GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/h264dec.c Lines: 435 583 74.6 %
Date: 2020-04-02 05:41:20 Branches: 253 427 59.3 %

Line Branch Exec Source
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
#define UNCHECKED_BITSTREAM_READER 1
29
30
#include "libavutil/avassert.h"
31
#include "libavutil/display.h"
32
#include "libavutil/imgutils.h"
33
#include "libavutil/opt.h"
34
#include "libavutil/stereo3d.h"
35
#include "internal.h"
36
#include "bytestream.h"
37
#include "cabac.h"
38
#include "cabac_functions.h"
39
#include "error_resilience.h"
40
#include "avcodec.h"
41
#include "h264.h"
42
#include "h264dec.h"
43
#include "h2645_parse.h"
44
#include "h264data.h"
45
#include "h264chroma.h"
46
#include "h264_mvpred.h"
47
#include "h264_ps.h"
48
#include "golomb.h"
49
#include "hwaccel.h"
50
#include "mathops.h"
51
#include "me_cmp.h"
52
#include "mpegutils.h"
53
#include "profiles.h"
54
#include "rectangle.h"
55
#include "thread.h"
56
57
const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
58
59
10495
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
60
{
61
10495
    H264Context *h = avctx->priv_data;
62

10495
    return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
63
}
64
65
static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
66
                              int (*mv)[2][4][2],
67
                              int mb_x, int mb_y, int mb_intra, int mb_skipped)
68
{
69
    H264Context *h = opaque;
70
    H264SliceContext *sl = &h->slice_ctx[0];
71
72
    sl->mb_x = mb_x;
73
    sl->mb_y = mb_y;
74
    sl->mb_xy = mb_x + mb_y * h->mb_stride;
75
    memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
76
    av_assert1(ref >= 0);
77
    /* FIXME: It is possible albeit uncommon that slice references
78
     * differ between slices. We take the easy approach and ignore
79
     * it for now. If this turns out to have any relevance in
80
     * practice then correct remapping should be added. */
81
    if (ref >= sl->ref_count[0])
82
        ref = 0;
83
    if (!sl->ref_list[0][ref].data[0]) {
84
        av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
85
        ref = 0;
86
    }
87
    if ((sl->ref_list[0][ref].reference&3) != 3) {
88
        av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
89
        return;
90
    }
91
    fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
92
                   2, 2, 2, ref, 1);
93
    fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
94
    fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
95
                   pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
96
    sl->mb_mbaff =
97
    sl->mb_field_decoding_flag = 0;
98
    ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
99
}
100
101
334287
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl,
102
                             int y, int height)
103
{
104
334287
    AVCodecContext *avctx = h->avctx;
105
334287
    const AVFrame   *src  = h->cur_pic.f;
106
334287
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
107
334287
    int vshift = desc->log2_chroma_h;
108
334287
    const int field_pic = h->picture_structure != PICT_FRAME;
109
334287
    if (field_pic) {
110
72339
        height <<= 1;
111
72339
        y      <<= 1;
112
    }
113
114
334287
    height = FFMIN(height, avctx->height - y);
115
116

334287
    if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
117
36196
        return;
118
119
298091
    if (avctx->draw_horiz_band) {
120
        int offset[AV_NUM_DATA_POINTERS];
121
        int i;
122
123
        offset[0] = y * src->linesize[0];
124
        offset[1] =
125
        offset[2] = (y >> vshift) * src->linesize[1];
126
        for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
127
            offset[i] = 0;
128
129
        emms_c();
130
131
        avctx->draw_horiz_band(avctx, src, offset,
132
                               y, h->picture_structure, height);
133
    }
134
}
135
136
1070
void ff_h264_free_tables(H264Context *h)
137
{
138
    int i;
139
140
1070
    av_freep(&h->intra4x4_pred_mode);
141
1070
    av_freep(&h->chroma_pred_mode_table);
142
1070
    av_freep(&h->cbp_table);
143
1070
    av_freep(&h->mvd_table[0]);
144
1070
    av_freep(&h->mvd_table[1]);
145
1070
    av_freep(&h->direct_table);
146
1070
    av_freep(&h->non_zero_count);
147
1070
    av_freep(&h->slice_table_base);
148
1070
    h->slice_table = NULL;
149
1070
    av_freep(&h->list_counts);
150
151
1070
    av_freep(&h->mb2b_xy);
152
1070
    av_freep(&h->mb2br_xy);
153
154
1070
    av_buffer_pool_uninit(&h->qscale_table_pool);
155
1070
    av_buffer_pool_uninit(&h->mb_type_pool);
156
1070
    av_buffer_pool_uninit(&h->motion_val_pool);
157
1070
    av_buffer_pool_uninit(&h->ref_index_pool);
158
159
2142
    for (i = 0; i < h->nb_slice_ctx; i++) {
160
1072
        H264SliceContext *sl = &h->slice_ctx[i];
161
162
1072
        av_freep(&sl->dc_val_base);
163
1072
        av_freep(&sl->er.mb_index2xy);
164
1072
        av_freep(&sl->er.error_status_table);
165
1072
        av_freep(&sl->er.er_temp_buffer);
166
167
1072
        av_freep(&sl->bipred_scratchpad);
168
1072
        av_freep(&sl->edge_emu_buffer);
169
1072
        av_freep(&sl->top_borders[0]);
170
1072
        av_freep(&sl->top_borders[1]);
171
172
1072
        sl->bipred_scratchpad_allocated = 0;
173
1072
        sl->edge_emu_buffer_allocated   = 0;
174
1072
        sl->top_borders_allocated[0]    = 0;
175
1072
        sl->top_borders_allocated[1]    = 0;
176
    }
177
1070
}
178
179
533
int ff_h264_alloc_tables(H264Context *h)
180
{
181
533
    const int big_mb_num = h->mb_stride * (h->mb_height + 1);
182
533
    const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
183
    int x, y;
184
185
533
    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
186
                      row_mb_num, 8 * sizeof(uint8_t), fail)
187
533
    h->slice_ctx[0].intra4x4_pred_mode = h->intra4x4_pred_mode;
188
189

