GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/h264dec.c Lines: 454 584 77.7 %
Date: 2019-11-20 04:07:19 Branches: 258 427 60.4 %

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 "libavutil/timer.h"
36
#include "internal.h"
37
#include "bytestream.h"
38
#include "cabac.h"
39
#include "cabac_functions.h"
40
#include "error_resilience.h"
41
#include "avcodec.h"
42
#include "h264.h"
43
#include "h264dec.h"
44
#include "h2645_parse.h"
45
#include "h264data.h"
46
#include "h264chroma.h"
47
#include "h264_mvpred.h"
48
#include "h264_ps.h"
49
#include "golomb.h"
50
#include "hwaccel.h"
51
#include "mathops.h"
52
#include "me_cmp.h"
53
#include "mpegutils.h"
54
#include "profiles.h"
55
#include "rectangle.h"
56
#include "thread.h"
57
58
const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
59
60
10368
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
61
{
62
10368
    H264Context *h = avctx->priv_data;
63

10368
    return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
64
}
65
66
495
static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
67
                              int (*mv)[2][4][2],
68
                              int mb_x, int mb_y, int mb_intra, int mb_skipped)
69
{
70
495
    H264Context *h = opaque;
71
495
    H264SliceContext *sl = &h->slice_ctx[0];
72
73
495
    sl->mb_x = mb_x;
74
495
    sl->mb_y = mb_y;
75
495
    sl->mb_xy = mb_x + mb_y * h->mb_stride;
76
495
    memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
77
    av_assert1(ref >= 0);
78
    /* FIXME: It is possible albeit uncommon that slice references
79
     * differ between slices. We take the easy approach and ignore
80
     * it for now. If this turns out to have any relevance in
81
     * practice then correct remapping should be added. */
82
495
    if (ref >= sl->ref_count[0])
83
99
        ref = 0;
84
495
    if (!sl->ref_list[0][ref].data[0]) {
85
        av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
86
        ref = 0;
87
    }
88
495
    if ((sl->ref_list[0][ref].reference&3) != 3) {
89
        av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
90
        return;
91
    }
92
495
    fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
93
                   2, 2, 2, ref, 1);
94
495
    fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
95
495
    fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
96
495
                   pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
97
495
    sl->mb_mbaff =
98
495
    sl->mb_field_decoding_flag = 0;
99
495
    ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
100
}
101
102
334192
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl,
103
                             int y, int height)
104
{
105
334192
    AVCodecContext *avctx = h->avctx;
106
334192
    const AVFrame   *src  = h->cur_pic.f;
107
334192
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
108
334192
    int vshift = desc->log2_chroma_h;
109
334192
    const int field_pic = h->picture_structure != PICT_FRAME;
110
334192
    if (field_pic) {
111
72339
        height <<= 1;
112
72339
        y      <<= 1;
113
    }
114
115
334192
    height = FFMIN(height, avctx->height - y);
116
117

334192
    if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
118
36196
        return;
119
120
297996
    if (avctx->draw_horiz_band) {
121
        int offset[AV_NUM_DATA_POINTERS];
122
        int i;
123
124
        offset[0] = y * src->linesize[0];
125
        offset[1] =
126
        offset[2] = (y >> vshift) * src->linesize[1];
127
        for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
128
            offset[i] = 0;
129
130
        emms_c();
131
132
        avctx->draw_horiz_band(avctx, src, offset,
133
                               y, h->picture_structure, height);
134
    }
135
}
136
137
1066
void ff_h264_free_tables(H264Context *h)
138
{
139
    int i;
140
141
1066
    av_freep(&h->intra4x4_pred_mode);
142
1066
    av_freep(&h->chroma_pred_mode_table);
143
1066
    av_freep(&h->cbp_table);
144
1066
    av_freep(&h->mvd_table[0]);
145
1066
    av_freep(&h->mvd_table[1]);
146
1066
    av_freep(&h->direct_table);
147
1066
    av_freep(&h->non_zero_count);
148
1066
    av_freep(&h->slice_table_base);
149
1066
    h->slice_table = NULL;
150
1066
    av_freep(&h->list_counts);
151
152
1066
    av_freep(&h->mb2b_xy);
153
1066
    av_freep(&h->mb2br_xy);
154
155
1066
    av_buffer_pool_uninit(&h->qscale_table_pool);
156
1066
    av_buffer_pool_uninit(&h->mb_type_pool);
157
1066
    av_buffer_pool_uninit(&h->motion_val_pool);
158
1066
    av_buffer_pool_uninit(&h->ref_index_pool);
159
160
2134
    for (i = 0; i < h->nb_slice_ctx; i++) {
161
1068
        H264SliceContext *sl = &h->slice_ctx[i];
162
163
1068
        av_freep(&sl->dc_val_base);
164
1068
        av_freep(&sl->er.mb_index2xy);
165
1068
        av_freep(&sl->er.error_status_table);
166
1068
        av_freep(&sl->er.er_temp_buffer);
167
168
1068
        av_freep(&sl->bipred_scratchpad);
169
1068
        av_freep(&sl->edge_emu_buffer);
170
1068
        av_freep(&sl->top_borders[0]);
171
1068
        av_freep(&sl->top_borders[1]);
172
173
1068
        sl->bipred_scratchpad_allocated = 0;
174
1068
        sl->edge_emu_buffer_allocated   = 0;
175
1068
        sl->top_borders_allocated[0]    = 0;
176
1068
        sl->top_borders_allocated[1]    = 0;
177
    }
178
1066
}
179
180
531
int ff_h264_alloc_tables(H264Context *h)
181
{
182
531
    const int big_mb_num = h->mb_stride * (h->mb_height + 1);
183
531
    const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
184
    int x, y;
185
186
531
    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
187
                      row_mb_num, 8 * sizeof(uint8_t), fail)
188
531
    h->slice_ctx[0].intra4x4_pred_mode = h->intra4x4_pred_mode;
189
190

