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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * JPEG 2000 encoder and decoder common functions |
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| 3 | * Copyright (c) 2007 Kamil Nowosad |
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| 4 | * Copyright (c) 2013 Nicolas Bertrand |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | /** |
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| 24 | * @file |
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| 25 | * JPEG 2000 image encoder and decoder common functions |
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| 26 | */ |
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| 27 | |||
| 28 | #include "libavutil/avassert.h" |
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| 29 | #include "libavutil/common.h" |
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| 30 | #include "libavutil/mem.h" |
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| 31 | #include "avcodec.h" |
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| 32 | #include "jpeg2000.h" |
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| 33 | |||
| 34 | #define SHL(a, n) ((n) >= 0 ? (a) << (n) : (a) >> -(n)) |
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| 35 | |||
| 36 | /* tag tree routines */ |
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| 37 | |||
| 38 | /* allocate the memory for tag tree */ |
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| 39 | static int32_t tag_tree_size(uint16_t w, uint16_t h) |
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| 40 | { |
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| 41 | uint32_t res = 0; |
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| 42 | while (w > 1 || h > 1) { |
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| 43 | res += w * h; |
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| 44 | av_assert0(res + 1 < INT32_MAX); |
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| 45 | w = (w + 1) >> 1; |
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| 46 | h = (h + 1) >> 1; |
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| 47 | } |
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| 48 | return (int32_t)(res + 1); |
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| 49 | } |
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| 50 | |||
| 51 | static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h) |
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| 52 | { |
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| 53 | int pw = w, ph = h; |
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| 54 | Jpeg2000TgtNode *res, *t, *t2; |
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| 55 | int32_t tt_size; |
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| 56 | |||
| 57 | tt_size = tag_tree_size(w, h); |
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| 58 | |||
| 59 | t = res = av_mallocz_array(tt_size, sizeof(*t)); |
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| 60 | if (!res) |
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| 61 | return NULL; |
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| 62 | |||
| 63 | while (w > 1 || h > 1) { |
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| 64 | int i, j; |
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| 65 | pw = w; |
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| 66 | ph = h; |
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| 67 | |||
| 68 | w = (w + 1) >> 1; |
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| 69 | h = (h + 1) >> 1; |
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| 70 | t2 = t + pw * ph; |
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| 71 | |||
| 72 | for (i = 0; i < ph; i++) |
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| 73 | for (j = 0; j < pw; j++) |
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| 74 | t[i * pw + j].parent = &t2[(i >> 1) * w + (j >> 1)]; |
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| 75 | |||
| 76 | t = t2; |
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| 77 | } |
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| 78 | t[0].parent = NULL; |
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| 79 | return res; |
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| 80 | } |
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| 81 | |||
| 82 | static void tag_tree_zero(Jpeg2000TgtNode *t, int w, int h) |
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| 83 | { |
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| 84 | int i, siz = tag_tree_size(w, h); |
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| 85 | |||
| 86 | for (i = 0; i < siz; i++) { |
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| 87 | t[i].val = 0; |
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| 88 | t[i].vis = 0; |
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| 89 | } |
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| 90 | } |
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| 91 | |||
| 92 | uint8_t ff_jpeg2000_sigctxno_lut[256][4]; |
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| 93 | |||
| 94 | static int getsigctxno(int flag, int bandno) |
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| 95 | { |
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| 96 | int h, v, d; |
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| 97 | |||
| 98 | h = ((flag & JPEG2000_T1_SIG_E) ? 1 : 0) + |
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| 99 | ((flag & JPEG2000_T1_SIG_W) ? 1 : 0); |