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
190
                      big_mb_num * 48 * sizeof(uint8_t), fail)
191

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base,
192
                      (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
193

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table,
194
                      big_mb_num * sizeof(uint16_t), fail)
195

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
196
                      big_mb_num * sizeof(uint8_t), fail)
197
533
    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[0],
198
                      row_mb_num, 16 * sizeof(uint8_t), fail);
199
533
    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[1],
200
                      row_mb_num, 16 * sizeof(uint8_t), fail);
201
533
    h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
202
533
    h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
203
204

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table,
205
                      4 * big_mb_num * sizeof(uint8_t), fail);
206

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts,
207
                      big_mb_num * sizeof(uint8_t), fail)
208
209
533
    memset(h->slice_table_base, -1,
210
533
           (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
211
533
    h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
212
213

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy,
214
                      big_mb_num * sizeof(uint32_t), fail);
215

533
    FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy,
216
                      big_mb_num * sizeof(uint32_t), fail);
217
12933
    for (y = 0; y < h->mb_height; y++)
218
696713
        for (x = 0; x < h->mb_width; x++) {
219
684313
            const int mb_xy = x + y * h->mb_stride;
220
684313
            const int b_xy  = 4 * x + 4 * y * h->b_stride;
221
222
684313
            h->mb2b_xy[mb_xy]  = b_xy;
223
684313
            h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
224
        }
225
226
533
    return 0;
227
228
fail:
229
    ff_h264_free_tables(h);
230
    return AVERROR(ENOMEM);
231
}
232
233
/**
234
 * Init context
235
 * Allocate buffers which are not shared amongst multiple threads.
236
 */
237
534
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
238
{
239
534
    ERContext *er = &sl->er;
240
534
    int mb_array_size = h->mb_height * h->mb_stride;
241
534
    int y_size  = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
242
534
    int c_size  = h->mb_stride * (h->mb_height + 1);
243
534
    int yc_size = y_size + 2   * c_size;
244
    int x, y, i;
245
246
534
    sl->ref_cache[0][scan8[5]  + 1] =
247
534
    sl->ref_cache[0][scan8[7]  + 1] =
248
534
    sl->ref_cache[0][scan8[13] + 1] =
249
534
    sl->ref_cache[1][scan8[5]  + 1] =
250
534
    sl->ref_cache[1][scan8[7]  + 1] =
251
534
    sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
252
253
534
    if (sl != h->slice_ctx) {
254
1
        memset(er, 0, sizeof(*er));
255
    } else
256
    if (CONFIG_ERROR_RESILIENCE) {
257
258
        /* init ER */
259
533
        er->avctx          = h->avctx;
260
533
        er->decode_mb      = h264_er_decode_mb;
261
533
        er->opaque         = h;
262
533
        er->quarter_sample = 1;
263
264
533
        er->mb_num      = h->mb_num;
265
533
        er->mb_width    = h->mb_width;
266
533
        er->mb_height   = h->mb_height;
267
533
        er->mb_stride   = h->mb_stride;
268
533
        er->b8_stride   = h->mb_width * 2 + 1;
269
270
        // error resilience code looks cleaner with this
271

533
        FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy,
272
                          (h->mb_num + 1) * sizeof(int), fail);
273
274
12933
        for (y = 0; y < h->mb_height; y++)
275
696713
            for (x = 0; x < h->mb_width; x++)
276
684313
                er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
277
278
533
        er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
279
533
                                                      h->mb_stride + h->mb_width;
280
281

533
        FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table,
282
                          mb_array_size * sizeof(uint8_t), fail);
283
284

533
        FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer,
285
                         h->mb_height * h->mb_stride * (4*sizeof(int) + 1), fail);
286
287

