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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.     PlaneContext plane[MAX_PLANES];

  185.     int16_t quant_table[MAX_CONTEXT_INPUTS][256];

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

  187.     int context_count[MAX_QUANT_TABLES];

  188.     uint8_t state_transition[256];

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

  190.     int run_index;

  191.     int colorspace;

  192.     int16_t *sample_buffer;

  193.     int gob_count;

  194.     int packed_at_lsb;

  195.     int ec;

  196.     int key_frame_ok;

  197. 

  198.     int quant_table_count;

  199. 

  200.     DSPContext dsp;

  201. 

  202.     struct FFV1Context *slice_context[MAX_SLICES];

  203.     int slice_count;

  204.     int num_v_slices;

  205.     int num_h_slices;

  206.     int slice_width;

  207.     int slice_height;

  208.     int slice_x;

  209.     int slice_y;

  210.     int bits_per_raw_sample;

  211. }FFV1Context;

  212. 

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

  214.     if(bits==8)

  215.         diff= (int8_t)diff;

  216.     else{

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

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

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

  220.     }

  221. 

  222.     return diff;

  223. }

  224. 

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

  226. {

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

  228.     const int  T= last[ 0];

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

  230. 

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

  232. }

  233. 

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

  235.                               int16_t *last, int16_t *last2)

  236. {

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

  238.     const int  T= last[ 0];

  239.     const int RT= last[ 1];

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

  241. 

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

  243.         const int TT= last2[0];

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

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

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

  247.     }else

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

  249. }

  250. 

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

  252.     int i,j,k,m;

  253.     double l2tab[256];

  254. 

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

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

  257. 

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

  259.         double best_len[256];

  260.         double p= i/256.0;

  261. 

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

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

  264. 

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

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

  267.             double len=0;

  268.             occ[j]=1.0;

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

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

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

  272.                     if(occ[m]){

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

  274.                                       + (1-p)*l2tab[256-m]);

  275.                     }

  276.                 }

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

  278.                     best_len[k]= len;

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

  280.                 }

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

  282.                     if(occ[m]){

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

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

  285.                     }

  286.                 }

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

  288.             }

  289.         }

  290.     }

  291. }

  292. 

  293. 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]){

  294.     int i;

  295. 

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

  297. do{\

  298.     if(rc_stat){\

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

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

  301.     }\

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

  303. }while(0)

  304. 

  305.     if(v){

  306.         const int a= FFABS(v);

  307.         const int e= av_log2(a);

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

  309.         if(e<=9){

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

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

  312.             }

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

  314. 

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

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

  317.             }

  318. 

  319.             if(is_signed)

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

  321.         }else{

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

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

  324.             }

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

  326. 

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

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

  329.             }

  330. 

  331.             if(is_signed)

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

  333.         }

  334.     }else{

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

  336.     }

  337. #undef put_rac

  338. }

  339. 

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

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

  342. }

  343. 

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

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

  346.         return 0;

  347.     else{

  348.         int i, e, a;

  349.         e= 0;

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

  351.             e++;

  352.         }

  353. 

  354.         a= 1;

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

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

  357.         }

  358. 

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

  360.         return (a^e)-e;

  361.     }

  362. }

  363. 

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

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

  366. }

  367. 

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

  369.     int drift= state->drift;

  370.     int count= state->count;

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

  372.     drift += v;

  373. 

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

  375.         count >>= 1;

  376.         drift >>= 1;

  377.         state->error_sum >>= 1;

  378.     }

  379.     count++;

  380. 

  381.     if(drift <= -count){

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

  383. 

  384.         drift += count;

  385.         if(drift <= -count)

  386.             drift= -count + 1;

  387.     }else if(drift > 0){

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

  389. 

  390.         drift -= count;

  391.         if(drift > 0)

  392.             drift= 0;

  393.     }

  394. 

  395.     state->drift= drift;

  396.     state->count= count;

  397. }

  398. 

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

  400.     int i, k, code;

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

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

  403. 

  404.     i= state->count;

  405.     k=0;

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

  407.         k++;

  408.         i += i;

  409.     }

  410. 

  411.     assert(k<=8);

  412. 

  413. #if 0 // JPEG LS

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

  415.     else                                         code= v;

  416. #else

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

  418. #endif

  419. 

  420. //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);

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

  422. 

  423.     update_vlc_state(state, v);

  424. }

  425. 

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

  427.     int k, i, v, ret;

  428. 

  429.     i= state->count;

  430.     k=0;

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

  432.         k++;

  433.         i += i;

  434.     }

  435. 

  436.     assert(k<=8);

  437. 

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

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

  440. 

  441. #if 0 // JPEG LS

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

  443. #else

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

  445. #endif

  446. 

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

  448. 

  449.     update_vlc_state(state, v);

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

  451.     return ret;

  452. }

  453. 

  454. #if CONFIG_FFV1_ENCODER

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

  456.                                         int16_t *sample[3],

  457.                                         int plane_index, int bits)

  458. {

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

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

  461.     int x;

  462.     int run_index= s->run_index;

  463.     int run_count=0;

  464.     int run_mode=0;

  465. 

  466.     if(s->ac){

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

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

  469.             return -1;

  470.         }

  471.     }else{

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

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

  474.             return -1;

  475.         }

  476.     }

  477. 

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

  479.         int diff, context;

  480. 

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

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

  483. 

  484.         if(context < 0){

  485.             context = -context;

  486.             diff= -diff;

  487.         }

  488. 

  489.         diff= fold(diff, bits);

  490. 

  491.         if(s->ac){

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

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

  494.             }else{

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

  496.             }

  497.         }else{

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

  499. 

  500.             if(run_mode){

  501. 

  502.                 if(diff){

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

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

  505.                         run_index++;

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

  507.                     }

  508. 

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

  510.                     if(run_index) run_index--;

  511.                     run_count=0;

  512.                     run_mode=0;

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

  514.                 }else{

  515.                     run_count++;

  516.                 }

  517.             }

  518. 

  519. //            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));

  520. 

  521.             if(run_mode == 0)

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

  523.         }

  524.     }

  525.     if(run_mode){

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

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

  528.             run_index++;

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

  530.         }

  531. 

  532.         if(run_count)

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

  534.     }

  535.     s->run_index= run_index;

  536. 

  537.     return 0;

  538. }

  539. 

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

  541.     int x,y,i;

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

  543.     int16_t *sample[3];

  544.     s->run_index=0;

  545. 

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

  547. 

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

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

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

  551. 

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

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

  554. //{START_TIMER

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

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

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

  558.             }

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

  560.         }else{

  561.             if(s->packed_at_lsb){

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

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

  564.                 }

  565.             }else{

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

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

  568.                 }

  569.             }

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

  571.         }

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

  573.     }

  574. }

  575. 

