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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / huffyuvenc.c
CommitLineData
2ba45a60
DM		 1/*
2 * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
5 * the algorithm used
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 * yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA
24 */
25
26/**
27 * @file
28 * huffyuv encoder
29 */
30
31#include "avcodec.h"
32#include "huffyuv.h"
33#include "huffman.h"
34#include "huffyuvencdsp.h"
35#include "internal.h"
36#include "put_bits.h"
37#include "libavutil/opt.h"
38#include "libavutil/pixdesc.h"
39
40static inline void diff_bytes(HYuvContext *s, uint8_t *dst,
41 const uint8_t *src0, const uint8_t *src1, int w)
42{
43 if (s->bps <= 8) {
44 s->hencdsp.diff_bytes(dst, src0, src1, w);
45 } else {
46 s->llviddsp.diff_int16((uint16_t *)dst, (const uint16_t *)src0, (const uint16_t *)src1, s->n - 1, w);
47 }
48}
49
50static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
51 const uint8_t *src, int w, int left)
52{
53 int i;
54 if (s->bps <= 8) {
55 if (w < 32) {
56 for (i = 0; i < w; i++) {
57 const int temp = src[i];
58 dst[i] = temp - left;
59 left = temp;
60 }
61 return left;
62 } else {
63 for (i = 0; i < 16; i++) {
64 const int temp = src[i];
65 dst[i] = temp - left;
66 left = temp;
67 }
68 s->hencdsp.diff_bytes(dst + 16, src + 16, src + 15, w - 16);
69 return src[w-1];
70 }
71 } else {
72 const uint16_t *src16 = (const uint16_t *)src;
73 uint16_t *dst16 = ( uint16_t *)dst;
74 if (w < 32) {
75 for (i = 0; i < w; i++) {
76 const int temp = src16[i];
77 dst16[i] = temp - left;
78 left = temp;
79 }
80 return left;
81 } else {
82 for (i = 0; i < 16; i++) {
83 const int temp = src16[i];
84 dst16[i] = temp - left;
85 left = temp;
86 }
87 s->llviddsp.diff_int16(dst16 + 16, src16 + 16, src16 + 15, s->n - 1, w - 16);
88 return src16[w-1];
89 }
90 }
91}
92
93static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst,
94 const uint8_t *src, int w,
95 int *red, int *green, int *blue,
96 int *alpha)
97{
98 int i;
99 int r, g, b, a;
100 r = *red;
101 g = *green;
102 b = *blue;
103 a = *alpha;
104
105 for (i = 0; i < FFMIN(w, 4); i++) {
106 const int rt = src[i * 4 + R];
107 const int gt = src[i * 4 + G];
108 const int bt = src[i * 4 + B];
109 const int at = src[i * 4 + A];
110 dst[i * 4 + R] = rt - r;
111 dst[i * 4 + G] = gt - g;
112 dst[i * 4 + B] = bt - b;
113 dst[i * 4 + A] = at - a;
114 r = rt;
115 g = gt;
116 b = bt;
117 a = at;
118 }
119
120 s->hencdsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16);
121
122 *red = src[(w - 1) * 4 + R];
123 *green = src[(w - 1) * 4 + G];
124 *blue = src[(w - 1) * 4 + B];
125 *alpha = src[(w - 1) * 4 + A];
126}
127
128static inline void sub_left_prediction_rgb24(HYuvContext *s, uint8_t *dst,
129 uint8_t *src, int w,
130 int *red, int *green, int *blue)
131{
132 int i;
133 int r, g, b;
134 r = *red;
135 g = *green;
136 b = *blue;
137 for (i = 0; i < FFMIN(w, 16); i++) {
138 const int rt = src[i * 3 + 0];
139 const int gt = src[i * 3 + 1];
140 const int bt = src[i * 3 + 2];
141 dst[i * 3 + 0] = rt - r;
142 dst[i * 3 + 1] = gt - g;
143 dst[i * 3 + 2] = bt - b;
144 r = rt;
145 g = gt;
146 b = bt;
147 }
148
149 s->hencdsp.diff_bytes(dst + 48, src + 48, src + 48 - 3, w * 3 - 48);
150
151 *red = src[(w - 1) * 3 + 0];
152 *green = src[(w - 1) * 3 + 1];
153 *blue = src[(w - 1) * 3 + 2];
154}
155
156static void sub_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src1, const uint8_t *src2, int w, int *left, int *left_top)
157{
158 if (s->bps <= 8) {
159 s->hencdsp.sub_hfyu_median_pred(dst, src1, src2, w , left, left_top);
160 } else {
161 s->llviddsp.sub_hfyu_median_pred_int16((uint16_t *)dst, (const uint16_t *)src1, (const uint16_t *)src2, s->n - 1, w , left, left_top);
162 }
163}
164
165static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
166{
167 int i;
168 int index = 0;
169 int n = s->vlc_n;
170
171 for (i = 0; i < n;) {
