FFmpeg  2.8.17
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Modules Pages
proresdec2.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2010-2011 Maxim Poliakovski
3  * Copyright (c) 2010-2011 Elvis Presley
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  * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy), 'ap4h' (4444)
25  */
26 
27 //#define DEBUG
28 
29 #define LONG_BITSTREAM_READER
30 
31 #include "libavutil/internal.h"
32 #include "avcodec.h"
33 #include "get_bits.h"
34 #include "idctdsp.h"
35 #include "internal.h"
36 #include "simple_idct.h"
37 #include "proresdec.h"
38 #include "proresdata.h"
39 
40 static void permute(uint8_t *dst, const uint8_t *src, const uint8_t permutation[64])
41 {
42  int i;
43  for (i = 0; i < 64; i++)
44  dst[i] = permutation[src[i]];
45 }
46 
48 {
49  ProresContext *ctx = avctx->priv_data;
50  uint8_t idct_permutation[64];
51 
52  avctx->bits_per_raw_sample = 10;
53 
54  ff_blockdsp_init(&ctx->bdsp, avctx);
55  ff_proresdsp_init(&ctx->prodsp, avctx);
56 
57  ff_init_scantable_permutation(idct_permutation,
59 
60  permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
61  permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
62 
63  return 0;
64 }
65 
66 static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
67  const int data_size, AVCodecContext *avctx)
68 {
69  int hdr_size, width, height, flags;
70  int version;
71  const uint8_t *ptr;
72 
73  hdr_size = AV_RB16(buf);
74  ff_dlog(avctx, "header size %d\n", hdr_size);
75  if (hdr_size > data_size) {
76  av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
77  return AVERROR_INVALIDDATA;
78  }
79 
80  version = AV_RB16(buf + 2);
81  ff_dlog(avctx, "%.4s version %d\n", buf+4, version);
82  if (version > 1) {
83  av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
84  return AVERROR_PATCHWELCOME;
85  }
86 
87  width = AV_RB16(buf + 8);
88  height = AV_RB16(buf + 10);
89  if (width != avctx->width || height != avctx->height) {
90  av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n",
91  avctx->width, avctx->height, width, height);
92  return AVERROR_PATCHWELCOME;
93  }
94 
95  ctx->frame_type = (buf[12] >> 2) & 3;
96  ctx->alpha_info = buf[17] & 0xf;
97 
98  if (ctx->alpha_info > 2) {
99  av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
100  return AVERROR_INVALIDDATA;
101  }
102  if (avctx->skip_alpha) ctx->alpha_info = 0;
103 
104  ff_dlog(avctx, "frame type %d\n", ctx->frame_type);
105 
106  if (ctx->frame_type == 0) {
107  ctx->scan = ctx->progressive_scan; // permuted
108  } else {
109  ctx->scan = ctx->interlaced_scan; // permuted
110  ctx->frame->interlaced_frame = 1;
111  ctx->frame->top_field_first = ctx->frame_type == 1;
112  }
113 
114  if (ctx->alpha_info) {
115  avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10;
116  } else {
117  avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10;
118  }
119 
120  ptr = buf + 20;
121  flags = buf[19];
122  ff_dlog(avctx, "flags %x\n", flags);
123 
124  if (flags & 2) {
125  if(buf + data_size - ptr < 64) {
126  av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
127  return AVERROR_INVALIDDATA;
128  }
129  permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
130  ptr += 64;
131  } else {
132  memset(ctx->qmat_luma, 4, 64);
133  }
134 
135  if (flags & 1) {
136  if(buf + data_size - ptr < 64) {
137  av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
138  return AVERROR_INVALIDDATA;
139  }
140  permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
141  } else {
142  memset(ctx->qmat_chroma, 4, 64);
143  }
144 
145  return hdr_size;
146 }
147 
148 static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
149 {
150  ProresContext *ctx = avctx->priv_data;
151  int i, hdr_size, slice_count;
152  unsigned pic_data_size;
153  int log2_slice_mb_width, log2_slice_mb_height;
154  int slice_mb_count, mb_x, mb_y;
155  const uint8_t *data_ptr, *index_ptr;
156 
157  hdr_size = buf[0] >> 3;
158  if (hdr_size < 8 || hdr_size > buf_size) {
159  av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
160  return AVERROR_INVALIDDATA;
161  }
162 
163  pic_data_size = AV_RB32(buf + 1);
164  if (pic_data_size > buf_size) {
165  av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
