LCOV - code coverage report
Current view: top level - libavcodec - ffv1enc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 384 699 54.9 %
Date: 2017-12-18 13:19:42 Functions: 13 16 81.2 %

          Line data    Source code
       1             : /*
       2             :  * FFV1 encoder
       3             :  *
       4             :  * Copyright (c) 2003-2013 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) encoder
      26             :  */
      27             : 
      28             : #include "libavutil/attributes.h"
      29             : #include "libavutil/avassert.h"
      30             : #include "libavutil/crc.h"
      31             : #include "libavutil/opt.h"
      32             : #include "libavutil/imgutils.h"
      33             : #include "libavutil/pixdesc.h"
      34             : #include "libavutil/timer.h"
      35             : 
      36             : #include "avcodec.h"
      37             : #include "internal.h"
      38             : #include "put_bits.h"
      39             : #include "rangecoder.h"
      40             : #include "golomb.h"
      41             : #include "mathops.h"
      42             : #include "ffv1.h"
      43             : 
      44             : static const int8_t quant5_10bit[256] = {
      45             :      0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  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,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
      49             :      2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
      50             :      2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
      51             :      2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
      52             :      2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
      53             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      54             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      55             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      56             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      57             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1,
      58             :     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
      59             :     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
      60             :     -1, -1, -1, -1, -1, -1, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
      61             : };
      62             : 
      63             : static const int8_t quant5[256] = {
      64             :      0,  1,  1,  1,  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, -2,
      74             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      75             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      76             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      77             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      78             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      79             :     -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1,
      80             : };
      81             : 
      82             : static const int8_t quant9_10bit[256] = {
      83             :      0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,
      84             :      2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  3,  3,  3,  3,  3,
      85             :      3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,
      86             :      3,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,  4,  4,
      87             :      4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
      88             :      4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
      89             :      4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
      90             :      4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
      91             :     -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
      92             :     -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
      93             :     -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
      94             :     -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
      95             :     -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
      96             :     -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
      97             :     -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
      98             :     -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
      99             : };
     100             : 
     101             : static const int8_t quant11[256] = {
     102             :      0,  1,  2,  2,  2,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,
     103             :      4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
     104             :      4,  4,  4,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     105             :      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     106             :      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     107             :      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     108             :      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     109             :      5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     110             :     -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
     111             :     -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
     112             :     -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
     113             :     -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
     114             :     -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
     115             :     -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -4,
     116             :     -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
     117             :     -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
     118             : };
     119             : 
     120             : static const uint8_t ver2_state[256] = {
     121             :       0,  10,  10,  10,  10,  16,  16,  16, 28,   16,  16,  29,  42,  49,  20,  49,
     122             :      59,  25,  26,  26,  27,  31,  33,  33, 33,   34,  34,  37,  67,  38,  39,  39,
     123             :      40,  40,  41,  79,  43,  44,  45,  45, 48,   48,  64,  50,  51,  52,  88,  52,
     124             :      53,  74,  55,  57,  58,  58,  74,  60, 101,  61,  62,  84,  66,  66,  68,  69,
     125             :      87,  82,  71,  97,  73,  73,  82,  75, 111,  77,  94,  78,  87,  81,  83,  97,
     126             :      85,  83,  94,  86,  99,  89,  90,  99, 111,  92,  93,  134, 95,  98,  105, 98,
     127             :     105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
     128             :     115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
     129             :     165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
     130             :     147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
     131             :     172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
     132             :     175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
     133             :     197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
     134             :     209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
     135             :     226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
     136             :     241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
     137             : };
     138             : 
     139           0 : static void find_best_state(uint8_t best_state[256][256],
     140             :                             const uint8_t one_state[256])
     141             : {
     142             :     int i, j, k, m;
     143             :     double l2tab[256];
     144             : 
     145           0 :     for (i = 1; i < 256; i++)
     146           0 :         l2tab[i] = log2(i / 256.0);
     147             : 
     148           0 :     for (i = 0; i < 256; i++) {
     149             :         double best_len[256];
     150           0 :         double p = i / 256.0;
     151             : 
     152           0 :         for (j = 0; j < 256; j++)
     153           0 :             best_len[j] = 1 << 30;
     154             : 
     155           0 :         for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {
     156           0 :             double occ[256] = { 0 };
     157           0 :             double len      = 0;
     158           0 :             occ[j] = 1.0;
     159             : 
     160           0 :             if (!one_state[j])
     161           0 :                 continue;
     162             : 
     163           0 :             for (k = 0; k < 256; k++) {
     164           0 :                 double newocc[256] = { 0 };
     165           0 :                 for (m = 1; m < 256; m++)
     166           0 :                     if (occ[m]) {
     167           0 :                         len -=occ[m]*(     p *l2tab[    m]
     168           0 :                                       + (1-p)*l2tab[256-m]);
     169             :                     }
     170           0 :                 if (len < best_len[k]) {
     171           0 :                     best_len[k]      = len;
     172           0 :                     best_state[i][k] = j;
     173             :                 }
     174           0 :                 for (m = 1; m < 256; m++)
     175           0 :                     if (occ[m]) {
     176           0 :                         newocc[      one_state[      m]] += occ[m] * p;
