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FFmpeg/libavcodec/j2kenc.c

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/*
* JPEG2000 image encoder
* Copyright (c) 2007 Kamil Nowosad
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* 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.
*
* FFmpeg is distributed in the hope that it will be useful,
* 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
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* **********************************************************************************************************************
*
*
*
* This source code incorporates work covered by the following copyright and
* permission notice:
*
* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2007, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
* Copyright (c) 2005, Herve Drolon, FreeImage Team
* Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
* Copyright (c) 2020, Gautam Ramakrishnan <gautamramk@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* JPEG2000 image encoder
* @file
* @author Kamil Nowosad
*/
#include <float.h>
#include "avcodec.h"
#include "internal.h"
#include "bytestream.h"
#include "jpeg2000.h"
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#define NMSEDEC_BITS 7
#define NMSEDEC_FRACBITS (NMSEDEC_BITS-1)
#define WMSEDEC_SHIFT 13 ///< must be >= 13
#define LAMBDA_SCALE (100000000LL << (WMSEDEC_SHIFT - 13))
#define CODEC_JP2 1
#define CODEC_J2K 0
static int lut_nmsedec_ref [1<<NMSEDEC_BITS],
lut_nmsedec_ref0[1<<NMSEDEC_BITS],
lut_nmsedec_sig [1<<NMSEDEC_BITS],
lut_nmsedec_sig0[1<<NMSEDEC_BITS];
static const int dwt_norms[2][4][10] = { // [dwt_type][band][rlevel] (multiplied by 10000)
{{10000, 19650, 41770, 84030, 169000, 338400, 676900, 1353000, 2706000, 5409000},
{20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
{20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
{20800, 38650, 83070, 171800, 347100, 695900, 1393000, 2786000, 5572000}},
{{10000, 15000, 27500, 53750, 106800, 213400, 426700, 853300, 1707000, 3413000},
{10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
{10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
{ 7186, 9218, 15860, 30430, 60190, 120100, 240000, 479700, 959300}}
};
typedef struct {
Jpeg2000Component *comp;
double *layer_rates;
} Jpeg2000Tile;
typedef struct {
AVClass *class;
AVCodecContext *avctx;
const AVFrame *picture;
int width, height; ///< image width and height
uint8_t cbps[4]; ///< bits per sample in particular components
int chroma_shift[2];
uint8_t planar;
int ncomponents;
int tile_width, tile_height; ///< tile size
int numXtiles, numYtiles;
uint8_t *buf_start;
uint8_t *buf;
uint8_t *buf_end;
int bit_index;
int64_t lambda;
Jpeg2000CodingStyle codsty;
Jpeg2000QuantStyle qntsty;
Jpeg2000Tile *tile;
int layer_rates[100];
uint8_t compression_rate_enc; ///< Is compression done using compression ratio?
int format;
int pred;
int sop;
int eph;
int prog;
int nlayers;
char *lr_str;
} Jpeg2000EncoderContext;
/* debug */
#if 0
#undef ifprintf
#undef printf
static void nspaces(FILE *fd, int n)
{
while(n--) putc(' ', fd);
}
static void printcomp(Jpeg2000Component *comp)
{
int i;
for (i = 0; i < comp->y1 - comp->y0; i++)
ff_jpeg2000_printv(comp->i_data + i * (comp->x1 - comp->x0), comp->x1 - comp->x0);
}
static void dump(Jpeg2000EncoderContext *s, FILE *fd)
{
int tileno, compno, reslevelno, bandno, precno;
fprintf(fd, "XSiz = %d, YSiz = %d, tile_width = %d, tile_height = %d\n"
"numXtiles = %d, numYtiles = %d, ncomponents = %d\n"
"tiles:\n",
s->width, s->height, s->tile_width, s->tile_height,
s->numXtiles, s->numYtiles, s->ncomponents);
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
Jpeg2000Tile *tile = s->tile + tileno;
nspaces(fd, 2);
fprintf(fd, "tile %d:\n", tileno);
for(compno = 0; compno < s->ncomponents; compno++){
Jpeg2000Component *comp = tile->comp + compno;
nspaces(fd, 4);
fprintf(fd, "component %d:\n", compno);
nspaces(fd, 4);
fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d\n",
comp->x0, comp->x1, comp->y0, comp->y1);
for(reslevelno = 0; reslevelno < s->nreslevels; reslevelno++){
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
nspaces(fd, 6);
fprintf(fd, "reslevel %d:\n", reslevelno);
nspaces(fd, 6);
fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d, nbands = %d\n",
reslevel->x0, reslevel->x1, reslevel->y0,
reslevel->y1, reslevel->nbands);
for(bandno = 0; bandno < reslevel->nbands; bandno++){
Jpeg2000Band *band = reslevel->band + bandno;
nspaces(fd, 8);
fprintf(fd, "band %d:\n", bandno);
nspaces(fd, 8);
fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d,"
"codeblock_width = %d, codeblock_height = %d cblknx = %d cblkny = %d\n",
band->x0, band->x1,
band->y0, band->y1,
band->codeblock_width, band->codeblock_height,
band->cblknx, band->cblkny);
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
Jpeg2000Prec *prec = band->prec + precno;
nspaces(fd, 10);
fprintf(fd, "prec %d:\n", precno);
nspaces(fd, 10);
fprintf(fd, "xi0 = %d, xi1 = %d, yi0 = %d, yi1 = %d\n",
prec->xi0, prec->xi1, prec->yi0, prec->yi1);
}
}
}
}
}
}
#endif
/* bitstream routines */
/** put n times val bit */
static void put_bits(Jpeg2000EncoderContext *s, int val, int n) // TODO: optimize
{
while (n-- > 0){
if (s->bit_index == 8)
{
s->bit_index = *s->buf == 0xff;
*(++s->buf) = 0;
}
*s->buf |= val << (7 - s->bit_index++);
}
}
/** put n least significant bits of a number num */
static void put_num(Jpeg2000EncoderContext *s, int num, int n)
{
while(--n >= 0)
put_bits(s, (num >> n) & 1, 1);
}
