GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/decode.c Lines: 667 1179 56.6 %
Date: 2021-04-20 04:37:23 Branches: 498 929 53.6 %

Line Branch Exec Source
1
/*
2
 * generic decoding-related code
3
 *
4
 * This file is part of FFmpeg.
5
 *
6
 * FFmpeg is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2.1 of the License, or (at your option) any later version.
10
 *
11
 * FFmpeg is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
16
 * You should have received a copy of the GNU Lesser General Public
17
 * License along with FFmpeg; if not, write to the Free Software
18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
 */
20
21
#include <stdint.h>
22
#include <string.h>
23
24
#include "config.h"
25
26
#if CONFIG_ICONV
27
# include <iconv.h>
28
#endif
29
30
#include "libavutil/avassert.h"
31
#include "libavutil/avstring.h"
32
#include "libavutil/bprint.h"
33
#include "libavutil/common.h"
34
#include "libavutil/frame.h"
35
#include "libavutil/hwcontext.h"
36
#include "libavutil/imgutils.h"
37
#include "libavutil/internal.h"
38
#include "libavutil/intmath.h"
39
#include "libavutil/opt.h"
40
41
#include "avcodec.h"
42
#include "bytestream.h"
43
#include "decode.h"
44
#include "hwconfig.h"
45
#include "internal.h"
46
#include "thread.h"
47
48
typedef struct FramePool {
49
    /**
50
     * Pools for each data plane. For audio all the planes have the same size,
51
     * so only pools[0] is used.
52
     */
53
    AVBufferPool *pools[4];
54
55
    /*
56
     * Pool parameters
57
     */
58
    int format;
59
    int width, height;
60
    int stride_align[AV_NUM_DATA_POINTERS];
61
    int linesize[4];
62
    int planes;
63
    int channels;
64
    int samples;
65
} FramePool;
66
67
374656
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
68
{
69
    int ret;
70
    buffer_size_t size;
71
    const uint8_t *data;
72
    uint32_t flags;
73
    int64_t val;
74
75
374656
    data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
76
374656
    if (!data)
77
374654
        return 0;
78
79
2
    if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
80
        av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
81
               "changes, but PARAM_CHANGE side data was sent to it.\n");
82
        ret = AVERROR(EINVAL);
83
        goto fail2;
84
    }
85
86
2
    if (size < 4)
87
        goto fail;
88
89
2
    flags = bytestream_get_le32(&data);
90
2
    size -= 4;
91
92
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
93
        if (size < 4)
94
            goto fail;
95
        val = bytestream_get_le32(&data);
96
        if (val <= 0 || val > INT_MAX) {
97
            av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
98
            ret = AVERROR_INVALIDDATA;
99
            goto fail2;
100
        }
101
        avctx->channels = val;
102
        size -= 4;
103
    }
104
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
105
        if (size < 8)
106
            goto fail;
107
        avctx->channel_layout = bytestream_get_le64(&data);
108
        size -= 8;
109
    }
110
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
111
        if (size < 4)
112
            goto fail;
113
        val = bytestream_get_le32(&data);
114
        if (val <= 0 || val > INT_MAX) {
115
            av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
116
            ret = AVERROR_INVALIDDATA;
117
            goto fail2;
118
        }
119
        avctx->sample_rate = val;
120
        size -= 4;
121
    }
122
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
123
2
        if (size < 8)
124
            goto fail;
125
2
        avctx->width  = bytestream_get_le32(&data);
126
2
        avctx->height = bytestream_get_le32(&data);
127
2
        size -= 8;
128
2
        ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
129
2
        if (ret < 0)
130
            goto fail2;
131
    }
132
133
2
    return 0;
134
fail:
135
    av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
136
    ret = AVERROR_INVALIDDATA;
137
fail2:
138
    if (ret < 0) {
139
        av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
140
        if (avctx->err_recognition & AV_EF_EXPLODE)
141
            return ret;
142
    }
143
    return 0;
144
}
145
146
#define IS_EMPTY(pkt) (!(pkt)->data)
147
148
374656
static int copy_packet_props(AVPacket *dst, const AVPacket *src)
149
{
150
374656
    int ret = av_packet_copy_props(dst, src);
151
374656
    if (ret < 0)
152
        return ret;
153
154
374656
    dst->size = src->size; // HACK: Needed for ff_decode_frame_props().
155
374656
    dst->data = (void*)1;  // HACK: Needed for IS_EMPTY().
156
157
374656
    return 0;
158
}
159
160
374656
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
161
{
162
374656
    AVPacket tmp = { 0 };
163
374656
    int ret = 0;
164
165
374656
    if (IS_EMPTY(avci->last_pkt_props)) {
166
374656
        if (av_fifo_size(avci->pkt_props) >= sizeof(*pkt)) {
167
            av_fifo_generic_read(avci->pkt_props, avci->last_pkt_props,
168
                                 sizeof(*avci->last_pkt_props), NULL);
169
        } else
170
374656
            return copy_packet_props(avci->last_pkt_props, pkt);
171
    }
172
173
    if (av_fifo_space(avci->pkt_props) < sizeof(*pkt)) {
174
        ret = av_fifo_grow(avci->pkt_props, sizeof(*pkt));
175
        if (ret < 0)
176
            return ret;
177
    }
178
179
    ret = copy_packet_props(&tmp, pkt);
180
    if (ret < 0)
181
        return ret;
182
183
    av_fifo_generic_write(avci->pkt_props, &tmp, sizeof(tmp), NULL);
184
185
    return 0;
186
}
187
188
12821
static int decode_bsfs_init(AVCodecContext *avctx)
189
{
190
12821
    AVCodecInternal *avci = avctx->internal;
191
    int ret;
192
193
12821
    if (avci->bsf)
194
        return 0;
195
196
12821
    ret = av_bsf_list_parse_str(avctx->codec->bsfs, &avci->bsf);
197
12821
    if (ret < 0) {
198
        av_log(avctx, AV_LOG_ERROR, "Error parsing decoder bitstream filters '%s': %s\n", avctx->codec->bsfs, av_err2str(ret));
199
        if (ret != AVERROR(ENOMEM))
200
            ret = AVERROR_BUG;
201
        goto fail;
202
    }
203
204
    /* We do not currently have an API for passing the input timebase into decoders,
205
     * but no filters used here should actually need it.
206
     * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
207
12821
    avci->bsf->time_base_in = (AVRational){ 1, 90000 };
208
12821
    ret = avcodec_parameters_from_context(avci->bsf->par_in, avctx);
209
12821
    if (ret < 0)
210
        goto fail;
211
212
12821
    ret = av_bsf_init(avci->bsf);
213
12821
    if (ret < 0)
214
        goto fail;
215
216
12821
    return 0;
217
fail:
218
    av_bsf_free(&avci->bsf);
219
    return ret;
220
}
221
222
752089
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
223
{
224
752089
    AVCodecInternal *avci = avctx->internal;
225
    int ret;
226
227
752089
    if (avci->draining)
228
57
        return AVERROR_EOF;
229
230
752032
    ret = av_bsf_receive_packet(avci->bsf, pkt);
231
752032
    if (ret == AVERROR_EOF)
232
5892
        avci->draining = 1;
233
752032
    if (ret < 0)
234
377376
        return ret;
235
236
374656
    ret = extract_packet_props(avctx->internal, pkt);
237
374656
    if (ret < 0)
238
        goto finish;
239
240
374656
    ret = apply_param_change(avctx, pkt);
241
374656
    if (ret < 0)
242
        goto finish;
243
244
#if FF_API_OLD_ENCDEC
245
374656
    if (avctx->codec->receive_frame)
246
2630
        avci->compat_decode_consumed += pkt->size;
247
#endif
248
249
374656
    return 0;
250
finish:
251
    av_packet_unref(pkt);
252
    return ret;
253
}
254
255
/**
256
 * Attempt to guess proper monotonic timestamps for decoded video frames
257
 * which might have incorrect times. Input timestamps may wrap around, in
258
 * which case the output will as well.
259
 *
260
 * @param pts the pts field of the decoded AVPacket, as passed through
261
 * AVFrame.pts
262
 * @param dts the dts field of the decoded AVPacket
263
 * @return one of the input values, may be AV_NOPTS_VALUE
264
 */
265
395291
static int64_t guess_correct_pts(AVCodecContext *ctx,
266
                                 int64_t reordered_pts, int64_t dts)
267
{
268
395291
    int64_t pts = AV_NOPTS_VALUE;
269
270
395291
    if (dts != AV_NOPTS_VALUE) {
271
360457
        ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
272
360457
        ctx->pts_correction_last_dts = dts;
273
34834
    } else if (reordered_pts != AV_NOPTS_VALUE)
274
305
        ctx->pts_correction_last_dts = reordered_pts;
275
276
395291
    if (reordered_pts != AV_NOPTS_VALUE) {
277
331877
        ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
278
331877
        ctx->pts_correction_last_pts = reordered_pts;
279
63414
    } else if(dts != AV_NOPTS_VALUE)
280
28885
        ctx->pts_correction_last_pts = dts;
281
282

