FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/svq1enc.c
Date: 2021-09-23 20:34:37
Exec Total Coverage
Lines: 358 377 95.0%
Branches: 163 190 85.8%

Line Branch Exec Source
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 "encode.h"
31 #include "hpeldsp.h"
32 #include "me_cmp.h"
33 #include "mpegvideo.h"
34 #include "h263.h"
35 #include "internal.h"
36 #include "mpegutils.h"
37 #include "packet_internal.h"
38 #include "svq1.h"
39 #include "svq1enc.h"
40 #include "svq1enc_cb.h"
41 #include "libavutil/avassert.h"
42
43
44 200 static void svq1_write_header(SVQ1EncContext *s, int frame_type)
45 {
46 int i;
47
48 /* frame code */
49 200 put_bits(&s->pb, 22, 0x20);
50
51 /* temporal reference (sure hope this is a "don't care") */
52 200 put_bits(&s->pb, 8, 0x00);
53
54 /* frame type */
55 200 put_bits(&s->pb, 2, frame_type - 1);
56
57
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200 if (frame_type == AV_PICTURE_TYPE_I) {
58 /* no checksum since frame code is 0x20 */
59 /* no embedded string either */
60 /* output 5 unknown bits (2 + 2 + 1) */
61 20 put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
62
63 20 i = ff_match_2uint16((void*)ff_svq1_frame_size_table,
64 FF_ARRAY_ELEMS(ff_svq1_frame_size_table),
65 s->frame_width, s->frame_height);
66 20 put_bits(&s->pb, 3, i);
67
68
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20 if (i == 7) {
69 5 put_bits(&s->pb, 12, s->frame_width);
70 5 put_bits(&s->pb, 12, s->frame_height);
71 }
72 }
73
74 /* no checksum or extra data (next 2 bits get 0) */
75 200 put_bits(&s->pb, 2, 0);
76 200 }
77
78 #define QUALITY_THRESHOLD 100
79 #define THRESHOLD_MULTIPLIER 0.6
80
81 393187392 static int ssd_int8_vs_int16_c(const int8_t *pix1, const int16_t *pix2,
82 intptr_t size)
83 {
84 393187392 int score = 0, i;
85
86
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7128095808 for (i = 0; i < size; i++)
87 6734908416 score += (pix1[i] - pix2[i]) * (pix1[i] - pix2[i]);
88 393187392 return score;
89 }
90
91 4302520 static int encode_block(SVQ1EncContext *s, uint8_t *src, uint8_t *ref,
92 uint8_t *decoded, int stride, int level,
93 int threshold, int lambda, int intra)
94 {
95 int count, y, x, i, j, split, best_mean, best_score, best_count;
96 int best_vector[6];
97 4302520 int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
98 4302520 int w = 2 << (level + 2 >> 1);
99 4302520 int h = 2 << (level + 1 >> 1);
100 4302520 int size = w * h;
101 4302520 int16_t (*block)[256] = s->encoded_block_levels[level];
102 const int8_t *codebook_sum, *codebook;
103 const uint16_t(*mean_vlc)[2];
104 const uint8_t(*multistage_vlc)[2];
105
106 4302520 best_score = 0;
107 // FIXME: Optimize, this does not need to be done multiple times.
108
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4302520 if (intra) {
109 // level is 5 when encode_block is called from svq1_encode_plane
110 // and always < 4 when called recursively from this function.
111
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643967 codebook_sum = level < 4 ? svq1_intra_codebook_sum[level] : NULL;
112 643967 codebook = ff_svq1_intra_codebooks[level];
113 643967 mean_vlc = ff_svq1_intra_mean_vlc;
114 643967 multistage_vlc = ff_svq1_intra_multistage_vlc[level];
115
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2941539 for (y = 0; y < h; y++) {
116
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18101876 for (x = 0; x < w; x++) {
117 15804304 int v = src[x + y * stride];
118 15804304 block[0][x + w * y] = v;
119 15804304 best_score += v * v;
120 15804304 block_sum[0] += v;
121 }
122 }
123 } else {
124 // level is 5 or < 4, see above for details.
