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/*
* JPEG 2000 encoder and decoder common functions
* Copyright (c) 2007 Kamil Nowosad
* Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com>
* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* JPEG 2000 image encoder and decoder common functions
*/
|
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#include "libavutil/attributes.h" |
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#include "libavutil/avassert.h" |
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#include "libavutil/common.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/mem.h"
#include "avcodec.h" |
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#include "internal.h" |
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#include "jpeg2000.h"
#define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n))
/* tag tree routines */
/* allocate the memory for tag tree */ |
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static int32_t tag_tree_size(int w, int h) |
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{ |
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int64_t res = 0; |
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while (w > 1 || h > 1) { |
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res += w * (int64_t)h; |
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av_assert0(res + 1 < INT32_MAX); |
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w = (w + 1) >> 1;
h = (h + 1) >> 1;
}
return (int32_t)(res + 1);
}
static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h)
{
int pw = w, ph = h;
Jpeg2000TgtNode *res, *t, *t2;
int32_t tt_size;
tt_size = tag_tree_size(w, h);
t = res = av_mallocz_array(tt_size, sizeof(*t));
if (!res)
return NULL;
while (w > 1 || h > 1) {
int i, j;
pw = w;
ph = h;
w = (w + 1) >> 1;
h = (h + 1) >> 1;
t2 = t + pw * ph;
for (i = 0; i < ph; i++)
for (j = 0; j < pw; j++)
t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)];
t = t2;
}
t[0].parent = NULL;
return res;
}
|
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static void tag_tree_zero(Jpeg2000TgtNode *t, int w, int h)
{
int i, siz = tag_tree_size(w, h);
for (i = 0; i < siz; i++) {
t[i].val = 0;
t[i].vis = 0;
}
}
|
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uint8_t ff_jpeg2000_sigctxno_lut[256][4];
static int getsigctxno(int flag, int bandno)
{
int h, v, d;
h = ((flag & JPEG2000_T1_SIG_E) ? 1 : 0) +
((flag & JPEG2000_T1_SIG_W) ? 1 : 0);
v = ((flag & JPEG2000_T1_SIG_N) ? 1 : 0) +
((flag & JPEG2000_T1_SIG_S) ? 1 : 0);
d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) +
((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) +
((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) +
((flag & JPEG2000_T1_SIG_SW) ? 1 : 0); |
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|
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if (bandno < 3) { |
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if (bandno == 1)
FFSWAP(int, h, v); |
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if (h == 2) return 8; |
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if (h == 1) { |
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if (v >= 1) return 7;
if (d >= 1) return 6; |
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return 5;
} |
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if (v == 2) return 4;
if (v == 1) return 3;
if (d >= 2) return 2;
if (d == 1) return 1; |
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} else { |
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if (d >= 3) return 8; |
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if (d == 2) { |
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if (h+v >= 1) return 7; |
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return 6;
} |
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if (d == 1) { |
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if (h+v >= 2) return 5;
if (h+v == 1) return 4; |
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return 3;
} |
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if (h+v >= 2) return 2;
if (h+v == 1) return 1; |
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}
return 0;
}
uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16];
static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } };
static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } };
static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } };
static int getsgnctxno(int flag, uint8_t *xorbit)
{
int vcontrib, hcontrib;
hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0]
[flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1;
vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0]
[flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1;
*xorbit = xorbittab[hcontrib][vcontrib];
return ctxlbltab[hcontrib][vcontrib];
}
|
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void av_cold ff_jpeg2000_init_tier1_luts(void) |
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{
int i, j;
for (i = 0; i < 256; i++)
for (j = 0; j < 4; j++)
ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j);
for (i = 0; i < 16; i++)
for (j = 0; j < 16; j++)
ff_jpeg2000_sgnctxno_lut[i][j] =
getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]);
}
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y,
int negative)
{
x++;
y++; |
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t1->flags[(y) * t1->stride + x] |= JPEG2000_T1_SIG; |
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if (negative) { |
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t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W;
t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E;
t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N;
t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S; |
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} else { |
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t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W;
t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E;
t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N;
t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S; |
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} |
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t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_NW;
t1->flags[(y + 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_NE;
t1->flags[(y - 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_SW;
t1->flags[(y - 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_SE; |
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}
|
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// static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } }; (unused) |
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|
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static void init_band_stepsize(AVCodecContext *avctx,
Jpeg2000Band *band,
Jpeg2000CodingStyle *codsty,
Jpeg2000QuantStyle *qntsty,
int bandno, int gbandno, int reslevelno,
int cbps) |
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{
/* TODO: Implementation of quantization step not finished,
* see ISO/IEC 15444-1:2002 E.1 and A.6.4. */
switch (qntsty->quantsty) {
uint8_t gain;
case JPEG2000_QSTY_NONE:
/* TODO: to verify. No quantization in this case */
band->f_stepsize = 1;
break;
case JPEG2000_QSTY_SI:
/*TODO: Compute formula to implement. */ |
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// numbps = cbps +
// lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)];
// band->f_stepsize = SHL(2048 + qntsty->mant[gbandno],
// 2 + numbps - qntsty->expn[gbandno]);
// break; |
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case JPEG2000_QSTY_SE:
/* Exponent quantization step.
* Formula:
* delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11))
* R_b = R_I + log2 (gain_b )
* see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */
gain = cbps; |
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band->f_stepsize = ff_exp2fi(gain - qntsty->expn[gbandno]); |
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band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0;
break;
default:
band->f_stepsize = 0;
av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n");
break;
} |
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if (codsty->transform != FF_DWT53) {
int lband = 0;
switch (bandno + (reslevelno > 0)) {
case 1:
case 2:
band->f_stepsize *= F_LFTG_X * 2;
lband = 1;
break;
case 3:
band->f_stepsize *= F_LFTG_X * F_LFTG_X * 4;
break;
}
if (codsty->transform == FF_DWT97) {
band->f_stepsize *= pow(F_LFTG_K, 2*(codsty->nreslevels2decode - reslevelno) + lband - 2);
}
}
|
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if (band->f_stepsize > (INT_MAX >> 15)) {
band->f_stepsize = 0;
av_log(avctx, AV_LOG_ERROR, "stepsize out of range\n");
}
|
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band->i_stepsize = band->f_stepsize * (1 << 15);
|
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/* FIXME: In OpenJPEG code stepsize = stepsize * 0.5. Why? |
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* If not set output of entropic decoder is not correct. */
