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WMA_ASF.h：源码内容
							
/****************************************************************************************
 *  Copyright (c) 2000 ZORAN Corporation, All Rights Reserved
 *  THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF ZORAN CORPORATION
 *
 *  File: $Workfile: WMA_ASF.h $             
 *
 * Description:
 * ============
 * Microsoft(r) Advanced-Systems Format for Windows(r) Media Audio
 *
 * Log:
 * ====
 ****************************************************************************************
 * Updates:
 ****************************************************************************************
 * $Log: /I76/I76_Common/I76_Reference/Playcore/Nav_Clips/WMA_ASF.h $
 * 
 * 2     11/10/03 11:33a Leonh
 * Get Sampling rate for WMA
 * 
 * 1     10/30/02 18:06 Rond
 * 
 * 1     11/09/02 15:49 Atai
 * 
 * 2     22/08/02 16:05 Nirm
 * - First revision.
 * 
 * 1     21/08/02 16:48 Nirm
 ****************************************************************************************/
#include "Config.h"		// Global Configuration - do not remove!
#ifndef __WMA_ASF_H_
#define __WMA_ASF_H_
#include "IncludeSysDefs.h"
// NOTE: All of the structures MUST be packed, since they represent
//		 data-structures resident on the Medium!
#pragma pack(1)
/////////////////////////////////////////////////////////////////////////////
// Constants and Enumerations
#define GUID_SIZE	16
#define OBJECT_HEADER_SIZE 24 // THE GUID AND OBJECT SIZE
#define TYPE_SPECIFIC_DATA_ADD 78//offset in audio stream properties object
#define HEADER_OBJECT_GUID	
	{ 0x75b22630L, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c } }
#define PROPERTIES_OBJECT_GUID	
	{ 0x8cabdca1L, 0xa947, 0x11cf, { 0x8e, 0xe4, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 } }
#define STREAM_PROPERTIES_OBJECT_GUID 
	{ 0xb7dc0791L, 0xa9b7, 0x11cf, { 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 } }
#define AUDIO_STREAM_PROPERTIES_GUID 
	{ 0xf8699e40L, 0x5b4d, 0x11cf, { 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b } }
#define CONTENT_DESCRIPTION_OBJECT_GUID 
	{ 0x75b22633L, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c } }
#define FORMAT_TAG_WMA	0x0161
#define	FORMAT_TAG_GSM1	0x7A21
#define FOMRAT_TAG_GSM2	0x7A22
/////////////////////////////////////////////////////////////////////////////
// Macros
#ifdef MOTOROLA
#define LE_QWORD_LOW(qwLittleEndian) (DWORD)(qwLittleEndian[1])
#define LE_QWORD_HIGH(qwLittleEndian) (DWORD)(qwLittleEndian[0])
#else
#define LE_QWORD_LOW(qwLittleEndian) (DWORD)(qwLittleEndian[0])
#define LE_QWORD_HIGH(qwLittleEndian) (DWORD)(qwLittleEndian[1])
#endif	//MOTOROLA
/////////////////////////////////////////////////////////////////////////////
// Common Structures and Types
typedef DWORD	QWORD[2];
typedef UINT16	WCHAR;
typedef struct GUID_TAG {
	UINT32 iInt;
	UINT16 uShort1;
	UINT16 uShort2;
	BYTE   aBytes[8];
} GUID;
// Base for all Objects
struct ObjectBase {
	GUID  guid;
	QWORD cbSize;
};
// Header-Object (ASF-Spec 2.2.1.1)
typedef struct HeaderObject_TAG {
	GUID  guid;
	QWORD cbSize;
	DWORD dwHeadersCnt;
	WORD  wReserved;
} HeaderObject;
// Properties-Object (ASF-Spec 2.2.2.1)
typedef struct PropertiesObject_TAG {
//	GUID  guid;
//	QWORD cbSize;
	GUID  MultimediaSID;
	QWORD cbTotalSize;
	QWORD ulCreated;
	QWORD ulInterleavePacketsCnt;
	QWORD ulPlayDuration;
	QWORD qwSendDuration;
	QWORD ulPreroll;
	DWORD dwFlags;
	DWORD cbMinInterleavePacketSize;
	DWORD cbMaxInterleavePacketSize; // shall always be equal to min_interleave_packet_size
	DWORD ulMaximumBitrate;
} PropertiesObject;
#define PROPERTIES_OBJECT_MAX_PKT_SIZE_OFFSET	(sizeof(PropertiesObject) - (2*sizeof(DWORD)) + sizeof(GUID) + sizeof(QWORD))
// Stream Properties Object (ASF-Spec 2.2.3.1)
typedef struct StreamPropertiesObject_TAG {
//	GUID  guid;
//	QWORD cbSize;
	GUID  idStreamType;
	GUID  idErrorCorrectionType;
	QWORD ulOffset;
	DWORD ulTypeSpecificLength;
	DWORD reserved1;
	WORD wflag;// wStreamNumber;
	DWORD reserved2;
//	BYTE  aTypeSpecificData[];
} StreamPropertiesObject;
// Audio Type-Specific Data (ASF-Spec 2.2.3.3.2)
typedef struct WAVEFORMATEX_TAG {
	WORD  wFormatTag;
	WORD  nChannels;
	DWORD nSamplesPerSec;
	DWORD nAvgBytesPerSec;
	WORD  nBlockAlign;
	WORD  wBitsPerSample;
	WORD  cbSize;
} WAVEFORMATEX;
// Content-Description Object (ASF-Spec 2.2.4.1)
typedef struct ContentDescriptionObject_TAG {
	GUID  guid;
	QWORD cbSize;
	WORD  uTitleLength;
	WORD  uAuthorLength;
	WORD  uCopyrightLength;
	WORD  uDescriptionLength;
	WORD  uRatingLength;
	char  szTitle[];
	char  szAuthor[];
	char  szCopyright[];
	char  szDescription[];
	char  szRating[];
} ContentDescriptionObject;
// Data Section Introduction Object (ASF-Spec 2.3.1)
typedef struct DataSectionIntroductionObject_TAG {
	BYTE aReserved[50];
} DataSectionIntroductionObject;
#pragma pack()
#endif //__WMA_ASF_H_

						