aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/avcodec.c
blob: 1fa8704c9dc13a6ab91e7d670fa1e2e1473ef456 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
/*
 * AVCodecContext functions for libavcodec
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * AVCodecContext functions for libavcodec
 */

#include "config.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/emms.h"
#include "libavutil/fifo.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "avcodec_internal.h"
#include "bsf.h"
#include "codec_desc.h"
#include "codec_internal.h"
#include "decode.h"
#include "encode.h"
#include "frame_thread_encoder.h"
#include "hwconfig.h"
#include "internal.h"
#include "refstruct.h"
#include "thread.h"

/**
 * Maximum size in bytes of extradata.
 * This value was chosen such that every bit of the buffer is
 * addressable by a 32-bit signed integer as used by get_bits.
 */
#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)

const SideDataMap ff_sd_global_map[] = {
    { AV_PKT_DATA_REPLAYGAIN ,                AV_FRAME_DATA_REPLAYGAIN },
    { AV_PKT_DATA_DISPLAYMATRIX,              AV_FRAME_DATA_DISPLAYMATRIX },
    { AV_PKT_DATA_SPHERICAL,                  AV_FRAME_DATA_SPHERICAL },
    { AV_PKT_DATA_STEREO3D,                   AV_FRAME_DATA_STEREO3D },
    { AV_PKT_DATA_AUDIO_SERVICE_TYPE,         AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
    { AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
    { AV_PKT_DATA_CONTENT_LIGHT_LEVEL,        AV_FRAME_DATA_CONTENT_LIGHT_LEVEL },
    { AV_PKT_DATA_ICC_PROFILE,                AV_FRAME_DATA_ICC_PROFILE },
    { AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT,AV_FRAME_DATA_AMBIENT_VIEWING_ENVIRONMENT },
    { AV_PKT_DATA_NB },
};


int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
    size_t i;

    for (i = 0; i < count; i++) {
        size_t offset = i * size;
        int r = func(c, FF_PTR_ADD((char *)arg, offset));
        if (ret)
            ret[i] = r;
    }
    emms_c();
    return 0;
}

int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
{
    int i;

    for (i = 0; i < count; i++) {
        int r = func(c, arg, i, 0);
        if (ret)
            ret[i] = r;
    }
    emms_c();
    return 0;
}

static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;

static void lock_avcodec(const FFCodec *codec)
{
    if (codec->caps_internal & FF_CODEC_CAP_NOT_INIT_THREADSAFE && codec->init)
        ff_mutex_lock(&codec_mutex);
}

static void unlock_avcodec(const FFCodec *codec)
{
    if (codec->caps_internal & FF_CODEC_CAP_NOT_INIT_THREADSAFE && codec->init)
        ff_mutex_unlock(&codec_mutex);
}

static int64_t get_bit_rate(AVCodecContext *ctx)
{
    int64_t bit_rate;
    int bits_per_sample;

    switch (ctx->codec_type) {
    case AVMEDIA_TYPE_VIDEO:
    case AVMEDIA_TYPE_DATA:
    case AVMEDIA_TYPE_SUBTITLE:
    case AVMEDIA_TYPE_ATTACHMENT:
        bit_rate = ctx->bit_rate;
        break;
    case AVMEDIA_TYPE_AUDIO:
        bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
        if (bits_per_sample) {
            bit_rate = ctx->sample_rate * (int64_t)ctx->ch_layout.nb_channels;
            if (bit_rate > INT64_MAX / bits_per_sample) {
                bit_rate = 0;
            } else
                bit_rate *= bits_per_sample;
        } else
            bit_rate = ctx->bit_rate;
        break;
    default:
        bit_rate = 0;
        break;
    }
    return bit_rate;
}

int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
    int ret = 0;
    AVCodecInternal *avci;
    const FFCodec *codec2;
    const AVDictionaryEntry *e;

    if (avcodec_is_open(avctx))
        return 0;

