| GCC Code Coverage Report | |||||||||||||||||||||
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| Line | Branch | Exec | Source |
1 |
/* |
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2 |
* LucasArts Smush video decoder |
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3 |
* Copyright (c) 2006 Cyril Zorin |
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4 |
* Copyright (c) 2011 Konstantin Shishkov |
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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 |
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23 |
#include "libavutil/avassert.h" |
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24 |
#include "libavutil/bswap.h" |
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25 |
#include "libavutil/imgutils.h" |
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26 |
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27 |
#include "avcodec.h" |
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28 |
#include "bytestream.h" |
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29 |
#include "copy_block.h" |
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30 |
#include "internal.h" |
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31 |
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32 |
#define NGLYPHS 256 |
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33 |
#define GLYPH_COORD_VECT_SIZE 16 |
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34 |
#define PALETTE_SIZE 256 |
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35 |
#define PALETTE_DELTA 768 |
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36 |
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37 |
static const int8_t glyph4_x[GLYPH_COORD_VECT_SIZE] = { |
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38 |
0, 1, 2, 3, 3, 3, 3, 2, 1, 0, 0, 0, 1, 2, 2, 1 |
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39 |
}; |
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40 |
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41 |
static const int8_t glyph4_y[GLYPH_COORD_VECT_SIZE] = { |
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42 |
0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 2, 1, 1, 1, 2, 2 |
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43 |
}; |
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44 |
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45 |
static const int8_t glyph8_x[GLYPH_COORD_VECT_SIZE] = { |
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46 |
0, 2, 5, 7, 7, 7, 7, 7, 7, 5, 2, 0, 0, 0, 0, 0 |
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47 |
}; |
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48 |
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49 |
static const int8_t glyph8_y[GLYPH_COORD_VECT_SIZE] = { |
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50 |
0, 0, 0, 0, 1, 3, 4, 6, 7, 7, 7, 7, 6, 4, 3, 1 |
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51 |
}; |
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52 |
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53 |
static const int8_t motion_vectors[256][2] = { |
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54 |
{ 0, 0 }, { -1, -43 }, { 6, -43 }, { -9, -42 }, { 13, -41 }, |
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55 |
{ -16, -40 }, { 19, -39 }, { -23, -36 }, { 26, -34 }, { -2, -33 }, |
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56 |
{ 4, -33 }, { -29, -32 }, { -9, -32 }, { 11, -31 }, { -16, -29 }, |
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57 |
{ 32, -29 }, { 18, -28 }, { -34, -26 }, { -22, -25 }, { -1, -25 }, |
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58 |
{ 3, -25 }, { -7, -24 }, { 8, -24 }, { 24, -23 }, { 36, -23 }, |
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59 |
{ -12, -22 }, { 13, -21 }, { -38, -20 }, { 0, -20 }, { -27, -19 }, |
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60 |
{ -4, -19 }, { 4, -19 }, { -17, -18 }, { -8, -17 }, { 8, -17 }, |
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61 |
{ 18, -17 }, { 28, -17 }, { 39, -17 }, { -12, -15 }, { 12, -15 }, |
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62 |
{ -21, -14 }, { -1, -14 }, { 1, -14 }, { -41, -13 }, { -5, -13 }, |
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63 |
{ 5, -13 }, { 21, -13 }, { -31, -12 }, { -15, -11 }, { -8, -11 }, |
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64 |
{ 8, -11 }, { 15, -11 }, { -2, -10 }, { 1, -10 }, { 31, -10 }, |
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65 |
{ -23, -9 }, { -11, -9 }, { -5, -9 }, { 4, -9 }, { 11, -9 }, |
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66 |
{ 42, -9 }, { 6, -8 }, { 24, -8 }, { -18, -7 }, { -7, -7 }, |
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67 |
{ -3, -7 }, { -1, -7 }, { 2, -7 }, { 18, -7 }, { -43, -6 }, |
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68 |
{ -13, -6 }, { -4, -6 }, { 4, -6 }, { 8, -6 }, { -33, -5 }, |
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69 |
{ -9, -5 }, { -2, -5 }, { 0, -5 }, { 2, -5 }, { 5, -5 }, |
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70 |
{ 13, -5 }, { -25, -4 }, { -6, -4 }, { -3, -4 }, { 3, -4 }, |
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71 |
{ 9, -4 }, { -19, -3 }, { -7, -3 }, { -4, -3 }, { -2, -3 }, |
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72 |
{ -1, -3 }, { 0, -3 }, { 1, -3 }, { 2, -3 }, { 4, -3 }, |
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73 |
{ 6, -3 }, { 33, -3 }, { -14, -2 }, { -10, -2 }, { -5, -2 }, |
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74 |
{ -3, -2 }, { -2, -2 }, { -1, -2 }, { 0, -2 }, { 1, -2 }, |
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75 |
{ 2, -2 }, { 3, -2 }, { 5, -2 }, { 7, -2 }, { 14, -2 }, |
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76 |
{ 19, -2 }, { 25, -2 }, { 43, -2 }, { -7, -1 }, { -3, -1 }, |
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77 |
{ -2, -1 }, { -1, -1 }, { 0, -1 }, { 1, -1 }, { 2, -1 }, |
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78 |
{ 3, -1 }, { 10, -1 }, { -5, 0 }, { -3, 0 }, { -2, 0 }, |
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79 |
{ -1, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 }, { 5, 0 }, |
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80 |
{ 7, 0 }, { -10, 1 }, { -7, 1 }, { -3, 1 }, { -2, 1 }, |
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81 |
{ -1, 1 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1 }, |
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82 |
{ -43, 2 }, { -25, 2 }, { -19, 2 }, { -14, 2 }, { -5, 2 }, |
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83 |
{ -3, 2 }, { -2, 2 }, { -1, 2 }, { 0, 2 }, { 1, 2 }, |
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84 |
{ 2, 2 }, { 3, 2 }, { 5, 2 }, { 7, 2 }, { 10, 2 }, |
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85 |
{ 14, 2 }, { -33, 3 }, { -6, 3 }, { -4, 3 }, { -2, 3 }, |
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86 |
{ -1, 3 }, { 0, 3 }, { 1, 3 }, { 2, 3 }, { 4, 3 }, |
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87 |
{ 19, 3 }, { -9, 4 }, { -3, 4 }, { 3, 4 }, { 7, 4 }, |
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88 |
{ 25, 4 }, { -13, 5 }, { -5, 5 }, { -2, 5 }, { 0, 5 }, |
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89 |
{ 2, 5 }, { 5, 5 }, { 9, 5 }, { 33, 5 }, { -8, 6 }, |
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90 |
{ -4, 6 }, { 4, 6 }, { 13, 6 }, { 43, 6 }, { -18, 7 }, |
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91 |
{ -2, 7 }, { 0, 7 }, { 2, 7 }, { 7, 7 }, { 18, 7 }, |
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92 |
{ -24, 8 }, { -6, 8 }, { -42, 9 }, { -11, 9 }, { -4, 9 }, |
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93 |
{ 5, 9 }, { 11, 9 }, { 23, 9 }, { -31, 10 }, { -1, 10 }, |
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94 |