172 int val = len[i];
173 int repeat = 0;
174
175 for (; i < n && len[i] == val && repeat < 255; i++)
176 repeat++;
177
178 av_assert0(val < 32 && val >0 && repeat < 256 && repeat>0);
179 if (repeat > 7) {
180 buf[index++] = val;
181 buf[index++] = repeat;
182 } else {
183 buf[index++] = val | (repeat << 5);
184 }
185 }
186
187 return index;
188}
189
190static int store_huffman_tables(HYuvContext *s, uint8_t *buf)
191{
192 int i, ret;
193 int size = 0;
194 int count = 3;
195
196 if (s->version > 2)
197 count = 1 + s->alpha + 2*s->chroma;
198
199 for (i = 0; i < count; i++) {
200 if ((ret = ff_huff_gen_len_table(s->len[i], s->stats[i], s->vlc_n, 0)) < 0)
201 return ret;
202
203 if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n) < 0) {
204 return -1;
205 }
206
207 size += store_table(s, s->len[i], buf + size);
208 }
209 return size;
210}
211
212static av_cold int encode_init(AVCodecContext *avctx)
213{
214 HYuvContext *s = avctx->priv_data;
215 int i, j;
216 int ret;
217 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
218
219 ff_huffyuv_common_init(avctx);
220 ff_huffyuvencdsp_init(&s->hencdsp);
221
222 avctx->extradata = av_mallocz(3*MAX_N + 4);
223 if (!avctx->extradata)
224 return AVERROR(ENOMEM);
225 if (s->flags&CODEC_FLAG_PASS1) {
226#define STATS_OUT_SIZE 21*MAX_N*3 + 4
227 avctx->stats_out = av_mallocz(STATS_OUT_SIZE); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
228 if (!avctx->stats_out)
229 return AVERROR(ENOMEM);
230 }
231 s->version = 2;
232
233 avctx->coded_frame = av_frame_alloc();
234 if (!avctx->coded_frame)
235 return AVERROR(ENOMEM);
236
237 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
238 avctx->coded_frame->key_frame = 1;
239
240 s->bps = desc->comp[0].depth_minus1 + 1;
241 s->yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
242 s->chroma = desc->nb_components > 2;
243 s->alpha = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
244 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
245 &s->chroma_h_shift,
246 &s->chroma_v_shift);
247
248 switch (avctx->pix_fmt) {
249 case AV_PIX_FMT_YUV420P:
250 case AV_PIX_FMT_YUV422P:
251 if (s->width & 1) {
252 av_log(avctx, AV_LOG_ERROR, "Width must be even for this colorspace.\n");
253 return AVERROR(EINVAL);
254 }
255 s->bitstream_bpp = avctx->pix_fmt == AV_PIX_FMT_YUV420P ? 12 : 16;
256 break;
257 case AV_PIX_FMT_YUV444P:
258 case AV_PIX_FMT_YUV410P:
259 case AV_PIX_FMT_YUV411P:
260 case AV_PIX_FMT_YUV440P:
261 case AV_PIX_FMT_GBRP:
262 case AV_PIX_FMT_GBRP9:
263 case AV_PIX_FMT_GBRP10:
264 case AV_PIX_FMT_GBRP12:
265 case AV_PIX_FMT_GBRP14:
266 case AV_PIX_FMT_GBRP16:
267 case AV_PIX_FMT_GRAY8:
268 case AV_PIX_FMT_GRAY16:
269 case AV_PIX_FMT_YUVA444P:
270 case AV_PIX_FMT_YUVA420P:
271 case AV_PIX_FMT_YUVA422P:
272 case AV_PIX_FMT_GBRAP:
273 case AV_PIX_FMT_GRAY8A:
274 case AV_PIX_FMT_YUV420P9:
275 case AV_PIX_FMT_YUV420P10:
276 case AV_PIX_FMT_YUV420P12:
277 case AV_PIX_FMT_YUV420P14:
278 case AV_PIX_FMT_YUV420P16:
279 case AV_PIX_FMT_YUV422P9:
280 case AV_PIX_FMT_YUV422P10:
281 case AV_PIX_FMT_YUV422P12:
282 case AV_PIX_FMT_YUV422P14:
283 case AV_PIX_FMT_YUV422P16:
284 case AV_PIX_FMT_YUV444P9:
285 case AV_PIX_FMT_YUV444P10:
286 case AV_PIX_FMT_YUV444P12:
287 case AV_PIX_FMT_YUV444P14:
288 case AV_PIX_FMT_YUV444P16:
289 case AV_PIX_FMT_YUVA420P9:
290 case AV_PIX_FMT_YUVA420P10:
291 case AV_PIX_FMT_YUVA420P16:
292 case AV_PIX_FMT_YUVA422P9:
293 case AV_PIX_FMT_YUVA422P10:
294 case AV_PIX_FMT_YUVA422P16:
295 case AV_PIX_FMT_YUVA444P9:
296 case AV_PIX_FMT_YUVA444P10:
297 case AV_PIX_FMT_YUVA444P16:
298 s->version = 3;
299 break;
300 case AV_PIX_FMT_RGB32:
301 s->bitstream_bpp = 32;
302 break;
303 case AV_PIX_FMT_RGB24:
304 s->bitstream_bpp = 24;
305 break;
306 default:
307 av_log(avctx, AV_LOG_ERROR, "format not supported\n");
308 return AVERROR(EINVAL);
309 }
310 s->n = 1<<s->bps;
311 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
312
313 avctx->bits_per_coded_sample = s->bitstream_bpp;