125
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3658553 codebook_sum = level < 4 ? svq1_inter_codebook_sum[level] : NULL;
126 3658553 codebook = ff_svq1_inter_codebooks[level];
127 3658553 mean_vlc = ff_svq1_inter_mean_vlc + 256;
128 3658553 multistage_vlc = ff_svq1_inter_multistage_vlc[level];
129
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130
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102693156 for (x = 0; x < w; x++) {
131 89649296 int v = src[x + y * stride] - ref[x + y * stride];
132 89649296 block[0][x + w * y] = v;
133 89649296 best_score += v * v;
134 89649296 block_sum[0] += v;
135 }
136 }
137 }
138
139 4302520 best_count = 0;
140 4302520 best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
141 4302520 best_mean = block_sum[0] + (size >> 1) >> (level + 3);
142
143
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4302520 if (level < 4) {
144
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28669914 for (count = 1; count < 7; count++) {
145 24574212 int best_vector_score = INT_MAX;
146 24574212 int best_vector_sum = -999, best_vector_mean = -999;
147 24574212 const int stage = count - 1;
148 const int8_t *vector;
149
150
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417761604 for (i = 0; i < 16; i++) {
151 393187392 int sum = codebook_sum[stage * 16 + i];
152 int sqr, diff, score;
153
154 393187392 vector = codebook + stage * size * 16 + i * size;
155 393187392 sqr = s->ssd_int8_vs_int16(vector, block[stage], size);
156 393187392 diff = block_sum[stage] - sum;
157 393187392 score = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64 bits slooow
158
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393187392 if (score < best_vector_score) {
159 65429340 int mean = diff + (size >> 1) >> (level + 3);
160 av_assert2(mean > -300 && mean < 300);
161
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65429340 mean = av_clip(mean, intra ? 0 : -256, 255);
162 65429340 best_vector_score = score;
163 65429340 best_vector[stage] = i;
164 65429340 best_vector_sum = sum;
165 65429340 best_vector_mean = mean;
166 }
167 }
168
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24574212 av_assert0(best_vector_mean != -999);
169 24574212 vector = codebook + stage * size * 16 + best_vector[stage] * size;
170
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445505988 for (j = 0; j < size; j++)
171 420931776 block[stage + 1][j] = block[stage][j] - vector[j];
172 24574212 block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
173 24574212 best_vector_score += lambda *
174 24574212 (+1 + 4 * count +
175 24574212 multistage_vlc[1 + count][1]
176 24574212 + mean_vlc[best_vector_mean][1]);
177
178
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24574212 if (best_vector_score < best_score) {
179 5418702 best_score = best_vector_score;
180 5418702 best_count = count;
181 5418702 best_mean = best_vector_mean;
182 }
183 }
184 }
185
186 4302520 split = 0;
187
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4302520 if (best_score > threshold && level) {
188 2116785 int score = 0;
189
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2116785 int offset = level & 1 ? stride * h / 2 : w / 2;
190 PutBitContext backup[6];
191
192
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6020163 for (i = level - 1; i >= 0; i--)
193 3903378 backup[i] = s->reorder_pb[i];
194 2116785 score += encode_block(s, src, ref, decoded, stride, level - 1,
195 threshold >> 1, lambda, intra);
196 2116785 score += encode_block(s, src + offset, ref + offset, decoded + offset,
197 stride, level - 1, threshold >> 1, lambda, intra);
198 2116785 score += lambda;
199
200
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2116785 if (score < best_score) {
201 1359022 best_score = score;
202 1359022 split = 1;
