37 #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))
45 while (
w > 1 ||
h > 1) {
46 res +=
w * (int64_t)
h;
66 while (
w > 1 ||
h > 1) {
75 for (
i = 0;
i < ph;
i++)
76 for (j = 0; j < pw; j++)
77 t[
i * pw + j].parent = &
t2[(
i >> 1) *
w + (j >> 1)];
89 for (
i = 0;
i < siz;
i++) {
114 if (
h == 2)
return 8;
116 if (v >= 1)
return 7;
117 if (d >= 1)
return 6;
120 if (v == 2)
return 4;
121 if (v == 1)
return 3;
122 if (d >= 2)
return 2;
123 if (d == 1)
return 1;
125 if (d >= 3)
return 8;
127 if (
h+v >= 1)
return 7;
131 if (
h+v >= 2)
return 5;
132 if (
h+v == 1)
return 4;
135 if (
h+v >= 2)
return 2;
136 if (
h+v == 1)
return 1;
143 static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } };
144 static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } };
145 static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } };
149 int vcontrib, hcontrib;
163 for (
i = 0;
i < 256;
i++)
164 for (j = 0; j < 4; j++)
166 for (
i = 0;
i < 16;
i++)
167 for (j = 0; j < 16; j++)
201 int bandno,
int gbandno,
int reslevelno,
236 switch (bandno + (reslevelno > 0)) {
269 int precno,
int bandno,
int reslevelno,
270 int log2_band_prec_width,
271 int log2_band_prec_height)
274 int nb_codeblocks, cblkno;
283 (1 << log2_band_prec_width);
287 (1 << log2_band_prec_height);
291 (1 << log2_band_prec_width);
297 (1 << log2_band_prec_height);
332 for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
355 if ((bandno + !!reslevelno) & 1) {
356 cblk->
coord[0][0] +=
comp->reslevel[reslevelno-1].coord[0][1] -
357 comp->reslevel[reslevelno-1].coord[0][0];
358 cblk->
coord[0][1] +=
comp->reslevel[reslevelno-1].coord[0][1] -
359 comp->reslevel[reslevelno-1].coord[0][0];
361 if ((bandno + !!reslevelno) & 2) {
362 cblk->
coord[1][0] +=
comp->reslevel[reslevelno-1].coord[1][1] -
363 comp->reslevel[reslevelno-1].coord[1][0];
364 cblk->
coord[1][1] +=
comp->reslevel[reslevelno-1].coord[1][1] -
365 comp->reslevel[reslevelno-1].coord[1][0];
386 int bandno,
int gbandno,
int reslevelno,
387 int cbps,
int dx,
int dy)
390 uint8_t log2_band_prec_width, log2_band_prec_height;
402 if (reslevelno == 0) {
404 for (
i = 0;
i < 2;
i++)
405 for (j = 0; j < 2; j++)
419 for (
i = 0;
i < 2;
i++)
420 for (j = 0; j < 2; j++)
424 (((bandno + 1 >>
i) & 1LL) << declvl - 1),
448 for (precno = 0; precno < nb_precincts; precno++) {
450 precno, bandno, reslevelno,
451 log2_band_prec_width, log2_band_prec_height);
462 int cbps,
int dx,
int dy,
465 int reslevelno, bandno, gbandno = 0, ret,
i, j;
479 comp->coord[1][1] -
comp->coord[1][0], 0, avctx))
481 csize = (
comp->coord[0][1] -
comp->coord[0][0]) *
482 (
comp->coord[1][1] -
comp->coord[1][0]);
483 if (
comp->coord[0][1] -
comp->coord[0][0] > 32768 ||
484 comp->coord[1][1] -
comp->coord[1][0] > 32768) {
506 for (reslevelno = 0; reslevelno < codsty->
nreslevels; reslevelno++) {
513 for (
i = 0;
i < 2;
i++)
514 for (j = 0; j < 2; j++)
534 if (reslevel->
coord[0][1] == reslevel->
coord[0][0])
542 if (reslevel->
coord[1][1] == reslevel->
coord[1][0])
557 for (bandno = 0; bandno < reslevel->
nbands; bandno++, gbandno++) {
559 comp, codsty, qntsty,
560 bandno, gbandno, reslevelno,
571 int reslevelno, bandno, cblkno, precno;
572 for (reslevelno = 0; reslevelno < codsty->
nreslevels; reslevelno++) {
574 for (bandno = 0; bandno < rlevel->
nbands; bandno++) {
592 int reslevelno, bandno, precno;
601 reslevel =
comp->reslevel + reslevelno;
602 for (bandno = 0; bandno < reslevel->
nbands; bandno++) {
608 band = reslevel->
band + bandno;
618 for (cblkno = 0; cblkno < nb_code_blocks; cblkno ++) {
static double val(void *priv, double ch)
Macro definitions for various function/variable attributes.