314 s->decorrelate = s->bitstream_bpp >= 24 && !s->yuv && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
315 s->predictor = avctx->prediction_method;
316 s->interlaced = avctx->flags&CODEC_FLAG_INTERLACED_ME ? 1 : 0;
317 if (avctx->context_model == 1) {
318 s->context = avctx->context_model;
319 if (s->flags & (CODEC_FLAG_PASS1|CODEC_FLAG_PASS2)) {
320 av_log(avctx, AV_LOG_ERROR,
321 "context=1 is not compatible with "
322 "2 pass huffyuv encoding\n");
323 return AVERROR(EINVAL);
324 }
325 }else s->context= 0;
326
327 if (avctx->codec->id == AV_CODEC_ID_HUFFYUV) {
328 if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
329 av_log(avctx, AV_LOG_ERROR,
330 "Error: YV12 is not supported by huffyuv; use "
331 "vcodec=ffvhuff or format=422p\n");
332 return AVERROR(EINVAL);
333 }
334 if (avctx->context_model) {
335 av_log(avctx, AV_LOG_ERROR,
336 "Error: per-frame huffman tables are not supported "
337 "by huffyuv; use vcodec=ffvhuff\n");
338 return AVERROR(EINVAL);
339 }
340 if (s->version > 2) {
341 av_log(avctx, AV_LOG_ERROR,
342 "Error: ver>2 is not supported "
343 "by huffyuv; use vcodec=ffvhuff\n");
344 return AVERROR(EINVAL);
345 }
346 if (s->interlaced != ( s->height > 288 ))
347 av_log(avctx, AV_LOG_INFO,
348 "using huffyuv 2.2.0 or newer interlacing flag\n");
349 }
350
351 if (s->version > 3 && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
352 av_log(avctx, AV_LOG_ERROR, "Ver > 3 is under development, files encoded with it may not be decodable with future versions!!!\n"
353 "Use vstrict=-2 / -strict -2 to use it anyway.\n");
354 return AVERROR(EINVAL);
355 }
356
357 if (s->bitstream_bpp >= 24 && s->predictor == MEDIAN && s->version <= 2) {
358 av_log(avctx, AV_LOG_ERROR,
359 "Error: RGB is incompatible with median predictor\n");
360 return AVERROR(EINVAL);
361 }
362
363 ((uint8_t*)avctx->extradata)[0] = s->predictor | (s->decorrelate << 6);
364 ((uint8_t*)avctx->extradata)[2] = s->interlaced ? 0x10 : 0x20;
365 if (s->context)
366 ((uint8_t*)avctx->extradata)[2] |= 0x40;
367 if (s->version < 3) {
368 ((uint8_t*)avctx->extradata)[1] = s->bitstream_bpp;
369 ((uint8_t*)avctx->extradata)[3] = 0;
370 } else {
371 ((uint8_t*)avctx->extradata)[1] = ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2);
372 if (s->chroma)
373 ((uint8_t*)avctx->extradata)[2] |= s->yuv ? 1 : 2;
374 if (s->alpha)
375 ((uint8_t*)avctx->extradata)[2] |= 4;
376 ((uint8_t*)avctx->extradata)[3] = 1;
377 }
378 s->avctx->extradata_size = 4;
379
380 if (avctx->stats_in) {
381 char *p = avctx->stats_in;
382
383 for (i = 0; i < 4; i++)
384 for (j = 0; j < s->vlc_n; j++)
385 s->stats[i][j] = 1;
386
387 for (;;) {
388 for (i = 0; i < 4; i++) {
389 char *next;
390
391 for (j = 0; j < s->vlc_n; j++) {
392 s->stats[i][j] += strtol(p, &next, 0);
393 if (next == p) return -1;
394 p = next;
395 }
396 }
397 if (p[0] == 0 || p[1] == 0 || p[2] == 0) break;
398 }
399 } else {
400 for (i = 0; i < 4; i++)
401 for (j = 0; j < s->vlc_n; j++) {
402 int d = FFMIN(j, s->vlc_n - j);
403
404 s->stats[i][j] = 100000000 / (d*d + 1);
405 }
406 }
407
408 ret = store_huffman_tables(s, s->avctx->extradata + s->avctx->extradata_size);
409 if (ret < 0)
410 return ret;
411 s->avctx->extradata_size += ret;
412
413 if (s->context) {
414 for (i = 0; i < 4; i++) {
415 int pels = s->width * s->height / (i ? 40 : 10);
416 for (j = 0; j < s->vlc_n; j++) {
417 int d = FFMIN(j, s->vlc_n - j);
418 s->stats[i][j] = pels/(d*d + 1);
419 }
420 }
421 } else {
422 for (i = 0; i < 4; i++)
423 for (j = 0; j < s->vlc_n; j++)
424 s->stats[i][j]= 0;
425 }
426
427 if (ff_huffyuv_alloc_temp(s)) {
428 ff_huffyuv_common_end(s);
429 return AVERROR(ENOMEM);
430 }
431
432 s->picture_number=0;
433
434 return 0;
435}
436static int encode_422_bitstream(HYuvContext *s, int offset, int count)
437{
438 int i;
439 const uint8_t *y = s->temp[0] + offset;
440 const uint8_t *u = s->temp[1] + offset / 2;
441 const uint8_t *v = s->temp[2] + offset / 2;
