yading@10: /*
yading@10:  * JPEG2000 image encoder
yading@10:  * Copyright (c) 2007 Kamil Nowosad
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * JPEG2000 image encoder
yading@10:  * @file
yading@10:  * @author Kamil Nowosad
yading@10:  */
yading@10: 
yading@10: #include <float.h>
yading@10: #include "avcodec.h"
yading@10: #include "internal.h"
yading@10: #include "bytestream.h"
yading@10: #include "j2k.h"
yading@10: #include "libavutil/common.h"
yading@10: 
yading@10: #define NMSEDEC_BITS 7
yading@10: #define NMSEDEC_FRACBITS (NMSEDEC_BITS-1)
yading@10: #define WMSEDEC_SHIFT 13 ///< must be >= 13
yading@10: #define LAMBDA_SCALE (100000000LL << (WMSEDEC_SHIFT - 13))
yading@10: 
yading@10: static int lut_nmsedec_ref [1<<NMSEDEC_BITS],
yading@10:            lut_nmsedec_ref0[1<<NMSEDEC_BITS],
yading@10:            lut_nmsedec_sig [1<<NMSEDEC_BITS],
yading@10:            lut_nmsedec_sig0[1<<NMSEDEC_BITS];
yading@10: 
yading@10: static const int dwt_norms[2][4][10] = { // [dwt_type][band][rlevel] (multiplied by 10000)
yading@10:     {{10000, 19650, 41770,  84030, 169000, 338400,  676900, 1353000, 2706000, 5409000},
yading@10:      {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
yading@10:      {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
yading@10:      {20800, 38650, 83070, 171800, 347100, 695900, 1393000, 2786000, 5572000}},
yading@10: 
yading@10:     {{10000, 15000, 27500, 53750, 106800, 213400, 426700, 853300, 1707000, 3413000},
yading@10:      {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
yading@10:      {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
yading@10:      { 7186,  9218, 15860, 30430,  60190, 120100, 240000, 479700,  959300}}
yading@10: };
yading@10: 
yading@10: typedef struct {
yading@10:    J2kComponent *comp;
yading@10: } J2kTile;
yading@10: 
yading@10: typedef struct {
yading@10:     AVCodecContext *avctx;
yading@10:     AVFrame picture;
yading@10: 
yading@10:     int width, height; ///< image width and height
yading@10:     uint8_t cbps[4]; ///< bits per sample in particular components
yading@10:     int chroma_shift[2];
yading@10:     uint8_t planar;
yading@10:     int ncomponents;
yading@10:     int tile_width, tile_height; ///< tile size
yading@10:     int numXtiles, numYtiles;
yading@10: 
yading@10:     uint8_t *buf_start;
yading@10:     uint8_t *buf;
yading@10:     uint8_t *buf_end;
yading@10:     int bit_index;
yading@10: 
yading@10:     int64_t lambda;
yading@10: 
yading@10:     J2kCodingStyle codsty;
yading@10:     J2kQuantStyle  qntsty;
yading@10: 
yading@10:     J2kTile *tile;
yading@10: } J2kEncoderContext;
yading@10: 
yading@10: 
yading@10: /* debug */
yading@10: #if 0
yading@10: #undef ifprintf
yading@10: #undef printf
yading@10: 
yading@10: static void nspaces(FILE *fd, int n)
yading@10: {
yading@10:     while(n--) putc(' ', fd);
yading@10: }
yading@10: 
yading@10: static void printcomp(J2kComponent *comp)
yading@10: {
yading@10:     int i;
yading@10:     for (i = 0; i < comp->y1 - comp->y0; i++)
yading@10:         ff_j2k_printv(comp->data + i * (comp->x1 - comp->x0), comp->x1 - comp->x0);
yading@10: }
yading@10: 
yading@10: static void dump(J2kEncoderContext *s, FILE *fd)
yading@10: {
yading@10:     int tileno, compno, reslevelno, bandno, precno;
yading@10:     fprintf(fd, "XSiz = %d, YSiz = %d, tile_width = %d, tile_height = %d\n"
yading@10:                 "numXtiles = %d, numYtiles = %d, ncomponents = %d\n"
yading@10:                 "tiles:\n",
yading@10:             s->width, s->height, s->tile_width, s->tile_height,
yading@10:             s->numXtiles, s->numYtiles, s->ncomponents);
yading@10:     for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
yading@10:         J2kTile *tile = s->tile + tileno;
yading@10:         nspaces(fd, 2);
yading@10:         fprintf(fd, "tile %d:\n", tileno);
yading@10:         for(compno = 0; compno < s->ncomponents; compno++){
yading@10:             J2kComponent *comp = tile->comp + compno;
yading@10:             nspaces(fd, 4);
yading@10:             fprintf(fd, "component %d:\n", compno);
yading@10:             nspaces(fd, 4);
yading@10:             fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d\n",
yading@10:                         comp->x0, comp->x1, comp->y0, comp->y1);
yading@10:             for(reslevelno = 0; reslevelno < s->nreslevels; reslevelno++){
yading@10:                 J2kResLevel *reslevel = comp->reslevel + reslevelno;
yading@10:                 nspaces(fd, 6);
yading@10:                 fprintf(fd, "reslevel %d:\n", reslevelno);
yading@10:                 nspaces(fd, 6);
yading@10:                 fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d, nbands = %d\n",
yading@10:                         reslevel->x0, reslevel->x1, reslevel->y0,
yading@10:                         reslevel->y1, reslevel->nbands);
yading@10:                 for(bandno = 0; bandno < reslevel->nbands; bandno++){
yading@10:                     J2kBand *band = reslevel->band + bandno;
yading@10:                     nspaces(fd, 8);
yading@10:                     fprintf(fd, "band %d:\n", bandno);
yading@10:                     nspaces(fd, 8);
yading@10:                     fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d,"
yading@10:                                 "codeblock_width = %d, codeblock_height = %d cblknx = %d cblkny = %d\n",
yading@10:                                 band->x0, band->x1,
yading@10:                                 band->y0, band->y1,
yading@10:                                 band->codeblock_width, band->codeblock_height,
yading@10:                                 band->cblknx, band->cblkny);
yading@10:                     for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
yading@10:                         J2kPrec *prec = band->prec + precno;
yading@10:                         nspaces(fd, 10);