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| 100 | v = ((flag & JPEG2000_T1_SIG_N) ? 1 : 0) + |
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| 101 | ((flag & JPEG2000_T1_SIG_S) ? 1 : 0); |
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| 102 | d = ((flag & JPEG2000_T1_SIG_NE) ? 1 : 0) + |
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| 103 | ((flag & JPEG2000_T1_SIG_NW) ? 1 : 0) + |
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| 104 | ((flag & JPEG2000_T1_SIG_SE) ? 1 : 0) + |
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| 105 | ((flag & JPEG2000_T1_SIG_SW) ? 1 : 0); |
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| 106 | |||
| 107 | if (bandno < 3) { |
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| 108 | if (bandno == 1) |
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| 109 | FFSWAP(int, h, v); |
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| 110 | if (h == 2) return 8; |
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| 111 | if (h == 1) { |
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| 112 | if (v >= 1) return 7; |
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| 113 | if (d >= 1) return 6; |
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| 114 | return 5; |
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| 115 | } |
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| 116 | if (v == 2) return 4; |
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| 117 | if (v == 1) return 3; |
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| 118 | if (d >= 2) return 2; |
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| 119 | if (d == 1) return 1; |
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| 120 | } else { |
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| 121 | if (d >= 3) return 8; |
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| 122 | if (d == 2) { |
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| 123 | if (h+v >= 1) return 7; |
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| 124 | return 6; |
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| 125 | } |
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| 126 | if (d == 1) { |
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| 127 | if (h+v >= 2) return 5; |
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| 128 | if (h+v == 1) return 4; |
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| 129 | return 3; |
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| 130 | } |
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| 131 | if (h+v >= 2) return 2; |
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| 132 | if (h+v == 1) return 1; |
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| 133 | } |
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| 134 | return 0; |
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| 135 | } |
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| 136 | |||
| 137 | uint8_t ff_jpeg2000_sgnctxno_lut[16][16], ff_jpeg2000_xorbit_lut[16][16]; |
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| 138 | |||
| 139 | static const int contribtab[3][3] = { { 0, -1, 1 }, { -1, -1, 0 }, { 1, 0, 1 } }; |
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| 140 | static const int ctxlbltab[3][3] = { { 13, 12, 11 }, { 10, 9, 10 }, { 11, 12, 13 } }; |
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| 141 | static const int xorbittab[3][3] = { { 1, 1, 1 }, { 1, 0, 0 }, { 0, 0, 0 } }; |
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| 142 | |||
| 143 | static int getsgnctxno(int flag, uint8_t *xorbit) |
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| 144 | { |
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| 145 | int vcontrib, hcontrib; |
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| 146 | |||
| 147 | hcontrib = contribtab[flag & JPEG2000_T1_SIG_E ? flag & JPEG2000_T1_SGN_E ? 1 : 2 : 0] |
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| 148 | [flag & JPEG2000_T1_SIG_W ? flag & JPEG2000_T1_SGN_W ? 1 : 2 : 0] + 1; |
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| 149 | vcontrib = contribtab[flag & JPEG2000_T1_SIG_S ? flag & JPEG2000_T1_SGN_S ? 1 : 2 : 0] |
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| 150 | [flag & JPEG2000_T1_SIG_N ? flag & JPEG2000_T1_SGN_N ? 1 : 2 : 0] + 1; |
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| 151 | *xorbit = xorbittab[hcontrib][vcontrib]; |
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| 152 | |||
| 153 | return ctxlbltab[hcontrib][vcontrib]; |
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| 154 | } |
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| 155 | |||
| 156 | void ff_jpeg2000_init_tier1_luts(void) |
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| 157 | { |
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| 158 | int i, j; |
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| 159 | for (i = 0; i < 256; i++) |
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| 160 | for (j = 0; j < 4; j++) |
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| 161 | ff_jpeg2000_sigctxno_lut[i][j] = getsigctxno(i, j); |
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| 162 | for (i = 0; i < 16; i++) |
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| 163 | for (j = 0; j < 16; j++) |
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| 164 | ff_jpeg2000_sgnctxno_lut[i][j] = |
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| 165 | getsgnctxno(i + (j << 8), &ff_jpeg2000_xorbit_lut[i][j]); |