    if (!codec && !avctx->codec) {
        av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
        return AVERROR(EINVAL);
    }
    if (codec && avctx->codec && codec != avctx->codec) {
        av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
                                    "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
        return AVERROR(EINVAL);
    }
    if (!codec)
        codec = avctx->codec;
    codec2 = ffcodec(codec);

    if ((avctx->codec_type != AVMEDIA_TYPE_UNKNOWN && avctx->codec_type != codec->type) ||
        (avctx->codec_id   != AV_CODEC_ID_NONE     && avctx->codec_id   != codec->id)) {
        av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
        return AVERROR(EINVAL);
    }

    avctx->codec_type = codec->type;
    avctx->codec_id   = codec->id;
    avctx->codec      = codec;

    if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
        return AVERROR(EINVAL);

    // set the whitelist from provided options dict,
    // so we can check it immediately
    e = options ? av_dict_get(*options, "codec_whitelist", NULL, 0) : NULL;
    if (e) {
        ret = av_opt_set(avctx, e->key, e->value, 0);
        if (ret < 0)
            return ret;
    }

    if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
        av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
        return AVERROR(EINVAL);
    }

    avci = av_codec_is_decoder(codec) ?
        ff_decode_internal_alloc()    :
        ff_encode_internal_alloc();
    if (!avci) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
    avctx->internal = avci;

    avci->buffer_frame = av_frame_alloc();
    avci->buffer_pkt = av_packet_alloc();
    if (!avci->buffer_frame || !avci->buffer_pkt) {
        ret = AVERROR(ENOMEM);
        goto free_and_end;
    }

    if (codec2->priv_data_size > 0) {
        if (!avctx->priv_data) {
            avctx->priv_data = av_mallocz(codec2->priv_data_size);
            if (!avctx->priv_data) {
                ret = AVERROR(ENOMEM);
                goto free_and_end;
            }
            if (codec->priv_class) {
                *(const AVClass **)avctx->priv_data = codec->priv_class;
                av_opt_set_defaults(avctx->priv_data);
            }
        }
    } else {
        avctx->priv_data = NULL;
    }

    ret = av_opt_set_dict2(avctx, options, AV_OPT_SEARCH_CHILDREN);
    if (ret < 0)
        goto free_and_end;

    // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
    if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
          (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
        if (avctx->coded_width && avctx->coded_height)
            ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
        else if (avctx->width && avctx->height)
            ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
        if (ret < 0)
            goto free_and_end;
    }

    if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
        && (  av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
           || av_image_check_size2(avctx->width,       avctx->height,       avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
        av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
        ff_set_dimensions(avctx, 0, 0);
    }

    if (avctx->width > 0 && avctx->height > 0) {
        if (av_image_check_sar(avctx->width, avctx->height,
                               avctx->sample_aspect_ratio) < 0) {
            av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
                   avctx->sample_aspect_ratio.num,
                   avctx->sample_aspect_ratio.den);
            avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
        }
    }

    if (avctx->sample_rate < 0) {
        av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
        ret = AVERROR(EINVAL);
        goto free_and_end;
    }
    if (avctx->block_align < 0) {
        av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
        ret = AVERROR(EINVAL);
        goto free_and_end;
    }

    /* AV_CODEC_CAP_CHANNEL_CONF is a decoder-only flag; so the code below
     * in particular checks that nb_channels is set for all audio encoders. */
    if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && !avctx->ch_layout.nb_channels
        && !(codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)) {
        av_log(avctx, AV_LOG_ERROR, "%s requires channel layout to be set\n",
               av_codec_is_decoder(codec) ? "Decoder" : "Encoder");
        ret = AVERROR(EINVAL);
        goto free_and_end;
    }
    if (avctx->ch_layout.nb_channels && !av_channel_layout_check(&avctx->ch_layout)) {
        av_log(avctx, AV_LOG_ERROR, "Invalid channel layout\n");
        ret = AVERROR(EINVAL);
        goto free_and_end;
    }
    if (avctx->ch_layout.nb_channels > FF_SANE_NB_CHANNELS) {
        av_log(avctx, AV_LOG_ERROR, "Too many channels: %d\n", avctx->ch_layout.nb_channels);
        ret = AVERROR(EINVAL);
        goto free_and_end;
    }

