falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44689 Commits
32 Branches
824MB
Tree: c5714b51aa
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'c5714b51aa'
${ noResults }
FFmpeg/libavcodec/ffv1enc.c

1129 lines
38KB
Raw Blame History 

  1. /*

  2.  * FFV1 encoder for libavcodec

  3.  *

  4.  * Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>

  5.  *

  6.  * This file is part of Libav.

  7.  *

  8.  * Libav 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.  * Libav 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 Libav; 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/pixdesc.h"

  31. #include "libavutil/crc.h"

  32. #include "libavutil/opt.h"

  33. #include "libavutil/imgutils.h"

  34. 

  35. #include "avcodec.h"

  36. #include "golomb.h"

  37. #include "internal.h"

  38. #include "put_bits.h"

  39. #include "rangecoder.h"

  40. #include "mathops.h"

  41. #include "ffv1.h"

  42. 

  43. static void find_best_state(uint8_t best_state[256][256],

  44.                             const uint8_t one_state[256])

  45. {

  46.     int i, j, k, m;

  47.     double l2tab[256];

  48. 

  49.     for (i = 1; i < 256; i++)

  50.         l2tab[i] = log2(i / 256.0);

  51. 

  52.     for (i = 0; i < 256; i++) {

  53.         double best_len[256];

  54.         double p = i / 256.0;

  55. 

  56.         for (j = 0; j < 256; j++)

  57.             best_len[j] = 1 << 30;

  58. 

  59.         for (j = FFMAX(i - 10, 1); j < FFMIN(i + 11, 256); j++) {

  60.             double occ[256] = { 0 };

  61.             double len      = 0;

  62.             occ[j] = 1.0;

  63.             for (k = 0; k < 256; k++) {

  64.                 double newocc[256] = { 0 };

  65.                 for (m = 1; m < 256; m++)

  66.                     if (occ[m]) {

  67.                         len -= occ[m] *     (p  * l2tab[m] +

  68.                                         (1 - p) * l2tab[256 - m]);

  69.                     }

  70.                 if (len < best_len[k]) {

  71.                     best_len[k]      = len;

  72.                     best_state[i][k] = j;

  73.                 }

  74.                 for (m = 1; m < 256; m++)

  75.                     if (occ[m]) {

  76.                         newocc[one_state[m]]             += occ[m] * p;

  77.                         newocc[256 - one_state[256 - m]] += occ[m] * (1 - p);

  78.                     }

  79.                 memcpy(occ, newocc, sizeof(occ));

  80.             }

  81.         }

  82.     }

  83. }

  84. 

  85. static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c,

  86.                                                           uint8_t *state, int v,

  87.                                                           int is_signed,

  88.                                                           uint64_t rc_stat[256][2],

  89.                                                           uint64_t rc_stat2[32][2])

  90. {

  91.     int i;

  92. 

  93. #define put_rac(C, S, B)                        \

  94.     do {                                        \

  95.         if (rc_stat) {                          \

  96.             rc_stat[*(S)][B]++;                 \

  97.             rc_stat2[(S) - state][B]++;         \

  98.         }                                       \

  99.         put_rac(C, S, B);                       \

  100.     } while (0)

  101. 

  102.     if (v) {

  103.         const int a = FFABS(v);

  104.         const int e = av_log2(a);

  105.         put_rac(c, state + 0, 0);

  106.         if (e <= 9) {

  107.             for (i = 0; i < e; i++)

  108.                 put_rac(c, state + 1 + i, 1);  // 1..10

  109.             put_rac(c, state + 1 + i, 0);

  110. 

  111.             for (i = e - 1; i >= 0; i--)

  112.                 put_rac(c, state + 22 + i, (a >> i) & 1);  // 22..31

  113. 

  114.             if (is_signed)

  115.                 put_rac(c, state + 11 + e, v < 0);  // 11..21

  116.         } else {

  117.             for (i = 0; i < e; i++)

  118.                 put_rac(c, state + 1 + FFMIN(i, 9), 1);  // 1..10

  119.             put_rac(c, state + 1 + 9, 0);

  120. 

  121.             for (i = e - 1; i >= 0; i--)

  122.                 put_rac(c, state + 22 + FFMIN(i, 9), (a >> i) & 1);  // 22..31

  123. 

  124.             if (is_signed)

  125.                 put_rac(c, state + 11 + 10, v < 0);  // 11..21

  126.         }

  127.     } else {

  128.         put_rac(c, state + 0, 1);

  129.     }

  130. #undef put_rac

  131. }

  132. 

  133. static av_noinline void put_symbol(RangeCoder *c, uint8_t *state,

  134.                                    int v, int is_signed)

  135. {

  136.     put_symbol_inline(c, state, v, is_signed, NULL, NULL);

  137. }

  138. 

  139. static inline void put_vlc_symbol(PutBitContext *pb, VlcState *const state,

  140.                                   int v, int bits)

  141. {

  142.     int i, k, code;

  143.     v = fold(v - state->bias, bits);

  144. 

  145.     i = state->count;

  146.     k = 0;

  147.     while (i < state->error_sum) { // FIXME: optimize

  148.         k++;

  149.         i += i;

  150.     }

  151. 

  152.     assert(k <= 13);

  153. 

  154.     code = v ^ ((2 * state->drift + state->count) >> 31);

  155. 

  156.     ff_dlog(NULL, "v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code,

  157.             state->bias, state->error_sum, state->drift, state->count, k);

  158.     set_sr_golomb(pb, code, k, 12, bits);

  159. 

  160.     update_vlc_state(state, v);

  161. }

  162. 

  163. static av_always_inline int encode_line(FFV1Context *s, int w,

  164.                                         int16_t *sample[3],

  165.                                         int plane_index, int bits)

  166. {

  167.     PlaneContext *const p = &s->plane[plane_index];

  168.     RangeCoder *const c   = &s->c;

  169.     int x;

  170.     int run_index = s->run_index;

  171.     int run_count = 0;

  172.     int run_mode  = 0;

  173. 

