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FFmpeg/libavcodec/ffv1.c

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  1. /*

  2.  * FFV1 codec for libavcodec

  3.  *

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

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

  8.  * FFmpeg is free software; you can redistribute it and/or

  9.  * modify it under the terms of the GNU Lesser General Public

  10.  * License as published by the Free Software Foundation; either

  11.  * version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * FFmpeg is distributed in the hope that it will be useful,

  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  16.  * Lesser General Public License for more details.

  17.  *

  18.  * You should have received a copy of the GNU Lesser General Public

  19.  * License along with FFmpeg; if not, write to the Free Software

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. /**

  24.  * @file

  25.  * FF Video Codec 1 (a lossless codec)

  26.  */

  27. 

  28. #include "avcodec.h"

  29. #include "internal.h"

  30. #include "get_bits.h"

  31. #include "put_bits.h"

  32. #include "dsputil.h"

  33. #include "rangecoder.h"

  34. #include "golomb.h"

  35. #include "mathops.h"

  36. #include "libavutil/pixdesc.h"

  37. #include "libavutil/avassert.h"

  38. #include "libavutil/crc.h"

  39. 

  40. #ifdef __INTEL_COMPILER

  41. #undef av_flatten

  42. #define av_flatten

  43. #endif

  44. 

  45. #define MAX_PLANES 4

  46. #define CONTEXT_SIZE 32

  47. 

  48. #define MAX_QUANT_TABLES 8

  49. #define MAX_CONTEXT_INPUTS 5

  50. 

  51. extern const uint8_t ff_log2_run[41];

  52. 

  53. static const int8_t quant5_10bit[256]={

  54.  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,

  55.  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

  56.  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

  57.  1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  58.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  59.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  60.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  61.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  62. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  63. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  64. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  65. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  66. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,

  67. -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,

  68. -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,

  69. -1,-1,-1,-1,-1,-1,-0,-0,-0,-0,-0,-0,-0,-0,-0,-0,

  70. };

  71. 

  72. static const int8_t quant5[256]={

  73.  0, 1, 1, 1, 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, 2, 2, 2,

  80.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  81. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  82. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  83. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  84. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  85. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  86. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  87. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  88. -2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1,

  89. };

  90. 

  91. static const int8_t quant9_10bit[256]={

  92.  0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,

  93.  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,

  94.  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,

  95.  3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,

  96.  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  97.  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  98.  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  99.  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  100. -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,

  101. -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,

  102. -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-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,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,

  105. -3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,

  106. -3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,

  107. -2,-2,-2,-2,-1,-1,-1,-1,-1,-1,-1,-1,-0,-0,-0,-0,

  108. };

  109. 

  110. static const int8_t quant11[256]={

  111.  0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,

  112.  4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  113.  4, 4, 4, 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, 5, 5,

  116.  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,

  117.  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,

  118.  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,

  119. -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,

  120. -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,

  121. -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,

  122. -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,

  123. -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,

  124. -5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4,

  125. -4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,

  126. -4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1,

  127. };

  128. 

  129. static const uint8_t ver2_state[256]= {

  130.    0,  10,  10,  10,  10,  16,  16,  16,  28,  16,  16,  29,  42,  49,  20,  49,

  131.   59,  25,  26,  26,  27,  31,  33,  33,  33,  34,  34,  37,  67,  38,  39,  39,

  132.   40,  40,  41,  79,  43,  44,  45,  45,  48,  48,  64,  50,  51,  52,  88,  52,

  133.   53,  74,  55,  57,  58,  58,  74,  60, 101,  61,  62,  84,  66,  66,  68,  69,

  134.   87,  82,  71,  97,  73,  73,  82,  75, 111,  77,  94,  78,  87,  81,  83,  97,

  135.   85,  83,  94,  86,  99,  89,  90,  99, 111,  92,  93, 134,  95,  98, 105,  98,

  136.  105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,

  137.  115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,

  138.  165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,

  139.  147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,

  140.  172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,

  141.  175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,

  142.  197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,

  143.  209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,

  144.  226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,

  145.  241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,

  146. };

  147. 

  148. typedef struct VlcState{

  149.     int16_t drift;

  150.     uint16_t error_sum;

  151.     int8_t bias;

  152.     uint8_t count;

  153. } VlcState;

  154. 

  155. typedef struct PlaneContext{

  156.     int16_t quant_table[MAX_CONTEXT_INPUTS][256];

  157.     int quant_table_index;

  158.     int context_count;

  159.     uint8_t (*state)[CONTEXT_SIZE];

  160.     VlcState *vlc_state;

  161.     uint8_t interlace_bit_state[2];

  162. } PlaneContext;

  163. 

  164. #define MAX_SLICES 256

  165. 

  166. typedef struct FFV1Context{

  167.     AVCodecContext *avctx;

  168.     RangeCoder c;

  169.     GetBitContext gb;

  170.     PutBitContext pb;

  171.     uint64_t rc_stat[256][2];

  172.     uint64_t (*rc_stat2[MAX_QUANT_TABLES])[32][2];

  173.     int version;

  174.     int minor_version;

  175.     int width, height;

  176.     int chroma_h_shift, chroma_v_shift;

  177.     int chroma_planes;

  178.     int transparency;

  179.     int flags;

  180.     int picture_number;

  181.     AVFrame picture;

  182.     int plane_count;

  183.     int ac;                              ///< 1=range coder <-> 0=golomb rice

  184.     int ac_byte_count;                   ///< number of bytes used for AC coding

  185.     PlaneContext plane[MAX_PLANES];

  186.     int16_t quant_table[MAX_CONTEXT_INPUTS][256];

  187.     int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];

  188.     int context_count[MAX_QUANT_TABLES];

  189.     uint8_t state_transition[256];

  190.     uint8_t (*initial_states[MAX_QUANT_TABLES])[32];

  191.     int run_index;

  192.     int colorspace;

  193.     int16_t *sample_buffer;

  194.     int gob_count;

  195.     int packed_at_lsb;

  196.     int ec;

  197.     int key_frame_ok;

  198. 

  199.     int quant_table_count;

  200. 

  201.     DSPContext dsp;

  202. 

  203.     struct FFV1Context *slice_context[MAX_SLICES];

  204.     int slice_count;

  205.     int num_v_slices;

  206.     int num_h_slices;

  207.     int slice_width;

  208.     int slice_height;

  209.     int slice_x;

  210.     int slice_y;

  211.     int bits_per_raw_sample;

  212. }FFV1Context;

  213. 

  214. static av_always_inline int fold(int diff, int bits){

  215.     if(bits==8)

  216.         diff= (int8_t)diff;

  217.     else{

  218.         diff+= 1<<(bits-1);

  219.         diff&=(1<<bits)-1;

  220.         diff-= 1<<(bits-1);

  221.     }

  222. 

  223.     return diff;

  224. }

  225. 

  226. static inline int predict(int16_t *src, int16_t *last)

  227. {

  228.     const int LT= last[-1];

  229.     const int  T= last[ 0];

  230.     const int L =  src[-1];

  231. 

  232.     return mid_pred(L, L + T - LT, T);

  233. }

  234. 

  235. static inline int get_context(PlaneContext *p, int16_t *src,

  236.                               int16_t *last, int16_t *last2)

  237. {

  238.     const int LT= last[-1];

  239.     const int  T= last[ 0];

  240.     const int RT= last[ 1];

  241.     const int L =  src[-1];

  242. 

  243.     if(p->quant_table[3][127]){

  244.         const int TT= last2[0];

  245.         const int LL=  src[-2];

  246.         return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF]

  247.               +p->quant_table[3][(LL-L) & 0xFF] + p->quant_table[4][(TT-T) & 0xFF];

  248.     }else

  249.         return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF];

  250. }

  251. 

  252. static void find_best_state(uint8_t best_state[256][256], const uint8_t one_state[256]){

  253.     int i,j,k,m;

  254.     double l2tab[256];

  255. 

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

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

  258. 

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

  260.         double best_len[256];

  261.         double p= i/256.0;

  262. 

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

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

  265. 

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

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

  268.             double len=0;

  269.             occ[j]=1.0;

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

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

  272.                 for(m=0; m<256; m++){

  273.                     if(occ[m]){

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

  275.                                       + (1-p)*l2tab[256-m]);

  276.                     }

  277.                 }

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

  279.                     best_len[k]= len;

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

  281.                 }

  282.                 for(m=0; m<256; m++){

  283.                     if(occ[m]){

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

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

  286.                     }

  287.                 }

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

  289.             }

  290.         }

  291.     }

  292. }

  293. 

