FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
h264_slice.c
Go to the documentation of this file.
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 
139  av_fast_mallocz(&sl->top_borders[0], &sl->top_borders_allocated[0],
140  h->mb_width * 16 * 3 * sizeof(uint8_t) * 2);
141  av_fast_mallocz(&sl->top_borders[1], &sl->top_borders_allocated[1],
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]) {
146  av_freep(&sl->bipred_scratchpad);
147  av_freep(&sl->edge_emu_buffer);
148  av_freep(&sl->top_borders[0]);
149  av_freep(&sl->top_borders[1]);
150 
151  sl->bipred_scratchpad_allocated = 0;
152  sl->edge_emu_buffer_allocated = 0;
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 
161 static int init_table_pools(H264Context *h)
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,
169  av_buffer_allocz);
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) {
178  av_buffer_pool_uninit(&h->qscale_table_pool);
179  av_buffer_pool_uninit(&h->mb_type_pool);
180  av_buffer_pool_uninit(&h->motion_val_pool);
181  av_buffer_pool_uninit(&h->ref_index_pool);
182  return AVERROR(ENOMEM);
183  }
184 
185  return 0;
186 }
187 
188 static int alloc_picture(H264Context *h, H264Picture *pic)
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 ?
196  AV_GET_BUFFER_FLAG_REF : 0);
197  if (ret < 0)
198  goto fail;
199 
200  if (h->avctx->hwaccel) {
201  const AVHWAccel *hwaccel = h->avctx->hwaccel;
202  av_assert0(!pic->hwaccel_picture_private);
203  if (hwaccel->frame_priv_data_size) {
204  pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->frame_priv_data_size);
205  if (!pic->hwaccel_priv_buf)
206  return AVERROR(ENOMEM);
207  pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
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;
212  av_pix_fmt_get_chroma_sub_sample(pic->f->format,
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 
229  pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
230  pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
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++) {
238  pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
239  pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
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 
253 static int find_unused_picture(H264Context *h)
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 
272 static void copy_picture_range(H264Picture **to, H264Picture **from, int count,
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 
286 static int h264_slice_header_init(H264Context *h);
287 
288 int ff_h264_update_thread_context(AVCodecContext *dst,
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  // We can't fail if SPS isn't set at it breaks current skip_frame code
300  //if (!h1->ps.sps)
301  // return AVERROR_INVALIDDATA;
302 
303  if (inited &&
304  (h->width != h1->width ||
305  h->height != h1->height ||
306  h->mb_width != h1->mb_width ||
307  h->mb_height != h1->mb_height ||
308  !h->ps.sps ||
309  h->ps.sps->bit_depth_luma != h1->ps.sps->bit_depth_luma ||
310  h->ps.sps->chroma_format_idc != h1->ps.sps->chroma_format_idc ||
311  h->ps.sps->colorspace != h1->ps.sps->colorspace)) {
312  need_reinit = 1;
313  }
314 
315  /* copy block_offset since frame_start may not be called */
316  memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
317 
318  // SPS/PPS
319  for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++) {
320  av_buffer_unref(&h->ps.sps_list[i]);
321  if (h1->ps.sps_list[i]) {
322  h->ps.sps_list[i] = av_buffer_ref(h1->ps.sps_list[i]);
323  if (!h->ps.sps_list[i])
324  return AVERROR(ENOMEM);
325  }
326  }
327  for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++) {
328  av_buffer_unref(&h->ps.pps_list[i]);
329  if (h1->ps.pps_list[i]) {
330  h->ps.pps_list[i] = av_buffer_ref(h1->ps.pps_list[i]);
331  if (!h->ps.pps_list[i])
332  return AVERROR(ENOMEM);
333  }
334  }
335 
336  av_buffer_unref(&h->ps.pps_ref);
337  av_buffer_unref(&h->ps.sps_ref);
338  h->ps.pps = NULL;
339  h->ps.sps = NULL;
340  if (h1->ps.pps_ref) {
341  h->ps.pps_ref = av_buffer_ref(h1->ps.pps_ref);
342  if (!h->ps.pps_ref)
343  return AVERROR(ENOMEM);
344  h->ps.pps = (const PPS*)h->ps.pps_ref->data;
345  }
346  if (h1->ps.sps_ref) {
347  h->ps.sps_ref = av_buffer_ref(h1->ps.sps_ref);
348  if (!h->ps.sps_ref)
349  return AVERROR(ENOMEM);
350  h->ps.sps = (const SPS*)h->ps.sps_ref->data;
351  }
352 
353  if (need_reinit || !inited) {
354  h->width = h1->width;
355  h->height = h1->height;
356  h->mb_height = h1->mb_height;
357  h->mb_width = h1->mb_width;
358  h->mb_num = h1->mb_num;
359  h->mb_stride = h1->mb_stride;
360  h->b_stride = h1->b_stride;
361 
362  if (h->context_initialized || h1->context_initialized) {
363  if ((err = h264_slice_header_init(h)) < 0) {
364  av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
365  return err;
366  }
367  }
368 
369  /* copy block_offset since frame_start may not be called */
370  memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
371  }
372 
373  h->avctx->coded_height = h1->avctx->coded_height;
374  h->avctx->coded_width = h1->avctx->coded_width;
375  h->avctx->width = h1->avctx->width;
376  h->avctx->height = h1->avctx->height;
377  h->width_from_caller = h1->width_from_caller;
378  h->height_from_caller = h1->height_from_caller;
379  h->coded_picture_number = h1->coded_picture_number;
380  h->first_field = h1->first_field;
381  h->picture_structure = h1->picture_structure;
382  h->mb_aff_frame = h1->mb_aff_frame;
383  h->droppable = h1->droppable;
384 
385  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
386  ff_h264_unref_picture(h, &h->DPB[i]);
387  if (h1->DPB[i].f->buf[0] &&
388  (ret = ff_h264_ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
389  return ret;
390  }
391 
392  h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
393  ff_h264_unref_picture(h, &h->cur_pic);
394  if (h1->cur_pic.f->buf[0]) {
395  ret = ff_h264_ref_picture(h, &h->cur_pic, &h1->cur_pic);
396  if (ret < 0)
397  return ret;
398  }
399 
400  h->enable_er = h1->enable_er;
401  h->workaround_bugs = h1->workaround_bugs;
402  h->x264_build = h1->x264_build;
403  h->droppable = h1->droppable;
404 
405  // extradata/NAL handling
406  h->is_avc = h1->is_avc;
407  h->nal_length_size = h1->nal_length_size;
408 
409  memcpy(&h->poc, &h1->poc, sizeof(h->poc));
410 
411  memcpy(h->short_ref, h1->short_ref, sizeof(h->short_ref));
412  memcpy(h->long_ref, h1->long_ref, sizeof(h->long_ref));
413  memcpy(h->delayed_pic, h1->delayed_pic, sizeof(h->delayed_pic));
414  memcpy(h->last_pocs, h1->last_pocs, sizeof(h->last_pocs));
415 
416  h->next_output_pic = h1->next_output_pic;
417  h->next_outputed_poc = h1->next_outputed_poc;
418 
419  memcpy(h->mmco, h1->mmco, sizeof(h->mmco));
420  h->nb_mmco = h1->nb_mmco;
421  h->mmco_reset = h1->mmco_reset;
422  h->explicit_ref_marking = h1->explicit_ref_marking;
423  h->long_ref_count = h1->long_ref_count;
424  h->short_ref_count = h1->short_ref_count;
425 
426  copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
427  copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
428  copy_picture_range(h->delayed_pic, h1->delayed_pic,
429  MAX_DELAYED_PIC_COUNT + 2, h, h1);
430 
431  h->frame_recovered = h1->frame_recovered;
432 
433  av_buffer_unref(&h->sei.a53_caption.buf_ref);
434  if (h1->sei.a53_caption.buf_ref) {
435  h->sei.a53_caption.buf_ref = av_buffer_ref(h1->sei.a53_caption.buf_ref);
436  if (!h->sei.a53_caption.buf_ref)
437  return AVERROR(ENOMEM);
438  }
439 
440  if (!h->cur_pic_ptr)
441  return 0;
442 
443  if (!h->droppable) {
444  err = ff_h264_execute_ref_pic_marking(h);
445  h->poc.prev_poc_msb = h->poc.poc_msb;
446  h->poc.prev_poc_lsb = h->poc.poc_lsb;
447  }
448  h->poc.prev_frame_num_offset = h->poc.frame_num_offset;
449  h->poc.prev_frame_num = h->poc.frame_num;
450 
451  h->recovery_frame = h1->recovery_frame;
452 
453  return err;
454 }
455 
456 static int h264_frame_start(H264Context *h)
457 {
458  H264Picture *pic;
459  int i, ret;
460  const int pixel_shift = h->pixel_shift;
461  int c[4] = {
462  1<<(h->ps.sps->bit_depth_luma-1),
463  1<<(h->ps.sps->bit_depth_chroma-1),
464  1<<(h->ps.sps->bit_depth_chroma-1),
465  -1
466  };
467 
468  if (!ff_thread_can_start_frame(h->avctx)) {
469  av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
470  return -1;
471  }
472 
473  release_unused_pictures(h, 1);
474  h->cur_pic_ptr = NULL;
475 
476  i = find_unused_picture(h);
477  if (i < 0) {
478  av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
479  return i;
480  }
481  pic = &h->DPB[i];
482 
483  pic->reference = h->droppable ? 0 : h->picture_structure;
484  pic->f->coded_picture_number = h->coded_picture_number++;
485  pic->field_picture = h->picture_structure != PICT_FRAME;
486  pic->frame_num = h->poc.frame_num;
487  /*
488  * Zero key_frame here; IDR markings per slice in frame or fields are ORed
489  * in later.
490  * See decode_nal_units().
491  */
492  pic->f->key_frame = 0;
493  pic->mmco_reset = 0;
494  pic->recovered = 0;
495  pic->invalid_gap = 0;
496  pic->sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
497 
498  pic->f->pict_type = h->slice_ctx[0].slice_type;
499 
500  pic->f->crop_left = h->crop_left;
501  pic->f->crop_right = h->crop_right;
502  pic->f->crop_top = h->crop_top;
503  pic->f->crop_bottom = h->crop_bottom;
504 
505  if ((ret = alloc_picture(h, pic)) < 0)
506  return ret;
507  if(!h->frame_recovered && !h->avctx->hwaccel)
508  ff_color_frame(pic->f, c);
509 
510  h->cur_pic_ptr = pic;
511  ff_h264_unref_picture(h, &h->cur_pic);
512  if (CONFIG_ERROR_RESILIENCE) {
513  ff_h264_set_erpic(&h->slice_ctx[0].er.cur_pic, NULL);
514  }
515 
516  if ((ret = ff_h264_ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
517  return ret;
518 
519  for (i = 0; i < h->nb_slice_ctx; i++) {
520  h->slice_ctx[i].linesize = h->cur_pic_ptr->f->linesize[0];
521  h->slice_ctx[i].uvlinesize = h->cur_pic_ptr->f->linesize[1];
522  }
523 
524  if (CONFIG_ERROR_RESILIENCE && h->enable_er) {
525  ff_er_frame_start(&h->slice_ctx[0].er);
526  ff_h264_set_erpic(&h->slice_ctx[0].er.last_pic, NULL);
527  ff_h264_set_erpic(&h->slice_ctx[0].er.next_pic, NULL);
528  }
529 
530  for (i = 0; i < 16; i++) {
531  h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
532  h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
533  }
534  for (i = 0; i < 16; i++) {
535  h->block_offset[16 + i] =
536  h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
537  h->block_offset[48 + 16 + i] =
538  h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
539  }
540 
541  /* We mark the current picture as non-reference after allocating it, so
542  * that if we break out due to an error it can be released automatically
543  * in the next ff_mpv_frame_start().
544  */
545  h->cur_pic_ptr->reference = 0;
546 
547  h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
548 
549  h->next_output_pic = NULL;
550 
551  h->postpone_filter = 0;
552 
553  h->mb_aff_frame = h->ps.sps->mb_aff && (h->picture_structure == PICT_FRAME);
554 
555  if (h->sei.unregistered.x264_build >= 0)
556  h->x264_build = h->sei.unregistered.x264_build;
557 
558  assert(h->cur_pic_ptr->long_ref == 0);
559 
560  return 0;
561 }
562 
563 static av_always_inline void backup_mb_border(const H264Context *h, H264SliceContext *sl,
564  uint8_t *src_y,
565  uint8_t *src_cb, uint8_t *src_cr,
566  int linesize, int uvlinesize,
567  int simple)
568 {
569  uint8_t *top_border;
570  int top_idx = 1;
571  const int pixel_shift = h->pixel_shift;
572  int chroma444 = CHROMA444(h);
573  int chroma422 = CHROMA422(h);
574 
575  src_y -= linesize;
576  src_cb -= uvlinesize;
577  src_cr -= uvlinesize;
578 
579  if (!simple && FRAME_MBAFF(h)) {
580  if (sl->mb_y & 1) {
581  if (!MB_MBAFF(sl)) {
582  top_border = sl->top_borders[0][sl->mb_x];
583  AV_COPY128(top_border, src_y + 15 * linesize);
584  if (pixel_shift)
585  AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
586  if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
587  if (chroma444) {
588  if (pixel_shift) {
589  AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
590  AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
591  AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
592  AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
593  } else {
594  AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
595  AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
596  }
597  } else if (chroma422) {
598  if (pixel_shift) {
599  AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
600  AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
601  } else {
602  AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
603  AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
604  }
605  } else {
606  if (pixel_shift) {
607  AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
608  AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
609  } else {
610  AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
611  AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
612  }
613  }
614  }
615  }
616  } else if (MB_MBAFF(sl)) {
617  top_idx = 0;
618  } else
619  return;
620  }
621 
622  top_border = sl->top_borders[top_idx][sl->mb_x];
623  /* There are two lines saved, the line above the top macroblock
624  * of a pair, and the line above the bottom macroblock. */
625  AV_COPY128(top_border, src_y + 16 * linesize);
626  if (pixel_shift)
627  AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
628 
629  if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
630  if (chroma444) {
631  if (pixel_shift) {
632  AV_COPY128(top_border + 32, src_cb + 16 * linesize);
633  AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
634  AV_COPY128(top_border + 64, src_cr + 16 * linesize);
635  AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
636  } else {
637  AV_COPY128(top_border + 16, src_cb + 16 * linesize);
638  AV_COPY128(top_border + 32, src_cr + 16 * linesize);
639  }
640  } else if (chroma422) {
641  if (pixel_shift) {
642  AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
643  AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
644  } else {
645  AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
646  AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
647  }
648  } else {
649  if (pixel_shift) {
650  AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
651  AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
652  } else {
653  AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
654  AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
655  }
656  }
657  }
658 }
659 
660 /**
661  * Initialize implicit_weight table.
