FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/mjpegenc.c
Date: 2021-09-16 08:47:15
Exec Total Coverage
Lines: 270 299 90.3%
Branches: 87 108 80.6%

Line Branch Exec Source
1 /*
2 * MJPEG encoder
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 * Copyright (c) 2003 Alex Beregszaszi
5 * Copyright (c) 2003-2004 Michael Niedermayer
6 *
7 * Support for external huffman table, various fixes (AVID workaround),
8 * aspecting, new decode_frame mechanism and apple mjpeg-b support
9 * by Alex Beregszaszi
10 *
11 * This file is part of FFmpeg.
12 *
13 * FFmpeg is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Lesser General Public
15 * License as published by the Free Software Foundation; either
16 * version 2.1 of the License, or (at your option) any later version.
17 *
18 * FFmpeg is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Lesser General Public License for more details.
22 *
23 * You should have received a copy of the GNU Lesser General Public
24 * License along with FFmpeg; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 */
27
28 /**
29 * @file
30 * MJPEG encoder.
31 */
32
33 #include "libavutil/pixdesc.h"
34
35 #include "avcodec.h"
36 #include "jpegtables.h"
37 #include "mjpegenc_common.h"
38 #include "mjpegenc_huffman.h"
39 #include "mpegvideo.h"
40 #include "mjpeg.h"
41 #include "mjpegenc.h"
42 #include "profiles.h"
43
44 2536 static av_cold void init_uni_ac_vlc(const uint8_t huff_size_ac[256],
45 uint8_t *uni_ac_vlc_len)
46 {
47
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327144 for (int i = 0; i < 128; i++) {
48 324608 int level = i - 64;
49
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324608 if (!level)
50 2536 continue;
51
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20934680 for (int run = 0; run < 64; run++) {
52 int len, code, nbits;
53 20612608 int alevel = FFABS(level);
54
55 20612608 len = (run >> 4) * huff_size_ac[0xf0];
56
57 20612608 nbits= av_log2_16bit(alevel) + 1;
58 20612608 code = ((15&run) << 4) | nbits;
59
60 20612608 len += huff_size_ac[code] + nbits;
61
62 20612608 uni_ac_vlc_len[UNI_AC_ENC_INDEX(run, i)] = len;
63 // We ignore EOB as its just a constant which does not change generally
64 }
65 }
66 2536 }
67
68 #if CONFIG_MJPEG_ENCODER
69 /**
70 * Encodes and outputs the entire frame in the JPEG format.
71 *
72 * @param s The MpegEncContext.
73 */
74 1238 static void mjpeg_encode_picture_frame(MpegEncContext *s)
75 {
76 int nbits, code, table_id;
77 1238 MJpegContext *m = s->mjpeg_ctx;
78 1238 uint8_t *huff_size[4] = { m->huff_size_dc_luminance,
79 1238 m->huff_size_dc_chrominance,
80 1238 m->huff_size_ac_luminance,
81 1238 m->huff_size_ac_chrominance };
82 1238 uint16_t *huff_code[4] = { m->huff_code_dc_luminance,
83 1238 m->huff_code_dc_chrominance,
84 1238 m->huff_code_ac_luminance,
85 1238 m->huff_code_ac_chrominance };
86 1238 size_t total_bits = 0;
87 size_t bytes_needed;
88
89 1238 s->header_bits = get_bits_diff(s);
90 // Estimate the total size first
91
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28812345 for (int i = 0; i < m->huff_ncode; i++) {
92 28811107 table_id = m->huff_buffer[i].table_id;
93 28811107 code = m->huff_buffer[i].code;
94 28811107 nbits = code & 0xf;
95
96 28811107 total_bits += huff_size[table_id][code] + nbits;
97 }
98
99 1238 bytes_needed = (total_bits + 7) / 8;
100 1238 ff_mpv_reallocate_putbitbuffer(s, bytes_needed, bytes_needed);
101
102
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28812345 for (int i = 0; i < m->huff_ncode; i++) {
103 28811107 table_id = m->huff_buffer[i].table_id;
104 28811107 code = m->huff_buffer[i].code;
105 28811107 nbits = code & 0xf;
106
107 28811107 put_bits(&s->pb, huff_size[table_id][code], huff_code[table_id][code]);
108
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28811107 if (nbits != 0) {
109 26007642 put_sbits(&s->pb, nbits, m->huff_buffer[i].mant);
110 }
111 }
112
113 1238 m->huff_ncode = 0;
114 1238 s->i_tex_bits = get_bits_diff(s);
115 1238 }
116
117 /**
118 * Builds all 4 optimal Huffman tables.