    avctx->frame_num = 0;
    avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);

    if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
        avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
        const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
        const AVCodec *codec2;
        av_log(avctx, AV_LOG_ERROR,
               "The %s '%s' is experimental but experimental codecs are not enabled, "
               "add '-strict %d' if you want to use it.\n",
               codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
        codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
        if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
            av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
                codec_string, codec2->name);
        ret = AVERROR_EXPERIMENTAL;
        goto free_and_end;
    }

    if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
        (!avctx->time_base.num || !avctx->time_base.den)) {
        avctx->time_base.num = 1;
        avctx->time_base.den = avctx->sample_rate;
    }

    if (av_codec_is_encoder(avctx->codec))
        ret = ff_encode_preinit(avctx);
    else
        ret = ff_decode_preinit(avctx);
    if (ret < 0)
        goto free_and_end;

    if (HAVE_THREADS && !avci->frame_thread_encoder) {
        /* Frame-threaded decoders call FFCodec.init for their child contexts. */
        lock_avcodec(codec2);
        ret = ff_thread_init(avctx);
        unlock_avcodec(codec2);
        if (ret < 0) {
            goto free_and_end;
        }
    }
    if (!HAVE_THREADS && !(codec2->caps_internal & FF_CODEC_CAP_AUTO_THREADS))
        avctx->thread_count = 1;

    if (!(avctx->active_thread_type & FF_THREAD_FRAME) ||
        avci->frame_thread_encoder) {
        if (codec2->init) {
            lock_avcodec(codec2);
            ret = codec2->init(avctx);
            unlock_avcodec(codec2);
            if (ret < 0) {
                avci->needs_close = codec2->caps_internal & FF_CODEC_CAP_INIT_CLEANUP;
                goto free_and_end;
            }
        }
        avci->needs_close = 1;
    }

    ret=0;

    if (av_codec_is_decoder(avctx->codec)) {
        if (!avctx->bit_rate)
            avctx->bit_rate = get_bit_rate(avctx);

        /* validate channel layout from the decoder */
        if ((avctx->ch_layout.nb_channels && !av_channel_layout_check(&avctx->ch_layout)) ||
            avctx->ch_layout.nb_channels > FF_SANE_NB_CHANNELS) {
            ret = AVERROR(EINVAL);
            goto free_and_end;
        }
        if (avctx->bits_per_coded_sample < 0) {
            ret = AVERROR(EINVAL);
            goto free_and_end;
        }
    }
    if (codec->priv_class)
        av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);

end:

    return ret;
free_and_end:
    ff_codec_close(avctx);
    goto end;
}

void avcodec_flush_buffers(AVCodecContext *avctx)
{
    AVCodecInternal *avci = avctx->internal;

    if (av_codec_is_encoder(avctx->codec)) {
        int caps = avctx->codec->capabilities;

        if (!(caps & AV_CODEC_CAP_ENCODER_FLUSH)) {
            // Only encoders that explicitly declare support for it can be
            // flushed. Otherwise, this is a no-op.
            av_log(avctx, AV_LOG_WARNING, "Ignoring attempt to flush encoder "
                   "that doesn't support it\n");
            return;
        }
        ff_encode_flush_buffers(avctx);
    } else
        ff_decode_flush_buffers(avctx);

    avci->draining      = 0;
    avci->draining_done = 0;
    if (avci->buffer_frame)
        av_frame_unref(avci->buffer_frame);
    if (avci->buffer_pkt)
        av_packet_unref(avci->buffer_pkt);