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

  577.     int x, y, p, i;

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

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

  580.     s->run_index=0;

  581. 

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

  583. 

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

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

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

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

  588. 

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

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

  591.             int b= v&0xFF;

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

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

  594.             int a=  v>>24;

  595. 

  596.             b -= g;

  597.             r -= g;

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

  599.             b += 0x100;

  600.             r += 0x100;

  601. 

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

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

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

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

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

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

  608.         }

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

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

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

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

  613.         }

  614.     }

  615. }

  616. 

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

  618.     int last=0;

  619.     int i;

  620.     uint8_t state[CONTEXT_SIZE];

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

  622. 

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

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

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

  626.             last= i;

  627.         }

  628.     }

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

  630. }

  631. 

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

  633.     int i;

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

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

  636. }

  637. 

  638. static void write_header(FFV1Context *f){

  639.     uint8_t state[CONTEXT_SIZE];

  640.     int i, j;

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

  642. 

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

  644. 

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

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

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

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

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

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

  651.             }

  652.         }

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

  654.         if(f->version>0)

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

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

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

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

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

  660. 

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

  662.     }else{

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

  664.         if(f->version < 3){

  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. }

  679. #endif /* CONFIG_FFV1_ENCODER */

  680. 

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

  682.     FFV1Context *s = avctx->priv_data;

  683. 

  684.     s->avctx= avctx;

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

  686. 

  687.     avcodec_get_frame_defaults(&s->picture);

  688. 

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

  690. 

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

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

  693. 

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

  695.     //defaults

  696.     s->num_h_slices=1;

  697.     s->num_v_slices=1;

  698. 

  699. 

  700.     return 0;

  701. }

  702. 

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

  704.     int j;

  705. 

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

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

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

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

  710. 

  711.             if(fs->ac){

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

  713.                 if(!p->    state)

  714.                     return AVERROR(ENOMEM);

  715.             }else{

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

  717.                 if(!p->vlc_state)

  718.                     return AVERROR(ENOMEM);

  719.             }

  720.         }

  721. 

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

  723.             //FIXME only redo if state_transition changed

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

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

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

  727.             }

  728.         }

  729. 

  730.     return 0;

  731. }

  732. 

  733. static int init_slices_state(FFV1Context *f){

  734.     int i;

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

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

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

  738.             return -1;

  739.     }

  740.     return 0;

  741. }

  742. 

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

  744.     int i;

  745. 

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

  747. 

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

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

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

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

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

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

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

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

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

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

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

  759. 

  760.         fs->slice_width = sxe - sxs;

  761.         fs->slice_height= sye - sys;

  762.         fs->slice_x     = sxs;

  763.         fs->slice_y     = sys;

  764. 

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

  766.         if (!fs->sample_buffer)

  767.             return AVERROR(ENOMEM);

  768.     }

  769.     return 0;

  770. }

  771. 

  772. static int allocate_initial_states(FFV1Context *f){

  773.     int i;

  774. 

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

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

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

  778.             return AVERROR(ENOMEM);

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

  780.     }

  781.     return 0;

  782. }

  783. 

  784. #if CONFIG_FFV1_ENCODER

  785. static int write_extra_header(FFV1Context *f){

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

  787.     uint8_t state[CONTEXT_SIZE];

  788.     int i, j, k;

  789.     uint8_t state2[32][CONTEXT_SIZE];

  790.     unsigned v;

  791. 

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

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

  794. 

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

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

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

  798. 

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

  800.     if(f->version > 2)

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

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

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

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

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

  806.         }

  807.     }

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

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

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

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

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

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

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

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

  816. 

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

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

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

  820. 

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

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

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

  824.                 break;

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

  826.             put_rac(c, state, 1);

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

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

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

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

  831.                 }

  832.             }

  833.         }else{

  834.             put_rac(c, state, 0);

  835.         }

  836.     }

  837. 

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

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

  840.     }

  841. 

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

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

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

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

  846. 

  847.     return 0;

  848. }

  849. 

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

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

  852. 

  853.     do{

  854.         changed=0;

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

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

  857. #define COST(old, new) \

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

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

  860. 

  861. #define COST2(old, new) \

  862.     COST(old, new)\

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

  864. 

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

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

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

  868.                     int j;

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

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

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

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

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

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

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

  876.                     }

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

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

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

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

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

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

  883.                         }

  884.                     }

  885.                     print=changed=1;

  886.                 }

  887.             }

  888.         }

  889.     }while(changed);

  890.     return print;

  891. }

  892. 

  893. static av_cold int encode_init(AVCodecContext *avctx)

  894. {

  895.     FFV1Context *s = avctx->priv_data;

  896.     int i, j, k, m;

  897. 

  898.     common_init(avctx);

  899. 

  900.     s->version=0;

  901. 

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

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

  904. 

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

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

  907.         return -1;

  908.     }

  909. 

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

  911. 

  912.     if(s->ac>1)

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

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

  915. 

  916.     s->plane_count=3;

  917.     switch(avctx->pix_fmt){

  918.     case PIX_FMT_YUV444P9:

  919.     case PIX_FMT_YUV422P9:

  920.     case PIX_FMT_YUV420P9:

  921.         if (!avctx->bits_per_raw_sample)

  922.             s->bits_per_raw_sample = 9;

  923.     case PIX_FMT_YUV444P10:

  924.     case PIX_FMT_YUV420P10:

  925.     case PIX_FMT_YUV422P10:

  926.         s->packed_at_lsb = 1;

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

  928.             s->bits_per_raw_sample = 10;

  929.     case PIX_FMT_GRAY16:

  930.     case PIX_FMT_YUV444P16:

  931.     case PIX_FMT_YUV422P16:

  932.     case PIX_FMT_YUV420P16:

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

  934.             s->bits_per_raw_sample = 16;

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

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

  937.         }

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

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

  940.             return -1;

  941.         }

  942.         if(!s->ac){

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

  944.             return -1;

  945.         }

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

  947.     case PIX_FMT_GRAY8:

  948.     case PIX_FMT_YUV444P:

  949.     case PIX_FMT_YUV440P:

  950.     case PIX_FMT_YUV422P:

  951.     case PIX_FMT_YUV420P:

  952.     case PIX_FMT_YUV411P:

  953.     case PIX_FMT_YUV410P:

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

  955.         s->colorspace= 0;

  956.         break;

  957.     case PIX_FMT_YUVA444P:

  958.     case PIX_FMT_YUVA420P:

  959.         s->chroma_planes= 1;

  960.         s->colorspace= 0;

  961.         s->transparency= 1;

  962.         break;

  963.     case PIX_FMT_RGB32:

  964.         s->colorspace= 1;

  965.         s->transparency= 1;

  966.         break;

  967.     case PIX_FMT_0RGB32:

  968.         s->colorspace= 1;

  969.         break;

  970.     default:

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

  972.         return -1;

  973.     }

  974.     if (s->transparency) {

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

  976.     }

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

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

  979.         return AVERROR(EINVAL);

  980.     }

  981. 

