/*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(TextureTarget.Texture2D, textureName);
if (width != handle.WidthCache || height != handle.HeightCache)
{
handle.WidthCache = width;
handle.HeightCache = height;
GL.TexImage2D(
TextureTarget.Texture2D,
0,
PixelInternalFormat.Rgba,
width,
height,
0,
PixelFormat.Bgra,
PixelType.UnsignedByte,
pinnedArray.AddrOfPinnedObject());
}
else
{
GL.TexSubImage2D(
TextureTarget.Texture2D,
0,
0,
0,
width,
height,
PixelFormat.Bgra,
PixelType.UnsignedByte,
pinnedArray.AddrOfPinnedObject());
}
pinnedArray.Free();
}
public void CopyPixels(byte[] pixels)
{
var size = PixelBufferImpl.CVPixelBufferGetBytesPerRow(_handle).ToInt32() * Height;
if (size == 0)
{
return;
}
if (pixels.Length != size)
{
throw new ArgumentOutOfRangeException("pixel buffer invalide size");
}
PixelBufferImpl.CVPixelBufferLockBaseAddress(_handle, CVPixelBufferLockFlags.kCVPixelBufferLock_ReadOnly);
Marshal.Copy(
PixelBufferImpl.CVPixelBufferGetBaseAddress(_handle),
pixels,
0,
size);
PixelBufferImpl.CVPixelBufferUnlockBaseAddress(_handle, CVPixelBufferLockFlags.kCVPixelBufferLock_ReadOnly);
}