/** flush the bitstream */
static void j2k_flush(Jpeg2000EncoderContext *s)
{
if (s->bit_index){
s->bit_index = 0;
s->buf++;
}
}
/* tag tree routines */
/** code the value stored in node */
static void tag_tree_code(Jpeg2000EncoderContext *s, Jpeg2000TgtNode *node, int threshold)
{
Jpeg2000TgtNode *stack[30];
int sp = -1, curval = 0;
while(node->parent){
stack[++sp] = node;
node = node->parent;
}
while (1) {
if (curval > node->temp_val)
node->temp_val = curval;
else {
curval = node->temp_val;
}
if (node->val >= threshold) {
put_bits(s, 0, threshold - curval);
curval = threshold;
} else {
put_bits(s, 0, node->val - curval);
curval = node->val;
if (!node->vis) {
put_bits(s, 1, 1);
node->vis = 1;
}
}
node->temp_val = curval;
if (sp < 0)
break;
node = stack[sp--];
}
}
/** update the value in node */
static void tag_tree_update(Jpeg2000TgtNode *node)
{
int lev = 0;
while (node->parent){
if (node->parent->val <= node->val)
break;
node->parent->val = node->val;
node = node->parent;
lev++;
}
}
static int put_siz(Jpeg2000EncoderContext *s)
{
int i;
if (s->buf_end - s->buf < 40 + 3 * s->ncomponents)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_SIZ);
bytestream_put_be16(&s->buf, 38 + 3 * s->ncomponents); // Lsiz
bytestream_put_be16(&s->buf, 0); // Rsiz
bytestream_put_be32(&s->buf, s->width); // width
bytestream_put_be32(&s->buf, s->height); // height
bytestream_put_be32(&s->buf, 0); // X0Siz
bytestream_put_be32(&s->buf, 0); // Y0Siz
bytestream_put_be32(&s->buf, s->tile_width); // XTSiz
bytestream_put_be32(&s->buf, s->tile_height); // YTSiz
bytestream_put_be32(&s->buf, 0); // XT0Siz
bytestream_put_be32(&s->buf, 0); // YT0Siz
bytestream_put_be16(&s->buf, s->ncomponents); // CSiz
for (i = 0; i < s->ncomponents; i++){ // Ssiz_i XRsiz_i, YRsiz_i
bytestream_put_byte(&s->buf, s->cbps[i] - 1);
bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[0]:1);
bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[1]:1);
}
return 0;
}
static int put_cod(Jpeg2000EncoderContext *s)
{
Jpeg2000CodingStyle *codsty = &s->codsty;
uint8_t scod = 0;
if (s->buf_end - s->buf < 14)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_COD);
bytestream_put_be16(&s->buf, 12); // Lcod
if (s->sop)
scod |= JPEG2000_CSTY_SOP;
if (s->eph)
scod |= JPEG2000_CSTY_EPH;
bytestream_put_byte(&s->buf, scod); // Scod
// SGcod
bytestream_put_byte(&s->buf, s->prog); // progression level
bytestream_put_be16(&s->buf, s->nlayers); // num of layers
if(s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){
bytestream_put_byte(&s->buf, 0); // unspecified
}else{
bytestream_put_byte(&s->buf, 0); // unspecified
}
// SPcod
bytestream_put_byte(&s->buf, codsty->nreslevels - 1); // num of decomp. levels
bytestream_put_byte(&s->buf, codsty->log2_cblk_width-2); // cblk width
bytestream_put_byte(&s->buf, codsty->log2_cblk_height-2); // cblk height
bytestream_put_byte(&s->buf, 0); // cblk style
bytestream_put_byte(&s->buf, codsty->transform == FF_DWT53); // transformation
return 0;
}
static int put_qcd(Jpeg2000EncoderContext *s, int compno)
{
int i, size;
Jpeg2000CodingStyle *codsty = &s->codsty;
Jpeg2000QuantStyle *qntsty = &s->qntsty;
if (qntsty->quantsty == JPEG2000_QSTY_NONE)
size = 4 + 3 * (codsty->nreslevels-1);
else // QSTY_SE
size = 5 + 6 * (codsty->nreslevels-1);
if (s->buf_end - s->buf < size + 2)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_QCD);
bytestream_put_be16(&s->buf, size); // LQcd
bytestream_put_byte(&s->buf, (qntsty->nguardbits << 5) | qntsty->quantsty); // Sqcd
if (qntsty->quantsty == JPEG2000_QSTY_NONE)
for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
bytestream_put_byte(&s->buf, qntsty->expn[i] << 3);
else // QSTY_SE
for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
bytestream_put_be16(&s->buf, (qntsty->expn[i] << 11) | qntsty->mant[i]);
return 0;
}
static int put_com(Jpeg2000EncoderContext *s, int compno)
{
int size = 4 + strlen(LIBAVCODEC_IDENT);
if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT)
return 0;
if (s->buf_end - s->buf < size + 2)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_COM);
bytestream_put_be16(&s->buf, size);
bytestream_put_be16(&s->buf, 1); // General use (ISO/IEC 8859-15 (Latin) values)
bytestream_put_buffer(&s->buf, LIBAVCODEC_IDENT, strlen(LIBAVCODEC_IDENT));
return 0;
}
static uint8_t *put_sot(Jpeg2000EncoderContext *s, int tileno)
{
uint8_t *psotptr;
if (s->buf_end - s->buf < 12)
return NULL;
bytestream_put_be16(&s->buf, JPEG2000_SOT);
bytestream_put_be16(&s->buf, 10); // Lsot
bytestream_put_be16(&s->buf, tileno); // Isot
psotptr = s->buf;
bytestream_put_be32(&s->buf, 0); // Psot (filled in later)
bytestream_put_byte(&s->buf, 0); // TPsot
bytestream_put_byte(&s->buf, 1); // TNsot
return psotptr;
}
static void compute_rates(Jpeg2000EncoderContext* s)
{
int i, j;
int layno, compno;
for (i = 0; i < s->numYtiles; i++) {
for (j = 0; j < s->numXtiles; j++) {
Jpeg2000Tile *tile = &s->tile[s->numXtiles * i + j];
for (compno = 0; compno < s->ncomponents; compno++) {
int tilew = tile->comp[compno].coord[0][1] - tile->comp[compno].coord[0][0];
int tileh = tile->comp[compno].coord[1][1] - tile->comp[compno].coord[1][0];
int scale = (compno?1 << s->chroma_shift[0]:1) * (compno?1 << s->chroma_shift[1]:1);
for (layno = 0; layno < s->nlayers; layno++) {
if (s->layer_rates[layno] > 0) {
tile->layer_rates[layno] += (double)(tilew * tileh) * s->ncomponents * s->cbps[compno] /
(double)(s->layer_rates[layno] * 8 * scale);
} else {
tile->layer_rates[layno] = 0.0;
}
}
}
}
}
}
/**
* compute the sizes of tiles, resolution levels, bands, etc.
