ffmpeg / libavcodec / ffv1.c @ cbabccc3
History | View | Annotate | Download (36.8 KB)
| 1 |
/*
|
|---|---|
| 2 |
* FFV1 codec for libavcodec
|
| 3 |
*
|
| 4 |
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
|
| 5 |
*
|
| 6 |
* This file is part of FFmpeg.
|
| 7 |
*
|
| 8 |
* FFmpeg is free software; you can redistribute it and/or
|
| 9 |
* modify it under the terms of the GNU Lesser General Public
|
| 10 |
* License as published by the Free Software Foundation; either
|
| 11 |
* version 2.1 of the License, or (at your option) any later version.
|
| 12 |
*
|
| 13 |
* FFmpeg is distributed in the hope that it will be useful,
|
| 14 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| 16 |
* Lesser General Public License for more details.
|
| 17 |
*
|
| 18 |
* You should have received a copy of the GNU Lesser General Public
|
| 19 |
* License along with FFmpeg; if not, write to the Free Software
|
| 20 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
| 21 |
*/
|
| 22 |
|
| 23 |
/**
|
| 24 |
* @file
|
| 25 |
* FF Video Codec 1 (a lossless codec)
|
| 26 |
*/
|
| 27 |
|
| 28 |
#include "avcodec.h" |
| 29 |
#include "get_bits.h" |
| 30 |
#include "put_bits.h" |
| 31 |
#include "dsputil.h" |
| 32 |
#include "rangecoder.h" |
| 33 |
#include "golomb.h" |
| 34 |
#include "mathops.h" |
| 35 |
|
| 36 |
#define MAX_PLANES 4 |
| 37 |
#define CONTEXT_SIZE 32 |
| 38 |
|
| 39 |
extern const uint8_t ff_log2_run[32]; |
| 40 |
|
| 41 |
static const int8_t quant3[256]={ |
| 42 |
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 43 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 44 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 45 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 46 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 47 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 48 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 49 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 50 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 51 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 52 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 53 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 54 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 55 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 56 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 57 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0, |
| 58 |
}; |
| 59 |
|
| 60 |
static const int8_t quant5_10bit[256]={ |
| 61 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, |
| 62 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 63 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 64 |
1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 65 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 66 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 67 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 68 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 69 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 70 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 71 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 72 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 73 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1, |
| 74 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 75 |
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, |
| 76 |
-1,-1,-1,-1,-1,-1,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0, |
| 77 |
}; |
| 78 |
|
| 79 |
static const int8_t quant5[256]={ |
| 80 |
0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 81 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 82 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 83 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 84 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 85 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 86 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 87 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 88 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 89 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 90 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 91 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 92 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 93 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 94 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 95 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1, |
| 96 |
}; |
| 97 |
static const int8_t quant7[256]={ |
| 98 |
0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 99 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
| 100 |
2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, |
| 101 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 102 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 103 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 104 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 105 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 106 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
| 107 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
| 108 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
| 109 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
| 110 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
