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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. 

  197.     int quant_table_count;

  198. 

  199.     DSPContext dsp;

  200. 

  201.     struct FFV1Context *slice_context[MAX_SLICES];

  202.     int slice_count;

  203.     int num_v_slices;

  204.     int num_h_slices;

  205.     int slice_width;

  206.     int slice_height;

  207.     int slice_x;

  208.     int slice_y;

  209.     int bits_per_raw_sample;

  210. }FFV1Context;

  211. 

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

  213.     if(bits==8)

  214.         diff= (int8_t)diff;

  215.     else{

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

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

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

  219.     }

  220. 

  221.     return diff;

  222. }

  223. 

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

  225. {

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

  227.     const int  T= last[ 0];

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

  229. 

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

  231. }

  232. 

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

  234.                               int16_t *last, int16_t *last2)

  235. {

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

  237.     const int  T= last[ 0];

  238.     const int RT= last[ 1];

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

  240. 

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

  242.         const int TT= last2[0];

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

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

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

  246.     }else

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

  248. }

  249. 

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

  251.     int i,j,k,m;

  252.     double l2tab[256];

  253. 

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

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

  256. 

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

  258.         double best_len[256];

  259.         double p= i/256.0;

  260. 

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

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

  263. 

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

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

  266.             double len=0;

  267.             occ[j]=1.0;

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

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

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

  271.                     if(occ[m]){

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

  273.                                       + (1-p)*l2tab[256-m]);

  274.                     }

  275.                 }

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

  277.                     best_len[k]= len;

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

  279.                 }

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

  281.                     if(occ[m]){

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

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

  284.                     }

  285.                 }

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

  287.             }

  288.         }

  289.     }

  290. }

  291. 

  292. 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]){

  293.     int i;

  294. 

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

  296. do{\

  297.     if(rc_stat){\

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

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

  300.     }\

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

  302. }while(0)

  303. 

  304.     if(v){

  305.         const int a= FFABS(v);

  306.         const int e= av_log2(a);

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

  308.         if(e<=9){

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

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

  311.             }

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

  313. 

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

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

  316.             }

  317. 

  318.             if(is_signed)

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

  320.         }else{

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

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

  323.             }

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

  325. 

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

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

  328.             }

  329. 

  330.             if(is_signed)

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

  332.         }

  333.     }else{

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

  335.     }

  336. #undef put_rac

  337. }

  338. 

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

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

  341. }

  342. 

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

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

  345.         return 0;

  346.     else{

  347.         int i, e, a;

  348.         e= 0;

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

  350.             e++;

  351.         }

  352. 

  353.         a= 1;

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

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

  356.         }

  357. 

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

  359.         return (a^e)-e;

  360.     }

  361. }

  362. 

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

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

  365. }

  366. 

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

  368.     int drift= state->drift;

  369.     int count= state->count;

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

  371.     drift += v;

  372. 

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

  374.         count >>= 1;

  375.         drift >>= 1;

  376.         state->error_sum >>= 1;

  377.     }

  378.     count++;

  379. 

  380.     if(drift <= -count){

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

  382. 

  383.         drift += count;

  384.         if(drift <= -count)

  385.             drift= -count + 1;

  386.     }else if(drift > 0){

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

  388. 

  389.         drift -= count;

  390.         if(drift > 0)

  391.             drift= 0;

  392.     }

  393. 

  394.     state->drift= drift;

  395.     state->count= count;

  396. }

  397. 

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

  399.     int i, k, code;

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

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

  402. 

  403.     i= state->count;

  404.     k=0;

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

  406.         k++;

  407.         i += i;

  408.     }

  409. 

  410.     assert(k<=8);

  411. 

  412. #if 0 // JPEG LS

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

  414.     else                                         code= v;

  415. #else

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

  417. #endif

  418. 

  419. //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);

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

  421. 

  422.     update_vlc_state(state, v);

  423. }

  424. 

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

  426.     int k, i, v, ret;

  427. 

  428.     i= state->count;

  429.     k=0;

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

  431.         k++;

  432.         i += i;

  433.     }

  434. 

  435.     assert(k<=8);

  436. 

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

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

  439. 

  440. #if 0 // JPEG LS

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

  442. #else

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

  444. #endif

  445. 

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

  447. 

  448.     update_vlc_state(state, v);

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

  450.     return ret;

  451. }

  452. 

  453. #if CONFIG_FFV1_ENCODER

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

  455.                                         int16_t *sample[3],

  456.                                         int plane_index, int bits)

  457. {

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

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

  460.     int x;

  461.     int run_index= s->run_index;

  462.     int run_count=0;

  463.     int run_mode=0;

  464. 

  465.     if(s->ac){

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

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

  468.             return -1;

  469.         }

  470.     }else{

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

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

  473.             return -1;

  474.         }

  475.     }

  476. 

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

  478.         int diff, context;

  479. 

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

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

  482. 

  483.         if(context < 0){

  484.             context = -context;

  485.             diff= -diff;

  486.         }

  487. 

  488.         diff= fold(diff, bits);

  489. 

  490.         if(s->ac){

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

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

  493.             }else{

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

  495.             }

  496.         }else{

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

  498. 

  499.             if(run_mode){

  500. 

  501.                 if(diff){

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

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

  504.                         run_index++;

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

  506.                     }

  507. 

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

  509.                     if(run_index) run_index--;

  510.                     run_count=0;

  511.                     run_mode=0;

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

  513.                 }else{

  514.                     run_count++;

  515.                 }

  516.             }

  517. 

  518. //            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));

  519. 

  520.             if(run_mode == 0)

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

  522.         }

  523.     }

  524.     if(run_mode){

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

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

  527.             run_index++;

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

  529.         }

  530. 

  531.         if(run_count)

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

  533.     }

  534.     s->run_index= run_index;

  535. 

  536.     return 0;

  537. }

  538. 

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

  540.     int x,y,i;

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

  542.     int16_t *sample[3];

  543.     s->run_index=0;

  544. 

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

  546. 

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

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

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

  550. 

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

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

  553. //{START_TIMER

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

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

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

  557.             }

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

  559.         }else{

  560.             if(s->packed_at_lsb){

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

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

  563.                 }

  564.             }else{

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

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

  567.                 }

  568.             }

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

  570.         }

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

  572.     }

  573. }

  574. 