* allocate memory for them
* divide the input image into tile-components
*/
static int init_tiles(Jpeg2000EncoderContext *s)
{
int tileno, tilex, tiley, compno;
Jpeg2000CodingStyle *codsty = &s->codsty;
Jpeg2000QuantStyle *qntsty = &s->qntsty;
s->numXtiles = ff_jpeg2000_ceildiv(s->width, s->tile_width);
s->numYtiles = ff_jpeg2000_ceildiv(s->height, s->tile_height);
s->tile = av_calloc(s->numXtiles, s->numYtiles * sizeof(Jpeg2000Tile));
if (!s->tile)
return AVERROR(ENOMEM);
for (tileno = 0, tiley = 0; tiley < s->numYtiles; tiley++)
for (tilex = 0; tilex < s->numXtiles; tilex++, tileno++){
Jpeg2000Tile *tile = s->tile + tileno;
tile->comp = av_mallocz_array(s->ncomponents, sizeof(Jpeg2000Component));
if (!tile->comp)
return AVERROR(ENOMEM);
tile->layer_rates = av_mallocz_array(s->nlayers, sizeof(*tile->layer_rates));
if (!tile->layer_rates)
return AVERROR(ENOMEM);
for (compno = 0; compno < s->ncomponents; compno++){
Jpeg2000Component *comp = tile->comp + compno;
int ret, i, j;
comp->coord[0][0] = comp->coord_o[0][0] = tilex * s->tile_width;
comp->coord[0][1] = comp->coord_o[0][1] = FFMIN((tilex+1)*s->tile_width, s->width);
comp->coord[1][0] = comp->coord_o[1][0] = tiley * s->tile_height;
comp->coord[1][1] = comp->coord_o[1][1] = FFMIN((tiley+1)*s->tile_height, s->height);
if (compno > 0)
for (i = 0; i < 2; i++)
for (j = 0; j < 2; j++)
comp->coord[i][j] = comp->coord_o[i][j] = ff_jpeg2000_ceildivpow2(comp->coord[i][j], s->chroma_shift[i]);
if ((ret = ff_jpeg2000_init_component(comp,
codsty,
qntsty,
s->cbps[compno],
compno?1<<s->chroma_shift[0]:1,
compno?1<<s->chroma_shift[1]:1,
s->avctx
)) < 0)
return ret;
}
}
compute_rates(s);
return 0;
}
#define COPY_FRAME(D, PIXEL) \
static void copy_frame_ ##D(Jpeg2000EncoderContext *s) \
{ \
int tileno, compno, i, y, x; \
PIXEL *line; \
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ \
Jpeg2000Tile *tile = s->tile + tileno; \
if (s->planar){ \
for (compno = 0; compno < s->ncomponents; compno++){ \
Jpeg2000Component *comp = tile->comp + compno; \
int *dst = comp->i_data; \
int cbps = s->cbps[compno]; \
line = (PIXEL*)s->picture->data[compno] \
+ comp->coord[1][0] * (s->picture->linesize[compno] / sizeof(PIXEL)) \
+ comp->coord[0][0]; \
for (y = comp->coord[1][0]; y < comp->coord[1][1]; y++){ \
PIXEL *ptr = line; \
for (x = comp->coord[0][0]; x < comp->coord[0][1]; x++) \
*dst++ = *ptr++ - (1 << (cbps - 1)); \
line += s->picture->linesize[compno] / sizeof(PIXEL); \
} \
} \
} else{ \
line = (PIXEL*)s->picture->data[0] + tile->comp[0].coord[1][0] * (s->picture->linesize[0] / sizeof(PIXEL)) \
+ tile->comp[0].coord[0][0] * s->ncomponents; \
\
i = 0; \
for (y = tile->comp[0].coord[1][0]; y < tile->comp[0].coord[1][1]; y++){ \
PIXEL *ptr = line; \
for (x = tile->comp[0].coord[0][0]; x < tile->comp[0].coord[0][1]; x++, i++){ \
for (compno = 0; compno < s->ncomponents; compno++){ \
int cbps = s->cbps[compno]; \
tile->comp[compno].i_data[i] = *ptr++ - (1 << (cbps - 1)); \
} \
} \
line += s->picture->linesize[0] / sizeof(PIXEL); \
} \
} \
} \
}
COPY_FRAME(8, uint8_t)
COPY_FRAME(16, uint16_t)
static void init_quantization(Jpeg2000EncoderContext *s)
{
int compno, reslevelno, bandno;
Jpeg2000QuantStyle *qntsty = &s->qntsty;
Jpeg2000CodingStyle *codsty = &s->codsty;
for (compno = 0; compno < s->ncomponents; compno++){
int gbandno = 0;
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
int nbands, lev = codsty->nreslevels - reslevelno - 1;
nbands = reslevelno ? 3 : 1;
for (bandno = 0; bandno < nbands; bandno++, gbandno++){
int expn, mant = 0;
if (codsty->transform == FF_DWT97_INT){
int bandpos = bandno + (reslevelno>0),
ss = 81920000 / dwt_norms[0][bandpos][lev],
log = av_log2(ss);
mant = (11 - log < 0 ? ss >> log - 11 : ss << 11 - log) & 0x7ff;
expn = s->cbps[compno] - log + 13;
} else
expn = ((bandno&2)>>1) + (reslevelno>0) + s->cbps[compno];
qntsty->expn[gbandno] = expn;
qntsty->mant[gbandno] = mant;
}
}
}
}
static void init_luts(void)
{
int i, a,
mask = ~((1<<NMSEDEC_FRACBITS)-1);
for (i = 0; i < (1 << NMSEDEC_BITS); i++){
lut_nmsedec_sig[i] = FFMAX((3 * i << (13 - NMSEDEC_FRACBITS)) - (9 << 11), 0);
lut_nmsedec_sig0[i] = FFMAX((i*i + (1<<NMSEDEC_FRACBITS-1) & mask) << 1, 0);
a = (i >> (NMSEDEC_BITS-2)&2) + 1;
lut_nmsedec_ref[i] = FFMAX((a - 2) * (i << (13 - NMSEDEC_FRACBITS)) +
(1 << 13) - (a * a << 11), 0);
lut_nmsedec_ref0[i] = FFMAX(((i * i - (i << NMSEDEC_BITS) + (1 << 2 * NMSEDEC_FRACBITS) + (1 << (NMSEDEC_FRACBITS - 1))) & mask)
<< 1, 0);
}
}
/* tier-1 routines */
static int getnmsedec_sig(int x, int bpno)
{
if (bpno > NMSEDEC_FRACBITS)
return lut_nmsedec_sig[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
return lut_nmsedec_sig0[x & ((1 << NMSEDEC_BITS) - 1)];
}
static int getnmsedec_ref(int x, int bpno)
{
if (bpno > NMSEDEC_FRACBITS)
return lut_nmsedec_ref[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
return lut_nmsedec_ref0[x & ((1 << NMSEDEC_BITS) - 1)];
}
static void encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
{
int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
for (y0 = 0; y0 < height; y0 += 4)
for (x = 0; x < width; x++)
for (y = y0; y < height && y < y0+4; y++){
if (!(t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG) && (t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG_NB)){
int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno),
bit = t1->data[(y) * t1->stride + x] & mask ? 1 : 0;
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
if (bit){
int xorbit;
int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit);
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit);
*nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15);
}
t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_VIS;
