Statistics
| Branch: | Revision:

ffmpeg / libavcodec / svq1enc.c @ c46eeae2

History | View | Annotate | Download (19.7 KB)

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 libavcodec/svq1enc.c
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

    
35
#include "svq1.h"
36
#include "svq1enc_cb.h"
37

    
38
#undef NDEBUG
39
#include <assert.h>
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 == FF_I_TYPE) {
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(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
#if HAVE_ALTIVEC
116
#undef vector
117
#endif
118

    
119
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){
120
    int count, y, x, i, j, split, best_mean, best_score, best_count;
121
    int best_vector[6];
122
    int block_sum[7]= {0, 0, 0, 0, 0, 0};
123
    int w= 2<<((level+2)>>1);
124
    int h= 2<<((level+1)>>1);
125
    int size=w*h;
126
    int16_t block[7][256];
127
    const int8_t *codebook_sum, *codebook;
128
    const uint16_t (*mean_vlc)[2];
129
    const uint8_t (*multistage_vlc)[2];
130

    
131
    best_score=0;
132
    //FIXME optimize, this doenst need to be done multiple times
133
    if(intra){
134
        codebook_sum= svq1_intra_codebook_sum[level];
135
        codebook= ff_svq1_intra_codebooks[level];
136
        mean_vlc= ff_svq1_intra_mean_vlc;
137
        multistage_vlc= ff_svq1_intra_multistage_vlc[level];
138
        for(y=0; y<h; y++){
139
            for(x=0; x<w; x++){
140
                int v= src[x + y*stride];
141
                block[0][x + w*y]= v;
142
                best_score += v*v;
143
                block_sum[0] += v;
144
            }
145
        }
146
    }else{
147
        codebook_sum= svq1_inter_codebook_sum[level];
148
        codebook= ff_svq1_inter_codebooks[level];
149
        mean_vlc= ff_svq1_inter_mean_vlc + 256;
150
        multistage_vlc= ff_svq1_inter_multistage_vlc[level];
151
        for(y=0; y<h; y++){
152
            for(x=0; x<w; x++){
153
                int v= src[x + y*stride] - ref[x + y*stride];
154
                block[0][x + w*y]= v;
155
                best_score += v*v;
156
                block_sum[0] += v;
157
            }
158
        }
159
    }
160

    
161
    best_count=0;
162
    best_score -= ((block_sum[0]*block_sum[0])>>(level+3));
163
    best_mean= (block_sum[0] + (size>>1)) >> (level+3);
164

    
165
    if(level<4){
166
        for(count=1; count<7; count++){
167
            int best_vector_score= INT_MAX;
168
            int best_vector_sum=-999, best_vector_mean=-999;
169
            const int stage= count-1;
170
            const int8_t *vector;
171

    
172
            for(i=0; i<16; i++){
173
                int sum= codebook_sum[stage*16 + i];
174
                int sqr, diff, score;
175

    
176
                vector = codebook + stage*size*16 + i*size;
177
                sqr = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);
178
                diff= block_sum[stage] - sum;
179
                score= sqr - ((diff*(int64_t)diff)>>(level+3)); //FIXME 64bit slooow
180
                if(score < best_vector_score){
181
                    int mean= (diff + (size>>1)) >> (level+3);
182
                    assert(mean >-300 && mean<300);
183
                    mean= av_clip(mean, intra?0:-256, 255);
184
                    best_vector_score= score;
185
                    best_vector[stage]= i;
186
                    best_vector_sum= sum;
187
                    best_vector_mean= mean;
188
                }
189
            }
190
            assert(best_vector_mean != -999);
191
            vector= codebook + stage*size*16 + best_vector[stage]*size;
192
            for(j=0; j<size; j++){
193
                block[stage+1][j] = block[stage][j] - vector[j];
194
            }
195
            block_sum[stage+1]= block_sum[stage] - best_vector_sum;
196
            best_vector_score +=
197
                lambda*(+ 1 + 4*count
198
                        + multistage_vlc[1+count][1]
199
                        + mean_vlc[best_vector_mean][1]);
200

    
201
            if(best_vector_score < best_score){
202
                best_score= best_vector_score;
203
                best_count= count;
204
                best_mean= best_vector_mean;
205
            }
206
        }
207
    }
208

    
209
    split=0;
210
    if(best_score > threshold && level){
211
        int score=0;
212
        int offset= (level&1) ? stride*h/2 : w/2;
213
        PutBitContext backup[6];
214

    
215
        for(i=level-1; i>=0; i--){
216
            backup[i]= s->reorder_pb[i];
217
        }
218
        score += encode_block(s, src         , ref         , decoded         , stride, level-1, threshold>>1, lambda, intra);
219
        score += encode_block(s, src + offset, ref + offset, decoded + offset, stride, level-1, threshold>>1, lambda, intra);
220
        score += lambda;
221