  174.     if (s->ac != AC_GOLOMB_RICE) {

  175.         if (c->bytestream_end - c->bytestream < w * 20) {

  176.             av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");

  177.             return AVERROR_INVALIDDATA;

  178.         }

  179.     } else {

  180.         if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < w * 4) {

  181.             av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");

  182.             return AVERROR_INVALIDDATA;

  183.         }

  184.     }

  185. 

  186.     for (x = 0; x < w; x++) {

  187.         int diff, context;

  188. 

  189.         context = get_context(p, sample[0] + x, sample[1] + x, sample[2] + x);

  190.         diff    = sample[0][x] - predict(sample[0] + x, sample[1] + x);

  191. 

  192.         if (context < 0) {

  193.             context = -context;

  194.             diff    = -diff;

  195.         }

  196. 

  197.         diff = fold(diff, bits);

  198. 

  199.         if (s->ac != AC_GOLOMB_RICE) {

  200.             if (s->flags & AV_CODEC_FLAG_PASS1) {

  201.                 put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat,

  202.                                   s->rc_stat2[p->quant_table_index][context]);

  203.             } else {

  204.                 put_symbol_inline(c, p->state[context], diff, 1, NULL, NULL);

  205.             }

  206.         } else {

  207.             if (context == 0)

  208.                 run_mode = 1;

  209. 

  210.             if (run_mode) {

  211.                 if (diff) {

  212.                     while (run_count >= 1 << ff_log2_run[run_index]) {

  213.                         run_count -= 1 << ff_log2_run[run_index];

  214.                         run_index++;

  215.                         put_bits(&s->pb, 1, 1);

  216.                     }

  217. 

  218.                     put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);

  219.                     if (run_index)

  220.                         run_index--;

  221.                     run_count = 0;

  222.                     run_mode  = 0;

  223.                     if (diff > 0)

  224.                         diff--;

  225.                 } else {

  226.                     run_count++;

  227.                 }

  228.             }

  229. 

  230.             ff_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",

  231.                     run_count, run_index, run_mode, x,

  232.                     (int)put_bits_count(&s->pb));

  233. 

  234.             if (run_mode == 0)

  235.                 put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);

  236.         }

  237.     }

  238.     if (run_mode) {

  239.         while (run_count >= 1 << ff_log2_run[run_index]) {

  240.             run_count -= 1 << ff_log2_run[run_index];

  241.             run_index++;

  242.             put_bits(&s->pb, 1, 1);

  243.         }

  244. 

  245.         if (run_count)

  246.             put_bits(&s->pb, 1, 1);

  247.     }

  248.     s->run_index = run_index;

  249. 

  250.     return 0;

  251. }

  252. 

  253. static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h,

  254.                          int stride, int plane_index)

  255. {

  256.     int x, y, i;

  257.     const int ring_size = s->context_model ? 3 : 2;

  258.     int16_t *sample[3];

  259.     s->run_index = 0;

  260. 

  261.     memset(s->sample_buffer, 0, ring_size * (w + 6) * sizeof(*s->sample_buffer));

  262. 

  263.     for (y = 0; y < h; y++) {

  264.         for (i = 0; i < ring_size; i++)

  265.             sample[i] = s->sample_buffer + (w + 6) * ((h + i - y) % ring_size) + 3;

  266. 

  267.         sample[0][-1] = sample[1][0];

  268.         sample[1][w]  = sample[1][w - 1];

  269. // { START_TIMER

  270.         if (s->bits_per_raw_sample <= 8) {

  271.             for (x = 0; x < w; x++)

  272.                 sample[0][x] = src[x + stride * y];

  273.             encode_line(s, w, sample, plane_index, 8);

  274.         } else {

  275.             if (s->packed_at_lsb) {

  276.                 for (x = 0; x < w; x++)

  277.                     sample[0][x] = ((uint16_t *)(src + stride * y))[x];

  278.             } else {

  279.                 for (x = 0; x < w; x++)

  280.                     sample[0][x] =

  281.                         ((uint16_t *)(src + stride * y))[x] >> (16 - s->bits_per_raw_sample);

  282.             }

  283.             encode_line(s, w, sample, plane_index, s->bits_per_raw_sample);

  284.         }

  285. // STOP_TIMER("encode line") }

  286.     }

  287. }

  288. 

  289. static void encode_rgb_frame(FFV1Context *s, const uint8_t *src[3],

  290.                              int w, int h, const int stride[3])

  291. {

  292.     int x, y, p, i;

  293.     const int ring_size = s->context_model ? 3 : 2;

  294.     int16_t *sample[MAX_PLANES][3];

  295.     int lbd  = s->avctx->bits_per_raw_sample <= 8;

  296.     int bits = s->avctx->bits_per_raw_sample > 0

  297.                ? s->avctx->bits_per_raw_sample

  298.                : 8;

  299.     int offset = 1 << bits;

  300. 

  301.     s->run_index = 0;

  302. 

  303.     memset(s->sample_buffer, 0, ring_size * MAX_PLANES *

  304.                                 (w + 6) * sizeof(*s->sample_buffer));

  305. 

  306.     for (y = 0; y < h; y++) {

  307.         for (i = 0; i < ring_size; i++)

  308.             for (p = 0; p < MAX_PLANES; p++)

  309.                 sample[p][i] = s->sample_buffer + p * ring_size *

  310.                                (w + 6) +

  311.                                ((h + i - y) % ring_size) * (w + 6) + 3;

  312. 

  313.         for (x = 0; x < w; x++) {

  314.             int b, g, r, av_uninit(a);

  315.             if (lbd) {

  316.                 unsigned v = *((const uint32_t *)(src[0] + x * 4 + stride[0] * y));

  317.                 b = v & 0xFF;

  318.                 g = (v >> 8) & 0xFF;

  319.                 r = (v >> 16) & 0xFF;

  320.                 a = v >> 24;

  321.             } else {

  322.                 b = *((const uint16_t *)(src[0] + x * 2 + stride[0] * y));

  323.                 g = *((const uint16_t *)(src[1] + x * 2 + stride[1] * y));

  324.                 r = *((const uint16_t *)(src[2] + x * 2 + stride[2] * y));

  325.             }

  326. 

  327.             b -= g;

  328.             r -= g;

  329.             g += (b + r) >> 2;

  330.             b += offset;

  331.             r += offset;

  332. 