  294. static av_always_inline av_flatten void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2]){

  295.     int i;

  296. 

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

  298. do{\

  299.     if(rc_stat){\

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

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

  302.     }\

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

  304. }while(0)

  305. 

  306.     if(v){

  307.         const int a= FFABS(v);

  308.         const int e= av_log2(a);

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

  310.         if(e<=9){

  311.             for(i=0; i<e; i++){

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

  313.             }

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

  315. 

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

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

  318.             }

  319. 

  320.             if(is_signed)

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

  322.         }else{

  323.             for(i=0; i<e; i++){

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

  325.             }

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

  327. 

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

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

  330.             }

  331. 

  332.             if(is_signed)

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

  334.         }

  335.     }else{

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

  337.     }

  338. #undef put_rac

  339. }

  340. 

  341. static av_noinline void put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){

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

  343. }

  344. 

  345. static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed){

  346.     if(get_rac(c, state+0))

  347.         return 0;

  348.     else{

  349.         int i, e, a;

  350.         e= 0;

  351.         while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10

  352.             e++;

  353.         }

  354. 

  355.         a= 1;

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

  357.             a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31

  358.         }

  359. 

  360.         e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21

  361.         return (a^e)-e;

  362.     }

  363. }

  364. 

  365. static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed){

  366.     return get_symbol_inline(c, state, is_signed);

  367. }

  368. 

  369. static inline void update_vlc_state(VlcState * const state, const int v){

  370.     int drift= state->drift;

  371.     int count= state->count;

  372.     state->error_sum += FFABS(v);

  373.     drift += v;

  374. 

  375.     if(count == 128){ //FIXME variable

  376.         count >>= 1;

  377.         drift >>= 1;

  378.         state->error_sum >>= 1;

  379.     }

  380.     count++;

  381. 

  382.     if(drift <= -count){

  383.         if(state->bias > -128) state->bias--;

  384. 

  385.         drift += count;

  386.         if(drift <= -count)

  387.             drift= -count + 1;

  388.     }else if(drift > 0){

  389.         if(state->bias <  127) state->bias++;

  390. 

  391.         drift -= count;

  392.         if(drift > 0)

  393.             drift= 0;

  394.     }

  395. 

  396.     state->drift= drift;

  397.     state->count= count;

  398. }

  399. 

  400. static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v, int bits){

  401.     int i, k, code;

  402. //printf("final: %d ", v);

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

  404. 

  405.     i= state->count;

  406.     k=0;

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

  408.         k++;

  409.         i += i;

  410.     }

  411. 

  412.     assert(k<=8);

  413. 

  414. #if 0 // JPEG LS

  415.     if(k==0 && 2*state->drift <= - state->count) code= v ^ (-1);

  416.     else                                         code= v;

  417. #else

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

  419. #endif

  420. 

  421. //printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k);

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

  423. 

  424.     update_vlc_state(state, v);

  425. }

  426. 

  427. static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){

  428.     int k, i, v, ret;

  429. 

  430.     i= state->count;

  431.     k=0;

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

  433.         k++;

  434.         i += i;

  435.     }

  436. 

  437.     assert(k<=8);

  438. 

  439.     v= get_sr_golomb(gb, k, 12, bits);

  440. //printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);

  441. 

  442. #if 0 // JPEG LS

  443.     if(k==0 && 2*state->drift <= - state->count) v ^= (-1);

  444. #else

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

  446. #endif

  447. 

  448.     ret= fold(v + state->bias, bits);

  449. 

  450.     update_vlc_state(state, v);

  451. //printf("final: %d\n", ret);

  452.     return ret;

  453. }

  454. 

  455. #if CONFIG_FFV1_ENCODER

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

  457.                                         int16_t *sample[3],

  458.                                         int plane_index, int bits)

  459. {

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

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

  462.     int x;

  463.     int run_index= s->run_index;

  464.     int run_count=0;

  465.     int run_mode=0;

  466. 

  467.     if(s->ac){

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

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

  470.             return -1;

  471.         }

  472.     }else{

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

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

  475.             return -1;

  476.         }

  477.     }

  478. 

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

  480.         int diff, context;

  481. 

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

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

  484. 

  485.         if(context < 0){

  486.             context = -context;

  487.             diff= -diff;

  488.         }

  489. 

  490.         diff= fold(diff, bits);

  491. 

  492.         if(s->ac){

  493.             if(s->flags & CODEC_FLAG_PASS1){

  494.                 put_symbol_inline(c, p->state[context], diff, 1, s->rc_stat, s->rc_stat2[p->quant_table_index][context]);

  495.             }else{

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

  497.             }

  498.         }else{

  499.             if(context == 0) run_mode=1;

  500. 

  501.             if(run_mode){

  502. 

  503.                 if(diff){

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

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

  506.                         run_index++;

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

  508.                     }

  509. 

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

  511.                     if(run_index) run_index--;

  512.                     run_count=0;

  513.                     run_mode=0;

  514.                     if(diff>0) diff--;

  515.                 }else{

  516.                     run_count++;

  517.                 }

  518.             }

  519. 

  520. //            printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)put_bits_count(&s->pb));

  521. 

  522.             if(run_mode == 0)

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

  524.         }

  525.     }

  526.     if(run_mode){

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

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

  529.             run_index++;

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

  531.         }

  532. 

  533.         if(run_count)

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

  535.     }

  536.     s->run_index= run_index;

  537. 

  538.     return 0;

  539. }

  540. 

  541. static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){

  542.     int x,y,i;

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

  544.     int16_t *sample[3];

  545.     s->run_index=0;

  546. 

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

  548. 

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

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

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

  552. 

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

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

  555. //{START_TIMER

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

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

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

  559.             }

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

  561.         }else{

  562.             if(s->packed_at_lsb){

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

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

  565.                 }

  566.             }else{

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

  568.                     sample[0][x]= ((uint16_t*)(src + stride*y))[x] >> (16 - s->bits_per_raw_sample);

  569.                 }

  570.             }

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

  572.         }

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

  574.     }

  575. }

  576. 

  577. static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){

  578.     int x, y, p, i;

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

  580.     int16_t *sample[4][3];

  581.     s->run_index=0;

  582. 

  583.     memset(s->sample_buffer, 0, ring_size*4*(w+6)*sizeof(*s->sample_buffer));

  584. 

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

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

  587.             for(p=0; p<4; p++)

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

  589. 

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

  591.             unsigned v= src[x + stride*y];

  592.             int b= v&0xFF;

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

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

  595.             int a=  v>>24;

  596. 

  597.             b -= g;

  598.             r -= g;

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

  600.             b += 0x100;

  601.             r += 0x100;

  602. 

  603. //            assert(g>=0 && b>=0 && r>=0);

  604. //            assert(g<256 && b<512 && r<512);

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

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

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

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

  609.         }

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

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

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

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

  614.         }

  615.     }

  616. }

  617. 

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

  619.     int last=0;

  620.     int i;

  621.     uint8_t state[CONTEXT_SIZE];

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

  623. 

  624.     for(i=1; i<128 ; i++){

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

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

  627.             last= i;

  628.         }

  629.     }

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

  631. }

  632. 

  633. static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){

  634.     int i;

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

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

  637. }

  638. 

  639. static void write_header(FFV1Context *f){

  640.     uint8_t state[CONTEXT_SIZE];

  641.     int i, j;

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

  643. 

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

  645. 

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

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

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

  649.         if(f->ac>1){

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

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

  652.             }

  653.         }

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

  655.         if(f->version>0)

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

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

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

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

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

  661. 

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

  663.     }else if(f->version < 3){

  664.         put_symbol(c, state, f->slice_count, 0);

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

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

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

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

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

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

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

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

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

  674.             }

  675.         }

  676.     }

  677. }

  678. #endif /* CONFIG_FFV1_ENCODER */

  679. 

  680. static av_cold int common_init(AVCodecContext *avctx){

  681.     FFV1Context *s = avctx->priv_data;

  682. 

  683.     s->avctx= avctx;

  684.     s->flags= avctx->flags;

  685. 

  686.     avcodec_get_frame_defaults(&s->picture);

  687. 

  688.     ff_dsputil_init(&s->dsp, avctx);

  689. 

  690.     s->width = avctx->width;

  691.     s->height= avctx->height;

  692. 

  693.     assert(s->width && s->height);

  694.     //defaults

  695.     s->num_h_slices=1;

  696.     s->num_v_slices=1;

  697. 

