FFmpeg  3.4.9
h264_slice.c
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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  * H.264 / AVC / MPEG-4 part10 codec.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/display.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/stereo3d.h"
32 #include "libavutil/timer.h"
33 #include "internal.h"
34 #include "cabac.h"
35 #include "cabac_functions.h"
36 #include "error_resilience.h"
37 #include "avcodec.h"
38 #include "h264.h"
39 #include "h264dec.h"
40 #include "h264data.h"
41 #include "h264chroma.h"
42 #include "h264_mvpred.h"
43 #include "h264_ps.h"
44 #include "golomb.h"
45 #include "mathops.h"
46 #include "mpegutils.h"
47 #include "mpegvideo.h"
48 #include "rectangle.h"
49 #include "thread.h"
50 
51 static const uint8_t field_scan[16+1] = {
52  0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
53  0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
54  2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
55  3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
56 };
57 
58 static const uint8_t field_scan8x8[64+1] = {
59  0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
60  1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
61  2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
62  0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
63  2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
64  2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
65  2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
66  3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
67  3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
68  4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
69  4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
70  5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
71  5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
72  7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
73  6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
74  7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
75 };
76 
77 static const uint8_t field_scan8x8_cavlc[64+1] = {
78  0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
79  2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
80  3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
81  5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
82  0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
83  1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
84  3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
85  5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
86  0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
87  1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
88  3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
89  5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
90  1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
91  1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
92  3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
93  6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
94 };
95 
96 // zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
97 static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
98  0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
99  4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
100  3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
101  2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
102  1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
103  3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
104  2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
105  3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
106  0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
107  2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
108  1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
109  4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
110  0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
111  1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
112  0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
113  5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
114 };
115 
116 static void release_unused_pictures(H264Context *h, int remove_current)
117 {
118  int i;
119 
120  /* release non reference frames */
121  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
122  if (h->DPB[i].f->buf[0] && !h->DPB[i].reference &&
123  (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
124  ff_h264_unref_picture(h, &h->DPB[i]);
125  }
126  }
127 }
128 
129 static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
130 {
131  const H264Context *h = sl->h264;
132  int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
133 
134  av_fast_malloc(&sl->bipred_scratchpad, &sl->bipred_scratchpad_allocated, 16 * 6 * alloc_size);
135  // edge emu needs blocksize + filter length - 1
136  // (= 21x21 for H.264)
137  av_fast_malloc(&sl->edge_emu_buffer, &sl->edge_emu_buffer_allocated, alloc_size * 2 * 21);
138 
140  h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
142  h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
143 
144  if (!sl->bipred_scratchpad || !sl->edge_emu_buffer ||
145  !sl->top_borders[0] || !sl->top_borders[1]) {
148  av_freep(&sl->top_borders[0]);
149  av_freep(&sl->top_borders[1]);
150 
153  sl->top_borders_allocated[0] = 0;
154  sl->top_borders_allocated[1] = 0;
155  return AVERROR(ENOMEM);
156  }
157 
158  return 0;
159 }
160 
162 {
163  const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
164  const int mb_array_size = h->mb_stride * h->mb_height;
165  const int b4_stride = h->mb_width * 4 + 1;
166  const int b4_array_size = b4_stride * h->mb_height * 4;
167 
168  h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
170  h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
171  sizeof(uint32_t), av_buffer_allocz);
172  h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
173  sizeof(int16_t), av_buffer_allocz);
174  h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
175 
176  if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
177  !h->ref_index_pool) {
182  return AVERROR(ENOMEM);
183  }
184 
185  return 0;
186 }
187 
189 {
190  int i, ret = 0;
191 
192  av_assert0(!pic->f->data[0]);
193 
194  pic->tf.f = pic->f;
195  ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
197  if (ret < 0)
198  goto fail;
199 
200  if (h->avctx->hwaccel) {
201  const AVHWAccel *hwaccel = h->avctx->hwaccel;
203  if (hwaccel->frame_priv_data_size) {
205  if (!pic->hwaccel_priv_buf)
206  return AVERROR(ENOMEM);
208  }
209  }
210  if (CONFIG_GRAY && !h->avctx->hwaccel && h->flags & AV_CODEC_FLAG_GRAY && pic->f->data[2]) {
211  int h_chroma_shift, v_chroma_shift;
213  &h_chroma_shift, &v_chroma_shift);
214 
215  for(i=0; i<AV_CEIL_RSHIFT(pic->f->height, v_chroma_shift); i++) {
216  memset(pic->f->data[1] + pic->f->linesize[1]*i,
217  0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
218  memset(pic->f->data[2] + pic->f->linesize[2]*i,
219  0x80, AV_CEIL_RSHIFT(pic->f->width, h_chroma_shift));
220  }
221  }
222 
223  if (!h->qscale_table_pool) {
224  ret = init_table_pools(h);
225  if (ret < 0)
226  goto fail;
227  }
228 
231  if (!pic->qscale_table_buf || !pic->mb_type_buf)
232  goto fail;
233 
234  pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
235  pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
236 
237  for (i = 0; i < 2; i++) {
240  if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
241  goto fail;
242 
243  pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
244  pic->ref_index[i] = pic->ref_index_buf[i]->data;
245  }
246 
247  return 0;
248 fail:
249  ff_h264_unref_picture(h, pic);
250  return (ret < 0) ? ret : AVERROR(ENOMEM);
251 }
252 
254 {
255  int i;
256 
257  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
258  if (!h->DPB[i].f->buf[0])
259  return i;
260  }
261  return AVERROR_INVALIDDATA;
262 }
263 
264 
265 #define IN_RANGE(a, b, size) (((void*)(a) >= (void*)(b)) && ((void*)(a) < (void*)((b) + (size))))
266 
267 #define REBASE_PICTURE(pic, new_ctx, old_ctx) \
268  (((pic) && (pic) >= (old_ctx)->DPB && \
269  (pic) < (old_ctx)->DPB + H264_MAX_PICTURE_COUNT) ? \
270  &(new_ctx)->DPB[(pic) - (old_ctx)->DPB] : NULL)
271 
273  H264Context *new_base,
274  H264Context *old_base)
275 {
276  int i;
277 
278  for (i = 0; i < count; i++) {
279  av_assert1(!from[i] ||
280  IN_RANGE(from[i], old_base, 1) ||
281  IN_RANGE(from[i], old_base->DPB, H264_MAX_PICTURE_COUNT));
282  to[i] = REBASE_PICTURE(from[i], new_base, old_base);
283  }
284 }
285 
287 
289  const AVCodecContext *src)
290 {
291  H264Context *h = dst->priv_data, *h1 = src->priv_data;
292  int inited = h->context_initialized, err = 0;
293  int need_reinit = 0;
294  int i, ret;
295 
296  if (dst == src)
297  return 0;
298 
299  if (inited && !h1->ps.sps)
300  return AVERROR_INVALIDDATA;
301 
302  if (inited &&
303  (h->width != h1->width ||
304  h->height != h1->height ||
305  h->mb_width != h1->mb_width ||
306  h->mb_height != h1->mb_height ||
307  !h->ps.sps ||
308  h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
309  h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
310  h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
311  need_reinit = 1;
312  }
313 
314  /* copy block_offset since frame_start may not be called */
315  memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
316 
317  // SPS/PPS
318  for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
319  av_buffer_unref(&h->ps.sps_list[i]);
320  if (h1->ps.sps_list[i]) {
321  h->ps.sps_list[i] = av_buffer_ref(h1->ps.sps_list[i]);
322  if (!h->ps.sps_list[i])
323  return AVERROR(ENOMEM);
324  }
325  }
326  for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
327  av_buffer_unref(&h->ps.pps_list[i]);
328  if (h1->ps.pps_list[i]) {
329  h->ps.pps_list[i] = av_buffer_ref(h1->ps.pps_list[i]);
330  if (!h->ps.pps_list[i])
331  return AVERROR(ENOMEM);
332  }
333  }
334 
337  h->ps.pps = NULL;
338  h->ps.sps = NULL;
339  if (h1->ps.pps_ref) {
340  h->ps.pps_ref = av_buffer_ref(h1->ps.pps_ref);
341  if (!h->ps.pps_ref)
342  return AVERROR(ENOMEM);
343  h->ps.pps = (const PPS*)h->ps.pps_ref->data;
344  }
345  if (h1->ps.sps_ref) {
346  h->ps.sps_ref = av_buffer_ref(h1->ps.sps_ref);
347  if (!h->ps.sps_ref)
348  return AVERROR(ENOMEM);
349  h->ps.sps = (const SPS*)h->ps.sps_ref->data;
350  }
351 
352  if (need_reinit || !inited) {
353  h->width = h1->width;
354  h->height = h1->height;
355  h->mb_height = h1->mb_height;
356  h->mb_width = h1->mb_width;
357  h->mb_num = h1->mb_num;
358  h->mb_stride = h1->mb_stride;
359  h->b_stride = h1->b_stride;
360 
361  if (h->context_initialized || h1->context_initialized) {
362  if ((err = h264_slice_header_init(h)) < 0) {
363  av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
364  return err;
365  }
366  }
367 
368  /* copy block_offset since frame_start may not be called */
369  memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
370  }
371 
372  h->avctx->coded_height = h1->avctx->coded_height;
373  h->avctx->coded_width = h1->avctx->coded_width;
374  h->avctx->width = h1->avctx->width;
375  h->avctx->height = h1->avctx->height;
376  h->width_from_caller = h1->width_from_caller;
377  h->height_from_caller = h1->height_from_caller;
378  h->coded_picture_number = h1->coded_picture_number;
379  h->first_field = h1->first_field;
380  h->picture_structure = h1->picture_structure;
381  h->mb_aff_frame = h1->mb_aff_frame;
382  h->droppable = h1->droppable;
383 
384  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
385  ff_h264_unref_picture(h, &h->DPB[i]);
386  if (h1->DPB[i].f->buf[0] &&
387  (ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
388  return ret;
389  }
390 
391  h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
393  if (h1->cur_pic.f->buf[0]) {
394  ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
395  if (ret < 0)
396  return ret;
397  }
398 
399  h->enable_er = h1->enable_er;
400  h->workaround_bugs = h1->workaround_bugs;
401  h->droppable = h1->droppable;
402 
403  // extradata/NAL handling
404  h->is_avc = h1->is_avc;
405  h->nal_length_size = h1->nal_length_size;
406  h->sei.unregistered.x264_build = h1->sei.unregistered.x264_build;
407 
408  memcpy(&h->poc, &h1->poc, sizeof(h->poc));
409 
410  memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
411  memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
412  memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
413  memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
414 
415  h->next_output_pic = h1->next_output_pic;
416  h->next_outputed_poc = h1->next_outputed_poc;
417 
418  memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
419  h->nb_mmco = h1->nb_mmco;
420  h->mmco_reset = h1->mmco_reset;
421  h->explicit_ref_marking = h1->explicit_ref_marking;
422  h->long_ref_count = h1->long_ref_count;
423  h->short_ref_count = h1->short_ref_count;
424 
425  copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
426  copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
427  copy_picture_range(h->delayed_pic, h1->delayed_pic,
428  MAX_DELAYED_PIC_COUNT + 2, h, h1);
429 
430  h->frame_recovered = h1->frame_recovered;
431 
432  if (!h->cur_pic_ptr)
433  return 0;
434 
435  if (!h->droppable) {
437  h->poc.prev_poc_msb = h->poc.poc_msb;
438  h->poc.prev_poc_lsb = h->poc.poc_lsb;
439  }
442 
443  h->recovery_frame = h1->recovery_frame;
444 
445  return err;
446 }
447 
449 {
450  H264Picture *pic;
451  int i, ret;
452  const int pixel_shift = h->pixel_shift;
453  int c[4] = {
454  1<<(h->ps.sps->bit_depth_luma-1),
455  1<<(h->ps.sps->bit_depth_chroma-1),
456  1<<(h->ps.sps->bit_depth_chroma-1),
457  -1
458  };
459 
460  if (!ff_thread_can_start_frame(h->avctx)) {
461  av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
462  return -1;
463  }
464 
466  h->cur_pic_ptr = NULL;
467 
468  i = find_unused_picture(h);
469  if (i < 0) {
470  av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
471  return i;
472  }
473  pic = &h->DPB[i];
474 
475  pic->reference = h->droppable ? 0 : h->picture_structure;
478  pic->frame_num = h->poc.frame_num;
479  /*
480  * Zero key_frame here; IDR markings per slice in frame or fields are ORed
481  * in later.
482  * See decode_nal_units().
483  */
484  pic->f->key_frame = 0;
485  pic->mmco_reset = 0;
486  pic->recovered = 0;
487  pic->invalid_gap = 0;
489 
490  pic->f->pict_type = h->slice_ctx[0].slice_type;
491 
492  pic->f->crop_left = h->crop_left;
493  pic->f->crop_right = h->crop_right;
494  pic->f->crop_top = h->crop_top;
495  pic->f->crop_bottom = h->crop_bottom;
496 
497  if ((ret = alloc_picture(h, pic)) < 0)
498  return ret;
499  if(!h->frame_recovered && !h->avctx->hwaccel
502 #endif
503  )
504  ff_color_frame(pic->f, c);
505 
506  h->cur_pic_ptr = pic;
510  }
511 
512  if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
513  return ret;
514 
515  for (i = 0; i < h->nb_slice_ctx; i++) {
516  h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
517  h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
518  }
519 
524  }
525 
526  for (i = 0; i < 16; i++) {
527  h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
528  h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
529  }
530  for (i = 0; i < 16; i++) {
531  h->block_offset[16 + i] =
532  h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
533  h->block_offset[48 + 16 + i] =
534  h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
535  }
536 
537  /* We mark the current picture as non-reference after allocating it, so
538  * that if we break out due to an error it can be released automatically
539  * in the next ff_mpv_frame_start().
