/* * JPEG2000 image encoder * Copyright (c) 2007 Kamil Nowosad * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * ********************************************************************************************************************** * * * * This source code incorporates work covered by the following copyright and * permission notice: * * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2007, Professor Benoit Macq * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * Copyright (c) 2007, Callum Lerwick * Copyright (c) 2020, Gautam Ramakrishnan * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /** * JPEG2000 image encoder * @file * @author Kamil Nowosad */ #include #include "avcodec.h" #include "encode.h" #include "internal.h" #include "bytestream.h" #include "jpeg2000.h" #include "libavutil/common.h" #include "libavutil/pixdesc.h" #include "libavutil/opt.h" #include "libavutil/intreadwrite.h" #include "libavutil/avstring.h" #include "libavutil/thread.h" #define NMSEDEC_BITS 7 #define NMSEDEC_FRACBITS (NMSEDEC_BITS-1) #define WMSEDEC_SHIFT 13 ///< must be >= 13 #define LAMBDA_SCALE (100000000LL << (WMSEDEC_SHIFT - 13)) #define CODEC_JP2 1 #define CODEC_J2K 0 static int lut_nmsedec_ref [1<y1 - comp->y0; i++) ff_jpeg2000_printv(comp->i_data + i * (comp->x1 - comp->x0), comp->x1 - comp->x0); } static void dump(Jpeg2000EncoderContext *s, FILE *fd) { int tileno, compno, reslevelno, bandno, precno; fprintf(fd, "XSiz = %d, YSiz = %d, tile_width = %d, tile_height = %d\n" "numXtiles = %d, numYtiles = %d, ncomponents = %d\n" "tiles:\n", s->width, s->height, s->tile_width, s->tile_height, s->numXtiles, s->numYtiles, s->ncomponents); for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ Jpeg2000Tile *tile = s->tile + tileno; nspaces(fd, 2); fprintf(fd, "tile %d:\n", tileno); for(compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = tile->comp + compno; nspaces(fd, 4); fprintf(fd, "component %d:\n", compno); nspaces(fd, 4); fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d\n", comp->x0, comp->x1, comp->y0, comp->y1); for(reslevelno = 0; reslevelno < s->nreslevels; reslevelno++){ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; nspaces(fd, 6); fprintf(fd, "reslevel %d:\n", reslevelno); nspaces(fd, 6); fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d, nbands = %d\n", reslevel->x0, reslevel->x1, reslevel->y0, reslevel->y1, reslevel->nbands); for(bandno = 0; bandno < reslevel->nbands; bandno++){ Jpeg2000Band *band = reslevel->band + bandno; nspaces(fd, 8); fprintf(fd, "band %d:\n", bandno); nspaces(fd, 8); fprintf(fd, "x0 = %d, x1 = %d, y0 = %d, y1 = %d," "codeblock_width = %d, codeblock_height = %d cblknx = %d cblkny = %d\n", band->x0, band->x1, band->y0, band->y1, band->codeblock_width, band->codeblock_height, band->cblknx, band->cblkny); for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){ Jpeg2000Prec *prec = band->prec + precno; nspaces(fd, 10); fprintf(fd, "prec %d:\n", precno); nspaces(fd, 10); fprintf(fd, "xi0 = %d, xi1 = %d, yi0 = %d, yi1 = %d\n", prec->xi0, prec->xi1, prec->yi0, prec->yi1); } } } } } } #endif /* bitstream routines */ /** put n times val bit */ static void put_bits(Jpeg2000EncoderContext *s, int val, int n) // TODO: optimize { while (n-- > 0){ if (s->bit_index == 8) { s->bit_index = *s->buf == 0xff; *(++s->buf) = 0; } *s->buf |= val << (7 - s->bit_index++); } } /** put n least significant bits of a number num */ static void put_num(Jpeg2000EncoderContext *s, int num, int n) { while(--n >= 0) put_bits(s, (num >> n) & 1, 1); } /** flush the bitstream */ static void j2k_flush(Jpeg2000EncoderContext *s) { if (s->bit_index){ s->bit_index = 0; s->buf++; } } /* tag tree routines */ /** code the value stored in node */ static void tag_tree_code(Jpeg2000EncoderContext *s, Jpeg2000TgtNode *node, int threshold) { Jpeg2000TgtNode *stack[30]; int sp = -1, curval = 0; while(node->parent){ stack[++sp] = node; node = node->parent; } while (1) { if (curval > node->temp_val) node->temp_val = curval; else { curval = node->temp_val; } if (node->val >= threshold) { put_bits(s, 0, threshold - curval); curval = threshold; } else { put_bits(s, 0, node->val - curval); curval = node->val; if (!node->vis) { put_bits(s, 1, 1); node->vis = 1; } } node->temp_val = curval; if (sp < 0) break; node = stack[sp--]; } } /** update the value in node */ static void tag_tree_update(Jpeg2000TgtNode *node) { int lev = 0; while (node->parent){ if (node->parent->val <= node->val) break; node->parent->val = node->val; node = node->parent; lev++; } } static int put_siz(Jpeg2000EncoderContext *s) { int i; if (s->buf_end - s->buf < 40 + 3 * s->ncomponents) return -1; bytestream_put_be16(&s->buf, JPEG2000_SIZ); bytestream_put_be16(&s->buf, 38 + 3 * s->ncomponents); // Lsiz bytestream_put_be16(&s->buf, 0); // Rsiz bytestream_put_be32(&s->buf, s->width); // width bytestream_put_be32(&s->buf, s->height); // height bytestream_put_be32(&s->buf, 0); // X0Siz bytestream_put_be32(&s->buf, 0); // Y0Siz bytestream_put_be32(&s->buf, s->tile_width); // XTSiz bytestream_put_be32(&s->buf, s->tile_height); // YTSiz bytestream_put_be32(&s->buf, 0); // XT0Siz bytestream_put_be32(&s->buf, 0); // YT0Siz bytestream_put_be16(&s->buf, s->ncomponents); // CSiz for (i = 0; i < s->ncomponents; i++){ // Ssiz_i XRsiz_i, YRsiz_i bytestream_put_byte(&s->buf, s->cbps[i] - 1); bytestream_put_byte(&s->buf, i?1<chroma_shift[0]:1); bytestream_put_byte(&s->buf, i?1<chroma_shift[1]:1); } return 0; } static int put_cod(Jpeg2000EncoderContext *s) { Jpeg2000CodingStyle *codsty = &s->codsty; uint8_t scod = 0; if (s->buf_end - s->buf < 14) return -1; bytestream_put_be16(&s->buf, JPEG2000_COD); bytestream_put_be16(&s->buf, 12); // Lcod if (s->sop) scod |= JPEG2000_CSTY_SOP; if (s->eph) scod |= JPEG2000_CSTY_EPH; bytestream_put_byte(&s->buf, scod); // Scod // SGcod bytestream_put_byte(&s->buf, s->prog); // progression level bytestream_put_be16(&s->buf, s->nlayers); // num of layers if(s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){ bytestream_put_byte(&s->buf, 0); // unspecified }else{ bytestream_put_byte(&s->buf, 