libspeex: allow custom sample rates again.
[ffmpeg.git] / 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 #include "avcodec.h"
30 #include "dsputil.h"
31 #include "mpegvideo.h"
32 #include "h263.h"
33 #include "internal.h"
34 #include "libavutil/avassert.h"
35 #include "svq1.h"
36 #include "svq1enc_cb.h"
37
38
39 typedef struct SVQ1Context {
40     /* FIXME: Needed for motion estimation, should not be used for anything
41      * else, the idea is to make the motion estimation eventually independent
42      * of MpegEncContext, so this will be removed then. */
43     MpegEncContext m;
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     /* why ooh why this sick breadth first order,
53      * everything is slower and more complex */
54     PutBitContext reorder_pb[6];
55
56     int frame_width;
57     int frame_height;
58
59     /* Y plane block dimensions */
60     int y_block_width;
61     int y_block_height;
62
63     /* U & V plane (C planes) block dimensions */
64     int c_block_width;
65     int c_block_height;
66
67     uint16_t *mb_type;
68     uint32_t *dummy;
69     int16_t (*motion_val8[3])[2];
70     int16_t (*motion_val16[3])[2];
71
72     int64_t rd_total;
73
74     uint8_t *scratchbuf;
75 } SVQ1Context;
76
77 static void svq1_write_header(SVQ1Context *s, int frame_type)
78 {
79     int i;
80
81     /* frame code */
82     put_bits(&s->pb, 22, 0x20);
83
84     /* temporal reference (sure hope this is a "don't care") */
85     put_bits(&s->pb, 8, 0x00);
86
87     /* frame type */
88     put_bits(&s->pb, 2, frame_type - 1);
89
90     if (frame_type == AV_PICTURE_TYPE_I) {
91         /* no checksum since frame code is 0x20 */
92         /* no embedded string either */
93         /* output 5 unknown bits (2 + 2 + 1) */
94         put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
95
96         i = ff_match_2uint16((void*)ff_svq1_frame_size_table,
97                              FF_ARRAY_ELEMS(ff_svq1_frame_size_table),
98                              s->frame_width, s->frame_height);
99         put_bits(&s->pb, 3, i);
100
101         if (i == 7) {
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 #define QUALITY_THRESHOLD    100
112 #define THRESHOLD_MULTIPLIER 0.6
113
114 static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref,
115                         uint8_t *decoded, int stride, int level,
116                         int threshold, int lambda, int intra)
117 {
118     int count, y, x, i, j, split, best_mean, best_score, best_count;
119     int best_vector[6];
120     int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
121     int w            = 2 << (level + 2 >> 1);
122     int h            = 2 << (level + 1 >> 1);
123     int size         = w * h;
124     int16_t block[7][256];
125     const int8_t *codebook_sum, *codebook;
126     const uint16_t(*mean_vlc)[2];
127     const uint8_t(*multistage_vlc)[2];
128
129     best_score = 0;
130     // FIXME: Optimize, this does not need to be done multiple times.
131     if (intra) {
132         codebook_sum   = svq1_intra_codebook_sum[level];
133         codebook       = ff_svq1_intra_codebooks[level];
134         mean_vlc       = ff_svq1_intra_mean_vlc;
135         multistage_vlc = ff_svq1_intra_multistage_vlc[level];
136         for (y = 0; y < h; y++) {
137             for (x = 0; x < w; x++) {
138                 int v = src[x + y * stride];
139                 block[0][x + w * y] = v;
140                 best_score         += v * v;
141                 block_sum[0]       += v;
142             }
143         }
144     } else {
145         codebook_sum   = svq1_inter_codebook_sum[level];
146         codebook       = ff_svq1_inter_codebooks[level];
147         mean_vlc       = ff_svq1_inter_mean_vlc + 256;
148         multistage_vlc = ff_svq1_inter_multistage_vlc[level];
149         for (y = 0; y < h; y++) {
150             for (x = 0; x < w; x++) {
151                 int v = src[x + y * stride] - ref[x + y * stride];
152                 block[0][x + w * y] = v;
153                 best_score         += v * v;
154                 block_sum[0]       += v;
155             }
156         }
157     }
158
159     best_count  = 0;
160     best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
161     best_mean   = block_sum[0] + (size >> 1) >> (level + 3);
162
163     if (level < 4) {
164         for (count = 1; count < 7; count++) {
165             int best_vector_score = INT_MAX;
166             int best_vector_sum   = -999, best_vector_mean = -999;
167             const int stage       = count - 1;
168             const int8_t *vector;
169
170             for (i = 0; i < 16; i++) {
171                 int sum = codebook_sum[stage * 16 + i];
172                 int sqr, diff, score;
173
174                 vector = codebook + stage * size * 16 + i * size;
175                 sqr    = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);
176                 diff   = block_sum[stage] - sum;
177                 score  = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64bit slooow
