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utvideoenc.c
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1 /*
2  * Ut Video encoder
3  * Copyright (c) 2012 Jan Ekström
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  * Ut Video encoder
25  */
26 
27 #include "libavutil/imgutils.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/opt.h"
30 
31 #include "avcodec.h"
32 #include "internal.h"
33 #include "bswapdsp.h"
34 #include "bytestream.h"
35 #include "put_bits.h"
36 #include "huffyuvencdsp.h"
37 #include "mathops.h"
38 #include "utvideo.h"
39 #include "huffman.h"
40 
41 /* Compare huffentry symbols */
42 static int huff_cmp_sym(const void *a, const void *b)
43 {
44  const HuffEntry *aa = a, *bb = b;
45  return aa->sym - bb->sym;
46 }
47 
49 {
50  UtvideoContext *c = avctx->priv_data;
51  int i;
52 
53  av_freep(&c->slice_bits);
54  for (i = 0; i < 4; i++)
55  av_freep(&c->slice_buffer[i]);
56 
57  return 0;
58 }
59 
61 {
62  UtvideoContext *c = avctx->priv_data;
63  int i, subsampled_height;
64  uint32_t original_format;
65 
66  c->avctx = avctx;
67  c->frame_info_size = 4;
68  c->slice_stride = FFALIGN(avctx->width, 32);
69 
70  switch (avctx->pix_fmt) {
71  case AV_PIX_FMT_RGB24:
72  c->planes = 3;
73  avctx->codec_tag = MKTAG('U', 'L', 'R', 'G');
74  original_format = UTVIDEO_RGB;
75  break;
76  case AV_PIX_FMT_RGBA:
77  c->planes = 4;
78  avctx->codec_tag = MKTAG('U', 'L', 'R', 'A');
79  original_format = UTVIDEO_RGBA;
80  break;
81  case AV_PIX_FMT_YUV420P:
82  if (avctx->width & 1 || avctx->height & 1) {
83  av_log(avctx, AV_LOG_ERROR,
84  "4:2:0 video requires even width and height.\n");
85  return AVERROR_INVALIDDATA;
86  }
87  c->planes = 3;
88  if (avctx->colorspace == AVCOL_SPC_BT709)
89  avctx->codec_tag = MKTAG('U', 'L', 'H', '0');
90  else
91  avctx->codec_tag = MKTAG('U', 'L', 'Y', '0');
92  original_format = UTVIDEO_420;
93  break;
94  case AV_PIX_FMT_YUV422P:
95  if (avctx->width & 1) {
96  av_log(avctx, AV_LOG_ERROR,
97  "4:2:2 video requires even width.\n");
98  return AVERROR_INVALIDDATA;
99  }
100  c->planes = 3;
101  if (avctx->colorspace == AVCOL_SPC_BT709)
102  avctx->codec_tag = MKTAG('U', 'L', 'H', '2');
103  else
104  avctx->codec_tag = MKTAG('U', 'L', 'Y', '2');
105  original_format = UTVIDEO_422;
106  break;
107  default:
108  av_log(avctx, AV_LOG_ERROR, "Unknown pixel format: %d\n",
109  avctx->pix_fmt);
110  return AVERROR_INVALIDDATA;
111  }
112 
113  ff_bswapdsp_init(&c->bdsp);
115 
116 #if FF_API_PRIVATE_OPT
118  /* Check the prediction method, and error out if unsupported */
119  if (avctx->prediction_method < 0 || avctx->prediction_method > 4) {
120  av_log(avctx, AV_LOG_WARNING,
121  "Prediction method %d is not supported in Ut Video.\n",
122  avctx->prediction_method);
124  }
125 
126  if (avctx->prediction_method == FF_PRED_PLANE) {
127  av_log(avctx, AV_LOG_ERROR,
128  "Plane prediction is not supported in Ut Video.\n");
130  }
131 
132  /* Convert from libavcodec prediction type to Ut Video's */
133  if (avctx->prediction_method)
136 #endif
137 
138  if (c->frame_pred == PRED_GRADIENT) {
139  av_log(avctx, AV_LOG_ERROR, "Gradient prediction is not supported.\n");
141  }
142 
143  /*
144  * Check the asked slice count for obviously invalid
145  * values (> 256 or negative).