662  * @param field 0/1 initialize the weight for interlaced MBAFF
663  * -1 initializes the rest
664  */
665 static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
666 {
667  int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
668 
669  for (i = 0; i < 2; i++) {
670  sl->pwt.luma_weight_flag[i] = 0;
671  sl->pwt.chroma_weight_flag[i] = 0;
672  }
673 
674  if (field < 0) {
675  if (h->picture_structure == PICT_FRAME) {
676  cur_poc = h->cur_pic_ptr->poc;
677  } else {
678  cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
679  }
680  if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
681  sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2 * cur_poc) {
682  sl->pwt.use_weight = 0;
683  sl->pwt.use_weight_chroma = 0;
684  return;
685  }
686  ref_start = 0;
687  ref_count0 = sl->ref_count[0];
688  ref_count1 = sl->ref_count[1];
689  } else {
690  cur_poc = h->cur_pic_ptr->field_poc[field];
691  ref_start = 16;
692  ref_count0 = 16 + 2 * sl->ref_count[0];
693  ref_count1 = 16 + 2 * sl->ref_count[1];
694  }
695 
696  sl->pwt.use_weight = 2;
697  sl->pwt.use_weight_chroma = 2;
698  sl->pwt.luma_log2_weight_denom = 5;
699  sl->pwt.chroma_log2_weight_denom = 5;
700 
701  for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
702  int64_t poc0 = sl->ref_list[0][ref0].poc;
703  for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
704  int w = 32;
705  if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) {
706  int poc1 = sl->ref_list[1][ref1].poc;
707  int td = av_clip_int8(poc1 - poc0);
708  if (td) {
709  int tb = av_clip_int8(cur_poc - poc0);
710  int tx = (16384 + (FFABS(td) >> 1)) / td;
711  int dist_scale_factor = (tb * tx + 32) >> 8;
712  if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
713  w = 64 - dist_scale_factor;
714  }
715  }
716  if (field < 0) {
717  sl->pwt.implicit_weight[ref0][ref1][0] =
718  sl->pwt.implicit_weight[ref0][ref1][1] = w;
719  } else {
720  sl->pwt.implicit_weight[ref0][ref1][field] = w;
721  }
722  }
723  }
724 }
725 
726 /**
727  * initialize scan tables
728  */
729 static void init_scan_tables(H264Context *h)
730 {
731  int i;
732  for (i = 0; i < 16; i++) {
733 #define TRANSPOSE(x) ((x) >> 2) | (((x) << 2) & 0xF)
734  h->zigzag_scan[i] = TRANSPOSE(ff_zigzag_scan[i]);
735  h->field_scan[i] = TRANSPOSE(field_scan[i]);
736 #undef TRANSPOSE
737  }
738  for (i = 0; i < 64; i++) {
739 #define TRANSPOSE(x) ((x) >> 3) | (((x) & 7) << 3)
740  h->zigzag_scan8x8[i] = TRANSPOSE(ff_zigzag_direct[i]);
741  h->zigzag_scan8x8_cavlc[i] = TRANSPOSE(zigzag_scan8x8_cavlc[i]);
742  h->field_scan8x8[i] = TRANSPOSE(field_scan8x8[i]);
743  h->field_scan8x8_cavlc[i] = TRANSPOSE(field_scan8x8_cavlc[i]);
744 #undef TRANSPOSE
745  }
746  if (h->ps.sps->transform_bypass) { // FIXME same ugly
747  memcpy(h->zigzag_scan_q0 , ff_zigzag_scan , sizeof(h->zigzag_scan_q0 ));
748  memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
749  memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
750  memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
751  memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
752  memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
753  } else {
754  memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
755  memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
756  memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
757  memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
758  memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
759  memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
760  }
761 }
762 
763 static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
764 {
765 #define HWACCEL_MAX (CONFIG_H264_DXVA2_HWACCEL + \
766  (CONFIG_H264_D3D11VA_HWACCEL * 2) + \
767  CONFIG_H264_NVDEC_HWACCEL + \
768  CONFIG_H264_VAAPI_HWACCEL + \
769  CONFIG_H264_VIDEOTOOLBOX_HWACCEL + \
770  CONFIG_H264_VDPAU_HWACCEL)
771  enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts;
772  const enum AVPixelFormat *choices = pix_fmts;
773  int i;
774 
775  switch (h->ps.sps->bit_depth_luma) {
776  case 9:
777  if (CHROMA444(h)) {
778  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
779  *fmt++ = AV_PIX_FMT_GBRP9;
780  } else
781  *fmt++ = AV_PIX_FMT_YUV444P9;
782  } else if (CHROMA422(h))
783  *fmt++ = AV_PIX_FMT_YUV422P9;
784  else
785  *fmt++ = AV_PIX_FMT_YUV420P9;
786  break;
787  case 10:
788  if (CHROMA444(h)) {
789  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
790  *fmt++ = AV_PIX_FMT_GBRP10;
791  } else
792  *fmt++ = AV_PIX_FMT_YUV444P10;
793  } else if (CHROMA422(h))
794  *fmt++ = AV_PIX_FMT_YUV422P10;
795  else
796  *fmt++ = AV_PIX_FMT_YUV420P10;
797  break;
798  case 12:
799  if (CHROMA444(h)) {
800  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
801  *fmt++ = AV_PIX_FMT_GBRP12;
802  } else
803  *fmt++ = AV_PIX_FMT_YUV444P12;
804  } else if (CHROMA422(h))
805  *fmt++ = AV_PIX_FMT_YUV422P12;
806  else
807  *fmt++ = AV_PIX_FMT_YUV420P12;
808  break;
809  case 14:
810  if (CHROMA444(h)) {
811  if (h->avctx->colorspace == AVCOL_SPC_RGB) {
812  *fmt++ = AV_PIX_FMT_GBRP14;
813  } else
814  *fmt++ = AV_PIX_FMT_YUV444P14;
815  } else if (CHROMA422(h))
816  *fmt++ = AV_PIX_FMT_YUV422P14;
817  else
818  *fmt++ = AV_PIX_FMT_YUV420P14;
819  break;
820  case 8:
821 #if CONFIG_H264_VDPAU_HWACCEL
822  *fmt++ = AV_PIX_FMT_VDPAU;
823 #endif
824 #if CONFIG_H264_NVDEC_HWACCEL
825  *fmt++ = AV_PIX_FMT_CUDA;
826 #endif
827  if (CHROMA444(h)) {
828  if (h->avctx->colorspace == AVCOL_SPC_RGB)
829  *fmt++ = AV_PIX_FMT_GBRP;
830  else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
831  *fmt++ = AV_PIX_FMT_YUVJ444P;
832  else
833  *fmt++ = AV_PIX_FMT_YUV444P;
834  } else if (CHROMA422(h)) {
835  if (h->avctx->color_range == AVCOL_RANGE_JPEG)
836  *fmt++ = AV_PIX_FMT_YUVJ422P;
837  else
838  *fmt++ = AV_PIX_FMT_YUV422P;
839  } else {
840 #if CONFIG_H264_DXVA2_HWACCEL
841  *fmt++ = AV_PIX_FMT_DXVA2_VLD;
842 #endif
843 #if CONFIG_H264_D3D11VA_HWACCEL
844  *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
845  *fmt++ = AV_PIX_FMT_D3D11;
846 #endif
847 #if CONFIG_H264_VAAPI_HWACCEL
848  *fmt++ = AV_PIX_FMT_VAAPI;
849 #endif
850 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
851  *fmt++ = AV_PIX_FMT_VIDEOTOOLBOX;
852 #endif
853  if (h->avctx->codec->pix_fmts)
854  choices = h->avctx->codec->pix_fmts;
855  else if (h->avctx->color_range == AVCOL_RANGE_JPEG)
856  *fmt++ = AV_PIX_FMT_YUVJ420P;
857  else
858  *fmt++ = AV_PIX_FMT_YUV420P;
859  }
860  break;
861  default:
862  av_log(h->avctx, AV_LOG_ERROR,
863  "Unsupported bit depth %d\n", h->ps.sps->bit_depth_luma);
864  return AVERROR_INVALIDDATA;
865  }
866 
867  *fmt = AV_PIX_FMT_NONE;
868 
869  for (i=0; choices[i] != AV_PIX_FMT_NONE; i++)
870  if (choices[i] == h->avctx->pix_fmt && !force_callback)
871  return choices[i];
872  return ff_thread_get_format(h->avctx, choices);
873 }
874 
875 /* export coded and cropped frame dimensions to AVCodecContext */
876 static int init_dimensions(H264Context *h)
877 {
878  const SPS *sps = (const SPS*)h->ps.sps;
879  int cr = sps->crop_right;
880  int cl = sps->crop_left;
881  int ct = sps->crop_top;
882  int cb = sps->crop_bottom;
883  int width = h->width - (cr + cl);
884  int height = h->height - (ct + cb);
885  av_assert0(sps->crop_right + sps->crop_left < (unsigned)h->width);
886  av_assert0(sps->crop_top + sps->crop_bottom < (unsigned)h->height);
887 
888  /* handle container cropping */
889  if (h->width_from_caller > 0 && h->height_from_caller > 0 &&
890  !sps->crop_top && !sps->crop_left &&
891  FFALIGN(h->width_from_caller, 16) == FFALIGN(width, 16) &&
892  FFALIGN(h->height_from_caller, 16) == FFALIGN(height, 16) &&
893  h->width_from_caller <= width &&
894  h->height_from_caller <= height) {
895  width = h->width_from_caller;
896  height = h->height_from_caller;
897  cl = 0;
898  ct = 0;
899  cr = h->width - width;
900  cb = h->height - height;
901  } else {
902  h->width_from_caller = 0;
903  h->height_from_caller = 0;
904  }
905 
906  h->avctx->coded_width = h->width;
907  h->avctx->coded_height = h->height;
908  h->avctx->width = width;
909  h->avctx->height = height;
910  h->crop_right = cr;
911  h->crop_left = cl;
912  h->crop_top = ct;
913  h->crop_bottom = cb;
914 
915  return 0;
916 }
917 
918 static int h264_slice_header_init(H264Context *h)
919 {
920  const SPS *sps = h->ps.sps;
921  int i, ret;
922 
923  ff_set_sar(h->avctx, sps->sar);
924  av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
925  &h->chroma_x_shift, &h->chroma_y_shift);
926 
927  if (sps->timing_info_present_flag) {
928  int64_t den = sps->time_scale;
929  if (h->x264_build < 44U)
930  den *= 2;
931  av_reduce(&h->avctx->framerate.den, &h->avctx->framerate.num,
932  sps->num_units_in_tick * h->avctx->ticks_per_frame, den, 1 << 30);
933  }
934 
935  ff_h264_free_tables(h);
936 
937  h->first_field = 0;
938  h->prev_interlaced_frame = 1;
939 
940  init_scan_tables(h);
941  ret = ff_h264_alloc_tables(h);
942  if (ret < 0) {
943  av_log(h->avctx, AV_LOG_ERROR, "Could not allocate memory\n");
944  goto fail;
945  }
946 
947  if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
948  sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13
949  ) {
950  av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth %d\n",
951  sps->bit_depth_luma);
952  ret = AVERROR_INVALIDDATA;
953  goto fail;
954  }
955 
956  h->cur_bit_depth_luma =
957  h->avctx->bits_per_raw_sample = sps->bit_depth_luma;
958  h->cur_chroma_format_idc = sps->chroma_format_idc;
959  h->pixel_shift = sps->bit_depth_luma > 8;
960  h->chroma_format_idc = sps->chroma_format_idc;
961  h->bit_depth_luma = sps->bit_depth_luma;
962 
963  ff_h264dsp_init(&h->h264dsp, sps->bit_depth_luma,
964  sps->chroma_format_idc);
965  ff_h264chroma_init(&h->h264chroma, sps->bit_depth_chroma);
966  ff_h264qpel_init(&h->h264qpel, sps->bit_depth_luma);
967  ff_h264_pred_init(&h->hpc, h->avctx->codec_id, sps->bit_depth_luma,
968  sps->chroma_format_idc);
969  ff_videodsp_init(&h->vdsp, sps->bit_depth_luma);
970 
971  if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
972  ret = ff_h264_slice_context_init(h, &h->slice_ctx[0]);
973  if (ret < 0) {
974  av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
975  goto fail;
976  }
977  } else {
978  for (i = 0; i < h->nb_slice_ctx; i++) {
979  H264SliceContext *sl = &h->slice_ctx[i];
980 
981  sl->h264 = h;
982  sl->intra4x4_pred_mode = h->intra4x4_pred_mode + i * 8 * 2 * h->mb_stride;
983  sl->mvd_table[0] = h->mvd_table[0] + i * 8 * 2 * h->mb_stride;
984  sl->mvd_table[1] = h->mvd_table[1] + i * 8 * 2 * h->mb_stride;
985 
986  if ((ret = ff_h264_slice_context_init(h, sl)) < 0) {
987  av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
988  goto fail;
989  }
990  }
991  }
992 
993  h->context_initialized = 1;
994 
995  return 0;
996 fail:
997  ff_h264_free_tables(h);
998  h->context_initialized = 0;
999  return ret;
1000 }
1001 
1002 static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
1003 {
1004  switch (a) {
1005  case AV_PIX_FMT_YUVJ420P: return AV_PIX_FMT_YUV420P;
1006  case AV_PIX_FMT_YUVJ422P: return AV_PIX_FMT_YUV422P;
1007  case AV_PIX_FMT_YUVJ444P: return AV_PIX_FMT_YUV444P;
1008  default:
1009  return a;
1010  }
1011 }
1012 
1013 static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
1014 {
1015  const SPS *sps;
1016  int needs_reinit = 0, must_reinit, ret;
1017 
1018  if (first_slice) {
1019  av_buffer_unref(&h->ps.pps_ref);
1020  h->ps.pps = NULL;
1021  h->ps.pps_ref = av_buffer_ref(h->ps.pps_list[sl->pps_id]);
1022  if (!h->ps.pps_ref)
1023  return AVERROR(ENOMEM);
1024  h->ps.pps = (const PPS*)h->ps.pps_ref->data;
1025  }
1026 
1027  if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
1028  av_buffer_unref(&h->ps.sps_ref);
1029  h->ps.sps = NULL;
1030  h->ps.sps_ref = av_buffer_ref(h->ps.sps_list[h->ps.pps->sps_id]);
1031  if (!h->ps.sps_ref)
1032  return AVERROR(ENOMEM);
1033  h->ps.sps = (const SPS*)h->ps.sps_ref->data;
1034 
1035  if (h->mb_width != h->ps.sps->mb_width ||
1036  h->mb_height != h->ps.sps->mb_height ||
1037  h->cur_bit_depth_luma != h->ps.sps->bit_depth_luma ||
1038  h->cur_chroma_format_idc != h->ps.sps->chroma_format_idc
1039  )
1040  needs_reinit = 1;
1041 
1042  if (h->bit_depth_luma != h->ps.sps->bit_depth_luma ||
1043  h->chroma_format_idc != h->ps.sps->chroma_format_idc)
1044  needs_reinit = 1;
1045  }
1046  sps = h->ps.sps;
1047 
1048  must_reinit = (h->context_initialized &&
1049  ( 16*sps->mb_width != h->avctx->coded_width
1050  || 16*sps->mb_height != h->avctx->coded_height
1051  || h->cur_bit_depth_luma != sps->bit_depth_luma
1052  || h->cur_chroma_format_idc != sps->chroma_format_idc
1053  || h->mb_width != sps->mb_width
1054  || h->mb_height != sps->mb_height
1055  ));
1056  if (h->avctx->pix_fmt == AV_PIX_FMT_NONE
1057  || (non_j_pixfmt(h->avctx->pix_fmt) != non_j_pixfmt(get_pixel_format(h, 0))))
1058  must_reinit = 1;
1059 
1060  if (first_slice && av_cmp_q(sps->sar, h->avctx->sample_aspect_ratio))
1061  must_reinit = 1;
1062 
1063  if (!h->setup_finished) {
1064  h->avctx->profile = ff_h264_get_profile(sps);
1065  h->avctx->level = sps->level_idc;
1066  h->avctx->refs = sps->ref_frame_count;
1067 
1068  h->mb_width = sps->mb_width;
1069  h->mb_height = sps->mb_height;
1070  h->mb_num = h->mb_width * h->mb_height;
1071  h->mb_stride = h->mb_width + 1;
1072 
1073  h->b_stride = h->mb_width * 4;
1074 
1075  h->chroma_y_shift = sps->chroma_format_idc <= 1; // 400 uses yuv420p
1076 
1077  h->width = 16 * h->mb_width;
1078  h->height = 16 * h->mb_height;
1079 
1080  ret = init_dimensions(h);
1081  if (ret < 0)
1082  return ret;
1083 
1084  if (sps->video_signal_type_present_flag) {
1085  h->avctx->color_range = sps->full_range > 0 ? AVCOL_RANGE_JPEG
1086  : AVCOL_RANGE_MPEG;
1087  if (sps->colour_description_present_flag) {
1088  if (h->avctx->colorspace != sps->colorspace)
1089  needs_reinit = 1;
1090  h->avctx->color_primaries = sps->color_primaries;
1091  h->avctx->color_trc = sps->color_trc;
1092  h->avctx->colorspace = sps->colorspace;
1093  }
1094  }
1095  }
1096 
1097  if (!h->context_initialized || must_reinit || needs_reinit) {
1098  int flush_changes = h->context_initialized;
1099  h->context_initialized = 0;
1100  if (sl != h->slice_ctx) {
1101  av_log(h->avctx, AV_LOG_ERROR,
1102  "changing width %d -> %d / height %d -> %d on "
1103  "slice %d\n",
1104  h->width, h->avctx->coded_width,
1105  h->height, h->avctx->coded_height,
1106  h->current_slice + 1);
1107  return AVERROR_INVALIDDATA;
1108  }
1109 
1110  av_assert1(first_slice);
1111 
1112  if (flush_changes)
1113  ff_h264_flush_change(h);
1114 
1115  if ((ret = get_pixel_format(h, 1)) < 0)
1116  return ret;
1117  h->avctx->pix_fmt = ret;
1118 
1119  av_log(h->avctx, AV_LOG_VERBOSE, "Reinit context to %dx%d, "
1120  "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
1121 
1122  if ((ret = h264_slice_header_init(h)) < 0) {
1123  av_log(h->avctx, AV_LOG_ERROR,
1124  "h264_slice_header_init() failed\n");
1125  return ret;
1126  }
1127  }
1128 
1129  return 0;
1130 }
1131 
1132 static int h264_export_frame_props(H264Context *h)
1133 {
1134  const SPS *sps = h->ps.sps;
1135  H264Picture *cur = h->cur_pic_ptr;
1136 
1137  cur->f->interlaced_frame = 0;
1138  cur->f->repeat_pict = 0;
1139 
1140  /* Signal interlacing information externally. */
1141  /* Prioritize picture timing SEI information over used
1142  * decoding process if it exists. */
1143 
1144  if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1145  H264SEIPictureTiming *pt = &h->sei.picture_timing;
1146  switch (pt->pic_struct) {
1147  case H264_SEI_PIC_STRUCT_FRAME:
1148  break;
1149  case H264_SEI_PIC_STRUCT_TOP_FIELD:
1150  case H264_SEI_PIC_STRUCT_BOTTOM_FIELD:
1151  cur->f->interlaced_frame = 1;
1152  break;
1153  case H264_SEI_PIC_STRUCT_TOP_BOTTOM:
1154  case H264_SEI_PIC_STRUCT_BOTTOM_TOP:
1155  if (FIELD_OR_MBAFF_PICTURE(h))
1156  cur->f->interlaced_frame = 1;
1157  else
1158  // try to flag soft telecine progressive
1159  cur->f->interlaced_frame = h->prev_interlaced_frame;
1160  break;
1161  case H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1162  case H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1163  /* Signal the possibility of telecined film externally
1164  * (pic_struct 5,6). From these hints, let the applications
1165  * decide if they apply deinterlacing. */
1166  cur->f->repeat_pict = 1;
1167  break;
1168  case H264_SEI_PIC_STRUCT_FRAME_DOUBLING:
1169  cur->f->repeat_pict = 2;
1170  break;
1171  case H264_SEI_PIC_STRUCT_FRAME_TRIPLING:
1172  cur->f->repeat_pict = 4;
1173  break;
1174  }
1175 
1176  if ((pt->ct_type & 3) &&
1177  pt->pic_struct <= H264_SEI_PIC_STRUCT_BOTTOM_TOP)
1178  cur->f->interlaced_frame = (pt->ct_type & (1 << 1)) != 0;
1179  } else {
1180  /* Derive interlacing flag from used decoding process. */
1181  cur->f->interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
1182  }
1183  h->prev_interlaced_frame = cur->f->interlaced_frame;
1184 
1185  if (cur->field_poc[0] != cur->field_poc[1]) {
1186  /* Derive top_field_first from field pocs. */
1187  cur->f->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1188  } else {
1189  if (sps->pic_struct_present_flag && h->sei.picture_timing.present) {
1190  /* Use picture timing SEI information. Even if it is a
1191  * information of a past frame, better than nothing. */
1192  if (h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM ||
1193  h->sei.picture_timing.pic_struct == H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1194  cur->f->top_field_first = 1;
1195  else
1196  cur->f->top_field_first = 0;
1197  } else if (cur->f->interlaced_frame) {
1198  /* Default to top field first when pic_struct_present_flag
1199  * is not set but interlaced frame detected */
1200  cur->f->top_field_first = 1;
1201  } else {
1202  /* Most likely progressive */
1203  cur->f->top_field_first = 0;
1204  }
1205  }
1206 
1207  if (h->sei.frame_packing.present &&
1208  h->sei.frame_packing.arrangement_type <= 6 &&
1209  h->sei.frame_packing.content_interpretation_type > 0 &&
1210  h->sei.frame_packing.content_interpretation_type < 3) {
1211  H264SEIFramePacking *fp = &h->sei.frame_packing;
1212  AVStereo3D *stereo = av_stereo3d_create_side_data(cur->f);
1213  if (stereo) {
1214  switch (fp->arrangement_type) {
1215  case H264_SEI_FPA_TYPE_CHECKERBOARD:
1216  stereo->type = AV_STEREO3D_CHECKERBOARD;
1217  break;
1218  case H264_SEI_FPA_TYPE_INTERLEAVE_COLUMN:
1219  stereo->type = AV_STEREO3D_COLUMNS;
1220  break;
1221  case H264_SEI_FPA_TYPE_INTERLEAVE_ROW:
1222  stereo->type = AV_STEREO3D_LINES;
1223  break;
1224  case H264_SEI_FPA_TYPE_SIDE_BY_SIDE:
1225  if (fp->quincunx_sampling_flag)
1226  stereo->type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
1227  else
1228  stereo->type = AV_STEREO3D_SIDEBYSIDE;
1229  break;
1230  case H264_SEI_FPA_TYPE_TOP_BOTTOM:
1231  stereo->type = AV_STEREO3D_TOPBOTTOM;
1232  break;
1233  case H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL:
1234  stereo->type = AV_STEREO3D_FRAMESEQUENCE;
1235  break;
1236  case H264_SEI_FPA_TYPE_2D:
1237  stereo->type = AV_STEREO3D_2D;
1238  break;
1239  }
1240 
1241  if (fp->content_interpretation_type == 2)
1242  stereo->flags = AV_STEREO3D_FLAG_INVERT;
1243 
1244  if (fp->arrangement_type == H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL) {
1245  if (fp->current_frame_is_frame0_flag)
1246  stereo->view = AV_STEREO3D_VIEW_LEFT;
1247  else
1248  stereo->view = AV_STEREO3D_VIEW_RIGHT;
1249  }
1250  }
1251  }
1252 
1253  if (h->sei.display_orientation.present &&
1254  (h->sei.display_orientation.anticlockwise_rotation ||
1255  h->sei.display_orientation.hflip ||
1256  h->sei.display_orientation.vflip)) {
1257  H264SEIDisplayOrientation *o = &h->sei.display_orientation;
1258  double angle = o->anticlockwise_rotation * 360 / (double) (1 << 16);
1259  AVFrameSideData *rotation = av_frame_new_side_data(cur->f,
1260  AV_FRAME_DATA_DISPLAYMATRIX,
1261  sizeof(int32_t) * 9);
1262  if (rotation) {
1263  av_display_rotation_set((int32_t *)rotation->data, angle);
1264  av_display_matrix_flip((int32_t *)rotation->data,
1265  o->hflip, o->vflip);
1266  }
1267  }
1268 
1269  if (h->sei.afd.present) {
1270  AVFrameSideData *sd = av_frame_new_side_data(cur->f, AV_FRAME_DATA_AFD,
1271  sizeof(uint8_t));
1272 
1273  if (sd) {
1274  *sd->data = h->sei.afd.active_format_description;
1275  h->sei.afd.present = 0;
1276  }
1277  }
1278 
1279  if (h->sei.a53_caption.buf_ref) {
1280  H264SEIA53Caption *a53 = &h->sei.a53_caption;
1281 
1282  AVFrameSideData *sd = av_frame_new_side_data_from_buf(cur->f, AV_FRAME_DATA_A53_CC, a53->buf_ref);
1283  if (!sd)
1284  av_buffer_unref(&a53->buf_ref);
1285  a53->buf_ref = NULL;
1286 
1287  h->avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS;
1288  }
1289 
1290  if (h->sei.alternative_transfer.present &&
1291  av_color_transfer_name(h->sei.alternative_transfer.preferred_transfer_characteristics) &&
1292  h->sei.alternative_transfer.preferred_transfer_characteristics != AVCOL_TRC_UNSPECIFIED) {
1293  h->avctx->color_trc = cur->f->color_trc = h->sei.alternative_transfer.preferred_transfer_characteristics;
1294  }
1295 
1296  return 0;
1297 }
1298 
1299 static int h264_select_output_frame(H264Context *h)
1300 {
1301  const SPS *sps = h->ps.sps;
1302  H264Picture *out = h->cur_pic_ptr;
1303  H264Picture *cur = h->cur_pic_ptr;
1304  int i, pics, out_of_order, out_idx;
1305 
1306  cur->mmco_reset = h->mmco_reset;
1307  h->mmco_reset = 0;
1308 
1309  if (sps->bitstream_restriction_flag ||
1310  h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
1311  h->avctx->has_b_frames = FFMAX(h->avctx->has_b_frames, sps->num_reorder_frames);
1312  }
1313 
1314  for (i = 0; 1; i++) {
1315  if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
1316  if(i)
1317  h->last_pocs[i-1] = cur->poc;
1318  break;
1319  } else if(i) {
1320  h->last_pocs[i-1]= h->last_pocs[i];
1321  }
1322  }
1323  out_of_order = MAX_DELAYED_PIC_COUNT - i;
1324  if( cur->f->pict_type == AV_PICTURE_TYPE_B
1325  || (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))
1326  out_of_order = FFMAX(out_of_order, 1);
1327  if (out_of_order == MAX_DELAYED_PIC_COUNT) {
1328  av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
1329  for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
1330  h->last_pocs[i] = INT_MIN;
1331  h->last_pocs[0] = cur->poc;
1332  cur->mmco_reset = 1;
1333  } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
1334  int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
1335  av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
1336  h->avctx->has_b_frames = out_of_order;
1337  }
1338 
1339  pics = 0;
1340  while (h->delayed_pic[pics])
1341  pics++;
1342 
1343  av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
1344 
1345  h->delayed_pic[pics++] = cur;
1346  if (cur->reference == 0)
1347  cur->reference = DELAYED_PIC_REF;
1348 
1349  out = h->delayed_pic[0];
1350  out_idx = 0;
1351  for (i = 1; h->delayed_pic[i] &&
1352  !h->delayed_pic[i]->f->key_frame &&
1353  !h->delayed_pic[i]->mmco_reset;
1354  i++)
1355  if (h->delayed_pic[i]->poc < out->poc) {
1356  out = h->delayed_pic[i];
1357  out_idx = i;
1358  }
1359  if (h->avctx->has_b_frames == 0 &&
1360  (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
1361  h->next_outputed_poc = INT_MIN;
1362  out_of_order = out->poc < h->next_outputed_poc;
1363 
1364  if (out_of_order || pics > h->avctx->has_b_frames) {
1365  out->reference &= ~DELAYED_PIC_REF;
1366  for (i = out_idx; h->delayed_pic[i]; i++)
1367  h->delayed_pic[i] = h->delayed_pic[i + 1];
1368  }
1369  if (!out_of_order && pics > h->avctx->has_b_frames) {
1370  h->next_output_pic = out;
1371  if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
1372  h->next_outputed_poc = INT_MIN;
1373  } else
1374  h->next_outputed_poc = out->poc;
1375 
1376  if (out->recovered) {
1377  // We have reached an recovery point and all frames after it in
1378  // display order are "recovered".