  698. 

  699.     return 0;

  700. }

  701. 

  702. static int init_slice_state(FFV1Context *f, FFV1Context *fs){

  703.     int j;

  704. 

  705.         fs->plane_count= f->plane_count;

  706.         fs->transparency= f->transparency;

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

  708.             PlaneContext * const p= &fs->plane[j];

  709. 

  710.             if(fs->ac){

  711.                 if(!p->    state) p->    state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));

  712.                 if(!p->    state)

  713.                     return AVERROR(ENOMEM);

  714.             }else{

  715.                 if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));

  716.                 if(!p->vlc_state)

  717.                     return AVERROR(ENOMEM);

  718.             }

  719.         }

  720. 

  721.         if (fs->ac>1){

  722.             //FIXME only redo if state_transition changed

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

  724.                 fs->c.one_state [    j]= fs->state_transition[j];

  725.                 fs->c.zero_state[256-j]= 256-fs->c.one_state [j];

  726.             }

  727.         }

  728. 

  729.     return 0;

  730. }

  731. 

  732. static int init_slices_state(FFV1Context *f){

  733.     int i;

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

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

  736.         if(init_slice_state(f, fs) < 0)

  737.             return -1;

  738.     }

  739.     return 0;

  740. }

  741. 

  742. static av_cold int init_slice_contexts(FFV1Context *f){

  743.     int i;

  744. 

  745.     f->slice_count= f->num_h_slices * f->num_v_slices;

  746. 

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

  748.         FFV1Context *fs= av_mallocz(sizeof(*fs));

  749.         int sx= i % f->num_h_slices;

  750.         int sy= i / f->num_h_slices;

  751.         int sxs= f->avctx->width * sx    / f->num_h_slices;

  752.         int sxe= f->avctx->width *(sx+1) / f->num_h_slices;

  753.         int sys= f->avctx->height* sy    / f->num_v_slices;

  754.         int sye= f->avctx->height*(sy+1) / f->num_v_slices;

  755.         f->slice_context[i]= fs;

  756.         memcpy(fs, f, sizeof(*fs));

  757.         memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));

  758. 

  759.         fs->slice_width = sxe - sxs;

  760.         fs->slice_height= sye - sys;

  761.         fs->slice_x     = sxs;

  762.         fs->slice_y     = sys;

  763. 

  764.         fs->sample_buffer = av_malloc(3*4 * (fs->width+6) * sizeof(*fs->sample_buffer));

  765.         if (!fs->sample_buffer)

  766.             return AVERROR(ENOMEM);

  767.     }

  768.     return 0;

  769. }

  770. 

  771. static int allocate_initial_states(FFV1Context *f){

  772.     int i;

  773. 

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

  775.         f->initial_states[i]= av_malloc(f->context_count[i]*sizeof(*f->initial_states[i]));

  776.         if(!f->initial_states[i])

  777.             return AVERROR(ENOMEM);

  778.         memset(f->initial_states[i], 128, f->context_count[i]*sizeof(*f->initial_states[i]));

  779.     }

  780.     return 0;

  781. }

  782. 

  783. #if CONFIG_FFV1_ENCODER

  784. static int write_extra_header(FFV1Context *f){

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

  786.     uint8_t state[CONTEXT_SIZE];

  787.     int i, j, k;

  788.     uint8_t state2[32][CONTEXT_SIZE];

  789.     unsigned v;

  790. 

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

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

  793. 

  794.     f->avctx->extradata= av_malloc(f->avctx->extradata_size= 10000 + (11*11*5*5*5+11*11*11)*32);

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

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

  797. 

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

  799.     if(f->version > 2)

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

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

  802.     if(f->ac>1){

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

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

  805.         }

  806.     }

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

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

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

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

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

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

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

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

  815. 

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

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

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

  819. 

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

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

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

  823.                 break;

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

  825.             put_rac(c, state, 1);

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

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

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

  829.                     put_symbol(c, state2[k], (int8_t)(f->initial_states[i][j][k]-pred), 1);

  830.                 }

  831.             }

  832.         }else{

  833.             put_rac(c, state, 0);

  834.         }

  835.     }

  836. 

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

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

  839.     }

  840. 

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

  842.     v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);

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

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

  845. 

  846.     return 0;

  847. }

  848. 

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

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

  851. 

  852.     do{

  853.         changed=0;

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

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

  856. #define COST(old, new) \

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

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

  859. 

  860. #define COST2(old, new) \

  861.     COST(old, new)\

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

  863. 

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

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

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

  867.                     int j;

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

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

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

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

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

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

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

  875.                     }

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

  877.                         if     (stt[j] == i ) stt[j] = i2;

  878.                         else if(stt[j] == i2) stt[j] = i ;

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

  880.                             if     (stt[256-j] == 256-i ) stt[256-j] = 256-i2;

  881.                             else if(stt[256-j] == 256-i2) stt[256-j] = 256-i ;

  882.                         }

  883.                     }

  884.                     print=changed=1;

  885.                 }

  886.             }

  887.         }

  888.     }while(changed);

  889.     return print;

  890. }

  891. 

  892. static av_cold int encode_init(AVCodecContext *avctx)

  893. {

  894.     FFV1Context *s = avctx->priv_data;

  895.     int i, j, k, m;

  896. 

  897.     common_init(avctx);

  898. 

  899.     s->version=0;

  900. 

  901.     if((avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) || avctx->slices>1)

  902.         s->version = FFMAX(s->version, 2);

  903. 

  904.     if(avctx->level == 3){

  905.         s->version = 3;

  906.         s->ec = 1;

  907.     }

  908. 

  909.     if(s->version >= 2 && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {

  910.         av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");

  911.         return -1;

  912.     }

  913. 

  914.     s->ac= avctx->coder_type ? 2:0;

  915. 

  916.     if(s->ac>1)

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

  918.             s->state_transition[i]=ver2_state[i];

  919. 

  920.     s->plane_count=3;

  921.     switch(avctx->pix_fmt){

  922.     case PIX_FMT_YUV444P9:

  923.     case PIX_FMT_YUV422P9:

  924.     case PIX_FMT_YUV420P9:

  925.         if (!avctx->bits_per_raw_sample)

  926.             s->bits_per_raw_sample = 9;

  927.     case PIX_FMT_YUV444P10:

  928.     case PIX_FMT_YUV420P10:

  929.     case PIX_FMT_YUV422P10:

  930.         s->packed_at_lsb = 1;

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

  932.             s->bits_per_raw_sample = 10;

  933.     case PIX_FMT_GRAY16:

  934.     case PIX_FMT_YUV444P16:

  935.     case PIX_FMT_YUV422P16:

  936.     case PIX_FMT_YUV420P16:

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

  938.             s->bits_per_raw_sample = 16;

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

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

  941.         }

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

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

  944.             return -1;

  945.         }

  946.         if(!s->ac){

  947.             av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");

  948.             return -1;

  949.         }

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

  951.     case PIX_FMT_GRAY8:

  952.     case PIX_FMT_YUV444P:

  953.     case PIX_FMT_YUV440P:

  954.     case PIX_FMT_YUV422P:

  955.     case PIX_FMT_YUV420P:

  956.     case PIX_FMT_YUV411P:

  957.     case PIX_FMT_YUV410P:

  958.         s->chroma_planes= av_pix_fmt_descriptors[avctx->pix_fmt].nb_components < 3 ? 0 : 1;

  959.         s->colorspace= 0;

  960.         break;

  961.     case PIX_FMT_YUVA444P:

  962.     case PIX_FMT_YUVA420P:

  963.         s->chroma_planes= 1;

  964.         s->colorspace= 0;

  965.         s->transparency= 1;

  966.         break;

  967.     case PIX_FMT_RGB32:

  968.         s->colorspace= 1;

  969.         s->transparency= 1;

  970.         break;

  971.     case PIX_FMT_0RGB32:

  972.         s->colorspace= 1;

  973.         break;

  974.     default:

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

  976.         return -1;

  977.     }

  978.     if (s->transparency) {

  979.         av_log(avctx, AV_LOG_WARNING, "Storing alpha plane, this will require a recent FFV1 decoder to playback!\n");

  980.     }

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

  982.         av_log(avctx, AV_LOG_ERROR, "Invalid context model %d, valid values are 0 and 1\n", avctx->context_model);

  983.         return AVERROR(EINVAL);

  984.     }

  985. 