0); // unspecified } // SPcod bytestream_put_byte(&s->buf, codsty->nreslevels - 1); // num of decomp. levels bytestream_put_byte(&s->buf, codsty->log2_cblk_width-2); // cblk width bytestream_put_byte(&s->buf, codsty->log2_cblk_height-2); // cblk height bytestream_put_byte(&s->buf, 0); // cblk style bytestream_put_byte(&s->buf, codsty->transform == FF_DWT53); // transformation return 0; } static int put_qcd(Jpeg2000EncoderContext *s, int compno) { int i, size; Jpeg2000CodingStyle *codsty = &s->codsty; Jpeg2000QuantStyle *qntsty = &s->qntsty; if (qntsty->quantsty == JPEG2000_QSTY_NONE) size = 4 + 3 * (codsty->nreslevels-1); else // QSTY_SE size = 5 + 6 * (codsty->nreslevels-1); if (s->buf_end - s->buf < size + 2) return -1; bytestream_put_be16(&s->buf, JPEG2000_QCD); bytestream_put_be16(&s->buf, size); // LQcd bytestream_put_byte(&s->buf, (qntsty->nguardbits << 5) | qntsty->quantsty); // Sqcd if (qntsty->quantsty == JPEG2000_QSTY_NONE) for (i = 0; i < codsty->nreslevels * 3 - 2; i++) bytestream_put_byte(&s->buf, qntsty->expn[i] << 3); else // QSTY_SE for (i = 0; i < codsty->nreslevels * 3 - 2; i++) bytestream_put_be16(&s->buf, (qntsty->expn[i] << 11) | qntsty->mant[i]); return 0; } static int put_com(Jpeg2000EncoderContext *s, int compno) { int size = 4 + strlen(LIBAVCODEC_IDENT); if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT) return 0; if (s->buf_end - s->buf < size + 2) return -1; bytestream_put_be16(&s->buf, JPEG2000_COM); bytestream_put_be16(&s->buf, size); bytestream_put_be16(&s->buf, 1); // General use (ISO/IEC 8859-15 (Latin) values) bytestream_put_buffer(&s->buf, LIBAVCODEC_IDENT, strlen(LIBAVCODEC_IDENT)); return 0; } static uint8_t *put_sot(Jpeg2000EncoderContext *s, int tileno) { uint8_t *psotptr; if (s->buf_end - s->buf < 12) return NULL; bytestream_put_be16(&s->buf, JPEG2000_SOT); bytestream_put_be16(&s->buf, 10); // Lsot bytestream_put_be16(&s->buf, tileno); // Isot psotptr = s->buf; bytestream_put_be32(&s->buf, 0); // Psot (filled in later) bytestream_put_byte(&s->buf, 0); // TPsot bytestream_put_byte(&s->buf, 1); // TNsot return psotptr; } static void compute_rates(Jpeg2000EncoderContext* s) { int i, j; int layno, compno; for (i = 0; i < s->numYtiles; i++) { for (j = 0; j < s->numXtiles; j++) { Jpeg2000Tile *tile = &s->tile[s->numXtiles * i + j]; for (compno = 0; compno < s->ncomponents; compno++) { int tilew = tile->comp[compno].coord[0][1] - tile->comp[compno].coord[0][0]; int tileh = tile->comp[compno].coord[1][1] - tile->comp[compno].coord[1][0]; int scale = (compno?1 << s->chroma_shift[0]:1) * (compno?1 << s->chroma_shift[1]:1); for (layno = 0; layno < s->nlayers; layno++) { if (s->layer_rates[layno] > 0) { tile->layer_rates[layno] += (double)(tilew * tileh) * s->ncomponents * s->cbps[compno] / (double)(s->layer_rates[layno] * 8 * scale); } else { tile->layer_rates[layno] = 0.0; } } } } } } /** * compute the sizes of tiles, resolution levels, bands, etc. * allocate memory for them * divide the input image into tile-components */ static int init_tiles(Jpeg2000EncoderContext *s) { int tileno, tilex, tiley, compno; Jpeg2000CodingStyle *codsty = &s->codsty; Jpeg2000QuantStyle *qntsty = &s->qntsty; s->numXtiles = ff_jpeg2000_ceildiv(s->width, s->tile_width); s->numYtiles = ff_jpeg2000_ceildiv(s->height, s->tile_height); s->tile = av_calloc(s->numXtiles, s->numYtiles * sizeof(Jpeg2000Tile)); if (!s->tile) return AVERROR(ENOMEM); for (tileno = 0, tiley = 0; tiley < s->numYtiles; tiley++) for (tilex = 0; tilex < s->numXtiles; tilex++, tileno++){ Jpeg2000Tile *tile = s->tile + tileno; tile->comp = av_calloc(s->ncomponents, sizeof(*tile->comp)); if (!tile->comp) return AVERROR(ENOMEM); tile->layer_rates = av_calloc(s->nlayers, sizeof(*tile->layer_rates)); if (!tile->layer_rates) return AVERROR(ENOMEM); for (compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = tile->comp + compno; int ret, i, j; comp->coord[0][0] = comp->coord_o[0][0] = tilex * s->tile_width; comp->coord[0][1] = comp->coord_o[0][1] = FFMIN((tilex+1)*s->tile_width, s->width); comp->coord[1][0] = comp->coord_o[1][0] = tiley * s->tile_height; comp->coord[1][1] = comp->coord_o[1][1] = FFMIN((tiley+1)*s->tile_height, s->height); if (compno > 0) for (i = 0; i < 2; i++) for (j = 0; j < 2; j++) comp->coord[i][j] = comp->coord_o[i][j] = ff_jpeg2000_ceildivpow2(comp->coord[i][j], s->chroma_shift[i]); if ((ret = ff_jpeg2000_init_component(comp, codsty, qntsty, s->cbps[compno], compno?1<chroma_shift[0]:1, compno?1<chroma_shift[1]:1, s->avctx )) < 0) return ret; } } compute_rates(s); return 0; } #define COPY_FRAME(D, PIXEL) \ static void copy_frame_ ##D(Jpeg2000EncoderContext *s) \ { \ int tileno, compno, i, y, x; \ PIXEL *line; \ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ \ Jpeg2000Tile *tile = s->tile + tileno; \ if (s->planar){ \ for (compno = 0; compno < s->ncomponents; compno++){ \ Jpeg2000Component *comp = tile->comp + compno; \ int *dst = comp->i_data; \ int cbps = s->cbps[compno]; \ line = (PIXEL*)s->picture->data[compno] \ + comp->coord[1][0] * (s->picture->linesize[compno] / sizeof(PIXEL)) \ + comp->coord[0][0]; \ for (y = comp->coord[1][0]; y < comp->coord[1][1]; y++){ \ PIXEL *ptr = line; \ for (x = comp->coord[0][0]; x < comp->coord[0][1]; x++) \ *dst++ = *ptr++ - (1 << (cbps - 1)); \ line += s->picture->linesize[compno] / sizeof(PIXEL); \ } \ } \ } else{ \ line = (PIXEL*)s->picture->data[0] + tile->comp[0].coord[1][0] * (s->picture->linesize[0] / sizeof(PIXEL)) \ + tile->comp[0].coord[0][0] * s->ncomponents; \ \ i = 0; \ for (y = tile->comp[0].coord[1][0]; y < tile->comp[0].coord[1][1]; y++){ \ PIXEL *ptr = line; \ for (x = tile->comp[0].coord[0][0]; x < tile->comp[0].coord[0][1]; x++, i++){ \ for (compno = 0; compno < s->ncomponents; compno++){ \ int cbps = s->cbps[compno]; \ tile->comp[compno].i_data[i] = *ptr++ - (1 << (cbps - 1)); \ } \ } \ line += s->picture->linesize[0] / sizeof(PIXEL); \ } \ } \ } \ } COPY_FRAME(8, uint8_t) COPY_FRAME(16, uint16_t) static void init_quantization(Jpeg2000EncoderContext *s) { int compno, reslevelno, bandno; Jpeg2000QuantStyle *qntsty = &s->qntsty; Jpeg2000CodingStyle *codsty = &s->codsty; for (compno = 0; compno < s->ncomponents; compno++){ int gbandno = 0; for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){ int nbands, lev = codsty->nreslevels - reslevelno - 1; nbands = reslevelno ? 