203 } else {
204
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1804497 for (i = level - 1; i >= 0; i--)
205 1046734 s->reorder_pb[i] = backup[i];
206 }
207 }
208
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4302520 if (level > 0)
209 2127648 put_bits(&s->reorder_pb[level], 1, split);
210
211
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4302520 if (!split) {
212 av_assert1(best_mean >= 0 && best_mean < 256 || !intra);
213 av_assert1(best_mean >= -256 && best_mean < 256);
214 av_assert1(best_count >= 0 && best_count < 7);
215 av_assert1(level < 4 || best_count == 0);
216
217 /* output the encoding */
218 2943498 put_bits(&s->reorder_pb[level],
219 2943498 multistage_vlc[1 + best_count][1],
220 2943498 multistage_vlc[1 + best_count][0]);
221 2943498 put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
222 2943498 mean_vlc[best_mean][0]);
223
224
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6593260 for (i = 0; i < best_count; i++) {
225 av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);
226 3649762 put_bits(&s->reorder_pb[level], 4, best_vector[i]);
227 }
228
229
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10625782 for (y = 0; y < h; y++)
230
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43895628 for (x = 0; x < w; x++)
231 36213344 decoded[x + y * stride] = src[x + y * stride] -
232 36213344 block[best_count][x + w * y] +
233 best_mean;
234 }
235
236 4302520 return best_score;
237 }
238
239 131005 static void init_block_index(MpegEncContext *s){
240 131005 s->block_index[0]= s->b8_stride*(s->mb_y*2 ) + s->mb_x*2;
241 131005 s->block_index[1]= s->b8_stride*(s->mb_y*2 ) + 1 + s->mb_x*2;
242 131005 s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) + s->mb_x*2;
243 131005 s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) + 1 + s->mb_x*2;
244 131005 s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x;
245 131005 s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x;
246 131005 }
247
248 600 static int svq1_encode_plane(SVQ1EncContext *s, int plane,
249 unsigned char *src_plane,
250 unsigned char *ref_plane,
251 unsigned char *decoded_plane,
252 int width, int height, int src_stride, int stride)
253 {
254 int x, y;
255 int i;
256 int block_width, block_height;
257 int level;
258 int threshold[6];
259 600 uint8_t *src = s->scratchbuf + stride * 32;
260 600 const int lambda = (s->quality * s->quality) >>
261 (2 * FF_LAMBDA_SHIFT);
262
263 /* figure out the acceptable level thresholds in advance */
264 600 threshold[5] = QUALITY_THRESHOLD;
265
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3600 for (level = 4; level >= 0; level--)
266 3000 threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
267
268 600 block_width = (width + 15) / 16;
269 600 block_height = (height + 15) / 16;
270
271
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600 if (s->pict_type == AV_PICTURE_TYPE_P) {
272 540 s->m.avctx = s->avctx;
273 540 s->m.current_picture_ptr = &s->m.current_picture;
274 540 s->m.last_picture_ptr = &s->m.last_picture;
275 540 s->m.last_picture.f->data[0] = ref_plane;
276 540 s->m.linesize =
277 540 s->m.last_picture.f->linesize[0] =
278 540 s->m.new_picture.f->linesize[0] =
279 540 s->m.current_picture.f->linesize[0] = stride;
280 540 s->m.width = width;
281 540 s->m.height = height;
282 540 s->m.mb_width = block_width;
283 540 s->m.mb_height = block_height;
284 540 s->m.mb_stride = s->m.mb_width + 1;
285 540 s->m.b8_stride = 2 * s->m.mb_width + 1;
286 540 s->m.f_code = 1;
287 540 s->m.pict_type = s->pict_type;
288 540 s->m.motion_est = s->motion_est;
289 540 s->m.me.scene_change_score = 0;
290 // s->m.out_format = FMT_H263;
291 // s->m.unrestricted_mv = 1;
292 540 s->m.lambda = s->quality;
293 540 s->m.qscale = s->m.lambda * 139 +
294 540 FF_LAMBDA_SCALE * 64 >>