     177           0 :                         newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);
     178             :                     }
     179           0 :                 memcpy(occ, newocc, sizeof(occ));
     180             :             }
     181             :         }
     182             :     }
     183           0 : }
     184             : 
     185   122164972 : static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,
     186             :                                                           uint8_t *state, int v,
     187             :                                                           int is_signed,
     188             :                                                           uint64_t rc_stat[256][2],
     189             :                                                           uint64_t rc_stat2[32][2])
     190             : {
     191             :     int i;
     192             : 
     193             : #define put_rac(C, S, B)                        \
     194             :     do {                                        \
     195             :         if (rc_stat) {                          \
     196             :             rc_stat[*(S)][B]++;                 \
     197             :             rc_stat2[(S) - state][B]++;         \
     198             :         }                                       \
     199             :         put_rac(C, S, B);                       \
     200             :     } while (0)
     201             : 
     202   122164972 :     if (v) {
     203    70569066 :         const int a = FFABS(v);
     204    70569066 :         const int e = av_log2(a);
     205    70569066 :         put_rac(c, state + 0, 0);
     206    70569066 :         if (e <= 9) {
     207   272043555 :             for (i = 0; i < e; i++)
     208   226436667 :                 put_rac(c, state + 1 + i, 1);  // 1..10
     209    45606888 :             put_rac(c, state + 1 + i, 0);
     210             : 
     211   272043555 :             for (i = e - 1; i >= 0; i--)
     212   226436667 :                 put_rac(c, state + 22 + i, (a >> i) & 1);  // 22..31
     213             : 
     214    45606888 :             if (is_signed)
     215    45591192 :                 put_rac(c, state + 11 + e, v < 0);  // 11..21
     216             :         } else {
     217   294732467 :             for (i = 0; i < e; i++)
     218   269770289 :                 put_rac(c, state + 1 + FFMIN(i, 9), 1);  // 1..10
     219    24962178 :             put_rac(c, state + 1 + 9, 0);
     220             : 
     221   294732467 :             for (i = e - 1; i >= 0; i--)
     222   269770289 :                 put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1);  // 22..31
     223             : 
     224    24962178 :             if (is_signed)
     225    24962178 :                 put_rac(c, state + 11 + 10, v < 0);  // 11..21
     226             :         }
     227             :     } else {
     228    51595906 :         put_rac(c, state + 0, 1);
     229             :     }
     230             : #undef put_rac
     231   122164972 : }
     232             : 
     233       47972 : static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,
     234             :                                    int v, int is_signed)
     235             : {
     236       47972 :     put_symbol_inline(c, state, v, is_signed, NULL, NULL);
     237       47972 : }
     238             : 
     239             : 
     240   110987686 : static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,
     241             :                                   int v, int bits)
     242             : {
     243             :     int i, k, code;
     244   110987686 :     v = fold(v - state->bias, bits);
     245             : 
     246   110987686 :     i = state->count;
     247   110987686 :     k = 0;
     248   406590740 :     while (i < state->error_sum) { // FIXME: optimize
     249   184615368 :         k++;
     250   184615368 :         i += i;
     251             :     }
     252             : 
     253             :     av_assert2(k <= 13);
     254             : 
     255   110987686 :     code = v ^ ((2 * state->drift + state->count) >> 31);
     256             : 
     257             :     ff_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,
     258             :             state->bias, state->error_sum, state->drift, state->count, k);
     259   110987686 :     set_sr_golomb(pb, code, k, 12, bits);
     260             : 
     261   110987686 :     update_vlc_state(state, v);
     262   110987686 : }
     263             : 
     264             : #define TYPE int16_t
     265             : #define RENAME(name) name
     266             : #include "ffv1enc_template.c"
     267             : #undef TYPE
     268             : #undef RENAME
     269             : 
     270             : #define TYPE int32_t
     271             : #define RENAME(name) name ## 32
     272             : #include "ffv1enc_template.c"
     273             : 
     274       10200 : static int encode_plane(FFV1Context *s, uint8_t *src, int w, int h,
     275             :                          int stride, int plane_index, int pixel_stride)
     276             : {
     277             :     int x, y, i, ret;
     278       10200 :     const int ring_size = s->context_model ? 3 : 2;
     279             :     int16_t *sample[3];
     280       10200 :     s->run_index = 0;
     281             : 
     282       10200 :     memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));
     283             : 
     284      998400 :     for (y = 0; y < h; y++) {
     285     2964600 :         for (i = 0; i < ring_size; i++)
     286     1976400 :             sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;
     287             : 
     288      988200 :         sample[0][-1]= sample[1][0  ];
     289      988200 :         sample[1][ w]= sample[1][w-1];
     290             : // { START_TIMER
     291      988200 :         if (s->bits_per_raw_sample <= 8) {
     292    69145300 :             for (x = 0; x < w; x++)
     293    68695900 :                 sample[0][x] = src[x * pixel_stride + stride * y];
     294      449400 :             if((ret = encode_line(s, w, sample, plane_index, 8)) < 0)
     295           0 :                 return ret;
     296             :         } else {
     297      538800 :             if (s->packed_at_lsb) {
     298    30801200 :                 for (x = 0; x < w; x++) {
     299    30531800 :                     sample[0][x] = ((uint16_t*)(src + stride*y))[x];
     300             :                 }
     301             :             } else {
     302    46062000 :                 for (x = 0; x < w; x++) {
     303    45792600 :                     sample[0][x] = ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);
     304             :                 }
     305             :             }
     306      538800 :             if((ret = encode_line(s, w, sample, plane_index, s->bits_per_raw_sample)) < 0)
     307           0 :                 return ret;
     308             :         }
     309             : // STOP_TIMER("encode line") }
     310             :     }
     311       10200 :     return 0;
     312             : }
     313             : 
     314         340 : static void write_quant_table(RangeCoder *c, int16_t *quant_table)
     315             : {
     316         340 :     int last = 0;
     317             :     int i;
     318             :     uint8_t state[CONTEXT_SIZE];
     319         340 :     memset(state, 128, sizeof(state));
     320             : 
     321       43520 :     for (i = 1; i < 128; i++)
     322       43180 :         if (quant_table[i] != quant_table[i - 1]) {
     323         984 :             put_symbol(c, state, i - last - 1, 0);
     324         984 :             last = i;
     325             :         }
     326         340 :     put_symbol(c, state, i - last - 1, 0);
     327         340 : }
     328             : 
     329          68 : static void write_quant_tables(RangeCoder *c,
     330             :                                int16_t quant_table[MAX_CONTEXT_INPUTS][256])
     331             : {
     332             :     int i;
     333         408 :     for (i = 0; i < 5; i++)
     334         340 :         write_quant_table(c, quant_table[i]);
     335          68 : }
     336             : 
     337         140 : static void write_header(FFV1Context *f)
     338             : {
     339             :     uint8_t state[CONTEXT_SIZE];
     340             :     int i, j;
     341         140 :     RangeCoder *const c = &f->slice_context[0]->c;
     342             : 
     343         140 :     memset(state, 128, sizeof(state));
     344             : 
     345         140 :     if (f->version < 2) {
     346          20 :         put_symbol(c, state, f->version, 0);
     347          20 :         put_symbol(c, state, f->ac, 0);
     348          20 :         if (f->ac == AC_RANGE_CUSTOM_TAB) {
     349           0 :             for (i = 1; i < 256; i++)
     350           0 :                 put_symbol(c, state,
     351           0 :                            f->state_transition[i] - c->one_state[i], 1);
     352             :         }
     353          20 :         put_symbol(c, state, f->colorspace, 0); //YUV cs type
     354          20 :         if (f->version > 0)
     355           0 :             put_symbol(c, state, f->bits_per_raw_sample, 0);
     356          20 :         put_rac(c, state, f->chroma_planes);
     357          20 :         put_symbol(c, state, f->chroma_h_shift, 0);