    if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME &&
        !avci->is_frame_mt)
        ff_thread_flush(avctx);
    else if (ffcodec(avctx->codec)->flush)
        ffcodec(avctx->codec)->flush(avctx);
}

void avsubtitle_free(AVSubtitle *sub)
{
    int i;

    for (i = 0; i < sub->num_rects; i++) {
        AVSubtitleRect *const rect = sub->rects[i];

        av_freep(&rect->data[0]);
        av_freep(&rect->data[1]);
        av_freep(&rect->data[2]);
        av_freep(&rect->data[3]);
        av_freep(&rect->text);
        av_freep(&rect->ass);

        av_freep(&sub->rects[i]);
    }

    av_freep(&sub->rects);

    memset(sub, 0, sizeof(*sub));
}

av_cold void ff_codec_close(AVCodecContext *avctx)
{
    int i;

    if (!avctx)
        return;

    if (avcodec_is_open(avctx)) {
        AVCodecInternal *avci = avctx->internal;

        if (CONFIG_FRAME_THREAD_ENCODER &&
            avci->frame_thread_encoder && avctx->thread_count > 1) {
            ff_frame_thread_encoder_free(avctx);
        }
        if (HAVE_THREADS && avci->thread_ctx)
            ff_thread_free(avctx);
        if (avci->needs_close && ffcodec(avctx->codec)->close)
            ffcodec(avctx->codec)->close(avctx);
        avci->byte_buffer_size = 0;
        av_freep(&avci->byte_buffer);
        av_frame_free(&avci->buffer_frame);
        av_packet_free(&avci->buffer_pkt);
        av_packet_free(&avci->last_pkt_props);

        av_packet_free(&avci->in_pkt);
        av_frame_free(&avci->in_frame);
        av_frame_free(&avci->recon_frame);

        ff_refstruct_unref(&avci->pool);
        ff_refstruct_pool_uninit(&avci->progress_frame_pool);
        if (av_codec_is_decoder(avctx->codec))
            ff_decode_internal_uninit(avctx);

        ff_hwaccel_uninit(avctx);

        av_bsf_free(&avci->bsf);

#if FF_API_DROPCHANGED
        av_channel_layout_uninit(&avci->initial_ch_layout);
#endif

#if CONFIG_LCMS2
        ff_icc_context_uninit(&avci->icc);
#endif

        av_freep(&avctx->internal);
    }

    for (i = 0; i < avctx->nb_coded_side_data; i++)
        av_freep(&avctx->coded_side_data[i].data);
    av_freep(&avctx->coded_side_data);
    avctx->nb_coded_side_data = 0;
    av_frame_side_data_free(&avctx->decoded_side_data,
                            &avctx->nb_decoded_side_data);

    av_buffer_unref(&avctx->hw_frames_ctx);
    av_buffer_unref(&avctx->hw_device_ctx);

    if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
        av_opt_free(avctx->priv_data);
    av_opt_free(avctx);
    av_freep(&avctx->priv_data);
    if (av_codec_is_encoder(avctx->codec)) {
        av_freep(&avctx->extradata);
        avctx->extradata_size = 0;
    } else if (av_codec_is_decoder(avctx->codec))
        av_freep(&avctx->subtitle_header);

    avctx->codec = NULL;
    avctx->active_thread_type = 0;
}

#if FF_API_AVCODEC_CLOSE
int avcodec_close(AVCodecContext *avctx)
{
    ff_codec_close(avctx);
    return 0;
}
#endif

static const char *unknown_if_null(const char *str)
{
    return str ? str : "unknown";
}

void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
    const char *codec_type;
    const char *codec_name;
    const char *profile = NULL;
    AVBPrint bprint;
    int64_t bitrate;
    int new_line = 0;
    AVRational display_aspect_ratio;
    const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
    const char *str;