| 111 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2, |
| 112 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 113 |
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1, |
| 114 |
}; |
| 115 |
static const int8_t quant9[256]={ |
| 116 |
0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 117 |
3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 118 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 119 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 120 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 121 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 122 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 123 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 124 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 125 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 126 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 127 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 128 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 129 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 130 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3, |
| 131 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1, |
| 132 |
}; |
| 133 |
static const int8_t quant9_10bit[256]={ |
| 134 |
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, |
| 135 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, |
| 136 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
| 137 |
3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, |
| 138 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 139 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 140 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 141 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 142 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 143 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 144 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 145 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 146 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3, |
| 147 |
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3, |
| 148 |
-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2, |
| 149 |
-2,-2,-2,-2,-1,-1,-1,-1,-1,-1,-1,-1,-0,-0,-0,-0, |
| 150 |
}; |
| 151 |
|
| 152 |
static const int8_t quant11[256]={ |
| 153 |
0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, |
| 154 |
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
| 155 |
4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 156 |
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 157 |
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 158 |
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 159 |
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 160 |
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 161 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 162 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 163 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 164 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 165 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 166 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4, |
| 167 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4, |
| 168 |
-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1, |
| 169 |
}; |
| 170 |
static const int8_t quant13[256]={ |
| 171 |
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, |
| 172 |
4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 173 |
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, |
| 174 |
5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 175 |
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 176 |
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 177 |
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 178 |
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, |
| 179 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 180 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 181 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 182 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6, |
| 183 |
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5, |
| 184 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 185 |
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5, |
| 186 |
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1, |
| 187 |
}; |
| 188 |
|
| 189 |
static const uint8_t ver2_state[256]= { |
| 190 |
0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49, |
| 191 |
59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39, |
| 192 |
40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52, |
| 193 |
53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69, |
| 194 |
87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97, |
| 195 |
85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98, |
| 196 |
105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125, |
| 197 |
115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129, |
| 198 |
165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148, |
| 199 |
147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160, |
| 200 |
172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178, |
| 201 |
175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196, |
| 202 |
197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214, |
| 203 |