146  */
147  if (avctx->slices > 256 || avctx->slices < 0) {
148  av_log(avctx, AV_LOG_ERROR,
149  "Slice count %d is not supported in Ut Video (theoretical range is 0-256).\n",
150  avctx->slices);
151  return AVERROR(EINVAL);
152  }
153 
154  /* Check that the slice count is not larger than the subsampled height */
155  subsampled_height = avctx->height >> av_pix_fmt_desc_get(avctx->pix_fmt)->log2_chroma_h;
156  if (avctx->slices > subsampled_height) {
157  av_log(avctx, AV_LOG_ERROR,
158  "Slice count %d is larger than the subsampling-applied height %d.\n",
159  avctx->slices, subsampled_height);
160  return AVERROR(EINVAL);
161  }
162 
163  /* extradata size is 4 * 32 bits */
164  avctx->extradata_size = 16;
165 
166  avctx->extradata = av_mallocz(avctx->extradata_size +
168 
169  if (!avctx->extradata) {
170  av_log(avctx, AV_LOG_ERROR, "Could not allocate extradata.\n");
171  utvideo_encode_close(avctx);
172  return AVERROR(ENOMEM);
173  }
174 
175  for (i = 0; i < c->planes; i++) {
176  c->slice_buffer[i] = av_malloc(c->slice_stride * (avctx->height + 2) +
178  if (!c->slice_buffer[i]) {
179  av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 1.\n");
180  utvideo_encode_close(avctx);
181  return AVERROR(ENOMEM);
182  }
183  }
184 
185  /*
186  * Set the version of the encoder.
187  * Last byte is "implementation ID", which is
188  * obtained from the creator of the format.
189  * Libavcodec has been assigned with the ID 0xF0.
190  */
191  AV_WB32(avctx->extradata, MKTAG(1, 0, 0, 0xF0));
192 
193  /*
194  * Set the "original format"
195  * Not used for anything during decoding.
196  */
197  AV_WL32(avctx->extradata + 4, original_format);
198 
199  /* Write 4 as the 'frame info size' */
200  AV_WL32(avctx->extradata + 8, c->frame_info_size);
201 
202  /*
203  * Set how many slices are going to be used.
204  * By default uses multiple slices depending on the subsampled height.
205  * This enables multithreading in the official decoder.
206  */
207  if (!avctx->slices) {
208  c->slices = subsampled_height / 120;
209 
210  if (!c->slices)
211  c->slices = 1;
212  else if (c->slices > 256)
213  c->slices = 256;
214  } else {
215  c->slices = avctx->slices;
216  }
217 
218  /* Set compression mode */
219  c->compression = COMP_HUFF;
220 
221  /*
222  * Set the encoding flags:
223  * - Slice count minus 1
224  * - Interlaced encoding mode flag, set to zero for now.
225  * - Compression mode (none/huff)
226  * And write the flags.
