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//
// AudioMediaType.idl
//
//
// Description:
//
// IAudioMediaType definition
//
cpp_quote("#include <winapifamily.h>")
#pragma region Desktop Family
cpp_quote("#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)")
import "oaidl.idl";
import "ocidl.idl";
//
// Include this for marshallable definition of WAVEFORMATEX
//
import "mmreg.h";
//
// UNCOMPRESSEDAUDIOFORMAT
//
cpp_quote( "#if !defined( _UNCOMPRESSEDAUDIOFORMAT_ )" )
cpp_quote( "#define _UNCOMPRESSEDAUDIOFORMAT_" )
typedef struct _UNCOMPRESSEDAUDIOFORMAT
{
GUID guidFormatType;
DWORD dwSamplesPerFrame;
DWORD dwBytesPerSampleContainer;
DWORD dwValidBitsPerSample;
FLOAT fFramesPerSecond;
DWORD dwChannelMask;
} UNCOMPRESSEDAUDIOFORMAT;
cpp_quote( "#endif" )
cpp_quote( "" )
//////////////////////////////////////////////////////////////////////////////
[
object,
uuid(4E997F73-B71F-4798-873B-ED7DFCF15B4D),
local
]
interface IAudioMediaType : IUnknown
{
HRESULT IsCompressedFormat(
[out, annotation("_Out_")] BOOL* pfCompressed
);
HRESULT IsEqual(
[in, annotation("_In_")] IAudioMediaType* pIAudioType,
[out, annotation("_Out_")] DWORD* pdwFlags
);
const WAVEFORMATEX* GetAudioFormat();
HRESULT GetUncompressedAudioFormat(
[out, annotation("_Out_")] UNCOMPRESSEDAUDIOFORMAT* pUncompressedAudioFormat
);
};
cpp_quote("//")
cpp_quote("// CreateAudioMediaType")
cpp_quote("//")
cpp_quote("STDAPI CreateAudioMediaType(")
cpp_quote(" const WAVEFORMATEX* pAudioFormat,")
cpp_quote(" UINT32 cbAudioFormatSize,")
cpp_quote(" IAudioMediaType** ppIAudioMediaType")
cpp_quote(" );")
cpp_quote("//")
cpp_quote("// CreateAudioMediaTypeFromUncompressedAudioFormat")
cpp_quote("//")
cpp_quote("STDAPI CreateAudioMediaTypeFromUncompressedAudioFormat(")
cpp_quote(" const UNCOMPRESSEDAUDIOFORMAT* pUncompressedAudioFormat,")
cpp_quote(" IAudioMediaType** ppIAudioMediaType")
cpp_quote(" );")
//
// IsEqual flags
//
// subtype match = format types match = iscompressed for both matches
// format_data match = format blocks match exactly
cpp_quote( "#define AUDIOMEDIATYPE_EQUAL_FORMAT_TYPES 0x00000002" )
cpp_quote( "#define AUDIOMEDIATYPE_EQUAL_FORMAT_DATA 0x00000004" )
cpp_quote( "#define AUDIOMEDIATYPE_EQUAL_FORMAT_USER_DATA 0x00000008" )
cpp_quote( "" )
cpp_quote("#endif /* WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) */")
#pragma endregion