395291
    if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
283
394714
       && reordered_pts != AV_NOPTS_VALUE)
284
331301
        pts = reordered_pts;
285
    else
286
63990
        pts = dts;
287
288
395291
    return pts;
289
}
290
291
/*
292
 * The core of the receive_frame_wrapper for the decoders implementing
293
 * the simple API. Certain decoders might consume partial packets without
294
 * returning any output, so this function needs to be called in a loop until it
295
 * returns EAGAIN.
296
 **/
297
782551
static inline int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
298
{
299
782551
    AVCodecInternal   *avci = avctx->internal;
300
782551
    DecodeSimpleContext *ds = &avci->ds;
301
782551
    AVPacket           *pkt = ds->in_pkt;
302
    int got_frame, actual_got_frame;
303
    int ret;
304
305

782551
    if (!pkt->data && !avci->draining) {
306
747004
        av_packet_unref(pkt);
307
747004
        ret = ff_decode_get_packet(avctx, pkt);
308

747004
        if (ret < 0 && ret != AVERROR_EOF)
309
369143
            return ret;
310
    }
311
312
    // Some codecs (at least wma lossless) will crash when feeding drain packets
313
    // after EOF was signaled.
314
413408
    if (avci->draining_done)
315
6136
        return AVERROR_EOF;
316
317
407272
    if (!pkt->data &&
318
6562
        !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
319
5203
          avctx->active_thread_type & FF_THREAD_FRAME))
320
5154
        return AVERROR_EOF;
321
322
402118
    got_frame = 0;
323
324
402118
    if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
325
582
        ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
326
    } else {
327
401536
        ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
328
329
401536
        if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
330
401206
            frame->pkt_dts = pkt->dts;
331
401536
        if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
332
113964
            if(!avctx->has_b_frames)
333
81733
                frame->pkt_pos = pkt->pos;
334
            //FIXME these should be under if(!avctx->has_b_frames)
335
            /* get_buffer is supposed to set frame parameters */
336
113964
            if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
337
21596
                if (!frame->sample_aspect_ratio.num)  frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
338
21596
                if (!frame->width)                    frame->width               = avctx->width;
339
21596
                if (!frame->height)                   frame->height              = avctx->height;
340
21596
                if (frame->format == AV_PIX_FMT_NONE) frame->format              = avctx->pix_fmt;
341
            }
342
        }
343
    }
344
402118
    emms_c();
345
402118
    actual_got_frame = got_frame;
346
347
402118
    if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
348
114074
        if (frame->flags & AV_FRAME_FLAG_DISCARD)
349
179
            got_frame = 0;
350
288044
    } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
351
        uint8_t *side;
352
        buffer_size_t side_size;
353
288044
        uint32_t discard_padding = 0;
354
288044
        uint8_t skip_reason = 0;
355
288044
        uint8_t discard_reason = 0;
356
357

288044
        if (ret >= 0 && got_frame) {
358
286605
            if (frame->format == AV_SAMPLE_FMT_NONE)
359
                frame->format = avctx->sample_fmt;
360
286605
            if (!frame->channel_layout)
361
1070
                frame->channel_layout = avctx->channel_layout;
362
286605
            if (!frame->channels)
363
                frame->channels = avctx->channels;
364
286605
            if (!frame->sample_rate)
365
2
                frame->sample_rate = avctx->sample_rate;
366
        }
367
368
288044
        side= av_packet_get_side_data(avci->last_pkt_props, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
369

288044
        if(side && side_size>=10) {
370
104
            avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
371
104
            discard_padding = AV_RL32(side + 4);
372
104
            av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
373
                   avci->skip_samples, (int)discard_padding);
374
104
            skip_reason = AV_RL8(side + 8);
375
104
            discard_reason = AV_RL8(side + 9);
376
        }
377
378

288044
        if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
379
17
            !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
380
17
            avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples);
381
17
            got_frame = 0;
382
17
            *discarded_samples += frame->nb_samples;
383
        }
384
385

288044
        if (avci->skip_samples > 0 && got_frame &&
386
155
            !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
387
155
            if(frame->nb_samples <= avci->skip_samples){
388
103
                got_frame = 0;
389
103
                *discarded_samples += frame->nb_samples;
390
103
                avci->skip_samples -= frame->nb_samples;
391
103
                av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
392
                       avci->skip_samples);
393
            } else {
394
52
                av_samples_copy(frame->extended_data, frame->extended_data, 0, avci->skip_samples,
395
52
                                frame->nb_samples - avci->skip_samples, avctx->channels, frame->format);
396

104
                if(avctx->pkt_timebase.num && avctx->sample_rate) {
397
52
                    int64_t diff_ts = av_rescale_q(avci->skip_samples,
398
52
                                                   (AVRational){1, avctx->sample_rate},
399
                                                   avctx->pkt_timebase);
400
52
                    if(frame->pts!=AV_NOPTS_VALUE)
401
52
                        frame->pts += diff_ts;
402
#if FF_API_PKT_PTS
403
FF_DISABLE_DEPRECATION_WARNINGS
404
52
                    if(frame->pkt_pts!=AV_NOPTS_VALUE)
405
52
                        frame->pkt_pts += diff_ts;
406
FF_ENABLE_DEPRECATION_WARNINGS
407
#endif
408
52
                    if(frame->pkt_dts!=AV_NOPTS_VALUE)
409
52
                        frame->pkt_dts += diff_ts;
410
52
                    if (frame->pkt_duration >= diff_ts)
411
52
                        frame->pkt_duration -= diff_ts;
412
                } else {
413
                    av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
414
                }
415
52
                av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
416
                       avci->skip_samples, frame->nb_samples);
417
52
                *discarded_samples += avci->skip_samples;
418
52
                frame->nb_samples -= avci->skip_samples;
419
52
                avci->skip_samples = 0;
420
            }
421
        }
422
423

288044
        if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
424
5
            !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
425
5
            if (discard_padding == frame->nb_samples) {
426
2
                *discarded_samples += frame->nb_samples;
427
2
                got_frame = 0;
428
            } else {
429

3
                if(avctx->pkt_timebase.num && avctx->sample_rate) {
430
3
                    int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
431
3
                                                   (AVRational){1, avctx->sample_rate},
432
                                                   avctx->pkt_timebase);
433
3
                    frame->pkt_duration = diff_ts;
434
                } else {
435
                    av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
436
                }
437
3
                av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
438
                       (int)discard_padding, frame->nb_samples);
439
3
                frame->nb_samples -= discard_padding;
440
            }
441
        }
442
443

288044
        if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
444
            AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
445
            if (fside) {
446
                AV_WL32(fside->data, avci->skip_samples);
447
                AV_WL32(fside->data + 4, discard_padding);
448
                AV_WL8(fside->data + 8, skip_reason);
449
                AV_WL8(fside->data + 9, discard_reason);
450
                avci->skip_samples = 0;
451
            }
452
        }
453
    }
454
455
402118
    if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
456

288044
        !avci->showed_multi_packet_warning &&
457

262709
        ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
458
16
        av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
459
16
        avci->showed_multi_packet_warning = 1;
460
    }
461
462
402118
    if (!got_frame)
463
9479
        av_frame_unref(frame);
464
465

402118
    if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
466
113032
        ret = pkt->size;
467
468
#if FF_API_AVCTX_TIMEBASE
469

402118
    if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
470
83443
        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
471
#endif
472
473
    /* do not stop draining when actual_got_frame != 0 or ret < 0 */
474
    /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
475

402118
    if (avci->draining && !actual_got_frame) {
476
667
        if (ret < 0) {
477
            /* prevent infinite loop if a decoder wrongly always return error on draining */
478
            /* reasonable nb_errors_max = maximum b frames + thread count */
479
1
            int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
480
                                avctx->thread_count : 1);
481
482
1
            if (avci->nb_draining_errors++ >= nb_errors_max) {
483
                av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
484
                       "Stop draining and force EOF.\n");
485
                avci->draining_done = 1;
486
                ret = AVERROR_BUG;
487
            }
488
        } else {
489
666
            avci->draining_done = 1;
490
        }
491
    }
492
493
#if FF_API_OLD_ENCDEC
494
402118
    avci->compat_decode_consumed += ret;
495
#endif
496
497

402118
    if (ret >= pkt->size || ret < 0) {
498
373425
        av_packet_unref(pkt);
499
373425
        av_packet_unref(avci->last_pkt_props);
500
    } else {
501
28693
        int consumed = ret;
502
503
28693
        pkt->data                += consumed;
504
28693
        pkt->size                -= consumed;
505
28693
        avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
506
28693
        pkt->pts                  = AV_NOPTS_VALUE;
507
28693
        pkt->dts                  = AV_NOPTS_VALUE;
508
28693
        avci->last_pkt_props->pts = AV_NOPTS_VALUE;
509
28693
        avci->last_pkt_props->dts = AV_NOPTS_VALUE;
510
    }
511
512
402118
    if (got_frame)
513
392639
        av_assert0(frame->buf[0]);
514
515
402118
    return ret < 0 ? ret : 0;
516
}
517
518
774079
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
519
{
520
    int ret;
521
774079
    int64_t discarded_samples = 0;
522
523
1175190
    while (!frame->buf[0]) {
524
782551
        if (discarded_samples > avctx->max_samples)
525
            return AVERROR(EAGAIN);
526
782551
        ret = decode_simple_internal(avctx, frame, &discarded_samples);
527
782551
        if (ret < 0)
528
381440
            return ret;
529
    }
530
531
392639
    return 0;
532
}
533
534
779254
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
535
{
536
779254
    AVCodecInternal *avci = avctx->internal;
537
    int ret;
538
539
779254
    av_assert0(!frame->buf[0]);
540
541
779254
    if (avctx->codec->receive_frame) {
542
5175
        ret = avctx->codec->receive_frame(avctx, frame);
543
5175
        if (ret != AVERROR(EAGAIN))
544
2767
            av_packet_unref(avci->last_pkt_props);
545
    } else
546
774079
        ret = decode_simple_receive_frame(avctx, frame);
547
548
779254
    if (ret == AVERROR_EOF)
549
11404
        avci->draining_done = 1;
550
551
779254
    if (!ret) {
552
395291
        frame->best_effort_timestamp = guess_correct_pts(avctx,
553
                                                         frame->pts,
554
                                                         frame->pkt_dts);
555
556
        /* the only case where decode data is not set should be decoders
557
         * that do not call ff_get_buffer() */
558