119 *
120 * Uses the data stored in the JPEG buffer to compute the tables.
121 * Stores the Huffman tables in the bits_* and val_* arrays in the MJpegContext.
122 *
123 * @param m MJpegContext containing the JPEG buffer.
124 */
125 1238 static void mjpeg_build_optimal_huffman(MJpegContext *m)
126 {
127 MJpegEncHuffmanContext dc_luminance_ctx;
128 MJpegEncHuffmanContext dc_chrominance_ctx;
129 MJpegEncHuffmanContext ac_luminance_ctx;
130 MJpegEncHuffmanContext ac_chrominance_ctx;
131 1238 MJpegEncHuffmanContext *ctx[4] = { &dc_luminance_ctx,
132 &dc_chrominance_ctx,
133 &ac_luminance_ctx,
134 &ac_chrominance_ctx };
135
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6190 for (int i = 0; i < 4; i++)
136 4952 ff_mjpeg_encode_huffman_init(ctx[i]);
137
138
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28812345 for (int i = 0; i < m->huff_ncode; i++) {
139 28811107 int table_id = m->huff_buffer[i].table_id;
140 28811107 int code = m->huff_buffer[i].code;
141
142 28811107 ff_mjpeg_encode_huffman_increment(ctx[table_id], code);
143 }
144
145 1238 ff_mjpeg_encode_huffman_close(&dc_luminance_ctx,
146 1238 m->bits_dc_luminance,
147 1238 m->val_dc_luminance, 12);
148 1238 ff_mjpeg_encode_huffman_close(&dc_chrominance_ctx,
149 1238 m->bits_dc_chrominance,
150 1238 m->val_dc_chrominance, 12);
151 1238 ff_mjpeg_encode_huffman_close(&ac_luminance_ctx,
152 1238 m->bits_ac_luminance,
153 1238 m->val_ac_luminance, 256);
154 1238 ff_mjpeg_encode_huffman_close(&ac_chrominance_ctx,
155 1238 m->bits_ac_chrominance,
156 1238 m->val_ac_chrominance, 256);
157
158 1238 ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
159 1238 m->huff_code_dc_luminance,
160 1238 m->bits_dc_luminance,
161 1238 m->val_dc_luminance);
162 1238 ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
163 1238 m->huff_code_dc_chrominance,
164 1238 m->bits_dc_chrominance,
165 1238 m->val_dc_chrominance);
166 1238 ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
167 1238 m->huff_code_ac_luminance,
168 1238 m->bits_ac_luminance,
169 1238 m->val_ac_luminance);
170 1238 ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
171 1238 m->huff_code_ac_chrominance,
172 1238 m->bits_ac_chrominance,
173 1238 m->val_ac_chrominance);
174 1238 }
175 #endif
176
177 /**
178 * Writes the complete JPEG frame when optimal huffman tables are enabled,
179 * otherwise writes the stuffing.
180 *
181 * Header + values + stuffing.
182 *
183 * @param s The MpegEncContext.
184 * @return int Error code, 0 if successful.
185 */
186 1438 int ff_mjpeg_encode_stuffing(MpegEncContext *s)
187 {
188 1438 PutBitContext *pbc = &s->pb;
189 1438 int mb_y = s->mb_y - !s->mb_x;
190 int ret;
191
192 #if CONFIG_MJPEG_ENCODER
193
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1438 if (s->huffman == HUFFMAN_TABLE_OPTIMAL) {
194 1238 MJpegContext *m = s->mjpeg_ctx;
195
196 1238 mjpeg_build_optimal_huffman(m);
197
198 // Replace the VLCs with the optimal ones.
199 // The default ones may be used for trellis during quantization.
