mirror of
https://github.com/FFmpeg/FFmpeg.git
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1055 lines
37 KiB
C
1055 lines
37 KiB
C
/*
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* JPEG2000 image encoder
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* Copyright (c) 2007 Kamil Nowosad
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*
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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
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* 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
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*/
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/**
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* JPEG2000 image encoder
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* @file
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* @author Kamil Nowosad
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*/
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#include <float.h>
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#include "avcodec.h"
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#include "bytestream.h"
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#include "j2k.h"
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#include "libavutil/common.h"
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#define NMSEDEC_BITS 7
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#define NMSEDEC_FRACBITS (NMSEDEC_BITS-1)
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#define WMSEDEC_SHIFT 13 ///< must be >= 13
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#define LAMBDA_SCALE (100000000LL << (WMSEDEC_SHIFT - 13))
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static int lut_nmsedec_ref [1<<NMSEDEC_BITS],
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lut_nmsedec_ref0[1<<NMSEDEC_BITS],
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lut_nmsedec_sig [1<<NMSEDEC_BITS],
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lut_nmsedec_sig0[1<<NMSEDEC_BITS];
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static const int dwt_norms[2][4][10] = { // [dwt_type][band][rlevel] (multiplied by 10000)
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{{10000, 19650, 41770, 84030, 169000, 338400, 676900, 1353000, 2706000, 5409000},
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{20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
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{20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
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{20800, 38650, 83070, 171800, 347100, 695900, 1393000, 2786000, 5572000}},
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{{10000, 15000, 27500, 53750, 106800, 213400, 426700, 853300, 1707000, 3413000},
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{10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
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{10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
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{ 7186, 9218, 15860, 30430, 60190, 120100, 240000, 479700, 959300}}
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};
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typedef struct {
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J2kComponent *comp;
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} J2kTile;
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typedef struct {
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AVCodecContext *avctx;
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AVFrame picture;
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int width, height; ///< image width and height
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uint8_t cbps[4]; ///< bits per sample in particular components
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int chroma_shift[2];
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uint8_t planar;
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int ncomponents;
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int tile_width, tile_height; ///< tile size
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int numXtiles, numYtiles;
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uint8_t *buf_start;
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uint8_t *buf;
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uint8_t *buf_end;
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int bit_index;
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int64_t lambda;
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J2kCodingStyle codsty;
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J2kQuantStyle qntsty;
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J2kTile *tile;
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} J2kEncoderContext;
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/* debug */
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#if 0
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#undef ifprintf
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#undef printf
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static void nspaces(FILE *fd, int n)
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{
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while(n--) putc(' ', fd);
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}
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static void printv(int *tab, int l)
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{
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int i;
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for (i = 0; i < l; i++)
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printf("%.3d ", tab[i]);
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printf("\n");
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}
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static void printu(uint8_t *tab, int l)
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{
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int i;
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for (i = 0; i < l; i++)
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printf("%.3hd ", tab[i]);
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printf("\n");
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}
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static void printcomp(J2kComponent *comp)
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{
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int i;
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for (i = 0; i < comp->y1 - comp->y0; i++)
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printv(comp->data + i * (comp->x1 - comp->x0), comp->x1 - comp->x0);
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}
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static void dump(J2kEncoderContext *s, FILE *fd)
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{
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int tileno, compno, reslevelno, bandno, precno;
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fprintf(fd, "XSiz = %d, YSiz = %d, tile_width = %d, tile_height = %d\n"