295 FF_LAMBDA_SHIFT + 7;
296 540 s->m.lambda2 = s->m.lambda * s->m.lambda +
297 540 FF_LAMBDA_SCALE / 2 >>
298 FF_LAMBDA_SHIFT;
299
300
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540 if (!s->motion_val8[plane]) {
301 24 s->motion_val8[plane] = av_mallocz((s->m.b8_stride *
302 12 block_height * 2 + 2) *
303 2 * sizeof(int16_t));
304 24 s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
305 12 (block_height + 2) + 1) *
306 2 * sizeof(int16_t));
307
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12 if (!s->motion_val8[plane] || !s->motion_val16[plane])
308 return AVERROR(ENOMEM);
309 }
310
311 540 s->m.mb_type = s->mb_type;
312
313 // dummies, to avoid segfaults
314 540 s->m.current_picture.mb_mean = (uint8_t *)s->dummy;
315 540 s->m.current_picture.mb_var = (uint16_t *)s->dummy;
316 540 s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;
317 540 s->m.current_picture.mb_type = s->dummy;
318
319 540 s->m.current_picture.motion_val[0] = s->motion_val8[plane] + 2;
320 540 s->m.p_mv_table = s->motion_val16[plane] +
321 540 s->m.mb_stride + 1;
322 540 s->m.mecc = s->mecc; // move
323 540 ff_init_me(&s->m);
324
325 540 s->m.me.dia_size = s->avctx->dia_size;
326 540 s->m.first_slice_line = 1;
327
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4545 for (y = 0; y < block_height; y++) {
328 4005 s->m.new_picture.f->data[0] = src - y * 16 * stride; // ugly
329 4005 s->m.mb_y = y;
330
331
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64575 for (i = 0; i < 16 && i + 16 * y < height; i++) {
332 60570 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
333 width);
334
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243270 for (x = width; x < 16 * block_width; x++)
335 182700 src[i * stride + x] = src[i * stride + x - 1];
336 }
337
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7515 for (; i < 16 && i + 16 * y < 16 * block_height; i++)
338 3510 memcpy(&src[i * stride], &src[(i - 1) * stride],
339 3510 16 * block_width);
340
341
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66060 for (x = 0; x < block_width; x++) {
342 62055 s->m.mb_x = x;
343 62055 init_block_index(&s->m);
344
345 62055 ff_estimate_p_frame_motion(&s->m, x, y);
346 }
347 4005 s->m.first_slice_line = 0;
348 }
349
350 540 ff_fix_long_p_mvs(&s->m, CANDIDATE_MB_TYPE_INTRA);
351 540 ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,
352 CANDIDATE_MB_TYPE_INTER, 0);
353 }
354
355 600 s->m.first_slice_line = 1;
356
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5050 for (y = 0; y < block_height; y++) {
357
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71750 for (i = 0; i < 16 && i + 16 * y < height; i++) {
358 67300 memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
359 width);
360
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270300 for (x = width; x < 16 * block_width; x++)
361 203000 src[i * stride + x] = src[i * stride + x - 1];
362 }
363
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8350 for (; i < 16 && i + 16 * y < 16 * block_height; i++)
364 3900 memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
365
366 4450 s->m.mb_y = y;
367
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73400 for (x = 0; x < block_width; x++) {
368 uint8_t reorder_buffer[2][6][7 * 32];
369 int count[2][6];
370 68950 int offset = y * 16 * stride + x * 16;
371 68950 uint8_t *decoded = decoded_plane + offset;
372 68950 uint8_t *ref = ref_plane + offset;
373 68950 int score[4] = { 0, 0, 0, 0 }, best;
374 68950 uint8_t *temp = s->scratchbuf;
375
376
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68950 if (put_bytes_left(&s->pb, 0) < 3000) { // FIXME: check size
377 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
378 return -1;
379 }
380
381 68950 s->m.mb_x = x;
382 68950 init_block_index(&s->m);