395291
        av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) ||
559
                   !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
560
561
395291
        if (frame->private_ref) {
562
373904
            FrameDecodeData *fdd = (FrameDecodeData*)frame->private_ref->data;
563
564
373904
            if (fdd->post_process) {
565
                ret = fdd->post_process(avctx, frame);
566
                if (ret < 0) {
567
                    av_frame_unref(frame);
568
                    return ret;
569
                }
570
            }
571
        }
572
    }
573
574
    /* free the per-frame decode data */
575
779254
    av_buffer_unref(&frame->private_ref);
576
577
779254
    return ret;
578
}
579
580
381163
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
581
{
582
381163
    AVCodecInternal *avci = avctx->internal;
583
    int ret;
584
585

381163
    if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
586
        return AVERROR(EINVAL);
587
588
381163
    if (avctx->internal->draining)
589
678
        return AVERROR_EOF;
590
591

380485
    if (avpkt && !avpkt->size && avpkt->data)
592
        return AVERROR(EINVAL);
593
594
380485
    av_packet_unref(avci->buffer_pkt);
595

380485
    if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
596
374593
        ret = av_packet_ref(avci->buffer_pkt, avpkt);
597
374593
        if (ret < 0)
598
            return ret;
599
    }
600
601
380485
    ret = av_bsf_send_packet(avci->bsf, avci->buffer_pkt);
602
380485
    if (ret < 0) {
603
        av_packet_unref(avci->buffer_pkt);
604
        return ret;
605
    }
606
607
380485
    if (!avci->buffer_frame->buf[0]) {
608
380485
        ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
609

380485
        if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
610
1003
            return ret;
611
    }
612
613
379482
    return 0;
614
}
615
616
108636
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
617
{
618
    /* make sure we are noisy about decoders returning invalid cropping data */
619
108636
    if (frame->crop_left >= INT_MAX - frame->crop_right        ||
620
108636
        frame->crop_top  >= INT_MAX - frame->crop_bottom       ||
621
108636
        (frame->crop_left + frame->crop_right) >= frame->width ||
622
108636
        (frame->crop_top + frame->crop_bottom) >= frame->height) {
623
        av_log(avctx, AV_LOG_WARNING,
624
               "Invalid cropping information set by a decoder: "
625
               "%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER" "
626
               "(frame size %dx%d). This is a bug, please report it\n",
627
               frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
628
               frame->width, frame->height);
629
        frame->crop_left   = 0;
630
        frame->crop_right  = 0;
631
        frame->crop_top    = 0;
632
        frame->crop_bottom = 0;
633
        return 0;
634
    }
635
636
108636
    if (!avctx->apply_cropping)
637
        return 0;
638
639
108636
    return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
640
                                          AV_FRAME_CROP_UNALIGNED : 0);
641
}
642
643
766178
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
644
{
645
766178
    AVCodecInternal *avci = avctx->internal;
646
    int ret, changed;
647
648
766178
    av_frame_unref(frame);
649
650

766178
    if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
651
        return AVERROR(EINVAL);
652
653
766178
    if (avci->buffer_frame->buf[0]) {
654
367409
        av_frame_move_ref(frame, avci->buffer_frame);
655
    } else {
656
398769
        ret = decode_receive_frame_internal(avctx, frame);
657
398769
        if (ret < 0)
658
370887
            return ret;
659
    }
660
661
395291
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
662
108636
        ret = apply_cropping(avctx, frame);
663
108636
        if (ret < 0) {
664
            av_frame_unref(frame);
665
            return ret;
666
        }
667
    }
668
669
395291
    avctx->frame_number++;
670
671
395291
    if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
672
673
        if (avctx->frame_number == 1) {
674
            avci->initial_format = frame->format;
675
            switch(avctx->codec_type) {
676
            case AVMEDIA_TYPE_VIDEO:
677
                avci->initial_width  = frame->width;
678
                avci->initial_height = frame->height;
679
                break;
680
            case AVMEDIA_TYPE_AUDIO:
681
                avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate :
682
                                                                 avctx->sample_rate;
683
                avci->initial_channels       = frame->channels;
684
                avci->initial_channel_layout = frame->channel_layout;
685
                break;
686
            }
687
        }
688
689
        if (avctx->frame_number > 1) {
690
            changed = avci->initial_format != frame->format;
691
692
            switch(avctx->codec_type) {
693
            case AVMEDIA_TYPE_VIDEO:
694
                changed |= avci->initial_width  != frame->width ||
695
                           avci->initial_height != frame->height;
696
                break;
697
            case AVMEDIA_TYPE_AUDIO:
698
                changed |= avci->initial_sample_rate    != frame->sample_rate ||
699
                           avci->initial_sample_rate    != avctx->sample_rate ||
700
                           avci->initial_channels       != frame->channels ||
701
                           avci->initial_channel_layout != frame->channel_layout;
702
                break;
703
            }
704
705
            if (changed) {
706
                avci->changed_frames_dropped++;
707
                av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
708
                                            " drop count: %d \n",
709
                                            avctx->frame_number, frame->pts,
710
                                            avci->changed_frames_dropped);
711
                av_frame_unref(frame);
712
                return AVERROR_INPUT_CHANGED;
713
            }
714
        }
715
    }
716
395291
    return 0;
717
}
718
719
#if FF_API_OLD_ENCDEC
720
FF_DISABLE_DEPRECATION_WARNINGS
721
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
722
{
723
    int ret;
724
725
    /* move the original frame to our backup */
726
    av_frame_unref(avci->to_free);
727
    av_frame_move_ref(avci->to_free, frame);
728
729
    /* now copy everything except the AVBufferRefs back
730
     * note that we make a COPY of the side data, so calling av_frame_free() on
731
     * the caller's frame will work properly */
732
    ret = av_frame_copy_props(frame, avci->to_free);
733
    if (ret < 0)
734
        return ret;
735
736
    memcpy(frame->data,     avci->to_free->data,     sizeof(frame->data));
737
    memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
738
    if (avci->to_free->extended_data != avci->to_free->data) {
739
        int planes = avci->to_free->channels;
740
        int size   = planes * sizeof(*frame->extended_data);
741
742
        if (!size) {
743
            av_frame_unref(frame);
744
            return AVERROR_BUG;
745
        }
746
747
        frame->extended_data = av_malloc(size);
748
        if (!frame->extended_data) {
749
            av_frame_unref(frame);
750
            return AVERROR(ENOMEM);
751
        }
752
        memcpy(frame->extended_data, avci->to_free->extended_data,
753
               size);
754
    } else
755
        frame->extended_data = frame->data;
756
757
    frame->format         = avci->to_free->format;
758
    frame->width          = avci->to_free->width;
759
    frame->height         = avci->to_free->height;
760
    frame->channel_layout = avci->to_free->channel_layout;
761
    frame->nb_samples     = avci->to_free->nb_samples;
762
    frame->channels       = avci->to_free->channels;
763
764
    return 0;
765
}
766
767
static int compat_decode(AVCodecContext *avctx, AVFrame *frame,
768
                         int *got_frame, const AVPacket *pkt)
769
{
770
    AVCodecInternal *avci = avctx->internal;
771
    int ret = 0;
772
773
    av_assert0(avci->compat_decode_consumed == 0);
774
775
    if (avci->draining_done && pkt && pkt->size != 0) {
776
        av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
777
        avcodec_flush_buffers(avctx);
778
    }
779
780
    *got_frame = 0;
781
782
    if (avci->compat_decode_partial_size > 0 &&
783
        avci->compat_decode_partial_size != pkt->size) {
784
        av_log(avctx, AV_LOG_ERROR,
785
               "Got unexpected packet size after a partial decode\n");
786
        ret = AVERROR(EINVAL);
787
        goto finish;
788
    }
789
790
    if (!avci->compat_decode_partial_size) {
791
        ret = avcodec_send_packet(avctx, pkt);
792
        if (ret == AVERROR_EOF)
793
            ret = 0;
794
        else if (ret == AVERROR(EAGAIN)) {
795
            /* we fully drain all the output in each decode call, so this should not
796
             * ever happen */
797
            ret = AVERROR_BUG;
798
            goto finish;
799
        } else if (ret < 0)
800
            goto finish;
801
    }
802
803
    while (ret >= 0) {
804
        ret = avcodec_receive_frame(avctx, frame);
805
        if (ret < 0) {
806
            if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
807
                ret = 0;
808
            goto finish;
809
        }
810
811
        if (frame != avci->compat_decode_frame) {
812
            if (!avctx->refcounted_frames) {
813
                ret = unrefcount_frame(avci, frame);
814
                if (ret < 0)
815
                    goto finish;
816
            }
817
818
            *got_frame = 1;
819
            frame = avci->compat_decode_frame;
820
        } else {
821
            if (!avci->compat_decode_warned) {
822
                av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
823
                       "API cannot return all the frames for this decoder. "
824
                       "Some frames will be dropped. Update your code to the "
825
                       "new decoding API to fix this.\n");
826
                avci->compat_decode_warned = 1;
827
            }
828
        }
829
830
        if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
831
            break;
832
    }
833
834
finish:
835
    if (ret == 0) {
836
        /* if there are any bsfs then assume full packet is always consumed */
837
        if (avctx->codec->bsfs)
838
            ret = pkt->size;
839
        else
840
            ret = FFMIN(avci->compat_decode_consumed, pkt->size);
841
    }
842
    avci->compat_decode_consumed = 0;
843
    avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
844
845
    return ret;
846
}
847
848
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
849
                                              int *got_picture_ptr,
850
                                              const AVPacket *avpkt)
851
{
852
    return compat_decode(avctx, picture, got_picture_ptr, avpkt);
853
}
854
855
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
856
                                              AVFrame *frame,
857
                                              int *got_frame_ptr,
858
                                              const AVPacket *avpkt)
859
{
860
    return compat_decode(avctx, frame, got_frame_ptr, avpkt);
861
}
862
FF_ENABLE_DEPRECATION_WARNINGS
863
#endif
864
865
1311
static void get_subtitle_defaults(AVSubtitle *sub)
866
{
867
1311
    memset(sub, 0, sizeof(*sub));
868
1311
    sub->pts = AV_NOPTS_VALUE;
869
1311
}
870
871
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
872
1280
static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt,
873
                           AVPacket *inpkt, AVPacket *buf_pkt)
874
{
875
#if CONFIG_ICONV
876
1280
    iconv_t cd = (iconv_t)-1;
877
1280
    int ret = 0;
878
    char *inb, *outb;
879
    size_t inl, outl;
880
#endif
881
882