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"numXtiles = %d, numYtiles = %d, ncomponents = %d\n"
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"tiles:\n",
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s->width, s->height, s->tile_width, s->tile_height,
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s->numXtiles, s->numYtiles, s->ncomponents);
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for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
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J2kTile *tile = s->tile + tileno;
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nspaces(fd, 2);
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fprintf(fd, "tile %d:\n", tileno);
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for(compno = 0; compno < s->ncomponents; compno++){
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J2kComponent *comp = tile->comp + compno;
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nspaces(fd, 4);
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fprintf(fd, "component %d:\n", compno);
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nspaces(fd, 4);
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fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d\n",
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comp->x0, comp->x1, comp->y0, comp->y1);
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for(reslevelno = 0; reslevelno < s->nreslevels; reslevelno++){
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J2kResLevel *reslevel = comp->reslevel + reslevelno;
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nspaces(fd, 6);
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fprintf(fd, "reslevel %d:\n", reslevelno);
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nspaces(fd, 6);
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fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d, nbands = %d\n",
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reslevel->x0, reslevel->x1, reslevel->y0,
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reslevel->y1, reslevel->nbands);
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for(bandno = 0; bandno < reslevel->nbands; bandno++){
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J2kBand *band = reslevel->band + bandno;
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nspaces(fd, 8);
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fprintf(fd, "band %d:\n", bandno);
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nspaces(fd, 8);
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fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d,"
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"codeblock_width = %d, codeblock_height = %d cblknx = %d cblkny = %d\n",
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band->x0, band->x1,
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band->y0, band->y1,
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band->codeblock_width, band->codeblock_height,
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band->cblknx, band->cblkny);
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for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
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J2kPrec *prec = band->prec + precno;
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nspaces(fd, 10);
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fprintf(fd, "prec %d:\n", precno);
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nspaces(fd, 10);
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fprintf(fd, "xi0 = %d, xi1 = %d, yi0 = %d, yi1 = %d\n",
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prec->xi0, prec->xi1, prec->yi0, prec->yi1);
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}
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}
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}
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}
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}
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}
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#endif
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/* bitstream routines */
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/** put n times val bit */
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static void put_bits(J2kEncoderContext *s, int val, int n) // TODO: optimize
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{
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while (n-- > 0){
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if (s->bit_index == 8)
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{
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s->bit_index = *s->buf == 0xff;
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*(++s->buf) = 0;
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}
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*s->buf |= val << (7 - s->bit_index++);
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}
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}
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/** put n least significant bits of a number num */
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static void put_num(J2kEncoderContext *s, int num, int n)
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{
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while(--n >= 0)
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put_bits(s, (num >> n) & 1, 1);
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}
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/** flush the bitstream */
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static void j2k_flush(J2kEncoderContext *s)
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{
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if (s->bit_index){
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s->bit_index = 0;
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s->buf++;
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}
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}
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/* tag tree routines */
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/** code the value stored in node */
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static void tag_tree_code(J2kEncoderContext *s, J2kTgtNode *node, int threshold)
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{
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J2kTgtNode *stack[30];
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int sp = 1, curval = 0;
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stack[0] = node;
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node = node->parent;
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while(node){
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if (node->vis){
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curval = node->val;
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break;
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}
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node->vis++;
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stack[sp++] = node;