533
        FF_ALLOCZ_OR_GOTO(h->avctx, sl->dc_val_base,
288
                          yc_size * sizeof(int16_t), fail);
289
533
        er->dc_val[0] = sl->dc_val_base + h->mb_width * 2 + 2;
290
533
        er->dc_val[1] = sl->dc_val_base + y_size + h->mb_stride + 1;
291
533
        er->dc_val[2] = er->dc_val[1] + c_size;
292
4230806
        for (i = 0; i < yc_size; i++)
293
4230273
            sl->dc_val_base[i] = 1024;
294
    }
295
296
534
    return 0;
297
298
fail:
299
    return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
300
}
301
302
537
static int h264_init_context(AVCodecContext *avctx, H264Context *h)
303
{
304
    int i;
305
306
537
    h->avctx                 = avctx;
307
537
    h->cur_chroma_format_idc = -1;
308
309
537
    h->width_from_caller     = avctx->width;
310
537
    h->height_from_caller    = avctx->height;
311
312
537
    h->picture_structure     = PICT_FRAME;
313
537
    h->workaround_bugs       = avctx->workaround_bugs;
314
537
    h->flags                 = avctx->flags;
315
537
    h->poc.prev_poc_msb      = 1 << 16;
316
537
    h->recovery_frame        = -1;
317
537
    h->frame_recovered       = 0;
318
537
    h->poc.prev_frame_num    = -1;
319
537
    h->sei.frame_packing.arrangement_cancel_flag = -1;
320
537
    h->sei.unregistered.x264_build = -1;
321
322
537
    h->next_outputed_poc = INT_MIN;
323
9129
    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
324
8592
        h->last_pocs[i] = INT_MIN;
325
326
537
    ff_h264_sei_uninit(&h->sei);
327
328
537
    h->nb_slice_ctx = (avctx->active_thread_type & FF_THREAD_SLICE) ? avctx->thread_count : 1;
329
537
    h->slice_ctx = av_mallocz_array(h->nb_slice_ctx, sizeof(*h->slice_ctx));
330
537
    if (!h->slice_ctx) {
331
        h->nb_slice_ctx = 0;
332
        return AVERROR(ENOMEM);
333
    }
334
335
19869
    for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
336
19332
        h->DPB[i].f = av_frame_alloc();
337
19332
        if (!h->DPB[i].f)
338
            return AVERROR(ENOMEM);
339
    }
340
341
537
    h->cur_pic.f = av_frame_alloc();
342
537
    if (!h->cur_pic.f)
343
        return AVERROR(ENOMEM);
344
345
537
    h->last_pic_for_ec.f = av_frame_alloc();
346
537
    if (!h->last_pic_for_ec.f)
347
        return AVERROR(ENOMEM);
348
349
1075
    for (i = 0; i < h->nb_slice_ctx; i++)
350
538
        h->slice_ctx[i].h264 = h;
351
352
537
    return 0;
353
}
354
355
537
static av_cold int h264_decode_end(AVCodecContext *avctx)
356
{
357
537
    H264Context *h = avctx->priv_data;
358
    int i;
359
360
537
    ff_h264_remove_all_refs(h);
361
537
    ff_h264_free_tables(h);
362
363
19869
    for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
364
19332
        ff_h264_unref_picture(h, &h->DPB[i]);
365
19332
        av_frame_free(&h->DPB[i].f);
366
    }
367
537
    memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
368
369
537
    h->cur_pic_ptr = NULL;
370
371
537
    av_freep(&h->slice_ctx);
372
537
    h->nb_slice_ctx = 0;
373
374
537
    ff_h264_sei_uninit(&h->sei);
375
537
    ff_h264_ps_uninit(&h->ps);
376
377
537
    ff_h2645_packet_uninit(&h->pkt);
378
379
537
    ff_h264_unref_picture(h, &h->cur_pic);
380
537
    av_frame_free(&h->cur_pic.f);
381
537
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
382
537
    av_frame_free(&h->last_pic_for_ec.f);
383
384
537
    return 0;
385
}
386
387
static AVOnce h264_vlc_init = AV_ONCE_INIT;
388
389
529
static av_cold int h264_decode_init(AVCodecContext *avctx)
390
{
391
529
    H264Context *h = avctx->priv_data;
392
    int ret;
393
394
529
    ret = h264_init_context(avctx, h);
395
529
    if (ret < 0)
396
        return ret;
397
398
529
    ret = ff_thread_once(&h264_vlc_init, ff_h264_decode_init_vlc);
399
529
    if (ret != 0) {
400
        av_log(avctx, AV_LOG_ERROR, "pthread_once has failed.");
401
        return AVERROR_UNKNOWN;
402
    }
403
404
529
    if (avctx->ticks_per_frame == 1) {
405
529
        if(h->avctx->time_base.den < INT_MAX/2) {
406
529
            h->avctx->time_base.den *= 2;
407
        } else
408
            h->avctx->time_base.num /= 2;
409
    }
410
529
    avctx->ticks_per_frame = 2;
411
412

529
    if (avctx->extradata_size > 0 && avctx->extradata) {
413
308
        ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
414
                                       &h->ps, &h->is_avc, &h->nal_length_size,
415
                                       avctx->err_recognition, avctx);
416
308
        if (ret < 0) {
417
            h264_decode_end(avctx);
418
            return ret;
419
        }
420
    }
421
422

