// Copyright (c) 1997  Microsoft Corporation.  All Rights Reserved.
import "unknwn.idl";
import "mmstream.idl";

cpp_quote("//")
cpp_quote("//	The following declarations within the 'if 0' block are dummy typedefs used to make")
cpp_quote("//	the ddstream.idl file build.  The actual definitions are contained in DDRAW.H")
cpp_quote("//")
cpp_quote("#if 0")
typedef struct tWAVEFORMATEX WAVEFORMATEX;
cpp_quote ("#endif")

interface IAudioMediaStream;
interface IAudioStreamSample;
interface IMemoryData;
interface IAudioData;

//  IAudioMediaStream


[
object,
local,
uuid(f7537560-a3be-11d0-8212-00c04fc32c45),
pointer_default(unique)
]
interface IAudioMediaStream : IMediaStream
{

	HRESULT GetFormat(
		[out] [optional] WAVEFORMATEX *pWaveFormatCurrent
	);

	HRESULT SetFormat(
		[in] const WAVEFORMATEX *lpWaveFormat);

	HRESULT CreateSample(
		[in] IAudioData *pAudioData,
		[in] DWORD dwFlags,
		[out] IAudioStreamSample **ppSample
	);
}

[
object,
local,
uuid(345fee00-aba5-11d0-8212-00c04fc32c45),
pointer_default(unique)
]
interface IAudioStreamSample : IStreamSample
{
	HRESULT GetAudioData(
	    [out] IAudioData **ppAudio
	);
}


[
object,
local,
uuid(327fc560-af60-11d0-8212-00c04fc32c45),
pointer_default(unique)
]
interface IMemoryData : IUnknown
{
	HRESULT SetBuffer(
		[in] DWORD cbSize,
		[in] BYTE *pbData,
		[in] DWORD dwFlags
	);

	HRESULT GetInfo(
	    [out] DWORD *pdwLength,
	    [out] BYTE **ppbData,
	    [out] DWORD *pcbActualData
	);
	HRESULT SetActual(
	    [in] DWORD cbDataValid
	);
}

[
object,
local,
uuid(54c719c0-af60-11d0-8212-00c04fc32c45),
pointer_default(unique)
]
interface IAudioData : IMemoryData
{
	HRESULT GetFormat(
		[out] [optional] WAVEFORMATEX *pWaveFormatCurrent
	);

	HRESULT SetFormat(
		[in] const WAVEFORMATEX *lpWaveFormat
	);
}