if (!av_codec_is_encoder(avctx->codec))
band->f_stepsize *= 0.5; |
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}
|
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static int init_prec(Jpeg2000Band *band,
Jpeg2000ResLevel *reslevel,
Jpeg2000Component *comp,
int precno, int bandno, int reslevelno,
int log2_band_prec_width,
int log2_band_prec_height)
{
Jpeg2000Prec *prec = band->prec + precno;
int nb_codeblocks, cblkno;
|
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prec->decoded_layers = 0;
|
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/* TODO: Explain formula for JPEG200 DCINEMA. */
/* TODO: Verify with previous count of codeblocks per band */
/* Compute P_x0 */ |
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prec->coord[0][0] = ((band->coord[0][0] >> log2_band_prec_width) + precno % reslevel->num_precincts_x) * |
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(1 << log2_band_prec_width);
/* Compute P_y0 */ |
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prec->coord[1][0] = ((band->coord[1][0] >> log2_band_prec_height) + precno / reslevel->num_precincts_x) * |
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(1 << log2_band_prec_height);
/* Compute P_x1 */
prec->coord[0][1] = prec->coord[0][0] +
(1 << log2_band_prec_width); |
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prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]); |
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prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]);
/* Compute P_y1 */
prec->coord[1][1] = prec->coord[1][0] +
(1 << log2_band_prec_height); |
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prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]); |
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prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]);
prec->nb_codeblocks_width = |
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ff_jpeg2000_ceildivpow2(prec->coord[0][1],
band->log2_cblk_width)
- (prec->coord[0][0] >> band->log2_cblk_width); |
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prec->nb_codeblocks_height = |
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ff_jpeg2000_ceildivpow2(prec->coord[1][1],
band->log2_cblk_height)
- (prec->coord[1][0] >> band->log2_cblk_height);
|
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/* Tag trees initialization */
prec->cblkincl =
ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,
prec->nb_codeblocks_height);
if (!prec->cblkincl)
return AVERROR(ENOMEM);
prec->zerobits =
ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width,
prec->nb_codeblocks_height);
if (!prec->zerobits)
return AVERROR(ENOMEM);
|
| b2a72e8a |
if (prec->nb_codeblocks_width * (uint64_t)prec->nb_codeblocks_height > INT_MAX) {
prec->cblk = NULL;
return AVERROR(ENOMEM);
} |
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nb_codeblocks = prec->nb_codeblocks_width * prec->nb_codeblocks_height;
prec->cblk = av_mallocz_array(nb_codeblocks, sizeof(*prec->cblk));
if (!prec->cblk)
return AVERROR(ENOMEM);
for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
Jpeg2000Cblk *cblk = prec->cblk + cblkno; |
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int Cx0, Cy0; |
| 570fcaf3 |
/* Compute coordinates of codeblocks */
/* Compute Cx0*/ |
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Cx0 = ((prec->coord[0][0]) >> band->log2_cblk_width) << band->log2_cblk_width; |
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Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width);
cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]);
/* Compute Cy0*/ |
| b2a72e8a |
Cy0 = ((prec->coord[1][0]) >> band->log2_cblk_height) << band->log2_cblk_height; |
| 570fcaf3 |
Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height);
cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]);
/* Compute Cx1 */
cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width),
prec->coord[0][1]);
/* Compute Cy1 */
cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height),
prec->coord[1][1]);
/* Update code-blocks coordinates according sub-band position */
if ((bandno + !!reslevelno) & 1) {
cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] -
comp->reslevel[reslevelno-1].coord[0][0];
cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] -
comp->reslevel[reslevelno-1].coord[0][0];
}
if ((bandno + !!reslevelno) & 2) {
cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] -
comp->reslevel[reslevelno-1].coord[1][0];
cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] -
comp->reslevel[reslevelno-1].coord[1][0];