1379  h->frame_recovered |= FRAME_RECOVERED_SEI;
1380  }
1381  out->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_SEI);
1382 
1383  if (!out->recovered) {
1384  if (!(h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) &&
1385  !(h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) {
1386  h->next_output_pic = NULL;
1387  } else {
1388  out->f->flags |= AV_FRAME_FLAG_CORRUPT;
1389  }
1390  }
1391  } else {
1392  av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
1393  }
1394 
1395  return 0;
1396 }
1397 
1398 /* This function is called right after decoding the slice header for a first
1399  * slice in a field (or a frame). It decides whether we are decoding a new frame
1400  * or a second field in a pair and does the necessary setup.
1401  */
1402 static int h264_field_start(H264Context *h, const H264SliceContext *sl,
1403  const H2645NAL *nal, int first_slice)
1404 {
1405  int i;
1406  const SPS *sps;
1407 
1408  int last_pic_structure, last_pic_droppable, ret;
1409 
1410  ret = h264_init_ps(h, sl, first_slice);
1411  if (ret < 0)
1412  return ret;
1413 
1414  sps = h->ps.sps;
1415 
1416  if (sps && sps->bitstream_restriction_flag &&
1417  h->avctx->has_b_frames < sps->num_reorder_frames) {
1418  h->avctx->has_b_frames = sps->num_reorder_frames;
1419  }
1420 
1421  last_pic_droppable = h->droppable;
1422  last_pic_structure = h->picture_structure;
1423  h->droppable = (nal->ref_idc == 0);
1424  h->picture_structure = sl->picture_structure;
1425 
1426  h->poc.frame_num = sl->frame_num;
1427  h->poc.poc_lsb = sl->poc_lsb;
1428  h->poc.delta_poc_bottom = sl->delta_poc_bottom;
1429  h->poc.delta_poc[0] = sl->delta_poc[0];
1430  h->poc.delta_poc[1] = sl->delta_poc[1];
1431 
1432  /* Shorten frame num gaps so we don't have to allocate reference
1433  * frames just to throw them away */
1434  if (h->poc.frame_num != h->poc.prev_frame_num) {
1435  int unwrap_prev_frame_num = h->poc.prev_frame_num;
1436  int max_frame_num = 1 << sps->log2_max_frame_num;
1437 
1438  if (unwrap_prev_frame_num > h->poc.frame_num)
1439  unwrap_prev_frame_num -= max_frame_num;
1440 
1441  if ((h->poc.frame_num - unwrap_prev_frame_num) > sps->ref_frame_count) {
1442  unwrap_prev_frame_num = (h->poc.frame_num - sps->ref_frame_count) - 1;
1443  if (unwrap_prev_frame_num < 0)
1444  unwrap_prev_frame_num += max_frame_num;
1445 
1446  h->poc.prev_frame_num = unwrap_prev_frame_num;
1447  }
1448  }
1449 
1450  /* See if we have a decoded first field looking for a pair...
1451  * Here, we're using that to see if we should mark previously
1452  * decode frames as "finished".
1453  * We have to do that before the "dummy" in-between frame allocation,
1454  * since that can modify h->cur_pic_ptr. */
1455  if (h->first_field) {
1456  int last_field = last_pic_structure == PICT_BOTTOM_FIELD;
1457  av_assert0(h->cur_pic_ptr);
1458  av_assert0(h->cur_pic_ptr->f->buf[0]);
1459  assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1460 
1461  /* Mark old field/frame as completed */
1462  if (h->cur_pic_ptr->tf.owner[last_field] == h->avctx) {
1463  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, last_field);
1464  }
1465 
1466  /* figure out if we have a complementary field pair */
1467  if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1468  /* Previous field is unmatched. Don't display it, but let it
1469  * remain for reference if marked as such. */
1470  if (last_pic_structure != PICT_FRAME) {
1471  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1472  last_pic_structure == PICT_TOP_FIELD);
1473  }
1474  } else {
1475  if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1476  /* This and previous field were reference, but had
1477  * different frame_nums. Consider this field first in
1478  * pair. Throw away previous field except for reference
1479  * purposes. */
1480  if (last_pic_structure != PICT_FRAME) {
1481  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1482  last_pic_structure == PICT_TOP_FIELD);
1483  }
1484  } else {
1485  /* Second field in complementary pair */
1486  if (!((last_pic_structure == PICT_TOP_FIELD &&
1487  h->picture_structure == PICT_BOTTOM_FIELD) ||
1488  (last_pic_structure == PICT_BOTTOM_FIELD &&
1489  h->picture_structure == PICT_TOP_FIELD))) {
1490  av_log(h->avctx, AV_LOG_ERROR,
1491  "Invalid field mode combination %d/%d\n",
1492  last_pic_structure, h->picture_structure);
1493  h->picture_structure = last_pic_structure;
1494  h->droppable = last_pic_droppable;
1495  return AVERROR_INVALIDDATA;
1496  } else if (last_pic_droppable != h->droppable) {
1497  avpriv_request_sample(h->avctx,
1498  "Found reference and non-reference fields in the same frame, which");
1499  h->picture_structure = last_pic_structure;
1500  h->droppable = last_pic_droppable;
1501  return AVERROR_PATCHWELCOME;
1502  }
1503  }
1504  }
1505  }
1506 
1507  while (h->poc.frame_num != h->poc.prev_frame_num && !h->first_field &&
1508  h->poc.frame_num != (h->poc.prev_frame_num + 1) % (1 << sps->log2_max_frame_num)) {
1509  H264Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1510  av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
1511  h->poc.frame_num, h->poc.prev_frame_num);
1512  if (!sps->gaps_in_frame_num_allowed_flag)
1513  for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
1514  h->last_pocs[i] = INT_MIN;
1515  ret = h264_frame_start(h);
1516  if (ret < 0) {
1517  h->first_field = 0;
1518  return ret;
1519  }
1520 
1521  h->poc.prev_frame_num++;
1522  h->poc.prev_frame_num %= 1 << sps->log2_max_frame_num;
1523  h->cur_pic_ptr->frame_num = h->poc.prev_frame_num;
1524  h->cur_pic_ptr->invalid_gap = !sps->gaps_in_frame_num_allowed_flag;
1525  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
1526  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
1527 
1528  h->explicit_ref_marking = 0;
1529  ret = ff_h264_execute_ref_pic_marking(h);
1530  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1531  return ret;
1532  /* Error concealment: If a ref is missing, copy the previous ref
1533  * in its place.
1534  * FIXME: Avoiding a memcpy would be nice, but ref handling makes
1535  * many assumptions about there being no actual duplicates.
1536  * FIXME: This does not copy padding for out-of-frame motion
1537  * vectors. Given we are concealing a lost frame, this probably
1538  * is not noticeable by comparison, but it should be fixed. */
1539  if (h->short_ref_count) {
1540  if (prev &&
1541  h->short_ref[0]->f->width == prev->f->width &&
1542  h->short_ref[0]->f->height == prev->f->height &&
1543  h->short_ref[0]->f->format == prev->f->format) {
1544  ff_thread_await_progress(&prev->tf, INT_MAX, 0);
1545  if (prev->field_picture)
1546  ff_thread_await_progress(&prev->tf, INT_MAX, 1);
1547  av_image_copy(h->short_ref[0]->f->data,
1548  h->short_ref[0]->f->linesize,
1549  (const uint8_t **)prev->f->data,
1550  prev->f->linesize,
1551  prev->f->format,
1552  prev->f->width,
1553  prev->f->height);
1554  h->short_ref[0]->poc = prev->poc + 2;
1555  }
1556  h->short_ref[0]->frame_num = h->poc.prev_frame_num;
1557  }
1558  }
1559 
1560  /* See if we have a decoded first field looking for a pair...
1561  * We're using that to see whether to continue decoding in that
1562  * frame, or to allocate a new one. */
1563  if (h->first_field) {
1564  av_assert0(h->cur_pic_ptr);
1565  av_assert0(h->cur_pic_ptr->f->buf[0]);
1566  assert(h->cur_pic_ptr->reference != DELAYED_PIC_REF);
1567 
1568  /* figure out if we have a complementary field pair */
1569  if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
1570  /* Previous field is unmatched. Don't display it, but let it
1571  * remain for reference if marked as such. */
1572  h->missing_fields ++;
1573  h->cur_pic_ptr = NULL;
1574  h->first_field = FIELD_PICTURE(h);
1575  } else {
1576  h->missing_fields = 0;
1577  if (h->cur_pic_ptr->frame_num != h->poc.frame_num) {
1578  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
1579  h->picture_structure==PICT_BOTTOM_FIELD);
1580  /* This and the previous field had different frame_nums.
1581  * Consider this field first in pair. Throw away previous
1582  * one except for reference purposes. */
1583  h->first_field = 1;
1584  h->cur_pic_ptr = NULL;
1585  } else if (h->cur_pic_ptr->reference & DELAYED_PIC_REF) {
1586  /* This frame was already output, we cannot draw into it
1587  * anymore.
1588  */
1589  h->first_field = 1;
1590  h->cur_pic_ptr = NULL;
1591  } else {
1592  /* Second field in complementary pair */
1593  h->first_field = 0;
1594  }
1595  }
1596  } else {
1597  /* Frame or first field in a potentially complementary pair */
1598  h->first_field = FIELD_PICTURE(h);
1599  }
1600 
1601  if (!FIELD_PICTURE(h) || h->first_field) {
1602  if (h264_frame_start(h) < 0) {
1603  h->first_field = 0;
1604  return AVERROR_INVALIDDATA;
1605  }
1606  } else {
1607  int field = h->picture_structure == PICT_BOTTOM_FIELD;
1608  release_unused_pictures(h, 0);
1609  h->cur_pic_ptr->tf.owner[field] = h->avctx;
1610  }
1611  /* Some macroblocks can be accessed before they're available in case
1612  * of lost slices, MBAFF or threading. */
1613  if (FIELD_PICTURE(h)) {
1614  for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++)
1615  memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table));
1616  } else {
1617  memset(h->slice_table, -1,
1618  (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
1619  }
1620 
1621  ret = ff_h264_init_poc(h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc,
1622  h->ps.sps, &h->poc, h->picture_structure, nal->ref_idc);
1623  if (ret < 0)
1624  return ret;
1625 
1626  memcpy(h->mmco, sl->mmco, sl->nb_mmco * sizeof(*h->mmco));
1627  h->nb_mmco = sl->nb_mmco;
1628  h->explicit_ref_marking = sl->explicit_ref_marking;
1629 
1630  h->picture_idr = nal->type == H264_NAL_IDR_SLICE;
1631 
1632  if (h->sei.recovery_point.recovery_frame_cnt >= 0) {
1633  const int sei_recovery_frame_cnt = h->sei.recovery_point.recovery_frame_cnt;
1634 
1635  if (h->poc.frame_num != sei_recovery_frame_cnt || sl->slice_type_nos != AV_PICTURE_TYPE_I)
1636  h->valid_recovery_point = 1;
1637 
1638  if ( h->recovery_frame < 0
1639  || av_mod_uintp2(h->recovery_frame - h->poc.frame_num, h->ps.sps->log2_max_frame_num) > sei_recovery_frame_cnt) {
1640  h->recovery_frame = av_mod_uintp2(h->poc.frame_num + sei_recovery_frame_cnt, h->ps.sps->log2_max_frame_num);
1641 
1642  if (!h->valid_recovery_point)
1643  h->recovery_frame = h->poc.frame_num;
1644  }
1645  }
1646 
1647  h->cur_pic_ptr->f->key_frame |= (nal->type == H264_NAL_IDR_SLICE);
1648 
1649  if (nal->type == H264_NAL_IDR_SLICE ||
1650  (h->recovery_frame == h->poc.frame_num && nal->ref_idc)) {
1651  h->recovery_frame = -1;
1652  h->cur_pic_ptr->recovered = 1;
1653  }
1654  // If we have an IDR, all frames after it in decoded order are
1655  // "recovered".