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| 166 | } |
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| 167 | |||
| 168 | void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1, int x, int y, |
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| 169 | int negative) |
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| 170 | { |
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| 171 | x++; |
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| 172 | y++; |
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| 173 | t1->flags[y][x] |= JPEG2000_T1_SIG; |
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| 174 | if (negative) { |
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| 175 | t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W | JPEG2000_T1_SGN_W; |
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| 176 | t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E | JPEG2000_T1_SGN_E; |
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| 177 | t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N | JPEG2000_T1_SGN_N; |
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| 178 | t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S | JPEG2000_T1_SGN_S; |
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| 179 | } else { |
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| 180 | t1->flags[y][x + 1] |= JPEG2000_T1_SIG_W; |
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| 181 | t1->flags[y][x - 1] |= JPEG2000_T1_SIG_E; |
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| 182 | t1->flags[y + 1][x] |= JPEG2000_T1_SIG_N; |
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| 183 | t1->flags[y - 1][x] |= JPEG2000_T1_SIG_S; |
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| 184 | } |
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| 185 | t1->flags[y + 1][x + 1] |= JPEG2000_T1_SIG_NW; |
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| 186 | t1->flags[y + 1][x - 1] |= JPEG2000_T1_SIG_NE; |
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| 187 | t1->flags[y - 1][x + 1] |= JPEG2000_T1_SIG_SW; |
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| 188 | t1->flags[y - 1][x - 1] |= JPEG2000_T1_SIG_SE; |
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| 189 | } |
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| 190 | |||
| 191 | static const uint8_t lut_gain[2][4] = { { 0, 0, 0, 0 }, { 0, 1, 1, 2 } }; |
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| 192 | |||
| 193 | int ff_jpeg2000_init_component(Jpeg2000Component *comp, |
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| 194 | Jpeg2000CodingStyle *codsty, |
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| 195 | Jpeg2000QuantStyle *qntsty, |
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| 196 | int cbps, int dx, int dy, |
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| 197 | AVCodecContext *avctx) |
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| 198 | { |
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| 199 | uint8_t log2_band_prec_width, log2_band_prec_height; |
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| 200 | int reslevelno, bandno, gbandno = 0, ret, i, j; |
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| 201 | uint32_t csize; |
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| 202 | |||
| 203 | if (codsty->nreslevels2decode <= 0) { |
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| 204 | av_log(avctx, AV_LOG_ERROR, "nreslevels2decode %d invalid or uninitialized\n", codsty->nreslevels2decode); |
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| 205 | return AVERROR_INVALIDDATA; |
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| 206 | } |
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| 207 | |||
| 208 | if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord, |
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| 209 | codsty->nreslevels2decode - 1, |
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| 210 | codsty->transform)) |
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| 211 | return ret; |
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| 212 | // component size comp->coord is uint16_t so ir cannot overflow |
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| 213 | csize = (comp->coord[0][1] - comp->coord[0][0]) * |
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| 214 | (comp->coord[1][1] - comp->coord[1][0]); |
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| 215 | |||
| 216 | if (codsty->transform == FF_DWT97) { |
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| 217 | comp->i_data = NULL; |
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| 218 | comp->f_data = av_mallocz_array(csize, sizeof(*comp->f_data)); |
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| 219 | if (!comp->f_data) |
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| 220 | return AVERROR(ENOMEM); |
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| 221 | } else { |
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| 222 | comp->f_data = NULL; |
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| 223 | comp->i_data = av_mallocz_array(csize, sizeof(*comp->i_data)); |
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| 224 | if (!comp->i_data) |
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| 225 | return AVERROR(ENOMEM); |
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| 226 | } |
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| 227 | comp->reslevel = av_calloc(codsty->nreslevels, sizeof(*comp->reslevel)); |