yading@10:                         fprintf(fd, "prec %d:\n", precno);
yading@10:                         nspaces(fd, 10);
yading@10:                         fprintf(fd, "xi0 = %d, xi1 = %d, yi0 = %d, yi1 = %d\n",
yading@10:                                      prec->xi0, prec->xi1, prec->yi0, prec->yi1);
yading@10:                     }
yading@10:                 }
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: #endif
yading@10: 
yading@10: /* bitstream routines */
yading@10: 
yading@10: /** put n times val bit */
yading@10: static void put_bits(J2kEncoderContext *s, int val, int n) // TODO: optimize
yading@10: {
yading@10:     while (n-- > 0){
yading@10:         if (s->bit_index == 8)
yading@10:         {
yading@10:             s->bit_index = *s->buf == 0xff;
yading@10:             *(++s->buf) = 0;
yading@10:         }
yading@10:         *s->buf |= val << (7 - s->bit_index++);
yading@10:     }
yading@10: }
yading@10: 
yading@10: /** put n least significant bits of a number num */
yading@10: static void put_num(J2kEncoderContext *s, int num, int n)
yading@10: {
yading@10:     while(--n >= 0)
yading@10:         put_bits(s, (num >> n) & 1, 1);
yading@10: }
yading@10: 
yading@10: /** flush the bitstream */
yading@10: static void j2k_flush(J2kEncoderContext *s)
yading@10: {
yading@10:     if (s->bit_index){
yading@10:         s->bit_index = 0;
yading@10:         s->buf++;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* tag tree routines */
yading@10: 
yading@10: /** code the value stored in node */
yading@10: static void tag_tree_code(J2kEncoderContext *s, J2kTgtNode *node, int threshold)
yading@10: {
yading@10:     J2kTgtNode *stack[30];
yading@10:     int sp = 1, curval = 0;
yading@10:     stack[0] = node;
yading@10: 
yading@10:     node = node->parent;
yading@10:     while(node){
yading@10:         if (node->vis){
yading@10:             curval = node->val;
yading@10:             break;
yading@10:         }
yading@10:         node->vis++;
yading@10:         stack[sp++] = node;
yading@10:         node = node->parent;
yading@10:     }
yading@10:     while(--sp >= 0){
yading@10:         if (stack[sp]->val >= threshold){
yading@10:             put_bits(s, 0, threshold - curval);
yading@10:             break;
yading@10:         }
yading@10:         put_bits(s, 0, stack[sp]->val - curval);
yading@10:         put_bits(s, 1, 1);
yading@10:         curval = stack[sp]->val;
yading@10:     }
yading@10: }
yading@10: 
yading@10: /** update the value in node */
yading@10: static void tag_tree_update(J2kTgtNode *node)
yading@10: {
yading@10:     int lev = 0;
yading@10:     while (node->parent){
yading@10:         if (node->parent->val <= node->val)
yading@10:             break;
yading@10:         node->parent->val = node->val;
yading@10:         node = node->parent;
yading@10:         lev++;
yading@10:     }
yading@10: }
yading@10: 
yading@10: static int put_siz(J2kEncoderContext *s)
yading@10: {
yading@10:     int i;
yading@10: 
yading@10:     if (s->buf_end - s->buf < 40 + 3 * s->ncomponents)
yading@10:         return -1;
yading@10: 
yading@10:     bytestream_put_be16(&s->buf, J2K_SIZ);
yading@10:     bytestream_put_be16(&s->buf, 38 + 3 * s->ncomponents); // Lsiz
yading@10:     bytestream_put_be16(&s->buf, 0); // Rsiz
yading@10:     bytestream_put_be32(&s->buf, s->width); // width
yading@10:     bytestream_put_be32(&s->buf, s->height); // height
yading@10:     bytestream_put_be32(&s->buf, 0); // X0Siz
yading@10:     bytestream_put_be32(&s->buf, 0); // Y0Siz
yading@10: 
yading@10:     bytestream_put_be32(&s->buf, s->tile_width); // XTSiz
yading@10:     bytestream_put_be32(&s->buf, s->tile_height); // YTSiz
yading@10:     bytestream_put_be32(&s->buf, 0); // XT0Siz
yading@10:     bytestream_put_be32(&s->buf, 0); // YT0Siz
yading@10:     bytestream_put_be16(&s->buf, s->ncomponents); // CSiz
yading@10: 
yading@10:     for (i = 0; i < s->ncomponents; i++){ // Ssiz_i XRsiz_i, YRsiz_i
yading@10:         bytestream_put_byte(&s->buf, 7);
yading@10:         bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[0]:1);
yading@10:         bytestream_put_byte(&s->buf, i?1<<s->chroma_shift[1]:1);
yading@10:     }
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int put_cod(J2kEncoderContext *s)
yading@10: {
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10: 
yading@10:     if (s->buf_end - s->buf < 14)
yading@10:         return -1;
yading@10: 
yading@10:     bytestream_put_be16(&s->buf, J2K_COD);
yading@10:     bytestream_put_be16(&s->buf, 12); // Lcod
yading@10:     bytestream_put_byte(&s->buf, 0);  // Scod
yading@10:     // SGcod
yading@10:     bytestream_put_byte(&s->buf, 0); // progression level
yading@10:     bytestream_put_be16(&s->buf, 1); // num of layers
yading@10:     if(s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){
yading@10:         bytestream_put_byte(&s->buf, 2); // ICT
yading@10:     }else{
yading@10:         bytestream_put_byte(&s->buf, 0); // unspecified
yading@10:     }
yading@10:     // SPcod
yading@10:     bytestream_put_byte(&s->buf, codsty->nreslevels - 1); // num of decomp. levels
yading@10:     bytestream_put_byte(&s->buf, codsty->log2_cblk_width-2); // cblk width
yading@10:     bytestream_put_byte(&s->buf, codsty->log2_cblk_height-2); // cblk height
yading@10:     bytestream_put_byte(&s->buf, 0); // cblk style
yading@10:     bytestream_put_byte(&s->buf, codsty->transform); // transformation
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int put_qcd(J2kEncoderContext *s, int compno)
yading@10: {
yading@10:     int i, size;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10:     J2kQuantStyle  *qntsty = &s->qntsty;
yading@10: 
yading@10:     if (qntsty->quantsty == J2K_QSTY_NONE)
yading@10:         size = 4 + 3 * (codsty->nreslevels-1);
yading@10:     else // QSTY_SE
yading@10:         size = 5 + 6 * (codsty->nreslevels-1);
yading@10: 
yading@10:     if (s->buf_end - s->buf < size + 2)