209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225, |
| 204 |
226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242, |
| 205 |
241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255, |
| 206 |
}; |
| 207 |
|
| 208 |
typedef struct VlcState{ |
| 209 |
int16_t drift; |
| 210 |
uint16_t error_sum; |
| 211 |
int8_t bias; |
| 212 |
uint8_t count; |
| 213 |
} VlcState; |
| 214 |
|
| 215 |
typedef struct PlaneContext{ |
| 216 |
int context_count;
|
| 217 |
uint8_t (*state)[CONTEXT_SIZE]; |
| 218 |
VlcState *vlc_state; |
| 219 |
uint8_t interlace_bit_state[2];
|
| 220 |
} PlaneContext; |
| 221 |
|
| 222 |
typedef struct FFV1Context{ |
| 223 |
AVCodecContext *avctx; |
| 224 |
RangeCoder c; |
| 225 |
GetBitContext gb; |
| 226 |
PutBitContext pb; |
| 227 |
int version;
|
| 228 |
int width, height;
|
| 229 |
int chroma_h_shift, chroma_v_shift;
|
| 230 |
int flags;
|
| 231 |
int picture_number;
|
| 232 |
AVFrame picture; |
| 233 |
int plane_count;
|
| 234 |
int ac; ///< 1=range coder <-> 0=golomb rice |
| 235 |
PlaneContext plane[MAX_PLANES]; |
| 236 |
int16_t quant_table[5][256]; |
| 237 |
uint8_t state_transition[256];
|
| 238 |
int run_index;
|
| 239 |
int colorspace;
|
| 240 |
int_fast16_t *sample_buffer; |
| 241 |
|
| 242 |
DSPContext dsp; |
| 243 |
}FFV1Context; |
| 244 |
|
| 245 |
static av_always_inline int fold(int diff, int bits){ |
| 246 |
if(bits==8) |
| 247 |
diff= (int8_t)diff; |
| 248 |
else{
|
| 249 |
diff+= 1<<(bits-1); |
| 250 |
diff&=(1<<bits)-1; |
| 251 |
diff-= 1<<(bits-1); |
| 252 |
} |
| 253 |
|
| 254 |
return diff;
|
| 255 |
} |
| 256 |
|
| 257 |
static inline int predict(int_fast16_t *src, int_fast16_t *last){ |
| 258 |
const int LT= last[-1]; |
| 259 |
const int T= last[ 0]; |
| 260 |
const int L = src[-1]; |
| 261 |
|
| 262 |
return mid_pred(L, L + T - LT, T);
|
| 263 |
} |
| 264 |
|
| 265 |
static inline int get_context(FFV1Context *f, int_fast16_t *src, int_fast16_t *last, int_fast16_t *last2){ |
| 266 |
const int LT= last[-1]; |
| 267 |
const int T= last[ 0]; |
| 268 |
const int RT= last[ 1]; |
| 269 |
const int L = src[-1]; |
| 270 |
|
| 271 |
if(f->quant_table[3][127]){ |
| 272 |
const int TT= last2[0]; |
| 273 |
const int LL= src[-2]; |
| 274 |
return f->quant_table[0][(L-LT) & 0xFF] + f->quant_table[1][(LT-T) & 0xFF] + f->quant_table[2][(T-RT) & 0xFF] |
| 275 |
+f->quant_table[3][(LL-L) & 0xFF] + f->quant_table[4][(TT-T) & 0xFF]; |
| 276 |
}else
|
| 277 |
return f->quant_table[0][(L-LT) & 0xFF] + f->quant_table[1][(LT-T) & 0xFF] + f->quant_table[2][(T-RT) & 0xFF]; |
| 278 |
} |
| 279 |
|
| 280 |
static inline void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed){ |
| 281 |
int i;
|
| 282 |
|
| 283 |
if(v){
|
| 284 |
const int a= FFABS(v); |
| 285 |
const int e= av_log2(a); |
| 286 |
put_rac(c, state+0, 0); |
| 287 |
if(e<=9){ |
| 288 |
for(i=0; i<e; i++){ |
| 289 |
put_rac(c, state+1+i, 1); //1..10 |
| 290 |
} |
| 291 |
put_rac(c, state+1+i, 0); |
| 292 |
|
| 293 |
for(i=e-1; i>=0; i--){ |
| 294 |
put_rac(c, state+22+i, (a>>i)&1); //22..31 |
| 295 |
} |
| 296 |
|
| 297 |
if(is_signed)
|
| 298 |
put_rac(c, state+11 + e, v < 0); //11..21 |
| 299 |
}else{
|
| 300 |
for(i=0; i<e; i++){ |
| 301 |
put_rac(c, state+1+FFMIN(i,9), 1); //1..10 |
| 302 |
} |
| 303 |
put_rac(c, state+1+9, 0); |
| 304 |
|
| 305 |
for(i=e-1; i>=0; i--){ |
| 306 |
put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31 |
| 307 |
} |
| 308 |
|
| 309 |
if(is_signed)
|
| 310 |
put_rac(c, state+11 + 10, v < 0); //11..21 |
| 311 |
} |
| 312 |
}else{
|
| 313 |
put_rac(c, state+0, 1); |
| 314 |
} |
| 315 |
} |
| 316 |
|
| 317 |
static void av_noinline put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){ |
| 318 |
put_symbol_inline(c, state, v, is_signed); |
| 319 |
} |
| 320 |
|
| 321 |
static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed){ |
| 322 |
if(get_rac(c, state+0)) |
| 323 |
return 0; |
| 324 |
else{
|
| 325 |
int i, e, a;
|
| 326 |
e= 0;
|
| 327 |
while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10 |
| 328 |
e++; |
| 329 |
} |
| 330 |
|
| 331 |
a= 1;
|
| 332 |
for(i=e-1; i>=0; i--){ |
| 333 |
a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31 |
| 334 |
} |
| 335 |
|
| 336 |
e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21 |
| 337 |
return (a^e)-e;
|
| 338 |
} |
| 339 |
} |
| 340 |
|
| 341 |
static int av_noinline get_symbol(RangeCoder *c, uint8_t *state, int is_signed){ |
| 342 |
return get_symbol_inline(c, state, is_signed);
|
| 343 |
} |
| 344 |
|
| 345 |
static inline void update_vlc_state(VlcState * const state, const int v){ |
| 346 |
int drift= state->drift;
|
| 347 |
int count= state->count;
|
| 348 |
state->error_sum += FFABS(v); |
| 349 |
drift += v; |
| 350 |
|
| 351 |
if(count == 128){ //FIXME variable |
| 352 |
count >>= 1;
|
| 353 |
drift >>= 1;
|
| 354 |
state->error_sum >>= 1;
|
| 355 |
} |
| 356 |
count++; |
| 357 |
|
| 358 |
if(drift <= -count){
|
| 359 |
if(state->bias > -128) state->bias--; |
| 360 |
|
| 361 |
drift += count; |
| 362 |
if(drift <= -count)
|
| 363 |
drift= -count + 1;
|
| 364 |
}else if(drift > 0){ |
| 365 |
if(state->bias < 127) state->bias++; |
| 366 |
|
| 367 |
drift -= count; |
| 368 |
if(drift > 0) |
| 369 |
drift= 0;
|
| 370 |
} |
| 371 |
|
| 372 |
state->drift= drift; |
| 373 |