178                 if (score < best_vector_score) {
179                     int mean = diff + (size >> 1) >> (level + 3);
180                     av_assert2(mean > -300 && mean < 300);
181                     mean               = av_clip(mean, intra ? 0 : -256, 255);
182                     best_vector_score  = score;
183                     best_vector[stage] = i;
184                     best_vector_sum    = sum;
185                     best_vector_mean   = mean;
186                 }
187             }
188             av_assert0(best_vector_mean != -999);
189             vector = codebook + stage * size * 16 + best_vector[stage] * size;
190             for (j = 0; j < size; j++)
191                 block[stage + 1][j] = block[stage][j] - vector[j];
192             block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
193             best_vector_score   += lambda *
194                                    (+1 + 4 * count +
195                                     multistage_vlc[1 + count][1]
196                                     + mean_vlc[best_vector_mean][1]);
197
198             if (best_vector_score < best_score) {
199                 best_score = best_vector_score;
200                 best_count = count;
201                 best_mean  = best_vector_mean;
202             }
203         }
204     }
205
206     split = 0;
207     if (best_score > threshold && level) {
208         int score  = 0;
209         int offset = level & 1 ? stride * h / 2 : w / 2;
210         PutBitContext backup[6];
211
212         for (i = level - 1; i >= 0; i--)
213             backup[i] = s->reorder_pb[i];
214         score += encode_block(s, src, ref, decoded, stride, level - 1,
215                               threshold >> 1, lambda, intra);
216         score += encode_block(s, src + offset, ref + offset, decoded + offset,
217                               stride, level - 1, threshold >> 1, lambda, intra);
218         score += lambda;
219
220         if (score < best_score) {
221             best_score = score;
222             split      = 1;
223         } else {
224             for (i = level - 1; i >= 0; i--)
225                 s->reorder_pb[i] = backup[i];
226         }
227     }
228     if (level > 0)
229         put_bits(&s->reorder_pb[level], 1, split);
230
231     if (!split) {
232         av_assert1(best_mean >= 0 && best_mean < 256 || !intra);
233         av_assert1(best_mean >= -256 && best_mean < 256);
234         av_assert1(best_count >= 0 && best_count < 7);
235         av_assert1(level < 4 || best_count == 0);
236
237         /* output the encoding */
238         put_bits(&s->reorder_pb[level],
239                  multistage_vlc[1 + best_count][1],
240                  multistage_vlc[1 + best_count][0]);
241         put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
242                  mean_vlc[best_mean][0]);
243
244         for (i = 0; i < best_count; i++) {
245             av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);
246             put_bits(&s->reorder_pb[level], 4, best_vector[i]);
247         }
248
249         for (y = 0; y < h; y++)
250             for (x = 0; x < w; x++)
251                 decoded[x + y * stride] = src[x + y * stride] -
252                                           block[best_count][x + w * y] +
253                                           best_mean;
254     }
255
256     return best_score;
257 }
258
259 static int svq1_encode_plane(SVQ1Context *s, int plane,
260                              unsigned char *src_plane,
261                              unsigned char *ref_plane,
262                              unsigned char *decoded_plane,
263                              int width, int height, int src_stride, int stride)
264 {
265     int x, y;
266     int i;
267     int block_width, block_height;
268     int level;
269     int threshold[6];
270     uint8_t *src     = s->scratchbuf + stride * 16;
271     const int lambda = (s->picture.quality * s->picture.quality) >>
272                        (2 * FF_LAMBDA_SHIFT);
273
274     /* figure out the acceptable level thresholds in advance */
275     threshold[5] = QUALITY_THRESHOLD;
276     for (level = 4; level >= 0; level--)
277         threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
278
279     block_width  = (width  + 15) / 16;
280     block_height = (height + 15) / 16;
281
282     if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
283         s->m.avctx                         = s->avctx;
284         s->m.current_picture_ptr           = &s->m.current_picture;
285         s->m.last_picture_ptr              = &s->m.last_picture;
286         s->m.last_picture.f.data[0]        = ref_plane;
287         s->m.linesize                      =
288         s->m.last_picture.f.linesize[0]    =
289         s->m.new_picture.f.linesize[0]     =
290         s->m.current_picture.f.linesize[0] = stride;
291         s->m.width                         = width;
292         s->m.height                        = height;