    
222
        if(score < best_score){
223
            best_score= score;
224
            split=1;
225
        }else{
226
            for(i=level-1; i>=0; i--){
227
                s->reorder_pb[i]= backup[i];
228
            }
229
        }
230
    }
231
    if (level > 0)
232
        put_bits(&s->reorder_pb[level], 1, split);
233

    
234
    if(!split){
235
        assert((best_mean >= 0 && best_mean<256) || !intra);
236
        assert(best_mean >= -256 && best_mean<256);
237
        assert(best_count >=0 && best_count<7);
238
        assert(level<4 || best_count==0);
239

    
240
        /* output the encoding */
241
        put_bits(&s->reorder_pb[level],
242
            multistage_vlc[1 + best_count][1],
243
            multistage_vlc[1 + best_count][0]);
244
        put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
245
            mean_vlc[best_mean][0]);
246

    
247
        for (i = 0; i < best_count; i++){
248
            assert(best_vector[i]>=0 && best_vector[i]<16);
249
            put_bits(&s->reorder_pb[level], 4, best_vector[i]);
250
        }
251

    
252
        for(y=0; y<h; y++){
253
            for(x=0; x<w; x++){
254
                decoded[x + y*stride]= src[x + y*stride] - block[best_count][x + w*y] + best_mean;
255
            }
256
        }
257
    }
258

    
259
    return best_score;
260
}
261

    
262

    
263
static int svq1_encode_plane(SVQ1Context *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane,
264
    int width, int height, int src_stride, int stride)
265
{
266
    int x, y;
267
    int i;
268
    int block_width, block_height;
269
    int level;
270
    int threshold[6];
271
    const int lambda= (s->picture.quality*s->picture.quality) >> (2*FF_LAMBDA_SHIFT);
272

    
273
    /* figure out the acceptable level thresholds in advance */
274
    threshold[5] = QUALITY_THRESHOLD;
275
    for (level = 4; level >= 0; level--)
276
        threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
277

    
278
    block_width = (width + 15) / 16;
279
    block_height = (height + 15) / 16;
280

    
281
    if(s->picture.pict_type == FF_P_TYPE){
282
        s->m.avctx= s->avctx;
283
        s->m.current_picture_ptr= &s->m.current_picture;
284
        s->m.last_picture_ptr   = &s->m.last_picture;
285
        s->m.last_picture.data[0]= ref_plane;
286
        s->m.linesize=
287
        s->m.last_picture.linesize[0]=
288
        s->m.new_picture.linesize[0]=
289
        s->m.current_picture.linesize[0]= stride;
290
        s->m.width= width;
291
        s->m.height= height;
292
        s->m.mb_width= block_width;
293
        s->m.mb_height= block_height;
294
        s->m.mb_stride= s->m.mb_width+1;
295
        s->m.b8_stride= 2*s->m.mb_width+1;
296
        s->m.f_code=1;
297
        s->m.pict_type= s->picture.pict_type;
298
        s->m.me_method= s->avctx->me_method;
299
        s->m.me.scene_change_score=0;
300
        s->m.flags= s->avctx->flags;
301
//        s->m.out_format = FMT_H263;
302
//        s->m.unrestricted_mv= 1;
303

    
304
        s->m.lambda= s->picture.quality;
305
        s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
306
        s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
307

    
308
        if(!s->motion_val8[plane]){
309
            s->motion_val8 [plane]= av_mallocz((s->m.b8_stride*block_height*2 + 2)*2*sizeof(int16_t));
310
            s->motion_val16[plane]= av_mallocz((s->m.mb_stride*(block_height + 2) + 1)*2*sizeof(int16_t));
311
        }
312

    
313
        s->m.mb_type= s->mb_type;
314

    
315
        //dummies, to avoid segfaults
316
        s->m.current_picture.mb_mean=   (uint8_t *)s->dummy;
317
        s->m.current_picture.mb_var=    (uint16_t*)s->dummy;
318
        s->m.current_picture.mc_mb_var= (uint16_t*)s->dummy;
319
        s->m.current_picture.mb_type= s->dummy;
320

    
321
        s->m.current_picture.motion_val[0]= s->motion_val8[plane] + 2;
322
        s->m.p_mv_table= s->motion_val16[plane] + s->m.mb_stride + 1;
323
        s->m.dsp= s->dsp; //move
324
        ff_init_me(&s->m);
325

    
326
        s->m.me.dia_size= s->avctx->dia_size;
327
        s->m.first_slice_line=1;
328
        for (y = 0; y < block_height; y++) {
329
            uint8_t src[stride*16];
330