166  return AVERROR_INVALIDDATA;
167  }
168 
169  log2_slice_mb_width = buf[7] >> 4;
170  log2_slice_mb_height = buf[7] & 0xF;
171  if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
172  av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
173  1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
174  return AVERROR_INVALIDDATA;
175  }
176 
177  ctx->mb_width = (avctx->width + 15) >> 4;
178  if (ctx->frame_type)
179  ctx->mb_height = (avctx->height + 31) >> 5;
180  else
181  ctx->mb_height = (avctx->height + 15) >> 4;
182 
183  slice_count = AV_RB16(buf + 5);
184 
185  if (ctx->slice_count != slice_count || !ctx->slices) {
186  av_freep(&ctx->slices);
187  ctx->slice_count = 0;
188  ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices));
189  if (!ctx->slices)
190  return AVERROR(ENOMEM);
191  ctx->slice_count = slice_count;
192  }
193 
194  if (!slice_count)
195  return AVERROR(EINVAL);
196 
197  if (hdr_size + slice_count*2 > buf_size) {
198  av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
199  return AVERROR_INVALIDDATA;
200  }
201 
202  // parse slice information
203  index_ptr = buf + hdr_size;
204  data_ptr = index_ptr + slice_count*2;
205 
206  slice_mb_count = 1 << log2_slice_mb_width;
207  mb_x = 0;
208  mb_y = 0;
209 
210  for (i = 0; i < slice_count; i++) {
211  SliceContext *slice = &ctx->slices[i];
212 
213  slice->data = data_ptr;
214  data_ptr += AV_RB16(index_ptr + i*2);
215 
216  while (ctx->mb_width - mb_x < slice_mb_count)
217  slice_mb_count >>= 1;
218 
219  slice->mb_x = mb_x;
220  slice->mb_y = mb_y;
221  slice->mb_count = slice_mb_count;
222  slice->data_size = data_ptr - slice->data;
223 
224  if (slice->data_size < 6) {
225  av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
226  return AVERROR_INVALIDDATA;
227  }
228 
229  mb_x += slice_mb_count;
230  if (mb_x == ctx->mb_width) {
231  slice_mb_count = 1 << log2_slice_mb_width;
232  mb_x = 0;
233  mb_y++;
234  }
235  if (data_ptr > buf + buf_size) {
236  av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
237  return AVERROR_INVALIDDATA;
238  }
239  }
240 
241  if (mb_x || mb_y != ctx->mb_height) {
242  av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
243  mb_y, ctx->mb_height);
244  return AVERROR_INVALIDDATA;
245  }
246 
247  return pic_data_size;
248 }
249 
250 #define DECODE_CODEWORD(val, codebook) \
251  do { \
252  unsigned int rice_order, exp_order, switch_bits; \
253  unsigned int q, buf, bits; \
254  \
255  UPDATE_CACHE(re, gb); \
256  buf = GET_CACHE(re, gb); \
257  \
258  /* number of bits to switch between rice and exp golomb */ \
259  switch_bits = codebook & 3; \
260  rice_order = codebook >> 5; \
261  exp_order = (codebook >> 2) & 7; \
262  \
263  q = 31 - av_log2(buf); \
264  \
265  if (q > switch_bits) { /* exp golomb */ \
266  bits = exp_order - switch_bits + (q<<1); \
267  if (bits > FFMIN(MIN_CACHE_BITS, 31)) \
268  return AVERROR_INVALIDDATA; \
269  val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
270  ((switch_bits + 1) << rice_order); \
271  SKIP_BITS(re, gb, bits); \
272  } else if (rice_order) { \
273  SKIP_BITS(re, gb, q+1); \
274  val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
275  SKIP_BITS(re, gb, rice_order); \
276  } else { \
277  val = q; \
278  SKIP_BITS(re, gb, q+1); \
279  } \
280  } while (0)
281 
282 #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
283 
284 #define FIRST_DC_CB 0xB8
285 
286 static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
287 
289  int blocks_per_slice)
290 {
291  int16_t prev_dc;
292  int code, i, sign;
293 
294  OPEN_READER(re, gb);
295 
297  prev_dc = TOSIGNED(code);
298  out[0] = prev_dc;
299 
300  out += 64; // dc coeff for the next block
301 
302  code = 5;
303  sign = 0;
304  for (i = 1; i < blocks_per_slice; i++, out += 64) {
305  DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)]);
306  if(code) sign ^= -(code & 1);
307  else sign = 0;
308  prev_dc += (((code + 1) >> 1) ^ sign) - sign;
309  out[0] = prev_dc;
310  }
311  CLOSE_READER(re, gb);
312  return 0;
313 }
314 
315 // adaptive codebook switching lut according to previous run/level values
316 static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
317 static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
318 