1656  if (nal->type == H264_NAL_IDR_SLICE)
1657  h->frame_recovered |= FRAME_RECOVERED_IDR;
1658 #if 1
1659  h->cur_pic_ptr->recovered |= h->frame_recovered;
1660 #else
1661  h->cur_pic_ptr->recovered |= !!(h->frame_recovered & FRAME_RECOVERED_IDR);
1662 #endif
1663 
1664  /* Set the frame properties/side data. Only done for the second field in
1665  * field coded frames, since some SEI information is present for each field
1666  * and is merged by the SEI parsing code. */
1667  if (!FIELD_PICTURE(h) || !h->first_field || h->missing_fields > 1) {
1668  ret = h264_export_frame_props(h);
1669  if (ret < 0)
1670  return ret;
1671 
1672  ret = h264_select_output_frame(h);
1673  if (ret < 0)
1674  return ret;
1675  }
1676 
1677  return 0;
1678 }
1679 
1680 static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl,
1681  const H2645NAL *nal)
1682 {
1683  const SPS *sps;
1684  const PPS *pps;
1685  int ret;
1686  unsigned int slice_type, tmp, i;
1687  int field_pic_flag, bottom_field_flag;
1688  int first_slice = sl == h->slice_ctx && !h->current_slice;
1689  int picture_structure;
1690 
1691  if (first_slice)
1692  av_assert0(!h->setup_finished);
1693 
1694  sl->first_mb_addr = get_ue_golomb_long(&sl->gb);
1695 
1696  slice_type = get_ue_golomb_31(&sl->gb);
1697  if (slice_type > 9) {
1698  av_log(h->avctx, AV_LOG_ERROR,
1699  "slice type %d too large at %d\n",
1700  slice_type, sl->first_mb_addr);
1701  return AVERROR_INVALIDDATA;
1702  }
1703  if (slice_type > 4) {
1704  slice_type -= 5;
1705  sl->slice_type_fixed = 1;
1706  } else
1707  sl->slice_type_fixed = 0;
1708 
1709  slice_type = ff_h264_golomb_to_pict_type[slice_type];
1710  sl->slice_type = slice_type;
1711  sl->slice_type_nos = slice_type & 3;
1712 
1713  if (nal->type == H264_NAL_IDR_SLICE &&
1714  sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1715  av_log(h->avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
1716  return AVERROR_INVALIDDATA;
1717  }
1718 
1719  sl->pps_id = get_ue_golomb(&sl->gb);
1720  if (sl->pps_id >= MAX_PPS_COUNT) {
1721  av_log(h->avctx, AV_LOG_ERROR, "pps_id %u out of range\n", sl->pps_id);
1722  return AVERROR_INVALIDDATA;
1723  }
1724  if (!h->ps.pps_list[sl->pps_id]) {
1725  av_log(h->avctx, AV_LOG_ERROR,
1726  "non-existing PPS %u referenced\n",
1727  sl->pps_id);
1728  return AVERROR_INVALIDDATA;
1729  }
1730  pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
1731 
1732  if (!h->ps.sps_list[pps->sps_id]) {
1733  av_log(h->avctx, AV_LOG_ERROR,
1734  "non-existing SPS %u referenced\n", pps->sps_id);
1735  return AVERROR_INVALIDDATA;
1736  }
1737  sps = (const SPS*)h->ps.sps_list[pps->sps_id]->data;
1738 
1739  sl->frame_num = get_bits(&sl->gb, sps->log2_max_frame_num);
1740  if (!first_slice) {
1741  if (h->poc.frame_num != sl->frame_num) {
1742  av_log(h->avctx, AV_LOG_ERROR, "Frame num change from %d to %d\n",
1743  h->poc.frame_num, sl->frame_num);
1744  return AVERROR_INVALIDDATA;
1745  }
1746  }
1747 
1748  sl->mb_mbaff = 0;
1749 
1750  if (sps->frame_mbs_only_flag) {
1751  picture_structure = PICT_FRAME;
1752  } else {
1753  if (!sps->direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
1754  av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
1755  return -1;
1756  }
1757  field_pic_flag = get_bits1(&sl->gb);
1758  if (field_pic_flag) {
1759  bottom_field_flag = get_bits1(&sl->gb);
1760  picture_structure = PICT_TOP_FIELD + bottom_field_flag;
1761  } else {
1762  picture_structure = PICT_FRAME;
1763  }
1764  }
1765  sl->picture_structure = picture_structure;
1766  sl->mb_field_decoding_flag = picture_structure != PICT_FRAME;
1767 
1768  if (picture_structure == PICT_FRAME) {
1769  sl->curr_pic_num = sl->frame_num;
1770  sl->max_pic_num = 1 << sps->log2_max_frame_num;
1771  } else {
1772  sl->curr_pic_num = 2 * sl->frame_num + 1;
1773  sl->max_pic_num = 1 << (sps->log2_max_frame_num + 1);
1774  }
1775 
1776  if (nal->type == H264_NAL_IDR_SLICE)
1777  get_ue_golomb_long(&sl->gb); /* idr_pic_id */
1778 
1779  if (sps->poc_type == 0) {
1780  sl->poc_lsb = get_bits(&sl->gb, sps->log2_max_poc_lsb);
1781 
1782  if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1783  sl->delta_poc_bottom = get_se_golomb(&sl->gb);
1784  }
1785 
1786  if (sps->poc_type == 1 && !sps->delta_pic_order_always_zero_flag) {
1787  sl->delta_poc[0] = get_se_golomb(&sl->gb);
1788 
1789  if (pps->pic_order_present == 1 && picture_structure == PICT_FRAME)
1790  sl->delta_poc[1] = get_se_golomb(&sl->gb);
1791  }
1792 
1793  sl->redundant_pic_count = 0;
1794  if (pps->redundant_pic_cnt_present)
1795  sl->redundant_pic_count = get_ue_golomb(&sl->gb);
1796 
1797  if (sl->slice_type_nos == AV_PICTURE_TYPE_B)
1798  sl->direct_spatial_mv_pred = get_bits1(&sl->gb);
1799 
1800  ret = ff_h264_parse_ref_count(&sl->list_count, sl->ref_count,
1801  &sl->gb, pps, sl->slice_type_nos,
1802  picture_structure, h->avctx);
1803  if (ret < 0)
1804  return ret;
1805 
1806  if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {
1807  ret = ff_h264_decode_ref_pic_list_reordering(sl, h->avctx);
1808  if (ret < 0) {
1809  sl->ref_count[1] = sl->ref_count[0] = 0;
1810  return ret;
1811  }
1812  }
1813 
1814  sl->pwt.use_weight = 0;
1815  for (i = 0; i < 2; i++) {
1816  sl->pwt.luma_weight_flag[i] = 0;
1817  sl->pwt.chroma_weight_flag[i] = 0;
1818  }
1819  if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
1820  (pps->weighted_bipred_idc == 1 &&
1821  sl->slice_type_nos == AV_PICTURE_TYPE_B)) {
1822  ret = ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
1823  sl->slice_type_nos, &sl->pwt,
1824  picture_structure, h->avctx);
1825  if (ret < 0)
1826  return ret;
1827  }
1828 
1829  sl->explicit_ref_marking = 0;
1830  if (nal->ref_idc) {
1831  ret = ff_h264_decode_ref_pic_marking(sl, &sl->gb, nal, h->avctx);
1832  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
1833  return AVERROR_INVALIDDATA;
1834  }
1835 
1836  if (sl->slice_type_nos != AV_PICTURE_TYPE_I && pps->cabac) {
1837  tmp = get_ue_golomb_31(&sl->gb);
1838  if (tmp > 2) {
1839  av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc %u overflow\n", tmp);
1840  return AVERROR_INVALIDDATA;
1841  }
1842  sl->cabac_init_idc = tmp;
1843  }
1844 
1845  sl->last_qscale_diff = 0;
1846  tmp = pps->init_qp + (unsigned)get_se_golomb(&sl->gb);
1847  if (tmp > 51 + 6 * (sps->bit_depth_luma - 8)) {
1848  av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
1849  return AVERROR_INVALIDDATA;
1850  }
1851  sl->qscale = tmp;
1852  sl->chroma_qp[0] = get_chroma_qp(pps, 0, sl->qscale);
1853  sl->chroma_qp[1] = get_chroma_qp(pps, 1, sl->qscale);
1854  // FIXME qscale / qp ... stuff
1855  if (sl->slice_type == AV_PICTURE_TYPE_SP)
1856  get_bits1(&sl->gb); /* sp_for_switch_flag */
1857  if (sl->slice_type == AV_PICTURE_TYPE_SP ||
1858  sl->slice_type == AV_PICTURE_TYPE_SI)
1859  get_se_golomb(&sl->gb); /* slice_qs_delta */
1860 
1861  sl->deblocking_filter = 1;
1862  sl->slice_alpha_c0_offset = 0;
1863  sl->slice_beta_offset = 0;
1864  if (pps->deblocking_filter_parameters_present) {
1865  tmp = get_ue_golomb_31(&sl->gb);
1866  if (tmp > 2) {
1867  av_log(h->avctx, AV_LOG_ERROR,
1868  "deblocking_filter_idc %u out of range\n", tmp);
1869  return AVERROR_INVALIDDATA;
1870  }
1871  sl->deblocking_filter = tmp;
1872  if (sl->deblocking_filter < 2)
1873  sl->deblocking_filter ^= 1; // 1<->0
1874 
1875  if (sl->deblocking_filter) {
1876  int slice_alpha_c0_offset_div2 = get_se_golomb(&sl->gb);
1877  int slice_beta_offset_div2 = get_se_golomb(&sl->gb);
1878  if (slice_alpha_c0_offset_div2 > 6 ||
1879  slice_alpha_c0_offset_div2 < -6 ||
1880  slice_beta_offset_div2 > 6 ||
1881  slice_beta_offset_div2 < -6) {
1882  av_log(h->avctx, AV_LOG_ERROR,
1883  "deblocking filter parameters %d %d out of range\n",
1884  slice_alpha_c0_offset_div2, slice_beta_offset_div2);
1885  return AVERROR_INVALIDDATA;
1886  }
1887  sl->slice_alpha_c0_offset = slice_alpha_c0_offset_div2 * 2;
1888  sl->slice_beta_offset = slice_beta_offset_div2 * 2;
1889  }
1890  }
1891 
1892  return 0;
1893 }
1894 
1895 /* do all the per-slice initialization needed before we can start decoding the
1896  * actual MBs */
1897 static int h264_slice_init(H264Context *h, H264SliceContext *sl,
1898  const H2645NAL *nal)
1899 {
1900  int i, j, ret = 0;
1901 
1902  if (h->picture_idr && nal->type != H264_NAL_IDR_SLICE) {
1903  av_log(h->avctx, AV_LOG_ERROR, "Invalid mix of IDR and non-IDR slices\n");
1904  return AVERROR_INVALIDDATA;
1905  }
1906 
1907  av_assert1(h->mb_num == h->mb_width * h->mb_height);
1908  if (sl->first_mb_addr << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
1909  sl->first_mb_addr >= h->mb_num) {
1910  av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1911  return AVERROR_INVALIDDATA;
1912  }
1913  sl->resync_mb_x = sl->mb_x = sl->first_mb_addr % h->mb_width;
1914  sl->resync_mb_y = sl->mb_y = (sl->first_mb_addr / h->mb_width) <<
1915  FIELD_OR_MBAFF_PICTURE(h);
1916  if (h->picture_structure == PICT_BOTTOM_FIELD)
1917  sl->resync_mb_y = sl->mb_y = sl->mb_y + 1;
1918  av_assert1(sl->mb_y < h->mb_height);
1919 
1920  ret = ff_h264_build_ref_list(h, sl);
1921  if (ret < 0)
1922  return ret;
1923 
1924  if (h->ps.pps->weighted_bipred_idc == 2 &&
1925  sl->slice_type_nos == AV_PICTURE_TYPE_B) {
1926  implicit_weight_table(h, sl, -1);
1927  if (FRAME_MBAFF(h)) {
1928  implicit_weight_table(h, sl, 0);
1929  implicit_weight_table(h, sl, 1);
1930  }
1931  }
1932 
1933  if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
1934  ff_h264_direct_dist_scale_factor(h, sl);
1935  if (!h->setup_finished)
1936  ff_h264_direct_ref_list_init(h, sl);
1937 
1938  if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
1939  (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
1940  h->nal_unit_type != H264_NAL_IDR_SLICE) ||
1941  (h->avctx->skip_loop_filter >= AVDISCARD_NONINTRA &&
1942  sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
1943  (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
1944  sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
1945  (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
1946  nal->ref_idc == 0))
1947  sl->deblocking_filter = 0;
1948 
1949  if (sl->deblocking_filter == 1 && h->nb_slice_ctx > 1) {
1950  if (h->avctx->flags2 & AV_CODEC_FLAG2_FAST) {
1951  /* Cheat slightly for speed:
1952  * Do not bother to deblock across slices. */
1953  sl->deblocking_filter = 2;
1954  } else {
1955  h->postpone_filter = 1;
1956  }
1957  }
1958  sl->qp_thresh = 15 -
1959  FFMIN(sl->slice_alpha_c0_offset, sl->slice_beta_offset) -
1960  FFMAX3(0,
1961  h->ps.pps->chroma_qp_index_offset[0],
1962  h->ps.pps->chroma_qp_index_offset[1]) +
1963  6 * (h->ps.sps->bit_depth_luma - 8);
1964 
1965  sl->slice_num = ++h->current_slice;
1966 
1967  if (sl->slice_num)
1968  h->slice_row[(sl->slice_num-1)&(MAX_SLICES-1)]= sl->resync_mb_y;
1969  if ( h->slice_row[sl->slice_num&(MAX_SLICES-1)] + 3 >= sl->resync_mb_y
1970  && h->slice_row[sl->slice_num&(MAX_SLICES-1)] <= sl->resync_mb_y
1971  && sl->slice_num >= MAX_SLICES) {
1972  //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
1973  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);
1974  }
1975 
1976  for (j = 0; j < 2; j++) {
1977  int id_list[16];
1978  int *ref2frm = h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][j];
1979  for (i = 0; i < 16; i++) {
1980  id_list[i] = 60;
1981  if (j < sl->list_count && i < sl->ref_count[j] &&
1982  sl->ref_list[j][i].parent->f->buf[0]) {
1983  int k;
1984  AVBuffer *buf = sl->ref_list[j][i].parent->f->buf[0]->buffer;
1985  for (k = 0; k < h->short_ref_count; k++)
1986  if (h->short_ref[k]->f->buf[0]->buffer == buf) {
1987  id_list[i] = k;
1988  break;
1989  }
1990  for (k = 0; k < h->long_ref_count; k++)
1991  if (h->long_ref[k] && h->long_ref[k]->f->buf[0]->buffer == buf) {
1992  id_list[i] = h->short_ref_count + k;
1993  break;
1994  }
1995  }
1996  }
1997 
1998  ref2frm[0] =
1999  ref2frm[1] = -1;
2000  for (i = 0; i < 16; i++)
2001  ref2frm[i + 2] = 4 * id_list[i] + (sl->ref_list[j][i].reference & 3);
2002  ref2frm[18 + 0] =
2003  ref2frm[18 + 1] = -1;
2004  for (i = 16; i < 48; i++)
2005  ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
2006  (sl->ref_list[j][i].reference & 3);
2007  }
2008 
2009  if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
2010  av_log(h->avctx, AV_LOG_DEBUG,
2011  "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",
2012  sl->slice_num,
2013  (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
2014  sl->mb_y * h->mb_width + sl->mb_x,
2015  av_get_picture_type_char(sl->slice_type),
2016  sl->slice_type_fixed ? " fix" : "",
2017  nal->type == H264_NAL_IDR_SLICE ? " IDR" : "",
2018  h->poc.frame_num,
2019  h->cur_pic_ptr->field_poc[0],
2020  h->cur_pic_ptr->field_poc[1],
2021  sl->ref_count[0], sl->ref_count[1],
2022  sl->qscale,
2023  sl->deblocking_filter,
2024  sl->slice_alpha_c0_offset, sl->slice_beta_offset,
2025  sl->pwt.use_weight,
2026  sl->pwt.use_weight == 1 && sl->pwt.use_weight_chroma ? "c" : "",
2027  sl->slice_type == AV_PICTURE_TYPE_B ? (sl->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
2028  }
2029 
2030  return 0;
2031 }
2032 
2033 int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
2034 {
2035  H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
2036  int first_slice = sl == h->slice_ctx && !h->current_slice;
2037  int ret;
2038 
2039  sl->gb = nal->gb;
2040 
2041  ret = h264_slice_header_parse(h, sl, nal);
2042  if (ret < 0)
2043  return ret;
2044 
2045  // discard redundant pictures
2046  if (sl->redundant_pic_count > 0) {
2047  sl->ref_count[0] = sl->ref_count[1] = 0;
2048  return 0;
2049  }
2050 
2051  if (sl->first_mb_addr == 0 || !h->current_slice) {
2052  if (h->setup_finished) {
2053  av_log(h->avctx, AV_LOG_ERROR, "Too many fields\n");
2054  return AVERROR_INVALIDDATA;
2055  }
2056  }
2057 
2058  if (sl->first_mb_addr == 0) { // FIXME better field boundary detection
2059  if (h->current_slice) {
2060  // this slice starts a new field
2061  // first decode any pending queued slices
2062  if (h->nb_slice_ctx_queued) {
2063  H264SliceContext tmp_ctx;
2064 
2065  ret = ff_h264_execute_decode_slices(h);
2066  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
2067  return ret;
2068 
2069  memcpy(&tmp_ctx, h->slice_ctx, sizeof(tmp_ctx));
2070  memcpy(h->slice_ctx, sl, sizeof(tmp_ctx));
2071  memcpy(sl, &tmp_ctx, sizeof(tmp_ctx));
2072  sl = h->slice_ctx;
2073  }
2074 
2075  if (h->cur_pic_ptr && FIELD_PICTURE(h) && h->first_field) {
2076  ret = ff_h264_field_end(h, h->slice_ctx, 1);
2077  if (ret < 0)
2078  return ret;
2079  } else if (h->cur_pic_ptr && !FIELD_PICTURE(h) && !h->first_field && h->nal_unit_type == H264_NAL_IDR_SLICE) {
2080  av_log(h, AV_LOG_WARNING, "Broken frame packetizing\n");
2081  ret = ff_h264_field_end(h, h->slice_ctx, 1);
2082  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
2083  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
2084  h->cur_pic_ptr = NULL;
2085  if (ret < 0)
2086  return ret;
2087  } else
2088  return AVERROR_INVALIDDATA;
2089  }
2090 
2091  if (!h->first_field) {
2092  if (h->cur_pic_ptr && !h->droppable) {
2093  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2094  h->picture_structure == PICT_BOTTOM_FIELD);
2095  }
2096  h->cur_pic_ptr = NULL;
2097  }
2098  }
2099 
2100  if (!h->current_slice)
2101  av_assert0(sl == h->slice_ctx);
2102 
2103  if (h->current_slice == 0 && !h->first_field) {
2104  if (
2105  (h->avctx->skip_frame >= AVDISCARD_NONREF && !h->nal_ref_idc) ||
2106  (h->avctx->skip_frame >= AVDISCARD_BIDIR && sl->slice_type_nos == AV_PICTURE_TYPE_B) ||
2107  (h->avctx->skip_frame >= AVDISCARD_NONINTRA && sl->slice_type_nos != AV_PICTURE_TYPE_I) ||
2108  (h->avctx->skip_frame >= AVDISCARD_NONKEY && h->nal_unit_type != H264_NAL_IDR_SLICE && h->sei.recovery_point.recovery_frame_cnt < 0) ||
2109  h->avctx->skip_frame >= AVDISCARD_ALL) {
2110  return 0;
2111  }
2112  }
2113 
2114  if (!first_slice) {
2115  const PPS *pps = (const PPS*)h->ps.pps_list[sl->pps_id]->data;
2116 
2117  if (h->ps.pps->sps_id != pps->sps_id ||
2118  h->ps.pps->transform_8x8_mode != pps->transform_8x8_mode /*||
2119  (h->setup_finished && h->ps.pps != pps)*/) {
2120  av_log(h->avctx, AV_LOG_ERROR, "PPS changed between slices\n");
2121  return AVERROR_INVALIDDATA;
2122  }
2123  if (h->ps.sps != (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data) {
2124  av_log(h->avctx, AV_LOG_ERROR,
2125  "SPS changed in the middle of the frame\n");
2126  return AVERROR_INVALIDDATA;
2127  }
2128  }
2129 
2130  if (h->current_slice == 0) {
2131  ret = h264_field_start(h, sl, nal, first_slice);
2132  if (ret < 0)
2133  return ret;
2134  } else {
2135  if (h->picture_structure != sl->picture_structure ||
2136  h->droppable != (nal->ref_idc == 0)) {
2137  av_log(h->avctx, AV_LOG_ERROR,
2138  "Changing field mode (%d -> %d) between slices is not allowed\n",
2139  h->picture_structure, sl->picture_structure);
2140  return AVERROR_INVALIDDATA;
2141  } else if (!h->cur_pic_ptr) {
2142  av_log(h->avctx, AV_LOG_ERROR,
2143  "unset cur_pic_ptr on slice %d\n",
2144  h->current_slice + 1);
2145  return AVERROR_INVALIDDATA;
2146  }
2147  }
2148 
2149  ret = h264_slice_init(h, sl, nal);
2150  if (ret < 0)
2151  return ret;
2152 
2153  h->nb_slice_ctx_queued++;
2154 
2155  return 0;
2156 }
2157 
2158 int ff_h264_get_slice_type(const H264SliceContext *sl)
2159 {
2160  switch (sl->slice_type) {
2161  case AV_PICTURE_TYPE_P:
2162  return 0;
2163  case AV_PICTURE_TYPE_B:
2164  return 1;
2165  case AV_PICTURE_TYPE_I:
2166  return 2;
2167  case AV_PICTURE_TYPE_SP:
2168  return 3;