529
    if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
423
        h->avctx->has_b_frames < h->ps.sps->num_reorder_frames) {
424
        h->avctx->has_b_frames = h->ps.sps->num_reorder_frames;
425
    }
426
427
529
    avctx->internal->allocate_progress = 1;
428
429
529
    ff_h264_flush_change(h);
430
431

529
    if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
432
1
        h->enable_er = 0;
433
434

529
    if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
435
        av_log(avctx, AV_LOG_WARNING,
436
               "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
437
               "Use it at your own risk\n");
438
    }
439
440
529
    return 0;
441
}
442
443
#if HAVE_THREADS
444
8
static int decode_init_thread_copy(AVCodecContext *avctx)
445
{
446
8
    H264Context *h = avctx->priv_data;
447
    int ret;
448
449
8
    if (!avctx->internal->is_copy)
450
        return 0;
451
452
8
    memset(h, 0, sizeof(*h));
453
454
8
    ret = h264_init_context(avctx, h);
455
8
    if (ret < 0)
456
        return ret;
457
458
8
    h->context_initialized = 0;
459
460
8
    return 0;
461
}
462
#endif
463
464
/**
465
 * instantaneous decoder refresh.
466
 */
467
1552
static void idr(H264Context *h)
468
{
469
    int i;
470
1552
    ff_h264_remove_all_refs(h);
471
1552
    h->poc.prev_frame_num        =
472
1552
    h->poc.prev_frame_num_offset = 0;
473
1552
    h->poc.prev_poc_msb          = 1<<16;
474
1552
    h->poc.prev_poc_lsb          = -1;
475
26384
    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
476
24832
        h->last_pocs[i] = INT_MIN;
477
1552
}
478
479
/* forget old pics after a seek */
480
535
void ff_h264_flush_change(H264Context *h)
481
{
482
    int i, j;
483
484
535
    h->next_outputed_poc = INT_MIN;
485
535
    h->prev_interlaced_frame = 1;
486
535
    idr(h);
487
488
535
    h->poc.prev_frame_num = -1;
489
535
    if (h->cur_pic_ptr) {
490
        h->cur_pic_ptr->reference = 0;
491
        for (j=i=0; h->delayed_pic[i]; i++)
492
            if (h->delayed_pic[i] != h->cur_pic_ptr)
493
                h->delayed_pic[j++] = h->delayed_pic[i];
494
        h->delayed_pic[j] = NULL;
495
    }
496
535
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
497
498
535
    h->first_field = 0;
499
535
    h->recovery_frame = -1;
500
535
    h->frame_recovered = 0;
501
535
    h->current_slice = 0;
502
535
    h->mmco_reset = 1;
503
535
}
504
505
/* forget old pics after a seek */
506
static void flush_dpb(AVCodecContext *avctx)
507
{
508
    H264Context *h = avctx->priv_data;
509
    int i;
510
511
    memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
512
513
    ff_h264_flush_change(h);
514
    ff_h264_sei_uninit(&h->sei);
515
516
    for (i = 0; i < H264_MAX_PICTURE_COUNT; i++)
517
        ff_h264_unref_picture(h, &h->DPB[i]);
518
    h->cur_pic_ptr = NULL;
519
    ff_h264_unref_picture(h, &h->cur_pic);
520
521
    h->mb_y = 0;
522
523
    ff_h264_free_tables(h);
524
    h->context_initialized = 0;
525
}
526
527
32
static int get_last_needed_nal(H264Context *h)
528
{
529
32
    int nals_needed = 0;
530
32
    int first_slice = 0;
531
    int i, ret;
532
533
65
    for (i = 0; i < h->pkt.nb_nals; i++) {
534
33
        H2645NAL *nal = &h->pkt.nals[i];
535
        GetBitContext gb;
536
537
        /* packets can sometimes contain multiple PPS/SPS,
538
         * e.g. two PAFF field pictures in one packet, or a demuxer
539
         * which splits NALs strangely if so, when frame threading we
540
         * can't start the next thread until we've read all of them */
541
33
        switch (nal->type) {
542
        case H264_NAL_SPS:
543
        case H264_NAL_PPS:
544
            nals_needed = i;
545
            break;
546
32
        case H264_NAL_DPA:
547
        case H264_NAL_IDR_SLICE:
548
        case H264_NAL_SLICE:
549
32
            ret = init_get_bits8(&gb, nal->data + 1, nal->size - 1);
550
32
            if (ret < 0) {
551
                av_log(h->avctx, AV_LOG_ERROR, "Invalid zero-sized VCL NAL unit\n");
552
                if (h->avctx->err_recognition & AV_EF_EXPLODE)
553
                    return ret;
554
555
                break;
556
            }
557