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

  983.         s->quant_table_count=2;

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

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

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

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

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

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

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

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

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

  993.         }else{

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

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

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

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

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

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

  1000.             s->quant_tables[1][3][i]=   5*11*11*quant5_10bit[i];

  1001.             s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];

  1002.         }

  1003.     }

  1004.     s->context_count[0]= (11*11*11+1)/2;

  1005.     s->context_count[1]= (11*11*5*5*5+1)/2;

  1006.     memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table));

  1007. 

  1008.     for(i=0; i<s->plane_count; i++){

  1009.         PlaneContext * const p= &s->plane[i];

  1010. 

  1011.         memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));

  1012.         p->quant_table_index= avctx->context_model;

  1013.         p->context_count= s->context_count[p->quant_table_index];

  1014.     }

  1015. 

  1016.     if(allocate_initial_states(s) < 0)

  1017.         return AVERROR(ENOMEM);

  1018. 

  1019.     avctx->coded_frame= &s->picture;

  1020.     if(!s->transparency)

  1021.         s->plane_count= 2;

  1022.     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);

  1023. 

  1024.     s->picture_number=0;

  1025. 

  1026.     if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){

  1027.         for(i=0; i<s->quant_table_count; i++){

  1028.             s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i]));

  1029.             if(!s->rc_stat2[i])

  1030.                 return AVERROR(ENOMEM);

  1031.         }

  1032.     }

  1033.     if(avctx->stats_in){

  1034.         char *p= avctx->stats_in;

  1035.         uint8_t best_state[256][256];

  1036.         int gob_count=0;

  1037.         char *next;

  1038. 

  1039.         av_assert0(s->version>=2);

  1040. 

  1041.         for(;;){

  1042.             for(j=0; j<256; j++){

  1043.                 for(i=0; i<2; i++){

  1044.                     s->rc_stat[j][i]= strtol(p, &next, 0);

  1045.                     if(next==p){

  1046.                         av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d [%s]\n", j,i,p);

  1047.                         return -1;

  1048.                     }

  1049.                     p=next;

  1050.                 }

  1051.             }

  1052.             for(i=0; i<s->quant_table_count; i++){

  1053.                 for(j=0; j<s->context_count[i]; j++){

  1054.                     for(k=0; k<32; k++){

  1055.                         for(m=0; m<2; m++){

  1056.                             s->rc_stat2[i][j][k][m]= strtol(p, &next, 0);

  1057.                             if(next==p){

  1058.                                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p);

  1059.                                 return -1;

  1060.                             }

  1061.                             p=next;

  1062.                         }

  1063.                     }

  1064.                 }

  1065.             }

  1066.             gob_count= strtol(p, &next, 0);

  1067.             if(next==p || gob_count <0){

  1068.                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");

  1069.                 return -1;

  1070.             }

  1071.             p=next;

  1072.             while(*p=='\n' || *p==' ') p++;

  1073.             if(p[0]==0) break;

  1074.         }

  1075.         sort_stt(s, s->state_transition);

  1076. 

  1077.         find_best_state(best_state, s->state_transition);

  1078. 

  1079.         for(i=0; i<s->quant_table_count; i++){

  1080.             for(j=0; j<s->context_count[i]; j++){

  1081.                 for(k=0; k<32; k++){

  1082.                     double p= 128;

  1083.                     if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){

  1084.                         p=256.0*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]);

  1085.                     }

  1086.                     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)];

  1087.                 }

  1088.             }

  1089.         }

  1090.     }

  1091. 

  1092.     if(s->version>1){

  1093.         for(s->num_v_slices=2; s->num_v_slices<9; s->num_v_slices++){

  1094.             for(s->num_h_slices=s->num_v_slices; s->num_h_slices<2*s->num_v_slices; s->num_h_slices++){

  1095.                 if(avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64)

  1096.                     goto slices_ok;

  1097.             }

  1098.         }

  1099.         av_log(avctx, AV_LOG_ERROR, "Unsupported number %d of slices requested\n", avctx->slices);

  1100.         return -1;

  1101.         slices_ok:

  1102.         write_extra_header(s);

  1103.     }

  1104. 

  1105.     if(init_slice_contexts(s) < 0)

  1106.         return -1;

  1107.     if(init_slices_state(s) < 0)

  1108.         return -1;

  1109. 

  1110. #define STATS_OUT_SIZE 1024*1024*6

  1111.     if(avctx->flags & CODEC_FLAG_PASS1){

  1112.         avctx->stats_out= av_mallocz(STATS_OUT_SIZE);

  1113.         for(i=0; i<s->quant_table_count; i++){

  1114.             for(j=0; j<s->slice_count; j++){

  1115.                 FFV1Context *sf= s->slice_context[j];

  1116.                 av_assert0(!sf->rc_stat2[i]);

  1117.                 sf->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*sf->rc_stat2[i]));

  1118.                 if(!sf->rc_stat2[i])

  1119.                     return AVERROR(ENOMEM);

  1120.             }

  1121.         }

  1122.     }

  1123. 

  1124.     return 0;

  1125. }

  1126. #endif /* CONFIG_FFV1_ENCODER */

  1127. 

  1128. 

  1129. static void clear_slice_state(FFV1Context *f, FFV1Context *fs){

  1130.     int i, j;

  1131. 

  1132.         for(i=0; i<f->plane_count; i++){

  1133.             PlaneContext *p= &fs->plane[i];

  1134. 

  1135.             p->interlace_bit_state[0]= 128;

  1136.             p->interlace_bit_state[1]= 128;

  1137. 

  1138.             if(fs->ac){

  1139.                 if(f->initial_states[p->quant_table_index]){

  1140.                     memcpy(p->state, f->initial_states[p->quant_table_index], CONTEXT_SIZE*p->context_count);

  1141.                 }else

  1142.                 memset(p->state, 128, CONTEXT_SIZE*p->context_count);

  1143.             }else{

  1144.                 for(j=0; j<p->context_count; j++){

  1145.                     p->vlc_state[j].drift= 0;

  1146.                     p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2);

  1147.                     p->vlc_state[j].bias= 0;

  1148.                     p->vlc_state[j].count= 1;

  1149.                 }

  1150.             }

  1151.         }

  1152. }

  1153. 

  1154. static void clear_state(FFV1Context *f){

  1155.     int si;

  1156. 