442
443 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 2 * 4 * count) {
444 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
445 return -1;
446 }
447
448#define LOAD4\
449 int y0 = y[2 * i];\
450 int y1 = y[2 * i + 1];\
451 int u0 = u[i];\
452 int v0 = v[i];
453
454 count /= 2;
455
456 if (s->flags & CODEC_FLAG_PASS1) {
457 for(i = 0; i < count; i++) {
458 LOAD4;
459 s->stats[0][y0]++;
460 s->stats[1][u0]++;
461 s->stats[0][y1]++;
462 s->stats[2][v0]++;
463 }
464 }
465 if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
466 return 0;
467 if (s->context) {
468 for (i = 0; i < count; i++) {
469 LOAD4;
470 s->stats[0][y0]++;
471 put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);
472 s->stats[1][u0]++;
473 put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]);
474 s->stats[0][y1]++;
475 put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
476 s->stats[2][v0]++;
477 put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]);
478 }
479 } else {
480 for(i = 0; i < count; i++) {
481 LOAD4;
482 put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);
483 put_bits(&s->pb, s->len[1][u0], s->bits[1][u0]);
484 put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
485 put_bits(&s->pb, s->len[2][v0], s->bits[2][v0]);
486 }
487 }
488 return 0;
489}
490
491static int encode_plane_bitstream(HYuvContext *s, int width, int plane)
492{
493 int i, count = width/2;
494
495 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < count * s->bps / 2) {
496 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
497 return -1;
498 }
499
500#define LOADEND\
501 int y0 = s->temp[0][width-1];
502#define LOADEND_14\
503 int y0 = s->temp16[0][width-1] & mask;
504#define LOADEND_16\
505 int y0 = s->temp16[0][width-1];
506#define STATEND\
507 s->stats[plane][y0]++;
508#define STATEND_16\
509 s->stats[plane][y0>>2]++;
510#define WRITEEND\
511 put_bits(&s->pb, s->len[plane][y0], s->bits[plane][y0]);
512#define WRITEEND_16\
513 put_bits(&s->pb, s->len[plane][y0>>2], s->bits[plane][y0>>2]);\
514 put_bits(&s->pb, 2, y0&3);
515
516#define LOAD2\
517 int y0 = s->temp[0][2 * i];\
518 int y1 = s->temp[0][2 * i + 1];
519#define LOAD2_14\
520 int y0 = s->temp16[0][2 * i] & mask;\
521 int y1 = s->temp16[0][2 * i + 1] & mask;
522#define LOAD2_16\
523 int y0 = s->temp16[0][2 * i];\
524 int y1 = s->temp16[0][2 * i + 1];
525#define STAT2\
526 s->stats[plane][y0]++;\
527 s->stats[plane][y1]++;
528#define STAT2_16\
529 s->stats[plane][y0>>2]++;\
530 s->stats[plane][y1>>2]++;
531#define WRITE2\
532 put_bits(&s->pb, s->len[plane][y0], s->bits[plane][y0]);\
533 put_bits(&s->pb, s->len[plane][y1], s->bits[plane][y1]);
534#define WRITE2_16\
535 put_bits(&s->pb, s->len[plane][y0>>2], s->bits[plane][y0>>2]);\
536 put_bits(&s->pb, 2, y0&3);\
537 put_bits(&s->pb, s->len[plane][y1>>2], s->bits[plane][y1>>2]);\
538 put_bits(&s->pb, 2, y1&3);
539
540 if (s->bps <= 8) {
541 if (s->flags & CODEC_FLAG_PASS1) {
542 for (i = 0; i < count; i++) {
543 LOAD2;
544 STAT2;
545 }
546 if (width&1) {
547 LOADEND;
548 STATEND;
549 }
550 }
551 if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
552 return 0;
553
554 if (s->context) {
555 for (i = 0; i < count; i++) {
556 LOAD2;
557 STAT2;
558 WRITE2;
559 }
560 if (width&1) {
561 LOADEND;
562 STATEND;
563 WRITEEND;
564 }
565 } else {
566 for (i = 0; i < count; i++) {
567 LOAD2;
568 WRITE2;
569 }
570 if (width&1) {
571 LOADEND;
572 WRITEEND;
573 }
574 }
575 } else if (s->bps <= 14) {
576 int mask = s->n - 1;
577 if (s->flags & CODEC_FLAG_PASS1) {
578 for (i = 0; i < count; i++) {
579 LOAD2_14;
580 STAT2;
581 }
582 if (width&1) {
583 LOADEND_14;
584 STATEND;
585 }
586 }
587 if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
588 return 0;
589
590 if (s->context) {
591 for (i = 0; i < count; i++) {
592 LOAD2_14;
593 STAT2;
594 WRITE2;
595 }
596 if (width&1) {
597 LOADEND_14;
598 STATEND;
599 WRITEEND;
600 }
601 } else {
602 for (i = 0; i < count; i++) {
