GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/decode.c Lines: 716 1181 60.6 %
Date: 2020-04-02 05:41:20 Branches: 504 909 55.4 %

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 "hwaccel.h"
45
#include "internal.h"
46
#include "thread.h"
47
48
408246
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
49
{
50
408246
    int size = 0, ret;
51
    const uint8_t *data;
52
    uint32_t flags;
53
    int64_t val;
54
55
408246
    data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
56
408246
    if (!data)
57
408244
        return 0;
58
59
2
    if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
60
        av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
61
               "changes, but PARAM_CHANGE side data was sent to it.\n");
62
        ret = AVERROR(EINVAL);
63
        goto fail2;
64
    }
65
66
2
    if (size < 4)
67
        goto fail;
68
69
2
    flags = bytestream_get_le32(&data);
70
2
    size -= 4;
71
72
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
73
        if (size < 4)
74
            goto fail;
75
        val = bytestream_get_le32(&data);
76
        if (val <= 0 || val > INT_MAX) {
77
            av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
78
            ret = AVERROR_INVALIDDATA;
79
            goto fail2;
80
        }
81
        avctx->channels = val;
82
        size -= 4;
83
    }
84
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
85
        if (size < 8)
86
            goto fail;
87
        avctx->channel_layout = bytestream_get_le64(&data);
88
        size -= 8;
89
    }
90
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
91
        if (size < 4)
92
            goto fail;
93
        val = bytestream_get_le32(&data);
94
        if (val <= 0 || val > INT_MAX) {
95
            av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
96
            ret = AVERROR_INVALIDDATA;
97
            goto fail2;
98
        }
99
        avctx->sample_rate = val;
100
        size -= 4;
101
    }
102
2
    if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
103
2
        if (size < 8)
104
            goto fail;
105
2
        avctx->width  = bytestream_get_le32(&data);
106
2
        avctx->height = bytestream_get_le32(&data);
107
2
        size -= 8;
108
2
        ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
109
2
        if (ret < 0)
110
            goto fail2;
111
    }
112
113
2
    return 0;
114
fail:
115
    av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
116
    ret = AVERROR_INVALIDDATA;
117
fail2:
118
    if (ret < 0) {
119
        av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
120
        if (avctx->err_recognition & AV_EF_EXPLODE)
121
            return ret;
122
    }
123
    return 0;
124
}
125
126
409439
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
127
{
128
409439
    int ret = 0;
129
130
409439
    av_packet_unref(avci->last_pkt_props);
131
409439
    if (pkt) {
132
409439
        ret = av_packet_copy_props(avci->last_pkt_props, pkt);
133
409439
        if (!ret)
134
409439
            avci->last_pkt_props->size = pkt->size; // HACK: Needed for ff_decode_frame_props().
135
    }
136
409439
    return ret;
137
}
138
139
3522
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
140
{
141
    int ret;
142
143
    /* move the original frame to our backup */
144
3522
    av_frame_unref(avci->to_free);
145
3522
    av_frame_move_ref(avci->to_free, frame);
146
147
    /* now copy everything except the AVBufferRefs back
148
     * note that we make a COPY of the side data, so calling av_frame_free() on
149
     * the caller's frame will work properly */
150
3522
    ret = av_frame_copy_props(frame, avci->to_free);
151
3522
    if (ret < 0)
152
        return ret;
153
154
3522
    memcpy(frame->data,     avci->to_free->data,     sizeof(frame->data));
155
3522
    memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
156
3522
    if (avci->to_free->extended_data != avci->to_free->data) {
157
        int planes = avci->to_free->channels;
158
        int size   = planes * sizeof(*frame->extended_data);
159
160
        if (!size) {
161
            av_frame_unref(frame);
162
            return AVERROR_BUG;
163
        }
164
165
        frame->extended_data = av_malloc(size);
166
        if (!frame->extended_data) {
167
            av_frame_unref(frame);
168
            return AVERROR(ENOMEM);
169
        }
170
        memcpy(frame->extended_data, avci->to_free->extended_data,
171
               size);
172
    } else
173
3522
        frame->extended_data = frame->data;
174
175
3522
    frame->format         = avci->to_free->format;
176
3522
    frame->width          = avci->to_free->width;
177
3522
    frame->height         = avci->to_free->height;
178
3522
    frame->channel_layout = avci->to_free->channel_layout;
179
3522
    frame->nb_samples     = avci->to_free->nb_samples;
180
3522
    frame->channels       = avci->to_free->channels;
181
182
3522
    return 0;
183
}
184
185
12410
int ff_decode_bsfs_init(AVCodecContext *avctx)
186
{
187
12410
    AVCodecInternal *avci = avctx->internal;
188
12410
    DecodeFilterContext *s = &avci->filter;
189
    const char *bsfs_str;
190
    int ret;
191
192
12410
    if (s->nb_bsfs)
193
        return 0;
194
195
12410
    bsfs_str = avctx->codec->bsfs ? avctx->codec->bsfs : "null";
196

