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00022 #ifndef AVCODEC_J2K_H
00023 #define AVCODEC_J2K_H
00024
00031 #include "mqc.h"
00032 #include "j2k_dwt.h"
00033
00034 enum J2kMarkers{
00035 J2K_SOC = 0xff4f,
00036 J2K_SIZ = 0xff51,
00037 J2K_COD,
00038 J2K_COC,
00039 J2K_TLM = 0xff55,
00040 J2K_PLM = 0xff57,
00041 J2K_PLT,
00042 J2K_QCD = 0xff5c,
00043 J2K_QCC,
00044 J2K_RGN,
00045 J2K_POC,
00046 J2K_PPM,
00047 J2K_PPT,
00048 J2K_CRG = 0xff63,
00049 J2K_COM,
00050 J2K_SOT = 0xff90,
00051 J2K_SOP,
00052 J2K_EPH,
00053 J2K_SOD,
00054 J2K_EOC = 0xffd9,
00055 };
00056
00057 enum J2kQuantsty{
00058 J2K_QSTY_NONE,
00059 J2K_QSTY_SI,
00060 J2K_QSTY_SE
00061 };
00062
00063 #define J2K_MAX_CBLKW 64
00064 #define J2K_MAX_CBLKH 64
00065
00066
00067
00068 #define J2K_T1_SIG_N 0x0001
00069 #define J2K_T1_SIG_E 0x0002
00070 #define J2K_T1_SIG_W 0x0004
00071 #define J2K_T1_SIG_S 0x0008
00072 #define J2K_T1_SIG_NE 0x0010
00073 #define J2K_T1_SIG_NW 0x0020
00074 #define J2K_T1_SIG_SE 0x0040
00075 #define J2K_T1_SIG_SW 0x0080
00076 #define J2K_T1_SIG_NB (J2K_T1_SIG_N | J2K_T1_SIG_E | J2K_T1_SIG_S | J2K_T1_SIG_W \
00077 |J2K_T1_SIG_NE | J2K_T1_SIG_NW | J2K_T1_SIG_SE | J2K_T1_SIG_SW)
00078
00079 #define J2K_T1_SGN_N 0x0100
00080 #define J2K_T1_SGN_S 0x0200
00081 #define J2K_T1_SGN_W 0x0400
00082 #define J2K_T1_SGN_E 0x0800
00083
00084 #define J2K_T1_VIS 0x1000
00085 #define J2K_T1_SIG 0x2000
00086 #define J2K_T1_REF 0x4000
00087
00088 #define J2K_T1_SGN 0x8000
00089
00090
00091 #define J2K_CBLK_BYPASS 0x01 // Selective arithmetic coding bypass
00092 #define J2K_CBLK_RESET 0x02 // Reset context probabilities
00093 #define J2K_CBLK_TERMALL 0x04 // Terminate after each coding pass
00094 #define J2K_CBLK_VSC 0x08 // Vertical stripe causal context formation
00095 #define J2K_CBLK_PREDTERM 0x10 // Predictable termination
00096 #define J2K_CBLK_SEGSYM 0x20 // Segmentation symbols present
00097
00098
00099 #define J2K_CSTY_PREC 0x01 // Precincts defined in coding style
00100 #define J2K_CSTY_SOP 0x02 // SOP marker present
00101 #define J2K_CSTY_EPH 0x04 // EPH marker present
00102
00103 typedef struct {
00104 int data[J2K_MAX_CBLKW][J2K_MAX_CBLKH];
00105 int flags[J2K_MAX_CBLKW+2][J2K_MAX_CBLKH+2];
00106 MqcState mqc;
00107 } J2kT1Context;
00108
00109 typedef struct J2kTgtNode {
00110 uint8_t val;
00111 uint8_t vis;
00112 struct J2kTgtNode *parent;
00113 } J2kTgtNode;
00114
00115 typedef struct {
00116 uint8_t nreslevels;
00117 uint8_t log2_cblk_width,
00118 log2_cblk_height;
00119 uint8_t transform;
00120 uint8_t csty;
00121 uint8_t log2_prec_width,
00122 log2_prec_height;
00123 uint8_t nlayers;
00124 uint8_t mct;
00125 uint8_t cblk_style;
00126 } J2kCodingStyle;
00127
00128 typedef struct {
00129 uint8_t expn[32 * 3];
00130 uint16_t mant[32 * 3];