     358          20 :         put_symbol(c, state, f->chroma_v_shift, 0);
     359          20 :         put_rac(c, state, f->transparency);
     360             : 
     361          20 :         write_quant_tables(c, f->quant_table);
     362         120 :     } else if (f->version < 3) {
     363           0 :         put_symbol(c, state, f->slice_count, 0);
     364           0 :         for (i = 0; i < f->slice_count; i++) {
     365           0 :             FFV1Context *fs = f->slice_context[i];
     366           0 :             put_symbol(c, state,
     367           0 :                        (fs->slice_x      + 1) * f->num_h_slices / f->width, 0);
     368           0 :             put_symbol(c, state,
     369           0 :                        (fs->slice_y      + 1) * f->num_v_slices / f->height, 0);
     370           0 :             put_symbol(c, state,
     371           0 :                        (fs->slice_width  + 1) * f->num_h_slices / f->width - 1,
     372             :                        0);
     373           0 :             put_symbol(c, state,
     374           0 :                        (fs->slice_height + 1) * f->num_v_slices / f->height - 1,
     375             :                        0);
     376           0 :             for (j = 0; j < f->plane_count; j++) {
     377           0 :                 put_symbol(c, state, f->plane[j].quant_table_index, 0);
     378           0 :                 av_assert0(f->plane[j].quant_table_index == f->context_model);
     379             :             }
     380             :         }
     381             :     }
     382         140 : }
     383             : 
     384          24 : static int write_extradata(FFV1Context *f)
     385             : {
     386          24 :     RangeCoder *const c = &f->c;
     387             :     uint8_t state[CONTEXT_SIZE];
     388             :     int i, j, k;
     389             :     uint8_t state2[32][CONTEXT_SIZE];
     390             :     unsigned v;
     391             : 
     392          24 :     memset(state2, 128, sizeof(state2));
     393          24 :     memset(state, 128, sizeof(state));
     394             : 
     395          24 :     f->avctx->extradata_size = 10000 + 4 +
     396             :                                     (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;
     397          24 :     f->avctx->extradata = av_malloc(f->avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
     398          24 :     if (!f->avctx->extradata)
     399           0 :         return AVERROR(ENOMEM);
     400          24 :     ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
     401          24 :     ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
     402             : 
     403          24 :     put_symbol(c, state, f->version, 0);
     404          24 :     if (f->version > 2) {
     405          24 :         if (f->version == 3) {
     406          24 :             f->micro_version = 4;
     407           0 :         } else if (f->version == 4)
     408           0 :             f->micro_version = 2;
     409          24 :         put_symbol(c, state, f->micro_version, 0);
     410             :     }
     411             : 
     412          24 :     put_symbol(c, state, f->ac, 0);
     413          24 :     if (f->ac == AC_RANGE_CUSTOM_TAB)
     414        3072 :         for (i = 1; i < 256; i++)
     415        3060 :             put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);
     416             : 
     417          24 :     put_symbol(c, state, f->colorspace, 0); // YUV cs type
     418          24 :     put_symbol(c, state, f->bits_per_raw_sample, 0);
     419          24 :     put_rac(c, state, f->chroma_planes);
     420          24 :     put_symbol(c, state, f->chroma_h_shift, 0);
     421          24 :     put_symbol(c, state, f->chroma_v_shift, 0);
     422          24 :     put_rac(c, state, f->transparency);
     423          24 :     put_symbol(c, state, f->num_h_slices - 1, 0);
     424          24 :     put_symbol(c, state, f->num_v_slices - 1, 0);
     425             : 
     426          24 :     put_symbol(c, state, f->quant_table_count, 0);
     427          72 :     for (i = 0; i < f->quant_table_count; i++)
     428          48 :         write_quant_tables(c, f->quant_tables[i]);
     429             : 
     430          72 :     for (i = 0; i < f->quant_table_count; i++) {
     431     6319920 :         for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)
     432     6319872 :             if (f->initial_states[i] && f->initial_states[i][0][j] != 128)
     433           0 :                 break;
     434          48 :         if (j < f->context_count[i] * CONTEXT_SIZE) {
     435           0 :             put_rac(c, state, 1);
     436           0 :             for (j = 0; j < f->context_count[i]; j++)
     437           0 :                 for (k = 0; k < CONTEXT_SIZE; k++) {
     438           0 :                     int pred = j ? f->initial_states[i][j - 1][k] : 128;
     439           0 :                     put_symbol(c, state2[k],
     440           0 :                                (int8_t)(f->initial_states[i][j][k] - pred), 1);
     441             :                 }
     442             :         } else {
     443          48 :             put_rac(c, state, 0);
     444             :         }
     445             :     }
     446             : 
     447          24 :     if (f->version > 2) {
     448          24 :         put_symbol(c, state, f->ec, 0);
     449          24 :         put_symbol(c, state, f->intra = (f->avctx->gop_size < 2), 0);
     450             :     }
     451             : 
     452          24 :     f->avctx->extradata_size = ff_rac_terminate(c);
     453          24 :     v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);
     454          24 :     AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);
     455          24 :     f->avctx->extradata_size += 4;
     456             : 
     457          24 :     return 0;
     458             : }
     459             : 
     460           0 : static int sort_stt(FFV1Context *s, uint8_t stt[256])
     461             : {
     462           0 :     int i, i2, changed, print = 0;
     463             : 
     464             :     do {
     465           0 :         changed = 0;
     466           0 :         for (i = 12; i < 244; i++) {
     467           0 :             for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {
     468             : 
     469             : #define COST(old, new)                                      \
     470             :     s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) +     \
     471             :     s->rc_stat[old][1] * -log2((new)         / 256.0)
     472             : 
     473             : #define COST2(old, new)                         \
     474             :     COST(old, new) + COST(256 - (old), 256 - (new))
     475             : 
     476           0 :                 double size0 = COST2(i,  i) + COST2(i2, i2);
     477           0 :                 double sizeX = COST2(i, i2) + COST2(i2, i);
     478           0 :                 if (size0 - sizeX > size0*(1e-14) && i != 128 && i2 != 128) {
     479             :                     int j;
     480           0 :                     FFSWAP(int, stt[i], stt[i2]);
     481           0 :                     FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);
     482           0 :                     FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);
     483           0 :                     if (i != 256 - i2) {
     484           0 :                         FFSWAP(int, stt[256 - i], stt[256 - i2]);
     485           0 :                         FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);
     486           0 :                         FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);
     487             :                     }
     488           0 :                     for (j = 1; j < 256; j++) {
     489           0 :                         if (stt[j] == i)
     490           0 :                             stt[j] = i2;
     491           0 :                         else if (stt[j] == i2)
     492           0 :                             stt[j] = i;
     493           0 :                         if (i != 256 - i2) {
     494           0 :                             if (stt[256 - j] == 256 - i)
     495           0 :                                 stt[256 - j] = 256 - i2;
     496           0 :                             else if (stt[256 - j] == 256 - i2)
     497           0 :                                 stt[256 - j] = 256 - i;
     498             :                         }
     499             :                     }
     500           0 :                     print = changed = 1;
     501             :                 }
     502             :             }
     503             :         }
     504           0 :     } while (changed);
     505           0 :     return print;
     506             : }
     507             : 
     508          28 : static av_cold int encode_init(AVCodecContext *avctx)
     509             : {
     510          28 :     FFV1Context *s = avctx->priv_data;
     511          28 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
     512             :     int i, j, k, m, ret;
     513             : 
     514          28 :     if ((ret = ff_ffv1_common_init(avctx)) < 0)
     515           0 :         return ret;
     516             : 
     517          28 :     s->version = 0;
     518             : 
     519          56 :     if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||
