• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libavcodec/svq1enc.c

Go to the documentation of this file.
00001 /*
00002  * SVQ1 Encoder
00003  * Copyright (C) 2004 Mike Melanson <melanson@pcisys.net>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00030 #include "avcodec.h"
00031 #include "dsputil.h"
00032 #include "mpegvideo.h"
00033 
00034 #include "svq1.h"
00035 #include "svq1enc_cb.h"
00036 
00037 #undef NDEBUG
00038 #include <assert.h>
00039 
00040 
00041 typedef struct SVQ1Context {
00042     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)
00043     AVCodecContext *avctx;
00044     DSPContext dsp;
00045     AVFrame picture;
00046     AVFrame current_picture;
00047     AVFrame last_picture;
00048     PutBitContext pb;
00049     GetBitContext gb;
00050 
00051     PutBitContext reorder_pb[6]; //why ooh why this sick breadth first order, everything is slower and more complex
00052 
00053     int frame_width;
00054     int frame_height;
00055 
00056     /* Y plane block dimensions */
00057     int y_block_width;
00058     int y_block_height;
00059 
00060     /* U & V plane (C planes) block dimensions */
00061     int c_block_width;
00062     int c_block_height;
00063 
00064     uint16_t *mb_type;
00065     uint32_t *dummy;
00066     int16_t (*motion_val8[3])[2];
00067     int16_t (*motion_val16[3])[2];
00068 
00069     int64_t rd_total;
00070 
00071     uint8_t *scratchbuf;
00072 } SVQ1Context;
00073 
00074 static void svq1_write_header(SVQ1Context *s, int frame_type)
00075 {
00076     int i;
00077 
00078     /* frame code */
00079     put_bits(&s->pb, 22, 0x20);
00080 
00081     /* temporal reference (sure hope this is a "don't care") */
00082     put_bits(&s->pb, 8, 0x00);
00083 
00084     /* frame type */
00085     put_bits(&s->pb, 2, frame_type - 1);
00086 
00087     if (frame_type == FF_I_TYPE) {
00088 
00089         /* no checksum since frame code is 0x20 */
00090 
00091         /* no embedded string either */
00092 
00093         /* output 5 unknown bits (2 + 2 + 1) */
00094         put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
00095 
00096         for (i = 0; i < 7; i++)
00097         {
00098             if ((ff_svq1_frame_size_table[i].width == s->frame_width) &&
00099                 (ff_svq1_frame_size_table[i].height == s->frame_height))
00100             {
00101                 put_bits(&s->pb, 3, i);
00102                 break;
00103             }
00104         }
00105 
00106         if (i == 7)
00107         {
00108             put_bits(&s->pb, 3, 7);
00109                 put_bits(&s->pb, 12, s->frame_width);
00110                 put_bits(&s->pb, 12, s->frame_height);
00111         }
00112     }
00113 
00114     /* no checksum or extra data (next 2 bits get 0) */
00115     put_bits(&s->pb, 2, 0);
00116 }
00117 
00118 
00119 #define QUALITY_THRESHOLD 100
00120 #define THRESHOLD_MULTIPLIER 0.6
00121 
00122 #if HAVE_ALTIVEC
00123 #undef vector
00124 #endif
00125 
00126 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){
00127     int count, y, x, i, j, split, best_mean, best_score, best_count;
00128     int best_vector[6];
00129     int block_sum[7]= {0, 0, 0, 0, 0, 0};
00130     int w= 2<<((level+2)>>1);
00131     int h= 2<<((level+1)>>1);
00132     int size=w*h;
00133     int16_t block[7][256];
00134     const int8_t *codebook_sum, *codebook;
00135     const uint16_t (*mean_vlc)[2];
00136     const uint8_t (*multistage_vlc)[2];
00137 
00138     best_score=0;
00139     //FIXME optimize, this doenst need to be done multiple times
00140     if(intra){
00141         codebook_sum= svq1_intra_codebook_sum[level];
00142         codebook= ff_svq1_intra_codebooks[level];
00143         mean_vlc= ff_svq1_intra_mean_vlc;
00144         multistage_vlc= ff_svq1_intra_multistage_vlc[level];
00145         for(y=0; y<h; y++){
00146             for(x=0; x<w; x++){
00147                 int v= src[x + y*stride];
00148                 block[0][x + w*y]= v;
00149                 best_score += v*v;
00150                 block_sum[0] += v;
00151             }
00152         }
00153     }else{
00154         codebook_sum= svq1_inter_codebook_sum[level];
00155         codebook= ff_svq1_inter_codebooks[level];
00156         mean_vlc= ff_svq1_inter_mean_vlc + 256;
00157         multistage_vlc= ff_svq1_inter_multistage_vlc[level];
00158         for(y=0; y<h; y++){
00159             for(x=0; x<w; x++){
00160                 int v= src[x + y*stride] - ref[x + y*stride];
00161                 block[0][x + w*y]= v;