}
}
}
static void encode_refpass(Jpeg2000T1Context *t1, int width, int height, int *nmsedec, int bpno)
{
int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
for (y0 = 0; y0 < height; y0 += 4)
for (x = 0; x < width; x++)
for (y = y0; y < height && y < y0+4; y++)
if ((t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG){
int ctxno = ff_jpeg2000_getrefctxno(t1->flags[(y+1) * t1->stride + x+1]);
*nmsedec += getnmsedec_ref(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0);
t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_REF;
}
}
static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
{
int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
for (y0 = 0; y0 < height; y0 += 4)
for (x = 0; x < width; x++){
if (y0 + 3 < height && !(
(t1->flags[(y0+1) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
(t1->flags[(y0+2) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
(t1->flags[(y0+3) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
(t1->flags[(y0+4) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG))))
{
// aggregation mode
int rlen;
for (rlen = 0; rlen < 4; rlen++)
if (t1->data[(y0+rlen) * t1->stride + x] & mask)
break;
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL, rlen != 4);
if (rlen == 4)
continue;
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen >> 1);
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1);
for (y = y0 + rlen; y < y0 + 4; y++){
if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno);
if (y > y0 + rlen)
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0);
if (t1->data[(y) * t1->stride + x] & mask){ // newly significant
int xorbit;
int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit);
*nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit);
ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15);
}
}
t1->flags[(y+1) * t1->stride + x+1] &= ~JPEG2000_T1_VIS;
}
} else{
for (y = y0; y < y0 + 4 && y < height; y++){
if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){
int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno);
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0);
if (t1->data[(y) * t1->stride + x] & mask){ // newly significant
int xorbit;
int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit);
*nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS);
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit);
ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15);
}
}
t1->flags[(y+1) * t1->stride + x+1] &= ~JPEG2000_T1_VIS;
}
}
}
}
static void encode_cblk(Jpeg2000EncoderContext *s, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, Jpeg2000Tile *tile,
int width, int height, int bandpos, int lev)
{
int pass_t = 2, passno, x, y, max=0, nmsedec, bpno;
int64_t wmsedec = 0;
memset(t1->flags, 0, t1->stride * (height + 2) * sizeof(*t1->flags));
for (y = 0; y < height; y++){
for (x = 0; x < width; x++){
if (t1->data[(y) * t1->stride + x] < 0){
t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_SGN;
t1->data[(y) * t1->stride + x] = -t1->data[(y) * t1->stride + x];
}
max = FFMAX(max, t1->data[(y) * t1->stride + x]);
}
}
if (max == 0){
cblk->nonzerobits = 0;
bpno = 0;
} else{
cblk->nonzerobits = av_log2(max) + 1 - NMSEDEC_FRACBITS;
bpno = cblk->nonzerobits - 1;
}
cblk->data[0] = 0;
ff_mqc_initenc(&t1->mqc, cblk->data + 1);
for (passno = 0; bpno >= 0; passno++){
nmsedec=0;
switch(pass_t){
case 0: encode_sigpass(t1, width, height, bandpos, &nmsedec, bpno);
break;
case 1: encode_refpass(t1, width, height, &nmsedec, bpno);
break;
case 2: encode_clnpass(t1, width, height, bandpos, &nmsedec, bpno);
break;
}
cblk->passes[passno].rate = ff_mqc_flush_to(&t1->mqc, cblk->passes[passno].flushed, &cblk->passes[passno].flushed_len);
cblk->passes[passno].rate -= cblk->passes[passno].flushed_len;
wmsedec += (int64_t)nmsedec << (2*bpno);
cblk->passes[passno].disto = wmsedec;
if (++pass_t == 3){
pass_t = 0;
bpno--;
}
}
cblk->npasses = passno;
cblk->ninclpasses = passno;
if (passno) {
cblk->passes[passno-1].rate = ff_mqc_flush_to(&t1->mqc, cblk->passes[passno-1].flushed, &cblk->passes[passno-1].flushed_len);
cblk->passes[passno-1].rate -= cblk->passes[passno-1].flushed_len;
}
}
/* tier-2 routines: */
static void putnumpasses(Jpeg2000EncoderContext *s, int n)
{
if (n == 1)
put_num(s, 0, 1);
else if (n == 2)
put_num(s, 2, 2);
else if (n <= 5)
put_num(s, 0xc | (n-3), 4);
else if (n <= 36)
put_num(s, 0x1e0 | (n-6), 9);
else
put_num(s, 0xff80 | (n-37), 16);
}
static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, int layno,
int precno, uint8_t *expn, int numgbits, int packetno,
int nlayers)
{
int bandno, empty = 1;
int i;
// init bitstream
*s->buf = 0;
s->bit_index = 0;
if (s->sop) {
bytestream_put_be16(&s->buf, JPEG2000_SOP);
bytestream_put_be16(&s->buf, 4);
bytestream_put_be16(&s->buf, packetno);
}
// header
if (!layno) {
for (bandno = 0; bandno < rlevel->nbands; bandno++) {
Jpeg2000Band *band = rlevel->band + bandno;
if (band->coord[0][0] < band->coord[0][1]
&& band->coord[1][0] < band->coord[1][1]) {
Jpeg2000Prec *prec = band->prec + precno;
int nb_cblks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
int pos;
ff_tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 99);
ff_tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 99);
for (pos = 0; pos < nb_cblks; pos++) {
Jpeg2000Cblk *cblk = &prec->cblk[pos];
prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - cblk->nonzerobits;
cblk->incl = 0;
cblk->lblock = 3;
tag_tree_update(prec->zerobits + pos);
for (i = 0; i < nlayers; i++) {
if (cblk->layers[i].npasses > 0) {
prec->cblkincl[pos].val = i;
break;
}
}
if (i == nlayers)
prec->cblkincl[pos].val = i;
tag_tree_update(prec->cblkincl + pos);
}
}
}
}
// is the packet empty?