     520          28 :         avctx->slices > 1)
     521           4 :         s->version = FFMAX(s->version, 2);
     522             : 
     523             :     // Unspecified level & slices, we choose version 1.2+ to ensure multithreaded decodability
     524          28 :     if (avctx->slices == 0 && avctx->level < 0 && avctx->width * avctx->height > 720*576)
     525           0 :         s->version = FFMAX(s->version, 2);
     526             : 
     527          28 :     if (avctx->level <= 0 && s->version == 2) {
     528           4 :         s->version = 3;
     529             :     }
     530          28 :     if (avctx->level >= 0 && avctx->level <= 4) {
     531          20 :         if (avctx->level < s->version) {
     532           0 :             av_log(avctx, AV_LOG_ERROR, "Version %d needed for requested features but %d requested\n", s->version, avctx->level);
     533           0 :             return AVERROR(EINVAL);
     534             :         }
     535          20 :         s->version = avctx->level;
     536             :     }
     537             : 
     538          28 :     if (s->ec < 0) {
     539          28 :         s->ec = (s->version >= 3);
     540             :     }
     541             : 
     542          28 :     if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
     543           0 :         av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
     544           0 :         return AVERROR_INVALIDDATA;
     545             :     }
     546             : 
     547             : #if FF_API_CODER_TYPE
     548             : FF_DISABLE_DEPRECATION_WARNINGS
     549          28 :     if (avctx->coder_type != -1)
     550           0 :         s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;
     551             :     else
     552             : FF_ENABLE_DEPRECATION_WARNINGS
     553             : #endif
     554          28 :     if (s->ac == 1) // Compatbility with common command line usage
     555           0 :         s->ac = AC_RANGE_CUSTOM_TAB;
     556          28 :     else if (s->ac == AC_RANGE_DEFAULT_TAB_FORCE)
     557           0 :         s->ac = AC_RANGE_DEFAULT_TAB;
     558             : 
     559          28 :     s->plane_count = 3;
     560          28 :     switch(avctx->pix_fmt) {
     561           0 :     case AV_PIX_FMT_YUV444P9:
     562             :     case AV_PIX_FMT_YUV422P9:
     563             :     case AV_PIX_FMT_YUV420P9:
     564             :     case AV_PIX_FMT_YUVA444P9:
     565             :     case AV_PIX_FMT_YUVA422P9:
     566             :     case AV_PIX_FMT_YUVA420P9:
     567           0 :         if (!avctx->bits_per_raw_sample)
     568           0 :             s->bits_per_raw_sample = 9;
     569             :     case AV_PIX_FMT_GRAY10:
     570             :     case AV_PIX_FMT_YUV444P10:
     571             :     case AV_PIX_FMT_YUV420P10:
     572             :     case AV_PIX_FMT_YUV422P10:
     573             :     case AV_PIX_FMT_YUVA444P10:
     574             :     case AV_PIX_FMT_YUVA422P10:
     575             :     case AV_PIX_FMT_YUVA420P10:
     576           4 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     577           4 :             s->bits_per_raw_sample = 10;
     578             :     case AV_PIX_FMT_GRAY12:
     579             :     case AV_PIX_FMT_YUV444P12:
     580             :     case AV_PIX_FMT_YUV420P12:
     581             :     case AV_PIX_FMT_YUV422P12:
     582           4 :         s->packed_at_lsb = 1;
     583           4 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     584           0 :             s->bits_per_raw_sample = 12;
     585             :     case AV_PIX_FMT_GRAY16:
     586             :     case AV_PIX_FMT_YUV444P16:
     587             :     case AV_PIX_FMT_YUV422P16:
     588             :     case AV_PIX_FMT_YUV420P16:
     589             :     case AV_PIX_FMT_YUVA444P16:
     590             :     case AV_PIX_FMT_YUVA422P16:
     591             :     case AV_PIX_FMT_YUVA420P16:
     592           8 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {
     593           4 :             s->bits_per_raw_sample = 16;
     594           4 :         } else if (!s->bits_per_raw_sample) {
     595           0 :             s->bits_per_raw_sample = avctx->bits_per_raw_sample;
     596             :         }
     597           8 :         if (s->bits_per_raw_sample <= 8) {
     598           0 :             av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
     599           0 :             return AVERROR_INVALIDDATA;
     600             :         }
     601           8 :         s->version = FFMAX(s->version, 1);
     602          20 :     case AV_PIX_FMT_GRAY8:
     603             :     case AV_PIX_FMT_YA8:
     604             :     case AV_PIX_FMT_YUV444P:
     605             :     case AV_PIX_FMT_YUV440P:
     606             :     case AV_PIX_FMT_YUV422P:
     607             :     case AV_PIX_FMT_YUV420P:
     608             :     case AV_PIX_FMT_YUV411P:
     609             :     case AV_PIX_FMT_YUV410P:
     610             :     case AV_PIX_FMT_YUVA444P:
     611             :     case AV_PIX_FMT_YUVA422P:
     612             :     case AV_PIX_FMT_YUVA420P:
     613          20 :         s->chroma_planes = desc->nb_components < 3 ? 0 : 1;
     614          20 :         s->colorspace = 0;
     615          20 :         s->transparency = desc->nb_components == 4 || desc->nb_components == 2;
     616          20 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     617          12 :             s->bits_per_raw_sample = 8;
     618           8 :         else if (!s->bits_per_raw_sample)
     619           0 :             s->bits_per_raw_sample = 8;
     620          20 :         break;
     621           0 :     case AV_PIX_FMT_RGB32:
     622           0 :         s->colorspace = 1;
     623           0 :         s->transparency = 1;
     624           0 :         s->chroma_planes = 1;
     625           0 :         s->bits_per_raw_sample = 8;
     626           0 :         break;
     627           4 :     case AV_PIX_FMT_RGB48:
     628           4 :         s->colorspace = 1;
     629           4 :         s->chroma_planes = 1;
     630           4 :         s->bits_per_raw_sample = 16;
     631           4 :         s->use32bit = 1;
     632           4 :         s->version = FFMAX(s->version, 1);
     633           4 :         if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
     634           0 :             av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
     635           0 :             return AVERROR_INVALIDDATA;
     636             :         }
     637           4 :         break;
     638           4 :     case AV_PIX_FMT_0RGB32:
     639           4 :         s->colorspace = 1;
     640           4 :         s->chroma_planes = 1;
     641           4 :         s->bits_per_raw_sample = 8;
     642           4 :         break;
     643           0 :     case AV_PIX_FMT_GBRP9:
     644           0 :         if (!avctx->bits_per_raw_sample)
     645           0 :             s->bits_per_raw_sample = 9;
     646             :     case AV_PIX_FMT_GBRP10:
     647           0 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     648           0 :             s->bits_per_raw_sample = 10;
     649             :     case AV_PIX_FMT_GBRP12:
     650           0 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     651           0 :             s->bits_per_raw_sample = 12;
     652             :     case AV_PIX_FMT_GBRP14:
     653           0 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     654           0 :             s->bits_per_raw_sample = 14;
     655             :     case AV_PIX_FMT_GBRP16:
     656           0 :         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)
     657           0 :             s->bits_per_raw_sample = 16;
     658           0 :         else if (!s->bits_per_raw_sample)
     659           0 :             s->bits_per_raw_sample = avctx->bits_per_raw_sample;
     660           0 :         s->colorspace = 1;
     661           0 :         s->chroma_planes = 1;
     662           0 :         if (s->bits_per_raw_sample >= 16) {
     663           0 :             s->use32bit = 1;
     664           0 :             if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
     665           0 :                 av_log(avctx, AV_LOG_ERROR, "16bit RGB is experimental and under development, only use it for experiments\n");
     666           0 :                 return AVERROR_INVALIDDATA;
     667             :             }
     668             :         }
     669           0 :         s->version = FFMAX(s->version, 1);
     670           0 :         break;
     671           0 :     default:
     672           0 :         av_log(avctx, AV_LOG_ERROR, "format not supported\n");
     673           0 :         return AVERROR(ENOSYS);
     674             :     }
     675          28 :     av_assert0(s->bits_per_raw_sample >= 8);
     676             : 
     677          28 :     if (s->bits_per_raw_sample > 8) {
     678          12 :         if (s->ac == AC_GOLOMB_RICE) {
     679          12 :             av_log(avctx, AV_LOG_INFO,
     680             :                     "bits_per_raw_sample > 8, forcing range coder\n");
     681          12 :             s->ac = AC_RANGE_CUSTOM_TAB;
     682             :         }
     683             :     }
     684          28 :     if (s->transparency) {
     685           0 :         av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");
     686             :     }
     687             : #if FF_API_PRIVATE_OPT