540  */
541  h->cur_pic_ptr->reference = 0;
542 
543  h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
544 
545  h->next_output_pic = NULL;
546 
547  h->postpone_filter = 0;
548 
550 
551  assert(h->cur_pic_ptr->long_ref == 0);
552 
553  return 0;
554 }
555 
557  uint8_t *src_y,
558  uint8_t *src_cb, uint8_t *src_cr,
559  int linesize, int uvlinesize,
560  int simple)
561 {
562  uint8_t *top_border;
563  int top_idx = 1;
564  const int pixel_shift = h->pixel_shift;
565  int chroma444 = CHROMA444(h);
566  int chroma422 = CHROMA422(h);
567 
568  src_y -= linesize;
569  src_cb -= uvlinesize;
570  src_cr -= uvlinesize;
571 
572  if (!simple && FRAME_MBAFF(h)) {
573  if (sl->mb_y & 1) {
574  if (!MB_MBAFF(sl)) {
575  top_border = sl->top_borders[0][sl->mb_x];
576  AV_COPY128(top_border, src_y + 15 * linesize);
577  if (pixel_shift)
578  AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
579  if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
580  if (chroma444) {
581  if (pixel_shift) {
582  AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
583  AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
584  AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
585  AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
586  } else {
587  AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
588  AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
589  }
590  } else if (chroma422) {
591  if (pixel_shift) {
592  AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
593  AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
594  } else {
595  AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
596  AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
597  }
598  } else {
599  if (pixel_shift) {
600  AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
601  AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
602  } else {
603  AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
604  AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
605  }
606  }
607  }
608  }
609  } else if (MB_MBAFF(sl)) {
610  top_idx = 0;
611  } else
612  return;
613  }
614 
615  top_border = sl->top_borders[top_idx][sl->mb_x];
616  /* There are two lines saved, the line above the top macroblock
617  * of a pair, and the line above the bottom macroblock. */
618  AV_COPY128(top_border, src_y + 16 * linesize);
619  if (pixel_shift)
620  AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
621 
622  if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
623  if (chroma444) {
624  if (pixel_shift) {
625  AV_COPY128(top_border + 32, src_cb + 16 * linesize);
626  AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
627  AV_COPY128(top_border + 64, src_cr + 16 * linesize);
628  AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
629  } else {
630  AV_COPY128(top_border + 16, src_cb + 16 * linesize);
631  AV_COPY128(top_border + 32, src_cr + 16 * linesize);
632  }
633  } else if (chroma422) {
634  if (pixel_shift) {
635  AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
636  AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
637  } else {
638  AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
639  AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
640  }
641  } else {
642  if (pixel_shift) {
643  AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
644  AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
645  } else {
646  AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
647  AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
648  }
649  }
650  }
651 }
652 
653 /**
654  * Initialize implicit_weight table.
655  * @param field 0/1 initialize the weight for interlaced MBAFF
656  * -1 initializes the rest
657  */
658 static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
659 {
660  int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
661 
662  for (i = 0; i < 2; i++) {
663  sl->pwt.luma_weight_flag[i] = 0;
664  sl->pwt.chroma_weight_flag[i] = 0;
665  }
666 
667  if (field < 0) {
668  if (h->picture_structure == PICT_FRAME) {
669  cur_poc = h->cur_pic_ptr->poc;
670  } else {
671  cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
672  }
673  if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
674  sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2LL * cur_poc) {
675  sl->pwt.use_weight = 0;
676  sl->pwt.use_weight_chroma = 0;
677  return;
678  }
679  ref_start = 0;
680  ref_count0 = sl->ref_count[0];
681  ref_count1 = sl->ref_count[1];
682  } else {
683  cur_poc = h->cur_pic_ptr->field_poc[field];
684  ref_start = 16;
685  ref_count0 = 16 + 2 * sl->ref_count[0];
686  ref_count1 = 16 + 2 * sl->ref_count[1];
687  }
688 
689  sl->pwt.use_weight = 2;
690  sl->pwt.use_weight_chroma = 2;
691  sl->pwt.luma_log2_weight_denom = 5;
693 
694  for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
695  int64_t poc0 = sl->ref_list[0][ref0].poc;
696  for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
697  int w = 32;
698  if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
699  int poc1 = sl->ref_list[1][ref1].poc;
700  int td = av_clip_int8(poc1 - poc0);
701  if (td) {
702  int tb = av_clip_int8(cur_poc - poc0);
703  int tx = (16384 + (FFABS(td) >> 1)) / td;
704  int dist_scale_factor = (tb * tx + 32) >> 8;
705  if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
706  w = 64 - dist_scale_factor;
707  }
708  }
709  if (field < 0) {
710  sl->pwt.implicit_weight[ref0][ref1][0] =
711  sl->pwt.implicit_weight[ref0][ref1][1] = w;
712  } else {
713  sl->pwt.implicit_weight[ref0][ref1][field] = w;
714  }
715  }
716  }
717 }
718 
719 /**
720  * initialize scan tables
721  */
723 {
724  int i;
725  for (i = 0; i < 16; i++) {
726 #define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF)
728  h->field_scan[i] = TRANSPOSE(field_scan[i]);
729 #undef TRANSPOSE
730  }
731  for (i = 0; i < 64; i++) {
732 #define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3)
737 #undef TRANSPOSE
738  }
739  if (h->ps.sps->transform_bypass) { // FIXME same ugly
740  memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
741  memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
743  memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
744  memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
746  } else {
747  memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
748  memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
750  memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
751  memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
753  }
754 }
755 
756 static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
757 {
758 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
759  (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
760  CONFIG_H264_VAAPI_HWACCEL + \
761  (CONFIG_H264_VDA_HWACCEL * 2) + \
762  CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
763  CONFIG_H264_VDPAU_HWACCEL)
765  const enum AVPixelFormat *choices = pix_fmts;
766  int i;
767 
768  switch (h->ps.sps->bit_depth_luma) {
769  case 9:
770  if (CHROMA444(h)) {
771  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
772  *fmt++ = AV_PIX_FMT_GBRP9;
773  } else
774  *fmt++ = AV_PIX_FMT_YUV444P9;
775  } else if (CHROMA422(h))
776  *fmt++ = AV_PIX_FMT_YUV422P9;
777  else
778  *fmt++ = AV_PIX_FMT_YUV420P9;
779  break;
780  case 10:
781  if (CHROMA444(h)) {
782  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
783  *fmt++ = AV_PIX_FMT_GBRP10;
784  } else
785  *fmt++ = AV_PIX_FMT_YUV444P10;
786  } else if (CHROMA422(h))
787  *fmt++ = AV_PIX_FMT_YUV422P10;
788  else
789  *fmt++ = AV_PIX_FMT_YUV420P10;
790  break;
791  case 12:
792  if (CHROMA444(h)) {
793  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
794  *fmt++ = AV_PIX_FMT_GBRP12;
795  } else
796  *fmt++ = AV_PIX_FMT_YUV444P12;
797  } else if (CHROMA422(h))
798  *fmt++ = AV_PIX_FMT_YUV422P12;
799  else
800  *fmt++ = AV_PIX_FMT_YUV420P12;
801  break;
802  case 14:
803  if (CHROMA444(h)) {
804  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
805  *fmt++ = AV_PIX_FMT_GBRP14;
806  } else
807  *fmt++ = AV_PIX_FMT_YUV444P14;
808  } else if (CHROMA422(h))
809  *fmt++ = AV_PIX_FMT_YUV422P14;
810  else
811  *fmt++ = AV_PIX_FMT_YUV420P14;
812  break;
813  case 8:
814 #if CONFIG_H264_VDPAU_HWACCEL
815  *fmt++ = AV_PIX_FMT_VDPAU;
816 #endif
817  if (CHROMA444(h)) {
818  if (h->avctx->colorspace == AVCOL_SPC_RGB)
819  *fmt++ = AV_PIX_FMT_GBRP;
820  else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
821  *fmt++ = AV_PIX_FMT_YUVJ444P;
822  else
823  *fmt++ = AV_PIX_FMT_YUV444P;
824  } else if (CHROMA422(h)) {
826  *fmt++ = AV_PIX_FMT_YUVJ422P;
827  else
828  *fmt++ = AV_PIX_FMT_YUV422P;
829  } else {
830 #if CONFIG_H264_DXVA2_HWACCEL
831  *fmt++ = AV_PIX_FMT_DXVA2_VLD;
832 #endif
833 #if CONFIG_H264_D3D11VA_HWACCEL
834  *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
835  *fmt++ = AV_PIX_FMT_D3D11;
836 #endif
837 #if CONFIG_H264_VAAPI_HWACCEL
838  *fmt++ = AV_PIX_FMT_VAAPI;
839 #endif
840 #if CONFIG_H264_VDA_HWACCEL
841  *fmt++ = AV_PIX_FMT_VDA_VLD;
842  *fmt++ = AV_PIX_FMT_VDA;
843 #endif
844 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
845  *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
846 #endif
847  if (h->avctx->codec->pix_fmts)
848  choices = h->avctx->codec->pix_fmts;
849  else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
850  *fmt++ = AV_PIX_FMT_YUVJ420P;
851  else
852  *fmt++ = AV_PIX_FMT_YUV420P;
853  }
854  break;
855  default:
857  "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
858  return AVERROR_INVALIDDATA;
859  }
860 
861  *fmt = AV_PIX_FMT_NONE;
862 
863  for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
864  if (choices[i] == h->avctx->pix_fmt && !force_callback)
865  return choices[i];
866  return ff_thread_get_format(h->avctx, choices);
867 }
868 
869 /* export coded and cropped frame dimensions to AVCodecContext */
871 {
872  const SPS *sps = (const SPS*)h->ps.sps;
873  int cr = sps->crop_right;
874  int cl = sps->crop_left;
875  int ct = sps->crop_top;
876  int cb = sps->crop_bottom;
877  int width = h->width - (cr + cl);
878  int height = h->height - (ct + cb);
879  av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
880  av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
881 
882  /* handle container cropping */
883  if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
884  !sps->crop_top && !sps->crop_left &&
885  FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
886  FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) &&
887  h->width_from_caller <= width &&
888  h->height_from_caller <= height) {
890  height = h->height_from_caller;
891  cl = 0;
892  ct = 0;
893  cr = h->width - width;
894  cb = h->height - height;
895  } else {
896  h->width_from_caller = 0;
897  h->height_from_caller = 0;
898  }
899 
900  h->avctx->coded_width = h->width;
901  h->avctx->coded_height = h->height;
902  h->avctx->width = width;
903  h->avctx->height = height;
904  h->crop_right = cr;
905  h->crop_left = cl;
906  h->crop_top = ct;
907  h->crop_bottom = cb;
908 
909  return 0;
910 }
911 
913 {
914  const SPS *sps = h->ps.sps;
915  int i, ret;
916 
917  if (!sps) {
918  ret = AVERROR_INVALIDDATA;
919  goto fail;
920  }
921 
922  ff_set_sar(h->avctx, sps->sar);
924  &h->chroma_x_shift, &h->chroma_y_shift);
925 
926  if (sps->timing_info_present_flag) {
927  int64_t den = sps->time_scale;
928  if (h->sei.unregistered.x264_build < 44U)
929  den *= 2;
931  sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30);
932  }
933 
935 
936  h->first_field = 0;
937  h->prev_interlaced_frame = 1;
938 
939  init_scan_tables(h);
940  ret = ff_h264_alloc_tables(h);
941  if (ret < 0) {
942  av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
943  goto fail;
944  }
945 
946 #if FF_API_CAP_VDPAU
947  if (h->avctx->codec &&
949  (sps->bit_depth_luma != 8 || sps->chroma_format_idc > 1)) {
951  "VDPAU decoding does not support video colorspace.\n");
952  ret = AVERROR_INVALIDDATA;
953  goto fail;
954  }
955 #endif
956 
957  if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
958  sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
959  ) {
960  av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
961  sps->bit_depth_luma);
962  ret = AVERROR_INVALIDDATA;
963  goto fail;
964  }
965 
966  h->cur_bit_depth_luma =
969  h->pixel_shift = sps->bit_depth_luma > 8;
971  h->bit_depth_luma = sps->bit_depth_luma;
972 
974  sps->chroma_format_idc);
978  sps->chroma_format_idc);
980 
982  ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
983  if (ret < 0) {
984  av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
985  goto fail;
986  }
987  } else {
988  for (i = 0; i < h->nb_slice_ctx; i++) {
989  H264SliceContext *sl = &h->slice_ctx[i];
990 
991  sl->h264 = h;
992  sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
993  sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
994  sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
995 
996  if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
997  av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
998  goto fail;
999  }
1000  }
1001  }
1002 
1003  h->context_initialized = 1;
1004 
1005  return 0;
1006 fail:
1008  h->context_initialized = 0;
1009  return ret;
1010 }
1011 
1013 {
1014  switch (a) {
1018  default:
1019  return a;
1020  }
1021 }
1022 
1023 static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
1024 {
1025  const SPS *sps;
1026  int needs_reinit = 0, must_reinit, ret;
1027 
1028  if (first_slice) {
1029  av_buffer_unref(&h->ps.pps_ref);
1030  h->ps.pps = NULL;
1031  h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]);
1032  if (!h->ps.pps_ref)
1033  return AVERROR(ENOMEM);
1034  h->ps.pps = (const PPS*)h->ps.pps_ref->data;
1035  }
1036 
1037  if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
1038  av_buffer_unref(&h->ps.sps_ref);
