/*public void UpdateTexture(int textureName)
* {
* GL.BindTexture(TextureTarget.Texture2D, textureName);
* PixelBufferImpl.CVPixelBufferLockBaseAddress(_handle, CVPixelBufferLockFlags.kCVPixelBufferLock_ReadOnly);
* GL.TexImage2D(
* TextureTarget.Texture2D,
* 0,
* PixelInternalFormat.Rgba,
* Width,
* Height,
* 0,
* PixelFormat.Bgra,
* PixelType.UnsignedByte,
* PixelBufferImpl.CVPixelBufferGetBaseAddress(_handle));
* PixelBufferImpl.CVPixelBufferUnlockBaseAddress(_handle, CVPixelBufferLockFlags.kCVPixelBufferLock_ReadOnly);
* }*/
public void UpdateTexture(int textureName, VideoHandle handle)
{
var width = Width;
var height = Height;
var bytesPerRow = BytesPerRow;
var actualBytesPerRow = width * 4;
PixelBufferImpl.CVPixelBufferLockBaseAddress(_handle, CVPixelBufferLockFlags.kCVPixelBufferLock_ReadOnly);
var baseAddress = PixelBufferImpl.CVPixelBufferGetBaseAddress(_handle);
var sourceAddress = baseAddress;
var sourceOffset = 0;
var destOffset = 0;
for (int y = 0; y < height; y++)
{
sourceOffset = y * bytesPerRow;
destOffset = y * actualBytesPerRow;
sourceAddress = new IntPtr(baseAddress.ToInt64() + (Int64)sourceOffset);
Marshal.Copy(sourceAddress, handle.Pixels, destOffset, actualBytesPerRow);
}
PixelBufferImpl.CVPixelBufferUnlockBaseAddress(_handle, CVPixelBufferLockFlags.kCVPixelBufferLock_ReadOnly);
var pinnedArray = GCHandle.Alloc(handle.Pixels, GCHandleType.Pinned);
_gl.BindTexture((int)TextureTarget.Texture2D, (int)textureName);
if (width != handle.WidthCache || height != handle.HeightCache)
{
handle.WidthCache = width;
handle.HeightCache = height;
_gl.TexImage2D(
(int)TextureTarget.Texture2D,
0,
(int)PixelInternalFormat.Rgba,
width,
height,
0,
(int)PixelFormat.Bgra,
(int)PixelType.UnsignedByte,
pinnedArray.AddrOfPinnedObject());
}
else
{
_gl.TexSubImage2D(
(int)TextureTarget.Texture2D,
0,
0,
0,
width,
height,
(int)PixelFormat.Bgra,
(int)PixelType.UnsignedByte,
pinnedArray.AddrOfPinnedObject());
}
pinnedArray.Free();
}
public static void BindTexture(GLTextureTarget target, GLTextureHandle texture)
{
_gl.BindTexture(target, texture);
}
public void UpdateTexture(int textureHandle)
{
if (Width > 0 && Height > 0)
{
using (var dc = _drawingVisual.RenderOpen())
dc.DrawVideo(_mediaPlayer, new System.Windows.Rect(0, 0, Width, Height));
if (_renderTargetBitmap == null || (_widthCache != Width || _heightCache != Height))
{
_renderTargetBitmap = new RenderTargetBitmap(Width, Height, 100, 100, PixelFormats.Pbgra32);
}
_renderTargetBitmap.Render(_drawingVisual);
var stride = _renderTargetBitmap.PixelWidth * 4;
var size = _renderTargetBitmap.PixelHeight * stride;
if (_pixelBuffer == null || _pixelBuffer.Length != size)
{
_pixelBuffer = new byte[size];
}
var pinnedBuffer = GCHandle.Alloc(_pixelBuffer, GCHandleType.Pinned);
try
{
var pixelBufferPtr = pinnedBuffer.AddrOfPinnedObject();
_renderTargetBitmap.CopyPixels(Int32Rect.Empty, pixelBufferPtr, size, stride);
_gl.BindTexture((int)TextureTarget.Texture2D, (int)textureHandle);
if (_widthCache != Width || _heightCache != Height || _lastTextureHandle != textureHandle)
{
_widthCache = Width;
_heightCache = Height;
_lastTextureHandle = textureHandle;
_gl.TexImage2D(
(int)TextureTarget.Texture2D,
0,
(int)PixelFormat.Bgra,
Width,
Height,
0,
(int)PixelFormat.Bgra,
(int)PixelType.UnsignedByte,
pixelBufferPtr);
}
else
{
_gl.TexSubImage2D(
(int)TextureTarget.Texture2D,
0,
0,
0,
Width,
Height,
(int)PixelFormat.Bgra,
(int)PixelType.UnsignedByte,
pixelBufferPtr);
}
}
finally
{
pinnedBuffer.Free();
}
}
}