yading@10:         return -1;
yading@10: 
yading@10:     bytestream_put_be16(&s->buf, J2K_QCD);
yading@10:     bytestream_put_be16(&s->buf, size);  // LQcd
yading@10:     bytestream_put_byte(&s->buf, (qntsty->nguardbits << 5) | qntsty->quantsty);  // Sqcd
yading@10:     if (qntsty->quantsty == J2K_QSTY_NONE)
yading@10:         for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
yading@10:             bytestream_put_byte(&s->buf, qntsty->expn[i] << 3);
yading@10:     else // QSTY_SE
yading@10:         for (i = 0; i < codsty->nreslevels * 3 - 2; i++)
yading@10:             bytestream_put_be16(&s->buf, (qntsty->expn[i] << 11) | qntsty->mant[i]);
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static uint8_t *put_sot(J2kEncoderContext *s, int tileno)
yading@10: {
yading@10:     uint8_t *psotptr;
yading@10: 
yading@10:     if (s->buf_end - s->buf < 12)
yading@10:         return NULL;
yading@10: 
yading@10:     bytestream_put_be16(&s->buf, J2K_SOT);
yading@10:     bytestream_put_be16(&s->buf, 10); // Lsot
yading@10:     bytestream_put_be16(&s->buf, tileno); // Isot
yading@10: 
yading@10:     psotptr = s->buf;
yading@10:     bytestream_put_be32(&s->buf, 0); // Psot (filled in later)
yading@10: 
yading@10:     bytestream_put_byte(&s->buf, 0); // TPsot
yading@10:     bytestream_put_byte(&s->buf, 1); // TNsot
yading@10:     return psotptr;
yading@10: }
yading@10: 
yading@10: /**
yading@10:  * compute the sizes of tiles, resolution levels, bands, etc.
yading@10:  * allocate memory for them
yading@10:  * divide the input image into tile-components
yading@10:  */
yading@10: static int init_tiles(J2kEncoderContext *s)
yading@10: {
yading@10:     int tileno, tilex, tiley, compno;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10:     J2kQuantStyle  *qntsty = &s->qntsty;
yading@10: 
yading@10:     s->numXtiles = ff_j2k_ceildiv(s->width, s->tile_width);
yading@10:     s->numYtiles = ff_j2k_ceildiv(s->height, s->tile_height);
yading@10: 
yading@10:     s->tile = av_malloc(s->numXtiles * s->numYtiles * sizeof(J2kTile));
yading@10:     if (!s->tile)
yading@10:         return AVERROR(ENOMEM);
yading@10:     for (tileno = 0, tiley = 0; tiley < s->numYtiles; tiley++)
yading@10:         for (tilex = 0; tilex < s->numXtiles; tilex++, tileno++){
yading@10:             J2kTile *tile = s->tile + tileno;
yading@10: 
yading@10:             tile->comp = av_malloc(s->ncomponents * sizeof(J2kComponent));
yading@10:             if (!tile->comp)
yading@10:                 return AVERROR(ENOMEM);
yading@10:             for (compno = 0; compno < s->ncomponents; compno++){
yading@10:                 J2kComponent *comp = tile->comp + compno;
yading@10:                 int ret, i, j;
yading@10: 
yading@10:                 comp->coord[0][0] = tilex * s->tile_width;
yading@10:                 comp->coord[0][1] = FFMIN((tilex+1)*s->tile_width, s->width);
yading@10:                 comp->coord[1][0] = tiley * s->tile_height;
yading@10:                 comp->coord[1][1] = FFMIN((tiley+1)*s->tile_height, s->height);
yading@10:                 if (compno > 0)
yading@10:                     for (i = 0; i < 2; i++)
yading@10:                         for (j = 0; j < 2; j++)
yading@10:                             comp->coord[i][j] = ff_j2k_ceildivpow2(comp->coord[i][j], s->chroma_shift[i]);
yading@10: 
yading@10:                 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))
yading@10:                     return ret;
yading@10:             }
yading@10:         }
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static void copy_frame(J2kEncoderContext *s)
yading@10: {
yading@10:     int tileno, compno, i, y, x;
yading@10:     uint8_t *line;
yading@10:     for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
yading@10:         J2kTile *tile = s->tile + tileno;
yading@10:         if (s->planar){
yading@10:             for (compno = 0; compno < s->ncomponents; compno++){
yading@10:                 J2kComponent *comp = tile->comp + compno;
yading@10:                 int *dst = comp->data;
yading@10:                 line = s->picture.data[compno]
yading@10:                        + comp->coord[1][0] * s->picture.linesize[compno]
yading@10:                        + comp->coord[0][0];
yading@10:                 for (y = comp->coord[1][0]; y < comp->coord[1][1]; y++){
yading@10:                     uint8_t *ptr = line;
yading@10:                     for (x = comp->coord[0][0]; x < comp->coord[0][1]; x++)
yading@10:                         *dst++ = *ptr++ - (1 << 7);
yading@10:                     line += s->picture.linesize[compno];
yading@10:                 }
yading@10:             }
yading@10:         } else{
yading@10:             line = s->picture.data[0] + tile->comp[0].coord[1][0] * s->picture.linesize[0]
yading@10:                    + tile->comp[0].coord[0][0] * s->ncomponents;
yading@10: 
yading@10:             i = 0;
yading@10:             for (y = tile->comp[0].coord[1][0]; y < tile->comp[0].coord[1][1]; y++){
yading@10:                 uint8_t *ptr = line;
yading@10:                 for (x = tile->comp[0].coord[0][0]; x < tile->comp[0].coord[0][1]; x++, i++){
yading@10:                     for (compno = 0; compno < s->ncomponents; compno++){
yading@10:                         tile->comp[compno].data[i] = *ptr++  - (1 << 7);
yading@10:                     }
yading@10:                 }
yading@10:                 line += s->picture.linesize[0];
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static void init_quantization(J2kEncoderContext *s)
yading@10: {
yading@10:     int compno, reslevelno, bandno;
yading@10:     J2kQuantStyle  *qntsty = &s->qntsty;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10: 
yading@10:     for (compno = 0; compno < s->ncomponents; compno++){
yading@10:         int gbandno = 0;
yading@10:         for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