for (bandno = 0; bandno < rlevel->nbands; bandno++){
Jpeg2000Band *band = rlevel->band + bandno;
if (band->coord[0][0] < band->coord[0][1]
&& band->coord[1][0] < band->coord[1][1]) {
Jpeg2000Prec *prec = band->prec + precno;
int nb_cblks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
int pos;
for (pos = 0; pos < nb_cblks; pos++) {
Jpeg2000Cblk *cblk = &prec->cblk[pos];
if (cblk->layers[layno].npasses) {
empty = 0;
break;
}
}
if (!empty)
break;
}
}
put_bits(s, !empty, 1);
if (empty){
j2k_flush(s);
if (s->eph)
bytestream_put_be16(&s->buf, JPEG2000_EPH);
return 0;
}
for (bandno = 0; bandno < rlevel->nbands; bandno++) {
Jpeg2000Band *band = rlevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
int yi, xi, pos;
int cblknw = prec->nb_codeblocks_width;
if (band->coord[0][0] == band->coord[0][1]
|| band->coord[1][0] == band->coord[1][1])
continue;
for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++) {
for (xi = 0; xi < cblknw; xi++, pos++){
int llen = 0, length;
Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
if (s->buf_end - s->buf < 20) // approximately
return -1;
// inclusion information
if (!cblk->incl)
tag_tree_code(s, prec->cblkincl + pos, layno + 1);
else {
put_bits(s, cblk->layers[layno].npasses > 0, 1);
}
if (!cblk->layers[layno].npasses)
continue;
// zerobits information
if (!cblk->incl) {
tag_tree_code(s, prec->zerobits + pos, 100);
cblk->incl = 1;
}
// number of passes
putnumpasses(s, cblk->layers[layno].npasses);
length = cblk->layers[layno].data_len;
if (layno == nlayers - 1 && cblk->layers[layno].cum_passes){
length += cblk->passes[cblk->layers[layno].cum_passes-1].flushed_len;
}
if (cblk->lblock + av_log2(cblk->layers[layno].npasses) < av_log2(length) + 1) {
llen = av_log2(length) + 1 - cblk->lblock - av_log2(cblk->layers[layno].npasses);
}
// length of code block
cblk->lblock += llen;
put_bits(s, 1, llen);
put_bits(s, 0, 1);
put_num(s, length, cblk->lblock + av_log2(cblk->layers[layno].npasses));
}
}
}
j2k_flush(s);
if (s->eph) {
bytestream_put_be16(&s->buf, JPEG2000_EPH);
}
for (bandno = 0; bandno < rlevel->nbands; bandno++) {
Jpeg2000Band *band = rlevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
int yi, cblknw = prec->nb_codeblocks_width;
for (yi =0; yi < prec->nb_codeblocks_height; yi++) {
int xi;
for (xi = 0; xi < cblknw; xi++){
Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi;
if (cblk->layers[layno].npasses) {
if (s->buf_end - s->buf < cblk->layers[layno].data_len + 2)
return -1;
bytestream_put_buffer(&s->buf, cblk->layers[layno].data_start + 1, cblk->layers[layno].data_len);
if (layno == nlayers - 1 && cblk->layers[layno].cum_passes) {
bytestream_put_buffer(&s->buf, cblk->passes[cblk->layers[layno].cum_passes-1].flushed,
cblk->passes[cblk->layers[layno].cum_passes-1].flushed_len);
}
}
}
}
}
return 0;
}
static int encode_packets(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno, int nlayers)
{
int compno, reslevelno, layno, ret;
Jpeg2000CodingStyle *codsty = &s->codsty;
Jpeg2000QuantStyle *qntsty = &s->qntsty;
int packetno = 0;
int step_x, step_y;
int x, y;
int tile_coord[2][2];
int col = tileno % s->numXtiles;
int row = tileno / s->numXtiles;
tile_coord[0][0] = col * s->tile_width;
tile_coord[0][1] = FFMIN(tile_coord[0][0] + s->tile_width, s->width);
tile_coord[1][0] = row * s->tile_height;
tile_coord[1][1] = FFMIN(tile_coord[1][0] + s->tile_height, s->height);
av_log(s->avctx, AV_LOG_DEBUG, "tier2\n");
// lay-rlevel-comp-pos progression
switch (s->prog) {
case JPEG2000_PGOD_LRCP:
for (layno = 0; layno < nlayers; layno++) {
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
for (compno = 0; compno < s->ncomponents; compno++){
int precno;
Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno;
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
qntsty->nguardbits, packetno++, nlayers)) < 0)
return ret;
}
}
}
}
break;
case JPEG2000_PGOD_RLCP:
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
for (layno = 0; layno < nlayers; layno++) {
for (compno = 0; compno < s->ncomponents; compno++){
int precno;
Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno;
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
qntsty->nguardbits, packetno++, nlayers)) < 0)
return ret;
}
}
}
}
break;
case JPEG2000_PGOD_RPCL:
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
int precno;
step_x = 30;
step_y = 30;
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
if (reslevelno < codsty->nreslevels) {
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
}
}
step_x = 1<<step_x;
step_y = 1<<step_y;
for (y = tile_coord[1][0]; y < tile_coord[1][1]; y = (y/step_y + 1)*step_y) {
for (x = tile_coord[0][0]; x < tile_coord[0][1]; x = (x/step_x + 1)*step_x) {
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0};
unsigned prcx, prcy;
int trx0, try0;
trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno);
try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno);
if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 ||
(y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height)))))
continue;
if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 ||
(x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width)))))
continue;
// check if a precinct exists
prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width;
prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height;
prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width;
prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height;
precno = prcx + reslevel->num_precincts_x * prcy;
if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) {
av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y);
continue;
}
for (layno = 0; layno < nlayers; layno++) {
if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
qntsty->nguardbits, packetno++, nlayers)) < 0)
return ret;
}
}
}
}
}
break;
case JPEG2000_PGOD_PCRL:
step_x = 32;
step_y = 32;
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
}
}
if (step_x >= 31 || step_y >= 31){
avpriv_request_sample(s->avctx, "PCRL with large step");
return AVERROR_PATCHWELCOME;
}
step_x = 1<<step_x;
step_y = 1<<step_y;
for (y = tile_coord[1][0]; y < tile_coord[1][1]; y = (y/step_y + 1)*step_y) {
for (x = tile_coord[0][0]; x < tile_coord[0][1]; x = (x/step_x + 1)*step_x) {
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0};
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
unsigned prcx, prcy;
int precno;
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
int trx0, try0;
trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno);
try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno);
if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 ||
(y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height)))))
continue;
if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 ||