1280
    if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0) {
883
1187
        *outpkt = inpkt;
884
1187
        return 0;
885
    }
886
887
#if CONFIG_ICONV
888
93
    inb = inpkt->data;
889
93
    inl = inpkt->size;
890
891
93
    if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
892
        av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
893
        return AVERROR(ERANGE);
894
    }
895
896
93
    cd = iconv_open("UTF-8", avctx->sub_charenc);
897
93
    av_assert0(cd != (iconv_t)-1);
898
899
93
    ret = av_new_packet(buf_pkt, inl * UTF8_MAX_BYTES);
900
93
    if (ret < 0)
901
        goto end;
902
93
    ret = av_packet_copy_props(buf_pkt, inpkt);
903
93
    if (ret < 0)
904
        goto end;
905
93
    outb = buf_pkt->data;
906
93
    outl = buf_pkt->size;
907
908

186
    if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
909
93
        iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
910

93
        outl >= buf_pkt->size || inl != 0) {
911
        ret = FFMIN(AVERROR(errno), -1);
912
        av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
913
               "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
914
        goto end;
915
    }
916
93
    buf_pkt->size -= outl;
917
93
    memset(buf_pkt->data + buf_pkt->size, 0, outl);
918
93
    *outpkt = buf_pkt;
919
920
93
    ret = 0;
921
93
end:
922
93
    if (ret < 0)
923
        av_packet_unref(buf_pkt);
924
93
    if (cd != (iconv_t)-1)
925
93
        iconv_close(cd);
926
93
    return ret;
927
#else
928
    av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
929
    return AVERROR(EINVAL);
930
#endif
931
}
932
933
589
static int utf8_check(const uint8_t *str)
934
{
935
    const uint8_t *byte;
936
    uint32_t codepoint, min;
937
938
50853
    while (*str) {
939
50264
        byte = str;
940


53044
        GET_UTF8(codepoint, *(byte++), return 0;);
941

50963
        min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
942
699
              1 << (5 * (byte - str) - 4);
943

50264
        if (codepoint < min || codepoint >= 0x110000 ||
944
50264
            codepoint == 0xFFFE /* BOM */ ||
945
            codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
946
            return 0;
947
50264
        str = byte;
948
    }
949
589
    return 1;
950
}
951
952
#if FF_API_ASS_TIMING
953
static void insert_ts(AVBPrint *buf, int ts)
954
{
955
    if (ts == -1) {
956
        av_bprintf(buf, "9:59:59.99,");
957
    } else {
958
        int h, m, s;
959
960
        h = ts/360000;  ts -= 360000*h;
961
        m = ts/  6000;  ts -=   6000*m;
962
        s = ts/   100;  ts -=    100*s;
963
        av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
964
    }
965
}
966
967
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
968
{
969
    int i;
970
    AVBPrint buf;
971
972
    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
973
974
    for (i = 0; i < sub->num_rects; i++) {
975
        char *final_dialog;
976
        const char *dialog;
977
        AVSubtitleRect *rect = sub->rects[i];
978
        int ts_start, ts_duration = -1;
979
        long int layer;
980
981
        if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
982
            continue;
983
984
        av_bprint_clear(&buf);
985
986
        /* skip ReadOrder */
987
        dialog = strchr(rect->ass, ',');
988
        if (!dialog)
989
            continue;
990
        dialog++;
991
992
        /* extract Layer or Marked */
993
        layer = strtol(dialog, (char**)&dialog, 10);
994
        if (*dialog != ',')
995
            continue;
996
        dialog++;
997
998
        /* rescale timing to ASS time base (ms) */
999
        ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
1000
        if (pkt->duration != -1)
1001
            ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
1002
        sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
1003
1004
        /* construct ASS (standalone file form with timestamps) string */
1005
        av_bprintf(&buf, "Dialogue: %ld,", layer);
1006
        insert_ts(&buf, ts_start);
1007
        insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
1008
        av_bprintf(&buf, "%s\r\n", dialog);
1009
1010
        final_dialog = av_strdup(buf.str);
1011
        if (!av_bprint_is_complete(&buf) || !final_dialog) {
1012
            av_freep(&final_dialog);
1013
            av_bprint_finalize(&buf, NULL);
1014
            return AVERROR(ENOMEM);
1015
        }
1016
        av_freep(&rect->ass);
1017
        rect->ass = final_dialog;
1018
    }
1019
1020
    av_bprint_finalize(&buf, NULL);
1021
    return 0;
1022
}
1023
#endif
1024
1025
1311
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1026
                             int *got_sub_ptr,
1027
                             AVPacket *avpkt)
1028
{
1029
1311
    int ret = 0;
1030
1031

1311
    if (!avpkt->data && avpkt->size) {
1032
        av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1033
        return AVERROR(EINVAL);
1034
    }
1035
1311
    if (!avctx->codec)
1036
        return AVERROR(EINVAL);
1037
1311
    if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1038
        av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1039
        return AVERROR(EINVAL);
1040
    }
1041
1042
1311
    *got_sub_ptr = 0;
1043
1311
    get_subtitle_defaults(sub);
1044
1045

1311
    if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1046
1280
        AVCodecInternal *avci = avctx->internal;
1047
        AVPacket *pkt;
1048
1049
1280
        ret = recode_subtitle(avctx, &pkt, avpkt, avci->buffer_pkt);
1050
1280
        if (ret < 0)
1051
            return ret;
1052
1053

1280
        if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1054
1274
            sub->pts = av_rescale_q(avpkt->pts,
1055
1274
                                    avctx->pkt_timebase, AV_TIME_BASE_Q);
1056
1280
        ret = avctx->codec->decode(avctx, sub, got_sub_ptr, pkt);
1057
        av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1058
                   !!*got_sub_ptr >= !!sub->num_rects);
1059
1060
#if FF_API_ASS_TIMING
1061
1280
        if (avctx->sub_text_format == FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
1062

1
            && *got_sub_ptr && sub->num_rects) {
1063
            const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1064
                                  : avctx->time_base;
1065
            int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1066
            if (err < 0)
1067
                ret = err;
1068
        }
1069
#endif
1070
1071

1280
        if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1072
415
            avctx->pkt_timebase.num) {
1073
415
            AVRational ms = { 1, 1000 };
1074
415
            sub->end_display_time = av_rescale_q(avpkt->duration,
1075
                                                 avctx->pkt_timebase, ms);
1076
        }
1077
1078
1280
        if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
1079
150
            sub->format = 0;
1080
1130
        else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1081
1130
            sub->format = 1;
1082
1083
2024
        for (unsigned i = 0; i < sub->num_rects; i++) {
1084
744
            if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_IGNORE &&
1085