32
            if (!get_ue_golomb_long(&gb) ||  // first_mb_in_slice
558
                !first_slice ||
559
                first_slice != nal->type)
560
32
                nals_needed = i;
561
32
            if (!first_slice)
562
32
                first_slice = nal->type;
563
        }
564
    }
565
566
32
    return nals_needed;
567
}
568
569
static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
570
{
571
    av_log(logctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
572
    av_log(logctx, AV_LOG_DEBUG, "  green_metadata_type: %d\n", gm->green_metadata_type);
573
574
    if (gm->green_metadata_type == 0) {
575
        av_log(logctx, AV_LOG_DEBUG, "  green_metadata_period_type: %d\n", gm->period_type);
576
577
        if (gm->period_type == 2)
578
            av_log(logctx, AV_LOG_DEBUG, "  green_metadata_num_seconds: %d\n", gm->num_seconds);
579
        else if (gm->period_type == 3)
580
            av_log(logctx, AV_LOG_DEBUG, "  green_metadata_num_pictures: %d\n", gm->num_pictures);
581
582
        av_log(logctx, AV_LOG_DEBUG, "  SEI GREEN Complexity Metrics: %f %f %f %f\n",
583
               (float)gm->percent_non_zero_macroblocks/255,
584
               (float)gm->percent_intra_coded_macroblocks/255,
585
               (float)gm->percent_six_tap_filtering/255,
586
               (float)gm->percent_alpha_point_deblocking_instance/255);
587
588
    } else if (gm->green_metadata_type == 1) {
589
        av_log(logctx, AV_LOG_DEBUG, "  xsd_metric_type: %d\n", gm->xsd_metric_type);
590
591
        if (gm->xsd_metric_type == 0)
592
            av_log(logctx, AV_LOG_DEBUG, "  xsd_metric_value: %f\n",
593
                   (float)gm->xsd_metric_value/100);
594
    }
595
}
596
597
26823
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
598
{
599
26823
    AVCodecContext *const avctx = h->avctx;
600
26823
    int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
601
26823
    int idr_cleared=0;
602
26823
    int i, ret = 0;
603
604
26823
    h->has_slice = 0;
605
26823
    h->nal_unit_type= 0;
606
607
26823
    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
608
26067
        h->current_slice = 0;
609
26067
        if (!h->first_field) {
610
22863
            h->cur_pic_ptr = NULL;
611
22863
            ff_h264_sei_uninit(&h->sei);
612
        }
613
    }
614
615
26823
    if (h->nal_length_size == 4) {
616

2702
        if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
617
            h->is_avc = 0;
618

2702
        }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
619
2702
            h->is_avc = 1;
620
    }
621
622
26823
    ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc, h->nal_length_size,
623
26823
                                avctx->codec_id, avctx->flags2 & AV_CODEC_FLAG2_FAST, 0);
624
26823
    if (ret < 0) {
625
1
        av_log(avctx, AV_LOG_ERROR,
626
               "Error splitting the input into NAL units.\n");
627
1
        return ret;
628
    }
629
630
26822
    if (avctx->active_thread_type & FF_THREAD_FRAME)
631
32
        nals_needed = get_last_needed_nal(h);
632
26822
    if (nals_needed < 0)
633
        return nals_needed;
634
635
73866
    for (i = 0; i < h->pkt.nb_nals; i++) {
636
47044
        H2645NAL *nal = &h->pkt.nals[i];
637
        int max_slice_ctx, err;
638
639
47044
        if (avctx->skip_frame >= AVDISCARD_NONREF &&
640

928
            nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
641
504
            continue;
642
643
        // FIXME these should stop being context-global variables
644
46540
        h->nal_ref_idc   = nal->ref_idc;
645
46540
        h->nal_unit_type = nal->type;
646
647
46540
        err = 0;
648


46540
        switch (nal->type) {
649
2072
        case H264_NAL_IDR_SLICE:
650
2072
            if ((nal->data[1] & 0xFC) == 0x98) {
651
                av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
652
                h->next_outputed_poc = INT_MIN;
653
                ret = -1;
654
                goto end;
655
            }
656
2072
            if(!idr_cleared) {
657
1017
                idr(h); // FIXME ensure we don't lose some frames if there is reordering
658
            }
659
2072
            idr_cleared = 1;
660
2072
            h->has_recovery_point = 1;
661
34468
        case H264_NAL_SLICE:
662
34468
            h->has_slice = 1;
663
664
34468
            if ((err = ff_h264_queue_decode_slice(h, nal))) {
665
377
                H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
666
377
                sl->ref_count[0] = sl->ref_count[1] = 0;
667
377
                break;
668
            }
669
670
34091
            if (h->current_slice == 1) {
671

25906
                if (avctx->active_thread_type & FF_THREAD_FRAME &&
672

32
                    i >= nals_needed && !h->setup_finished && h->cur_pic_ptr) {
673
32
                    ff_thread_finish_setup(avctx);
674
32
                    h->setup_finished = 1;
675
                }
676
677

25906
                if (h->avctx->hwaccel &&
678
                    (ret = h->avctx->hwaccel->start_frame(h->avctx, buf, buf_size)) < 0)
679
                    goto end;
680
            }
681
682
34091
            max_slice_ctx = avctx->hwaccel ? 1 : h->nb_slice_ctx;
683
34091
            if (h->nb_slice_ctx_queued == max_slice_ctx) {
684
33261
                if (h->avctx->hwaccel) {
685
                    ret = avctx->hwaccel->decode_slice(avctx, nal->raw_data, nal->raw_size);
686
                    h->nb_slice_ctx_queued = 0;
687
                } else
688
33261
                    ret = ff_h264_execute_decode_slices(h);
689