3 : 1; for (bandno = 0; bandno < nbands; bandno++, gbandno++){ int expn, mant = 0; if (codsty->transform == FF_DWT97_INT){ int bandpos = bandno + (reslevelno>0), ss = 81920000 / dwt_norms[0][bandpos][lev], log = av_log2(ss); mant = (11 - log < 0 ? ss >> log - 11 : ss << 11 - log) & 0x7ff; expn = s->cbps[compno] - log + 13; } else expn = ((bandno&2)>>1) + (reslevelno>0) + s->cbps[compno]; qntsty->expn[gbandno] = expn; qntsty->mant[gbandno] = mant; } } } } static void init_luts(void) { int i, a, mask = ~((1<> (NMSEDEC_BITS-2)&2) + 1; lut_nmsedec_ref[i] = FFMAX((a - 2) * (i << (13 - NMSEDEC_FRACBITS)) + (1 << 13) - (a * a << 11), 0); lut_nmsedec_ref0[i] = FFMAX(((i * i - (i << NMSEDEC_BITS) + (1 << 2 * NMSEDEC_FRACBITS) + (1 << (NMSEDEC_FRACBITS - 1))) & mask) << 1, 0); } ff_jpeg2000_init_tier1_luts(); } /* tier-1 routines */ static int getnmsedec_sig(int x, int bpno) { if (bpno > NMSEDEC_FRACBITS) return lut_nmsedec_sig[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)]; return lut_nmsedec_sig0[x & ((1 << NMSEDEC_BITS) - 1)]; } static int getnmsedec_ref(int x, int bpno) { if (bpno > NMSEDEC_FRACBITS) return lut_nmsedec_ref[(x >> (bpno - NMSEDEC_FRACBITS)) & ((1 << NMSEDEC_BITS) - 1)]; return lut_nmsedec_ref0[x & ((1 << NMSEDEC_BITS) - 1)]; } static void encode_sigpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno) { int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS); for (y0 = 0; y0 < height; y0 += 4) for (x = 0; x < width; x++) for (y = y0; y < height && y < y0+4; y++){ if (!(t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG) && (t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG_NB)){ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno), bit = t1->data[(y) * t1->stride + x] & mask ? 1 : 0; ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, bit); if (bit){ int xorbit; int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit); *nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS); ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15); } t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_VIS; } } } static void encode_refpass(Jpeg2000T1Context *t1, int width, int height, int *nmsedec, int bpno) { int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS); for (y0 = 0; y0 < height; y0 += 4) for (x = 0; x < width; x++) for (y = y0; y < height && y < y0+4; y++) if ((t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG){ int ctxno = ff_jpeg2000_getrefctxno(t1->flags[(y+1) * t1->stride + x+1]); *nmsedec += getnmsedec_ref(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0); t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_REF; } } static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno) { int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS); for (y0 = 0; y0 < height; y0 += 4) for (x = 0; x < width; x++){ if (y0 + 3 < height && !( (t1->flags[(y0+1) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || (t1->flags[(y0+2) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || (t1->flags[(y0+3) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || (t1->flags[(y0+4) * t1->stride + x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)))) { // aggregation mode int rlen; for (rlen = 0; rlen < 4; rlen++) if (t1->data[(y0+rlen) * t1->stride + x] & mask) break; ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL, rlen != 4); if (rlen == 4) continue; ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen >> 1); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1); for (y = y0 + rlen; y < y0 + 4; y++){ if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno); if (y > y0 + rlen) ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0); if (t1->data[(y) * t1->stride + x] & mask){ // newly significant int xorbit; int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit); *nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit); ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15); } } t1->flags[(y+1) * t1->stride + x+1] &= ~JPEG2000_T1_VIS; } } else{ for (y = y0; y < y0 + 4 && y < height; y++){ if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1], bandno); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[(y) * t1->stride + x] & mask ? 1:0); if (t1->data[(y) * t1->stride + x] & mask){ // newly significant int xorbit; int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1], &xorbit); *nmsedec += getnmsedec_sig(t1->data[(y) * t1->stride + x], bpno + NMSEDEC_FRACBITS); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[(y+1) * t1->stride + x+1] >> 15) ^ xorbit); ff_jpeg2000_set_significance(t1, x, y, t1->flags[(y+1) * t1->stride + x+1] >> 15); } } t1->flags[(y+1) * t1->stride + x+1] &= ~JPEG2000_T1_VIS; } } } } static void encode_cblk(Jpeg2000EncoderContext *s, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, Jpeg2000Tile *tile, int width, int height, int bandpos, int lev) { int pass_t = 2, passno, x, y, max=0, nmsedec, bpno; int64_t wmsedec = 0; memset(t1->flags, 0, t1->stride * (height + 2) * sizeof(*t1->flags)); for (y = 0; y < height; y++){ for (x = 0; x < width; x++){ if (t1->data[(y) * t1->stride + x] < 0){ t1->flags[(y+1) * t1->stride + x+1] |= JPEG2000_T1_SGN; t1->data[(y) * t1->stride + x] = -t1->data[(y) * t1->stride + x]; } max = FFMAX(max, t1->data[(y) * t1->stride + x]); } } if (max == 0){ cblk->nonzerobits = 0; bpno = 0; } else{ cblk->nonzerobits = av_log2(max) + 1 - NMSEDEC_FRACBITS; bpno = cblk->nonzerobits - 1; } cblk->data[0] = 0; ff_mqc_initenc(&t1->mqc, cblk->data + 1); for (passno = 0; bpno >= 0; passno++){ nmsedec=0; switch(pass_t){ case 0: encode_sigpass(t1, width, height, bandpos, &nmsedec, bpno); break; case 1: encode_refpass(t1, width, height, &nmsedec, bpno); break; case 2: encode_clnpass(t1, width, height, bandpos, &nmsedec, bpno); break; } cblk->passes[passno].rate = ff_mqc_flush_to(&t1->mqc, cblk->passes[passno].flushed, &cblk->passes[passno].flushed_len); cblk->passes[passno].rate -= cblk->passes[passno].flushed_len; wmsedec += (int64_t)nmsedec << (2*bpno); cblk->passes[passno].disto = wmsedec; if (++pass_t == 3){ pass_t = 0; bpno--; } } cblk->npasses = passno; cblk->ninclpasses = passno; if (passno) { cblk->passes[passno-1].rate = ff_mqc_flush_to(&t1->mqc, cblk->passes[passno-1].flushed, &cblk->passes[passno-1].flushed_len); cblk->passes[passno-1].rate -= cblk->passes[passno-1].flushed_len; } } /* tier-2 routines: */ static void putnumpasses(Jpeg2000EncoderContext *s, int n) { if (n == 1) put_num(s, 0, 1); else if (n == 2) put_num(s, 2, 2); else if (n <= 5) put_num(s, 0xc | (n-3), 4); else if (n <= 36) put_num(s, 0x1e0 | (n-6), 9); else put_num(s, 0xff80 | (n-37), 16); } static int encode_packet(Jpeg2000EncoderContext *s, Jpeg2000ResLevel *rlevel, int layno, int precno, uint8_t *expn, int numgbits, int packetno, int nlayers) { int bandno, empty = 1; int i; // init bitstream *s->buf = 0; s->bit_index = 0; if (s->sop) { bytestream_put_be16(&s->buf, JPEG2000_SOP); bytestream_put_be16(&s->buf, 4); bytestream_put_be16(&s->buf, packetno); } // header if (!layno) { for (bandno = 0; bandno < rlevel->nbands; bandno++) { Jpeg2000Band *band = rlevel->band + bandno; if (band->coord[0][0] < band->coord[0][1] && band->coord[1][0] < band->coord[1][1]) { Jpeg2000Prec *prec = band->prec + precno; int nb_cblks = prec->nb_codeblocks_height * prec->nb_codeblocks_width; int pos; ff_tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 99); ff_tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 99); for (pos = 0; pos < nb_cblks; pos++) { Jpeg2000Cblk *cblk = &prec->cblk[pos]; prec->zerobits[pos].val = expn[bandno] + numgbits - 1 - cblk->nonzerobits; cblk->incl = 0; cblk->lblock = 3; tag_tree_update(prec->zerobits + pos); for (i = 0; i < nlayers; i++) { if (cblk->layers[i].npasses > 0) { prec->cblkincl[pos].val = i; break; } } if (i == nlayers) prec->cblkincl[pos].val = i; tag_tree_update(prec->cblkincl + pos); } } } } // is the packet empty? for (bandno = 0; bandno < rlevel->nbands; bandno++){ Jpeg2000Band *band = rlevel->band + bandno; if (band->coord[0][0] < band->coord[0][1] && band->coord[1][0] < band->coord[1][1]) { Jpeg2000Prec *prec = band->prec + precno; int nb_cblks = prec->nb_codeblocks_height * prec->nb_codeblocks_width; int pos; for (pos = 0; pos < nb_cblks; pos++) { Jpeg2000Cblk *cblk = &prec->cblk[pos]; if (cblk->layers[layno].npasses) { empty = 0; break; } } if (!empty) break; } } put_bits(s, !empty, 1); if (empty){ j2k_flush(s); if (s->eph) bytestream_put_be16(&s->buf, JPEG2000_EPH); return 0; } for (bandno = 0; bandno < rlevel->nbands; bandno++) { Jpeg2000Band *band = rlevel->band + bandno; Jpeg2000Prec *prec = band->prec + precno; int yi, xi, pos; int cblknw = prec->nb_codeblocks_width; if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1]) continue; for (pos=0, yi = 0; yi < prec->nb_codeblocks_height; yi++) { for (xi = 0; xi < cblknw; xi++, pos++){ int llen = 0, length; Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi; if (s->buf_end - s->buf < 20) // approximately return -1; // inclusion information if (!cblk->incl) tag_tree_code(s, prec->cblkincl + pos, layno + 1); else { put_bits(s, cblk->layers[layno].npasses > 0, 1); } if (!cblk->layers[layno].npasses) continue; // zerobits information if (!cblk->incl) { tag_tree_code(s, prec->zerobits + pos, 100); cblk->incl = 1; } // number of passes putnumpasses(s, cblk->layers[layno].npasses); length = cblk->layers[layno].data_len; if (layno == nlayers - 1 && cblk->layers[layno].cum_passes){ length += cblk->passes[cblk->layers[layno].cum_passes-1].flushed_len; } if (cblk->lblock + av_log2(cblk->layers[layno].npasses) < av_log2(length) + 1) { llen = av_log2(length) + 1 - cblk->lblock - av_log2(cblk->layers[layno].npasses); } // length of code block cblk->lblock += llen; put_bits(s, 1, llen); put_bits(s, 0, 1); put_num(s, length, cblk->lblock + av_log2(cblk->layers[layno].npasses)); } } } j2k_flush(s); if (s->eph) { bytestream_put_be16(&s->buf, JPEG2000_EPH); } for (bandno = 0; bandno < rlevel->nbands; bandno++) { Jpeg2000Band *band = rlevel->band + bandno; Jpeg2000Prec *prec = band->prec + precno; int yi, cblknw = prec->nb_codeblocks_width; for (yi =0; yi < prec->nb_codeblocks_height; yi++) { int xi; for (xi = 0; xi < cblknw; xi++){ Jpeg2000Cblk *cblk = prec->cblk + yi * cblknw + xi; if (cblk->layers[layno].npasses) { if (s->buf_end - s->buf < cblk->layers[layno].data_len + 2) return -1; bytestream_put_buffer(&s->buf, cblk->layers[layno].data_start + 1, cblk->layers[layno].data_len); if (layno == nlayers - 1 && cblk->layers[layno].cum_passes) { bytestream_put_buffer(&s->buf, cblk->passes[cblk->layers[layno].cum_passes-1].flushed, cblk->passes[cblk->layers[layno].cum_passes-1].flushed_len); } } } } } return 0; } static int encode_packets(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno, int nlayers) { int compno, reslevelno, layno, ret; Jpeg2000CodingStyle *codsty = &s->codsty; Jpeg2000QuantStyle *qntsty = &s->qntsty; int packetno = 0; int step_x, step_y; int x, y; int tile_coord[2][2]; int col = tileno % s->numXtiles; int row = tileno / s->numXtiles; tile_coord[0][0] = col * s->tile_width; tile_coord[0][1] = FFMIN(tile_coord[0][0] + s->tile_width, s->width); tile_coord[1][0] = row * s->tile_height; tile_coord[1][1] = FFMIN(tile_coord[1][0] + s->tile_height, s->height); av_log(s->avctx, AV_LOG_DEBUG, "tier2\n"); // lay-rlevel-comp-pos progression switch (s->prog) { case JPEG2000_PGOD_LRCP: for (layno = 0; layno < nlayers; layno++) { for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){ for (compno = 0; compno < s->ncomponents; compno++){ int precno; Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno; for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){ if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0), qntsty->nguardbits, packetno++, nlayers)) < 0) return ret; } } } } break; case JPEG2000_PGOD_RLCP: for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){ for (layno = 0; layno < nlayers; layno++) { for (compno = 0; compno < s->ncomponents; compno++){ int precno; Jpeg2000ResLevel *reslevel = s->tile[tileno].comp[compno].reslevel + reslevelno; for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){ if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0), qntsty->nguardbits, packetno++, nlayers)) < 0) return ret; } } } } break; case JPEG2000_PGOD_RPCL: for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { int precno; step_x = 30; step_y = 30; for (compno = 0; compno < s->ncomponents; compno++) { Jpeg2000Component *comp = tile->comp + compno; if (reslevelno < codsty->nreslevels) { uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno); step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno); } } step_x = 1<ncomponents; compno++) { Jpeg2000Component *comp = tile->comp + compno; uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0}; unsigned prcx, prcy; int trx0, try0; trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno); try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno); if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 || (y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height))))) continue; if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 || (x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width))))) continue; // check if a precinct exists prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width; prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height; prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width; prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height; precno = prcx + reslevel->num_precincts_x * prcy; if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) { av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n", prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y); continue; } for (layno = 0; layno < nlayers; layno++) { if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0), qntsty->nguardbits, packetno++, nlayers)) < 0) return ret; } } } } } break; case JPEG2000_PGOD_PCRL: step_x = 32; step_y = 32; for (compno = 0; compno < s->ncomponents; compno++) { Jpeg2000Component *comp = tile->comp + compno; for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno); step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno); } } if (step_x >= 31 || step_y >= 31){ avpriv_request_sample(s->avctx, "PCRL with large step"); return AVERROR_PATCHWELCOME; } step_x = 1<ncomponents; compno++) { Jpeg2000Component *comp = tile->comp + compno; int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0}; for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { unsigned prcx, prcy; int precno; uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; int trx0, try0; trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno); try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno); if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 || (y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height))))) continue; if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 || (x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width))))) continue; // check if a precinct exists prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width; prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height; prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width; prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height; precno = prcx + reslevel->num_precincts_x * prcy; if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) { av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n", prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y); continue; } for (layno = 0; layno < nlayers; layno++) { if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0), qntsty->nguardbits, packetno++, nlayers)) < 0) return ret; } } } } } break; case JPEG2000_PGOD_CPRL: for (compno = 0; compno < s->ncomponents; compno++) { Jpeg2000Component *comp = tile->comp + compno; int log_subsampling[2] = { compno?s->chroma_shift[0]:0, compno?s->chroma_shift[1]:0}; step_x = 32; step_y = 32; for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno); step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno); } if (step_x >= 31 || step_y >= 31){ avpriv_request_sample(s->avctx, "CPRL with large step"); return AVERROR_PATCHWELCOME; } step_x = 1<nreslevels; reslevelno++) { unsigned prcx, prcy; int precno; int trx0, try0; uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; trx0 = ff_jpeg2000_ceildivpow2(tile_coord[0][0], log_subsampling[0] + reducedresno); try0 = ff_jpeg2000_ceildivpow2(tile_coord[1][0], log_subsampling[1] + reducedresno); if (!(y % ((uint64_t)1 << (reslevel->log2_prec_height + reducedresno + log_subsampling[1])) == 0 || (y == tile_coord[1][0] && (try0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_height))))) continue; if (!(x % ((uint64_t)1 << (reslevel->log2_prec_width + reducedresno + log_subsampling[0])) == 0 || (x == tile_coord[0][0] && (trx0 << reducedresno) % (1U << (reducedresno + reslevel->log2_prec_width))))) continue; // check if a precinct exists prcx = ff_jpeg2000_ceildivpow2(x, log_subsampling[0] + reducedresno) >> reslevel->log2_prec_width; prcy = ff_jpeg2000_ceildivpow2(y, log_subsampling[1] + reducedresno) >> reslevel->log2_prec_height; prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> reslevel->log2_prec_width; prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> reslevel->log2_prec_height; precno = prcx + reslevel->num_precincts_x * prcy; if (prcx >= reslevel->num_precincts_x || prcy >= reslevel->num_precincts_y) { av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n", prcx, prcy, reslevel->num_precincts_x, reslevel->num_precincts_y); continue; } for (layno = 0; layno < nlayers; layno++) { if ((ret = encode_packet(s, reslevel, layno, precno, qntsty->expn + (reslevelno ? 