FFmpeg
jpeg2000.h
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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 
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 
114 // Progression orders
115 #define JPEG2000_PGOD_LRCP 0x00 // Layer-resolution level-component-position progression
116 #define JPEG2000_PGOD_RLCP 0x01 // Resolution level-layer-component-position progression
117 #define JPEG2000_PGOD_RPCL 0x02 // Resolution level-position-component-layer progression
118 #define JPEG2000_PGOD_PCRL 0x03 // Position-component-resolution level-layer progression
119 #define JPEG2000_PGOD_CPRL 0x04 // Component-position-resolution level-layer progression
120 
121 typedef struct Jpeg2000T1Context {
122  int data[6144];
123  uint16_t flags[6156];
125  int stride;
127 
128 typedef struct Jpeg2000TgtNode {
129  uint8_t val;
130  uint8_t temp_val;
131  uint8_t vis;
134 
135 typedef struct Jpeg2000CodingStyle {
136  int nreslevels; // number of resolution levels
137  int nreslevels2decode; // number of resolution levels to decode
139  log2_cblk_height; // exponent of codeblock size
140  uint8_t transform; // DWT type
141  uint8_t csty; // coding style
142  uint8_t nlayers; // number of layers
143  uint8_t mct; // multiple component transformation
144  uint8_t cblk_style; // codeblock coding style
145  uint8_t prog_order; // progression order
146  uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]; // precincts size according resolution levels
147  uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]; // TODO: initialize prec_size array with 0?
148  uint8_t init;
150 
151 typedef struct Jpeg2000QuantStyle {
152  uint8_t expn[JPEG2000_MAX_DECLEVELS * 3]; // quantization exponent
153  uint16_t mant[JPEG2000_MAX_DECLEVELS * 3]; // quantization mantissa
154  uint8_t quantsty; // quantization style
155  uint8_t nguardbits; // number of guard bits
157 
158 typedef struct Jpeg2000Pass {
159  uint16_t rate;
160  int64_t disto;
161  uint8_t flushed[4];
163 } Jpeg2000Pass;
164 
165 typedef struct Jpeg2000Layer {
166  uint8_t *data_start;
167  int data_len;
168  int npasses;
169  double disto;
171 } Jpeg2000Layer;
172 
173 typedef struct Jpeg2000Cblk {
174  uint8_t npasses;
175  uint8_t ninclpasses; // number coding of passes included in codestream
176  uint8_t nonzerobits;
177  uint8_t incl;
178  uint16_t length;
179  uint16_t *lengthinc;
180  uint8_t nb_lengthinc;
181  uint8_t lblock;
182  uint8_t *data;
189  int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
190 } Jpeg2000Cblk; // code block
191 
192 typedef struct Jpeg2000Prec {
199  int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
200 } Jpeg2000Prec; // precinct
201 
202 typedef struct Jpeg2000Band {
203  int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
205  int i_stepsize; // quantization stepsize
206  float f_stepsize; // quantization stepsize
208 } Jpeg2000Band; // subband
209 
210 typedef struct Jpeg2000ResLevel {
211  uint8_t nbands;
212  int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