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

  576.     int x, y, p, i;

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

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

  579.     s->run_index=0;

  580. 

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

  582. 

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

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

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

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

  587. 

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

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

  590.             int b= v&0xFF;

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

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

  593.             int a=  v>>24;

  594. 

  595.             b -= g;

  596.             r -= g;

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

  598.             b += 0x100;

  599.             r += 0x100;

  600. 

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

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

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

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

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

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

  607.         }

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

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

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

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

  612.         }

  613.     }

  614. }

  615. 

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

  617.     int last=0;

  618.     int i;

  619.     uint8_t state[CONTEXT_SIZE];

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

  621. 

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

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

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

  625.             last= i;

  626.         }

  627.     }

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

  629. }

  630. 

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

  632.     int i;

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

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

  635. }

  636. 

  637. static void write_header(FFV1Context *f){

  638.     uint8_t state[CONTEXT_SIZE];

  639.     int i, j;

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

  641. 

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

  643. 

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

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

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

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

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

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

  650.             }

  651.         }

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

  653.         if(f->version>0)

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

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

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

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

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

  659. 

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

  661.     }else{

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

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

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

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

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

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

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

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

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

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

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

  673.             }

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

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

  906.         return -1;

  907.     }

  908. 

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

  910. 

  911.     if(s->ac>1)

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

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

  914. 

  915.     s->plane_count=3;

  916.     switch(avctx->pix_fmt){

  917.     case PIX_FMT_YUV444P9:

  918.     case PIX_FMT_YUV422P9:

  919.     case PIX_FMT_YUV420P9:

  920.         if (!avctx->bits_per_raw_sample)

  921.             s->bits_per_raw_sample = 9;

  922.     case PIX_FMT_YUV444P10:

  923.     case PIX_FMT_YUV420P10:

  924.     case PIX_FMT_YUV422P10:

  925.         s->packed_at_lsb = 1;

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

  927.             s->bits_per_raw_sample = 10;

  928.     case PIX_FMT_GRAY16:

  929.     case PIX_FMT_YUV444P16:

  930.     case PIX_FMT_YUV422P16:

  931.     case PIX_FMT_YUV420P16:

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

  933.             s->bits_per_raw_sample = 16;

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

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

  936.         }

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

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

  939.             return -1;

  940.         }

  941.         if(!s->ac){

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

  943.             return -1;

  944.         }

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

  946.     case PIX_FMT_GRAY8:

  947.     case PIX_FMT_YUV444P:

  948.     case PIX_FMT_YUV440P:

  949.     case PIX_FMT_YUV422P:

  950.     case PIX_FMT_YUV420P:

  951.     case PIX_FMT_YUV411P:

  952.     case PIX_FMT_YUV410P:

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

  954.         s->colorspace= 0;

  955.         break;

  956.     case PIX_FMT_YUVA444P:

  957.     case PIX_FMT_YUVA420P:

  958.         s->chroma_planes= 1;

  959.         s->colorspace= 0;

  960.         s->transparency= 1;

  961.         break;

  962.     case PIX_FMT_RGB32:

  963.         s->colorspace= 1;

  964.         s->transparency= 1;

  965.         break;

  966.     case PIX_FMT_0RGB32:

  967.         s->colorspace= 1;

  968.         break;

  969.     default:

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

  971.         return -1;

  972.     }

  973.     if (s->transparency) {

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

  975.     }

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

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

  978.         return AVERROR(EINVAL);

  979.     }

  980. 

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

  982.         s->quant_table_count=2;

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

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

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

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

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

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

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

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

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

  992.         }else{

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

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

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

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

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

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

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

  1000.             s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];

  1001.         }

  1002.     }

  1003.     s->context_count[0]= (11*11*11+1)/2;

  1004.     s->context_count[1]= (11*11*5*5*5+1)/2;

  1005.     memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table));

  1006. 

  1007.     for(i=0; i<s->plane_count; i++){

  1008.         PlaneContext * const p= &s->plane[i];

  1009. 

  1010.         memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));

  1011.         p->quant_table_index= avctx->context_model;

  1012.         p->context_count= s->context_count[p->quant_table_index];

  1013.     }

  1014. 

  1015.     if(allocate_initial_states(s) < 0)

  1016.         return AVERROR(ENOMEM);

  1017. 

  1018.     avctx->coded_frame= &s->picture;

  1019.     if(!s->transparency)

  1020.         s->plane_count= 2;

  1021.     avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);

  1022. 

  1023.     s->picture_number=0;

  1024. 

  1025.     if(avctx->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)){

  1026.         for(i=0; i<s->quant_table_count; i++){

  1027.             s->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*s->rc_stat2[i]));

  1028.             if(!s->rc_stat2[i])

  1029.                 return AVERROR(ENOMEM);

  1030.         }

  1031.     }

  1032.     if(avctx->stats_in){

  1033.         char *p= avctx->stats_in;

  1034.         uint8_t best_state[256][256];

  1035.         int gob_count=0;

  1036.         char *next;

  1037. 

  1038.         av_assert0(s->version>=2);

  1039. 

  1040.         for(;;){

  1041.             for(j=0; j<256; j++){

  1042.                 for(i=0; i<2; i++){

  1043.                     s->rc_stat[j][i]= strtol(p, &next, 0);

  1044.                     if(next==p){

  1045.                         av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d [%s]\n", j,i,p);

  1046.                         return -1;

  1047.                     }

  1048.                     p=next;

  1049.                 }

  1050.             }

  1051.             for(i=0; i<s->quant_table_count; i++){

  1052.                 for(j=0; j<s->context_count[i]; j++){

  1053.                     for(k=0; k<32; k++){

  1054.                         for(m=0; m<2; m++){

  1055.                             s->rc_stat2[i][j][k][m]= strtol(p, &next, 0);

  1056.                             if(next==p){

  1057.                                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid at %d %d %d %d [%s]\n", i,j,k,m,p);

  1058.                                 return -1;

  1059.                             }

  1060.                             p=next;

  1061.                         }

  1062.                     }

  1063.                 }

  1064.             }

  1065.             gob_count= strtol(p, &next, 0);

  1066.             if(next==p || gob_count <0){

  1067.                 av_log(avctx, AV_LOG_ERROR, "2Pass file invalid\n");

  1068.                 return -1;

  1069.             }

  1070.             p=next;

  1071.             while(*p=='\n' || *p==' ') p++;

  1072.             if(p[0]==0) break;

  1073.         }

  1074.         sort_stt(s, s->state_transition);

  1075. 

