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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 "hpeldsp.h"
31#include "me_cmp.h"
32#include "mpegvideo.h"
33#include "h263.h"
34#include "internal.h"
35#include "mpegutils.h"
36#include "svq1.h"
37#include "svq1enc.h"
38#include "svq1enc_cb.h"
39#include "libavutil/avassert.h"
40
41
42static void svq1_write_header(SVQ1EncContext *s, int frame_type)
43{
44 int i;
45
46 /* frame code */
47 put_bits(&s->pb, 22, 0x20);
48
49 /* temporal reference (sure hope this is a "don't care") */
50 put_bits(&s->pb, 8, 0x00);
51
52 /* frame type */
53 put_bits(&s->pb, 2, frame_type - 1);
54
55 if (frame_type == AV_PICTURE_TYPE_I) {
56 /* no checksum since frame code is 0x20 */
57 /* no embedded string either */
58 /* output 5 unknown bits (2 + 2 + 1) */
59 put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
60
61 i = ff_match_2uint16((void*)ff_svq1_frame_size_table,
62 FF_ARRAY_ELEMS(ff_svq1_frame_size_table),
63 s->frame_width, s->frame_height);
64 put_bits(&s->pb, 3, i);
65
66 if (i == 7) {
67 put_bits(&s->pb, 12, s->frame_width);
68 put_bits(&s->pb, 12, s->frame_height);
69 }
70 }
71
72 /* no checksum or extra data (next 2 bits get 0) */
73 put_bits(&s->pb, 2, 0);
74}
75
76#define QUALITY_THRESHOLD 100
77#define THRESHOLD_MULTIPLIER 0.6
78
79static int ssd_int8_vs_int16_c(const int8_t *pix1, const int16_t *pix2,
80 intptr_t size)
81{
82 int score = 0, i;
83
84 for (i = 0; i < size; i++)
85 score += (pix1[i] - pix2[i]) * (pix1[i] - pix2[i]);
86 return score;
87}
88
89static int encode_block(SVQ1EncContext *s, uint8_t *src, uint8_t *ref,
90 uint8_t *decoded, int stride, int level,
91 int threshold, int lambda, int intra)
92{
93 int count, y, x, i, j, split, best_mean, best_score, best_count;
94 int best_vector[6];
95 int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
96 int w = 2 << (level + 2 >> 1);
97 int h = 2 << (level + 1 >> 1);
98 int size = w * h;
99 int16_t (*block)[256] = s->encoded_block_levels[level];
100 const int8_t *codebook_sum, *codebook;
101 const uint16_t(*mean_vlc)[2];
102 const uint8_t(*multistage_vlc)[2];
103
104 best_score = 0;
105 // FIXME: Optimize, this does not need to be done multiple times.
106 if (intra) {
107 // level is 5 when encode_block is called from svq1_encode_plane
108 // and always < 4 when called recursively from this function.
109 codebook_sum = level < 4 ? svq1_intra_codebook_sum[level] : NULL;
110 codebook = ff_svq1_intra_codebooks[level];
111 mean_vlc = ff_svq1_intra_mean_vlc;
112 multistage_vlc = ff_svq1_intra_multistage_vlc[level];
113 for (y = 0; y < h; y++) {
114 for (x = 0; x < w; x++) {
115 int v = src[x + y * stride];
116 block[0][x + w * y] = v;
117 best_score += v * v;
118 block_sum[0] += v;
119 }
120 }
121 } else {
122 // level is 5 or < 4, see above for details.