213  int num_precincts_x, num_precincts_y; // number of precincts in x/y direction
214  uint8_t log2_prec_width, log2_prec_height; // exponent of precinct size
216 } Jpeg2000ResLevel; // resolution level
217 
218 typedef struct Jpeg2000Component {
221  float *f_data;
222  int *i_data;
223  int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- can be reduced with lowres option
224  int coord_o[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- original values from jpeg2000 headers
225  uint8_t roi_shift; // ROI scaling value for the component
227 
228 /* misc tools */
229 static inline int ff_jpeg2000_ceildivpow2(int a, int b)
230 {
231  return -((-(int64_t)a) >> b);
232 }
233 
234 static inline int ff_jpeg2000_ceildiv(int a, int64_t b)
235 {
236  return (a + b - 1) / b;
237 }
238 
239 /* TIER-1 routines */
240 
241 /* Set up lookup tables used in TIER-1. */
242 void ff_jpeg2000_init_tier1_luts(void);
243 
244 /* Update significance of a coefficient at current position (x,y) and
245  * for neighbors. */
247  int x, int y, int negative);
248 
249 extern uint8_t ff_jpeg2000_sigctxno_lut[256][4];
250 
251 /* Get context label (number in range[0..8]) of a coefficient for significance
252  * propagation and cleanup coding passes. */
253 static inline int ff_jpeg2000_getsigctxno(int flag, int bandno)
254 {
255  return ff_jpeg2000_sigctxno_lut[flag & 255][bandno];
256 }
257 
258 static const uint8_t refctxno_lut[2][2] = { { 14, 15 }, { 16, 16 } };
259 
260 /* Get context label (number in range[14..16]) of a coefficient for magnitude
261  * refinement pass. */
262 static inline int ff_jpeg2000_getrefctxno(int flag)
263 {
264  return refctxno_lut[(flag >> 14) & 1][(flag & 255) != 0];
265 }
266 
267 extern uint8_t ff_jpeg2000_sgnctxno_lut[16][16];
268 extern uint8_t ff_jpeg2000_xorbit_lut[16][16];
269 
270 /* Get context label (number in range[9..13]) for sign decoding. */
271 static inline int ff_jpeg2000_getsgnctxno(int flag, int *xorbit)
272 {
273  *xorbit = ff_jpeg2000_xorbit_lut[flag & 15][(flag >> 8) & 15];
274  return ff_jpeg2000_sgnctxno_lut[flag & 15][(flag >> 8) & 15];
275 }
276 
278  Jpeg2000CodingStyle *codsty,
279  Jpeg2000QuantStyle *qntsty,
280  int cbps, int dx, int dy,
282 
284 
286 
287 static inline int needs_termination(int style, int passno) {
288  if (style & JPEG2000_CBLK_BYPASS) {
289  int type = passno % 3;
290  passno /= 3;
291  if (type == 0 && passno > 2)
292  return 2;
293  if (type == 2 && passno > 2)
294  return 1;
295  if (style & JPEG2000_CBLK_TERMALL) {
296  return passno > 2 ? 2 : 1;
297  }
298  }
299  if (style & JPEG2000_CBLK_TERMALL)
300  return 1;
301  return 0;
302 }
303 
304 int32_t ff_tag_tree_size(int w, int h);
305 void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val);
306 
307 #endif /* AVCODEC_JPEG2000_H */
mqc.h
MQ-coder.
Jpeg2000Cblk::nb_terminationsinc
int nb_terminationsinc
Definition: jpeg2000.h:185
JPEG2000_POC
@ JPEG2000_POC
Definition: jpeg2000.h:49
Jpeg2000QuantStyle::quantsty
uint8_t quantsty
Definition: jpeg2000.h:154
Jpeg2000Prec::decoded_layers
int decoded_layers