3*reslevelno-2 : 0), qntsty->nguardbits, packetno++, nlayers)) < 0) return ret; } } } } } } av_log(s->avctx, AV_LOG_DEBUG, "after tier2\n"); return 0; } static void makelayer(Jpeg2000EncoderContext *s, int layno, double thresh, Jpeg2000Tile* tile, int final) { int compno, resno, bandno, precno, cblkno; int passno; for (compno = 0; compno < s->ncomponents; compno++) { Jpeg2000Component *comp = &tile->comp[compno]; for (resno = 0; resno < s->codsty.nreslevels; resno++) { Jpeg2000ResLevel *reslevel = comp->reslevel + resno; for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){ for (bandno = 0; bandno < reslevel->nbands ; bandno++){ Jpeg2000Band *band = reslevel->band + bandno; Jpeg2000Prec *prec = band->prec + precno; for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){ Jpeg2000Cblk *cblk = prec->cblk + cblkno; Jpeg2000Layer *layer = &cblk->layers[layno]; int n; if (layno == 0) { cblk->ninclpasses = 0; } n = cblk->ninclpasses; if (thresh < 0) { n = cblk->npasses; } else { for (passno = cblk->ninclpasses; passno < cblk->npasses; passno++) { int32_t dr; double dd; Jpeg2000Pass *pass = &cblk->passes[passno]; if (n == 0) { dr = pass->rate; dd = pass->disto; } else { dr = pass->rate - cblk->passes[n - 1].rate; dd = pass->disto - cblk->passes[n-1].disto; } if (!dr) { if (dd != 0.0) { n = passno + 1; } continue; } if (thresh - (dd / dr) < DBL_EPSILON) n = passno + 1; } } layer->npasses = n - cblk->ninclpasses; layer->cum_passes = n; if (layer->npasses == 0) { layer->disto = 0; layer->data_len = 0; continue; } if (cblk->ninclpasses == 0) { layer->data_len = cblk->passes[n - 1].rate; layer->data_start = cblk->data; layer->disto = cblk->passes[n - 1].disto; } else { layer->data_len = cblk->passes[n - 1].rate - cblk->passes[cblk->ninclpasses - 1].rate; layer->data_start = cblk->data + cblk->passes[cblk->ninclpasses - 1].rate; layer->disto = cblk->passes[n - 1].disto - cblk->passes[cblk->ninclpasses - 1].disto; } if (final) { cblk->ninclpasses = n; } } } } } } } static void makelayers(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile) { int precno, compno, reslevelno, bandno, cblkno, lev, passno, layno; int i; double min = DBL_MAX; double max = 0; double thresh; int tile_disto = 0; Jpeg2000CodingStyle *codsty = &s->codsty; for (compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = tile->comp + compno; for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){ for (bandno = 0; bandno < reslevel->nbands ; bandno++){ Jpeg2000Band *band = reslevel->band + bandno; Jpeg2000Prec *prec = band->prec + precno; for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){ Jpeg2000Cblk *cblk = prec->cblk + cblkno; for (passno = 0; passno < cblk->npasses; passno++) { Jpeg2000Pass *pass = &cblk->passes[passno]; int dr; double dd, drslope; tile_disto += pass->disto; if (passno == 0) { dr = (int32_t)pass->rate; dd = pass->disto; } else { dr = (int32_t)(pass->rate - cblk->passes[passno - 1].rate); dd = pass->disto - cblk->passes[passno - 1].disto; } if (dr <= 0) continue; drslope = dd / dr; if (drslope < min) min = drslope; if (drslope > max) max = drslope; } } } } } } for (layno = 0; layno < s->nlayers; layno++) { double lo = min; double hi = max; double stable_thresh = 0.0; double good_thresh = 0.0; if (!s->layer_rates[layno]) { good_thresh = -1.0; } else { for (i = 0; i < 128; i++) { uint8_t *stream_pos = s->buf; int ret; thresh = (lo + hi) / 2; makelayer(s, layno, thresh, tile, 0); ret = encode_packets(s, tile, (int)(tile - s->tile), layno + 1); memset(stream_pos, 0, s->buf - stream_pos); if ((s->buf - stream_pos > ceil(tile->layer_rates[layno])) || ret < 0) { lo = thresh; s->buf = stream_pos; continue; } hi = thresh; stable_thresh = thresh; s->buf = stream_pos; } } if (good_thresh >= 0.0) good_thresh = stable_thresh == 0.0 ? thresh : stable_thresh; makelayer(s, layno, good_thresh, tile, 1); } } static int getcut(Jpeg2000Cblk *cblk, int64_t lambda, int dwt_norm) { int passno, res = 0; for (passno = 0; passno < cblk->npasses; passno++){ int dr; int64_t dd; dr = cblk->passes[passno].rate - (res ? cblk->passes[res-1].rate : 0); dd = cblk->passes[passno].disto - (res ? cblk->passes[res-1].disto : 0); if (((dd * dwt_norm) >> WMSEDEC_SHIFT) * dwt_norm >= dr * lambda) res = passno+1; } return res; } static void truncpasses(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile) { int precno, compno, reslevelno, bandno, cblkno, lev; Jpeg2000CodingStyle *codsty = &s->codsty; for (compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = tile->comp + compno; for (reslevelno = 0, lev = codsty->nreslevels-1; reslevelno < codsty->nreslevels; reslevelno++, lev--){ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++){ for (bandno = 0; bandno < reslevel->nbands ; bandno++){ int bandpos = bandno + (reslevelno > 0); Jpeg2000Band *band = reslevel->band + bandno; Jpeg2000Prec *prec = band->prec + precno; for (cblkno = 0; cblkno < prec->nb_codeblocks_height * prec->nb_codeblocks_width; cblkno++){ Jpeg2000Cblk *cblk = prec->cblk + cblkno; cblk->ninclpasses = getcut(cblk, s->lambda, (int64_t)dwt_norms[codsty->transform == FF_DWT53][bandpos][lev] * (int64_t)band->i_stepsize >> 15); cblk->layers[0].data_start = cblk->data; cblk->layers[0].cum_passes = cblk->ninclpasses; cblk->layers[0].npasses = cblk->ninclpasses; if (cblk->ninclpasses) cblk->layers[0].data_len = cblk->passes[cblk->ninclpasses - 1].rate; } } } } } } static int encode_tile(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno) { int compno, reslevelno, bandno, ret; Jpeg2000T1Context t1; Jpeg2000CodingStyle *codsty = &s->codsty; for (compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = s->tile[tileno].comp + compno; t1.stride = (1<log2_cblk_width) + 2; av_log(s->avctx, AV_LOG_DEBUG,"dwt\n"); if ((ret = ff_dwt_encode(&comp->dwt, comp->i_data)) < 0) return ret; av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n"); for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; for (bandno = 0; bandno < reslevel->nbands ; bandno++){ Jpeg2000Band *band = reslevel->band + bandno; Jpeg2000Prec *prec = band->prec; // we support only 1 precinct per band ATM in the encoder int cblkx, cblky, cblkno=0, xx0, x0, xx1, y0, yy0, yy1, bandpos; yy0 = bandno == 0 ? 