  333.             sample[0][0][x] = g;

  334.             sample[1][0][x] = b;

  335.             sample[2][0][x] = r;

  336.             sample[3][0][x] = a;

  337.         }

  338.         for (p = 0; p < 3 + s->transparency; p++) {

  339.             sample[p][0][-1] = sample[p][1][0];

  340.             sample[p][1][w]  = sample[p][1][w - 1];

  341.             if (lbd)

  342.                 encode_line(s, w, sample[p], (p + 1) / 2, 9);

  343.             else

  344.                 encode_line(s, w, sample[p], (p + 1) / 2, bits + 1);

  345.         }

  346.     }

  347. }

  348. 

  349. 

  350. static void write_quant_table(RangeCoder *c, int16_t *quant_table)

  351. {

  352.     int last = 0;

  353.     int i;

  354.     uint8_t state[CONTEXT_SIZE];

  355.     memset(state, 128, sizeof(state));

  356. 

  357.     for (i = 1; i < 128; i++)

  358.         if (quant_table[i] != quant_table[i - 1]) {

  359.             put_symbol(c, state, i - last - 1, 0);

  360.             last = i;

  361.         }

  362.     put_symbol(c, state, i - last - 1, 0);

  363. }

  364. 

  365. static void write_quant_tables(RangeCoder *c,

  366.                                int16_t quant_table[MAX_CONTEXT_INPUTS][256])

  367. {

  368.     int i;

  369.     for (i = 0; i < 5; i++)

  370.         write_quant_table(c, quant_table[i]);

  371. }

  372. 

  373. static void write_header(FFV1Context *f)

  374. {

  375.     uint8_t state[CONTEXT_SIZE];

  376.     int i;

  377.     RangeCoder *const c = &f->slice_context[0]->c;

  378. 

  379.     memset(state, 128, sizeof(state));

  380. 

  381.     if (f->version < 2) {

  382.         put_symbol(c, state, f->version, 0);

  383.         put_symbol(c, state, f->ac, 0);

  384.         if (f->ac == AC_RANGE_CUSTOM_TAB) {

  385.             for (i = 1; i < 256; i++)

  386.                 put_symbol(c, state,

  387.                            f->state_transition[i] - c->one_state[i], 1);

  388.         }

  389.         put_symbol(c, state, f->colorspace, 0); // YUV cs type

  390.         if (f->version > 0)

  391.             put_symbol(c, state, f->bits_per_raw_sample, 0);

  392.         put_rac(c, state, f->chroma_planes);

  393.         put_symbol(c, state, f->chroma_h_shift, 0);

  394.         put_symbol(c, state, f->chroma_v_shift, 0);

  395.         put_rac(c, state, f->transparency);

  396. 

  397.         write_quant_tables(c, f->quant_table);

  398.     }

  399. }

  400. 

  401. static int write_extradata(FFV1Context *f)

  402. {

  403.     RangeCoder *const c = &f->c;

  404.     uint8_t state[CONTEXT_SIZE];

  405.     int i, j, k;

  406.     uint8_t state2[32][CONTEXT_SIZE];

  407.     unsigned v;

  408. 

  409.     memset(state2, 128, sizeof(state2));

  410.     memset(state, 128, sizeof(state));

  411. 

  412.     f->avctx->extradata_size = 10000 + 4 +

  413.                                     (11 * 11 * 5 * 5 * 5 + 11 * 11 * 11) * 32;

  414.     f->avctx->extradata = av_malloc(f->avctx->extradata_size);

  415.     ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);

  416.     ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);

  417. 

  418.     put_symbol(c, state, f->version, 0);

  419.     if (f->version > 1) {

  420.         if (f->version == 3)

  421.             f->minor_version = 2;

  422.         put_symbol(c, state, f->minor_version, 0);

  423.     }

  424. 

  425.     put_symbol(c, state, f->ac, 0);

  426.     if (f->ac == AC_RANGE_CUSTOM_TAB)

  427.         for (i = 1; i < 256; i++)

  428.             put_symbol(c, state, f->state_transition[i] - c->one_state[i], 1);

  429. 

  430.     put_symbol(c, state, f->colorspace, 0); // YUV cs type

  431.     put_symbol(c, state, f->bits_per_raw_sample, 0);

  432.     put_rac(c, state, f->chroma_planes);

  433.     put_symbol(c, state, f->chroma_h_shift, 0);

  434.     put_symbol(c, state, f->chroma_v_shift, 0);

  435.     put_rac(c, state, f->transparency);

  436.     put_symbol(c, state, f->num_h_slices - 1, 0);

  437.     put_symbol(c, state, f->num_v_slices - 1, 0);

  438. 

  439.     put_symbol(c, state, f->quant_table_count, 0);

  440.     for (i = 0; i < f->quant_table_count; i++)

  441.         write_quant_tables(c, f->quant_tables[i]);

  442. 

  443.     for (i = 0; i < f->quant_table_count; i++) {

  444.         for (j = 0; j < f->context_count[i] * CONTEXT_SIZE; j++)

  445.             if (f->initial_states[i] && f->initial_states[i][0][j] != 128)

  446.                 break;

  447.         if (j < f->context_count[i] * CONTEXT_SIZE) {

  448.             put_rac(c, state, 1);

  449.             for (j = 0; j < f->context_count[i]; j++)

  450.                 for (k = 0; k < CONTEXT_SIZE; k++) {

  451.                     int pred = j ? f->initial_states[i][j - 1][k] : 128;

  452.                     put_symbol(c, state2[k],

  453.                                (int8_t)(f->initial_states[i][j][k] - pred), 1);

  454.                 }

  455.         } else {

  456.             put_rac(c, state, 0);

  457.         }

  458.     }

  459. 

  460.     if (f->version > 2) {

  461.         put_symbol(c, state, f->ec, 0);

  462.     }

  463. 

  464.     f->avctx->extradata_size = ff_rac_terminate(c);

  465. 

  466.     v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0,

  467.                f->avctx->extradata, f->avctx->extradata_size);

  468.     AV_WL32(f->avctx->extradata + f->avctx->extradata_size, v);

  469.     f->avctx->extradata_size += 4;

  470. 