33261
                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
690
                    goto end;
691
            }
692
34091
            break;
693
        case H264_NAL_DPA:
694
        case H264_NAL_DPB:
695
        case H264_NAL_DPC:
696
            avpriv_request_sample(avctx, "data partitioning");
697
            break;
698
2270
        case H264_NAL_SEI:
699
2270
            ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
700

2270
            h->has_recovery_point = h->has_recovery_point || h->sei.recovery_point.recovery_frame_cnt != -1;
701
2270
            if (avctx->debug & FF_DEBUG_GREEN_MD)
702
                debug_green_metadata(&h->sei.green_metadata, h->avctx);
703

2270
            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
704
                goto end;
705
2270
            break;
706
979
        case H264_NAL_SPS: {
707
979
            GetBitContext tmp_gb = nal->gb;
708

979
            if (avctx->hwaccel && avctx->hwaccel->decode_params) {
709
                ret = avctx->hwaccel->decode_params(avctx,
710
                                                    nal->type,
711
                                                    nal->raw_data,
712
                                                    nal->raw_size);
713
                if (ret < 0)
714
                    goto end;
715
            }
716
979
            if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
717
979
                break;
718
2
            av_log(h->avctx, AV_LOG_DEBUG,
719
                   "SPS decoding failure, trying again with the complete NAL\n");
720
2
            init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
721
2
            if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
722
2
                break;
723
            ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
724
            break;
725
        }
726
6558
        case H264_NAL_PPS:
727

6558
            if (avctx->hwaccel && avctx->hwaccel->decode_params) {
728
                ret = avctx->hwaccel->decode_params(avctx,
729
                                                    nal->type,
730
                                                    nal->raw_data,
731
                                                    nal->raw_size);
732
                if (ret < 0)
733
                    goto end;
734
            }
735
6558
            ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
736
                                                       nal->size_bits);
737

6558
            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
738
                goto end;
739
6558
            break;
740
2265
        case H264_NAL_AUD:
741
        case H264_NAL_END_SEQUENCE:
742
        case H264_NAL_END_STREAM:
743
        case H264_NAL_FILLER_DATA:
744
        case H264_NAL_SPS_EXT:
745
        case H264_NAL_AUXILIARY_SLICE:
746
2265
            break;
747
        default:
748
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
749
                   nal->type, nal->size_bits);
750
        }
751
752
46540
        if (err < 0) {
753
377
            av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
754
        }
755
    }
756
757
26822
    ret = ff_h264_execute_decode_slices(h);
758

26822
    if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
759
        goto end;
760
761
    // set decode_error_flags to allow users to detect concealed decoding errors
762

26822
    if ((ret < 0 || h->slice_ctx->er.error_occurred) && h->cur_pic_ptr) {
763
2
        h->cur_pic_ptr->f->decode_error_flags |= FF_DECODE_ERROR_DECODE_SLICES;
764
    }
765
766
26822
    ret = 0;
767
26822
end:
768
769
#if CONFIG_ERROR_RESILIENCE
770
    /*
771
     * FIXME: Error handling code does not seem to support interlaced
772
     * when slices span multiple rows
773
     * The ff_er_add_slice calls don't work right for bottom
774
     * fields; they cause massive erroneous error concealing
775
     * Error marking covers both fields (top and bottom).
776
     * This causes a mismatched s->error_count
777
     * and a bad error table. Further, the error count goes to
778
     * INT_MAX when called for bottom field, because mb_y is
779
     * past end by one (callers fault) and resync_mb_y != 0
780
     * causes problems for the first MB line, too.
781
     */
782

26822
    if (!FIELD_PICTURE(h) && h->current_slice &&
783
19886
        h->ps.sps == (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data &&
784
19886
        h->enable_er) {
785
786
19136
        H264SliceContext *sl = h->slice_ctx;
787

19136
        int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
788
789
19136
        ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
790
791
19136
        if (use_last_pic) {
792
489
            ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
793
489
            sl->ref_list[0][0].parent = &h->last_pic_for_ec;
794
489
            memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
795
489
            memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
796
489
            sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
797
18647
        } else if (sl->ref_count[0]) {
798
16735
            ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
799
        } else
800
1912
            ff_h264_set_erpic(&sl->er.last_pic, NULL);
801
802
19136
        if (sl->ref_count[1])
803
16735
            ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
804
805
19136
        sl->er.ref_count = sl->ref_count[0];
806
807
19136
        ff_er_frame_end(&sl->er);
808
19136
        if (use_last_pic)
809
489
            memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
810
    }
811
#endif /* CONFIG_ERROR_RESILIENCE */
812
    /* clean up */
813