2169  case AV_PICTURE_TYPE_SI:
2170  return 4;
2171  default:
2172  return AVERROR_INVALIDDATA;
2173  }
2174 }
2175 
2176 static av_always_inline void fill_filter_caches_inter(const H264Context *h,
2177  H264SliceContext *sl,
2178  int mb_type, int top_xy,
2179  int left_xy[LEFT_MBS],
2180  int top_type,
2181  int left_type[LEFT_MBS],
2182  int mb_xy, int list)
2183 {
2184  int b_stride = h->b_stride;
2185  int16_t(*mv_dst)[2] = &sl->mv_cache[list][scan8[0]];
2186  int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
2187  if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
2188  if (USES_LIST(top_type, list)) {
2189  const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
2190  const int b8_xy = 4 * top_xy + 2;
2191  const int *ref2frm = &h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2192  AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
2193  ref_cache[0 - 1 * 8] =
2194  ref_cache[1 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 0]];
2195  ref_cache[2 - 1 * 8] =
2196  ref_cache[3 - 1 * 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 1]];
2197  } else {
2198  AV_ZERO128(mv_dst - 1 * 8);
2199  AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2200  }
2201 
2202  if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
2203  if (USES_LIST(left_type[LTOP], list)) {
2204  const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
2205  const int b8_xy = 4 * left_xy[LTOP] + 1;
2206  const int *ref2frm = &h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2207  AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
2208  AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
2209  AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
2210  AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
2211  ref_cache[-1 + 0] =
2212  ref_cache[-1 + 8] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
2213  ref_cache[-1 + 16] =
2214  ref_cache[-1 + 24] = ref2frm[h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
2215  } else {
2216  AV_ZERO32(mv_dst - 1 + 0);
2217  AV_ZERO32(mv_dst - 1 + 8);
2218  AV_ZERO32(mv_dst - 1 + 16);
2219  AV_ZERO32(mv_dst - 1 + 24);
2220  ref_cache[-1 + 0] =
2221  ref_cache[-1 + 8] =
2222  ref_cache[-1 + 16] =
2223  ref_cache[-1 + 24] = LIST_NOT_USED;
2224  }
2225  }
2226  }
2227 
2228  if (!USES_LIST(mb_type, list)) {
2229  fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
2230  AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2231  AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2232  AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2233  AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
2234  return;
2235  }
2236 
2237  {
2238  int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
2239  const int *ref2frm = &h->ref2frm[sl->slice_num & (MAX_SLICES - 1)][list][(MB_MBAFF(sl) ? 20 : 2)];
2240  uint32_t ref01 = (pack16to32(ref2frm[ref[0]], ref2frm[ref[1]]) & 0x00FF00FF) * 0x0101;
2241  uint32_t ref23 = (pack16to32(ref2frm[ref[2]], ref2frm[ref[3]]) & 0x00FF00FF) * 0x0101;
2242  AV_WN32A(&ref_cache[0 * 8], ref01);
2243  AV_WN32A(&ref_cache[1 * 8], ref01);
2244  AV_WN32A(&ref_cache[2 * 8], ref23);
2245  AV_WN32A(&ref_cache[3 * 8], ref23);
2246  }
2247 
2248  {
2249  int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * sl->mb_x + 4 * sl->mb_y * b_stride];
2250  AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
2251  AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
2252  AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
2253  AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
2254  }
2255 }
2256 
2257 /**
2258  * @return non zero if the loop filter can be skipped
2259  */
2260 static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
2261 {
2262  const int mb_xy = sl->mb_xy;
2263  int top_xy, left_xy[LEFT_MBS];
2264  int top_type, left_type[LEFT_MBS];
2265  uint8_t *nnz;
2266  uint8_t *nnz_cache;
2267 
2268  top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
2269 
2270  left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
2271  if (FRAME_MBAFF(h)) {
2272  const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
2273  const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2274  if (sl->mb_y & 1) {
2275  if (left_mb_field_flag != curr_mb_field_flag)
2276  left_xy[LTOP] -= h->mb_stride;
2277  } else {
2278  if (curr_mb_field_flag)
2279  top_xy += h->mb_stride &
2280  (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
2281  if (left_mb_field_flag != curr_mb_field_flag)
2282  left_xy[LBOT] += h->mb_stride;
2283  }
2284  }
2285 
2286  sl->top_mb_xy = top_xy;
2287  sl->left_mb_xy[LTOP] = left_xy[LTOP];
2288  sl->left_mb_xy[LBOT] = left_xy[LBOT];
2289  {
2290  /* For sufficiently low qp, filtering wouldn't do anything.
2291  * This is a conservative estimate: could also check beta_offset
2292  * and more accurate chroma_qp. */
2293  int qp_thresh = sl->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
2294  int qp = h->cur_pic.qscale_table[mb_xy];
2295  if (qp <= qp_thresh &&
2296  (left_xy[LTOP] < 0 ||
2297  ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
2298  (top_xy < 0 ||
2299  ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
2300  if (!FRAME_MBAFF(h))
2301  return 1;
2302  if ((left_xy[LTOP] < 0 ||
2303  ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
2304  (top_xy < h->mb_stride ||
2305  ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
2306  return 1;
2307  }
2308  }
2309 
2310  top_type = h->cur_pic.mb_type[top_xy];
2311  left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
2312  left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
2313  if (sl->deblocking_filter == 2) {
2314  if (h->slice_table[top_xy] != sl->slice_num)
2315  top_type = 0;
2316  if (h->slice_table[left_xy[LBOT]] != sl->slice_num)
2317  left_type[LTOP] = left_type[LBOT] = 0;
2318  } else {
2319  if (h->slice_table[top_xy] == 0xFFFF)
2320  top_type = 0;
2321  if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
2322  left_type[LTOP] = left_type[LBOT] = 0;
2323  }
2324  sl->top_type = top_type;
2325  sl->left_type[LTOP] = left_type[LTOP];
2326  sl->left_type[LBOT] = left_type[LBOT];
2327 
2328  if (IS_INTRA(mb_type))
2329  return 0;
2330 
2331  fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2332  top_type, left_type, mb_xy, 0);
2333  if (sl->list_count == 2)
2334  fill_filter_caches_inter(h, sl, mb_type, top_xy, left_xy,
2335  top_type, left_type, mb_xy, 1);
2336 
2337  nnz = h->non_zero_count[mb_xy];
2338  nnz_cache = sl->non_zero_count_cache;
2339  AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
2340  AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
2341  AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
2342  AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
2343  sl->cbp = h->cbp_table[mb_xy];
2344 
2345  if (top_type) {
2346  nnz = h->non_zero_count[top_xy];
2347  AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
2348  }
2349 
2350  if (left_type[LTOP]) {
2351  nnz = h->non_zero_count[left_xy[LTOP]];
2352  nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
2353  nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
2354  nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
2355  nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
2356  }
2357 
2358  /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
2359  * from what the loop filter needs */
2360  if (!CABAC(h) && h->ps.pps->transform_8x8_mode) {
2361  if (IS_8x8DCT(top_type)) {
2362  nnz_cache[4 + 8 * 0] =
2363  nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
2364  nnz_cache[6 + 8 * 0] =
2365  nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
2366  }
2367  if (IS_8x8DCT(left_type[LTOP])) {
2368  nnz_cache[3 + 8 * 1] =
2369  nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
2370  }
2371  if (IS_8x8DCT(left_type[LBOT])) {
2372  nnz_cache[3 + 8 * 3] =
2373  nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
2374  }
2375 
2376  if (IS_8x8DCT(mb_type)) {
2377  nnz_cache[scan8[0]] =
2378  nnz_cache[scan8[1]] =
2379  nnz_cache[scan8[2]] =
2380  nnz_cache[scan8[3]] = (sl->cbp & 0x1000) >> 12;
2381 
2382  nnz_cache[scan8[0 + 4]] =
2383  nnz_cache[scan8[1 + 4]] =
2384  nnz_cache[scan8[2 + 4]] =
2385  nnz_cache[scan8[3 + 4]] = (sl->cbp & 0x2000) >> 12;
2386 
2387  nnz_cache[scan8[0 + 8]] =
2388  nnz_cache[scan8[1 + 8]] =
2389  nnz_cache[scan8[2 + 8]] =
2390  nnz_cache[scan8[3 + 8]] = (sl->cbp & 0x4000) >> 12;
2391 
2392  nnz_cache[scan8[0 + 12]] =
2393  nnz_cache[scan8[1 + 12]] =
2394  nnz_cache[scan8[2 + 12]] =
2395  nnz_cache[scan8[3 + 12]] = (sl->cbp & 0x8000) >> 12;
2396  }
2397  }
2398 
2399  return 0;
2400 }
2401 
2402 static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
2403 {
2404  uint8_t *dest_y, *dest_cb, *dest_cr;
2405  int linesize, uvlinesize, mb_x, mb_y;
2406  const int end_mb_y = sl->mb_y + FRAME_MBAFF(h);
2407  const int old_slice_type = sl->slice_type;
2408  const int pixel_shift = h->pixel_shift;
2409  const int block_h = 16 >> h->chroma_y_shift;
2410 
2411  if (h->postpone_filter)
2412  return;
2413 
2414  if (sl->deblocking_filter) {
2415  for (mb_x = start_x; mb_x < end_x; mb_x++)
2416  for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
2417  int mb_xy, mb_type;
2418  mb_xy = sl->mb_xy = mb_x + mb_y * h->mb_stride;
2419  mb_type = h->cur_pic.mb_type[mb_xy];
2420 
2421  if (FRAME_MBAFF(h))
2422  sl->mb_mbaff =
2423  sl->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2424 
2425  sl->mb_x = mb_x;
2426  sl->mb_y = mb_y;
2427  dest_y = h->cur_pic.f->data[0] +
2428  ((mb_x << pixel_shift) + mb_y * sl->linesize) * 16;
2429  dest_cb = h->cur_pic.f->data[1] +
2430  (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2431  mb_y * sl->uvlinesize * block_h;
2432  dest_cr = h->cur_pic.f->data[2] +
2433  (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
2434  mb_y * sl->uvlinesize * block_h;
2435  // FIXME simplify above
2436 
2437  if (MB_FIELD(sl)) {
2438  linesize = sl->mb_linesize = sl->linesize * 2;
2439  uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
2440  if (mb_y & 1) { // FIXME move out of this function?
2441  dest_y -= sl->linesize * 15;
2442  dest_cb -= sl->uvlinesize * (block_h - 1);
2443  dest_cr -= sl->uvlinesize * (block_h - 1);
2444  }
2445  } else {
2446  linesize = sl->mb_linesize = sl->linesize;
2447  uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
2448  }
2449  backup_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
2450  uvlinesize, 0);
2451  if (fill_filter_caches(h, sl, mb_type))
2452  continue;
2453  sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, h->cur_pic.qscale_table[mb_xy]);
2454  sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, h->cur_pic.qscale_table[mb_xy]);
2455 
2456  if (FRAME_MBAFF(h)) {
2457  ff_h264_filter_mb(h, sl, mb_x, mb_y, dest_y, dest_cb, dest_cr,
2458  linesize, uvlinesize);
2459  } else {
2460  ff_h264_filter_mb_fast(h, sl, mb_x, mb_y, dest_y, dest_cb,
2461  dest_cr, linesize, uvlinesize);
2462  }
2463  }
2464  }
2465  sl->slice_type = old_slice_type;
2466  sl->mb_x = end_x;
2467  sl->mb_y = end_mb_y - FRAME_MBAFF(h);
2468  sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);
2469  sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);
2470 }
2471 
2472 static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
2473 {
2474  const int mb_xy = sl->mb_x + sl->mb_y * h->mb_stride;
2475  int mb_type = (h->slice_table[mb_xy - 1] == sl->slice_num) ?
2476  h->cur_pic.mb_type[mb_xy - 1] :
2477  (h->slice_table[mb_xy - h->mb_stride] == sl->slice_num) ?
2478  h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
2479  sl->mb_mbaff = sl->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2480 }
2481 
2482 /**
2483  * Draw edges and report progress for the last MB row.
2484  */
2485 static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
2486 {
2487  int top = 16 * (sl->mb_y >> FIELD_PICTURE(h));
2488  int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
2489  int height = 16 << FRAME_MBAFF(h);
2490  int deblock_border = (16 + 4) << FRAME_MBAFF(h);
2491 
2492  if (sl->deblocking_filter) {
2493  if ((top + height) >= pic_height)
2494  height += deblock_border;
2495  top -= deblock_border;
2496  }
2497 
2498  if (top >= pic_height || (top + height) < 0)
2499  return;
2500 
2501  height = FFMIN(height, pic_height - top);
2502  if (top < 0) {
2503  height = top + height;
2504  top = 0;
2505  }
2506 
2507  ff_h264_draw_horiz_band(h, sl, top, height);
2508 
2509  if (h->droppable || sl->h264->slice_ctx[0].er.error_occurred)
2510  return;
2511 
2512  ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
2513  h->picture_structure == PICT_BOTTOM_FIELD);
2514 }
2515 
2516 static void er_add_slice(H264SliceContext *sl,
2517  int startx, int starty,
2518  int endx, int endy, int status)
2519 {
2520  if (!sl->h264->enable_er)
2521  return;
2522 
2523  if (CONFIG_ERROR_RESILIENCE) {
2524  ERContext *er = &sl->h264->slice_ctx[0].er;
2525 
2526  ff_er_add_slice(er, startx, starty, endx, endy, status);
2527  }
2528 }
2529 
2530 static int decode_slice(struct AVCodecContext *avctx, void *arg)
2531 {
2532  H264SliceContext *sl = arg;
2533  const H264Context *h = sl->h264;
2534  int lf_x_start = sl->mb_x;
2535  int orig_deblock = sl->deblocking_filter;
2536  int ret;
2537 
2538  sl->linesize = h->cur_pic_ptr->f->linesize[0];
2539  sl->uvlinesize = h->cur_pic_ptr->f->linesize[1];
2540 
2541  ret = alloc_scratch_buffers(sl, sl->linesize);
2542  if (ret < 0)
2543  return ret;
2544 
2545  sl->mb_skip_run = -1;
2546 
2547  av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * sl->linesize * ((scan8[15] - scan8[0]) >> 3));
2548 
2549  if (h->postpone_filter)
2550  sl->deblocking_filter = 0;
2551 
2552  sl->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
2553  (CONFIG_GRAY && (h->flags & AV_CODEC_FLAG_GRAY));
2554 
2555  if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->slice_ctx[0].er.error_status_table) {
2556  const int start_i = av_clip(sl->resync_mb_x + sl->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
2557  if (start_i) {
2558  int prev_status = h->slice_ctx[0].er.error_status_table[h->slice_ctx[0].er.mb_index2xy[start_i - 1]];
2559  prev_status &= ~ VP_START;
2560  if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
2561  h->slice_ctx[0].er.error_occurred = 1;
2562  }
2563  }
2564 
2565  if (h->ps.pps->cabac) {
2566  /* realign */
2567  align_get_bits(&sl->gb);
2568 
2569  /* init cabac */
2570  ret = ff_init_cabac_decoder(&sl->cabac,
2571  sl->gb.buffer + get_bits_count(&sl->gb) / 8,
2572  (get_bits_left(&sl->gb) + 7) / 8);
2573  if (ret < 0)
2574  return ret;
2575 
2576  ff_h264_init_cabac_states(h, sl);
2577 
2578  for (;;) {
2579  // START_TIMER
2580  int ret, eos;
2581  if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2582  av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2583  sl->next_slice_idx);
2584  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2585  sl->mb_y, ER_MB_ERROR);
2586  return AVERROR_INVALIDDATA;
2587  }
2588 
2589  ret = ff_h264_decode_mb_cabac(h, sl);
2590  // STOP_TIMER("decode_mb_cabac")
2591 
2592  if (ret >= 0)
2593  ff_h264_hl_decode_mb(h, sl);
2594 
2595  // FIXME optimal? or let mb_decode decode 16x32 ?
2596  if (ret >= 0 && FRAME_MBAFF(h)) {
2597  sl->mb_y++;
2598 
2599  ret = ff_h264_decode_mb_cabac(h, sl);
2600 
2601  if (ret >= 0)
2602  ff_h264_hl_decode_mb(h, sl);
2603  sl->mb_y--;
2604  }
2605  eos = get_cabac_terminate(&sl->cabac);
2606 
2607  if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
2608  sl->cabac.bytestream > sl->cabac.bytestream_end + 2) {
2609  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2610  sl->mb_y, ER_MB_END);
2611  if (sl->mb_x >= lf_x_start)
2612  loop_filter(h, sl, lf_x_start, sl->mb_x + 1);
2613  goto finish;
2614  }
2615  if (sl->cabac.bytestream > sl->cabac.bytestream_end + 2 )
2616  av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %"PTRDIFF_SPECIFIER"\n", sl->cabac.bytestream_end - sl->cabac.bytestream);
2617  if (ret < 0 || sl->cabac.bytestream > sl->cabac.bytestream_end + 4) {
2618  av_log(h->avctx, AV_LOG_ERROR,
2619  "error while decoding MB %d %d, bytestream %"PTRDIFF_SPECIFIER"\n",
2620  sl->mb_x, sl->mb_y,
2621  sl->cabac.bytestream_end - sl->cabac.bytestream);
2622  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2623  sl->mb_y, ER_MB_ERROR);
2624  return AVERROR_INVALIDDATA;
2625  }
2626 
2627  if (++sl->mb_x >= h->mb_width) {
2628  loop_filter(h, sl, lf_x_start, sl->mb_x);
2629  sl->mb_x = lf_x_start = 0;
2630  decode_finish_row(h, sl);
2631  ++sl->mb_y;
2632  if (FIELD_OR_MBAFF_PICTURE(h)) {
2633  ++sl->mb_y;
2634  if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2635  predict_field_decoding_flag(h, sl);
2636  }
2637  }
2638 
2639  if (eos || sl->mb_y >= h->mb_height) {
2640  ff_tlog(h->avctx, "slice end %d %d\n",
2641  get_bits_count(&sl->gb), sl->gb.size_in_bits);
2642  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x - 1,
2643  sl->mb_y, ER_MB_END);
2644  if (sl->mb_x > lf_x_start)
2645  loop_filter(h, sl, lf_x_start, sl->mb_x);
2646  goto finish;
2647  }
2648  }
2649  } else {
2650  for (;;) {
2651  int ret;
2652 
2653  if (sl->mb_x + sl->mb_y * h->mb_width >= sl->next_slice_idx) {
2654  av_log(h->avctx, AV_LOG_ERROR, "Slice overlaps with next at %d\n",
2655  sl->next_slice_idx);
2656  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2657  sl->mb_y, ER_MB_ERROR);
2658  return AVERROR_INVALIDDATA;
2659  }
2660 
2661  ret = ff_h264_decode_mb_cavlc(h, sl);
2662 
2663  if (ret >= 0)
2664  ff_h264_hl_decode_mb(h, sl);
2665 
2666  // FIXME optimal? or let mb_decode decode 16x32 ?