  1076.         find_best_state(best_state, s->state_transition);

  1077. 

  1078.         for(i=0; i<s->quant_table_count; i++){

  1079.             for(j=0; j<s->context_count[i]; j++){

  1080.                 for(k=0; k<32; k++){

  1081.                     double p= 128;

  1082.                     if(s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]){

  1083.                         p=256.0*s->rc_stat2[i][j][k][1] / (s->rc_stat2[i][j][k][0]+s->rc_stat2[i][j][k][1]);

  1084.                     }

  1085.                     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)];

  1086.                 }

  1087.             }

  1088.         }

  1089.     }

  1090. 

  1091.     if(s->version>1){

  1092.         for(s->num_v_slices=2; s->num_v_slices<9; s->num_v_slices++){

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

  1094.                 if(avctx->slices == s->num_h_slices * s->num_v_slices && avctx->slices <= 64)

  1095.                     goto slices_ok;

  1096.             }

  1097.         }

  1098.         av_log(avctx, AV_LOG_ERROR, "Unsupported number %d of slices requested\n", avctx->slices);

  1099.         return -1;

  1100.         slices_ok:

  1101.         write_extra_header(s);

  1102.     }

  1103. 

  1104.     if(init_slice_contexts(s) < 0)

  1105.         return -1;

  1106.     if(init_slices_state(s) < 0)

  1107.         return -1;

  1108. 

  1109. #define STATS_OUT_SIZE 1024*1024*6

  1110.     if(avctx->flags & CODEC_FLAG_PASS1){

  1111.         avctx->stats_out= av_mallocz(STATS_OUT_SIZE);

  1112.         for(i=0; i<s->quant_table_count; i++){

  1113.             for(j=0; j<s->slice_count; j++){

  1114.                 FFV1Context *sf= s->slice_context[j];

  1115.                 av_assert0(!sf->rc_stat2[i]);

  1116.                 sf->rc_stat2[i]= av_mallocz(s->context_count[i]*sizeof(*sf->rc_stat2[i]));

  1117.                 if(!sf->rc_stat2[i])

  1118.                     return AVERROR(ENOMEM);

  1119.             }

  1120.         }

  1121.     }

  1122. 

  1123.     return 0;

  1124. }

  1125. #endif /* CONFIG_FFV1_ENCODER */

  1126. 

  1127. 

  1128. static void clear_slice_state(FFV1Context *f, FFV1Context *fs){

  1129.     int i, j;

  1130. 

  1131.         for(i=0; i<f->plane_count; i++){

  1132.             PlaneContext *p= &fs->plane[i];

  1133. 

  1134.             p->interlace_bit_state[0]= 128;

  1135.             p->interlace_bit_state[1]= 128;

  1136. 

  1137.             if(fs->ac){

  1138.                 if(f->initial_states[p->quant_table_index]){

  1139.                     memcpy(p->state, f->initial_states[p->quant_table_index], CONTEXT_SIZE*p->context_count);

  1140.                 }else

  1141.                 memset(p->state, 128, CONTEXT_SIZE*p->context_count);

  1142.             }else{

  1143.                 for(j=0; j<p->context_count; j++){

  1144.                     p->vlc_state[j].drift= 0;

  1145.                     p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2);

  1146.                     p->vlc_state[j].bias= 0;

  1147.                     p->vlc_state[j].count= 1;

  1148.                 }

  1149.             }

  1150.         }

  1151. }

  1152. 

  1153. static void clear_state(FFV1Context *f){

  1154.     int si;

  1155. 

  1156.     for(si=0; si<f->slice_count; si++){

  1157.         FFV1Context *fs= f->slice_context[si];

  1158.         clear_slice_state(f, fs);

  1159.     }

  1160. }

  1161. 

  1162. #if CONFIG_FFV1_ENCODER

  1163. 

  1164. static void encode_slice_header(FFV1Context *f, FFV1Context *fs){

  1165.     RangeCoder *c = &fs->c;

  1166.     uint8_t state[CONTEXT_SIZE];

  1167.     int j;

  1168.     memset(state, 128, sizeof(state));

  1169. 

  1170.     put_symbol(c, state, (fs->slice_x     +1)*f->num_h_slices / f->width   , 0);

  1171.     put_symbol(c, state, (fs->slice_y     +1)*f->num_v_slices / f->height  , 0);

  1172.     put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);

  1173.     put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);

  1174.     for(j=0; j<f->plane_count; j++){

  1175.         put_symbol(c, state, f->plane[j].quant_table_index, 0);

  1176.         av_assert0(f->plane[j].quant_table_index == f->avctx->context_model);

  1177.     }

  1178.     if(!f->picture.interlaced_frame) put_symbol(c, state, 3, 0);

  1179.     else                             put_symbol(c, state, 1 + !f->picture.top_field_first, 0);

  1180.     put_symbol(c, state, f->picture.sample_aspect_ratio.num, 0);

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

  1182. }

  1183. 

  1184. static int encode_slice(AVCodecContext *c, void *arg){

  1185.     FFV1Context *fs= *(void**)arg;

  1186.     FFV1Context *f= fs->avctx->priv_data;

  1187.     int width = fs->slice_width;

  1188.     int height= fs->slice_height;

  1189.     int x= fs->slice_x;

  1190.     int y= fs->slice_y;

  1191.     AVFrame * const p= &f->picture;

  1192.     const int ps= (f->bits_per_raw_sample>8)+1;

  1193. 

  1194.     if(f->version > 2){

  1195.         encode_slice_header(f, fs);

  1196.     }

  1197. 

  1198.     if(f->colorspace==0){

  1199.         const int chroma_width = -((-width )>>f->chroma_h_shift);

  1200.         const int chroma_height= -((-height)>>f->chroma_v_shift);

  1201.         const int cx= x>>f->chroma_h_shift;

  1202.         const int cy= y>>f->chroma_v_shift;

  1203. 

  1204.         encode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);

  1205. 

  1206.         if (f->chroma_planes){

  1207.             encode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);

  1208.             encode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);

  1209.         }

  1210.         if (fs->transparency)

  1211.             encode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);

  1212.     }else{

  1213.         encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);

  1214.     }

  1215.     emms_c();

  1216. 