00162                 best_score += v*v;
00163                 block_sum[0] += v;
00164             }
00165         }
00166     }
00167 
00168     best_count=0;
00169     best_score -= ((block_sum[0]*block_sum[0])>>(level+3));
00170     best_mean= (block_sum[0] + (size>>1)) >> (level+3);
00171 
00172     if(level<4){
00173         for(count=1; count<7; count++){
00174             int best_vector_score= INT_MAX;
00175             int best_vector_sum=-999, best_vector_mean=-999;
00176             const int stage= count-1;
00177             const int8_t *vector;
00178 
00179             for(i=0; i<16; i++){
00180                 int sum= codebook_sum[stage*16 + i];
00181                 int sqr, diff, score;
00182 
00183                 vector = codebook + stage*size*16 + i*size;
00184                 sqr = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);
00185                 diff= block_sum[stage] - sum;
00186                 score= sqr - ((diff*(int64_t)diff)>>(level+3)); //FIXME 64bit slooow
00187                 if(score < best_vector_score){
00188                     int mean= (diff + (size>>1)) >> (level+3);
00189                     assert(mean >-300 && mean<300);
00190                     mean= av_clip(mean, intra?0:-256, 255);
00191                     best_vector_score= score;
00192                     best_vector[stage]= i;
00193                     best_vector_sum= sum;
00194                     best_vector_mean= mean;
00195                 }
00196             }
00197             assert(best_vector_mean != -999);
00198             vector= codebook + stage*size*16 + best_vector[stage]*size;
00199             for(j=0; j<size; j++){
00200                 block[stage+1][j] = block[stage][j] - vector[j];
00201             }
00202             block_sum[stage+1]= block_sum[stage] - best_vector_sum;
00203             best_vector_score +=
00204                 lambda*(+ 1 + 4*count
00205                         + multistage_vlc[1+count][1]
00206                         + mean_vlc[best_vector_mean][1]);
00207 
00208             if(best_vector_score < best_score){
00209                 best_score= best_vector_score;
00210                 best_count= count;
00211                 best_mean= best_vector_mean;
00212             }
00213         }
00214     }
00215 
00216     split=0;
00217     if(best_score > threshold && level){
00218         int score=0;
00219         int offset= (level&1) ? stride*h/2 : w/2;
00220         PutBitContext backup[6];
00221 
00222         for(i=level-1; i>=0; i--){
00223             backup[i]= s->reorder_pb[i];
00224         }
00225         score += encode_block(s, src         , ref         , decoded         , stride, level-1, threshold>>1, lambda, intra);
00226         score += encode_block(s, src + offset, ref + offset, decoded + offset, stride, level-1, threshold>>1, lambda, intra);
00227         score += lambda;
00228 
00229         if(score < best_score){
00230             best_score= score;
00231             split=1;
00232         }else{
00233             for(i=level-1; i>=0; i--){
00234                 s->reorder_pb[i]= backup[i];
00235             }
00236         }
00237     }
00238     if (level > 0)
00239         put_bits(&s->reorder_pb[level], 1, split);
00240 
00241     if(!split){
00242         assert((best_mean >= 0 && best_mean<256) || !intra);
00243         assert(best_mean >= -256 && best_mean<256);
00244         assert(best_count >=0 && best_count<7);
00245         assert(level<4 || best_count==0);
00246 
00247         /* output the encoding */
00248         put_bits(&s->reorder_pb[level],
00249             multistage_vlc[1 + best_count][1],
00250             multistage_vlc[1 + best_count][0]);
00251         put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
00252             mean_vlc[best_mean][0]);
00253 
00254         for (i = 0; i < best_count; i++){
00255             assert(best_vector[i]>=0 && best_vector[i]<16);
00256             put_bits(&s->reorder_pb[level], 4, best_vector[i]);
00257         }
00258 
00259         for(y=0; y<h; y++){
00260             for(x=0; x<w; x++){
00261                 decoded[x + y*stride]= src[x + y*stride] - block[best_count][x + w*y] + best_mean;
00262             }
00263         }
00264     }
00265 
00266     return best_score;
00267 }
00268 
00269 
00270 static int svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane,
00271     int width, int height, int src_stride, int stride)
00272 {
00273     int x, y;
00274     int i;