state->count= count; |
| 374 |
} |
| 375 |
|
| 376 |
static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v, int bits){ |
| 377 |
int i, k, code;
|
| 378 |
//printf("final: %d ", v);
|
| 379 |
v = fold(v - state->bias, bits); |
| 380 |
|
| 381 |
i= state->count; |
| 382 |
k=0;
|
| 383 |
while(i < state->error_sum){ //FIXME optimize |
| 384 |
k++; |
| 385 |
i += i; |
| 386 |
} |
| 387 |
|
| 388 |
assert(k<=8);
|
| 389 |
|
| 390 |
#if 0 // JPEG LS
|
| 391 |
if(k==0 && 2*state->drift <= - state->count) code= v ^ (-1);
|
| 392 |
else code= v;
|
| 393 |
#else
|
| 394 |
code= v ^ ((2*state->drift + state->count)>>31); |
| 395 |
#endif
|
| 396 |
|
| 397 |
//printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k);
|
| 398 |
set_sr_golomb(pb, code, k, 12, bits);
|
| 399 |
|
| 400 |
update_vlc_state(state, v); |
| 401 |
} |
| 402 |
|
| 403 |
static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){ |
| 404 |
int k, i, v, ret;
|
| 405 |
|
| 406 |
i= state->count; |
| 407 |
k=0;
|
| 408 |
while(i < state->error_sum){ //FIXME optimize |
| 409 |
k++; |
| 410 |
i += i; |
| 411 |
} |
| 412 |
|
| 413 |
assert(k<=8);
|
| 414 |
|
| 415 |
v= get_sr_golomb(gb, k, 12, bits);
|
| 416 |
//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);
|
| 417 |
|
| 418 |
#if 0 // JPEG LS
|
| 419 |
if(k==0 && 2*state->drift <= - state->count) v ^= (-1);
|
| 420 |
#else
|
| 421 |
v ^= ((2*state->drift + state->count)>>31); |
| 422 |
#endif
|
| 423 |
|
| 424 |
ret= fold(v + state->bias, bits); |
| 425 |
|
| 426 |
update_vlc_state(state, v); |
| 427 |
//printf("final: %d\n", ret);
|
| 428 |
return ret;
|
| 429 |
} |
| 430 |
|
| 431 |
#if CONFIG_FFV1_ENCODER
|
| 432 |
static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){ |
| 433 |
PlaneContext * const p= &s->plane[plane_index];
|
| 434 |
RangeCoder * const c= &s->c;
|
| 435 |
int x;
|
| 436 |
int run_index= s->run_index;
|
| 437 |
int run_count=0; |
| 438 |
int run_mode=0; |
| 439 |
|
| 440 |
if(s->ac){
|
| 441 |
if(c->bytestream_end - c->bytestream < w*20){ |
| 442 |
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
|
| 443 |
return -1; |
| 444 |
} |
| 445 |
}else{
|
| 446 |
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < w*4){ |
| 447 |
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
|
| 448 |
return -1; |
| 449 |
} |
| 450 |
} |
| 451 |
|
| 452 |
for(x=0; x<w; x++){ |
| 453 |
int diff, context;
|
| 454 |
|
| 455 |
context= get_context(s, sample[0]+x, sample[1]+x, sample[2]+x); |
| 456 |
diff= sample[0][x] - predict(sample[0]+x, sample[1]+x); |
| 457 |
|
| 458 |
if(context < 0){ |
| 459 |
context = -context; |
| 460 |
diff= -diff; |
| 461 |
} |
| 462 |
|
| 463 |
diff= fold(diff, bits); |
| 464 |
|
| 465 |
if(s->ac){
|
| 466 |
put_symbol_inline(c, p->state[context], diff, 1);
|
| 467 |
}else{
|
| 468 |
if(context == 0) run_mode=1; |
| 469 |
|
| 470 |
if(run_mode){
|
| 471 |
|
| 472 |
if(diff){
|
| 473 |
while(run_count >= 1<<ff_log2_run[run_index]){ |
| 474 |
run_count -= 1<<ff_log2_run[run_index];
|
| 475 |
run_index++; |
| 476 |
put_bits(&s->pb, 1, 1); |
| 477 |
} |
| 478 |
|
| 479 |
put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
|
| 480 |
if(run_index) run_index--;
|
| 481 |
run_count=0;
|
| 482 |
run_mode=0;
|
| 483 |
if(diff>0) diff--; |
| 484 |
}else{
|
| 485 |
run_count++; |
| 486 |
} |
| 487 |
} |
| 488 |
|
| 489 |
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)put_bits_count(&s->pb));
|
| 490 |
|
| 491 |
if(run_mode == 0) |
| 492 |
put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits); |
| 493 |
} |
| 494 |
} |
| 495 |
if(run_mode){
|
| 496 |
while(run_count >= 1<<ff_log2_run[run_index]){ |
| 497 |
run_count -= 1<<ff_log2_run[run_index];
|
| 498 |
run_index++; |
| 499 |
put_bits(&s->pb, 1, 1); |
| 500 |
} |
| 501 |
|
| 502 |
if(run_count)
|
| 503 |
put_bits(&s->pb, 1, 1); |
| 504 |
} |
| 505 |
s->run_index= run_index; |
| 506 |
|
| 507 |
return 0; |
| 508 |
} |
| 509 |
|
| 510 |
static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ |
| 511 |
int x,y,i;
|
| 512 |
const int ring_size= s->avctx->context_model ? 3 : 2; |
| 513 |
int_fast16_t *sample[3];
|
| 514 |
s->run_index=0;
|
| 515 |
|
| 516 |
memset(s->sample_buffer, 0, ring_size*(w+6)*sizeof(*s->sample_buffer)); |
| 517 |
|
| 518 |
for(y=0; y<h; y++){ |
| 519 |
for(i=0; i<ring_size; i++) |
| 520 |
sample[i]= s->sample_buffer + (w+6)*((h+i-y)%ring_size) + 3; |
| 521 |
|
| 522 |
sample[0][-1]= sample[1][0 ]; |
| 523 |
sample[1][ w]= sample[1][w-1]; |
| 524 |
//{START_TIMER
|
| 525 |
if(s->avctx->bits_per_raw_sample<=8){ |
| 526 |
for(x=0; x<w; x++){ |
| 527 |
sample[0][x]= src[x + stride*y];
|
| 528 |
} |
| 529 |
encode_line(s, w, sample, plane_index, 8);
|
| 530 |
}else{
|
| 531 |
for(x=0; x<w; x++){ |
| 532 |
sample[0][x]= ((uint16_t*)(src + stride*y))[x] >> (16 - s->avctx->bits_per_raw_sample); |
| 533 |
} |
| 534 |
encode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| 535 |
} |
| 536 |
//STOP_TIMER("encode line")}
|
| 537 |
} |
| 538 |
} |
| 539 |
|
| 540 |
static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ |
| 541 |
int x, y, p, i;
|
| 542 |
const int ring_size= s->avctx->context_model ? 3 : 2; |
| 543 |
int_fast16_t *sample[3][3]; |
| 544 |
s->run_index=0;
|
| 545 |
|
| 546 |
memset(s->sample_buffer, 0, ring_size*3*(w+6)*sizeof(*s->sample_buffer)); |