123 codebook_sum = level < 4 ? svq1_inter_codebook_sum[level] : NULL;
124 codebook = ff_svq1_inter_codebooks[level];
125 mean_vlc = ff_svq1_inter_mean_vlc + 256;
126 multistage_vlc = ff_svq1_inter_multistage_vlc[level];
127 for (y = 0; y < h; y++) {
128 for (x = 0; x < w; x++) {
129 int v = src[x + y * stride] - ref[x + y * stride];
130 block[0][x + w * y] = v;
131 best_score += v * v;
132 block_sum[0] += v;
133 }
134 }
135 }
136
137 best_count = 0;
138 best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
139 best_mean = block_sum[0] + (size >> 1) >> (level + 3);
140
141 if (level < 4) {
142 for (count = 1; count < 7; count++) {
143 int best_vector_score = INT_MAX;
144 int best_vector_sum = -999, best_vector_mean = -999;
145 const int stage = count - 1;
146 const int8_t *vector;
147
148 for (i = 0; i < 16; i++) {
149 int sum = codebook_sum[stage * 16 + i];
150 int sqr, diff, score;
151
152 vector = codebook + stage * size * 16 + i * size;
153 sqr = s->ssd_int8_vs_int16(vector, block[stage], size);
154 diff = block_sum[stage] - sum;
155 score = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64 bits slooow
156 if (score < best_vector_score) {
157 int mean = diff + (size >> 1) >> (level + 3);
158 av_assert2(mean > -300 && mean < 300);
159 mean = av_clip(mean, intra ? 0 : -256, 255);
160 best_vector_score = score;
161 best_vector[stage] = i;
162 best_vector_sum = sum;
163 best_vector_mean = mean;
164 }
165 }
166 av_assert0(best_vector_mean != -999);
167 vector = codebook + stage * size * 16 + best_vector[stage] * size;
168 for (j = 0; j < size; j++)
169 block[stage + 1][j] = block[stage][j] - vector[j];
170 block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
171 best_vector_score += lambda *
172 (+1 + 4 * count +
173 multistage_vlc[1 + count][1]
174 + mean_vlc[best_vector_mean][1]);
175
176 if (best_vector_score < best_score) {
177 best_score = best_vector_score;
178 best_count = count;
179 best_mean = best_vector_mean;
180 }
181 }
182 }
183
184 split = 0;
185 if (best_score > threshold && level) {
186 int score = 0;
187 int offset = level & 1 ? stride * h / 2 : w / 2;
188 PutBitContext backup[6];
189
190 for (i = level - 1; i >= 0; i--)
191 backup[i] = s->reorder_pb[i];
192 score += encode_block(s, src, ref, decoded, stride, level - 1,
193 threshold >> 1, lambda, intra);
194 score += encode_block(s, src + offset, ref + offset, decoded + offset,
195 stride, level - 1, threshold >> 1, lambda, intra);
196 score += lambda;
197
198 if (score < best_score) {
199 best_score = score;
200 split = 1;
201 } else {
202 for (i = level - 1; i >= 0; i--)
203 s->reorder_pb[i] = backup[i];
204 }
205 }
206 if (level > 0)
207 put_bits(&s->reorder_pb[level], 1, split);
208
209 if (!split) {
210 av_assert1(best_mean >= 0 && best_mean < 256 || !intra);
211 av_assert1(best_mean >= -256 && best_mean < 256);
212 av_assert1(best_count >= 0 && best_count < 7);
213 av_assert1(level < 4 || best_count == 0);
214
215 /* output the encoding */
216 put_bits(&s->reorder_pb[level],
217 multistage_vlc[1 + best_count][1],
218 multistage_vlc[1 + best_count][0]);
219 put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
220 mean_vlc[best_mean][0]);
221
222 for (i = 0; i < best_count; i++) {
223 av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);
224 put_bits(&s->reorder_pb[level], 4, best_vector[i]);
225 }
226
227 for (y = 0; y < h; y++)
228 for (x = 0; x < w; x++)