320  int16_t *out, int blocks_per_slice)
321 {
322  ProresContext *ctx = avctx->priv_data;
323  int block_mask, sign;
324  unsigned pos, run, level;
325  int max_coeffs, i, bits_left;
326  int log2_block_count = av_log2(blocks_per_slice);
327 
328  OPEN_READER(re, gb);
329  UPDATE_CACHE(re, gb); \
330  run = 4;
331  level = 2;
332 
333  max_coeffs = 64 << log2_block_count;
334  block_mask = blocks_per_slice - 1;
335 
336  for (pos = block_mask;;) {
337  bits_left = gb->size_in_bits - re_index;
338  if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
339  break;
340 
341  DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)]);
342  pos += run + 1;
343  if (pos >= max_coeffs) {
344  av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
345  return AVERROR_INVALIDDATA;
346  }
347 
348  DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)]);
349  level += 1;
350 
351  i = pos >> log2_block_count;
352 
353  sign = SHOW_SBITS(re, gb, 1);
354  SKIP_BITS(re, gb, 1);
355  out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
356  }
357 
358  CLOSE_READER(re, gb);
359  return 0;
360 }
361 
363  uint16_t *dst, int dst_stride,
364  const uint8_t *buf, unsigned buf_size,
365  const int16_t *qmat)
366 {
367  ProresContext *ctx = avctx->priv_data;
368  LOCAL_ALIGNED_16(int16_t, blocks, [8*4*64]);
369  int16_t *block;
370  GetBitContext gb;
371  int i, blocks_per_slice = slice->mb_count<<2;
372  int ret;
373 
374  for (i = 0; i < blocks_per_slice; i++)
375  ctx->bdsp.clear_block(blocks+(i<<6));
376 
377  init_get_bits(&gb, buf, buf_size << 3);
378 
379  if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
380  return ret;
381  if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
382  return ret;
383 
384  block = blocks;
385  for (i = 0; i < slice->mb_count; i++) {
386  ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
387  ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat);
388  ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat);
389  ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat);
390  block += 4*64;
391  dst += 16;
392  }
393  return 0;
394 }
395 
397  uint16_t *dst, int dst_stride,
398  const uint8_t *buf, unsigned buf_size,
399  const int16_t *qmat, int log2_blocks_per_mb)
400 {
401  ProresContext *ctx = avctx->priv_data;
402  LOCAL_ALIGNED_16(int16_t, blocks, [8*4*64]);
403  int16_t *block;
404  GetBitContext gb;
405  int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
406  int ret;
407 
408  for (i = 0; i < blocks_per_slice; i++)
409  ctx->bdsp.clear_block(blocks+(i<<6));
410 
411  init_get_bits(&gb, buf, buf_size << 3);
412 
413  if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
414  return ret;
415  if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
416  return ret;
417 
418  block = blocks;
419  for (i = 0; i < slice->mb_count; i++) {
420  for (j = 0; j < log2_blocks_per_mb; j++) {
421  ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
422  ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat);
423  block += 2*64;
424  dst += 8;
425  }
426  }
427  return 0;
428 }
429 
430 static void unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs,
431  const int num_bits)
432 {
433  const int mask = (1 << num_bits) - 1;
434  int i, idx, val, alpha_val;
435 
436  idx = 0;
437  alpha_val = mask;
438  do {
439  do {
440  if (get_bits1(gb)) {
441  val = get_bits(gb, num_bits);
442  } else {
443  int sign;
444  val = get_bits(gb, num_bits == 16 ? 7 : 4);
445  sign = val & 1;
446  val = (val + 2) >> 1;
447  if (sign)
448  val = -val;
449  }
450  alpha_val = (alpha_val + val) & mask;
451  if (num_bits == 16) {
452  dst[idx++] = alpha_val >> 6;
453  } else {
454  dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
455  }
456  if (idx >= num_coeffs)
457  break;
458  } while (get_bits_left(gb)>0 && get_bits1(gb));
459  val = get_bits(gb, 4);
460  if (!val)
461  val = get_bits(gb, 11);
462  if (idx + val > num_coeffs)
463  val = num_coeffs - idx;
464  if (num_bits == 16) {
465  for (i = 0; i < val; i++)
466  dst[idx++] = alpha_val >> 6;
467  } else {
468  for (i = 0; i < val; i++)
469  dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
470 
471  }
472  } while (idx < num_coeffs);
473 }
474 
475 /**
476  * Decode alpha slice plane.