  471.     return 0;

  472. }

  473. 

  474. static int sort_stt(FFV1Context *s, uint8_t stt[256])

  475. {

  476.     int i, i2, changed, print = 0;

  477. 

  478.     do {

  479.         changed = 0;

  480.         for (i = 12; i < 244; i++) {

  481.             for (i2 = i + 1; i2 < 245 && i2 < i + 4; i2++) {

  482. 

  483. #define COST(old, new)                                      \

  484.     s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) +     \

  485.     s->rc_stat[old][1] * -log2((new)         / 256.0)

  486. 

  487. #define COST2(old, new)                         \

  488.     COST(old, new) + COST(256 - (old), 256 - (new))

  489. 

  490.                 double size0 = COST2(i,  i) + COST2(i2, i2);

  491.                 double sizeX = COST2(i, i2) + COST2(i2, i);

  492.                 if (sizeX < size0 && i != 128 && i2 != 128) {

  493.                     int j;

  494.                     FFSWAP(int, stt[i], stt[i2]);

  495.                     FFSWAP(int, s->rc_stat[i][0], s->rc_stat[i2][0]);

  496.                     FFSWAP(int, s->rc_stat[i][1], s->rc_stat[i2][1]);

  497.                     if (i != 256 - i2) {

  498.                         FFSWAP(int, stt[256 - i], stt[256 - i2]);

  499.                         FFSWAP(int, s->rc_stat[256 - i][0], s->rc_stat[256 - i2][0]);

  500.                         FFSWAP(int, s->rc_stat[256 - i][1], s->rc_stat[256 - i2][1]);

  501.                     }

  502.                     for (j = 1; j < 256; j++) {

  503.                         if (stt[j] == i)

  504.                             stt[j] = i2;

  505.                         else if (stt[j] == i2)

  506.                             stt[j] = i;

  507.                         if (i != 256 - i2) {

  508.                             if (stt[256 - j] == 256 - i)

  509.                                 stt[256 - j] = 256 - i2;

  510.                             else if (stt[256 - j] == 256 - i2)

  511.                                 stt[256 - j] = 256 - i;

  512.                         }

  513.                     }

  514.                     print = changed = 1;

  515.                 }

  516.             }

  517.         }

  518.     } while (changed);

  519.     return print;

  520. }

  521. 

  522. static av_cold int init_slices_state(FFV1Context *f)

  523. {

  524.     int i, ret;

  525.     for (i = 0; i < f->slice_count; i++) {

  526.         FFV1Context *fs = f->slice_context[i];

  527.         if ((ret = ffv1_init_slice_state(f, fs)) < 0)

  528.             return AVERROR(ENOMEM);

  529.     }

  530.     return 0;

  531. }

  532. 

  533. static av_cold int ffv1_encode_init(AVCodecContext *avctx)

  534. {

  535.     FFV1Context *s = avctx->priv_data;

  536.     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);

  537.     int i, j, k, m, ret;

  538. 

  539.     ffv1_common_init(avctx);

  540. 

  541.     s->version = 0;

  542. 

  543.     switch (avctx->level) {

  544.     case 3:

  545.         break;

  546.     case 2:

  547.         av_log(avctx, AV_LOG_ERROR,

  548.                "Version 2 had been deemed non-standard and deprecated "

  549.                "the support for it had been removed\n");

  550.         return AVERROR(ENOSYS);

  551.     case 1:

  552.     case 0:

  553.         if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {

  554.             av_log(avctx, AV_LOG_ERROR,

  555.                    "Multiple pass encoding requires version 3.\n");

  556.             return AVERROR(ENOSYS);

  557.         }

  558.         if (avctx->slices > 1) {

  559.             av_log(avctx, AV_LOG_ERROR,

  560.                    "Multiple slices support requires version 3.\n");

  561.             return AVERROR(ENOSYS);

  562.         }

  563.         break;

  564.     case FF_LEVEL_UNKNOWN:

  565.         if ((avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) ||

  566.             avctx->slices > 1)

  567.             s->version = 3;

  568.         else

  569.             s->version = 0;

  570.         break;

  571.     default:

  572.         av_log(avctx, AV_LOG_ERROR, "Version %d not supported\n",

  573.                avctx->level);

  574.         return AVERROR(ENOSYS);

  575.     }

  576. 

  577.     if (s->ec < 0) {

  578.         s->ec = (s->version >= 3);

  579.     }

  580. 

  581. #if FF_API_CODER_TYPE

  582. FF_DISABLE_DEPRECATION_WARNINGS

  583.     if (avctx->coder_type != -1)

  584.         s->ac = avctx->coder_type > 0 ? AC_RANGE_CUSTOM_TAB : AC_GOLOMB_RICE;

  585. FF_ENABLE_DEPRECATION_WARNINGS

  586. #endif

  587. 

  588.     s->plane_count = 3;

  589.     switch (avctx->pix_fmt) {

  590.     case AV_PIX_FMT_YUV444P9:

  591.     case AV_PIX_FMT_YUV422P9:

  592.     case AV_PIX_FMT_YUV420P9:

  593.         if (!avctx->bits_per_raw_sample)

  594.             s->bits_per_raw_sample = 9;

  595.     case AV_PIX_FMT_YUV444P10:

  596.     case AV_PIX_FMT_YUV420P10:

  597.     case AV_PIX_FMT_YUV422P10:

  598.         s->packed_at_lsb = 1;

  599.         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)

  600.             s->bits_per_raw_sample = 10;

  601.     case AV_PIX_FMT_GRAY16:

  602.     case AV_PIX_FMT_YUV444P16:

  603.     case AV_PIX_FMT_YUV422P16:

  604.     case AV_PIX_FMT_YUV420P16:

  605.         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample) {

  606.             s->bits_per_raw_sample = 16;

  607.         } else if (!s->bits_per_raw_sample) {

  608.             s->bits_per_raw_sample = avctx->bits_per_raw_sample;

  609.         }

  610.         if (s->bits_per_raw_sample <= 8) {

  611.             av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");

  612.             return AVERROR_INVALIDDATA;