744
                sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1086
                av_log(avctx, AV_LOG_ERROR,
1087
                       "Invalid UTF-8 in decoded subtitles text; "
1088
                       "maybe missing -sub_charenc option\n");
1089
                avsubtitle_free(sub);
1090
                ret = AVERROR_INVALIDDATA;
1091
                break;
1092
            }
1093
        }
1094
1095
1280
        if (*got_sub_ptr)
1096
722
            avctx->frame_number++;
1097
1098
1280
        if (pkt == avci->buffer_pkt) // did we recode?
1099
93
            av_packet_unref(avci->buffer_pkt);
1100
    }
1101
1102
1311
    return ret;
1103
}
1104
1105
1419
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx,
1106
                                              const enum AVPixelFormat *fmt)
1107
{
1108
    const AVPixFmtDescriptor *desc;
1109
    const AVCodecHWConfig *config;
1110
    int i, n;
1111
1112
    // If a device was supplied when the codec was opened, assume that the
1113
    // user wants to use it.
1114

1419
    if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1115
        AVHWDeviceContext *device_ctx =
1116
            (AVHWDeviceContext*)avctx->hw_device_ctx->data;
1117
        for (i = 0;; i++) {
1118
            config = &avctx->codec->hw_configs[i]->public;
1119
            if (!config)
1120
                break;
1121
            if (!(config->methods &
1122
                  AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX))
1123
                continue;
1124
            if (device_ctx->type != config->device_type)
1125
                continue;
1126
            for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1127
                if (config->pix_fmt == fmt[n])
1128
                    return fmt[n];
1129
            }
1130
        }
1131
    }
1132
    // No device or other setup, so we have to choose from things which
1133
    // don't any other external information.
1134
1135
    // If the last element of the list is a software format, choose it
1136
    // (this should be best software format if any exist).
1137
5056
    for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1138
1419
    desc = av_pix_fmt_desc_get(fmt[n - 1]);
1139
1419
    if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1140
1419
        return fmt[n - 1];
1141
1142
    // Finally, traverse the list in order and choose the first entry
1143
    // with no external dependencies (if there is no hardware configuration
1144
    // information available then this just picks the first entry).
1145
    for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1146
        for (i = 0;; i++) {
1147
            config = avcodec_get_hw_config(avctx->codec, i);
1148
            if (!config)
1149
                break;
1150
            if (config->pix_fmt == fmt[n])
1151
                break;
1152
        }
1153
        if (!config) {
1154
            // No specific config available, so the decoder must be able
1155
            // to handle this format without any additional setup.
1156
            return fmt[n];
1157
        }
1158
        if (config->methods & AV_CODEC_HW_CONFIG_METHOD_INTERNAL) {
1159
            // Usable with only internal setup.
1160
            return fmt[n];
1161
        }
1162
    }
1163
1164
    // Nothing is usable, give up.
1165
    return AV_PIX_FMT_NONE;
1166
}
1167
1168
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx,
1169
                                enum AVHWDeviceType dev_type)
1170
{
1171
    AVHWDeviceContext *device_ctx;
1172
    AVHWFramesContext *frames_ctx;
1173
    int ret;
1174
1175
    if (!avctx->hwaccel)
1176
        return AVERROR(ENOSYS);
1177
1178
    if (avctx->hw_frames_ctx)
1179
        return 0;
1180
    if (!avctx->hw_device_ctx) {
1181
        av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1182
                "required for hardware accelerated decoding.\n");
1183
        return AVERROR(EINVAL);
1184
    }
1185
1186
    device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1187
    if (device_ctx->type != dev_type) {
1188
        av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1189
               "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1190
               av_hwdevice_get_type_name(device_ctx->type));
1191
        return AVERROR(EINVAL);
1192
    }
1193
1194
    ret = avcodec_get_hw_frames_parameters(avctx,
1195
                                           avctx->hw_device_ctx,
1196
                                           avctx->hwaccel->pix_fmt,
1197
                                           &avctx->hw_frames_ctx);
1198
    if (ret < 0)
1199
        return ret;
1200
1201
    frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1202
1203
1204
    if (frames_ctx->initial_pool_size) {
1205
        // We guarantee 4 base work surfaces. The function above guarantees 1
1206
        // (the absolute minimum), so add the missing count.
1207
        frames_ctx->initial_pool_size += 3;
1208
    }
1209
1210
    ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1211
    if (ret < 0) {
1212
        av_buffer_unref(&avctx->hw_frames_ctx);
1213
        return ret;
1214
    }
1215
1216
    return 0;
1217
}
1218
1219
int avcodec_get_hw_frames_parameters(AVCodecContext *avctx,
1220
                                     AVBufferRef *device_ref,
1221
                                     enum AVPixelFormat hw_pix_fmt,
1222
                                     AVBufferRef **out_frames_ref)
1223
{
1224
    AVBufferRef *frames_ref = NULL;
1225
    const AVCodecHWConfigInternal *hw_config;
1226
    const AVHWAccel *hwa;
1227
    int i, ret;
1228
1229
    for (i = 0;; i++) {
1230
        hw_config = avctx->codec->hw_configs[i];
1231
        if (!hw_config)
1232
            return AVERROR(ENOENT);
1233
        if (hw_config->public.pix_fmt == hw_pix_fmt)
1234
            break;
1235
    }
1236
1237
    hwa = hw_config->hwaccel;
1238
    if (!hwa || !hwa->frame_params)
1239
        return AVERROR(ENOENT);
1240
1241
    frames_ref = av_hwframe_ctx_alloc(device_ref);
1242
    if (!frames_ref)
1243
        return AVERROR(ENOMEM);
1244
1245
    ret = hwa->frame_params(avctx, frames_ref);
1246
    if (ret >= 0) {
1247
        AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1248
1249
        if (frames_ctx->initial_pool_size) {
1250
            // If the user has requested that extra output surfaces be
1251
            // available then add them here.
1252
            if (avctx->extra_hw_frames > 0)
1253
                frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1254
1255
            // If frame threading is enabled then an extra surface per thread
1256
            // is also required.
1257
            if (avctx->active_thread_type & FF_THREAD_FRAME)
1258
                frames_ctx->initial_pool_size += avctx->thread_count;
1259
        }
1260
1261
        *out_frames_ref = frames_ref;
1262
    } else {
1263
        av_buffer_unref(&frames_ref);
1264
    }
1265
    return ret;
1266
}
1267
1268
static int hwaccel_init(AVCodecContext *avctx,
1269
                        const AVCodecHWConfigInternal *hw_config)
1270
{
1271
    const AVHWAccel *hwaccel;
1272
    int err;
1273
1274
    hwaccel = hw_config->hwaccel;
1275
    if (hwaccel->capabilities & AV_HWACCEL_CODEC_CAP_EXPERIMENTAL &&
1276
        avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1277
        av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1278
               hwaccel->name);
1279
        return AVERROR_PATCHWELCOME;
1280
    }
1281
1282
    if (hwaccel->priv_data_size) {
1283
        avctx->internal->hwaccel_priv_data =
1284
            av_mallocz(hwaccel->priv_data_size);
1285
        if (!avctx->internal->hwaccel_priv_data)
1286
            return AVERROR(ENOMEM);
1287
    }
1288
1289
    avctx->hwaccel = hwaccel;
1290
    if (hwaccel->init) {
1291
        err = hwaccel->init(avctx);
1292
        if (err < 0) {
1293
            av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1294
                   "hwaccel initialisation returned error.\n",
1295
                   av_get_pix_fmt_name(hw_config->public.pix_fmt));
1296
            av_freep(&avctx->internal->hwaccel_priv_data);
1297
            avctx->hwaccel = NULL;
1298
            return err;
1299
        }
1300
    }
1301
1302
    return 0;
1303
}
1304
1305
2347
static void hwaccel_uninit(AVCodecContext *avctx)
1306
{
1307