477  */
479  uint16_t *dst, int dst_stride,
480  const uint8_t *buf, int buf_size,
481  int blocks_per_slice)
482 {
483  GetBitContext gb;
484  int i;
485  LOCAL_ALIGNED_16(int16_t, blocks, [8*4*64]);
486  int16_t *block;
487 
488  for (i = 0; i < blocks_per_slice<<2; i++)
489  ctx->bdsp.clear_block(blocks+(i<<6));
490 
491  init_get_bits(&gb, buf, buf_size << 3);
492 
493  if (ctx->alpha_info == 2) {
494  unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16);
495  } else {
496  unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8);
497  }
498 
499  block = blocks;
500  for (i = 0; i < 16; i++) {
501  memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst));
502  dst += dst_stride >> 1;
503  block += 16 * blocks_per_slice;
504  }
505 }
506 
507 static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
508 {
509  ProresContext *ctx = avctx->priv_data;
510  SliceContext *slice = &ctx->slices[jobnr];
511  const uint8_t *buf = slice->data;
512  AVFrame *pic = ctx->frame;
513  int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
514  int luma_stride, chroma_stride;
515  int y_data_size, u_data_size, v_data_size, a_data_size;
516  uint8_t *dest_y, *dest_u, *dest_v, *dest_a;
517  int16_t qmat_luma_scaled[64];
518  int16_t qmat_chroma_scaled[64];
519  int mb_x_shift;
520  int ret;
521 
522  slice->ret = -1;
523  //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
524  // jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
525 
526  // slice header
527  hdr_size = buf[0] >> 3;
528  qscale = av_clip(buf[1], 1, 224);
529  qscale = qscale > 128 ? qscale - 96 << 2: qscale;
530  y_data_size = AV_RB16(buf + 2);
531  u_data_size = AV_RB16(buf + 4);
532  v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
533  if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
534  a_data_size = slice->data_size - y_data_size - u_data_size -
535  v_data_size - hdr_size;
536 
537  if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0
538  || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){
539  av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
540  return AVERROR_INVALIDDATA;
541  }
542 
543  buf += hdr_size;
544 
545  for (i = 0; i < 64; i++) {
546  qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
547  qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
548  }
549 
550  if (ctx->frame_type == 0) {
551  luma_stride = pic->linesize[0];
552  chroma_stride = pic->linesize[1];
553  } else {
554  luma_stride = pic->linesize[0] << 1;
555  chroma_stride = pic->linesize[1] << 1;
556  }
557 
558  if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10) {
559  mb_x_shift = 5;
560  log2_chroma_blocks_per_mb = 2;
561  } else {
562  mb_x_shift = 4;
563  log2_chroma_blocks_per_mb = 1;
564  }
565 
566  dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
567  dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
568  dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
569  dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
570 
571  if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) {
572  dest_y += pic->linesize[0];
573  dest_u += pic->linesize[1];
574  dest_v += pic->linesize[2];
575  dest_a += pic->linesize[3];
576  }
577 
578  ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride,
579  buf, y_data_size, qmat_luma_scaled);
580  if (ret < 0)
581  return ret;
582 
583  if (!(avctx->flags & AV_CODEC_FLAG_GRAY)) {
584  ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride,
585  buf + y_data_size, u_data_size,
586  qmat_chroma_scaled, log2_chroma_blocks_per_mb);
587  if (ret < 0)
588  return ret;
589 
590  ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride,
591  buf + y_data_size + u_data_size, v_data_size,
592  qmat_chroma_scaled, log2_chroma_blocks_per_mb);
593  if (ret < 0)
594  return ret;
595  }
596  /* decode alpha plane if available */
597  if (ctx->alpha_info && pic->data[3] && a_data_size)
598  decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride,
599  buf + y_data_size + u_data_size + v_data_size,
600  a_data_size, slice->mb_count);
601 
602  slice->ret = 0;
603  return 0;
604 }
605 
606 static int decode_picture(AVCodecContext *avctx)
607 {
608  ProresContext *ctx = avctx->priv_data;
609  int i;
610 
611  avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count);
612 
613  for (i = 0; i < ctx->slice_count; i++)
614  if (ctx->slices[i].ret < 0)
615  return ctx->slices[i].ret;
616 
617  return 0;
618 }
619 
620 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
621  AVPacket *avpkt)