yading@10:             int nbands, lev = codsty->nreslevels - reslevelno - 1;
yading@10:             nbands = reslevelno ? 3 : 1;
yading@10:             for (bandno = 0; bandno < nbands; bandno++, gbandno++){
yading@10:                 int expn, mant;
yading@10: 
yading@10:                 if (codsty->transform == FF_DWT97){
yading@10:                     int bandpos = bandno + (reslevelno>0),
yading@10:                         ss = 81920000 / dwt_norms[0][bandpos][lev],
yading@10:                         log = av_log2(ss);
yading@10:                     mant = (11 - log < 0 ? ss >> log - 11 : ss << 11 - log) & 0x7ff;
yading@10:                     expn = s->cbps[compno] - log + 13;
yading@10:                 } else
yading@10:                     expn = ((bandno&2)>>1) + (reslevelno>0) + s->cbps[compno];
yading@10: 
yading@10:                 qntsty->expn[gbandno] = expn;
yading@10:                 qntsty->mant[gbandno] = mant;
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static void init_luts(void)
yading@10: {
yading@10:     int i, a,
yading@10:         mask = ~((1<<NMSEDEC_FRACBITS)-1);
yading@10: 
yading@10:     for (i = 0; i < (1 << NMSEDEC_BITS); i++){
yading@10:         lut_nmsedec_sig[i]  = FFMAX(6*i - (9<<NMSEDEC_FRACBITS-1) << 12-NMSEDEC_FRACBITS, 0);
yading@10:         lut_nmsedec_sig0[i] = FFMAX((i*i + (1<<NMSEDEC_FRACBITS-1) & mask) << 1, 0);
yading@10: 
yading@10:         a = (i >> (NMSEDEC_BITS-2)&2) + 1;
yading@10:         lut_nmsedec_ref[i]  = FFMAX((-2*i + (1<<NMSEDEC_FRACBITS) + a*i - (a*a<<NMSEDEC_FRACBITS-2))
yading@10:                                     << 13-NMSEDEC_FRACBITS, 0);
yading@10:         lut_nmsedec_ref0[i] = FFMAX(((i*i + (1-4*i << NMSEDEC_FRACBITS-1) + (1<<2*NMSEDEC_FRACBITS)) & mask)
yading@10:                                     << 1, 0);
yading@10:     }
yading@10: }
yading@10: 
yading@10: /* tier-1 routines */
yading@10: static int getnmsedec_sig(int x, int bpno)
yading@10: {
yading@10:     if (bpno > NMSEDEC_FRACBITS)
yading@10:         return lut_nmsedec_sig[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
yading@10:     return lut_nmsedec_sig0[x & ((1 << NMSEDEC_BITS) - 1)];
yading@10: }
yading@10: 
yading@10: static int getnmsedec_ref(int x, int bpno)
yading@10: {
yading@10:     if (bpno > NMSEDEC_FRACBITS)
yading@10:         return lut_nmsedec_ref[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)];
yading@10:     return lut_nmsedec_ref0[x & ((1 << NMSEDEC_BITS) - 1)];
yading@10: }
yading@10: 
yading@10: static void encode_sigpass(J2kT1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
yading@10: {
yading@10:     int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
yading@10:     int vert_causal_ctx_csty_loc_symbol;
yading@10:     for (y0 = 0; y0 < height; y0 += 4)
yading@10:         for (x = 0; x < width; x++)
yading@10:             for (y = y0; y < height && y < y0+4; y++){
yading@10:                 if (!(t1->flags[y+1][x+1] & J2K_T1_SIG) && (t1->flags[y+1][x+1] & J2K_T1_SIG_NB)){
yading@10:                     int ctxno = ff_j2k_getnbctxno(t1->flags[y+1][x+1], bandno, vert_causal_ctx_csty_loc_symbol),
yading@10:                         bit = t1->data[y][x] & mask ? 1 : 0;
yading@10:                     ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit);
yading@10:                     if (bit){
yading@10:                         int xorbit;
yading@10:                         int ctxno = ff_j2k_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
yading@10:                         ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
yading@10:                         *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
yading@10:                         ff_j2k_set_significant(t1, x, y, t1->flags[y+1][x+1] >> 15);
yading@10:                     }
yading@10:                     t1->flags[y+1][x+1] |= J2K_T1_VIS;
yading@10:                 }
yading@10:             }
yading@10: }
yading@10: 
yading@10: static void encode_refpass(J2kT1Context *t1, int width, int height, int *nmsedec, int bpno)
yading@10: {
yading@10:     int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
yading@10:     for (y0 = 0; y0 < height; y0 += 4)
yading@10:         for (x = 0; x < width; x++)
yading@10:             for (y = y0; y < height && y < y0+4; y++)
yading@10:                 if ((t1->flags[y+1][x+1] & (J2K_T1_SIG | J2K_T1_VIS)) == J2K_T1_SIG){
yading@10:                     int ctxno = ff_j2k_getrefctxno(t1->flags[y+1][x+1]);
yading@10:                     *nmsedec += getnmsedec_ref(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
yading@10:                     ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
yading@10:                     t1->flags[y+1][x+1] |= J2K_T1_REF;
yading@10:                 }
yading@10: }
yading@10: 
yading@10: static void encode_clnpass(J2kT1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
yading@10: {
yading@10:     int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS);
yading@10:     int vert_causal_ctx_csty_loc_symbol;
yading@10:     for (y0 = 0; y0 < height; y0 += 4)
yading@10:         for (x = 0; x < width; x++){
yading@10:             if (y0 + 3 < height && !(
yading@10:             (t1->flags[y0+1][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG)) ||
yading@10:             (t1->flags[y0+2][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG)) ||
yading@10:             (t1->flags[y0+3][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG)) ||
yading@10:             (t1->flags[y0+4][x+1] & (J2K_T1_SIG_NB | J2K_T1_VIS | J2K_T1_SIG))))
yading@10:             {
yading@10:                 // aggregation mode
yading@10:                 int rlen;
yading@10:                 for (rlen = 0; rlen < 4; rlen++)
yading@10:                     if (t1->data[y0+rlen][x] & mask)
yading@10:                         break;