  1217.     return 0;

  1218. }

  1219. 

  1220. static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,

  1221.                         const AVFrame *pict, int *got_packet)

  1222. {

  1223.     FFV1Context *f = avctx->priv_data;

  1224.     RangeCoder * const c= &f->slice_context[0]->c;

  1225.     AVFrame * const p= &f->picture;

  1226.     int used_count= 0;

  1227.     uint8_t keystate=128;

  1228.     uint8_t *buf_p;

  1229.     int i, ret;

  1230. 

  1231.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*((8*2+1+1)*4)/8

  1232.                                   + FF_MIN_BUFFER_SIZE)) < 0)

  1233.         return ret;

  1234. 

  1235.     ff_init_range_encoder(c, pkt->data, pkt->size);

  1236.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1237. 

  1238.     *p = *pict;

  1239.     p->pict_type= AV_PICTURE_TYPE_I;

  1240. 

  1241.     if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){

  1242.         put_rac(c, &keystate, 1);

  1243.         p->key_frame= 1;

  1244.         f->gob_count++;

  1245.         write_header(f);

  1246.         clear_state(f);

  1247.     }else{

  1248.         put_rac(c, &keystate, 0);

  1249.         p->key_frame= 0;

  1250.     }

  1251. 

  1252.     if(!f->ac){

  1253.         used_count += ff_rac_terminate(c);

  1254. //printf("pos=%d\n", used_count);

  1255.         init_put_bits(&f->slice_context[0]->pb, pkt->data + used_count, pkt->size - used_count);

  1256.     }else if (f->ac>1){

  1257.         int i;

  1258.         for(i=1; i<256; i++){

  1259.             c->one_state[i]= f->state_transition[i];

  1260.             c->zero_state[256-i]= 256-c->one_state[i];

  1261.         }

  1262.     }

  1263. 

  1264.     for(i=1; i<f->slice_count; i++){

  1265.         FFV1Context *fs= f->slice_context[i];

  1266.         uint8_t *start = pkt->data + (pkt->size-used_count)*i/f->slice_count;

  1267.         int len = pkt->size/f->slice_count;

  1268. 

  1269.         if(fs->ac){

  1270.             ff_init_range_encoder(&fs->c, start, len);

  1271.         }else{

  1272.             init_put_bits(&fs->pb, start, len);

  1273.         }

  1274.     }

  1275.     avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));

  1276. 

  1277.     buf_p = pkt->data;

  1278.     for(i=0; i<f->slice_count; i++){

  1279.         FFV1Context *fs= f->slice_context[i];

  1280.         int bytes;

  1281. 

  1282.         if(fs->ac){

  1283.             uint8_t state=128;

  1284.             put_rac(&fs->c, &state, 0);

  1285.             bytes= ff_rac_terminate(&fs->c);

  1286.         }else{

  1287.             flush_put_bits(&fs->pb); //nicer padding FIXME

  1288.             bytes= used_count + (put_bits_count(&fs->pb)+7)/8;

  1289.             used_count= 0;

  1290.         }

  1291.         if(i>0){

  1292.             av_assert0(bytes < pkt->size/f->slice_count);

  1293.             memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes);

  1294.             av_assert0(bytes < (1<<24));

  1295.             AV_WB24(buf_p+bytes, bytes);

  1296.             bytes+=3;

  1297.         }

  1298.         if(f->ec){

  1299.             unsigned v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, bytes);

  1300.             AV_WL32(buf_p + bytes, v); bytes += 4;

  1301.         }

  1302.         buf_p += bytes;

  1303.     }

  1304. 

  1305.     if((avctx->flags&CODEC_FLAG_PASS1) && (f->picture_number&31)==0){

  1306.         int j, k, m;

  1307.         char *p= avctx->stats_out;

  1308.         char *end= p + STATS_OUT_SIZE;

  1309. 

  1310.         memset(f->rc_stat, 0, sizeof(f->rc_stat));

  1311.         for(i=0; i<f->quant_table_count; i++)

  1312.             memset(f->rc_stat2[i], 0, f->context_count[i]*sizeof(*f->rc_stat2[i]));

  1313. 

  1314.         for(j=0; j<f->slice_count; j++){

  1315.             FFV1Context *fs= f->slice_context[j];

  1316.             for(i=0; i<256; i++){

  1317.                 f->rc_stat[i][0] += fs->rc_stat[i][0];

  1318.                 f->rc_stat[i][1] += fs->rc_stat[i][1];

  1319.             }

  1320.             for(i=0; i<f->quant_table_count; i++){

  1321.                 for(k=0; k<f->context_count[i]; k++){

  1322.                     for(m=0; m<32; m++){

  1323.                         f->rc_stat2[i][k][m][0] += fs->rc_stat2[i][k][m][0];

  1324.                         f->rc_stat2[i][k][m][1] += fs->rc_stat2[i][k][m][1];

  1325.                     }

  1326.                 }

  1327.             }

  1328.         }

  1329. 

  1330.         for(j=0; j<256; j++){

  1331.             snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat[j][0], f->rc_stat[j][1]);

  1332.             p+= strlen(p);

  1333.         }

  1334.         snprintf(p, end-p, "\n");

  1335. 

  1336.         for(i=0; i<f->quant_table_count; i++){

  1337.             for(j=0; j<f->context_count[i]; j++){

  1338.                 for(m=0; m<32; m++){

  1339.                     snprintf(p, end-p, "%"PRIu64" %"PRIu64" ", f->rc_stat2[i][j][m][0], f->rc_stat2[i][j][m][1]);

  1340.                     p+= strlen(p);

  1341.                 }

  1342.             }

  1343.         }

  1344.         snprintf(p, end-p, "%d\n", f->gob_count);

  1345.     } else if(avctx->flags&CODEC_FLAG_PASS1)

  1346.         avctx->stats_out[0] = '\0';

  1347. 

  1348.     f->picture_number++;

  1349.     pkt->size   = buf_p - pkt->data;

  1350.     pkt->flags |= AV_PKT_FLAG_KEY*p->key_frame;

  1351.     *got_packet = 1;

  1352. 

  1353.     return 0;

  1354. }

  1355. #endif /* CONFIG_FFV1_ENCODER */

  1356. 