{ 2, 10 }, { -15, 11 }, { -8, 11 }, { 8, 11 }, { 15, 11 }, |
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95 |
{ 31, 12 }, { -21, 13 }, { -5, 13 }, { 5, 13 }, { 41, 13 }, |
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96 |
{ -1, 14 }, { 1, 14 }, { 21, 14 }, { -12, 15 }, { 12, 15 }, |
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97 |
{ -39, 17 }, { -28, 17 }, { -18, 17 }, { -8, 17 }, { 8, 17 }, |
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98 |
{ 17, 18 }, { -4, 19 }, { 0, 19 }, { 4, 19 }, { 27, 19 }, |
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99 |
{ 38, 20 }, { -13, 21 }, { 12, 22 }, { -36, 23 }, { -24, 23 }, |
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100 |
{ -8, 24 }, { 7, 24 }, { -3, 25 }, { 1, 25 }, { 22, 25 }, |
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101 |
{ 34, 26 }, { -18, 28 }, { -32, 29 }, { 16, 29 }, { -11, 31 }, |
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102 |
{ 9, 32 }, { 29, 32 }, { -4, 33 }, { 2, 33 }, { -26, 34 }, |
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103 |
{ 23, 36 }, { -19, 39 }, { 16, 40 }, { -13, 41 }, { 9, 42 }, |
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104 |
{ -6, 43 }, { 1, 43 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, |
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105 |
}; |
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106 |
|||
107 |
static const int8_t c37_mv[] = { |
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108 |
0, 0, 1, 0, 2, 0, 3, 0, 5, 0, |
||
109 |
8, 0, 13, 0, 21, 0, -1, 0, -2, 0, |
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110 |
-3, 0, -5, 0, -8, 0, -13, 0, -17, 0, |
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111 |
-21, 0, 0, 1, 1, 1, 2, 1, 3, 1, |
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112 |
5, 1, 8, 1, 13, 1, 21, 1, -1, 1, |
||
113 |
-2, 1, -3, 1, -5, 1, -8, 1, -13, 1, |
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114 |
-17, 1, -21, 1, 0, 2, 1, 2, 2, 2, |
||
115 |
3, 2, 5, 2, 8, 2, 13, 2, 21, 2, |
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116 |
-1, 2, -2, 2, -3, 2, -5, 2, -8, 2, |
||
117 |
-13, 2, -17, 2, -21, 2, 0, 3, 1, 3, |
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118 |
2, 3, 3, 3, 5, 3, 8, 3, 13, 3, |
||
119 |
21, 3, -1, 3, -2, 3, -3, 3, -5, 3, |
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120 |
-8, 3, -13, 3, -17, 3, -21, 3, 0, 5, |
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121 |
1, 5, 2, 5, 3, 5, 5, 5, 8, 5, |
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122 |
13, 5, 21, 5, -1, 5, -2, 5, -3, 5, |
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123 |
-5, 5, -8, 5, -13, 5, -17, 5, -21, 5, |
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124 |
0, 8, 1, 8, 2, 8, 3, 8, 5, 8, |
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125 |
8, 8, 13, 8, 21, 8, -1, 8, -2, 8, |
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126 |
-3, 8, -5, 8, -8, 8, -13, 8, -17, 8, |
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127 |
-21, 8, 0, 13, 1, 13, 2, 13, 3, 13, |
||
128 |
5, 13, 8, 13, 13, 13, 21, 13, -1, 13, |
||
129 |
-2, 13, -3, 13, -5, 13, -8, 13, -13, 13, |
||
130 |
-17, 13, -21, 13, 0, 21, 1, 21, 2, 21, |
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131 |
3, 21, 5, 21, 8, 21, 13, 21, 21, 21, |
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132 |
-1, 21, -2, 21, -3, 21, -5, 21, -8, 21, |
||
133 |
-13, 21, -17, 21, -21, 21, 0, -1, 1, -1, |
||
134 |
2, -1, 3, -1, 5, -1, 8, -1, 13, -1, |
||
135 |
21, -1, -1, -1, -2, -1, -3, -1, -5, -1, |
||
136 |
-8, -1, -13, -1, -17, -1, -21, -1, 0, -2, |
||
137 |
1, -2, 2, -2, 3, -2, 5, -2, 8, -2, |
||
138 |
13, -2, 21, -2, -1, -2, -2, -2, -3, -2, |
||
139 |
-5, -2, -8, -2, -13, -2, -17, -2, -21, -2, |
||
140 |
0, -3, 1, -3, 2, -3, 3, -3, 5, -3, |
||
141 |
8, -3, 13, -3, 21, -3, -1, -3, -2, -3, |
||
142 |
-3, -3, -5, -3, -8, -3, -13, -3, -17, -3, |
||
143 |
-21, -3, 0, -5, 1, -5, 2, -5, 3, -5, |
||
144 |
5, -5, 8, -5, 13, -5, 21, -5, -1, -5, |
||
145 |
-2, -5, -3, -5, -5, -5, -8, -5, -13, -5, |
||
146 |
-17, -5, -21, -5, 0, -8, 1, -8, 2, -8, |
||
147 |
3, -8, 5, -8, 8, -8, 13, -8, 21, -8, |
||
148 |
-1, -8, -2, -8, -3, -8, -5, -8, -8, -8, |
||
149 |
-13, -8, -17, -8, -21, -8, 0, -13, 1, -13, |
||
150 |
2, -13, 3, -13, 5, -13, 8, -13, 13, -13, |
||
151 |
21, -13, -1, -13, -2, -13, -3, -13, -5, -13, |
||
152 |
-8, -13, -13, -13, -17, -13, -21, -13, 0, -17, |
||
153 |
1, -17, 2, -17, 3, -17, 5, -17, 8, -17, |
||
154 |
13, -17, 21, -17, -1, -17, -2, -17, -3, -17, |
||
155 |
-5, -17, -8, -17, -13, -17, -17, -17, -21, -17, |
||
156 |
0, -21, 1, -21, 2, -21, 3, -21, 5, -21, |
||
157 |
8, -21, 13, -21, 21, -21, -1, -21, -2, -21, |
||
158 |
-3, -21, -5, -21, -8, -21, -13, -21, -17, -21, |
||
159 |
0, 0, -8, -29, 8, -29, -18, -25, 17, -25, |
||
160 |
0, -23, -6, -22, 6, -22, -13, -19, 12, -19, |
||
161 |
0, -18, 25, -18, -25, -17, -5, -17, 5, -17, |
||
162 |
-10, -15, 10, -15, 0, -14, -4, -13, 4, -13, |
||
163 |
19, -13, -19, -12, -8, -11, -2, -11, 0, -11, |
||
164 |
2, -11, 8, -11, -15, -10, -4, -10, 4, -10, |
||
165 |
15, -10, -6, -9, -1, -9, 1, -9, 6, -9, |
||
166 |
-29, -8, -11, -8, -8, -8, -3, -8, 3, -8, |
||
167 |
8, -8, 11, -8, 29, -8, -5, -7, -2, -7, |
||
168 |
0, -7, 2, -7, 5, -7, -22, -6, -9, -6, |
||
169 |
-6, -6, -3, -6, -1, -6, 1, -6, 3, -6, |
||
170 |
6, -6, 9, -6, 22, -6, -17, -5, -7, -5, |
||
171 |
-4, -5, -2, -5, 0, -5, 2, -5, 4, -5, |
||
172 |
7, -5, 17, -5, -13, -4, -10, -4, -5, -4, |
||
173 |
-3, -4, -1, -4, 0, -4, 1, -4, 3, -4, |
||
174 |
5, -4, 10, -4, 13, -4, -8, -3, -6, -3, |
||
175 |
-4, -3, -3, -3, -2, -3, -1, -3, 0, -3, |
||
176 |
1, -3, 2, -3, 4, -3, 6, -3, 8, -3, |
||
177 |
-11, -2, -7, -2, -5, -2, -3, -2, -2, -2, |
||
178 |
-1, -2, 0, -2, 1, -2, 2, -2, 3, -2, |
||
179 |
5, -2, 7, -2, 11, -2, -9, -1, -6, -1, |
||
180 |
-4, -1, -3, -1, -2, -1, -1, -1, 0, -1, |
||
181 |
1, -1, 2, -1, 3, -1, 4, -1, 6, -1, |
||
182 |
9, -1, -31, 0, -23, 0, -18, 0, -14, 0, |
||
183 |
-11, 0, -7, 0, -5, 0, -4, 0, -3, 0, |
||
184 |
-2, 0, -1, 0, 0, -31, 1, 0, 2, 0, |
||
185 |
3, 0, 4, 0, 5, 0, 7, 0, 11, 0, |
||
186 |
14, 0, 18, 0, 23, 0, 31, 0, -9, 1, |
||
187 |
-6, 1, -4, 1, -3, 1, -2, 1, -1, 1, |
||
188 |
0, 1, 1, 1, 2, 1, 3, 1, 4, 1, |
||
189 |
6, 1, 9, 1, -11, 2, -7, 2, -5, 2, |
||
190 |
-3, 2, -2, 2, -1, 2, 0, 2, 1, 2, |
||
191 |
2, 2, 3, 2, 5, 2, 7, 2, 11, 2, |
||
192 |
-8, 3, -6, 3, -4, 3, -2, 3, -1, 3, |
||
193 |
0, 3, 1, 3, 2, 3, 3, 3, 4, 3, |
||
194 |
6, 3, 8, 3, -13, 4, -10, 4, -5, 4, |
||
195 |
-3, 4, -1, 4, 0, 4, 1, 4, 3, 4, |
||
196 |
5, 4, 10, 4, 13, 4, -17, 5, -7, 5, |
||
197 |
-4, 5, -2, 5, 0, 5, 2, 5, 4, 5, |
||
198 |
7, 5, 17, 5, -22, 6, -9, 6, -6, 6, |
||
199 |
-3, 6, -1, 6, 1, 6, 3, 6, 6, 6, |
||
200 |
9, 6, 22, 6, -5, 7, -2, 7, 0, 7, |
||
201 |
2, 7, 5, 7, -29, 8, -11, 8, -8, 8, |
||
202 |
-3, 8, 3, 8, 8, 8, 11, 8, 29, 8, |
||
203 |
-6, 9, -1, 9, 1, 9, 6, 9, -15, 10, |
||
204 |
-4, 10, 4, 10, 15, 10, -8, 11, -2, 11, |
||
205 |
0, 11, 2, 11, 8, 11, 19, 12, -19, 13, |
||
206 |
-4, 13, 4, 13, 0, 14, -10, 15, 10, 15, |
||
207 |
-5, 17, 5, 17, 25, 17, -25, 18, 0, 18, |
||
208 |
-12, 19, 13, 19, -6, 22, 6, 22, 0, 23, |
||
209 |
-17, 25, 18, 25, -8, 29, 8, 29, 0, 31, |
||
210 |
0, 0, -6, -22, 6, -22, -13, -19, 12, -19, |
||
211 |
0, -18, -5, -17, 5, -17, -10, -15, 10, -15, |
||
212 |
0, -14, -4, -13, 4, -13, 19, -13, -19, -12, |
||
213 |
-8, -11, -2, -11, 0, -11, 2, -11, 8, -11, |
||
214 |
-15, -10, -4, -10, 4, -10, 15, -10, -6, -9, |
||
215 |
-1, -9, 1, -9, 6, -9, -11, -8, -8, -8, |
||
216 |
-3, -8, 0, -8, 3, -8, 8, -8, 11, -8, |
||
217 |
-5, -7, -2, -7, 0, -7, 2, -7, 5, -7, |
||
218 |
-22, -6, -9, -6, -6, -6, -3, -6, -1, -6, |
||
219 |
1, -6, 3, -6, 6, -6, 9, -6, 22, -6, |
||
220 |
-17, -5, -7, -5, -4, -5, -2, -5, -1, -5, |
||
221 |
0, -5, 1, -5, 2, -5, 4, -5, 7, -5, |
||
222 |
17, -5, -13, -4, -10, -4, -5, -4, -3, -4, |
||
223 |
-2, -4, -1, -4, 0, -4, 1, -4, 2, -4, |
||
224 |
3, -4, 5, -4, 10, -4, 13, -4, -8, -3, |
||
225 |
-6, -3, -4, -3, -3, -3, -2, -3, -1, -3, |