2667  if (ret >= 0 && FRAME_MBAFF(h)) {
2668  sl->mb_y++;
2669  ret = ff_h264_decode_mb_cavlc(h, sl);
2670 
2671  if (ret >= 0)
2672  ff_h264_hl_decode_mb(h, sl);
2673  sl->mb_y--;
2674  }
2675 
2676  if (ret < 0) {
2677  av_log(h->avctx, AV_LOG_ERROR,
2678  "error while decoding MB %d %d\n", sl->mb_x, sl->mb_y);
2679  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2680  sl->mb_y, ER_MB_ERROR);
2681  return ret;
2682  }
2683 
2684  if (++sl->mb_x >= h->mb_width) {
2685  loop_filter(h, sl, lf_x_start, sl->mb_x);
2686  sl->mb_x = lf_x_start = 0;
2687  decode_finish_row(h, sl);
2688  ++sl->mb_y;
2689  if (FIELD_OR_MBAFF_PICTURE(h)) {
2690  ++sl->mb_y;
2691  if (FRAME_MBAFF(h) && sl->mb_y < h->mb_height)
2692  predict_field_decoding_flag(h, sl);
2693  }
2694  if (sl->mb_y >= h->mb_height) {
2695  ff_tlog(h->avctx, "slice end %d %d\n",
2696  get_bits_count(&sl->gb), sl->gb.size_in_bits);
2697 
2698  if ( get_bits_left(&sl->gb) == 0
2699  || get_bits_left(&sl->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
2700  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2701  sl->mb_x - 1, sl->mb_y, ER_MB_END);
2702 
2703  goto finish;
2704  } else {
2705  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2706  sl->mb_x, sl->mb_y, ER_MB_END);
2707 
2708  return AVERROR_INVALIDDATA;
2709  }
2710  }
2711  }
2712 
2713  if (get_bits_left(&sl->gb) <= 0 && sl->mb_skip_run <= 0) {
2714  ff_tlog(h->avctx, "slice end %d %d\n",
2715  get_bits_count(&sl->gb), sl->gb.size_in_bits);
2716 
2717  if (get_bits_left(&sl->gb) == 0) {
2718  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y,
2719  sl->mb_x - 1, sl->mb_y, ER_MB_END);
2720  if (sl->mb_x > lf_x_start)
2721  loop_filter(h, sl, lf_x_start, sl->mb_x);
2722 
2723  goto finish;
2724  } else {
2725  er_add_slice(sl, sl->resync_mb_x, sl->resync_mb_y, sl->mb_x,
2726  sl->mb_y, ER_MB_ERROR);
2727 
2728  return AVERROR_INVALIDDATA;
2729  }
2730  }
2731  }
2732  }
2733 
2734 finish:
2735  sl->deblocking_filter = orig_deblock;
2736  return 0;
2737 }
2738 
2739 /**
2740  * Call decode_slice() for each context.
2741  *
2742  * @param h h264 master context
2743  */
2744 int ff_h264_execute_decode_slices(H264Context *h)
2745 {
2746  AVCodecContext *const avctx = h->avctx;
2747  H264SliceContext *sl;
2748  int context_count = h->nb_slice_ctx_queued;
2749  int ret = 0;
2750  int i, j;
2751 
2752  h->slice_ctx[0].next_slice_idx = INT_MAX;
2753 
2754  if (h->avctx->hwaccel || context_count < 1)
2755  return 0;
2756 
2757  av_assert0(context_count && h->slice_ctx[context_count - 1].mb_y < h->mb_height);
2758 
2759  if (context_count == 1) {
2760 
2761  h->slice_ctx[0].next_slice_idx = h->mb_width * h->mb_height;
2762  h->postpone_filter = 0;
2763 
2764  ret = decode_slice(avctx, &h->slice_ctx[0]);
2765  h->mb_y = h->slice_ctx[0].mb_y;
2766  if (ret < 0)
2767  goto finish;
2768  } else {
2769  av_assert0(context_count > 0);
2770  for (i = 0; i < context_count; i++) {
2771  int next_slice_idx = h->mb_width * h->mb_height;
2772  int slice_idx;
2773 
2774  sl = &h->slice_ctx[i];
2775  if (CONFIG_ERROR_RESILIENCE) {
2776  sl->er.error_count = 0;
2777  }
2778 
2779  /* make sure none of those slices overlap */
2780  slice_idx = sl->mb_y * h->mb_width + sl->mb_x;
2781  for (j = 0; j < context_count; j++) {
2782  H264SliceContext *sl2 = &h->slice_ctx[j];
2783  int slice_idx2 = sl2->mb_y * h->mb_width + sl2->mb_x;
2784 
2785  if (i == j || slice_idx2 < slice_idx)
2786  continue;
2787  next_slice_idx = FFMIN(next_slice_idx, slice_idx2);
2788  }
2789  sl->next_slice_idx = next_slice_idx;
2790  }
2791 
2792  avctx->execute(avctx, decode_slice, h->slice_ctx,
2793  NULL, context_count, sizeof(h->slice_ctx[0]));
2794 
2795  /* pull back stuff from slices to master context */
2796  sl = &h->slice_ctx[context_count - 1];
2797  h->mb_y = sl->mb_y;
2798  if (CONFIG_ERROR_RESILIENCE) {
2799  for (i = 1; i < context_count; i++)
2800  h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
2801  }
2802 
2803  if (h->postpone_filter) {
2804  h->postpone_filter = 0;
2805 
2806  for (i = 0; i < context_count; i++) {
2807  int y_end, x_end;
2808 
2809  sl = &h->slice_ctx[i];
2810  y_end = FFMIN(sl->mb_y + 1, h->mb_height);
2811  x_end = (sl->mb_y >= h->mb_height) ? h->mb_width : sl->mb_x;
2812 
2813  for (j = sl->resync_mb_y; j < y_end; j += 1 + FIELD_OR_MBAFF_PICTURE(h)) {
2814  sl->mb_y = j;
2815  loop_filter(h, sl, j > sl->resync_mb_y ? 0 : sl->resync_mb_x,
2816  j == y_end - 1 ? x_end : h->mb_width);
2817  }
2818  }
2819  }
2820  }
2821 
2822 finish:
2823  h->nb_slice_ctx_queued = 0;
2824  return ret;
2825 }
SPS::chroma_format_idc
int chroma_format_idc
Definition: h264_ps.h:48
AV_STEREO3D_FLAG_INVERT
#define AV_STEREO3D_FLAG_INVERT
Inverted views, Right/Bottom represents the left view.
Definition: stereo3d.h:167
SPS::video_signal_type_present_flag
int video_signal_type_present_flag
Definition: h264_ps.h:74
H264SliceContext::h264
struct H264Context * h264
Definition: h264dec.h:178
AV_EF_AGGRESSIVE
#define AV_EF_AGGRESSIVE
consider things that a sane encoder should not do as an error
Definition: avcodec.h:2673
ff_tlog
#define ff_tlog(ctx,...)
Definition: internal.h:75
ff_videodsp_init
av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
Definition: videodsp.c:38
NULL
#define NULL
Definition: coverity.c:32
ff_thread_can_start_frame
int ff_thread_can_start_frame(AVCodecContext *avctx)
Definition: pthread_frame.c:872
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:1541
AVCodecContext::framerate
AVRational framerate
Definition: avcodec.h:3055
AVDISCARD_NONKEY
discard all frames except keyframes
Definition: avcodec.h:801
H264Context::nb_mmco
int nb_mmco
Definition: h264dec.h:474
H264Context::workaround_bugs
int workaround_bugs
Definition: h264dec.h:367
H264Picture::long_ref
int long_ref
1->long term reference 0->short term reference
Definition: h264dec.h:154
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
H264Picture::sei_recovery_frame_cnt
int sei_recovery_frame_cnt
Definition: h264dec.h:163
ff_h264_queue_decode_slice
int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
Submit a slice for decoding.
Definition: h264_slice.c:2033
H264Context::poc
H264POCContext poc
Definition: h264dec.h:460
H264Context::mb_num
int mb_num
Definition: h264dec.h:437
av_buffer_unref
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
H264Context::mb_aff_frame
int mb_aff_frame
Definition: h264dec.h:406
H264SEIRecoveryPoint::recovery_frame_cnt
int recovery_frame_cnt
recovery_frame_cnt
Definition: h264_sei.h:113
h
h
Definition: vp9dsp_template.c:2038
H264SliceContext::mv_cache
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264dec.h:299
AVStereo3D::view
enum AVStereo3DView view
Determines which views are packed.
Definition: stereo3d.h:190
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:389
get_se_golomb
static int get_se_golomb(GetBitContext *gb)
read signed exp golomb code.
Definition: golomb.h:237
H264SliceContext::edge_emu_buffer_allocated
int edge_emu_buffer_allocated
Definition: h264dec.h:287
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1720
decode_finish_row
static void decode_finish_row(const H264Context *h, H264SliceContext *sl)
Draw edges and report progress for the last MB row.
Definition: h264_slice.c:2485
fmt
const char * fmt
Definition: avisynth_c.h:769
H264Context::first_field
int first_field
Definition: h264dec.h:408
H264Context::field_scan8x8_q0
uint8_t field_scan8x8_q0[64]
Definition: h264dec.h:431
AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
imgutils.h
misc image utilities
get_bits
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:381
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
ER_MB_END
#define ER_MB_END
Definition: error_resilience.h:39
ThreadFrame::f
AVFrame * f
Definition: thread.h:35
PPS::weighted_bipred_idc
int weighted_bipred_idc
Definition: h264_ps.h:117
ff_h264_build_ref_list
int ff_h264_build_ref_list(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:299
H264SliceContext::left_mb_xy
int left_mb_xy[LEFT_MBS]
Definition: h264dec.h:211
PPS::chroma_qp_index_offset
int chroma_qp_index_offset[2]
Definition: h264_ps.h:120
H264ParamSets::sps_list
AVBufferRef * sps_list[MAX_SPS_COUNT]
Definition: h264_ps.h:139
CABACContext::bytestream_end
const uint8_t * bytestream_end
Definition: cabac.h:49
get_chroma_qp
static av_always_inline int get_chroma_qp(const PPS *pps, int t, int qscale)
Get the chroma qp.
Definition: h264dec.h:681
AVFrame::buf
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:410
AV_PIX_FMT_VIDEOTOOLBOX
hardware decoding through Videotoolbox
Definition: pixfmt.h:282
H264Context::h264chroma
H264ChromaContext h264chroma
Definition: h264dec.h:342
H264Context::cbp_table
uint16_t * cbp_table
Definition: h264dec.h:413
H264PredWeightTable::luma_weight_flag
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264_parse.h:35
H264Context::mmco
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264dec.h:473
implicit_weight_table
static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, int field)
Initialize implicit_weight table.
Definition: h264_slice.c:665
SPS
Sequence parameter set.
Definition: h264_ps.h:44
AVCodecContext::color_range
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2163
H264Context::mb_y
int mb_y
Definition: h264dec.h:434
H264Context::coded_picture_number
int coded_picture_number
Definition: h264dec.h:363
SPS::bitstream_restriction_flag
int bitstream_restriction_flag
Definition: h264_ps.h:85
AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
H264SEIContext::alternative_transfer
H264SEIAlternativeTransfer alternative_transfer
Definition: h264_sei.h:166
AVRational::num
int num
Numerator.
Definition: rational.h:59
H264Picture::mb_type_buf
AVBufferRef * mb_type_buf
Definition: h264dec.h:138
AVFrame::repeat_pict
int repeat_pict
When decoding, this signals how much the picture must be delayed.
Definition: frame.h:360
H264SliceContext::bipred_scratchpad_allocated
int bipred_scratchpad_allocated
Definition: h264dec.h:286
AV_STEREO3D_SIDEBYSIDE_QUINCUNX
Views are next to each other, but when upscaling apply a checkerboard pattern.
Definition: stereo3d.h:117
DELAYED_PIC_REF
#define DELAYED_PIC_REF
Value of Picture.reference when Picture is not a reference picture, but is held for delayed output...
Definition: diracdec.c:67
AV_STEREO3D_VIEW_RIGHT
Frame contains only the right view.
Definition: stereo3d.h:161
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:395
VP_START
#define VP_START
< current MB is the first after a resync marker
Definition: error_resilience.h:30
H264Context::mb_type_pool
AVBufferPool * mb_type_pool
Definition: h264dec.h:550
ff_h264_init_poc
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
H264Context::chroma_x_shift
int chroma_x_shift
Definition: h264dec.h:360
GetBitContext::buffer
const uint8_t * buffer
Definition: get_bits.h:62
PPS
Picture parameter set.
Definition: h264_ps.h:109
AVCodecContext::sample_aspect_ratio
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:1911
H264Picture::motion_val
int16_t(*[2] motion_val)[2]
Definition: h264dec.h:136
H264Context::flags
int flags
Definition: h264dec.h:366
ff_h264_flush_change
void ff_h264_flush_change(H264Context *h)
Definition: h264dec.c:483
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1742
SPS::frame_mbs_only_flag
int frame_mbs_only_flag
Definition: h264_ps.h:62
H264Context::mb_height
int mb_height
Definition: h264dec.h:435
H264Context::delayed_pic
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264dec.h:465
H264Context::is_avc
int is_avc
Used to parse AVC variant of H.264.
Definition: h264dec.h:450
ff_h264_pred_init
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
H264Context::ref_index_pool
AVBufferPool * ref_index_pool
Definition: h264dec.h:552
H264Context::height_from_caller
int height_from_caller
Definition: h264dec.h:543
H264Context::zigzag_scan8x8_cavlc
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264dec.h:423
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:383
ff_h264chroma_init
av_cold void ff_h264chroma_init(H264ChromaContext *c, int bit_depth)
Definition: h264chroma.c:41
ERContext::last_pic
ERPicture last_pic
Definition: error_resilience.h:74
H264SEIContext::display_orientation
H264SEIDisplayOrientation display_orientation
Definition: h264_sei.h:164
mpegvideo.h
mpegvideo header.
H264SEIFramePacking::current_frame_is_frame0_flag
int current_frame_is_frame0_flag
Definition: h264_sei.h:129
H264SliceContext::next_slice_idx
int next_slice_idx
Definition: h264dec.h:236
zigzag_scan8x8_cavlc
static const uint8_t zigzag_scan8x8_cavlc[64+1]
Definition: h264_slice.c:97
H264_SEI_PIC_STRUCT_FRAME_DOUBLING
7: frame doubling
Definition: h264_sei.h:53
H264Context
H264Context.
Definition: h264dec.h:337
AVDISCARD_NONINTRA
discard all non intra frames
Definition: avcodec.h:800
AVDISCARD_ALL
discard all
Definition: avcodec.h:802
H264Picture::f
AVFrame * f
Definition: h264dec.h:129
AV_STEREO3D_SIDEBYSIDE
Views are next to each other.
Definition: stereo3d.h:67
AVFrame::crop_bottom
size_t crop_bottom
Definition: frame.h:578
AVCodecContext::bits_per_raw_sample
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2756
SPS::num_units_in_tick
uint32_t num_units_in_tick
Definition: h264_ps.h:81
field_scan
static const uint8_t field_scan[16+1]
Definition: h264_slice.c:51
ff_thread_await_progress
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
Definition: pthread_frame.c:580
AVCodecContext::hwaccel
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2689
H264Context::long_ref
H264Picture * long_ref[32]
Definition: h264dec.h:464
src
#define src
Definition: vp8dsp.c:254
AVCodecContext::profile
int profile
profile
Definition: avcodec.h:2858
H264Context::picture_structure
int picture_structure
Definition: h264dec.h:407
AVCOL_SPC_RGB
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
Definition: pixfmt.h:487
AV_WN32A
#define AV_WN32A(p, v)
Definition: intreadwrite.h:538
AV_COPY32
#define AV_COPY32(d, s)
Definition: intreadwrite.h:586
av_display_matrix_flip
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
H264SliceContext::ref_count
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264dec.h:267
IN_RANGE
#define IN_RANGE(a, b, size)
Definition: h264_slice.c:265
H264_SEI_PIC_STRUCT_FRAME
0: frame
Definition: h264_sei.h:46
REBASE_PICTURE
#define REBASE_PICTURE(pic, new_ctx, old_ctx)
Definition: h264_slice.c:267
H264SliceContext::mmco
MMCO mmco[MAX_MMCO_COUNT]
Definition: h264dec.h:322
av_display_rotation_set
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
AV_STEREO3D_VIEW_LEFT
Frame contains only the left view.
Definition: stereo3d.h:156
ff_h264_update_thread_context
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:288
AV_PICTURE_TYPE_SI
Switching Intra.
Definition: avutil.h:278
H264Context::setup_finished
int setup_finished
Definition: h264dec.h:534
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:2990
ff_h264_execute_decode_slices
int ff_h264_execute_decode_slices(H264Context *h)
Call decode_slice() for each context.
Definition: h264_slice.c:2744
H264Context::sei
H264SEIContext sei
Definition: h264dec.h:547
H264SEIA53Caption::buf_ref
AVBufferRef * buf_ref
Definition: h264_sei.h:98
SPS::crop_top
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264_ps.h:70
USES_LIST
#define USES_LIST(a, list)
Definition: mpegutils.h:99
ff_color_frame
void ff_color_frame(AVFrame *frame, const int color[4])
Definition: utils.c:408
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
CABACContext::bytestream
const uint8_t * bytestream
Definition: cabac.h:48
H264Context::ref2frm
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:553
PPS::deblocking_filter_parameters_present
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264_ps.h:121
cb
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:112
avpriv_request_sample
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
H264ParamSets::pps
const PPS * pps
Definition: h264_ps.h:145
H264_SEI_PIC_STRUCT_BOTTOM_TOP
4: bottom field, top field, in that order
Definition: h264_sei.h:50
non_j_pixfmt
static enum AVPixelFormat non_j_pixfmt(enum AVPixelFormat a)
Definition: h264_slice.c:1002
uint8_t
uint8_t
Definition: audio_convert.c:194
SPS::full_range
int full_range
Definition: h264_ps.h:75
SPS::crop_left
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264_ps.h:68
SPS::gaps_in_frame_num_allowed_flag
int gaps_in_frame_num_allowed_flag
Definition: h264_ps.h:58
MB_MBAFF
#define MB_MBAFF(h)
Definition: h264dec.h:71
H264SliceContext::slice_alpha_c0_offset
int slice_alpha_c0_offset
Definition: h264dec.h:194
AVStereo3D
Stereo 3D type: this structure describes how two videos are packed within a single video surface...
