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));
}
static CMFormatDescription Create(CMMediaType type, IntPtr handle, bool owns)
{
switch (type)
{
case CMMediaType.Video:
return(new CMVideoFormatDescription(handle, owns));
case CMMediaType.Audio:
return(new CMAudioFormatDescription(handle, owns));
default:
return(new CMFormatDescription(handle, owns));
}
}
static extern IntPtr MTCopyLocalizedNameForMediaType(
CMMediaType mediaType);
extern static /* OSStatus */ CMFormatDescriptionError CMFormatDescriptionCreate(/* CFAllocatorRef */ IntPtr allocator, CMMediaType mediaType, /* FourCharCode */ uint mediaSubtype, /* CFDictionaryRef */ IntPtr extensions, /* CMFormatDescriptionRef* */ out IntPtr descOut);
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);
}
static CMFormatDescription Create(CMMediaType type, IntPtr handle, bool owns)
{
switch (type) {
case CMMediaType.Video:
return new CMVideoFormatDescription (handle, owns);
case CMMediaType.Audio:
return new CMAudioFormatDescription (handle, owns);
default:
return new CMFormatDescription (handle, owns);
}
}
extern static CMFormatDescriptionError CMFormatDescriptionCreate(IntPtr allocator, CMMediaType mediaType, uint mediaSubtype, IntPtr extensions, out IntPtr handle);
static extern CMFormatDescriptionError CMFormatDescriptionCreate(/* CFAllocatorRef */ IntPtr allocator, CMMediaType mediaType, /* FourCharCode */ uint mediaSubtype, /* CFDictionaryRef */ IntPtr extensions, /* CMFormatDescriptionRef* */ out IntPtr descOut);
static public string GetLocalizedName(this CMMediaType mediaType, uint mediaSubType)
{
return(CFString.FromHandle(MTCopyLocalizedNameForMediaSubType(mediaType, mediaSubType), releaseHandle: true));
}
static extern /* CFStringRef CM_NULLABLE */ IntPtr MTCopyLocalizedNameForMediaSubType(
CMMediaType mediaType, uint mediaSubType);
static public string GetLocalizedName(this CMMediaType mediaType)
{
return(CFString.FetchString(MTCopyLocalizedNameForMediaType(mediaType), releaseHandle: true));
}
static extern CMFormatDescriptionError CMFormatDescriptionCreate(IntPtr allocator, CMMediaType mediaType, uint mediaSubtype, IntPtr extensions, out IntPtr handle);
static public string GetLocalizedName(this CMMediaType mediaType, uint mediaSubType)
{
return(CFString.FetchString(MTCopyLocalizedNameForMediaSubType(mediaType, mediaSubType)));
}