  613.         }

  614.         if (s->ac == AC_GOLOMB_RICE) {

  615.             av_log(avctx, AV_LOG_INFO,

  616.                    "bits_per_raw_sample > 8, forcing range coder\n");

  617.             s->ac = AC_RANGE_CUSTOM_TAB;

  618.         }

  619.         s->version = FFMAX(s->version, 1);

  620.     case AV_PIX_FMT_GRAY8:

  621.     case AV_PIX_FMT_YUV444P:

  622.     case AV_PIX_FMT_YUV440P:

  623.     case AV_PIX_FMT_YUV422P:

  624.     case AV_PIX_FMT_YUV420P:

  625.     case AV_PIX_FMT_YUV411P:

  626.     case AV_PIX_FMT_YUV410P:

  627.         s->chroma_planes = desc->nb_components < 3 ? 0 : 1;

  628.         s->colorspace    = 0;

  629.         break;

  630.     case AV_PIX_FMT_YUVA444P:

  631.     case AV_PIX_FMT_YUVA422P:

  632.     case AV_PIX_FMT_YUVA420P:

  633.         s->chroma_planes = 1;

  634.         s->colorspace    = 0;

  635.         s->transparency  = 1;

  636.         break;

  637.     case AV_PIX_FMT_RGB32:

  638.         s->colorspace   = 1;

  639.         s->transparency = 1;

  640.         break;

  641.     case AV_PIX_FMT_GBRP9:

  642.         if (!avctx->bits_per_raw_sample)

  643.             s->bits_per_raw_sample = 9;

  644.     case AV_PIX_FMT_GBRP10:

  645.         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)

  646.             s->bits_per_raw_sample = 10;

  647.     case AV_PIX_FMT_GBRP16:

  648.         if (!avctx->bits_per_raw_sample && !s->bits_per_raw_sample)

  649.             s->bits_per_raw_sample = 16;

  650.         else if (!s->bits_per_raw_sample)

  651.             s->bits_per_raw_sample = avctx->bits_per_raw_sample;

  652.         s->colorspace    = 1;

  653.         s->chroma_planes = 1;

  654.         s->version       = FFMAX(s->version, 1);

  655.         break;

  656.     default:

  657.         av_log(avctx, AV_LOG_ERROR, "format not supported\n");

  658.         return AVERROR_INVALIDDATA;

  659.     }

  660.     if (s->transparency) {

  661.         av_log(

  662.             avctx, AV_LOG_WARNING,

  663.             "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");

  664.     }

  665. #if FF_API_PRIVATE_OPT

  666. FF_DISABLE_DEPRECATION_WARNINGS

  667.     if (avctx->context_model)

  668.         s->context_model = avctx->context_model;

  669.     if (avctx->context_model > 1U) {

  670.         av_log(avctx, AV_LOG_ERROR,

  671.                "Invalid context model %d, valid values are 0 and 1\n",

  672.                avctx->context_model);

  673.         return AVERROR(EINVAL);

  674.     }

  675. FF_ENABLE_DEPRECATION_WARNINGS

  676. #endif

  677. 

  678.     if (s->ac == AC_RANGE_CUSTOM_TAB)

  679.         for (i = 1; i < 256; i++)

  680.             s->state_transition[i] = ffv1_ver2_state[i];

  681. 

  682.     for (i = 0; i < 256; i++) {

  683.         s->quant_table_count = 2;

  684.         if (s->bits_per_raw_sample <= 8) {

  685.             s->quant_tables[0][0][i] = ffv1_quant11[i];

  686.             s->quant_tables[0][1][i] = ffv1_quant11[i] * 11;

  687.             s->quant_tables[0][2][i] = ffv1_quant11[i] * 11 * 11;

  688.             s->quant_tables[1][0][i] = ffv1_quant11[i];

  689.             s->quant_tables[1][1][i] = ffv1_quant11[i] * 11;

  690.             s->quant_tables[1][2][i] = ffv1_quant5[i]  * 11 * 11;

  691.             s->quant_tables[1][3][i] = ffv1_quant5[i]  *  5 * 11 * 11;

  692.             s->quant_tables[1][4][i] = ffv1_quant5[i]  *  5 *  5 * 11 * 11;

  693.         } else {

  694.             s->quant_tables[0][0][i] = ffv1_quant9_10bit[i];

  695.             s->quant_tables[0][1][i] = ffv1_quant9_10bit[i] * 11;

  696.             s->quant_tables[0][2][i] = ffv1_quant9_10bit[i] * 11 * 11;

  697.             s->quant_tables[1][0][i] = ffv1_quant9_10bit[i];

  698.             s->quant_tables[1][1][i] = ffv1_quant9_10bit[i] * 11;

  699.             s->quant_tables[1][2][i] = ffv1_quant5_10bit[i] * 11 * 11;

  700.             s->quant_tables[1][3][i] = ffv1_quant5_10bit[i] *  5 * 11 * 11;

  701.             s->quant_tables[1][4][i] = ffv1_quant5_10bit[i] *  5 *  5 * 11 * 11;

  702.         }

  703.     }

  704.     s->context_count[0] = (11 * 11 * 11        + 1) / 2;

  705.     s->context_count[1] = (11 * 11 * 5 * 5 * 5 + 1) / 2;

  706.     memcpy(s->quant_table, s->quant_tables[s->context_model],

  707.            sizeof(s->quant_table));

  708. 

  709.     for (i = 0; i < s->plane_count; i++) {

  710.         PlaneContext *const p = &s->plane[i];

  711. 

  712.         memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));

  713.         p->quant_table_index = s->context_model;

  714.         p->context_count     = s->context_count[p->quant_table_index];

  715.     }

  716. 

  717.     if ((ret = ffv1_allocate_initial_states(s)) < 0)

  718.         return ret;

  719. 

  720. #if FF_API_CODED_FRAME

  721. FF_DISABLE_DEPRECATION_WARNINGS

  722.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;

  723. FF_ENABLE_DEPRECATION_WARNINGS

  724. #endif

  725. 

  726.     if (!s->transparency)

  727.         s->plane_count = 2;

  728. 

  729.     av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift,

  730.                                      &s->chroma_v_shift);

  731. 