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Libavcodec external API header.
common internal and external API header
#define FFSWAP(type, a, b)
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
int av_codec_is_encoder(const AVCodec *codec)
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
int32_t ff_tag_tree_size(int w, int h)
static void init_band_stepsize(AVCodecContext *avctx, Jpeg2000Band *band, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int bandno, int gbandno, int reslevelno, int cbps)
static const int ctxlbltab[3][3]
static const int contribtab[3][3]
static int getsigctxno(int flag, int bandno)
int ff_jpeg2000_init_component(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int cbps, int dx, int dy, AVCodecContext *avctx)
uint8_t ff_jpeg2000_sgnctxno_lut[16][16]
static Jpeg2000TgtNode * ff_jpeg2000_tag_tree_init(int w, int h)
void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val)
uint8_t ff_jpeg2000_xorbit_lut[16][16]
void av_cold ff_jpeg2000_init_tier1_luts(void)
void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
static const int xorbittab[3][3]
static int init_band(AVCodecContext *avctx, Jpeg2000ResLevel *reslevel, Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, Jpeg2000QuantStyle *qntsty, int bandno, int gbandno, int reslevelno, int cbps, int dx, int dy)
static int init_prec(AVCodecContext *avctx, Jpeg2000Band *band, Jpeg2000ResLevel *reslevel, Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty, int precno, int bandno, int reslevelno, int log2_band_prec_width, int log2_band_prec_height)
uint8_t ff_jpeg2000_sigctxno_lut[256][4]
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, int negative)
static int getsgnctxno(int flag, uint8_t *xorbit)
JPEG 2000 structures and defines common to encoder and decoder.
static int ff_jpeg2000_ceildivpow2(int a, int b)
#define JPEG2000_T1_SGN_S
#define JPEG2000_T1_SIG_NW
#define JPEG2000_T1_SIG_E
#define JPEG2000_T1_SGN_E
#define JPEG2000_T1_SGN_N
#define JPEG2000_T1_SGN_W
#define JPEG2000_T1_SIG_NE
#define JPEG2000_T1_SIG_SW
#define JPEG2000_T1_SIG_SE
#define JPEG2000_T1_SIG_W
#define JPEG2000_T1_SIG_S
#define JPEG2000_T1_SIG_N
void ff_dwt_destroy(DWTContext *s)
int ff_jpeg2000_dwt_init(DWTContext *s, int border[2][2], int decomp_levels, int type)
Initialize DWT.
static av_always_inline float ff_exp2fi(int x)
2^(x) for integer x
common internal API header
Memory handling functions.
main external API structure.
int64_t max_pixels
The number of pixels per image to maximally accept.
const struct AVCodec * codec
uint16_t log2_cblk_height
uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]
uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]
Jpeg2000TgtNode * zerobits
Jpeg2000TgtNode * cblkincl
uint16_t mant[JPEG2000_MAX_DECLEVELS *3]
uint8_t expn[JPEG2000_MAX_DECLEVELS *3]
struct Jpeg2000TgtNode * parent