Definition: jpeg2000.h:198
JPEG2000_EOC
@ JPEG2000_EOC
Definition: jpeg2000.h:58
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:85
JPEG2000_MAX_RESLEVELS
#define JPEG2000_MAX_RESLEVELS
Definition: jpeg2000.h:71
ff_jpeg2000_reinit
void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
Definition: jpeg2000.c:576
JPEG2000_QSTY_NONE
@ JPEG2000_QSTY_NONE
Definition: jpeg2000.h:65
Jpeg2000Layer::disto
double disto
Definition: jpeg2000.h:169
Jpeg2000CodingStyle::prog_order
uint8_t prog_order
Definition: jpeg2000.h:145
JPEG2000_QCD
@ JPEG2000_QCD
Definition: jpeg2000.h:46
Jpeg2000Prec::nb_codeblocks_height
int nb_codeblocks_height
Definition: jpeg2000.h:194
Jpeg2000Cblk::coord
int coord[2][2]
Definition: jpeg2000.h:189
Jpeg2000CodingStyle::mct
uint8_t mct
Definition: jpeg2000.h:143
Jpeg2000Band::i_stepsize
int i_stepsize
Definition: jpeg2000.h:205
needs_termination
static int needs_termination(int style, int passno)
Definition: jpeg2000.h:287
Jpeg2000Cblk::nb_lengthinc
uint8_t nb_lengthinc
Definition: jpeg2000.h:180
JPEG2000_SOP
@ JPEG2000_SOP
Definition: jpeg2000.h:55
Jpeg2000Layer::cum_passes
int cum_passes
Definition: jpeg2000.h:170
w
uint8_t w
Definition: llviddspenc.c:39
Jpeg2000Layer::data_len
int data_len
Definition: jpeg2000.h:167
Jpeg2000Prec::zerobits
Jpeg2000TgtNode * zerobits
Definition: jpeg2000.h:195
JPEG2000_SOD
@ JPEG2000_SOD
Definition: jpeg2000.h:57
b
#define b
Definition: input.c:41
ff_jpeg2000_set_significance
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, int negative)
Definition: jpeg2000.c:179
JPEG2000_SOC
@ JPEG2000_SOC
Definition: jpeg2000.h:39
JPEG2000_PPM
@ JPEG2000_PPM
Definition: jpeg2000.h:50
Jpeg2000Prec::coord
int coord[2][2]
Definition: jpeg2000.h:199
ff_jpeg2000_ceildiv
static int ff_jpeg2000_ceildiv(int a, int64_t b)
Definition: jpeg2000.h:234
Jpeg2000Prec
Definition: jpeg2000.h:192
JPEG2000_CBLK_TERMALL
#define JPEG2000_CBLK_TERMALL
Definition: jpeg2000.h:104
JPEG2000_SOT
@ JPEG2000_SOT
Definition: jpeg2000.h:54
Jpeg2000TgtNode::parent
struct Jpeg2000TgtNode * parent
Definition: jpeg2000.h:132
Jpeg2000Band
Definition: jpeg2000.h:202
t1
#define t1
Definition: regdef.h:29
Jpeg2000Pass::rate
uint16_t rate
Definition: jpeg2000.h:159
ff_jpeg2000_xorbit_lut
uint8_t ff_jpeg2000_xorbit_lut[16][16]
Definition: jpeg2000.c:142
ff_jpeg2000_getrefctxno
static int ff_jpeg2000_getrefctxno(int flag)
Definition: jpeg2000.h:262
Jpeg2000Pass::flushed_len
int flushed_len
Definition: jpeg2000.h:162
Jpeg2000T1Context::mqc
MqcState mqc
Definition: jpeg2000.h:124
Jpeg2000Cblk::incl
uint8_t incl
Definition: jpeg2000.h:177
Jpeg2000CodingStyle::init
uint8_t init
Definition: jpeg2000.h:148
ff_jpeg2000_init_component
int ff_jpeg2000_init_component(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int cbps, int dx, int dy, AVCodecContext *ctx)
Definition: jpeg2000.c:466
Jpeg2000CodingStyle::log2_cblk_width
uint8_t log2_cblk_width
Definition: jpeg2000.h:138
Jpeg2000Cblk::passes
Jpeg2000Pass * passes
Definition: jpeg2000.h:187
Jpeg2000CodingStyle::log2_prec_heights
uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:147
val
static double val(void *priv, double ch)
Definition: aeval.c:76
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
Jpeg2000T1Context
Definition: jpeg2000.h:121
Jpeg2000ResLevel
Definition: jpeg2000.h:210
Jpeg2000CodingStyle::cblk_style
uint8_t cblk_style
Definition: jpeg2000.h:144
Jpeg2000Pass::disto
int64_t disto
Definition: jpeg2000.h:160
ff_jpeg2000_sgnctxno_lut
uint8_t ff_jpeg2000_sgnctxno_lut[16][16]
Definition: jpeg2000.c:142
Jpeg2000QuantStyle::nguardbits
uint8_t nguardbits
Definition: jpeg2000.h:155
Jpeg2000CodingStyle::transform
uint8_t transform
Definition: jpeg2000.h:140
Jpeg2000Cblk::layers
Jpeg2000Layer * layers
Definition: jpeg2000.h:188
Jpeg2000ResLevel::band
Jpeg2000Band * band
Definition: jpeg2000.h:215
Jpeg2000Cblk::data
uint8_t * data
Definition: jpeg2000.h:182
Jpeg2000Band::coord
int coord[2][2]
Definition: jpeg2000.h:203
ctx
AVFormatContext * ctx
Definition: movenc.c:48
Jpeg2000Band::f_stepsize
float f_stepsize
Definition: jpeg2000.h:206
JPEG2000_COM
@ JPEG2000_COM
Definition: jpeg2000.h:53
JPEG2000_QSTY_SI
@ JPEG2000_QSTY_SI
Definition: jpeg2000.h:66
JPEG2000_CRG
@ JPEG2000_CRG
Definition: jpeg2000.h:52
Jpeg2000Component::reslevel
Jpeg2000ResLevel * reslevel
Definition: jpeg2000.h:219
JPEG2000_CBLK_BYPASS
#define JPEG2000_CBLK_BYPASS
Definition: jpeg2000.h:102
Jpeg2000Cblk::lblock
uint8_t lblock
Definition: jpeg2000.h:181
Jpeg2000CodingStyle::log2_prec_widths
uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]
Definition: jpeg2000.h:146
Jpeg2000Cblk::length
uint16_t length
Definition: jpeg2000.h:178
JPEG2000_PLM
@ JPEG2000_PLM
Definition: jpeg2000.h:44
Jpeg2000Band::prec
Jpeg2000Prec * prec
Definition: jpeg2000.h:207
Jpeg2000Layer::npasses
int npasses
Definition: jpeg2000.h:168
Jpeg2000ResLevel::num_precincts_y
int num_precincts_y
Definition: jpeg2000.h:213
JPEG2000_EPH
@ JPEG2000_EPH
Definition: jpeg2000.h:56
Jpeg2000ResLevel::coord
int coord[2][2]
Definition: jpeg2000.h:212
JPEG2000_PPT
@ JPEG2000_PPT
Definition: jpeg2000.h:51
Jpeg2000Band::log2_cblk_height
uint16_t log2_cblk_height
Definition: jpeg2000.h:204
Jpeg2000Prec::nb_codeblocks_width
int nb_codeblocks_width
Definition: jpeg2000.h:193
Jpeg2000ResLevel::log2_prec_height
uint8_t log2_prec_height
Definition: jpeg2000.h:214
Jpeg2000Markers
Jpeg2000Markers
Definition: jpeg2000.h:38
Jpeg2000Component
Definition: jpeg2000.h:218
Jpeg2000Prec::cblkincl
Jpeg2000TgtNode * cblkincl
Definition: jpeg2000.h:196
Jpeg2000Component::i_data
int * i_data
Definition: jpeg2000.h:222
Jpeg2000Component::dwt
DWTContext dwt
Definition: jpeg2000.h:220
Jpeg2000ResLevel::nbands
uint8_t nbands
Definition: jpeg2000.h:211
Jpeg2000Cblk
Definition: jpeg2000.h:173
Jpeg2000Component::f_data
float * f_data
Definition: jpeg2000.h:221
Jpeg2000Cblk::ninclpasses
uint8_t ninclpasses
Definition: jpeg2000.h:175
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
JPEG2000_COD
@ JPEG2000_COD
Definition: jpeg2000.h:41
ff_jpeg2000_getsgnctxno
static int ff_jpeg2000_getsgnctxno(int flag, int *xorbit)
Definition: jpeg2000.h:271
