTestPattern, DateTime.UtcNow.ToString("dd MMM yyyy HH:mm:ss:fff"), "Test Pattern");
var sampleBuffer = PixelConverter.BitmapToRGBA(stampedTestPattern as System.Drawing.Bitmap, _testPattern.Width, _testPattern.Height);
byte[] i420 = PixelConverter.RGBAtoYUV420Planar(sampleBuffer, _testPattern.Width, _testPattern.Height);
byte[] rgb = PixelConverter.I420toRGB(i420, tWidth, tHeight);
unsafe
{
fixed(byte *s = rgb)
{
System.Drawing.Bitmap bmpImage = new System.Drawing.Bitmap(tWidth, tHeight, rgb.Length / tHeight, PixelFormat.Format24bppRgb, (IntPtr)s);
bmpImage.Save("roundtrip.bmp");
bmpImage.Dispose();
}
}
}