||
226 |
0, -3, 1, -3, 2, -3, 3, -3, 4, -3, |
||
227 |
6, -3, 8, -3, -11, -2, -7, -2, -5, -2, |
||
228 |
-4, -2, -3, -2, -2, -2, -1, -2, 0, -2, |
||
229 |
1, -2, 2, -2, 3, -2, 4, -2, 5, -2, |
||
230 |
7, -2, 11, -2, -9, -1, -6, -1, -5, -1, |
||
231 |
-4, -1, -3, -1, -2, -1, -1, -1, 0, -1, |
||
232 |
1, -1, 2, -1, 3, -1, 4, -1, 5, -1, |
||
233 |
6, -1, 9, -1, -23, 0, -18, 0, -14, 0, |
||
234 |
-11, 0, -7, 0, -5, 0, -4, 0, -3, 0, |
||
235 |
-2, 0, -1, 0, 0, -23, 1, 0, 2, 0, |
||
236 |
3, 0, 4, 0, 5, 0, 7, 0, 11, 0, |
||
237 |
14, 0, 18, 0, 23, 0, -9, 1, -6, 1, |
||
238 |
-5, 1, -4, 1, -3, 1, -2, 1, -1, 1, |
||
239 |
0, 1, 1, 1, 2, 1, 3, 1, 4, 1, |
||
240 |
5, 1, 6, 1, 9, 1, -11, 2, -7, 2, |
||
241 |
-5, 2, -4, 2, -3, 2, -2, 2, -1, 2, |
||
242 |
0, 2, 1, 2, 2, 2, 3, 2, 4, 2, |
||
243 |
5, 2, 7, 2, 11, 2, -8, 3, -6, 3, |
||
244 |
-4, 3, -3, 3, -2, 3, -1, 3, 0, 3, |
||
245 |
1, 3, 2, 3, 3, 3, 4, 3, 6, 3, |
||
246 |
8, 3, -13, 4, -10, 4, -5, 4, -3, 4, |
||
247 |
-2, 4, -1, 4, 0, 4, 1, 4, 2, 4, |
||
248 |
3, 4, 5, 4, 10, 4, 13, 4, -17, 5, |
||
249 |
-7, 5, -4, 5, -2, 5, -1, 5, 0, 5, |
||
250 |
1, 5, 2, 5, 4, 5, 7, 5, 17, 5, |
||
251 |
-22, 6, -9, 6, -6, 6, -3, 6, -1, 6, |
||
252 |
1, 6, 3, 6, 6, 6, 9, 6, 22, 6, |
||
253 |
-5, 7, -2, 7, 0, 7, 2, 7, 5, 7, |
||
254 |
-11, 8, -8, 8, -3, 8, 0, 8, 3, 8, |
||
255 |
8, 8, 11, 8, -6, 9, -1, 9, 1, 9, |
||
256 |
6, 9, -15, 10, -4, 10, 4, 10, 15, 10, |
||
257 |
-8, 11, -2, 11, 0, 11, 2, 11, 8, 11, |
||
258 |
19, 12, -19, 13, -4, 13, 4, 13, 0, 14, |
||
259 |
-10, 15, 10, 15, -5, 17, 5, 17, 0, 18, |
||
260 |
-12, 19, 13, 19, -6, 22, 6, 22, 0, 23, |
||
261 |
}; |
||
262 |
|||
263 |
typedef struct SANMVideoContext { |
||
264 |
AVCodecContext *avctx; |
||
265 |
GetByteContext gb; |
||
266 |
|||
267 |
int version, subversion; |
||
268 |
uint32_t pal[PALETTE_SIZE]; |
||
269 |
int16_t delta_pal[PALETTE_DELTA]; |
||
270 |
|||
271 |
ptrdiff_t pitch; |
||
272 |
int width, height; |
||
273 |
int aligned_width, aligned_height; |
||
274 |
int prev_seq; |
||
275 |
|||
276 |
AVFrame *frame; |
||
277 |
uint16_t *frm0, *frm1, *frm2; |
||
278 |
uint8_t *stored_frame; |
||
279 |
uint32_t frm0_size, frm1_size, frm2_size; |
||
280 |
uint32_t stored_frame_size; |
||
281 |
|||
282 |
uint8_t *rle_buf; |
||
283 |
unsigned int rle_buf_size; |
||
284 |
|||
285 |
int rotate_code; |
||
286 |
|||
287 |
long npixels, buf_size; |
||
288 |
|||
289 |
uint16_t codebook[256]; |
||
290 |
uint16_t small_codebook[4]; |
||
291 |
|||
292 |
int8_t p4x4glyphs[NGLYPHS][16]; |
||
293 |
int8_t p8x8glyphs[NGLYPHS][64]; |
||
294 |
} SANMVideoContext; |
||
295 |
|||
296 |
typedef struct SANMFrameHeader { |
||
297 |
int seq_num, codec, rotate_code, rle_output_size; |
||
298 |
|||
299 |
uint16_t bg_color; |
||
300 |
uint32_t width, height; |
||
301 |
} SANMFrameHeader; |
||
302 |
|||
303 |
enum GlyphEdge { |
||
304 |
LEFT_EDGE, |
||
305 |
TOP_EDGE, |
||
306 |
RIGHT_EDGE, |
||
307 |
BOTTOM_EDGE, |
||
308 |
NO_EDGE |
||
309 |
}; |
||
310 |
|||
311 |
enum GlyphDir { |
||
312 |
DIR_LEFT, |
||
313 |
DIR_UP, |
||
314 |
DIR_RIGHT, |
||
315 |
DIR_DOWN, |
||
316 |
NO_DIR |
||
317 |
}; |
||
318 |
|||
319 |
/** |
||
320 |
* Return enum GlyphEdge of box where point (x, y) lies. |
||
321 |
* |
||
322 |
* @param x x point coordinate |
||
323 |
* @param y y point coordinate |
||
324 |
* @param edge_size box width/height. |
||
325 |
*/ |
||
326 |
1632 |
static enum GlyphEdge which_edge(int x, int y, int edge_size) |
|
327 |
{ |
||
328 |
1632 |
const int edge_max = edge_size - 1; |
|
329 |
|||
330 |
✓✓ | 1632 |
if (!y) |
331 |
408 |
return BOTTOM_EDGE; |
|
332 |
✓✓ | 1224 |
else if (y == edge_max) |
333 |
408 |
return TOP_EDGE; |
|
334 |
✓✓ | 816 |
else if (!x) |
335 |
306 |
return LEFT_EDGE; |
|
336 |
✓✓ | 510 |
else if (x == edge_max) |
337 |
306 |
return RIGHT_EDGE; |
|
338 |
else |
||
339 |
204 |
return NO_EDGE; |
|
340 |
} |
||
341 |
|||
342 |
1536 |
static enum GlyphDir which_direction(enum GlyphEdge edge0, enum GlyphEdge edge1) |
|
343 |
{ |
||
344 |
✓✓✓✓ ✓✓ |
1536 |
if ((edge0 == LEFT_EDGE && edge1 == RIGHT_EDGE) || |
345 |
✓✓✓✓ |
1476 |
(edge1 == LEFT_EDGE && edge0 == RIGHT_EDGE) || |
346 |
✓✓✓✓ |
1416 |
(edge0 == BOTTOM_EDGE && edge1 != TOP_EDGE) || |
347 |
✓✓ | 288 |
(edge1 == BOTTOM_EDGE && edge0 != TOP_EDGE)) |
348 |
600 |
return DIR_UP; |
|
349 |
✓✓✓✓ ✓✓ |
936 |
else if ((edge0 == TOP_EDGE && edge1 != BOTTOM_EDGE) || |
350 |
✓✓ | 288 |
(edge1 == TOP_EDGE && edge0 != BOTTOM_EDGE)) |
351 |
480 |
return DIR_DOWN; |
|
352 |
✓✓✗✓ ✓✓ |
456 |
else if ((edge0 == LEFT_EDGE && edge1 != RIGHT_EDGE) || |
353 |
✓✗ | 24 |
(edge1 == LEFT_EDGE && edge0 != RIGHT_EDGE)) |
354 |
108 |
return DIR_LEFT; |
|
355 |
✓✓✗✓ ✓✓ |
348 |
else if ((edge0 == TOP_EDGE && edge1 == BOTTOM_EDGE) || |
356 |
✗✓✓✓ |
252 |
(edge1 == TOP_EDGE && edge0 == BOTTOM_EDGE) || |
357 |
✗✓✓✓ |
156 |
(edge0 == RIGHT_EDGE && edge1 != LEFT_EDGE) || |
358 |
✓✗ | 24 |
(edge1 == RIGHT_EDGE && edge0 != LEFT_EDGE)) |
359 |
300 |
return DIR_RIGHT; |
|
360 |
|||
361 |
48 |
return NO_DIR; |
|
362 |
} |
||
363 |
|||
364 |
/* Interpolate two points. */ |
||
365 |
6600 |
static void interp_point(int8_t *points, int x0, int y0, int x1, int y1, |
|
366 |
int pos, int npoints) |
||
367 |
{ |
||
368 |
✓✓ | 6600 |
if (npoints) { |
369 |
6504 |
points[0] = (x0 * pos + x1 * (npoints - pos) + (npoints >> 1)) / npoints; |
|
370 |
6504 |
points[1] = (y0 * pos + y1 * (npoints - pos) + (npoints >> 1)) / npoints; |
|
371 |
} else { |
||
372 |
96 |
points[0] = x0; |
|
373 |
96 |
points[1] = y0; |
|
374 |
} |
||
375 |
6600 |
} |
|
376 |
|||
377 |
/** |
||
378 |
* Construct glyphs by iterating through vector coordinates. |
||
379 |
* |
||
380 |
* @param pglyphs pointer to table where glyphs are stored |
||
381 |
* @param xvec pointer to x component of vector coordinates |
||
382 |
* @param yvec pointer to y component of vector coordinates |
||
383 |
* @param side_length glyph width/height. |
||
384 |
*/ |
||
385 |
6 |
static void make_glyphs(int8_t *pglyphs, const int8_t *xvec, const int8_t *yvec, |
|
386 |
const int side_length) |
||
387 |
{ |
||
388 |
6 |
const int glyph_size = side_length * side_length; |
|
389 |
6 |
int8_t *pglyph = pglyphs; |
|
390 |
|||
391 |
int i, j; |
||
392 |
✓✓ | 102 |
for (i = 0; i < GLYPH_COORD_VECT_SIZE; i++) { |
393 |
96 |
int x0 = xvec[i]; |
|
394 |
96 |
int y0 = yvec[i]; |
|
395 |
96 |
enum GlyphEdge edge0 = which_edge(x0, y0, side_length); |
|
396 |
|||
397 |
✓✓ | 1632 |
for (j = 0; j < GLYPH_COORD_VECT_SIZE; j++, pglyph += glyph_size) { |
398 |
1536 |
int x1 = xvec[j]; |
|
399 |
1536 |
int y1 = yvec[j]; |
|
400 |
1536 |
enum GlyphEdge edge1 = which_edge(x1, y1, side_length); |
|
401 |
1536 |
enum GlyphDir dir = which_direction(edge0, edge1); |
|
402 |
1536 |
int npoints = FFMAX(FFABS(x1 - x0), FFABS(y1 - y0)); |
|
403 |
int ipoint; |
||
404 |
|||
405 |
✓✓ | 8136 |
for (ipoint = 0; ipoint <= npoints; ipoint++) { |
406 |
int8_t point[2]; |
||
407 |
int irow, icol; |
||
408 |
|||
409 |
6600 |
interp_point(point, x0, y0, x1, y1, ipoint, npoints); |
|
410 |
|||
411 |
✓✓✓✓ ✓ |
6600 |
switch (dir) { |
412 |
2832 |
case DIR_UP: |
|
413 |
✓✓ | 11064 |
for (irow = point[1]; irow >= 0; irow--) |
414 |
8232 |
pglyph[point[0] + irow * side_length] = 1; |
|
415 |
2832 |
break; |
|
416 |
|||
417 |
1968 |
case DIR_DOWN: |
|
418 |
✓✓ | 6468 |
for (irow = point[1]; irow < side_length; irow++) |
419 |
4500 |
pglyph[point[0] + irow * side_length] = 1; |
|
420 |
1968 |
break; |
|
421 |
|||
422 |
282 |
case DIR_LEFT: |
|
423 |
✓✓ | 660 |
for (icol = point[0]; icol >= 0; icol--) |
424 |
378 |
pglyph[icol + point[1] * side_length] = 1; |
|
425 |
282 |
break; |
|
426 |
|||
427 |
1434 |
case DIR_RIGHT: |
|
428 |
✓✓ | 6228 |
for (icol = point[0]; icol < side_length; icol++) |
429 |
4794 |
pglyph[icol + point[1] * side_length] = 1; |
|
430 |
1434 |
break; |
|
431 |
} |
||
432 |
6600 |
} |
|
433 |
} |
||
434 |
} |
||
435 |
6 |
} |
|
436 |
|||
437 |
6 |
static void init_sizes(SANMVideoContext *ctx, int width, int height) |
|
438 |
{ |
||
439 |
6 |
ctx->width = width; |