24820
    while (bsfs_str && *bsfs_str) {
197
        AVBSFContext **tmp;
198
        const AVBitStreamFilter *filter;
199
        char *bsf, *bsf_options_str, *bsf_name;
200
201
12410
        bsf = av_get_token(&bsfs_str, ",");
202
12410
        if (!bsf) {
203
            ret = AVERROR(ENOMEM);
204
            goto fail;
205
        }
206
12410
        bsf_name = av_strtok(bsf, "=", &bsf_options_str);
207
12410
        if (!bsf_name) {
208
            av_freep(&bsf);
209
            ret = AVERROR(ENOMEM);
210
            goto fail;
211
        }
212
213
12410
        filter = av_bsf_get_by_name(bsf_name);
214
12410
        if (!filter) {
215
            av_log(avctx, AV_LOG_ERROR, "A non-existing bitstream filter %s "
216
                   "requested by a decoder. This is a bug, please report it.\n",
217
                   bsf_name);
218
            av_freep(&bsf);
219
            ret = AVERROR_BUG;
220
            goto fail;
221
        }
222
223
12410
        tmp = av_realloc_array(s->bsfs, s->nb_bsfs + 1, sizeof(*s->bsfs));
224
12410
        if (!tmp) {
225
            av_freep(&bsf);
226
            ret = AVERROR(ENOMEM);
227
            goto fail;
228
        }
229
12410
        s->bsfs = tmp;
230
231
12410
        ret = av_bsf_alloc(filter, &s->bsfs[s->nb_bsfs]);
232
12410
        if (ret < 0) {
233
            av_freep(&bsf);
234
            goto fail;
235
        }
236
12410
        s->nb_bsfs++;
237
238
12410
        if (s->nb_bsfs == 1) {
239
            /* We do not currently have an API for passing the input timebase into decoders,
240
             * but no filters used here should actually need it.
241
             * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
242
12410
            s->bsfs[s->nb_bsfs - 1]->time_base_in = (AVRational){ 1, 90000 };
243
12410
            ret = avcodec_parameters_from_context(s->bsfs[s->nb_bsfs - 1]->par_in,
244
                                                  avctx);
245
        } else {
246
            s->bsfs[s->nb_bsfs - 1]->time_base_in = s->bsfs[s->nb_bsfs - 2]->time_base_out;
247
            ret = avcodec_parameters_copy(s->bsfs[s->nb_bsfs - 1]->par_in,
248
                                          s->bsfs[s->nb_bsfs - 2]->par_out);
249
        }
250
12410
        if (ret < 0) {
251
            av_freep(&bsf);
252
            goto fail;
253
        }
254
255

12410
        if (bsf_options_str && filter->priv_class) {
256
            const AVOption *opt = av_opt_next(s->bsfs[s->nb_bsfs - 1]->priv_data, NULL);
257
            const char * shorthand[2] = {NULL};
258
259
            if (opt)
260
                shorthand[0] = opt->name;
261
262
            ret = av_opt_set_from_string(s->bsfs[s->nb_bsfs - 1]->priv_data, bsf_options_str, shorthand, "=", ":");
263
            if (ret < 0) {
264
                if (ret != AVERROR(ENOMEM)) {
265
                    av_log(avctx, AV_LOG_ERROR, "Invalid options for bitstream filter %s "
266
                           "requested by the decoder. This is a bug, please report it.\n",
267
                           bsf_name);
268
                    ret = AVERROR_BUG;
269
                }
270
                av_freep(&bsf);
271
                goto fail;
272
            }
273
        }
274
12410
        av_freep(&bsf);
275
276
12410
        ret = av_bsf_init(s->bsfs[s->nb_bsfs - 1]);
277
12410
        if (ret < 0)
278
            goto fail;
279
280
12410
        if (*bsfs_str)
281
            bsfs_str++;
282
    }
283
284
12410
    return 0;
285
fail:
286
    ff_decode_bsfs_uninit(avctx);
287
    return ret;
288
}
289
290
/* try to get one output packet from the filter chain */
291
822606
static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
292
{
293
822606
    DecodeFilterContext *s = &avctx->internal->filter;
294
    int idx, ret;
295
296
    /* start with the last filter in the chain */
297
822606
    idx = s->nb_bsfs - 1;
298
1231219
    while (idx >= 0) {
299
        /* request a packet from the currently selected filter */
300
822606
        ret = av_bsf_receive_packet(s->bsfs[idx], pkt);
301
822606
        if (ret == AVERROR(EAGAIN)) {
302
            /* no packets available, try the next filter up the chain */
303
408613
            idx--;
304
408613
            continue;
305