26822
    if (h->cur_pic_ptr && !h->droppable && h->has_slice) {
814
17200
        ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
815
17200
                                  h->picture_structure == PICT_BOTTOM_FIELD);
816
    }
817
818
26822
    return (ret < 0) ? ret : buf_size;
819
}
820
821
/**
822
 * Return the number of bytes consumed for building the current frame.
823
 */
824
26169
static int get_consumed_bytes(int pos, int buf_size)
825
{
826
26169
    if (pos == 0)
827
        pos = 1;        // avoid infinite loops (I doubt that is needed but...)
828
26169
    if (pos + 10 > buf_size)
829
26169
        pos = buf_size; // oops ;)
830
831
26169
    return pos;
832
}
833
834
22143
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
835
{
836
22143
    AVFrame *src = srcp->f;
837
    int ret;
838
839
22143
    ret = av_frame_ref(dst, src);
840
22143
    if (ret < 0)
841
        return ret;
842
843
22143
    av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(&h->sei.frame_packing), 0);
844
845
22143
    if (srcp->sei_recovery_frame_cnt == 0)
846
23
        dst->key_frame = 1;
847
848
22143
    return 0;
849
}
850
851
4
static int is_extra(const uint8_t *buf, int buf_size)
852
{
853
4
    int cnt= buf[5]&0x1f;
854
4
    const uint8_t *p= buf+6;
855
4
    if (!cnt)
856
        return 0;
857
8
    while(cnt--){
858
4
        int nalsize= AV_RB16(p) + 2;
859

4
        if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
860
            return 0;
861
4
        p += nalsize;
862
    }
863
4
    cnt = *(p++);
864
4
    if(!cnt)
865
        return 0;
866
8
    while(cnt--){
867
4
        int nalsize= AV_RB16(p) + 2;
868

4
        if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
869
            return 0;
870
4
        p += nalsize;
871
    }
872
4
    return 1;
873
}
874
875
22143
static int finalize_frame(H264Context *h, AVFrame *dst, H264Picture *out, int *got_frame)
876
{
877
    int ret;
878
879
22143
    if (((h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
880
22143
         (h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
881
22143
         out->recovered)) {
882
883
22143
        if (!h->avctx->hwaccel &&
884
22143
            (out->field_poc[0] == INT_MAX ||
885
22143
             out->field_poc[1] == INT_MAX)
886
           ) {
887
            int p;
888
            AVFrame *f = out->f;
889
            int field = out->field_poc[0] == INT_MAX;
890
            uint8_t *dst_data[4];
891
            int linesizes[4];
892
            const uint8_t *src_data[4];
893
894
            av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
895
896
            for (p = 0; p<4; p++) {
897
                dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
898
                src_data[p] = f->data[p] +  field   *f->linesize[p];
899
                linesizes[p] = 2*f->linesize[p];
900
            }
901
902
            av_image_copy(dst_data, linesizes, src_data, linesizes,
903
                          f->format, f->width, f->height>>1);
904
        }
905
906
22143
        ret = output_frame(h, dst, out);
907
22143
        if (ret < 0)
908
            return ret;
909
910
22143
        *got_frame = 1;
911
912
        if (CONFIG_MPEGVIDEO) {
913
22143
            ff_print_debug_info2(h->avctx, dst, NULL,
914
                                 out->mb_type,
915
                                 out->qscale_table,
916
22143
                                 out->motion_val,
917
                                 NULL,
918
                                 h->mb_width, h->mb_height, h->mb_stride, 1);
919
        }
920
    }
921
922
22143
    return 0;
923
}
924
925
519
static int send_next_delayed_frame(H264Context *h, AVFrame *dst_frame,
926
                                   int *got_frame, int buf_index)
927
{
928
    int ret, i, out_idx;
929
519
    H264Picture *out = h->delayed_pic[0];
930
931
519
    h->cur_pic_ptr = NULL;
932
519
    h->first_field = 0;
933
934
519
    out_idx = 0;
935
519
    for (i = 1;
936
1039
         h->delayed_pic[i] &&
937
527
         !h->delayed_pic[i]->f->key_frame &&
938
520
         !h->delayed_pic[i]->mmco_reset;
939
520
         i++)
940
520
        if (h->delayed_pic[i]->poc < out->poc) {
941
103
            out     = h->delayed_pic[i];
942
103
            out_idx = i;
943
        }
944
945
1263
    for (i = out_idx; h->delayed_pic[i]; i++)
946
744
        h->delayed_pic[i] = h->delayed_pic[i + 1];
947
948
519
    if (out) {
949
263
        out->reference &= ~DELAYED_PIC_REF;
950
263
        ret = finalize_frame(h, dst_frame, out, got_frame);
951
263
        if (ret < 0)
952
            return ret;
953
    }
954
955
519
    return buf_index;
956
}
957
958
27342
static int h264_decode_frame(AVCodecContext *avctx, void *data,
959
                             int *got_frame, AVPacket *avpkt)
960
{
961
27342
    const uint8_t *buf = avpkt->data;
962
27342
    int buf_size       = avpkt->size;
963
27342
    H264Context *h     = avctx->priv_data;
964
27342
    AVFrame *pict      = data;
965
    int buf_index;
966
    int ret;
967
968
27342
    h->flags = avctx->flags;
969
27342
    h->setup_finished = 0;
970
27342
    h->nb_slice_ctx_queued = 0;
971
972
27342
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
973
974
    /* end of stream, output what is still in the buffers */
975
27342
    if (buf_size == 0)
976
519
        return send_next_delayed_frame(h, pict, got_frame, 0);
977
978