00275     int block_width, block_height;
00276     int level;
00277     int threshold[6];
00278     const int lambda= (s->picture.quality*s->picture.quality) >> (2*FF_LAMBDA_SHIFT);
00279 
00280     /* figure out the acceptable level thresholds in advance */
00281     threshold[5] = QUALITY_THRESHOLD;
00282     for (level = 4; level >= 0; level--)
00283         threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
00284 
00285     block_width = (width + 15) / 16;
00286     block_height = (height + 15) / 16;
00287 
00288     if(s->picture.pict_type == FF_P_TYPE){
00289         s->m.avctx= s->avctx;
00290         s->m.current_picture_ptr= &s->m.current_picture;
00291         s->m.last_picture_ptr   = &s->m.last_picture;
00292         s->m.last_picture.data[0]= ref_plane;
00293         s->m.linesize=
00294         s->m.last_picture.linesize[0]=
00295         s->m.new_picture.linesize[0]=
00296         s->m.current_picture.linesize[0]= stride;
00297         s->m.width= width;
00298         s->m.height= height;
00299         s->m.mb_width= block_width;
00300         s->m.mb_height= block_height;
00301         s->m.mb_stride= s->m.mb_width+1;
00302         s->m.b8_stride= 2*s->m.mb_width+1;
00303         s->m.f_code=1;
00304         s->m.pict_type= s->picture.pict_type;
00305         s->m.me_method= s->avctx->me_method;
00306         s->m.me.scene_change_score=0;
00307         s->m.flags= s->avctx->flags;
00308 //        s->m.out_format = FMT_H263;
00309 //        s->m.unrestricted_mv= 1;
00310 
00311         s->m.lambda= s->picture.quality;
00312         s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
00313         s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
00314 
00315         if(!s->motion_val8[plane]){
00316             s->motion_val8 [plane]= av_mallocz((s->m.b8_stride*block_height*2 + 2)*2*sizeof(int16_t));
00317             s->motion_val16[plane]= av_mallocz((s->m.mb_stride*(block_height + 2) + 1)*2*sizeof(int16_t));
00318         }
00319 
00320         s->m.mb_type= s->mb_type;
00321 
00322         //dummies, to avoid segfaults
00323         s->m.current_picture.mb_mean=   (uint8_t *)s->dummy;
00324         s->m.current_picture.mb_var=    (uint16_t*)s->dummy;
00325         s->m.current_picture.mc_mb_var= (uint16_t*)s->dummy;
00326         s->m.current_picture.mb_type= s->dummy;
00327 
00328         s->m.current_picture.motion_val[0]= s->motion_val8[plane] + 2;
00329         s->m.p_mv_table= s->motion_val16[plane] + s->m.mb_stride + 1;
00330         s->m.dsp= s->dsp; //move
00331         ff_init_me(&s->m);
00332 
00333         s->m.me.dia_size= s->avctx->dia_size;
00334         s->m.first_slice_line=1;
00335         for (y = 0; y < block_height; y++) {
00336             uint8_t src[stride*16];
00337 
00338             s->m.new_picture.data[0]= src - y*16*stride; //ugly
00339             s->m.mb_y= y;
00340 
00341             for(i=0; i<16 && i + 16*y<height; i++){
00342                 memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
00343                 for(x=width; x<16*block_width; x++)
00344                     src[i*stride+x]= src[i*stride+x-1];
00345             }
00346             for(; i<16 && i + 16*y<16*block_height; i++)
00347                 memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
00348 
00349             for (x = 0; x < block_width; x++) {
00350                 s->m.mb_x= x;
00351                 ff_init_block_index(&s->m);
00352                 ff_update_block_index(&s->m);
00353 
00354                 ff_estimate_p_frame_motion(&s->m, x, y);
00355             }
00356             s->m.first_slice_line=0;
00357         }
00358 
00359         ff_fix_long_p_mvs(&s->m);
00360         ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code, CANDIDATE_MB_TYPE_INTER, 0);
00361     }
00362 
00363     s->m.first_slice_line=1;
00364     for (y = 0; y < block_height; y++) {
00365         uint8_t src[stride*16];
00366 
00367         for(i=0; i<16 && i + 16*y<height; i++){
00368             memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
00369             for(x=width; x<16*block_width; x++)
00370                 src[i*stride+x]= src[i*stride+x-1];
00371         }
00372         for(; i<16 && i + 16*y<16*block_height; i++)
00373             memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
00374 
00375         s->m.mb_y= y;
00376         for (x = 0; x < block_width; x++) {
00377             uint8_t reorder_buffer[3][6][7*32];
00378             int count[3][6];