383
384
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68950 if (s->pict_type == AV_PICTURE_TYPE_I ||
385
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62055 (s->m.mb_type[x + y * s->m.mb_stride] &
386 CANDIDATE_MB_TYPE_INTRA)) {
387
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72443 for (i = 0; i < 6; i++)
388 62094 init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
389 7 * 32);
390
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10349 if (s->pict_type == AV_PICTURE_TYPE_P) {
391 3454 const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
392 3454 put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
393 3454 score[0] = vlc[1] * lambda;
394 }
395 10349 score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
396 5, 64, lambda, 1);
397
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72443 for (i = 0; i < 6; i++) {
398 62094 count[0][i] = put_bits_count(&s->reorder_pb[i]);
399 62094 flush_put_bits(&s->reorder_pb[i]);
400 }
401 } else
402 58601 score[0] = INT_MAX;
403
404 68950 best = 0;
405
406
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68950 if (s->pict_type == AV_PICTURE_TYPE_P) {
407 62055 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 62055 motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
412
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62055 if (s->m.mb_type[x + y * s->m.mb_stride] &
413 CANDIDATE_MB_TYPE_INTER) {
414
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410207 for (i = 0; i < 6; i++)
415 351606 init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
416 7 * 32);
417
418 58601 put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
419
420 58601 s->m.pb = s->reorder_pb[5];
421 58601 mx = motion_ptr[0];
422 58601 my = motion_ptr[1];
423 av_assert1(mx >= -32 && mx <= 31);
424 av_assert1(my >= -32 && my <= 31);
425 av_assert1(pred_x >= -32 && pred_x <= 31);
426 av_assert1(pred_y >= -32 && pred_y <= 31);
427 58601 ff_h263_encode_motion(&s->m.pb, mx - pred_x, 1);
428 58601 ff_h263_encode_motion(&s->m.pb, my - pred_y, 1);
429 58601 s->reorder_pb[5] = s->m.pb;
430 58601 score[1] += lambda * put_bits_count(&s->reorder_pb[5]);
431
432 58601 dxy = (mx & 1) + 2 * (my & 1);
433
434 58601 s->hdsp.put_pixels_tab[0][dxy](temp + 16*stride,
435 58601 ref + (mx >> 1) +
436 58601 stride * (my >> 1),
437 stride, 16);
438
439 58601 score[1] += encode_block(s, src + 16 * x, temp + 16*stride,
440 decoded, stride, 5, 64, lambda, 0);
441 58601 best = score[1] <= score[0];
442
443 58601 vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
444 58601 score[2] = s->mecc.sse[0](NULL, src + 16 * x, ref,
445 stride, 16);
446 58601 score[2] += vlc[1] * lambda;
447
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58601 if (score[2] < score[best] && mx == 0 && my == 0) {
448 84 best = 2;
449 84 s->hdsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
450 84 put_bits(&s->pb, vlc[1], vlc[0]);
451 }
452 }
453
454
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62055 if (best == 1) {
455
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409619 for (i = 0; i < 6; i++) {
456 351102 count[1][i] = put_bits_count(&s->reorder_pb[i]);
457 351102 flush_put_bits(&s->reorder_pb[i]);
458 }
459 } else {
460 3538 motion_ptr[0] =
461 3538 motion_ptr[1] =
462 3538 motion_ptr[2] =
463 3538 motion_ptr[3] =
464 3538 motion_ptr[0 + 2 * s->m.b8_stride] =
465 3538 motion_ptr[1 + 2 * s->m.b8_stride] =
466 3538 motion_ptr[2 + 2 * s->m.b8_stride] =
467 3538 motion_ptr[3 + 2 * s->m.b8_stride] = 0;
468 }
469 }
470
471 68950 s->rd_total += score[best];
472
473
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68950 if (best != 2)
474
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482062 for (i = 5; i >= 0; i--)
475 413196 ff_copy_bits(&s->pb, reorder_buffer[best][i],