200 1238 init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
201 1238 init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
202 1238 s->intra_ac_vlc_length =
203 1238 s->intra_ac_vlc_last_length = m->uni_ac_vlc_len;
204 1238 s->intra_chroma_ac_vlc_length =
205 1238 s->intra_chroma_ac_vlc_last_length = m->uni_chroma_ac_vlc_len;
206
207 1238 ff_mjpeg_encode_picture_header(s->avctx, &s->pb, &s->intra_scantable,
208 1238 s->pred, s->intra_matrix, s->chroma_intra_matrix);
209 1238 mjpeg_encode_picture_frame(s);
210 }
211 #endif
212
213 1438 ret = ff_mpv_reallocate_putbitbuffer(s, put_bits_count(&s->pb) / 8 + 100,
214 1438 put_bits_count(&s->pb) / 4 + 1000);
215
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1438 if (ret < 0) {
216 av_log(s->avctx, AV_LOG_ERROR, "Buffer reallocation failed\n");
217 goto fail;
218 }
219
220 1438 ff_mjpeg_escape_FF(pbc, s->esc_pos);
221
222
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1438 if ((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height - 1)
223 put_marker(pbc, RST0 + (mb_y&7));
224 1438 s->esc_pos = put_bytes_count(pbc, 0);
225
226 1438 fail:
227
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5752 for (int i = 0; i < 3; i++)
228 4314 s->last_dc[i] = 128 << s->intra_dc_precision;
229
230 1438 return ret;
231 }
232
233 26 static int alloc_huffman(MpegEncContext *s)
234 {
235 26 MJpegContext *m = s->mjpeg_ctx;
236 size_t num_mbs, num_blocks, num_codes;
237 int blocks_per_mb;
238
239 // We need to init this here as the mjpeg init is called before the common init,
240 26 s->mb_width = (s->width + 15) / 16;
241 26 s->mb_height = (s->height + 15) / 16;
242
243
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26 switch (s->chroma_format) {
244 18 case CHROMA_420: blocks_per_mb = 6; break;
245 4 case CHROMA_422: blocks_per_mb = 8; break;
246 4 case CHROMA_444: blocks_per_mb = 12; break;
247 default: av_assert0(0);
248 };
249
250 // Make sure we have enough space to hold this frame.
251 26 num_mbs = s->mb_width * s->mb_height;
252 26 num_blocks = num_mbs * blocks_per_mb;
253 26 num_codes = num_blocks * 64;
254
255 26 m->huff_buffer = av_malloc_array(num_codes, sizeof(MJpegHuffmanCode));
256
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26 if (!m->huff_buffer)
257 return AVERROR(ENOMEM);
258 26 return 0;
259 }
260
261 30 av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
262 {
263 MJpegContext *m;
264 int ret;
265
266
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30 av_assert0(s->slice_context_count == 1);
267
268 /* The following check is automatically true for AMV,
269 * but it doesn't hurt either. */
270 30 ret = ff_mjpeg_encode_check_pix_fmt(s->avctx);
271
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30 if (ret < 0)
272 return ret;
273
274
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30 if (s->width > 65500 || s->height > 65500) {
275 av_log(s, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n");
276 return AVERROR(EINVAL);
277 }
278
279 30 m = av_mallocz(sizeof(MJpegContext));
280
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30 if (!m)
281 return AVERROR(ENOMEM);
282
283 30 s->min_qcoeff=-1023;
284 30 s->max_qcoeff= 1023;
285
286 // Build default Huffman tables.
287 // These may be overwritten later with more optimal Huffman tables, but
288 // they are needed at least right now for some processes like trellis.
289 30 ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance,
290 30 m->huff_code_dc_luminance,
291 avpriv_mjpeg_bits_dc_luminance,
292 avpriv_mjpeg_val_dc);
293 30 ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance,
294 30 m->huff_code_dc_chrominance,
295 avpriv_mjpeg_bits_dc_chrominance,
296 avpriv_mjpeg_val_dc);
297 30 ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance,
298 30 m->huff_code_ac_luminance,
299 avpriv_mjpeg_bits_ac_luminance,
300 avpriv_mjpeg_val_ac_luminance);
301 30 ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance,
302 30 m->huff_code_ac_chrominance,
303 avpriv_mjpeg_bits_ac_chrominance,
304 avpriv_mjpeg_val_ac_chrominance);
305
306 30 init_uni_ac_vlc(m->huff_size_ac_luminance, m->uni_ac_vlc_len);
307 30 init_uni_ac_vlc(m->huff_size_ac_chrominance, m->uni_chroma_ac_vlc_len);
308 30 s->intra_ac_vlc_length =
309 30 s->intra_ac_vlc_last_length = m->uni_ac_vlc_len;
310 30 s->intra_chroma_ac_vlc_length =
311 30 s->intra_chroma_ac_vlc_last_length = m->uni_chroma_ac_vlc_len;
312
313 // Buffers start out empty.