|
440 |
6 |
ctx->height = height; |
|
441 |
6 |
ctx->npixels = width * height; |
|
442 |
|||
443 |
6 |
ctx->aligned_width = FFALIGN(width, 8); |
|
444 |
6 |
ctx->aligned_height = FFALIGN(height, 8); |
|
445 |
|||
446 |
6 |
ctx->buf_size = ctx->aligned_width * ctx->aligned_height * sizeof(ctx->frm0[0]); |
|
447 |
6 |
ctx->pitch = width; |
|
448 |
6 |
} |
|
449 |
|||
450 |
3 |
static void destroy_buffers(SANMVideoContext *ctx) |
|
451 |
{ |
||
452 |
3 |
av_freep(&ctx->frm0); |
|
453 |
3 |
av_freep(&ctx->frm1); |
|
454 |
3 |
av_freep(&ctx->frm2); |
|
455 |
3 |
av_freep(&ctx->stored_frame); |
|
456 |
3 |
av_freep(&ctx->rle_buf); |
|
457 |
3 |
ctx->frm0_size = |
|
458 |
3 |
ctx->frm1_size = |
|
459 |
3 |
ctx->frm2_size = 0; |
|
460 |
3 |
init_sizes(ctx, 0, 0); |
|
461 |
3 |
} |
|
462 |
|||
463 |
3 |
static av_cold int init_buffers(SANMVideoContext *ctx) |
|
464 |
{ |
||
465 |
3 |
av_fast_padded_mallocz(&ctx->frm0, &ctx->frm0_size, ctx->buf_size); |
|
466 |
3 |
av_fast_padded_mallocz(&ctx->frm1, &ctx->frm1_size, ctx->buf_size); |
|
467 |
3 |
av_fast_padded_mallocz(&ctx->frm2, &ctx->frm2_size, ctx->buf_size); |
|
468 |
✗✓ | 3 |
if (!ctx->version) |
469 |
av_fast_padded_mallocz(&ctx->stored_frame, |
||
470 |
&ctx->stored_frame_size, ctx->buf_size); |
||
471 |
|||
472 |
✓✗✓✗ ✓✗ |
3 |
if (!ctx->frm0 || !ctx->frm1 || !ctx->frm2 || |
473 |
✓✗✗✓ |
3 |
(!ctx->stored_frame && !ctx->version)) { |
474 |
destroy_buffers(ctx); |
||
475 |
return AVERROR(ENOMEM); |
||
476 |
} |
||
477 |
|||
478 |
3 |
return 0; |
|
479 |
} |
||
480 |
|||
481 |
9 |
static void rotate_bufs(SANMVideoContext *ctx, int rotate_code) |
|
482 |
{ |
||
483 |
✓✓ | 9 |
if (rotate_code == 2) |
484 |
1 |
FFSWAP(uint16_t*, ctx->frm1, ctx->frm2); |
|
485 |
9 |
FFSWAP(uint16_t*, ctx->frm2, ctx->frm0); |
|
486 |
9 |
} |
|
487 |
|||
488 |
3 |
static av_cold int decode_init(AVCodecContext *avctx) |
|
489 |
{ |
||
490 |
3 |
SANMVideoContext *ctx = avctx->priv_data; |
|
491 |
|||
492 |
3 |
ctx->avctx = avctx; |
|
493 |
3 |
ctx->version = !avctx->extradata_size; |
|
494 |
// early sanity check before allocations to avoid need for deallocation code. |
||
495 |
✗✓✗✗ |
3 |
if (!ctx->version && avctx->extradata_size < 1026) { |
496 |
av_log(avctx, AV_LOG_ERROR, "Not enough extradata.\n"); |
||
497 |
return AVERROR_INVALIDDATA; |
||
498 |
} |
||
499 |
|||
500 |
✓✗ | 3 |
avctx->pix_fmt = ctx->version ? AV_PIX_FMT_RGB565 : AV_PIX_FMT_PAL8; |
501 |
|||
502 |
3 |
init_sizes(ctx, avctx->width, avctx->height); |
|
503 |
✗✓ | 3 |
if (init_buffers(ctx)) { |
504 |
av_log(avctx, AV_LOG_ERROR, "Error allocating buffers.\n"); |
||
505 |
return AVERROR(ENOMEM); |
||
506 |
} |
||
507 |
|||
508 |
3 |
make_glyphs(ctx->p4x4glyphs[0], glyph4_x, glyph4_y, 4); |
|
509 |
3 |
make_glyphs(ctx->p8x8glyphs[0], glyph8_x, glyph8_y, 8); |
|
510 |
|||
511 |
✗✓ | 3 |
if (!ctx->version) { |
512 |
int i; |
||
513 |
|||
514 |
ctx->subversion = AV_RL16(avctx->extradata); |
||
515 |
for (i = 0; i < PALETTE_SIZE; i++) |
||
516 |
ctx->pal[i] = 0xFFU << 24 | AV_RL32(avctx->extradata + 2 + i * 4); |
||
517 |
} |
||
518 |
|||
519 |
3 |
return 0; |
|
520 |
} |
||
521 |
|||
522 |
3 |
static av_cold int decode_end(AVCodecContext *avctx) |
|
523 |
{ |
||
524 |
3 |
SANMVideoContext *ctx = avctx->priv_data; |
|
525 |
|||
526 |
3 |
destroy_buffers(ctx); |
|
527 |
|||
528 |
3 |
return 0; |
|
529 |
} |
||
530 |
|||
531 |
1 |
static int rle_decode(SANMVideoContext *ctx, uint8_t *dst, const int out_size) |
|
532 |
{ |
||
533 |
1 |
int opcode, color, run_len, left = out_size; |
|
534 |
|||
535 |
✓✓ | 4801 |
while (left > 0) { |
536 |
4800 |
opcode = bytestream2_get_byte(&ctx->gb); |
|
537 |
4800 |
run_len = (opcode >> 1) + 1; |
|
538 |
✓✗✗✓ |
4800 |
if (run_len > left || bytestream2_get_bytes_left(&ctx->gb) <= 0) |
539 |
return AVERROR_INVALIDDATA; |
||
540 |
|||
541 |
✓✗ | 4800 |
if (opcode & 1) { |
542 |
4800 |
color = bytestream2_get_byte(&ctx->gb); |
|
543 |
4800 |
memset(dst, color, run_len); |
|
544 |
} else { |
||
545 |
if (bytestream2_get_bytes_left(&ctx->gb) < run_len) |
||
546 |
return AVERROR_INVALIDDATA; |
||
547 |
bytestream2_get_bufferu(&ctx->gb, dst, run_len); |
||
548 |
} |
||
549 |
|||
550 |
4800 |
dst += run_len; |
|
551 |
4800 |
left -= run_len; |
|
552 |
} |
||
553 |
|||
554 |
1 |
return 0; |
|
555 |
} |
||
556 |
|||
557 |
static int old_codec1(SANMVideoContext *ctx, int top, |
||
558 |
int left, int width, int height) |
||
559 |
{ |
||
560 |
uint8_t *dst = ((uint8_t *)ctx->frm0) + left + top * ctx->pitch; |
||
561 |
int i, j, len, flag, code, val, pos, end; |
||
562 |
|||
563 |
for (i = 0; i < height; i++) { |
||
564 |
pos = 0; |
||
565 |
|||
566 |
if (bytestream2_get_bytes_left(&ctx->gb) < 2) |
||
567 |
return AVERROR_INVALIDDATA; |
||
568 |
|||
569 |
len = bytestream2_get_le16u(&ctx->gb); |
||
570 |
end = bytestream2_tell(&ctx->gb) + len; |
||
571 |
|||
572 |
while (bytestream2_tell(&ctx->gb) < end) { |
||
573 |
if (bytestream2_get_bytes_left(&ctx->gb) < 2) |
||
574 |
return AVERROR_INVALIDDATA; |
||
575 |
|||
576 |
code = bytestream2_get_byteu(&ctx->gb); |
||
577 |
flag = code & 1; |
||
578 |
code = (code >> 1) + 1; |
||
579 |
if (pos + code > width) |
||
580 |
return AVERROR_INVALIDDATA; |
||
581 |
if (flag) { |
||
582 |
val = bytestream2_get_byteu(&ctx->gb); |
||
583 |
if (val) |
||
584 |
memset(dst + pos, val, code); |
||
585 |
pos += code; |
||
586 |
} else { |
||
587 |
if (bytestream2_get_bytes_left(&ctx->gb) < code) |
||
588 |
return AVERROR_INVALIDDATA; |
||
589 |
for (j = 0; j < code; j++) { |
||
590 |
val = bytestream2_get_byteu(&ctx->gb); |
||
591 |
if (val) |
||
592 |
dst[pos] = val; |
||
593 |
pos++; |
||
594 |
} |
||
595 |
} |
||
596 |
} |
||
597 |
dst += ctx->pitch; |
||
598 |
} |
||
599 |
ctx->rotate_code = 0; |
||
600 |
|||
601 |
return 0; |
||
602 |
} |
||
603 |
|||
604 |
static inline void codec37_mv(uint8_t *dst, const uint8_t *src, |
||
605 |
int height, int stride, int x, int y) |
||
606 |
{ |
||
607 |
int pos, i, j; |
||
608 |
|||
609 |
pos = x + y * stride; |
||
610 |
for (j = 0; j < 4; j++) { |
||
611 |
for (i = 0; i < 4; i++) { |
||
612 |
if ((pos + i) < 0 || (pos + i) >= height * stride) |
||
613 |
dst[i] = 0; |
||
614 |
else |
||
615 |
dst[i] = src[i]; |
||
616 |
} |
||
617 |
dst += stride; |
||
618 |
src += stride; |
||
619 |
pos += stride; |
||
620 |
} |
||
621 |
} |
||
622 |
|||
623 |
static int old_codec37(SANMVideoContext *ctx, int top, |
||
624 |
int left, int width, int height) |
||
625 |
{ |
||
626 |
ptrdiff_t stride = ctx->pitch; |
||
627 |
int i, j, k, t; |
||
628 |
uint8_t *dst, *prev; |
||
629 |
int skip_run = 0; |
||
630 |
int compr = bytestream2_get_byte(&ctx->gb); |
||
631 |
int mvoff = bytestream2_get_byte(&ctx->gb); |
||
632 |
int seq = bytestream2_get_le16(&ctx->gb); |
||
633 |
uint32_t decoded_size = bytestream2_get_le32(&ctx->gb); |
||
634 |
int flags; |
||
635 |
|||
636 |
bytestream2_skip(&ctx->gb, 4); |
||
637 |
flags = bytestream2_get_byte(&ctx->gb); |
||
638 |
bytestream2_skip(&ctx->gb, 3); |
||
639 |
|||
640 |
if (decoded_size > ctx->height * stride - left - top * stride) { |
||
641 |
decoded_size = ctx->height * stride - left - top * stride; |
||
642 |
av_log(ctx->avctx, AV_LOG_WARNING, "Decoded size is too large.\n"); |
||
643 |
} |
||
644 |
|||
645 |
ctx->rotate_code = 0; |
||
646 |
|||
647 |
if (((seq & 1) || !(flags & 1)) && (compr && compr != 2)) |
||
648 |
rotate_bufs(ctx, 1); |
||
649 |
|||
650 |
dst = ((uint8_t*)ctx->frm0) + left + top * stride; |
||
651 |
prev = ((uint8_t*)ctx->frm2) + left + top * stride; |
||
652 |
|||
653 |
if (mvoff > 2) { |
||
654 |
av_log(ctx->avctx, AV_LOG_ERROR, "Invalid motion base value %d.\n", mvoff); |
||
655 |
return AVERROR_INVALIDDATA; |
||
656 |
} |
||
657 |
|||
658 |
switch (compr) { |
||
659 |
case 0: |
||
660 |
for (i = 0; i < height; i++) { |
||
661 |
bytestream2_get_buffer(&ctx->gb, dst, width); |
||
662 |
dst += stride; |
||
663 |
} |
||
664 |
memset(ctx->frm1, 0, ctx->height * stride); |
||
665 |
memset(ctx->frm2, 0, ctx->height * stride); |
||
666 |
break; |
||
667 |
