vopsedec.no-opt

au1200 linux2.6.11 硬件解码mae驱动和maiplayer播放器源码

/*************************************************************************

This software module was originally developed by 

	Ming-Chieh Lee ([e-mail]), Microsoft Corporation
	Wei-ge Chen ([e-mail]), Microsoft Corporation
	Bruce Lin ([e-mail]), Microsoft Corporation
	Chuang Gu ([e-mail]), Microsoft Corporation
	(date: March, 1996)

and edited by
	Yoshihiro Kikuchi (TOSHIBA CORPORATION)
	Takeshi Nagai (TOSHIBA CORPORATION)
	Toshiaki Watanabe (TOSHIBA CORPORATION)
	Noboru Yamaguchi (TOSHIBA CORPORATION)

and also edited by
	Dick van Smirren ([e-mail]), KPN Research
	Cor Quist ([e-mail]), KPN Research
	(date: July, 1998)

and also edited by
    Fujitsu Laboratories Ltd. (contact: Eishi Morimatsu)

and also edited by 
	Takefumi Nagumo ([e-mail]), Sony Corporation
    Sehoon Son ([e-mail]) Samsung AIT

in the course of development of the MPEG-4 Video (ISO/IEC 14496-2). 
This software module is an implementation of a part of one or more MPEG-4 Video tools 
as specified by the MPEG-4 Video. 
ISO/IEC gives users of the MPEG-4 Video free license to this software module or modifications 
thereof for use in hardware or software products claiming conformance to the MPEG-4 Video. 
Those intending to use this software module in hardware or software products are advised that its use may infringe existing patents. 
The original developer of this software module and his/her company, 
the subsequent editors and their companies, 
and ISO/IEC have no liability for use of this software module or modifications thereof in an implementation. 
Copyright is not released for non MPEG-4 Video conforming products. 
Microsoft retains full right to use the code for his/her own purpose, 
assign or donate the code to a third party and to inhibit third parties from using the code for non <MPEG standard> conforming products. 
This copyright notice must be included in all copies or derivative works. 

Copyright (c) 1996, 1997.

Module Name:

	vopsedec.h

Abstract:

	Decoder for one Video Object.

Revision History:

	09-30-97: merge error resilient changes from Toshiba by [e-mail]
	11-30-97: added Spatial tools by Takefumi Nagumo([e-mail]) SONY corporation
	12-20-97: Interlaced tools added by NextLevel Systems
        X. Chen ([e-mail]), B. Eifrig ([e-mail])
	Sep.06	1999 : RRV added by Eishi Morimatsu (Fujitsu Laboratories Ltd.) 
	Feb.01	2000 : Bug fixed OBSS by Takefumi Nagumo (Sony)
	May.25  2000 : MB stuffing decoding on the last MB by Hideaki Kimata (NTT)

*************************************************************************/

#ifndef __VOPSEDEC_HPP_ 
#define __VOPSEDEC_HPP_

// decoder.c related
extern Bool main_short_video_header;

// bitstrm.c related
#ifdef MP4_STANDALONE
#define MAX_BUFFER_SIZE            (128*1024)
#else
#define MAX_BUFFER_SIZE            (8*1024)
#endif

// Get the num-bit field of x starting from position p
#define getbit(data, position, num) 	((data >> (position + 1 - num)) & ~(~0 << num))

extern Int m_lCounter;
extern int nBytesAvailable;
extern unsigned int g_bEOFReached;
extern UInt m_uNumOfBitsInBuffer;
extern Char m_chDecBuffer;
extern int nTotalBytes;
extern unsigned char MyBuffer[MAX_BUFFER_SIZE];
extern UInt nSingBitRet;
extern int g_nMP4VPTS;

extern inline Void ReadFile();
extern inline UInt getSingleBit ();//return 1 bit from the stream
extern inline UInt getBits (UInt numBits);//return bits from the stream
extern inline Int peekBits (UInt numBits); 			//peek bits from the stream
extern inline Int peekBitsTillByteAlign (Int *nBitsToPeek) ; //peek 1-8 bits until the next byte alignment
extern inline Int peekBitsFromByteAlign (Int numBits) ;		//peek from the stream at byte boundary

#define MP4V_EOF()  ((nBytesAvailable <= 0) ? (g_bEOFReached) : (0))