2347
    if (avctx->hwaccel && avctx->hwaccel->uninit)
1308
        avctx->hwaccel->uninit(avctx);
1309
1310
2347
    av_freep(&avctx->internal->hwaccel_priv_data);
1311
1312
2347
    avctx->hwaccel = NULL;
1313
1314
2347
    av_buffer_unref(&avctx->hw_frames_ctx);
1315
2347
}
1316
1317
2347
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1318
{
1319
    const AVPixFmtDescriptor *desc;
1320
    enum AVPixelFormat *choices;
1321
    enum AVPixelFormat ret, user_choice;
1322
    const AVCodecHWConfigInternal *hw_config;
1323
    const AVCodecHWConfig *config;
1324
    int i, n, err;
1325
1326
    // Find end of list.
1327
8533
    for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1328
    // Must contain at least one entry.
1329
2347
    av_assert0(n >= 1);
1330
    // If a software format is available, it must be the last entry.
1331
2347
    desc = av_pix_fmt_desc_get(fmt[n - 1]);
1332
2347
    if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1333
        // No software format is available.
1334
    } else {
1335
2347
        avctx->sw_pix_fmt = fmt[n - 1];
1336
    }
1337
1338
2347
    choices = av_malloc_array(n + 1, sizeof(*choices));
1339
2347
    if (!choices)
1340
        return AV_PIX_FMT_NONE;
1341
1342
2347
    memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1343
1344
    for (;;) {
1345
        // Remove the previous hwaccel, if there was one.
1346
2347
        hwaccel_uninit(avctx);
1347
1348
2347
        user_choice = avctx->get_format(avctx, choices);
1349
2347
        if (user_choice == AV_PIX_FMT_NONE) {
1350
            // Explicitly chose nothing, give up.
1351
            ret = AV_PIX_FMT_NONE;
1352
            break;
1353
        }
1354
1355
2347
        desc = av_pix_fmt_desc_get(user_choice);
1356
2347
        if (!desc) {
1357
            av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1358
                   "get_format() callback.\n");
1359
            ret = AV_PIX_FMT_NONE;
1360
            break;
1361
        }
1362
2347
        av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1363
               desc->name);
1364
1365
6186
        for (i = 0; i < n; i++) {
1366
6186
            if (choices[i] == user_choice)
1367
2347
                break;
1368
        }
1369
2347
        if (i == n) {
1370
            av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1371
                   "%s not in possible list.\n", desc->name);
1372
            ret = AV_PIX_FMT_NONE;
1373
            break;
1374
        }
1375
1376
2347
        if (avctx->codec->hw_configs) {
1377
6308
            for (i = 0;; i++) {
1378
6308
                hw_config = avctx->codec->hw_configs[i];
1379
6308
                if (!hw_config)
1380
2242
                    break;
1381
4066
                if (hw_config->public.pix_fmt == user_choice)
1382
                    break;
1383
            }
1384
        } else {
1385
105
            hw_config = NULL;
1386
        }
1387
1388
2347
        if (!hw_config) {
1389
            // No config available, so no extra setup required.
1390
2347
            ret = user_choice;
1391
2347
            break;
1392
        }
1393
        config = &hw_config->public;
1394
1395
        if (config->methods &
1396
            AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX &&
1397
            avctx->hw_frames_ctx) {
1398
            const AVHWFramesContext *frames_ctx =
1399
                (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1400
            if (frames_ctx->format != user_choice) {
1401
                av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1402
                       "does not match the format of the provided frames "
1403
                       "context.\n", desc->name);
1404
                goto try_again;
1405
            }
1406
        } else if (config->methods &
1407
                   AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX &&
1408
                   avctx->hw_device_ctx) {
1409
            const AVHWDeviceContext *device_ctx =
1410
                (AVHWDeviceContext*)avctx->hw_device_ctx->data;
1411
            if (device_ctx->type != config->device_type) {
1412
                av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1413
                       "does not match the type of the provided device "
1414
                       "context.\n", desc->name);
1415
                goto try_again;
1416
            }
1417
        } else if (config->methods &
1418
                   AV_CODEC_HW_CONFIG_METHOD_INTERNAL) {
1419
            // Internal-only setup, no additional configuration.
1420
        } else if (config->methods &
1421
                   AV_CODEC_HW_CONFIG_METHOD_AD_HOC) {
1422
            // Some ad-hoc configuration we can't see and can't check.
1423
        } else {
1424
            av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1425
                   "missing configuration.\n", desc->name);
1426
            goto try_again;
1427
        }
1428
        if (hw_config->hwaccel) {
1429
            av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1430
                   "initialisation.\n", desc->name);
1431
            err = hwaccel_init(avctx, hw_config);
1432
            if (err < 0)
1433
                goto try_again;
1434
        }
1435
        ret = user_choice;
1436
        break;
1437
1438
    try_again:
1439
        av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1440
               "get_format() without it.\n", desc->name);
1441
        for (i = 0; i < n; i++) {
1442
            if (choices[i] == user_choice)
1443
                break;
1444
        }
1445
        for (; i + 1 < n; i++)
1446
            choices[i] = choices[i + 1];
1447
        --n;
1448
    }
1449
1450
2347
    av_freep(&choices);
1451
2347
    return ret;
1452
}
1453
1454
16613
static void frame_pool_free(void *opaque, uint8_t *data)
1455
{
1456
16613
    FramePool *pool = (FramePool*)data;
1457
    int i;
1458
1459
83065
    for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1460
66452
        av_buffer_pool_uninit(&pool->pools[i]);
1461
1462
16613
    av_freep(&data);
1463
16613
}
1464
1465
16613
static AVBufferRef *frame_pool_alloc(void)
1466
{
1467
16613
    FramePool *pool = av_mallocz(sizeof(*pool));
1468
    AVBufferRef *buf;
1469
1470
16613
    if (!pool)
1471
        return NULL;
1472
1473
16613
    buf = av_buffer_create((uint8_t*)pool, sizeof(*pool),
1474
                           frame_pool_free, NULL, 0);
1475
16613
    if (!buf) {
1476
        av_freep(&pool);
1477
        return NULL;
1478
    }
1479
1480
16613
    return buf;
1481
}
1482
1483
379509
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
1484
{
1485
759018
    FramePool *pool = avctx->internal->pool ?
1486
379509
                      (FramePool*)avctx->internal->pool->data : NULL;
1487
    AVBufferRef *pool_buf;
1488
    int i, ret, ch, planes;
1489
1490
379509
    if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1491
286873
        int planar = av_sample_fmt_is_planar(frame->format);
1492
286873
        ch     = frame->channels;
1493
286873
        planes = planar ? ch : 1;
1494
    }
1495
1496

379509
    if (pool && pool->format == frame->format) {
1497
369529
        if (avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1498

84381
            pool->width == frame->width && pool->height == frame->height)
1499
84126
            return 0;
1500

285403
        if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pool->planes == planes &&
1501

285135
            pool->channels == ch && frame->nb_samples == pool->samples)
1502
278770
            return 0;
1503
    }
1504
1505
16613
    pool_buf = frame_pool_alloc();
1506
16613
    if (!pool_buf)
1507
        return AVERROR(ENOMEM);
1508
16613
    pool = (FramePool*)pool_buf->data;
1509
1510
16613
    switch (avctx->codec_type) {
1511
8510
    case AVMEDIA_TYPE_VIDEO: {
1512
        int linesize[4];
1513
8510
        int w = frame->width;
1514
8510
        int h = frame->height;
1515
        int unaligned;
1516
        ptrdiff_t linesize1[4];
1517
        size_t size[4];
1518
1519
8510
        avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1520
1521
        do {
1522
            // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1523
            // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1524
17097
            ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1525
17097
            if (ret < 0)
1526
                goto fail;
1527
            // increase alignment of w for next try (rhs gives the lowest bit set in w)
1528
17097
            w += w & ~(w - 1);
1529
1530
17097
            unaligned = 0;
1531
85485
            for (i = 0; i < 4; i++)
1532
68388
                unaligned |= linesize[i] % pool->stride_align[i];
1533
17097
        } while (unaligned);
1534
1535
42550
        for (i = 0; i < 4; i++)
1536
34040
            linesize1[i] = linesize[i];
1537
8510
        ret = av_image_fill_plane_sizes(size, avctx->pix_fmt, h, linesize1);
1538
8510
        if (ret < 0)
1539
            goto fail;
1540
1541
42550
        for (i = 0; i < 4; i++) {
1542
34040
            pool->linesize[i] = linesize[i];
1543
34040
            if (size[i]) {
1544
24162
                if (size[i] > INT_MAX - (16 + STRIDE_ALIGN - 1)) {
1545
                    ret = AVERROR(EINVAL);
1546
                    goto fail;
1547
                }
1548
24162
                pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1549
                                                     CONFIG_MEMORY_POISONING ?
1550
                                                        NULL :
1551
                                                        av_buffer_allocz);
1552
24162
                if (!pool->pools[i]) {
1553
                    ret = AVERROR(ENOMEM);
1554
                    goto fail;
1555
                }
1556
            }
1557
        }
1558
8510
        pool->format = frame->format;
1559
8510
        pool->width  = frame->width;
1560
8510
        pool->height = frame->height;
1561
1562
8510
        break;
1563
        }
1564
8103
    case AVMEDIA_TYPE_AUDIO: {
1565
8103
        ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1566
8103
                                         frame->nb_samples, frame->format, 0);
1567
8103
        if (ret < 0)
1568
            goto fail;
1569
1570
8103
        pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1571
8103
        if (!pool->pools[0]) {
1572
            ret = AVERROR(ENOMEM);
1573
            goto fail;
1574
        }
1575
1576
8103
        pool->format     = frame->format;
1577
8103
        pool->planes     = planes;
1578
8103
        pool->channels   = ch;
1579
8103
        pool->samples = frame->nb_samples;
1580
8103
        break;
1581
        }
1582
    default: av_assert0(0);
1583
    }
1584
1585
16613
    av_buffer_unref(&avctx->internal->pool);
1586
16613
    avctx->internal->pool = pool_buf;
1587
1588
16613
    return 0;
1589
fail:
1590
    av_buffer_unref(&pool_buf);
1591
    return ret;
1592
}
1593
1594
286873
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
1595
{
1596
286873
    FramePool *pool = (FramePool*)avctx->internal->pool->data;
1597
286873
    int planes = pool->planes;
1598
    int i;
1599
1600
286873
    frame->linesize[0] = pool->linesize[0];
1601
1602
286873
    if (planes > AV_NUM_DATA_POINTERS) {
1603
        frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
1604
        frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
1605
        frame->extended_buf  = av_mallocz_array(frame->nb_extended_buf,
1606
                                          sizeof(*frame->extended_buf));
1607
        if (!frame->extended_data || !frame->extended_buf) {
1608
            av_freep(&frame->extended_data);
1609
            av_freep(&frame->extended_buf);
1610
            return AVERROR(ENOMEM);
1611
        }
1612
    } else {
1613
286873
        frame->extended_data = frame->data;
1614
286873
        av_assert0(frame->nb_extended_buf == 0);
1615
    }
1616
1617
716082
    for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1618
429209
        frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1619
429209
        if (!frame->buf[i])
1620
            goto fail;
1621
429209
        frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1622
    }
1623
286873
    for (i = 0; i < frame->nb_extended_buf; i++) {
1624
        frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
1625
        if (!frame->extended_buf[i])
1626
            goto fail;
1627
        frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
1628
    }
1629
1630
286873
    if (avctx->debug & FF_DEBUG_BUFFERS)
1631
        av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1632
1633
286873
    return 0;
1634
fail:
1635
    av_frame_unref(frame);
1636
    return AVERROR(ENOMEM);
1637
}
1638
1639
92636
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
1640
{
1641
92636
    FramePool *pool = (FramePool*)s->internal->pool->data;
1642
92636
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
1643
    int i;
1644
1645