00131 uint8_t quantsty;
00132 uint8_t nguardbits;
00133 } J2kQuantStyle;
00134
00135 typedef struct {
00136 uint16_t rate;
00137 int64_t disto;
00138 } J2kPass;
00139
00140 typedef struct {
00141 uint8_t npasses;
00142 uint8_t ninclpasses;
00143 uint8_t nonzerobits;
00144 uint16_t length;
00145 uint16_t lengthinc;
00146 uint8_t lblock;
00147 uint8_t zero;
00148 uint8_t data[8192];
00149 J2kPass passes[100];
00150 } J2kCblk;
00151
00152 typedef struct {
00153 uint16_t xi0, xi1, yi0, yi1;
00154 J2kTgtNode *zerobits;
00155 J2kTgtNode *cblkincl;
00156 } J2kPrec;
00157
00158 typedef struct {
00159 uint16_t coord[2][2];
00160 uint16_t codeblock_width, codeblock_height;
00161 uint16_t cblknx, cblkny;
00162 uint32_t stepsize;
00163 J2kPrec *prec;
00164 J2kCblk *cblk;
00165 } J2kBand;
00166
00167 typedef struct {
00168 uint8_t nbands;
00169 uint16_t coord[2][2];
00170 uint16_t num_precincts_x, num_precincts_y;
00171 uint8_t log2_prec_width, log2_prec_height;
00172 J2kBand *band;
00173 } J2kResLevel;
00174
00175 typedef struct {
00176 J2kResLevel *reslevel;
00177 DWTContext dwt;
00178 int *data;
00179 uint16_t coord[2][2];
00180 } J2kComponent;
00181
00182
00183 #if 0
00184 #undef fprintf
00185 #undef printf
00186 void ff_j2k_printv(int *tab, int l);
00187 void ff_j2k_printu(uint8_t *tab, int l);
00188 #endif
00189
00190
00191 static inline int ff_j2k_ceildivpow2(int a, int b)
00192 {
00193 return (a + (1 << b) - 1)>> b;
00194 }
00195
00196 static inline int ff_j2k_ceildiv(int a, int b)
00197 {
00198 return (a + b - 1) / b;
00199 }
00200
00201
00202 J2kTgtNode *ff_j2k_tag_tree_init(int w, int h);
00203
00204
00205 void ff_j2k_init_tier1_luts(void);
00206
00207 void ff_j2k_set_significant(J2kT1Context *t1, int x, int y, int negative);
00208
00209 extern uint8_t ff_j2k_nbctxno_lut[256][4];
00210
00211 static inline int ff_j2k_getnbctxno(int flag, int bandno, int vert_causal_ctx_csty_symbol)
00212 {
00213 return ff_j2k_nbctxno_lut[flag&255][bandno];
00214 }
00215
00216 static inline int ff_j2k_getrefctxno(int flag)
00217 {
00218 static const uint8_t refctxno_lut[2][2] = {{14, 15}, {16, 16}};
00219 return refctxno_lut[(flag>>14)&1][(flag & 255) != 0];
00220 }
00221
00222 extern uint8_t ff_j2k_sgnctxno_lut[16][16], ff_j2k_xorbit_lut[16][16];
00223
00224 static inline int ff_j2k_getsgnctxno(int flag, int *xorbit)
00225 {
00226 *xorbit = ff_j2k_xorbit_lut[flag&15][(flag>>8)&15];
00227 return ff_j2k_sgnctxno_lut[flag&15][(flag>>8)&15];
00228 }
00229
00230 int ff_j2k_init_component(J2kComponent *comp, J2kCodingStyle *codsty, J2kQuantStyle *qntsty, int cbps, int dx, int dy);
00231 void ff_j2k_reinit(J2kComponent *comp, J2kCodingStyle *codsty);
00232 void ff_j2k_cleanup(J2kComponent *comp, J2kCodingStyle *codsty);
00233
00234 #endif