227  */
228  c->flags = (c->slices - 1) << 24;
229  c->flags |= 0 << 11; // bit field to signal interlaced encoding mode
230  c->flags |= c->compression;
231 
232  AV_WL32(avctx->extradata + 12, c->flags);
233 
234  return 0;
235 }
236 
237 static void mangle_rgb_planes(uint8_t *dst[4], int dst_stride, uint8_t *src,
238  int step, int stride, int width, int height)
239 {
240  int i, j;
241  int k = 2 * dst_stride;
242  unsigned int g;
243 
244  for (j = 0; j < height; j++) {
245  if (step == 3) {
246  for (i = 0; i < width * step; i += step) {
247  g = src[i + 1];
248  dst[0][k] = g;
249  g += 0x80;
250  dst[1][k] = src[i + 2] - g;
251  dst[2][k] = src[i + 0] - g;
252  k++;
253  }
254  } else {
255  for (i = 0; i < width * step; i += step) {
256  g = src[i + 1];
257  dst[0][k] = g;
258  g += 0x80;
259  dst[1][k] = src[i + 2] - g;
260  dst[2][k] = src[i + 0] - g;
261  dst[3][k] = src[i + 3];
262  k++;
263  }
264  }
265  k += dst_stride - width;
266  src += stride;
267  }
268 }
269 
270 /* Write data to a plane with left prediction */
271 static void left_predict(uint8_t *src, uint8_t *dst, int stride,
272  int width, int height)
273 {
274  int i, j;
275  uint8_t prev;
276 
277  prev = 0x80; /* Set the initial value */
278  for (j = 0; j < height; j++) {
279  for (i = 0; i < width; i++) {
280  *dst++ = src[i] - prev;
281  prev = src[i];
282  }
283  src += stride;
284  }
285 }
286 
287 /* Write data to a plane with median prediction */
289  int width, int height)
290 {
291  int i, j;
292  int A, B;
293  uint8_t prev;
294 
295  /* First line uses left neighbour prediction */
296  prev = 0x80; /* Set the initial value */
297  for (i = 0; i < width; i++) {
298  *dst++ = src[i] - prev;
299  prev = src[i];
300  }
301 
302  if (height == 1)
303  return;
304 
305  src += stride;
306 
307  /*
308  * Second line uses top prediction for the first sample,
309  * and median for the rest.
310  */
311  A = B = 0;
312 
313  /* Rest of the coded part uses median prediction */
314  for (j = 1; j < height; j++) {
315  c->hdsp.sub_hfyu_median_pred(dst, src - stride, src, width, &A, &B);
316  dst += width;
317  src += stride;
318  }
319 }
320 
321 /* Count the usage of values in a plane */
322 static void count_usage(uint8_t *src, int width,
323  int height, uint64_t *counts)
324 {
325  int i, j;
326 
327  for (j = 0; j < height; j++) {
328  for (i = 0; i < width; i++) {
329  counts[src[i]]++;
330  }
331  src += width;
332  }
333 }
334 
335 /* Calculate the actual huffman codes from the code lengths */
336 static void calculate_codes(HuffEntry *he)
337 {
338  int last, i;
339  uint32_t code;
340 
341  qsort(he, 256, sizeof(*he), ff_ut_huff_cmp_len);
342 
343  last = 255;
344  while (he[last].len == 255 && last)
345  last--;
346 
347  code = 1;
348  for (i = last; i >= 0; i--) {
349  he[i].code = code >> (32 - he[i].len);
350  code += 0x80000000u >> (he[i].len - 1);
351  }
352 
353  qsort(he, 256, sizeof(*he), huff_cmp_sym);
354 }
355 
356 /* Write huffman bit codes to a memory block */
357 static int write_huff_codes(uint8_t *src, uint8_t *dst, int dst_size,
358  int width, int height, HuffEntry *he)
359 {
360  PutBitContext pb;
361  int i, j;
362  int count;
363 
364  init_put_bits(&pb, dst, dst_size);
365 
366  /* Write the codes */
367  for (j = 0; j < height; j++) {
368  for (i = 0; i < width; i++)
369  put_bits(&pb, he[src[i]].len, he[src[i]].code);