413993
        } else if (ret < 0 && ret != AVERROR_EOF) {
306
            return ret;
307
        }
308
309
        /* got a packet or EOF -- pass it to the caller or to the next filter
310
         * down the chain */
311
413993
        if (idx == s->nb_bsfs - 1) {
312
413993
            return ret;
313
        } else {
314
            idx++;
315
            ret = av_bsf_send_packet(s->bsfs[idx], ret < 0 ? NULL : pkt);
316
            if (ret < 0) {
317
                av_log(avctx, AV_LOG_ERROR,
318
                       "Error pre-processing a packet before decoding\n");
319
                av_packet_unref(pkt);
320
                return ret;
321
            }
322
        }
323
    }
324
325
408613
    return AVERROR(EAGAIN);
326
}
327
328
822608
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
329
{
330
822608
    AVCodecInternal *avci = avctx->internal;
331
    int ret;
332
333
822608
    if (avci->draining)
334
2
        return AVERROR_EOF;
335
336
822606
    ret = bsfs_poll(avctx, pkt);
337
822606
    if (ret == AVERROR_EOF)
338
5747
        avci->draining = 1;
339
822606
    if (ret < 0)
340
414360
        return ret;
341
342
408246
    ret = extract_packet_props(avctx->internal, pkt);
343
408246
    if (ret < 0)
344
        goto finish;
345
346
408246
    ret = apply_param_change(avctx, pkt);
347
408246
    if (ret < 0)
348
        goto finish;
349
350
408246
    if (avctx->codec->receive_frame)
351
92
        avci->compat_decode_consumed += pkt->size;
352
353
408246
    return 0;
354
finish:
355
    av_packet_unref(pkt);
356
    return ret;
357
}
358
359
/**
360
 * Attempt to guess proper monotonic timestamps for decoded video frames
361
 * which might have incorrect times. Input timestamps may wrap around, in
362
 * which case the output will as well.
363
 *
364
 * @param pts the pts field of the decoded AVPacket, as passed through
365
 * AVFrame.pts
366
 * @param dts the dts field of the decoded AVPacket
367
 * @return one of the input values, may be AV_NOPTS_VALUE
368
 */
369
428874
static int64_t guess_correct_pts(AVCodecContext *ctx,
370
                                 int64_t reordered_pts, int64_t dts)
371
{
372
428874
    int64_t pts = AV_NOPTS_VALUE;
373
374
428874
    if (dts != AV_NOPTS_VALUE) {
375
394504
        ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
376
394504
        ctx->pts_correction_last_dts = dts;
377
34370
    } else if (reordered_pts != AV_NOPTS_VALUE)
378
192
        ctx->pts_correction_last_dts = reordered_pts;
379
380
428874
    if (reordered_pts != AV_NOPTS_VALUE) {
381
365807
        ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
382
365807
        ctx->pts_correction_last_pts = reordered_pts;
383
63067
    } else if(dts != AV_NOPTS_VALUE)
384
28889
        ctx->pts_correction_last_pts = dts;
385
386

428874
    if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
387
428059
       && reordered_pts != AV_NOPTS_VALUE)
388
364993
        pts = reordered_pts;
389
    else
390
63881
        pts = dts;
391
392
428874
    return pts;
393
}
394
395
/*
396
 * The core of the receive_frame_wrapper for the decoders implementing
397
 * the simple API. Certain decoders might consume partial packets without
398
 * returning any output, so this function needs to be called in a loop until it
399
 * returns EAGAIN.
400
 **/
401
857423
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame)
402
{
403
857423
    AVCodecInternal   *avci = avctx->internal;
404
857423
    DecodeSimpleContext *ds = &avci->ds;
405
857423
    AVPacket           *pkt = ds->in_pkt;
406
    // copy to ensure we do not change pkt
407
    int got_frame, actual_got_frame;
408
    int ret;
409
410

857423
    if (!pkt->data && !avci->draining) {
411
822420
        av_packet_unref(pkt);
412
822420
        ret = ff_decode_get_packet(avctx, pkt);
413