293         s->m.mb_width                      = block_width;
294         s->m.mb_height                     = block_height;
295         s->m.mb_stride                     = s->m.mb_width + 1;
296         s->m.b8_stride                     = 2 * s->m.mb_width + 1;
297         s->m.f_code                        = 1;
298         s->m.pict_type                     = s->picture.pict_type;
299         s->m.me_method                     = s->avctx->me_method;
300         s->m.me.scene_change_score         = 0;
301         s->m.flags                         = s->avctx->flags;
302         // s->m.out_format                    = FMT_H263;
303         // s->m.unrestricted_mv               = 1;
304         s->m.lambda                        = s->picture.quality;
305         s->m.qscale                        = s->m.lambda * 139 +
306                                              FF_LAMBDA_SCALE * 64 >>
307                                              FF_LAMBDA_SHIFT + 7;
308         s->m.lambda2                       = s->m.lambda * s->m.lambda +
309                                              FF_LAMBDA_SCALE / 2 >>
310                                              FF_LAMBDA_SHIFT;
311
312         if (!s->motion_val8[plane]) {
313             s->motion_val8[plane]  = av_mallocz((s->m.b8_stride *
314                                                  block_height * 2 + 2) *
315                                                 2 * sizeof(int16_t));
316             s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
317                                                  (block_height + 2) + 1) *
318                                                 2 * sizeof(int16_t));
319         }
320
321         s->m.mb_type = s->mb_type;
322
323         // dummies, to avoid segfaults
324         s->m.current_picture.mb_mean   = (uint8_t *)s->dummy;
325         s->m.current_picture.mb_var    = (uint16_t *)s->dummy;
326         s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;
327         s->m.current_picture.f.mb_type = s->dummy;
328
329         s->m.current_picture.f.motion_val[0] = s->motion_val8[plane] + 2;
330         s->m.p_mv_table                      = s->motion_val16[plane] +
331                                                s->m.mb_stride + 1;
332         s->m.dsp                             = s->dsp; // move
333         ff_init_me(&s->m);
334
335         s->m.me.dia_size      = s->avctx->dia_size;
336         s->m.first_slice_line = 1;
337         for (y = 0; y < block_height; y++) {
338             s->m.new_picture.f.data[0] = src - y * 16 * stride; // ugly
339             s->m.mb_y                  = y;
340
341             for (i = 0; i < 16 && i + 16 * y < height; i++) {
342                 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
343                        width);
344                 for (x = width; x < 16 * block_width; x++)
345                     src[i * stride + x] = src[i * stride + x - 1];
346             }
347             for (; i < 16 && i + 16 * y < 16 * block_height; i++)
348                 memcpy(&src[i * stride], &src[(i - 1) * stride],
349                        16 * block_width);
350
351             for (x = 0; x < block_width; x++) {
352                 s->m.mb_x = x;
353                 ff_init_block_index(&s->m);
354                 ff_update_block_index(&s->m);
355
356                 ff_estimate_p_frame_motion(&s->m, x, y);
357             }
358             s->m.first_slice_line = 0;
359         }
360
361         ff_fix_long_p_mvs(&s->m);
362         ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,
363                         CANDIDATE_MB_TYPE_INTER, 0);
364     }
365
366     s->m.first_slice_line = 1;
367     for (y = 0; y < block_height; y++) {
368         for (i = 0; i < 16 && i + 16 * y < height; i++) {
369             memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
370                    width);
371             for (x = width; x < 16 * block_width; x++)
372                 src[i * stride + x] = src[i * stride + x - 1];
373         }
374         for (; i < 16 && i + 16 * y < 16 * block_height; i++)
375             memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
376
377         s->m.mb_y = y;
378         for (x = 0; x < block_width; x++) {
379             uint8_t reorder_buffer[3][6][7 * 32];
380             int count[3][6];
381             int offset       = y * 16 * stride + x * 16;
382             uint8_t *decoded = decoded_plane + offset;
383             uint8_t *ref     = ref_plane + offset;
384             int score[4]     = { 0, 0, 0, 0 }, best;
385             uint8_t *temp    = s->scratchbuf;
386
387             if (s->pb.buf_end - s->pb.buf -
388                 (put_bits_count(&s->pb) >> 3) < 3000) { // FIXME: check size
389                 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
390                 return -1;
391             }
392
393             s->m.mb_x = x;
394             ff_init_block_index(&s->m);
395             ff_update_block_index(&s->m);
396