370 
371  src += width;
372  }
373 
374  /* Pad output to a 32-bit boundary */
375  count = put_bits_count(&pb) & 0x1F;
376 
377  if (count)
378  put_bits(&pb, 32 - count, 0);
379 
380  /* Get the amount of bits written */
381  count = put_bits_count(&pb);
382 
383  /* Flush the rest with zeroes */
384  flush_put_bits(&pb);
385 
386  return count;
387 }
388 
390  uint8_t *dst, int stride, int plane_no,
391  int width, int height, PutByteContext *pb)
392 {
393  UtvideoContext *c = avctx->priv_data;
394  uint8_t lengths[256];
395  uint64_t counts[256] = { 0 };
396 
397  HuffEntry he[256];
398 
399  uint32_t offset = 0, slice_len = 0;
400  const int cmask = ~(!plane_no && avctx->pix_fmt == AV_PIX_FMT_YUV420P);
401  int i, sstart, send = 0;
402  int symbol;
403  int ret;
404 
405  /* Do prediction / make planes */
406  switch (c->frame_pred) {
407  case PRED_NONE:
408  for (i = 0; i < c->slices; i++) {
409  sstart = send;
410  send = height * (i + 1) / c->slices & cmask;
411  av_image_copy_plane(dst + sstart * width, width,
412  src + sstart * stride, stride,
413  width, send - sstart);
414  }
415  break;
416  case PRED_LEFT:
417  for (i = 0; i < c->slices; i++) {
418  sstart = send;
419  send = height * (i + 1) / c->slices & cmask;
420  left_predict(src + sstart * stride, dst + sstart * width,
421  stride, width, send - sstart);
422  }
423  break;
424  case PRED_MEDIAN:
425  for (i = 0; i < c->slices; i++) {
426  sstart = send;
427  send = height * (i + 1) / c->slices & cmask;
428  median_predict(c, src + sstart * stride, dst + sstart * width,
429  stride, width, send - sstart);
430  }
431  break;
432  default:
433  av_log(avctx, AV_LOG_ERROR, "Unknown prediction mode: %d\n",
434  c->frame_pred);
436  }
437 
438  /* Count the usage of values */
439  count_usage(dst, width, height, counts);
440 
441  /* Check for a special case where only one symbol was used */
442  for (symbol = 0; symbol < 256; symbol++) {
443  /* If non-zero count is found, see if it matches width * height */
444  if (counts[symbol]) {
445  /* Special case if only one symbol was used */
446  if (counts[symbol] == width * (int64_t)height) {
447  /*
448  * Write a zero for the single symbol
449  * used in the plane, else 0xFF.
450  */
451  for (i = 0; i < 256; i++) {
452  if (i == symbol)
453  bytestream2_put_byte(pb, 0);
454  else
455  bytestream2_put_byte(pb, 0xFF);
456  }
457 
458  /* Write zeroes for lengths */
459  for (i = 0; i < c->slices; i++)
460  bytestream2_put_le32(pb, 0);
461 
462  /* And that's all for that plane folks */
463  return 0;
464  }
465  break;
466  }
467  }
468 
469  /* Calculate huffman lengths */
470  if ((ret = ff_huff_gen_len_table(lengths, counts, 256, 1)) < 0)
471  return ret;
472 
473  /*
474  * Write the plane's header into the output packet:
475  * - huffman code lengths (256 bytes)
476  * - slice end offsets (gotten from the slice lengths)
477  */
478  for (i = 0; i < 256; i++) {
479  bytestream2_put_byte(pb, lengths[i]);
480 
481  he[i].len = lengths[i];
482  he[i].sym = i;
483  }
484 
485  /* Calculate the huffman codes themselves */
486  calculate_codes(he);
487 
488  send = 0;
489  for (i = 0; i < c->slices; i++) {
490  sstart = send;
491  send = height * (i + 1) / c->slices & cmask;
492 
493  /*
494  * Write the huffman codes to a buffer,
495  * get the offset in bits and convert to bytes.