(x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width)))))
continue;
// check if a precinct exists
prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width;
prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height;
prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width;
prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height;
precno = prcx + reslevel->num_precincts_x * prcy;
if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) {
av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y);
continue;
}
for (layno = 0; layno < nlayers; layno++) {
if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
qntsty->nguardbits, packetno++, nlayers)) < 0)
return ret;
}
}
}
}
}
break;
case JPEG2000_PGOD_CPRL:
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0};
step_x = 32;
step_y = 32;
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
}
if (step_x >= 31 || step_y >= 31){
avpriv_request_sample(s->avctx, "CPRL with large step");
return AVERROR_PATCHWELCOME;
}
step_x = 1<<step_x;
step_y = 1<<step_y;
for (y = tile_coord[1][0]; y < tile_coord[1][1]; y = (y/step_y + 1)*step_y) {
for (x = tile_coord[0][0]; x < tile_coord[0][1]; x = (x/step_x + 1)*step_x) {
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) {
unsigned prcx, prcy;
int precno;
int trx0, try0;
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno);
try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno);
if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 ||
(y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height)))))
continue;
if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 ||
(x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width)))))
continue;
// check if a precinct exists
prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width;
prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height;
prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width;
prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height;
precno = prcx + reslevel->num_precincts_x * prcy;
if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) {
av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y);
continue;
}
for (layno = 0; layno < nlayers; layno++) {
if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
qntsty->nguardbits, packetno++, nlayers)) < 0)
return ret;
}
}
}
}
}
}
av_log(s->avctx, AV_LOG_DEBUG, "after tier2\n");
return 0;
}
static void makelayer(Jpeg2000EncoderContext *s, int layno, double thresh, Jpeg2000Tile* tile, int final)
{
int compno, resno, bandno, precno, cblkno;
int passno;
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = &tile->comp[compno];
for (resno = 0; resno < s->codsty.nreslevels; resno++) {
Jpeg2000ResLevel *reslevel = comp->reslevel + resno;
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
for (bandno = 0; bandno < reslevel->nbands ; bandno++){
Jpeg2000Band *band = reslevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
Jpeg2000Layer *layer = &cblk->layers[layno];
int n;
if (layno == 0) {
cblk->ninclpasses = 0;
}
n = cblk->ninclpasses;
if (thresh < 0) {
n = cblk->npasses;
} else {
for (passno = cblk->ninclpasses; passno < cblk->npasses; passno++) {
int32_t dr;
double dd;
Jpeg2000Pass *pass = &cblk->passes[passno];
if (n == 0) {
dr = pass->rate;
dd = pass->disto;
} else {
dr = pass->rate - cblk->passes[n - 1].rate;
dd = pass->disto - cblk->passes[n-1].disto;
}
if (!dr) {
if (dd != 0.0) {
n = passno + 1;
}
continue;
}
if (thresh - (dd / dr) < DBL_EPSILON)
n = passno + 1;
}
}
layer->npasses = n - cblk->ninclpasses;
layer->cum_passes = n;
if (layer->npasses == 0) {
layer->disto = 0;
layer->data_len = 0;
continue;
}
if (cblk->ninclpasses == 0) {
layer->data_len = cblk->passes[n - 1].rate;
layer->data_start = cblk->data;
layer->disto = cblk->passes[n - 1].disto;
} else {
layer->data_len = cblk->passes[n - 1].rate - cblk->passes[cblk->ninclpasses - 1].rate;
layer->data_start = cblk->data + cblk->passes[cblk->ninclpasses - 1].rate;
layer->disto = cblk->passes[n - 1].disto -
cblk->passes[cblk->ninclpasses - 1].disto;
}
if (final) {
cblk->ninclpasses = n;
}
}
}
}
}
}
}
static void makelayers(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)
{
int precno, compno, reslevelno, bandno, cblkno, lev, passno, layno;
int i;
double min = DBL_MAX;
double max = 0;
double thresh;
int tile_disto = 0;
Jpeg2000CodingStyle *codsty = &s->codsty;
for (compno = 0; compno < s->ncomponents; compno++){
Jpeg2000Component *comp = tile->comp + compno;
for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
for (bandno = 0; bandno < reslevel->nbands ; bandno++){
Jpeg2000Band *band = reslevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
for (passno = 0; passno < cblk->npasses; passno++) {
Jpeg2000Pass *pass = &cblk->passes[passno];
int dr;
double dd, drslope;
tile_disto += pass->disto;
if (passno == 0) {
dr = (int32_t)pass->rate;
dd = pass->disto;
} else {
dr = (int32_t)(pass->rate - cblk->passes[passno - 1].rate);
dd = pass->disto - cblk->passes[passno - 1].disto;
}
if (dr <= 0)
continue;
drslope = dd / dr;
if (drslope < min)
min = drslope;
if (drslope > max)
max = drslope;
}
}
}
}
}
}
for (layno = 0; layno < s->nlayers; layno++) {
double lo = min;
double hi = max;
double stable_thresh = 0.0;
double good_thresh = 0.0;
if (!s->layer_rates[layno]) {
good_thresh = -1.0;
} else {
for (i = 0; i < 128; i++) {
uint8_t *stream_pos = s->buf;
int ret;
thresh = (lo + hi) / 2;
makelayer(s, layno, thresh, tile, 0);
ret = encode_packets(s, tile, (int)(tile - s->tile), layno + 1);
memset(stream_pos, 0, s->buf - stream_pos);
if ((s->buf - stream_pos > ceil(tile->layer_rates[layno])) || ret < 0) {
lo = thresh;
s->buf = stream_pos;
continue;
}
hi = thresh;
stable_thresh = thresh;
s->buf = stream_pos;
}
}
if (good_thresh >= 0.0)
good_thresh = stable_thresh == 0.0 ? thresh : stable_thresh;
makelayer(s, layno, good_thresh, tile, 1);
}
}
static int getcut(Jpeg2000Cblk *cblk, int64_t lambda, int dwt_norm)
{
int passno, res = 0;
for (passno = 0; passno < cblk->npasses; passno++){
int dr;
int64_t dd;
dr = cblk->passes[passno].rate
- (res ? cblk->passes[res-1].rate : 0);
dd = cblk->passes[passno].disto
- (res ? cblk->passes[res-1].disto : 0);
if (((dd * dwt_norm) >> WMSEDEC_SHIFT) * dwt_norm >= dr * lambda)
res = passno+1;
}
return res;
}
static void truncpasses(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile)
{
int precno, compno, reslevelno, bandno, cblkno, lev;
Jpeg2000CodingStyle *codsty = &s->codsty;
for (compno = 0; compno < s->ncomponents; compno++){
Jpeg2000Component *comp = tile->comp + compno;
for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
for (bandno = 0; bandno < reslevel->nbands ; bandno++){
int bandpos = bandno + (reslevelno > 0);
Jpeg2000Band *band = reslevel->band + bandno;
Jpeg2000Prec *prec = band->prec + precno;