}
cblk->lblock = 3;
cblk->length = 0;
cblk->npasses = 0;
}
return 0;
}
|
| 95a41311 |
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)
{
Jpeg2000Band *band = reslevel->band + bandno;
uint8_t log2_band_prec_width, log2_band_prec_height;
int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5 |
| 570fcaf3 |
int precno; |
| 95a41311 |
int nb_precincts; |
| 570fcaf3 |
int i, j, ret; |
| 95a41311 |
init_band_stepsize(avctx, band, codsty, qntsty, bandno, gbandno, reslevelno, cbps); |
| 7fb93eae |
/* computation of tbx_0, tbx_1, tby_0, tby_1
* see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1
* codeblock width and height is computed for
* DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */
if (reslevelno == 0) {
/* for reslevelno = 0, only one band, x0_b = y0_b = 0 */
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
band->coord[i][j] = |
| 054ce2d6 |
ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], |
| 7fb93eae |
declvl - 1);
log2_band_prec_width = reslevel->log2_prec_width;
log2_band_prec_height = reslevel->log2_prec_height;
/* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
reslevel->log2_prec_width);
band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
reslevel->log2_prec_height);
} else {
/* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */
/* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
/* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */
band->coord[i][j] = |
| 054ce2d6 |
ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] -
(((bandno + 1 >> i) & 1LL) << declvl - 1), |
| 7fb93eae |
declvl);
/* TODO: Manage case of 3 band offsets here or
* in coding/decoding function? */
/* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */
band->log2_cblk_width = FFMIN(codsty->log2_cblk_width,
reslevel->log2_prec_width - 1);
band->log2_cblk_height = FFMIN(codsty->log2_cblk_height,
reslevel->log2_prec_height - 1);
log2_band_prec_width = reslevel->log2_prec_width - 1;
log2_band_prec_height = reslevel->log2_prec_height - 1;
}
|
| 054ce2d6 |
if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y > INT_MAX) {
band->prec = NULL;
return AVERROR(ENOMEM);
} |
| 7fb93eae |
nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y;
band->prec = av_mallocz_array(nb_precincts, sizeof(*band->prec));
if (!band->prec)
return AVERROR(ENOMEM);
for (precno = 0; precno < nb_precincts; precno++) { |
| 570fcaf3 |
ret = init_prec(band, reslevel, comp,
precno, bandno, reslevelno,
log2_band_prec_width, log2_band_prec_height);
if (ret < 0)
return ret; |
| 7fb93eae |
}
return 0;
}
|
| c81a7063 |
int ff_jpeg2000_init_component(Jpeg2000Component *comp,
Jpeg2000CodingStyle *codsty,
Jpeg2000QuantStyle *qntsty,
int cbps, int dx, int dy,
AVCodecContext *avctx)
{
int reslevelno, bandno, gbandno = 0, ret, i, j; |
| efc2df2e |
uint32_t csize; |
| c81a7063 |
|
| 6e9bfc19 |
if (codsty->nreslevels2decode <= 0) {
av_log(avctx, AV_LOG_ERROR, "nreslevels2decode %d invalid or uninitialized\n", codsty->nreslevels2decode); |
| 78962d3d |
return AVERROR_INVALIDDATA; |
| 6e9bfc19 |
}
|
| c81a7063 |
if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,
codsty->nreslevels2decode - 1,
codsty->transform))
return ret; |
| 016fd413 |
if (av_image_check_size(comp->coord[0][1] - comp->coord[0][0],
comp->coord[1][1] - comp->coord[1][0], 0, avctx))
return AVERROR_INVALIDDATA; |
| c81a7063 |
csize = (comp->coord[0][1] - comp->coord[0][0]) *
(comp->coord[1][1] - comp->coord[1][0]); |
| 0eb7de19 |
if (comp->coord[0][1] - comp->coord[0][0] > 32768 ||
comp->coord[1][1] - comp->coord[1][0] > 32768) { |
| a1a8cbcb |
av_log(avctx, AV_LOG_ERROR, "component size too large\n");
return AVERROR_PATCHWELCOME;
} |
| c81a7063 |
|
| 8bedbb82 |
if (codsty->transform == FF_DWT97) { |
| 29d147c9 |
csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->f_data); |
| 8bedbb82 |
comp->i_data = NULL; |
| e54f4510 |
comp->f_data = av_mallocz_array(csize, sizeof(*comp->f_data)); |
| 8bedbb82 |
if (!comp->f_data)
return AVERROR(ENOMEM);
} else { |
| 29d147c9 |
csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->i_data); |
| 8bedbb82 |
comp->f_data = NULL; |
| e54f4510 |
comp->i_data = av_mallocz_array(csize, sizeof(*comp->i_data)); |
| 8bedbb82 |
if (!comp->i_data)
return AVERROR(ENOMEM);
} |
| 10306e9c |
comp->reslevel = av_mallocz_array(codsty->nreslevels, sizeof(*comp->reslevel)); |
| c81a7063 |
if (!comp->reslevel)
return AVERROR(ENOMEM);
/* LOOP on resolution levels */
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
/* Compute borders for each resolution level.
* Computation of trx_0, trx_1, try_0 and try_1.