1039  h->ps.sps = NULL;
1040  h->ps.sps_ref = av_buffer_ref(h->ps.sps_list[h->ps.pps->sps_id]);
1041  if (!h->ps.sps_ref)
1042  return AVERROR(ENOMEM);
1043  h->ps.sps = (const SPS*)h->ps.sps_ref->data;
1044 
1045  if (h->mb_width != h->ps.sps->mb_width ||
1046  h->mb_height != h->ps.sps->mb_height ||
1049  )
1050  needs_reinit = 1;
1051 
1052  if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
1054  needs_reinit = 1;
1055  }
1056  sps = h->ps.sps;
1057 
1058  must_reinit = (h->context_initialized &&
1059  ( 16*sps->mb_width != h->avctx->coded_width
1060  || 16*sps->mb_height != h->avctx->coded_height
1061  || h->cur_bit_depth_luma != sps->bit_depth_luma
1063  || h->mb_width != sps->mb_width
1064  || h->mb_height != sps->mb_height
1065  ));
1066  if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
1068  must_reinit = 1;
1069 
1070  if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
1071  must_reinit = 1;
1072 
1073  if (!h->setup_finished) {
1074  h->avctx->profile = ff_h264_get_profile(sps);
1075  h->avctx->level = sps->level_idc;
1076  h->avctx->refs = sps->ref_frame_count;
1077 
1078  h->mb_width = sps->mb_width;
1079  h->mb_height = sps->mb_height;
1080  h->mb_num = h->mb_width * h->mb_height;
1081  h->mb_stride = h->mb_width + 1;
1082 
1083  h->b_stride = h->mb_width * 4;
1084 
1085  h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
1086 
1087  h->width = 16 * h->mb_width;
1088  h->height = 16 * h->mb_height;
1089 
1090  ret = init_dimensions(h);
1091  if (ret < 0)
1092  return ret;
1093 
1094  if (sps->video_signal_type_present_flag) {
1095  h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG
1096  : AVCOL_RANGE_MPEG;
1098  if (h->avctx->colorspace != sps->colorspace)
1099  needs_reinit = 1;
1101  h->avctx->color_trc = sps->color_trc;
1102  h->avctx->colorspace = sps->colorspace;
1103  }
1104  }
1105  }
1106 
1107  if (!h->context_initialized || must_reinit || needs_reinit) {
1108  int flush_changes = h->context_initialized;
1109  h->context_initialized = 0;
1110  if (sl != h->slice_ctx) {
1112  "changing width %d -> %d / height %d -> %d on "
1113  "slice %d\n",
1114  h->width, h->avctx->coded_width,
1115  h->height, h->avctx->coded_height,
1116  h->current_slice + 1);
1117  return AVERROR_INVALIDDATA;
1118  }
1119 
1120  av_assert1(first_slice);
1121 
1122  if (flush_changes)
1124 
1125  if ((ret = get_pixel_format(h, 1)) < 0)
1126  return ret;
1127  h->avctx->pix_fmt = ret;
1128 
1129  av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
1130  "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
1131 
1132  if ((ret = h264_slice_header_init(h)) < 0) {
1134  "h264_slice_header_init() failed\n");
1135  return ret;
1136  }
1137  }
1138 
1139  return 0;
1140 }
1141 
1143 {
1144  const SPS *sps = h->ps.sps;
1145  H264Picture *cur = h->cur_pic_ptr;
1146 
1147  cur->f->interlaced_frame = 0;
1148  cur->f->repeat_pict = 0;
1149 
1150  /* Signal interlacing information externally. */
1151  /* Prioritize picture timing SEI information over used
1152  * decoding process if it exists. */
1153 
1156  switch (pt->pic_struct) {
1158  break;
1161  cur->f->interlaced_frame = 1;
1162  break;
1165  if (FIELD_OR_MBAFF_PICTURE(h))
1166  cur->f->interlaced_frame = 1;
1167  else
1168  // try to flag soft telecine progressive
1170  break;
1173  /* Signal the possibility of telecined film externally
1174  * (pic_struct 5,6). From these hints, let the applications
1175  * decide if they apply deinterlacing. */
1176  cur->f->repeat_pict = 1;
1177  break;
1179  cur->f->repeat_pict = 2;
1180  break;
1182  cur->f->repeat_pict = 4;
1183  break;
1184  }
1185 
1186  if ((pt->ct_type & 3) &&
1188  cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1189  } else {
1190  /* Derive interlacing flag from used decoding process. */
1192  }
1194 
1195  if (cur->field_poc[0] != cur->field_poc[1]) {
1196  /* Derive top_field_first from field pocs. */
1197  cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1198  } else {
1200  /* Use picture timing SEI information. Even if it is a
1201  * information of a past frame, better than nothing. */
1204  cur->f->top_field_first = 1;
1205  else
1206  cur->f->top_field_first = 0;
1207  } else if (cur->f->interlaced_frame) {
1208  /* Default to top field first when pic_struct_present_flag
1209  * is not set but interlaced frame detected */
1210  cur->f->top_field_first = 1;
1211  } else {
1212  /* Most likely progressive */
1213  cur->f->top_field_first = 0;
1214  }
1215  }
1216 
1217  if (h->sei.frame_packing.present &&
1222  AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
1223  if (stereo) {
1224  switch (fp->frame_packing_arrangement_type) {
1225  case 0:
1226  stereo->type = AV_STEREO3D_CHECKERBOARD;
1227  break;
1228  case 1:
1229  stereo->type = AV_STEREO3D_COLUMNS;
1230  break;
1231  case 2:
1232  stereo->type = AV_STEREO3D_LINES;
1233  break;
1234  case 3:
1235  if (fp->quincunx_sampling_flag)
1237  else
1238  stereo->type = AV_STEREO3D_SIDEBYSIDE;
1239  break;
1240  case 4:
1241  stereo->type = AV_STEREO3D_TOPBOTTOM;
1242  break;
1243  case 5:
1244  stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1245  break;
1246  case 6:
1247  stereo->type = AV_STEREO3D_2D;
1248  break;
1249  }
1250 
1251  if (fp->content_interpretation_type == 2)
1252  stereo->flags = AV_STEREO3D_FLAG_INVERT;
1253  }
1254  }
1255 
1256  if (h->sei.display_orientation.present &&
1261  double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1262  AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
1264  sizeof(int32_t) * 9);
1265  if (rotation) {
1266  av_display_rotation_set((int32_t *)rotation->data, angle);
1267  av_display_matrix_flip((int32_t *)rotation->data,
1268  o->hflip, o->vflip);
1269  }
1270  }
1271 
1272  if (h->sei.afd.present) {
1274  sizeof(uint8_t));
1275 
1276  if (sd) {
1278  h->sei.afd.present = 0;
1279  }
1280  }
1281 
1282  if (h->sei.a53_caption.a53_caption) {
1283  H264SEIA53Caption *a53 = &h->sei.a53_caption;
1286  a53->a53_caption_size);
1287  if (sd)
1288  memcpy(sd->data, a53->a53_caption, a53->a53_caption_size);
1289  av_freep(&a53->a53_caption);
1290  a53->a53_caption_size = 0;
1292  }
1293 
1294  if (h->sei.alternative_transfer.present &&
1298  }
1299 
1300  return 0;
1301 }
1302 
1304 {
1305  const SPS *sps = h->ps.sps;
1306  H264Picture *out = h->cur_pic_ptr;
1307  H264Picture *cur = h->cur_pic_ptr;
1308  int i, pics, out_of_order, out_idx;
1309 
1310  cur->mmco_reset = h->mmco_reset;
1311  h->mmco_reset = 0;
1312 
1313  if (sps->bitstream_restriction_flag ||
1316  }
1317 
1318  for (i = 0; 1; i++) {
1319  if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1320  if(i)
1321  h->last_pocs[i-1] = cur->poc;
1322  break;
1323  } else if(i) {
1324  h->last_pocs[i-1]= h->last_pocs[i];
1325  }
1326  }
1327  out_of_order = MAX_DELAYED_PIC_COUNT - i;
1328  if( cur->f->pict_type == AV_PICTURE_TYPE_B
1329  || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - (int64_t)h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2))
1330  out_of_order = FFMAX(out_of_order, 1);
1331  if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1332  av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1333  for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1334  h->last_pocs[i] = INT_MIN;
1335  h->last_pocs[0] = cur->poc;
1336  cur->mmco_reset = 1;
1337  } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
1338  int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
1339  av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
1340  h->avctx->has_b_frames = out_of_order;
1341  }
1342 
1343  pics = 0;
1344  while (h->delayed_pic[pics])
1345  pics++;
1346 
1348 
1349  h->delayed_pic[pics++] = cur;
1350  if (cur->reference == 0)
1351  cur->reference = DELAYED_PIC_REF;
1352 
1353  out = h->delayed_pic[0];
1354  out_idx = 0;
1355  for (i = 1; h->delayed_pic[i] &&
1356  !h->delayed_pic[i]->f->key_frame &&
1357  !h->delayed_pic[i]->mmco_reset;
1358  i++)
1359  if (h->delayed_pic[i]->poc < out->poc) {
1360  out = h->delayed_pic[i];
1361  out_idx = i;
1362  }
1363  if (h->avctx->has_b_frames == 0 &&
1364  (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
1365  h->next_outputed_poc = INT_MIN;
1366  out_of_order = out->poc < h->next_outputed_poc;
1367 
1368  if (out_of_order || pics > h->avctx->has_b_frames) {
1369  out->reference &= ~DELAYED_PIC_REF;
1370  for (i = out_idx; h->delayed_pic[i]; i++)
1371  h->delayed_pic[i] = h->delayed_pic[i + 1];
1372  }
1373  if (!out_of_order && pics > h->avctx->has_b_frames) {
1374  h->next_output_pic = out;
1375  if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
1376  h->next_outputed_poc = INT_MIN;
1377  } else
1378  h->next_outputed_poc = out->poc;
1379 
1380  if (out->recovered) {
1381  // We have reached an recovery point and all frames after it in
1382  // display order are "recovered".
1384  }
1386 
1387  if (!out->recovered) {
1388  if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
1390  h->next_output_pic = NULL;
1391  } else {
1392  out->f->flags |= AV_FRAME_FLAG_CORRUPT;
1393  }
1394  }
1395  } else {
1396  av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1397  }
1398 
1399  return 0;
1400 }
1401 
1402 /* This function is called right after decoding the slice header for a first
1403  * slice in a field (or a frame). It decides whether we are decoding a new frame
1404  * or a second field in a pair and does the necessary setup.
1405  */
1407  const H2645NAL *nal, int first_slice)
1408 {
1409  int i;
1410  const SPS *sps;
1411 
1412  int last_pic_structure, last_pic_droppable, ret;
1413 
1414  ret = h264_init_ps(h, sl, first_slice);
1415  if (ret < 0)
1416  return ret;
1417 
1418  sps = h->ps.sps;
1419 
1420  last_pic_droppable = h->droppable;
1421  last_pic_structure = h->picture_structure;
1422  h->droppable = (nal->ref_idc == 0);
1424 
1425  h->poc.frame_num = sl->frame_num;
1426  h->poc.poc_lsb = sl->poc_lsb;
1428  h->poc.delta_poc[0] = sl->delta_poc[0];
1429  h->poc.delta_poc[1] = sl->delta_poc[1];
1430 
1431  /* Shorten frame num gaps so we don't have to allocate reference
1432  * frames just to throw them away */
1433  if (h->poc.frame_num != h->poc.prev_frame_num) {
1434  int unwrap_prev_frame_num = h->poc.prev_frame_num;
1435  int max_frame_num = 1 << sps->log2_max_frame_num;
1436 
1437  if (unwrap_prev_frame_num > h->poc.frame_num)
1438  unwrap_prev_frame_num -= max_frame_num;
1439 
1440  if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1441  unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1442  if (unwrap_prev_frame_num < 0)
1443  unwrap_prev_frame_num += max_frame_num;
1444 
1445  h->poc.prev_frame_num = unwrap_prev_frame_num;
1446  }
1447  }
1448 
1449  /* See if we have a decoded first field looking for a pair...
1450  * Here, we're using that to see if we should mark previously
1451  * decode frames as "finished".
1452  * We have to do that before the "dummy" in-between frame allocation,
1453  * since that can modify h->cur_pic_ptr. */
1454  if (h->first_field) {
1455  int last_field = last_pic_structure == PICT_BOTTOM_FIELD;
1456  av_assert0(h->cur_pic_ptr);
1457  av_assert0(h->cur_pic_ptr->f->buf[0]);
1458  assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1459 
1460  /* Mark old field/frame as completed */
1461  if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) {
1462  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field);
1463  }
1464 
1465  /* figure out if we have a complementary field pair */
1466  if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1467  /* Previous field is unmatched. Don't display it, but let it
1468  * remain for reference if marked as such. */
1469  if (last_pic_structure != PICT_FRAME) {
1471  last_pic_structure == PICT_TOP_FIELD);
1472  }
1473  } else {
1474  if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1475  /* This and previous field were reference, but had
1476  * different frame_nums. Consider this field first in
1477  * pair. Throw away previous field except for reference
1478  * purposes. */
1479  if (last_pic_structure != PICT_FRAME) {
1481  last_pic_structure == PICT_TOP_FIELD);
1482  }
1483  } else {
1484  /* Second field in complementary pair */
1485  if (!((last_pic_structure == PICT_TOP_FIELD &&
1487  (last_pic_structure == PICT_BOTTOM_FIELD &&
1490  "Invalid field mode combination %d/%d\n",
1491  last_pic_structure, h->picture_structure);
1492  h->picture_structure = last_pic_structure;
1493  h->droppable = last_pic_droppable;
1494  return AVERROR_INVALIDDATA;
1495  } else if (last_pic_droppable != h->droppable) {
1497  "Found reference and non-reference fields in the same frame, which");
1498  h->picture_structure = last_pic_structure;
1499  h->droppable = last_pic_droppable;
1500  return AVERROR_PATCHWELCOME;
1501  }
1502  }
1503  }
1504  }
1505 
1506  while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field &&
1507  h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1508  H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1509  av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1510  h->poc.frame_num, h->poc.prev_frame_num);
1512  for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
1513  h->last_pocs[i] = INT_MIN;
1514  ret = h264_frame_start(h);
1515  if (ret < 0) {
1516  h->first_field = 0;
1517  return ret;
1518  }
1519 
1520  h->poc.prev_frame_num++;
1521  h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1524  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1525  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1526 
1527  h->explicit_ref_marking = 0;
1529  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1530  return ret;
1531  /* Error concealment: If a ref is missing, copy the previous ref
1532  * in its place.
1533  * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1534  * many assumptions about there being no actual duplicates.