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

  987.         s->quant_table_count=2;

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

  989.             s->quant_tables[0][0][i]=           quant11[i];

  990.             s->quant_tables[0][1][i]=        11*quant11[i];

  991.             s->quant_tables[0][2][i]=     11*11*quant11[i];

  992.             s->quant_tables[1][0][i]=           quant11[i];

  993.             s->quant_tables[1][1][i]=        11*quant11[i];

  994.             s->quant_tables[1][2][i]=     11*11*quant5 [i];

  995.             s->quant_tables[1][3][i]=   5*11*11*quant5 [i];

  996.             s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];

  997.         }else{

  998.             s->quant_tables[0][0][i]=           quant9_10bit[i];

  999.             s->quant_tables[0][1][i]=        11*quant9_10bit[i];

  1000.             s->quant_tables[0][2][i]=     11*11*quant9_10bit[i];

  1001.             s->quant_tables[1][0][i]=           quant9_10bit[i];

  1002.             s->quant_tables[1][1][i]=        11*quant9_10bit[i];

  1003.             s->quant_tables[1][2][i]=     11*11*quant5_10bit[i];

  1004.             s->quant_tables[1][3][i]=   5*11*11*quant5_10bit[i];

  1005.             s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];

  1006.         }

  1007.     }

  1008.     s->context_count[0]= (11*11*11+1)/2;

  1009.     s->context_count[1]= (11*11*5*5*5+1)/2;

  1010.     memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table));

  1011. 

  1012.     for(i=0; i<s->plane_count; i++){

  1013.         PlaneContext * const p= &s->plane[i];

  1014. 

  1015.         memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));

  1016.         p->quant_table_index= avctx->context_model;

  1017.         p->context_count= s->context_count[p->quant_table_index];

  1018.     }

  1019. 

  1020.     if(allocate_initial_states(s) < 0)

  1021.         return AVERROR(ENOMEM);

  1022. 

  1023.     avctx->coded_frame= &s->picture;

  1024.     if(!s->transparency)

  1025.         s->plane_count= 2;

  1026.     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);

  1027. 

  1028.     s->picture_number=0;

  1029. 

  1030.     if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){

  1031.         for(i=0; i<s->quant_table_count; i++){

  1032.             s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i]));

  1033.             if(!s->rc_stat2[i])

  1034.                 return AVERROR(ENOMEM);

  1035.         }

  1036.     }

  1037.     if(avctx->stats_in){

  1038.         char *p= avctx->stats_in;

  1039.         uint8_t best_state[256][256];

  1040.         int gob_count=0;

  1041.         char *next;

  1042. 

  1043.         av_assert0(s->version>=2);

  1044. 

  1045.         for(;;){

  1046.             for(j=0; j<256; j++){

  1047.                 for(i=0; i<2; i++){

  1048.                     s->rc_stat[j][i]= strtol(p, &next, 0);

  1049.                     if(next==p){

  1050.                         av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d [%s]\n", j,i,p);

  1051.                         return -1;

  1052.                     }

  1053.                     p=next;

  1054.                 }

  1055.             }

  1056.             for(i=0; i<s->quant_table_count; i++){

  1057.                 for(j=0; j<s->context_count[i]; j++){

  1058.                     for(k=0; k<32; k++){

  1059.                         for(m=0; m<2; m++){

  1060.                             s->rc_stat2[i][j][k][m]= strtol(p, &next, 0);

  1061.                             if(next==p){

  1062.                                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p);

  1063.                                 return -1;

  1064.                             }

  1065.                             p=next;

  1066.                         }

  1067.                     }

  1068.                 }

  1069.             }

  1070.             gob_count= strtol(p, &next, 0);

  1071.             if(next==p || gob_count <0){

  1072.                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");

  1073.                 return -1;

  1074.             }

  1075.             p=next;

  1076.             while(*p=='\n' || *p==' ') p++;

  1077.             if(p[0]==0) break;

  1078.         }

  1079.         sort_stt(s, s->state_transition);

  1080. 

  1081.         find_best_state(best_state, s->state_transition);

  1082. 

  1083.         for(i=0; i<s->quant_table_count; i++){

  1084.             for(j=0; j<s->context_count[i]; j++){

  1085.                 for(k=0; k<32; k++){

  1086.                     double p= 128;

  1087.                     if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){

  1088.                         p=256.0*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]);

  1089.                     }

  1090.                     s->initial_states[i][j][k]= best_state[av_clip(round(p), 1, 255)][av_clip((s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1])/gob_count, 0, 255)];

  1091.                 }

  1092.             }

  1093.         }

  1094.     }

  1095. 

  1096.     if(s->version>1){

  1097.         for(s->num_v_slices=2; s->num_v_slices<9; s->num_v_slices++){

  1098.             for(s->num_h_slices=s->num_v_slices; s->num_h_slices<2*s->num_v_slices; s->num_h_slices++){

  1099.                 if(avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64)

  1100.                     goto slices_ok;

  1101.             }

  1102.         }

  1103.         av_log(avctx, AV_LOG_ERROR, "Unsupported number %d of slices requested, please specify a supported number with -slices\n", avctx->slices);

  1104.         return -1;

  1105.         slices_ok:

  1106.         write_extra_header(s);

  1107.     }

  1108. 

  1109.     if(init_slice_contexts(s) < 0)

  1110.         return -1;

  1111.     if(init_slices_state(s) < 0)

  1112.         return -1;

  1113. 

  1114. #define STATS_OUT_SIZE 1024*1024*6

  1115.     if(avctx->flags & CODEC_FLAG_PASS1){

  1116.         avctx->stats_out= av_mallocz(STATS_OUT_SIZE);

  1117.         for(i=0; i<s->quant_table_count; i++){

  1118.             for(j=0; j<s->slice_count; j++){

  1119.                 FFV1Context *sf= s->slice_context[j];

  1120.                 av_assert0(!sf->rc_stat2[i]);

  1121.                 sf->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*sf->rc_stat2[i]));

  1122.                 if(!sf->rc_stat2[i])

  1123.                     return AVERROR(ENOMEM);

  1124.             }

  1125.         }

  1126.     }

  1127. 

  1128.     return 0;

  1129. }

  1130. #endif /* CONFIG_FFV1_ENCODER */

  1131. 

  1132. 

  1133. static void clear_slice_state(FFV1Context *f, FFV1Context *fs){

  1134.     int i, j;

  1135. 

  1136.         for(i=0; i<f->plane_count; i++){

  1137.             PlaneContext *p= &fs->plane[i];

  1138. 

  1139.             p->interlace_bit_state[0]= 128;

  1140.             p->interlace_bit_state[1]= 128;

  1141. 

  1142.             if(fs->ac){

  1143.                 if(f->initial_states[p->quant_table_index]){

  1144.                     memcpy(p->state, f->initial_states[p->quant_table_index], CONTEXT_SIZE*p->context_count);

  1145.                 }else

  1146.                 memset(p->state, 128, CONTEXT_SIZE*p->context_count);

  1147.             }else{

  1148.                 for(j=0; j<p->context_count; j++){

  1149.                     p->vlc_state[j].drift= 0;

  1150.                     p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2);

  1151.                     p->vlc_state[j].bias= 0;

  1152.                     p->vlc_state[j].count= 1;

  1153.                 }

  1154.             }

  1155.         }

  1156. }

  1157. 

  1158. static void clear_state(FFV1Context *f){

  1159.     int si;

  1160. 

  1161.     for(si=0; si<f->slice_count; si++){

  1162.         FFV1Context *fs= f->slice_context[si];

  1163.         clear_slice_state(f, fs);

  1164.     }

  1165. }

  1166. 

  1167. #if CONFIG_FFV1_ENCODER

  1168. 

  1169. static void encode_slice_header(FFV1Context *f, FFV1Context *fs){

  1170.     RangeCoder *c = &fs->c;

  1171.     uint8_t state[CONTEXT_SIZE];

  1172.     int j;

  1173.     memset(state, 128, sizeof(state));

  1174. 

  1175.     put_symbol(c, state, (fs->slice_x     +1)*f->num_h_slices / f->width   , 0);

  1176.     put_symbol(c, state, (fs->slice_y     +1)*f->num_v_slices / f->height  , 0);

  1177.     put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);

  1178.     put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);

  1179.     for(j=0; j<f->plane_count; j++){

  1180.         put_symbol(c, state, f->plane[j].quant_table_index, 0);

  1181.         av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);

  1182.     }

  1183.     if(!f->picture.interlaced_frame) put_symbol(c, state, 3, 0);

  1184.     else                             put_symbol(c, state, 1 + !f->picture.top_field_first, 0);

  1185.     put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);

  1186.     put_symbol(c, state, f->picture.sample_aspect_ratio.den, 0);

  1187. }

  1188. 