0 : comp->reslevel[reslevelno-1].coord[1][1] - comp->reslevel[reslevelno-1].coord[1][0]; y0 = yy0; yy1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[1][0] + 1, band->log2_cblk_height) << band->log2_cblk_height, band->coord[1][1]) - band->coord[1][0] + yy0; if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1]) continue; bandpos = bandno + (reslevelno > 0); for (cblky = 0; cblky < prec->nb_codeblocks_height; cblky++){ if (reslevelno == 0 || bandno == 1) xx0 = 0; else xx0 = comp->reslevel[reslevelno-1].coord[0][1] - comp->reslevel[reslevelno-1].coord[0][0]; x0 = xx0; xx1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[0][0] + 1, band->log2_cblk_width) << band->log2_cblk_width, band->coord[0][1]) - band->coord[0][0] + xx0; for (cblkx = 0; cblkx < prec->nb_codeblocks_width; cblkx++, cblkno++){ int y, x; if (codsty->transform == FF_DWT53){ for (y = yy0; y < yy1; y++){ int *ptr = t1.data + (y-yy0)*t1.stride; for (x = xx0; x < xx1; x++){ *ptr++ = comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] * (1 << NMSEDEC_FRACBITS); } } } else{ for (y = yy0; y < yy1; y++){ int *ptr = t1.data + (y-yy0)*t1.stride; for (x = xx0; x < xx1; x++){ *ptr = (comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]); *ptr = (int64_t)*ptr * (int64_t)(16384 * 65536 / band->i_stepsize) >> 15 - NMSEDEC_FRACBITS; ptr++; } } } if (!prec->cblk[cblkno].data) prec->cblk[cblkno].data = av_malloc(1 + 8192); if (!prec->cblk[cblkno].passes) prec->cblk[cblkno].passes = av_malloc_array(JPEG2000_MAX_PASSES, sizeof (*prec->cblk[cblkno].passes)); if (!prec->cblk[cblkno].data || !prec->cblk[cblkno].passes) return AVERROR(ENOMEM); encode_cblk(s, &t1, prec->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0, bandpos, codsty->nreslevels - reslevelno - 1); xx0 = xx1; xx1 = FFMIN(xx1 + (1 << band->log2_cblk_width), band->coord[0][1] - band->coord[0][0] + x0); } yy0 = yy1; yy1 = FFMIN(yy1 + (1 << band->log2_cblk_height), band->coord[1][1] - band->coord[1][0] + y0); } } } av_log(s->avctx, AV_LOG_DEBUG, "after tier1\n"); } av_log(s->avctx, AV_LOG_DEBUG, "rate control\n"); if (s->compression_rate_enc) makelayers(s, tile); else truncpasses(s, tile); if ((ret = encode_packets(s, tile, tileno, s->nlayers)) < 0) return ret; av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n"); return 0; } static void cleanup(Jpeg2000EncoderContext *s) { int tileno, compno; Jpeg2000CodingStyle *codsty = &s->codsty; if (!s->tile) return; for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ if (s->tile[tileno].comp) { for (compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = s->tile[tileno].comp + compno; ff_jpeg2000_cleanup(comp, codsty); } av_freep(&s->tile[tileno].comp); } av_freep(&s->tile[tileno].layer_rates); } av_freep(&s->tile); } static void reinit(Jpeg2000EncoderContext *s) { int tileno, compno; for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ Jpeg2000Tile *tile = s->tile + tileno; for (compno = 0; compno < s->ncomponents; compno++) ff_jpeg2000_reinit(tile->comp + compno, &s->codsty); } } static void update_size(uint8_t *size, const uint8_t *end) { AV_WB32(size, end-size); } static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet) { int tileno, ret; Jpeg2000EncoderContext *s = avctx->priv_data; uint8_t *chunkstart, *jp2cstart, *jp2hstart; if ((ret = ff_alloc_packet(avctx, pkt, avctx->width*avctx->height*9 + AV_INPUT_BUFFER_MIN_SIZE)) < 0) return ret; // init: s->buf = s->buf_start = pkt->data; s->buf_end = pkt->data + pkt->size; s->picture = pict; s->lambda = s->picture->quality * LAMBDA_SCALE; if (avctx->pix_fmt == AV_PIX_FMT_BGR48 || avctx->pix_fmt == AV_PIX_FMT_GRAY16) copy_frame_16(s); else copy_frame_8(s); reinit(s); if (s->format == CODEC_JP2) { av_assert0(s->buf == pkt->data); bytestream_put_be32(&s->buf, 0x0000000C); bytestream_put_be32(&s->buf, 0x6A502020); bytestream_put_be32(&s->buf, 0x0D0A870A); chunkstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "ftyp", 4); bytestream_put_buffer(&s->buf, "jp2\040\040", 4); bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "jp2\040", 4); update_size(chunkstart, s->buf); jp2hstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "jp2h", 4); chunkstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "ihdr", 4); bytestream_put_be32(&s->buf, avctx->height); bytestream_put_be32(&s->buf, avctx->width); bytestream_put_be16(&s->buf, s->ncomponents); bytestream_put_byte(&s->buf, s->cbps[0]); bytestream_put_byte(&s->buf, 7); bytestream_put_byte(&s->buf, 0); bytestream_put_byte(&s->buf, 0); update_size(chunkstart, s->buf); chunkstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "colr", 4); bytestream_put_byte(&s->buf, 1); bytestream_put_byte(&s->buf, 0); bytestream_put_byte(&s->buf, 0); if (avctx->pix_fmt == AV_PIX_FMT_RGB24 || avctx->pix_fmt == AV_PIX_FMT_PAL8) { bytestream_put_be32(&s->buf, 16); } else if (s->ncomponents == 1) { bytestream_put_be32(&s->buf, 17); } else { bytestream_put_be32(&s->buf, 18); } update_size(chunkstart, s->buf); if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { int i; uint8_t *palette = pict->data[1]; chunkstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "pclr", 4); bytestream_put_be16(&s->buf, AVPALETTE_COUNT); bytestream_put_byte(&s->buf, 3); // colour channels bytestream_put_be24(&s->buf, 0x070707); //colour depths for (i = 0; i < AVPALETTE_COUNT; i++) { bytestream_put_be24(&s->buf, HAVE_BIGENDIAN ? AV_RB24(palette + 1) : AV_RL24(palette)); palette += 4; } update_size(chunkstart, s->buf); chunkstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "cmap", 4); for (i = 0; i < 3; i++) { bytestream_put_be16(&s->buf, 0); // component bytestream_put_byte(&s->buf, 1); // palette mapping bytestream_put_byte(&s->buf, i); // index } update_size(chunkstart, s->buf); } update_size(jp2hstart, s->buf); jp2cstart = s->buf; bytestream_put_be32(&s->buf, 0); bytestream_put_buffer(&s->buf, "jp2c", 4); } if (s->buf_end - s->buf < 2) return -1; bytestream_put_be16(&s->buf, JPEG2000_SOC); if ((ret = put_siz(s)) < 0) return ret; if ((ret = put_cod(s)) < 0) return ret; if ((ret = put_qcd(s, 0)) < 0) return ret; if ((ret = put_com(s, 0)) < 0) return ret; for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++){ uint8_t *psotptr; if (!