| /* | |
| * JPEG 2000 encoder and decoder common functions | |
| * Copyright (c) 2007 Kamil Nowosad | |
| * Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com> | |
| * | |
| * 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 | |
| */ | |
| /** | |
| * @file | |
| * JPEG 2000 image encoder and decoder common functions | |
| */ | |
| #include "libavutil/attributes.h" | |
| #include "libavutil/avassert.h" | |
| #include "libavutil/common.h" | |
| #include "libavutil/imgutils.h" | |
| #include "libavutil/mem.h" | |
| #include "libavutil/thread.h" | |
| #include "avcodec.h" | |
| #include "jpeg2000.h" | |
| #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n)) | |
| /* tag tree routines */ | |
| static int32_t tag_tree_size(int w, int h) | |
| { | |
| int64_t res = 0; | |
| while (w > 1 || h > 1) { | |
| res += w * (int64_t)h; | |
| av_assert0(res + 1 < INT32_MAX); | |
| w = (w + 1) >> 1; | |
| h = (h + 1) >> 1; | |
| } | |
| return (int32_t)(res + 1); | |
| } | |
| /* allocate the memory for tag tree */ | |
| static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h) | |
| { | |
| int pw = w, ph = h; | |
| Jpeg2000TgtNode *res, *t, *t2; | |
| int32_t tt_size; | |
| tt_size = tag_tree_size(w, h); | |
| t = res = av_calloc(tt_size, sizeof(*t)); | |
| if (!res) | |
| return NULL; | |
| while (w > 1 || h > 1) { | |
| int i, j; | |
| pw = w; | |
| ph = h; | |
| w = (w + 1) >> 1; | |
| h = (h + 1) >> 1; | |
| t2 = t + pw * ph; | |
| for (i = 0; i < ph; i++) | |
| for (j = 0; j < pw; j++) | |
| t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)]; | |
| t = t2; | |
| } | |
| t[0].parent = NULL; | |
| return res; | |
| } | |
| void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val) | |
| { | |
| int i, siz = tag_tree_size(w, h); | |
| for (i = 0; i < siz; i++) { | |
| t[i].val = val; | |
| t[i].temp_val = 0; | |
| t[i].vis = 0; | |
| } | |
| } | |
| uint8_t ff_jpeg2000_sigctxno_lut[256][4]; | |
| static int getsigctxno(int flag, int bandno) | |
| { | |
| int h, v, d; | |
| h = ((flag & JPEG2000_T1_SIG_E) ? 1 : 0) + | |
| ((flag & JPEG2000_T1_SIG_W) ? 1 : 0); | |
| v = ((flag & JPEG2000_T1_SIG_N) ? 1 : 0) + | |
| ((flag & JPEG2000_T1_SIG_S) ? 1 : 0); | |
| d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) + | |
| ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) + | |
| ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) + | |
| ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0); | |
| if (bandno < 3) { | |
| if (bandno == 1) | |
| FFSWAP(int, h, v); | |
| if (h == 2) return 8; | |
| if (h == 1) { | |
| if (v >= 1) return 7; | |
| if (d >= 1) return 6; | |
| return 5; | |
| } | |
| if (v == 2) return 4; | |
| if (v == 1) return 3; | |
| if (d >= 2) return 2; | |
| if (d == 1) return 1; | |
| } else { | |
| if (d >= 3) return 8; | |
| if (d == 2) { | |
| if (h+v >= 1) return 7; | |
| return 6; | |
| } | |
| if (d == 1) { | |
| if (h+v >= 2) return 5; | |
| if (h+v == 1) return 4; | |
| return 3; | |
| } | |
| if (h+v >= 2) return 2; | |
| if (h+v == 1) return 1; | |
| } | |
| return 0; | |
| } | |
| uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16]; | |
| static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } }; | |
| static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } }; | |
| static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } }; | |
| static int getsgnctxno(int flag, uint8_t *xorbit) | |
| { | |
| int vcontrib, hcontrib; | |
| hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0] | |
| [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1; | |
| vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0] | |
| [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1; | |
| *xorbit = xorbittab[hcontrib][vcontrib]; | |
| return ctxlbltab[hcontrib][vcontrib]; | |
| } | |
| static void av_cold jpeg2000_init_tier1_luts(void) | |
| { | |
| int i, j; | |
| for (i = 0; i < 256; i++) | |
| for (j = 0; j < 4; j++) | |
| ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j); | |
| for (i = 0; i < 16; i++) | |
| for (j = 0; j < 16; j++) | |
| ff_jpeg2000_sgnctxno_lut[i][j] = | |
| getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]); | |
| } | |
| void av_cold ff_jpeg2000_init_tier1_luts(void) | |
| { | |
| static AVOnce init_static_once = AV_ONCE_INIT; | |
| ff_thread_once(&init_static_once, jpeg2000_init_tier1_luts); | |
| } | |
| void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, | |
| int negative) | |
| { | |
| x++; | |
| y++; | |
| t1->flags[(y) * t1->stride + x] |= JPEG2000_T1_SIG; | |
| if (negative) { | |
| t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W; | |
| t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E; | |
| t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N; | |
| t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S; | |
| } else { | |
| t1->flags[(y) * t1->stride + x + 1] |= JPEG2000_T1_SIG_W; | |
| t1->flags[(y) * t1->stride + x - 1] |= JPEG2000_T1_SIG_E; | |
| t1->flags[(y + 1) * t1->stride + x] |= JPEG2000_T1_SIG_N; | |
| t1->flags[(y - 1) * t1->stride + x] |= JPEG2000_T1_SIG_S; | |
| } | |
| t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_NW; | |
| t1->flags[(y + 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_NE; | |
| t1->flags[(y - 1) * t1->stride + x + 1] |= JPEG2000_T1_SIG_SW; | |
| t1->flags[(y - 1) * t1->stride + x - 1] |= JPEG2000_T1_SIG_SE; | |
| } | |
| // static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } }; (unused) | |
| /** | |
| * 2^(x) for integer x in the range -126..128. | |
| * @return correctly rounded float | |
| */ | |
| static av_always_inline float exp2fi(int x) | |
| { | |
| av_assert2(-126 <= x && x <= 128); | |
| /* Normal range */ | |
| return av_int2float((x+127) << 23); | |
| } | |
| static void init_band_stepsize(AVCodecContext *avctx, | |
| Jpeg2000Band *band, | |
| Jpeg2000CodingStyle *codsty, | |
| Jpeg2000QuantStyle *qntsty, | |
| int bandno, int gbandno, int reslevelno, | |
| int cbps) | |
| { | |
| /* TODO: Implementation of quantization step not finished, | |
| * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */ | |
| switch (qntsty->quantsty) { | |
| uint8_t gain; | |
| case JPEG2000_QSTY_NONE: | |
| /* TODO: to verify. No quantization in this case */ | |
| band->f_stepsize = 1; | |
| break; | |
| case JPEG2000_QSTY_SI: | |
| /*TODO: Compute formula to implement. */ | |
| // numbps = cbps + | |
| // lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)]; | |
| // band->f_stepsize = SHL(2048 + qntsty->mant[gbandno], | |
| // 2 + numbps - qntsty->expn[gbandno]); | |
| // break; | |
| case JPEG2000_QSTY_SE: | |
| /* Exponent quantization step. | |
| * Formula: | |
| * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11)) | |
| * R_b = R_I + log2 (gain_b ) | |
| * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */ | |
| gain = cbps; | |
| band->f_stepsize = exp2fi(gain - qntsty->expn[gbandno]); | |
| band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0; | |
| break; | |
| default: | |
| band->f_stepsize = 0; | |
| av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n"); | |
| break; | |
| } | |
| if (codsty->transform != FF_DWT53) { | |