  1189. static int encode_slice(AVCodecContext *c, void *arg){

  1190.     FFV1Context *fs= *(void**)arg;

  1191.     FFV1Context *f= fs->avctx->priv_data;

  1192.     int width = fs->slice_width;

  1193.     int height= fs->slice_height;

  1194.     int x= fs->slice_x;

  1195.     int y= fs->slice_y;

  1196.     AVFrame * const p= &f->picture;

  1197.     const int ps= (f->bits_per_raw_sample>8)+1;

  1198. 

  1199.     if(p->key_frame)

  1200.         clear_slice_state(f, fs);

  1201.     if(f->version > 2){

  1202.         encode_slice_header(f, fs);

  1203.     }

  1204.     if(!fs->ac){

  1205.         fs->ac_byte_count = f->version > 2 || (!x&&!y) ? ff_rac_terminate(&fs->c) : 0;

  1206.         init_put_bits(&fs->pb, fs->c.bytestream_start + fs->ac_byte_count, fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count);

  1207.     }

  1208. 

  1209.     if(f->colorspace==0){

  1210.         const int chroma_width = -((-width )>>f->chroma_h_shift);

  1211.         const int chroma_height= -((-height)>>f->chroma_v_shift);

  1212.         const int cx= x>>f->chroma_h_shift;

  1213.         const int cy= y>>f->chroma_v_shift;

  1214. 

  1215.         encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);

  1216. 

  1217.         if (f->chroma_planes){

  1218.             encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);

  1219.             encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);

  1220.         }

  1221.         if (fs->transparency)

  1222.             encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);

  1223.     }else{

  1224.         encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);

  1225.     }

  1226.     emms_c();

  1227. 

  1228.     return 0;

  1229. }

  1230. 

  1231. static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,

  1232.                         const AVFrame *pict, int *got_packet)

  1233. {

  1234.     FFV1Context *f = avctx->priv_data;

  1235.     RangeCoder * const c= &f->slice_context[0]->c;

  1236.     AVFrame * const p= &f->picture;

  1237.     int used_count= 0;

  1238.     uint8_t keystate=128;

  1239.     uint8_t *buf_p;

  1240.     int i, ret;

  1241. 

  1242.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8

  1243.                                   + FF_MIN_BUFFER_SIZE)) < 0)

  1244.         return ret;

  1245. 

  1246.     ff_init_range_encoder(c, pkt->data, pkt->size);

  1247.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1248. 

  1249.     *p = *pict;

  1250.     p->pict_type= AV_PICTURE_TYPE_I;

  1251. 

  1252.     if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){

  1253.         put_rac(c, &keystate, 1);

  1254.         p->key_frame= 1;

  1255.         f->gob_count++;

  1256.         write_header(f);

  1257.     }else{

  1258.         put_rac(c, &keystate, 0);

  1259.         p->key_frame= 0;

  1260.     }

  1261. 

  1262.     if (f->ac>1){

  1263.         int i;

  1264.         for(i=1; i<256; i++){

  1265.             c->one_state[i]= f->state_transition[i];

  1266.             c->zero_state[256-i]= 256-c->one_state[i];

  1267.         }

  1268.     }

  1269. 

  1270.     for(i=1; i<f->slice_count; i++){

  1271.         FFV1Context *fs= f->slice_context[i];

  1272.         uint8_t *start = pkt->data + (pkt->size-used_count)*i/f->slice_count;

  1273.         int len = pkt->size/f->slice_count;

  1274. 

  1275.         ff_init_range_encoder(&fs->c, start, len);

  1276.     }

  1277.     avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));

  1278. 

  1279.     buf_p = pkt->data;

  1280.     for(i=0; i<f->slice_count; i++){

  1281.         FFV1Context *fs= f->slice_context[i];

  1282.         int bytes;

  1283. 

  1284.         if(fs->ac){

  1285.             uint8_t state=128;

  1286.             put_rac(&fs->c, &state, 0);

  1287.             bytes= ff_rac_terminate(&fs->c);

  1288.         }else{

  1289.             flush_put_bits(&fs->pb); //nicer padding FIXME

  1290.             bytes= fs->ac_byte_count + (put_bits_count(&fs->pb)+7)/8;

  1291.         }

  1292.         if(i>0 || f->version>2){

  1293.             av_assert0(bytes < pkt->size/f->slice_count);

  1294.             memmove(buf_p, fs->c.bytestream_start, bytes);

  1295.             av_assert0(bytes < (1<<24));

  1296.             AV_WB24(buf_p+bytes, bytes);

  1297.             bytes+=3;

  1298.         }

  1299.         if(f->ec){

  1300.             unsigned v;

  1301.             buf_p[bytes++] = 0;

  1302.             v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);

  1303.             AV_WL32(buf_p + bytes, v); bytes += 4;

  1304.         }

  1305.         buf_p += bytes;

  1306.     }

  1307. 

  1308.     if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){

  1309.         int j, k, m;

  1310.         char *p= avctx->stats_out;

  1311.         char *end= p + STATS_OUT_SIZE;

  1312. 

  1313.         memset(f->rc_stat, 0, sizeof(f->rc_stat));

  1314.         for(i=0; i<f->quant_table_count; i++)

  1315.             memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i]));

  1316. 

  1317.         for(j=0; j<f->slice_count; j++){

  1318.             FFV1Context *fs= f->slice_context[j];

  1319.             for(i=0; i<256; i++){

  1320.                 f->rc_stat[i][0] += fs->rc_stat[i][0];

  1321.                 f->rc_stat[i][1] += fs->rc_stat[i][1];

  1322.             }

  1323.             for(i=0; i<f->quant_table_count; i++){

  1324.                 for(k=0; k<f->context_count[i]; k++){

  1325.                     for(m=0; m<32; m++){

  1326.                         f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];

  1327.                         f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];

  1328.                     }

  1329.                 }

  1330.             }

  1331.         }

  1332. 

  1333.         for(j=0; j<256; j++){

  1334.             snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat[j][0], f->rc_stat[j][1]);

  1335.             p+= strlen(p);

  1336.         }

  1337.         snprintf(p, end-p, "\n");

  1338. 

  1339.         for(i=0; i<f->quant_table_count; i++){

  1340.             for(j=0; j<f->context_count[i]; j++){

  1341.                 for(m=0; m<32; m++){

  1342.                     snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);

  1343.                     p+= strlen(p);

  1344.                 }

  1345.             }

  1346.         }

  1347.         snprintf(p, end-p, "%d\n", f->gob_count);

  1348.     } else if(avctx->flags&CODEC_FLAG_PASS1)

  1349.         avctx->stats_out[0] = '\0';

  1350. 

  1351.     f->picture_number++;

  1352.     pkt->size   = buf_p - pkt->data;

  1353.     pkt->flags |= AV_PKT_FLAG_KEY*p->key_frame;

  1354.     *got_packet = 1;

  1355. 

  1356.     return 0;

  1357. }

  1358. #endif /* CONFIG_FFV1_ENCODER */

  1359. 

  1360. static av_cold int common_end(AVCodecContext *avctx){

  1361.     FFV1Context *s = avctx->priv_data;

  1362.     int i, j;

  1363. 

  1364.     if (avctx->codec->decode && s->picture.data[0])

  1365.         avctx->release_buffer(avctx, &s->picture);

  1366. 

  1367.     for(j=0; j<s->slice_count; j++){

  1368.         FFV1Context *fs= s->slice_context[j];

  1369.         for(i=0; i<s->plane_count; i++){

  1370.             PlaneContext *p= &fs->plane[i];

  1371. 

  1372.             av_freep(&p->state);

  1373.             av_freep(&p->vlc_state);

  1374.         }

  1375.         av_freep(&fs->sample_buffer);

  1376.     }

  1377. 

  1378.     av_freep(&avctx->stats_out);

  1379.     for(j=0; j<s->quant_table_count; j++){

  1380.         av_freep(&s->initial_states[j]);

  1381.         for(i=0; i<s->slice_count; i++){

  1382.             FFV1Context *sf= s->slice_context[i];

  1383.             av_freep(&sf->rc_stat2[j]);

  1384.         }

  1385.         av_freep(&s->rc_stat2[j]);

  1386.     }

  1387. 