  732.     s->picture_number = 0;

  733. 

  734.     if (avctx->flags & (AV_CODEC_FLAG_PASS1 | AV_CODEC_FLAG_PASS2)) {

  735.         for (i = 0; i < s->quant_table_count; i++) {

  736.             s->rc_stat2[i] = av_mallocz(s->context_count[i] *

  737.                                         sizeof(*s->rc_stat2[i]));

  738.             if (!s->rc_stat2[i])

  739.                 return AVERROR(ENOMEM);

  740.         }

  741.     }

  742.     if (avctx->stats_in) {

  743.         char *p = avctx->stats_in;

  744.         uint8_t best_state[256][256];

  745.         int gob_count = 0;

  746.         char *next;

  747. 

  748.         av_assert0(s->version > 2);

  749. 

  750.         for (;; ) {

  751.             for (j = 0; j < 256; j++)

  752.                 for (i = 0; i < 2; i++) {

  753.                     s->rc_stat[j][i] = strtol(p, &next, 0);

  754.                     if (next == p) {

  755.                         av_log(avctx, AV_LOG_ERROR,

  756.                                "2Pass file invalid at %d %d [%s]\n", j, i, p);

  757.                         return AVERROR_INVALIDDATA;

  758.                     }

  759.                     p = next;

  760.                 }

  761.             for (i = 0; i < s->quant_table_count; i++)

  762.                 for (j = 0; j < s->context_count[i]; j++) {

  763.                     for (k = 0; k < 32; k++)

  764.                         for (m = 0; m < 2; m++) {

  765.                             s->rc_stat2[i][j][k][m] = strtol(p, &next, 0);

  766.                             if (next == p) {

  767.                                 av_log(avctx, AV_LOG_ERROR,

  768.                                        "2Pass file invalid at %d %d %d %d [%s]\n",

  769.                                        i, j, k, m, p);

  770.                                 return AVERROR_INVALIDDATA;

  771.                             }

  772.                             p = next;

  773.                         }

  774.                 }

  775.             gob_count = strtol(p, &next, 0);

  776.             if (next == p || gob_count <= 0) {

  777.                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");

  778.                 return AVERROR_INVALIDDATA;

  779.             }

  780.             p = next;

  781.             while (*p == '\n' || *p == ' ')

  782.                 p++;

  783.             if (p[0] == 0)

  784.                 break;

  785.         }

  786.         sort_stt(s, s->state_transition);

  787. 

  788.         find_best_state(best_state, s->state_transition);

  789. 

  790.         for (i = 0; i < s->quant_table_count; i++) {

  791.             for (j = 0; j < s->context_count[i]; j++)

  792.                 for (k = 0; k < 32; k++) {

  793.                     double p = 128;

  794.                     if (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1]) {

  795.                         p = 256.0 * s->rc_stat2[i][j][k][1] /

  796.                             (s->rc_stat2[i][j][k][0] + s->rc_stat2[i][j][k][1]);

  797.                     }

  798.                     s->initial_states[i][j][k] =

  799.                         best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0] +

  800.                                                                        s->rc_stat2[i][j][k][1]) /

  801.                                                                       gob_count, 0, 255)];

  802.                 }

  803.         }

  804.     }

  805. 

  806.     if (s->version > 1) {

  807.         for (s->num_v_slices = 2; s->num_v_slices < 9; s->num_v_slices++)

  808.             for (s->num_h_slices = s->num_v_slices;

  809.                  s->num_h_slices < 2 * s->num_v_slices; s->num_h_slices++)

  810.                 if (avctx->slices == s->num_h_slices * s->num_v_slices &&

  811.                     avctx->slices <= 64 || !avctx->slices)

  812.                     goto slices_ok;

  813.         av_log(avctx, AV_LOG_ERROR,

  814.                "Unsupported number %d of slices requested, please specify a "

  815.                "supported number with -slices (ex:4,6,9,12,16, ...)\n",

  816.                avctx->slices);

  817.         return AVERROR(ENOSYS);

  818. slices_ok:

  819.         write_extradata(s);

  820.     }

  821. 

  822.     if ((ret = ffv1_init_slice_contexts(s)) < 0)

  823.         return ret;

  824.     if ((ret = init_slices_state(s)) < 0)

  825.         return ret;

  826. 

  827. #define STATS_OUT_SIZE 1024 * 1024 * 6

  828.     if (avctx->flags & AV_CODEC_FLAG_PASS1) {

  829.         avctx->stats_out = av_mallocz(STATS_OUT_SIZE);

  830.         for (i = 0; i < s->quant_table_count; i++)

  831.             for (j = 0; j < s->slice_count; j++) {

  832.                 FFV1Context *sf = s->slice_context[j];

  833.                 av_assert0(!sf->rc_stat2[i]);

  834.                 sf->rc_stat2[i] = av_mallocz(s->context_count[i] *

  835.                                              sizeof(*sf->rc_stat2[i]));

  836.                 if (!sf->rc_stat2[i])

  837.                     return AVERROR(ENOMEM);

  838.             }

  839.     }

  840. 

  841.     return 0;

  842. }

  843. 

  844. static void encode_slice_header(FFV1Context *f, FFV1Context *fs)

  845. {

  846.     RangeCoder *c = &fs->c;

  847.     uint8_t state[CONTEXT_SIZE];

  848.     int j;

  849.     memset(state, 128, sizeof(state));

  850. 

  851.     put_symbol(c, state, (fs->slice_x + 1) * f->num_h_slices / f->width, 0);

  852.     put_symbol(c, state, (fs->slice_y + 1) * f->num_v_slices / f->height, 0);

  853.     put_symbol(c, state, (fs->slice_width + 1) * f->num_h_slices / f->width - 1,

  854.                0);

  855.     put_symbol(c, state,

  856.                (fs->slice_height + 1) * f->num_v_slices / f->height - 1,

  857.                0);

  858.     for (j = 0; j < f->plane_count; j++) {

  859.         put_symbol(c, state, f->plane[j].quant_table_index, 0);

  860.         av_assert0(f->plane[j].quant_table_index == f->context_model);

  861.     }

  862.     if (!f->frame->interlaced_frame)

  863.         put_symbol(c, state, 3, 0);

  864.     else

  865.         put_symbol(c, state, 1 + !f->frame->top_field_first, 0);

  866.     put_symbol(c, state, f->frame->sample_aspect_ratio.num, 0);

  867.     put_symbol(c, state, f->frame->sample_aspect_ratio.den, 0);

  868. }

  869. 