  1357. static av_cold int common_end(AVCodecContext *avctx){

  1358.     FFV1Context *s = avctx->priv_data;

  1359.     int i, j;

  1360. 

  1361.     if (avctx->codec->decode && s->picture.data[0])

  1362.         avctx->release_buffer(avctx, &s->picture);

  1363. 

  1364.     for(j=0; j<s->slice_count; j++){

  1365.         FFV1Context *fs= s->slice_context[j];

  1366.         for(i=0; i<s->plane_count; i++){

  1367.             PlaneContext *p= &fs->plane[i];

  1368. 

  1369.             av_freep(&p->state);

  1370.             av_freep(&p->vlc_state);

  1371.         }

  1372.         av_freep(&fs->sample_buffer);

  1373.     }

  1374. 

  1375.     av_freep(&avctx->stats_out);

  1376.     for(j=0; j<s->quant_table_count; j++){

  1377.         av_freep(&s->initial_states[j]);

  1378.         for(i=0; i<s->slice_count; i++){

  1379.             FFV1Context *sf= s->slice_context[i];

  1380.             av_freep(&sf->rc_stat2[j]);

  1381.         }

  1382.         av_freep(&s->rc_stat2[j]);

  1383.     }

  1384. 

  1385.     for(i=0; i<s->slice_count; i++){

  1386.         av_freep(&s->slice_context[i]);

  1387.     }

  1388. 

  1389.     return 0;

  1390. }

  1391. 

  1392. static av_always_inline void decode_line(FFV1Context *s, int w,

  1393.                                          int16_t *sample[2],

  1394.                                          int plane_index, int bits)

  1395. {

  1396.     PlaneContext * const p= &s->plane[plane_index];

  1397.     RangeCoder * const c= &s->c;

  1398.     int x;

  1399.     int run_count=0;

  1400.     int run_mode=0;

  1401.     int run_index= s->run_index;

  1402. 

  1403.     for(x=0; x<w; x++){

  1404.         int diff, context, sign;

  1405. 

  1406.         context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);

  1407.         if(context < 0){

  1408.             context= -context;

  1409.             sign=1;

  1410.         }else

  1411.             sign=0;

  1412. 

  1413.         av_assert2(context < p->context_count);

  1414. 

  1415.         if(s->ac){

  1416.             diff= get_symbol_inline(c, p->state[context], 1);

  1417.         }else{

  1418.             if(context == 0 && run_mode==0) run_mode=1;

  1419. 

  1420.             if(run_mode){

  1421.                 if(run_count==0 && run_mode==1){

  1422.                     if(get_bits1(&s->gb)){

  1423.                         run_count = 1<<ff_log2_run[run_index];

  1424.                         if(x + run_count <= w) run_index++;

  1425.                     }else{

  1426.                         if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);

  1427.                         else run_count=0;

  1428.                         if(run_index) run_index--;

  1429.                         run_mode=2;

  1430.                     }

  1431.                 }

  1432.                 run_count--;

  1433.                 if(run_count < 0){

  1434.                     run_mode=0;

  1435.                     run_count=0;

  1436.                     diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);

  1437.                     if(diff>=0) diff++;

  1438.                 }else

  1439.                     diff=0;

  1440.             }else

  1441.                 diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);

  1442. 

  1443. //            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));

  1444.         }

  1445. 

  1446.         if(sign) diff= -diff;

  1447. 

  1448.         sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);

  1449.     }

  1450.     s->run_index= run_index;

  1451. }

  1452. 

  1453. static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){

  1454.     int x, y;

  1455.     int16_t *sample[2];

  1456.     sample[0]=s->sample_buffer    +3;

  1457.     sample[1]=s->sample_buffer+w+6+3;

  1458. 

  1459.     s->run_index=0;

  1460. 

  1461.     memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer));

  1462. 

  1463.     for(y=0; y<h; y++){

  1464.         int16_t *temp = sample[0]; //FIXME try a normal buffer

  1465. 

  1466.         sample[0]= sample[1];

  1467.         sample[1]= temp;

  1468. 

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

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

  1471. 

  1472. //{START_TIMER

  1473.         if(s->avctx->bits_per_raw_sample <= 8){

  1474.             decode_line(s, w, sample, plane_index, 8);

  1475.             for(x=0; x<w; x++){

  1476.                 src[x + stride*y]= sample[1][x];

  1477.             }

  1478.         }else{

  1479.             decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);

  1480.             if(s->packed_at_lsb){

  1481.                 for(x=0; x<w; x++){

  1482.                     ((uint16_t*)(src + stride*y))[x]= sample[1][x];

  1483.                 }

  1484.             }else{

  1485.                 for(x=0; x<w; x++){

  1486.                     ((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample);

  1487.                 }

  1488.             }

  1489.         }

  1490. //STOP_TIMER("decode-line")}

  1491.     }

  1492. }

  1493. 

  1494. static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){

  1495.     int x, y, p;

  1496.     int16_t *sample[4][2];

  1497.     for(x=0; x<4; x++){

  1498.         sample[x][0] = s->sample_buffer +  x*2   *(w+6) + 3;

  1499.         sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3;

  1500.     }

  1501. 

  1502.     s->run_index=0;

  1503. 

  1504.     memset(s->sample_buffer, 0, 8*(w+6)*sizeof(*s->sample_buffer));

  1505. 

  1506.     for(y=0; y<h; y++){

  1507.         for(p=0; p<3 + s->transparency; p++){

  1508.             int16_t *temp = sample[p][0]; //FIXME try a normal buffer

  1509. 

  1510.             sample[p][0]= sample[p][1];

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

  1512. 

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

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

  1515.             decode_line(s, w, sample[p], (p+1)/2, 9);

  1516.         }

  1517.         for(x=0; x<w; x++){

  1518.             int g= sample[0][1][x];

  1519.             int b= sample[1][1][x];

  1520.             int r= sample[2][1][x];

  1521.             int a= sample[3][1][x];

  1522. 

  1523. //            assert(g>=0 && b>=0 && r>=0);

  1524. //            assert(g<256 && b<512 && r<512);

  1525. 

  1526.             b -= 0x100;

  1527.             r -= 0x100;

  1528.             g -= (b + r)>>2;

  1529.             b += g;

  1530.             r += g;

  1531. 