397             if (s->picture.pict_type == AV_PICTURE_TYPE_I ||
398                 (s->m.mb_type[x + y * s->m.mb_stride] &
399                  CANDIDATE_MB_TYPE_INTRA)) {
400                 for (i = 0; i < 6; i++)
401                     init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
402                                   7 * 32);
403                 if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
404                     const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
405                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
406                     score[0] = vlc[1] * lambda;
407                 }
408                 score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
409                                          5, 64, lambda, 1);
410                 for (i = 0; i < 6; i++) {
411                     count[0][i] = put_bits_count(&s->reorder_pb[i]);
412                     flush_put_bits(&s->reorder_pb[i]);
413                 }
414             } else
415                 score[0] = INT_MAX;
416
417             best = 0;
418
419             if (s->picture.pict_type == AV_PICTURE_TYPE_P) {
420                 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
421                 int mx, my, pred_x, pred_y, dxy;
422                 int16_t *motion_ptr;
423
424                 motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
425                 if (s->m.mb_type[x + y * s->m.mb_stride] &
426                     CANDIDATE_MB_TYPE_INTER) {
427                     for (i = 0; i < 6; i++)
428                         init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
429                                       7 * 32);
430
431                     put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
432
433                     s->m.pb = s->reorder_pb[5];
434                     mx      = motion_ptr[0];
435                     my      = motion_ptr[1];
436                     av_assert1(mx     >= -32 && mx     <= 31);
437                     av_assert1(my     >= -32 && my     <= 31);
438                     av_assert1(pred_x >= -32 && pred_x <= 31);
439                     av_assert1(pred_y >= -32 && pred_y <= 31);
440                     ff_h263_encode_motion(&s->m, mx - pred_x, 1);
441                     ff_h263_encode_motion(&s->m, my - pred_y, 1);
442                     s->reorder_pb[5] = s->m.pb;
443                     score[1]        += lambda * put_bits_count(&s->reorder_pb[5]);
444
445                     dxy = (mx & 1) + 2 * (my & 1);
446
447                     s->dsp.put_pixels_tab[0][dxy](temp + 16,
448                                                   ref + (mx >> 1) +
449                                                   stride * (my >> 1),
450                                                   stride, 16);
451
452                     score[1] += encode_block(s, src + 16 * x, temp + 16,
453                                              decoded, stride, 5, 64, lambda, 0);
454                     best      = score[1] <= score[0];
455
456                     vlc       = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
457                     score[2]  = s->dsp.sse[0](NULL, src + 16 * x, ref,
458                                               stride, 16);
459                     score[2] += vlc[1] * lambda;
460                     if (score[2] < score[best] && mx == 0 && my == 0) {
461                         best = 2;
462                         s->dsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
463                         for (i = 0; i < 6; i++)
464                             count[2][i] = 0;
465                         put_bits(&s->pb, vlc[1], vlc[0]);
466                     }
467                 }
468
469                 if (best == 1) {
470                     for (i = 0; i < 6; i++) {
471                         count[1][i] = put_bits_count(&s->reorder_pb[i]);
472                         flush_put_bits(&s->reorder_pb[i]);
473                     }
474                 } else {
475                     motion_ptr[0]                      =
476                     motion_ptr[1]                      =
477                     motion_ptr[2]                      =
478                     motion_ptr[3]                      =
479                     motion_ptr[0 + 2 * s->m.b8_stride] =
480                     motion_ptr[1 + 2 * s->m.b8_stride] =
481                     motion_ptr[2 + 2 * s->m.b8_stride] =
482                     motion_ptr[3 + 2 * s->m.b8_stride] = 0;
483                 }
484             }
485
486             s->rd_total += score[best];
487
488             for (i = 5; i >= 0; i--)
489                 avpriv_copy_bits(&s->pb, reorder_buffer[best][i],
490                                  count[best][i]);
491             if (best == 0)
492                 s->dsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
493         }
494         s->m.first_slice_line = 0;
495     }
496     return 0;
497 }
498
499 static av_cold int svq1_encode_init(AVCodecContext *avctx)
500 {