yading@10:                 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL, rlen != 4);
yading@10:                 if (rlen == 4)
yading@10:                     continue;
yading@10:                 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen >> 1);
yading@10:                 ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1);
yading@10:                 for (y = y0 + rlen; y < y0 + 4; y++){
yading@10:                     if (!(t1->flags[y+1][x+1] & (J2K_T1_SIG | J2K_T1_VIS))){
yading@10:                         int ctxno = ff_j2k_getnbctxno(t1->flags[y+1][x+1], bandno, vert_causal_ctx_csty_loc_symbol);
yading@10:                         if (y > y0 + rlen)
yading@10:                             ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
yading@10:                         if (t1->data[y][x] & mask){ // newly significant
yading@10:                             int xorbit;
yading@10:                             int ctxno = ff_j2k_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
yading@10:                             *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
yading@10:                             ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
yading@10:                             ff_j2k_set_significant(t1, x, y, t1->flags[y+1][x+1] >> 15);
yading@10:                         }
yading@10:                     }
yading@10:                     t1->flags[y+1][x+1] &= ~J2K_T1_VIS;
yading@10:                 }
yading@10:             } else{
yading@10:                 for (y = y0; y < y0 + 4 && y < height; y++){
yading@10:                     if (!(t1->flags[y+1][x+1] & (J2K_T1_SIG | J2K_T1_VIS))){
yading@10:                         int ctxno = ff_j2k_getnbctxno(t1->flags[y+1][x+1], bandno, vert_causal_ctx_csty_loc_symbol);
yading@10:                         ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0);
yading@10:                         if (t1->data[y][x] & mask){ // newly significant
yading@10:                             int xorbit;
yading@10:                             int ctxno = ff_j2k_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
yading@10:                             *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS);
yading@10:                             ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit);
yading@10:                             ff_j2k_set_significant(t1, x, y, t1->flags[y+1][x+1] >> 15);
yading@10:                         }
yading@10:                     }
yading@10:                     t1->flags[y+1][x+1] &= ~J2K_T1_VIS;
yading@10:                 }
yading@10:             }
yading@10:         }
yading@10: }
yading@10: 
yading@10: static void encode_cblk(J2kEncoderContext *s, J2kT1Context *t1, J2kCblk *cblk, J2kTile *tile,
yading@10:                         int width, int height, int bandpos, int lev)
yading@10: {
yading@10:     int pass_t = 2, passno, x, y, max=0, nmsedec, bpno;
yading@10:     int64_t wmsedec = 0;
yading@10: 
yading@10:     for (y = 0; y < height+2; y++)
yading@10:         memset(t1->flags[y], 0, (width+2)*sizeof(int));
yading@10: 
yading@10:     for (y = 0; y < height; y++){
yading@10:         for (x = 0; x < width; x++){
yading@10:             if (t1->data[y][x] < 0){
yading@10:                 t1->flags[y+1][x+1] |= J2K_T1_SGN;
yading@10:                 t1->data[y][x] = -t1->data[y][x];
yading@10:             }
yading@10:             max = FFMAX(max, t1->data[y][x]);
yading@10:         }
yading@10:     }
yading@10: 
yading@10:     if (max == 0){
yading@10:         cblk->nonzerobits = 0;
yading@10:         bpno = 0;
yading@10:     } else{
yading@10:         cblk->nonzerobits = av_log2(max) + 1 - NMSEDEC_FRACBITS;
yading@10:         bpno = cblk->nonzerobits - 1;
yading@10:     }
yading@10: 
yading@10:     ff_mqc_initenc(&t1->mqc, cblk->data);
yading@10: 
yading@10:     for (passno = 0; bpno >= 0; passno++){
yading@10:         nmsedec=0;
yading@10: 
yading@10:         switch(pass_t){
yading@10:             case 0: encode_sigpass(t1, width, height, bandpos, &nmsedec, bpno);
yading@10:                     break;
yading@10:             case 1: encode_refpass(t1, width, height, &nmsedec, bpno);
yading@10:                     break;
yading@10:             case 2: encode_clnpass(t1, width, height, bandpos, &nmsedec, bpno);
yading@10:                     break;
yading@10:         }
yading@10: 
yading@10:         cblk->passes[passno].rate = 3 + ff_mqc_length(&t1->mqc);
yading@10:         wmsedec += (int64_t)nmsedec << (2*bpno);
yading@10:         cblk->passes[passno].disto = wmsedec;
yading@10: 
yading@10:         if (++pass_t == 3){
yading@10:             pass_t = 0;
yading@10:             bpno--;
yading@10:         }
yading@10:     }
yading@10:     cblk->npasses = passno;
yading@10:     cblk->ninclpasses = passno;
yading@10: 
yading@10:     // TODO: optional flush on each pass
yading@10:     cblk->passes[passno-1].rate = ff_mqc_flush(&t1->mqc);
yading@10: }
yading@10: 
yading@10: /* tier-2 routines: */
yading@10: 
yading@10: static void putnumpasses(J2kEncoderContext *s, int n)
yading@10: {
yading@10:     if (n == 1)
yading@10:         put_num(s, 0, 1);
yading@10:     else if (n == 2)
yading@10:         put_num(s, 2, 2);
yading@10:     else if (n <= 5)
yading@10:         put_num(s, 0xc | (n-3), 4);
yading@10:     else if (n <= 36)
yading@10:         put_num(s, 0x1e0 | (n-6), 9);
yading@10:     else
yading@10:         put_num(s, 0xff80 | (n-37), 16);
yading@10: }
yading@10: 
yading@10: 
yading@10: static int encode_packet(J2kEncoderContext *s, J2kResLevel *rlevel, int precno,
yading@10:                           uint8_t *expn, int numgbits)
yading@10: {
yading@10:     int bandno, empty = 1;
yading@10: 
yading@10:     // init bitstream
yading@10:     *s->buf = 0;
yading@10:     s->bit_index = 0;
yading@10: 
yading@10:     // header
yading@10: 
yading@10:     // is the packet empty?
