wma_fixed_header.h

本程序为ST公司开发的源代码

/* internal structure for the ASF header parsing */
typedef struct tagWMAFileHdrStateInternal
{
    U64     currPacketOffset;     /* not just for packets */
    U64     nextPacketOffset;

    /* ASF header */

    DWORD   cbHeader;
    DWORD   cbPacketSize;
    DWORD   cbAudioSize;
    DWORD   cPackets;
    DWORD   msDuration;
    DWORD   msPreroll;
    U64     cbFirstPacketOffset;
    U64     cbLastPacketOffset;
    DWORD   dwFilePropertiesFlags;

    /* audio prop */
    WORD    nVersion;
    WORD    wFormatTag;
    DWORD   nSamplesPerSec;
    DWORD   nAvgBytesPerSec;
    DWORD   nBlockAlign;
    WORD    nChannels;
    DWORD   nSamplesPerBlock;
    WORD    nEncodeOpt;
    
    // Added in V9
    WORD    wPCMFormatTag;
    WORD    wBitsPerSample; // container size
    WORD    wValidBitsPerSample; // actual valid data depth in the decoded stream
    DWORD   dwChannelMask;
    GUID    SubFormat;
    WORD    wOriginalBitDepth; // actual valid data depth in the original source (informational)
    
    /* DRM */
    
    BYTE    pbSecretData[32];
    DWORD   cbSecretData;
    BYTE    pbType[16];
    BYTE    pbKeyID[32];

#ifdef WMDRM_PORTABLE
    WORD cbCEncExData;
    BYTE *pbCEncExData;
#endif

    /* Content Description */
	tWMAFileContDesc		*m_pDesc;

    /* Extended Content Description */

    tWMAExtendedContentDesc *m_pECDesc;

    /* Marker */
    DWORD   m_dwMarkerNum;
    MarkerEntry *m_pMarker;

    /* License Store */
    DWORD   m_dwLicenseLen;
    BYTE   *m_pLicData;

#ifndef WMAAPI_NO_DRM_STREAM
    BYTE    bAudioStreamNum;
    BYTE    bDRMAuxStreamNum;
#endif
// Members added by Amit 
    WORD    wAudioStreamId;
//O.K. no metadata    WMA_MetaDataEntry *ptMetaDataEntry;

    // Members added by Naveen for MBR support
    WORD    wTargetAudioStreamNumber;
    WORD    cAudioStreams;

#ifdef WMDRM_NETWORK
    WORD cPEData;
    WMA_StreamPayloadExtensionData PEData[ WMA_MAX_PAYLOAD_EXTENSION_STREAMS ];
#endif
} tWMAFileHdrStateInternal;