603 LOAD2_14;
604 WRITE2;
605 }
606 if (width&1) {
607 LOADEND_14;
608 WRITEEND;
609 }
610 }
611 } else {
612 if (s->flags & CODEC_FLAG_PASS1) {
613 for (i = 0; i < count; i++) {
614 LOAD2_16;
615 STAT2_16;
616 }
617 if (width&1) {
618 LOADEND_16;
619 STATEND_16;
620 }
621 }
622 if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
623 return 0;
624
625 if (s->context) {
626 for (i = 0; i < count; i++) {
627 LOAD2_16;
628 STAT2_16;
629 WRITE2_16;
630 }
631 if (width&1) {
632 LOADEND_16;
633 STATEND_16;
634 WRITEEND_16;
635 }
636 } else {
637 for (i = 0; i < count; i++) {
638 LOAD2_16;
639 WRITE2_16;
640 }
641 if (width&1) {
642 LOADEND_16;
643 WRITEEND_16;
644 }
645 }
646 }
647#undef LOAD2
648#undef STAT2
649#undef WRITE2
650 return 0;
651}
652
653static int encode_gray_bitstream(HYuvContext *s, int count)
654{
655 int i;
656
657 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 4 * count) {
658 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
659 return -1;
660 }
661
662#define LOAD2\
663 int y0 = s->temp[0][2 * i];\
664 int y1 = s->temp[0][2 * i + 1];
665#define STAT2\
666 s->stats[0][y0]++;\
667 s->stats[0][y1]++;
668#define WRITE2\
669 put_bits(&s->pb, s->len[0][y0], s->bits[0][y0]);\
670 put_bits(&s->pb, s->len[0][y1], s->bits[0][y1]);
671
672 count /= 2;
673
674 if (s->flags & CODEC_FLAG_PASS1) {
675 for (i = 0; i < count; i++) {
676 LOAD2;
677 STAT2;
678 }
679 }
680 if (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)
681 return 0;
682
683 if (s->context) {
684 for (i = 0; i < count; i++) {
685 LOAD2;
686 STAT2;
687 WRITE2;
688 }
689 } else {
690 for (i = 0; i < count; i++) {
691 LOAD2;
692 WRITE2;
693 }
694 }
695 return 0;
696}
697
698static inline int encode_bgra_bitstream(HYuvContext *s, int count, int planes)
699{
700 int i;
701
702 if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) <
703 4 * planes * count) {
704 av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
705 return -1;
706 }
707
708#define LOAD_GBRA \
709 int g = s->temp[0][planes == 3 ? 3 * i + 1 : 4 * i + G]; \
710 int b =(s->temp[0][planes == 3 ? 3 * i + 2 : 4 * i + B] - g) & 0xFF;\
711 int r =(s->temp[0][planes == 3 ? 3 * i + 0 : 4 * i + R] - g) & 0xFF;\
712 int a = s->temp[0][planes * i + A];
713
714#define STAT_BGRA \
715 s->stats[0][b]++; \
716 s->stats[1][g]++; \
717 s->stats[2][r]++; \
718 if (planes == 4) \
719 s->stats[2][a]++;
720
721#define WRITE_GBRA \
722 put_bits(&s->pb, s->len[1][g], s->bits[1][g]); \
723 put_bits(&s->pb, s->len[0][b], s->bits[0][b]); \
724 put_bits(&s->pb, s->len[2][r], s->bits[2][r]); \
725 if (planes == 4) \
726 put_bits(&s->pb, s->len[2][a], s->bits[2][a]);
727
728 if ((s->flags & CODEC_FLAG_PASS1) &&
729 (s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
730 for (i = 0; i < count; i++) {
731 LOAD_GBRA;
732 STAT_BGRA;
733 }
734 } else if (s->context || (s->flags & CODEC_FLAG_PASS1)) {
735 for (i = 0; i < count; i++) {
736 LOAD_GBRA;
737 STAT_BGRA;
738 WRITE_GBRA;
739 }
740 } else {
741 for (i = 0; i < count; i++) {
742 LOAD_GBRA;
743 WRITE_GBRA;
744 }
745 }
746 return 0;
747}
748
749static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
750 const AVFrame *pict, int *got_packet)
751{
752 HYuvContext *s = avctx->priv_data;
753 const int width = s->width;
754 const int width2 = s->width>>1;
755 const int height = s->height;
756 const int fake_ystride = s->interlaced ? pict->linesize[0]*2 : pict->linesize[0];
757 const int fake_ustride = s->interlaced ? pict->linesize[1]*2 : pict->linesize[1];
758 const int fake_vstride = s->interlaced ? pict->linesize[2]*2 : pict->linesize[2];
759 const AVFrame * const p = pict;
760 int i, j, size = 0, ret;
761
762 if ((ret = ff_alloc_packet2(avctx, pkt, width * height * 3 * 4 + FF_MIN_BUFFER_SIZE)) < 0)
763 return ret;
764
765 if (s->context) {
766 size = store_huffman_tables(s, pkt->data);
767 if (size < 0)
768 return size;
769
770 for (i = 0; i < 4; i++)
771 for (j = 0; j < s->vlc_n; j++)