    
331
            s->m.new_picture.data[0]= src - y*16*stride; //ugly
332
            s->m.mb_y= y;
333

    
334
            for(i=0; i<16 && i + 16*y<height; i++){
335
                memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
336
                for(x=width; x<16*block_width; x++)
337
                    src[i*stride+x]= src[i*stride+x-1];
338
            }
339
            for(; i<16 && i + 16*y<16*block_height; i++)
340
                memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
341

    
342
            for (x = 0; x < block_width; x++) {
343
                s->m.mb_x= x;
344
                ff_init_block_index(&s->m);
345
                ff_update_block_index(&s->m);
346

    
347
                ff_estimate_p_frame_motion(&s->m, x, y);
348
            }
349
            s->m.first_slice_line=0;
350
        }
351

    
352
        ff_fix_long_p_mvs(&s->m);
353
        ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code, CANDIDATE_MB_TYPE_INTER, 0);
354
    }
355

    
356
    s->m.first_slice_line=1;
357
    for (y = 0; y < block_height; y++) {
358
        uint8_t src[stride*16];
359

    
360
        for(i=0; i<16 && i + 16*y<height; i++){
361
            memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
362
            for(x=width; x<16*block_width; x++)
363
                src[i*stride+x]= src[i*stride+x-1];
364
        }
365
        for(; i<16 && i + 16*y<16*block_height; i++)
366
            memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
367

    
368
        s->m.mb_y= y;
369
        for (x = 0; x < block_width; x++) {
370
            uint8_t reorder_buffer[3][6][7*32];
371
            int count[3][6];
372
            int offset = y * 16 * stride + x * 16;
373
            uint8_t *decoded= decoded_plane + offset;
374
            uint8_t *ref= ref_plane + offset;
375
            int score[4]={0,0,0,0}, best;
376
            uint8_t *temp = s->scratchbuf;
377

    
378
            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 3000){ //FIXME check size
379
                av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
380
                return -1;
381
            }
382

    
383
            s->m.mb_x= x;
384
            ff_init_block_index(&s->m);
385
            ff_update_block_index(&s->m);
386

    
387
            if(s->picture.pict_type == FF_I_TYPE || (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTRA)){
388
                for(i=0; i<6; i++){
389
                    init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i], 7*32);
390
                }
391
                if(s->picture.pict_type == FF_P_TYPE){
392
                    const uint8_t *vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
393
                    put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
394
                    score[0]= vlc[1]*lambda;
395
                }
396
                score[0]+= encode_block(s, src+16*x, NULL, temp, stride, 5, 64, lambda, 1);
397
                for(i=0; i<6; i++){
398
                    count[0][i]= put_bits_count(&s->reorder_pb[i]);
399
                    flush_put_bits(&s->reorder_pb[i]);
400
                }
401
            }else
402
                score[0]= INT_MAX;
403

    
404
            best=0;
405

    
406
            if(s->picture.pict_type == FF_P_TYPE){
407
                const uint8_t *vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
408
                int mx, my, pred_x, pred_y, dxy;
409
                int16_t *motion_ptr;
410

    
411
                motion_ptr= h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
412
                if(s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTER){
413
                    for(i=0; i<6; i++)
414
                        init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i], 7*32);
415

    
416
                    put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
417

    
418
                    s->m.pb= s->reorder_pb[5];
419
                    mx= motion_ptr[0];
420
                    my= motion_ptr[1];
421
                    assert(mx>=-32 && mx<=31);
422
                    assert(my>=-32 && my<=31);
423
                    assert(pred_x>=-32 && pred_x<=31);
424
                    assert(pred_y>=-32 && pred_y<=31);
425
                    ff_h263_encode_motion(&s->m, mx - pred_x, 1);
426
                    ff_h263_encode_motion(&s->m, my - pred_y, 1);
427
                    s->reorder_pb[5]= s->m.pb;
428
                    score[1] += lambda*put_bits_count(&s->reorder_pb[5]);
429

    
430
                    dxy= (mx&1) + 2*(my&1);
431

    
432
                    s->dsp.put_pixels_tab[0][dxy](temp+16, ref + (mx>>1) + stride*(my>>1), stride, 16);
433

    
434
                    score[1]+= encode_block(s, src+16*x, temp+16, decoded, stride, 5, 64, lambda, 0);
435
                    best= score[1] <= score[0];
436

    
437
                    vlc= ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
438
                    score[2]= s->dsp.sse[0](NULL, src+16*x, ref, stride, 16);
439
                    score[2]+= vlc[1]*lambda;
440
                    if(score[2] < score[best] && mx==0 && my==0){
441
                        best=2;
442
                        s->dsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
443
                        for(i=0; i<6; i++){
444
                            count[2][i]=0;
445
                        }
446
                        put_bits(&s->pb, vlc[1], vlc[0]);
447
                    }
448
                }
449