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
191
                      big_mb_num * 48 * sizeof(uint8_t), fail)
192

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base,
193
                      (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
194

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table,
195
                      big_mb_num * sizeof(uint16_t), fail)
196

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
197
                      big_mb_num * sizeof(uint8_t), fail)
198
531
    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[0],
199
                      row_mb_num, 16 * sizeof(uint8_t), fail);
200
531
    FF_ALLOCZ_ARRAY_OR_GOTO(h->avctx, h->mvd_table[1],
201
                      row_mb_num, 16 * sizeof(uint8_t), fail);
202
531
    h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
203
531
    h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
204
205

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table,
206
                      4 * big_mb_num * sizeof(uint8_t), fail);
207

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts,
208
                      big_mb_num * sizeof(uint8_t), fail)
209
210
531
    memset(h->slice_table_base, -1,
211
531
           (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
212
531
    h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
213
214

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy,
215
                      big_mb_num * sizeof(uint32_t), fail);
216

531
    FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy,
217
                      big_mb_num * sizeof(uint32_t), fail);
218
12901
    for (y = 0; y < h->mb_height; y++)
219
696083
        for (x = 0; x < h->mb_width; x++) {
220
683713
            const int mb_xy = x + y * h->mb_stride;
221
683713
            const int b_xy  = 4 * x + 4 * y * h->b_stride;
222
223
683713
            h->mb2b_xy[mb_xy]  = b_xy;
224
683713
            h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
225
        }
226
227
531
    return 0;
228
229
fail:
230
    ff_h264_free_tables(h);
231
    return AVERROR(ENOMEM);
232
}
233
234
/**
235
 * Init context
236
 * Allocate buffers which are not shared amongst multiple threads.
237
 */
238
532
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
239
{
240
532
    ERContext *er = &sl->er;
241
532
    int mb_array_size = h->mb_height * h->mb_stride;
242
532
    int y_size  = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
243
532
    int c_size  = h->mb_stride * (h->mb_height + 1);
244
532
    int yc_size = y_size + 2   * c_size;
245
    int x, y, i;
246
247
532
    sl->ref_cache[0][scan8[5]  + 1] =
248
532
    sl->ref_cache[0][scan8[7]  + 1] =
249
532
    sl->ref_cache[0][scan8[13] + 1] =
250
532
    sl->ref_cache[1][scan8[5]  + 1] =
251
532
    sl->ref_cache[1][scan8[7]  + 1] =
252
532
    sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
253
254
532
    if (sl != h->slice_ctx) {
255
1
        memset(er, 0, sizeof(*er));
256
    } else
257
    if (CONFIG_ERROR_RESILIENCE) {
258
259
        /* init ER */
260
531
        er->avctx          = h->avctx;
261
531
        er->decode_mb      = h264_er_decode_mb;
262
531
        er->opaque         = h;
263
531
        er->quarter_sample = 1;
264
265
531
        er->mb_num      = h->mb_num;
266
531
        er->mb_width    = h->mb_width;
267
531
        er->mb_height   = h->mb_height;
268
531
        er->mb_stride   = h->mb_stride;
269
531
        er->b8_stride   = h->mb_width * 2 + 1;
270
271
        // error resilience code looks cleaner with this
272

531
        FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy,
273
                          (h->mb_num + 1) * sizeof(int), fail);
274
275
12901
        for (y = 0; y < h->mb_height; y++)
276
696083
            for (x = 0; x < h->mb_width; x++)
277
683713
                er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
278
279
531
        er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
280
531
                                                      h->mb_stride + h->mb_width;
281
282

531
        FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table,
283
                          mb_array_size * sizeof(uint8_t), fail);
284
285

531
        FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer,
286
                         h->mb_height * h->mb_stride * (4*sizeof(int) + 1), fail);
287
288