229 decoded[x + y * stride] = src[x + y * stride] -
230 block[best_count][x + w * y] +
231 best_mean;
232 }
233
234 return best_score;
235}
236
237static void init_block_index(MpegEncContext *s){
238 s->block_index[0]= s->b8_stride*(s->mb_y*2 ) + s->mb_x*2;
239 s->block_index[1]= s->b8_stride*(s->mb_y*2 ) + 1 + s->mb_x*2;
240 s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) + s->mb_x*2;
241 s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) + 1 + s->mb_x*2;
242 s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x;
243 s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x;
244}
245
246static int svq1_encode_plane(SVQ1EncContext *s, int plane,
247 unsigned char *src_plane,
248 unsigned char *ref_plane,
249 unsigned char *decoded_plane,
250 int width, int height, int src_stride, int stride)
251{
252 int x, y;
253 int i;
254 int block_width, block_height;
255 int level;
256 int threshold[6];
257 uint8_t *src = s->scratchbuf + stride * 32;
258 const int lambda = (s->quality * s->quality) >>
259 (2 * FF_LAMBDA_SHIFT);
260
261 /* figure out the acceptable level thresholds in advance */
262 threshold[5] = QUALITY_THRESHOLD;
263 for (level = 4; level >= 0; level--)
264 threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
265
266 block_width = (width + 15) / 16;
267 block_height = (height + 15) / 16;
268
269 if (s->pict_type == AV_PICTURE_TYPE_P) {
270 s->m.avctx = s->avctx;
271 s->m.current_picture_ptr = &s->m.current_picture;
272 s->m.last_picture_ptr = &s->m.last_picture;
273 s->m.last_picture.f->data[0] = ref_plane;
274 s->m.linesize =
275 s->m.last_picture.f->linesize[0] =
276 s->m.new_picture.f->linesize[0] =
277 s->m.current_picture.f->linesize[0] = stride;
278 s->m.width = width;
279 s->m.height = height;
280 s->m.mb_width = block_width;
281 s->m.mb_height = block_height;
282 s->m.mb_stride = s->m.mb_width + 1;
283 s->m.b8_stride = 2 * s->m.mb_width + 1;
284 s->m.f_code = 1;
285 s->m.pict_type = s->pict_type;
286#if FF_API_MOTION_EST
287FF_DISABLE_DEPRECATION_WARNINGS
288 s->m.me_method = s->avctx->me_method;
289 if (s->motion_est == FF_ME_EPZS) {
290 if (s->avctx->me_method == ME_ZERO)
291 s->motion_est = FF_ME_ZERO;
292 else if (s->avctx->me_method == ME_EPZS)
293 s->motion_est = FF_ME_EPZS;
294 else if (s->avctx->me_method == ME_X1)
295 s->motion_est = FF_ME_XONE;
296 }
297FF_ENABLE_DEPRECATION_WARNINGS
298#endif
299 s->m.motion_est = s->motion_est;
300 s->m.me.scene_change_score = 0;
301 // s->m.out_format = FMT_H263;
302 // s->m.unrestricted_mv = 1;
303 s->m.lambda = s->quality;
304 s->m.qscale = s->m.lambda * 139 +
305 FF_LAMBDA_SCALE * 64 >>
306 FF_LAMBDA_SHIFT + 7;
307 s->m.lambda2 = s->m.lambda * s->m.lambda +
308 FF_LAMBDA_SCALE / 2 >>
309 FF_LAMBDA_SHIFT;
310
311 if (!s->motion_val8[plane]) {
312 s->motion_val8[plane] = av_mallocz((s->m.b8_stride *
313 block_height * 2 + 2) *
314 2 * sizeof(int16_t));
315 s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
316 (block_height + 2) + 1) *
317 2 * sizeof(int16_t));
318 if (!s->motion_val8[plane] || !s->motion_val16[plane])
319 return AVERROR(ENOMEM);
320 }
321
322 s->m.mb_type = s->mb_type;
323
324 // dummies, to avoid segfaults
325 s->m.current_picture.mb_mean = (uint8_t *)s->dummy;
326 s->m.current_picture.mb_var = (uint16_t *)s->dummy;
327 s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;
328 s->m.current_picture.mb_type = s->dummy;
329
330 s->m.current_picture.motion_val[0] = s->motion_val8[plane] + 2;