772 s->stats[i][j] >>= 1;
773 }
774
775 init_put_bits(&s->pb, pkt->data + size, pkt->size - size);
776
777 if (avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
778 avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
779 int lefty, leftu, leftv, y, cy;
780
781 put_bits(&s->pb, 8, leftv = p->data[2][0]);
782 put_bits(&s->pb, 8, lefty = p->data[0][1]);
783 put_bits(&s->pb, 8, leftu = p->data[1][0]);
784 put_bits(&s->pb, 8, p->data[0][0]);
785
786 lefty = sub_left_prediction(s, s->temp[0], p->data[0], width , 0);
787 leftu = sub_left_prediction(s, s->temp[1], p->data[1], width2, 0);
788 leftv = sub_left_prediction(s, s->temp[2], p->data[2], width2, 0);
789
790 encode_422_bitstream(s, 2, width-2);
791
792 if (s->predictor==MEDIAN) {
793 int lefttopy, lefttopu, lefttopv;
794 cy = y = 1;
795 if (s->interlaced) {
796 lefty = sub_left_prediction(s, s->temp[0], p->data[0] + p->linesize[0], width , lefty);
797 leftu = sub_left_prediction(s, s->temp[1], p->data[1] + p->linesize[1], width2, leftu);
798 leftv = sub_left_prediction(s, s->temp[2], p->data[2] + p->linesize[2], width2, leftv);
799
800 encode_422_bitstream(s, 0, width);
801 y++; cy++;
802 }
803
804 lefty = sub_left_prediction(s, s->temp[0], p->data[0] + fake_ystride, 4, lefty);
805 leftu = sub_left_prediction(s, s->temp[1], p->data[1] + fake_ustride, 2, leftu);
806 leftv = sub_left_prediction(s, s->temp[2], p->data[2] + fake_vstride, 2, leftv);
807
808 encode_422_bitstream(s, 0, 4);
809
810 lefttopy = p->data[0][3];
811 lefttopu = p->data[1][1];
812 lefttopv = p->data[2][1];
813 s->hencdsp.sub_hfyu_median_pred(s->temp[0], p->data[0] + 4, p->data[0] + fake_ystride + 4, width - 4, &lefty, &lefttopy);
814 s->hencdsp.sub_hfyu_median_pred(s->temp[1], p->data[1] + 2, p->data[1] + fake_ustride + 2, width2 - 2, &leftu, &lefttopu);
815 s->hencdsp.sub_hfyu_median_pred(s->temp[2], p->data[2] + 2, p->data[2] + fake_vstride + 2, width2 - 2, &leftv, &lefttopv);
816 encode_422_bitstream(s, 0, width - 4);
817 y++; cy++;
818
819 for (; y < height; y++,cy++) {
820 uint8_t *ydst, *udst, *vdst;
821
822 if (s->bitstream_bpp == 12) {
823 while (2 * cy > y) {
824 ydst = p->data[0] + p->linesize[0] * y;
825 s->hencdsp.sub_hfyu_median_pred(s->temp[0], ydst - fake_ystride, ydst, width, &lefty, &lefttopy);
826 encode_gray_bitstream(s, width);
827 y++;
828 }
829 if (y >= height) break;
830 }
831 ydst = p->data[0] + p->linesize[0] * y;
832 udst = p->data[1] + p->linesize[1] * cy;
833 vdst = p->data[2] + p->linesize[2] * cy;
834
835 s->hencdsp.sub_hfyu_median_pred(s->temp[0], ydst - fake_ystride, ydst, width, &lefty, &lefttopy);
836 s->hencdsp.sub_hfyu_median_pred(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
837 s->hencdsp.sub_hfyu_median_pred(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv);
838
839 encode_422_bitstream(s, 0, width);
840 }
841 } else {
842 for (cy = y = 1; y < height; y++, cy++) {
843 uint8_t *ydst, *udst, *vdst;
844
845 /* encode a luma only line & y++ */
846 if (s->bitstream_bpp == 12) {
847 ydst = p->data[0] + p->linesize[0] * y;
848
849 if (s->predictor == PLANE && s->interlaced < y) {
850 s->hencdsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
851
852 lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
853 } else {
854 lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty);
855 }
856 encode_gray_bitstream(s, width);
857 y++;
858 if (y >= height) break;
859 }
860
861 ydst = p->data[0] + p->linesize[0] * y;
862 udst = p->data[1] + p->linesize[1] * cy;
863 vdst = p->data[2] + p->linesize[2] * cy;
864
865 if (s->predictor == PLANE && s->interlaced < cy) {
866 s->hencdsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
867 s->hencdsp.diff_bytes(s->temp[2], udst, udst - fake_ustride, width2);
868 s->hencdsp.diff_bytes(s->temp[2] + width2, vdst, vdst - fake_vstride, width2);
869
870 lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
871 leftu = sub_left_prediction(s, s->temp[1], s->temp[2], width2, leftu);