  1388.     for(i=0; i<s->slice_count; i++){

  1389.         av_freep(&s->slice_context[i]);

  1390.     }

  1391. 

  1392.     return 0;

  1393. }

  1394. 

  1395. static av_always_inline void decode_line(FFV1Context *s, int w,

  1396.                                          int16_t *sample[2],

  1397.                                          int plane_index, int bits)

  1398. {

  1399.     PlaneContext * const p= &s->plane[plane_index];

  1400.     RangeCoder * const c= &s->c;

  1401.     int x;

  1402.     int run_count=0;

  1403.     int run_mode=0;

  1404.     int run_index= s->run_index;

  1405. 

  1406.     for(x=0; x<w; x++){

  1407.         int diff, context, sign;

  1408. 

  1409.         context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);

  1410.         if(context < 0){

  1411.             context= -context;

  1412.             sign=1;

  1413.         }else

  1414.             sign=0;

  1415. 

  1416.         av_assert2(context < p->context_count);

  1417. 

  1418.         if(s->ac){

  1419.             diff= get_symbol_inline(c, p->state[context], 1);

  1420.         }else{

  1421.             if(context == 0 && run_mode==0) run_mode=1;

  1422. 

  1423.             if(run_mode){

  1424.                 if(run_count==0 && run_mode==1){

  1425.                     if(get_bits1(&s->gb)){

  1426.                         run_count = 1<<ff_log2_run[run_index];

  1427.                         if(x + run_count <= w) run_index++;

  1428.                     }else{

  1429.                         if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);

  1430.                         else run_count=0;

  1431.                         if(run_index) run_index--;

  1432.                         run_mode=2;

  1433.                     }

  1434.                 }

  1435.                 run_count--;

  1436.                 if(run_count < 0){

  1437.                     run_mode=0;

  1438.                     run_count=0;

  1439.                     diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);

  1440.                     if(diff>=0) diff++;

  1441.                 }else

  1442.                     diff=0;

  1443.             }else

  1444.                 diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);

  1445. 

  1446. //            printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));

  1447.         }

  1448. 

  1449.         if(sign) diff= -diff;

  1450. 

  1451.         sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);

  1452.     }

  1453.     s->run_index= run_index;

  1454. }

  1455. 

  1456. static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){

  1457.     int x, y;

  1458.     int16_t *sample[2];

  1459.     sample[0]=s->sample_buffer    +3;

  1460.     sample[1]=s->sample_buffer+w+6+3;

  1461. 

  1462.     s->run_index=0;

  1463. 

  1464.     memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer));

  1465. 

  1466.     for(y=0; y<h; y++){

  1467.         int16_t *temp = sample[0]; //FIXME try a normal buffer

  1468. 

  1469.         sample[0]= sample[1];

  1470.         sample[1]= temp;

  1471. 

  1472.         sample[1][-1]= sample[0][0  ];

  1473.         sample[0][ w]= sample[0][w-1];

  1474. 

  1475. //{START_TIMER

  1476.         if(s->avctx->bits_per_raw_sample <= 8){

  1477.             decode_line(s, w, sample, plane_index, 8);

  1478.             for(x=0; x<w; x++){

  1479.                 src[x + stride*y]= sample[1][x];

  1480.             }

  1481.         }else{

  1482.             decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);

  1483.             if(s->packed_at_lsb){

  1484.                 for(x=0; x<w; x++){

  1485.                     ((uint16_t*)(src + stride*y))[x]= sample[1][x];

  1486.                 }

  1487.             }else{

  1488.                 for(x=0; x<w; x++){

  1489.                     ((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample);

  1490.                 }

  1491.             }

  1492.         }

  1493. //STOP_TIMER("decode-line")}

  1494.     }

  1495. }

  1496. 

  1497. static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){

  1498.     int x, y, p;

  1499.     int16_t *sample[4][2];

  1500.     for(x=0; x<4; x++){

  1501.         sample[x][0] = s->sample_buffer +  x*2   *(w+6) + 3;

  1502.         sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3;

  1503.     }

  1504. 

  1505.     s->run_index=0;

  1506. 

  1507.     memset(s->sample_buffer, 0, 8*(w+6)*sizeof(*s->sample_buffer));

  1508. 

  1509.     for(y=0; y<h; y++){

  1510.         for(p=0; p<3 + s->transparency; p++){

  1511.             int16_t *temp = sample[p][0]; //FIXME try a normal buffer

  1512. 

  1513.             sample[p][0]= sample[p][1];

  1514.             sample[p][1]= temp;

  1515. 

  1516.             sample[p][1][-1]= sample[p][0][0  ];

  1517.             sample[p][0][ w]= sample[p][0][w-1];

  1518.             decode_line(s, w, sample[p], (p+1)/2, 9);

  1519.         }

  1520.         for(x=0; x<w; x++){

  1521.             int g= sample[0][1][x];

  1522.             int b= sample[1][1][x];

  1523.             int r= sample[2][1][x];

  1524.             int a= sample[3][1][x];

  1525. 

  1526. //            assert(g>=0 && b>=0 && r>=0);

  1527. //            assert(g<256 && b<512 && r<512);

  1528. 

  1529.             b -= 0x100;

  1530.             r -= 0x100;

  1531.             g -= (b + r)>>2;

  1532.             b += g;

  1533.             r += g;

  1534. 

  1535.             src[x + stride*y]= b + (g<<8) + (r<<16) + (a<<24);

  1536.         }

  1537.     }

  1538. }

  1539. 

  1540. static int decode_slice_header(FFV1Context *f, FFV1Context *fs){

  1541.     RangeCoder *c = &fs->c;

  1542.     uint8_t state[CONTEXT_SIZE];

  1543.     unsigned ps, i, context_count;

  1544.     memset(state, 128, sizeof(state));

  1545. 

  1546.     av_assert0(f->version > 2);

  1547. 

  1548.     fs->slice_x     = get_symbol(c, state, 0)   *f->width ;

  1549.     fs->slice_y     = get_symbol(c, state, 0)   *f->height;

  1550.     fs->slice_width =(get_symbol(c, state, 0)+1)*f->width  + fs->slice_x;

  1551.     fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;

  1552. 

  1553.     fs->slice_x /= f->num_h_slices;

  1554.     fs->slice_y /= f->num_v_slices;

  1555.     fs->slice_width  = fs->slice_width /f->num_h_slices - fs->slice_x;

  1556.     fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;

  1557.     if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)

  1558.         return -1;

  1559.     if(    (unsigned)fs->slice_x + (uint64_t)fs->slice_width  > f->width

  1560.         || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)

  1561.         return -1;

  1562. 

  1563.     for(i=0; i<f->plane_count; i++){

  1564.         PlaneContext * const p= &fs->plane[i];

  1565.         int idx=get_symbol(c, state, 0);

  1566.         if(idx > (unsigned)f->quant_table_count){

  1567.             av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");

  1568.             return -1;

  1569.         }

  1570.         p->quant_table_index= idx;

  1571.         memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));

  1572.         context_count= f->context_count[idx];

  1573. 

  1574.         if(p->context_count < context_count){

  1575.             av_freep(&p->state);

  1576.             av_freep(&p->vlc_state);

  1577.         }

  1578.         p->context_count= context_count;

  1579.     }

  1580. 

  1581.     ps = get_symbol(c, state, 0);

  1582.     if(ps==1){

  1583.         f->picture.interlaced_frame = 1;

  1584.         f->picture.top_field_first  = 1;

  1585.     } else if(ps==2){

  1586.         f->picture.interlaced_frame = 1;

  1587.         f->picture.top_field_first  = 0;

  1588.     } else if(ps==3){

  1589.         f->picture.interlaced_frame = 0;

  1590.     }

  1591.     f->picture.sample_aspect_ratio.num = get_symbol(c, state, 0);

  1592.     f->picture.sample_aspect_ratio.den = get_symbol(c, state, 0);

  1593. 

  1594.     return 0;

  1595. }

  1596. 

  1597. static int decode_slice(AVCodecContext *c, void *arg){

  1598.     FFV1Context *fs= *(void**)arg;

  1599.     FFV1Context *f= fs->avctx->priv_data;

  1600.     int width, height, x, y;

  1601.     const int ps= (c->bits_per_raw_sample>8)+1;

  1602.     AVFrame * const p= &f->picture;

  1603. 