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node = node->parent;
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}
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while(--sp >= 0){
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if (stack[sp]->val >= threshold){
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put_bits(s, 0, threshold - curval);
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break;
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}
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put_bits(s, 0, stack[sp]->val - curval);
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put_bits(s, 1, 1);
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curval = stack[sp]->val;
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}
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}
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/** update the value in node */
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static void tag_tree_update(J2kTgtNode *node)
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{
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int lev = 0;
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while (node->parent){
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if (node->parent->val <= node->val)
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break;
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node->parent->val = node->val;
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node = node->parent;
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lev++;
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}
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}
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static int put_siz(J2kEncoderContext *s)
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{
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int i;
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if (s->buf_end - s->buf < 40 + 3 * s->ncomponents)
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return -1;
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bytestream_put_be16(&s->buf, J2K_SIZ);
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bytestream_put_be16(&s->buf, 38 + 3 * s->ncomponents); // Lsiz
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bytestream_put_be16(&s->buf, 0); // Rsiz
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bytestream_put_be32(&s->buf, s->width); // width
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bytestream_put_be32(&s->buf, s->height); // height
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bytestream_put_be32(&s->buf, 0); // X0Siz
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bytestream_put_be32(&s->buf, 0); // Y0Siz
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bytestream_put_be32(&s->buf, s->tile_width); // XTSiz
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bytestream_put_be32(&s->buf, s->tile_height); // YTSiz
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bytestream_put_be32(&s->buf, 0); // XT0Siz
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bytestream_put_be32(&s->buf, 0); // YT0Siz
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bytestream_put_be16(&s->buf, s->ncomponents); // CSiz
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for (i = 0; i < s->ncomponents; i++){ // Ssiz_i XRsiz_i, YRsiz_i
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bytestream_put_byte(&s->buf, 7);
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bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[0]:1);
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bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[1]:1);
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}
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return 0;
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}
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static int put_cod(J2kEncoderContext *s)
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{
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J2kCodingStyle *codsty = &s->codsty;
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if (s->buf_end - s->buf < 14)
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return -1;
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bytestream_put_be16(&s->buf, J2K_COD);
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bytestream_put_be16(&s->buf, 12); // Lcod
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bytestream_put_byte(&s->buf, 0); // Scod
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// SGcod
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bytestream_put_byte(&s->buf, 0); // progression level
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bytestream_put_be16(&s->buf, 1); // num of layers
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if(s->avctx->pix_fmt == PIX_FMT_YUV444P){
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bytestream_put_byte(&s->buf, 2); // ICT
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}else{
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bytestream_put_byte(&s->buf, 0); // unspecified
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}
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// SPcod
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bytestream_put_byte(&s->buf, codsty->nreslevels - 1); // num of decomp. levels
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bytestream_put_byte(&s->buf, codsty->log2_cblk_width-2); // cblk width
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bytestream_put_byte(&s->buf, codsty->log2_cblk_height-2); // cblk height
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bytestream_put_byte(&s->buf, 0); // cblk style
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bytestream_put_byte(&s->buf, codsty->transform); // transformation
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return 0;
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}
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static int put_qcd(J2kEncoderContext *s, int compno)
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{
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int i, size;
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J2kCodingStyle *codsty = &s->codsty;
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J2kQuantStyle *qntsty = &s->qntsty;
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if (qntsty->quantsty == J2K_QSTY_NONE)
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size = 4 + 3 * (codsty->nreslevels-1);
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else // QSTY_SE
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size = 5 + 6 * (codsty->nreslevels-1);
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if (s->buf_end - s->buf < size + 2)
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return -1;
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bytestream_put_be16(&s->buf, J2K_QCD);
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bytestream_put_be16(&s->buf, size); // LQcd
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bytestream_put_byte(&s->buf, (qntsty->nguardbits << 5) | qntsty->quantsty); // Sqcd
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if (qntsty->quantsty == J2K_QSTY_NONE)