yading@10:     for (bandno = 0; bandno < rlevel->nbands; bandno++){
yading@10:         if (rlevel->band[bandno].coord[0][0] < rlevel->band[bandno].coord[0][1]
yading@10:         &&  rlevel->band[bandno].coord[1][0] < rlevel->band[bandno].coord[1][1]){
yading@10:             empty = 0;
yading@10:             break;
yading@10:         }
yading@10:     }
yading@10: 
yading@10:     put_bits(s, !empty, 1);
yading@10:     if (empty){
yading@10:         j2k_flush(s);
yading@10:         return 0;
yading@10:     }
yading@10: 
yading@10:     for (bandno = 0; bandno < rlevel->nbands; bandno++){
yading@10:         J2kBand *band = rlevel->band + bandno;
yading@10:         J2kPrec *prec = band->prec + precno;
yading@10:         int yi, xi, pos;
yading@10:         int cblknw = prec->xi1 - prec->xi0;
yading@10: 
yading@10:         if (band->coord[0][0] == band->coord[0][1]
yading@10:         ||  band->coord[1][0] == band->coord[1][1])
yading@10:             continue;
yading@10: 
yading@10:         for (pos=0, yi = prec->yi0; yi < prec->yi1; yi++){
yading@10:             for (xi = prec->xi0; xi < prec->xi1; xi++, pos++){
yading@10:                 prec->cblkincl[pos].val = band->cblk[yi * cblknw + xi].ninclpasses == 0;
yading@10:                 tag_tree_update(prec->cblkincl + pos);
yading@10:                 prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - band->cblk[yi * cblknw + xi].nonzerobits;
yading@10:                 tag_tree_update(prec->zerobits + pos);
yading@10:             }
yading@10:         }
yading@10: 
yading@10:         for (pos=0, yi = prec->yi0; yi < prec->yi1; yi++){
yading@10:             for (xi = prec->xi0; xi < prec->xi1; xi++, pos++){
yading@10:                 int pad = 0, llen, length;
yading@10:                 J2kCblk *cblk = band->cblk + yi * cblknw + xi;
yading@10: 
yading@10:                 if (s->buf_end - s->buf < 20) // approximately
yading@10:                     return -1;
yading@10: 
yading@10:                 // inclusion information
yading@10:                 tag_tree_code(s, prec->cblkincl + pos, 1);
yading@10:                 if (!cblk->ninclpasses)
yading@10:                     continue;
yading@10:                 // zerobits information
yading@10:                 tag_tree_code(s, prec->zerobits + pos, 100);
yading@10:                 // number of passes
yading@10:                 putnumpasses(s, cblk->ninclpasses);
yading@10: 
yading@10:                 length = cblk->passes[cblk->ninclpasses-1].rate;
yading@10:                 llen = av_log2(length) - av_log2(cblk->ninclpasses) - 2;
yading@10:                 if (llen < 0){
yading@10:                     pad = -llen;
yading@10:                     llen = 0;
yading@10:                 }
yading@10:                 // length of code block
yading@10:                 put_bits(s, 1, llen);
yading@10:                 put_bits(s, 0, 1);
yading@10:                 put_num(s, length, av_log2(length)+1+pad);
yading@10:             }
yading@10:         }
yading@10:     }
yading@10:     j2k_flush(s);
yading@10:     for (bandno = 0; bandno < rlevel->nbands; bandno++){
yading@10:         J2kBand *band = rlevel->band + bandno;
yading@10:         J2kPrec *prec = band->prec + precno;
yading@10:         int yi, cblknw = prec->xi1 - prec->xi0;
yading@10:         for (yi = prec->yi0; yi < prec->yi1; yi++){
yading@10:             int xi;
yading@10:             for (xi = prec->xi0; xi < prec->xi1; xi++){
yading@10:                 J2kCblk *cblk = band->cblk + yi * cblknw + xi;
yading@10:                 if (cblk->ninclpasses){
yading@10:                     if (s->buf_end - s->buf < cblk->passes[cblk->ninclpasses-1].rate)
yading@10:                         return -1;
yading@10:                     bytestream_put_buffer(&s->buf, cblk->data, cblk->passes[cblk->ninclpasses-1].rate);
yading@10:                 }
yading@10:             }
yading@10:         }
yading@10:     }
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int encode_packets(J2kEncoderContext *s, J2kTile *tile, int tileno)
yading@10: {
yading@10:     int compno, reslevelno, ret;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10:     J2kQuantStyle  *qntsty = &s->qntsty;
yading@10: 
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "tier2\n");
yading@10:     // lay-rlevel-comp-pos progression
yading@10:     for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
yading@10:         for (compno = 0; compno < s->ncomponents; compno++){
yading@10:             int precno;
yading@10:             J2kResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno;
yading@10:             for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){
yading@10:                 if (ret = encode_packet(s, reslevel, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0),
yading@10:                               qntsty->nguardbits))
yading@10:                     return ret;
yading@10:             }
yading@10:         }
yading@10:     }
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "after tier2\n");
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int getcut(J2kCblk *cblk, int64_t lambda, int dwt_norm)
yading@10: {
yading@10:     int passno, res = 0;
yading@10:     for (passno = 0; passno < cblk->npasses; passno++){
yading@10:         int dr;
yading@10:         int64_t dd;
yading@10: 
yading@10:         dr = cblk->passes[passno].rate
yading@10:            - (res ? cblk->passes[res-1].rate:0);
yading@10:         dd = cblk->passes[passno].disto
yading@10:            - (res ? cblk->passes[res-1].disto:0);
yading@10: 
yading@10:         if (((dd * dwt_norm) >> WMSEDEC_SHIFT) * dwt_norm >= dr * lambda)
yading@10:             res = passno+1;
yading@10:     }
yading@10:     return res;
yading@10: }
yading@10: 
yading@10: static void truncpasses(J2kEncoderContext *s, J2kTile *tile)
yading@10: {
yading@10:     int compno, reslevelno, bandno, cblkno, lev;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10: 