622 {
623  ProresContext *ctx = avctx->priv_data;
624  AVFrame *frame = data;
625  const uint8_t *buf = avpkt->data;
626  int buf_size = avpkt->size;
627  int frame_hdr_size, pic_size, ret;
628 
629  if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
630  av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
631  return AVERROR_INVALIDDATA;
632  }
633 
634  ctx->frame = frame;
636  ctx->frame->key_frame = 1;
637  ctx->first_field = 1;
638 
639  buf += 8;
640  buf_size -= 8;
641 
642  frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
643  if (frame_hdr_size < 0)
644  return frame_hdr_size;
645 
646  buf += frame_hdr_size;
647  buf_size -= frame_hdr_size;
648 
649  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
650  return ret;
651 
653  pic_size = decode_picture_header(avctx, buf, buf_size);
654  if (pic_size < 0) {
655  av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
656  return pic_size;
657  }
658 
659  if ((ret = decode_picture(avctx)) < 0) {
660  av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
661  return ret;
662  }
663 
664  buf += pic_size;
665  buf_size -= pic_size;
666 
667  if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
668  ctx->first_field = 0;
669  goto decode_picture;
670  }
671 
672  *got_frame = 1;
673 
674  return avpkt->size;
675 }
676 
678 {
679  ProresContext *ctx = avctx->priv_data;
680 
681  av_freep(&ctx->slices);
682 
683  return 0;
684 }
685 
687  .name = "prores",
688  .long_name = NULL_IF_CONFIG_SMALL("ProRes"),
689  .type = AVMEDIA_TYPE_VIDEO,
690  .id = AV_CODEC_ID_PRORES,
691  .priv_data_size = sizeof(ProresContext),
692  .init = decode_init,
693  .close = decode_close,
694  .decode = decode_frame,
696 };
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:634
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
#define DECODE_CODEWORD(val, codebook)
Definition: proresdec2.c:250
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int first_field
Definition: proresdec.h:51
void(* clear_block)(int16_t *block)
Definition: blockdsp.h:35
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:416
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
Definition: proresdec2.c:507
static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice, uint16_t *dst, int dst_stride, const uint8_t *buf, unsigned buf_size, const int16_t *qmat)
Definition: proresdec2.c:362
int size
Definition: avcodec.h:1434
uint8_t qmat_chroma[64]
dequantization matrix for chroma
Definition: proresdec.h:43
av_cold void ff_proresdsp_init(ProresDSPContext *dsp, AVCodecContext *avctx)
Definition: proresdsp.c:58
const uint8_t * scan
Definition: proresdec.h:50
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1732
BlockDSPContext bdsp
Definition: proresdec.h:38
unsigned mb_height
height of the current picture in mb
Definition: proresdec.h:47
int version
Definition: avisynth_c.h:629
int idct_permutation_type
Definition: proresdsp.h:32
uint8_t run
Definition: svq3.c:149
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3013
unsigned mb_y
Definition: proresdec.h:31
AVCodec.
Definition: avcodec.h:3482
AVFrame * frame
Definition: proresdec.h:40
unsigned data_size
Definition: proresdec.h:33
uint8_t
#define av_cold
Definition: attributes.h:74
static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
Definition: proresdec2.c:148
#define AV_RB32
Definition: intreadwrite.h:130
static av_cold int decode_init(AVCodecContext *avctx)
Definition: proresdec2.c:47
unsigned mb_count
Definition: proresdec.h:32
static AVFrame * frame
AVCodec ff_prores_decoder
Definition: proresdec2.c:686
uint8_t * data
Definition: avcodec.h:1433
#define ff_dlog(a,...)
bitstream reader API header.
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:367
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:763
#define av_log(a,...)
int slice_count
number of slices in the current picture
Definition: proresdec.h:45
SliceContext * slices
Definition: proresdec.h:44
#define U(x)
Definition: vp56_arith.h:37
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:594
unsigned mb_width
width of the current picture in mb
Definition: proresdec.h:46
#define UPDATE_CACHE(name, gb)
Definition: get_bits.h:174
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
ProresDSPContext prodsp
Definition: proresdec.h:39
static const uint16_t mask[17]
Definition: lzw.c:38
const uint8_t * data
Definition: proresdec.h:29
#define AV_RB16
Definition: intreadwrite.h:53
#define AVERROR(e)
Definition: error.h:43
int skip_alpha
Skip processing alpha if supported by codec.