  1532.             src[x + stride*y]= b + (g<<8) + (r<<16) + (a<<24);

  1533.         }

  1534.     }

  1535. }

  1536. 

  1537. static int decode_slice_header(FFV1Context *f, FFV1Context *fs){

  1538.     RangeCoder *c = &fs->c;

  1539.     uint8_t state[CONTEXT_SIZE];

  1540.     unsigned ps, i, context_count;

  1541.     memset(state, 128, sizeof(state));

  1542. 

  1543.     av_assert0(f->version > 2);

  1544. 

  1545.     fs->slice_x     = get_symbol(c, state, 0)   *f->width ;

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

  1547.     fs->slice_width =(get_symbol(c, state, 0)+1)*f->width  + fs->slice_x;

  1548.     fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;

  1549. 

  1550.     fs->slice_x /= f->num_h_slices;

  1551.     fs->slice_y /= f->num_v_slices;

  1552.     fs->slice_width  = fs->slice_width /f->num_h_slices - fs->slice_x;

  1553.     fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;

  1554.     if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)

  1555.         return -1;

  1556.     if(    (unsigned)fs->slice_x + (uint64_t)fs->slice_width  > f->width

  1557.         || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)

  1558.         return -1;

  1559. 

  1560.     for(i=0; i<f->plane_count; i++){

  1561.         PlaneContext * const p= &fs->plane[i];

  1562.         int idx=get_symbol(c, state, 0);

  1563.         if(idx > (unsigned)f->quant_table_count){

  1564.             av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");

  1565.             return -1;

  1566.         }

  1567.         p->quant_table_index= idx;

  1568.         memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));

  1569.         context_count= f->context_count[idx];

  1570. 

  1571.         if(p->context_count < context_count){

  1572.             av_freep(&p->state);

  1573.             av_freep(&p->vlc_state);

  1574.         }

  1575.         p->context_count= context_count;

  1576.     }

  1577. 

  1578.     ps = get_symbol(c, state, 0);

  1579.     if(ps==1){

  1580.         f->picture.interlaced_frame = 1;

  1581.         f->picture.top_field_first  = 1;

  1582.     } else if(ps==2){

  1583.         f->picture.interlaced_frame = 1;

  1584.         f->picture.top_field_first  = 0;

  1585.     } else if(ps==3){

  1586.         f->picture.interlaced_frame = 0;

  1587.     }

  1588.     f->picture.sample_aspect_ratio.num = get_symbol(c, state, 0);

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

  1590. 

  1591.     return 0;

  1592. }

  1593. 

  1594. static int decode_slice(AVCodecContext *c, void *arg){

  1595.     FFV1Context *fs= *(void**)arg;

  1596.     FFV1Context *f= fs->avctx->priv_data;

  1597.     int width, height, x, y;

  1598.     const int ps= (c->bits_per_raw_sample>8)+1;

  1599.     AVFrame * const p= &f->picture;

  1600. 

  1601.     if(f->version > 2){

  1602.         if(decode_slice_header(f, fs) < 0)

  1603.             return AVERROR_INVALIDDATA;

  1604. 

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

  1606.             return AVERROR(ENOMEM);

  1607.     }

  1608.     if(f->picture.key_frame)

  1609.         clear_slice_state(f, fs);

  1610.     width = fs->slice_width;

  1611.     height= fs->slice_height;

  1612.     x= fs->slice_x;

  1613.     y= fs->slice_y;

  1614. 

  1615.     av_assert1(width && height);

  1616.     if(f->colorspace==0){

  1617.         const int chroma_width = -((-width )>>f->chroma_h_shift);

  1618.         const int chroma_height= -((-height)>>f->chroma_v_shift);

  1619.         const int cx= x>>f->chroma_h_shift;

  1620.         const int cy= y>>f->chroma_v_shift;

  1621.         decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);

  1622. 

  1623.         if (f->chroma_planes){

  1624.             decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);

  1625.             decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);

  1626.         }

  1627.         if (fs->transparency)

  1628.             decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2);

  1629.     }else{

  1630.         decode_rgb_frame(fs, (uint32_t*)p->data[0] + ps*x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);

  1631.     }

  1632. 

  1633.     emms_c();

  1634. 

  1635.     return 0;

  1636. }

  1637. 

  1638. static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){

  1639.     int v;

  1640.     int i=0;

  1641.     uint8_t state[CONTEXT_SIZE];

  1642. 

  1643.     memset(state, 128, sizeof(state));

  1644. 

  1645.     for(v=0; i<128 ; v++){

  1646.         int len= get_symbol(c, state, 0) + 1;

  1647. 

  1648.         if(len + i > 128) return -1;

  1649. 

  1650.         while(len--){

  1651.             quant_table[i] = scale*v;

  1652.             i++;

  1653. //printf("%2d ",v);

  1654. //if(i%16==0) printf("\n");

  1655.         }

  1656.     }

  1657. 

  1658.     for(i=1; i<128; i++){

  1659.         quant_table[256-i]= -quant_table[i];

  1660.     }

  1661.     quant_table[128]= -quant_table[127];

  1662. 

  1663.     return 2*v - 1;

  1664. }

  1665. 

  1666. static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){

  1667.     int i;

  1668.     int context_count=1;

  1669. 

  1670.     for(i=0; i<5; i++){

  1671.         context_count*= read_quant_table(c, quant_table[i], context_count);

  1672.         if(context_count > 32768U){

  1673.             return -1;

  1674.         }

  1675.     }

  1676.     return (context_count+1)/2;

  1677. }

  1678. 

  1679. static int read_extra_header(FFV1Context *f){

  1680.     RangeCoder * const c= &f->c;

  1681.     uint8_t state[CONTEXT_SIZE];

  1682.     int i, j, k;

  1683.     uint8_t state2[32][CONTEXT_SIZE];

  1684. 

  1685.     memset(state2, 128, sizeof(state2));

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

  1687. 

  1688.     ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);

  1689.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1690. 