531
        FF_ALLOCZ_OR_GOTO(h->avctx, sl->dc_val_base,
289
                          yc_size * sizeof(int16_t), fail);
290
531
        er->dc_val[0] = sl->dc_val_base + h->mb_width * 2 + 2;
291
531
        er->dc_val[1] = sl->dc_val_base + y_size + h->mb_stride + 1;
292
531
        er->dc_val[2] = er->dc_val[1] + c_size;
293
4226918
        for (i = 0; i < yc_size; i++)
294
4226387
            sl->dc_val_base[i] = 1024;
295
    }
296
297
532
    return 0;
298
299
fail:
300
    return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
301
}
302
303
535
static int h264_init_context(AVCodecContext *avctx, H264Context *h)
304
{
305
    int i;
306
307
535
    h->avctx                 = avctx;
308
535
    h->cur_chroma_format_idc = -1;
309
310
535
    h->width_from_caller     = avctx->width;
311
535
    h->height_from_caller    = avctx->height;
312
313
535
    h->picture_structure     = PICT_FRAME;
314
535
    h->workaround_bugs       = avctx->workaround_bugs;
315
535
    h->flags                 = avctx->flags;
316
535
    h->poc.prev_poc_msb      = 1 << 16;
317
535
    h->recovery_frame        = -1;
318
535
    h->frame_recovered       = 0;
319
535
    h->poc.prev_frame_num    = -1;
320
535
    h->sei.frame_packing.arrangement_cancel_flag = -1;
321
535
    h->sei.unregistered.x264_build = -1;
322
323
535
    h->next_outputed_poc = INT_MIN;
324
9095
    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
325
8560
        h->last_pocs[i] = INT_MIN;
326
327
535
    ff_h264_sei_uninit(&h->sei);
328
329
535
    avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
330
331
535
    h->nb_slice_ctx = (avctx->active_thread_type & FF_THREAD_SLICE) ? avctx->thread_count : 1;
332
535
    h->slice_ctx = av_mallocz_array(h->nb_slice_ctx, sizeof(*h->slice_ctx));
333
535
    if (!h->slice_ctx) {
334
        h->nb_slice_ctx = 0;
335
        return AVERROR(ENOMEM);
336
    }
337
338
19795
    for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
339
19260
        h->DPB[i].f = av_frame_alloc();
340
19260
        if (!h->DPB[i].f)
341
            return AVERROR(ENOMEM);
342
    }
343
344
535
    h->cur_pic.f = av_frame_alloc();
345
535
    if (!h->cur_pic.f)
346
        return AVERROR(ENOMEM);
347
348
535
    h->last_pic_for_ec.f = av_frame_alloc();
349
535
    if (!h->last_pic_for_ec.f)
350
        return AVERROR(ENOMEM);
351
352
1071
    for (i = 0; i < h->nb_slice_ctx; i++)
353
536
        h->slice_ctx[i].h264 = h;
354
355
535
    return 0;
356
}
357
358
535
static av_cold int h264_decode_end(AVCodecContext *avctx)
359
{
360
535
    H264Context *h = avctx->priv_data;
361
    int i;
362
363
535
    ff_h264_remove_all_refs(h);
364
535
    ff_h264_free_tables(h);
365
366
19795
    for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
367
19260
        ff_h264_unref_picture(h, &h->DPB[i]);
368
19260
        av_frame_free(&h->DPB[i].f);
369
    }
370
535
    memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
371
372
535
    h->cur_pic_ptr = NULL;
373
374
535
    av_freep(&h->slice_ctx);
375
535
    h->nb_slice_ctx = 0;
376
377
535
    ff_h264_sei_uninit(&h->sei);
378
535
    ff_h264_ps_uninit(&h->ps);
379
380
535
    ff_h2645_packet_uninit(&h->pkt);
381
382
535
    ff_h264_unref_picture(h, &h->cur_pic);
383
535
    av_frame_free(&h->cur_pic.f);
384
535
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
385
535
    av_frame_free(&h->last_pic_for_ec.f);
386
387
535
    return 0;
388
}
389
390
static AVOnce h264_vlc_init = AV_ONCE_INIT;
391
392
527
static av_cold int h264_decode_init(AVCodecContext *avctx)
393
{
394
527
    H264Context *h = avctx->priv_data;
395
    int ret;
396
397
527
    ret = h264_init_context(avctx, h);
398
527
    if (ret < 0)
399
        return ret;
400
401
527
    ret = ff_thread_once(&h264_vlc_init, ff_h264_decode_init_vlc);
402
527
    if (ret != 0) {
403
        av_log(avctx, AV_LOG_ERROR, "pthread_once has failed.");
404
        return AVERROR_UNKNOWN;
405
    }
406
407
527
    if (avctx->ticks_per_frame == 1) {
408
527
        if(h->avctx->time_base.den < INT_MAX/2) {
409
527
            h->avctx->time_base.den *= 2;
410
        } else
411
            h->avctx->time_base.num /= 2;
412
    }
413
527
    avctx->ticks_per_frame = 2;
414
415

527
    if (avctx->extradata_size > 0 && avctx->extradata) {
416
307
        ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
417
                                       &h->ps, &h->is_avc, &h->nal_length_size,
418
                                       avctx->err_recognition, avctx);
419
307
        if (ret < 0) {
420
            h264_decode_end(avctx);
421
            return ret;
422
        }
423
    }
424
425

527
    if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
426
        h->avctx->has_b_frames < h->ps.sps->num_reorder_frames) {
427
        h->avctx->has_b_frames = h->ps.sps->num_reorder_frames;
428
    }
429
430
527
    avctx->internal->allocate_progress = 1;
431
432
527
    ff_h264_flush_change(h);
433
434

