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1 | /* | ||
2 | * JPEG 2000 common defines, structures and functions | ||
3 | * Copyright (c) 2007 Kamil Nowosad | ||
4 | * Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com> | ||
5 | * | ||
6 | * This file is part of FFmpeg. | ||
7 | * | ||
8 | * FFmpeg is free software; you can redistribute it and/or | ||
9 | * modify it under the terms of the GNU Lesser General Public | ||
10 | * License as published by the Free Software Foundation; either | ||
11 | * version 2.1 of the License, or (at your option) any later version. | ||
12 | * | ||
13 | * FFmpeg is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * Lesser General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU Lesser General Public | ||
19 | * License along with FFmpeg; if not, write to the Free Software | ||
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
21 | */ | ||
22 | |||
23 | #ifndef AVCODEC_JPEG2000_H | ||
24 | #define AVCODEC_JPEG2000_H | ||
25 | |||
26 | /** | ||
27 | * @file | ||
28 | * JPEG 2000 structures and defines common | ||
29 | * to encoder and decoder | ||
30 | */ | ||
31 | |||
32 | #include <stdint.h> | ||
33 | |||
34 | #include "avcodec.h" | ||
35 | #include "mqc.h" | ||
36 | #include "jpeg2000dwt.h" | ||
37 | |||
38 | enum Jpeg2000Markers { | ||
39 | JPEG2000_SOC = 0xff4f, // start of codestream | ||
40 | JPEG2000_SIZ = 0xff51, // image and tile size | ||
41 | JPEG2000_COD, // coding style default | ||
42 | JPEG2000_COC, // coding style component | ||
43 | JPEG2000_TLM = 0xff55, // tile-part length, main header | ||
44 | JPEG2000_PLM = 0xff57, // packet length, main header | ||
45 | JPEG2000_PLT, // packet length, tile-part header | ||
46 | JPEG2000_QCD = 0xff5c, // quantization default | ||
47 | JPEG2000_QCC, // quantization component | ||
48 | JPEG2000_RGN, // region of interest | ||
49 | JPEG2000_POC, // progression order change | ||
50 | JPEG2000_PPM, // packed packet headers, main header | ||
51 | JPEG2000_PPT, // packed packet headers, tile-part header | ||
52 | JPEG2000_CRG = 0xff63, // component registration | ||
53 | JPEG2000_COM, // comment | ||
54 | JPEG2000_SOT = 0xff90, // start of tile-part | ||
55 | JPEG2000_SOP, // start of packet | ||
56 | JPEG2000_EPH, // end of packet header | ||
57 | JPEG2000_SOD, // start of data | ||
58 | JPEG2000_EOC = 0xffd9, // end of codestream | ||
59 | }; | ||
60 | |||
61 | #define JPEG2000_SOP_FIXED_BYTES 0xFF910004 | ||
62 | #define JPEG2000_SOP_BYTE_LENGTH 6 | ||
63 | |||
64 | enum Jpeg2000Quantsty { // quantization style | ||
65 | JPEG2000_QSTY_NONE, // no quantization | ||
66 | JPEG2000_QSTY_SI, // scalar derived | ||
67 | JPEG2000_QSTY_SE // scalar expounded | ||
68 | }; | ||
69 | |||
70 | #define JPEG2000_MAX_DECLEVELS 33 | ||
71 | #define JPEG2000_MAX_RESLEVELS (JPEG2000_MAX_DECLEVELS + 1) | ||
72 | |||
73 | #define JPEG2000_MAX_PASSES 100 | ||
74 | |||
75 | // T1 flags | ||
76 | // flags determining significance of neighbor coefficients | ||
77 | #define JPEG2000_T1_SIG_N 0x0001 | ||
78 | #define JPEG2000_T1_SIG_E 0x0002 | ||
79 | #define JPEG2000_T1_SIG_W 0x0004 | ||
80 | #define JPEG2000_T1_SIG_S 0x0008 | ||
81 | #define JPEG2000_T1_SIG_NE 0x0010 | ||
82 | #define JPEG2000_T1_SIG_NW 0x0020 | ||
83 | #define JPEG2000_T1_SIG_SE 0x0040 | ||
