public CVMetalTexture TextureFromImage(CVImageBuffer imageBuffer, MTLPixelFormat format, nint width, nint height, nint planeIndex, out CVReturn errorCode)
{
if (imageBuffer == null)
{
throw new ArgumentNullException("imageBuffer");
}
IntPtr texture;
errorCode = CVMetalTextureCacheCreateTextureFromImage(
allocator: IntPtr.Zero,
textureCache: handle, /* textureCache dict, one day we might add it */
sourceImage: imageBuffer.Handle,
textureAttr: IntPtr.Zero,
format: (nuint)(ulong)format,
width: width,
height: height,
planeIndex: planeIndex,
textureOut: out texture);
if (errorCode != 0)
{
return(null);
}
return(new CVMetalTexture(texture));
}
public static CMSampleBuffer CreateReadyWithImageBuffer (CVImageBuffer imageBuffer,
CMFormatDescription formatDescription, CMSampleTimingInfo[] sampleTiming, out CMSampleBufferError error)
{
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
if (formatDescription == null)
throw new ArgumentNullException ("formatDescription");
IntPtr buffer;
error = CMSampleBufferCreateReadyWithImageBuffer (IntPtr.Zero, imageBuffer.handle,
formatDescription.Handle, sampleTiming, out buffer);
if (error != CMSampleBufferError.None)
return null;
return new CMSampleBuffer (buffer, true);
}
public static CMSampleBuffer CreateForImageBuffer (CVImageBuffer imageBuffer, bool dataReady, CMVideoFormatDescription formatDescription, CMSampleTimingInfo sampleTiming, out CMSampleBufferError error)
{
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
if (formatDescription == null)
throw new ArgumentNullException ("formatDescription");
IntPtr buffer;
error = CMSampleBufferCreateForImageBuffer (IntPtr.Zero,
imageBuffer.handle, dataReady,
IntPtr.Zero, IntPtr.Zero,
formatDescription.handle,
ref sampleTiming,
out buffer);
if (error != CMSampleBufferError.None)
return null;
return new CMSampleBuffer (buffer, true);
}
public bool VideoMatchesImageBuffer(CVImageBuffer imageBuffer)
{
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
return CMVideoFormatDescriptionMatchesImageBuffer (handle, imageBuffer.Handle);
}
public static CMVideoFormatDescription CreateForImageBuffer(CVImageBuffer imageBuffer, out CMFormatDescriptionError error)
{
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
IntPtr desc;
error = CMVideoFormatDescriptionCreateForImageBuffer (IntPtr.Zero, imageBuffer.handle, out desc);
if (error != CMFormatDescriptionError.None)
return null;
return new CMVideoFormatDescription (desc, true);
}
public VTStatus EncodeFrame (CVImageBuffer imageBuffer, CMTime presentationTimestamp, CMTime duration,
NSDictionary frameProperties, IntPtr sourceFrame, out VTEncodeInfoFlags infoFlags,
VTCompressionOutputHandler outputHandler)
{
if (Handle == IntPtr.Zero)
throw new ObjectDisposedException ("CompressionSession");
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
if (outputHandler == null)
throw new ArgumentNullException ("outputHandler");
unsafe {
var block = new BlockLiteral ();
var blockPtr = █
block.SetupBlock (compressionOutputHandlerTrampoline, outputHandler);
try {
return VTCompressionSessionEncodeFrameWithOutputHandler (Handle,
imageBuffer.Handle, presentationTimestamp, duration,
frameProperties == null ? IntPtr.Zero : frameProperties.Handle,
out infoFlags, blockPtr);
} finally {
blockPtr->CleanupBlock ();
}
}
}
public VTStatus EncodeFrame (CVImageBuffer imageBuffer, CMTime presentationTimestampe, CMTime duration,
NSDictionary frameProperties, IntPtr sourceFrame, out VTEncodeInfoFlags infoFlags)
{
if (Handle == IntPtr.Zero)
throw new ObjectDisposedException ("CompressionSession");
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
return VTCompressionSessionEncodeFrame (Handle, imageBuffer.Handle, presentationTimestampe, duration,
frameProperties == null ? IntPtr.Zero : frameProperties.Handle,
sourceFrame, out infoFlags);
}
public CVMetalTexture TextureFromImage(CVImageBuffer imageBuffer, MTLPixelFormat format, nint width, nint height, nint planeIndex, out CVReturn errorCode)
{
if (imageBuffer == null)
throw new ArgumentNullException ("imageBuffer");
IntPtr texture;
errorCode = CVMetalTextureCacheCreateTextureFromImage (
allocator: IntPtr.Zero,
textureCache: handle, /* textureCache dict, one day we might add it */
sourceImage: imageBuffer.Handle,
textureAttr: IntPtr.Zero,
format: (nuint) (ulong) format,
width: width,
height: height,
planeIndex: planeIndex,
textureOut: out texture);
if (errorCode != 0)
return null;
return new CVMetalTexture (texture);
}