| 547 |
|
| 548 |
for(y=0; y<h; y++){ |
| 549 |
for(i=0; i<ring_size; i++) |
| 550 |
for(p=0; p<3; p++) |
| 551 |
sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3; |
| 552 |
|
| 553 |
for(x=0; x<w; x++){ |
| 554 |
int v= src[x + stride*y];
|
| 555 |
int b= v&0xFF; |
| 556 |
int g= (v>>8)&0xFF; |
| 557 |
int r= (v>>16)&0xFF; |
| 558 |
|
| 559 |
b -= g; |
| 560 |
r -= g; |
| 561 |
g += (b + r)>>2;
|
| 562 |
b += 0x100;
|
| 563 |
r += 0x100;
|
| 564 |
|
| 565 |
// assert(g>=0 && b>=0 && r>=0);
|
| 566 |
// assert(g<256 && b<512 && r<512);
|
| 567 |
sample[0][0][x]= g; |
| 568 |
sample[1][0][x]= b; |
| 569 |
sample[2][0][x]= r; |
| 570 |
} |
| 571 |
for(p=0; p<3; p++){ |
| 572 |
sample[p][0][-1]= sample[p][1][0 ]; |
| 573 |
sample[p][1][ w]= sample[p][1][w-1]; |
| 574 |
encode_line(s, w, sample[p], FFMIN(p, 1), 9); |
| 575 |
} |
| 576 |
} |
| 577 |
} |
| 578 |
|
| 579 |
static void write_quant_table(RangeCoder *c, int16_t *quant_table){ |
| 580 |
int last=0; |
| 581 |
int i;
|
| 582 |
uint8_t state[CONTEXT_SIZE]; |
| 583 |
memset(state, 128, sizeof(state)); |
| 584 |
|
| 585 |
for(i=1; i<128 ; i++){ |
| 586 |
if(quant_table[i] != quant_table[i-1]){ |
| 587 |
put_symbol(c, state, i-last-1, 0); |
| 588 |
last= i; |
| 589 |
} |
| 590 |
} |
| 591 |
put_symbol(c, state, i-last-1, 0); |
| 592 |
} |
| 593 |
|
| 594 |
static void write_header(FFV1Context *f){ |
| 595 |
uint8_t state[CONTEXT_SIZE]; |
| 596 |
int i;
|
| 597 |
RangeCoder * const c= &f->c;
|
| 598 |
|
| 599 |
memset(state, 128, sizeof(state)); |
| 600 |
|
| 601 |
put_symbol(c, state, f->version, 0);
|
| 602 |
put_symbol(c, state, f->ac, 0);
|
| 603 |
if(f->ac>1){ |
| 604 |
for(i=1; i<256; i++){ |
| 605 |
f->state_transition[i]=ver2_state[i]; |
| 606 |
put_symbol(c, state, ver2_state[i] - c->one_state[i], 1);
|
| 607 |
} |
| 608 |
} |
| 609 |
put_symbol(c, state, f->colorspace, 0); //YUV cs type |
| 610 |
if(f->version>0) |
| 611 |
put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
|
| 612 |
put_rac(c, state, 1); //chroma planes |
| 613 |
put_symbol(c, state, f->chroma_h_shift, 0);
|
| 614 |
put_symbol(c, state, f->chroma_v_shift, 0);
|
| 615 |
put_rac(c, state, 0); //no transparency plane |
| 616 |
|
| 617 |
for(i=0; i<5; i++) |
| 618 |
write_quant_table(c, f->quant_table[i]); |
| 619 |
} |
| 620 |
#endif /* CONFIG_FFV1_ENCODER */ |
| 621 |
|
| 622 |
static av_cold int common_init(AVCodecContext *avctx){ |
| 623 |
FFV1Context *s = avctx->priv_data; |
| 624 |
|
| 625 |
s->avctx= avctx; |
| 626 |
s->flags= avctx->flags; |
| 627 |
|
| 628 |
dsputil_init(&s->dsp, avctx); |
| 629 |
|
| 630 |
s->width = avctx->width; |
| 631 |
s->height= avctx->height; |
| 632 |
|
| 633 |
assert(s->width && s->height); |
| 634 |
|
| 635 |
s->sample_buffer = av_malloc(6 * (s->width+6) * sizeof(*s->sample_buffer)); |
| 636 |
if (!s->sample_buffer)
|
| 637 |
return AVERROR(ENOMEM);
|
| 638 |
|
| 639 |
return 0; |
| 640 |
} |
| 641 |
|
| 642 |
#if CONFIG_FFV1_ENCODER
|
| 643 |
static av_cold int encode_init(AVCodecContext *avctx) |
| 644 |
{
|
| 645 |
FFV1Context *s = avctx->priv_data; |
| 646 |
int i;
|
| 647 |
|
| 648 |
common_init(avctx); |
| 649 |
|
| 650 |
s->version=0;
|
| 651 |
s->ac= avctx->coder_type ? 2:0; |
| 652 |
|
| 653 |
s->plane_count=2;
|
| 654 |
for(i=0; i<256; i++){ |
| 655 |
if(avctx->bits_per_raw_sample <=8){ |
| 656 |
s->quant_table[0][i]= quant11[i];
|
| 657 |
s->quant_table[1][i]= 11*quant11[i]; |
| 658 |
if(avctx->context_model==0){ |
| 659 |
s->quant_table[2][i]= 11*11*quant11[i]; |
| 660 |
s->quant_table[3][i]=
|
| 661 |
s->quant_table[4][i]=0; |
| 662 |
}else{
|
| 663 |
s->quant_table[2][i]= 11*11*quant5 [i]; |
| 664 |
s->quant_table[3][i]= 5*11*11*quant5 [i]; |
| 665 |
s->quant_table[4][i]= 5*5*11*11*quant5 [i]; |
| 666 |
} |
| 667 |
}else{
|
| 668 |
s->quant_table[0][i]= quant9_10bit[i];
|
| 669 |
s->quant_table[1][i]= 11*quant9_10bit[i]; |
| 670 |
if(avctx->context_model==0){ |
| 671 |
s->quant_table[2][i]= 11*11*quant9_10bit[i]; |
| 672 |
s->quant_table[3][i]=
|
| 673 |
s->quant_table[4][i]=0; |
| 674 |
}else{
|
| 675 |
s->quant_table[2][i]= 11*11*quant5_10bit[i]; |
| 676 |
s->quant_table[3][i]= 5*11*11*quant5_10bit[i]; |
| 677 |
s->quant_table[4][i]= 5*5*11*11*quant5_10bit[i]; |
| 678 |
} |
| 679 |
} |
| 680 |
} |
| 681 |
|
| 682 |
for(i=0; i<s->plane_count; i++){ |
| 683 |
PlaneContext * const p= &s->plane[i];
|
| 684 |
|
| 685 |
if(avctx->context_model==0){ |
| 686 |
p->context_count= (11*11*11+1)/2; |
| 687 |
}else{
|
| 688 |
p->context_count= (11*11*5*5*5+1)/2; |
| 689 |
} |
| 690 |
|
| 691 |
if(s->ac){
|
| 692 |
if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t)); |
| 693 |
}else{
|
| 694 |
if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState)); |
| 695 |
} |
| 696 |
} |
| 697 |
|
| 698 |
avctx->coded_frame= &s->picture; |
| 699 |
switch(avctx->pix_fmt){
|
| 700 |
case PIX_FMT_YUV444P16:
|
| 701 |
case PIX_FMT_YUV422P16:
|
| 702 |
case PIX_FMT_YUV420P16:
|
| 703 |
if(avctx->bits_per_raw_sample <=8){ |
| 704 |
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
|
| 705 |
return -1; |
| 706 |
} |
| 707 |
if(!s->ac){
|
| 708 |
av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
|
| 709 |
return -1; |
| 710 |
} |
| 711 |
s->version= 1;
|
| 712 |
case PIX_FMT_YUV444P:
|