92636
    if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1646
        av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1647
        return -1;
1648
    }
1649
1650
92636
    if (!desc) {
1651
        av_log(s, AV_LOG_ERROR,
1652
            "Unable to get pixel format descriptor for format %s\n",
1653
            av_get_pix_fmt_name(pic->format));
1654
        return AVERROR(EINVAL);
1655
    }
1656
1657
92636
    memset(pic->data, 0, sizeof(pic->data));
1658
92636
    pic->extended_data = pic->data;
1659
1660

357991
    for (i = 0; i < 4 && pool->pools[i]; i++) {
1661
265355
        pic->linesize[i] = pool->linesize[i];
1662
1663
265355
        pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1664
265355
        if (!pic->buf[i])
1665
            goto fail;
1666
1667
265355
        pic->data[i] = pic->buf[i]->data;
1668
    }
1669
568369
    for (; i < AV_NUM_DATA_POINTERS; i++) {
1670
475733
        pic->data[i] = NULL;
1671
475733
        pic->linesize[i] = 0;
1672
    }
1673
92636
    if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1674

90550
        ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1675
2362
        avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1676
1677
92636
    if (s->debug & FF_DEBUG_BUFFERS)
1678
        av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1679
1680
92636
    return 0;
1681
fail:
1682
    av_frame_unref(pic);
1683
    return AVERROR(ENOMEM);
1684
}
1685
1686
379509
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
1687
{
1688
    int ret;
1689
1690
379509
    if (avctx->hw_frames_ctx) {
1691
        ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1692
        frame->width  = avctx->coded_width;
1693
        frame->height = avctx->coded_height;
1694
        return ret;
1695
    }
1696
1697
379509
    if ((ret = update_frame_pool(avctx, frame)) < 0)
1698
        return ret;
1699
1700
379509
    switch (avctx->codec_type) {
1701
92636
    case AVMEDIA_TYPE_VIDEO:
1702
92636
        return video_get_buffer(avctx, frame);
1703
286873
    case AVMEDIA_TYPE_AUDIO:
1704
286873
        return audio_get_buffer(avctx, frame);
1705
    default:
1706
        return -1;
1707
    }
1708
}
1709
1710
406227
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
1711
{
1712
    buffer_size_t size;
1713
    const uint8_t *side_metadata;
1714
1715
406227
    AVDictionary **frame_md = &frame->metadata;
1716
1717
406227
    side_metadata = av_packet_get_side_data(avpkt,
1718
                                            AV_PKT_DATA_STRINGS_METADATA, &size);
1719
406227
    return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1720
}
1721
1722
406227
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
1723
{
1724
406227
    AVPacket *pkt = avctx->internal->last_pkt_props;
1725
    static const struct {
1726
        enum AVPacketSideDataType packet;
1727
        enum AVFrameSideDataType frame;
1728
    } sd[] = {
1729
        { AV_PKT_DATA_REPLAYGAIN ,                AV_FRAME_DATA_REPLAYGAIN },
1730
        { AV_PKT_DATA_DISPLAYMATRIX,              AV_FRAME_DATA_DISPLAYMATRIX },
1731
        { AV_PKT_DATA_SPHERICAL,                  AV_FRAME_DATA_SPHERICAL },
1732
        { AV_PKT_DATA_STEREO3D,                   AV_FRAME_DATA_STEREO3D },
1733
        { AV_PKT_DATA_AUDIO_SERVICE_TYPE,         AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
1734
        { AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
1735
        { AV_PKT_DATA_CONTENT_LIGHT_LEVEL,        AV_FRAME_DATA_CONTENT_LIGHT_LEVEL },
1736
        { AV_PKT_DATA_A53_CC,                     AV_FRAME_DATA_A53_CC },
1737
        { AV_PKT_DATA_ICC_PROFILE,                AV_FRAME_DATA_ICC_PROFILE },
1738
        { AV_PKT_DATA_S12M_TIMECODE,              AV_FRAME_DATA_S12M_TIMECODE },
1739
    };
1740
1741

406227
    if (IS_EMPTY(pkt) && av_fifo_size(avctx->internal->pkt_props) >= sizeof(*pkt))
1742
        av_fifo_generic_read(avctx->internal->pkt_props,
1743
                             pkt, sizeof(*pkt), NULL);
1744
1745
406227
    frame->pts = pkt->pts;
1746
#if FF_API_PKT_PTS
1747
FF_DISABLE_DEPRECATION_WARNINGS
1748
406227
    frame->pkt_pts = pkt->pts;
1749
FF_ENABLE_DEPRECATION_WARNINGS
1750
#endif
1751
406227
    frame->pkt_pos      = pkt->pos;
1752
406227
    frame->pkt_duration = pkt->duration;
1753
406227
    frame->pkt_size     = pkt->size;
1754
1755
4468497
    for (int i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1756
        buffer_size_t size;
1757
4062270
        uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1758
4062270
        if (packet_sd) {
1759
211
            AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
1760
                                                               sd[i].frame,
1761
                                                               size);
1762
211
            if (!frame_sd)
1763
                return AVERROR(ENOMEM);
1764
1765
211
            memcpy(frame_sd->data, packet_sd, size);
1766
        }
1767
    }
1768
406227
    add_metadata_from_side_data(pkt, frame);
1769
1770
406227
    if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1771
199
        frame->flags |= AV_FRAME_FLAG_DISCARD;
1772
    } else {
1773
406028
        frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
1774
    }
1775
406227
    frame->reordered_opaque = avctx->reordered_opaque;
1776
1777
406227
    if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
1778
406227
        frame->color_primaries = avctx->color_primaries;
1779
406227
    if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
1780
406227
        frame->color_trc = avctx->color_trc;
1781
406227
    if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
1782
405792
        frame->colorspace = avctx->colorspace;
1783
406227
    if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
1784
406009
        frame->color_range = avctx->color_range;
1785
406227
    if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
1786
406227
        frame->chroma_location = avctx->chroma_sample_location;
1787
1788
406227
    switch (avctx->codec->type) {
1789
119354
    case AVMEDIA_TYPE_VIDEO:
1790
119354
        frame->format              = avctx->pix_fmt;
1791
119354
        if (!frame->sample_aspect_ratio.num)
1792
119235
            frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
1793
1794

217321
        if (frame->width && frame->height &&
1795
97967
            av_image_check_sar(frame->width, frame->height,
1796
                               frame->sample_aspect_ratio) < 0) {
1797
            av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1798
                   frame->sample_aspect_ratio.num,
1799
                   frame->sample_aspect_ratio.den);
1800
            frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1801
        }
1802
1803
119354
        break;
1804
286873
    case AVMEDIA_TYPE_AUDIO:
1805
286873
        if (!frame->sample_rate)
1806
286873
            frame->sample_rate    = avctx->sample_rate;
1807
286873
        if (frame->format < 0)
1808
286873
            frame->format         = avctx->sample_fmt;
1809
286873
        if (!frame->channel_layout) {
1810
286873
            if (avctx->channel_layout) {
1811
285803
                 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
1812
285803
                     avctx->channels) {
1813
                     av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1814
                            "configuration.\n");
1815
                     return AVERROR(EINVAL);
1816
                 }
1817
1818
285803
                frame->channel_layout = avctx->channel_layout;
1819
            } else {
1820
1070
                if (avctx->channels > FF_SANE_NB_CHANNELS) {
1821
                    av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1822
                           avctx->channels);
1823
                    return AVERROR(ENOSYS);
1824
                }
1825
            }
1826
        }
1827
286873
        frame->channels = avctx->channels;
1828
286873
        break;
1829
    }
1830
406227
    return 0;
1831
}
1832
1833
379430
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
1834
{
1835
379430
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1836
        int i;
1837
92557
        int num_planes = av_pix_fmt_count_planes(frame->format);
1838
92557
        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
1839
92557
        int flags = desc ? desc->flags : 0;
1840

92557
        if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1841
2086
            num_planes = 2;
1842