  870. static int encode_slice(AVCodecContext *c, void *arg)

  871. {

  872.     FFV1Context *fs  = *(void **)arg;

  873.     FFV1Context *f   = fs->avctx->priv_data;

  874.     int width        = fs->slice_width;

  875.     int height       = fs->slice_height;

  876.     int x            = fs->slice_x;

  877.     int y            = fs->slice_y;

  878.     const AVFrame *const p = f->frame;

  879.     const int ps     = (av_pix_fmt_desc_get(c->pix_fmt)->flags & AV_PIX_FMT_FLAG_PLANAR)

  880.                        ? (f->bits_per_raw_sample > 8) + 1

  881.                        : 4;

  882. 

  883.     if (f->key_frame)

  884.         ffv1_clear_slice_state(f, fs);

  885.     if (f->version > 2) {

  886.         encode_slice_header(f, fs);

  887.     }

  888.     if (fs->ac == AC_GOLOMB_RICE) {

  889.         if (f->version > 2)

  890.             put_rac(&fs->c, (uint8_t[]) { 129 }, 0);

  891.         fs->ac_byte_count = f->version > 2 || (!x && !y) ? ff_rac_terminate( &fs->c) : 0;

  892.         init_put_bits(&fs->pb, fs->c.bytestream_start + fs->ac_byte_count,

  893.                       fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);

  894.     }

  895. 

  896.     if (f->colorspace == 0) {

  897.         const int chroma_width  = AV_CEIL_RSHIFT(width,  f->chroma_h_shift);

  898.         const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);

  899.         const int cx            = x >> f->chroma_h_shift;

  900.         const int cy            = y >> f->chroma_v_shift;

  901. 

  902.         encode_plane(fs, p->data[0] + ps * x + y * p->linesize[0],

  903.                      width, height, p->linesize[0], 0);

  904. 

  905.         if (f->chroma_planes) {

  906.             encode_plane(fs, p->data[1] + ps * cx + cy * p->linesize[1],

  907.                          chroma_width, chroma_height, p->linesize[1], 1);

  908.             encode_plane(fs, p->data[2] + ps * cx + cy * p->linesize[2],

  909.                          chroma_width, chroma_height, p->linesize[2], 1);

  910.         }

  911.         if (fs->transparency)

  912.             encode_plane(fs, p->data[3] + ps * x + y * p->linesize[3], width,

  913.                          height, p->linesize[3], 2);

  914.     } else {

  915.         const uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],

  916.                                      p->data[1] + ps * x + y * p->linesize[1],

  917.                                      p->data[2] + ps * x + y * p->linesize[2] };

  918.         encode_rgb_frame(fs, planes, width, height, p->linesize);

  919.     }

  920.     emms_c();

  921. 

  922.     return 0;

  923. }

  924. 

  925. static int ffv1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,

  926.                         const AVFrame *pict, int *got_packet)

  927. {

  928.     FFV1Context *f      = avctx->priv_data;

  929.     RangeCoder *const c = &f->slice_context[0]->c;

  930.     int used_count      = 0;

  931.     uint8_t keystate    = 128;

  932.     uint8_t *buf_p;

  933.     int i, ret;

  934. 

  935.     f->frame = pict;

  936. 

  937.     if ((ret = ff_alloc_packet(pkt, avctx->width * avctx->height *

  938.                              ((8 * 2 + 1 + 1) * 4) / 8 +

  939.                              AV_INPUT_BUFFER_MIN_SIZE)) < 0) {

  940.         av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");

  941.         return ret;

  942.     }

  943. 

  944.     ff_init_range_encoder(c, pkt->data, pkt->size);

  945.     ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);

  946. 

  947.     if (avctx->gop_size == 0 || f->picture_number % avctx->gop_size == 0) {

  948.         put_rac(c, &keystate, 1);

  949.         f->key_frame = 1;

  950.         f->gob_count++;

  951.         write_header(f);

  952.     } else {

  953.         put_rac(c, &keystate, 0);

  954.         f->key_frame = 0;

  955.     }

  956. 

  957.     if (f->ac == AC_RANGE_CUSTOM_TAB) {

  958.         int i;

  959.         for (i = 1; i < 256; i++) {

  960.             c->one_state[i]        = f->state_transition[i];

  961.             c->zero_state[256 - i] = 256 - c->one_state[i];

  962.         }

  963.     }

  964. 

  965.     for (i = 1; i < f->slice_count; i++) {

  966.         FFV1Context *fs = f->slice_context[i];

  967.         uint8_t *start  = pkt->data +

  968.                           (pkt->size - used_count) * (int64_t)i / f->slice_count;

  969.         int len = pkt->size / f->slice_count;

  970.         ff_init_range_encoder(&fs->c, start, len);

  971.     }

  972.     avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL,

  973.                    f->slice_count, sizeof(void *));

  974. 

  975.     buf_p = pkt->data;

  976.     for (i = 0; i < f->slice_count; i++) {

  977.         FFV1Context *fs = f->slice_context[i];

  978.         int bytes;

  979. 

  980.         if (fs->ac != AC_GOLOMB_RICE) {

  981.             uint8_t state = 129;

  982.             put_rac(&fs->c, &state, 0);

  983.             bytes = ff_rac_terminate(&fs->c);

  984.         } else {

  985.             flush_put_bits(&fs->pb); // FIXME: nicer padding

  986.             bytes = fs->ac_byte_count + (put_bits_count(&fs->pb) + 7) / 8;

  987.         }

  988.         if (i > 0 || f->version > 2) {

  989.             av_assert0(bytes < pkt->size / f->slice_count);

  990.             memmove(buf_p, fs->c.bytestream_start, bytes);

  991.             av_assert0(bytes < (1 << 24));

  992.             AV_WB24(buf_p + bytes, bytes);

  993.             bytes += 3;

  994.         }

  995.         if (f->ec) {

  996.             unsigned v;

  997.             buf_p[bytes++] = 0;

  998.             v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);

  999.             AV_WL32(buf_p + bytes, v);

  1000.             bytes += 4;

  1001.         }

  1002.         buf_p += bytes;

  1003.     }

  1004. 