1535  * FIXME: This does not copy padding for out-of-frame motion
1536  * vectors. Given we are concealing a lost frame, this probably
1537  * is not noticeable by comparison, but it should be fixed. */
1538  if (h->short_ref_count) {
1539  if (prev &&
1540  h->short_ref[0]->f->width == prev->f->width &&
1541  h->short_ref[0]->f->height == prev->f->height &&
1542  h->short_ref[0]->f->format == prev->f->format) {
1543  ff_thread_await_progress(&prev->tf, INT_MAX, 0);
1544  if (prev->field_picture)
1545  ff_thread_await_progress(&prev->tf, INT_MAX, 1);
1546  av_image_copy(h->short_ref[0]->f->data,
1547  h->short_ref[0]->f->linesize,
1548  (const uint8_t **)prev->f->data,
1549  prev->f->linesize,
1550  prev->f->format,
1551  prev->f->width,
1552  prev->f->height);
1553  h->short_ref[0]->poc = prev->poc + 2;
1554  }
1555  h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1556  }
1557  }
1558 
1559  /* See if we have a decoded first field looking for a pair...
1560  * We're using that to see whether to continue decoding in that
1561  * frame, or to allocate a new one. */
1562  if (h->first_field) {
1563  av_assert0(h->cur_pic_ptr);
1564  av_assert0(h->cur_pic_ptr->f->buf[0]);
1565  assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1566 
1567  /* figure out if we have a complementary field pair */
1568  if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1569  /* Previous field is unmatched. Don't display it, but let it
1570  * remain for reference if marked as such. */
1571  h->missing_fields ++;
1572  h->cur_pic_ptr = NULL;
1573  h->first_field = FIELD_PICTURE(h);
1574  } else {
1575  h->missing_fields = 0;
1576  if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1579  /* This and the previous field had different frame_nums.
1580  * Consider this field first in pair. Throw away previous
1581  * one except for reference purposes. */
1582  h->first_field = 1;
1583  h->cur_pic_ptr = NULL;
1584  } else if (h->cur_pic_ptr->reference & DELAYED_PIC_REF) {
1585  /* This frame was already output, we cannot draw into it
1586  * anymore.
1587  */
1588  h->first_field = 1;
1589  h->cur_pic_ptr = NULL;
1590  } else {
1591  /* Second field in complementary pair */
1592  h->first_field = 0;
1593  }
1594  }
1595  } else {
1596  /* Frame or first field in a potentially complementary pair */
1597  h->first_field = FIELD_PICTURE(h);
1598  }
1599 
1600  if (!FIELD_PICTURE(h) || h->first_field) {
1601  if (h264_frame_start(h) < 0) {
1602  h->first_field = 0;
1603  return AVERROR_INVALIDDATA;
1604  }
1605  } else {
1606  int field = h->picture_structure == PICT_BOTTOM_FIELD;
1608  h->cur_pic_ptr->tf.owner[field] = h->avctx;
1609  }
1610  /* Some macroblocks can be accessed before they're available in case
1611  * of lost slices, MBAFF or threading. */
1612  if (FIELD_PICTURE(h)) {
1613  for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++)
1614  memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table));
1615  } else {
1616  memset(h->slice_table, -1,
1617  (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
1618  }
1619 
1621  h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
1622 
1623  memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1624  h->nb_mmco = sl->nb_mmco;
1626 
1627  h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1628 
1629  if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
1630  const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
1631 
1632  if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
1633  h->valid_recovery_point = 1;
1634 
1635  if ( h->recovery_frame < 0
1636  || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
1637  h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
1638 
1639  if (!h->valid_recovery_point)
1640  h->recovery_frame = h->poc.frame_num;
1641  }
1642  }
1643 
1644  h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE);
1645 
1646  if (nal->type == H264_NAL_IDR_SLICE ||
1647  (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
1648  h->recovery_frame = -1;
1649  h->cur_pic_ptr->recovered = 1;
1650  }
1651  // If we have an IDR, all frames after it in decoded order are
1652  // "recovered".
1653  if (nal->type == H264_NAL_IDR_SLICE)
1655 #if 1
1657 #else
1659 #endif
1660 
1661  /* Set the frame properties/side data. Only done for the second field in
1662  * field coded frames, since some SEI information is present for each field
1663  * and is merged by the SEI parsing code. */
1664  if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) {
1665  ret = h264_export_frame_props(h);
1666  if (ret < 0)
1667  return ret;
1668 
1669  ret = h264_select_output_frame(h);
1670  if (ret < 0)
1671  return ret;
1672  }
1673 
1674  return 0;
1675 }
1676 
1678  const H2645NAL *nal)
1679 {
1680  const SPS *sps;
1681  const PPS *pps;
1682  int ret;
1683  unsigned int slice_type, tmp, i;
1684  int field_pic_flag, bottom_field_flag;
1685  int first_slice = sl == h->slice_ctx && !h->current_slice;
1686  int picture_structure;
1687 
1688  if (first_slice)
1690 
1691  sl->first_mb_addr = get_ue_golomb_long(&sl->gb);
1692 
1693  slice_type = get_ue_golomb_31(&sl->gb);
1694  if (slice_type > 9) {
1696  "slice type %d too large at %d\n",
1697  slice_type, sl->first_mb_addr);
1698  return AVERROR_INVALIDDATA;
1699  }
1700  if (slice_type > 4) {
1701  slice_type -= 5;
1702  sl->slice_type_fixed = 1;
1703  } else
1704  sl->slice_type_fixed = 0;
1705 
1706  slice_type = ff_h264_golomb_to_pict_type[slice_type];
1707  sl->slice_type = slice_type;
1708  sl->slice_type_nos = slice_type & 3;
1709 
1710  if (nal->type == H264_NAL_IDR_SLICE &&
1712  av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
1713  return AVERROR_INVALIDDATA;
1714  }
1715 
1716  sl->pps_id = get_ue_golomb(&sl->gb);
1717  if (sl->pps_id >= MAX_PPS_COUNT) {
1718  av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
1719  return AVERROR_INVALIDDATA;
1720  }
1721  if (!h->ps.pps_list[sl->pps_id]) {
1723  "non-existing PPS %u referenced\n",
1724  sl->pps_id);
1725  return AVERROR_INVALIDDATA;
1726  }
1727  pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
1728 
1729  if (!h->ps.sps_list[pps->sps_id]) {
1731  "non-existing SPS %u referenced\n", pps->sps_id);
1732  return AVERROR_INVALIDDATA;
1733  }
1734  sps = (const SPS*)h->ps.sps_list[pps->sps_id]->data;
1735 
1736  sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
1737  if (!first_slice) {
1738  if (h->poc.frame_num != sl->frame_num) {
1739  av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n",
1740  h->poc.frame_num, sl->frame_num);
1741  return AVERROR_INVALIDDATA;
1742  }
1743  }
1744 
1745  sl->mb_mbaff = 0;
1746 
1747  if (sps->frame_mbs_only_flag) {
1748  picture_structure = PICT_FRAME;
1749  } else {
1750  if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
1751  av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
1752  return -1;
1753  }
1754  field_pic_flag = get_bits1(&sl->gb);
1755  if (field_pic_flag) {
1756  bottom_field_flag = get_bits1(&sl->gb);
1757  picture_structure = PICT_TOP_FIELD + bottom_field_flag;
1758  } else {
1759  picture_structure = PICT_FRAME;
1760  }
1761  }
1762  sl->picture_structure = picture_structure;
1763  sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
1764 
1765  if (picture_structure == PICT_FRAME) {
1766  sl->curr_pic_num = sl->frame_num;
1767  sl->max_pic_num = 1 << sps->log2_max_frame_num;
1768  } else {
1769  sl->curr_pic_num = 2 * sl->frame_num + 1;
1770  sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
1771  }
1772 
1773  if (nal->type == H264_NAL_IDR_SLICE)
1774  get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1775 
1776  if (sps->poc_type == 0) {
1777  sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1778 
1779  if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1780  sl->delta_poc_bottom = get_se_golomb(&sl->gb);
1781  }
1782 
1783  if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
1784  sl->delta_poc[0] = get_se_golomb(&sl->gb);
1785 
1786  if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1787  sl->delta_poc[1] = get_se_golomb(&sl->gb);
1788  }
1789 
1790  sl->redundant_pic_count = 0;
1791  if (pps->redundant_pic_cnt_present)
1792  sl->redundant_pic_count = get_ue_golomb(&sl->gb);
1793 
1794  if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1795  sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1796 
1798  &sl->gb, pps, sl->slice_type_nos,
1799  picture_structure, h->avctx);
1800  if (ret < 0)
1801  return ret;
1802 
1803  if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1805  if (ret < 0) {
1806  sl->ref_count[1] = sl->ref_count[0] = 0;
1807  return ret;
1808  }
1809  }
1810 
1811  sl->pwt.use_weight = 0;
1812  for (i = 0; i < 2; i++) {
1813  sl->pwt.luma_weight_flag[i] = 0;
1814  sl->pwt.chroma_weight_flag[i] = 0;
1815  }
1816  if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1817  (pps->weighted_bipred_idc == 1 &&
1819  ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
1820  sl->slice_type_nos, &sl->pwt,
1821  picture_structure, h->avctx);
1822  if (ret < 0)
1823  return ret;
1824  }
1825 
1826  sl->explicit_ref_marking = 0;
1827  if (nal->ref_idc) {
1828  ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1829  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1830  return AVERROR_INVALIDDATA;
1831  }
1832 
1833  if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1834  tmp = get_ue_golomb_31(&sl->gb);
1835  if (tmp > 2) {
1836  av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
1837  return AVERROR_INVALIDDATA;
1838  }
1839  sl->cabac_init_idc = tmp;
1840  }
1841 
1842  sl->last_qscale_diff = 0;
1843  tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
1844  if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
1845  av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
1846  return AVERROR_INVALIDDATA;
1847  }
1848  sl->qscale = tmp;
1849  sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1850  sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
1851  // FIXME qscale / qp ... stuff
1852  if (sl->slice_type == AV_PICTURE_TYPE_SP)
1853  get_bits1(&sl->gb); /* sp_for_switch_flag */
1854  if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1856  get_se_golomb(&sl->gb); /* slice_qs_delta */
1857 
1858  sl->deblocking_filter = 1;
1859  sl->slice_alpha_c0_offset = 0;
1860  sl->slice_beta_offset = 0;
1862  tmp = get_ue_golomb_31(&sl->gb);
1863  if (tmp > 2) {
1865  "deblocking_filter_idc %u out of range\n", tmp);
1866  return AVERROR_INVALIDDATA;
1867  }
1868  sl->deblocking_filter = tmp;
1869  if (sl->deblocking_filter < 2)
1870  sl->deblocking_filter ^= 1; // 1<->0
1871 
1872  if (sl->deblocking_filter) {
1873  int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb);
1874  int slice_beta_offset_div2 = get_se_golomb(&sl->gb);
1875  if (slice_alpha_c0_offset_div2 > 6 ||
1876  slice_alpha_c0_offset_div2 < -6 ||
1877  slice_beta_offset_div2 > 6 ||
1878  slice_beta_offset_div2 < -6) {
1880  "deblocking filter parameters %d %d out of range\n",
1881  slice_alpha_c0_offset_div2, slice_beta_offset_div2);
1882  return AVERROR_INVALIDDATA;
1883  }
1884  sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2;
1885  sl->slice_beta_offset = slice_beta_offset_div2 * 2;
1886  }
1887  }
1888 
1889  return 0;
1890 }
1891 
1892 /* do all the per-slice initialization needed before we can start decoding the
1893  * actual MBs */
1895  const H2645NAL *nal)
1896 {
1897  int i, j, ret = 0;
1898 
1899  if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1900  av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1901  return AVERROR_INVALIDDATA;
1902  }
1903 
1904  av_assert1(h->mb_num == h->mb_width * h->mb_height);
1905  if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1906  sl->first_mb_addr >= h->mb_num) {
1907  av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1908  return AVERROR_INVALIDDATA;
1909  }
1910  sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1911  sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1914  sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1915  av_assert1(sl->mb_y < h->mb_height);
1916 
1917  ret = ff_h264_build_ref_list(h, sl);
1918  if (ret < 0)
1919  return ret;
1920 
1921  if (h->ps.pps->weighted_bipred_idc == 2 &&
1923  implicit_weight_table(h, sl, -1);
1924  if (FRAME_MBAFF(h)) {
1925  implicit_weight_table(h, sl, 0);
1926  implicit_weight_table(h, sl, 1);
1927  }
1928  }
1929 
1932  if (!h->setup_finished)
1934 
1935  if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
1943  nal->ref_idc == 0))
1944  sl->deblocking_filter = 0;
1945 
1946  if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
1947  if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
1948  /* Cheat slightly for speed:
1949  * Do not bother to deblock across slices. */
1950  sl->deblocking_filter = 2;
1951  } else {
1952  h->postpone_filter = 1;
1953  }
1954  }
1955  sl->qp_thresh = 15 -
1957  FFMAX3(0,
1958  h->ps.pps->chroma_qp_index_offset[0],
1959  h->ps.pps->chroma_qp_index_offset[1]) +
1960  6 * (h->ps.sps->bit_depth_luma - 8);
1961 
1962  sl->slice_num = ++h->current_slice;
1963 
1964  if (sl->slice_num)
1965  h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y;
1966  if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y
1967  && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y
1968  && sl->slice_num >= MAX_SLICES) {
1969  //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
1970  av_log(h->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", sl->slice_num, MAX_SLICES);
1971  }
1972 
1973  for (j = 0; j < 2; j++) {
1974  int id_list[16];
1975  int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
1976  for (i = 0; i < 16; i++) {
1977  id_list[i] = 60;
1978  if (j < sl->list_count && i < sl->ref_count[j] &&
1979  sl->ref_list[j][i].parent->f->buf[0]) {
1980  int k;
1981  AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
1982  for (k = 0; k < h->short_ref_count; k++)
1983  if (h->short_ref[k]->f->buf[0]->buffer == buf) {
1984  id_list[i] = k;
1985  break;
1986  }
1987  for (k = 0; k < h->long_ref_count; k++)
1988  if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
1989  id_list[i] = h->short_ref_count + k;
1990  break;
1991  }
1992  }
1993  }
1994 
1995  ref2frm[0] =
1996  ref2frm[1] = -1;
1997  for (i = 0; i < 16; i++)
1998  ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
1999  ref2frm[18 + 0] =
2000  ref2frm[18 + 1] = -1;
2001  for (i = 16; i < 48; i++)
2002  ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
2003  (sl->ref_list[j][i].reference & 3);
2004  }
2005 
2006  if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
2008  "slice:%d %s mb:%d %c%s%s frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
2009  sl->slice_num,
2010  (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
2011  sl->mb_y * h->mb_width + sl->mb_x,
2013  sl->slice_type_fixed ? " fix" : "",
2014  nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
2015  h->poc.frame_num,
2016  h->cur_pic_ptr->field_poc[0],
2017  h->cur_pic_ptr->field_poc[1],
2018  sl->ref_count[0], sl->ref_count[1],