case 2: |
||
668 |
if (rle_decode(ctx, dst, decoded_size)) |
||
669 |
return AVERROR_INVALIDDATA; |
||
670 |
memset(ctx->frm1, 0, ctx->frm1_size); |
||
671 |
memset(ctx->frm2, 0, ctx->frm2_size); |
||
672 |
break; |
||
673 |
case 3: |
||
674 |
case 4: |
||
675 |
if (flags & 4) { |
||
676 |
for (j = 0; j < height; j += 4) { |
||
677 |
for (i = 0; i < width; i += 4) { |
||
678 |
int code; |
||
679 |
if (skip_run) { |
||
680 |
skip_run--; |
||
681 |
copy_block4(dst + i, prev + i, stride, stride, 4); |
||
682 |
continue; |
||
683 |
} |
||
684 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
||
685 |
return AVERROR_INVALIDDATA; |
||
686 |
code = bytestream2_get_byteu(&ctx->gb); |
||
687 |
switch (code) { |
||
688 |
case 0xFF: |
||
689 |
if (bytestream2_get_bytes_left(&ctx->gb) < 16) |
||
690 |
return AVERROR_INVALIDDATA; |
||
691 |
for (k = 0; k < 4; k++) |
||
692 |
bytestream2_get_bufferu(&ctx->gb, dst + i + k * stride, 4); |
||
693 |
break; |
||
694 |
case 0xFE: |
||
695 |
if (bytestream2_get_bytes_left(&ctx->gb) < 4) |
||
696 |
return AVERROR_INVALIDDATA; |
||
697 |
for (k = 0; k < 4; k++) |
||
698 |
memset(dst + i + k * stride, bytestream2_get_byteu(&ctx->gb), 4); |
||
699 |
break; |
||
700 |
case 0xFD: |
||
701 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
||
702 |
return AVERROR_INVALIDDATA; |
||
703 |
t = bytestream2_get_byteu(&ctx->gb); |
||
704 |
for (k = 0; k < 4; k++) |
||
705 |
memset(dst + i + k * stride, t, 4); |
||
706 |
break; |
||
707 |
default: |
||
708 |
if (compr == 4 && !code) { |
||
709 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
||
710 |
return AVERROR_INVALIDDATA; |
||
711 |
skip_run = bytestream2_get_byteu(&ctx->gb) + 1; |
||
712 |
i -= 4; |
||
713 |
} else { |
||
714 |
int mx, my; |
||
715 |
|||
716 |
mx = c37_mv[(mvoff * 255 + code) * 2]; |
||
717 |
my = c37_mv[(mvoff * 255 + code) * 2 + 1]; |
||
718 |
codec37_mv(dst + i, prev + i + mx + my * stride, |
||
719 |
ctx->height, stride, i + mx, j + my); |
||
720 |
} |
||
721 |
} |
||
722 |
} |
||
723 |
dst += stride * 4; |
||
724 |
prev += stride * 4; |
||
725 |
} |
||
726 |
} else { |
||
727 |
for (j = 0; j < height; j += 4) { |
||
728 |
for (i = 0; i < width; i += 4) { |
||
729 |
int code; |
||
730 |
if (skip_run) { |
||
731 |
skip_run--; |
||
732 |
copy_block4(dst + i, prev + i, stride, stride, 4); |
||
733 |
continue; |
||
734 |
} |
||
735 |
code = bytestream2_get_byte(&ctx->gb); |
||
736 |
if (code == 0xFF) { |
||
737 |
if (bytestream2_get_bytes_left(&ctx->gb) < 16) |
||
738 |
return AVERROR_INVALIDDATA; |
||
739 |
for (k = 0; k < 4; k++) |
||
740 |
bytestream2_get_bufferu(&ctx->gb, dst + i + k * stride, 4); |
||
741 |
} else if (compr == 4 && !code) { |
||
742 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
||
743 |
return AVERROR_INVALIDDATA; |
||
744 |
skip_run = bytestream2_get_byteu(&ctx->gb) + 1; |
||
745 |
i -= 4; |
||
746 |
} else { |
||
747 |
int mx, my; |
||
748 |
|||
749 |
mx = c37_mv[(mvoff * 255 + code) * 2]; |
||
750 |
my = c37_mv[(mvoff * 255 + code) * 2 + 1]; |
||
751 |
codec37_mv(dst + i, prev + i + mx + my * stride, |
||
752 |
ctx->height, stride, i + mx, j + my); |
||
753 |
} |
||
754 |
} |
||
755 |
dst += stride * 4; |
||
756 |
prev += stride * 4; |
||
757 |
} |
||
758 |
} |
||
759 |
break; |
||
760 |
default: |
||
761 |
avpriv_report_missing_feature(ctx->avctx, |
||
762 |
"Subcodec 37 compression %d", compr); |
||
763 |
return AVERROR_PATCHWELCOME; |
||
764 |
} |
||
765 |
|||
766 |
return 0; |
||
767 |
} |
||
768 |
|||
769 |
static int process_block(SANMVideoContext *ctx, uint8_t *dst, uint8_t *prev1, |
||
770 |
uint8_t *prev2, int stride, int tbl, int size) |
||
771 |
{ |
||
772 |
int code, k, t; |
||
773 |
uint8_t colors[2]; |
||
774 |
int8_t *pglyph; |
||
775 |
|||
776 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
||
777 |
return AVERROR_INVALIDDATA; |
||
778 |
|||
779 |
code = bytestream2_get_byteu(&ctx->gb); |
||
780 |
if (code >= 0xF8) { |
||
781 |
switch (code) { |
||
782 |
case 0xFF: |
||
783 |
if (size == 2) { |
||
784 |
if (bytestream2_get_bytes_left(&ctx->gb) < 4) |
||
785 |
return AVERROR_INVALIDDATA; |
||
786 |
dst[0] = bytestream2_get_byteu(&ctx->gb); |
||
787 |
dst[1] = bytestream2_get_byteu(&ctx->gb); |
||
788 |
dst[0 + stride] = bytestream2_get_byteu(&ctx->gb); |
||
789 |
dst[1 + stride] = bytestream2_get_byteu(&ctx->gb); |
||
790 |
} else { |
||
791 |
size >>= 1; |
||
792 |
if (process_block(ctx, dst, prev1, prev2, stride, tbl, size)) |
||
793 |
return AVERROR_INVALIDDATA; |
||
794 |
if (process_block(ctx, dst + size, prev1 + size, prev2 + size, |
||
795 |
stride, tbl, size)) |
||
796 |
return AVERROR_INVALIDDATA; |
||
797 |
dst += size * stride; |
||
798 |
prev1 += size * stride; |
||
799 |
prev2 += size * stride; |
||
800 |
if (process_block(ctx, dst, prev1, prev2, stride, tbl, size)) |
||
801 |
return AVERROR_INVALIDDATA; |
||
802 |
if (process_block(ctx, dst + size, prev1 + size, prev2 + size, |
||
803 |
stride, tbl, size)) |
||
804 |
return AVERROR_INVALIDDATA; |
||
805 |
} |
||
806 |
break; |
||
807 |
case 0xFE: |
||
808 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
||
809 |
return AVERROR_INVALIDDATA; |
||
810 |
|||
811 |
t = bytestream2_get_byteu(&ctx->gb); |
||
812 |
for (k = 0; k < size; k++) |
||
813 |
memset(dst + k * stride, t, size); |
||
814 |
break; |
||
815 |
case 0xFD: |
||
816 |
if (bytestream2_get_bytes_left(&ctx->gb) < 3) |
||
817 |
return AVERROR_INVALIDDATA; |
||
818 |
|||
819 |
code = bytestream2_get_byteu(&ctx->gb); |
||
820 |
pglyph = (size == 8) ? ctx->p8x8glyphs[code] : ctx->p4x4glyphs[code]; |
||
821 |
bytestream2_get_bufferu(&ctx->gb, colors, 2); |
||
822 |
|||
823 |
for (k = 0; k < size; k++) |
||
824 |
for (t = 0; t < size; t++) |
||
825 |
dst[t + k * stride] = colors[!*pglyph++]; |
||
826 |
break; |
||
827 |
case 0xFC: |
||
828 |
for (k = 0; k < size; k++) |
||
829 |
memcpy(dst + k * stride, prev1 + k * stride, size); |
||
830 |
break; |
||
831 |
default: |
||
832 |
k = bytestream2_tell(&ctx->gb); |
||
833 |
bytestream2_seek(&ctx->gb, tbl + (code & 7), SEEK_SET); |
||
834 |
t = bytestream2_get_byte(&ctx->gb); |
||
835 |
bytestream2_seek(&ctx->gb, k, SEEK_SET); |
||
836 |
for (k = 0; k < size; k++) |
||
837 |
memset(dst + k * stride, t, size); |
||
838 |
} |
||
839 |
} else { |
||
840 |
int mx = motion_vectors[code][0]; |
||
841 |
int my = motion_vectors[code][1]; |
||
842 |
int index = prev2 - (const uint8_t *)ctx->frm2; |
||
843 |
|||
844 |
av_assert2(index >= 0 && index < (ctx->buf_size >> 1)); |
||
845 |
|||
846 |
if (index < -mx - my * stride || |
||
847 |
(ctx->buf_size >> 1) - index < mx + size + (my + size - 1) * stride) { |
||
848 |
av_log(ctx->avctx, AV_LOG_ERROR, "MV is invalid.\n"); |
||
849 |
return AVERROR_INVALIDDATA; |
||
850 |
} |
||
851 |
|||
852 |
for (k = 0; k < size; k++) |
||
853 |
memcpy(dst + k * stride, prev2 + mx + (my + k) * stride, size); |
||
854 |
} |
||
855 |
|||
856 |
return 0; |
||
857 |
} |
||
858 |
|||
859 |
static int old_codec47(SANMVideoContext *ctx, int top, |
||
860 |
int left, int width, int height) |
||
861 |
{ |
||
862 |
uint32_t decoded_size; |
||
863 |
int i, j; |
||
864 |
ptrdiff_t stride = ctx->pitch; |
||
865 |
uint8_t *dst = (uint8_t *)ctx->frm0 + left + top * stride; |
||
866 |
uint8_t *prev1 = (uint8_t *)ctx->frm1; |
||
867 |
uint8_t *prev2 = (uint8_t *)ctx->frm2; |
||
868 |
int tbl_pos = bytestream2_tell(&ctx->gb); |
||
869 |
int seq = bytestream2_get_le16(&ctx->gb); |
||
870 |
int compr = bytestream2_get_byte(&ctx->gb); |
||
871 |
int new_rot = bytestream2_get_byte(&ctx->gb); |
||
872 |
int skip = bytestream2_get_byte(&ctx->gb); |
||
873 |
|||
874 |
bytestream2_skip(&ctx->gb, 9); |
||
875 |
decoded_size = bytestream2_get_le32(&ctx->gb); |
||
876 |
bytestream2_skip(&ctx->gb, 8); |
||
877 |
|||
878 |
if (decoded_size > ctx->height * stride - left - top * stride) { |
||
879 |
decoded_size = ctx->height * stride - left - top * stride; |
||
880 |
av_log(ctx->avctx, AV_LOG_WARNING, "Decoded size is too large.\n"); |
||
881 |
} |
||
882 |
|||
883 |