501     SVQ1Context *const s = avctx->priv_data;
502
503     ff_dsputil_init(&s->dsp, avctx);
504     avctx->coded_frame = &s->picture;
505
506     s->frame_width  = avctx->width;
507     s->frame_height = avctx->height;
508
509     s->y_block_width  = (s->frame_width  + 15) / 16;
510     s->y_block_height = (s->frame_height + 15) / 16;
511
512     s->c_block_width  = (s->frame_width  / 4 + 15) / 16;
513     s->c_block_height = (s->frame_height / 4 + 15) / 16;
514
515     s->avctx               = avctx;
516     s->m.avctx             = avctx;
517     s->m.picture_structure = PICT_FRAME;
518     s->m.me.temp           =
519     s->m.me.scratchpad     = av_mallocz((avctx->width + 64) *
520                                         2 * 16 * 2 * sizeof(uint8_t));
521     s->m.me.map            = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
522     s->m.me.score_map      = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
523     s->mb_type             = av_mallocz((s->y_block_width + 1) *
524                                         s->y_block_height * sizeof(int16_t));
525     s->dummy               = av_mallocz((s->y_block_width + 1) *
526                                         s->y_block_height * sizeof(int32_t));
527     ff_h263_encode_init(&s->m); // mv_penalty
528
529     return 0;
530 }
531
532 static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
533                              const AVFrame *pict, int *got_packet)
534 {
535     SVQ1Context *const s = avctx->priv_data;
536     AVFrame *const p     = &s->picture;
537     AVFrame temp;
538     int i, ret;
539
540     if ((ret = ff_alloc_packet2(avctx, pkt, s->y_block_width * s->y_block_height *
541                              MAX_MB_BYTES*3 + FF_MIN_BUFFER_SIZE) < 0))
542         return ret;
543
544     if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {
545         av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
546         return -1;
547     }
548
549     if (!s->current_picture.data[0]) {
550         avctx->get_buffer(avctx, &s->current_picture);
551         avctx->get_buffer(avctx, &s->last_picture);
552         s->scratchbuf = av_malloc(s->current_picture.linesize[0] * 16 * 2);
553     }
554
555     temp               = s->current_picture;
556     s->current_picture = s->last_picture;
557     s->last_picture    = temp;
558
559     init_put_bits(&s->pb, pkt->data, pkt->size);
560
561     *p           = *pict;
562     p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ?
563                    AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
564     p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;
565
566     svq1_write_header(s, p->pict_type);
567     for (i = 0; i < 3; i++)
568         if (svq1_encode_plane(s, i,
569                               s->picture.data[i],
570                               s->last_picture.data[i],
571                               s->current_picture.data[i],
572                               s->frame_width  / (i ? 4 : 1),
573                               s->frame_height / (i ? 4 : 1),
574                               s->picture.linesize[i],
575                               s->current_picture.linesize[i]) < 0)
576             return -1;
577
578     // avpriv_align_put_bits(&s->pb);
579     while (put_bits_count(&s->pb) & 31)
580         put_bits(&s->pb, 1, 0);
581
582     flush_put_bits(&s->pb);
583
584     pkt->size = put_bits_count(&s->pb) / 8;
585     if (p->pict_type == AV_PICTURE_TYPE_I)
586         pkt->flags |= AV_PKT_FLAG_KEY;
587     *got_packet = 1;
588
589     return 0;
590 }
591
592 static av_cold int svq1_encode_end(AVCodecContext *avctx)
593 {
594     SVQ1Context *const s = avctx->priv_data;
595     int i;
596
597     av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
598            s->rd_total / (double)(avctx->width * avctx->height *
599                                   avctx->frame_number));
600
601     av_freep(&s->m.me.scratchpad);
602     av_freep(&s->m.me.map);
603     av_freep(&s->m.me.score_map);
604     av_freep(&s->mb_type);
605     av_freep(&s->dummy);
606     av_freep(&s->scratchbuf);
607
608     for (i = 0; i < 3; i++) {
609         av_freep(&s->motion_val8[i]);
610         av_freep(&s->motion_val16[i]);
611     }
612     if(s->current_picture.data[0])
613         avctx->release_buffer(avctx, &s->current_picture);
614     if(s->last_picture.data[0])
615         avctx->release_buffer(avctx, &s->last_picture);
616
617     return 0;
618 }
619
620 AVCodec ff_svq1_encoder = {
621     .name           = "svq1",
622     .type           = AVMEDIA_TYPE_VIDEO,
623     .id             = AV_CODEC_ID_SVQ1,
624     .priv_data_size = sizeof(SVQ1Context),
625     .init           = svq1_encode_init,
626     .encode2        = svq1_encode_frame,
627     .close          = svq1_encode_end,
628     .pix_fmts       = (const enum PixelFormat[]) { AV_PIX_FMT_YUV410P,
629                                                    AV_PIX_FMT_NONE },
630     .long_name      = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
631 };