  1005.     if ((avctx->flags & AV_CODEC_FLAG_PASS1) && (f->picture_number & 31) == 0) {

  1006.         int j, k, m;

  1007.         char *p   = avctx->stats_out;

  1008.         char *end = p + STATS_OUT_SIZE;

  1009. 

  1010.         memset(f->rc_stat, 0, sizeof(f->rc_stat));

  1011.         for (i = 0; i < f->quant_table_count; i++)

  1012.             memset(f->rc_stat2[i], 0, f->context_count[i] * sizeof(*f->rc_stat2[i]));

  1013. 

  1014.         for (j = 0; j < f->slice_count; j++) {

  1015.             FFV1Context *fs = f->slice_context[j];

  1016.             for (i = 0; i < 256; i++) {

  1017.                 f->rc_stat[i][0] += fs->rc_stat[i][0];

  1018.                 f->rc_stat[i][1] += fs->rc_stat[i][1];

  1019.             }

  1020.             for (i = 0; i < f->quant_table_count; i++) {

  1021.                 for (k = 0; k < f->context_count[i]; k++)

  1022.                     for (m = 0; m < 32; m++) {

  1023.                         f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];

  1024.                         f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];

  1025.                     }

  1026.             }

  1027.         }

  1028. 

  1029.         for (j = 0; j < 256; j++) {

  1030.             snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",

  1031.                      f->rc_stat[j][0], f->rc_stat[j][1]);

  1032.             p += strlen(p);

  1033.         }

  1034.         snprintf(p, end - p, "\n");

  1035. 

  1036.         for (i = 0; i < f->quant_table_count; i++) {

  1037.             for (j = 0; j < f->context_count[i]; j++)

  1038.                 for (m = 0; m < 32; m++) {

  1039.                     snprintf(p, end - p, "%" PRIu64 " %" PRIu64 " ",

  1040.                              f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);

  1041.                     p += strlen(p);

  1042.                 }

  1043.         }

  1044.         snprintf(p, end - p, "%d\n", f->gob_count);

  1045.     } else if (avctx->flags & AV_CODEC_FLAG_PASS1)

  1046.         avctx->stats_out[0] = '\0';

  1047. 

  1048. #if FF_API_CODED_FRAME

  1049. FF_DISABLE_DEPRECATION_WARNINGS

  1050.     avctx->coded_frame->key_frame = f->key_frame;

  1051. FF_ENABLE_DEPRECATION_WARNINGS

  1052. #endif

  1053. 

  1054.     f->picture_number++;

  1055.     pkt->size   = buf_p - pkt->data;

  1056.     pkt->flags |= AV_PKT_FLAG_KEY * f->key_frame;

  1057.     *got_packet = 1;

  1058. 

  1059.     return 0;

  1060. }

  1061. 

  1062. static av_cold int ffv1_encode_close(AVCodecContext *avctx)

  1063. {

  1064.     ffv1_close(avctx);

  1065.     return 0;

  1066. }

  1067. 

  1068. #define OFFSET(x) offsetof(FFV1Context, x)

  1069. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

  1070. static const AVOption options[] = {

  1071.     { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_INT,

  1072.              { .i64 = -1 }, -1, 1, VE },

  1073.     { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,

  1074.             { .i64 = AC_GOLOMB_RICE }, 0, 2, VE, "coder" },

  1075.         { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,

  1076.             { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },

  1077.         { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,

  1078.             { .i64 = AC_RANGE_DEFAULT_TAB }, INT_MIN, INT_MAX, VE, "coder" },

  1079.         { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,

  1080.             { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "coder" },

  1081.     { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,

  1082.             { .i64 = 0 }, 0, 1, VE },

  1083. 

  1084.     { NULL }

  1085. };

  1086. 

  1087. static const AVClass class = {

  1088.     .class_name = "ffv1 encoder",

  1089.     .item_name  = av_default_item_name,

  1090.     .option     = options,

  1091.     .version    = LIBAVUTIL_VERSION_INT,

  1092. };

  1093. 

  1094. #if FF_API_CODER_TYPE

  1095. static const AVCodecDefault ffv1_defaults[] = {

  1096.     { "coder", "-1" },

  1097.     { NULL },

  1098. };

  1099. #endif

  1100. 

  1101. AVCodec ff_ffv1_encoder = {

  1102.     .name           = "ffv1",

  1103.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  1104.     .type           = AVMEDIA_TYPE_VIDEO,

  1105.     .id             = AV_CODEC_ID_FFV1,

  1106.     .priv_data_size = sizeof(FFV1Context),

  1107.     .init           = ffv1_encode_init,

  1108.     .encode2        = ffv1_encode_frame,

  1109.     .close          = ffv1_encode_close,

  1110.     .capabilities   = AV_CODEC_CAP_SLICE_THREADS,

  1111.     .pix_fmts       = (const enum AVPixelFormat[]) {

  1112.         AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUV422P,   AV_PIX_FMT_YUV444P,

  1113.         AV_PIX_FMT_YUV411P,   AV_PIX_FMT_YUV410P,

  1114.         AV_PIX_FMT_YUV444P9,  AV_PIX_FMT_YUV422P9,  AV_PIX_FMT_YUV420P9,

  1115.         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,

  1116.         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,

  1117.         AV_PIX_FMT_RGB32,

  1118.         AV_PIX_FMT_GBRP9,     AV_PIX_FMT_GBRP10,

  1119.         AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,  AV_PIX_FMT_YUVA444P,

  1120.         AV_PIX_FMT_GRAY16,    AV_PIX_FMT_GRAY8,

  1121.         AV_PIX_FMT_NONE

  1122. 

  1123.     },

  1124. #if FF_API_CODER_TYPE

  1125.     .defaults       = ffv1_defaults,

  1126. #endif

  1127.     .priv_class     = &class,

  1128. };