    if (!buf || buf_size <= 0)
        return;
    av_bprint_init_for_buffer(&bprint, buf, buf_size);
    codec_type = av_get_media_type_string(enc->codec_type);
    codec_name = avcodec_get_name(enc->codec_id);
    profile = avcodec_profile_name(enc->codec_id, enc->profile);

    av_bprintf(&bprint, "%s: %s", codec_type ? codec_type : "unknown",
               codec_name);
    buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */

    if (enc->codec && strcmp(enc->codec->name, codec_name))
        av_bprintf(&bprint, " (%s)", enc->codec->name);

    if (profile)
        av_bprintf(&bprint, " (%s)", profile);
    if (   enc->codec_type == AVMEDIA_TYPE_VIDEO
        && av_log_get_level() >= AV_LOG_VERBOSE
        && enc->refs)
        av_bprintf(&bprint, ", %d reference frame%s",
                   enc->refs, enc->refs > 1 ? "s" : "");

    if (enc->codec_tag)
        av_bprintf(&bprint, " (%s / 0x%04X)",
                   av_fourcc2str(enc->codec_tag), enc->codec_tag);

    switch (enc->codec_type) {
    case AVMEDIA_TYPE_VIDEO:
        {
            unsigned len;

            av_bprintf(&bprint, "%s%s", separator,
                       enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
                       unknown_if_null(av_get_pix_fmt_name(enc->pix_fmt)));

            av_bprint_chars(&bprint, '(', 1);
            len = bprint.len;

            /* The following check ensures that '(' has been written
             * and therefore allows us to erase it if it turns out
             * to be unnecessary. */
            if (!av_bprint_is_complete(&bprint))
                return;

            if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
                enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
                av_bprintf(&bprint, "%d bpc, ", enc->bits_per_raw_sample);
            if (enc->color_range != AVCOL_RANGE_UNSPECIFIED &&
                (str = av_color_range_name(enc->color_range)))
                av_bprintf(&bprint, "%s, ", str);

            if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
                enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
                enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
                const char *col = unknown_if_null(av_color_space_name(enc->colorspace));
                const char *pri = unknown_if_null(av_color_primaries_name(enc->color_primaries));
                const char *trc = unknown_if_null(av_color_transfer_name(enc->color_trc));
                if (strcmp(col, pri) || strcmp(col, trc)) {
                    new_line = 1;
                    av_bprintf(&bprint, "%s/%s/%s, ", col, pri, trc);
                } else
                    av_bprintf(&bprint, "%s, ", col);
            }

            if (enc->field_order != AV_FIELD_UNKNOWN) {
                const char *field_order = "progressive";
                if (enc->field_order == AV_FIELD_TT)
                    field_order = "top first";
                else if (enc->field_order == AV_FIELD_BB)
                    field_order = "bottom first";
                else if (enc->field_order == AV_FIELD_TB)
                    field_order = "top coded first (swapped)";
                else if (enc->field_order == AV_FIELD_BT)
                    field_order = "bottom coded first (swapped)";

                av_bprintf(&bprint, "%s, ", field_order);
            }

            if (av_log_get_level() >= AV_LOG_VERBOSE &&
                enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED &&
                (str = av_chroma_location_name(enc->chroma_sample_location)))
                av_bprintf(&bprint, "%s, ", str);

            if (len == bprint.len) {
                bprint.str[len - 1] = '\0';
                bprint.len--;
            } else {
                if (bprint.len - 2 < bprint.size) {
                    /* Erase the last ", " */
                    bprint.len -= 2;
                    bprint.str[bprint.len] = '\0';
                }
                av_bprint_chars(&bprint, ')', 1);
            }
        }

        if (enc->width) {
            av_bprintf(&bprint, "%s%dx%d", new_line ? separator : ", ",
                       enc->width, enc->height);

            if (av_log_get_level() >= AV_LOG_VERBOSE &&
                enc->coded_width && enc->coded_height &&
                (enc->width != enc->coded_width ||
                 enc->height != enc->coded_height))
                av_bprintf(&bprint, " (%dx%d)",
                           enc->coded_width, enc->coded_height);

