139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
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#pragma once
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#include <bfc/platform/types.h>
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#include "BitReader.h"
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#include "IDCT.h"
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#include "IDCTRef.h"
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#include "lib.h"
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/* this is necessary for the max resolution 16CIF */
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#define MBC 88
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#define MBR 72
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#define PSC 1
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#define PSC_LENGTH 17
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#define SE_CODE 31
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#define MODE_INTER 0
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#define MODE_INTER_Q 1
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#define MODE_INTER4V 2
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#define MODE_INTRA 3
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#define MODE_INTRA_Q 4
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#define MODE_INTER4V_Q 5
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#define PBMODE_NORMAL 0
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#define PBMODE_MVDB 1
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#define PBMODE_CBPB_MVDB 2
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#define ESCAPE 7167
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#define ESCAPE_INDEX 102
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#define EP_FORWARD_PREDICTION 0
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#define EI_EP_UPWARD_PREDICTION 1
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#define EP_BIDIRECTIONAL_PREDICTION 2
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#define EI_EP_INTRA_PREDICTION 3
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#define MAX_LAYERS 2
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/* picture types */
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#define PCT_INTRA 0
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#define PCT_INTER 1
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#define PCT_DISPOSABLE_INTER 2
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//#define PCT_IPB 2
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#define PCT_B 3
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#define ON 1
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#define OFF 0
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#define YES 1
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#define NO 0
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#define B_EI_EP_STUFFING 5
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#define INVALID_MBTYPE 255
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#define B_DIRECT_PREDICTION 0
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#define B_FORWARD_PREDICTION 1
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#define B_BACKWARD_PREDICTION 2
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#define B_BIDIRECTIONAL_PREDICTION 3
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#define B_INTRA_PREDICTION 4
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#define SF_SQCIF 1 /* 001 */
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#define SF_QCIF 2 /* 010 */
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#define SF_CIF 3 /* 011 */
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#define SF_4CIF 4 /* 100 */
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#define SF_16CIF 5 /* 101 */
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/* this is necessary for the max resolution 16CIF */
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#define MBC 88
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#define MBR 72
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#define NO_VEC 999
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typedef unsigned char *Frame[3];
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class Decoder
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{
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public:
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Decoder();
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~Decoder();
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int init();
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void getpicture(Frame frame);
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int getheader();
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int DecodeFrame(YV12_PLANES *yv12, int *width, int *height, int *keyframe);
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static unsigned char *clp;
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BitReader buffer;
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private:
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void reconstruct(int bx, int by, int mode);
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void get_I_P_MBs();
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void horiz_edge_filter(unsigned char *rec, int width, int height, int chr);
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void vert_edge_filter(unsigned char *rec, int width, int height, int chr);
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void edge_filter(unsigned char *lum, unsigned char *Cb, unsigned char *Cr, int width, int height);
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void vert_post_filter(unsigned char *rec, int width, int height, int chr);
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void horiz_post_filter(unsigned char *rec, int width, int height, int chr);
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void PostFilter(unsigned char *lum, unsigned char *Cb, unsigned char *Cr,int width, int height);
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void addblock(int comp, int bx, int by, int addflag);
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int find_pmv(int x, int y, int block, int comp);
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void getpicturehdr();
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void getblock(int comp, int mode);
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void clearblock(int comp);
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void startcode();
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/* vlc */
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int getTMNMV(void);
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int getMCBPC(void);
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int getMBTYPE (int *cbp_present, int *quant_present);
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int getMCBPCintra(void);
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int getCBPY(void);
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private:
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Frame refframe, oldrefframe, newframe;
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Frame edgeframe, edgeframeorig;
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int MV[2][5][MBR+1][MBC+2];
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int modemap[MBR+1][MBC+2];
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int coded_map[MBR + 1][MBC + 1];
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int quant_map[MBR + 1][MBC + 1];
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unsigned int horizontal_size,vertical_size,mb_width,mb_height;
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unsigned int coded_picture_width, coded_picture_height;
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unsigned int chrom_width,chrom_height;
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int pict_type;
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int fault;
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int deblock;
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int refidct;
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int quant;
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int escapemode;
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bool firstFrame;
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IDCT idct;
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/* block data */
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short block[12][64];
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static bool initted;
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static unsigned char clp_table[1024];
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};
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