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for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
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bytestream_put_byte(&s->buf, qntsty->expn[i] << 3);
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else // QSTY_SE
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for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
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bytestream_put_be16(&s->buf, (qntsty->expn[i] << 11) | qntsty->mant[i]);
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return 0;
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}
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static uint8_t *put_sot(J2kEncoderContext *s, int tileno)
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{
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uint8_t *psotptr;
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if (s->buf_end - s->buf < 12)
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return NULL;
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bytestream_put_be16(&s->buf, J2K_SOT);
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bytestream_put_be16(&s->buf, 10); // Lsot
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bytestream_put_be16(&s->buf, tileno); // Isot
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psotptr = s->buf;
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bytestream_put_be32(&s->buf, 0); // Psot (filled in later)
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bytestream_put_byte(&s->buf, 0); // TPsot
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bytestream_put_byte(&s->buf, 1); // TNsot
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return psotptr;
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}
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/**
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* compute the sizes of tiles, resolution levels, bands, etc.
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* allocate memory for them
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* divide the input image into tile-components
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*/
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static int init_tiles(J2kEncoderContext *s)
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{
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int tileno, tilex, tiley, compno;
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J2kCodingStyle *codsty = &s->codsty;
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J2kQuantStyle *qntsty = &s->qntsty;
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s->numXtiles = ff_j2k_ceildiv(s->width, s->tile_width);
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s->numYtiles = ff_j2k_ceildiv(s->height, s->tile_height);
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s->tile = av_malloc(s->numXtiles * s->numYtiles * sizeof(J2kTile));
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if (!s->tile)
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return AVERROR(ENOMEM);
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for (tileno = 0, tiley = 0; tiley < s->numYtiles; tiley++)
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for (tilex = 0; tilex < s->numXtiles; tilex++, tileno++){
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J2kTile *tile = s->tile + tileno;
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tile->comp = av_malloc(s->ncomponents * sizeof(J2kComponent));
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if (!tile->comp)
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return AVERROR(ENOMEM);
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for (compno = 0; compno < s->ncomponents; compno++){
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J2kComponent *comp = tile->comp + compno;
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int ret, i, j;
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comp->coord[0][0] = tilex * s->tile_width;
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comp->coord[0][1] = FFMIN((tilex+1)*s->tile_width, s->width);
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comp->coord[1][0] = tiley * s->tile_height;
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comp->coord[1][1] = FFMIN((tiley+1)*s->tile_height, s->height);
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if (compno > 0)
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for (i = 0; i < 2; i++)
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for (j = 0; j < 2; j++)
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comp->coord[i][j] = ff_j2k_ceildivpow2(comp->coord[i][j], s->chroma_shift[i]);
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if (ret = ff_j2k_init_component(comp, codsty, qntsty, s->cbps[compno], compno?1<<s->chroma_shift[0]:1, compno?1<<s->chroma_shift[1]:1))
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return ret;
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}
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}
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return 0;
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}
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static void copy_frame(J2kEncoderContext *s)
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{
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int tileno, compno, i, y, x;
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uint8_t *line;
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for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
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J2kTile *tile = s->tile + tileno;
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if (s->planar){
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for (compno = 0; compno < s->ncomponents; compno++){
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J2kComponent *comp = tile->comp + compno;
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int *dst = comp->data;
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line = s->picture.data[compno]
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+ comp->coord[1][0] * s->picture.linesize[compno]
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+ comp->coord[0][0];
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for (y = comp->coord[1][0]; y < comp->coord[1][1]; y++){
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uint8_t *ptr = line;
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for (x = comp->coord[0][0]; x < comp->coord[0][1]; x++)
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*dst++ = *ptr++ - (1 << 7);
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line += s->picture.linesize[compno];
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}
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}
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} else{
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line = s->picture.data[0] + tile->comp[0].coord[1][0] * s->picture.linesize[0]
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+ tile->comp[0].coord[0][0] * s->ncomponents;
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i = 0;