496  */
497  offset += write_huff_codes(dst + sstart * width, c->slice_bits,
498  width * height + 4, width,
499  send - sstart, he) >> 3;
500 
501  slice_len = offset - slice_len;
502 
503  /* Byteswap the written huffman codes */
504  c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
505  (uint32_t *) c->slice_bits,
506  slice_len >> 2);
507 
508  /* Write the offset to the stream */
509  bytestream2_put_le32(pb, offset);
510 
511  /* Seek to the data part of the packet */
512  bytestream2_seek_p(pb, 4 * (c->slices - i - 1) +
513  offset - slice_len, SEEK_CUR);
514 
515  /* Write the slices' data into the output packet */
516  bytestream2_put_buffer(pb, c->slice_bits, slice_len);
517 
518  /* Seek back to the slice offsets */
519  bytestream2_seek_p(pb, -4 * (c->slices - i - 1) - offset,
520  SEEK_CUR);
521 
522  slice_len = offset;
523  }
524 
525  /* And at the end seek to the end of written slice(s) */
526  bytestream2_seek_p(pb, offset, SEEK_CUR);
527 
528  return 0;
529 }
530 
532  const AVFrame *pic, int *got_packet)
533 {
534  UtvideoContext *c = avctx->priv_data;
535  PutByteContext pb;
536 
537  uint32_t frame_info;
538 
539  uint8_t *dst;
540 
541  int width = avctx->width, height = avctx->height;
542  int i, ret = 0;
543 
544  /* Allocate a new packet if needed, and set it to the pointer dst */
545  ret = ff_alloc_packet2(avctx, pkt, (256 + 4 * c->slices + width * height) *
546  c->planes + 4, 0);
547 
548  if (ret < 0)
549  return ret;
550 
551  dst = pkt->data;
552 
553  bytestream2_init_writer(&pb, dst, pkt->size);
554 
555  av_fast_padded_malloc(&c->slice_bits, &c->slice_bits_size, width * height + 4);
556 
557  if (!c->slice_bits) {
558  av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer 2.\n");
559  return AVERROR(ENOMEM);
560  }
561 
562  /* In case of RGB, mangle the planes to Ut Video's format */
563  if (avctx->pix_fmt == AV_PIX_FMT_RGBA || avctx->pix_fmt == AV_PIX_FMT_RGB24)
565  c->planes, pic->linesize[0], width, height);
566 
567  /* Deal with the planes */
568  switch (avctx->pix_fmt) {
569  case AV_PIX_FMT_RGB24:
570  case AV_PIX_FMT_RGBA:
571  for (i = 0; i < c->planes; i++) {
572  ret = encode_plane(avctx, c->slice_buffer[i] + 2 * c->slice_stride,
573  c->slice_buffer[i], c->slice_stride, i,
574  width, height, &pb);
575 
576  if (ret) {
577  av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i);
578  return ret;
579  }
580  }
581  break;
582  case AV_PIX_FMT_YUV422P:
583  for (i = 0; i < c->planes; i++) {
584  ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0],
585  pic->linesize[i], i, width >> !!i, height, &pb);
586 
587  if (ret) {
588  av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i);
589  return ret;
590  }
591  }
592  break;
593  case AV_PIX_FMT_YUV420P:
594  for (i = 0; i < c->planes; i++) {
595  ret = encode_plane(avctx, pic->data[i], c->slice_buffer[0],
596  pic->linesize[i], i, width >> !!i, height >> !!i,
597  &pb);
598 
599  if (ret) {
600  av_log(avctx, AV_LOG_ERROR, "Error encoding plane %d.\n", i);
601  return ret;
602  }
603  }
604  break;
605  default:
606  av_log(avctx, AV_LOG_ERROR, "Unknown pixel format: %d\n",
607  avctx->pix_fmt);
608  return AVERROR_INVALIDDATA;
609  }
610 
611  /*
612  * Write frame information (LE 32-bit unsigned)
613  * into the output packet.
614  * Contains the prediction method.