            if (enc->sample_aspect_ratio.num) {
                av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
                          enc->width * (int64_t)enc->sample_aspect_ratio.num,
                          enc->height * (int64_t)enc->sample_aspect_ratio.den,
                          1024 * 1024);
                av_bprintf(&bprint, " [SAR %d:%d DAR %d:%d]",
                         enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
                         display_aspect_ratio.num, display_aspect_ratio.den);
            }
            if (av_log_get_level() >= AV_LOG_DEBUG) {
                int g = av_gcd(enc->time_base.num, enc->time_base.den);
                av_bprintf(&bprint, ", %d/%d",
                           enc->time_base.num / g, enc->time_base.den / g);
            }
        }
        if (encode) {
            av_bprintf(&bprint, ", q=%d-%d", enc->qmin, enc->qmax);
        } else {
            if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
                av_bprintf(&bprint, ", Closed Captions");
            if (enc->properties & FF_CODEC_PROPERTY_FILM_GRAIN)
                av_bprintf(&bprint, ", Film Grain");
            if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
                av_bprintf(&bprint, ", lossless");
        }
        break;
    case AVMEDIA_TYPE_AUDIO:
        av_bprintf(&bprint, "%s", separator);

        if (enc->sample_rate) {
            av_bprintf(&bprint, "%d Hz, ", enc->sample_rate);
        }
        av_channel_layout_describe_bprint(&enc->ch_layout, &bprint);
        if (enc->sample_fmt != AV_SAMPLE_FMT_NONE &&
            (str = av_get_sample_fmt_name(enc->sample_fmt))) {
            av_bprintf(&bprint, ", %s", str);
        }
        if (   enc->bits_per_raw_sample > 0
            && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
            av_bprintf(&bprint, " (%d bit)", enc->bits_per_raw_sample);
        if (av_log_get_level() >= AV_LOG_VERBOSE) {
            if (enc->initial_padding)
                av_bprintf(&bprint, ", delay %d", enc->initial_padding);
            if (enc->trailing_padding)
                av_bprintf(&bprint, ", padding %d", enc->trailing_padding);
        }
        break;
    case AVMEDIA_TYPE_DATA:
        if (av_log_get_level() >= AV_LOG_DEBUG) {
            int g = av_gcd(enc->time_base.num, enc->time_base.den);
            if (g)
                av_bprintf(&bprint, ", %d/%d",
                           enc->time_base.num / g, enc->time_base.den / g);
        }
        break;
    case AVMEDIA_TYPE_SUBTITLE:
        if (enc->width)
            av_bprintf(&bprint, ", %dx%d", enc->width, enc->height);
        break;
    default:
        return;
    }
    if (encode) {
        if (enc->flags & AV_CODEC_FLAG_PASS1)
            av_bprintf(&bprint, ", pass 1");
        if (enc->flags & AV_CODEC_FLAG_PASS2)
            av_bprintf(&bprint, ", pass 2");
    }
    bitrate = get_bit_rate(enc);
    if (bitrate != 0) {
        av_bprintf(&bprint, ", %"PRId64" kb/s", bitrate / 1000);
    } else if (enc->rc_max_rate > 0) {
        av_bprintf(&bprint, ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
    }
}

int avcodec_is_open(AVCodecContext *s)
{
    return !!s->internal;
}

int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
{
    av_frame_unref(frame);

    if (av_codec_is_decoder(avctx->codec))
        return ff_decode_receive_frame(avctx, frame);
    return ff_encode_receive_frame(avctx, frame);
}

