/* * * Copyright (c) Sigma Designs, Inc. 2006. All rights reserved. * *//**   @file mp4descriptors.h   @brief IOD parsing for MP4 streams	   @author Yifan Liu   @ingroup dccsamplecode*/#ifndef __MP4DESCRIPTORS_H__#define __MP4DESCRIPTORS_H__typedef void AnyDescriptor;struct MP4_DecoderConfigDescriptor {	RMuint8 tag;     /* 8 bits, default to 0x04 */	RMuint8 size;    /* 8 bits */	RMuint8 objectTypeIndication;  /* 8 bits */	RMuint8 streamType;  /* 6 bits */	RMuint8 upstream;   /* 1 bit */	/* 1 bit reserved */	RMuint32 bufferSizeDB;   /* 24 bits */	RMuint32 maxBitrate;     /* 32 bits */	RMuint32 avgBitrate;     /* 32 bits */};struct MP4_SLConfigDescriptor {	RMuint8 tag;     /* 8 bits, default to 0x06 */	RMuint8 size;    /* 8 bits */	RMuint8 predefined;  /* 8 bits default 0*/		RMuint8 useAccessUnitStartFlag;  /* 1 bit */	RMuint8 useAccessUnitEndFlag;    /* 1 bit */	RMuint8 useRandomAccessPointFlag;/* 1 bit */	RMuint8 hasRandomAccessUnitsOnlyFlag; /* 1 bit */		RMuint8 usePaddingFlag;          /* 1 bit */	RMuint8 useTimeStampsFlag;       /* 1 bit */	RMuint8 useIdleFlag;             /* 1 bit */	RMuint8 durationFlag;            /* 1 bit */		RMuint32 timeStampResolution;    /* 32 bits */	RMuint32 OCRResolution;          /* 32 bits */		RMuint8 timeStampLength;         /* 8 bits */	RMuint8 OCRLength;               /* 8 bits */	RMuint8 AU_Length;               /* 8 bits */	RMuint8 instantBitrateLength;    /* 8 bits */		RMuint8 degradationPriorityLength; /* 4 bits */	RMuint8 AU_seqNumLength;           /* 5 bits */	RMuint8 packet_SeqNumLength;       /* 5 bits */	/* 2 bits reserved deault to 0b11 */		RMuint32 timeScale;                /* 32 bits */	RMuint16 accessUnitDuration;       /* 16 bits */	RMuint16 compositionUnitDuration;  /* 16 bits */};struct MP4_ES_Descriptor {	RMuint8 tag;     /* 8 bits, default to 0x03 */	RMuint8 size;    /* 8 bits */	RMuint16 ES_id;  /* 16 bits */	RMuint8 streamDependentFlag; /* 1 bit */	RMuint8 URL_flag;            /* 1 bit */	RMuint8 OCRstreamFlag;       /* 1 bit */	RMuint8 streamPriority;      /* 5 bits */	RMuint16 dependsOn_ES_id;    /* 16 bits if streamDependentFlag */	RMuint8 URLlength;           /* 8 bits  if url_flag */	RMuint8 URLstring[256];      /* 8 bits * n if url_flag */	RMuint16 OCR_ES_id;          /* 16 bits if OCRstreamFlag */		AnyDescriptor * esDescr[256];	RMuint8 esDescrNum;};struct MP4_IOD {	RMuint8 tag;     /* 8 bits, default to 0x02 */	RMuint8 size;    /* 8 bits, spec says 16 bits */	RMuint16 id;     /* 10 bits */	RMuint8 URL_flag;/* 1 bit */	RMuint8 includeInlineProfiles;  /* 1 bit */	/* 4 bits reserved default to 0b1111 */	RMuint8 profileLevelIndication1; /* 8 bits */	RMuint8 sceneProfileLevelIndication; /* 8 bits   0x01 */	RMuint8 audioProfileLevelIndication; /* 8 bits   0x0c*/	RMuint8 visualProfileLevelIndication;/* 8 bits */	RMuint8 graphicsProfileLevelIndication; /* 8 bits 0x04*/		AnyDescriptor * esDescr[256];	RMuint8 esDescrNum;};extern AnyDescriptor * CreateDescriptor( RMuint8 * p, RMuint16* count );extern void DestoryDescriptor( AnyDescriptor * des );extern struct MP4_IOD * CreateIODDescriptor(RMuint8 *p, RMuint16 * count );extern void DestoryIODDescriptor(struct MP4_IOD * iod);extern struct MP4_ES_Descriptor * CreateESDescriptor(RMuint8 *p, RMuint16 * count );extern void DestoryESDescriptor(struct MP4_ES_Descriptor * des);extern struct MP4_DecoderConfigDescriptor * CreateDecoderConfigDescriptor(RMuint8 *p, RMuint16 * count);extern void DestoryDecoderConfigDescriptor(struct MP4_DecoderConfigDescriptor * des);extern struct MP4_SLConfigDescriptor * CreateSLConfigDescriptor(RMuint8 *p, RMuint16 * count);extern void DestorySLConfigDescriptor(struct MP4_SLConfigDescriptor * des);extern void ParseIODDescriptor(RMuint8 *p, RMuint16 * bifs, RMuint16 * od  );#endif // __MP4DESCRIPTORS_H__