527
    if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
435
1
        h->enable_er = 0;
436
437

527
    if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
438
        av_log(avctx, AV_LOG_WARNING,
439
               "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
440
               "Use it at your own risk\n");
441
    }
442
443
527
    return 0;
444
}
445
446
#if HAVE_THREADS
447
8
static int decode_init_thread_copy(AVCodecContext *avctx)
448
{
449
8
    H264Context *h = avctx->priv_data;
450
    int ret;
451
452
8
    if (!avctx->internal->is_copy)
453
        return 0;
454
455
8
    memset(h, 0, sizeof(*h));
456
457
8
    ret = h264_init_context(avctx, h);
458
8
    if (ret < 0)
459
        return ret;
460
461
8
    h->context_initialized = 0;
462
463
8
    return 0;
464
}
465
#endif
466
467
/**
468
 * instantaneous decoder refresh.
469
 */
470
1550
static void idr(H264Context *h)
471
{
472
    int i;
473
1550
    ff_h264_remove_all_refs(h);
474
1550
    h->poc.prev_frame_num        =
475
1550
    h->poc.prev_frame_num_offset = 0;
476
1550
    h->poc.prev_poc_msb          = 1<<16;
477
1550
    h->poc.prev_poc_lsb          = -1;
478
26350
    for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
479
24800
        h->last_pocs[i] = INT_MIN;
480
1550
}
481
482
/* forget old pics after a seek */
483
533
void ff_h264_flush_change(H264Context *h)
484
{
485
    int i, j;
486
487
533
    h->next_outputed_poc = INT_MIN;
488
533
    h->prev_interlaced_frame = 1;
489
533
    idr(h);
490
491
533
    h->poc.prev_frame_num = -1;
492
533
    if (h->cur_pic_ptr) {
493
        h->cur_pic_ptr->reference = 0;
494
        for (j=i=0; h->delayed_pic[i]; i++)
495
            if (h->delayed_pic[i] != h->cur_pic_ptr)
496
                h->delayed_pic[j++] = h->delayed_pic[i];
497
        h->delayed_pic[j] = NULL;
498
    }
499
533
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
500
501
533
    h->first_field = 0;
502
533
    h->recovery_frame = -1;
503
533
    h->frame_recovered = 0;
504
533
    h->current_slice = 0;
505
533
    h->mmco_reset = 1;
506
533
}
507
508
/* forget old pics after a seek */
509
static void flush_dpb(AVCodecContext *avctx)
510
{
511
    H264Context *h = avctx->priv_data;
512
    int i;
513
514
    memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
515
516
    ff_h264_flush_change(h);
517
    ff_h264_sei_uninit(&h->sei);
518
519
    for (i = 0; i < H264_MAX_PICTURE_COUNT; i++)
520
        ff_h264_unref_picture(h, &h->DPB[i]);
521
    h->cur_pic_ptr = NULL;
522
    ff_h264_unref_picture(h, &h->cur_pic);
523
524
    h->mb_y = 0;
525
526
    ff_h264_free_tables(h);
527
    h->context_initialized = 0;
528
}
529
530
32
static int get_last_needed_nal(H264Context *h)
531
{
532
32
    int nals_needed = 0;
533
32
    int first_slice = 0;
534
    int i, ret;
535
536
65
    for (i = 0; i < h->pkt.nb_nals; i++) {
537
33
        H2645NAL *nal = &h->pkt.nals[i];
538
        GetBitContext gb;
539
540
        /* packets can sometimes contain multiple PPS/SPS,
541
         * e.g. two PAFF field pictures in one packet, or a demuxer
542
         * which splits NALs strangely if so, when frame threading we
543
         * can't start the next thread until we've read all of them */
544
33
        switch (nal->type) {
545
        case H264_NAL_SPS:
546
        case H264_NAL_PPS:
547
            nals_needed = i;
548
            break;
549
32
        case H264_NAL_DPA:
550
        case H264_NAL_IDR_SLICE:
551
        case H264_NAL_SLICE:
552
32
            ret = init_get_bits8(&gb, nal->data + 1, nal->size - 1);
553
32
            if (ret < 0) {
554
                av_log(h->avctx, AV_LOG_ERROR, "Invalid zero-sized VCL NAL unit\n");
555
                if (h->avctx->err_recognition & AV_EF_EXPLODE)
556
                    return ret;
557
558
                break;
559
            }
560