  1604.     if(f->version > 2){

  1605.         if(init_slice_state(f, fs) < 0)

  1606.             return AVERROR(ENOMEM);

  1607.         if(decode_slice_header(f, fs) < 0)

  1608.             return AVERROR_INVALIDDATA;

  1609.     }

  1610.     if(init_slice_state(f, fs) < 0)

  1611.         return AVERROR(ENOMEM);

  1612.     if(f->picture.key_frame)

  1613.         clear_slice_state(f, fs);

  1614.     width = fs->slice_width;

  1615.     height= fs->slice_height;

  1616.     x= fs->slice_x;

  1617.     y= fs->slice_y;

  1618. 

  1619.     if(!fs->ac){

  1620.         fs->ac_byte_count = f->version > 2 || (!x&&!y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;

  1621.         init_get_bits(&fs->gb,

  1622.                       fs->c.bytestream_start + fs->ac_byte_count,

  1623.                       (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);

  1624.     }

  1625. 

  1626.     av_assert1(width && height);

  1627.     if(f->colorspace==0){

  1628.         const int chroma_width = -((-width )>>f->chroma_h_shift);

  1629.         const int chroma_height= -((-height)>>f->chroma_v_shift);

  1630.         const int cx= x>>f->chroma_h_shift;

  1631.         const int cy= y>>f->chroma_v_shift;

  1632.         decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);

  1633. 

  1634.         if (f->chroma_planes){

  1635.             decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);

  1636.             decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);

  1637.         }

  1638.         if (fs->transparency)

  1639.             decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);

  1640.     }else{

  1641.         decode_rgb_frame(fs, (uint32_t*)p->data[0] + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);

  1642.     }

  1643. 

  1644.     emms_c();

  1645. 

  1646.     return 0;

  1647. }

  1648. 

  1649. static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){

  1650.     int v;

  1651.     int i=0;

  1652.     uint8_t state[CONTEXT_SIZE];

  1653. 

  1654.     memset(state, 128, sizeof(state));

  1655. 

  1656.     for(v=0; i<128 ; v++){

  1657.         int len= get_symbol(c, state, 0) + 1;

  1658. 

  1659.         if(len + i > 128) return -1;

  1660. 

  1661.         while(len--){

  1662.             quant_table[i] = scale*v;

  1663.             i++;

  1664. //printf("%2d ",v);

  1665. //if(i%16==0) printf("\n");

  1666.         }

  1667.     }

  1668. 

  1669.     for(i=1; i<128; i++){

  1670.         quant_table[256-i]= -quant_table[i];

  1671.     }

  1672.     quant_table[128]= -quant_table[127];

  1673. 

  1674.     return 2*v - 1;

  1675. }

  1676. 

  1677. static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){

  1678.     int i;

  1679.     int context_count=1;

  1680. 

  1681.     for(i=0; i<5; i++){

  1682.         context_count*= read_quant_table(c, quant_table[i], context_count);

  1683.         if(context_count > 32768U){

  1684.             return -1;

  1685.         }

  1686.     }

  1687.     return (context_count+1)/2;

  1688. }

  1689. 

  1690. static int read_extra_header(FFV1Context *f){

  1691.     RangeCoder * const c= &f->c;

  1692.     uint8_t state[CONTEXT_SIZE];

  1693.     int i, j, k;

  1694.     uint8_t state2[32][CONTEXT_SIZE];

  1695. 

  1696.     memset(state2, 128, sizeof(state2));

  1697.     memset(state, 128, sizeof(state));

  1698. 

  1699.     ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);

  1700.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1701. 

  1702.     f->version= get_symbol(c, state, 0);

  1703.     if(f->version > 2)

  1704.         f->minor_version= get_symbol(c, state, 0);

  1705.     f->ac= f->avctx->coder_type= get_symbol(c, state, 0);

  1706.     if(f->ac>1){

  1707.         for(i=1; i<256; i++){

  1708.             f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];

  1709.         }

  1710.     }

  1711.     f->colorspace= get_symbol(c, state, 0); //YUV cs type

  1712.     f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);

  1713.     f->chroma_planes= get_rac(c, state);

  1714.     f->chroma_h_shift= get_symbol(c, state, 0);

  1715.     f->chroma_v_shift= get_symbol(c, state, 0);

  1716.     f->transparency= get_rac(c, state);

  1717.     f->plane_count= 2 + f->transparency;

  1718.     f->num_h_slices= 1 + get_symbol(c, state, 0);

  1719.     f->num_v_slices= 1 + get_symbol(c, state, 0);

  1720.     if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){

  1721.         av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");

  1722.         return -1;

  1723.     }

  1724. 

  1725.     f->quant_table_count= get_symbol(c, state, 0);

  1726.     if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES)

  1727.         return -1;

  1728.     for(i=0; i<f->quant_table_count; i++){

  1729.         if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){

  1730.             av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");

  1731.             return -1;

  1732.         }

  1733.     }

  1734. 

  1735.     if(allocate_initial_states(f) < 0)

  1736.         return AVERROR(ENOMEM);

  1737. 

  1738.     for(i=0; i<f->quant_table_count; i++){

  1739.         if(get_rac(c, state)){

  1740.             for(j=0; j<f->context_count[i]; j++){

  1741.                 for(k=0; k<CONTEXT_SIZE; k++){

  1742.                     int pred= j ? f->initial_states[i][j-1][k] : 128;

  1743.                     f->initial_states[i][j][k]= (pred+get_symbol(c, state2[k], 1))&0xFF;

  1744.                 }

  1745.             }

  1746.         }

  1747.     }

  1748. 

  1749.     if(f->version > 2){

  1750.         f->ec = get_symbol(c, state, 0);

  1751.     }

  1752. 

  1753.     if(f->version > 2){

  1754.         unsigned v;

  1755.         v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);

  1756.         if(v){

  1757.             av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);

  1758.             return AVERROR_INVALIDDATA;

  1759.         }

  1760.     }

  1761. 

  1762.     return 0;

  1763. }

  1764. 

  1765. static int read_header(FFV1Context *f){

  1766.     uint8_t state[CONTEXT_SIZE];

  1767.     int i, j, context_count;

  1768.     RangeCoder * const c= &f->slice_context[0]->c;

  1769. 

  1770.     memset(state, 128, sizeof(state));

  1771. 

  1772.     if(f->version < 2){

  1773.         f->version= get_symbol(c, state, 0);

  1774.         f->ac= f->avctx->coder_type= get_symbol(c, state, 0);

  1775.         if(f->ac>1){

  1776.             for(i=1; i<256; i++){

  1777.                 f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];

  1778.             }

  1779.         }

  1780.         f->colorspace= get_symbol(c, state, 0); //YUV cs type

  1781.         if(f->version>0)

  1782.             f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);

  1783.         f->chroma_planes= get_rac(c, state);

  1784.         f->chroma_h_shift= get_symbol(c, state, 0);

  1785.         f->chroma_v_shift= get_symbol(c, state, 0);

  1786.         f->transparency= get_rac(c, state);

  1787.         f->plane_count= 2 + f->transparency;

  1788.     }

  1789. 

  1790.     if(f->colorspace==0){

  1791.         if(!f->transparency && !f->chroma_planes){

  1792.             if (f->avctx->bits_per_raw_sample<=8)

  1793.                 f->avctx->pix_fmt= PIX_FMT_GRAY8;

  1794.             else

  1795.                 f->avctx->pix_fmt= PIX_FMT_GRAY16;

  1796.         }else if(f->avctx->bits_per_raw_sample<=8 && !f->transparency){

  1797.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1798.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;

  1799.             case 0x01: f->avctx->pix_fmt= PIX_FMT_YUV440P; break;

  1800.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;

  1801.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;

  1802.             case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;

  1803.             case 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;

  1804.             default:

  1805.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1806.                 return -1;

  1807.             }

  1808.         }else if(f->avctx->bits_per_raw_sample<=8 && f->transparency){

  1809.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1810.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUVA444P; break;

  1811.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUVA420P; break;

  1812.             default:

  1813.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1814.                 return -1;

  1815.             }

  1816.         }else if(f->avctx->bits_per_raw_sample==9) {

  1817.             f->packed_at_lsb=1;

  1818.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1819.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P9; break;

  1820.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P9; break;

  1821.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P9; break;

  1822.             default:

  1823.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1824.                 return -1;

  1825.             }

  1826.         }else if(f->avctx->bits_per_raw_sample==10) {

  1827.             f->packed_at_lsb=1;

  1828.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1829.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P10; break;

  1830.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P10; break;

  1831.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P10; break;

  1832.             default:

  1833.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1834.                 return -1;

  1835.             }

  1836.         }else {

  1837.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1838.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;

  1839.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;

  1840.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break;

  1841.             default:

  1842.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1843.                 return -1;

  1844.             }

  1845.         }

  1846.     }else if(f->colorspace==1){

  1847.         if(f->chroma_h_shift || f->chroma_v_shift){

  1848.             av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");

  1849.             return -1;

  1850.         }

  1851.         if(f->transparency) f->avctx->pix_fmt= PIX_FMT_RGB32;

  1852.         else                f->avctx->pix_fmt= PIX_FMT_0RGB32;

  1853.     }else{

  1854.         av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");

  1855.         return -1;

  1856.     }

  1857. 