if (skip & 1) |
||
884 |
bytestream2_skip(&ctx->gb, 0x8080); |
||
885 |
if (!seq) { |
||
886 |
ctx->prev_seq = -1; |
||
887 |
memset(prev1, 0, ctx->height * stride); |
||
888 |
memset(prev2, 0, ctx->height * stride); |
||
889 |
} |
||
890 |
|||
891 |
switch (compr) { |
||
892 |
case 0: |
||
893 |
if (bytestream2_get_bytes_left(&ctx->gb) < width * height) |
||
894 |
return AVERROR_INVALIDDATA; |
||
895 |
for (j = 0; j < height; j++) { |
||
896 |
bytestream2_get_bufferu(&ctx->gb, dst, width); |
||
897 |
dst += stride; |
||
898 |
} |
||
899 |
break; |
||
900 |
case 1: |
||
901 |
if (bytestream2_get_bytes_left(&ctx->gb) < ((width + 1) >> 1) * ((height + 1) >> 1)) |
||
902 |
return AVERROR_INVALIDDATA; |
||
903 |
for (j = 0; j < height; j += 2) { |
||
904 |
for (i = 0; i < width; i += 2) { |
||
905 |
dst[i] = |
||
906 |
dst[i + 1] = |
||
907 |
dst[stride + i] = |
||
908 |
dst[stride + i + 1] = bytestream2_get_byteu(&ctx->gb); |
||
909 |
} |
||
910 |
dst += stride * 2; |
||
911 |
} |
||
912 |
break; |
||
913 |
case 2: |
||
914 |
if (seq == ctx->prev_seq + 1) { |
||
915 |
for (j = 0; j < height; j += 8) { |
||
916 |
for (i = 0; i < width; i += 8) |
||
917 |
if (process_block(ctx, dst + i, prev1 + i, prev2 + i, stride, |
||
918 |
tbl_pos + 8, 8)) |
||
919 |
return AVERROR_INVALIDDATA; |
||
920 |
dst += stride * 8; |
||
921 |
prev1 += stride * 8; |
||
922 |
prev2 += stride * 8; |
||
923 |
} |
||
924 |
} |
||
925 |
break; |
||
926 |
case 3: |
||
927 |
memcpy(ctx->frm0, ctx->frm2, ctx->pitch * ctx->height); |
||
928 |
break; |
||
929 |
case 4: |
||
930 |
memcpy(ctx->frm0, ctx->frm1, ctx->pitch * ctx->height); |
||
931 |
break; |
||
932 |
case 5: |
||
933 |
if (rle_decode(ctx, dst, decoded_size)) |
||
934 |
return AVERROR_INVALIDDATA; |
||
935 |
break; |
||
936 |
default: |
||
937 |
avpriv_report_missing_feature(ctx->avctx, |
||
938 |
"Subcodec 47 compression %d", compr); |
||
939 |
return AVERROR_PATCHWELCOME; |
||
940 |
} |
||
941 |
if (seq == ctx->prev_seq + 1) |
||
942 |
ctx->rotate_code = new_rot; |
||
943 |
else |
||
944 |
ctx->rotate_code = 0; |
||
945 |
ctx->prev_seq = seq; |
||
946 |
|||
947 |
return 0; |
||
948 |
} |
||
949 |
|||
950 |
static int process_frame_obj(SANMVideoContext *ctx) |
||
951 |
{ |
||
952 |
uint16_t codec = bytestream2_get_le16u(&ctx->gb); |
||
953 |
uint16_t left = bytestream2_get_le16u(&ctx->gb); |
||
954 |
uint16_t top = bytestream2_get_le16u(&ctx->gb); |
||
955 |
uint16_t w = bytestream2_get_le16u(&ctx->gb); |
||
956 |
uint16_t h = bytestream2_get_le16u(&ctx->gb); |
||
957 |
|||
958 |
if (!w || !h) { |
||
959 |
av_log(ctx->avctx, AV_LOG_ERROR, "Dimensions are invalid.\n"); |
||
960 |
return AVERROR_INVALIDDATA; |
||
961 |
} |
||
962 |
|||
963 |
if (ctx->width < left + w || ctx->height < top + h) { |
||
964 |
int ret = ff_set_dimensions(ctx->avctx, FFMAX(left + w, ctx->width), |
||
965 |
FFMAX(top + h, ctx->height)); |
||
966 |
if (ret < 0) |
||
967 |
return ret; |
||
968 |
init_sizes(ctx, FFMAX(left + w, ctx->width), |
||
969 |
FFMAX(top + h, ctx->height)); |
||
970 |
if (init_buffers(ctx)) { |
||
971 |
av_log(ctx->avctx, AV_LOG_ERROR, "Error resizing buffers.\n"); |
||
972 |
return AVERROR(ENOMEM); |
||
973 |
} |
||
974 |
} |
||
975 |
bytestream2_skip(&ctx->gb, 4); |
||
976 |
|||
977 |
switch (codec) { |
||
978 |
case 1: |
||
979 |
case 3: |
||
980 |
return old_codec1(ctx, top, left, w, h); |
||
981 |
case 37: |
||
982 |
return old_codec37(ctx, top, left, w, h); |
||
983 |
case 47: |
||
984 |
return old_codec47(ctx, top, left, w, h); |
||
985 |
default: |
||
986 |
avpriv_request_sample(ctx->avctx, "Subcodec %d", codec); |
||
987 |
return AVERROR_PATCHWELCOME; |
||
988 |
} |
||
989 |
} |
||
990 |
|||
991 |
static int decode_0(SANMVideoContext *ctx) |
||
992 |
{ |
||
993 |
uint16_t *frm = ctx->frm0; |
||
994 |
int x, y; |
||
995 |
|||
996 |
if (bytestream2_get_bytes_left(&ctx->gb) < ctx->width * ctx->height * 2) { |
||
997 |
av_log(ctx->avctx, AV_LOG_ERROR, "Insufficient data for raw frame.\n"); |
||
998 |
return AVERROR_INVALIDDATA; |
||
999 |
} |
||
1000 |
for (y = 0; y < ctx->height; y++) { |
||
1001 |
for (x = 0; x < ctx->width; x++) |
||
1002 |
frm[x] = bytestream2_get_le16u(&ctx->gb); |
||
1003 |
frm += ctx->pitch; |
||
1004 |
} |
||
1005 |
return 0; |
||
1006 |
} |
||
1007 |
|||
1008 |
static int decode_nop(SANMVideoContext *ctx) |
||
1009 |
{ |
||
1010 |
avpriv_request_sample(ctx->avctx, "Unknown/unsupported compression type"); |
||
1011 |
return AVERROR_PATCHWELCOME; |
||
1012 |
} |
||
1013 |
|||
1014 |
42964 |
static void copy_block(uint16_t *pdest, uint16_t *psrc, int block_size, ptrdiff_t pitch) |
|
1015 |
{ |
||
1016 |
42964 |
uint8_t *dst = (uint8_t *)pdest; |
|
1017 |
42964 |
uint8_t *src = (uint8_t *)psrc; |
|
1018 |
42964 |
ptrdiff_t stride = pitch * 2; |
|
1019 |
|||
1020 |
✓✓✓✗ |
42964 |
switch (block_size) { |
1021 |
14526 |
case 2: |
|
1022 |
14526 |
copy_block4(dst, src, stride, stride, 2); |
|
1023 |
14526 |
break; |
|
1024 |
12400 |
case 4: |
|
1025 |
12400 |
copy_block8(dst, src, stride, stride, 4); |
|
1026 |
12400 |
break; |
|
1027 |
16038 |
case 8: |
|
1028 |
16038 |
copy_block16(dst, src, stride, stride, 8); |
|
1029 |
16038 |
break; |
|
1030 |
} |
||
1031 |
42964 |
} |
|
1032 |
|||
1033 |
7913 |
static void fill_block(uint16_t *pdest, uint16_t color, int block_size, ptrdiff_t pitch) |
|
1034 |
{ |
||
1035 |
int x, y; |
||
1036 |
|||
1037 |
7913 |
pitch -= block_size; |
|
1038 |
✓✓ | 38351 |
for (y = 0; y < block_size; y++, pdest += pitch) |
1039 |
✓✓ | 179978 |
for (x = 0; x < block_size; x++) |
1040 |
149540 |
*pdest++ = color; |
|
1041 |
7913 |
} |
|
1042 |
|||
1043 |
8368 |
static int draw_glyph(SANMVideoContext *ctx, uint16_t *dst, int index, |
|
1044 |
uint16_t fg_color, uint16_t bg_color, int block_size, |
||
1045 |
ptrdiff_t pitch) |
||
1046 |
{ |
||
1047 |
int8_t *pglyph; |
||
1048 |
8368 |
uint16_t colors[2] = { fg_color, bg_color }; |
|
1049 |
int x, y; |
||
1050 |
|||
1051 |
✗✓ | 8368 |
if (index >= NGLYPHS) { |
1052 |
av_log(ctx->avctx, AV_LOG_ERROR, "Ignoring nonexistent glyph #%u.\n", index); |
||
1053 |
return AVERROR_INVALIDDATA; |
||
1054 |
} |
||
1055 |
|||
1056 |
✓✓ | 8368 |
pglyph = block_size == 8 ? ctx->p8x8glyphs[index] : ctx->p4x4glyphs[index]; |
1057 |
8368 |
pitch -= block_size; |
|
1058 |
|||
1059 |
✓✓ | 46472 |
for (y = 0; y < block_size; y++, dst += pitch) |
1060 |
✓✓ | 227576 |
for (x = 0; x < block_size; x++) |
1061 |
189472 |
*dst++ = colors[*pglyph++]; |
|
1062 |
8368 |
return 0; |
|
1063 |
} |
||
1064 |
|||
1065 |
8029 |
static int opcode_0xf7(SANMVideoContext *ctx, int cx, int cy, int block_size, ptrdiff_t pitch) |
|
1066 |
{ |
||
1067 |
8029 |
uint16_t *dst = ctx->frm0 + cx + cy * ctx->pitch; |
|
1068 |
|||
1069 |
✓✓ | 8029 |
if (block_size == 2) { |
1070 |
uint32_t indices; |
||
1071 |
|||
1072 |
✗✓ | 825 |
if (bytestream2_get_bytes_left(&ctx->gb) < 4) |
1073 |
return AVERROR_INVALIDDATA; |
||
1074 |
|||
1075 |
825 |
indices = bytestream2_get_le32u(&ctx->gb); |
|
1076 |
825 |
dst[0] = ctx->codebook[indices & 0xFF]; |
|
1077 |
825 |
indices >>= 8; |
|
1078 |
825 |
dst[1] = ctx->codebook[indices & 0xFF]; |
|
1079 |
825 |
indices >>= 8; |
|
1080 |
825 |
dst[pitch] = ctx->codebook[indices & 0xFF]; |
|
1081 |
825 |
indices >>= 8; |
|
1082 |
825 |
dst[pitch + 1] = ctx->codebook[indices & 0xFF]; |
|
1083 |
} else { |
||
1084 |
uint16_t fgcolor, bgcolor; |
||
1085 |
int glyph; |
||
1086 |
|||
1087 |
✓✓ | 7204 |
if (bytestream2_get_bytes_left(&ctx->gb) < 3) |
1088 |
1 |
return AVERROR_INVALIDDATA; |
|
1089 |
|||
1090 |
7203 |
glyph = bytestream2_get_byteu(&ctx->gb); |
|
1091 |
7203 |
bgcolor = ctx->codebook[bytestream2_get_byteu(&ctx->gb)]; |
|
1092 |
7203 |
fgcolor = ctx->codebook[bytestream2_get_byteu(&ctx->gb)]; |
|
1093 |
|||
1094 |
7203 |
draw_glyph(ctx, dst, glyph, fgcolor, bgcolor, block_size, pitch); |
|
1095 |
} |
||
1096 |
8028 |
return 0; |
|
1097 |
} |
||
1098 |
|||
1099 |
1169 |
static int opcode_0xf8(SANMVideoContext *ctx, int cx, int cy, int block_size, ptrdiff_t pitch) |
|
1100 |
{ |
||
