git.sesse.net Git - ffmpeg/blob - libavcodec/svq1enc.c

   1 /*
   2  * SVQ1 Encoder
   3  * Copyright (C) 2004 Mike Melanson <melanson@pcisys.net>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * Sorenson Vector Quantizer #1 (SVQ1) video codec.
  25  * For more information of the SVQ1 algorithm, visit:
  26  *   http://www.pcisys.net/~melanson/codecs/
  27  */
  28
  29
  30 #include "avcodec.h"
  31 #include "dsputil.h"
  32 #include "mpegvideo.h"
  33 #include "h263.h"
  34 #include "internal.h"
  35 #include "libavutil/avassert.h"
  36
  37 #include "svq1.h"
  38 #include "svq1enc_cb.h"
  39
  40
  41
  42 typedef struct SVQ1Context {
  43     MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independent of MpegEncContext, so this will be removed then (FIXME/XXX)
  44     AVCodecContext *avctx;
  45     DSPContext dsp;
  46     AVFrame picture;
  47     AVFrame current_picture;
  48     AVFrame last_picture;
  49     PutBitContext pb;
  50     GetBitContext gb;
  51
  52     PutBitContext reorder_pb[6]; //why ooh why this sick breadth first order, everything is slower and more complex
  53
  54     int frame_width;
  55     int frame_height;
  56
  57     /* Y plane block dimensions */
  58     int y_block_width;
  59     int y_block_height;
  60
  61     /* U & V plane (C planes) block dimensions */
  62     int c_block_width;
  63     int c_block_height;
  64
  65     uint16_t *mb_type;
  66     uint32_t *dummy;
  67     int16_t (*motion_val8[3])[2];
  68     int16_t (*motion_val16[3])[2];
  69
  70     int64_t rd_total;
  71
  72     uint8_t *scratchbuf;
  73 } SVQ1Context;
  74
  75 static void svq1_write_header(SVQ1Context *s, int frame_type)
  76 {
  77     int i;
  78
  79     /* frame code */
  80     put_bits(&s->pb, 22, 0x20);
  81
  82     /* temporal reference (sure hope this is a "don't care") */
  83     put_bits(&s->pb, 8, 0x00);
  84
  85     /* frame type */
  86     put_bits(&s->pb, 2, frame_type - 1);
  87
  88     if (frame_type == AV_PICTURE_TYPE_I) {
  89
  90         /* no checksum since frame code is 0x20 */
  91
  92         /* no embedded string either */
  93
  94         /* output 5 unknown bits (2 + 2 + 1) */
  95         put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
  96
  97         i= ff_match_2uint16((void*)ff_svq1_frame_size_table, FF_ARRAY_ELEMS(ff_svq1_frame_size_table), s->frame_width, s->frame_height);
  98         put_bits(&s->pb, 3, i);
  99
 100         if (i == 7)
 101         {
 102                 put_bits(&s->pb, 12, s->frame_width);
 103                 put_bits(&s->pb, 12, s->frame_height);
 104         }
 105     }
 106
 107     /* no checksum or extra data (next 2 bits get 0) */
 108     put_bits(&s->pb, 2, 0);
 109 }
 110
 111
 112 #define QUALITY_THRESHOLD 100
 113 #define THRESHOLD_MULTIPLIER 0.6
 114
 115 static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, int level, int threshold, int lambda, int intra){
 116     int count, y, x, i, j, split, best_mean, best_score, best_count;
 117     int best_vector[6];
 118     int block_sum[7]= {0, 0, 0, 0, 0, 0};
 119     int w= 2<<((level+2)>>1);
 120     int h= 2<<((level+1)>>1);
 121     int size=w*h;
 122     int16_t block[7][256];
 123     const int8_t *codebook_sum, *codebook;
 124     const uint16_t (*mean_vlc)[2];
 125     const uint8_t (*multistage_vlc)[2];
 126
 127     best_score=0;
 128     //FIXME optimize, this doenst need to be done multiple times
 129     if(intra){
 130         codebook_sum= svq1_intra_codebook_sum[level];
 131         codebook= ff_svq1_intra_codebooks[level];
 132         mean_vlc= ff_svq1_intra_mean_vlc;
 133         multistage_vlc= ff_svq1_intra_multistage_vlc[level];
 134         for(y=0; y<h; y++){
 135             for(x=0; x<w; x++){
 136                 int v= src[x + y*stride];
 137                 block[0][x + w*y]= v;
 138                 best_score += v*v;
 139                 block_sum[0] += v;
 140             }
 141         }
 142     }else{
 143         codebook_sum= svq1_inter_codebook_sum[level];
 144         codebook= ff_svq1_inter_codebooks[level];
 145         mean_vlc= ff_svq1_inter_mean_vlc + 256;
 146         multistage_vlc= ff_svq1_inter_multistage_vlc[level];
 147         for(y=0; y<h; y++){
 148             for(x=0; x<w; x++){
 149                 int v= src[x + y*stride] - ref[x + y*stride];
 150                 block[0][x + w*y]= v;
 151                 best_score += v*v;
 152                 block_sum[0] += v;
 153             }
 154         }
 155     }
 156
