public unsafe CMSampleTimingInfo [] GetSampleTimingInfo(out OSStatus status)
{
nint count;
status = 0;
if (handle == IntPtr.Zero)
{
return(null);
}
if ((status = CMSampleBufferGetSampleTimingInfoArray(handle, 0, null, out count)) != 0)
{
return(null);
}
CMSampleTimingInfo [] pInfo = new CMSampleTimingInfo [count];
if (count == 0)
{
return(pInfo);
fixed(CMSampleTimingInfo *info = pInfo)
if ((status = CMSampleBufferGetSampleTimingInfoArray(handle, count, info, out count)) != 0)
{
return(null);
}
return(pInfo);
}
static extern /* OSStatus */ CMSampleBufferError CMSampleBufferCreateForImageBuffer(
/* CFAllocatorRef */ IntPtr allocator,
/* CVImageBufferRef */ IntPtr imageBuffer,
/* Boolean */ bool dataReady,
/* CMSampleBufferMakeDataReadyCallback */ IntPtr makeDataReadyCallback,
/* void* */ IntPtr makeDataReadyRefcon,
/* CMVideoFormatDescriptionRef */ IntPtr formatDescription,
/* const CMSampleTimingInfo* */ ref CMSampleTimingInfo sampleTiming,
/* CMSampleBufferRef* */ out IntPtr bufOut
);
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);
}
extern static /* OSStatus */ CMSampleBufferError CMSampleBufferCreateReadyWithImageBuffer ( /* CFAllocatorRef */ IntPtr allocator, /* CVImageBufferRef */ IntPtr imageBuffer, /* CMFormatDescriptionRef */ IntPtr formatDescription, // not null CMSampleTimingInfo[] sampleTiming, /* CMSampleBufferRef* */ out IntPtr sBufOut);
public static CMSampleBuffer CreateReady (CMBlockBuffer dataBuffer, CMFormatDescription formatDescription,
int samplesCount, CMSampleTimingInfo[] sampleTimingArray, nuint[] sampleSizeArray,
out CMSampleBufferError error)
{
if (dataBuffer == null)
throw new ArgumentNullException ("dataBuffer");
if (samplesCount < 0)
throw new ArgumentOutOfRangeException ("samplesCount");
IntPtr buffer;
var fdh = formatDescription == null ? IntPtr.Zero : formatDescription.Handle;
var timingCount = sampleTimingArray == null ? 0 : sampleTimingArray.Length;
var sizeCount = sampleSizeArray == null ? 0 : sampleSizeArray.Length;
error = CMSampleBufferCreateReady (IntPtr.Zero, dataBuffer.handle, fdh, samplesCount, timingCount,
sampleTimingArray, sizeCount, sampleSizeArray, out buffer);
if (error != CMSampleBufferError.None)
return null;
return new CMSampleBuffer (buffer, true);
}
extern static /* OSStatus */ CMSampleBufferError CMSampleBufferCreateReady ( /* CFAllocatorRef */ IntPtr allocator, /* CMBlockBufferRef */ IntPtr dataBuffer, /* CMFormatDescriptionRef */ IntPtr formatDescription, // can be null /* CMItemCount */ nint numSamples, // can be 0 /* CMItemCount */ nint numSampleTimingEntries, // 0, 1 or numSamples CMSampleTimingInfo[] sampleTimingArray, // can be null /* CMItemCount */ nint numSampleSizeEntries, // 0, 1 or numSamples /* size_t* */ nuint[] sampleSizeArray, // can be null /* CMSampleBufferRef* */ out IntPtr sBufOut);
public unsafe CMSampleTimingInfo [] GetSampleTimingInfo (out OSStatus status) {
nint count;
status = 0;
if (handle == IntPtr.Zero)
return null;
if ((status = CMSampleBufferGetSampleTimingInfoArray (handle, 0, null, out count)) != 0)
return null;
CMSampleTimingInfo [] pInfo = new CMSampleTimingInfo [count];
if (count == 0)
return pInfo;
fixed (CMSampleTimingInfo* info = pInfo)
if ((status = CMSampleBufferGetSampleTimingInfoArray (handle, count, info, out count)) != 0)
return null;
return pInfo;
}
unsafe static extern OSStatus CMSampleBufferGetSampleTimingInfoArray ( /* CMSampleBufferRef */ IntPtr sbuf, /* CMItemCount */ nint timingArrayEntries, CMSampleTimingInfo* timingArrayOut, /* CMItemCount* */ out nint timingArrayEntriesNeededOut );
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 extern /* OSStatus */ CMSampleBufferError CMSampleBufferCreateForImageBuffer ( /* CFAllocatorRef */ IntPtr allocator, /* CVImageBufferRef */ IntPtr imageBuffer, /* Boolean */ bool dataReady, /* CMSampleBufferMakeDataReadyCallback */ IntPtr makeDataReadyCallback, /* void* */ IntPtr makeDataReadyRefcon, /* CMVideoFormatDescriptionRef */ IntPtr formatDescription, /* const CMSampleTimingInfo* */ ref CMSampleTimingInfo sampleTiming, /* CMSampleBufferRef* */ out IntPtr bufOut );
public unsafe static CMSampleBuffer CreateWithNewTiming (CMSampleBuffer original, CMSampleTimingInfo [] timing, out OSStatus status)
{
if (original == null)
throw new ArgumentNullException ("original");
nint count = timing == null ? 0 : timing.Length;
IntPtr handle;
fixed (CMSampleTimingInfo *t = timing)
if ((status = CMSampleBufferCreateCopyWithNewTiming (IntPtr.Zero, original.Handle, count, t, out handle)) != 0)
return null;
return new CMSampleBuffer (handle, true);
}
public static CMSampleBuffer CreateWithNewTiming (CMSampleBuffer original, CMSampleTimingInfo [] timing)
{
OSStatus status;
return CreateWithNewTiming (original, timing, out status);
}
unsafe static extern OSStatus CMSampleBufferCreateCopyWithNewTiming ( /* CFAllocatorRef */ IntPtr allocator, /* CMSampleBufferRef */ IntPtr originalSBuf, /* CMItemCount */ nint numSampleTimingEntries, CMSampleTimingInfo* sampleTimingArray, /* CMSampleBufferRef* */ out IntPtr sBufCopyOut );
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));
}