     688             : FF_DISABLE_DEPRECATION_WARNINGS
     689          28 :     if (avctx->context_model)
     690           0 :         s->context_model = avctx->context_model;
     691          28 :     if (avctx->context_model > 1U) {
     692           0 :         av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);
     693           0 :         return AVERROR(EINVAL);
     694             :     }
     695             : FF_ENABLE_DEPRECATION_WARNINGS
     696             : #endif
     697             : 
     698          28 :     if (s->ac == AC_RANGE_CUSTOM_TAB) {
     699        3072 :         for (i = 1; i < 256; i++)
     700        3060 :             s->state_transition[i] = ver2_state[i];
     701             :     } else {
     702             :         RangeCoder c;
     703          16 :         ff_build_rac_states(&c, 0.05 * (1LL << 32), 256 - 8);
     704        4096 :         for (i = 1; i < 256; i++)
     705        4080 :             s->state_transition[i] = c.one_state[i];
     706             :     }
     707             : 
     708        7196 :     for (i = 0; i < 256; i++) {
     709        7168 :         s->quant_table_count = 2;
     710        7168 :         if (s->bits_per_raw_sample <= 8) {
     711        4096 :             s->quant_tables[0][0][i]=           quant11[i];
     712        4096 :             s->quant_tables[0][1][i]=        11*quant11[i];
     713        4096 :             s->quant_tables[0][2][i]=     11*11*quant11[i];
     714        4096 :             s->quant_tables[1][0][i]=           quant11[i];
     715        4096 :             s->quant_tables[1][1][i]=        11*quant11[i];
     716        4096 :             s->quant_tables[1][2][i]=     11*11*quant5 [i];
     717        4096 :             s->quant_tables[1][3][i]=   5*11*11*quant5 [i];
     718        4096 :             s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
     719             :         } else {
     720        3072 :             s->quant_tables[0][0][i]=           quant9_10bit[i];
     721        3072 :             s->quant_tables[0][1][i]=        11*quant9_10bit[i];
     722        3072 :             s->quant_tables[0][2][i]=     11*11*quant9_10bit[i];
     723        3072 :             s->quant_tables[1][0][i]=           quant9_10bit[i];
     724        3072 :             s->quant_tables[1][1][i]=        11*quant9_10bit[i];
     725        3072 :             s->quant_tables[1][2][i]=     11*11*quant5_10bit[i];
     726        3072 :             s->quant_tables[1][3][i]=   5*11*11*quant5_10bit[i];
     727        3072 :             s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
     728             :         }
     729             :     }
     730          28 :     s->context_count[0] = (11 * 11 * 11        + 1) / 2;
     731          28 :     s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;
     732          28 :     memcpy(s->quant_table, s->quant_tables[s->context_model],
     733             :            sizeof(s->quant_table));
     734             : 
     735         112 :     for (i = 0; i < s->plane_count; i++) {
     736          84 :         PlaneContext *const p = &s->plane[i];
     737             : 
     738          84 :         memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
     739          84 :         p->quant_table_index = s->context_model;
     740          84 :         p->context_count     = s->context_count[p->quant_table_index];
     741             :     }
     742             : 
     743          28 :     if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
     744           0 :         return ret;
     745             : 
     746             : #if FF_API_CODED_FRAME
     747             : FF_DISABLE_DEPRECATION_WARNINGS
     748          28 :     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
     749             : FF_ENABLE_DEPRECATION_WARNINGS
     750             : #endif
     751             : 
     752          28 :     if (!s->transparency)
     753          28 :         s->plane_count = 2;
     754          28 :     if (!s->chroma_planes && s->version > 3)
     755           0 :         s->plane_count--;
     756             : 
     757          28 :     ret = av_pix_fmt_get_chroma_sub_sample (avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
     758          28 :     if (ret)
     759           0 :         return ret;
     760             : 
     761          28 :     s->picture_number = 0;
     762             : 
     763          28 :     if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {
     764           0 :         for (i = 0; i < s->quant_table_count; i++) {
     765           0 :             s->rc_stat2[i] = av_mallocz(s->context_count[i] *
     766             :                                         sizeof(*s->rc_stat2[i]));
     767           0 :             if (!s->rc_stat2[i])
     768           0 :                 return AVERROR(ENOMEM);
     769             :         }
     770             :     }
     771          28 :     if (avctx->stats_in) {
     772           0 :         char *p = avctx->stats_in;
     773           0 :         uint8_t (*best_state)[256] = av_malloc_array(256, 256);
     774           0 :         int gob_count = 0;
     775             :         char *next;
     776           0 :         if (!best_state)
     777           0 :             return AVERROR(ENOMEM);
     778             : 
     779           0 :         av_assert0(s->version >= 2);
     780             : 
     781             :         for (;;) {
     782           0 :             for (j = 0; j < 256; j++)
     783           0 :                 for (i = 0; i < 2; i++) {
     784           0 :                     s->rc_stat[j][i] = strtol(p, &next, 0);
     785           0 :                     if (next == p) {
     786           0 :                         av_log(avctx, AV_LOG_ERROR,
     787             :                                "2Pass file invalid at %d %d [%s]\n", j, i, p);
     788           0 :                         av_freep(&best_state);
     789           0 :                         return AVERROR_INVALIDDATA;
     790             :                     }
     791           0 :                     p = next;
     792             :                 }
     793           0 :             for (i = 0; i < s->quant_table_count; i++)
     794           0 :                 for (j = 0; j < s->context_count[i]; j++) {
     795           0 :                     for (k = 0; k < 32; k++)
     796           0 :                         for (m = 0; m < 2; m++) {
     797           0 :                             s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);
     798           0 :                             if (next == p) {
     799           0 :                                 av_log(avctx, AV_LOG_ERROR,
     800             :                                        "2Pass file invalid at %d %d %d %d [%s]\n",
     801             :                                        i, j, k, m, p);
     802           0 :                                 av_freep(&best_state);
     803           0 :                                 return AVERROR_INVALIDDATA;
     804             :                             }
     805           0 :                             p = next;
     806             :                         }
     807             :                 }
     808           0 :             gob_count = strtol(p, &next, 0);
     809           0 :             if (next == p || gob_count <= 0) {
     810           0 :                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");
     811           0 :                 av_freep(&best_state);
     812           0 :                 return AVERROR_INVALIDDATA;
     813             :             }
     814           0 :             p = next;
     815           0 :             while (*p == '\n' || *p == ' ')
     816           0 :                 p++;
     817           0 :             if (p[0] == 0)
     818           0 :                 break;
     819             :         }
     820           0 :         if (s->ac == AC_RANGE_CUSTOM_TAB)
     821           0 :             sort_stt(s, s->state_transition);
     822             : 
     823           0 :         find_best_state(best_state, s->state_transition);
     824             : 
     825           0 :         for (i = 0; i < s->quant_table_count; i++) {
     826           0 :             for (k = 0; k < 32; k++) {
     827           0 :                 double a=0, b=0;
     828           0 :                 int jp = 0;
     829           0 :                 for (j = 0; j < s->context_count[i]; j++) {
     830           0 :                     double p = 128;
     831           0 :                     if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1] > 200 && j || a+b > 200) {
     832           0 :                         if (a+b)
     833           0 :                             p = 256.0 * b / (a + b);
     834           0 :                         s->initial_states[i][jp][k] =
     835           0 :                             best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
     836           0 :                         for(jp++; jp<j; jp++)
     837           0 :                             s->initial_states[i][jp][k] = s->initial_states[i][jp-1][k];
     838           0 :                         a=b=0;
     839             :                     }
     840           0 :                     a += s->rc_stat2[i][j][k][0];
     841           0 :                     b += s->rc_stat2[i][j][k][1];
     842           0 :                     if (a+b) {
     843           0 :                         p = 256.0 * b / (a + b);