 157     best_count=0;
 158     best_score -= (int)(((unsigned)block_sum[0]*block_sum[0])>>(level+3));
 159     best_mean= (block_sum[0] + (size>>1)) >> (level+3);
 160
 161     if(level<4){
 162         for(count=1; count<7; count++){
 163             int best_vector_score= INT_MAX;
 164             int best_vector_sum=-999, best_vector_mean=-999;
 165             const int stage= count-1;
 166             const int8_t *vector;
 167
 168             for(i=0; i<16; i++){
 169                 int sum= codebook_sum[stage*16 + i];
 170                 int sqr, diff, score;
 171
 172                 vector = codebook + stage*size*16 + i*size;
 173                 sqr = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);
 174                 diff= block_sum[stage] - sum;
 175                 score= sqr - ((diff*(int64_t)diff)>>(level+3)); //FIXME 64bit slooow
 176                 if(score < best_vector_score){
 177                     int mean= (diff + (size>>1)) >> (level+3);
 178                     av_assert2(mean >-300 && mean<300);
 179                     mean= av_clip(mean, intra?0:-256, 255);
 180                     best_vector_score= score;
 181                     best_vector[stage]= i;
 182                     best_vector_sum= sum;
 183                     best_vector_mean= mean;
 184                 }
 185             }
 186             av_assert0(best_vector_mean != -999);
 187             vector= codebook + stage*size*16 + best_vector[stage]*size;
 188             for(j=0; j<size; j++){
 189                 block[stage+1][j] = block[stage][j] - vector[j];
 190             }
 191             block_sum[stage+1]= block_sum[stage] - best_vector_sum;
 192             best_vector_score +=
 193                 lambda*(+ 1 + 4*count
 194                         + multistage_vlc[1+count][1]
 195                         + mean_vlc[best_vector_mean][1]);
 196
 197             if(best_vector_score < best_score){
 198                 best_score= best_vector_score;
 199                 best_count= count;
 200                 best_mean= best_vector_mean;
 201             }
 202         }
 203     }
 204
 205     split=0;
 206     if(best_score > threshold && level){
 207         int score=0;
 208         int offset= (level&1) ? stride*h/2 : w/2;
 209         PutBitContext backup[6];
 210
 211         for(i=level-1; i>=0; i--){
 212             backup[i]= s->reorder_pb[i];
 213         }
 214         score += encode_block(s, src         , ref         , decoded         , stride, level-1, threshold>>1, lambda, intra);
 215         score += encode_block(s, src + offset, ref + offset, decoded + offset, stride, level-1, threshold>>1, lambda, intra);
 216         score += lambda;
 217
 218         if(score < best_score){
 219             best_score= score;
 220             split=1;
 221         }else{
 222             for(i=level-1; i>=0; i--){
 223                 s->reorder_pb[i]= backup[i];
 224             }
 225         }
 226     }
 227     if (level > 0)
 228         put_bits(&s->reorder_pb[level], 1, split);
 229
 230     if(!split){
 231         av_assert1((best_mean >= 0 && best_mean<256) || !intra);
 232         av_assert1(best_mean >= -256 && best_mean<256);
 233         av_assert1(best_count >=0 && best_count<7);
 234         av_assert1(level<4 || best_count==0);
 235
 236         /* output the encoding */
 237         put_bits(&s->reorder_pb[level],
 238             multistage_vlc[1 + best_count][1],
 239             multistage_vlc[1 + best_count][0]);
 240         put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
 241             mean_vlc[best_mean][0]);
 242
 243         for (i = 0; i < best_count; i++){
 244             av_assert2(best_vector[i]>=0 && best_vector[i]<16);
 245             put_bits(&s->reorder_pb[level], 4, best_vector[i]);
 246         }
 247
 248         for(y=0; y<h; y++){
 249             for(x=0; x<w; x++){
 250                 decoded[x + y*stride]= src[x + y*stride] - block[best_count][x + w*y] + best_mean;
 251             }
 252         }
 253     }
 254
 255     return best_score;
 256 }
 257
 258
 259 static int svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane,
 260     int width, int height, int src_stride, int stride)
 261 {
 262     int x, y;
 263     int i;
 264     int block_width, block_height;
 265     int level;
 266     int threshold[6];
 267     uint8_t *src = s->scratchbuf + stride * 16;
 268     const int lambda= (s->picture.quality*s->picture.quality) >> (2*FF_LAMBDA_SHIFT);
 269