26823
    if (h->is_avc && av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) {
979
        int side_size;
980
4
        uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
981
4
        if (is_extra(side, side_size))
982
4
            ff_h264_decode_extradata(side, side_size,
983
                                     &h->ps, &h->is_avc, &h->nal_length_size,
984
                                     avctx->err_recognition, avctx);
985
    }
986


26823
    if (h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC) {
987
        if (is_extra(buf, buf_size))
988
            return ff_h264_decode_extradata(buf, buf_size,
989
                                            &h->ps, &h->is_avc, &h->nal_length_size,
990
                                            avctx->err_recognition, avctx);
991
    }
992
993
26823
    buf_index = decode_nal_units(h, buf, buf_size);
994
26823
    if (buf_index < 0)
995
1
        return AVERROR_INVALIDDATA;
996
997

26822
    if (!h->cur_pic_ptr && h->nal_unit_type == H264_NAL_END_SEQUENCE) {
998
        av_assert0(buf_index <= buf_size);
999
        return send_next_delayed_frame(h, pict, got_frame, buf_index);
1000
    }
1001
1002

26822
    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && (!h->cur_pic_ptr || !h->has_slice)) {
1003

653
        if (avctx->skip_frame >= AVDISCARD_NONREF ||
1004
453
            buf_size >= 4 && !memcmp("Q264", buf, 4))
1005
200
            return buf_size;
1006
453
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
1007
453
        return AVERROR_INVALIDDATA;
1008
    }
1009
1010
26169
    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||
1011

756
        (h->mb_y >= h->mb_height && h->mb_height)) {
1012
25713
        if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
1013
            return ret;
1014
1015
        /* Wait for second field. */
1016
25713
        if (h->next_output_pic) {
1017
21880
            ret = finalize_frame(h, pict, h->next_output_pic, got_frame);
1018
21880
            if (ret < 0)
1019
                return ret;
1020
        }
1021
    }
1022
1023

26169
    av_assert0(pict->buf[0] || !*got_frame);
1024
1025
26169
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
1026
1027
26169
    return get_consumed_bytes(buf_index, buf_size);
1028
}
1029
1030
#define OFFSET(x) offsetof(H264Context, x)
1031
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1032
static const AVOption h264_options[] = {
1033
    { "is_avc", "is avc", OFFSET(is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0 },
1034
    { "nal_length_size", "nal_length_size", OFFSET(nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0 },
1035
    { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
1036
    { "x264_build", "Assume this x264 version if no x264 version found in any SEI", OFFSET(x264_build), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VD },
1037
    { NULL },
1038
};
1039
1040
static const AVClass h264_class = {
1041
    .class_name = "H264 Decoder",
1042
    .item_name  = av_default_item_name,
1043
    .option     = h264_options,
1044
    .version    = LIBAVUTIL_VERSION_INT,
1045
};
1046
1047
AVCodec ff_h264_decoder = {
1048
    .name                  = "h264",
1049
    .long_name             = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1050
    .type                  = AVMEDIA_TYPE_VIDEO,
1051
    .id                    = AV_CODEC_ID_H264,
1052
    .priv_data_size        = sizeof(H264Context),
1053
    .init                  = h264_decode_init,
1054
    .close                 = h264_decode_end,
1055
    .decode                = h264_decode_frame,
1056
    .capabilities          = /*AV_CODEC_CAP_DRAW_HORIZ_BAND |*/ AV_CODEC_CAP_DR1 |
1057
                             AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
1058
                             AV_CODEC_CAP_FRAME_THREADS,
1059
    .hw_configs            = (const AVCodecHWConfigInternal*[]) {
1060
#if CONFIG_H264_DXVA2_HWACCEL
1061
                               HWACCEL_DXVA2(h264),
1062
#endif
1063
#if CONFIG_H264_D3D11VA_HWACCEL
1064
                               HWACCEL_D3D11VA(h264),
1065
#endif
1066
#if CONFIG_H264_D3D11VA2_HWACCEL
1067
                               HWACCEL_D3D11VA2(h264),
1068
#endif
1069
#if CONFIG_H264_NVDEC_HWACCEL
1070
                               HWACCEL_NVDEC(h264),
1071
#endif
1072
#if CONFIG_H264_VAAPI_HWACCEL
1073
                               HWACCEL_VAAPI(h264),
1074
#endif
1075
#if CONFIG_H264_VDPAU_HWACCEL
1076
                               HWACCEL_VDPAU(h264),
1077
#endif
1078
#if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
1079
                               HWACCEL_VIDEOTOOLBOX(h264),
1080
#endif
1081
                               NULL
1082
                           },
1083
    .caps_internal         = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_EXPORTS_CROPPING,
1084
    .flush                 = flush_dpb,
1085
    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1086
    .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context),
1087
    .profiles              = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
1088
    .priv_class            = &h264_class,
1089
};