  1691.     f->version= get_symbol(c, state, 0);

  1692.     if(f->version > 2)

  1693.         f->minor_version= get_symbol(c, state, 0);

  1694.     f->ac= f->avctx->coder_type= get_symbol(c, state, 0);

  1695.     if(f->ac>1){

  1696.         for(i=1; i<256; i++){

  1697.             f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];

  1698.         }

  1699.     }

  1700.     f->colorspace= get_symbol(c, state, 0); //YUV cs type

  1701.     f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);

  1702.     f->chroma_planes= get_rac(c, state);

  1703.     f->chroma_h_shift= get_symbol(c, state, 0);

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

  1705.     f->transparency= get_rac(c, state);

  1706.     f->plane_count= 2 + f->transparency;

  1707.     f->num_h_slices= 1 + get_symbol(c, state, 0);

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

  1709.     if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){

  1710.         av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");

  1711.         return -1;

  1712.     }

  1713. 

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

  1715.     if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES)

  1716.         return -1;

  1717.     for(i=0; i<f->quant_table_count; i++){

  1718.         if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){

  1719.             av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");

  1720.             return -1;

  1721.         }

  1722.     }

  1723. 

  1724.     if(allocate_initial_states(f) < 0)

  1725.         return AVERROR(ENOMEM);

  1726. 

  1727.     for(i=0; i<f->quant_table_count; i++){

  1728.         if(get_rac(c, state)){

  1729.             for(j=0; j<f->context_count[i]; j++){

  1730.                 for(k=0; k<CONTEXT_SIZE; k++){

  1731.                     int pred= j ? f->initial_states[i][j-1][k] : 128;

  1732.                     f->initial_states[i][j][k]= (pred+get_symbol(c, state2[k], 1))&0xFF;

  1733.                 }

  1734.             }

  1735.         }

  1736.     }

  1737. 

  1738.     if(f->version > 2){

  1739.         f->ec = get_symbol(c, state, 0);

  1740.     }

  1741. 

  1742.     if(f->version > 2){

  1743.         unsigned v;

  1744.         v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, f->avctx->extradata, f->avctx->extradata_size);

  1745.         if(v){

  1746.             av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);

  1747.             return AVERROR_INVALIDDATA;

  1748.         }

  1749.     }

  1750. 

  1751.     return 0;

  1752. }

  1753. 

  1754. static int read_header(FFV1Context *f){

  1755.     uint8_t state[CONTEXT_SIZE];

  1756.     int i, j, context_count;

  1757.     RangeCoder * const c= &f->slice_context[0]->c;

  1758. 

  1759.     memset(state, 128, sizeof(state));

  1760. 

  1761.     if(f->version < 2){

  1762.         f->version= get_symbol(c, state, 0);

  1763.         f->ac= f->avctx->coder_type= get_symbol(c, state, 0);

  1764.         if(f->ac>1){

  1765.             for(i=1; i<256; i++){

  1766.                 f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];

  1767.             }

  1768.         }

  1769.         f->colorspace= get_symbol(c, state, 0); //YUV cs type

  1770.         if(f->version>0)

  1771.             f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);

  1772.         f->chroma_planes= get_rac(c, state);

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

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

  1775.         f->transparency= get_rac(c, state);

  1776.         f->plane_count= 2 + f->transparency;

  1777.     }

  1778. 

  1779.     if(f->colorspace==0){

  1780.         if(!f->transparency && !f->chroma_planes){

  1781.             if (f->avctx->bits_per_raw_sample<=8)

  1782.                 f->avctx->pix_fmt= PIX_FMT_GRAY8;

  1783.             else

  1784.                 f->avctx->pix_fmt= PIX_FMT_GRAY16;

  1785.         }else if(f->avctx->bits_per_raw_sample<=8 && !f->transparency){

  1786.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1787.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;

  1788.             case 0x01: f->avctx->pix_fmt= PIX_FMT_YUV440P; break;

  1789.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;

  1790.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;

  1791.             case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;

  1792.             case 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;

  1793.             default:

  1794.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1795.                 return -1;

  1796.             }

  1797.         }else if(f->avctx->bits_per_raw_sample<=8 && f->transparency){

  1798.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1799.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUVA444P; break;

  1800.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUVA420P; break;

  1801.             default:

  1802.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1803.                 return -1;

  1804.             }

  1805.         }else if(f->avctx->bits_per_raw_sample==9) {

  1806.             f->packed_at_lsb=1;

  1807.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1808.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P9; break;

  1809.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P9; break;

  1810.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P9; break;

  1811.             default:

  1812.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1813.                 return -1;

  1814.             }

  1815.         }else if(f->avctx->bits_per_raw_sample==10) {

  1816.             f->packed_at_lsb=1;

  1817.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1818.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P10; break;

  1819.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P10; break;

  1820.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P10; break;

  1821.             default:

  1822.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1823.                 return -1;

  1824.             }

  1825.         }else {

  1826.             switch(16*f->chroma_h_shift + f->chroma_v_shift){

  1827.             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;

  1828.             case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;

  1829.             case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break;

  1830.             default:

  1831.                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");

  1832.                 return -1;

  1833.             }

  1834.         }

  1835.     }else if(f->colorspace==1){

  1836.         if(f->chroma_h_shift || f->chroma_v_shift){

  1837.             av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");

  1838.             return -1;

  1839.         }

  1840.         if(f->transparency) f->avctx->pix_fmt= PIX_FMT_RGB32;

  1841.         else                f->avctx->pix_fmt= PIX_FMT_0RGB32;

  1842.     }else{

  1843.         av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");

  1844.         return -1;

  1845.     }

  1846. 

  1847. //printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);

  1848.     if(f->version < 2){

  1849.         context_count= read_quant_tables(c, f->quant_table);

  1850.         if(context_count < 0){

  1851.                 av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");

  1852.                 return -1;

  1853.         }

  1854.     }else{

  1855.         f->slice_count= get_symbol(c, state, 0);

  1856.         if(f->slice_count > (unsigned)MAX_SLICES)

  1857.             return -1;

  1858.     }

  1859. 

  1860.     for(j=0; j<f->slice_count; j++){

  1861.         FFV1Context *fs= f->slice_context[j];

  1862.         fs->ac= f->ac;

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

  1864. 

  1865.         if(f->version == 2){

  1866.             fs->slice_x     = get_symbol(c, state, 0)   *f->width ;

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

  1868.             fs->slice_width =(get_symbol(c, state, 0)+1)*f->width  + fs->slice_x;

  1869.             fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;

  1870. 