2019  sl->qscale,
2020  sl->deblocking_filter,
2022  sl->pwt.use_weight,
2023  sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
2024  sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
2025  }
2026 
2027  return 0;
2028 }
2029 
2031 {
2033  int first_slice = sl == h->slice_ctx && !h->current_slice;
2034  int ret;
2035 
2036  sl->gb = nal->gb;
2037 
2038  ret = h264_slice_header_parse(h, sl, nal);
2039  if (ret < 0)
2040  return ret;
2041 
2042  // discard redundant pictures
2043  if (sl->redundant_pic_count > 0) {
2044  sl->ref_count[0] = sl->ref_count[1] = 0;
2045  return 0;
2046  }
2047 
2048  if (sl->first_mb_addr == 0 || !h->current_slice) {
2049  if (h->setup_finished) {
2050  av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n");
2051  return AVERROR_INVALIDDATA;
2052  }
2053  }
2054 
2055  if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
2056  if (h->current_slice) {
2057  // this slice starts a new field
2058  // first decode any pending queued slices
2059  if (h->nb_slice_ctx_queued) {
2060  H264SliceContext tmp_ctx;
2061 
2063  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
2064  return ret;
2065 
2066  memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
2067  memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
2068  memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
2069  sl = h->slice_ctx;
2070  }
2071 
2072  if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) {
2073  ret = ff_h264_field_end(h, h->slice_ctx, 1);
2074  if (ret < 0)
2075  return ret;
2076  } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) {
2077  av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n");
2078  ret = ff_h264_field_end(h, h->slice_ctx, 1);
2079  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
2080  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
2081  h->cur_pic_ptr = NULL;
2082  if (ret < 0)
2083  return ret;
2084  } else
2085  return AVERROR_INVALIDDATA;
2086  }
2087 
2088  if (!h->first_field) {
2089  if (h->cur_pic_ptr && !h->droppable) {
2092  }
2093  h->cur_pic_ptr = NULL;
2094  }
2095  }
2096 
2097  if (!h->current_slice)
2098  av_assert0(sl == h->slice_ctx);
2099 
2100  if (h->current_slice == 0 && !h->first_field) {
2101  if (
2102  (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) ||
2106  h->avctx->skip_frame >= AVDISCARD_ALL) {
2107  return 0;
2108  }
2109  }
2110 
2111  if (!first_slice) {
2112  const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
2113 
2114  if (h->ps.pps->sps_id != pps->sps_id ||
2115  h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*||
2116  (h->setup_finished && h->ps.pps != pps)*/) {
2117  av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
2118  return AVERROR_INVALIDDATA;
2119  }
2120  if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
2122  "SPS changed in the middle of the frame\n");
2123  return AVERROR_INVALIDDATA;
2124  }
2125  }
2126 
2127  if (h->current_slice == 0) {
2128  ret = h264_field_start(h, sl, nal, first_slice);
2129  if (ret < 0)
2130  return ret;
2131  } else {
2132  if (h->picture_structure != sl->picture_structure ||
2133  h->droppable != (nal->ref_idc == 0)) {
2135  "Changing field mode (%d -> %d) between slices is not allowed\n",
2137  return AVERROR_INVALIDDATA;
2138  } else if (!h->cur_pic_ptr) {
2140  "unset cur_pic_ptr on slice %d\n",
2141  h->current_slice + 1);
2142  return AVERROR_INVALIDDATA;
2143  }
2144  }
2145 
2146  ret = h264_slice_init(h, sl, nal);
2147  if (ret < 0)
2148  return ret;
2149 
2150  h->nb_slice_ctx_queued++;
2151 
2152  return 0;
2153 }
2154 
2156 {
2157  switch (sl->slice_type) {
2158  case AV_PICTURE_TYPE_P:
2159  return 0;
2160  case AV_PICTURE_TYPE_B:
2161  return 1;
2162  case AV_PICTURE_TYPE_I:
2163  return 2;
2164  case AV_PICTURE_TYPE_SP:
2165  return 3;
2166  case AV_PICTURE_TYPE_SI:
2167  return 4;
2168  default:
2169  return AVERROR_INVALIDDATA;
2170  }
2171 }
2172 
2174  H264SliceContext *sl,
2175  int mb_type, int top_xy,
2176  int left_xy[LEFT_MBS],
2177  int top_type,
2178  int left_type[LEFT_MBS],
2179  int mb_xy, int list)
2180 {
2181  int b_stride = h->b_stride;
2182  int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
2183  int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
2184  if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
2185  if (USES_LIST(top_type, list)) {
2186  const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
2187  const int b8_xy = 4 * top_xy + 2;
2188  const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2189  AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
2190  ref_cache[0 - 1 * 8] =
2191  ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
2192  ref_cache[2 - 1 * 8] =
2193  ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
2194  } else {
2195  AV_ZERO128(mv_dst - 1 * 8);
2196  AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2197  }
2198 
2199  if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
2200  if (USES_LIST(left_type[LTOP], list)) {
2201  const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
2202  const int b8_xy = 4 * left_xy[LTOP] + 1;
2203  const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2204  AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
2205  AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
2206  AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
2207  AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
2208  ref_cache[-1 + 0] =
2209  ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
2210  ref_cache[-1 + 16] =
2211  ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
2212  } else {
2213  AV_ZERO32(mv_dst - 1 + 0);
2214  AV_ZERO32(mv_dst - 1 + 8);
2215  AV_ZERO32(mv_dst - 1 + 16);
2216  AV_ZERO32(mv_dst - 1 + 24);
2217  ref_cache[-1 + 0] =
2218  ref_cache[-1 + 8] =
2219  ref_cache[-1 + 16] =
2220  ref_cache[-1 + 24] = LIST_NOT_USED;
2221  }
2222  }
2223  }
2224 
2225  if (!USES_LIST(mb_type, list)) {
2226  fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
2227  AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2228  AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2229  AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2230  AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2231  return;
2232  }
2233 
2234  {
2235  int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
2236  const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2237  uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
2238  uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
2239  AV_WN32A(&ref_cache[0 * 8], ref01);
2240  AV_WN32A(&ref_cache[1 * 8], ref01);
2241  AV_WN32A(&ref_cache[2 * 8], ref23);
2242  AV_WN32A(&ref_cache[3 * 8], ref23);
2243  }
2244 
2245  {
2246  int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
2247  AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
2248  AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
2249  AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
2250  AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
2251  }
2252 }
2253 
2254 /**
2255  * @return non zero if the loop filter can be skipped
2256  */
2257 static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
2258 {
2259  const int mb_xy = sl->mb_xy;
2260  int top_xy, left_xy[LEFT_MBS];
2261  int top_type, left_type[LEFT_MBS];
2262  uint8_t *nnz;
2263  uint8_t *nnz_cache;
2264 
2265  top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
2266 
2267  left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
2268  if (FRAME_MBAFF(h)) {
2269  const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
2270  const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2271  if (sl->mb_y & 1) {
2272  if (left_mb_field_flag != curr_mb_field_flag)
2273  left_xy[LTOP] -= h->mb_stride;
2274  } else {
2275  if (curr_mb_field_flag)
2276  top_xy += h->mb_stride &
2277  (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
2278  if (left_mb_field_flag != curr_mb_field_flag)
2279  left_xy[LBOT] += h->mb_stride;
2280  }
2281  }
2282 
2283  sl->top_mb_xy = top_xy;
2284  sl->left_mb_xy[LTOP] = left_xy[LTOP];
2285  sl->left_mb_xy[LBOT] = left_xy[LBOT];
2286  {
2287  /* For sufficiently low qp, filtering wouldn't do anything.
2288  * This is a conservative estimate: could also check beta_offset
2289  * and more accurate chroma_qp. */
2290  int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
2291  int qp = h->cur_pic.qscale_table[mb_xy];
2292  if (qp <= qp_thresh &&
2293  (left_xy[LTOP] < 0 ||
2294  ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
2295  (top_xy < 0 ||
2296  ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
2297  if (!FRAME_MBAFF(h))
2298  return 1;
2299  if ((left_xy[LTOP] < 0 ||
2300  ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
2301  (top_xy < h->mb_stride ||
2302  ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
2303  return 1;
2304  }
2305  }
2306 
2307  top_type = h->cur_pic.mb_type[top_xy];
2308  left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
2309  left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
2310  if (sl->deblocking_filter == 2) {
2311  if (h->slice_table[top_xy] != sl->slice_num)
2312  top_type = 0;
2313  if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
2314  left_type[LTOP] = left_type[LBOT] = 0;
2315  } else {
2316  if (h->slice_table[top_xy] == 0xFFFF)
2317  top_type = 0;
2318  if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
2319  left_type[LTOP] = left_type[LBOT] = 0;
2320  }
2321  sl->top_type = top_type;
2322  sl->left_type[LTOP] = left_type[LTOP];
2323  sl->left_type[LBOT] = left_type[LBOT];
2324 
2325  if (IS_INTRA(mb_type))
2326  return 0;
2327 
2328  fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2329  top_type, left_type, mb_xy, 0);
2330  if (sl->list_count == 2)
2331  fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2332  top_type, left_type, mb_xy, 1);
2333 
2334  nnz = h->non_zero_count[mb_xy];
2335  nnz_cache = sl->non_zero_count_cache;
2336  AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
2337  AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
2338  AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
2339  AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
2340  sl->cbp = h->cbp_table[mb_xy];
2341 
2342  if (top_type) {
2343  nnz = h->non_zero_count[top_xy];
2344  AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
2345  }
2346 
2347  if (left_type[LTOP]) {
2348  nnz = h->non_zero_count[left_xy[LTOP]];
2349  nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
2350  nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
2351  nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
2352  nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
2353  }
2354 
2355  /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
2356  * from what the loop filter needs */
2357  if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
2358  if (IS_8x8DCT(top_type)) {
2359  nnz_cache[4 + 8 * 0] =
2360  nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
2361  nnz_cache[6 + 8 * 0] =
2362  nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
2363  }
2364  if (IS_8x8DCT(left_type[LTOP])) {
2365  nnz_cache[3 + 8 * 1] =
2366  nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
2367  }
2368  if (IS_8x8DCT(left_type[LBOT])) {
2369  nnz_cache[3 + 8 * 3] =
2370  nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
2371  }
2372 
2373  if (IS_8x8DCT(mb_type)) {
2374  nnz_cache[scan8[0]] =
2375  nnz_cache[scan8[1]] =
2376  nnz_cache[scan8[2]] =
2377  nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
2378 
2379  nnz_cache[scan8[0 + 4]] =
2380  nnz_cache[scan8[1 + 4]] =
2381  nnz_cache[scan8[2 + 4]] =
2382  nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
2383 
2384  nnz_cache[scan8[0 + 8]] =
2385  nnz_cache[scan8[1 + 8]] =
2386  nnz_cache[scan8[2 + 8]] =
2387  nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
2388 
2389  nnz_cache[scan8[0 + 12]] =
2390  nnz_cache[scan8[1 + 12]] =
2391  nnz_cache[scan8[2 + 12]] =
2392  nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
2393  }
2394  }
2395 
2396  return 0;
2397 }
2398 
2399 static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
2400 {
2401  uint8_t *dest_y, *dest_cb, *dest_cr;
2402  int linesize, uvlinesize, mb_x, mb_y;
2403  const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
2404  const int old_slice_type = sl->slice_type;
2405  const int pixel_shift = h->pixel_shift;
2406  const int block_h = 16 >> h->chroma_y_shift;
2407 
2408  if (h->postpone_filter)
2409  return;
2410 
2411  if (sl->deblocking_filter) {
2412  for (mb_x = start_x; mb_x < end_x; mb_x++)
2413  for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2414  int mb_xy, mb_type;
2415  mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
2416  mb_type = h->cur_pic.mb_type[mb_xy];
2417 
2418  if (FRAME_MBAFF(h))
2419  sl->mb_mbaff =
2420  sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2421 
2422  sl->mb_x = mb_x;
2423  sl->mb_y = mb_y;
2424  dest_y = h->cur_pic.f->data[0] +
2425  ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
2426  dest_cb = h->cur_pic.f->data[1] +
2427  (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2428  mb_y * sl->uvlinesize * block_h;
2429  dest_cr = h->cur_pic.f->data[2] +
2430  (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2431  mb_y * sl->uvlinesize * block_h;
2432  // FIXME simplify above
2433 
2434  if (MB_FIELD(sl)) {
2435  linesize = sl->mb_linesize = sl->linesize * 2;
2436  uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
2437  if (mb_y & 1) { // FIXME move out of this function?
2438  dest_y -= sl->linesize * 15;
2439  dest_cb -= sl->uvlinesize * (block_h - 1);
2440  dest_cr -= sl->uvlinesize * (block_h - 1);
2441  }
2442  } else {
2443  linesize = sl->mb_linesize = sl->linesize;
2444  uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
2445  }
2446  backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
2447  uvlinesize, 0);
2448  if (fill_filter_caches(h, sl, mb_type))
2449  continue;
2450  sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2451  sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
2452 
2453  if (FRAME_MBAFF(h)) {
2454  ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
2455  linesize, uvlinesize);
2456  } else {
2457  ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
2458  dest_cr, linesize, uvlinesize);
2459  }
2460  }
2461  }
2462  sl->slice_type = old_slice_type;
2463  sl->mb_x = end_x;
2464  sl->mb_y = end_mb_y - FRAME_MBAFF(h);
2465  sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2466  sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
2467 }
2468 
2470 {
2471  const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
2472  int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
2473  h->cur_pic.mb_type[mb_xy - 1] :
2474  (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
2475  h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
2476  sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2477 }
2478 
2479 /**
2480  * Draw edges and report progress for the last MB row.