331 s->m.p_mv_table = s->motion_val16[plane] +
332 s->m.mb_stride + 1;
333 s->m.mecc = s->mecc; // move
334 ff_init_me(&s->m);
335
336 s->m.me.dia_size = s->avctx->dia_size;
337 s->m.first_slice_line = 1;
338 for (y = 0; y < block_height; y++) {
339 s->m.new_picture.f->data[0] = src - y * 16 * stride; // ugly
340 s->m.mb_y = y;
341
342 for (i = 0; i < 16 && i + 16 * y < height; i++) {
343 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
344 width);
345 for (x = width; x < 16 * block_width; x++)
346 src[i * stride + x] = src[i * stride + x - 1];
347 }
348 for (; i < 16 && i + 16 * y < 16 * block_height; i++)
349 memcpy(&src[i * stride], &src[(i - 1) * stride],
350 16 * block_width);
351
352 for (x = 0; x < block_width; x++) {
353 s->m.mb_x = x;
354 init_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[2][6][7 * 32];
380 int count[2][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 init_block_index(&s->m);
395
396 if (s->pict_type == AV_PICTURE_TYPE_I ||
397 (s->m.mb_type[x + y * s->m.mb_stride] &
398 CANDIDATE_MB_TYPE_INTRA)) {
399 for (i = 0; i < 6; i++)
400 init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
401 7 * 32);
402 if (s->pict_type == AV_PICTURE_TYPE_P) {
403 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
404 put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
405 score[0] = vlc[1] * lambda;
406 }
407 score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
408 5, 64, lambda, 1);
409 for (i = 0; i < 6; i++) {
410 count[0][i] = put_bits_count(&s->reorder_pb[i]);
411 flush_put_bits(&s->reorder_pb[i]);
412 }
413 } else
414 score[0] = INT_MAX;
415
416 best = 0;
417
418 if (s->pict_type == AV_PICTURE_TYPE_P) {
419 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
420 int mx, my, pred_x, pred_y, dxy;
421 int16_t *motion_ptr;
422
423 motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
424 if (s->m.mb_type[x + y * s->m.mb_stride] &
425 CANDIDATE_MB_TYPE_INTER) {
426 for (i = 0; i < 6; i++)
427 init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
428 7 * 32);
429
430 put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
431
432 s->m.pb = s->reorder_pb[5];
433 mx = motion_ptr[0];
434 my = motion_ptr[1];
435 av_assert1(mx >= -32 && mx <= 31);
436 av_assert1(my >= -32 && my <= 31);
437 av_assert1(pred_x >= -32 && pred_x <= 31);
438 av_assert1(pred_y >= -32 && pred_y <= 31);
439 ff_h263_encode_motion(&s->m.pb, mx - pred_x, 1);
440 ff_h263_encode_motion(&s->m.pb, my - pred_y, 1);
441 s->reorder_pb[5] = s->m.pb;
442 score[1] += lambda * put_bits_count(&s->reorder_pb[5]);
443
444 dxy = (mx & 1) + 2 * (my & 1);
445
446 s->hdsp.put_pixels_tab[0][dxy](temp + 16*stride,
447 ref + (mx >> 1) +
448 stride * (my >> 1),
449 stride, 16);
450
451 score[1] += encode_block(s, src + 16 * x, temp + 16*stride,
452 decoded, stride, 5, 64, lambda, 0);
453 best = score[1] <= score[0];
454
455 vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
456 score[2] = s->mecc.sse[0](NULL, src + 16 * x, ref,
457 stride, 16);
458 score[2] += vlc[1] * lambda;
459 if (score[2] < score[best] && mx == 0 && my == 0) {
460 best = 2;
461 s->hdsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
462 put_bits(&s->pb, vlc[1], vlc[0]);
463 }
464 }
465
466 if (best == 1) {
467 for (i = 0; i < 6; i++) {
468 count[1][i] = put_bits_count(&s->reorder_pb[i]);
469 flush_put_bits(&s->reorder_pb[i]);
470 }
471 } else {