476 count[best][i]);
477
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68950 if (best == 0)
478 10349 s->hdsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
479 }
480 4450 s->m.first_slice_line = 0;
481 }
482 600 return 0;
483 }
484
485 4 static av_cold int svq1_encode_end(AVCodecContext *avctx)
486 {
487 4 SVQ1EncContext *const s = avctx->priv_data;
488 int i;
489
490
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4 if (avctx->frame_number)
491 4 av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
492 4 s->rd_total / (double)(avctx->width * avctx->height *
493 4 avctx->frame_number));
494
495 4 s->m.mb_type = NULL;
496 4 ff_mpv_common_end(&s->m);
497
498 4 av_freep(&s->m.me.scratchpad);
499 4 av_freep(&s->m.me.map);
500 4 av_freep(&s->m.me.score_map);
501 4 av_freep(&s->mb_type);
502 4 av_freep(&s->dummy);
503 4 av_freep(&s->scratchbuf);
504
505
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16 for (i = 0; i < 3; i++) {
506 12 av_freep(&s->motion_val8[i]);
507 12 av_freep(&s->motion_val16[i]);
508 }
509
510 4 av_frame_free(&s->current_picture);
511 4 av_frame_free(&s->last_picture);
512
513 4 return 0;
514 }
515
516 4 static av_cold int svq1_encode_init(AVCodecContext *avctx)
517 {
518 4 SVQ1EncContext *const s = avctx->priv_data;
519 int ret;
520
521
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4 if (avctx->width >= 4096 || avctx->height >= 4096) {
522 av_log(avctx, AV_LOG_ERROR, "Dimensions too large, maximum is 4095x4095\n");
523 return AVERROR(EINVAL);
524 }
525
526 4 ff_hpeldsp_init(&s->hdsp, avctx->flags);
527 4 ff_me_cmp_init(&s->mecc, avctx);
528 4 ff_mpegvideoencdsp_init(&s->m.mpvencdsp, avctx);
529
530 4 s->current_picture = av_frame_alloc();
531 4 s->last_picture = av_frame_alloc();
532
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4 if (!s->current_picture || !s->last_picture) {
533 return AVERROR(ENOMEM);
534 }
535
536 4 s->frame_width = avctx->width;
537 4 s->frame_height = avctx->height;
538
539 4 s->y_block_width = (s->frame_width + 15) / 16;
540 4 s->y_block_height = (s->frame_height + 15) / 16;
541
542 4 s->c_block_width = (s->frame_width / 4 + 15) / 16;
543 4 s->c_block_height = (s->frame_height / 4 + 15) / 16;
544
545 4 s->avctx = avctx;
546 4 s->m.avctx = avctx;
547
548
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4 if ((ret = ff_mpv_common_init(&s->m)) < 0) {
549 return ret;
550 }
551
552 4 s->m.picture_structure = PICT_FRAME;
553 4 s->m.me.temp =
554 8 s->m.me.scratchpad = av_mallocz((avctx->width + 64) *
555 4 2 * 16 * 2 * sizeof(uint8_t));
556 4 s->m.me.map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
557 4 s->m.me.score_map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
558 8 s->mb_type = av_mallocz((s->y_block_width + 1) *
559 4 s->y_block_height * sizeof(int16_t));
560 8 s->dummy = av_mallocz((s->y_block_width + 1) *
561 4 s->y_block_height * sizeof(int32_t));
562 4 s->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
563
564
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4 if (!s->m.me.temp || !s->m.me.scratchpad || !s->m.me.map ||
565
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4 !s->m.me.score_map || !s->mb_type || !s->dummy) {
566 return AVERROR(ENOMEM);
567 }
568
569 if (ARCH_PPC)
570 ff_svq1enc_init_ppc(s);
571 if (ARCH_X86)
572 4 ff_svq1enc_init_x86(s);
573
574 4 ff_h263_encode_init(&s->m); // mv_penalty
575
576 4 return 0;
577 }
578
579 200 static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
580 const AVFrame *pict, int *got_packet)
581 {
582 200 SVQ1EncContext *const s = avctx->priv_data;
583 int i, ret;
584
585 200 ret = ff_alloc_packet(avctx, pkt, s->y_block_width * s->y_block_height *
586 200 MAX_MB_BYTES * 3 + AV_INPUT_BUFFER_MIN_SIZE);
587
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200 if (ret < 0)