314 30 m->huff_ncode = 0;
315 30 s->mjpeg_ctx = m;
316
317
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30 if(s->huffman == HUFFMAN_TABLE_OPTIMAL)
318 26 return alloc_huffman(s);
319
320 4 return 0;
321 }
322
323 30 av_cold void ff_mjpeg_encode_close(MpegEncContext *s)
324 {
325
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30 if (s->mjpeg_ctx) {
326 30 av_freep(&s->mjpeg_ctx->huff_buffer);
327 30 av_freep(&s->mjpeg_ctx);
328 }
329 30 }
330
331 /**
332 * Add code and table_id to the JPEG buffer.
333 *
334 * @param s The MJpegContext which contains the JPEG buffer.
335 * @param table_id Which Huffman table the code belongs to.
336 * @param code The encoded exponent of the coefficients and the run-bits.
337 */
338 28811107 static inline void ff_mjpeg_encode_code(MJpegContext *s, uint8_t table_id, int code)
339 {
340 28811107 MJpegHuffmanCode *c = &s->huff_buffer[s->huff_ncode++];
341 28811107 c->table_id = table_id;
342 28811107 c->code = code;
343 28811107 }
344
345 /**
346 * Add the coefficient's data to the JPEG buffer.
347 *
348 * @param s The MJpegContext which contains the JPEG buffer.
349 * @param table_id Which Huffman table the code belongs to.
350 * @param val The coefficient.
351 * @param run The run-bits.
352 */
353 26111467 static void ff_mjpeg_encode_coef(MJpegContext *s, uint8_t table_id, int val, int run)
354 {
355 int mant, code;
356
357
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26111467 if (val == 0) {
358
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103825 av_assert0(run == 0);
359 103825 ff_mjpeg_encode_code(s, table_id, 0);
360 } else {
361 26007642 mant = val;
362
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26007642 if (val < 0) {
363 12984441 val = -val;
364 12984441 mant--;
365 }
366
367 26007642 code = (run << 4) | (av_log2_16bit(val) + 1);
368
369 26007642 s->huff_buffer[s->huff_ncode].mant = mant;
370 26007642 ff_mjpeg_encode_code(s, table_id, code);
371 }
372 26111467 }
373
374 /**
375 * Add the block's data into the JPEG buffer.
376 *
377 * @param s The MJpegEncContext that contains the JPEG buffer.
378 * @param block The block.
379 * @param n The block's index or number.
380 */
381 2722788 static void record_block(MpegEncContext *s, int16_t *block, int n)
382 {
383 int i, j, table_id;
384 int component, dc, last_index, val, run;
385 2722788 MJpegContext *m = s->mjpeg_ctx;
386
387 /* DC coef */
388
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2722788 component = (n <= 3 ? 0 : (n&1) + 1);
389 2722788 table_id = (n <= 3 ? 0 : 1);
390 2722788 dc = block[0]; /* overflow is impossible */
391 2722788 val = dc - s->last_dc[component];
392
393 2722788 ff_mjpeg_encode_coef(m, table_id, val, 0);
394
395 2722788 s->last_dc[component] = dc;
396
397 /* AC coefs */
398
399 2722788 run = 0;
400 2722788 last_index = s->block_last_index[n];
401 2722788 table_id |= 2;
402
403
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52748192 for(i=1;i<=last_index;i++) {
404 50025404 j = s->intra_scantable.permutated[i];
405 50025404 val = block[j];
406
407
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50025404 if (val == 0) {
408 26636725 run++;
409 } else {
410
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23445317 while (run >= 16) {
411 56638 ff_mjpeg_encode_code(m, table_id, 0xf0);
412 56638 run -= 16;
413 }
414 23388679 ff_mjpeg_encode_coef(m, table_id, val, run);
415 23388679 run = 0;
416 }
417 }
418
419 /* output EOB only if not already 64 values */
420
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2722788 if (last_index < 63 || run != 0)
421 2643002 ff_mjpeg_encode_code(m, table_id, 0);
422 2722788 }
423
424 359100 static void encode_block(MpegEncContext *s, int16_t *block, int n)
425 {
426 int mant, nbits, code, i, j;
427 int component, dc, run, last_index, val;
428 359100 MJpegContext *m = s->mjpeg_ctx;
429 uint8_t *huff_size_ac;
430 uint16_t *huff_code_ac;
431
432 /* DC coef */
433
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359100 component = (n <= 3 ? 0 : (n&1) + 1);
434 359100 dc = block[0]; /* overflow is impossible */
435 359100 val = dc - s->last_dc[component];
436
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359100 if (n < 4) {
437 239400 ff_mjpeg_encode_dc(&s->pb, val, m->huff_size_dc_luminance, m->huff_code_dc_luminance);