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| 228 | if (!comp->reslevel) |
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| 229 | return AVERROR(ENOMEM); |
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| 230 | /* LOOP on resolution levels */ |
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| 231 | for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { |
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| 232 | int declvl = codsty->nreslevels - reslevelno; // N_L -r see ISO/IEC 15444-1:2002 B.5 |
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| 233 | Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; |
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| 234 | |||
| 235 | /* Compute borders for each resolution level. |
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| 236 | * Computation of trx_0, trx_1, try_0 and try_1. |
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| 237 | * see ISO/IEC 15444-1:2002 eq. B.5 and B-14 */ |
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| 238 | for (i = 0; i < 2; i++) |
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| 239 | for (j = 0; j < 2; j++) |
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| 240 | reslevel->coord[i][j] = |
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| 241 | ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], declvl - 1); |
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| 242 | // update precincts size: 2^n value |
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| 243 | reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno]; |
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| 244 | reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno]; |
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| 245 | |||
| 246 | /* Number of bands for each resolution level */ |
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| 247 | if (reslevelno == 0) |
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| 248 | reslevel->nbands = 1; |
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| 249 | else |
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| 250 | reslevel->nbands = 3; |
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| 251 | |||
| 252 | /* Number of precincts wich span the tile for resolution level reslevelno |
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| 253 | * see B.6 in ISO/IEC 15444-1:2002 eq. B-16 |
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| 254 | * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| - (trx_0 / 2 ^ log2_prec_width) |
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| 255 | * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| - (try_0 / 2 ^ log2_prec_width) |
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| 256 | * for Dcinema profiles in JPEG 2000 |
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| 257 | * num_precincts_x = |- trx_1 / 2 ^ log2_prec_width) -| |
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| 258 | * num_precincts_y = |- try_1 / 2 ^ log2_prec_width) -| */ |
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| 259 | if (reslevel->coord[0][1] == reslevel->coord[0][0]) |
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| 260 | reslevel->num_precincts_x = 0; |
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| 261 | else |
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| 262 | reslevel->num_precincts_x = |
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| 263 | ff_jpeg2000_ceildivpow2(reslevel->coord[0][1], |
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| 264 | reslevel->log2_prec_width) - |
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| 265 | (reslevel->coord[0][0] >> reslevel->log2_prec_width); |
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| 266 | |||
| 267 | if (reslevel->coord[1][1] == reslevel->coord[1][0]) |
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| 268 | reslevel->num_precincts_y = 0; |
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| 269 | else |
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| 270 | reslevel->num_precincts_y = |
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| 271 | ff_jpeg2000_ceildivpow2(reslevel->coord[1][1], |
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| 272 | reslevel->log2_prec_height) - |
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| 273 | (reslevel->coord[1][0] >> reslevel->log2_prec_height); |
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| 274 | |||
| 275 | reslevel->band = av_calloc(reslevel->nbands, sizeof(*reslevel->band)); |
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| 276 | if (!reslevel->band) |
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| 277 | return AVERROR(ENOMEM); |
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| 278 | |||
| 279 | for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) { |
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| 280 | Jpeg2000Band *band = reslevel->band + bandno; |
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| 281 | int cblkno, precno; |
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| 282 | int nb_precincts; |
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| 283 | |||
| 284 | /* TODO: Implementation of quantization step not finished, |
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| 285 | * see ISO/IEC 15444-1:2002 E.1 and A.6.4. */ |
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| 286 | switch (qntsty->quantsty) { |
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| 287 | uint8_t gain; |
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| 288 | int numbps; |