472 motion_ptr[0] =
473 motion_ptr[1] =
474 motion_ptr[2] =
475 motion_ptr[3] =
476 motion_ptr[0 + 2 * s->m.b8_stride] =
477 motion_ptr[1 + 2 * s->m.b8_stride] =
478 motion_ptr[2 + 2 * s->m.b8_stride] =
479 motion_ptr[3 + 2 * s->m.b8_stride] = 0;
480 }
481 }
482
483 s->rd_total += score[best];
484
485 if (best != 2)
486 for (i = 5; i >= 0; i--)
487 avpriv_copy_bits(&s->pb, reorder_buffer[best][i],
488 count[best][i]);
489 if (best == 0)
490 s->hdsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
491 }
492 s->m.first_slice_line = 0;
493 }
494 return 0;
495}
496
497static av_cold int svq1_encode_end(AVCodecContext *avctx)
498{
499 SVQ1EncContext *const s = avctx->priv_data;
500 int i;
501
502 av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
503 s->rd_total / (double)(avctx->width * avctx->height *
504 avctx->frame_number));
505
506 s->m.mb_type = NULL;
507 ff_mpv_common_end(&s->m);
508
509 av_freep(&s->m.me.scratchpad);
510 av_freep(&s->m.me.map);
511 av_freep(&s->m.me.score_map);
512 av_freep(&s->mb_type);
513 av_freep(&s->dummy);
514 av_freep(&s->scratchbuf);
515
516 for (i = 0; i < 3; i++) {
517 av_freep(&s->motion_val8[i]);
518 av_freep(&s->motion_val16[i]);
519 }
520
521 av_frame_free(&s->current_picture);
522 av_frame_free(&s->last_picture);
523
524 return 0;
525}
526
527static av_cold int svq1_encode_init(AVCodecContext *avctx)
528{
529 SVQ1EncContext *const s = avctx->priv_data;
530 int ret;
531
532 if (avctx->width >= 4096 || avctx->height >= 4096) {
533 av_log(avctx, AV_LOG_ERROR, "Dimensions too large, maximum is 4095x4095\n");
534 return AVERROR(EINVAL);
535 }
536
537 ff_hpeldsp_init(&s->hdsp, avctx->flags);
538 ff_me_cmp_init(&s->mecc, avctx);
539 ff_mpegvideoencdsp_init(&s->m.mpvencdsp, avctx);
540
541 s->current_picture = av_frame_alloc();
542 s->last_picture = av_frame_alloc();
543 if (!s->current_picture || !s->last_picture) {
544 svq1_encode_end(avctx);
545 return AVERROR(ENOMEM);
546 }
547
548 s->frame_width = avctx->width;
549 s->frame_height = avctx->height;
550
551 s->y_block_width = (s->frame_width + 15) / 16;
552 s->y_block_height = (s->frame_height + 15) / 16;
553
554 s->c_block_width = (s->frame_width / 4 + 15) / 16;
555 s->c_block_height = (s->frame_height / 4 + 15) / 16;
556
557 s->avctx = avctx;
558 s->m.avctx = avctx;
559
560 if ((ret = ff_mpv_common_init(&s->m)) < 0) {
561 svq1_encode_end(avctx);
562 return ret;
563 }
564
565 s->m.picture_structure = PICT_FRAME;
566 s->m.me.temp =
567 s->m.me.scratchpad = av_mallocz((avctx->width + 64) *
568 2 * 16 * 2 * sizeof(uint8_t));
569 s->m.me.map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
570 s->m.me.score_map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
571 s->mb_type = av_mallocz((s->y_block_width + 1) *
572 s->y_block_height * sizeof(int16_t));
573 s->dummy = av_mallocz((s->y_block_width + 1) *
574 s->y_block_height * sizeof(int32_t));
575 s->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
576
577 if (!s->m.me.temp || !s->m.me.scratchpad || !s->m.me.map ||
578 !s->m.me.score_map || !s->mb_type || !s->dummy) {
579 svq1_encode_end(avctx);
580 return AVERROR(ENOMEM);
581 }
582
583 if (ARCH_PPC)
584 ff_svq1enc_init_ppc(s);
585 if (ARCH_X86)
586 ff_svq1enc_init_x86(s);
587
588 ff_h263_encode_init(&s->m); // mv_penalty
589
590 return 0;
591}
592
593static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
594 const AVFrame *pict, int *got_packet)
595{