#define WRAP_CONFIG(allowed_type, field, field_type, terminator)            \
    do {                                                                    \
        static const field_type end = terminator;                           \
        if (codec->type != (allowed_type))                                  \
            return AVERROR(EINVAL);                                         \
        *out_configs = (field);                                             \
        if (out_num_configs) {                                              \
            for (int i = 0;; i++) {                                         \
                if (!(field) || !memcmp(&(field)[i], &end, sizeof(end))) {  \
                    *out_num_configs = i;                                   \
                    break;                                                  \
                }                                                           \
            }                                                               \
        }                                                                   \
        return 0;                                                           \
    } while (0)

static const enum AVColorRange color_range_jpeg[] = {
    AVCOL_RANGE_JPEG, AVCOL_RANGE_UNSPECIFIED
};

static const enum AVColorRange color_range_mpeg[] = {
    AVCOL_RANGE_MPEG, AVCOL_RANGE_UNSPECIFIED
};

static const enum AVColorRange color_range_all[] = {
    AVCOL_RANGE_MPEG, AVCOL_RANGE_JPEG, AVCOL_RANGE_UNSPECIFIED
};

static const enum AVColorRange *color_range_table[] = {
    [AVCOL_RANGE_MPEG] = color_range_mpeg,
    [AVCOL_RANGE_JPEG] = color_range_jpeg,
    [AVCOL_RANGE_MPEG | AVCOL_RANGE_JPEG] = color_range_all,
};

int ff_default_get_supported_config(const AVCodecContext *avctx,
                                    const AVCodec *codec,
                                    enum AVCodecConfig config,
                                    unsigned flags,
                                    const void **out_configs,
                                    int *out_num_configs)
{
    switch (config) {
FF_DISABLE_DEPRECATION_WARNINGS
    case AV_CODEC_CONFIG_PIX_FORMAT:
        WRAP_CONFIG(AVMEDIA_TYPE_VIDEO, codec->pix_fmts, enum AVPixelFormat, AV_PIX_FMT_NONE);
    case AV_CODEC_CONFIG_FRAME_RATE:
        WRAP_CONFIG(AVMEDIA_TYPE_VIDEO, codec->supported_framerates, AVRational, {0});
    case AV_CODEC_CONFIG_SAMPLE_RATE:
        WRAP_CONFIG(AVMEDIA_TYPE_AUDIO, codec->supported_samplerates, int, 0);
    case AV_CODEC_CONFIG_SAMPLE_FORMAT:
        WRAP_CONFIG(AVMEDIA_TYPE_AUDIO, codec->sample_fmts, enum AVSampleFormat, AV_SAMPLE_FMT_NONE);
    case AV_CODEC_CONFIG_CHANNEL_LAYOUT:
        WRAP_CONFIG(AVMEDIA_TYPE_AUDIO, codec->ch_layouts, AVChannelLayout, {0});
FF_ENABLE_DEPRECATION_WARNINGS

    case AV_CODEC_CONFIG_COLOR_RANGE:
        if (codec->type != AVMEDIA_TYPE_VIDEO)
            return AVERROR(EINVAL);
        *out_configs = color_range_table[ffcodec(codec)->color_ranges];
        if (out_num_configs)
            *out_num_configs = av_popcount(ffcodec(codec)->color_ranges);
        return 0;

    case AV_CODEC_CONFIG_COLOR_SPACE:
        *out_configs = NULL;
        if (out_num_configs)
            *out_num_configs = 0;
        return 0;
    default:
        return AVERROR(EINVAL);
    }
}

int avcodec_get_supported_config(const AVCodecContext *avctx, const AVCodec *codec,
                                 enum AVCodecConfig config, unsigned flags,
                                 const void **out, int *out_num)
{
    const FFCodec *codec2;
    int dummy_num = 0;
    if (!codec)
        codec = avctx->codec;
    if (!out_num)
        out_num = &dummy_num;

    codec2 = ffcodec(codec);
    if (codec2->get_supported_config) {
        return codec2->get_supported_config(avctx, codec, config, flags, out, out_num);
    } else {
        return ff_default_get_supported_config(avctx, codec, config, flags, out, out_num);
    }
}