wmaudio.h

来自「ESS3890+SL原代码（1*16内存）」· C头文件 代码 · 共 288 行

/* Copyright 1997, ESS Technology, Inc.                                 */
/* SCCSID @(#)wmaudio.h	1.1 01/23/02 */

/* Based on DVD code version  	1.11 10/12/01 */
 
#ifndef _WMAUDIO_API_H_
#define _WMAUDIO_API_H_

#define PACKED

/* ...........................................................................
 *
 * Types and Constants
 * ===================
 */

#define CHECK_NONSDMI_LIC	1
#define CHECK_SDMI_LIC		2
#define CHECK_ALL_LICENSE	3

#define WMA_MAX_DATA_REQUESTED  128

#define W_TITLE		0
#define W_AUTHOR	1
#define W_COPYRIGHT	2
#define W_DESCRIPTION	3
#define W_RATING	4
#define STRING_SIZE	255

enum {
    ECD_STRING = 0,
    ECD_BINARY = 1,
    ECD_BOOL = 2,
    ECD_DWORD = 3,
    ECD_QWORD = 4,
    ECD_WORD = 5
};


/* 8-bit signed type  */
#ifndef _WMAU8_DEFINED
#define _WMAU8_DEFINED
typedef unsigned char tWMA_U8;
#endif /* _WMAU8_DEFINED */

/* 16-bit signed type  */
#ifndef _WMAI16_DEFINED
#define _WMAI16_DEFINED
typedef short tWMA_I16;
#endif /* _WMAI16_DEFINED */

/* 16-bit unsigned type  */
#ifndef _WMAU16_DEFINED
#define _WMAU16_DEFINED
typedef short tWMA_U16;
#endif /* _WMAU16_DEFINED */

/* 32-bit unsigned type  */
#ifndef _WMAU32_DEFINED
#define _WMAU32_DEFINED
typedef unsigned int tWMA_U32;
#endif /* _WMAU32_DEFINED */


#ifndef _QWORD_DEFINED
#define _QWORD_DEFINED
typedef PACKED struct tQWORD
{
    tWMA_U32   dwLo;
    tWMA_U32   dwHi;

}   QWORD;
#endif /* _QWORD_DEFINED */

/* Bool */
#ifndef _WMABool_DEFINED
#define _WMABool_DEFINED
typedef int tWMA_Bool;
#endif /* _WMABool_DEFINED */


#define DESC_NAME_MAX_LENGTH   64
typedef struct _MarkerEntry {
    QWORD   m_qOffset;
    QWORD   m_qtime;
    tWMA_U16    m_wEntryLen;
    tWMA_U32   m_dwSendTime;
    tWMA_U32   m_dwFlags;
    tWMA_U32   m_dwDescLen;
    tWMA_U16   m_pwDescName[DESC_NAME_MAX_LENGTH];
} MarkerEntry;

#define ECD_DISCRIPTOR_MAX	3
typedef struct _ECD_DESCRIPTOR {
    tWMA_U16         cbName;
    tWMA_U16     *pwszName;
    tWMA_U16         data_type;
    tWMA_U16         cbValue;
    union {
        tWMA_U8 *pbBinary;
        tWMA_U16 *pwszString;
        tWMA_Bool *pfBool;
        tWMA_U32 *pdwDword;
        tWMA_U16  *pwWord;
    } uValue;
} ECD_DESCRIPTOR;

typedef struct tagWMAExtendedContentDescription
{
    tWMA_U16 cDescriptors;             /* number of descriptors */
    ECD_DESCRIPTOR pDescriptors[ECD_DISCRIPTOR_MAX];  /* pointer to all the descriptors */
} tWMAExtendedContentDesc;

#define COMMAND_ENTRY_MAX	4

typedef struct _CommandEntry {
    tWMA_U32        time;
    tWMA_U16        type;
    tWMA_U8         *param;
} CommandEntry;

typedef struct tagWMFScriptCommand {
    tWMA_U16 num_commands;      /* number of script commands*/
    tWMA_U16 num_types;         /* number of types of commands*/
    tWMA_U8 *type_names;     /* command names, URL, FILENAME, CAPTION, etc*/
    int type_name_len;     /* length of the command name*/
    int command_param_len; /* length of command parameters*/
    CommandEntry commands[COMMAND_ENTRY_MAX]; /* pointer to all the commands*/
} WMFScriptCommand;