 270     /* figure out the acceptable level thresholds in advance */
 271     threshold[5] = QUALITY_THRESHOLD;
 272     for (level = 4; level >= 0; level--)
 273         threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
 274
 275     block_width = (width + 15) / 16;
 276     block_height = (height + 15) / 16;
 277
 278     if(s->picture.pict_type == AV_PICTURE_TYPE_P){
 279         s->m.avctx= s->avctx;
 280         s->m.current_picture_ptr= &s->m.current_picture;
 281         s->m.last_picture_ptr   = &s->m.last_picture;
 282         s->m.last_picture.f.data[0] = ref_plane;
 283         s->m.linesize=
 284         s->m.last_picture.f.linesize[0] =
 285         s->m.new_picture.f.linesize[0] =
 286         s->m.current_picture.f.linesize[0] = stride;
 287         s->m.width= width;
 288         s->m.height= height;
 289         s->m.mb_width= block_width;
 290         s->m.mb_height= block_height;
 291         s->m.mb_stride= s->m.mb_width+1;
 292         s->m.b8_stride= 2*s->m.mb_width+1;
 293         s->m.f_code=1;
 294         s->m.pict_type= s->picture.pict_type;
 295         s->m.me_method= s->avctx->me_method;
 296         s->m.me.scene_change_score=0;
 297         s->m.flags= s->avctx->flags;
 298 //        s->m.out_format = FMT_H263;
 299 //        s->m.unrestricted_mv= 1;
 300
 301         s->m.lambda= s->picture.quality;
 302         s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
 303         s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
 304
 305         if(!s->motion_val8[plane]){
 306             s->motion_val8 [plane]= av_mallocz((s->m.b8_stride*block_height*2 + 2)*2*sizeof(int16_t));
 307             s->motion_val16[plane]= av_mallocz((s->m.mb_stride*(block_height + 2) + 1)*2*sizeof(int16_t));
 308         }
 309
 310         s->m.mb_type= s->mb_type;
 311
 312         //dummies, to avoid segfaults
 313         s->m.current_picture.mb_mean=   (uint8_t *)s->dummy;
 314         s->m.current_picture.mb_var=    (uint16_t*)s->dummy;
 315         s->m.current_picture.mc_mb_var= (uint16_t*)s->dummy;
 316         s->m.current_picture.f.mb_type = s->dummy;
 317
 318         s->m.current_picture.f.motion_val[0] = s->motion_val8[plane] + 2;
 319         s->m.p_mv_table= s->motion_val16[plane] + s->m.mb_stride + 1;
 320         s->m.dsp= s->dsp; //move
 321         ff_init_me(&s->m);
 322
 323         s->m.me.dia_size= s->avctx->dia_size;
 324         s->m.first_slice_line=1;
 325         for (y = 0; y < block_height; y++) {
 326             s->m.new_picture.f.data[0] = src - y*16*stride; //ugly
 327             s->m.mb_y= y;
 328
 329             for(i=0; i<16 && i + 16*y<height; i++){
 330                 memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
 331                 for(x=width; x<16*block_width; x++)
 332                     src[i*stride+x]= src[i*stride+x-1];
 333             }
 334             for(; i<16 && i + 16*y<16*block_height; i++)
 335                 memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
 336
 337             for (x = 0; x < block_width; x++) {
 338                 s->m.mb_x= x;
 339                 ff_init_block_index(&s->m);
 340                 ff_update_block_index(&s->m);
 341
 342                 ff_estimate_p_frame_motion(&s->m, x, y);
 343             }
 344             s->m.first_slice_line=0;
 345         }
 346
 347         ff_fix_long_p_mvs(&s->m);
 348         ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code, CANDIDATE_MB_TYPE_INTER, 0);
 349     }
 350
 351     s->m.first_slice_line=1;
 352     for (y = 0; y < block_height; y++) {
 353         for(i=0; i<16 && i + 16*y<height; i++){
 354             memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
 355             for(x=width; x<16*block_width; x++)
 356                 src[i*stride+x]= src[i*stride+x-1];
 357         }
 358         for(; i<16 && i + 16*y<16*block_height; i++)
 359             memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
 360
 361         s->m.mb_y= y;
 362         for (x = 0; x < block_width; x++) {
 363             uint8_t reorder_buffer[3][6][7*32];
 364             int count[3][6];
 365             int offset = y * 16 * stride + x * 16;
 366             uint8_t *decoded= decoded_plane + offset;
 367             uint8_t *ref= ref_plane + offset;
 368             int score[4]={0,0,0,0}, best;
 369             uint8_t *temp = s->scratchbuf;
 370
 371             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 3000){ //FIXME check size