Jpeg2000T1Context::stride
int stride
Definition: jpeg2000.h:125
Jpeg2000TgtNode
Definition: jpeg2000.h:128
Jpeg2000Cblk::data_start
int * data_start
Definition: jpeg2000.h:186
Jpeg2000CodingStyle::csty
uint8_t csty
Definition: jpeg2000.h:141
Jpeg2000CodingStyle::nlayers
uint8_t nlayers
Definition: jpeg2000.h:142
Jpeg2000CodingStyle::nreslevels
int nreslevels
Definition: jpeg2000.h:136
Jpeg2000TgtNode::temp_val
uint8_t temp_val
Definition: jpeg2000.h:130
flag
#define flag(name)
Definition: cbs_av1.c:553
Jpeg2000Pass
Definition: jpeg2000.h:158
Jpeg2000CodingStyle::log2_cblk_height
uint8_t log2_cblk_height
Definition: jpeg2000.h:139
Jpeg2000ResLevel::num_precincts_x
int num_precincts_x
Definition: jpeg2000.h:213
JPEG2000_RGN
@ JPEG2000_RGN
Definition: jpeg2000.h:48
Jpeg2000QuantStyle::expn
uint8_t expn[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:152
Jpeg2000Layer
Definition: jpeg2000.h:165
JPEG2000_SIZ
@ JPEG2000_SIZ
Definition: jpeg2000.h:40
Jpeg2000T1Context::data
int data[6144]
Definition: jpeg2000.h:122
Jpeg2000Band::log2_cblk_width
uint16_t log2_cblk_width
Definition: jpeg2000.h:204
ff_tag_tree_zero
void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val)
Definition: jpeg2000.c:86
ff_jpeg2000_getsigctxno
static int ff_jpeg2000_getsigctxno(int flag, int bandno)
Definition: jpeg2000.h:253
ff_jpeg2000_sigctxno_lut
uint8_t ff_jpeg2000_sigctxno_lut[256][4]
Definition: jpeg2000.c:97
DWTContext
Definition: dirac_dwt.h:54
Jpeg2000QuantStyle::mant
uint16_t mant[JPEG2000_MAX_DECLEVELS *3]
Definition: jpeg2000.h:153
avcodec.h
JPEG2000_PLT
@ JPEG2000_PLT
Definition: jpeg2000.h:45
JPEG2000_QSTY_SE
@ JPEG2000_QSTY_SE
Definition: jpeg2000.h:67
Jpeg2000Layer::data_start
uint8_t * data_start
Definition: jpeg2000.h:166
Jpeg2000Pass::flushed
uint8_t flushed[4]
Definition: jpeg2000.h:161
Jpeg2000T1Context::flags
uint16_t flags[6156]
Definition: jpeg2000.h:123
Jpeg2000Component::coord
int coord[2][2]
Definition: jpeg2000.h:223
AVCodecContext
main external API structure.
Definition: avcodec.h:501
ff_jpeg2000_ceildivpow2
static int ff_jpeg2000_ceildivpow2(int a, int b)
Definition: jpeg2000.h:229
Jpeg2000ResLevel::log2_prec_width
uint8_t log2_prec_width
Definition: jpeg2000.h:214
ff_tag_tree_size
int32_t ff_tag_tree_size(int w, int h)
Definition: jpeg2000.c:43
ff_jpeg2000_init_tier1_luts
void ff_jpeg2000_init_tier1_luts(void)
Definition: jpeg2000.c:173
Jpeg2000Cblk::nb_terminations
int nb_terminations
Definition: jpeg2000.h:184
jpeg2000dwt.h
JPEG2000_COC
@ JPEG2000_COC
Definition: jpeg2000.h:42
JPEG2000_MAX_DECLEVELS
#define JPEG2000_MAX_DECLEVELS
Definition: jpeg2000.h:70
refctxno_lut
static const uint8_t refctxno_lut[2][2]
Definition: jpeg2000.h:258
Jpeg2000Cblk::npasses
uint8_t npasses
Definition: jpeg2000.h:174
Jpeg2000CodingStyle::nreslevels2decode
int nreslevels2decode
Definition: jpeg2000.h:137
JPEG2000_QCC
@ JPEG2000_QCC
Definition: jpeg2000.h:47
Jpeg2000Component::roi_shift
uint8_t roi_shift
Definition: jpeg2000.h:225
int32_t
int32_t
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