  1858. //printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);

  1859.     if(f->version < 2){

  1860.         context_count= read_quant_tables(c, f->quant_table);

  1861.         if(context_count < 0){

  1862.                 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");

  1863.                 return -1;

  1864.         }

  1865.     }else if(f->version < 3){

  1866.         f->slice_count= get_symbol(c, state, 0);

  1867.     }else{

  1868.         const uint8_t *p= c->bytestream_end;

  1869.         for(f->slice_count = 0; f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start; f->slice_count++){

  1870.             int trailer = 3 + 5*!!f->ec;

  1871.             int size = AV_RB24(p-trailer);

  1872.             if(size + trailer > p - c->bytestream_start)

  1873.                 break;

  1874.             p -= size + trailer;

  1875.         }

  1876.     }

  1877.     if(f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0){

  1878.         av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);

  1879.         return -1;

  1880.     }

  1881. 

  1882.     for(j=0; j<f->slice_count; j++){

  1883.         FFV1Context *fs= f->slice_context[j];

  1884.         fs->ac= f->ac;

  1885.         fs->packed_at_lsb= f->packed_at_lsb;

  1886. 

  1887.         if(f->version == 2){

  1888.             fs->slice_x     = get_symbol(c, state, 0)   *f->width ;

  1889.             fs->slice_y     = get_symbol(c, state, 0)   *f->height;

  1890.             fs->slice_width =(get_symbol(c, state, 0)+1)*f->width  + fs->slice_x;

  1891.             fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;

  1892. 

  1893.             fs->slice_x /= f->num_h_slices;

  1894.             fs->slice_y /= f->num_v_slices;

  1895.             fs->slice_width  = fs->slice_width /f->num_h_slices - fs->slice_x;

  1896.             fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;

  1897.             if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)

  1898.                 return -1;

  1899.             if(    (unsigned)fs->slice_x + (uint64_t)fs->slice_width  > f->width

  1900.                 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)

  1901.                 return -1;

  1902.         }

  1903. 

  1904.         for(i=0; i<f->plane_count; i++){

  1905.             PlaneContext * const p= &fs->plane[i];

  1906. 

  1907.             if(f->version == 2){

  1908.                 int idx=get_symbol(c, state, 0);

  1909.                 if(idx > (unsigned)f->quant_table_count){

  1910.                     av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");

  1911.                     return -1;

  1912.                 }

  1913.                 p->quant_table_index= idx;

  1914.                 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));

  1915.                 context_count= f->context_count[idx];

  1916.             }else{

  1917.                 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));

  1918.             }

  1919. 

  1920.             if(f->version <= 2){

  1921.                 if(p->context_count < context_count){

  1922.                     av_freep(&p->state);

  1923.                     av_freep(&p->vlc_state);

  1924.                 }

  1925.                 p->context_count= context_count;

  1926.             }

  1927.         }

  1928.     }

  1929.     return 0;

  1930. }

  1931. 

  1932. static av_cold int decode_init(AVCodecContext *avctx)

  1933. {

  1934.     FFV1Context *f = avctx->priv_data;

  1935. 

  1936.     common_init(avctx);

  1937. 

  1938.     if(avctx->extradata && read_extra_header(f) < 0)

  1939.         return -1;

  1940. 

  1941.     if(init_slice_contexts(f) < 0)

  1942.         return -1;

  1943. 

  1944.     return 0;

  1945. }

  1946. 

  1947. static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){

  1948.     const uint8_t *buf = avpkt->data;

  1949.     int buf_size = avpkt->size;

  1950.     FFV1Context *f = avctx->priv_data;

  1951.     RangeCoder * const c= &f->slice_context[0]->c;

  1952.     AVFrame * const p= &f->picture;

  1953.     int bytes_read, i;

  1954.     uint8_t keystate= 128;

  1955.     const uint8_t *buf_p;

  1956. 

  1957.     AVFrame *picture = data;

  1958. 

  1959.     /* release previously stored data */

  1960.     if (p->data[0])

  1961.         avctx->release_buffer(avctx, p);

  1962. 

  1963.     ff_init_range_decoder(c, buf, buf_size);

  1964.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1965. 

  1966. 

  1967.     p->pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P

  1968.     if(get_rac(c, &keystate)){

  1969.         p->key_frame= 1;

  1970.         f->key_frame_ok = 0;

  1971.         if(read_header(f) < 0)

  1972.             return -1;

  1973.         f->key_frame_ok = 1;

  1974.     }else{

  1975.         if (!f->key_frame_ok) {

  1976.             av_log(avctx, AV_LOG_ERROR, "Cant decode non keyframe without valid keyframe\n");

  1977.             return AVERROR_INVALIDDATA;

  1978.         }

  1979.         p->key_frame= 0;

  1980.     }

  1981. 

  1982.     p->reference= 0;

  1983.     if(avctx->get_buffer(avctx, p) < 0){

  1984.         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  1985.         return -1;

  1986.     }

  1987. 

  1988.     if(avctx->debug&FF_DEBUG_PICT_INFO)

  1989.         av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);

  1990. 

  1991.     buf_p= buf + buf_size;

  1992.     for(i=f->slice_count-1; i>=0; i--){

  1993.         FFV1Context *fs= f->slice_context[i];

  1994.         int trailer = 3 + 5*!!f->ec;

  1995.         int v;

  1996. 

  1997.         if(i || f->version>2) v = AV_RB24(buf_p-trailer)+trailer;

  1998.         else                  v = buf_p - c->bytestream_start;

  1999.         if(buf_p - c->bytestream_start < v){

  2000.             av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");

  2001.             return -1;

  2002.         }

  2003.         buf_p -= v;

  2004. 

  2005.         if(f->ec){

  2006.             unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);

  2007.             if(crc){

  2008.                 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", crc);

  2009.             }

  2010.         }

  2011. 

  2012.         if(i){

  2013.             ff_init_range_decoder(&fs->c, buf_p, v);

  2014.         }

  2015.     }

  2016. 

  2017.     avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));

  2018.     f->picture_number++;

  2019. 

  2020.     *picture= *p;

  2021.     *data_size = sizeof(AVFrame);

  2022. 

  2023.     return buf_size;

  2024. }

  2025. 

  2026. AVCodec ff_ffv1_decoder = {

  2027.     .name           = "ffv1",

  2028.     .type           = AVMEDIA_TYPE_VIDEO,

  2029.     .id             = CODEC_ID_FFV1,

  2030.     .priv_data_size = sizeof(FFV1Context),

  2031.     .init           = decode_init,

  2032.     .close          = common_end,

  2033.     .decode         = decode_frame,

  2034.     .capabilities   = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |

  2035.                       CODEC_CAP_SLICE_THREADS,

  2036.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  2037. };

  2038. 

  2039. #if CONFIG_FFV1_ENCODER

  2040. AVCodec ff_ffv1_encoder = {

  2041.     .name           = "ffv1",

  2042.     .type           = AVMEDIA_TYPE_VIDEO,

  2043.     .id             = CODEC_ID_FFV1,

  2044.     .priv_data_size = sizeof(FFV1Context),

  2045.     .init           = encode_init,

  2046.     .encode2        = encode_frame,

  2047.     .close          = common_end,

  2048.     .capabilities   = CODEC_CAP_SLICE_THREADS,

  2049.     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUVA420P, PIX_FMT_YUV444P, PIX_FMT_YUVA444P, PIX_FMT_YUV440P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_0RGB32, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_YUV444P9, PIX_FMT_YUV422P9, PIX_FMT_YUV420P9, PIX_FMT_YUV420P10, PIX_FMT_YUV422P10, PIX_FMT_YUV444P10, PIX_FMT_GRAY16, PIX_FMT_GRAY8, PIX_FMT_NONE},

  2050.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  2051. };

  2052. #endif