  1157.     for(si=0; si<f->slice_count; si++){

  1158.         FFV1Context *fs= f->slice_context[si];

  1159.         clear_slice_state(f, fs);

  1160.     }

  1161. }

  1162. 

  1163. #if CONFIG_FFV1_ENCODER

  1164. 

  1165. static void encode_slice_header(FFV1Context *f, FFV1Context *fs){

  1166.     RangeCoder *c = &fs->c;

  1167.     uint8_t state[CONTEXT_SIZE];

  1168.     int j;

  1169.     memset(state, 128, sizeof(state));

  1170. 

  1171.     put_symbol(c, state, (fs->slice_x     +1)*f->num_h_slices / f->width   , 0);

  1172.     put_symbol(c, state, (fs->slice_y     +1)*f->num_v_slices / f->height  , 0);

  1173.     put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);

  1174.     put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);

  1175.     for(j=0; j<f->plane_count; j++){

  1176.         put_symbol(c, state, f->plane[j].quant_table_index, 0);

  1177.         av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);

  1178.     }

  1179.     if(!f->picture.interlaced_frame) put_symbol(c, state, 3, 0);

  1180.     else                             put_symbol(c, state, 1 + !f->picture.top_field_first, 0);

  1181.     put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);

  1182.     put_symbol(c, state, f->picture.sample_aspect_ratio.den, 0);

  1183. }

  1184. 

  1185. static int encode_slice(AVCodecContext *c, void *arg){

  1186.     FFV1Context *fs= *(void**)arg;

  1187.     FFV1Context *f= fs->avctx->priv_data;

  1188.     int width = fs->slice_width;

  1189.     int height= fs->slice_height;

  1190.     int x= fs->slice_x;

  1191.     int y= fs->slice_y;

  1192.     AVFrame * const p= &f->picture;

  1193.     const int ps= (f->bits_per_raw_sample>8)+1;

  1194. 

  1195.     if(f->version > 2){

  1196.         encode_slice_header(f, fs);

  1197.     }

  1198. 

  1199.     if(f->colorspace==0){

  1200.         const int chroma_width = -((-width )>>f->chroma_h_shift);

  1201.         const int chroma_height= -((-height)>>f->chroma_v_shift);

  1202.         const int cx= x>>f->chroma_h_shift;

  1203.         const int cy= y>>f->chroma_v_shift;

  1204. 

  1205.         encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);

  1206. 

  1207.         if (f->chroma_planes){

  1208.             encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);

  1209.             encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);

  1210.         }

  1211.         if (fs->transparency)

  1212.             encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);

  1213.     }else{

  1214.         encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);

  1215.     }

  1216.     emms_c();

  1217. 

  1218.     return 0;

  1219. }

  1220. 

  1221. static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,

  1222.                         const AVFrame *pict, int *got_packet)

  1223. {

  1224.     FFV1Context *f = avctx->priv_data;

  1225.     RangeCoder * const c= &f->slice_context[0]->c;

  1226.     AVFrame * const p= &f->picture;

  1227.     int used_count= 0;

  1228.     uint8_t keystate=128;

  1229.     uint8_t *buf_p;

  1230.     int i, ret;

  1231. 

  1232.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8

  1233.                                   + FF_MIN_BUFFER_SIZE)) < 0)

  1234.         return ret;

  1235. 

  1236.     ff_init_range_encoder(c, pkt->data, pkt->size);

  1237.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1238. 

  1239.     *p = *pict;

  1240.     p->pict_type= AV_PICTURE_TYPE_I;

  1241. 

  1242.     if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){

  1243.         put_rac(c, &keystate, 1);

  1244.         p->key_frame= 1;

  1245.         f->gob_count++;

  1246.         write_header(f);

  1247.         clear_state(f);

  1248.     }else{

  1249.         put_rac(c, &keystate, 0);

  1250.         p->key_frame= 0;

  1251.     }

  1252. 

  1253.     if(!f->ac){

  1254.         used_count += ff_rac_terminate(c);

  1255. //printf("pos=%d\n", used_count);

  1256.         init_put_bits(&f->slice_context[0]->pb, pkt->data + used_count, pkt->size - used_count);

  1257.     }else if (f->ac>1){

  1258.         int i;

  1259.         for(i=1; i<256; i++){

  1260.             c->one_state[i]= f->state_transition[i];

  1261.             c->zero_state[256-i]= 256-c->one_state[i];

  1262.         }

  1263.     }

  1264. 

  1265.     for(i=1; i<f->slice_count; i++){

  1266.         FFV1Context *fs= f->slice_context[i];

  1267.         uint8_t *start = pkt->data + (pkt->size-used_count)*i/f->slice_count;

  1268.         int len = pkt->size/f->slice_count;

  1269. 

  1270.         if(fs->ac){

  1271.             ff_init_range_encoder(&fs->c, start, len);

  1272.         }else{

  1273.             init_put_bits(&fs->pb, start, len);

  1274.         }

  1275.     }

  1276.     avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));

  1277. 

  1278.     buf_p = pkt->data;

  1279.     for(i=0; i<f->slice_count; i++){

  1280.         FFV1Context *fs= f->slice_context[i];

  1281.         int bytes;

  1282. 

  1283.         if(fs->ac){

  1284.             uint8_t state=128;

  1285.             put_rac(&fs->c, &state, 0);

  1286.             bytes= ff_rac_terminate(&fs->c);

  1287.         }else{

  1288.             flush_put_bits(&fs->pb); //nicer padding FIXME

  1289.             bytes= used_count + (put_bits_count(&fs->pb)+7)/8;

  1290.             used_count= 0;

  1291.         }

  1292.         if(i>0){

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

  1294.             memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, 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 = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);

  1301.             AV_WL32(buf_p + bytes, v); bytes += 4;

  1302.         }

  1303.         buf_p += bytes;

  1304.     }

  1305. 

  1306.     if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){

  1307.         int j, k, m;

  1308.         char *p= avctx->stats_out;

  1309.         char *end= p + STATS_OUT_SIZE;

  1310. 

  1311.         memset(f->rc_stat, 0, sizeof(f->rc_stat));

  1312.         for(i=0; i<f->quant_table_count; i++)

  1313.             memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i]));

  1314. 

  1315.         for(j=0; j<f->slice_count; j++){

  1316.             FFV1Context *fs= f->slice_context[j];

  1317.             for(i=0; i<256; i++){

  1318.                 f->rc_stat[i][0] += fs->rc_stat[i][0];

  1319.                 f->rc_stat[i][1] += fs->rc_stat[i][1];

  1320.             }

  1321.             for(i=0; i<f->quant_table_count; i++){

  1322.                 for(k=0; k<f->context_count[i]; k++){

  1323.                     for(m=0; m<32; m++){

  1324.                         f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];

  1325.                         f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];

  1326.                     }

  1327.                 }

  1328.             }

  1329.         }

  1330. 