  1871.             fs->slice_x /= f->num_h_slices;

  1872.             fs->slice_y /= f->num_v_slices;

  1873.             fs->slice_width  = fs->slice_width /f->num_h_slices - fs->slice_x;

  1874.             fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;

  1875.             if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)

  1876.                 return -1;

  1877.             if(    (unsigned)fs->slice_x + (uint64_t)fs->slice_width  > f->width

  1878.                 || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)

  1879.                 return -1;

  1880.         }

  1881. 

  1882.         for(i=0; i<f->plane_count; i++){

  1883.             PlaneContext * const p= &fs->plane[i];

  1884. 

  1885.             if(f->version == 2){

  1886.                 int idx=get_symbol(c, state, 0);

  1887.                 if(idx > (unsigned)f->quant_table_count){

  1888.                     av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");

  1889.                     return -1;

  1890.                 }

  1891.                 p->quant_table_index= idx;

  1892.                 memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));

  1893.                 context_count= f->context_count[idx];

  1894.             }else{

  1895.                 memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));

  1896.             }

  1897. 

  1898.             if(f->version <= 2){

  1899.             if(p->context_count < context_count){

  1900.                 av_freep(&p->state);

  1901.                 av_freep(&p->vlc_state);

  1902.             }

  1903.             p->context_count= context_count;

  1904.             }

  1905.         }

  1906.     }

  1907.     return 0;

  1908. }

  1909. 

  1910. static av_cold int decode_init(AVCodecContext *avctx)

  1911. {

  1912.     FFV1Context *f = avctx->priv_data;

  1913. 

  1914.     common_init(avctx);

  1915. 

  1916.     if(avctx->extradata && read_extra_header(f) < 0)

  1917.         return -1;

  1918. 

  1919.     if(init_slice_contexts(f) < 0)

  1920.         return -1;

  1921. 

  1922.     return 0;

  1923. }

  1924. 

  1925. static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){

  1926.     const uint8_t *buf = avpkt->data;

  1927.     int buf_size = avpkt->size;

  1928.     FFV1Context *f = avctx->priv_data;

  1929.     RangeCoder * const c= &f->slice_context[0]->c;

  1930.     AVFrame * const p= &f->picture;

  1931.     int bytes_read, i;

  1932.     uint8_t keystate= 128;

  1933.     const uint8_t *buf_p;

  1934. 

  1935.     AVFrame *picture = data;

  1936. 

  1937.     /* release previously stored data */

  1938.     if (p->data[0])

  1939.         avctx->release_buffer(avctx, p);

  1940. 

  1941.     ff_init_range_decoder(c, buf, buf_size);

  1942.     ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);

  1943. 

  1944. 

  1945.     p->pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P

  1946.     if(get_rac(c, &keystate)){

  1947.         p->key_frame= 1;

  1948.         if(read_header(f) < 0)

  1949.             return -1;

  1950.         if(init_slices_state(f) < 0)

  1951.             return -1;

  1952.     }else{

  1953.         p->key_frame= 0;

  1954.     }

  1955.     if(f->ac>1){

  1956.         int i;

  1957.         for(i=1; i<256; i++){

  1958.             c->one_state[i]= f->state_transition[i];

  1959.             c->zero_state[256-i]= 256-c->one_state[i];

  1960.         }

  1961.     }

  1962. 

  1963.     p->reference= 0;

  1964.     if(avctx->get_buffer(avctx, p) < 0){

  1965.         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  1966.         return -1;

  1967.     }

  1968. 

  1969.     if(avctx->debug&FF_DEBUG_PICT_INFO)

  1970.         av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);

  1971. 

  1972.     buf_p= buf + buf_size;

  1973.     for(i=f->slice_count-1; i>=0; i--){

  1974.         FFV1Context *fs= f->slice_context[i];

  1975.         int trailer = 3 + 4*!!f->ec;

  1976.         int v;

  1977. 

  1978.         if(i) v = AV_RB24(buf_p-trailer)+trailer;

  1979.         else  v = buf_p - c->bytestream_start;

  1980.         if(buf_p - c->bytestream_start < v){

  1981.             av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");

  1982.             return -1;

  1983.         }

  1984.         buf_p -= v;

  1985. 

  1986.         if(f->ec){

  1987.             unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);

  1988.             if(crc){

  1989.                 av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", crc);

  1990.             }

  1991.         }

  1992. 

  1993.         if(i){

  1994.             if(fs->ac){

  1995.                 ff_init_range_decoder(&fs->c, buf_p, v);

  1996.             }else{

  1997.                 init_get_bits(&fs->gb, buf_p, v * 8);

  1998.             }

  1999.         }else{

  2000.             if(!f->ac){

  2001.                 bytes_read = c->bytestream - c->bytestream_start - 1;

  2002.                 if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME

  2003.                 init_get_bits(&fs->gb, buf + bytes_read, (buf_size - bytes_read) * 8);

  2004.             }

  2005.         }

  2006.     }

  2007. 

  2008.     avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));

  2009.     f->picture_number++;

  2010. 

  2011.     *picture= *p;

  2012.     *data_size = sizeof(AVFrame);

  2013. 

  2014.     return buf_size;

  2015. }

  2016. 

  2017. AVCodec ff_ffv1_decoder = {

  2018.     .name           = "ffv1",

  2019.     .type           = AVMEDIA_TYPE_VIDEO,

  2020.     .id             = CODEC_ID_FFV1,

  2021.     .priv_data_size = sizeof(FFV1Context),

  2022.     .init           = decode_init,

  2023.     .close          = common_end,

  2024.     .decode         = decode_frame,

  2025.     .capabilities   = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |

  2026.                       CODEC_CAP_SLICE_THREADS,

  2027.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  2028. };

  2029. 

  2030. #if CONFIG_FFV1_ENCODER

  2031. AVCodec ff_ffv1_encoder = {

  2032.     .name           = "ffv1",

  2033.     .type           = AVMEDIA_TYPE_VIDEO,

  2034.     .id             = CODEC_ID_FFV1,

  2035.     .priv_data_size = sizeof(FFV1Context),

  2036.     .init           = encode_init,

  2037.     .encode2        = encode_frame,

  2038.     .close          = common_end,

  2039.     .capabilities   = CODEC_CAP_SLICE_THREADS,

  2040.     .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},

  2041.     .long_name      = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),

  2042. };

  2043. #endif