2481  */
2483 {
2484  int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
2485  int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2486  int height = 16 << FRAME_MBAFF(h);
2487  int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2488 
2489  if (sl->deblocking_filter) {
2490  if ((top + height) >= pic_height)
2491  height += deblock_border;
2492  top -= deblock_border;
2493  }
2494 
2495  if (top >= pic_height || (top + height) < 0)
2496  return;
2497 
2498  height = FFMIN(height, pic_height - top);
2499  if (top < 0) {
2500  height = top + height;
2501  top = 0;
2502  }
2503 
2504  ff_h264_draw_horiz_band(h, sl, top, height);
2505 
2506  if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
2507  return;
2508 
2509  ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2511 }
2512 
2514  int startx, int starty,
2515  int endx, int endy, int status)
2516 {
2517  if (!sl->h264->enable_er)
2518  return;
2519 
2521  ERContext *er = &sl->h264->slice_ctx[0].er;
2522 
2523  ff_er_add_slice(er, startx, starty, endx, endy, status);
2524  }
2525 }
2526 
2527 static int decode_slice(struct AVCodecContext *avctx, void *arg)
2528 {
2529  H264SliceContext *sl = arg;
2530  const H264Context *h = sl->h264;
2531  int lf_x_start = sl->mb_x;
2532  int orig_deblock = sl->deblocking_filter;
2533  int ret;
2534 
2535  sl->linesize = h->cur_pic_ptr->f->linesize[0];
2536  sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
2537 
2538  ret = alloc_scratch_buffers(sl, sl->linesize);
2539  if (ret < 0)
2540  return ret;
2541 
2542  sl->mb_skip_run = -1;
2543 
2544  av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3));
2545 
2546  if (h->postpone_filter)
2547  sl->deblocking_filter = 0;
2548 
2549  sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
2550  (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
2551 
2553  const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
2554  if (start_i) {
2555  int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
2556  prev_status &= ~ VP_START;
2557  if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
2558  h->slice_ctx[0].er.error_occurred = 1;
2559  }
2560  }
2561 
2562  if (h->ps.pps->cabac) {
2563  /* realign */
2564  align_get_bits(&sl->gb);
2565 
2566  /* init cabac */
2567  ret = ff_init_cabac_decoder(&sl->cabac,
2568  sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2569  (get_bits_left(&sl->gb) + 7) / 8);
2570  if (ret < 0)
2571  return ret;
2572 
2574 
2575  for (;;) {
2576  // START_TIMER
2577  int ret, eos;
2578  if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2579  av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2580  sl->next_slice_idx);
2581  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2582  sl->mb_y, ER_MB_ERROR);
2583  return AVERROR_INVALIDDATA;
2584  }
2585 
2586  ret = ff_h264_decode_mb_cabac(h, sl);
2587  // STOP_TIMER("decode_mb_cabac")
2588 
2589  if (ret >= 0)
2590  ff_h264_hl_decode_mb(h, sl);
2591 
2592  // FIXME optimal? or let mb_decode decode 16x32 ?
2593  if (ret >= 0 && FRAME_MBAFF(h)) {
2594  sl->mb_y++;
2595 
2596  ret = ff_h264_decode_mb_cabac(h, sl);
2597 
2598  if (ret >= 0)
2599  ff_h264_hl_decode_mb(h, sl);
2600  sl->mb_y--;
2601  }
2602  eos = get_cabac_terminate(&sl->cabac);
2603 
2604  if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
2605  sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
2606  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2607  sl->mb_y, ER_MB_END);
2608  if (sl->mb_x >= lf_x_start)
2609  loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
2610  goto finish;
2611  }
2612  if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 )
2613  av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream);
2614  if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) {
2616  "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n",
2617  sl->mb_x, sl->mb_y,
2618  sl->cabac.bytestream_end - sl->cabac.bytestream);
2619  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2620  sl->mb_y, ER_MB_ERROR);
2621  return AVERROR_INVALIDDATA;
2622  }
2623 
2624  if (++sl->mb_x >= h->mb_width) {
2625  loop_filter(h, sl, lf_x_start, sl->mb_x);
2626  sl->mb_x = lf_x_start = 0;
2627  decode_finish_row(h, sl);
2628  ++sl->mb_y;
2629  if (FIELD_OR_MBAFF_PICTURE(h)) {
2630  ++sl->mb_y;
2631  if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2633  }
2634  }
2635 
2636  if (eos || sl->mb_y >= h->mb_height) {
2637  ff_tlog(h->avctx, "slice end %d %d\n",
2638  get_bits_count(&sl->gb), sl->gb.size_in_bits);
2639  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2640  sl->mb_y, ER_MB_END);
2641  if (sl->mb_x > lf_x_start)
2642  loop_filter(h, sl, lf_x_start, sl->mb_x);
2643  goto finish;
2644  }
2645  }
2646  } else {
2647  for (;;) {
2648  int ret;
2649 
2650  if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2651  av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2652  sl->next_slice_idx);
2653  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2654  sl->mb_y, ER_MB_ERROR);
2655  return AVERROR_INVALIDDATA;
2656  }
2657 
2658  ret = ff_h264_decode_mb_cavlc(h, sl);
2659 
2660  if (ret >= 0)
2661  ff_h264_hl_decode_mb(h, sl);
2662 
2663  // FIXME optimal? or let mb_decode decode 16x32 ?
2664  if (ret >= 0 && FRAME_MBAFF(h)) {
2665  sl->mb_y++;
2666  ret = ff_h264_decode_mb_cavlc(h, sl);
2667 
2668  if (ret >= 0)
2669  ff_h264_hl_decode_mb(h, sl);
2670  sl->mb_y--;
2671  }
2672 
2673  if (ret < 0) {
2675  "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
2676  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2677  sl->mb_y, ER_MB_ERROR);
2678  return ret;
2679  }
2680 
2681  if (++sl->mb_x >= h->mb_width) {
2682  loop_filter(h, sl, lf_x_start, sl->mb_x);
2683  sl->mb_x = lf_x_start = 0;
2684  decode_finish_row(h, sl);
2685  ++sl->mb_y;
2686  if (FIELD_OR_MBAFF_PICTURE(h)) {
2687  ++sl->mb_y;
2688  if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2690  }
2691  if (sl->mb_y >= h->mb_height) {
2692  ff_tlog(h->avctx, "slice end %d %d\n",
2693  get_bits_count(&sl->gb), sl->gb.size_in_bits);
2694 
2695  if ( get_bits_left(&sl->gb) == 0
2696  || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
2697  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2698  sl->mb_x - 1, sl->mb_y, ER_MB_END);
2699 
2700  goto finish;
2701  } else {
2702  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2703  sl->mb_x, sl->mb_y, ER_MB_END);
2704 
2705  return AVERROR_INVALIDDATA;
2706  }
2707  }
2708  }
2709 
2710  if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
2711  ff_tlog(h->avctx, "slice end %d %d\n",
2712  get_bits_count(&sl->gb), sl->gb.size_in_bits);
2713 
2714  if (get_bits_left(&sl->gb) == 0) {
2715  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2716  sl->mb_x - 1, sl->mb_y, ER_MB_END);
2717  if (sl->mb_x > lf_x_start)
2718  loop_filter(h, sl, lf_x_start, sl->mb_x);
2719 
2720  goto finish;
2721  } else {
2722  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2723  sl->mb_y, ER_MB_ERROR);
2724 
2725  return AVERROR_INVALIDDATA;
2726  }
2727  }
2728  }
2729  }
2730 
2731 finish:
2732  sl->deblocking_filter = orig_deblock;
2733  return 0;
2734 }
2735 
2736 /**
2737  * Call decode_slice() for each context.
2738  *
2739  * @param h h264 master context
2740  */
2742 {
2743  AVCodecContext *const avctx = h->avctx;
2744  H264SliceContext *sl;
2745  int context_count = h->nb_slice_ctx_queued;
2746  int ret = 0;
2747  int i, j;
2748 
2749  h->slice_ctx[0].next_slice_idx = INT_MAX;
2750 
2751  if (h->avctx->hwaccel || context_count < 1
2752 #if FF_API_CAP_VDPAU
2754 #endif
2755  )
2756  return 0;
2757 
2758  av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height);
2759 
2760  if (context_count == 1) {
2761 
2762  h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
2763  h->postpone_filter = 0;
2764 
2765  ret = decode_slice(avctx, &h->slice_ctx[0]);
2766  h->mb_y = h->slice_ctx[0].mb_y;
2767  if (ret < 0)
2768  goto finish;
2769  } else {
2770  av_assert0(context_count > 0);
2771  for (i = 0; i < context_count; i++) {
2772  int next_slice_idx = h->mb_width * h->mb_height;
2773  int slice_idx;
2774 
2775  sl = &h->slice_ctx[i];
2777  sl->er.error_count = 0;
2778  }
2779 
2780  /* make sure none of those slices overlap */
2781  slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2782  for (j = 0; j < context_count; j++) {
2783  H264SliceContext *sl2 = &h->slice_ctx[j];
2784  int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2785 
2786  if (i == j || slice_idx2 < slice_idx)
2787  continue;
2788  next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2789  }
2790  sl->next_slice_idx = next_slice_idx;
2791  }
2792 
2793  avctx->execute(avctx, decode_slice, h->slice_ctx,
2794  NULL, context_count, sizeof(h->slice_ctx[0]));
2795 
2796  /* pull back stuff from slices to master context */
2797  sl = &h->slice_ctx[context_count - 1];
2798  h->mb_y = sl->mb_y;
2800  for (i = 1; i < context_count; i++)
2802  }
2803 
2804  if (h->postpone_filter) {
2805  h->postpone_filter = 0;
2806 
2807  for (i = 0; i < context_count; i++) {
2808  int y_end, x_end;
2809 
2810  sl = &h->slice_ctx[i];
2811  y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2812  x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2813 
2814  for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2815  sl->mb_y = j;
2816  loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2817  j == y_end - 1 ? x_end : h->mb_width);
2818  }
2819  }
2820  }
2821  }
2822 
2823 finish:
2824  h->nb_slice_ctx_queued = 0;
2825  return ret;
2826 }
int chroma_format_idc
Definition: h264_ps.h:48
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:148
int video_signal_type_present_flag
Definition: h264_ps.h:74
struct H264Context * h264
Definition: h264dec.h:178
#define AV_EF_AGGRESSIVE
consider things that a sane encoder should not do as an error
Definition: avcodec.h:3066
#define ff_tlog(ctx,...)
Definition: internal.h:75
av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
Definition: videodsp.c:38
#define NULL
Definition: coverity.c:32
int ff_thread_can_start_frame(AVCodecContext *avctx)
const struct AVCodec * codec
Definition: avcodec.h:1770
AVRational framerate
Definition: avcodec.h:3460
discard all frames except keyframes
Definition: avcodec.h:829
int nb_mmco
Definition: h264dec.h:473
int workaround_bugs
Definition: h264dec.h:367
int long_ref
1->long term reference 0->short term reference
Definition: h264dec.h:154
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int sei_recovery_frame_cnt
Definition: h264dec.h:163
int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
Submit a slice for decoding.
Definition: h264_slice.c:2030
H264POCContext poc
Definition: h264dec.h:459
int mb_num
Definition: h264dec.h:436
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:125
int mb_aff_frame
Definition: h264dec.h:405
int recovery_frame_cnt
recovery_frame_cnt
Definition: h264_sei.h:112
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264dec.h:299
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:393
static int get_se_golomb(GetBitContext *gb)
read signed exp golomb code.
Definition: golomb.h:185
int edge_emu_buffer_allocated
Definition: h264dec.h:287
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1963
static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
Draw edges and report progress for the last MB row.
Definition: h264_slice.c:2482
const char * fmt
Definition: avisynth_c.h:769
int first_field
Definition: h264dec.h:407
uint8_t field_scan8x8_q0[64]
Definition: h264dec.h:430
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:262
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define ER_MB_END
AVFrame * f
Definition: thread.h:36
int weighted_bipred_idc
Definition: h264_ps.h:117
int ff_h264_build_ref_list(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:299
int left_mb_xy[LEFT_MBS]
Definition: h264dec.h:211
int chroma_qp_index_offset[2]
Definition: h264_ps.h:120
AVBufferRef * sps_list[MAX_SPS_COUNT]
Definition: h264_ps.h:139
const uint8_t * bytestream_end
Definition: cabac.h:49
static av_always_inline int get_chroma_qp(const PPS *pps, int t, int qscale)
Get the chroma qp.
Definition: h264dec.h:680
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:393
hardware decoding through Videotoolbox
Definition: pixfmt.h:300
H264ChromaContext h264chroma
Definition: h264dec.h:342
uint16_t * cbp_table
Definition: h264dec.h:412
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264_parse.h:35
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264dec.h:472
static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
Initialize implicit_weight table.
Definition: h264_slice.c:658
#define avpriv_request_sample(...)
Sequence parameter set.
Definition: h264_ps.h:44
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2498
int mb_y
Definition: h264dec.h:433
int coded_picture_number
Definition: h264dec.h:363
int bitstream_restriction_flag
Definition: h264_ps.h:85
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:184
H264SEIAlternativeTransfer alternative_transfer
Definition: h264_sei.h:164
int num
Numerator.
Definition: rational.h:59
AVBufferRef * mb_type_buf
Definition: h264dec.h:138
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:343
int bipred_scratchpad_allocated
Definition: h264dec.h:286
Views are next to each other, but when upscaling apply a checkerboard pattern.
Definition: stereo3d.h:117
#define DELAYED_PIC_REF
Value of Picture.reference when Picture is not a reference picture, but is held for delayed output...
Definition: diracdec.c:66
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:399
#define VP_START
< current MB is the first after a resync marker
AVBufferPool * mb_type_pool
Definition: h264dec.h:549
int ff_h264_init_poc(int pic_field_poc[2], int *pic_poc, const SPS *sps, H264POCContext *pc, int picture_structure, int nal_ref_idc)
Definition: h264_parse.c:272
int chroma_x_shift
Definition: h264dec.h:360
const uint8_t * buffer
Definition: get_bits.h:57
Picture parameter set.