  1331.         for(j=0; j<256; j++){

  1332.             snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat[j][0], f->rc_stat[j][1]);

  1333.             p+= strlen(p);

  1334.         }

  1335.         snprintf(p, end-p, "\n");

  1336. 

  1337.         for(i=0; i<f->quant_table_count; i++){

  1338.             for(j=0; j<f->context_count[i]; j++){

  1339.                 for(m=0; m<32; m++){

  1340.                     snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);

  1341.                     p+= strlen(p);

  1342.                 }

  1343.             }

  1344.         }

  1345.         snprintf(p, end-p, "%d\n", f->gob_count);

  1346.     } else if(avctx->flags&CODEC_FLAG_PASS1)

  1347.         avctx->stats_out[0] = '\0';

  1348. 

  1349.     f->picture_number++;

  1350.     pkt->size   = buf_p - pkt->data;

  1351.     pkt->flags |= AV_PKT_FLAG_KEY*p->key_frame;

  1352.     *got_packet = 1;

  1353. 

  1354.     return 0;

  1355. }

  1356. #endif /* CONFIG_FFV1_ENCODER */

  1357. 

  1358. static av_cold int common_end(AVCodecContext *avctx){

  1359.     FFV1Context *s = avctx->priv_data;

  1360.     int i, j;

  1361. 

  1362.     if (avctx->codec->decode && s->picture.data[0])

  1363.         avctx->release_buffer(avctx, &s->picture);

  1364. 

  1365.     for(j=0; j<s->slice_count; j++){

  1366.         FFV1Context *fs= s->slice_context[j];

  1367.         for(i=0; i<s->plane_count; i++){

  1368.             PlaneContext *p= &fs->plane[i];

  1369. 

  1370.             av_freep(&p->state);

  1371.             av_freep(&p->vlc_state);

  1372.         }

  1373.         av_freep(&fs->sample_buffer);

  1374.     }

  1375. 

  1376.     av_freep(&avctx->stats_out);

  1377.     for(j=0; j<s->quant_table_count; j++){

  1378.         av_freep(&s->initial_states[j]);

  1379.         for(i=0; i<s->slice_count; i++){

  1380.             FFV1Context *sf= s->slice_context[i];

  1381.             av_freep(&sf->rc_stat2[j]);

  1382.         }

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

  1384.     }

  1385. 

  1386.     for(i=0; i<s->slice_count; i++){

  1387.         av_freep(&s->slice_context[i]);

  1388.     }

  1389. 

  1390.     return 0;

  1391. }

  1392. 

  1393. static av_always_inline void decode_line(FFV1Context *s, int w,

  1394.                                          int16_t *sample[2],

  1395.                                          int plane_index, int bits)

  1396. {

  1397.     PlaneContext * const p= &s->plane[plane_index];

  1398.     RangeCoder * const c= &s->c;

  1399.     int x;

  1400.     int run_count=0;

  1401.     int run_mode=0;

  1402.     int run_index= s->run_index;

  1403. 

  1404.     for(x=0; x<w; x++){

  1405.         int diff, context, sign;

  1406. 

  1407.         context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);

  1408.         if(context < 0){

  1409.             context= -context;

  1410.             sign=1;

  1411.         }else

  1412.             sign=0;

  1413. 

  1414.         av_assert2(context < p->context_count);

  1415. 

  1416.         if(s->ac){

  1417.             diff= get_symbol_inline(c, p->state[context], 1);

  1418.         }else{

  1419.             if(context == 0 && run_mode==0) run_mode=1;

  1420. 

  1421.             if(run_mode){

  1422.                 if(run_count==0 && run_mode==1){

  1423.                     if(get_bits1(&s->gb)){

  1424.                         run_count = 1<<ff_log2_run[run_index];

  1425.                         if(x + run_count <= w) run_index++;

  1426.                     }else{

  1427.                         if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);

  1428.                         else run_count=0;

  1429.                         if(run_index) run_index--;

  1430.                         run_mode=2;

  1431.                     }

  1432.                 }

  1433.                 run_count--;

  1434.                 if(run_count < 0){

  1435.                     run_mode=0;

  1436.                     run_count=0;

  1437.                     diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);

  1438.                     if(diff>=0) diff++;

  1439.                 }else

  1440.                     diff=0;

  1441.             }else

  1442.                 diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);

  1443. 

  1444. //            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));

  1445.         }

  1446. 

  1447.         if(sign) diff= -diff;

  1448. 

  1449.         sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);

  1450.     }

  1451.     s->run_index= run_index;

  1452. }

  1453. 

  1454. static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){

  1455.     int x, y;

  1456.     int16_t *sample[2];

  1457.     sample[0]=s->sample_buffer    +3;

  1458.     sample[1]=s->sample_buffer+w+6+3;

  1459. 

  1460.     s->run_index=0;

  1461. 

  1462.     memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer));

  1463. 

  1464.     for(y=0; y<h; y++){

  1465.         int16_t *temp = sample[0]; //FIXME try a normal buffer

  1466. 

  1467.         sample[0]= sample[1];

  1468.         sample[1]= temp;

  1469. 

  1470.         sample[1][-1]= sample[0][0  ];

  1471.         sample[0][ w]= sample[0][w-1];

  1472. 

  1473. //{START_TIMER

  1474.         if(s->avctx->bits_per_raw_sample <= 8){

  1475.             decode_line(s, w, sample, plane_index, 8);

  1476.             for(x=0; x<w; x++){

  1477.                 src[x + stride*y]= sample[1][x];

  1478.             }

  1479.         }else{

  1480.             decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);

  1481.             if(s->packed_at_lsb){

  1482.                 for(x=0; x<w; x++){

  1483.                     ((uint16_t*)(src + stride*y))[x]= sample[1][x];

  1484.                 }

  1485.             }else{

  1486.                 for(x=0; x<w; x++){

  1487.                     ((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample);

  1488.                 }

  1489.             }

  1490.         }

  1491. //STOP_TIMER("decode-line")}

  1492.     }

  1493. }

  1494. 

  1495. static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){

  1496.     int x, y, p;

  1497.     int16_t *sample[4][2];

  1498.     for(x=0; x<4; x++){

  1499.         sample[x][0] = s->sample_buffer +  x*2   *(w+6) + 3;

  1500.         sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3;

  1501.     }

  1502. 

  1503.     s->run_index=0;

  1504. 

  1505.     memset(s->sample_buffer, 0, 8*(w+6)*sizeof(*s->sample_buffer));

  1506. 

  1507.     for(y=0; y<h; y++){

  1508.         for(p=0; p<3 + s->transparency; p++){

  1509.             int16_t *temp = sample[p][0]; //FIXME try a normal buffer

  1510. 