| int lband = 0; | |
| switch (bandno + (reslevelno > 0)) { | |
| case 1: | |
| case 2: | |
| band->f_stepsize *= F_LFTG_X * 2; | |
| lband = 1; | |
| break; | |
| case 3: | |
| band->f_stepsize *= F_LFTG_X * F_LFTG_X * 4; | |
| break; | |
| } | |
| if (codsty->transform == FF_DWT97) { | |
| band->f_stepsize *= pow(F_LFTG_K, 2*(codsty->nreslevels2decode - reslevelno) + lband - 2); | |
| } | |
| } | |
| if (band->f_stepsize > (INT_MAX >> 15)) { | |
| band->f_stepsize = 0; | |
| av_log(avctx, AV_LOG_ERROR, "stepsize out of range\n"); | |
| } | |
| band->i_stepsize = band->f_stepsize * (1 << 15); | |
| /* FIXME: In OpenJPEG code stepsize = stepsize * 0.5. Why? | |
| * If not set output of entropic decoder is not correct. */ | |
| if (!av_codec_is_encoder(avctx->codec)) | |
| band->f_stepsize *= 0.5; | |
| } | |
| static int init_prec(AVCodecContext *avctx, | |
| Jpeg2000Band *band, | |
| Jpeg2000ResLevel *reslevel, | |
| Jpeg2000Component *comp, | |
| Jpeg2000CodingStyle *codsty, | |
| int precno, int bandno, int reslevelno, | |
| int log2_band_prec_width, | |
| int log2_band_prec_height) | |
| { | |
| Jpeg2000Prec *prec = band->prec + precno; | |
| int nb_codeblocks, cblkno; | |
| prec->decoded_layers = 0; | |
| /* TODO: Explain formula for JPEG200 DCINEMA. */ | |
| /* TODO: Verify with previous count of codeblocks per band */ | |
| /* Compute P_x0 */ | |
| prec->coord[0][0] = ((reslevel->coord[0][0] >> reslevel->log2_prec_width) + precno % reslevel->num_precincts_x) * | |
| (1 << log2_band_prec_width); | |
| /* Compute P_y0 */ | |
| prec->coord[1][0] = ((reslevel->coord[1][0] >> reslevel->log2_prec_height) + precno / reslevel->num_precincts_x) * | |
| (1 << log2_band_prec_height); | |
| /* Compute P_x1 */ | |
| prec->coord[0][1] = prec->coord[0][0] + | |
| (1 << log2_band_prec_width); | |
| prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]); | |
| prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]); | |
| /* Compute P_y1 */ | |
| prec->coord[1][1] = prec->coord[1][0] + | |
| (1 << log2_band_prec_height); | |
| prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]); | |
| prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]); | |
| prec->nb_codeblocks_width = | |
| ff_jpeg2000_ceildivpow2(prec->coord[0][1], | |
| band->log2_cblk_width) | |
| - (prec->coord[0][0] >> band->log2_cblk_width); | |
| prec->nb_codeblocks_height = | |
| ff_jpeg2000_ceildivpow2(prec->coord[1][1], | |
| band->log2_cblk_height) | |
| - (prec->coord[1][0] >> band->log2_cblk_height); | |
| /* Tag trees initialization */ | |
| prec->cblkincl = | |
| ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width, | |
| prec->nb_codeblocks_height); | |
| if (!prec->cblkincl) | |
| return AVERROR(ENOMEM); | |
| prec->zerobits = | |
| ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width, | |
| prec->nb_codeblocks_height); | |
| if (!prec->zerobits) | |
| return AVERROR(ENOMEM); | |
| if (prec->nb_codeblocks_width * (uint64_t)prec->nb_codeblocks_height > INT_MAX) { | |
| prec->cblk = NULL; | |
| return AVERROR(ENOMEM); | |
| } | |
| nb_codeblocks = prec->nb_codeblocks_width * prec->nb_codeblocks_height; | |
| prec->cblk = av_calloc(nb_codeblocks, sizeof(*prec->cblk)); | |
| if (!prec->cblk) | |
| return AVERROR(ENOMEM); | |
| for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) { | |
| Jpeg2000Cblk *cblk = prec->cblk + cblkno; | |
| int Cx0, Cy0; | |
| /* Compute coordinates of codeblocks */ | |
| /* Compute Cx0*/ | |
| Cx0 = ((prec->coord[0][0]) >> band->log2_cblk_width) << band->log2_cblk_width; | |
| Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width); | |
| cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]); | |
| /* Compute Cy0*/ | |
| Cy0 = ((prec->coord[1][0]) >> band->log2_cblk_height) << band->log2_cblk_height; | |
| Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height); | |
| cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]); | |
| /* Compute Cx1 */ | |
| cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width), | |
| prec->coord[0][1]); | |
| /* Compute Cy1 */ | |
| cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height), | |
| prec->coord[1][1]); | |
| /* Update code-blocks coordinates according sub-band position */ | |
| if ((bandno + !!reslevelno) & 1) { | |
| cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] - | |
| comp->reslevel[reslevelno-1].coord[0][0]; | |
| cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] - | |
| comp->reslevel[reslevelno-1].coord[0][0]; | |
| } | |
| if ((bandno + !!reslevelno) & 2) { | |
| cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] - | |
| comp->reslevel[reslevelno-1].coord[1][0]; | |
| cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] - | |
| comp->reslevel[reslevelno-1].coord[1][0]; | |
| } | |
| cblk->lblock = 3; | |
| cblk->length = 0; | |
| cblk->npasses = 0; | |
| if (av_codec_is_encoder(avctx->codec)) { | |
| cblk->layers = av_calloc(codsty->nlayers, sizeof(*cblk->layers)); | |
| if (!cblk->layers) | |
| return AVERROR(ENOMEM); | |
| } | |
| } | |
| return 0; | |
| } | |
| static int init_band(AVCodecContext *avctx, | |
| Jpeg2000ResLevel *reslevel, | |
| Jpeg2000Component *comp, | |
| Jpeg2000CodingStyle *codsty, | |
| Jpeg2000QuantStyle *qntsty, | |
| int bandno, int gbandno, int reslevelno, | |
| const int cbps, int dx, int dy) | |
| { | |
| Jpeg2000Band *band = reslevel->band + bandno; | |
| uint8_t log2_band_prec_width, log2_band_prec_height; | |
| int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5 | |
| int precno; | |
| int nb_precincts; | |
| int i, j, ret; | |
| init_band_stepsize(avctx, band, codsty, qntsty, bandno, gbandno, reslevelno, cbps); | |
| /* computation of tbx_0, tbx_1, tby_0, tby_1 | |
| * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1 | |
| * codeblock width and height is computed for | |
| * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */ | |
| if (reslevelno == 0) { | |
| /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */ | |
| for (i = 0; i < 2; i++) | |
| for (j = 0; j < 2; j++) | |
| band->coord[i][j] = | |
| ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], | |
| declvl - 1); | |
| log2_band_prec_width = reslevel->log2_prec_width; | |
| log2_band_prec_height = reslevel->log2_prec_height; | |
| /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ | |
| band->log2_cblk_width = FFMIN(codsty->log2_cblk_width, | |
| reslevel->log2_prec_width); | |
| band->log2_cblk_height = FFMIN(codsty->log2_cblk_height, | |
| reslevel->log2_prec_height); | |
| } else { | |
| /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */ | |
| /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */ | |
| for (i = 0; i < 2; i++) | |
| for (j = 0; j < 2; j++) | |
| /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */ | |
| band->coord[i][j] = | |
| ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - | |
| (((bandno + 1 >> i) & 1LL) << declvl - 1), | |
| declvl); | |
| /* TODO: Manage case of 3 band offsets here or | |
| * in coding/decoding function? */ | |
| /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ | |
| band->log2_cblk_width = FFMIN(codsty->log2_cblk_width, | |