yading@10:     for (compno = 0; compno < s->ncomponents; compno++){
yading@10:         J2kComponent *comp = tile->comp + compno;
yading@10: 
yading@10:         for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){
yading@10:             J2kResLevel *reslevel = comp->reslevel + reslevelno;
yading@10: 
yading@10:             for (bandno = 0; bandno < reslevel->nbands ; bandno++){
yading@10:                 int bandpos = bandno + (reslevelno > 0);
yading@10:                 J2kBand *band = reslevel->band + bandno;
yading@10: 
yading@10:                 for (cblkno = 0; cblkno < band->cblknx * band->cblkny; cblkno++){
yading@10:                     J2kCblk *cblk = band->cblk + cblkno;
yading@10: 
yading@10:                     cblk->ninclpasses = getcut(cblk, s->lambda,
yading@10:                             (int64_t)dwt_norms[codsty->transform][bandpos][lev] * (int64_t)band->stepsize >> 13);
yading@10:                 }
yading@10:             }
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: static int encode_tile(J2kEncoderContext *s, J2kTile *tile, int tileno)
yading@10: {
yading@10:     int compno, reslevelno, bandno, ret;
yading@10:     J2kT1Context t1;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10:     for (compno = 0; compno < s->ncomponents; compno++){
yading@10:         J2kComponent *comp = s->tile[tileno].comp + compno;
yading@10: 
yading@10:         av_log(s->avctx, AV_LOG_DEBUG,"dwt\n");
yading@10:         if (ret = ff_j2k_dwt_encode(&comp->dwt, comp->data))
yading@10:             return ret;
yading@10:         av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n");
yading@10: 
yading@10:         for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){
yading@10:             J2kResLevel *reslevel = comp->reslevel + reslevelno;
yading@10: 
yading@10:             for (bandno = 0; bandno < reslevel->nbands ; bandno++){
yading@10:                 J2kBand *band = reslevel->band + bandno;
yading@10:                 int cblkx, cblky, cblkno=0, xx0, x0, xx1, y0, yy0, yy1, bandpos;
yading@10:                 yy0 = bandno == 0 ? 0 : comp->reslevel[reslevelno-1].coord[1][1] - comp->reslevel[reslevelno-1].coord[1][0];
yading@10:                 y0 = yy0;
yading@10:                 yy1 = FFMIN(ff_j2k_ceildiv(band->coord[1][0] + 1, band->codeblock_height) * band->codeblock_height,
yading@10:                             band->coord[1][1]) - band->coord[1][0] + yy0;
yading@10: 
yading@10:                 if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1])
yading@10:                     continue;
yading@10: 
yading@10:                 bandpos = bandno + (reslevelno > 0);
yading@10: 
yading@10:                 for (cblky = 0; cblky < band->cblkny; cblky++){
yading@10:                     if (reslevelno == 0 || bandno == 1)
yading@10:                         xx0 = 0;
yading@10:                     else
yading@10:                         xx0 = comp->reslevel[reslevelno-1].coord[0][1] - comp->reslevel[reslevelno-1].coord[0][0];
yading@10:                     x0 = xx0;
yading@10:                     xx1 = FFMIN(ff_j2k_ceildiv(band->coord[0][0] + 1, band->codeblock_width) * band->codeblock_width,
yading@10:                                 band->coord[0][1]) - band->coord[0][0] + xx0;
yading@10: 
yading@10:                     for (cblkx = 0; cblkx < band->cblknx; cblkx++, cblkno++){
yading@10:                         int y, x;
yading@10:                         if (codsty->transform == FF_DWT53){
yading@10:                             for (y = yy0; y < yy1; y++){
yading@10:                                 int *ptr = t1.data[y-yy0];
yading@10:                                 for (x = xx0; x < xx1; x++){
yading@10:                                     *ptr++ = comp->data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] << NMSEDEC_FRACBITS;
yading@10:                                 }
yading@10:                             }
yading@10:                         } else{
yading@10:                             for (y = yy0; y < yy1; y++){
yading@10:                                 int *ptr = t1.data[y-yy0];
yading@10:                                 for (x = xx0; x < xx1; x++){
yading@10:                                     *ptr = (comp->data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]);
yading@10:                                     *ptr = (int64_t)*ptr * (int64_t)(8192 * 8192 / band->stepsize) >> 13 - NMSEDEC_FRACBITS;
yading@10:                                     ptr++;
yading@10:                                 }
yading@10:                             }
yading@10:                         }
yading@10:                         encode_cblk(s, &t1, band->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0,
yading@10:                                     bandpos, codsty->nreslevels - reslevelno - 1);
yading@10:                         xx0 = xx1;
yading@10:                         xx1 = FFMIN(xx1 + band->codeblock_width, band->coord[0][1] - band->coord[0][0] + x0);
yading@10:                     }
yading@10:                     yy0 = yy1;
yading@10:                     yy1 = FFMIN(yy1 + band->codeblock_height, band->coord[1][1] - band->coord[1][0] + y0);
yading@10:                 }
yading@10:             }
yading@10:         }
yading@10:         av_log(s->avctx, AV_LOG_DEBUG, "after tier1\n");
yading@10:     }
yading@10: 
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "rate control\n");
yading@10:     truncpasses(s, tile);
yading@10:     if (ret = encode_packets(s, tile, tileno))
yading@10:         return ret;
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n");
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static void cleanup(J2kEncoderContext *s)
yading@10: {
yading@10:     int tileno, compno;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10: 
yading@10:     for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
yading@10:         for (compno = 0; compno < s->ncomponents; compno++){