1101 |
1169 |
uint16_t *dst = ctx->frm0 + cx + cy * ctx->pitch; |
|
1102 |
|||
1103 |
✓✓ | 1169 |
if (block_size == 2) { |
1104 |
✗✓ | 4 |
if (bytestream2_get_bytes_left(&ctx->gb) < 8) |
1105 |
return AVERROR_INVALIDDATA; |
||
1106 |
|||
1107 |
4 |
dst[0] = bytestream2_get_le16u(&ctx->gb); |
|
1108 |
4 |
dst[1] = bytestream2_get_le16u(&ctx->gb); |
|
1109 |
4 |
dst[pitch] = bytestream2_get_le16u(&ctx->gb); |
|
1110 |
4 |
dst[pitch + 1] = bytestream2_get_le16u(&ctx->gb); |
|
1111 |
} else { |
||
1112 |
uint16_t fgcolor, bgcolor; |
||
1113 |
int glyph; |
||
1114 |
|||
1115 |
✗✓ | 1165 |
if (bytestream2_get_bytes_left(&ctx->gb) < 5) |
1116 |
return AVERROR_INVALIDDATA; |
||
1117 |
|||
1118 |
1165 |
glyph = bytestream2_get_byteu(&ctx->gb); |
|
1119 |
1165 |
bgcolor = bytestream2_get_le16u(&ctx->gb); |
|
1120 |
1165 |
fgcolor = bytestream2_get_le16u(&ctx->gb); |
|
1121 |
|||
1122 |
1165 |
draw_glyph(ctx, dst, glyph, fgcolor, bgcolor, block_size, pitch); |
|
1123 |
} |
||
1124 |
1169 |
return 0; |
|
1125 |
} |
||
1126 |
|||
1127 |
30376 |
static int good_mvec(SANMVideoContext *ctx, int cx, int cy, int mx, int my, |
|
1128 |
int block_size) |
||
1129 |
{ |
||
1130 |
30376 |
int start_pos = cx + mx + (cy + my) * ctx->pitch; |
|
1131 |
30376 |
int end_pos = start_pos + (block_size - 1) * (ctx->pitch + 1); |
|
1132 |
|||
1133 |
✓✗✓✗ |
30376 |
int good = start_pos >= 0 && end_pos < (ctx->buf_size >> 1); |
1134 |
|||
1135 |
✗✓ | 30376 |
if (!good) |
1136 |
av_log(ctx->avctx, AV_LOG_ERROR, |
||
1137 |
"Ignoring invalid motion vector (%i, %i)->(%u, %u), block size = %u\n", |
||
1138 |
cx + mx, cy + my, cx, cy, block_size); |
||
1139 |
|||
1140 |
30376 |
return good; |
|
1141 |
} |
||
1142 |
|||
1143 |
71636 |
static int codec2subblock(SANMVideoContext *ctx, int cx, int cy, int blk_size) |
|
1144 |
{ |
||
1145 |
int16_t mx, my, index; |
||
1146 |
int opcode; |
||
1147 |
|||
1148 |
✓✓ | 71636 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
1149 |
1 |
return AVERROR_INVALIDDATA; |
|
1150 |
|||
1151 |
71635 |
opcode = bytestream2_get_byteu(&ctx->gb); |
|
1152 |
|||
1153 |
✓✓✓✓ ✓✓✓✓ ✓ |
71635 |
switch (opcode) { |
1154 |
28212 |
default: |
|
1155 |
28212 |
mx = motion_vectors[opcode][0]; |
|
1156 |
28212 |
my = motion_vectors[opcode][1]; |
|
1157 |
|||
1158 |
✓✗ | 28212 |
if (good_mvec(ctx, cx, cy, mx, my, blk_size)) { |
1159 |
28212 |
copy_block(ctx->frm0 + cx + ctx->pitch * cy, |
|
1160 |
28212 |
ctx->frm2 + cx + mx + ctx->pitch * (cy + my), |
|
1161 |
blk_size, ctx->pitch); |
||
1162 |
} |
||
1163 |
28212 |
break; |
|
1164 |
2164 |
case 0xF5: |
|
1165 |
✗✓ | 2164 |
if (bytestream2_get_bytes_left(&ctx->gb) < 2) |
1166 |
return AVERROR_INVALIDDATA; |
||
1167 |
2164 |
index = bytestream2_get_le16u(&ctx->gb); |
|
1168 |
|||
1169 |
2164 |
mx = index % ctx->width; |
|
1170 |
2164 |
my = index / ctx->width; |
|
1171 |
|||
1172 |
✓✗ | 2164 |
if (good_mvec(ctx, cx, cy, mx, my, blk_size)) { |
1173 |
2164 |
copy_block(ctx->frm0 + cx + ctx->pitch * cy, |
|
1174 |
2164 |
ctx->frm2 + cx + mx + ctx->pitch * (cy + my), |
|
1175 |
blk_size, ctx->pitch); |
||
1176 |
} |
||
1177 |
2164 |
break; |
|
1178 |
12588 |
case 0xF6: |
|
1179 |
12588 |
copy_block(ctx->frm0 + cx + ctx->pitch * cy, |
|
1180 |
12588 |
ctx->frm1 + cx + ctx->pitch * cy, |
|
1181 |
blk_size, ctx->pitch); |
||
1182 |
12588 |
break; |
|
1183 |
8029 |
case 0xF7: |
|
1184 |
8029 |
opcode_0xf7(ctx, cx, cy, blk_size, ctx->pitch); |
|
1185 |
8029 |
break; |
|
1186 |
|||
1187 |
1169 |
case 0xF8: |
|
1188 |
1169 |
opcode_0xf8(ctx, cx, cy, blk_size, ctx->pitch); |
|
1189 |
1169 |
break; |
|
1190 |
315 |
case 0xF9: |
|
1191 |
case 0xFA: |
||
1192 |
case 0xFB: |
||
1193 |
case 0xFC: |
||
1194 |
315 |
fill_block(ctx->frm0 + cx + cy * ctx->pitch, |
|
1195 |
315 |
ctx->small_codebook[opcode - 0xf9], blk_size, ctx->pitch); |
|
1196 |
315 |
break; |
|
1197 |
5496 |
case 0xFD: |
|
1198 |
✗✓ | 5496 |
if (bytestream2_get_bytes_left(&ctx->gb) < 1) |
1199 |
return AVERROR_INVALIDDATA; |
||
1200 |
10992 |
fill_block(ctx->frm0 + cx + cy * ctx->pitch, |
|
1201 |
5496 |
ctx->codebook[bytestream2_get_byteu(&ctx->gb)], blk_size, ctx->pitch); |
|
1202 |
5496 |
break; |
|
1203 |
2102 |
case 0xFE: |
|
1204 |
✗✓ | 2102 |
if (bytestream2_get_bytes_left(&ctx->gb) < 2) |
1205 |
return AVERROR_INVALIDDATA; |
||
1206 |
2102 |
fill_block(ctx->frm0 + cx + cy * ctx->pitch, |
|
1207 |
2102 |
bytestream2_get_le16u(&ctx->gb), blk_size, ctx->pitch); |
|
1208 |
2102 |
break; |
|
1209 |
11560 |
case 0xFF: |
|
1210 |
✗✓ | 11560 |
if (blk_size == 2) { |
1211 |
opcode_0xf8(ctx, cx, cy, blk_size, ctx->pitch); |
||
1212 |
} else { |
||
1213 |
11560 |
blk_size >>= 1; |
|
1214 |
✗✓ | 11560 |
if (codec2subblock(ctx, cx, cy, blk_size)) |
1215 |
return AVERROR_INVALIDDATA; |
||
1216 |
✗✓ | 11560 |
if (codec2subblock(ctx, cx + blk_size, cy, blk_size)) |
1217 |
return AVERROR_INVALIDDATA; |
||
1218 |
✗✓ | 11560 |
if (codec2subblock(ctx, cx, cy + blk_size, blk_size)) |
1219 |
return AVERROR_INVALIDDATA; |
||
1220 |
✗✓ | 11560 |
if (codec2subblock(ctx, cx + blk_size, cy + blk_size, blk_size)) |
1221 |
return AVERROR_INVALIDDATA; |
||
1222 |
} |
||
1223 |
11560 |
break; |
|
1224 |
} |
||
1225 |
71635 |
return 0; |
|
1226 |
} |
||
1227 |
|||
1228 |
6 |
static int decode_2(SANMVideoContext *ctx) |
|
1229 |
{ |
||
1230 |
int cx, cy, ret; |
||
1231 |
|||
1232 |
✓✓ | 323 |
for (cy = 0; cy < ctx->aligned_height; cy += 8) |
1233 |
✓✓ | 25713 |
for (cx = 0; cx < ctx->aligned_width; cx += 8) |
1234 |
✓✓ | 25396 |
if (ret = codec2subblock(ctx, cx, cy, 8)) |
1235 |
1 |
return ret; |
|
1236 |
|||
1237 |
5 |
return 0; |
|
1238 |
} |
||
1239 |
|||
1240 |
static int decode_3(SANMVideoContext *ctx) |
||
1241 |
{ |
||
1242 |
memcpy(ctx->frm0, ctx->frm2, ctx->frm2_size); |
||
1243 |
return 0; |
||
1244 |
} |
||
1245 |
|||
1246 |
9 |
static int decode_4(SANMVideoContext *ctx) |
|
1247 |
{ |
||
1248 |
9 |
memcpy(ctx->frm0, ctx->frm1, ctx->frm1_size); |
|
1249 |
9 |
return 0; |
|
1250 |
} |
||
1251 |
|||
1252 |
1 |
static int decode_5(SANMVideoContext *ctx) |
|
1253 |
{ |
||
1254 |
#if HAVE_BIGENDIAN |
||
1255 |
uint16_t *frm; |
||
1256 |
int npixels; |
||
1257 |
#endif |
||
1258 |
1 |
uint8_t *dst = (uint8_t*)ctx->frm0; |
|
1259 |
|||
1260 |
✗✓ | 1 |
if (rle_decode(ctx, dst, ctx->buf_size)) |
1261 |
return AVERROR_INVALIDDATA; |
||
1262 |
|||
1263 |
#if HAVE_BIGENDIAN |
||
1264 |
npixels = ctx->npixels; |
||
1265 |
frm = ctx->frm0; |
||
1266 |
while (npixels--) { |
||
1267 |
*frm = av_bswap16(*frm); |
||
1268 |
frm++; |
||
1269 |
} |
||
1270 |
#endif |
||
1271 |
|||
1272 |
1 |
return 0; |
|
1273 |
} |
||
1274 |
|||
1275 |
static int decode_6(SANMVideoContext *ctx) |
||
1276 |
{ |
||
1277 |
int npixels = ctx->npixels; |
||
1278 |
uint16_t *frm = ctx->frm0; |
||
1279 |
|||
1280 |
if (bytestream2_get_bytes_left(&ctx->gb) < npixels) { |
||
1281 |
av_log(ctx->avctx, AV_LOG_ERROR, "Insufficient data for frame.\n"); |
||
1282 |
return AVERROR_INVALIDDATA; |
||
1283 |
} |
||
1284 |
while (npixels--) |
||
1285 |
*frm++ = ctx->codebook[bytestream2_get_byteu(&ctx->gb)]; |
||
1286 |
|||
1287 |
return 0; |
||
1288 |
} |
||
1289 |
|||
1290 |
static int decode_8(SANMVideoContext *ctx) |
||
1291 |
{ |
||
1292 |
uint16_t *pdest = ctx->frm0; |
||
1293 |
uint8_t *rsrc; |
||
1294 |
long npixels = ctx->npixels; |
||
1295 |
|||
1296 |
av_fast_malloc(&ctx->rle_buf, &ctx->rle_buf_size, npixels); |
||
1297 |
if (!ctx->rle_buf) { |
||
1298 |
av_log(ctx->avctx, AV_LOG_ERROR, "RLE buffer allocation failed.\n"); |
||
1299 |
return AVERROR(ENOMEM); |
||
1300 |
} |
||
1301 |
rsrc = ctx->rle_buf; |
||
1302 |
|||
1303 |
if (rle_decode(ctx, rsrc, npixels)) |
||
1304 |
return AVERROR_INVALIDDATA; |
||
1305 |
|||
1306 |
while (npixels--) |
||
1307 |
*pdest++ = ctx->codebook[*rsrc++]; |
||
1308 |
|||
1309 |
return 0; |
||
1310 |
} |
||
1311 |
|||
1312 |
typedef int (*frm_decoder)(SANMVideoContext *ctx); |
||
1313 |
|||
1314 |
static const frm_decoder v1_decoders[] = { |
||
1315 |
decode_0, decode_nop, decode_2, decode_3, decode_4, decode_5, |
||
1316 |