| 713 |
case PIX_FMT_YUV422P:
|
| 714 |
case PIX_FMT_YUV420P:
|
| 715 |
case PIX_FMT_YUV411P:
|
| 716 |
case PIX_FMT_YUV410P:
|
| 717 |
s->colorspace= 0;
|
| 718 |
break;
|
| 719 |
case PIX_FMT_RGB32:
|
| 720 |
s->colorspace= 1;
|
| 721 |
break;
|
| 722 |
default:
|
| 723 |
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
|
| 724 |
return -1; |
| 725 |
} |
| 726 |
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); |
| 727 |
|
| 728 |
s->picture_number=0;
|
| 729 |
|
| 730 |
return 0; |
| 731 |
} |
| 732 |
#endif /* CONFIG_FFV1_ENCODER */ |
| 733 |
|
| 734 |
|
| 735 |
static void clear_state(FFV1Context *f){ |
| 736 |
int i, j;
|
| 737 |
|
| 738 |
for(i=0; i<f->plane_count; i++){ |
| 739 |
PlaneContext *p= &f->plane[i]; |
| 740 |
|
| 741 |
p->interlace_bit_state[0]= 128; |
| 742 |
p->interlace_bit_state[1]= 128; |
| 743 |
|
| 744 |
for(j=0; j<p->context_count; j++){ |
| 745 |
if(f->ac){
|
| 746 |
memset(p->state[j], 128, sizeof(uint8_t)*CONTEXT_SIZE); |
| 747 |
}else{
|
| 748 |
p->vlc_state[j].drift= 0;
|
| 749 |
p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2); |
| 750 |
p->vlc_state[j].bias= 0;
|
| 751 |
p->vlc_state[j].count= 1;
|
| 752 |
} |
| 753 |
} |
| 754 |
} |
| 755 |
} |
| 756 |
|
| 757 |
#if CONFIG_FFV1_ENCODER
|
| 758 |
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ |
| 759 |
FFV1Context *f = avctx->priv_data; |
| 760 |
RangeCoder * const c= &f->c;
|
| 761 |
AVFrame *pict = data; |
| 762 |
const int width= f->width; |
| 763 |
const int height= f->height; |
| 764 |
AVFrame * const p= &f->picture;
|
| 765 |
int used_count= 0; |
| 766 |
uint8_t keystate=128;
|
| 767 |
|
| 768 |
ff_init_range_encoder(c, buf, buf_size); |
| 769 |
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| 770 |
|
| 771 |
*p = *pict; |
| 772 |
p->pict_type= FF_I_TYPE; |
| 773 |
|
| 774 |
if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){ |
| 775 |
put_rac(c, &keystate, 1);
|
| 776 |
p->key_frame= 1;
|
| 777 |
write_header(f); |
| 778 |
clear_state(f); |
| 779 |
}else{
|
| 780 |
put_rac(c, &keystate, 0);
|
| 781 |
p->key_frame= 0;
|
| 782 |
} |
| 783 |
|
| 784 |
if(!f->ac){
|
| 785 |
used_count += ff_rac_terminate(c); |
| 786 |
//printf("pos=%d\n", used_count);
|
| 787 |
init_put_bits(&f->pb, buf + used_count, buf_size - used_count); |
| 788 |
}else if (f->ac>1){ |
| 789 |
int i;
|
| 790 |
for(i=1; i<256; i++){ |
| 791 |
c->one_state[i]= f->state_transition[i]; |
| 792 |
c->zero_state[256-i]= 256-c->one_state[i]; |
| 793 |
} |
| 794 |
} |
| 795 |
|
| 796 |
if(f->colorspace==0){ |
| 797 |
const int chroma_width = -((-width )>>f->chroma_h_shift); |
| 798 |
const int chroma_height= -((-height)>>f->chroma_v_shift); |
| 799 |
|
| 800 |
encode_plane(f, p->data[0], width, height, p->linesize[0], 0); |
| 801 |
|
| 802 |
encode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1); |
| 803 |
encode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 1); |
| 804 |
}else{
|
| 805 |
encode_rgb_frame(f, (uint32_t*)(p->data[0]), width, height, p->linesize[0]/4); |
| 806 |
} |
| 807 |
emms_c(); |
| 808 |
|
| 809 |
f->picture_number++; |
| 810 |
|
| 811 |
if(f->ac){
|
| 812 |
return ff_rac_terminate(c);
|
| 813 |
}else{
|
| 814 |
flush_put_bits(&f->pb); //nicer padding FIXME
|
| 815 |
return used_count + (put_bits_count(&f->pb)+7)/8; |
| 816 |
} |
| 817 |
} |
| 818 |
#endif /* CONFIG_FFV1_ENCODER */ |
| 819 |
|
| 820 |
static av_cold int common_end(AVCodecContext *avctx){ |
| 821 |
FFV1Context *s = avctx->priv_data; |
| 822 |
int i;
|
| 823 |
|
| 824 |
for(i=0; i<s->plane_count; i++){ |
| 825 |
PlaneContext *p= &s->plane[i]; |
| 826 |
|
| 827 |
av_freep(&p->state); |
| 828 |
av_freep(&p->vlc_state); |
| 829 |
} |
| 830 |
|
| 831 |
av_freep(&s->sample_buffer); |
| 832 |
|
| 833 |
return 0; |
| 834 |
} |
| 835 |
|
| 836 |
static av_always_inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){ |
| 837 |
PlaneContext * const p= &s->plane[plane_index];
|
| 838 |
RangeCoder * const c= &s->c;
|
| 839 |
int x;
|
| 840 |
int run_count=0; |
| 841 |
int run_mode=0; |
| 842 |
int run_index= s->run_index;
|
| 843 |
|
| 844 |
for(x=0; x<w; x++){ |
| 845 |
int diff, context, sign;
|
| 846 |
|
| 847 |
context= get_context(s, sample[1] + x, sample[0] + x, sample[1] + x); |
| 848 |
if(context < 0){ |
| 849 |
context= -context; |
| 850 |
sign=1;
|
| 851 |
}else
|
| 852 |
sign=0;
|
| 853 |
|
| 854 |
|
| 855 |
if(s->ac){
|
| 856 |
diff= get_symbol_inline(c, p->state[context], 1);
|
| 857 |
}else{
|
| 858 |
if(context == 0 && run_mode==0) run_mode=1; |
| 859 |
|
| 860 |
if(run_mode){
|
| 861 |
if(run_count==0 && run_mode==1){ |
| 862 |
if(get_bits1(&s->gb)){
|
| 863 |
run_count = 1<<ff_log2_run[run_index];
|
| 864 |
if(x + run_count <= w) run_index++;
|
| 865 |
}else{
|
| 866 |
if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);
|
| 867 |
else run_count=0; |
| 868 |
if(run_index) run_index--;
|
| 869 |
run_mode=2;
|
| 870 |
} |
| 871 |
} |
| 872 |
run_count--; |
| 873 |
if(run_count < 0){ |
| 874 |
run_mode=0;
|
| 875 |
run_count=0;
|
| 876 |
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); |
| 877 |
if(diff>=0) diff++; |
| 878 |
}else
|
| 879 |
diff=0;
|
| 880 |
}else
|
| 881 |
diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); |
| 882 |
|
| 883 |
// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));