  1511.             sample[p][0]= sample[p][1];

  1512.             sample[p][1]= temp;

  1513. 

  1514.             sample[p][1][-1]= sample[p][0][0  ];

  1515.             sample[p][0][ w]= sample[p][0][w-1];

  1516.             decode_line(s, w, sample[p], (p+1)/2, 9);

  1517.         }

  1518.         for(x=0; x<w; x++){

  1519.             int g= sample[0][1][x];

  1520.             int b= sample[1][1][x];

  1521.             int r= sample[2][1][x];

  1522.             int a= sample[3][1][x];

  1523. 

  1524. //            assert(g>=0 && b>=0 && r>=0);

  1525. //            assert(g<256 && b<512 && r<512);

  1526. 

  1527.             b -= 0x100;

  1528.             r -= 0x100;

  1529.             g -= (b + r)>>2;

  1530.             b += g;

  1531.             r += g;

  1532. 

  1533.             src[x + stride*y]= b + (g<<8) + (r<<16) + (a<<24);

  1534.         }

  1535.     }

  1536. }

  1537. 

  1538. static int decode_slice_header(FFV1Context *f, FFV1Context *fs){

  1539.     RangeCoder *c = &fs->c;

  1540.     uint8_t state[CONTEXT_SIZE];

  1541.     unsigned ps, i, context_count;

  1542.     memset(state, 128, sizeof(state));

  1543. 

  1544.     av_assert0(f->version > 2);

  1545. 

  1546.     fs->slice_x     = get_symbol(c, state, 0)   *f->width ;

  1547.     fs->slice_y     = get_symbol(c, state, 0)   *f->height;

  1548.     fs->slice_width =(get_symbol(c, state, 0)+1)*f->width  + fs->slice_x;

  1549.     fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;

  1550. 

  1551.     fs->slice_x /= f->num_h_slices;

  1552.     fs->slice_y /= f->num_v_slices;

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

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

  1555.     if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)

  1556.         return -1;

  1557.     if(    (unsigned)fs->slice_x + (uint64_t)fs->slice_width  > f->width

  1558.         || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)

  1559.         return -1;

  1560. 

  1561.     for(i=0; i<f->plane_count; i++){

  1562.         PlaneContext * const p= &fs->plane[i];

  1563.         int idx=get_symbol(c, state, 0);

  1564.         if(idx > (unsigned)f->quant_table_count){

  1565.             av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");

  1566.             return -1;

  1567.         }

  1568.         p->quant_table_index= idx;

  1569.         memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));

  1570.         context_count= f->context_count[idx];

  1571. 

  1572.         if(p->context_count < context_count){

  1573.             av_freep(&p->state);

  1574.             av_freep(&p->vlc_state);

  1575.         }

  1576.         p->context_count= context_count;

  1577.     }

  1578. 

  1579.     ps = get_symbol(c, state, 0);

  1580.     if(ps==1){

  1581.         f->picture.interlaced_frame = 1;

  1582.         f->picture.top_field_first  = 1;

  1583.     } else if(ps==2){

  1584.         f->picture.interlaced_frame = 1;

  1585.         f->picture.top_field_first  = 0;

  1586.     } else if(ps==3){

  1587.         f->picture.interlaced_frame = 0;

  1588.     }

  1589.     f->picture.sample_aspect_ratio.num = get_symbol(c, state, 0);

  1590.     f->picture.sample_aspect_ratio.den = get_symbol(c, state, 0);

  1591. 

  1592.     return 0;

  1593. }

  1594. 

  1595. static int decode_slice(AVCodecContext *c, void *arg){

  1596.     FFV1Context *fs= *(void**)arg;

  1597.     FFV1Context *f= fs->avctx->priv_data;

  1598.     int width, height, x, y;

  1599.     const int ps= (c->bits_per_raw_sample>8)+1;

  1600.     AVFrame * const p= &f->picture;

  1601. 

  1602.     if(f->version > 2){

  1603.         if(decode_slice_header(f, fs) < 0)

  1604.             return AVERROR_INVALIDDATA;

  1605. 

  1606.         if(init_slice_state(f, fs) < 0)

  1607.             return AVERROR(ENOMEM);

  1608.     }

  1609.     if(f->picture.key_frame)

  1610.         clear_slice_state(f, fs);

  1611.     width = fs->slice_width;

  1612.     height= fs->slice_height;

  1613.     x= fs->slice_x;

  1614.     y= fs->slice_y;

  1615. 

  1616.     av_assert1(width && height);

  1617.     if(f->colorspace==0){

  1618.         const int chroma_width = -((-width )>>f->chroma_h_shift);

  1619.         const int chroma_height= -((-height)>>f->chroma_v_shift);

  1620.         const int cx= x>>f->chroma_h_shift;

  1621.         const int cy= y>>f->chroma_v_shift;

  1622.         decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);

  1623. 

  1624.         if (f->chroma_planes){

  1625.             decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);

  1626.             decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);

  1627.         }

  1628.         if (fs->transparency)

  1629.             decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);

  1630.     }else{

  1631.         decode_rgb_frame(fs, (uint32_t*)p->data[0] + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);

  1632.     }

  1633. 

  1634.     emms_c();

  1635. 

  1636.     return 0;

  1637. }

  1638. 

  1639. static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){

  1640.     int v;

  1641.     int i=0;

  1642.     uint8_t state[CONTEXT_SIZE];

  1643. 

  1644.     memset(state, 128, sizeof(state));

  1645. 

  1646.     for(v=0; i<128 ; v++){

  1647.         int len= get_symbol(c, state, 0) + 1;

  1648. 

  1649.         if(len + i > 128) return -1;

  1650. 

  1651.         while(len--){

  1652.             quant_table[i] = scale*v;

  1653.             i++;

  1654. //printf("%2d ",v);

  1655. //if(i%16==0) printf("\n");

  1656.         }

  1657.     }

  1658. 

  1659.     for(i=1; i<128; i++){

  1660.         quant_table[256-i]= -quant_table[i];

  1661.     }

  1662.     quant_table[128]= -quant_table[127];

  1663. 

  1664.     return 2*v - 1;

  1665. }

  1666. 

  1667. static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){

  1668.     int i;

  1669.     int context_count=1;

  1670. 

  1671.     for(i=0; i<5; i++){

  1672.         context_count*= read_quant_table(c, quant_table[i], context_count);

  1673.         if(context_count > 32768U){

  1674.             return -1;

  1675.         }

  1676.     }

  1677.     return (context_count+1)/2;

  1678. }

  1679. 