#define MP4V_GETSINGLEBIT() \
\
if (m_uNumOfBitsInBuffer) \
{ \
    nSingBitRet = ((m_chDecBuffer&0x80) != 0);\
    m_chDecBuffer = m_chDecBuffer << 1;\
    m_uNumOfBitsInBuffer --;\
}\
else\
{\
	if(!nBytesAvailable)\
		ReadFile();\
\
    m_chDecBuffer = MyBuffer[nTotalBytes-nBytesAvailable];\
    nBytesAvailable--;\
\
    nSingBitRet = ((m_chDecBuffer&0x80) != 0);\
    m_chDecBuffer = m_chDecBuffer << 1;\
    m_uNumOfBitsInBuffer = 7;\
}
//return nSingBitRet;
//((nSingBitRet) ? (1) : (0))

#define MP4V_RETSINGLEBIT(nBitRet) \
{\
if (m_uNumOfBitsInBuffer) \
{ \
    *nBitRet =((m_chDecBuffer&0x80)!= 0);\
    m_chDecBuffer = m_chDecBuffer << 1;\
    m_uNumOfBitsInBuffer --;\
}\
else\
{\
	if(!nBytesAvailable)\
		ReadFile();\
\
    m_chDecBuffer = MyBuffer[nTotalBytes-nBytesAvailable];\
    nBytesAvailable--;\
\
    *nBitRet = ((m_chDecBuffer&0x80)!=0);\
    m_chDecBuffer = m_chDecBuffer << 1;\
    m_uNumOfBitsInBuffer = 7;\
}\
}

#define MP4V_FLUSH(nExtraBits)\
\
	if(m_uNumOfBitsInBuffer==0)\
        getBits (nExtraBits);\
\
	assert (m_uNumOfBitsInBuffer != 8);\
	m_uNumOfBitsInBuffer = 0;

#define MP4V_PEEKBITS(iBitsToRet, numBits)\
{\
	assert (numBits <= 32);\
	Int nBitsToPeek = numBits - m_uNumOfBitsInBuffer;\
    Int chNext, iNext;\
\
/*	if (nBitsToPeek <= 0)*/\
/*		*iBitsToRet = getbit (m_chDecBuffer, 7, numBits); */\
/*	else*/\
	{\
        int nlocalBytes = nBytesAvailable;\
\
        if(!nBytesAvailable)\
        {\
            ReadFile();\
            nlocalBytes = nBytesAvailable;\
        }\
		*iBitsToRet = getbit (m_chDecBuffer, 7, m_uNumOfBitsInBuffer);\
		for (; nBitsToPeek > 0; nBitsToPeek -= 8)\
        {\
            if(!nBytesAvailable)\
            {\
                ReadFile();\
                nlocalBytes = nBytesAvailable;\
            }\
            chNext = MyBuffer[nTotalBytes-nlocalBytes];\
            iNext = chNext & 0x000000FF;\
            nlocalBytes--;\
\
			if (nBitsToPeek < 8)\
            {\
				iNext = iNext >> (8 - nBitsToPeek);\
				*iBitsToRet = iNext | ((*iBitsToRet) << nBitsToPeek);\
			}\
			else\
            {\
				*iBitsToRet = ((*iBitsToRet) << 8);\
				*iBitsToRet |= iNext;\
			}\
		}\
	}\
}

// huffman.c related
#ifdef MP4V_NEW_VLD

// Cache details for memory allocation
#define CACHE_LINE_SIZE                 64
#define CACHE_LINE_MASK                 0xFFFFFFC0

// Maximum number of supported by the decoder
#define MAX_VLD_TABLES                  9

// Individual ids for each table 
#define TABLE_ID_CBPY                   0
#define TABLE_ID_INTRADCY               1
#define TABLE_ID_INTRADCC               2
#define TABLE_ID_MBTYPEBVOP             3
#define TABLE_ID_MCBPCINTRA             4
#define TABLE_ID_MCBPCINTER             5
#define TABLE_ID_MV                     6
#define TABLE_ID_DCT                    7
#define TABLE_ID_DCTINTRA               8

// CBPY Table specific stuff
#define MAX_SYMBOLS_FOR_CBPY            18
#define MAX_SYMBOL_LENGTH_IN_CBPY        6

// IntraDCY Table specific stuff
#define MAX_SYMBOLS_FOR_INTRADCY        13
#define MAX_SYMBOL_LENGTH_IN_INTRADCY   11

// IntraDCc Table specific stuff
#define MAX_SYMBOLS_FOR_INTRADCC        13
#define MAX_SYMBOL_LENGTH_IN_INTRADCC   12

// MbTypeBVOP Table specific stuff
#define MAX_SYMBOLS_FOR_MBTYPEBVOP       4
#define MAX_SYMBOL_LENGTH_IN_MBTYPEBVOP  4