615  */
616  frame_info = c->frame_pred << 8;
617  bytestream2_put_le32(&pb, frame_info);
618 
619  /*
620  * At least currently Ut Video is IDR only.
621  * Set flags accordingly.
622  */
623 #if FF_API_CODED_FRAME
625  avctx->coded_frame->key_frame = 1;
628 #endif
629 
630  pkt->size = bytestream2_tell_p(&pb);
631  pkt->flags |= AV_PKT_FLAG_KEY;
632 
633  /* Packet should be done */
634  *got_packet = 1;
635 
636  return 0;
637 }
638 
639 #define OFFSET(x) offsetof(UtvideoContext, x)
640 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
641 static const AVOption options[] = {
642 { "pred", "Prediction method", OFFSET(frame_pred), AV_OPT_TYPE_INT, { .i64 = PRED_LEFT }, PRED_NONE, PRED_MEDIAN, VE, "pred" },
643  { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_NONE }, INT_MIN, INT_MAX, VE, "pred" },
644  { "left", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_LEFT }, INT_MIN, INT_MAX, VE, "pred" },
645  { "gradient", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_GRADIENT }, INT_MIN, INT_MAX, VE, "pred" },
646  { "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_MEDIAN }, INT_MIN, INT_MAX, VE, "pred" },
647 
648  { NULL},
649 };
650 
651 static const AVClass utvideo_class = {
652  .class_name = "utvideo",
653  .item_name = av_default_item_name,
654  .option = options,
655  .version = LIBAVUTIL_VERSION_INT,
656 };
657 
659  .name = "utvideo",
660  .long_name = NULL_IF_CONFIG_SMALL("Ut Video"),
661  .type = AVMEDIA_TYPE_VIDEO,
662  .id = AV_CODEC_ID_UTVIDEO,
663  .priv_data_size = sizeof(UtvideoContext),
664  .priv_class = &utvideo_class,
666  .encode2 = utvideo_encode_frame,
667  .close = utvideo_encode_close,
669  .pix_fmts = (const enum AVPixelFormat[]) {
672  },
673 };
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
Definition: bswapdsp.h:25
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:438
int slice_stride
Definition: utvideo.h:81
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2263
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
AVOption.
Definition: opt.h:245
static void mangle_rgb_planes(uint8_t *dst[4], int dst_stride, uint8_t *src, int step, int stride, int width, int height)
Definition: utvideoenc.c:237
uint32_t flags
Definition: utvideo.h:73
misc image utilities
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
Definition: j2kenc.c:206
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
static int huff_cmp_sym(const void *a, const void *b)
Definition: utvideoenc.c:42
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
const char * g
Definition: vf_curves.c:112
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int slice_bits_size
Definition: utvideo.h:83
int size
Definition: avcodec.h:1589
const char * b
Definition: vf_curves.c:113
static av_always_inline void bytestream2_init_writer(PutByteContext *p, uint8_t *buf, int buf_size)
Definition: bytestream.h:143
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1885
static av_cold int utvideo_encode_init(AVCodecContext *avctx)
Definition: utvideoenc.c:60
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
Definition: utils.c:120
static AVPacket pkt
AVCodec.
Definition: avcodec.h:3559
av_cold void ff_huffyuvencdsp_init(HuffYUVEncDSPContext *c)
Definition: huffyuvencdsp.c:77
#define AV_CODEC_CAP_INTRA_ONLY
Codec is intra only.
Definition: avcodec.h:1039
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
AVOptions.
AVCodec ff_utvideo_encoder
Definition: utvideoenc.c:658
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1772
#define height
uint8_t * data
Definition: avcodec.h:1588
static int utvideo_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)
Definition: utvideoenc.c:531
Definition: vf_geq.c:46
uint32_t code
Definition: magicyuv.c:49
#define A(x)
Definition: vp56_arith.h:28
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
static void left_predict(uint8_t *src, uint8_t *dst, int stride, int width, int height)
Definition: utvideoenc.c:271
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1620
BswapDSPContext bdsp
Definition: utvideo.h:70
const int ff_ut_pred_order[5]
Definition: utvideo.c:30
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
av_default_item_name
#define AVERROR(e)
Definition: error.h:43
uint8_t sym
Definition: magicyuv.c:47
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
AVCodecContext * avctx
Definition: utvideo.h:69
const char * name
Name of the codec implementation.