84 | #define JPEG2000_T1_SIG_SW 0x0080 | ||
85 | #define JPEG2000_T1_SIG_NB (JPEG2000_T1_SIG_N | JPEG2000_T1_SIG_E | \ | ||
86 | JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_W | \ | ||
87 | JPEG2000_T1_SIG_NE | JPEG2000_T1_SIG_NW | \ | ||
88 | JPEG2000_T1_SIG_SE | JPEG2000_T1_SIG_SW) | ||
89 | // flags determining sign bit of neighbor coefficients | ||
90 | #define JPEG2000_T1_SGN_N 0x0100 | ||
91 | #define JPEG2000_T1_SGN_S 0x0200 | ||
92 | #define JPEG2000_T1_SGN_W 0x0400 | ||
93 | #define JPEG2000_T1_SGN_E 0x0800 | ||
94 | |||
95 | #define JPEG2000_T1_VIS 0x1000 | ||
96 | #define JPEG2000_T1_SIG 0x2000 | ||
97 | #define JPEG2000_T1_REF 0x4000 | ||
98 | |||
99 | #define JPEG2000_T1_SGN 0x8000 | ||
100 | |||
101 | // Codeblock coding styles | ||
102 | #define JPEG2000_CBLK_BYPASS 0x01 // Selective arithmetic coding bypass | ||
103 | #define JPEG2000_CBLK_RESET 0x02 // Reset context probabilities | ||
104 | #define JPEG2000_CBLK_TERMALL 0x04 // Terminate after each coding pass | ||
105 | #define JPEG2000_CBLK_VSC 0x08 // Vertical stripe causal context formation | ||
106 | #define JPEG2000_CBLK_PREDTERM 0x10 // Predictable termination | ||
107 | #define JPEG2000_CBLK_SEGSYM 0x20 // Segmentation symbols present | ||
108 | |||
109 | // Coding styles | ||
110 | #define JPEG2000_CSTY_PREC 0x01 // Precincts defined in coding style | ||
111 | #define JPEG2000_CSTY_SOP 0x02 // SOP marker present | ||
112 | #define JPEG2000_CSTY_EPH 0x04 // EPH marker present | ||
113 | #define JPEG2000_CTSY_HTJ2K_F 0x40 // Only HT code-blocks (Rec. ITU-T T.814 | ISO/IEC 15444-15) are present | ||
114 | #define JPEG2000_CTSY_HTJ2K_M 0xC0 // HT code blocks (Rec. ITU-T T.814 | ISO/IEC 15444-15) can be present | ||
115 | |||
116 | // Progression orders | ||
117 | #define JPEG2000_PGOD_LRCP 0x00 // Layer-resolution level-component-position progression | ||
118 | #define JPEG2000_PGOD_RLCP 0x01 // Resolution level-layer-component-position progression | ||
119 | #define JPEG2000_PGOD_RPCL 0x02 // Resolution level-position-component-layer progression | ||
120 | #define JPEG2000_PGOD_PCRL 0x03 // Position-component-resolution level-layer progression | ||
121 | #define JPEG2000_PGOD_CPRL 0x04 // Component-position-resolution level-layer progression | ||
122 | |||
123 | typedef struct Jpeg2000T1Context { | ||
124 | int data[6144]; | ||
125 | uint16_t flags[6156]; | ||
126 | MqcState mqc; | ||
127 | int stride; | ||
128 | } Jpeg2000T1Context; | ||
129 | |||
130 | typedef struct Jpeg2000TgtNode { | ||
131 | uint8_t val; | ||
132 | uint8_t temp_val; | ||
133 | uint8_t vis; | ||
134 | struct Jpeg2000TgtNode *parent; | ||
135 | } Jpeg2000TgtNode; | ||
136 | |||
137 | typedef struct Jpeg2000CodingStyle { | ||
138 | int nreslevels; // number of resolution levels | ||
139 | int nreslevels2decode; // number of resolution levels to decode | ||
140 | uint8_t log2_cblk_width, | ||
141 | log2_cblk_height; // exponent of codeblock size | ||
142 | uint8_t transform; // DWT type | ||
143 | uint8_t csty; // coding style | ||
144 | uint8_t nlayers; // number of layers | ||
145 | uint8_t mct; // multiple component transformation | ||
146 | uint8_t cblk_style; // codeblock coding style | ||
147 | uint8_t prog_order; // progression order | ||