596 SVQ1EncContext *const s = avctx->priv_data;
597 int i, ret;
598
599 if ((ret = ff_alloc_packet2(avctx, pkt, s->y_block_width * s->y_block_height *
600 MAX_MB_BYTES*3 + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0)
601 return ret;
602
603 if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {
604 av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
605 return -1;
606 }
607
608 if (!s->current_picture->data[0]) {
609 if ((ret = ff_get_buffer(avctx, s->current_picture, 0)) < 0) {
610 return ret;
611 }
612 }
613 if (!s->last_picture->data[0]) {
614 ret = ff_get_buffer(avctx, s->last_picture, 0);
615 if (ret < 0)
616 return ret;
617 }
618 if (!s->scratchbuf) {
619 s->scratchbuf = av_malloc_array(s->current_picture->linesize[0], 16 * 3);
620 if (!s->scratchbuf)
621 return AVERROR(ENOMEM);
622 }
623
624 FFSWAP(AVFrame*, s->current_picture, s->last_picture);
625
626 init_put_bits(&s->pb, pkt->data, pkt->size);
627
628 if (avctx->gop_size && (avctx->frame_number % avctx->gop_size))
629 s->pict_type = AV_PICTURE_TYPE_P;
630 else
631 s->pict_type = AV_PICTURE_TYPE_I;
632 s->quality = pict->quality;
633
634#if FF_API_CODED_FRAME
635FF_DISABLE_DEPRECATION_WARNINGS
636 avctx->coded_frame->pict_type = s->pict_type;
637 avctx->coded_frame->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
638FF_ENABLE_DEPRECATION_WARNINGS
639#endif
640
641 ff_side_data_set_encoder_stats(pkt, pict->quality, NULL, 0, s->pict_type);
642
643 svq1_write_header(s, s->pict_type);
644 for (i = 0; i < 3; i++) {
645 int ret = svq1_encode_plane(s, i,
646 pict->data[i],
647 s->last_picture->data[i],
648 s->current_picture->data[i],
649 s->frame_width / (i ? 4 : 1),
650 s->frame_height / (i ? 4 : 1),
651 pict->linesize[i],
652 s->current_picture->linesize[i]);
653 emms_c();
654 if (ret < 0) {
655 int j;
656 for (j = 0; j < i; j++) {
657 av_freep(&s->motion_val8[j]);
658 av_freep(&s->motion_val16[j]);
659 }
660 av_freep(&s->scratchbuf);
661 return -1;
662 }
663 }
664
665 // avpriv_align_put_bits(&s->pb);
666 while (put_bits_count(&s->pb) & 31)
667 put_bits(&s->pb, 1, 0);
668
669 flush_put_bits(&s->pb);
670
671 pkt->size = put_bits_count(&s->pb) / 8;
672 if (s->pict_type == AV_PICTURE_TYPE_I)
673 pkt->flags |= AV_PKT_FLAG_KEY;
674 *got_packet = 1;
675
676 return 0;
677}
678
679#define OFFSET(x) offsetof(struct SVQ1EncContext, x)
680#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
681static const AVOption options[] = {
682 { "motion-est", "Motion estimation algorithm", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, VE, "motion-est"},
683 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
684 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
685 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
686
687 { NULL },
688};
689
690static const AVClass svq1enc_class = {
691 .class_name = "svq1enc",
692 .item_name = av_default_item_name,
693 .option = options,
694 .version = LIBAVUTIL_VERSION_INT,
695};
696
697AVCodec ff_svq1_encoder = {
698 .name = "svq1",
699 .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
700 .type = AVMEDIA_TYPE_VIDEO,
701 .id = AV_CODEC_ID_SVQ1,
702 .priv_data_size = sizeof(SVQ1EncContext),
703 .priv_class = &svq1enc_class,
704 .init = svq1_encode_init,
705 .encode2 = svq1_encode_frame,
706 .close = svq1_encode_end,
707 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
708 AV_PIX_FMT_NONE },
709};
710
generated by cgit at 2024-05-17 04:42:29 (GMT)