  1680. static int read_extra_header(FFV1Context *f){

  1681.     RangeCoder * const c= &f->c;

  1682.     uint8_t state[CONTEXT_SIZE];

  1683.     int i, j, k;

  1684.     uint8_t state2[32][CONTEXT_SIZE];

  1685. 

  1686.     memset(state2, 128, sizeof(state2));

  1687.     memset(state, 128, sizeof(state));

  1688. 

  1689.     ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);

  1690.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1691. 

  1692.     f->version= get_symbol(c, state, 0);

  1693.     if(f->version > 2)

  1694.         f->minor_version= get_symbol(c, state, 0);

  1695.     f->ac= f->avctx->coder_type= get_symbol(c, state, 0);

  1696.     if(f->ac>1){

  1697.         for(i=1; i<256; i++){

  1698.             f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];

  1699.         }

  1700.     }

  1701.     f->colorspace= get_symbol(c, state, 0); //YUV cs type

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

  1703.     f->chroma_planes= get_rac(c, state);

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

  1705.     f->chroma_v_shift= get_symbol(c, state, 0);

  1706.     f->transparency= get_rac(c, state);

  1707.     f->plane_count= 2 + f->transparency;

  1708.     f->num_h_slices= 1 + get_symbol(c, state, 0);

  1709.     f->num_v_slices= 1 + get_symbol(c, state, 0);

  1710.     if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){

  1711.         av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");

  1712.         return -1;

  1713.     }

  1714. 

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

  1716.     if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES)

  1717.         return -1;

  1718.     for(i=0; i<f->quant_table_count; i++){

  1719.         if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){

  1720.             av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");

  1721.             return -1;

  1722.         }

  1723.     }

  1724. 

  1725.     if(allocate_initial_states(f) < 0)

  1726.         return AVERROR(ENOMEM);

  1727. 

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

  1729.         if(get_rac(c, state)){

  1730.             for(j=0; j<f->context_count[i]; j++){

  1731.                 for(k=0; k<CONTEXT_SIZE; k++){

  1732.                     int pred= j ? f->initial_states[i][j-1][k] : 128;

  1733.                     f->initial_states[i][j][k]= (pred+get_symbol(c, state2[k], 1))&0xFF;

  1734.                 }

  1735.             }

  1736.         }

  1737.     }

  1738. 

  1739.     if(f->version > 2){

  1740.         f->ec = get_symbol(c, state, 0);

  1741.     }

  1742. 

  1743.     if(f->version > 2){

  1744.         unsigned v;

  1745.         v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);

  1746.         if(v){

  1747.             av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);

  1748.             return AVERROR_INVALIDDATA;

  1749.         }

  1750.     }

  1751. 

  1752.     return 0;

  1753. }

  1754. 

  1755. static int read_header(FFV1Context *f){

  1756.     uint8_t state[CONTEXT_SIZE];

  1757.     int i, j, context_count;

  1758.     RangeCoder * const c= &f->slice_context[0]->c;

  1759. 

  1760.     memset(state, 128, sizeof(state));

  1761. 

  1762.     if(f->version < 2){

  1763.         f->version= get_symbol(c, state, 0);

  1764.         f->ac= f->avctx->coder_type= get_symbol(c, state, 0);

  1765.         if(f->ac>1){

  1766.             for(i=1; i<256; i++){

  1767.                 f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];

  1768.             }

  1769.         }

  1770.         f->colorspace= get_symbol(c, state, 0); //YUV cs type

  1771.         if(f->version>0)

  1772.             f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);

  1773.         f->chroma_planes= get_rac(c, state);

  1774.         f->chroma_h_shift= get_symbol(c, state, 0);

  1775.         f->chroma_v_shift= get_symbol(c, state, 0);

  1776.         f->transparency= get_rac(c, state);

  1777.         f->plane_count= 2 + f->transparency;

  1778.     }

  1779. 

  1780.     if(f->colorspace==0){

  1781.         if(!f->transparency && !f->chroma_planes){

  1782.             if (f->avctx->bits_per_raw_sample<=8)

  1783.                 f->avctx->pix_fmt= PIX_FMT_GRAY8;

  1784.             else

  1785.                 f->avctx->pix_fmt= PIX_FMT_GRAY16;

  1786.         }else if(f->avctx->bits_per_raw_sample<=8 && !f->transparency){

  1787.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1788.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;

  1789.             case 0x01: f->avctx->pix_fmt= PIX_FMT_YUV440P; break;

  1790.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;

  1791.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;

  1792.             case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;

  1793.             case 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;

  1794.             default:

  1795.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1796.                 return -1;

  1797.             }

  1798.         }else if(f->avctx->bits_per_raw_sample<=8 && f->transparency){

  1799.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1800.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUVA444P; break;

  1801.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUVA420P; break;

  1802.             default:

  1803.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1804.                 return -1;

  1805.             }

  1806.         }else if(f->avctx->bits_per_raw_sample==9) {

  1807.             f->packed_at_lsb=1;

  1808.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1809.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P9; break;

  1810.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P9; break;

  1811.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P9; 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==10) {

  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_YUV444P10; break;

  1820.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P10; break;

  1821.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P10; break;

  1822.             default:

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

  1824.                 return -1;

  1825.             }

  1826.         }else {

  1827.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1828.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;

  1829.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;

  1830.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break;

  1831.             default:

  1832.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1833.                 return -1;

  1834.             }

  1835.         }

  1836.     }else if(f->colorspace==1){

  1837.         if(f->chroma_h_shift || f->chroma_v_shift){

  1838.             av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");

  1839.             return -1;

  1840.         }

  1841.         if(f->transparency) f->avctx->pix_fmt= PIX_FMT_RGB32;

  1842.         else                f->avctx->pix_fmt= PIX_FMT_0RGB32;

  1843.     }else{

  1844.         av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");

  1845.         return -1;

  1846.     }

  1847. 

  1848. //printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);

  1849.     if(f->version < 2){

  1850.         context_count= read_quant_tables(c, f->quant_table);

  1851.         if(context_count < 0){

  1852.                 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");

  1853.                 return -1;

  1854.         }

  1855.     }else{

  1856.         f->slice_count= get_symbol(c, state, 0);

  1857.         if(f->slice_count > (unsigned)MAX_SLICES)

  1858.             return -1;

  1859.     }

  1860. 

  1861.     for(j=0; j<f->slice_count; j++){

  1862.         FFV1Context *fs= f->slice_context[j];

  1863.         fs->ac= f->ac;

  1864.         fs->packed_at_lsb= f->packed_at_lsb;

  1865. 

  1866.         if(f->version == 2){

  1867.             fs->slice_x     = get_symbol(c, state, 0)   *f->width ;

  1868.             fs->slice_y     = get_symbol(c, state, 0)   *f->height;

  1869.             fs->slice_width =(get_symbol(c, state, 0)+1)*f->width  + fs->slice_x;

  1870.             fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;

  1871. 