148 | uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]; // precincts size according resolution levels | ||
149 | uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]; // TODO: initialize prec_size array with 0? | ||
150 | uint8_t init; | ||
151 | } Jpeg2000CodingStyle; | ||
152 | |||
153 | typedef struct Jpeg2000QuantStyle { | ||
154 | uint8_t expn[JPEG2000_MAX_DECLEVELS * 3]; // quantization exponent | ||
155 | uint16_t mant[JPEG2000_MAX_DECLEVELS * 3]; // quantization mantissa | ||
156 | uint8_t quantsty; // quantization style | ||
157 | uint8_t nguardbits; // number of guard bits | ||
158 | } Jpeg2000QuantStyle; | ||
159 | |||
160 | typedef struct Jpeg2000Pass { | ||
161 | uint16_t rate; | ||
162 | int64_t disto; | ||
163 | uint8_t flushed[4]; | ||
164 | int flushed_len; | ||
165 | } Jpeg2000Pass; | ||
166 | |||
167 | typedef struct Jpeg2000Layer { | ||
168 | uint8_t *data_start; | ||
169 | int data_len; | ||
170 | int npasses; | ||
171 | double disto; | ||
172 | int cum_passes; | ||
173 | } Jpeg2000Layer; | ||
174 | |||
175 | typedef struct Jpeg2000Cblk { | ||
176 | uint8_t npasses; | ||
177 | uint8_t ninclpasses; // number coding of passes included in codestream | ||
178 | uint8_t nonzerobits; | ||
179 | uint8_t incl; | ||
180 | uint16_t length; | ||
181 | uint16_t *lengthinc; | ||
182 | uint8_t nb_lengthinc; | ||
183 | uint8_t lblock; | ||
184 | uint8_t *data; | ||
185 | size_t data_allocated; | ||
186 | int nb_terminations; | ||
187 | int nb_terminationsinc; | ||
188 | int *data_start; | ||
189 | Jpeg2000Pass *passes; | ||
190 | Jpeg2000Layer *layers; | ||
191 | int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} | ||
192 | } Jpeg2000Cblk; // code block | ||
193 | |||
194 | typedef struct Jpeg2000Prec { | ||
195 | int nb_codeblocks_width; | ||
196 | int nb_codeblocks_height; | ||
197 | Jpeg2000TgtNode *zerobits; | ||
198 | Jpeg2000TgtNode *cblkincl; | ||
199 | Jpeg2000Cblk *cblk; | ||
200 | int decoded_layers; | ||
201 | int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} | ||
202 | } Jpeg2000Prec; // precinct | ||
203 | |||
204 | typedef struct Jpeg2000Band { | ||
205 | int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} | ||
206 | uint16_t log2_cblk_width, log2_cblk_height; | ||
207 | int i_stepsize; // quantization stepsize | ||
208 | float f_stepsize; // quantization stepsize | ||
209 | Jpeg2000Prec *prec; | ||
210 | } Jpeg2000Band; // subband | ||
211 | |||
212 | typedef struct Jpeg2000ResLevel { | ||
213 | uint8_t nbands; | ||
214 | int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} | ||
215 | int num_precincts_x, num_precincts_y; // number of precincts in x/y direction | ||
216 | uint8_t log2_prec_width, log2_prec_height; // exponent of precinct size | ||
217 | Jpeg2000Band *band; | ||
218 | } Jpeg2000ResLevel; // resolution level | ||
219 | |||
220 | typedef struct Jpeg2000Component { | ||
221 | Jpeg2000ResLevel *reslevel; | ||
222 | DWTContext dwt; | ||
223 | float *f_data; | ||
224 | int *i_data; | ||
225 | int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- can be reduced with lowres option | ||
226 | int coord_o[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- original values from jpeg2000 headers | ||
227 | uint8_t roi_shift; // ROI scaling value for the component | ||