|
| 884 |
} |
| 885 |
|
| 886 |
if(sign) diff= -diff;
|
| 887 |
|
| 888 |
sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1); |
| 889 |
} |
| 890 |
s->run_index= run_index; |
| 891 |
} |
| 892 |
|
| 893 |
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){ |
| 894 |
int x, y;
|
| 895 |
int_fast16_t *sample[2];
|
| 896 |
sample[0]=s->sample_buffer +3; |
| 897 |
sample[1]=s->sample_buffer+w+6+3; |
| 898 |
|
| 899 |
s->run_index=0;
|
| 900 |
|
| 901 |
memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer)); |
| 902 |
|
| 903 |
for(y=0; y<h; y++){ |
| 904 |
int_fast16_t *temp= sample[0]; //FIXME try a normal buffer |
| 905 |
|
| 906 |
sample[0]= sample[1]; |
| 907 |
sample[1]= temp;
|
| 908 |
|
| 909 |
sample[1][-1]= sample[0][0 ]; |
| 910 |
sample[0][ w]= sample[0][w-1]; |
| 911 |
|
| 912 |
//{START_TIMER
|
| 913 |
if(s->avctx->bits_per_raw_sample <= 8){ |
| 914 |
decode_line(s, w, sample, plane_index, 8);
|
| 915 |
for(x=0; x<w; x++){ |
| 916 |
src[x + stride*y]= sample[1][x];
|
| 917 |
} |
| 918 |
}else{
|
| 919 |
decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| 920 |
for(x=0; x<w; x++){ |
| 921 |
((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample); |
| 922 |
} |
| 923 |
} |
| 924 |
//STOP_TIMER("decode-line")}
|
| 925 |
} |
| 926 |
} |
| 927 |
|
| 928 |
static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){ |
| 929 |
int x, y, p;
|
| 930 |
int_fast16_t *sample[3][2]; |
| 931 |
for(x=0; x<3; x++){ |
| 932 |
sample[x][0] = s->sample_buffer + x*2 *(w+6) + 3; |
| 933 |
sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3; |
| 934 |
} |
| 935 |
|
| 936 |
s->run_index=0;
|
| 937 |
|
| 938 |
memset(s->sample_buffer, 0, 6*(w+6)*sizeof(*s->sample_buffer)); |
| 939 |
|
| 940 |
for(y=0; y<h; y++){ |
| 941 |
for(p=0; p<3; p++){ |
| 942 |
int_fast16_t *temp= sample[p][0]; //FIXME try a normal buffer |
| 943 |
|
| 944 |
sample[p][0]= sample[p][1]; |
| 945 |
sample[p][1]= temp;
|
| 946 |
|
| 947 |
sample[p][1][-1]= sample[p][0][0 ]; |
| 948 |
sample[p][0][ w]= sample[p][0][w-1]; |
| 949 |
decode_line(s, w, sample[p], FFMIN(p, 1), 9); |
| 950 |
} |
| 951 |
for(x=0; x<w; x++){ |
| 952 |
int g= sample[0][1][x]; |
| 953 |
int b= sample[1][1][x]; |
| 954 |
int r= sample[2][1][x]; |
| 955 |
|
| 956 |
// assert(g>=0 && b>=0 && r>=0);
|
| 957 |
// assert(g<256 && b<512 && r<512);
|
| 958 |
|
| 959 |
b -= 0x100;
|
| 960 |
r -= 0x100;
|
| 961 |
g -= (b + r)>>2;
|
| 962 |
b += g; |
| 963 |
r += g; |
| 964 |
|
| 965 |
src[x + stride*y]= b + (g<<8) + (r<<16) + (0xFF<<24); |
| 966 |
} |
| 967 |
} |
| 968 |
} |
| 969 |
|
| 970 |
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){ |
| 971 |
int v;
|
| 972 |
int i=0; |
| 973 |
uint8_t state[CONTEXT_SIZE]; |
| 974 |
|
| 975 |
memset(state, 128, sizeof(state)); |
| 976 |
|
| 977 |
for(v=0; i<128 ; v++){ |
| 978 |
int len= get_symbol(c, state, 0) + 1; |
| 979 |
|
| 980 |
if(len + i > 128) return -1; |
| 981 |
|
| 982 |
while(len--){
|
| 983 |
quant_table[i] = scale*v; |
| 984 |
i++; |
| 985 |
//printf("%2d ",v);
|
| 986 |
//if(i%16==0) printf("\n");
|
| 987 |
} |
| 988 |
} |
| 989 |
|
| 990 |
for(i=1; i<128; i++){ |
| 991 |
quant_table[256-i]= -quant_table[i];
|
| 992 |
} |
| 993 |
quant_table[128]= -quant_table[127]; |
| 994 |
|
| 995 |
return 2*v - 1; |
| 996 |
} |
| 997 |
|
| 998 |
static int read_header(FFV1Context *f){ |
| 999 |
uint8_t state[CONTEXT_SIZE]; |
| 1000 |
int i, context_count;
|
| 1001 |
RangeCoder * const c= &f->c;
|
| 1002 |
|
| 1003 |
memset(state, 128, sizeof(state)); |
| 1004 |
|
| 1005 |
f->version= get_symbol(c, state, 0);
|
| 1006 |
f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
|
| 1007 |
if(f->ac>1){ |
| 1008 |
for(i=1; i<256; i++){ |
| 1009 |
f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
|
| 1010 |
} |
| 1011 |
} |
| 1012 |
f->colorspace= get_symbol(c, state, 0); //YUV cs type |
| 1013 |
if(f->version>0) |
| 1014 |
f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
|
| 1015 |
get_rac(c, state); //no chroma = false
|
| 1016 |
f->chroma_h_shift= get_symbol(c, state, 0);
|
| 1017 |
f->chroma_v_shift= get_symbol(c, state, 0);
|
| 1018 |
get_rac(c, state); //transparency plane
|
| 1019 |
f->plane_count= 2;
|
| 1020 |
|
| 1021 |
if(f->colorspace==0){ |
| 1022 |
if(f->avctx->bits_per_raw_sample<=8){ |
| 1023 |
switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| 1024 |
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break; |
| 1025 |
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break; |
| 1026 |
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break; |
| 1027 |
case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break; |
| 1028 |
case 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break; |
| 1029 |
default:
|
| 1030 |
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
|
| 1031 |
return -1; |
| 1032 |
} |
| 1033 |
}else{
|
| 1034 |
switch(16*f->chroma_h_shift + f->chroma_v_shift){ |
| 1035 |
case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break; |
| 1036 |
case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break; |
| 1037 |
case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break; |
| 1038 |
default:
|
| 1039 |
av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
|
| 1040 |
return -1; |
| 1041 |
} |