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| 289 | case JPEG2000_QSTY_NONE: |
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| 290 | /* TODO: to verify. No quantization in this case */ |
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| 291 | band->f_stepsize = 1; |
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| 292 | break; |
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| 293 | case JPEG2000_QSTY_SI: |
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| 294 | /*TODO: Compute formula to implement. */ |
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| 295 | numbps = cbps + |
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| 296 | lut_gain[codsty->transform == FF_DWT53][bandno + (reslevelno > 0)]; |
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| 297 | band->f_stepsize = SHL(2048 + qntsty->mant[gbandno], |
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| 298 | 2 + numbps - qntsty->expn[gbandno]); |
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| 299 | break; |
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| 300 | case JPEG2000_QSTY_SE: |
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| 301 | /* Exponent quantization step. |
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| 302 | * Formula: |
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| 303 | * delta_b = 2 ^ (R_b - expn_b) * (1 + (mant_b / 2 ^ 11)) |
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| 304 | * R_b = R_I + log2 (gain_b ) |
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| 305 | * see ISO/IEC 15444-1:2002 E.1.1 eqn. E-3 and E-4 */ |
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| 306 | /* TODO/WARN: value of log2 (gain_b ) not taken into account |
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| 307 | * but it works (compared to OpenJPEG). Why? |
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| 308 | * Further investigation needed. */ |
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| 309 | gain = cbps; |
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| 310 | band->f_stepsize = pow(2.0, gain - qntsty->expn[gbandno]); |
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| 311 | band->f_stepsize *= qntsty->mant[gbandno] / 2048.0 + 1.0; |
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| 312 | break; |
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| 313 | default: |
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| 314 | band->f_stepsize = 0; |
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| 315 | av_log(avctx, AV_LOG_ERROR, "Unknown quantization format\n"); |
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| 316 | break; |
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| 317 | } |
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| 318 | /* FIXME: In openjepg code stespize = stepsize * 0.5. Why? |
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| 319 | * If not set output of entropic decoder is not correct. */ |
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| 320 | if (!av_codec_is_encoder(avctx->codec)) |
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| 321 | band->f_stepsize *= 0.5; |
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| 322 | |||
| 323 | band->i_stepsize = band->f_stepsize * (1 << 15); |
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| 324 | |||
| 325 | /* computation of tbx_0, tbx_1, tby_0, tby_1 |
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| 326 | * see ISO/IEC 15444-1:2002 B.5 eq. B-15 and tbl B.1 |
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| 327 | * codeblock width and height is computed for |
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| 328 | * DCI JPEG 2000 codeblock_width = codeblock_width = 32 = 2 ^ 5 */ |
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| 329 | if (reslevelno == 0) { |
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| 330 | /* for reslevelno = 0, only one band, x0_b = y0_b = 0 */ |
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| 331 | for (i = 0; i < 2; i++) |
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| 332 | for (j = 0; j < 2; j++) |
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| 333 | band->coord[i][j] = |
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| 334 | ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0], |
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| 335 | declvl - 1); |
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| 336 | log2_band_prec_width = reslevel->log2_prec_width; |
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| 337 | log2_band_prec_height = reslevel->log2_prec_height; |
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| 338 | /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ |
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| 339 | band->log2_cblk_width = FFMIN(codsty->log2_cblk_width, |
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| 340 | reslevel->log2_prec_width); |
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| 341 | band->log2_cblk_height = FFMIN(codsty->log2_cblk_height, |
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| 342 | reslevel->log2_prec_height); |
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| 343 | } else { |
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| 344 | /* 3 bands x0_b = 1 y0_b = 0; x0_b = 0 y0_b = 1; x0_b = y0_b = 1 */ |
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| 345 | /* x0_b and y0_b are computed with ((bandno + 1 >> i) & 1) */ |
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| 346 | for (i = 0; i < 2; i++) |