    
450
                if(best==1){
451
                    for(i=0; i<6; i++){
452
                        count[1][i]= put_bits_count(&s->reorder_pb[i]);
453
                        flush_put_bits(&s->reorder_pb[i]);
454
                    }
455
                }else{
456
                    motion_ptr[0                 ] = motion_ptr[1                 ]=
457
                    motion_ptr[2                 ] = motion_ptr[3                 ]=
458
                    motion_ptr[0+2*s->m.b8_stride] = motion_ptr[1+2*s->m.b8_stride]=
459
                    motion_ptr[2+2*s->m.b8_stride] = motion_ptr[3+2*s->m.b8_stride]=0;
460
                }
461
            }
462

    
463
            s->rd_total += score[best];
464

    
465
            for(i=5; i>=0; i--){
466
                ff_copy_bits(&s->pb, reorder_buffer[best][i], count[best][i]);
467
            }
468
            if(best==0){
469
                s->dsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
470
            }
471
        }
472
        s->m.first_slice_line=0;
473
    }
474
    return 0;
475
}
476

    
477
static av_cold int svq1_encode_init(AVCodecContext *avctx)
478
{
479
    SVQ1Context * const s = avctx->priv_data;
480

    
481
    dsputil_init(&s->dsp, avctx);
482
    avctx->coded_frame= (AVFrame*)&s->picture;
483

    
484
    s->frame_width = avctx->width;
485
    s->frame_height = avctx->height;
486

    
487
    s->y_block_width = (s->frame_width + 15) / 16;
488
    s->y_block_height = (s->frame_height + 15) / 16;
489

    
490
    s->c_block_width = (s->frame_width / 4 + 15) / 16;
491
    s->c_block_height = (s->frame_height / 4 + 15) / 16;
492

    
493
    s->avctx= avctx;
494
    s->m.avctx= avctx;
495
    s->m.me.temp      =
496
    s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
497
    s->m.me.map       = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
498
    s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
499
    s->mb_type        = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int16_t));
500
    s->dummy          = av_mallocz((s->y_block_width+1)*s->y_block_height*sizeof(int32_t));
501
    h263_encode_init(&s->m); //mv_penalty
502

    
503
    return 0;
504
}
505

    
506
static int svq1_encode_frame(AVCodecContext *avctx, unsigned char *buf,
507
    int buf_size, void *data)
508
{
509
    SVQ1Context * const s = avctx->priv_data;
510
    AVFrame *pict = data;
511
    AVFrame * const p= (AVFrame*)&s->picture;
512
    AVFrame temp;
513
    int i;
514

    
515
    if(avctx->pix_fmt != PIX_FMT_YUV410P){
516
        av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
517
        return -1;
518
    }
519

    
520
    if(!s->current_picture.data[0]){
521
        avctx->get_buffer(avctx, &s->current_picture);
522
        avctx->get_buffer(avctx, &s->last_picture);
523
        s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16);
524
    }
525

    
526
    temp= s->current_picture;
527
    s->current_picture= s->last_picture;
528
    s->last_picture= temp;
529

    
530
    init_put_bits(&s->pb, buf, buf_size);
531

    
532
    *p = *pict;
533
    p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ? FF_P_TYPE : FF_I_TYPE;
534
    p->key_frame = p->pict_type == FF_I_TYPE;
535

    
536
    svq1_write_header(s, p->pict_type);
537
    for(i=0; i<3; i++){
538
        if(svq1_encode_plane(s, i,
539
            s->picture.data[i], s->last_picture.data[i], s->current_picture.data[i],
540
            s->frame_width / (i?4:1), s->frame_height / (i?4:1),
541
            s->picture.linesize[i], s->current_picture.linesize[i]) < 0)
542
                return -1;
543
    }
544

    
545
//    align_put_bits(&s->pb);
546
    while(put_bits_count(&s->pb) & 31)
547
        put_bits(&s->pb, 1, 0);
548

    
549
    flush_put_bits(&s->pb);
550

    
551
    return put_bits_count(&s->pb) / 8;
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

    
573
    return 0;
574
}
575

    
576

    
577
AVCodec svq1_encoder = {
578
    "svq1",
579
    CODEC_TYPE_VIDEO,
580
    CODEC_ID_SVQ1,
581
    sizeof(SVQ1Context),
582
    svq1_encode_init,
583
    svq1_encode_frame,
584
    svq1_encode_end,
585
    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV410P, PIX_FMT_NONE},
586
    .long_name= NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
587
};