32
            if (!get_ue_golomb_long(&gb) ||  // first_mb_in_slice
561
                !first_slice ||
562
                first_slice != nal->type)
563
32
                nals_needed = i;
564
32
            if (!first_slice)
565
32
                first_slice = nal->type;
566
        }
567
    }
568
569
32
    return nals_needed;
570
}
571
572
static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
573
{
574
    av_log(logctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
575
    av_log(logctx, AV_LOG_DEBUG, "  green_metadata_type: %d\n", gm->green_metadata_type);
576
577
    if (gm->green_metadata_type == 0) {
578
        av_log(logctx, AV_LOG_DEBUG, "  green_metadata_period_type: %d\n", gm->period_type);
579
580
        if (gm->period_type == 2)
581
            av_log(logctx, AV_LOG_DEBUG, "  green_metadata_num_seconds: %d\n", gm->num_seconds);
582
        else if (gm->period_type == 3)
583
            av_log(logctx, AV_LOG_DEBUG, "  green_metadata_num_pictures: %d\n", gm->num_pictures);
584
585
        av_log(logctx, AV_LOG_DEBUG, "  SEI GREEN Complexity Metrics: %f %f %f %f\n",
586
               (float)gm->percent_non_zero_macroblocks/255,
587
               (float)gm->percent_intra_coded_macroblocks/255,
588
               (float)gm->percent_six_tap_filtering/255,
589
               (float)gm->percent_alpha_point_deblocking_instance/255);
590
591
    } else if (gm->green_metadata_type == 1) {
592
        av_log(logctx, AV_LOG_DEBUG, "  xsd_metric_type: %d\n", gm->xsd_metric_type);
593
594
        if (gm->xsd_metric_type == 0)
595
            av_log(logctx, AV_LOG_DEBUG, "  xsd_metric_value: %f\n",
596
                   (float)gm->xsd_metric_value/100);
597
    }
598
}
599
600
26698
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
601
{
602
26698
    AVCodecContext *const avctx = h->avctx;
603
26698
    int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
604
26698
    int idr_cleared=0;
605
26698
    int i, ret = 0;
606
607
26698
    h->has_slice = 0;
608
26698
    h->nal_unit_type= 0;
609
610
26698
    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
611
25942
        h->current_slice = 0;
612
25942
        if (!h->first_field) {
613
22738
            h->cur_pic_ptr = NULL;
614
22738
            ff_h264_sei_uninit(&h->sei);
615
        }
616
    }
617
618
26698
    if (h->nal_length_size == 4) {
619

2701
        if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
620
            h->is_avc = 0;
621

2701
        }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
622
2701
            h->is_avc = 1;
623
    }
624
625
26698
    ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc, h->nal_length_size,
626
26698
                                avctx->codec_id, avctx->flags2 & AV_CODEC_FLAG2_FAST, 0);
627
26698
    if (ret < 0) {
628
1
        av_log(avctx, AV_LOG_ERROR,
629
               "Error splitting the input into NAL units.\n");
630
1
        return ret;
631
    }
632
633
26697
    if (avctx->active_thread_type & FF_THREAD_FRAME)
634
32
        nals_needed = get_last_needed_nal(h);
635
26697
    if (nals_needed < 0)
636
        return nals_needed;
637
638
73385
    for (i = 0; i < h->pkt.nb_nals; i++) {
639
46688
        H2645NAL *nal = &h->pkt.nals[i];
640
        int max_slice_ctx, err;
641
642
46688
        if (avctx->skip_frame >= AVDISCARD_NONREF &&
643

928
            nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
644
504
            continue;
645
646
        // FIXME these should stop being context-global variables
647
46184
        h->nal_ref_idc   = nal->ref_idc;
648
46184
        h->nal_unit_type = nal->type;
649
650
46184
        err = 0;
651


46184
        switch (nal->type) {
652
2072
        case H264_NAL_IDR_SLICE:
653
2072
            if ((nal->data[1] & 0xFC) == 0x98) {
654
                av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
655
                h->next_outputed_poc = INT_MIN;
656
                ret = -1;
657
                goto end;
658
            }
659
2072
            if(!idr_cleared) {
660
1017
                idr(h); // FIXME ensure we don't lose some frames if there is reordering
661
            }
662
2072
            idr_cleared = 1;
663
2072
            h->has_recovery_point = 1;
664
34117
        case H264_NAL_SLICE:
665
34117
            h->has_slice = 1;
666
667
34117
            if ((err = ff_h264_queue_decode_slice(h, nal))) {
668
23
                H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
669
23
                sl->ref_count[0] = sl->ref_count[1] = 0;
670
23
                break;
671
            }
672
673
34094
            if (h->current_slice == 1) {
674

25900
                if (avctx->active_thread_type & FF_THREAD_FRAME &&
675

32
                    i >= nals_needed && !h->setup_finished && h->cur_pic_ptr) {
676
32
                    ff_thread_finish_setup(avctx);
677
32
                    h->setup_finished = 1;
678
                }
679
680

25900
                if (h->avctx->hwaccel &&
681
                    (ret = h->avctx->hwaccel->start_frame(h->avctx, buf, buf_size)) < 0)
682
                    goto end;
683
            }
684
685
34094
            max_slice_ctx = avctx->hwaccel ? 1 : h->nb_slice_ctx;
686
34094
            if (h->nb_slice_ctx_queued == max_slice_ctx) {
687
33263
                if (h->avctx->hwaccel) {
688
                    ret = avctx->hwaccel->decode_slice(avctx, nal->raw_data, nal->raw_size);
689
                    h->nb_slice_ctx_queued = 0;
690
                } else
691
33263
                    ret = ff_h264_execute_decode_slices(h);
692