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for (y = tile->comp[0].coord[1][0]; y < tile->comp[0].coord[1][1]; y++){
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uint8_t *ptr = line;
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for (x = tile->comp[0].coord[0][0]; x < tile->comp[0].coord[0][1]; x++, i++){
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for (compno = 0; compno < s->ncomponents; compno++){
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tile->comp[compno].data[i] = *ptr++ - (1 << 7);
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}
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}
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line += s->picture.linesize[0];
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}
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}
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}
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}
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static void init_quantization(J2kEncoderContext *s)
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{
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int compno, reslevelno, bandno;
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J2kQuantStyle *qntsty = &s->qntsty;
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J2kCodingStyle *codsty = &s->codsty;
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for (compno = 0; compno < s->ncomponents; compno++){
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int gbandno = 0;
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for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
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int nbands, lev = codsty->nreslevels - reslevelno - 1;
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nbands = reslevelno ? 3 : 1;
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for (bandno = 0; bandno < nbands; bandno++, gbandno++){
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int expn, mant;
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if (codsty->transform == FF_DWT97){
|
|
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()
|
|
{
|
|
int i, a,
|
|
mask = ~((1<<NMSEDEC_FRACBITS)-1);
|
|
|
|
for (i = 0; i < (1 << NMSEDEC_BITS); i++){
|
|
lut_nmsedec_sig[i] = FFMAX(6*i - (9<<NMSEDEC_FRACBITS-1) << 12-NMSEDEC_FRACBITS, 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((-2*i + (1<<NMSEDEC_FRACBITS) + a*i - (a*a<<NMSEDEC_FRACBITS-2))
|
|
<< 13-NMSEDEC_FRACBITS, 0);
|
|
lut_nmsedec_ref0[i] = FFMAX(((i*i + (1-4*i << NMSEDEC_FRACBITS-1) + (1<<2*NMSEDEC_FRACBITS)) & 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(J2kT1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
|
|
{
|
|
int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
|
|
int vert_causal_ctx_csty_loc_symbol;
|
|
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][x+1] & J2K_T1_SIG) && (t1->flags[y+1][x+1] & J2K_T1_SIG_NB)){
|
|
int ctxno = ff_j2k_getnbctxno(t1->flags[y+1][x+1], bandno, vert_causal_ctx_csty_loc_symbol),
|
|
bit = t1->data[y][x] & mask ? 1 : 0;
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
|
|
if (bit){
|
|
int xorbit;
|
|
int ctxno = ff_j2k_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
|
|
*nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
|
|
ff_j2k_set_significant(t1, x, y, t1->flags[y+1][x+1] >> 15);
|
|
}
|
|
t1->flags[y+1][x+1] |= J2K_T1_VIS;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void encode_refpass(J2kT1Context *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][x+1] & (J2K_T1_SIG | J2K_T1_VIS)) == J2K_T1_SIG){
|
|
int ctxno = ff_j2k_getrefctxno(t1->flags[y+1][x+1]);
|
|
*nmsedec += getnmsedec_ref(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
|
|
t1->flags[y+1][x+1] |= J2K_T1_REF;
|
|
}
|
|
}
|
|
|
|
static void encode_clnpass(J2kT1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
|
|
{
|
|
int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
|
|
int vert_causal_ctx_csty_loc_symbol;
|
|
for (y0 = 0; y0 < height; y0 += 4)
|
|
for (x = 0; x < width; x++){
|
|
if (y0 + 3 < height && !(
|
|
(t1->flags[y0+1][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG)) ||
|
|
(t1->flags[y0+2][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG)) ||
|
|
(t1->flags[y0+3][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG)) ||
|
|
(t1->flags[y0+4][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG))))
|
|
{
|
|
// aggregation mode
|
|
int rlen;
|
|
for (rlen = 0; rlen < 4; rlen++)
|
|
if (t1->data[y0+rlen][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][x+1] & (J2K_T1_SIG | J2K_T1_VIS))){
|
|
int ctxno = ff_j2k_getnbctxno(t1->flags[y+1][x+1], bandno, vert_causal_ctx_csty_loc_symbol);
|
|
if (y > y0 + rlen)
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
|
|
if (t1->data[y][x] & mask){ // newly significant
|
|
int xorbit;
|
|
int ctxno = ff_j2k_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
|
|
*nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
|
|
ff_j2k_set_significant(t1, x, y, t1->flags[y+1][x+1] >> 15);
|
|
}
|
|
}
|
|
t1->flags[y+1][x+1] &= ~J2K_T1_VIS;
|
|
}
|
|
} else{
|
|
for (y = y0; y < y0 + 4 && y < height; y++){
|
|
if (!(t1->flags[y+1][x+1] & (J2K_T1_SIG | J2K_T1_VIS))){
|
|
int ctxno = ff_j2k_getnbctxno(t1->flags[y+1][x+1], bandno, vert_causal_ctx_csty_loc_symbol);
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
|
|
if (t1->data[y][x] & mask){ // newly significant
|
|
int xorbit;
|
|
int ctxno = ff_j2k_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
|
|
*nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
|
|
ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
|
|
ff_j2k_set_significant(t1, x, y, t1->flags[y+1][x+1] >> 15);
|
|
}
|
|
}
|
|
t1->flags[y+1][x+1] &= ~J2K_T1_VIS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void encode_cblk(J2kEncoderContext *s, J2kT1Context *t1, J2kCblk *cblk, J2kTile *tile,
|
|
int width, int height, int bandpos, int lev)
|
|
{
|
|
int pass_t = 2, passno, x, y, max=0, nmsedec, bpno;
|
|
int64_t wmsedec = 0;
|
|
|
|
for (y = 0; y < height+2; y++)
|
|
memset(t1->flags[y], 0, (width+2)*sizeof(int));
|
|
|
|
for (y = 0; y < height; y++){
|
|
for (x = 0; x < width; x++){
|
|
if (t1->data[y][x] < 0){
|
|
t1->flags[y+1][x+1] |= J2K_T1_SGN;
|
|
t1->data[y][x] = -t1->data[y][x];
|
|
}
|
|
max = FFMAX(max, t1->data[y][x]);
|
|
}
|
|
}
|
|
|
|
if (max == 0){
|
|
cblk->nonzerobits = 0;
|
|
bpno = 0;
|
|
} else{
|
|
cblk->nonzerobits = av_log2(max) + 1 - NMSEDEC_FRACBITS;
|
|
bpno = cblk->nonzerobits - 1;
|
|
}
|
|
|
|
ff_mqc_initenc(&t1->mqc, cblk->data);
|
|
|
|
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 = 3 + ff_mqc_length(&t1->mqc);
|
|
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;
|
|
|
|
// TODO: optional flush on each pass
|
|
cblk->passes[passno-1].rate = ff_mqc_flush(&t1->mqc);
|
|
}
|
|
|
|
/* tier-2 routines: */
|
|
|
|
static void putnumpasses(J2kEncoderContext *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(J2kEncoderContext *s, J2kResLevel *rlevel, int precno,
|
|
uint8_t *expn, int numgbits)
|
|
{
|
|
int bandno, empty = 1;
|
|
|
|
// init bitstream
|
|
*s->buf = 0;
|
|
s->bit_index = 0;
|
|
|
|
// header
|
|
|
|
// is the packet empty?