| 1042 |
} |
| 1043 |
}else if(f->colorspace==1){ |
| 1044 |
if(f->chroma_h_shift || f->chroma_v_shift){
|
| 1045 |
av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");
|
| 1046 |
return -1; |
| 1047 |
} |
| 1048 |
f->avctx->pix_fmt= PIX_FMT_RGB32; |
| 1049 |
}else{
|
| 1050 |
av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
|
| 1051 |
return -1; |
| 1052 |
} |
| 1053 |
|
| 1054 |
//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);
|
| 1055 |
|
| 1056 |
context_count=1;
|
| 1057 |
for(i=0; i<5; i++){ |
| 1058 |
context_count*= read_quant_table(c, f->quant_table[i], context_count); |
| 1059 |
if(context_count < 0 || context_count > 32768){ |
| 1060 |
av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
|
| 1061 |
return -1; |
| 1062 |
} |
| 1063 |
} |
| 1064 |
context_count= (context_count+1)/2; |
| 1065 |
|
| 1066 |
for(i=0; i<f->plane_count; i++){ |
| 1067 |
PlaneContext * const p= &f->plane[i];
|
| 1068 |
|
| 1069 |
p->context_count= context_count; |
| 1070 |
|
| 1071 |
if(f->ac){
|
| 1072 |
if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t)); |
| 1073 |
}else{
|
| 1074 |
if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState)); |
| 1075 |
} |
| 1076 |
} |
| 1077 |
|
| 1078 |
return 0; |
| 1079 |
} |
| 1080 |
|
| 1081 |
static av_cold int decode_init(AVCodecContext *avctx) |
| 1082 |
{
|
| 1083 |
// FFV1Context *s = avctx->priv_data;
|
| 1084 |
|
| 1085 |
common_init(avctx); |
| 1086 |
|
| 1087 |
return 0; |
| 1088 |
} |
| 1089 |
|
| 1090 |
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){ |
| 1091 |
const uint8_t *buf = avpkt->data;
|
| 1092 |
int buf_size = avpkt->size;
|
| 1093 |
FFV1Context *f = avctx->priv_data; |
| 1094 |
RangeCoder * const c= &f->c;
|
| 1095 |
const int width= f->width; |
| 1096 |
const int height= f->height; |
| 1097 |
AVFrame * const p= &f->picture;
|
| 1098 |
int bytes_read;
|
| 1099 |
uint8_t keystate= 128;
|
| 1100 |
|
| 1101 |
AVFrame *picture = data; |
| 1102 |
|
| 1103 |
ff_init_range_decoder(c, buf, buf_size); |
| 1104 |
ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); |
| 1105 |
|
| 1106 |
|
| 1107 |
p->pict_type= FF_I_TYPE; //FIXME I vs. P
|
| 1108 |
if(get_rac(c, &keystate)){
|
| 1109 |
p->key_frame= 1;
|
| 1110 |
if(read_header(f) < 0) |
| 1111 |
return -1; |
| 1112 |
clear_state(f); |
| 1113 |
}else{
|
| 1114 |
p->key_frame= 0;
|
| 1115 |
} |
| 1116 |
if(f->ac>1){ |
| 1117 |
int i;
|
| 1118 |
for(i=1; i<256; i++){ |
| 1119 |
c->one_state[i]= f->state_transition[i]; |
| 1120 |
c->zero_state[256-i]= 256-c->one_state[i]; |
| 1121 |
} |
| 1122 |
} |
| 1123 |
|
| 1124 |
if(!f->plane[0].state && !f->plane[0].vlc_state) |
| 1125 |
return -1; |
| 1126 |
|
| 1127 |
p->reference= 0;
|
| 1128 |
if(avctx->get_buffer(avctx, p) < 0){ |
| 1129 |
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
|
| 1130 |
return -1; |
| 1131 |
} |
| 1132 |
|
| 1133 |
if(avctx->debug&FF_DEBUG_PICT_INFO)
|
| 1134 |
av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);
|
| 1135 |
|
| 1136 |
if(!f->ac){
|
| 1137 |
bytes_read = c->bytestream - c->bytestream_start - 1;
|
| 1138 |
if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME |
| 1139 |
//printf("pos=%d\n", bytes_read);
|
| 1140 |
init_get_bits(&f->gb, buf + bytes_read, buf_size - bytes_read); |
| 1141 |
} else {
|
| 1142 |
bytes_read = 0; /* avoid warning */ |
| 1143 |
} |
| 1144 |
|
| 1145 |
if(f->colorspace==0){ |
| 1146 |
const int chroma_width = -((-width )>>f->chroma_h_shift); |
| 1147 |
const int chroma_height= -((-height)>>f->chroma_v_shift); |
| 1148 |
decode_plane(f, p->data[0], width, height, p->linesize[0], 0); |
| 1149 |
|
| 1150 |
decode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1); |
| 1151 |
decode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 1); |
| 1152 |
}else{
|
| 1153 |
decode_rgb_frame(f, (uint32_t*)p->data[0], width, height, p->linesize[0]/4); |
| 1154 |
} |
| 1155 |
|
| 1156 |
emms_c(); |
| 1157 |
|
| 1158 |
f->picture_number++; |
| 1159 |
|
| 1160 |
*picture= *p; |
| 1161 |
|
| 1162 |
avctx->release_buffer(avctx, p); //FIXME
|
| 1163 |
|
| 1164 |
*data_size = sizeof(AVFrame);
|
| 1165 |
|
| 1166 |
if(f->ac){
|
| 1167 |
bytes_read= c->bytestream - c->bytestream_start - 1;
|
| 1168 |
if(bytes_read ==0) av_log(f->avctx, AV_LOG_ERROR, "error at end of frame\n"); |
| 1169 |
}else{
|
| 1170 |
bytes_read+= (get_bits_count(&f->gb)+7)/8; |
| 1171 |
} |
| 1172 |
|
| 1173 |
return bytes_read;
|
| 1174 |
} |
| 1175 |
|
| 1176 |
AVCodec ffv1_decoder = {
|
| 1177 |
"ffv1",
|
| 1178 |
AVMEDIA_TYPE_VIDEO, |
| 1179 |
CODEC_ID_FFV1, |
| 1180 |
sizeof(FFV1Context),
|
| 1181 |
decode_init, |
| 1182 |
NULL,
|
| 1183 |
common_end, |
| 1184 |
decode_frame, |
| 1185 |
CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
|
| 1186 |
NULL,
|
| 1187 |
.long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
|
| 1188 |
}; |
| 1189 |
|
| 1190 |
#if CONFIG_FFV1_ENCODER
|
| 1191 |
AVCodec ffv1_encoder = {
|
| 1192 |
"ffv1",
|
| 1193 |
AVMEDIA_TYPE_VIDEO, |
| 1194 |
CODEC_ID_FFV1, |
| 1195 |
sizeof(FFV1Context),
|
| 1196 |
encode_init, |
| 1197 |
encode_frame, |
| 1198 |
common_end, |
| 1199 |
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_NONE}, |
| 1200 |
.long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
|
| 1201 |
}; |
| 1202 |
#endif
|