yading@10:             J2kComponent *comp = s->tile[tileno].comp + compno;
yading@10:             ff_j2k_cleanup(comp, codsty);
yading@10:         }
yading@10:         av_freep(&s->tile[tileno].comp);
yading@10:     }
yading@10:     av_freep(&s->tile);
yading@10: }
yading@10: 
yading@10: static void reinit(J2kEncoderContext *s)
yading@10: {
yading@10:     int tileno, compno;
yading@10:     for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
yading@10:         J2kTile *tile = s->tile + tileno;
yading@10:         for (compno = 0; compno < s->ncomponents; compno++)
yading@10:             ff_j2k_reinit(tile->comp + compno, &s->codsty);
yading@10:     }
yading@10: }
yading@10: 
yading@10: static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
yading@10:                         const AVFrame *pict, int *got_packet)
yading@10: {
yading@10:     int tileno, ret;
yading@10:     J2kEncoderContext *s = avctx->priv_data;
yading@10: 
yading@10:     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*9 + FF_MIN_BUFFER_SIZE)) < 0)
yading@10:         return ret;
yading@10: 
yading@10:     // init:
yading@10:     s->buf = s->buf_start = pkt->data;
yading@10:     s->buf_end = pkt->data + pkt->size;
yading@10: 
yading@10:     s->picture = *pict;
yading@10:     avctx->coded_frame= &s->picture;
yading@10: 
yading@10:     s->lambda = s->picture.quality * LAMBDA_SCALE;
yading@10: 
yading@10:     copy_frame(s);
yading@10:     reinit(s);
yading@10: 
yading@10:     if (s->buf_end - s->buf < 2)
yading@10:         return -1;
yading@10:     bytestream_put_be16(&s->buf, J2K_SOC);
yading@10:     if (ret = put_siz(s))
yading@10:         return ret;
yading@10:     if (ret = put_cod(s))
yading@10:         return ret;
yading@10:     if (ret = put_qcd(s, 0))
yading@10:         return ret;
yading@10: 
yading@10:     for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){
yading@10:         uint8_t *psotptr;
yading@10:         if (!(psotptr = put_sot(s, tileno)))
yading@10:             return -1;
yading@10:         if (s->buf_end - s->buf < 2)
yading@10:             return -1;
yading@10:         bytestream_put_be16(&s->buf, J2K_SOD);
yading@10:         if (ret = encode_tile(s, s->tile + tileno, tileno))
yading@10:             return ret;
yading@10:         bytestream_put_be32(&psotptr, s->buf - psotptr + 6);
yading@10:     }
yading@10:     if (s->buf_end - s->buf < 2)
yading@10:         return -1;
yading@10:     bytestream_put_be16(&s->buf, J2K_EOC);
yading@10: 
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "end\n");
yading@10:     pkt->size = s->buf - s->buf_start;
yading@10:     pkt->flags |= AV_PKT_FLAG_KEY;
yading@10:     *got_packet = 1;
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static av_cold int j2kenc_init(AVCodecContext *avctx)
yading@10: {
yading@10:     int i, ret;
yading@10:     J2kEncoderContext *s = avctx->priv_data;
yading@10:     J2kCodingStyle *codsty = &s->codsty;
yading@10:     J2kQuantStyle  *qntsty = &s->qntsty;
yading@10: 
yading@10:     s->avctx = avctx;
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "init\n");
yading@10: 
yading@10:     // defaults:
yading@10:     // TODO: implement setting non-standard precinct size
yading@10:     codsty->log2_prec_width  = 15;
yading@10:     codsty->log2_prec_height = 15;
yading@10:     codsty->nreslevels       = 7;
yading@10:     codsty->log2_cblk_width  = 4;
yading@10:     codsty->log2_cblk_height = 4;
yading@10:     codsty->transform        = 1;
yading@10: 
yading@10:     qntsty->nguardbits       = 1;
yading@10: 
yading@10:     s->tile_width            = 256;
yading@10:     s->tile_height           = 256;
yading@10: 
yading@10:     if (codsty->transform == FF_DWT53)
yading@10:         qntsty->quantsty = J2K_QSTY_NONE;
yading@10:     else
yading@10:         qntsty->quantsty = J2K_QSTY_SE;
yading@10: 
yading@10:     s->width = avctx->width;
yading@10:     s->height = avctx->height;
yading@10: 
yading@10:     for (i = 0; i < 3; i++)
yading@10:         s->cbps[i] = 8;
yading@10: 
yading@10:     if (avctx->pix_fmt == AV_PIX_FMT_RGB24){
yading@10:         s->ncomponents = 3;
yading@10:     } else if (avctx->pix_fmt == AV_PIX_FMT_GRAY8){
yading@10:         s->ncomponents = 1;
yading@10:     } else{ // planar YUV
yading@10:         s->planar = 1;
yading@10:         s->ncomponents = 3;
yading@10:         avcodec_get_chroma_sub_sample(avctx->pix_fmt,
yading@10:                 s->chroma_shift, s->chroma_shift + 1);
yading@10:     }
yading@10: 
yading@10:     ff_j2k_init_tier1_luts();
yading@10: 
yading@10:     init_luts();
yading@10: 
yading@10:     init_quantization(s);
yading@10:     if (ret=init_tiles(s))
yading@10:         return ret;
yading@10: 
yading@10:     av_log(s->avctx, AV_LOG_DEBUG, "after init\n");
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int j2kenc_destroy(AVCodecContext *avctx)
yading@10: {
yading@10:     J2kEncoderContext *s = avctx->priv_data;
yading@10: 
yading@10:     cleanup(s);
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: AVCodec ff_jpeg2000_encoder = {
yading@10:     .name           = "j2k",
yading@10:     .type           = AVMEDIA_TYPE_VIDEO,
yading@10:     .id             = AV_CODEC_ID_JPEG2000,
yading@10:     .priv_data_size = sizeof(J2kEncoderContext),
yading@10:     .init           = j2kenc_init,
yading@10:     .encode2        = encode_frame,
yading@10:     .close          = j2kenc_destroy,
yading@10:     .capabilities   = CODEC_CAP_EXPERIMENTAL,
yading@10:     .long_name      = NULL_IF_CONFIG_SMALL("JPEG 2000"),
yading@10:     .pix_fmts       = (const enum AVPixelFormat[]) {
yading@10:         AV_PIX_FMT_RGB24, AV_PIX_FMT_YUV444P, AV_PIX_FMT_GRAY8,
yading@10: /*      AV_PIX_FMT_YUV420P,
yading@10:         AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
yading@10:         AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,*/
yading@10:         AV_PIX_FMT_NONE
yading@10:     }
yading@10: };