Definition: h264_ps.h:109
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:2172
int16_t(*[2] motion_val)[2]
Definition: h264dec.h:136
int flags
Definition: h264dec.h:366
void ff_h264_flush_change(H264Context *h)
Definition: h264dec.c:483
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1989
int frame_mbs_only_flag
Definition: h264_ps.h:62
int mb_height
Definition: h264dec.h:434
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264dec.h:464
int is_avc
Used to parse AVC variant of H.264.
Definition: h264dec.h:449
av_cold void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, int chroma_format_idc)
Set the intra prediction function pointers.
Definition: h264pred.c:411
AVBufferPool * ref_index_pool
Definition: h264dec.h:551
int height_from_caller
Definition: h264dec.h:542
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264dec.h:422
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:387
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
ERPicture last_pic
H264SEIDisplayOrientation display_orientation
Definition: h264_sei.h:162
mpegvideo header.
int next_slice_idx
Definition: h264dec.h:236
static const uint8_t zigzag_scan8x8_cavlc[64+1]
Definition: h264_slice.c:97
H264Context.
Definition: h264dec.h:337
discard all non intra frames
Definition: avcodec.h:828
discard all
Definition: avcodec.h:830
AVFrame * f
Definition: h264dec.h:129
Views are next to each other.
Definition: stereo3d.h:67
size_t crop_bottom
Definition: frame.h:560
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3164
uint32_t num_units_in_tick
Definition: h264_ps.h:81
static const uint8_t field_scan[16+1]
Definition: h264_slice.c:51
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
H264Picture * long_ref[32]
Definition: h264dec.h:463
#define src
Definition: vp8dsp.c:254
int profile
profile
Definition: avcodec.h:3266
int picture_structure
Definition: h264dec.h:406
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
Definition: pixfmt.h:489
#define AV_WN32A(p, v)
Definition: intreadwrite.h:543
#define AV_COPY32(d, s)
Definition: intreadwrite.h:591
void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip)
Flip the input matrix horizontally and/or vertically.
Definition: display.c:65
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264dec.h:267
#define IN_RANGE(a, b, size)
Definition: h264_slice.c:265
#define REBASE_PICTURE(pic, new_ctx, old_ctx)
Definition: h264_slice.c:267
MMCO mmco[MAX_MMCO_COUNT]
Definition: h264dec.h:322
void av_display_rotation_set(int32_t matrix[9], double angle)
Initialize a transformation matrix describing a pure counterclockwise rotation by the specified angle...
Definition: display.c:50
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:288
Switching Intra.
Definition: avutil.h:278
int setup_finished
Definition: h264dec.h:533
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:3386
int ff_h264_execute_decode_slices(H264Context *h)
Call decode_slice() for each context.
Definition: h264_slice.c:2741
H264SEIContext sei
Definition: h264dec.h:546
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:3082
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264_ps.h:70
#define USES_LIST(a, list)
Definition: mpegutils.h:101
void ff_color_frame(AVFrame *frame, const int color[4])
Definition: utils.c:525
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
const uint8_t * bytestream
Definition: cabac.h:48
int ref2frm[MAX_SLICES][2][64]
reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 ...
Definition: h264dec.h:552
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264_ps.h:121
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:106
const PPS * pps
Definition: h264_ps.h:145
4: bottom field, top field, in that order
Definition: h264_sei.h:48
static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
Definition: h264_slice.c:1012
uint8_t
int full_range
Definition: h264_ps.h:75
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264_ps.h:68
int gaps_in_frame_num_allowed_flag
Definition: h264_ps.h:58
#define MB_MBAFF(h)
Definition: h264dec.h:71
int slice_alpha_c0_offset
Definition: h264dec.h:194
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
Definition: stereo3d.h:157
int poc
Definition: h264dec.h:171
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:126
int field_picture
whether or not picture was encoded in separate fields
Definition: h264dec.h:158
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264_ps.h:99
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:799
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:3004
size_t crop_left
Definition: frame.h:561
enum AVColorPrimaries color_primaries
Definition: h264_ps.h:77
int poc
frame POC
Definition: h264dec.h:148
int frame_num_offset
for POC type 2
Definition: h264_parse.h:51
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264_parse.h:36
Multithreading support functions.
#define ER_MB_ERROR
int cabac
entropy_coding_mode_flag
Definition: h264_ps.h:111
#define MB_FIELD(sl)
Definition: h264dec.h:72
const char * from
Definition: jacosubdec.c:65
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264_ps.h:69
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:398
int invalid_gap
Definition: h264dec.h:162
#define FF_API_CAP_VDPAU
Definition: version.h:70
ERPicture cur_pic
int frame_recovered
Initial frame has been completely recovered.
Definition: h264dec.h:523
Structure to hold side data for an AVFrame.
Definition: frame.h:163
int height
Definition: h264dec.h:359
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
#define height
#define MAX_PPS_COUNT
Definition: h264_ps.h:38
int pt
Definition: rtp.c:35
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264_ps.h:49
static void finish(void)
Definition: movenc.c:344
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:200
void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
char av_get_picture_type_char(enum AVPictureType pict_type)
Return a single letter to describe the given picture type pict_type.
Definition: utils.c:91
#define AV_CODEC_CAP_HWACCEL_VDPAU
Codec can export data for HW decoding (VDPAU).
Definition: avcodec.h:1038
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define ER_MV_END
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
Definition: utils.c:226
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264_ps.h:123
int picture_structure
Definition: h264dec.h:240
int chroma_y_shift
Definition: h264dec.h:360
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:55
AVBufferRef * qscale_table_buf
Definition: h264dec.h:132
static int h264_export_frame_props(H264Context *h)
Definition: h264_slice.c:1142
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:388
H264Picture * parent
Definition: h264dec.h:174
#define FRAME_RECOVERED_SEI
Sufficient number of frames have been decoded since a SEI recovery point, so all the following frames...
Definition: h264dec.h:521
H264SEIAFD afd
Definition: h264_sei.h:156
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:904
high precision timer, useful to profile code
int recovered
picture at IDR or recovery point + recovery count
Definition: h264dec.h:161
Active Format Description data consisting of a single byte as specified in ETSI TS 101 154 using AVAc...
Definition: frame.h:89
#define AV_COPY64(d, s)
Definition: intreadwrite.h:595
int ff_h264_decode_ref_pic_list_reordering(H264SliceContext *sl, void *logctx)
Definition: h264_refs.c:423
#define FFALIGN(x, a)
Definition: macros.h:48
int chroma_qp[2]
Definition: h264dec.h:188
#define av_log(a,...)
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264dec.h:465
const char * to
Definition: webvttdec.c:34
void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:121
int width
Definition: h264dec.h:359
static int h264_frame_start(H264Context *h)
Definition: h264_slice.c:448
int a53_caption_size
Definition: h264_sei.h:96
H.264 common definitions.
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264dec.c:102
#define U(x)
Definition: vp56_arith.h:37
#define HWACCEL_MAX
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:589
H.264 parameter set handling.
H264Picture DPB[H264_MAX_PICTURE_COUNT]
Definition: h264dec.h:345
enum AVColorTransferCharacteristic color_trc
Definition: h264_ps.h:78
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264_ps.h:63
H264PredContext hpc
Definition: h264dec.h:385
AVBufferRef * sps_ref
Definition: h264_ps.h:143
int chroma_log2_weight_denom
Definition: h264_parse.h:34
int width
Definition: frame.h:259
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:2083
#define td
Definition: regdef.h:70
int flags
Additional information about the frame packing.
Definition: stereo3d.h:166
static int get_ue_golomb(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to 8190.
Definition: golomb.h:55
static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
Definition: h264_slice.c:129
int poc_type
pic_order_cnt_type
Definition: h264_ps.h:51
void ff_er_add_slice(ERContext *s, int startx, int starty, int endx, int endy, int status)
Add a slice.
int context_initialized
Definition: h264dec.h:365
#define PTRDIFF_SPECIFIER
Definition: internal.h:256
ERContext er
Definition: h264dec.h:180
int nal_unit_type
Definition: h264dec.h:442
int ff_h264_decode_ref_pic_marking(H264SliceContext *sl, GetBitContext *gb, const H2645NAL *nal, void *logctx)
Definition: h264_refs.c:826
int ff_h264_get_profile(const SPS *sps)
Compute profile from profile_idc and constraint_set?_flags.
Definition: h264_parse.c:507
int num_reorder_frames
Definition: h264_ps.h:86
discard all bidirectional frames
Definition: avcodec.h:827
#define AVERROR(e)
Definition: error.h:43
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264dec.h:142
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2447
Display matrix.
Views are packed per line, as if interlaced.
Definition: stereo3d.h:129
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:3211
static const uint8_t field_scan8x8[64+1]
Definition: h264_slice.c:58
int capabilities
Codec capabilities.
Definition: avcodec.h:3758
const uint8_t ff_zigzag_scan[16+1]
Definition: mathtables.c:109
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
#define FIELD_PICTURE(h)
Definition: h264dec.h:74
int picture_idr
Definition: h264dec.h:377
static int init_dimensions(H264Context *h)
Definition: h264_slice.c:870
const char * arg
Definition: jacosubdec.c:66
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264dec.h:193
uint8_t(*[2] mvd_table)[2]
Definition: h264dec.h:416
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264dec.h:497
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1856
static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264_slice.c:2257
uint16_t width
Definition: gdv.c:47
ThreadFrame tf
Definition: h264dec.h:130
simple assert() macros that are a bit more flexible than ISO C assert().
uint8_t(*[2] top_borders)[(16 *3) *2]
Definition: h264dec.h:285
int weighted_pred
weighted_pred_flag
Definition: h264_ps.h:116
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
H264QpelContext h264qpel
Definition: h264dec.h:343
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:386
int direct_spatial_mv_pred
Definition: h264dec.h:251
H264SEIUnregistered unregistered
Definition: h264_sei.h:158
HW acceleration through VDA, data[3] contains a CVPixelBufferRef.
Definition: pixfmt.h:228
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264dec.h:149
const uint8_t ff_h264_golomb_to_pict_type[5]
Definition: h264data.c:37
#define MAX_SLICES
Definition: dxva2_hevc.c:33
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264dec.h:502
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:2155
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:109
uint8_t active_format_description
Definition: h264_sei.h:92
int delta_pic_order_always_zero_flag
Definition: h264_ps.h:53
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
Definition: imgutils.c:385
int * mb_index2xy
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264dec.h:184
uint8_t zigzag_scan8x8[64]
Definition: h264dec.h:421
AVBufferRef * hwaccel_priv_buf
Definition: h264dec.h:141
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
AVStereo3D * av_stereo3d_create_side_data(AVFrame *frame)
Allocate a complete AVFrameSideData and add it to the frame.
Definition: stereo3d.c:33
int crop_bottom
Definition: h264dec.h:382
uint8_t * error_status_table
size_t crop_top
Definition: frame.h:559
Views are alternated temporally.
Definition: stereo3d.h:92
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
Definition: mem.c:481
int ff_h264_parse_ref_count(int *plist_count, int ref_count[2], GetBitContext *gb, const PPS *pps, int slice_type_nos, int picture_structure, void *logctx)
Definition: h264_parse.c:219
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264dec.h:450
useful rectangle filling function
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:381
int refs
number of reference frames
Definition: avcodec.h:2442
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264_parse.h:49
AVBufferRef * motion_val_buf[2]
Definition: h264dec.h:135
int ref_frame_count
num_ref_frames
Definition: h264_ps.h:57
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3760
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:439
H264_SEI_PicStructType pic_struct
Definition: h264_sei.h:70
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:3050
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
int ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264_sei.h:77
void av_fast_mallocz(void *ptr, unsigned int *size, size_t min_size)
Allocate and clear a buffer, reusing the given one if large enough.
Definition: mem.c:486
#define FFMIN(a, b)
Definition: common.h:96
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264dec.h:402
static void copy_picture_range(H264Picture **to, H264Picture **from, int count, H264Context *new_base, H264Context *old_base)
Definition: h264_slice.c:272
static int h264_field_start(H264Context *h, const H264SliceContext *sl, const H2645NAL *nal, int first_slice)
Definition: h264_slice.c:1406
uint8_t field_scan8x8_cavlc[64]
Definition: h264dec.h:425
#define IS_DIRECT(a)
Definition: mpegutils.h:86
CABACContext cabac
Cabac.
Definition: h264dec.h:318
int colour_description_present_flag
Definition: h264_ps.h:76
unsigned int first_mb_addr
Definition: h264dec.h:234
int reference
Definition: h264dec.h:160
static void er_add_slice(H264SliceContext *sl, int startx, int starty, int endx, int endy, int status)
Definition: h264_slice.c:2513
#define LEFT_MBS
Definition: h264dec.h:75
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AVRational sar
Definition: h264_ps.h:73
int width
picture width / height.
Definition: avcodec.h:1948
int redundant_pic_count
Definition: h264dec.h:244
int nb_slice_ctx
Definition: h264dec.h:351
H264PredWeightTable pwt
Definition: h264dec.h:197
int long_ref_count
number of actual long term references
Definition: h264dec.h:477
#define ER_DC_END
uint32_t * mb_type
Definition: h264dec.h:139
#define AV_FRAME_FLAG_CORRUPT
The frame data may be corrupted, e.g.
Definition: frame.h:427
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
Definition: h264_slice.c:1023
int size_in_bits
Definition: get_bits.h:59
int32_t
int ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size)
Definition: cabac.c:177
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2477
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:3204
Context Adaptive Binary Arithmetic Coder inline functions.
int level
level
Definition: avcodec.h:3364
int init_qp
pic_init_qp_minus26 + 26
Definition: h264_ps.h:118
H.264 / AVC / MPEG-4 part10 codec.
int mmco_reset
Definition: h264dec.h:474
H264SliceContext * slice_ctx
Definition: h264dec.h:350
int direct_8x8_inference_flag
Definition: h264_ps.h:64
static int h264_select_output_frame(H264Context *h)
Definition: h264_slice.c:1303
#define CONFIG_GRAY
Definition: config.h:528
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:3061
int reference
Definition: h264dec.h:170
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:1907
int top_borders_allocated[2]
Definition: h264dec.h:288
static void fill_rectangle(int x, int y, int w, int h)
Definition: ffplay.c:822
#define FIELD_OR_MBAFF_PICTURE(h)
Definition: h264dec.h:91
uint8_t * a53_caption
Definition: h264_sei.h:97
int ref_idc
H.264 only, nal_ref_idc.