 372                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
 373                 return -1;
 374             }
 375
 376             s->m.mb_x= x;
 377             ff_init_block_index(&s->m);
 378             ff_update_block_index(&s->m);
 379
 380             if(s->picture.pict_type == AV_PICTURE_TYPE_I || (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTRA)){
 381                 for(i=0; i<6; i++){
 382                     init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i], 7*32);
 383                 }
 384                 if(s->picture.pict_type == AV_PICTURE_TYPE_P){
 385                     const uint8_t *vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
 386                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
 387                     score[0]= vlc[1]*lambda;
 388                 }
 389                 score[0]+= encode_block(s, src+16*x, NULL, temp, stride, 5, 64, lambda, 1);
 390                 for(i=0; i<6; i++){
 391                     count[0][i]= put_bits_count(&s->reorder_pb[i]);
 392                     flush_put_bits(&s->reorder_pb[i]);
 393                 }
 394             }else
 395                 score[0]= INT_MAX;
 396
 397             best=0;
 398
 399             if(s->picture.pict_type == AV_PICTURE_TYPE_P){
 400                 const uint8_t *vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
 401                 int mx, my, pred_x, pred_y, dxy;
 402                 int16_t *motion_ptr;
 403
 404                 motion_ptr= ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
 405                 if(s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTER){
 406                     for(i=0; i<6; i++)
 407                         init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i], 7*32);
 408
 409                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
 410
 411                     s->m.pb= s->reorder_pb[5];
 412                     mx= motion_ptr[0];
 413                     my= motion_ptr[1];
 414                     av_assert1(mx>=-32 && mx<=31);
 415                     av_assert1(my>=-32 && my<=31);
 416                     av_assert1(pred_x>=-32 && pred_x<=31);
 417                     av_assert1(pred_y>=-32 && pred_y<=31);
 418                     ff_h263_encode_motion(&s->m, mx - pred_x, 1);
 419                     ff_h263_encode_motion(&s->m, my - pred_y, 1);
 420                     s->reorder_pb[5]= s->m.pb;
 421                     score[1] += lambda*put_bits_count(&s->reorder_pb[5]);
 422
 423                     dxy= (mx&1) + 2*(my&1);
 424
 425                     s->dsp.put_pixels_tab[0][dxy](temp+16, ref + (mx>>1) + stride*(my>>1), stride, 16);
 426
 427                     score[1]+= encode_block(s, src+16*x, temp+16, decoded, stride, 5, 64, lambda, 0);
 428                     best= score[1] <= score[0];
 429
 430                     vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
 431                     score[2]= s->dsp.sse[0](NULL, src+16*x, ref, stride, 16);
 432                     score[2]+= vlc[1]*lambda;
 433                     if(score[2] < score[best] && mx==0 && my==0){
 434                         best=2;
 435                         s->dsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
 436                         for(i=0; i<6; i++){
 437                             count[2][i]=0;
 438                         }
 439                         put_bits(&s->pb, vlc[1], vlc[0]);
 440                     }
 441                 }
 442
 443                 if(best==1){
 444                     for(i=0; i<6; i++){
 445                         count[1][i]= put_bits_count(&s->reorder_pb[i]);
 446                         flush_put_bits(&s->reorder_pb[i]);
 447                     }
 448                 }else{
 449                     motion_ptr[0                 ] = motion_ptr[1                 ]=
 450                     motion_ptr[2                 ] = motion_ptr[3                 ]=
 451                     motion_ptr[0+2*s->m.b8_stride] = motion_ptr[1+2*s->m.b8_stride]=
 452                     motion_ptr[2+2*s->m.b8_stride] = motion_ptr[3+2*s->m.b8_stride]=0;
 453                 }
 454             }
 455
 456             s->rd_total += score[best];
 457
 458             for(i=5; i>=0; i--){
 459                 avpriv_copy_bits(&s->pb, reorder_buffer[best][i], count[best][i]);
 460             }
 461             if(best==0){
 462                 s->dsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
 463             }