00379             int offset = y * 16 * stride + x * 16;
00380             uint8_t *decoded= decoded_plane + offset;
00381             uint8_t *ref= ref_plane + offset;
00382             int score[4]={0,0,0,0}, best;
00383             uint8_t *temp = s->scratchbuf;
00384 
00385             if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 3000){ //FIXME check size
00386                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
00387                 return -1;
00388             }
00389 
00390             s->m.mb_x= x;
00391             ff_init_block_index(&s->m);
00392             ff_update_block_index(&s->m);
00393 
00394             if(s->picture.pict_type == FF_I_TYPE || (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTRA)){
00395                 for(i=0; i<6; i++){
00396                     init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i], 7*32);
00397                 }
00398                 if(s->picture.pict_type == FF_P_TYPE){
00399                     const uint8_t *vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
00400                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
00401                     score[0]= vlc[1]*lambda;
00402                 }
00403                 score[0]+= encode_block(s, src+16*x, NULL, temp, stride, 5, 64, lambda, 1);
00404                 for(i=0; i<6; i++){
00405                     count[0][i]= put_bits_count(&s->reorder_pb[i]);
00406                     flush_put_bits(&s->reorder_pb[i]);
00407                 }
00408             }else
00409                 score[0]= INT_MAX;
00410 
00411             best=0;
00412 
00413             if(s->picture.pict_type == FF_P_TYPE){
00414                 const uint8_t *vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
00415                 int mx, my, pred_x, pred_y, dxy;
00416                 int16_t *motion_ptr;
00417 
00418                 motion_ptr= h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
00419                 if(s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTER){
00420                     for(i=0; i<6; i++)
00421                         init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i], 7*32);
00422 
00423                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
00424 
00425                     s->m.pb= s->reorder_pb[5];
00426                     mx= motion_ptr[0];
00427                     my= motion_ptr[1];
00428                     assert(mx>=-32 && mx<=31);
00429                     assert(my>=-32 && my<=31);
00430                     assert(pred_x>=-32 && pred_x<=31);
00431                     assert(pred_y>=-32 && pred_y<=31);
00432                     ff_h263_encode_motion(&s->m, mx - pred_x, 1);
00433                     ff_h263_encode_motion(&s->m, my - pred_y, 1);
00434                     s->reorder_pb[5]= s->m.pb;
00435                     score[1] += lambda*put_bits_count(&s->reorder_pb[5]);
00436 
00437                     dxy= (mx&1) + 2*(my&1);
00438 
00439                     s->dsp.put_pixels_tab[0][dxy](temp+16, ref + (mx>>1) + stride*(my>>1), stride, 16);
00440 
00441                     score[1]+= encode_block(s, src+16*x, temp+16, decoded, stride, 5, 64, lambda, 0);
00442                     best= score[1] <= score[0];
00443 
00444                     vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
00445                     score[2]= s->dsp.sse[0](NULL, src+16*x, ref, stride, 16);
00446                     score[2]+= vlc[1]*lambda;
00447                     if(score[2] < score[best] && mx==0 && my==0){
00448                         best=2;
00449                         s->dsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
00450                         for(i=0; i<6; i++){
00451                             count[2][i]=0;
00452                         }
00453                         put_bits(&s->pb, vlc[1], vlc[0]);
00454                     }
00455                 }
00456 
00457                 if(best==1){
00458                     for(i=0; i<6; i++){
00459                         count[1][i]= put_bits_count(&s->reorder_pb[i]);
00460                         flush_put_bits(&s->reorder_pb[i]);
00461                     }
00462                 }else{
00463                     motion_ptr[0                 ] = motion_ptr[1                 ]=
00464                     motion_ptr[2                 ] = motion_ptr[3                 ]=
00465                     motion_ptr[0+2*s->m.b8_stride] = motion_ptr[1+2*s->m.b8_stride]=