|
|
for (bandno = 0; bandno < rlevel->nbands; bandno++){
|
|
if (rlevel->band[bandno].coord[0][0] < rlevel->band[bandno].coord[0][1]
|
|
&& rlevel->band[bandno].coord[1][0] < rlevel->band[bandno].coord[1][1]){
|
|
empty = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
put_bits(s, !empty, 1);
|
|
if (empty){
|
|
j2k_flush(s);
|
|
return 0;
|
|
}
|
|
|
|
for (bandno = 0; bandno < rlevel->nbands; bandno++){
|
|
J2kBand *band = rlevel->band + bandno;
|
|
J2kPrec *prec = band->prec + precno;
|
|
int yi, xi, pos;
|
|
int cblknw = prec->xi1 - prec->xi0;
|
|
|
|
if (band->coord[0][0] == band->coord[0][1]
|
|
|| band->coord[1][0] == band->coord[1][1])
|
|
continue;
|
|
|
|
for (pos=0, yi = prec->yi0; yi < prec->yi1; yi++){
|
|
for (xi = prec->xi0; xi < prec->xi1; xi++, pos++){
|
|
prec->cblkincl[pos].val = band->cblk[yi * cblknw + xi].ninclpasses == 0;
|
|
tag_tree_update(prec->cblkincl + pos);
|
|
prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - band->cblk[yi * cblknw + xi].nonzerobits;
|
|
tag_tree_update(prec->zerobits + pos);
|
|
}
|
|
}
|
|
|
|
for (pos=0, yi = prec->yi0; yi < prec->yi1; yi++){
|
|
for (xi = prec->xi0; xi < prec->xi1; xi++, pos++){
|
|
int pad = 0, llen, length;
|
|
J2kCblk *cblk = band->cblk + yi * cblknw + xi;
|
|
|
|
if (s->buf_end - s->buf < 20) // approximately
|
|
return -1;
|
|
|
|
// inclusion information
|
|
tag_tree_code(s, prec->cblkincl + pos, 1);
|
|
if (!cblk->ninclpasses)
|
|
continue;
|
|
// zerobits information
|
|
tag_tree_code(s, prec->zerobits + pos, 100);
|
|
// number of passes
|
|
putnumpasses(s, cblk->ninclpasses);
|
|
|
|
length = cblk->passes[cblk->ninclpasses-1].rate;
|
|
llen = av_log2(length) - av_log2(cblk->ninclpasses) - 2;
|
|
if (llen < 0){
|
|
pad = -llen;
|
|
llen = 0;
|
|
}
|
|
// length of code block
|
|
put_bits(s, 1, llen);
|
|
put_bits(s, 0, 1);
|
|
put_num(s, length, av_log2(length)+1+pad);
|
|
}
|
|
}
|
|
}
|
|
j2k_flush(s);
|
|
for (bandno = 0; bandno < rlevel->nbands; bandno++){
|
|
J2kBand *band = rlevel->band + bandno;
|
|
J2kPrec *prec = band->prec + precno;
|
|
int yi, cblknw = prec->xi1 - prec->xi0;
|
|
for (yi = prec->yi0; yi < prec->yi1; yi++){
|
|
int xi;
|
|
for (xi = prec->xi0; xi < prec->xi1; xi++){
|
|
J2kCblk *cblk = band->cblk + yi * cblknw + xi;
|
|
if (cblk->ninclpasses){
|
|
if (s->buf_end - s->buf < cblk->passes[cblk->ninclpasses-1].rate)
|
|
return -1;
|
|
bytestream_put_buffer(&s->buf, cblk->data, cblk->passes[cblk->ninclpasses-1].rate);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int encode_packets(J2kEncoderContext *s, J2kTile *tile, int tileno)
|
|
{
|
|
int compno, reslevelno, ret;
|
|
J2kCodingStyle *codsty = &s->codsty;
|
|
J2kQuantStyle *qntsty = &s->qntsty;
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "tier2\n");
|
|
// lay-rlevel-comp-pos progression
|
|
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
|
|
for (compno = 0; compno < s->ncomponents; compno++){
|
|
int precno;
|
|
J2kResLevel *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, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
|
|
qntsty->nguardbits))
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
av_log(s->avctx, AV_LOG_DEBUG, "after tier2\n");
|
|
return 0;
|
|
}
|
|
|
|
static int getcut(J2kCblk *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(J2kEncoderContext *s, J2kTile *tile)
|
|
{
|
|
int compno, reslevelno, bandno, cblkno, lev;
|
|
J2kCodingStyle *codsty = &s->codsty;