33263
                if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
693
                    goto end;
694
            }
695
34094
            break;
696
        case H264_NAL_DPA:
697
        case H264_NAL_DPB:
698
        case H264_NAL_DPC:
699
            avpriv_request_sample(avctx, "data partitioning");
700
            break;
701
2269
        case H264_NAL_SEI:
702
2269
            ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
703

2269
            h->has_recovery_point = h->has_recovery_point || h->sei.recovery_point.recovery_frame_cnt != -1;
704
2269
            if (avctx->debug & FF_DEBUG_GREEN_MD)
705
                debug_green_metadata(&h->sei.green_metadata, h->avctx);
706

2269
            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
707
                goto end;
708
2269
            break;
709
977
        case H264_NAL_SPS: {
710
977
            GetBitContext tmp_gb = nal->gb;
711

977
            if (avctx->hwaccel && avctx->hwaccel->decode_params) {
712
                ret = avctx->hwaccel->decode_params(avctx,
713
                                                    nal->type,
714
                                                    nal->raw_data,
715
                                                    nal->raw_size);
716
                if (ret < 0)
717
                    goto end;
718
            }
719
977
            if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
720
977
                break;
721
2
            av_log(h->avctx, AV_LOG_DEBUG,
722
                   "SPS decoding failure, trying again with the complete NAL\n");
723
2
            init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
724
2
            if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
725
2
                break;
726
            ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
727
            break;
728
        }
729
6556
        case H264_NAL_PPS:
730

6556
            if (avctx->hwaccel && avctx->hwaccel->decode_params) {
731
                ret = avctx->hwaccel->decode_params(avctx,
732
                                                    nal->type,
733
                                                    nal->raw_data,
734
                                                    nal->raw_size);
735
                if (ret < 0)
736
                    goto end;
737
            }
738
6556
            ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
739
                                                       nal->size_bits);
740

6556
            if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
741
                goto end;
742
6556
            break;
743
2265
        case H264_NAL_AUD:
744
        case H264_NAL_END_SEQUENCE:
745
        case H264_NAL_END_STREAM:
746
        case H264_NAL_FILLER_DATA:
747
        case H264_NAL_SPS_EXT:
748
        case H264_NAL_AUXILIARY_SLICE:
749
2265
            break;
750
        default:
751
            av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
752
                   nal->type, nal->size_bits);
753
        }
754
755
46184
        if (err < 0) {
756
23
            av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
757
        }
758
    }
759
760
26697
    ret = ff_h264_execute_decode_slices(h);
761

26697
    if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
762
        goto end;
763
764
    // set decode_error_flags to allow users to detect concealed decoding errors
765

26697
    if ((ret < 0 || h->slice_ctx->er.error_occurred) && h->cur_pic_ptr) {
766
9
        h->cur_pic_ptr->f->decode_error_flags |= FF_DECODE_ERROR_DECODE_SLICES;
767
    }
768
769
26697
    ret = 0;
770
26697
end:
771
772
#if CONFIG_ERROR_RESILIENCE
773
    /*
774
     * FIXME: Error handling code does not seem to support interlaced
775
     * when slices span multiple rows
776
     * The ff_er_add_slice calls don't work right for bottom
777
     * fields; they cause massive erroneous error concealing
778
     * Error marking covers both fields (top and bottom).
779
     * This causes a mismatched s->error_count
780
     * and a bad error table. Further, the error count goes to
781
     * INT_MAX when called for bottom field, because mb_y is
782
     * past end by one (callers fault) and resync_mb_y != 0
783
     * causes problems for the first MB line, too.
784
     */
785

26697
    if (!FIELD_PICTURE(h) && h->current_slice &&
786
19880
        h->ps.sps == (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data &&
787
19880
        h->enable_er) {
788
789
19130
        H264SliceContext *sl = h->slice_ctx;
790

19130
        int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
791
792
19130
        ff_h264_set_erpic(&sl->er.cur_pic, h->cur_pic_ptr);
793
794
19130
        if (use_last_pic) {
795
490
            ff_h264_set_erpic(&sl->er.last_pic, &h->last_pic_for_ec);
796
490
            sl->ref_list[0][0].parent = &h->last_pic_for_ec;
797
490
            memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
798
490
            memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
799
490
            sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
800
18640
        } else if (sl->ref_count[0]) {
801
16735
            ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
802
        } else
803
1905
            ff_h264_set_erpic(&sl->er.last_pic, NULL);
804
805
19130
        if (sl->ref_count[1])
806
16735
            ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
807
808
19130
        sl->er.ref_count = sl->ref_count[0];
809
810
19130
        ff_er_frame_end(&sl->er);
811
19130
        if (use_last_pic)
812
490
            memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
813
    }
814
#endif /* CONFIG_ERROR_RESILIENCE */
815
    /* clean up */
816