438 239400 huff_size_ac = m->huff_size_ac_luminance;
439 239400 huff_code_ac = m->huff_code_ac_luminance;
440 } else {
441 119700 ff_mjpeg_encode_dc(&s->pb, val, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
442 119700 huff_size_ac = m->huff_size_ac_chrominance;
443 119700 huff_code_ac = m->huff_code_ac_chrominance;
444 }
445 359100 s->last_dc[component] = dc;
446
447 /* AC coefs */
448
449 359100 run = 0;
450 359100 last_index = s->block_last_index[n];
451
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6879268 for(i=1;i<=last_index;i++) {
452 6520168 j = s->intra_scantable.permutated[i];
453 6520168 val = block[j];
454
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6520168 if (val == 0) {
455 3000879 run++;
456 } else {
457
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3522307 while (run >= 16) {
458 3018 put_bits(&s->pb, huff_size_ac[0xf0], huff_code_ac[0xf0]);
459 3018 run -= 16;
460 }
461 3519289 mant = val;
462
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3519289 if (val < 0) {
463 1776140 val = -val;
464 1776140 mant--;
465 }
466
467 3519289 nbits= av_log2_16bit(val) + 1;
468 3519289 code = (run << 4) | nbits;
469
470 3519289 put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]);
471
472 3519289 put_sbits(&s->pb, nbits, mant);
473 3519289 run = 0;
474 }
475 }
476
477 /* output EOB only if not already 64 values */
478
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359100 if (last_index < 63 || run != 0)
479 344417 put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]);
480 359100 }
481
482 433998 void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[12][64])
483 {
484 int i;
485
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433998 if (s->huffman == HUFFMAN_TABLE_OPTIMAL) {
486
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374148 if (s->chroma_format == CHROMA_444) {
487 59850 record_block(s, block[0], 0);
488 59850 record_block(s, block[2], 2);
489 59850 record_block(s, block[4], 4);
490 59850 record_block(s, block[8], 8);
491 59850 record_block(s, block[5], 5);
492 59850 record_block(s, block[9], 9);
493
494
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59850 if (16*s->mb_x+8 < s->width) {
495 59700 record_block(s, block[1], 1);
496 59700 record_block(s, block[3], 3);
497 59700 record_block(s, block[6], 6);
498 59700 record_block(s, block[10], 10);
499 59700 record_block(s, block[7], 7);
500 59700 record_block(s, block[11], 11);
501 }
502 } else {
503
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1885788 for(i=0;i<5;i++) {
504 1571490 record_block(s, block[i], i);
505 }
506
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314298 if (s->chroma_format == CHROMA_420) {
507 254448 record_block(s, block[5], 5);
508 } else {
509 59850 record_block(s, block[6], 6);
510 59850 record_block(s, block[5], 5);
511 59850 record_block(s, block[7], 7);
512 }
513 }
514 } else {
515
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59850 if (s->chroma_format == CHROMA_444) {
516 encode_block(s, block[0], 0);
517 encode_block(s, block[2], 2);
518 encode_block(s, block[4], 4);
519 encode_block(s, block[8], 8);
520 encode_block(s, block[5], 5);
521 encode_block(s, block[9], 9);
522
523 if (16*s->mb_x+8 < s->width) {
524 encode_block(s, block[1], 1);
525 encode_block(s, block[3], 3);
526 encode_block(s, block[6], 6);
527 encode_block(s, block[10], 10);
528 encode_block(s, block[7], 7);
529 encode_block(s, block[11], 11);
530 }
531 } else {
532
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359100 for(i=0;i<5;i++) {
533 299250 encode_block(s, block[i], i);
534 }
535
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59850 if (s->chroma_format == CHROMA_420) {
536 59850 encode_block(s, block[5], 5);
537 } else {
538 encode_block(s, block[6], 6);
539 encode_block(s, block[5], 5);
540 encode_block(s, block[7], 7);
541 }
542 }
543
544 59850 s->i_tex_bits += get_bits_diff(s);
545 }
546 433998 }
547
548 #if CONFIG_AMV_ENCODER
549 // maximum over s->mjpeg_vsample[i]
550 #define V_MAX 2
551 200 static int amv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
552 const AVFrame *pic_arg, int *got_packet)
553 {
554 200 MpegEncContext *s = avctx->priv_data;
555 AVFrame *pic;
556 int i, ret;
557 int chroma_h_shift, chroma_v_shift;
