extern static unsafe VTStatus VTCompressionSessionEncodeFrameWithOutputHandler(
/* VTCompressionSessionRef */ IntPtr session,
/* CVImageBufferRef */ IntPtr imageBuffer,
/* CMTime */ CMTime presentation,
/* CMTime */ CMTime duration, // can ve CMTime.Invalid
/* CFDictionaryRef */ IntPtr dict, // can be null, undocumented options
/* VTEncodeInfoFlags */ out VTEncodeInfoFlags flags,
/* VTCompressionOutputHandler */ BlockLiteral *outputHandler);
extern static VTStatus VTCompressionSessionEncodeFrame(
/* VTCompressionSessionRef */ IntPtr session,
/* CVImageBufferRef */ IntPtr imageBuffer,
/* CMTime */ CMTime presentation,
/* CMTime */ CMTime duration, // can ve CMTime.Invalid
/* CFDictionaryRef */ IntPtr dict, // can be null, undocumented options
/* void* */ IntPtr sourceFrame,
/* VTEncodeInfoFlags */ out VTEncodeInfoFlags flags);
static void CompressionCallback (IntPtr outputCallbackClosure, IntPtr sourceFrame, VTStatus status, VTEncodeInfoFlags infoFlags, IntPtr cmSampleBufferPtr)
{
var gch = GCHandle.FromIntPtr (outputCallbackClosure);
var func = (VTCompressionOutputCallback) gch.Target;
using (var sampleBuffer = new CMSampleBuffer (cmSampleBufferPtr)) {
func (sourceFrame, status, infoFlags, sampleBuffer);
}
}
static unsafe void VTCompressionOutputHandlerTrampoline(BlockLiteral *block,
VTStatus status, VTEncodeInfoFlags infoFlags, IntPtr sampleBuffer)
{
var del = (VTCompressionOutputHandler)(block->Target);
if (del != null)
{
del(status, infoFlags, new CMSampleBuffer(sampleBuffer));
}
}
static void CompressionCallback(IntPtr outputCallbackClosure, IntPtr sourceFrame, VTStatus status, VTEncodeInfoFlags infoFlags, IntPtr cmSampleBufferPtr)
{
CompressionCallback(outputCallbackClosure, sourceFrame, status, infoFlags, cmSampleBufferPtr, true);
}
static void CompressionCallback(IntPtr outputCallbackClosure, IntPtr sourceFrame, VTStatus status, VTEncodeInfoFlags infoFlags, IntPtr cmSampleBufferPtr, bool owns)
{
var gch = GCHandle.FromIntPtr(outputCallbackClosure);
var func = (VTCompressionOutputCallback)gch.Target;
if (cmSampleBufferPtr == IntPtr.Zero)
{
func(sourceFrame, status, infoFlags, null);
}
else
{
using (var sampleBuffer = new CMSampleBuffer(cmSampleBufferPtr, owns: owns))
func(sourceFrame, status, infoFlags, sampleBuffer);
}
}
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.SetupBlockUnsafe(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 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 ();
}
}
}
static unsafe void VTCompressionOutputHandlerTrampoline (BlockLiteral *block,
VTStatus status, VTEncodeInfoFlags infoFlags, IntPtr sampleBuffer)
{
var del = (VTCompressionOutputHandler)(block->Target);
if (del != null)
del (status, infoFlags, new CMSampleBuffer (sampleBuffer));
}
extern static unsafe VTStatus VTCompressionSessionEncodeFrameWithOutputHandler ( /* VTCompressionSessionRef */ IntPtr session, /* CVImageBufferRef */ IntPtr imageBuffer, /* CMTime */ CMTime presentation, /* CMTime */ CMTime duration, // can ve CMTime.Invalid /* CFDictionaryRef */ IntPtr dict, // can be null, undocumented options /* VTEncodeInfoFlags */ out VTEncodeInfoFlags flags, /* VTCompressionOutputHandler */ BlockLiteral *outputHandler);
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);
}
extern static VTStatus VTCompressionSessionEncodeFrame ( /* VTCompressionSessionRef */ IntPtr session, /* CVImageBufferRef */ IntPtr imageBuffer, /* CMTime */ CMTime presentation, /* CMTime */ CMTime duration, // can ve CMTime.Invalid /* CFDictionaryRef */ IntPtr dict, // can be null, undocumented options /* void* */ IntPtr sourceFrame, /* VTEncodeInfoFlags */ out VTEncodeInfoFlags flags);
static void CompressionCallback(IntPtr outputCallbackClosure, IntPtr sourceFrame, VTStatus status, VTEncodeInfoFlags infoFlags, IntPtr cmSampleBufferPtr)
{
var gch = GCHandle.FromIntPtr(outputCallbackClosure);
var func = (VTCompressionOutputCallback)gch.Target;
using (var sampleBuffer = new CMSampleBuffer(cmSampleBufferPtr)) {
func(sourceFrame, status, infoFlags, sampleBuffer);
}
}