/* status */
#ifndef _WMAFILESTATUS_DEFINED
#define _WMAFILESTATUS_DEFINED
typedef enum tagWMAFileStatus
{
    cWMA_NoErr,                 /* -> always first entry */
                                /* remaining entry order is not guaranteed */
    cWMA_Failed,
    cWMA_BadArgument,
    cWMA_BadAsfHeader,
    cWMA_BadPacketHeader,
    cWMA_BrokenFrame,
    cWMA_NoMoreFrames,
    cWMA_BadSamplingRate,
    cWMA_BadNumberOfChannels,
    cWMA_BadVersionNumber,
    cWMA_BadWeightingMode,
    cWMA_BadPacketization,

    cWMA_BadDRMType,
    cWMA_DRMFailed,
    cWMA_DRMUnsupported,

    cWMA_DemoExpired,

    cWMA_BadState,
    cWMA_Internal,               /* really bad */
	cWMA_NoMoreDataThisTime
} tWMAFileStatus;
#endif /* _WMAFILESTATUS_DEFINED */

/* versions */
#ifndef _WMAFILEVERSION_DEFINED
#define _WMAFILEVERSION_DEFINED
typedef enum tagWMAFileVersion
{
    cWMA_V1 = 1,
    cWMA_V2 = 2

} tWMAFileVersion;
#endif /* _WMAFILEVERSION_DEFINED */

/* sample rates */
#ifndef _WMAFILESAMPLERATE_DEFINED
#define _WMAFILESAMPLERATE_DEFINED
typedef enum tagWMAFileSampleRate
{
    cWMA_SR_48kHz,
    cWMA_SR_44_1kHz,
    cWMA_SR_32kHz,
    cWMA_SR_22_05kHz,
    cWMA_SR_16kHz,
    cWMA_SR_11_025kHz,
    cWMA_SR_08kHz
} tWMAFileSampleRate;
#endif /* _WMAFILESAMPLERATE_DEFINED */

/* channels */
#ifndef _WMAFILECHANNELS_DEFINED
#define _WMAFILECHANNELS_DEFINED
typedef enum tagWMAFileChannels
{
    cWMA_C_Mono = 1,
    cWMA_C_Stereo = 2

} tWMAFileChannels;
#endif /* _WMAFILECHANNELS_DEFINED */


/* ...........................................................................
 *
 * Structures
 * ==========
 */

/* header */
#ifndef _WMAFILEHEADER_DEFINED
#define _WMAFILEHEADER_DEFINED
typedef PACKED struct tagWMAFileHeader
{
    tWMAFileVersion version;         /* version of the codec */
    tWMAFileSampleRate sample_rate;  /* sampling rate */
    tWMAFileChannels num_channels;   /* number of audio channels */
    tWMA_U32 duration;               /* of the file in milliseconds */
    tWMA_U32 packet_size;            /* size of an ASF packet */
    tWMA_U32 first_packet_offset;    /* byte offset to the first ASF packet */
    tWMA_U32 last_packet_offset;     /* byte offset to the last ASF packet */

    tWMA_U32 has_DRM;                /* does it have DRM encryption? */
 
    tWMA_U32 LicenseLength;          /* License Length in the header */

    tWMA_U32 bitrate;                /* bit-rate of the WMA bitstream */

    /* HongCho: what else? */
} tWMAFileHeader;
#endif /* _WMAFILEHEADER_DEFINED */


/* content description */
#ifndef _WMAFILECONTDESC_DEFINED
#define _WMAFILECONTDESC_DEFINED
#define	CONTENT_STRING	128
typedef PACKED struct tagWMAFileContDesc
{
    /* *_len: as [in], they specify how large the corresponding
     *        buffers below are.
     *        as [out], they specify how large the returned
     *        buffers actually are.
     */

    tWMA_U16 title_len;
    tWMA_U16 author_len;
    tWMA_U16 copyright_len;
    tWMA_U16 description_len;   /* rarely used */
    tWMA_U16 rating_len;        /* rarely used */

    /* these are two-byte strings
     *   for ASCII-type character set, to convert these
     *   into a single-byte characters, simply skip
     *   over every other bytes.
     */

    unsigned char pTitle[CONTENT_STRING+1];
    unsigned char pAuthor[CONTENT_STRING+1];
    unsigned char pCopyright[CONTENT_STRING+1];
    unsigned char pDescription[CONTENT_STRING+1];
    unsigned char pRating[CONTENT_STRING+1];

} tWMAFileContDesc;
#endif /* _WMAFILECONTDESC_DEFINED */

/* license params */
#ifndef _WMAFILELICPARAMS_DEFINED
#define _WMAFILELICPARAMS_DEFINED
typedef PACKED struct tagWMAFileLicParams
{
    unsigned char *pPMID;       /* portable media id */
    tWMA_U32 cbPMID;            /* length of the pPMID buffer */

} tWMAFileLicParams;
#endif /* _WMAFILELICPARAMS_DEFINED */


typedef void * tHWMAFileState;

/* another internal state */
#ifndef _WMAFILEHDRSTATE_DEFINED
#define _WMAFILEHDRSTATE_DEFINED
typedef PACKED struct tagWMAFileHdrState
{
    unsigned char internal[192];

} tWMAFileHdrState;
#endif /* _WMAFILEHDRSTATE_DEFINED */

#endif /* _WMAUDIO_API_H_ */