Definition: h2645_parse.h:65
static void init_scan_tables(H264Context *h)
initialize scan tables
Definition: h264_slice.c:722
static int av_unused get_cabac_terminate(CABACContext *c)
int quincunx_sampling_flag
Definition: h264_sei.h:127
if(ret< 0)
Definition: vf_mcdeint.c:279
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:382
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:401
int type
NAL unit type.
Definition: h2645_parse.h:52
#define FF_ARRAY_ELEMS(a)
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:514
static int init_table_pools(H264Context *h)
Definition: h264_slice.c:161
uint8_t * edge_emu_buffer
Definition: h264dec.h:284
static unsigned get_ue_golomb_long(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
Definition: golomb.h:87
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int pic_order_present
pic_order_present_flag
Definition: h264_ps.h:112
uint8_t zigzag_scan_q0[16]
Definition: h264dec.h:426
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:274
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264dec.h:452
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264dec.h:453
VideoDSPContext vdsp
Definition: h264dec.h:340
int timing_info_present_flag
Definition: h264_ps.h:80
int coded_picture_number
picture number in bitstream order
Definition: frame.h:315
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:161
int mb_stride
Definition: h264dec.h:435
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:104
int postpone_filter
Definition: h264dec.h:372
#define IS_INTERLACED(a)
Definition: mpegutils.h:85
AVCodecContext * avctx
Definition: h264dec.h:339
uint8_t zigzag_scan8x8_q0[64]
Definition: h264dec.h:427
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:391
H264_SEI_FpaType frame_packing_arrangement_type
Definition: h264_sei.h:124
5: top field, bottom field, top field repeated, in that order
Definition: h264_sei.h:49
Libavcodec external API header.
#define MAX_DELAYED_PIC_COUNT
Definition: h264dec.h:56
Views are on top of each other.
Definition: stereo3d.h:79
int last_qscale_diff
Definition: h264dec.h:190
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
AVBufferRef * pps_list[MAX_PPS_COUNT]
Definition: h264_ps.h:140
enum AVCodecID codec_id
Definition: avcodec.h:1778
static int get_ue_golomb_31(GetBitContext *gb)
read unsigned exp golomb code, constraint to a max of 31.
Definition: golomb.h:102
int crop_left
Definition: h264dec.h:379
int delta_poc_bottom
Definition: h264_parse.h:46
ERPicture next_pic
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
H264Picture * short_ref[32]
Definition: h264dec.h:462
int next_outputed_poc
Definition: h264dec.h:467
int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cabac.c:1914
int explicit_ref_marking
Definition: h264dec.h:475
#define AV_CODEC_FLAG2_FAST
Allow non spec compliant speedup tricks.
Definition: avcodec.h:944
int field_poc[2]
top/bottom POC
Definition: h264dec.h:147
int debug
debug
Definition: avcodec.h:3003
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264dec.h:510
main external API structure.
Definition: avcodec.h:1761
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264dec.h:189
int explicit_ref_marking
Definition: h264dec.h:324
uint8_t * data
The data buffer.
Definition: buffer.h:89
#define fp
Definition: regdef.h:44
uint8_t * data
Definition: frame.h:165
static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl, const H2645NAL *nal)
Definition: h264_slice.c:1677
H264SEIA53Caption a53_caption
Definition: h264_sei.h:157
void * buf
Definition: avisynth_c.h:690
int implicit_weight[48][48][2]
Definition: h264_parse.h:40
size_t crop_right
Definition: frame.h:562
int8_t * qscale_table
Definition: h264dec.h:133
static const uint8_t scan8[16 *3+3]
Definition: h264dec.h:643
#define CABAC(h)
Definition: h264_cabac.c:28
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
AVBuffer * buffer
Definition: buffer.h:82
static const uint8_t field_scan8x8_cavlc[64+1]
Definition: h264_slice.c:77
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:314
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:383
AVCodecContext * owner[2]
Definition: thread.h:37
int coded_height
Definition: avcodec.h:1963
Switching Predicted.
Definition: avutil.h:279
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264_parse.h:53
#define FF_CODEC_PROPERTY_CLOSED_CAPTIONS
Definition: avcodec.h:3583
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:674
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264dec.h:294
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:275
#define FRAME_MBAFF(h)
Definition: h264dec.h:73
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2491
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2484
#define LBOT
Definition: h264dec.h:77
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:213
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264dec.h:659
int8_t * ref_index[2]
Definition: h264dec.h:145
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:67
A reference counted buffer type.
int pixel_shift
0 for 8-bit H.264, 1 for high-bit-depth H.264
Definition: h264dec.h:356
int mmco_reset
MMCO_RESET set this 1.
Definition: h264dec.h:150
int content_interpretation_type
Definition: h264_sei.h:126
H264Picture * cur_pic_ptr
Definition: h264dec.h:346
#define LIST_NOT_USED
Definition: h264dec.h:389
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
ptrdiff_t mb_uvlinesize
Definition: h264dec.h:228
static int h264_slice_header_init(H264Context *h)
Definition: h264_slice.c:912
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264dec.h:242
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
int enable_er
Definition: h264dec.h:544
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:380
#define IS_INTER(a)
Definition: mpegutils.h:81
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: avcodec.h:2983
const SPS * sps
Definition: h264_ps.h:146
unsigned int sps_id
Definition: h264_ps.h:110
#define TRANSPOSE(x)
H264SEIPictureTiming picture_timing
Definition: h264_sei.h:155
int width_from_caller
Definition: h264dec.h:541
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264_ps.h:52
H264SEIRecoveryPoint recovery_point
Definition: h264_sei.h:159
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264dec.h:227
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer. ...
Definition: pixfmt.h:152
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264dec.h:537
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
3: top field, bottom field, in that order
Definition: h264_sei.h:47
static int alloc_picture(H264Context *h, H264Picture *pic)
Definition: h264_slice.c:188
ptrdiff_t linesize
Definition: h264dec.h:226
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264dec.h:396
uint32_t time_scale
Definition: h264_ps.h:82
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:392
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:400
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264_ps.h:124
ptrdiff_t uvlinesize
Definition: h264dec.h:226
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:384
static int h264_slice_init(H264Context *h, H264SliceContext *sl, const H2645NAL *nal)
Definition: h264_slice.c:1894
int pic_struct_present_flag
Definition: h264_ps.h:92
#define CHROMA444(h)
Definition: h264dec.h:99
unsigned int list_count
Definition: h264dec.h:268
uint8_t zigzag_scan[16]
Definition: h264dec.h:420
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:390
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264_parse.h:50
static void release_unused_pictures(H264Context *h, int remove_current)
Definition: h264_slice.c:116
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264dec.c:180
#define AV_ZERO128(d)
Definition: intreadwrite.h:627
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:331
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:513
#define CONFIG_ERROR_RESILIENCE
Definition: config.h:555
int left_type[LEFT_MBS]
Definition: h264dec.h:216
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
hardware decoding through VDA
Definition: pixfmt.h:183
int nb_slice_ctx_queued
Definition: h264dec.h:352
discard all non reference
Definition: avcodec.h:826
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
Definition: h264_picture.c:149
AVBufferPool * qscale_table_pool
Definition: h264dec.h:548
H264Picture * next_output_pic
Definition: h264dec.h:466
volatile int error_count
int mb_height
Definition: h264_ps.h:61
AVBufferPool * motion_val_pool
Definition: h264dec.h:550
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
int delta_poc_bottom
Definition: h264dec.h:328
#define IS_8x8DCT(a)
Definition: h264dec.h:104
common internal api header.
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:238
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
#define AV_COPY128(d, s)
Definition: intreadwrite.h:599
static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
Definition: h264_slice.c:756
AVBufferRef * pps_ref
Definition: h264_ps.h:142
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264_ps.h:50
int missing_fields
Definition: h264dec.h:527
static double c[64]
const char * av_color_transfer_name(enum AVColorTransferCharacteristic transfer)
Definition: pixdesc.c:2784
H264ParamSets ps
Definition: h264dec.h:455
H264SEIFramePacking frame_packing
Definition: h264_sei.h:161
H.264 / AVC / MPEG-4 part10 motion vector prediction.
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
Bi-dir predicted.
Definition: avutil.h:276
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
Stereoscopic video.
Views are packed per column.
Definition: stereo3d.h:141
int cur_chroma_format_idc
Definition: h264dec.h:535
int8_t * intra4x4_pred_mode
Definition: h264dec.h:206
unsigned properties
Properties of the stream that gets decoded.
Definition: avcodec.h:3581
enum AVDiscard skip_loop_filter
Skip loop filtering for selected frames.
Definition: avcodec.h:3372
int den
Denominator.
Definition: rational.h:60
static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
Definition: h264_slice.c:2469
int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cavlc.c:702
GetBitContext gb
Definition: h2645_parse.h:47
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264_ps.h:98
#define IS_INTRA(x, y)
int present
Definition: h264_sei.h:91
int delta_poc[2]
Definition: h264_parse.h:47
void ff_h264_free_tables(H264Context *h)
Definition: h264dec.c:137
void * priv_data
Definition: avcodec.h:1803
#define LTOP
Definition: h264dec.h:76
#define PICT_FRAME
Definition: mpegutils.h:39
static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple)
Definition: h264_slice.c:556
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264dec.h:428
int8_t ref_cache[2][5 *8]
Definition: h264dec.h:300
#define AV_CODEC_FLAG_OUTPUT_CORRUPT
Output even those frames that might be corrupted.
Definition: avcodec.h:884
unsigned int pps_id
Definition: h264dec.h:278
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:353
int frame_priv_data_size
Size of per-frame hardware accelerator private data.
Definition: avcodec.h:3964
#define CHROMA422(h)
Definition: h264dec.h:98
#define FF_BUG_TRUNCATED
Definition: avcodec.h:2966
H264Picture cur_pic
Definition: h264dec.h:347
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
#define AV_ZERO32(d)
Definition: intreadwrite.h:619
int mb_width
Definition: h264dec.h:434
static int find_unused_picture(H264Context *h)
Definition: h264_slice.c:253
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264dec.h:487
int ff_h264_execute_ref_pic_marking(H264Context *h)
Execute the reference picture marking (memory management control operations).
Definition: h264_refs.c:610
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:465
int ff_h264_pred_weight_table(GetBitContext *gb, const SPS *sps, const int *ref_count, int slice_type_nos, H264PredWeightTable *pwt, int picture_structure, void *logctx)
Definition: h264_parse.c:27
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264_ps.h:59
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:1863
uint32_t * mb2b_xy
Definition: h264dec.h:398
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264dec.h:269
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264dec.h:431
#define HAVE_THREADS
Definition: config.h:385
int cur_bit_depth_luma
Definition: h264dec.h:536
int crop_top
Definition: h264dec.h:381
AVBufferRef * ref_index_buf[2]
Definition: h264dec.h:144
av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp.c:67
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2554
H264DSPContext h264dsp
Definition: h264dec.h:341
void ff_er_frame_start(ERContext *s)
int height
Definition: frame.h:259
#define AV_CODEC_FLAG2_SHOW_ALL
Show all frames before the first keyframe.
Definition: avcodec.h:972
FILE * out
Definition: movenc.c:54
uint8_t(*[2] mvd_table)[2]
Definition: h264dec.h:313
uint8_t field_scan8x8[64]
Definition: h264dec.h:424
int slice_type_fixed
Definition: h264dec.h:185
static av_always_inline void fill_filter_caches_inter(const H264Context *h, H264SliceContext *sl, int mb_type, int top_xy, int left_xy[LEFT_MBS], int top_type, int left_type[LEFT_MBS], int mb_xy, int list)
Definition: h264_slice.c:2173
#define av_freep(p)
void INT64 INT64 count
Definition: avisynth_c.h:690
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:450
int prev_frame_num_offset
for POC type 2
Definition: h264_parse.h:52
#define av_always_inline
Definition: attributes.h:39
HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView p...
Definition: pixfmt.h:247
int slice_beta_offset
Definition: h264dec.h:195
int8_t * intra4x4_pred_mode
Definition: h264dec.h:384
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:334
#define ER_AC_END
static int decode_slice(struct AVCodecContext *avctx, void *arg)
Definition: h264_slice.c:2527
int delta_poc[2]
Definition: h264dec.h:329
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:62
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2335
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264dec.c:238
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:107
uint8_t field_scan_q0[16]
Definition: h264dec.h:429
int mb_field_decoding_flag
Definition: h264dec.h:241
uint8_t(* non_zero_count)[48]
Definition: h264dec.h:387
static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
Definition: h264_slice.c:2399
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
Definition: avcodec.h:3232
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264_ps.h:71
exp golomb vlc stuff
uint8_t * bipred_scratchpad
Definition: h264dec.h:283
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:46
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
Definition: h264qpel.c:49
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1397
int droppable
Definition: h264dec.h:362
int level_idc
Definition: h264_ps.h:47
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2981
int crop_right
Definition: h264dec.h:380
void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
int nal_ref_idc
Definition: h264dec.h:441
GetBitContext gb
Definition: h264dec.h:179
uint8_t field_scan[16]
Definition: h264dec.h:423
int cabac_init_idc
Definition: h264dec.h:320
#define FRAME_RECOVERED_IDR
We have seen an IDR, so all the following frames in coded order are correctly decodable.
Definition: h264dec.h:516
for(j=16;j >0;--j)
6: bottom field, top field, bottom field repeated, in that order
Definition: h264_sei.h:50
#define FFMAX3(a, b, c)
Definition: common.h:95
int b_stride
Definition: h264dec.h:400
Predicted.
Definition: avutil.h:275
#define tb
Definition: regdef.h:68
Context Adaptive Binary Arithmetic Coder.
#define H264_MAX_PICTURE_COUNT
Definition: h264dec.h:52
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1263
int short_ref_count
number of actual short term references
Definition: h264dec.h:478
static uint8_t tmp[11]
Definition: aes_ctr.c:26
enum AVColorSpace colorspace
Definition: h264_ps.h:79