872 leftv = sub_left_prediction(s, s->temp[2], s->temp[2] + width2, width2, leftv);
873 } else {
874 lefty = sub_left_prediction(s, s->temp[0], ydst, width , lefty);
875 leftu = sub_left_prediction(s, s->temp[1], udst, width2, leftu);
876 leftv = sub_left_prediction(s, s->temp[2], vdst, width2, leftv);
877 }
878
879 encode_422_bitstream(s, 0, width);
880 }
881 }
882 } else if(avctx->pix_fmt == AV_PIX_FMT_RGB32) {
883 uint8_t *data = p->data[0] + (height - 1) * p->linesize[0];
884 const int stride = -p->linesize[0];
885 const int fake_stride = -fake_ystride;
886 int y;
887 int leftr, leftg, leftb, lefta;
888
889 put_bits(&s->pb, 8, lefta = data[A]);
890 put_bits(&s->pb, 8, leftr = data[R]);
891 put_bits(&s->pb, 8, leftg = data[G]);
892 put_bits(&s->pb, 8, leftb = data[B]);
893
894 sub_left_prediction_bgr32(s, s->temp[0], data + 4, width - 1,
895 &leftr, &leftg, &leftb, &lefta);
896 encode_bgra_bitstream(s, width - 1, 4);
897
898 for (y = 1; y < s->height; y++) {
899 uint8_t *dst = data + y*stride;
900 if (s->predictor == PLANE && s->interlaced < y) {
901 s->hencdsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4);
902 sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width,
903 &leftr, &leftg, &leftb, &lefta);
904 } else {
905 sub_left_prediction_bgr32(s, s->temp[0], dst, width,
906 &leftr, &leftg, &leftb, &lefta);
907 }
908 encode_bgra_bitstream(s, width, 4);
909 }
910 } else if (avctx->pix_fmt == AV_PIX_FMT_RGB24) {
911 uint8_t *data = p->data[0] + (height - 1) * p->linesize[0];
912 const int stride = -p->linesize[0];
913 const int fake_stride = -fake_ystride;
914 int y;
915 int leftr, leftg, leftb;
916
917 put_bits(&s->pb, 8, leftr = data[0]);
918 put_bits(&s->pb, 8, leftg = data[1]);
919 put_bits(&s->pb, 8, leftb = data[2]);
920 put_bits(&s->pb, 8, 0);
921
922 sub_left_prediction_rgb24(s, s->temp[0], data + 3, width - 1,
923 &leftr, &leftg, &leftb);
924 encode_bgra_bitstream(s, width-1, 3);
925
926 for (y = 1; y < s->height; y++) {
927 uint8_t *dst = data + y * stride;
928 if (s->predictor == PLANE && s->interlaced < y) {
929 s->hencdsp.diff_bytes(s->temp[1], dst, dst - fake_stride,
930 width * 3);
931 sub_left_prediction_rgb24(s, s->temp[0], s->temp[1], width,
932 &leftr, &leftg, &leftb);
933 } else {
934 sub_left_prediction_rgb24(s, s->temp[0], dst, width,
935 &leftr, &leftg, &leftb);
936 }
937 encode_bgra_bitstream(s, width, 3);
938 }
939 } else if (s->version > 2) {
940 int plane;
941 for (plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
942 int left, y;
943 int w = width;
944 int h = height;
945 int fake_stride = fake_ystride;
946
947 if (s->chroma && (plane == 1 || plane == 2)) {
948 w >>= s->chroma_h_shift;
949 h >>= s->chroma_v_shift;
950 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
951 }
952
953 left = sub_left_prediction(s, s->temp[0], p->data[plane], w , 0);
954
955 encode_plane_bitstream(s, w, plane);
956
957 if (s->predictor==MEDIAN) {
958 int lefttop;
959 y = 1;
960 if (s->interlaced) {
961 left = sub_left_prediction(s, s->temp[0], p->data[plane] + p->linesize[plane], w , left);
962
963 encode_plane_bitstream(s, w, plane);
964 y++;
965 }
966
967 lefttop = p->data[plane][0];
968
969 for (; y < h; y++) {
970 uint8_t *dst = p->data[plane] + p->linesize[plane] * y;
971
972 sub_median_prediction(s, s->temp[0], dst - fake_stride, dst, w , &left, &lefttop);
973
974 encode_plane_bitstream(s, w, plane);
975 }
976 } else {
977 for (y = 1; y < h; y++) {
978 uint8_t *dst = p->data[plane] + p->linesize[plane] * y;
979
980 if (s->predictor == PLANE && s->interlaced < y) {
981 diff_bytes(s, s->temp[1], dst, dst - fake_stride, w);
982
983 left = sub_left_prediction(s, s->temp[0], s->temp[1], w , left);
984 } else {
985 left = sub_left_prediction(s, s->temp[0], dst, w , left);
986 }
987
988 encode_plane_bitstream(s, w, plane);
989 }
990 }
991 }
992 } else {
993 av_log(avctx, AV_LOG_ERROR, "Format not supported!\n");
994 }
995 emms_c();