228 | } Jpeg2000Component; | ||
229 | |||
230 | /* misc tools */ | ||
231 | 965042 | static inline int ff_jpeg2000_ceildivpow2(int a, int b) | |
232 | { | ||
233 | 965042 | return -((-(int64_t)a) >> b); | |
234 | } | ||
235 | |||
236 | 567398 | static inline int ff_jpeg2000_ceildiv(int a, int64_t b) | |
237 | { | ||
238 | 567398 | return (a + b - 1) / b; | |
239 | } | ||
240 | |||
241 | /* TIER-1 routines */ | ||
242 | |||
243 | /* Set up lookup tables used in TIER-1. */ | ||
244 | void ff_jpeg2000_init_tier1_luts(void); | ||
245 | |||
246 | /* Update significance of a coefficient at current position (x,y) and | ||
247 | * for neighbors. */ | ||
248 | void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, | ||
249 | int x, int y, int negative); | ||
250 | |||
251 | extern uint8_t ff_jpeg2000_sigctxno_lut[256][4]; | ||
252 | |||
253 | /* Get context label (number in range[0..8]) of a coefficient for significance | ||
254 | * propagation and cleanup coding passes. */ | ||
255 | 346793285 | static inline int ff_jpeg2000_getsigctxno(int flag, int bandno) | |
256 | { | ||
257 | 346793285 | return ff_jpeg2000_sigctxno_lut[flag & 255][bandno]; | |
258 | } | ||
259 | |||
260 | static const uint8_t refctxno_lut[2][2] = { { 14, 15 }, { 16, 16 } }; | ||
261 | |||
262 | /* Get context label (number in range[14..16]) of a coefficient for magnitude | ||
263 | * refinement pass. */ | ||
264 | 171455064 | static inline int ff_jpeg2000_getrefctxno(int flag) | |
265 | { | ||
266 | 171455064 | return refctxno_lut[(flag >> 14) & 1][(flag & 255) != 0]; | |
267 | } | ||
268 | |||
269 | extern uint8_t ff_jpeg2000_sgnctxno_lut[16][16]; | ||
270 | extern uint8_t ff_jpeg2000_xorbit_lut[16][16]; | ||
271 | |||
272 | /* Get context label (number in range[9..13]) for sign decoding. */ | ||
273 | 93333219 | static inline int ff_jpeg2000_getsgnctxno(int flag, int *xorbit) | |
274 | { | ||
275 | 93333219 | *xorbit = ff_jpeg2000_xorbit_lut[flag & 15][(flag >> 8) & 15]; | |
276 | 93333219 | return ff_jpeg2000_sgnctxno_lut[flag & 15][(flag >> 8) & 15]; | |
277 | } | ||
278 | |||
279 | int ff_jpeg2000_init_component(Jpeg2000Component *comp, | ||
280 | Jpeg2000CodingStyle *codsty, | ||
281 | Jpeg2000QuantStyle *qntsty, | ||
282 | int cbps, int dx, int dy, | ||
283 | AVCodecContext *ctx); | ||
284 | |||
285 | void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty); | ||
286 | |||
287 | void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty); | ||
288 | |||
289 | 5032255 | static inline int needs_termination(int style, int passno) { | |
290 |
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5032255 | if (style & JPEG2000_CBLK_BYPASS) { |
291 | ✗ | int type = passno % 3; | |
292 | ✗ | passno /= 3; | |
293 | ✗ | if (type == 0 && passno > 2) | |
294 | ✗ | return 2; | |
295 | ✗ | if (type == 2 && passno > 2) | |
296 | ✗ | return 1; | |
297 | ✗ | if (style & JPEG2000_CBLK_TERMALL) { | |
298 | ✗ | return passno > 2 ? 2 : 1; | |
299 | } | ||
300 | } | ||
301 |
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5032255 | if (style & JPEG2000_CBLK_TERMALL) |
302 | ✗ | return 1; | |
303 | 5032255 | return 0; | |
304 | } | ||
305 | |||
306 | void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val); | ||
307 | |||
308 | #endif /* AVCODEC_JPEG2000_H */ | ||
309 |