Definition: stereo3d.h:176
H264Ref::poc
int poc
Definition: h264dec.h:171
ff_h264_set_erpic
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:131
H264Picture::field_picture
int field_picture
whether or not picture was encoded in separate fields
Definition: h264dec.h:158
SPS::bit_depth_chroma
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264_ps.h:99
ff_h264_hl_decode_mb
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:799
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:2614
AVFrame::crop_left
size_t crop_left
Definition: frame.h:579
SPS::color_primaries
enum AVColorPrimaries color_primaries
Definition: h264_ps.h:77
H264Picture::poc
int poc
frame POC
Definition: h264dec.h:148
H264POCContext::frame_num_offset
int frame_num_offset
for POC type 2
Definition: h264_parse.h:51
H264PredWeightTable::chroma_weight_flag
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264_parse.h:36
H264_SEI_FPA_TYPE_INTERLEAVE_COLUMN
Definition: h264_sei.h:62
thread.h
Multithreading support functions.
ER_MB_ERROR
#define ER_MB_ERROR
Definition: error_resilience.h:38
PPS::cabac
int cabac
entropy_coding_mode_flag
Definition: h264_ps.h:111
MB_FIELD
#define MB_FIELD(sl)
Definition: h264dec.h:72
from
const char * from
Definition: jacosubdec.c:65
SPS::crop_right
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264_ps.h:69
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:394
H264SliceContext::top_borders
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264dec.h:285
H264Picture::invalid_gap
int invalid_gap
Definition: h264dec.h:162
ERContext::cur_pic
ERPicture cur_pic
Definition: error_resilience.h:73
H264Context::frame_recovered
int frame_recovered
Initial frame has been completely recovered.
Definition: h264dec.h:524
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:180
H264Context::height
int height
Definition: h264dec.h:359
H264_SEI_FPA_TYPE_INTERLEAVE_ROW
Definition: h264_sei.h:63
PICT_BOTTOM_FIELD
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
height
#define height
MAX_PPS_COUNT
#define MAX_PPS_COUNT
Definition: h264_ps.h:38
pt
int pt
Definition: rtp.c:35
SPS::transform_bypass
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264_ps.h:49
finish
static void finish(void)
Definition: movenc.c:345
H264_SEI_PIC_STRUCT_FRAME_TRIPLING
8: frame tripling
Definition: h264_sei.h:54
get_bits_count
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
ff_h264_filter_mb
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)
Definition: h264_loopfilter.c:718
av_get_picture_type_char
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:88
AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
ER_MV_END
#define ER_MV_END
Definition: error_resilience.h:36
ff_set_sar
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:119
PPS::redundant_pic_cnt_present
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264_ps.h:123
H264SliceContext::picture_structure
int picture_structure
Definition: h264dec.h:240
H264Context::chroma_y_shift
int chroma_y_shift
Definition: h264dec.h:360
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:365
AV_STEREO3D_2D
Video is not stereoscopic (and metadata has to be there).
Definition: stereo3d.h:55
H264_SEI_PIC_STRUCT_TOP_FIELD
1: top field
Definition: h264_sei.h:47
H264Picture::qscale_table_buf
AVBufferRef * qscale_table_buf
Definition: h264dec.h:132
h264_export_frame_props
static int h264_export_frame_props(H264Context *h)
Definition: h264_slice.c:1132
av_reduce
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
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:384
H264Ref::parent
H264Picture * parent
Definition: h264dec.h:174
FRAME_RECOVERED_SEI
#define FRAME_RECOVERED_SEI
Sufficient number of frames have been decoded since a SEI recovery point, so all the following frames...
Definition: h264dec.h:522
H264SEIContext::afd
H264SEIAFD afd
Definition: h264_sei.h:158
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:869
timer.h
high precision timer, useful to profile code
H264Picture::recovered
int recovered
picture at IDR or recovery point + recovery count
Definition: h264dec.h:161
AV_FRAME_DATA_AFD
Active Format Description data consisting of a single byte as specified in ETSI TS 101 154 using AVAc...
Definition: frame.h:89
AV_COPY64
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
H264_SEI_PIC_STRUCT_BOTTOM_FIELD
2: bottom field
Definition: h264_sei.h:48
ff_h264_decode_ref_pic_list_reordering
int ff_h264_decode_ref_pic_list_reordering(H264SliceContext *sl, void *logctx)
Definition: h264_refs.c:421
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:48
H264SliceContext::chroma_qp
int chroma_qp[2]
Definition: h264dec.h:188
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
H264Context::last_pocs
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264dec.h:466
to
const char * to
Definition: webvttdec.c:34
ff_h264_direct_ref_list_init
void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:121
H264Context::width
int width
Definition: h264dec.h:359
h264_frame_start
static int h264_frame_start(H264Context *h)
Definition: h264_slice.c:456
h264.h
H.264 common definitions.
ff_h264_draw_horiz_band
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264dec.c:102
U
#define U(x)
Definition: vp56_arith.h:37
HWACCEL_MAX
#define HWACCEL_MAX
get_bits_left
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:814
h264_ps.h
H.264 parameter set handling.
H264Context::DPB
H264Picture DPB[H264_MAX_PICTURE_COUNT]
Definition: h264dec.h:345
SPS::color_trc
enum AVColorTransferCharacteristic color_trc
Definition: h264_ps.h:78
SPS::mb_aff
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264_ps.h:63
H264Context::hpc
H264PredContext hpc
Definition: h264dec.h:386
H264ParamSets::sps_ref
AVBufferRef * sps_ref
Definition: h264_ps.h:143
H264PredWeightTable::chroma_log2_weight_denom
int chroma_log2_weight_denom
Definition: h264_parse.h:34
AVFrame::width
int width
Definition: frame.h:276
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1822
td
#define td
Definition: regdef.h:70
AVStereo3D::flags
int flags
Additional information about the frame packing.
Definition: stereo3d.h:185
get_ue_golomb
static int get_ue_golomb(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to 8190.
Definition: golomb.h:53
alloc_scratch_buffers
static int alloc_scratch_buffers(H264SliceContext *sl, int linesize)
Definition: h264_slice.c:129
SPS::poc_type
int poc_type
pic_order_cnt_type
Definition: h264_ps.h:51
ff_er_add_slice
void ff_er_add_slice(ERContext *s, int startx, int starty, int endx, int endy, int status)
Add a slice.
Definition: error_resilience.c:830
H264Context::context_initialized
int context_initialized
Definition: h264dec.h:365
PTRDIFF_SPECIFIER
#define PTRDIFF_SPECIFIER
Definition: internal.h:261
H264SliceContext::er
ERContext er
Definition: h264dec.h:180
H264Context::nal_unit_type
int nal_unit_type
Definition: h264dec.h:443
ff_h264_decode_ref_pic_marking
int ff_h264_decode_ref_pic_marking(H264SliceContext *sl, GetBitContext *gb, const H2645NAL *nal, void *logctx)
Definition: h264_refs.c:832
ff_h264_get_profile
int ff_h264_get_profile(const SPS *sps)
Compute profile from profile_idc and constraint_set?_flags.
Definition: h264_parse.c:510
SPS::num_reorder_frames
int num_reorder_frames
Definition: h264_ps.h:86
AVDISCARD_BIDIR
discard all bidirectional frames
Definition: avcodec.h:799
AVERROR
#define AVERROR(e)
Definition: error.h:43
H264SEIFramePacking::arrangement_type
H264_SEI_FpaType arrangement_type
Definition: h264_sei.h:125
H264Picture::hwaccel_picture_private
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264dec.h:142
av_pix_fmt_get_chroma_sub_sample
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:2434
display.h
Display matrix.
AV_STEREO3D_LINES
Views are packed per line, as if interlaced.
Definition: stereo3d.h:129
AVCodecContext::active_thread_type
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2803
field_scan8x8
static const uint8_t field_scan8x8[64+1]
Definition: h264_slice.c:58
ff_zigzag_scan
const uint8_t ff_zigzag_scan[16+1]
Definition: mathtables.c:109
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
AV_FRAME_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
FIELD_PICTURE
#define FIELD_PICTURE(h)
Definition: h264dec.h:74
H264Context::picture_idr
int picture_idr
Definition: h264dec.h:378
init_dimensions
static int init_dimensions(H264Context *h)
Definition: h264_slice.c:876
arg
const char * arg
Definition: jacosubdec.c:66
H264SliceContext::deblocking_filter
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264dec.h:193
H264Context::mvd_table
uint8_t(*[2] mvd_table)[2]
Definition: h264dec.h:417
H264Context::prev_interlaced_frame
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264dec.h:498
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1612
fill_filter_caches
static int fill_filter_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264_slice.c:2260
width
uint16_t width
Definition: gdv.c:47
H264Picture::tf
ThreadFrame tf
Definition: h264dec.h:130
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
PPS::weighted_pred
int weighted_pred
weighted_pred_flag
Definition: h264_ps.h:116
PICT_TOP_FIELD
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
H264Context::h264qpel
H264QpelContext h264qpel
Definition: h264dec.h:343
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:382
H264SliceContext::direct_spatial_mv_pred
int direct_spatial_mv_pred
Definition: h264dec.h:251
H264SEIContext::unregistered
H264SEIUnregistered unregistered
Definition: h264_sei.h:160
H264Picture::frame_num
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264dec.h:149
ff_h264_golomb_to_pict_type
const uint8_t ff_h264_golomb_to_pict_type[5]
Definition: h264data.c:37
MAX_SLICES
#define MAX_SLICES
Definition: dxva2_hevc.c:29
H264Context::valid_recovery_point
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264dec.h:503
count
GLsizei count
Definition: opengl_enc.c:109
ff_h264_get_slice_type
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:2158
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
H264_SEI_FPA_TYPE_2D
Definition: h264_sei.h:67
fail
#define fail()
Definition: checkasm.h:117
H264SEIAFD::active_format_description
uint8_t active_format_description
Definition: h264_sei.h:94
SPS::delta_pic_order_always_zero_flag
int delta_pic_order_always_zero_flag
Definition: h264_ps.h:53
av_image_copy
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:387
ERContext::mb_index2xy
int * mb_index2xy
Definition: error_resilience.h:58
H264SliceContext::slice_type_nos
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264dec.h:184
H264Context::zigzag_scan8x8
uint8_t zigzag_scan8x8[64]
Definition: h264dec.h:422
H264Picture::hwaccel_priv_buf
AVBufferRef * hwaccel_priv_buf
Definition: h264dec.h:141
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
av_stereo3d_create_side_data
AVStereo3D * av_stereo3d_create_side_data(AVFrame *frame)
Allocate a complete AVFrameSideData and add it to the frame.
Definition: stereo3d.c:33
H264Context::crop_bottom
int crop_bottom
Definition: h264dec.h:383
ERContext::error_status_table
uint8_t * error_status_table
Definition: error_resilience.h:66
AVFrame::crop_top
size_t crop_top
Definition: frame.h:577
AV_STEREO3D_FRAMESEQUENCE
Views are alternated temporally.
Definition: stereo3d.h:92
av_fast_malloc
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:488
ff_h264_parse_ref_count
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
H264Context::nal_length_size
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264dec.h:451
rectangle.h
useful rectangle filling function
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:377
AVCodecContext::refs
int refs
number of reference frames
Definition: avcodec.h:2116
H264POCContext::prev_poc_msb
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264_parse.h:49
H264Picture::motion_val_buf
AVBufferRef * motion_val_buf[2]
Definition: h264dec.h:135
SPS::ref_frame_count
int ref_frame_count
num_ref_frames
Definition: h264_ps.h:57
AVCodec::pix_fmts
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:3444
AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:301
AVFrame::flags
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:456
H264SEIPictureTiming::pic_struct
H264_SEI_PicStructType pic_struct
Definition: h264_sei.h:72
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2657
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
H264Context::x264_build
int x264_build
Definition: h264dec.h:368
H264SEIPictureTiming::ct_type
int ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264_sei.h:79
av_fast_mallocz
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:493
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
H264Context::slice_table
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264dec.h:403
copy_picture_range
static void copy_picture_range(H264Picture **to, H264Picture **from, int count, H264Context *new_base, H264Context *old_base)
Definition: h264_slice.c:272
h264_field_start
static int h264_field_start(H264Context *h, const H264SliceContext *sl, const H2645NAL *nal, int first_slice)
Definition: h264_slice.c:1402
H264Context::field_scan8x8_cavlc
uint8_t field_scan8x8_cavlc[64]
Definition: h264dec.h:426
IS_DIRECT
#define IS_DIRECT(a)
Definition: mpegutils.h:84
H264SliceContext::cabac
CABACContext cabac
Cabac.
Definition: h264dec.h:318
SPS::colour_description_present_flag
int colour_description_present_flag
Definition: h264_ps.h:76
H264SliceContext::first_mb_addr
unsigned int first_mb_addr
Definition: h264dec.h:234
H264Picture::reference
int reference
Definition: h264dec.h:160
er_add_slice
static void er_add_slice(H264SliceContext *sl, int startx, int starty, int endx, int endy, int status)
Definition: h264_slice.c:2516
LEFT_MBS
#define LEFT_MBS
Definition: h264dec.h:75
AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
SPS::sar
AVRational sar
Definition: h264_ps.h:73
av_frame_new_side_data_from_buf
AVFrameSideData * av_frame_new_side_data_from_buf(AVFrame *frame, enum AVFrameSideDataType type, AVBufferRef *buf)
Add a new side data to a frame from an existing AVBufferRef.
Definition: frame.c:688
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:1705
H264SliceContext::redundant_pic_count
int redundant_pic_count
Definition: h264dec.h:244
H264Context::nb_slice_ctx
int nb_slice_ctx
Definition: h264dec.h:351
w
uint8_t w
Definition: llviddspenc.c:38
H264SliceContext::pwt
H264PredWeightTable pwt
Definition: h264dec.h:197
H264Context::long_ref_count
int long_ref_count
number of actual long term references
Definition: h264dec.h:478
ER_DC_END
#define ER_DC_END
Definition: error_resilience.h:35
H264Picture::mb_type
uint32_t * mb_type
Definition: h264dec.h:139
AV_FRAME_FLAG_CORRUPT
#define AV_FRAME_FLAG_CORRUPT
The frame data may be corrupted, e.g.
Definition: frame.h:444
ff_thread_report_progress
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
Definition: pthread_frame.c:557
h264_init_ps
static int h264_init_ps(H264Context *h, const H264SliceContext *sl, int first_slice)
Definition: h264_slice.c:1013
GetBitContext::size_in_bits
int size_in_bits
Definition: get_bits.h:68
int32_t
int32_t
Definition: audio_convert.c:194
ff_init_cabac_decoder
int ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size)
Definition: cabac.c:177
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2142
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
FF_THREAD_SLICE
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:2796
cabac_functions.h
Context Adaptive Binary Arithmetic Coder inline functions.
AVCodecContext::level
int level
level
Definition: avcodec.h:2968
PPS::init_qp
int init_qp
pic_init_qp_minus26 + 26
Definition: h264_ps.h:118
h264dec.h
H.264 / AVC / MPEG-4 part10 codec.
H264Context::mmco_reset
int mmco_reset
Definition: h264dec.h:475
H264Context::slice_ctx
H264SliceContext * slice_ctx
Definition: h264dec.h:350
SPS::direct_8x8_inference_flag
int direct_8x8_inference_flag
Definition: h264_ps.h:64
h264_select_output_frame
static int h264_select_output_frame(H264Context *h)
Definition: h264_slice.c:1299
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:2668
H264Ref::reference
int reference
Definition: h264dec.h:170
AVCodecContext::ticks_per_frame
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:1664
H264SliceContext::top_borders_allocated
int top_borders_allocated[2]
Definition: h264dec.h:288
fill_rectangle
static void fill_rectangle(int x, int y, int w, int h)
Definition: ffplay.c:823
FIELD_OR_MBAFF_PICTURE
#define FIELD_OR_MBAFF_PICTURE(h)
Definition: h264dec.h:91
H2645NAL::ref_idc
int ref_idc
H.264 only, nal_ref_idc.
Definition: h2645_parse.h:64
init_scan_tables
static void init_scan_tables(H264Context *h)
initialize scan tables
Definition: h264_slice.c:729
get_cabac_terminate
static int av_unused get_cabac_terminate(CABACContext *c)
Definition: cabac_functions.h:178
H264SEIFramePacking::quincunx_sampling_flag
int quincunx_sampling_flag
Definition: h264_sei.h:128
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:378
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:397
AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:235
H2645NAL::type
int type
NAL unit type.
Definition: h2645_parse.h:51
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:36
AVCOL_RANGE_JPEG
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:512
init_table_pools
static int init_table_pools(H264Context *h)
Definition: h264_slice.c:161
H264SliceContext::edge_emu_buffer
uint8_t * edge_emu_buffer
Definition: h264dec.h:284
get_ue_golomb_long
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:103
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
PPS::pic_order_present
int pic_order_present
pic_order_present_flag
Definition: h264_ps.h:112
H264Context::zigzag_scan_q0
uint8_t zigzag_scan_q0[16]
Definition: h264dec.h:427
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:291
H264Context::bit_depth_luma
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264dec.h:453
H264Context::chroma_format_idc
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264dec.h:454
H264Context::vdsp
VideoDSPContext vdsp
Definition: h264dec.h:340
SPS::timing_info_present_flag
int timing_info_present_flag
Definition: h264_ps.h:80
AVFrame::coded_picture_number
int coded_picture_number
picture number in bitstream order
Definition: frame.h:332
AVStereo3D::type
enum AVStereo3DType type
How views are packed within the video.
Definition: stereo3d.h:180
H264Context::mb_stride
int mb_stride
Definition: h264dec.h:436
AV_STEREO3D_CHECKERBOARD
Views are packed in a checkerboard-like structure per pixel.
Definition: stereo3d.h:104
H264Context::postpone_filter
int postpone_filter
Definition: h264dec.h:373
IS_INTERLACED
#define IS_INTERLACED(a)
Definition: mpegutils.h:83
H264Context::avctx
AVCodecContext * avctx
Definition: h264dec.h:339
H264Context::zigzag_scan8x8_q0
uint8_t zigzag_scan8x8_q0[64]
Definition: h264dec.h:428
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:387
H264_SEI_PIC_STRUCT_TOP_BOTTOM_TOP
5: top field, bottom field, top field repeated, in that order
Definition: h264_sei.h:51
avcodec.h
Libavcodec external API header.
MAX_DELAYED_PIC_COUNT
#define MAX_DELAYED_PIC_COUNT
Definition: h264dec.h:56
AV_STEREO3D_TOPBOTTOM
Views are on top of each other.