558
559 200 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
560
561
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200 if ((avctx->height & 15) && avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
562 av_log(avctx, AV_LOG_ERROR,
563 "Heights which are not a multiple of 16 might fail with some decoders, "
564 "use vstrict=-1 / -strict -1 to use %d anyway.\n", avctx->height);
565 av_log(avctx, AV_LOG_WARNING, "If you have a device that plays AMV videos, please test if videos "
566 "with such heights work with it and report your findings to ffmpeg-devel@ffmpeg.org\n");
567 return AVERROR_EXPERIMENTAL;
568 }
569
570 200 pic = av_frame_clone(pic_arg);
571
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200 if (!pic)
572 return AVERROR(ENOMEM);
573 //picture should be flipped upside-down
574
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800 for(i=0; i < 3; i++) {
575
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600 int vsample = i ? 2 >> chroma_v_shift : 2;
576 600 pic->data[i] += pic->linesize[i] * (vsample * s->height / V_MAX - 1);
577 600 pic->linesize[i] *= -1;
578 }
579 200 ret = ff_mpv_encode_picture(avctx, pkt, pic, got_packet);
580 200 av_frame_free(&pic);
581 200 return ret;
582 }
583 #endif
584
585 #define OFFSET(x) offsetof(MpegEncContext, x)
586 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
587 static const AVOption options[] = {
588 FF_MPV_COMMON_OPTS
589 { "pred", "Prediction method", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 3, VE, "pred" },
590 { "left", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
591 { "plane", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "pred" },
592 { "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 3 }, INT_MIN, INT_MAX, VE, "pred" },
593 { "huffman", "Huffman table strategy", OFFSET(huffman), AV_OPT_TYPE_INT, { .i64 = HUFFMAN_TABLE_OPTIMAL }, 0, NB_HUFFMAN_TABLE_OPTION - 1, VE, "huffman" },
594 { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = HUFFMAN_TABLE_DEFAULT }, INT_MIN, INT_MAX, VE, "huffman" },
595 { "optimal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = HUFFMAN_TABLE_OPTIMAL }, INT_MIN, INT_MAX, VE, "huffman" },
596 { "force_duplicated_matrix", "Always write luma and chroma matrix for mjpeg, useful for rtp streaming.", OFFSET(force_duplicated_matrix), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, VE },
597 #if FF_API_MPEGVIDEO_OPTS
598 FF_MPV_DEPRECATED_MPEG_QUANT_OPT
599 FF_MPV_DEPRECATED_A53_CC_OPT
600 FF_MPV_DEPRECATED_BFRAME_OPTS
601 #endif
602 { NULL},
603 };
604
605 #if CONFIG_MJPEG_ENCODER
606 static const AVClass mjpeg_class = {
607 .class_name = "mjpeg encoder",
608 .item_name = av_default_item_name,
609 .option = options,
610 .version = LIBAVUTIL_VERSION_INT,
611 };
612
613 const AVCodec ff_mjpeg_encoder = {
614 .name = "mjpeg",
615 .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
616 .type = AVMEDIA_TYPE_VIDEO,
617 .id = AV_CODEC_ID_MJPEG,
618 .priv_data_size = sizeof(MpegEncContext),
619 .init = ff_mpv_encode_init,
620 .encode2 = ff_mpv_encode_picture,
621 .close = ff_mpv_encode_end,
622 .capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
623 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
624 .pix_fmts = (const enum AVPixelFormat[]) {
625 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
626 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
627 AV_PIX_FMT_NONE
628 },
629 .priv_class = &mjpeg_class,
630 .profiles = NULL_IF_CONFIG_SMALL(ff_mjpeg_profiles),
631 };
632 #endif
633
634 #if CONFIG_AMV_ENCODER
635 static const AVClass amv_class = {
636 .class_name = "amv encoder",
637 .item_name = av_default_item_name,
638 .option = options,
639 .version = LIBAVUTIL_VERSION_INT,
640 };
641
642 const AVCodec ff_amv_encoder = {
643 .name = "amv",
644 .long_name = NULL_IF_CONFIG_SMALL("AMV Video"),
645 .type = AVMEDIA_TYPE_VIDEO,
646 .id = AV_CODEC_ID_AMV,
647 .priv_data_size = sizeof(MpegEncContext),
648 .init = ff_mpv_encode_init,
649 .encode2 = amv_encode_picture,
650 .close = ff_mpv_encode_end,
651 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
652 .pix_fmts = (const enum AVPixelFormat[]) {
653 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_NONE
654 },
655 .priv_class = &amv_class,
656 };
657 #endif
658