 464         }
 465         s->m.first_slice_line=0;
 466     }
 467     return 0;
 468 }
 469
 470 static av_cold int svq1_encode_init(AVCodecContext *avctx)
 471 {
 472     SVQ1Context * const s = avctx->priv_data;
 473
 474     ff_dsputil_init(&s->dsp, avctx);
 475     avctx->coded_frame = &s->picture;
 476
 477     s->frame_width = avctx->width;
 478     s->frame_height = avctx->height;
 479
 480     s->y_block_width = (s->frame_width + 15) / 16;
 481     s->y_block_height = (s->frame_height + 15) / 16;
 482
 483     s->c_block_width = (s->frame_width / 4 + 15) / 16;
 484     s->c_block_height = (s->frame_height / 4 + 15) / 16;
 485
 486     s->avctx= avctx;
 487     s->m.avctx= avctx;
 488     s->m.me.temp      =
 489     s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
 490     s->m.me.map       = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
 491     s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
 492     s->mb_type        = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int16_t));
 493     s->dummy          = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int32_t));
 494     ff_h263_encode_init(&s->m); //mv_penalty
 495
 496     return 0;
 497 }
 498
 499 static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
 500                              const AVFrame *pict, int *got_packet)
 501 {
 502     SVQ1Context * const s = avctx->priv_data;
 503     AVFrame * const p = &s->picture;
 504     AVFrame temp;
 505     int i, ret;
 506
 507     if ((ret = ff_alloc_packet2(avctx, pkt, s->y_block_width*s->y_block_height*MAX_MB_BYTES*3 + FF_MIN_BUFFER_SIZE) < 0))
 508         return ret;
 509
 510     if(avctx->pix_fmt != PIX_FMT_YUV410P){
 511         av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
 512         return -1;
 513     }
 514
 515     if(!s->current_picture.data[0]){
 516         avctx->get_buffer(avctx, &s->current_picture);
 517         avctx->get_buffer(avctx, &s->last_picture);
 518         s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16 * 2);
 519     }
 520
 521     temp= s->current_picture;
 522     s->current_picture= s->last_picture;
 523     s->last_picture= temp;
 524
 525     init_put_bits(&s->pb, pkt->data, pkt->size);
 526
 527     *p = *pict;
 528     p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
 529     p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;
 530
 531     svq1_write_header(s, p->pict_type);
 532     for(i=0; i<3; i++){
 533         if(svq1_encode_plane(s, i,
 534             s->picture.data[i], s->last_picture.data[i], s->current_picture.data[i],
 535             s->frame_width / (i?4:1), s->frame_height / (i?4:1),
 536             s->picture.linesize[i], s->current_picture.linesize[i]) < 0)
 537                 return -1;
 538     }
 539
 540 //    avpriv_align_put_bits(&s->pb);
 541     while(put_bits_count(&s->pb) & 31)
 542         put_bits(&s->pb, 1, 0);
 543
 544     flush_put_bits(&s->pb);
 545
 546     pkt->size = put_bits_count(&s->pb) / 8;
 547     if (p->pict_type == AV_PICTURE_TYPE_I)
 548         pkt->flags |= AV_PKT_FLAG_KEY;
 549     *got_packet = 1;
 550
 551     return 0;
 552 }
 553
 554 static av_cold int svq1_encode_end(AVCodecContext *avctx)
 555 {
 556     SVQ1Context * const s = avctx->priv_data;
 557     int i;
 558
 559     av_log(avctx, AV_LOG_DEBUG, "RD: %f\n", s->rd_total/(double)(avctx->width*avctx->height*avctx->frame_number));
 560
 561     av_freep(&s->m.me.scratchpad);
 562     av_freep(&s->m.me.map);
 563     av_freep(&s->m.me.score_map);
 564     av_freep(&s->mb_type);
 565     av_freep(&s->dummy);
 566     av_freep(&s->scratchbuf);
 567
 568     for(i=0; i<3; i++){
 569         av_freep(&s->motion_val8[i]);
 570         av_freep(&s->motion_val16[i]);
 571     }
 572     if(s->current_picture.data[0])
 573         avctx->release_buffer(avctx, &s->current_picture);
 574     if(s->last_picture.data[0])
 575         avctx->release_buffer(avctx, &s->last_picture);
 576
 577     return 0;
 578 }
 579
 580
 581 AVCodec ff_svq1_encoder = {
 582     .name           = "svq1",
 583     .type           = AVMEDIA_TYPE_VIDEO,
 584     .id             = CODEC_ID_SVQ1,
 585     .priv_data_size = sizeof(SVQ1Context),
 586     .init           = svq1_encode_init,
 587     .encode2        = svq1_encode_frame,
 588     .close          = svq1_encode_end,
 589     .pix_fmts       = (const enum PixelFormat[]){ PIX_FMT_YUV410P, PIX_FMT_NONE },
 590     .long_name      = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
 591 };