26697
    if (h->cur_pic_ptr && !h->droppable && h->has_slice) {
817
17195
        ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
818
17195
                                  h->picture_structure == PICT_BOTTOM_FIELD);
819
    }
820
821
26697
    return (ret < 0) ? ret : buf_size;
822
}
823
824
/**
825
 * Return the number of bytes consumed for building the current frame.
826
 */
827
26163
static int get_consumed_bytes(int pos, int buf_size)
828
{
829
26163
    if (pos == 0)
830
        pos = 1;        // avoid infinite loops (I doubt that is needed but...)
831
26163
    if (pos + 10 > buf_size)
832
26163
        pos = buf_size; // oops ;)
833
834
26163
    return pos;
835
}
836
837
22150
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
838
{
839
22150
    AVFrame *src = srcp->f;
840
    int ret;
841
842
22150
    ret = av_frame_ref(dst, src);
843
22150
    if (ret < 0)
844
        return ret;
845
846
22150
    av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(&h->sei.frame_packing), 0);
847
848
22150
    if (srcp->sei_recovery_frame_cnt == 0)
849
23
        dst->key_frame = 1;
850
851
22150
    return 0;
852
}
853
854
4
static int is_extra(const uint8_t *buf, int buf_size)
855
{
856
4
    int cnt= buf[5]&0x1f;
857
4
    const uint8_t *p= buf+6;
858
4
    if (!cnt)
859
        return 0;
860
8
    while(cnt--){
861
4
        int nalsize= AV_RB16(p) + 2;
862

4
        if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
863
            return 0;
864
4
        p += nalsize;
865
    }
866
4
    cnt = *(p++);
867
4
    if(!cnt)
868
        return 0;
869
8
    while(cnt--){
870
4
        int nalsize= AV_RB16(p) + 2;
871

4
        if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
872
            return 0;
873
4
        p += nalsize;
874
    }
875
4
    return 1;
876
}
877
878
22150
static int finalize_frame(H264Context *h, AVFrame *dst, H264Picture *out, int *got_frame)
879
{
880
    int ret;
881
882
22150
    if (((h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
883
22150
         (h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
884
22150
         out->recovered)) {
885
886
22150
        if (!h->avctx->hwaccel &&
887
22150
            (out->field_poc[0] == INT_MAX ||
888
22150
             out->field_poc[1] == INT_MAX)
889
           ) {
890
            int p;
891
            AVFrame *f = out->f;
892
            int field = out->field_poc[0] == INT_MAX;
893
            uint8_t *dst_data[4];
894
            int linesizes[4];
895
            const uint8_t *src_data[4];
896
897
            av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
898
899
            for (p = 0; p<4; p++) {
900
                dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
901
                src_data[p] = f->data[p] +  field   *f->linesize[p];
902
                linesizes[p] = 2*f->linesize[p];
903
            }
904
905
            av_image_copy(dst_data, linesizes, src_data, linesizes,
906
                          f->format, f->width, f->height>>1);
907
        }
908
909
22150
        ret = output_frame(h, dst, out);
910
22150
        if (ret < 0)
911
            return ret;
912
913
22150
        *got_frame = 1;
914
915
        if (CONFIG_MPEGVIDEO) {
916
22150
            ff_print_debug_info2(h->avctx, dst, NULL,
917
                                 out->mb_type,
918
                                 out->qscale_table,
919
22150
                                 out->motion_val,
920
                                 NULL,
921
                                 h->mb_width, h->mb_height, h->mb_stride, 1);
922
        }
923
    }
924
925
22150
    return 0;
926
}
927
928
518
static int send_next_delayed_frame(H264Context *h, AVFrame *dst_frame,
929
                                   int *got_frame, int buf_index)
930
{
931
    int ret, i, out_idx;
932
518
    H264Picture *out = h->delayed_pic[0];
933
934
518
    h->cur_pic_ptr = NULL;
935
518
    h->first_field = 0;
936
937
518
    out_idx = 0;
938
518
    for (i = 1;
939
1038
         h->delayed_pic[i] &&
940
527
         !h->delayed_pic[i]->f->key_frame &&
941
520
         !h->delayed_pic[i]->mmco_reset;
942
520
         i++)
943
520
        if (h->delayed_pic[i]->poc < out->poc) {
944
103
            out     = h->delayed_pic[i];
945
103
            out_idx = i;
946
        }
947
948
1262
    for (i = out_idx; h->delayed_pic[i]; i++)
949
744
        h->delayed_pic[i] = h->delayed_pic[i + 1];
950
951
518
    if (out) {
952
263
        out->reference &= ~DELAYED_PIC_REF;
953
263
        ret = finalize_frame(h, dst_frame, out, got_frame);
954
263
        if (ret < 0)
955
            return ret;
956
    }
957
958
518
    return buf_index;
959
}
960
961
27216
static int h264_decode_frame(AVCodecContext *avctx, void *data,
962
                             int *got_frame, AVPacket *avpkt)
963
{
964
27216
    const uint8_t *buf = avpkt->data;
965
27216
    int buf_size       = avpkt->size;
966
27216
    H264Context *h     = avctx->priv_data;
967
27216
    AVFrame *pict      = data;
968
    int buf_index;
969
    int ret;
970
971
27216
    h->flags = avctx->flags;
972
27216
    h->setup_finished = 0;
973
27216
    h->nb_slice_ctx_queued = 0;
974
975
27216
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
976
977
    /* end of stream, output what is still in the buffers */
978
27216
    if (buf_size == 0)
979
518
        return send_next_delayed_frame(h, pict, got_frame, 0);
980
981

