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123 lines
5.4 KiB
C
123 lines
5.4 KiB
C
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/*!
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************************************************************************
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* \file vlc.h
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*
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* \brief
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* header for (CA)VLC coding functions
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*
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* \author
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* Karsten Suehring
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*
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************************************************************************
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*/
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#ifndef _VLC_H_
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#define _VLC_H_
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#include <bfc/platform/types.h>
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//! gives CBP value from codeword number, both for intra and inter
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static const byte NCBP[2][48][2]=
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{
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{ // 0 1 2 3 4 5 6 7 8 9 10 11
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{15, 0},{ 0, 1},{ 7, 2},{11, 4},{13, 8},{14, 3},{ 3, 5},{ 5,10},{10,12},{12,15},{ 1, 7},{ 2,11},
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{ 4,13},{ 8,14},{ 6, 6},{ 9, 9},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},
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{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},
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{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0},{ 0, 0}
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},
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{
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{47, 0},{31,16},{15, 1},{ 0, 2},{23, 4},{27, 8},{29,32},{30, 3},{ 7, 5},{11,10},{13,12},{14,15},
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{39,47},{43, 7},{45,11},{46,13},{16,14},{ 3, 6},{ 5, 9},{10,31},{12,35},{19,37},{21,42},{26,44},
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{28,33},{35,34},{37,36},{42,40},{44,39},{ 1,43},{ 2,45},{ 4,46},{ 8,17},{17,18},{18,20},{20,24},
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{24,19},{ 6,21},{ 9,26},{22,28},{25,23},{32,27},{33,29},{34,30},{36,22},{40,25},{38,38},{41,41}
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}
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};
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//! for the linfo_levrun_inter routine
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static const byte NTAB1[4][8][2] =
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{
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{{1,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}},
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{{1,1},{1,2},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}},
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{{2,0},{1,3},{1,4},{1,5},{0,0},{0,0},{0,0},{0,0}},
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{{3,0},{2,1},{2,2},{1,6},{1,7},{1,8},{1,9},{4,0}},
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};
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static const byte LEVRUN1[16]=
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{
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4,2,2,1,1,1,1,1,1,1,0,0,0,0,0,0,
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};
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static const byte NTAB2[4][8][2] =
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{
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{{1,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}},
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{{1,1},{2,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}},
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{{1,2},{3,0},{4,0},{5,0},{0,0},{0,0},{0,0},{0,0}},
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{{1,3},{1,4},{2,1},{3,1},{6,0},{7,0},{8,0},{9,0}},
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};
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//! for the linfo_levrun__c2x2 routine
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static const byte LEVRUN3[4] =
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{
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2,1,0,0
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};
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static const byte NTAB3[2][2][2] =
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{
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{{1,0},{0,0}},
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{{2,0},{1,1}},
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};
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extern int se_v (const char *tracestring, Bitstream *bitstream);
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extern int ue_v (const char *tracestring, Bitstream *bitstream);
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extern Boolean u_1 (const char *tracestring, Bitstream *bitstream);
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extern int u_v (int LenInBits, const char *tracestring, Bitstream *bitstream);
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extern int i_v (int LenInBits, const char *tracestring, Bitstream *bitstream);
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// CAVLC mapping
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extern void linfo_ue(int len, int info, int *value1, int *dummy);
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extern void linfo_se(int len, int info, int *value1, int *dummy);
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extern void linfo_cbp_intra_normal(int len,int info,int *cbp, int *dummy);
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extern void linfo_cbp_inter_normal(int len,int info,int *cbp, int *dummy);
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extern void linfo_cbp_intra_other(int len,int info,int *cbp, int *dummy);
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extern void linfo_cbp_inter_other(int len,int info,int *cbp, int *dummy);
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extern void linfo_levrun_inter(int len,int info,int *level,int *irun);
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extern void linfo_levrun_c2x2(int len,int info,int *level,int *irun);
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extern int uvlc_startcode_follows(Slice *currSlice, int dummy);
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extern int readSyntaxElement_VLC (SyntaxElement *sym, Bitstream *currStream);
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extern int readSyntaxElement_UVLC(SyntaxElement *, struct datapartition *);
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extern int readSyntaxElement_Intra4x4PredictionMode(SyntaxElement *sym, Bitstream *currStream);
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extern int GetVLCSymbol (const uint8_t buffer[],int totbitoffset,int *info, int bytecount);
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extern int GetVLCSymbol_IntraMode (const uint8_t buffer[],int totbitoffset,int *info, int bytecount);
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extern int readSyntaxElement_FLC (Bitstream *currStream, int numbits);
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extern int readSyntaxElement_NumCoeffTrailingOnes (SyntaxElement *sym, Bitstream *currStream, int vlcnum);
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extern int readSyntaxElement_NumCoeffTrailingOnesChromaDC(VideoParameters *p_Vid, SyntaxElement *sym, Bitstream *currStream);
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extern int readSyntaxElement_Level_VLC0 (Bitstream *currStream);
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extern int readSyntaxElement_Level_VLCN (int vlc, Bitstream *currStream);
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extern int readSyntaxElement_TotalZeros (Bitstream *currStream, int vlcnum);
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extern int readSyntaxElement_TotalZerosChromaDC (VideoParameters *p_Vid, Bitstream *currStream, int vlcnum);
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extern int readSyntaxElement_Run (Bitstream *currStream, int vlcnum);
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extern int GetBits (const uint8_t buffer[],int totbitoffset,int *info, int bitcount, int numbits);
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extern int more_rbsp_data (const uint8_t buffer[],int totbitoffset,int bytecount);
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int code_from_bitstream_2d_17_4_c(SyntaxElement *sym, Bitstream *currStream, const uint16_t *lentab, const uint16_t *codtab, const uint16_t *masktab);
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int code_from_bitstream_2d_17_4_sse2(SyntaxElement *sym, Bitstream *currStream, const uint16_t *lentab, const uint16_t *codtab, const uint16_t *masktab);
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int code_from_bitstream_2d_5_4_c(SyntaxElement *sym, Bitstream *currStream, const uint8_t *lentab, const uint8_t *codtab, const uint8_t *masktab);
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int code_from_bitstream_2d_5_4_sse2(SyntaxElement *sym, Bitstream *currStream, const uint8_t *lentab, const uint8_t *codtab, const uint8_t *masktab);
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int code_from_bitstream_2d_16_1_c(Bitstream *currStream, const uint16_t *lentab, const uint16_t *codtab, const uint16_t *masktab);
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int code_from_bitstream_2d_16_1_sse2(Bitstream *currStream, const uint16_t *lentab, const uint16_t *codtab, const uint16_t *masktab);
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#endif
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