Definition: avcodec.h:3566
uint32_t frame_info_size
Definition: utvideo.h:73
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
static int write_huff_codes(uint8_t *src, uint8_t *dst, int dst_size, int width, int height, HuffEntry *he)
Definition: utvideoenc.c:357
static av_always_inline int bytestream2_tell_p(PutByteContext *p)
Definition: bytestream.h:193
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1019
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1594
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:85
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
static void median_predict(UtvideoContext *c, uint8_t *src, uint8_t *dst, int stride, int width, int height)
Definition: utvideoenc.c:288
int compression
Definition: utvideo.h:76
static const AVOption options[]
Definition: utvideoenc.c:641
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
#define width
int width
picture width / height.
Definition: avcodec.h:1844
static const AVClass utvideo_class
Definition: utvideoenc.c:651
static int encode_plane(AVCodecContext *avctx, uint8_t *src, uint8_t *dst, int stride, int plane_no, int width, int height, PutByteContext *pb)
Definition: utvideoenc.c:389
static av_always_inline unsigned int bytestream2_put_buffer(PutByteContext *p, const uint8_t *src, unsigned int size)
Definition: bytestream.h:282
#define src
Definition: vp9dsp.c:530
static av_always_inline int bytestream2_seek_p(PutByteContext *p, int offset, int whence)
Definition: bytestream.h:232
#define OFFSET(x)
Definition: utvideoenc.c:639
Common Ut Video header.
int frame_pred
Definition: utvideo.h:78
uint8_t len
Definition: magicyuv.c:48
int ff_huff_gen_len_table(uint8_t *dst, const uint64_t *stats, int stats_size, int skip0)
Definition: huffman.c:58
Libavcodec external API header.
attribute_deprecated int prediction_method
Definition: avcodec.h:2048
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
main external API structure.
Definition: avcodec.h:1657
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1689
int extradata_size
Definition: avcodec.h:1773
Describe the class of an AVClass context structure.
Definition: log.h:67
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2386
huffman tree builder and VLC generator
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1690
#define u(width,...)
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
uint8_t * slice_bits
Definition: utvideo.h:82
void(* sub_hfyu_median_pred)(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, intptr_t w, int *left, int *left_top)
Subtract HuffYUV's variant of median prediction.
Definition: huffyuvencdsp.h:33
int ff_ut_huff_cmp_len(const void *a, const void *b)
Definition: utvideo.c:37
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
static void calculate_codes(HuffEntry *he)
Definition: utvideoenc.c:336
static void count_usage(uint8_t *src, int width, int height, uint64_t *counts)
Definition: utvideoenc.c:322
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:101
static double c[64]
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:3078
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
Definition: put_bits.h:48
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:731
int slices
Number of slices.
Definition: avcodec.h:2409
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
Definition: bswapdsp.c:49
void * priv_data
Definition: avcodec.h:1699
HuffYUVEncDSPContext hdsp
Definition: utvideo.h:71
uint8_t * slice_buffer[4]
Definition: utvideo.h:82
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:61
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
int len
#define FF_PRED_PLANE
Definition: avcodec.h:2050
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
#define av_freep(p)
#define VE
Definition: utvideoenc.c:640
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:287
#define stride
#define MKTAG(a, b, c, d)
Definition: common.h:342
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
static av_cold int utvideo_encode_close(AVCodecContext *avctx)
Definition: utvideoenc.c:48
This structure stores compressed data.
Definition: avcodec.h:1565
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
bitstream writer API