public byte[] GetH264ParameterSet(nuint index, out nuint parameterSetCount, out int nalUnitHeaderLength, out CMFormatDescriptionError error)
{
if (Handle == IntPtr.Zero)
throw new ObjectDisposedException ("VideoFormatDescription");
IntPtr ret;
nuint parameterSetSizeOut;
error = CMVideoFormatDescriptionGetH264ParameterSetAtIndex (Handle, index, out ret, out parameterSetSizeOut, out parameterSetCount, out nalUnitHeaderLength);
if (error != CMFormatDescriptionError.None)
return null;
var arr = new byte[(int)parameterSetSizeOut];
Marshal.Copy (ret, arr, 0, (int)parameterSetSizeOut);
return arr;
}
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 static CMVideoFormatDescription FromH264ParameterSets(List<byte[]> parameterSets, int nalUnitHeaderLength, out CMFormatDescriptionError error)
{
if (parameterSets == null)
throw new ArgumentNullException ("parameterSets");
if (parameterSets.Count < 2)
throw new ArgumentException ("parameterSets must contain at least two elements");
if (nalUnitHeaderLength != 1 && nalUnitHeaderLength != 2 && nalUnitHeaderLength != 4)
throw new ArgumentOutOfRangeException ("nalUnitHeaderLength", "must be 1, 2 or 4");
var handles = new GCHandle [parameterSets.Count];
try {
var parameterSetSizes = new nuint [parameterSets.Count];
var parameterSetPtrs = new IntPtr [parameterSets.Count];
for (int i = 0; i < parameterSets.Count; i++) {
handles [i] = GCHandle.Alloc (parameterSets [i], GCHandleType.Pinned);
parameterSetPtrs [i] = handles [i].AddrOfPinnedObject ();
parameterSetSizes [i] = (nuint)parameterSets [i].Length;
}
IntPtr desc;
error = CMVideoFormatDescriptionCreateFromH264ParameterSets (IntPtr.Zero, (nuint)parameterSets.Count, parameterSetPtrs, parameterSetSizes, nalUnitHeaderLength, out desc);
if (error != CMFormatDescriptionError.None)
return null;
return new CMVideoFormatDescription (desc, true);
} finally {
for (int i = 0; i < parameterSets.Count; i++) {
if (handles [i].IsAllocated)
handles [i].Free ();
}
}
}
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 static CMFormatDescription Create(CMMediaType mediaType, uint mediaSubtype, out CMFormatDescriptionError error)
{
IntPtr handle;
error = CMFormatDescriptionCreate (IntPtr.Zero, mediaType, mediaSubtype, IntPtr.Zero, out handle);
if (error != CMFormatDescriptionError.None)
return null;
return Create (mediaType, handle, true);
}
public static CMFormatDescription Create(CMMediaType mediaType, uint mediaSubtype, out CMFormatDescriptionError error)
{
IntPtr handle;
error = CMFormatDescriptionCreate(IntPtr.Zero, mediaType, mediaSubtype, IntPtr.Zero, out handle);
if (error != CMFormatDescriptionError.None)
{
return(null);
}
return(Create(mediaType, handle, true));
}
public byte [] GetHevcParameterSet(nuint index, out nuint parameterSetCount, out int nalUnitHeaderLength, out CMFormatDescriptionError error)
{
if (Handle == IntPtr.Zero)
{
throw new ObjectDisposedException("VideoFormatDescription");
}
IntPtr ret;
nuint parameterSetSizeOut;
error = CMVideoFormatDescriptionGetHEVCParameterSetAtIndex(Handle, index, out ret, out parameterSetSizeOut, out parameterSetCount, out nalUnitHeaderLength);
if (error != CMFormatDescriptionError.None)
{
return(null);
}
var arr = new byte [(int)parameterSetSizeOut];
Marshal.Copy(ret, arr, 0, (int)parameterSetSizeOut);
return(arr);
}
public static CMVideoFormatDescription FromHevcParameterSets(List <byte[]> parameterSets, int nalUnitHeaderLength, NSDictionary extensions, out CMFormatDescriptionError error)
{
if (parameterSets == null)
{
throw new ArgumentNullException(nameof(parameterSets));
}
if (parameterSets.Count < 3)
{
throw new ArgumentException($"{nameof (parameterSets)} must contain at least three elements");
}
if (nalUnitHeaderLength != 1 && nalUnitHeaderLength != 2 && nalUnitHeaderLength != 4)
{
throw new ArgumentOutOfRangeException(nameof(nalUnitHeaderLength), "must be 1, 2 or 4");
}
var handles = new GCHandle [parameterSets.Count];
try {
var parameterSetSizes = new nuint [parameterSets.Count];
var parameterSetPtrs = new IntPtr [parameterSets.Count];
for (int i = 0; i < parameterSets.Count; i++)
{
handles [i] = GCHandle.Alloc(parameterSets [i], GCHandleType.Pinned); // This can't use unsafe code because we need to get the pointer for an unbound number of objects.
parameterSetPtrs [i] = handles [i].AddrOfPinnedObject();
parameterSetSizes [i] = (nuint)parameterSets [i].Length;
}
IntPtr desc;
error = CMVideoFormatDescriptionCreateFromHEVCParameterSets(IntPtr.Zero, (nuint)parameterSets.Count, parameterSetPtrs, parameterSetSizes, nalUnitHeaderLength, extensions.GetHandle(), out desc);
if (error != CMFormatDescriptionError.None || desc == IntPtr.Zero)
{
return(null);
}
return(new CMVideoFormatDescription(desc, true));
} finally {
for (int i = 0; i < handles.Length; i++)
{
if (handles [i].IsAllocated)
{
handles [i].Free();
}
}
}
}
public byte []? GetHevcParameterSet(nuint index, out nuint parameterSetCount, out int nalUnitHeaderLength, out CMFormatDescriptionError error)
{
IntPtr ret;
nuint parameterSetSizeOut;
error = CMVideoFormatDescriptionGetHEVCParameterSetAtIndex(GetCheckedHandle(), index, out ret, out parameterSetSizeOut, out parameterSetCount, out nalUnitHeaderLength);
if (error != CMFormatDescriptionError.None)
{
return(null);
}
var arr = new byte [(int)parameterSetSizeOut];
Marshal.Copy(ret, arr, 0, (int)parameterSetSizeOut);
return(arr);
}
public static CMVideoFormatDescription?CreateForImageBuffer(CVImageBuffer imageBuffer, out CMFormatDescriptionError error)
{
if (imageBuffer is null)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(imageBuffer));
}
IntPtr desc;
error = CMVideoFormatDescriptionCreateForImageBuffer(IntPtr.Zero, imageBuffer.Handle, out desc);
if (error != CMFormatDescriptionError.None)
{
return(null);
}
return(new CMVideoFormatDescription(desc, true));
}