     844             :                     }
     845           0 :                     s->initial_states[i][j][k] =
     846           0 :                         best_state[av_clip(round(p), 1, 255)][av_clip_uint8((a + b) / gob_count)];
     847             :                 }
     848             :             }
     849             :         }
     850           0 :         av_freep(&best_state);
     851             :     }
     852             : 
     853          28 :     if (s->version > 1) {
     854          24 :         int plane_count = 1 + 2*s->chroma_planes + s->transparency;
     855          24 :         int max_h_slices = AV_CEIL_RSHIFT(avctx->width , s->chroma_h_shift);
     856          24 :         int max_v_slices = AV_CEIL_RSHIFT(avctx->height, s->chroma_v_shift);
     857          24 :         s->num_v_slices = (avctx->width > 352 || avctx->height > 288 || !avctx->slices) ? 2 : 1;
     858             : 
     859          24 :         s->num_v_slices = FFMIN(s->num_v_slices, max_v_slices);
     860             : 
     861          28 :         for (; s->num_v_slices < 32; s->num_v_slices++) {
     862          32 :             for (s->num_h_slices = s->num_v_slices; s->num_h_slices < 2*s->num_v_slices; s->num_h_slices++) {
     863          28 :                 int maxw = (avctx->width  + s->num_h_slices - 1) / s->num_h_slices;
     864          28 :                 int maxh = (avctx->height + s->num_v_slices - 1) / s->num_v_slices;
     865          28 :                 if (s->num_h_slices > max_h_slices || s->num_v_slices > max_v_slices)
     866           0 :                     continue;
     867          28 :                 if (maxw * maxh * (int64_t)(s->bits_per_raw_sample+1) * plane_count > 8<<24)
     868           0 :                     continue;
     869          28 :                 if (avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= MAX_SLICES || !avctx->slices)
     870             :                     goto slices_ok;
     871             :             }
     872             :         }
     873           0 :         av_log(avctx, AV_LOG_ERROR,
     874             :                "Unsupported number %d of slices requested, please specify a "
     875             :                "supported number with -slices (ex:4,6,9,12,16, ...)\n",
     876             :                avctx->slices);
     877           0 :         return AVERROR(ENOSYS);
     878          24 : slices_ok:
     879          24 :         if ((ret = write_extradata(s)) < 0)
     880           0 :             return ret;
     881             :     }
     882             : 
     883          28 :     if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
     884           0 :         return ret;
     885          28 :     s->slice_count = s->max_slice_count;
     886          28 :     if ((ret = ff_ffv1_init_slices_state(s)) < 0)
     887           0 :         return ret;
     888             : 
     889             : #define STATS_OUT_SIZE 1024 * 1024 * 6
     890          28 :     if (avctx->flags & AV_CODEC_FLAG_PASS1) {
     891           0 :         avctx->stats_out = av_mallocz(STATS_OUT_SIZE);
     892           0 :         if (!avctx->stats_out)
     893           0 :             return AVERROR(ENOMEM);
     894           0 :         for (i = 0; i < s->quant_table_count; i++)
     895           0 :             for (j = 0; j < s->max_slice_count; j++) {
     896           0 :                 FFV1Context *sf = s->slice_context[j];
     897           0 :                 av_assert0(!sf->rc_stat2[i]);
     898           0 :                 sf->rc_stat2[i] = av_mallocz(s->context_count[i] *
     899             :                                              sizeof(*sf->rc_stat2[i]));
     900           0 :                 if (!sf->rc_stat2[i])
     901           0 :                     return AVERROR(ENOMEM);
     902             :             }
     903             :     }
     904             : 
     905          28 :     return 0;
     906             : }
     907             : 
     908        4800 : static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
     909             : {
     910        4800 :     RangeCoder *c = &fs->c;
     911             :     uint8_t state[CONTEXT_SIZE];
     912             :     int j;
     913        4800 :     memset(state, 128, sizeof(state));
     914             : 
     915        4800 :     put_symbol(c, state, (fs->slice_x     +1)*f->num_h_slices / f->width   , 0);
     916        4800 :     put_symbol(c, state, (fs->slice_y     +1)*f->num_v_slices / f->height  , 0);
     917        4800 :     put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
     918        4800 :     put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
     919       14400 :     for (j=0; j<f->plane_count; j++) {
     920        9600 :         put_symbol(c, state, f->plane[j].quant_table_index, 0);
     921        9600 :         av_assert0(f->plane[j].quant_table_index == f->context_model);
     922             :     }
     923        4800 :     if (!f->picture.f->interlaced_frame)
     924        4800 :         put_symbol(c, state, 3, 0);
     925             :     else
     926           0 :         put_symbol(c, state, 1 + !f->picture.f->top_field_first, 0);
     927        4800 :     put_symbol(c, state, f->picture.f->sample_aspect_ratio.num, 0);
     928        4800 :     put_symbol(c, state, f->picture.f->sample_aspect_ratio.den, 0);
     929        4800 :     if (f->version > 3) {
     930           0 :         put_rac(c, state, fs->slice_coding_mode == 1);
     931           0 :         if (fs->slice_coding_mode == 1)
     932           0 :             ff_ffv1_clear_slice_state(f, fs);
     933           0 :         put_symbol(c, state, fs->slice_coding_mode, 0);
     934           0 :         if (fs->slice_coding_mode != 1) {
     935           0 :             put_symbol(c, state, fs->slice_rct_by_coef, 0);
     936           0 :             put_symbol(c, state, fs->slice_rct_ry_coef, 0);
     937             :         }
     938             :     }
     939        4800 : }
     940             : 
     941           0 : static void choose_rct_params(FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
     942             : {
     943             : #define NB_Y_COEFF 15
     944             :     static const int rct_y_coeff[15][2] = {
     945             :         {0, 0}, //      4G
     946             :         {1, 1}, //  R + 2G + B
     947             :         {2, 2}, // 2R      + 2B
     948             :         {0, 2}, //      2G + 2B
     949             :         {2, 0}, // 2R + 2G
     950             :         {4, 0}, // 4R
     951             :         {0, 4}, //           4B
     952             : 
     953             :         {0, 3}, //      1G + 3B
     954             :         {3, 0}, // 3R + 1G
     955             :         {3, 1}, // 3R      +  B
     956             :         {1, 3}, //  R      + 3B
     957             :         {1, 2}, //  R +  G + 2B
     958             :         {2, 1}, // 2R +  G +  B
     959             :         {0, 1}, //      3G +  B
     960             :         {1, 0}, //  R + 3G
     961             :     };
     962             : 
     963           0 :     int stat[NB_Y_COEFF] = {0};
     964             :     int x, y, i, p, best;
     965             :     int16_t *sample[3];
     966           0 :     int lbd = fs->bits_per_raw_sample <= 8;
     967             : 
     968           0 :     for (y = 0; y < h; y++) {
     969           0 :         int lastr=0, lastg=0, lastb=0;
     970           0 :         for (p = 0; p < 3; p++)
     971           0 :             sample[p] = fs->sample_buffer + p*w;
     972             : 
     973           0 :         for (x = 0; x < w; x++) {
     974             :             int b, g, r;
     975             :             int ab, ag, ar;
     976           0 :             if (lbd) {
     977           0 :                 unsigned v = *((const uint32_t*)(src[0] + x*4 + stride[0]*y));
     978           0 :                 b =  v        & 0xFF;
     979           0 :                 g = (v >>  8) & 0xFF;
     980           0 :                 r = (v >> 16) & 0xFF;
     981             :             } else {
     982           0 :                 b = *((const uint16_t*)(src[0] + x*2 + stride[0]*y));
     983           0 :                 g = *((const uint16_t*)(src[1] + x*2 + stride[1]*y));
     984           0 :                 r = *((const uint16_t*)(src[2] + x*2 + stride[2]*y));
     985             :             }
     986             : 
     987           0 :             ar = r - lastr;
     988           0 :             ag = g - lastg;
     989           0 :             ab = b - lastb;
     990           0 :             if (x && y) {
     991           0 :                 int bg = ag - sample[0][x];
     992           0 :                 int bb = ab - sample[1][x];
     993           0 :                 int br = ar - sample[2][x];
     994             : 
     995           0 :                 br -= bg;
     996           0 :                 bb -= bg;
     997             : 
     998           0 :                 for (i = 0; i<NB_Y_COEFF; i++) {
     999           0 :                     stat[i] += FFABS(bg + ((br*rct_y_coeff[i][0] + bb*rct_y_coeff[i][1])>>2));
    1000             :                 }
    1001             : 
    1002             :             }
    1003           0 :             sample[0][x] = ag;
    1004           0 :             sample[1][x] = ab;
    1005           0 :             sample[2][x] = ar;
    1006             : 
    1007           0 :             lastr = r;