Definition: avcodec.h:3391
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:178
const char * arg
Definition: jacosubdec.c:66
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1607
const char * name
Name of the codec implementation.
Definition: avcodec.h:3489
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:387
#define CLOSE_READER(name, gb)
Definition: get_bits.h:145
Libavcodec external API header.
unsigned mb_x
Definition: proresdec.h:30
#define SKIP_BITS(name, gb, num)
Definition: get_bits.h:189
common internal API header
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:242
#define FFMIN(a, b)
Definition: common.h:92
av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation, enum idct_permutation_type perm_type)
Definition: idctdsp.c:50
int width
picture width / height.
Definition: avcodec.h:1691
uint8_t idct_permutation[64]
Definition: proresdsp.h:33
int size_in_bits
Definition: get_bits.h:58
#define AV_RL32
Definition: intreadwrite.h:146
static const uint8_t lev_to_cb[10]
Definition: proresdec2.c:317
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:417
uint8_t interlaced_scan[64]
Definition: proresdec.h:49
#define SHOW_UBITS(name, gb, num)
Definition: get_bits.h:207
int alpha_info
Definition: proresdec.h:52
#define av_log2
Definition: intmath.h:100
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:924
const uint8_t ff_prores_interlaced_scan[64]
Definition: proresdata.c:36
AVS_Value src
Definition: avisynth_c.h:482
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:58
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
main external API structure.
Definition: avcodec.h:1512
void(* idct_put)(uint16_t *out, int linesize, int16_t *block, const int16_t *qmat)
Definition: proresdsp.h:34
const uint8_t ff_prores_progressive_scan[64]
Definition: proresdata.c:25
static void permute(uint8_t *dst, const uint8_t *src, const uint8_t permutation[64])
Definition: proresdec2.c:40
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:1048
#define OPEN_READER(name, gb)
Definition: get_bits.h:134
void * buf
Definition: avisynth_c.h:553
static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb, int16_t *out, int blocks_per_slice)
Definition: proresdec2.c:319
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:305
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice, uint16_t *dst, int dst_stride, const uint8_t *buf, unsigned buf_size, const int16_t *qmat, int log2_blocks_per_mb)
Definition: proresdec2.c:396
static const uint8_t run_to_cb[16]
Definition: proresdec2.c:316
uint8_t progressive_scan[64]
Definition: proresdec.h:48
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:415
#define TOSIGNED(x)
Definition: proresdec2.c:282
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: proresdec2.c:620
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:385
static int flags
Definition: cpu.c:47
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
uint8_t level
Definition: svq3.c:150
static void unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs, const int num_bits)
Definition: proresdec2.c:430
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:521
#define SHOW_SBITS(name, gb, num)
Definition: get_bits.h:208
#define FIRST_DC_CB
Definition: proresdec2.c:284
common internal api header.
static const uint8_t dc_codebook[7]
Definition: proresdec2.c:286
void * priv_data
Definition: avcodec.h:1554
float re
Definition: fft-test.c:73
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:372
simple idct header.
int(* execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
The codec may call this to execute several independent things.
Definition: avcodec.h:3103
static void decode_slice_alpha(ProresContext *ctx, uint16_t *dst, int dst_stride, const uint8_t *buf, int buf_size, int blocks_per_slice)
Decode alpha slice plane.
Definition: proresdec2.c:478
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:237
static int decode_frame_header(ProresContext *ctx, const uint8_t *buf, const int data_size, AVCodecContext *avctx)
Definition: proresdec2.c:66
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out, int blocks_per_slice)
Definition: proresdec2.c:288
static av_cold int decode_close(AVCodecContext *avctx)
Definition: proresdec2.c:677
#define LOCAL_ALIGNED_16(t, v,...)
Definition: internal.h:123
#define av_freep(p)
#define av_always_inline
Definition: attributes.h:37
uint8_t qmat_luma[64]
dequantization matrix for luma
Definition: proresdec.h:42
int frame_type
0 = progressive, 1 = tff, 2 = bff
Definition: proresdec.h:41
This structure stores compressed data.
Definition: avcodec.h:1410
static int decode_picture(AVCodecContext *avctx)
Definition: proresdec2.c:606
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:857
static int width
static int16_t block[64]
Definition: dct-test.c:110