  1872.             fs->slice_x /= f->num_h_slices;

  1873.             fs->slice_y /= f->num_v_slices;

  1874.             fs->slice_width  = fs->slice_width /f->num_h_slices - fs->slice_x;

  1875.             fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;

  1876.             if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)

  1877.                 return -1;

  1878.             if(    (unsigned)fs->slice_x + (uint64_t)fs->slice_width  > f->width

  1879.                 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)

  1880.                 return -1;

  1881.         }

  1882. 

  1883.         for(i=0; i<f->plane_count; i++){

  1884.             PlaneContext * const p= &fs->plane[i];

  1885. 

  1886.             if(f->version == 2){

  1887.                 int idx=get_symbol(c, state, 0);

  1888.                 if(idx > (unsigned)f->quant_table_count){

  1889.                     av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");

  1890.                     return -1;

  1891.                 }

  1892.                 p->quant_table_index= idx;

  1893.                 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));

  1894.                 context_count= f->context_count[idx];

  1895.             }else{

  1896.                 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));

  1897.             }

  1898. 

  1899.             if(f->version <= 2){

  1900.             if(p->context_count < context_count){

  1901.                 av_freep(&p->state);

  1902.                 av_freep(&p->vlc_state);

  1903.             }

  1904.             p->context_count= context_count;

  1905.             }

  1906.         }

  1907.     }

  1908.     return 0;

  1909. }

  1910. 

  1911. static av_cold int decode_init(AVCodecContext *avctx)

  1912. {

  1913.     FFV1Context *f = avctx->priv_data;

  1914. 

  1915.     common_init(avctx);

  1916. 

  1917.     if(avctx->extradata && read_extra_header(f) < 0)

  1918.         return -1;

  1919. 

  1920.     if(init_slice_contexts(f) < 0)

  1921.         return -1;

  1922. 

  1923.     return 0;

  1924. }

  1925. 

  1926. static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){

  1927.     const uint8_t *buf = avpkt->data;

  1928.     int buf_size = avpkt->size;

  1929.     FFV1Context *f = avctx->priv_data;

  1930.     RangeCoder * const c= &f->slice_context[0]->c;

  1931.     AVFrame * const p= &f->picture;

  1932.     int bytes_read, i;

  1933.     uint8_t keystate= 128;

  1934.     const uint8_t *buf_p;

  1935. 

  1936.     AVFrame *picture = data;

  1937. 

  1938.     /* release previously stored data */

  1939.     if (p->data[0])

  1940.         avctx->release_buffer(avctx, p);

  1941. 

  1942.     ff_init_range_decoder(c, buf, buf_size);

  1943.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1944. 

  1945. 

  1946.     p->pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P

  1947.     if(get_rac(c, &keystate)){

  1948.         p->key_frame= 1;

  1949.         f->key_frame_ok = 0;

  1950.         if(read_header(f) < 0)

  1951.             return -1;

  1952.         if(init_slices_state(f) < 0)

  1953.             return -1;

  1954.         f->key_frame_ok = 1;

  1955.     }else{

  1956.         if (!f->key_frame_ok) {

  1957.             av_log(avctx, AV_LOG_ERROR, "Cant decode non keyframe without valid keyframe\n");

  1958.             return AVERROR_INVALIDDATA;

  1959.         }

  1960.         p->key_frame= 0;

  1961.     }

  1962.     if(f->ac>1){

  1963.         int i;

  1964.         for(i=1; i<256; i++){

  1965.             c->one_state[i]= f->state_transition[i];

  1966.             c->zero_state[256-i]= 256-c->one_state[i];

  1967.         }

  1968.     }

  1969. 

  1970.     p->reference= 0;

  1971.     if(avctx->get_buffer(avctx, p) < 0){

  1972.         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  1973.         return -1;

  1974.     }

  1975. 

  1976.     if(avctx->debug&FF_DEBUG_PICT_INFO)

  1977.         av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);

  1978. 

  1979.     buf_p= buf + buf_size;

  1980.     for(i=f->slice_count-1; i>=0; i--){

  1981.         FFV1Context *fs= f->slice_context[i];

  1982.         int trailer = 3 + 4*!!f->ec;

  1983.         int v;

  1984. 

  1985.         if(i) v = AV_RB24(buf_p-trailer)+trailer;

  1986.         else  v = buf_p - c->bytestream_start;

  1987.         if(buf_p - c->bytestream_start < v){

  1988.             av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");

  1989.             return -1;

  1990.         }

  1991.         buf_p -= v;

  1992. 

  1993.         if(f->ec){

  1994.             unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);

  1995.             if(crc){

  1996.                 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", crc);

  1997.             }

  1998.         }

  1999. 

  2000.         if(i){

  2001.             if(fs->ac){

  2002.                 ff_init_range_decoder(&fs->c, buf_p, v);

  2003.             }else{

  2004.                 init_get_bits(&fs->gb, buf_p, v * 8);

  2005.             }

  2006.         }else{

  2007.             if(!f->ac){

  2008.                 bytes_read = c->bytestream - c->bytestream_start - 1;

  2009.                 if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME

  2010.                 init_get_bits(&fs->gb, buf + bytes_read, (buf_size - bytes_read) * 8);

  2011.             }

  2012.         }

  2013.     }

  2014. 

  2015.     avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));

  2016.     f->picture_number++;

  2017. 

  2018.     *picture= *p;

  2019.     *data_size = sizeof(AVFrame);

  2020. 

  2021.     return buf_size;

  2022. }

  2023. 

  2024. AVCodec ff_ffv1_decoder = {

  2025.     .name           = "ffv1",

  2026.     .type           = AVMEDIA_TYPE_VIDEO,

  2027.     .id             = CODEC_ID_FFV1,

  2028.     .priv_data_size = sizeof(FFV1Context),

  2029.     .init           = decode_init,

  2030.     .close          = common_end,

  2031.     .decode         = decode_frame,

  2032.     .capabilities   = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |

  2033.                       CODEC_CAP_SLICE_THREADS,

  2034.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  2035. };

  2036. 

  2037. #if CONFIG_FFV1_ENCODER

  2038. AVCodec ff_ffv1_encoder = {

  2039.     .name           = "ffv1",

  2040.     .type           = AVMEDIA_TYPE_VIDEO,

  2041.     .id             = CODEC_ID_FFV1,

  2042.     .priv_data_size = sizeof(FFV1Context),

  2043.     .init           = encode_init,

  2044.     .encode2        = encode_frame,

  2045.     .close          = common_end,

  2046.     .capabilities   = CODEC_CAP_SLICE_THREADS,

  2047.     .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},

  2048.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  2049. };

  2050. #endif