    1008           0 :             lastg = g;
    1009           0 :             lastb = b;
    1010             :         }
    1011             :     }
    1012             : 
    1013           0 :     best = 0;
    1014           0 :     for (i=1; i<NB_Y_COEFF; i++) {
    1015           0 :         if (stat[i] < stat[best])
    1016           0 :             best = i;
    1017             :     }
    1018             : 
    1019           0 :     fs->slice_rct_by_coef = rct_y_coeff[best][1];
    1020           0 :     fs->slice_rct_ry_coef = rct_y_coeff[best][0];
    1021           0 : }
    1022             : 
    1023        5000 : static int encode_slice(AVCodecContext *c, void *arg)
    1024             : {
    1025        5000 :     FFV1Context *fs  = *(void **)arg;
    1026        5000 :     FFV1Context *f   = fs->avctx->priv_data;
    1027        5000 :     int width        = fs->slice_width;
    1028        5000 :     int height       = fs->slice_height;
    1029        5000 :     int x            = fs->slice_x;
    1030        5000 :     int y            = fs->slice_y;
    1031        5000 :     const AVFrame *const p = f->picture.f;
    1032        5000 :     const int ps     = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
    1033             :     int ret;
    1034        5000 :     RangeCoder c_bak = fs->c;
    1035       15000 :     const uint8_t *planes[3] = {p->data[0] + ps*x + y*p->linesize[0],
    1036        5000 :                                 p->data[1] ? p->data[1] + ps*x + y*p->linesize[1] : NULL,
    1037        5000 :                                 p->data[2] ? p->data[2] + ps*x + y*p->linesize[2] : NULL};
    1038             : 
    1039        5000 :     fs->slice_coding_mode = 0;
    1040        5000 :     if (f->version > 3) {
    1041           0 :         choose_rct_params(fs, planes, p->linesize, width, height);
    1042             :     } else {
    1043        5000 :         fs->slice_rct_by_coef = 1;
    1044        5000 :         fs->slice_rct_ry_coef = 1;
    1045             :     }
    1046             : 
    1047        5000 : retry:
    1048        5000 :     if (f->key_frame)
    1049         500 :         ff_ffv1_clear_slice_state(f, fs);
    1050        5000 :     if (f->version > 2) {
    1051        4800 :         encode_slice_header(f, fs);
    1052             :     }
    1053        5000 :     if (fs->ac == AC_GOLOMB_RICE) {
    1054        2600 :         if (f->version > 2)
    1055        2400 :             put_rac(&fs->c, (uint8_t[]) { 129 }, 0);
    1056        2600 :         fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate(&fs->c) : 0;
    1057        5200 :         init_put_bits(&fs->pb,
    1058        2600 :                       fs->c.bytestream_start + fs->ac_byte_count,
    1059        2600 :                       fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);
    1060             :     }
    1061             : 
    1062        8400 :     if (f->colorspace == 0 && c->pix_fmt != AV_PIX_FMT_YA8) {
    1063        3400 :         const int chroma_width  = AV_CEIL_RSHIFT(width,  f->chroma_h_shift);
    1064        3400 :         const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
    1065        3400 :         const int cx            = x >> f->chroma_h_shift;
    1066        3400 :         const int cy            = y >> f->chroma_v_shift;
    1067             : 
    1068        3400 :         ret = encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
    1069             : 
    1070        3400 :         if (f->chroma_planes) {
    1071        3400 :             ret |= encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
    1072        3400 :             ret |= encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
    1073             :         }
    1074        3400 :         if (fs->transparency)
    1075           0 :             ret |= encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2, 1);
    1076        1600 :     } else if (c->pix_fmt == AV_PIX_FMT_YA8) {
    1077           0 :         ret  = encode_plane(fs, p->data[0] +     ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 2);
    1078           0 :         ret |= encode_plane(fs, p->data[0] + 1 + ps*x + y*p->linesize[0], width, height, p->linesize[0], 1, 2);
    1079        1600 :     } else if (f->use32bit) {
    1080         800 :         ret = encode_rgb_frame32(fs, planes, width, height, p->linesize);
    1081             :     } else {
    1082         800 :         ret = encode_rgb_frame(fs, planes, width, height, p->linesize);
    1083             :     }
    1084        5000 :     emms_c();
    1085             : 
    1086        5000 :     if (ret < 0) {
    1087           0 :         av_assert0(fs->slice_coding_mode == 0);
    1088           0 :         if (fs->version < 4 || !fs->ac) {
    1089           0 :             av_log(c, AV_LOG_ERROR, "Buffer too small\n");
    1090           0 :             return ret;
    1091             :         }
    1092           0 :         av_log(c, AV_LOG_DEBUG, "Coding slice as PCM\n");
    1093           0 :         fs->slice_coding_mode = 1;
    1094           0 :         fs->c = c_bak;
    1095           0 :         goto retry;
    1096             :     }
    1097             : 
    1098        5000 :     return 0;
    1099             : }
    1100             : 
    1101        1456 : static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
    1102             :                         const AVFrame *pict, int *got_packet)
    1103             : {
    1104        1456 :     FFV1Context *f      = avctx->priv_data;
    1105        1456 :     RangeCoder *const c = &f->slice_context[0]->c;
    1106        1456 :     AVFrame *const p    = f->picture.f;
    1107        1456 :     uint8_t keystate    = 128;
    1108             :     uint8_t *buf_p;
    1109             :     int i, ret;
    1110        1456 :     int64_t maxsize =   AV_INPUT_BUFFER_MIN_SIZE
    1111        1456 :                       + avctx->width*avctx->height*37LL*4;
    1112             : 
    1113        1456 :     if(!pict) {
    1114          56 :         if (avctx->flags & AV_CODEC_FLAG_PASS1) {
    1115             :             int j, k, m;
    1116           0 :             char *p   = avctx->stats_out;
    1117           0 :             char *end = p + STATS_OUT_SIZE;
    1118             : 
    1119           0 :             memset(f->rc_stat, 0, sizeof(f->rc_stat));
    1120           0 :             for (i = 0; i < f->quant_table_count; i++)
    1121           0 :                 memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));
    1122             : 
    1123           0 :             av_assert0(f->slice_count == f->max_slice_count);
    1124           0 :             for (j = 0; j < f->slice_count; j++) {
    1125           0 :                 FFV1Context *fs = f->slice_context[j];
    1126           0 :                 for (i = 0; i < 256; i++) {
    1127           0 :                     f->rc_stat[i][0] += fs->rc_stat[i][0];
    1128           0 :                     f->rc_stat[i][1] += fs->rc_stat[i][1];
    1129             :                 }
    1130           0 :                 for (i = 0; i < f->quant_table_count; i++) {
    1131           0 :                     for (k = 0; k < f->context_count[i]; k++)
    1132           0 :                         for (m = 0; m < 32; m++) {
    1133           0 :                             f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];
    1134           0 :                             f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];
    1135             :                         }
    1136             :                 }
    1137             :             }
    1138             : 
    1139           0 :             for (j = 0; j < 256; j++) {
    1140           0 :                 snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
    1141             :                         f->rc_stat[j][0], f->rc_stat[j][1]);
    1142           0 :                 p += strlen(p);
    1143             :             }
    1144           0 :             snprintf(p, end - p, "\n");
    1145             : 
    1146           0 :             for (i = 0; i < f->quant_table_count; i++) {
    1147           0 :                 for (j = 0; j < f->context_count[i]; j++)
    1148           0 :                     for (m = 0; m < 32; m++) {
    1149           0 :                         snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",
    1150           0 :                                 f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);
    1151           0 :                         p += strlen(p);
    1152             :                     }
    1153             :             }
    1154           0 :             snprintf(p, end - p, "%d\n", f->gob_count);
    1155             :         }
    1156          56 :         return 0;
    1157             :     }
    1158             : 
    1159        1400 :     if (f->version > 3)
    1160           0 :         maxsize = AV_INPUT_BUFFER_MIN_SIZE + avctx->width*avctx->height*3LL*4;
    1161             : 
    1162        1400 :     if (maxsize > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32) {
    1163           0 :         av_log(avctx, AV_LOG_WARNING, "Cannot allocate worst case packet size, the encoding could fail\n");
    1164           0 :         maxsize = INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE - 32;
    1165             :     }
    1166             : 
    1167        1400 :     if ((ret = ff_alloc_packet2(avctx, pkt, maxsize, 0)) < 0)
    1168           0 :         return ret;