| reslevel->log2_prec_width - 1); | |
| band->log2_cblk_height = FFMIN(codsty->log2_cblk_height, | |
| reslevel->log2_prec_height - 1); | |
| log2_band_prec_width = reslevel->log2_prec_width - 1; | |
| log2_band_prec_height = reslevel->log2_prec_height - 1; | |
| } | |
| if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y > INT_MAX) { | |
| band->prec = NULL; | |
| return AVERROR(ENOMEM); | |
| } | |
| nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y; | |
| band->prec = av_calloc(nb_precincts, sizeof(*band->prec)); | |
| if (!band->prec) | |
| return AVERROR(ENOMEM); | |
| for (precno = 0; precno < nb_precincts; precno++) { | |
| ret = init_prec(avctx, band, reslevel, comp, codsty, | |
| precno, bandno, reslevelno, | |
| log2_band_prec_width, log2_band_prec_height); | |
| if (ret < 0) | |
| return ret; | |
| } | |
| return 0; | |
| } | |
| int ff_jpeg2000_init_component(Jpeg2000Component *comp, | |
| Jpeg2000CodingStyle *codsty, | |
| Jpeg2000QuantStyle *qntsty, | |
| const int cbps, int dx, int dy, | |
| AVCodecContext *avctx) | |
| { | |
| int reslevelno, bandno, gbandno = 0, ret, i, j; | |
| uint32_t csize; | |
| if (codsty->nreslevels2decode <= 0) { | |
| av_log(avctx, AV_LOG_ERROR, "nreslevels2decode %d invalid or uninitialized\n", codsty->nreslevels2decode); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord, | |
| codsty->nreslevels2decode - 1, | |
| codsty->transform)) | |
| return ret; | |
| if (av_image_check_size(comp->coord[0][1] - comp->coord[0][0], | |
| comp->coord[1][1] - comp->coord[1][0], 0, avctx)) | |
| return AVERROR_INVALIDDATA; | |
| csize = (comp->coord[0][1] - comp->coord[0][0]) * | |
| (comp->coord[1][1] - comp->coord[1][0]); | |
| if (comp->coord[0][1] - comp->coord[0][0] > 32768 || | |
| comp->coord[1][1] - comp->coord[1][0] > 32768) { | |
| av_log(avctx, AV_LOG_ERROR, "component size too large\n"); | |
| return AVERROR_PATCHWELCOME; | |
| } | |
| if (codsty->transform == FF_DWT97) { | |
| csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->f_data); | |
| comp->i_data = NULL; | |
| comp->f_data = av_calloc(csize, sizeof(*comp->f_data)); | |
| if (!comp->f_data) | |
| return AVERROR(ENOMEM); | |
| } else { | |
| csize += AV_INPUT_BUFFER_PADDING_SIZE / sizeof(*comp->i_data); | |
| comp->f_data = NULL; | |
| comp->i_data = av_calloc(csize, sizeof(*comp->i_data)); | |
| if (!comp->i_data) | |
| return AVERROR(ENOMEM); | |
| } | |
| comp->reslevel = av_calloc(codsty->nreslevels, sizeof(*comp->reslevel)); | |
| if (!comp->reslevel) | |
| return AVERROR(ENOMEM); | |
| /* LOOP on resolution levels */ | |
| for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { | |
| int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5 | |
| Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; | |
| /* Compute borders for each resolution level. | |
| * Computation of trx_0, trx_1, try_0 and try_1. | |
| * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */ | |
| for (i = 0; i < 2; i++) | |
| for (j = 0; j < 2; j++) | |
| reslevel->coord[i][j] = | |
| ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1); | |
| // update precincts size: 2^n value | |
| reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno]; | |
| reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno]; | |
| /* Number of bands for each resolution level */ | |
| if (reslevelno == 0) | |
| reslevel->nbands = 1; | |
| else | |
| reslevel->nbands = 3; | |
| /* Number of precincts which span the tile for resolution level reslevelno | |
| * see B.6 in ISO/IEC 15444-1:2002 eq. B-16 | |
| * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width) | |
| * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width) | |
| * for Dcinema profiles in JPEG 2000 | |
| * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| | |
| * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */ | |
| if (reslevel->coord[0][1] == reslevel->coord[0][0]) | |
| reslevel->num_precincts_x = 0; | |
| else | |
| reslevel->num_precincts_x = | |
| ff_jpeg2000_ceildivpow2(reslevel->coord[0][1], | |
| reslevel->log2_prec_width) - | |
| (reslevel->coord[0][0] >> reslevel->log2_prec_width); | |
| if (reslevel->coord[1][1] == reslevel->coord[1][0]) | |
| reslevel->num_precincts_y = 0; | |
| else | |
| reslevel->num_precincts_y = | |
| ff_jpeg2000_ceildivpow2(reslevel->coord[1][1], | |
| reslevel->log2_prec_height) - | |
| (reslevel->coord[1][0] >> reslevel->log2_prec_height); | |
| reslevel->band = av_calloc(reslevel->nbands, sizeof(*reslevel->band)); | |
| if (!reslevel->band) | |
| return AVERROR(ENOMEM); | |
| if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y * reslevel->nbands > avctx->max_pixels / sizeof(*reslevel->band->prec)) | |
| return AVERROR(ENOMEM); | |
| for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) { | |
| ret = init_band(avctx, reslevel, | |
| comp, codsty, qntsty, | |
| bandno, gbandno, reslevelno, | |
| cbps, dx, dy); | |
| if (ret < 0) | |
| return ret; | |
| } | |
| } | |
| return 0; | |
| } | |
| void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) | |
| { | |
| int reslevelno, bandno, cblkno, precno; | |
| for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { | |
| Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; | |
| for (bandno = 0; bandno < rlevel->nbands; bandno++) { | |
| Jpeg2000Band *band = rlevel->band + bandno; | |
| for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) { | |
| Jpeg2000Prec *prec = band->prec + precno; | |
| ff_tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 0); | |
| ff_tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height, 0); | |
| for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { | |
| Jpeg2000Cblk *cblk = prec->cblk + cblkno; | |
| cblk->length = 0; | |
| cblk->lblock = 3; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) | |
| { | |
| int reslevelno, bandno, precno; | |
| for (reslevelno = 0; | |
| comp->reslevel && reslevelno < codsty->nreslevels; | |
| reslevelno++) { | |
| Jpeg2000ResLevel *reslevel; | |
| if (!comp->reslevel) | |
| continue; | |
| reslevel = comp->reslevel + reslevelno; | |
| for (bandno = 0; bandno < reslevel->nbands; bandno++) { | |
| Jpeg2000Band *band; | |
| if (!reslevel->band) | |
| continue; | |
| band = reslevel->band + bandno; | |
| for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) { | |
| if (band->prec) { | |
| Jpeg2000Prec *prec = band->prec + precno; | |
| int nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width; | |
| av_freep(&prec->zerobits); | |
| av_freep(&prec->cblkincl); | |
| if (prec->cblk) { | |
| int cblkno; | |
| for (cblkno = 0; cblkno < nb_code_blocks; cblkno ++) { | |
| Jpeg2000Cblk *cblk = &prec->cblk[cblkno]; | |
| av_freep(&cblk->data); | |
| av_freep(&cblk->passes); | |
| av_freep(&cblk->lengthinc); | |
| av_freep(&cblk->data_start); | |
| av_freep(&cblk->layers); | |
| } | |
| av_freep(&prec->cblk); | |
| } | |
| } | |
| } | |
| av_freep(&band->prec); | |
| } | |
| av_freep(&reslevel->band); | |
| } | |
| ff_dwt_destroy(&comp->dwt); | |
| av_freep(&comp->reslevel); | |
| av_freep(&comp->i_data); | |
| av_freep(&comp->f_data); | |
| } |