|
|
|
|
for (compno = 0; compno < s->ncomponents; compno++){
|
|
J2kComponent *comp = tile->comp + compno;
|
|
|
|
for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
|
|
J2kResLevel *reslevel = comp->reslevel + reslevelno;
|
|
|
|
for (bandno = 0; bandno < reslevel->nbands ; bandno++){
|
|
int bandpos = bandno + (reslevelno > 0);
|
|
J2kBand *band = reslevel->band + bandno;
|
|
|
|
for (cblkno = 0; cblkno < band->cblknx * band->cblkny; cblkno++){
|
|
J2kCblk *cblk = band->cblk + cblkno;
|
|
|
|
cblk->ninclpasses = getcut(cblk, s->lambda,
|
|
(int64_t)dwt_norms[codsty->transform][bandpos][lev] * (int64_t)band->stepsize >> 13);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int encode_tile(J2kEncoderContext *s, J2kTile *tile, int tileno)
|
|
{
|
|
int compno, reslevelno, bandno, ret;
|
|
J2kT1Context t1;
|
|
J2kCodingStyle *codsty = &s->codsty;
|
|
for (compno = 0; compno < s->ncomponents; compno++){
|
|
J2kComponent *comp = s->tile[tileno].comp + compno;
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG,"dwt\n");
|
|
if (ret = ff_j2k_dwt_encode(&comp->dwt, comp->data))
|
|
return ret;
|
|
av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n");
|
|
|
|
for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
|
|
J2kResLevel *reslevel = comp->reslevel + reslevelno;
|
|
|
|
for (bandno = 0; bandno < reslevel->nbands ; bandno++){
|
|
J2kBand *band = reslevel->band + bandno;
|
|
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_j2k_ceildiv(band->coord[1][0] + 1, band->codeblock_height) * band->codeblock_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 < band->cblkny; 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_j2k_ceildiv(band->coord[0][0] + 1, band->codeblock_width) * band->codeblock_width,
|
|
band->coord[0][1]) - band->coord[0][0] + xx0;
|
|
|
|
for (cblkx = 0; cblkx < band->cblknx; cblkx++, cblkno++){
|
|
int y, x;
|
|
if (codsty->transform == FF_DWT53){
|
|
for (y = yy0; y < yy1; y++){
|
|
int *ptr = t1.data[y-yy0];
|
|
for (x = xx0; x < xx1; x++){
|
|
*ptr++ = comp->data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] << NMSEDEC_FRACBITS;
|
|
}
|
|
}
|
|
} else{
|
|
for (y = yy0; y < yy1; y++){
|
|
int *ptr = t1.data[y-yy0];
|
|
for (x = xx0; x < xx1; x++){
|
|
*ptr = (comp->data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]);
|
|
*ptr = (int64_t)*ptr * (int64_t)(8192 * 8192 / band->stepsize) >> 13 - NMSEDEC_FRACBITS;
|
|
*ptr++;
|
|
}
|
|
}
|
|
}
|
|
encode_cblk(s, &t1, band->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0,
|
|
bandpos, codsty->nreslevels - reslevelno - 1);
|
|
xx0 = xx1;
|
|
xx1 = FFMIN(xx1 + band->codeblock_width, band->coord[0][1] - band->coord[0][0] + x0);
|
|
}
|
|
yy0 = yy1;
|
|
yy1 = FFMIN(yy1 + band->codeblock_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");
|
|
truncpasses(s, tile);
|
|
if (ret = encode_packets(s, tile, tileno))
|
|
return ret;
|
|
av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n");
|
|
return 0;
|
|
}
|
|
|
|
static void cleanup(J2kEncoderContext *s)
|
|
{
|
|
int tileno, compno;
|
|
J2kCodingStyle *codsty = &s->codsty;
|
|
|
|
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
|
|
for (compno = 0; compno < s->ncomponents; compno++){
|
|
J2kComponent *comp = s->tile[tileno].comp + compno;
|
|
ff_j2k_cleanup(comp, codsty);
|
|
}
|
|
av_freep(&s->tile[tileno].comp);
|
|
}
|
|
av_freep(&s->tile);
|
|
}
|
|
|
|
static void reinit(J2kEncoderContext *s)