// MCBPCIntra Table specific stuff
#define MAX_SYMBOLS_FOR_MCBPCINTRA       9
#define MAX_SYMBOL_LENGTH_IN_MCBPCINTRA  9

// MCBPCInter Table specific stuff
#define MAX_SYMBOLS_FOR_MCBPCINTER       21
#define MAX_SYMBOL_LENGTH_IN_MCBPCINTER   9

// MV Table specific stuff
#define MAX_SYMBOLS_FOR_MV               65
#define MAX_SYMBOL_LENGTH_IN_MV          13

// DCT Table specific stuff
#define MAX_SYMBOLS_FOR_DCT             103
#define MAX_SYMBOL_LENGTH_IN_DCT         12

// DCTIntra Table specific stuff
#define MAX_SYMBOLS_FOR_DCTINTRA        103
#define MAX_SYMBOL_LENGTH_IN_DCTINTRA    12

extern Char *g_OrgTables [MAX_VLD_TABLES];
extern PNewVLDTable g_pTables [MAX_VLD_TABLES];
#else
extern PPHUFFMAN_DEC_STRUCT m_pentrdecDCT;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecDCTIntra;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecMV;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecMCBPCintra;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecMCBPCinter;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecCBPY;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecIntraDCy;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecIntraDCc;
extern PPHUFFMAN_DEC_STRUCT m_pentrdecMbTypeBVOP;
extern Int nBitsRead;
#endif

#ifdef MP4V_DEBUG
extern Int nBitsRead, nSymId;
#endif
extern Int nPeekedBits;

// gmc_motion.c related
extern Void globalmv(Int *, Int *, Int *, Int *, CoordI, CoordI, Int, Bool);

// blkdec.c related
#define GETCODEDBLOCKPATTERN(pMBMode, blkn) (pMBMode->m_rgbCodedBlockPattern[(UInt) blkn - 1])
#define SETCODEDBLOCKPATTERN(pMBMode, blkn, bisCoded) (GETCODEDBLOCKPATTERN(pMBMode, blkn) = bisCoded)

extern CVideoObject *g_pVO;
extern CVideoObjectDecoder *g_pDecoder;
extern VOLMode *g_pVOL; // vol mode
extern VOPMode *g_pVOP; // vop mode

// Block decoding functions
extern inline BlockMemory decideIntraPred (CMBMode*, Int *, Int, MacroBlockMemory* , MacroBlockMemory*, MacroBlockMemory*,
                                        MacroBlockMemory*, CMBMode*, CMBMode*, CMBMode*);
extern inline Void decodeTextureIntraBlock (Int, Int, Int, MacroBlockMemory*, CMBMode*, BlockMemory, Int);
extern Int decodeIntraDCmpeg (Bool bIsYBlk); //decode the intra-dc: mpeg2 method
extern Void decodeIntraTCOEF (Int*, Int, Int*);
extern inline Void inverseDCACPred (CMBMode*, Int, Int*, Int, Int, BlockMemory, Int);
extern Void decodeIntraVLCtableIndex (Int, Int*, Int*, Int*, Int);  // return islastrun, run and level

#ifdef MP4V_NEW_VLD
extern Void decodeEscape_test (Int*, Int*, Int*, Int*, Int*, Bool);
#else
extern Void decodeEscape (Int*, Int*, Int*, Int*, Int*, PPHUFFMAN_DEC_STRUCT, Bool);
#endif
extern Void decodeEscape_WithFastBS (Int*, Int*, Int*, Int*, Int*, PPHUFFMAN_DEC_STRUCT, Bool, UInt, UInt *);
extern inline Void decodeTextureInterBlock (Int);
extern Void decodeInterTCOEF (Int*, Int, Int*);
extern Void decodeInterVLCtableIndex (Int, Int*, Int*, Bool*, Int);  // return islastrun, run and level

// mbdec.c related
#define SETCBPYANDC(pmbmd, iCBPC, iCBPY)\
    Int iBitPos = 3;\
\
	SETCODEDBLOCKPATTERN (pmbmd, U_BLOCK, (iCBPC >> 1) & 1);\
	SETCODEDBLOCKPATTERN (pmbmd, V_BLOCK, iCBPC & 1);\
\
	for (iBlk = Y_BLOCK1; iBlk <= Y_BLOCK4; iBlk++)\
   	{\
        SETCODEDBLOCKPATTERN (pmbmd, iBlk, (iCBPY >> iBitPos) & 1);\
        iBitPos--;\
	}

#define DECODETEXTUREINTRAMB(pmbmd, iMBX, iMBY)\
\