for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
cblk->ninclpasses = getcut(cblk, s->lambda,
(int64_t)dwt_norms[codsty->transform == FF_DWT53][bandpos][lev] * (int64_t)band->i_stepsize >> 15);
cblk->layers[0].data_start = cblk->data;
cblk->layers[0].cum_passes = cblk->ninclpasses;
cblk->layers[0].npasses = cblk->ninclpasses;
if (cblk->ninclpasses)
cblk->layers[0].data_len = cblk->passes[cblk->ninclpasses - 1].rate;
}
}
}
}
}
}
static int encode_tile(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno)
{
int compno, reslevelno, bandno, ret;
Jpeg2000T1Context t1;
Jpeg2000CodingStyle *codsty = &s->codsty;
for (compno = 0; compno < s->ncomponents; compno++){
Jpeg2000Component *comp = s->tile[tileno].comp + compno;
t1.stride = (1<<codsty->log2_cblk_width) + 2;
av_log(s->avctx, AV_LOG_DEBUG,"dwt\n");
if ((ret = ff_dwt_encode(&comp->dwt, comp->i_data)) < 0)
return ret;
av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n");
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno;
for (bandno = 0; bandno < reslevel->nbands ; bandno++){
Jpeg2000Band *band = reslevel->band + bandno;
Jpeg2000Prec *prec = band->prec; // we support only 1 precinct per band ATM in the encoder
int cblkx, cblky, cblkno=0, xx0, x0, xx1, y0, yy0, yy1, bandpos;
yy0 = bandno == 0 ? 0 : comp->reslevel[reslevelno-1].coord[1][1] - comp->reslevel[reslevelno-1].coord[1][0];
y0 = yy0;
yy1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[1][0] + 1, band->log2_cblk_height) << band->log2_cblk_height,
band->coord[1][1]) - band->coord[1][0] + yy0;
if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1])
continue;
bandpos = bandno + (reslevelno > 0);
for (cblky = 0; cblky < prec->nb_codeblocks_height; cblky++){
if (reslevelno == 0 || bandno == 1)
xx0 = 0;
else
xx0 = comp->reslevel[reslevelno-1].coord[0][1] - comp->reslevel[reslevelno-1].coord[0][0];
x0 = xx0;
xx1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[0][0] + 1, band->log2_cblk_width) << band->log2_cblk_width,
band->coord[0][1]) - band->coord[0][0] + xx0;
for (cblkx = 0; cblkx < prec->nb_codeblocks_width; cblkx++, cblkno++){
int y, x;
if (codsty->transform == FF_DWT53){
for (y = yy0; y < yy1; y++){
int *ptr = t1.data + (y-yy0)*t1.stride;
for (x = xx0; x < xx1; x++){
*ptr++ = comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] * (1 << NMSEDEC_FRACBITS);
}
}
} else{
for (y = yy0; y < yy1; y++){
int *ptr = t1.data + (y-yy0)*t1.stride;
for (x = xx0; x < xx1; x++){
*ptr = (comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]);
*ptr = (int64_t)*ptr * (int64_t)(16384 * 65536 / band->i_stepsize) >> 15 - NMSEDEC_FRACBITS;
ptr++;
}
}
}
if (!prec->cblk[cblkno].data)
prec->cblk[cblkno].data = av_malloc(1 + 8192);
if (!prec->cblk[cblkno].passes)
prec->cblk[cblkno].passes = av_malloc_array(JPEG2000_MAX_PASSES, sizeof (*prec->cblk[cblkno].passes));
if (!prec->cblk[cblkno].data || !prec->cblk[cblkno].passes)
return AVERROR(ENOMEM);
encode_cblk(s, &t1, prec->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0,
bandpos, codsty->nreslevels - reslevelno - 1);
xx0 = xx1;
xx1 = FFMIN(xx1 + (1 << band->log2_cblk_width), band->coord[0][1] - band->coord[0][0] + x0);
}
yy0 = yy1;
yy1 = FFMIN(yy1 + (1 << band->log2_cblk_height), band->coord[1][1] - band->coord[1][0] + y0);
}
}
}
av_log(s->avctx, AV_LOG_DEBUG, "after tier1\n");
}
av_log(s->avctx, AV_LOG_DEBUG, "rate control\n");
if (s->compression_rate_enc)
makelayers(s, tile);
else
truncpasses(s, tile);
if ((ret = encode_packets(s, tile, tileno, s->nlayers)) < 0)
return ret;
av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n");
return 0;
}
static void cleanup(Jpeg2000EncoderContext *s)
{
int tileno, compno;
Jpeg2000CodingStyle *codsty = &s->codsty;
if (!s->tile)
return;
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
if (s->tile[tileno].comp) {
for (compno = 0; compno < s->ncomponents; compno++){
Jpeg2000Component *comp = s->tile[tileno].comp + compno;
ff_jpeg2000_cleanup(comp, codsty);
}
av_freep(&s->tile[tileno].comp);
}
av_freep(&s->tile[tileno].layer_rates);
}
av_freep(&s->tile);
}
static void reinit(Jpeg2000EncoderContext *s)
{
int tileno, compno;
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
Jpeg2000Tile *tile = s->tile + tileno;
for (compno = 0; compno < s->ncomponents; compno++)
ff_jpeg2000_reinit(tile->comp + compno, &s->codsty);
}
}
static void update_size(uint8_t *size, const uint8_t *end)
{
AV_WB32(size, end-size);
}
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
int tileno, ret;
Jpeg2000EncoderContext *s = avctx->priv_data;
uint8_t *chunkstart, *jp2cstart, *jp2hstart;
if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*9 + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
return ret;
// init:
s->buf = s->buf_start = pkt->data;
s->buf_end = pkt->data + pkt->size;
s->picture = pict;
s->lambda = s->picture->quality * LAMBDA_SCALE;
if (avctx->pix_fmt == AV_PIX_FMT_BGR48 || avctx->pix_fmt == AV_PIX_FMT_GRAY16)
copy_frame_16(s);
else
copy_frame_8(s);
reinit(s);
if (s->format == CODEC_JP2) {
av_assert0(s->buf == pkt->data);
bytestream_put_be32(&s->buf, 0x0000000C);
bytestream_put_be32(&s->buf, 0x6A502020);
bytestream_put_be32(&s->buf, 0x0D0A870A);
chunkstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "ftyp", 4);
bytestream_put_buffer(&s->buf, "jp2\040\040", 4);
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "jp2\040", 4);
update_size(chunkstart, s->buf);
jp2hstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "jp2h", 4);
chunkstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "ihdr", 4);
bytestream_put_be32(&s->buf, avctx->height);
bytestream_put_be32(&s->buf, avctx->width);
bytestream_put_be16(&s->buf, s->ncomponents);
bytestream_put_byte(&s->buf, s->cbps[0]);
bytestream_put_byte(&s->buf, 7);
bytestream_put_byte(&s->buf, 0);
bytestream_put_byte(&s->buf, 0);
update_size(chunkstart, s->buf);
chunkstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "colr", 4);
bytestream_put_byte(&s->buf, 1);
bytestream_put_byte(&s->buf, 0);
bytestream_put_byte(&s->buf, 0);
if (avctx->pix_fmt == AV_PIX_FMT_RGB24 || avctx->pix_fmt == AV_PIX_FMT_PAL8) {
bytestream_put_be32(&s->buf, 16);
} else if (s->ncomponents == 1) {
bytestream_put_be32(&s->buf, 17);
} else {
bytestream_put_be32(&s->buf, 18);
}
update_size(chunkstart, s->buf);
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
int i;
uint8_t *palette = pict->data[1];
chunkstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "pclr", 4);
bytestream_put_be16(&s->buf, AVPALETTE_COUNT);
bytestream_put_byte(&s->buf, 3); // colour channels
bytestream_put_be24(&s->buf, 0x070707); //colour depths
for (i = 0; i < AVPALETTE_COUNT; i++) {
bytestream_put_be24(&s->buf, HAVE_BIGENDIAN ? AV_RB24(palette + 1) : AV_RL24(palette));
palette += 4;
}
update_size(chunkstart, s->buf);
chunkstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "cmap", 4);
for (i = 0; i < 3; i++) {
bytestream_put_be16(&s->buf, 0); // component
bytestream_put_byte(&s->buf, 1); // palette mapping
bytestream_put_byte(&s->buf, i); // index
}
update_size(chunkstart, s->buf);
}
update_size(jp2hstart, s->buf);
jp2cstart = s->buf;
bytestream_put_be32(&s->buf, 0);
bytestream_put_buffer(&s->buf, "jp2c", 4);
}
if (s->buf_end - s->buf < 2)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_SOC);
if ((ret = put_siz(s)) < 0)
return ret;
if ((ret = put_cod(s)) < 0)
return ret;
if ((ret = put_qcd(s, 0)) < 0)
return ret;
if ((ret = put_com(s, 0)) < 0)
return ret;
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
uint8_t *psotptr;
if (!(psotptr = put_sot(s, tileno)))
return -1;
if (s->buf_end - s->buf < 2)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_SOD);
if ((ret = encode_tile(s, s->tile + tileno, tileno)) < 0)
return ret;
bytestream_put_be32(&psotptr, s->buf - psotptr + 6);
}
if (s->buf_end - s->buf < 2)
return -1;
bytestream_put_be16(&s->buf, JPEG2000_EOC);
if (s->format == CODEC_JP2)
update_size(jp2cstart, s->buf);
av_log(s->avctx, AV_LOG_DEBUG, "end\n");
pkt->size = s->buf - s->buf_start;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static int parse_layer_rates(Jpeg2000EncoderContext *s)
{
int i;
char *token;
char *saveptr = NULL;
int rate;
int nlayers = 0;
if (!s->lr_str) {
s->nlayers = 1;
s->layer_rates[0] = 0;
s->compression_rate_enc = 0;
return 0;
}
token = av_strtok(s->lr_str, ",", &saveptr);
if (rate = strtol(token, NULL, 10)) {
s->layer_rates[0] = rate <= 1 ? 0:rate;
nlayers++;
} else {
return AVERROR_INVALIDDATA;
}
while (1) {
token = av_strtok(NULL, ",", &saveptr);
if (!token)
break;
if (rate = strtol(token, NULL, 10)) {
if (nlayers >= 100) {
return AVERROR_INVALIDDATA;
}
s->layer_rates[nlayers] = rate <= 1 ? 0:rate;
nlayers++;
} else {
return AVERROR_INVALIDDATA;
}
}
for (i = 1; i < nlayers; i++) {
if (s->layer_rates[i] >= s->layer_rates[i-1]) {
return AVERROR_INVALIDDATA;
}
}
s->nlayers = nlayers;
s->compression_rate_enc = 1;
return 0;
}
static av_cold int j2kenc_init(AVCodecContext *avctx)
{
int i, ret;
Jpeg2000EncoderContext *s = avctx->priv_data;
Jpeg2000CodingStyle *codsty = &s->codsty;
Jpeg2000QuantStyle *qntsty = &s->qntsty;
s->avctx = avctx;
av_log(s->avctx, AV_LOG_DEBUG, "init\n");
if (parse_layer_rates(s)) {
av_log(s, AV_LOG_WARNING, "Layer rates invalid. Encoding with 1 layer based on quality metric.\n");
s->nlayers = 1;
s->layer_rates[0] = 0;
s->compression_rate_enc = 0;
}
if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && (s->pred != FF_DWT97_INT || s->format != CODEC_JP2)) {
av_log(s->avctx, AV_LOG_WARNING, "Forcing lossless jp2 for pal8\n");
s->pred = FF_DWT97_INT;
s->format = CODEC_JP2;
}
// defaults:
// TODO: implement setting non-standard precinct size
memset(codsty->log2_prec_widths , 15, sizeof(codsty->log2_prec_widths ));
memset(codsty->log2_prec_heights, 15, sizeof(codsty->log2_prec_heights));
codsty->nreslevels2decode=
codsty->nreslevels = 7;
codsty->nlayers = s->nlayers;
codsty->log2_cblk_width = 4;
codsty->log2_cblk_height = 4;
codsty->transform = s->pred ? FF_DWT53 : FF_DWT97_INT;
qntsty->nguardbits = 1;
if ((s->tile_width & (s->tile_width -1)) ||
(s->tile_height & (s->tile_height-1))) {
av_log(avctx, AV_LOG_WARNING, "Tile dimension not a power of 2\n");
}
if (codsty->transform == FF_DWT53)
qntsty->quantsty = JPEG2000_QSTY_NONE;
else
qntsty->quantsty = JPEG2000_QSTY_SE;
s->width = avctx->width;
s->height = avctx->height;
for (i = 0; i < 3; i++) {
if (avctx->pix_fmt == AV_PIX_FMT_GRAY16 || avctx->pix_fmt == AV_PIX_FMT_RGB48)
s->cbps[i] = 16;
else
s->cbps[i] = 8;
}
if (avctx->pix_fmt == AV_PIX_FMT_RGB24 || avctx->pix_fmt == AV_PIX_FMT_RGB48){
s->ncomponents = 3;
} else if (avctx->pix_fmt == AV_PIX_FMT_GRAY8 || avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY16){
s->ncomponents = 1;
} else{ // planar YUV
s->planar = 1;
s->ncomponents = 3;
ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
s->chroma_shift, s->chroma_shift + 1);
if (ret)
return ret;
}
ff_jpeg2000_init_tier1_luts();
ff_mqc_init_context_tables();
init_luts();
init_quantization(s);
if ((ret=init_tiles(s)) < 0)
return ret;
av_log(s->avctx, AV_LOG_DEBUG, "after init\n");
return 0;
}
static int j2kenc_destroy(AVCodecContext *avctx)
{
Jpeg2000EncoderContext *s = avctx->priv_data;
cleanup(s);
return 0;
}
// taken from the libopenjpeg wraper so it matches
#define OFFSET(x) offsetof(Jpeg2000EncoderContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "format", "Codec Format", OFFSET(format), AV_OPT_TYPE_INT, { .i64 = CODEC_JP2 }, CODEC_J2K, CODEC_JP2, VE, "format" },
{ "j2k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_J2K }, 0, 0, VE, "format" },
{ "jp2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_JP2 }, 0, 0, VE, "format" },
{ "tile_width", "Tile Width", OFFSET(tile_width), AV_OPT_TYPE_INT, { .i64 = 256 }, 1, 1<<30, VE, },
{ "tile_height", "Tile Height", OFFSET(tile_height), AV_OPT_TYPE_INT, { .i64 = 256 }, 1, 1<<30, VE, },
{ "pred", "DWT Type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, "pred" },
{ "dwt97int", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
{ "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
{ "sop", "SOP marker", OFFSET(sop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, },
{ "eph", "EPH marker", OFFSET(eph), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, },
{ "prog", "Progression Order", OFFSET(prog), AV_OPT_TYPE_INT, { .i64 = 0 }, JPEG2000_PGOD_LRCP, JPEG2000_PGOD_CPRL, VE, "prog" },
{ "lrcp", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_LRCP }, 0, 0, VE, "prog" },
{ "rlcp", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_RLCP }, 0, 0, VE, "prog" },
{ "rpcl", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_RPCL }, 0, 0, VE, "prog" },
{ "pcrl", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_PCRL }, 0, 0, VE, "prog" },
{ "cprl", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_CPRL }, 0, 0, VE, "prog" },
{ "layer_rates", "Layer Rates", OFFSET(lr_str), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
{ NULL }
};
static const AVClass j2k_class = {
.class_name = "jpeg 2000 encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
const AVCodec ff_jpeg2000_encoder = {
.name = "jpeg2000",
.long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_JPEG2000,
.priv_data_size = sizeof(Jpeg2000EncoderContext),
.init = j2kenc_init,
.encode2 = encode_frame,
.close = j2kenc_destroy,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_RGB24, AV_PIX_FMT_YUV444P, AV_PIX_FMT_GRAY8,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_PAL8,
AV_PIX_FMT_RGB48, AV_PIX_FMT_GRAY16,
AV_PIX_FMT_NONE
},
.priv_class = &j2k_class,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
};