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);
}
static VTDecompressionSession Create (VTDecompressionOutputCallback outputCallback,
CMVideoFormatDescription formatDescription,
VTVideoDecoderSpecification decoderSpecification, // hardware acceleration is default behavior on iOS. no opt-in required.
NSDictionary destinationImageBufferAttributes,
DecompressionOutputCallback cback)
{
if (formatDescription == null)
throw new ArgumentNullException ("formatDescription");
var callbackHandle = GCHandle.Alloc (outputCallback);
var callbackStruct = new VTDecompressionOutputCallbackRecord () {
Proc = cback,
DecompressionOutputRefCon = GCHandle.ToIntPtr (callbackHandle)
};
IntPtr ret;
var result = VTDecompressionSessionCreate (IntPtr.Zero, formatDescription.Handle,
decoderSpecification != null ? decoderSpecification.Dictionary.Handle : IntPtr.Zero,
destinationImageBufferAttributes != null ? destinationImageBufferAttributes.Handle : IntPtr.Zero,
ref callbackStruct,
out ret);
if (result == VTStatus.Ok && ret != IntPtr.Zero)
return new VTDecompressionSession (ret, true) {
callbackHandle = callbackHandle
};
callbackHandle.Free ();
return null;
}
public static VTDecompressionSession Create (CMVideoFormatDescription formatDescription,
VTVideoDecoderSpecification decoderSpecification = null, // hardware acceleration is default behavior on iOS. no opt-in required.
NSDictionary destinationImageBufferAttributes = null) // Undocumented options, probably always null
{
if (formatDescription == null)
throw new ArgumentNullException ("formatDescription");
var callbackStruct = default (VTDecompressionOutputCallbackRecord);
IntPtr ret;
var result = VTDecompressionSessionCreate (IntPtr.Zero, formatDescription.Handle,
decoderSpecification != null ? decoderSpecification.Dictionary.Handle : IntPtr.Zero,
destinationImageBufferAttributes != null ? destinationImageBufferAttributes.Handle : IntPtr.Zero,
ref callbackStruct,
out ret);
return result == VTStatus.Ok && ret != IntPtr.Zero
? new VTDecompressionSession (ret, true)
: null;
}
public static VTDecompressionSession Create (VTDecompressionOutputCallback outputCallback,
CMVideoFormatDescription formatDescription,
VTVideoDecoderSpecification decoderSpecification, // hardware acceleration is default behavior on iOS. no opt-in required.
CVPixelBufferAttributes destinationImageBufferAttributes)
{
return Create (outputCallback, formatDescription, decoderSpecification, destinationImageBufferAttributes == null ? null : destinationImageBufferAttributes.Dictionary, static_newDecompressionOutputCallback);
}
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));
}