decode_6, decode_nop, decode_8 |
||
1317 |
}; |
||
1318 |
|||
1319 |
16 |
static int read_frame_header(SANMVideoContext *ctx, SANMFrameHeader *hdr) |
|
1320 |
{ |
||
1321 |
int i, ret; |
||
1322 |
|||
1323 |
✗✓ | 16 |
if ((ret = bytestream2_get_bytes_left(&ctx->gb)) < 560) { |
1324 |
av_log(ctx->avctx, AV_LOG_ERROR, "Input frame too short (%d bytes).\n", |
||
1325 |
ret); |
||
1326 |
return AVERROR_INVALIDDATA; |
||
1327 |
} |
||
1328 |
16 |
bytestream2_skip(&ctx->gb, 8); // skip pad |
|
1329 |
|||
1330 |
16 |
hdr->width = bytestream2_get_le32u(&ctx->gb); |
|
1331 |
16 |
hdr->height = bytestream2_get_le32u(&ctx->gb); |
|
1332 |
|||
1333 |
✓✗✗✓ |
16 |
if (hdr->width != ctx->width || hdr->height != ctx->height) { |
1334 |
avpriv_report_missing_feature(ctx->avctx, "Variable size frames"); |
||
1335 |
return AVERROR_PATCHWELCOME; |
||
1336 |
} |
||
1337 |
|||
1338 |
16 |
hdr->seq_num = bytestream2_get_le16u(&ctx->gb); |
|
1339 |
16 |
hdr->codec = bytestream2_get_byteu(&ctx->gb); |
|
1340 |
16 |
hdr->rotate_code = bytestream2_get_byteu(&ctx->gb); |
|
1341 |
|||
1342 |
16 |
bytestream2_skip(&ctx->gb, 4); // skip pad |
|
1343 |
|||
1344 |
✓✓ | 80 |
for (i = 0; i < 4; i++) |
1345 |
64 |
ctx->small_codebook[i] = bytestream2_get_le16u(&ctx->gb); |
|
1346 |
16 |
hdr->bg_color = bytestream2_get_le16u(&ctx->gb); |
|
1347 |
|||
1348 |
16 |
bytestream2_skip(&ctx->gb, 2); // skip pad |
|
1349 |
|||
1350 |
16 |
hdr->rle_output_size = bytestream2_get_le32u(&ctx->gb); |
|
1351 |
✓✓ | 4112 |
for (i = 0; i < 256; i++) |
1352 |
4096 |
ctx->codebook[i] = bytestream2_get_le16u(&ctx->gb); |
|
1353 |
|||
1354 |
16 |
bytestream2_skip(&ctx->gb, 8); // skip pad |
|
1355 |
|||
1356 |
16 |
return 0; |
|
1357 |
} |
||
1358 |
|||
1359 |
2 |
static void fill_frame(uint16_t *pbuf, int buf_size, uint16_t color) |
|
1360 |
{ |
||
1361 |
✓✗ | 2 |
if (buf_size--) { |
1362 |
2 |
*pbuf++ = color; |
|
1363 |
2 |
av_memcpy_backptr((uint8_t*)pbuf, 2, 2*buf_size); |
|
1364 |
} |
||
1365 |
2 |
} |
|
1366 |
|||
1367 |
15 |
static int copy_output(SANMVideoContext *ctx, SANMFrameHeader *hdr) |
|
1368 |
{ |
||
1369 |
uint8_t *dst; |
||
1370 |
15 |
const uint8_t *src = (uint8_t*) ctx->frm0; |
|
1371 |
15 |
int ret, height = ctx->height; |
|
1372 |
✓✗ | 15 |
ptrdiff_t dstpitch, srcpitch = ctx->pitch * (hdr ? sizeof(ctx->frm0[0]) : 1); |
1373 |
|||
1374 |
✗✓ | 15 |
if ((ret = ff_get_buffer(ctx->avctx, ctx->frame, 0)) < 0) |
1375 |
return ret; |
||
1376 |
|||
1377 |
15 |
dst = ctx->frame->data[0]; |
|
1378 |
15 |
dstpitch = ctx->frame->linesize[0]; |
|
1379 |
|||
1380 |
✓✓ | 7215 |
while (height--) { |
1381 |
7200 |
memcpy(dst, src, srcpitch); |
|
1382 |
7200 |
src += srcpitch; |
|
1383 |
7200 |
dst += dstpitch; |
|
1384 |
} |
||
1385 |
|||
1386 |
15 |
return 0; |
|
1387 |
} |
||
1388 |
|||
1389 |
16 |
static int decode_frame(AVCodecContext *avctx, void *data, |
|
1390 |
int *got_frame_ptr, AVPacket *pkt) |
||
1391 |
{ |
||
1392 |
16 |
SANMVideoContext *ctx = avctx->priv_data; |
|
1393 |
int i, ret; |
||
1394 |
|||
1395 |
16 |
ctx->frame = data; |
|
1396 |
16 |
bytestream2_init(&ctx->gb, pkt->data, pkt->size); |
|
1397 |
|||
1398 |
✗✓ | 16 |
if (!ctx->version) { |
1399 |
int to_store = 0; |
||
1400 |
|||
1401 |
while (bytestream2_get_bytes_left(&ctx->gb) >= 8) { |
||
1402 |
uint32_t sig, size; |
||
1403 |
int pos; |
||
1404 |
|||
1405 |
sig = bytestream2_get_be32u(&ctx->gb); |
||
1406 |
size = bytestream2_get_be32u(&ctx->gb); |
||
1407 |
pos = bytestream2_tell(&ctx->gb); |
||
1408 |
|||
1409 |
if (bytestream2_get_bytes_left(&ctx->gb) < size) { |
||
1410 |
av_log(avctx, AV_LOG_ERROR, "Incorrect chunk size %"PRIu32".\n", size); |
||
1411 |
break; |
||
1412 |
} |
||
1413 |
switch (sig) { |
||
1414 |
case MKBETAG('N', 'P', 'A', 'L'): |
||
1415 |
if (size != PALETTE_SIZE * 3) { |
||
1416 |
av_log(avctx, AV_LOG_ERROR, |
||
1417 |
"Incorrect palette block size %"PRIu32".\n", size); |
||
1418 |
return AVERROR_INVALIDDATA; |
||
1419 |
} |
||
1420 |
for (i = 0; i < PALETTE_SIZE; i++) |
||
1421 |
ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb); |
||
1422 |
break; |
||
1423 |
case MKBETAG('F', 'O', 'B', 'J'): |
||
1424 |
if (size < 16) |
||
1425 |
return AVERROR_INVALIDDATA; |
||
1426 |
if (ret = process_frame_obj(ctx)) |
||
1427 |
return ret; |
||
1428 |
break; |
||
1429 |
case MKBETAG('X', 'P', 'A', 'L'): |
||
1430 |
if (size == 6 || size == 4) { |
||
1431 |
uint8_t tmp[3]; |
||
1432 |
int j; |
||
1433 |
|||
1434 |
for (i = 0; i < PALETTE_SIZE; i++) { |
||
1435 |
for (j = 0; j < 3; j++) { |
||
1436 |
int t = (ctx->pal[i] >> (16 - j * 8)) & 0xFF; |
||
1437 |
tmp[j] = av_clip_uint8((t * 129 + ctx->delta_pal[i * 3 + j]) >> 7); |
||
1438 |
} |
||
1439 |
ctx->pal[i] = 0xFFU << 24 | AV_RB24(tmp); |
||
1440 |
} |
||
1441 |
} else { |
||
1442 |
if (size < PALETTE_DELTA * 2 + 4) { |
||
1443 |
av_log(avctx, AV_LOG_ERROR, |
||
1444 |
"Incorrect palette change block size %"PRIu32".\n", |
||
1445 |
size); |
||
1446 |
return AVERROR_INVALIDDATA; |
||
1447 |
} |
||
1448 |
bytestream2_skipu(&ctx->gb, 4); |
||
1449 |
for (i = 0; i < PALETTE_DELTA; i++) |
||
1450 |
ctx->delta_pal[i] = bytestream2_get_le16u(&ctx->gb); |
||
1451 |
if (size >= PALETTE_DELTA * 5 + 4) { |
||
1452 |
for (i = 0; i < PALETTE_SIZE; i++) |
||
1453 |
ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb); |
||
1454 |
} else { |
||
1455 |
memset(ctx->pal, 0, sizeof(ctx->pal)); |
||
1456 |
} |
||
1457 |
} |
||
1458 |
break; |
||
1459 |
case MKBETAG('S', 'T', 'O', 'R'): |
||
1460 |
to_store = 1; |
||
1461 |
break; |
||
1462 |
case MKBETAG('F', 'T', 'C', 'H'): |
||
1463 |
memcpy(ctx->frm0, ctx->stored_frame, ctx->buf_size); |
||
1464 |
break; |
||
1465 |
default: |
||
1466 |
bytestream2_skip(&ctx->gb, size); |
||
1467 |
av_log(avctx, AV_LOG_DEBUG, |
||
1468 |
"Unknown/unsupported chunk %"PRIx32".\n", sig); |
||
1469 |
break; |
||
1470 |
} |
||
1471 |
|||
1472 |
bytestream2_seek(&ctx->gb, pos + size, SEEK_SET); |
||
1473 |
if (size & 1) |
||
1474 |
bytestream2_skip(&ctx->gb, 1); |
||
1475 |
} |
||
1476 |
if (to_store) |
||
1477 |
memcpy(ctx->stored_frame, ctx->frm0, ctx->buf_size); |
||
1478 |
if ((ret = copy_output(ctx, NULL))) |
||
1479 |
return ret; |
||
1480 |
memcpy(ctx->frame->data[1], ctx->pal, 1024); |
||
1481 |
} else { |
||
1482 |
SANMFrameHeader header; |
||
1483 |
|||
1484 |
✗✓ | 16 |
if ((ret = read_frame_header(ctx, &header))) |
1485 |
1 |
return ret; |
|
1486 |
|||
1487 |
16 |
ctx->rotate_code = header.rotate_code; |
|
1488 |
✓✓ | 16 |
if ((ctx->frame->key_frame = !header.seq_num)) { |
1489 |
1 |
ctx->frame->pict_type = AV_PICTURE_TYPE_I; |
|
1490 |
1 |
fill_frame(ctx->frm1, ctx->npixels, header.bg_color); |
|
1491 |
1 |
fill_frame(ctx->frm2, ctx->npixels, header.bg_color); |
|
1492 |
} else { |
||
1493 |
15 |
ctx->frame->pict_type = AV_PICTURE_TYPE_P; |
|
1494 |
} |
||
1495 |
|||
1496 |
✓✗ | 16 |
if (header.codec < FF_ARRAY_ELEMS(v1_decoders)) { |
1497 |
✓✓ | 16 |
if ((ret = v1_decoders[header.codec](ctx))) { |
1498 |
1 |
av_log(avctx, AV_LOG_ERROR, |
|
1499 |
"Subcodec %d: error decoding frame.\n", header.codec); |
||
1500 |
1 |
return ret; |
|
1501 |
} |
||
1502 |
} else { |
||
1503 |
avpriv_request_sample(avctx, "Subcodec %d", header.codec); |
||
1504 |
return AVERROR_PATCHWELCOME; |
||
1505 |
} |
||
1506 |
|||
1507 |
✗✓ | 15 |
if ((ret = copy_output(ctx, &header))) |
1508 |
return ret; |
||
1509 |
} |
||
1510 |
✓✓ | 15 |
if (ctx->rotate_code) |
1511 |
9 |
rotate_bufs(ctx, ctx->rotate_code); |
|
1512 |
|||
1513 |
15 |
*got_frame_ptr = 1; |
|
1514 |
|||
1515 |
15 |
return pkt->size; |
|
1516 |
} |
||
1517 |
|||
1518 |
AVCodec ff_sanm_decoder = { |
||
1519 |
.name = "sanm", |
||
1520 |
.long_name = NULL_IF_CONFIG_SMALL("LucasArts SANM/Smush video"), |
||
1521 |
.type = AVMEDIA_TYPE_VIDEO, |
||
1522 |
.id = AV_CODEC_ID_SANM, |
||
1523 |
.priv_data_size = sizeof(SANMVideoContext), |
||
1524 |
.init = decode_init, |
||
1525 |
.close = decode_end, |
||
1526 |
.decode = decode_frame, |
||
1527 |
.capabilities = AV_CODEC_CAP_DR1, |
||
1528 |
}; |
| Generated by: GCOVR (Version 4.2) |