* see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
reslevel->coord[i][j] =
ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1);
// update precincts size: 2^n value
reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno];
reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno]; |
| 64e034da |
if (!reslevel->log2_prec_width || !reslevel->log2_prec_height) {
return AVERROR_INVALIDDATA;
} |
| c81a7063 |
/* Number of bands for each resolution level */
if (reslevelno == 0)
reslevel->nbands = 1;
else
reslevel->nbands = 3;
|
| 88f2586a |
/* Number of precincts which span the tile for resolution level reslevelno |
| c81a7063 |
* see B.6 in ISO/IEC 15444-1:2002 eq. B-16
* num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width)
* num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width)
* for Dcinema profiles in JPEG 2000
* num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -|
* num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */
if (reslevel->coord[0][1] == reslevel->coord[0][0])
reslevel->num_precincts_x = 0;
else
reslevel->num_precincts_x =
ff_jpeg2000_ceildivpow2(reslevel->coord[0][1],
reslevel->log2_prec_width) -
(reslevel->coord[0][0] >> reslevel->log2_prec_width);
if (reslevel->coord[1][1] == reslevel->coord[1][0])
reslevel->num_precincts_y = 0;
else
reslevel->num_precincts_y =
ff_jpeg2000_ceildivpow2(reslevel->coord[1][1],
reslevel->log2_prec_height) -
(reslevel->coord[1][0] >> reslevel->log2_prec_height);
|
| 10306e9c |
reslevel->band = av_mallocz_array(reslevel->nbands, sizeof(*reslevel->band)); |
| c81a7063 |
if (!reslevel->band)
return AVERROR(ENOMEM);
|
| 6887e412 |
if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y * reslevel->nbands > avctx->max_pixels / sizeof(*reslevel->band->prec))
return AVERROR(ENOMEM);
|
| c81a7063 |
for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) { |
| 7fb93eae |
ret = init_band(avctx, reslevel,
comp, codsty, qntsty,
bandno, gbandno, reslevelno,
cbps, dx, dy);
if (ret < 0)
return ret; |
| c81a7063 |
}
}
return 0;
}
|
| 62d00aa2 |
void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
{
int reslevelno, bandno, cblkno, precno;
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
for (bandno = 0; bandno < rlevel->nbands; bandno++) {
Jpeg2000Band *band = rlevel->band + bandno;
for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) {
Jpeg2000Prec *prec = band->prec + precno;
tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height);
tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height);
for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) {
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
cblk->length = 0;
cblk->lblock = 3;
}
}
}
}
}
|
| c81a7063 |
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty)
{
int reslevelno, bandno, precno; |
| daeb4e30 |
for (reslevelno = 0;
comp->reslevel && reslevelno < codsty->nreslevels;
reslevelno++) { |
| 10306e9c |
Jpeg2000ResLevel *reslevel;
if (!comp->reslevel)
continue; |
| c81a7063 |
|
| 10306e9c |
reslevel = comp->reslevel + reslevelno; |
| c81a7063 |
for (bandno = 0; bandno < reslevel->nbands; bandno++) { |
| 10306e9c |
Jpeg2000Band *band;
if (!reslevel->band)
continue;
band = reslevel->band + bandno; |
| c81a7063 |
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) { |
| 97511bc7 |
if (band->prec) {
Jpeg2000Prec *prec = band->prec + precno; |
| 3d5822d9 |
int nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
|
| 97511bc7 |
av_freep(&prec->zerobits);
av_freep(&prec->cblkincl); |
| 3d5822d9 |
if (prec->cblk) {
int cblkno;
for (cblkno = 0; cblkno < nb_code_blocks; cblkno ++) {
Jpeg2000Cblk *cblk = &prec->cblk[cblkno];
av_freep(&cblk->data); |
| b5587fd2 |
av_freep(&cblk->passes); |
| 42274db1 |
av_freep(&cblk->lengthinc);
av_freep(&cblk->data_start); |
| 3d5822d9 |
}
av_freep(&prec->cblk);
} |
| 912ce9dd |
} |
| 9e477a37 |
} |
| c81a7063 |
av_freep(&band->prec);
}
av_freep(&reslevel->band);
}
ff_dwt_destroy(&comp->dwt);
av_freep(&comp->reslevel); |
| 8bedbb82 |
av_freep(&comp->i_data);
av_freep(&comp->f_data); |
| c81a7063 |
} |