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| 347 | for (j = 0; j < 2; j++) |
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| 348 | /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */ |
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| 349 | band->coord[i][j] = |
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| 350 | ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0] - |
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| 351 | (((bandno + 1 >> i) & 1) << declvl - 1), |
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| 352 | declvl); |
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| 353 | /* TODO: Manage case of 3 band offsets here or |
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| 354 | * in coding/decoding function? */ |
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| 355 | |||
| 356 | /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ |
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| 357 | band->log2_cblk_width = FFMIN(codsty->log2_cblk_width, |
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| 358 | reslevel->log2_prec_width - 1); |
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| 359 | band->log2_cblk_height = FFMIN(codsty->log2_cblk_height, |
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| 360 | reslevel->log2_prec_height - 1); |
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| 361 | |||
| 362 | log2_band_prec_width = reslevel->log2_prec_width - 1; |
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| 363 | log2_band_prec_height = reslevel->log2_prec_height - 1; |
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| 364 | } |
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| 365 | |||
| 366 | for (j = 0; j < 2; j++) |
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| 367 | band->coord[0][j] = ff_jpeg2000_ceildiv(band->coord[0][j], dx); |
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| 368 | for (j = 0; j < 2; j++) |
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| 369 | band->coord[1][j] = ff_jpeg2000_ceildiv(band->coord[1][j], dy); |
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| 370 | |||
| 371 | band->prec = av_calloc(reslevel->num_precincts_x * |
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| 372 | (uint64_t)reslevel->num_precincts_y, |
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| 373 | sizeof(*band->prec)); |
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| 374 | if (!band->prec) |
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| 375 | return AVERROR(ENOMEM); |
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| 376 | |||
| 377 | nb_precincts = reslevel->num_precincts_x * reslevel->num_precincts_y; |
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| 378 | |||
| 379 | for (precno = 0; precno < nb_precincts; precno++) { |
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| 380 | Jpeg2000Prec *prec = band->prec + precno; |
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| 381 | |||
| 382 | /* TODO: Explain formula for JPEG200 DCINEMA. */ |
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| 383 | /* TODO: Verify with previous count of codeblocks per band */ |
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| 384 | |||
| 385 | /* Compute P_x0 */ |
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| 386 | prec->coord[0][0] = (precno % reslevel->num_precincts_x) * |
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| 387 | (1 << log2_band_prec_width); |
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| 388 | prec->coord[0][0] = FFMAX(prec->coord[0][0], band->coord[0][0]); |
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| 389 | |||
| 390 | /* Compute P_y0 */ |
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| 391 | prec->coord[1][0] = (precno / reslevel->num_precincts_x) * |
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| 392 | (1 << log2_band_prec_height); |
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| 393 | prec->coord[1][0] = FFMAX(prec->coord[1][0], band->coord[1][0]); |
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| 394 | |||
| 395 | /* Compute P_x1 */ |
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| 396 | prec->coord[0][1] = prec->coord[0][0] + |
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| 397 | (1 << log2_band_prec_width); |
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| 398 | prec->coord[0][1] = FFMIN(prec->coord[0][1], band->coord[0][1]); |
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| 399 | |||
| 400 | /* Compute P_y1 */ |
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| 401 | prec->coord[1][1] = prec->coord[1][0] + |
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| 402 | (1 << log2_band_prec_height); |
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| 403 | prec->coord[1][1] = FFMIN(prec->coord[1][1], band->coord[1][1]); |
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| 404 | |||
| 405 | prec->nb_codeblocks_width = |
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| 406 | ff_jpeg2000_ceildivpow2(prec->coord[0][1] - |
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| 407 | prec->coord[0][0], |
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| 408 | band->log2_cblk_width); |
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| 409 | prec->nb_codeblocks_height = |
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| 410 | ff_jpeg2000_ceildivpow2(prec->coord[1][1] - |
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| 411 | prec->coord[1][0], |
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| 412 | band->log2_cblk_height); |