996
997 size += (put_bits_count(&s->pb) + 31) / 8;
998 put_bits(&s->pb, 16, 0);
999 put_bits(&s->pb, 15, 0);
1000 size /= 4;
1001
1002 if ((s->flags&CODEC_FLAG_PASS1) && (s->picture_number & 31) == 0) {
1003 int j;
1004 char *p = avctx->stats_out;
1005 char *end = p + STATS_OUT_SIZE;
1006 for (i = 0; i < 4; i++) {
1007 for (j = 0; j < s->vlc_n; j++) {
1008 snprintf(p, end-p, "%"PRIu64" ", s->stats[i][j]);
1009 p += strlen(p);
1010 s->stats[i][j]= 0;
1011 }
1012 snprintf(p, end-p, "\n");
1013 p++;
1014 if (end <= p)
1015 return AVERROR(ENOMEM);
1016 }
1017 } else if (avctx->stats_out)
1018 avctx->stats_out[0] = '\0';
1019 if (!(s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
1020 flush_put_bits(&s->pb);
1021 s->bdsp.bswap_buf((uint32_t *) pkt->data, (uint32_t *) pkt->data, size);
1022 }
1023
1024 s->picture_number++;
1025
1026 pkt->size = size * 4;
1027 pkt->flags |= AV_PKT_FLAG_KEY;
1028 *got_packet = 1;
1029
1030 return 0;
1031}
1032
1033static av_cold int encode_end(AVCodecContext *avctx)
1034{
1035 HYuvContext *s = avctx->priv_data;
1036
1037 ff_huffyuv_common_end(s);
1038
1039 av_freep(&avctx->extradata);
1040 av_freep(&avctx->stats_out);
1041
1042 av_frame_free(&avctx->coded_frame);
1043
1044 return 0;
1045}
1046
1047static const AVOption options[] = {
1048 { "non_deterministic", "Allow multithreading for e.g. context=1 at the expense of determinism",
1049 offsetof(HYuvContext, non_determ), AV_OPT_TYPE_INT, { .i64 = 1 },
1050 0, 1, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
1051 { NULL },
1052};
1053
1054static const AVClass normal_class = {
1055 .class_name = "huffyuv",
1056 .item_name = av_default_item_name,
1057 .option = options,
1058 .version = LIBAVUTIL_VERSION_INT,
1059};
1060
1061static const AVClass ff_class = {
1062 .class_name = "ffvhuff",
1063 .item_name = av_default_item_name,
1064 .option = options,
1065 .version = LIBAVUTIL_VERSION_INT,
1066};
1067
1068AVCodec ff_huffyuv_encoder = {
1069 .name = "huffyuv",
1070 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1071 .type = AVMEDIA_TYPE_VIDEO,
1072 .id = AV_CODEC_ID_HUFFYUV,
1073 .priv_data_size = sizeof(HYuvContext),
1074 .init = encode_init,
1075 .encode2 = encode_frame,
1076 .close = encode_end,
1077 .capabilities = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY,
1078 .priv_class = &normal_class,
1079 .pix_fmts = (const enum AVPixelFormat[]){
1080 AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB24,
1081 AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
1082 },
1083};
1084
1085#if CONFIG_FFVHUFF_ENCODER
1086AVCodec ff_ffvhuff_encoder = {
1087 .name = "ffvhuff",
1088 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1089 .type = AVMEDIA_TYPE_VIDEO,
1090 .id = AV_CODEC_ID_FFVHUFF,
1091 .priv_data_size = sizeof(HYuvContext),
1092 .init = encode_init,
1093 .encode2 = encode_frame,
1094 .close = encode_end,
1095 .capabilities = CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY,
1096 .priv_class = &ff_class,
1097 .pix_fmts = (const enum AVPixelFormat[]){
1098 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV411P,
1099 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
1100 AV_PIX_FMT_GBRP,
1101 AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
1102 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
1103 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
1104 AV_PIX_FMT_GBRAP,
1105 AV_PIX_FMT_GRAY8A,
1106 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV420P16,
1107 AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV422P16,
1108 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV444P16,
1109 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
1110 AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P16,
1111 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P16,
1112 AV_PIX_FMT_RGB24,
1113 AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
1114 },
1115};
1116#endif
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