    1169             : 
    1170        1400 :     ff_init_range_encoder(c, pkt->data, pkt->size);
    1171        1400 :     ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
    1172             : 
    1173        1400 :     av_frame_unref(p);
    1174        1400 :     if ((ret = av_frame_ref(p, pict)) < 0)
    1175           0 :         return ret;
    1176             : #if FF_API_CODED_FRAME
    1177             : FF_DISABLE_DEPRECATION_WARNINGS
    1178        1400 :     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
    1179             : FF_ENABLE_DEPRECATION_WARNINGS
    1180             : #endif
    1181             : 
    1182        1400 :     if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {
    1183         140 :         put_rac(c, &keystate, 1);
    1184         140 :         f->key_frame = 1;
    1185         140 :         f->gob_count++;
    1186         140 :         write_header(f);
    1187             :     } else {
    1188        1260 :         put_rac(c, &keystate, 0);
    1189        1260 :         f->key_frame = 0;
    1190             :     }
    1191             : 
    1192        1400 :     if (f->ac == AC_RANGE_CUSTOM_TAB) {
    1193             :         int i;
    1194      153600 :         for (i = 1; i < 256; i++) {
    1195      153000 :             c->one_state[i]        = f->state_transition[i];
    1196      153000 :             c->zero_state[256 - i] = 256 - c->one_state[i];
    1197             :         }
    1198             :     }
    1199             : 
    1200        6400 :     for (i = 0; i < f->slice_count; i++) {
    1201        5000 :         FFV1Context *fs = f->slice_context[i];
    1202        5000 :         uint8_t *start  = pkt->data + pkt->size * (int64_t)i / f->slice_count;
    1203        5000 :         int len         = pkt->size / f->slice_count;
    1204        5000 :         if (i) {
    1205        3600 :             ff_init_range_encoder(&fs->c, start, len);
    1206             :         } else {
    1207        1400 :             av_assert0(fs->c.bytestream_end >= fs->c.bytestream_start + len);
    1208        1400 :             av_assert0(fs->c.bytestream < fs->c.bytestream_start + len);
    1209        1400 :             fs->c.bytestream_end = fs->c.bytestream_start + len;
    1210             :         }
    1211             :     }
    1212        1400 :     avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,
    1213             :                    f->slice_count, sizeof(void *));
    1214             : 
    1215        1400 :     buf_p = pkt->data;
    1216        6400 :     for (i = 0; i < f->slice_count; i++) {
    1217        5000 :         FFV1Context *fs = f->slice_context[i];
    1218             :         int bytes;
    1219             : 
    1220        5000 :         if (fs->ac != AC_GOLOMB_RICE) {
    1221        2400 :             uint8_t state = 129;
    1222        2400 :             put_rac(&fs->c, &state, 0);
    1223        2400 :             bytes = ff_rac_terminate(&fs->c);
    1224             :         } else {
    1225        2600 :             flush_put_bits(&fs->pb); // FIXME: nicer padding
    1226        2600 :             bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;
    1227             :         }
    1228        5000 :         if (i > 0 || f->version > 2) {
    1229        4800 :             av_assert0(bytes < pkt->size / f->slice_count);
    1230        4800 :             memmove(buf_p, fs->c.bytestream_start, bytes);
    1231        4800 :             av_assert0(bytes < (1 << 24));
    1232        4800 :             AV_WB24(buf_p + bytes, bytes);
    1233        4800 :             bytes += 3;
    1234             :         }
    1235        5000 :         if (f->ec) {
    1236             :             unsigned v;
    1237        4800 :             buf_p[bytes++] = 0;
    1238        4800 :             v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);
    1239        4800 :             AV_WL32(buf_p + bytes, v);
    1240        4800 :             bytes += 4;
    1241             :         }
    1242        5000 :         buf_p += bytes;
    1243             :     }
    1244             : 
    1245        1400 :     if (avctx->flags & AV_CODEC_FLAG_PASS1)
    1246           0 :         avctx->stats_out[0] = '\0';
    1247             : 
    1248             : #if FF_API_CODED_FRAME
    1249             : FF_DISABLE_DEPRECATION_WARNINGS
    1250        1400 :     avctx->coded_frame->key_frame = f->key_frame;
    1251             : FF_ENABLE_DEPRECATION_WARNINGS
    1252             : #endif
    1253             : 
    1254        1400 :     f->picture_number++;
    1255        1400 :     pkt->size   = buf_p - pkt->data;
    1256        1400 :     pkt->pts    =
    1257        1400 :     pkt->dts    = pict->pts;
    1258        1400 :     pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;
    1259        1400 :     *got_packet = 1;
    1260             : 
    1261        1400 :     return 0;
    1262             : }
    1263             : 
    1264          28 : static av_cold int encode_close(AVCodecContext *avctx)
    1265             : {
    1266          28 :     ff_ffv1_close(avctx);
    1267          28 :     return 0;
    1268             : }
    1269             : 
    1270             : #define OFFSET(x) offsetof(FFV1Context, x)
    1271             : #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
    1272             : static const AVOption options[] = {
    1273             :     { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
    1274             :     { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
    1275             :             { .i64 = 0 }, -2, 2, VE, "coder" },
    1276             :         { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
    1277             :             { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
    1278             :         { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
    1279             :             { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
    1280             :         { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
    1281             :             { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },
    1282             :         { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
    1283             :             { .i64 = 1 }, INT_MIN, INT_MAX, VE, "coder" },
    1284             :     { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
    1285             :             { .i64 = 0 }, 0, 1, VE },
    1286             : 
    1287             :     { NULL }
    1288             : };
    1289             : 
    1290             : static const AVClass ffv1_class = {
    1291             :     .class_name = "ffv1 encoder",
    1292             :     .item_name  = av_default_item_name,
    1293             :     .option     = options,
    1294             :     .version    = LIBAVUTIL_VERSION_INT,
    1295             : };
    1296             : 
    1297             : #if FF_API_CODER_TYPE
    1298             : static const AVCodecDefault ffv1_defaults[] = {
    1299             :     { "coder", "-1" },
    1300             :     { NULL },
    1301             : };
    1302             : #endif
    1303             : 
    1304             : AVCodec ff_ffv1_encoder = {
    1305             :     .name           = "ffv1",
    1306             :     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
    1307             :     .type           = AVMEDIA_TYPE_VIDEO,
    1308             :     .id             = AV_CODEC_ID_FFV1,
    1309             :     .priv_data_size = sizeof(FFV1Context),
    1310             :     .init           = encode_init,
    1311             :     .encode2        = encode_frame,
    1312             :     .close          = encode_close,
    1313             :     .capabilities   = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_DELAY,
    1314             :     .pix_fmts       = (const enum AVPixelFormat[]) {
    1315             :         AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,  AV_PIX_FMT_YUV444P,
    1316             :         AV_PIX_FMT_YUVA444P,  AV_PIX_FMT_YUV440P,   AV_PIX_FMT_YUV422P,   AV_PIX_FMT_YUV411P,
    1317             :         AV_PIX_FMT_YUV410P,   AV_PIX_FMT_0RGB32,    AV_PIX_FMT_RGB32,     AV_PIX_FMT_YUV420P16,
    1318             :         AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV444P9,  AV_PIX_FMT_YUV422P9,
    1319             :         AV_PIX_FMT_YUV420P9,  AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    1320             :         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
    1321             :         AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA420P16,
    1322             :         AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA420P10,
    1323             :         AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA420P9,
    1324             :         AV_PIX_FMT_GRAY16,    AV_PIX_FMT_GRAY8,     AV_PIX_FMT_GBRP9,     AV_PIX_FMT_GBRP10,
    1325             :         AV_PIX_FMT_GBRP12,    AV_PIX_FMT_GBRP14,
    1326             :         AV_PIX_FMT_YA8,
    1327             :         AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12,
    1328             :         AV_PIX_FMT_GBRP16, AV_PIX_FMT_RGB48,
    1329             :         AV_PIX_FMT_NONE
    1330             : 
    1331             :     },
    1332             : #if FF_API_CODER_TYPE
    1333             :     .defaults       = ffv1_defaults,
    1334             : #endif
    1335             :     .priv_class     = &ffv1_class,
    1336             : };

Generated by: LCOV version 1.13