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| 413 | |||
| 414 | /* Tag trees initialization */ |
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| 415 | prec->cblkincl = |
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| 416 | ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width, |
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| 417 | prec->nb_codeblocks_height); |
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| 418 | if (!prec->cblkincl) |
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| 419 | return AVERROR(ENOMEM); |
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| 420 | |||
| 421 | prec->zerobits = |
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| 422 | ff_jpeg2000_tag_tree_init(prec->nb_codeblocks_width, |
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| 423 | prec->nb_codeblocks_height); |
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| 424 | if (!prec->zerobits) |
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| 425 | return AVERROR(ENOMEM); |
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| 426 | |||
| 427 | prec->cblk = av_mallocz_array(prec->nb_codeblocks_width * |
||
| 428 | (uint64_t)prec->nb_codeblocks_height, |
||
| 429 | sizeof(*prec->cblk)); |
||
| 430 | if (!prec->cblk) |
||
| 431 | return AVERROR(ENOMEM); |
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| 432 | for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { |
||
| 433 | Jpeg2000Cblk *cblk = prec->cblk + cblkno; |
||
| 434 | uint16_t Cx0, Cy0; |
||
| 435 | |||
| 436 | /* Compute coordinates of codeblocks */ |
||
| 437 | /* Compute Cx0*/ |
||
| 438 | Cx0 = (prec->coord[0][0] >> band->log2_cblk_width) << band->log2_cblk_width; |
||
| 439 | Cx0 = Cx0 + ((cblkno % prec->nb_codeblocks_width) << band->log2_cblk_width); |
||
| 440 | cblk->coord[0][0] = FFMAX(Cx0, prec->coord[0][0]); |
||
| 441 | |||
| 442 | /* Compute Cy0*/ |
||
| 443 | Cy0 = (prec->coord[1][0] >> band->log2_cblk_height) << band->log2_cblk_height; |
||
| 444 | Cy0 = Cy0 + ((cblkno / prec->nb_codeblocks_width) << band->log2_cblk_height); |
||
| 445 | cblk->coord[1][0] = FFMAX(Cy0, prec->coord[1][0]); |
||
| 446 | |||
| 447 | /* Compute Cx1 */ |
||
| 448 | cblk->coord[0][1] = FFMIN(Cx0 + (1 << band->log2_cblk_width), |
||
| 449 | prec->coord[0][1]); |
||
| 450 | |||
| 451 | /* Compute Cy1 */ |
||
| 452 | cblk->coord[1][1] = FFMIN(Cy0 + (1 << band->log2_cblk_height), |
||
| 453 | prec->coord[1][1]); |
||
| 454 | /* Update code-blocks coordinates according sub-band position */ |
||
| 455 | if ((bandno + !!reslevelno) & 1) { |
||
| 456 | cblk->coord[0][0] += comp->reslevel[reslevelno-1].coord[0][1] - |
||
| 457 | comp->reslevel[reslevelno-1].coord[0][0]; |
||
| 458 | cblk->coord[0][1] += comp->reslevel[reslevelno-1].coord[0][1] - |
||
| 459 | comp->reslevel[reslevelno-1].coord[0][0]; |
||
| 460 | } |
||
| 461 | if ((bandno + !!reslevelno) & 2) { |
||
| 462 | cblk->coord[1][0] += comp->reslevel[reslevelno-1].coord[1][1] - |
||
| 463 | comp->reslevel[reslevelno-1].coord[1][0]; |
||
| 464 | cblk->coord[1][1] += comp->reslevel[reslevelno-1].coord[1][1] - |
||
| 465 | comp->reslevel[reslevelno-1].coord[1][0]; |
||
| 466 | } |
||
| 467 | |||
| 468 | cblk->zero = 0; |
||
| 469 | cblk->lblock = 3; |
||
| 470 | cblk->length = 0; |
||
| 471 | cblk->lengthinc = 0; |
||
| 472 | cblk->npasses = 0; |
||
| 473 | } |
||
| 474 | } |
||
| 475 | } |
||
| 476 | } |
||
| 477 | return 0; |
||
| 478 | } |
||
| 479 | |||
| 480 | void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) |
||
| 481 | { |
||
| 482 | int reslevelno, bandno, cblkno, precno; |
||
| 483 | for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { |
||
| 484 | Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; |
||
| 485 | for (bandno = 0; bandno < rlevel->nbands; bandno++) { |
||
| 486 | Jpeg2000Band *band = rlevel->band + bandno; |
||
| 487 | for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) { |
||
| 488 | Jpeg2000Prec *prec = band->prec + precno; |
||
| 489 | tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height); |
||
| 490 | tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height); |
||
| 491 | for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { |
||
| 492 | Jpeg2000Cblk *cblk = prec->cblk + cblkno; |
||
| 493 | cblk->length = 0; |
||
| 494 | cblk->lblock = 3; |
||
| 495 | } |
||
| 496 | } |
||
| 497 | } |
||
| 498 | } |
||
| 499 | } |
||
| 500 | |||
| 501 | void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) |
||
| 502 | { |
||
| 503 | int reslevelno, bandno, precno; |
||
| 504 | for (reslevelno = 0; |
||
| 505 | comp->reslevel && reslevelno < codsty->nreslevels; |
||
| 506 | reslevelno++) { |
||
| 507 | Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; |
||
| 508 | |||
| 509 | for (bandno = 0; bandno < reslevel->nbands; bandno++) { |
||
| 510 | if (reslevel->band) { |
||
| 511 | Jpeg2000Band *band = reslevel->band + bandno; |
||
| 512 | for (precno = 0; precno < reslevel->num_precincts_x * reslevel->num_precincts_y; precno++) { |
||
| 513 | if (band->prec) { |
||
| 514 | Jpeg2000Prec *prec = band->prec + precno; |
||
| 515 | av_freep(&prec->zerobits); |
||
| 516 | av_freep(&prec->cblkincl); |
||
| 517 | av_freep(&prec->cblk); |
||
| 518 | } |
||
| 519 | } |
||
| 520 | |||
| 521 | av_freep(&band->prec); |
||
| 522 | } |
||
| 523 | } |
||
| 524 | av_freep(&reslevel->band); |
||
| 525 | } |
||
| 526 | |||
| 527 | ff_dwt_destroy(&comp->dwt); |
||
| 528 | av_freep(&comp->reslevel); |
||
| 529 | av_freep(&comp->i_data); |
||
| 530 | av_freep(&comp->f_data); |
||
| 531 | } |