00466                     motion_ptr[2+2*s->m.b8_stride] = motion_ptr[3+2*s->m.b8_stride]=0;
00467                 }
00468             }
00469 
00470             s->rd_total += score[best];
00471 
00472             for(i=5; i>=0; i--){
00473                 ff_copy_bits(&s->pb, reorder_buffer[best][i], count[best][i]);
00474             }
00475             if(best==0){
00476                 s->dsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
00477             }
00478         }
00479         s->m.first_slice_line=0;
00480     }
00481     return 0;
00482 }
00483 
00484 static av_cold int svq1_encode_init(AVCodecContext *avctx)
00485 {
00486     SVQ1Context * const s = avctx->priv_data;
00487 
00488     dsputil_init(&s->dsp, avctx);
00489     avctx->coded_frame= (AVFrame*)&s->picture;
00490 
00491     s->frame_width = avctx->width;
00492     s->frame_height = avctx->height;
00493 
00494     s->y_block_width = (s->frame_width + 15) / 16;
00495     s->y_block_height = (s->frame_height + 15) / 16;
00496 
00497     s->c_block_width = (s->frame_width / 4 + 15) / 16;
00498     s->c_block_height = (s->frame_height / 4 + 15) / 16;
00499 
00500     s->avctx= avctx;
00501     s->m.avctx= avctx;
00502     s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
00503     s->m.me.map       = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
00504     s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
00505     s->mb_type        = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int16_t));
00506     s->dummy          = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int32_t));
00507     h263_encode_init(&s->m); //mv_penalty
00508 
00509     return 0;
00510 }
00511 
00512 static int svq1_encode_frame(AVCodecContext *avctx, unsigned char *buf,
00513     int buf_size, void *data)
00514 {
00515     SVQ1Context * const s = avctx->priv_data;
00516     AVFrame *pict = data;
00517     AVFrame * const p= (AVFrame*)&s->picture;
00518     AVFrame temp;
00519     int i;
00520 
00521     if(avctx->pix_fmt != PIX_FMT_YUV410P){
00522         av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
00523         return -1;
00524     }
00525 
00526     if(!s->current_picture.data[0]){
00527         avctx->get_buffer(avctx, &s->current_picture);
00528         avctx->get_buffer(avctx, &s->last_picture);
00529         s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16);
00530     }
00531 
00532     temp= s->current_picture;
00533     s->current_picture= s->last_picture;
00534     s->last_picture= temp;
00535 
00536     init_put_bits(&s->pb, buf, buf_size);
00537 
00538     *p = *pict;
00539     p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ? FF_P_TYPE : FF_I_TYPE;
00540     p->key_frame = p->pict_type == FF_I_TYPE;
00541 
00542     svq1_write_header(s, p->pict_type);
00543     for(i=0; i<3; i++){
00544         if(svq1_encode_plane(s, i,
00545             s->picture.data[i], s->last_picture.data[i], s->current_picture.data[i],
00546             s->frame_width / (i?4:1), s->frame_height / (i?4:1),
00547             s->picture.linesize[i], s->current_picture.linesize[i]) < 0)
00548                 return -1;
00549     }
00550 
00551 //    align_put_bits(&s->pb);
00552     while(put_bits_count(&s->pb) & 31)
00553         put_bits(&s->pb, 1, 0);
00554 
00555     flush_put_bits(&s->pb);
00556 
00557     return put_bits_count(&s->pb) / 8;
00558 }
00559 
00560 static av_cold int svq1_encode_end(AVCodecContext *avctx)
00561 {
00562     SVQ1Context * const s = avctx->priv_data;
00563     int i;
00564 
00565     av_log(avctx, AV_LOG_DEBUG, "RD: %f\n", s->rd_total/(double)(avctx->width*avctx->height*avctx->frame_number));
00566 
00567     av_freep(&s->m.me.scratchpad);
00568     av_freep(&s->m.me.map);
00569     av_freep(&s->m.me.score_map);
00570     av_freep(&s->mb_type);
00571     av_freep(&s->dummy);
00572     av_freep(&s->scratchbuf);
00573 
00574     for(i=0; i<3; i++){
00575         av_freep(&s->motion_val8[i]);
00576         av_freep(&s->motion_val16[i]);
00577     }
00578 
00579     return 0;
00580 }
00581 
00582 
00583 AVCodec svq1_encoder = {
00584     "svq1",
00585     CODEC_TYPE_VIDEO,
00586     CODEC_ID_SVQ1,
00587     sizeof(SVQ1Context),
00588     svq1_encode_init,
00589     svq1_encode_frame,
00590     svq1_encode_end,
00591     .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV410P, PIX_FMT_NONE},
00592     .long_name= NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1"),
00593 };

Generated on Tue Nov 4 2014 12:59:23 for ffmpeg by  doxygen 1.7.1