(psotptr = put_sot(s, tileno))) return -1; if (s->buf_end - s->buf < 2) return -1; bytestream_put_be16(&s->buf, JPEG2000_SOD); if ((ret = encode_tile(s, s->tile + tileno, tileno)) < 0) return ret; bytestream_put_be32(&psotptr, s->buf - psotptr + 6); } if (s->buf_end - s->buf < 2) return -1; bytestream_put_be16(&s->buf, JPEG2000_EOC); if (s->format == CODEC_JP2) update_size(jp2cstart, s->buf); av_log(s->avctx, AV_LOG_DEBUG, "end\n"); pkt->size = s->buf - s->buf_start; pkt->flags |= AV_PKT_FLAG_KEY; *got_packet = 1; return 0; } static int parse_layer_rates(Jpeg2000EncoderContext *s) { int i; char *token; char *saveptr = NULL; int rate; int nlayers = 0; if (!s->lr_str) { s->nlayers = 1; s->layer_rates[0] = 0; s->compression_rate_enc = 0; return 0; } token = av_strtok(s->lr_str, ",", &saveptr); if (token && (rate = strtol(token, NULL, 10))) { s->layer_rates[0] = rate <= 1 ? 0:rate; nlayers++; } else { return AVERROR_INVALIDDATA; } while (1) { token = av_strtok(NULL, ",", &saveptr); if (!token) break; if (rate = strtol(token, NULL, 10)) { if (nlayers >= 100) { return AVERROR_INVALIDDATA; } s->layer_rates[nlayers] = rate <= 1 ? 0:rate; nlayers++; } else { return AVERROR_INVALIDDATA; } } for (i = 1; i < nlayers; i++) { if (s->layer_rates[i] >= s->layer_rates[i-1]) { return AVERROR_INVALIDDATA; } } s->nlayers = nlayers; s->compression_rate_enc = 1; return 0; } static av_cold int j2kenc_init(AVCodecContext *avctx) { static AVOnce init_static_once = AV_ONCE_INIT; int i, ret; Jpeg2000EncoderContext *s = avctx->priv_data; Jpeg2000CodingStyle *codsty = &s->codsty; Jpeg2000QuantStyle *qntsty = &s->qntsty; s->avctx = avctx; av_log(s->avctx, AV_LOG_DEBUG, "init\n"); if (parse_layer_rates(s)) { av_log(s, AV_LOG_WARNING, "Layer rates invalid. Encoding with 1 layer based on quality metric.\n"); s->nlayers = 1; s->layer_rates[0] = 0; s->compression_rate_enc = 0; } if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && (s->pred != FF_DWT97_INT || s->format != CODEC_JP2)) { av_log(s->avctx, AV_LOG_WARNING, "Forcing lossless jp2 for pal8\n"); s->pred = FF_DWT97_INT; s->format = CODEC_JP2; } // defaults: // TODO: implement setting non-standard precinct size memset(codsty->log2_prec_widths , 15, sizeof(codsty->log2_prec_widths )); memset(codsty->log2_prec_heights, 15, sizeof(codsty->log2_prec_heights)); codsty->nreslevels2decode= codsty->nreslevels = 7; codsty->nlayers = s->nlayers; codsty->log2_cblk_width = 4; codsty->log2_cblk_height = 4; codsty->transform = s->pred ? FF_DWT53 : FF_DWT97_INT; qntsty->nguardbits = 1; if ((s->tile_width & (s->tile_width -1)) || (s->tile_height & (s->tile_height-1))) { av_log(avctx, AV_LOG_WARNING, "Tile dimension not a power of 2\n"); } if (codsty->transform == FF_DWT53) qntsty->quantsty = JPEG2000_QSTY_NONE; else qntsty->quantsty = JPEG2000_QSTY_SE; s->width = avctx->width; s->height = avctx->height; for (i = 0; i < 3; i++) { if (avctx->pix_fmt == AV_PIX_FMT_GRAY16 || avctx->pix_fmt == AV_PIX_FMT_RGB48) s->cbps[i] = 16; else s->cbps[i] = 8; } if (avctx->pix_fmt == AV_PIX_FMT_RGB24 || avctx->pix_fmt == AV_PIX_FMT_RGB48){ s->ncomponents = 3; } else if (avctx->pix_fmt == AV_PIX_FMT_GRAY8 || avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY16){ s->ncomponents = 1; } else{ // planar YUV s->planar = 1; s->ncomponents = 3; ret = av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, s->chroma_shift, s->chroma_shift + 1); if (ret) return ret; } ff_thread_once(&init_static_once, init_luts); init_quantization(s); if ((ret=init_tiles(s)) < 0) return ret; av_log(s->avctx, AV_LOG_DEBUG, "after init\n"); return 0; } static int j2kenc_destroy(AVCodecContext *avctx) { Jpeg2000EncoderContext *s = avctx->priv_data; cleanup(s); return 0; } // taken from the libopenjpeg wraper so it matches #define OFFSET(x) offsetof(Jpeg2000EncoderContext, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "format", "Codec Format", OFFSET(format), AV_OPT_TYPE_INT, { .i64 = CODEC_JP2 }, CODEC_J2K, CODEC_JP2, VE, "format" }, { "j2k", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_J2K }, 0, 0, VE, "format" }, { "jp2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CODEC_JP2 }, 0, 0, VE, "format" }, { "tile_width", "Tile Width", OFFSET(tile_width), AV_OPT_TYPE_INT, { .i64 = 256 }, 1, 1<<30, VE, }, { "tile_height", "Tile Height", OFFSET(tile_height), AV_OPT_TYPE_INT, { .i64 = 256 }, 1, 1<<30, VE, }, { "pred", "DWT Type", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, "pred" }, { "dwt97int", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" }, { "dwt53", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" }, { "sop", "SOP marker", OFFSET(sop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, }, { "eph", "EPH marker", OFFSET(eph), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE, }, { "prog", "Progression Order", OFFSET(prog), AV_OPT_TYPE_INT, { .i64 = 0 }, JPEG2000_PGOD_LRCP, JPEG2000_PGOD_CPRL, VE, "prog" }, { "lrcp", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_LRCP }, 0, 0, VE, "prog" }, { "rlcp", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_RLCP }, 0, 0, VE, "prog" }, { "rpcl", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_RPCL }, 0, 0, VE, "prog" }, { "pcrl", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_PCRL }, 0, 0, VE, "prog" }, { "cprl", NULL, OFFSET(prog), AV_OPT_TYPE_CONST, { .i64 = JPEG2000_PGOD_CPRL }, 0, 0, VE, "prog" }, { "layer_rates", "Layer Rates", OFFSET(lr_str), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE }, { NULL } }; static const AVClass j2k_class = { .class_name = "jpeg 2000 encoder", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; const AVCodec ff_jpeg2000_encoder = { .name = "jpeg2000", .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_JPEG2000, .priv_data_size = sizeof(Jpeg2000EncoderContext), .init = j2kenc_init, .encode2 = encode_frame, .close = j2kenc_destroy, .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB24, AV_PIX_FMT_YUV444P, AV_PIX_FMT_GRAY8, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_PAL8, AV_PIX_FMT_RGB48, AV_PIX_FMT_GRAY16, AV_PIX_FMT_NONE }, .priv_class = &j2k_class, .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, };