Definition: stereo3d.h:79
H264SliceContext::last_qscale_diff
int last_qscale_diff
Definition: h264dec.h:190
AV_FRAME_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
H264ParamSets::pps_list
AVBufferRef * pps_list[MAX_PPS_COUNT]
Definition: h264_ps.h:140
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:1542
get_ue_golomb_31
static int get_ue_golomb_31(GetBitContext *gb)
read unsigned exp golomb code, constraint to a max of 31.
Definition: golomb.h:118
H264Context::crop_left
int crop_left
Definition: h264dec.h:380
H264POCContext::delta_poc_bottom
int delta_poc_bottom
Definition: h264_parse.h:46
ERContext::next_pic
ERPicture next_pic
Definition: error_resilience.h:75
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
H264Context::short_ref
H264Picture * short_ref[32]
Definition: h264dec.h:463
H264Context::next_outputed_poc
int next_outputed_poc
Definition: h264dec.h:468
ff_h264_decode_mb_cabac
int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cabac.c:1914
H264Context::explicit_ref_marking
int explicit_ref_marking
Definition: h264dec.h:476
AV_CODEC_FLAG2_FAST
#define AV_CODEC_FLAG2_FAST
Allow non spec compliant speedup tricks.
Definition: avcodec.h:909
H264Picture::field_poc
int field_poc[2]
top/bottom POC
Definition: h264dec.h:147
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:2613
ff_thread_get_buffer
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
Definition: pthread_frame.c:964
error_resilience.h
H264Context::recovery_frame
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264dec.h:511
AVCodecContext
main external API structure.
Definition: avcodec.h:1532
H264SliceContext::qp_thresh
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264dec.h:189
H264SliceContext::explicit_ref_marking
int explicit_ref_marking
Definition: h264dec.h:324
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:89
fp
#define fp
Definition: regdef.h:44
AVFrameSideData::data
uint8_t * data
Definition: frame.h:182
h264_slice_header_parse
static int h264_slice_header_parse(const H264Context *h, H264SliceContext *sl, const H2645NAL *nal)
Definition: h264_slice.c:1680
H264SEIContext::a53_caption
H264SEIA53Caption a53_caption
Definition: h264_sei.h:159
buf
void * buf
Definition: avisynth_c.h:690
H264PredWeightTable::implicit_weight
int implicit_weight[48][48][2]
Definition: h264_parse.h:40
AVFrame::crop_right
size_t crop_right
Definition: frame.h:580
H264Picture::qscale_table
int8_t * qscale_table
Definition: h264dec.h:133
scan8
static const uint8_t scan8[16 *3+3]
Definition: h264dec.h:644
CABAC
#define CABAC(h)
Definition: h264_cabac.c:28
av_buffer_allocz
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
AVBufferRef::buffer
AVBuffer * buffer
Definition: buffer.h:82
field_scan8x8_cavlc
static const uint8_t field_scan8x8_cavlc[64+1]
Definition: h264_slice.c:77
get_bits1
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:487
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:379
ThreadFrame::owner
AVCodecContext * owner[2]
Definition: thread.h:36
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:1720
AV_PICTURE_TYPE_SP
Switching Predicted.
Definition: avutil.h:279
H264POCContext::prev_frame_num
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264_parse.h:53
FF_CODEC_PROPERTY_CLOSED_CAPTIONS
#define FF_CODEC_PROPERTY_CLOSED_CAPTIONS
Definition: avcodec.h:3179
pps
static int FUNC() pps(CodedBitstreamContext *ctx, RWContext *rw, H264RawPPS *current)
Definition: cbs_h264_syntax_template.c:356
av_frame_new_side_data
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:720
H264SliceContext::non_zero_count_cache
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264dec.h:294
av_buffer_pool_uninit
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:275
FRAME_MBAFF
#define FRAME_MBAFF(h)
Definition: h264dec.h:73
AVCodecContext::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2156
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2149
LBOT
#define LBOT
Definition: h264dec.h:77
AV_PIX_FMT_VDPAU
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:197
pack16to32
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264dec.h:660
H264Picture::ref_index
int8_t * ref_index[2]
Definition: h264dec.h:145
ff_h264_ref_picture
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:66
AVBuffer
A reference counted buffer type.
Definition: buffer_internal.h:37
H264Context::pixel_shift
int pixel_shift
0 for 8-bit H.264, 1 for high-bit-depth H.264
Definition: h264dec.h:356
H264Picture::mmco_reset
int mmco_reset
MMCO_RESET set this 1.
Definition: h264dec.h:150
H264SEIFramePacking::content_interpretation_type
int content_interpretation_type
Definition: h264_sei.h:127
H264Context::cur_pic_ptr
H264Picture * cur_pic_ptr
Definition: h264dec.h:346
LIST_NOT_USED
#define LIST_NOT_USED
Definition: h264dec.h:390
ff_zigzag_direct
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
H264SliceContext::mb_uvlinesize
ptrdiff_t mb_uvlinesize
Definition: h264dec.h:228
h264_slice_header_init
static int h264_slice_header_init(H264Context *h)
Definition: h264_slice.c:918
sps
static int FUNC() sps(CodedBitstreamContext *ctx, RWContext *rw, H264RawSPS *current)
Definition: cbs_h264_syntax_template.c:214
H264SliceContext::mb_mbaff
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264dec.h:242
ff_thread_get_format
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
Definition: pthread_frame.c:938
H264Context::enable_er
int enable_er
Definition: h264dec.h:545
H264_SEI_FPA_TYPE_SIDE_BY_SIDE
Definition: h264_sei.h:64
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:376
IS_INTER
#define IS_INTER(a)
Definition: mpegutils.h:79
FF_COMPLIANCE_STRICT
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: avcodec.h:2593
H264ParamSets::sps
const SPS * sps
Definition: h264_ps.h:146
PPS::sps_id
unsigned int sps_id
Definition: h264_ps.h:110
TRANSPOSE
#define TRANSPOSE(x)
H264SEIContext::picture_timing
H264SEIPictureTiming picture_timing
Definition: h264_sei.h:157
H264Context::width_from_caller
int width_from_caller
Definition: h264dec.h:542
SPS::log2_max_poc_lsb
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264_ps.h:52
H264SEIContext::recovery_point
H264SEIRecoveryPoint recovery_point
Definition: h264_sei.h:161
H264SliceContext::mb_linesize
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264dec.h:227
AV_PIX_FMT_DXVA2_VLD
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer. ...
Definition: pixfmt.h:137
H264Context::slice_row
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264dec.h:538
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
H264_SEI_PIC_STRUCT_TOP_BOTTOM
3: top field, bottom field, in that order
Definition: h264_sei.h:49
alloc_picture
static int alloc_picture(H264Context *h, H264Picture *pic)
Definition: h264_slice.c:188
H264SliceContext::linesize
ptrdiff_t linesize
Definition: h264dec.h:226
H264Context::block_offset
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264dec.h:397
SPS::time_scale
uint32_t time_scale
Definition: h264_ps.h:82
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:388
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:396
PPS::transform_8x8_mode
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264_ps.h:124
H264SliceContext::uvlinesize
ptrdiff_t uvlinesize
Definition: h264dec.h:226
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:380
h264_slice_init
static int h264_slice_init(H264Context *h, H264SliceContext *sl, const H2645NAL *nal)
Definition: h264_slice.c:1897
SPS::pic_struct_present_flag
int pic_struct_present_flag
Definition: h264_ps.h:92
CHROMA444
#define CHROMA444(h)
Definition: h264dec.h:99
H264SliceContext::list_count
unsigned int list_count
Definition: h264dec.h:268
H264Context::zigzag_scan
uint8_t zigzag_scan[16]
Definition: h264dec.h:421
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:386
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
H264POCContext::prev_poc_lsb
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264_parse.h:50
release_unused_pictures
static void release_unused_pictures(H264Context *h, int remove_current)
Definition: h264_slice.c:116
ff_h264_alloc_tables
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264dec.c:180
AV_ZERO128
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
AV_PIX_FMT_D3D11
Hardware surfaces for Direct3D11.
Definition: pixfmt.h:313
AVCOL_RANGE_MPEG
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:511
H264SliceContext::left_type
int left_type[LEFT_MBS]
Definition: h264dec.h:216
av_cmp_q
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
H264Context::nb_slice_ctx_queued
int nb_slice_ctx_queued
Definition: h264dec.h:352
AVDISCARD_NONREF
discard all non reference
Definition: avcodec.h:798
ff_h264_field_end
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
Definition: h264_picture.c:154
H264Context::qscale_table_pool
AVBufferPool * qscale_table_pool
Definition: h264dec.h:549
H264Context::next_output_pic
H264Picture * next_output_pic
Definition: h264dec.h:467
H264_SEI_FPA_TYPE_CHECKERBOARD
Definition: h264_sei.h:61
SPS::mb_height
int mb_height
Definition: h264_ps.h:61
H264Context::motion_val_pool
AVBufferPool * motion_val_pool
Definition: h264dec.h:551
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
H264SliceContext::delta_poc_bottom
int delta_poc_bottom
Definition: h264dec.h:328
IS_8x8DCT
#define IS_8x8DCT(a)
Definition: h264dec.h:104
internal.h
common internal api header.
if
if(ret< 0)
Definition: vf_mcdeint.c:279
av_buffer_pool_init
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:238
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
AV_COPY128
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
get_pixel_format
static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
Definition: h264_slice.c:763
H264ParamSets::pps_ref
AVBufferRef * pps_ref
Definition: h264_ps.h:142
SPS::log2_max_frame_num
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264_ps.h:50
H264Context::missing_fields
int missing_fields
Definition: h264dec.h:528
c
static double c[64]
Definition: vsrc_mptestsrc.c:87
av_color_transfer_name
const char * av_color_transfer_name(enum AVColorTransferCharacteristic transfer)
Definition: pixdesc.c:2775
H264Context::ps
H264ParamSets ps
Definition: h264dec.h:456
H264SEIContext::frame_packing
H264SEIFramePacking frame_packing
Definition: h264_sei.h:163
h264_mvpred.h
H.264 / AVC / MPEG-4 part10 motion vector prediction.
av_buffer_ref
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
AV_PICTURE_TYPE_B
Bi-dir predicted.
Definition: avutil.h:276
AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
stereo3d.h
Stereoscopic video.
AV_STEREO3D_COLUMNS
Views are packed per column.
Definition: stereo3d.h:141
H264Context::cur_chroma_format_idc
int cur_chroma_format_idc
Definition: h264dec.h:536
H264SliceContext::intra4x4_pred_mode
int8_t * intra4x4_pred_mode
Definition: h264dec.h:206
AVCodecContext::properties
unsigned properties
Properties of the stream that gets decoded.
Definition: avcodec.h:3177
AVCodecContext::skip_loop_filter
enum AVDiscard skip_loop_filter
Skip loop filtering for selected frames.
Definition: avcodec.h:2976
AVRational::den
int den
Denominator.
Definition: rational.h:60
predict_field_decoding_flag
static void predict_field_decoding_flag(const H264Context *h, H264SliceContext *sl)
Definition: h264_slice.c:2472
ff_h264_decode_mb_cavlc
int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cavlc.c:702
H2645NAL::gb
GetBitContext gb
Definition: h2645_parse.h:46
SPS::bit_depth_luma
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264_ps.h:98
IS_INTRA
#define IS_INTRA(x, y)
H264SEIAFD::present
int present
Definition: h264_sei.h:93
H264POCContext::delta_poc
int delta_poc[2]
Definition: h264_parse.h:47
ff_h264_free_tables
void ff_h264_free_tables(H264Context *h)
Definition: h264dec.c:137
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:1559
LTOP
#define LTOP
Definition: h264dec.h:76
PICT_FRAME
#define PICT_FRAME
Definition: mpegutils.h:39
backup_mb_border
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:563
H264Context::zigzag_scan8x8_cavlc_q0
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264dec.h:429
H264SliceContext::ref_cache
int8_t ref_cache[2][5 *8]
Definition: h264dec.h:300
AV_CODEC_FLAG_OUTPUT_CORRUPT
#define AV_CODEC_FLAG_OUTPUT_CORRUPT
Output even those frames that might be corrupted.
Definition: avcodec.h:849
H264SliceContext::pps_id
unsigned int pps_id
Definition: h264dec.h:278
AVCodecContext::execute
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:2824
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:370
AVHWAccel::frame_priv_data_size
int frame_priv_data_size
Size of per-frame hardware accelerator private data.
Definition: avcodec.h:3701
H264_SEI_FPA_TYPE_TOP_BOTTOM
Definition: h264_sei.h:65
CHROMA422
#define CHROMA422(h)
Definition: h264dec.h:98
FF_BUG_TRUNCATED
#define FF_BUG_TRUNCATED
Definition: avcodec.h:2576
H264Context::cur_pic
H264Picture cur_pic
Definition: h264dec.h:347
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:296
AV_ZERO32
#define AV_ZERO32(d)
Definition: intreadwrite.h:614
H264Context::mb_width
int mb_width
Definition: h264dec.h:435
find_unused_picture
static int find_unused_picture(H264Context *h)
Definition: h264_slice.c:253
H264Context::current_slice
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264dec.h:488
ff_h264_execute_ref_pic_marking
int ff_h264_execute_ref_pic_marking(H264Context *h)
Execute the reference picture marking (memory management control operations).
Definition: h264_refs.c:608
align_get_bits
static const uint8_t * align_get_bits(GetBitContext *s)
Definition: get_bits.h:658
ff_h264_pred_weight_table
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
SPS::mb_width
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264_ps.h:59
AVCodecContext::flags2
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:1619
H264Context::mb2b_xy
uint32_t * mb2b_xy
Definition: h264dec.h:399
H264SliceContext::ref_list
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264dec.h:269
H264Context::field_scan8x8_cavlc_q0
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264dec.h:432
H264Context::cur_bit_depth_luma
int cur_bit_depth_luma
Definition: h264dec.h:537
H264Context::crop_top
int crop_top
Definition: h264dec.h:382
ERContext::error_count
atomic_int error_count
Definition: error_resilience.h:64
H264Picture::ref_index_buf
AVBufferRef * ref_index_buf[2]
Definition: h264dec.h:144
ff_h264dsp_init
av_cold void ff_h264dsp_init(H264DSPContext *c, const int bit_depth, const int chroma_format_idc)
Definition: h264dsp.c:67
AVCodecContext::frame_number
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2219
H264Context::h264dsp
H264DSPContext h264dsp
Definition: h264dec.h:341
ff_er_frame_start
void ff_er_frame_start(ERContext *s)
Definition: error_resilience.c:797
AVFrame::height
int height
Definition: frame.h:276
AV_CODEC_FLAG2_SHOW_ALL
#define AV_CODEC_FLAG2_SHOW_ALL
Show all frames before the first keyframe.
Definition: avcodec.h:937
out
FILE * out
Definition: movenc.c:54
H264SliceContext::mvd_table
uint8_t(*[2] mvd_table)[2]
Definition: h264dec.h:313
H264Context::field_scan8x8
uint8_t field_scan8x8[64]
Definition: h264dec.h:425
H264SliceContext::slice_type_fixed
int slice_type_fixed
Definition: h264dec.h:185
fill_filter_caches_inter
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:2176
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AVFrame::color_trc
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:467
H264POCContext::prev_frame_num_offset
int prev_frame_num_offset
for POC type 2
Definition: h264_parse.h:52
av_always_inline
#define av_always_inline
Definition: attributes.h:39
H264_SEI_FPA_TYPE_INTERLEAVE_TEMPORAL
Definition: h264_sei.h:66
AV_PIX_FMT_D3D11VA_VLD
HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView p...
Definition: pixfmt.h:229
H264SliceContext::slice_beta_offset
int slice_beta_offset
Definition: h264dec.h:195
H264Context::intra4x4_pred_mode
int8_t * intra4x4_pred_mode
Definition: h264dec.h:385
av_buffer_pool_get
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:334
ER_AC_END
#define ER_AC_END
Definition: error_resilience.h:34
decode_slice
static int decode_slice(struct AVCodecContext *avctx, void *arg)
Definition: h264_slice.c:2530
H264SliceContext::delta_poc
int delta_poc[2]
Definition: h264dec.h:329
ff_h264_direct_dist_scale_factor
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:62
av_get_pix_fmt_name
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:2322
ff_h264_slice_context_init
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
cr
static double cr(void *priv, double x, double y)
Definition: vf_geq.c:113
H264Context::field_scan_q0
uint8_t field_scan_q0[16]
Definition: h264dec.h:430
H264SliceContext::mb_field_decoding_flag
int mb_field_decoding_flag
Definition: h264dec.h:241
H264Context::non_zero_count
uint8_t(* non_zero_count)[48]
Definition: h264dec.h:388
loop_filter
static void loop_filter(const H264Context *h, H264SliceContext *sl, int start_x, int end_x)
Definition: h264_slice.c:2402
SPS::crop_bottom
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264_ps.h:71
golomb.h
exp golomb vlc stuff
H264SliceContext::bipred_scratchpad
uint8_t * bipred_scratchpad
Definition: h264dec.h:283
ff_h264_unref_picture
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:45
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
ff_h264qpel_init
av_cold void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
Definition: h264qpel.c:49
AV_GET_BUFFER_FLAG_REF
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1143
H264Context::droppable
int droppable
Definition: h264dec.h:362
SPS::level_idc
int level_idc
Definition: h264_ps.h:47
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2591
H264Context::crop_right
int crop_right
Definition: h264dec.h:381
ff_h264_filter_mb_fast
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)
Definition: h264_loopfilter.c:418
H264Context::nal_ref_idc
int nal_ref_idc
Definition: h264dec.h:442
H264SliceContext::gb
GetBitContext gb
Definition: h264dec.h:179
H264Context::field_scan
uint8_t field_scan[16]
Definition: h264dec.h:424
H264SliceContext::cabac_init_idc
int cabac_init_idc
Definition: h264dec.h:320
FRAME_RECOVERED_IDR
#define FRAME_RECOVERED_IDR
We have seen an IDR, so all the following frames in coded order are correctly decodable.
Definition: h264dec.h:517
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
H264_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM
6: bottom field, top field, bottom field repeated, in that order
Definition: h264_sei.h:52
FFMAX3
#define FFMAX3(a, b, c)
Definition: common.h:95
H264Context::b_stride
int b_stride
Definition: h264dec.h:401
AV_PICTURE_TYPE_P
Predicted.
Definition: avutil.h:275
tb
#define tb
Definition: regdef.h:68
cabac.h
Context Adaptive Binary Arithmetic Coder.
H264_MAX_PICTURE_COUNT
#define H264_MAX_PICTURE_COUNT
Definition: h264dec.h:52
a
a
Definition: h264pred_template.c:468
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
ff_h264_init_cabac_states
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1263
H264Context::short_ref_count
int short_ref_count
number of actual short term references
Definition: h264dec.h:479
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
SPS::colorspace
enum AVColorSpace colorspace
Definition: h264_ps.h:79
Generated on Tue Sep 18 2018 19:21:21 for FFmpeg by   doxygen 1.8.6