26698
    if (h->is_avc && av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, NULL)) {
982
        int side_size;
983
4
        uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
984
4
        if (is_extra(side, side_size))
985
4
            ff_h264_decode_extradata(side, side_size,
986
                                     &h->ps, &h->is_avc, &h->nal_length_size,
987
                                     avctx->err_recognition, avctx);
988
    }
989


26698
    if (h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC) {
990
        if (is_extra(buf, buf_size))
991
            return ff_h264_decode_extradata(buf, buf_size,
992
                                            &h->ps, &h->is_avc, &h->nal_length_size,
993
                                            avctx->err_recognition, avctx);
994
    }
995
996
26698
    buf_index = decode_nal_units(h, buf, buf_size);
997
26698
    if (buf_index < 0)
998
1
        return AVERROR_INVALIDDATA;
999
1000

26697
    if (!h->cur_pic_ptr && h->nal_unit_type == H264_NAL_END_SEQUENCE) {
1001
        av_assert0(buf_index <= buf_size);
1002
        return send_next_delayed_frame(h, pict, got_frame, buf_index);
1003
    }
1004
1005

26697
    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && (!h->cur_pic_ptr || !h->has_slice)) {
1006

534
        if (avctx->skip_frame >= AVDISCARD_NONREF ||
1007
334
            buf_size >= 4 && !memcmp("Q264", buf, 4))
1008
200
            return buf_size;
1009
334
        av_log(avctx, AV_LOG_ERROR, "no frame!\n");
1010
334
        return AVERROR_INVALIDDATA;
1011
    }
1012
1013
26163
    if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||
1014

756
        (h->mb_y >= h->mb_height && h->mb_height)) {
1015
25707
        if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
1016
            return ret;
1017
1018
        /* Wait for second field. */
1019
25707
        if (h->next_output_pic) {
1020
21887
            ret = finalize_frame(h, pict, h->next_output_pic, got_frame);
1021
21887
            if (ret < 0)
1022
                return ret;
1023
        }
1024
    }
1025
1026

26163
    av_assert0(pict->buf[0] || !*got_frame);
1027
1028
26163
    ff_h264_unref_picture(h, &h->last_pic_for_ec);
1029
1030
26163
    return get_consumed_bytes(buf_index, buf_size);
1031
}
1032
1033
#define OFFSET(x) offsetof(H264Context, x)
1034
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1035
static const AVOption h264_options[] = {
1036
    { "is_avc", "is avc", OFFSET(is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0 },
1037
    { "nal_length_size", "nal_length_size", OFFSET(nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0 },
1038
    { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
1039
    { "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 },
1040
    { NULL },
1041
};
1042
1043
static const AVClass h264_class = {
1044
    .class_name = "H264 Decoder",
1045
    .item_name  = av_default_item_name,
1046
    .option     = h264_options,
1047
    .version    = LIBAVUTIL_VERSION_INT,
1048
};
1049
1050
AVCodec ff_h264_decoder = {
1051
    .name                  = "h264",
1052
    .long_name             = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1053
    .type                  = AVMEDIA_TYPE_VIDEO,
1054
    .id                    = AV_CODEC_ID_H264,
1055
    .priv_data_size        = sizeof(H264Context),
1056
    .init                  = h264_decode_init,
1057
    .close                 = h264_decode_end,
1058
    .decode                = h264_decode_frame,
1059
    .capabilities          = /*AV_CODEC_CAP_DRAW_HORIZ_BAND |*/ AV_CODEC_CAP_DR1 |
1060
                             AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
1061
                             AV_CODEC_CAP_FRAME_THREADS,
1062
    .hw_configs            = (const AVCodecHWConfigInternal*[]) {
1063
#if CONFIG_H264_DXVA2_HWACCEL
1064
                               HWACCEL_DXVA2(h264),
1065
#endif
1066
#if CONFIG_H264_D3D11VA_HWACCEL
1067
                               HWACCEL_D3D11VA(h264),
1068
#endif
1069
#if CONFIG_H264_D3D11VA2_HWACCEL
1070
                               HWACCEL_D3D11VA2(h264),
1071
#endif
1072
#if CONFIG_H264_NVDEC_HWACCEL
1073
                               HWACCEL_NVDEC(h264),
1074
#endif
1075
#if CONFIG_H264_VAAPI_HWACCEL
1076
                               HWACCEL_VAAPI(h264),
1077
#endif
1078
#if CONFIG_H264_VDPAU_HWACCEL
1079
                               HWACCEL_VDPAU(h264),
1080
#endif
1081
#if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
1082
                               HWACCEL_VIDEOTOOLBOX(h264),
1083
#endif
1084
                               NULL
1085
                           },
1086
    .caps_internal         = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_EXPORTS_CROPPING,
1087
    .flush                 = flush_dpb,
1088
    .init_thread_copy      = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1089
    .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context),
1090
    .profiles              = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
1091
    .priv_class            = &h264_class,
1092
};