588 return ret;
589
590
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200 if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {
591 av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
592 return -1;
593 }
594
595
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200 if (!s->current_picture->data[0]) {
596
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4 if ((ret = ff_get_buffer(avctx, s->current_picture, 0)) < 0) {
597 return ret;
598 }
599 }
600
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200 if (!s->last_picture->data[0]) {
601 4 ret = ff_get_buffer(avctx, s->last_picture, 0);
602
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4 if (ret < 0)
603 return ret;
604 }
605
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200 if (!s->scratchbuf) {
606 4 s->scratchbuf = av_malloc_array(s->current_picture->linesize[0], 16 * 3);
607
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4 if (!s->scratchbuf)
608 return AVERROR(ENOMEM);
609 }
610
611 200 FFSWAP(AVFrame*, s->current_picture, s->last_picture);
612
613 200 init_put_bits(&s->pb, pkt->data, pkt->size);
614
615
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200 if (avctx->gop_size && (avctx->frame_number % avctx->gop_size))
616 180 s->pict_type = AV_PICTURE_TYPE_P;
617 else
618 20 s->pict_type = AV_PICTURE_TYPE_I;
619 200 s->quality = pict->quality;
620
621 200 ff_side_data_set_encoder_stats(pkt, pict->quality, NULL, 0, s->pict_type);
622
623 200 svq1_write_header(s, s->pict_type);
624
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800 for (i = 0; i < 3; i++) {
625 1800 int ret = svq1_encode_plane(s, i,
626 600 pict->data[i],
627 600 s->last_picture->data[i],
628 600 s->current_picture->data[i],
629
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600 s->frame_width / (i ? 4 : 1),
630 600 s->frame_height / (i ? 4 : 1),
631 600 pict->linesize[i],
632
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600 s->current_picture->linesize[i]);
633 600 emms_c();
634
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600 if (ret < 0) {
635 int j;
636 for (j = 0; j < i; j++) {
637 av_freep(&s->motion_val8[j]);
638 av_freep(&s->motion_val16[j]);
639 }
640 av_freep(&s->scratchbuf);
641 return -1;
642 }
643 }
644
645 // align_put_bits(&s->pb);
646
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3365 while (put_bits_count(&s->pb) & 31)
647 3165 put_bits(&s->pb, 1, 0);
648
649 200 flush_put_bits(&s->pb);
650
651 200 pkt->size = put_bytes_output(&s->pb);
652
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200 if (s->pict_type == AV_PICTURE_TYPE_I)
653 20 pkt->flags |= AV_PKT_FLAG_KEY;
654 200 *got_packet = 1;
655
656 200 return 0;
657 }
658
659 #define OFFSET(x) offsetof(struct SVQ1EncContext, x)
660 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
661 static const AVOption options[] = {
662 { "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"},
663 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
664 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
665 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
666
667 { NULL },
668 };
669
670 static const AVClass svq1enc_class = {
671 .class_name = "svq1enc",
672 .item_name = av_default_item_name,
673 .option = options,
674 .version = LIBAVUTIL_VERSION_INT,
675 };
676
677 const AVCodec ff_svq1_encoder = {
678 .name = "svq1",
679 .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
680 .type = AVMEDIA_TYPE_VIDEO,
681 .id = AV_CODEC_ID_SVQ1,
682 .priv_data_size = sizeof(SVQ1EncContext),
683 .priv_class = &svq1enc_class,
684 .init = svq1_encode_init,
685 .encode2 = svq1_encode_frame,
686 .close = svq1_encode_end,
687 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
688 AV_PIX_FMT_NONE },
689 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
690 };
691