92557
        if ((flags & FF_PSEUDOPAL) && frame->data[1])
1843
276
            num_planes = 2;
1844
357675
        for (i = 0; i < num_planes; i++) {
1845
265118
            av_assert0(frame->data[i]);
1846
        }
1847
        // For formats without data like hwaccel allow unused pointers to be non-NULL.
1848

567895
        for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1849
475338
            if (frame->data[i])
1850
                av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1851
475338
            frame->data[i] = NULL;
1852
        }
1853
    }
1854
379430
}
1855
1856
379430
static void decode_data_free(void *opaque, uint8_t *data)
1857
{
1858
379430
    FrameDecodeData *fdd = (FrameDecodeData*)data;
1859
1860
379430
    if (fdd->post_process_opaque_free)
1861
        fdd->post_process_opaque_free(fdd->post_process_opaque);
1862
1863
379430
    if (fdd->hwaccel_priv_free)
1864
        fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1865
1866
379430
    av_freep(&fdd);
1867
379430
}
1868
1869
379430
int ff_attach_decode_data(AVFrame *frame)
1870
{
1871
    AVBufferRef *fdd_buf;
1872
    FrameDecodeData *fdd;
1873
1874
    av_assert1(!frame->private_ref);
1875
379430
    av_buffer_unref(&frame->private_ref);
1876
1877
379430
    fdd = av_mallocz(sizeof(*fdd));
1878
379430
    if (!fdd)
1879
        return AVERROR(ENOMEM);
1880
1881
379430
    fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1882
                               NULL, AV_BUFFER_FLAG_READONLY);
1883
379430
    if (!fdd_buf) {
1884
        av_freep(&fdd);
1885
        return AVERROR(ENOMEM);
1886
    }
1887
1888
379430
    frame->private_ref = fdd_buf;
1889
1890
379430
    return 0;
1891
}
1892
1893
379523
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1894
{
1895
379523
    const AVHWAccel *hwaccel = avctx->hwaccel;
1896
379523
    int override_dimensions = 1;
1897
    int ret;
1898
1899
379523
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1900

185300
        if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN ||
1901
185300
            (ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
1902
93
            av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1903
93
            ret = AVERROR(EINVAL);
1904
93
            goto fail;
1905
        }
1906
1907

92557
        if (frame->width <= 0 || frame->height <= 0) {
1908
82899
            frame->width  = FFMAX(avctx->width,  AV_CEIL_RSHIFT(avctx->coded_width,  avctx->lowres));
1909
82899
            frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1910
82899
            override_dimensions = 0;
1911
        }
1912
1913


92557
        if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1914
            av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1915
            ret = AVERROR(EINVAL);
1916
            goto fail;
1917
        }
1918
286873
    } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1919
286873
        if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) {
1920
            av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
1921
            ret = AVERROR(EINVAL);
1922
            goto fail;
1923
        }
1924
    }
1925
379430
    ret = ff_decode_frame_props(avctx, frame);
1926
379430
    if (ret < 0)
1927
        goto fail;
1928
1929
379430
    if (hwaccel) {
1930
        if (hwaccel->alloc_frame) {
1931
            ret = hwaccel->alloc_frame(avctx, frame);
1932
            goto end;
1933
        }
1934
    } else
1935
379430
        avctx->sw_pix_fmt = avctx->pix_fmt;
1936
1937
379430
    ret = avctx->get_buffer2(avctx, frame, flags);
1938
379430
    if (ret < 0)
1939
        goto fail;
1940
1941
379430
    validate_avframe_allocation(avctx, frame);
1942
1943
379430
    ret = ff_attach_decode_data(frame);
1944
379430
    if (ret < 0)
1945
        goto fail;
1946
1947
379430
end:
1948

379430
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1949
82899
        !(avctx->codec->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)) {
1950
49864
        frame->width  = avctx->width;
1951
49864
        frame->height = avctx->height;
1952
    }
1953
1954
329566
fail:
1955
379523
    if (ret < 0) {
1956
93
        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1957
93
        av_frame_unref(frame);
1958
    }
1959
1960
379523
    return ret;
1961
}
1962
1963
6973
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
1964
{
1965
    AVFrame *tmp;
1966
    int ret;
1967
1968
6973
    av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1969
1970


6973
    if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1971
        av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1972
               frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1973
        av_frame_unref(frame);
1974
    }
1975
1976
6973
    if (!frame->data[0])
1977
121
        return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1978
1979

6852
    if ((flags & FF_REGET_BUFFER_FLAG_READONLY) || av_frame_is_writable(frame))
1980
5301
        return ff_decode_frame_props(avctx, frame);
1981
1982
1551
    tmp = av_frame_alloc();
1983
1551
    if (!tmp)
1984
        return AVERROR(ENOMEM);
1985
1986
1551
    av_frame_move_ref(tmp, frame);
1987
1988
1551
    ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1989
1551
    if (ret < 0) {
1990
        av_frame_free(&tmp);
1991
        return ret;
1992
    }
1993
1994
1551
    av_frame_copy(frame, tmp);
1995
1551
    av_frame_free(&tmp);
1996
1997
1551
    return 0;
1998
}
1999
2000
6973
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
2001
{
2002
6973
    int ret = reget_buffer_internal(avctx, frame, flags);
2003
6973
    if (ret < 0)
2004
        av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
2005
6973
    return ret;
2006
}
2007
2008
12821
int ff_decode_preinit(AVCodecContext *avctx)
2009
{
2010
12821
    int ret = 0;
2011
2012
    /* if the decoder init function was already called previously,
2013
     * free the already allocated subtitle_header before overwriting it */
2014
12821
    av_freep(&avctx->subtitle_header);
2015
2016
#if FF_API_THREAD_SAFE_CALLBACKS
2017
FF_DISABLE_DEPRECATION_WARNINGS
2018
12821
    if ((avctx->thread_type & FF_THREAD_FRAME) &&
2019
12780
        avctx->get_buffer2 != avcodec_default_get_buffer2 &&
2020
5783
        !avctx->thread_safe_callbacks) {
2021
        av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a "
2022
               "custom get_buffer2() implementation which is not marked as "
2023
               "thread safe. This is not supported anymore, make your "
2024
               "callback thread-safe.\n");
2025
    }
2026
FF_ENABLE_DEPRECATION_WARNINGS
2027
#endif
2028
2029

12821
    if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && avctx->channels == 0 &&
2030
208
        !(avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)) {
2031
        av_log(avctx, AV_LOG_ERROR, "Decoder requires channel count but channels not set\n");
2032
        return AVERROR(EINVAL);
2033
    }
2034

12821
    if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
2035
        av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2036
               avctx->codec->max_lowres);
2037
        avctx->lowres = avctx->codec->max_lowres;
2038
    }
2039
12821
    if (avctx->sub_charenc) {
2040
6
        if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
2041
            av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
2042
                   "supported with subtitles codecs\n");
2043
            return AVERROR(EINVAL);
2044
6
        } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
2045
            av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
2046
                   "subtitles character encoding will be ignored\n",
2047
                   avctx->codec_descriptor->name);
2048
            avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
2049
        } else {
2050
            /* input character encoding is set for a text based subtitle
2051
             * codec at this point */
2052
6
            if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
2053
6
                avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
2054
2055
6
            if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
2056
#if CONFIG_ICONV
2057
6
                iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
2058
6
                if (cd == (iconv_t)-1) {
2059
                    ret = AVERROR(errno);
2060
                    av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
2061
                           "with input character encoding \"%s\"\n", avctx->sub_charenc);
2062
                    return ret;
2063
                }
2064
6
                iconv_close(cd);
2065
#else
2066
                av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
2067
                       "conversion needs a libavcodec built with iconv support "
2068
                       "for this codec\n");
2069
                return AVERROR(ENOSYS);
2070
#endif
2071
            }
2072
        }
2073
    }
2074
2075
12821
    avctx->pts_correction_num_faulty_pts =
2076
12821
    avctx->pts_correction_num_faulty_dts = 0;
2077
12821
    avctx->pts_correction_last_pts =
2078
12821
    avctx->pts_correction_last_dts = INT64_MIN;
2079
2080
12821
    if (   !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
2081
        && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
2082
        av_log(avctx, AV_LOG_WARNING,
2083
               "gray decoding requested but not enabled at configuration time\n");
2084
12821
    if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
2085
5
        avctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
2086
    }
2087
2088
12821
    ret = decode_bsfs_init(avctx);
2089
12821
    if (ret < 0)
2090
        return ret;
2091
2092
12821
    return 0;
2093
}
2094
2095
1263
int ff_copy_palette(void *dst, const AVPacket *src, void *logctx)
2096
{
2097
    buffer_size_t size;
2098
1263
    const void *pal = av_packet_get_side_data(src, AV_PKT_DATA_PALETTE, &size);
2099
2100

1263
    if (pal && size == AVPALETTE_SIZE) {
2101
24
        memcpy(dst, pal, AVPALETTE_SIZE);
2102
24
        return 1;
2103
1239
    } else if (pal) {
2104
        av_log(logctx, AV_LOG_ERROR, "Palette size %d is wrong\n", size);
2105
    }
2106
1239
    return 0;
2107
}