|
|
{
|
|
int tileno, compno;
|
|
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
|
|
J2kTile *tile = s->tile + tileno;
|
|
for (compno = 0; compno < s->ncomponents; compno++)
|
|
ff_j2k_reinit(tile->comp + compno, &s->codsty);
|
|
}
|
|
}
|
|
|
|
static int encode_frame(AVCodecContext *avctx,
|
|
uint8_t *buf, int buf_size,
|
|
void *data)
|
|
{
|
|
int tileno, ret;
|
|
J2kEncoderContext *s = avctx->priv_data;
|
|
|
|
// init:
|
|
s->buf = s->buf_start = buf;
|
|
s->buf_end = buf + buf_size;
|
|
|
|
s->picture = *(AVFrame*)data;
|
|
avctx->coded_frame= &s->picture;
|
|
|
|
s->lambda = s->picture.quality * LAMBDA_SCALE;
|
|
|
|
copy_frame(s);
|
|
reinit(s);
|
|
|
|
if (s->buf_end - s->buf < 2)
|
|
return -1;
|
|
bytestream_put_be16(&s->buf, J2K_SOC);
|
|
if (ret = put_siz(s))
|
|
return ret;
|
|
if (ret = put_cod(s))
|
|
return ret;
|
|
if (ret = put_qcd(s, 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, J2K_SOD);
|
|
if (ret = encode_tile(s, s->tile + tileno, tileno))
|
|
return ret;
|
|
bytestream_put_be32(&psotptr, s->buf - psotptr + 6);
|
|
}
|
|
if (s->buf_end - s->buf < 2)
|
|
return -1;
|
|
bytestream_put_be16(&s->buf, J2K_EOC);
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "end\n");
|
|
return s->buf - s->buf_start;
|
|
}
|
|
|
|
static av_cold int j2kenc_init(AVCodecContext *avctx)
|
|
{
|
|
int i, ret;
|
|
J2kEncoderContext *s = avctx->priv_data;
|
|
J2kCodingStyle *codsty = &s->codsty;
|
|
J2kQuantStyle *qntsty = &s->qntsty;
|
|
|
|
s->avctx = avctx;
|
|
av_log(s->avctx, AV_LOG_DEBUG, "init\n");
|
|
|
|
// defaults:
|
|
// TODO: implement setting non-standard precinct size
|
|
codsty->log2_prec_width = 15;
|
|
codsty->log2_prec_height = 15;
|
|
codsty->nreslevels = 7;
|
|
codsty->log2_cblk_width = 4;
|
|
codsty->log2_cblk_height = 4;
|
|
codsty->transform = 1;
|
|
|
|
qntsty->nguardbits = 1;
|
|
|
|
s->tile_width = 256;
|
|
s->tile_height = 256;
|
|
|
|
if (codsty->transform == FF_DWT53)
|
|
qntsty->quantsty = J2K_QSTY_NONE;
|
|
else
|
|
qntsty->quantsty = J2K_QSTY_SE;
|
|
|
|
s->width = avctx->width;
|
|
s->height = avctx->height;
|
|
|
|
for (i = 0; i < 3; i++)
|
|
s->cbps[i] = 8;
|
|
|
|
if (avctx->pix_fmt == PIX_FMT_RGB24){
|
|
s->ncomponents = 3;
|
|
} else if (avctx->pix_fmt == PIX_FMT_GRAY8){
|
|
s->ncomponents = 1;
|
|
} else{ // planar YUV
|
|
s->planar = 1;
|
|
s->ncomponents = 3;
|
|
avcodec_get_chroma_sub_sample(avctx->pix_fmt,
|
|
s->chroma_shift, s->chroma_shift + 1);
|
|
}
|
|
|
|
ff_j2k_init_tier1_luts();
|
|
|
|
init_luts();
|
|
|
|
init_quantization(s);
|
|
if (ret=init_tiles(s))
|
|
return ret;
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "after init\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int j2kenc_destroy(AVCodecContext *avctx)
|
|
{
|
|
J2kEncoderContext *s = avctx->priv_data;
|
|
|
|
cleanup(s);
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_jpeg2000_encoder = {
|
|
.name = "j2k",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = CODEC_ID_JPEG2000,
|
|
.priv_data_size = sizeof(J2kEncoderContext),
|
|
.init = j2kenc_init,
|
|
.encode = encode_frame,
|
|
.close = j2kenc_destroy,
|
|
.capabilities= CODEC_CAP_EXPERIMENTAL,
|
|
.long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
|
|
.pix_fmts =
|
|
(const enum PixelFormat[]) {PIX_FMT_RGB24, PIX_FMT_YUV444P, PIX_FMT_GRAY8,
|
|
/* PIX_FMT_YUV420P,
|
|
PIX_FMT_YUV422P, PIX_FMT_YUV444P,
|
|
PIX_FMT_YUV410P, PIX_FMT_YUV411P,*/
|
|
-1}
|
|
};
|