822420
        if (ret < 0 && ret != AVERROR_EOF)
414
408521
            return ret;
415
    }
416
417
    // Some codecs (at least wma lossless) will crash when feeding drain packets
418
    // after EOF was signaled.
419
448902
    if (avci->draining_done)
420
6043
        return AVERROR_EOF;
421
422
442859
    if (!pkt->data &&
423
6470
        !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
424
5123
          avctx->active_thread_type & FF_THREAD_FRAME))
425
5074
        return AVERROR_EOF;
426
427
437785
    got_frame = 0;
428
429
437785
    if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
430
582
        ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
431
    } else {
432
437203
        ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
433
434
437203
        if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
435
437203
            frame->pkt_dts = pkt->dts;
436
437203
        if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
437
114190
            if(!avctx->has_b_frames)
438
82872
                frame->pkt_pos = pkt->pos;
439
            //FIXME these should be under if(!avctx->has_b_frames)
440
            /* get_buffer is supposed to set frame parameters */
441
114190
            if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
442
21596
                if (!frame->sample_aspect_ratio.num)  frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
443
21596
                if (!frame->width)                    frame->width               = avctx->width;
444
21596
                if (!frame->height)                   frame->height              = avctx->height;
445
21596
                if (frame->format == AV_PIX_FMT_NONE) frame->format              = avctx->pix_fmt;
446
            }
447
        }
448
    }
449
437785
    emms_c();
450
437785
    actual_got_frame = got_frame;
451
452
437785
    if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
453
114300
        if (frame->flags & AV_FRAME_FLAG_DISCARD)
454
179
            got_frame = 0;
455
114300
        if (got_frame)
456
106792
            frame->best_effort_timestamp = guess_correct_pts(avctx,
457
                                                             frame->pts,
458
                                                             frame->pkt_dts);
459
323485
    } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
460
        uint8_t *side;
461
        int side_size;
462
323485
        uint32_t discard_padding = 0;
463
323485
        uint8_t skip_reason = 0;
464
323485
        uint8_t discard_reason = 0;
465
466

323485
        if (ret >= 0 && got_frame) {
467
322082
            frame->best_effort_timestamp = guess_correct_pts(avctx,
468
                                                             frame->pts,
469
                                                             frame->pkt_dts);
470
322082
            if (frame->format == AV_SAMPLE_FMT_NONE)
471
                frame->format = avctx->sample_fmt;
472
322082
            if (!frame->channel_layout)
473
1316
                frame->channel_layout = avctx->channel_layout;
474
322082
            if (!frame->channels)
475
                frame->channels = avctx->channels;
476
322082
            if (!frame->sample_rate)
477
2
                frame->sample_rate = avctx->sample_rate;
478
        }
479
480
323485
        side= av_packet_get_side_data(avci->last_pkt_props, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
481

323485
        if(side && side_size>=10) {
482
92
            avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
483
92
            discard_padding = AV_RL32(side + 4);
484
92
            av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
485
                   avci->skip_samples, (int)discard_padding);
486
92
            skip_reason = AV_RL8(side + 8);
487
92
            discard_reason = AV_RL8(side + 9);
488
        }
489
490

323485
        if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
491
15
            !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
492
15
            avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples);
493
15
            got_frame = 0;
494
        }
495
496

323485
        if (avci->skip_samples > 0 && got_frame &&
497
143
            !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
498
143
            if(frame->nb_samples <= avci->skip_samples){
499
101
                got_frame = 0;
500
101
                avci->skip_samples -= frame->nb_samples;
501
101
                av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
502
                       avci->skip_samples);
503
            } else {
504
42
                av_samples_copy(frame->extended_data, frame->extended_data, 0, avci->skip_samples,
505
42
                                frame->nb_samples - avci->skip_samples, avctx->channels, frame->format);
506

84
                if(avctx->pkt_timebase.num && avctx->sample_rate) {
507
42
                    int64_t diff_ts = av_rescale_q(avci->skip_samples,
508
42
                                                   (AVRational){1, avctx->sample_rate},
509
                                                   avctx->pkt_timebase);
510
42
                    if(frame->pts!=AV_NOPTS_VALUE)
511
42
                        frame->pts += diff_ts;
512
#if FF_API_PKT_PTS
513
FF_DISABLE_DEPRECATION_WARNINGS
514
42
                    if(frame->pkt_pts!=AV_NOPTS_VALUE)
515
42
                        frame->pkt_pts += diff_ts;
516
FF_ENABLE_DEPRECATION_WARNINGS
517
#endif
518
42
                    if(frame->pkt_dts!=AV_NOPTS_VALUE)
519
42
                        frame->pkt_dts += diff_ts;
520
42
                    if (frame->pkt_duration >= diff_ts)
521
42
                        frame->pkt_duration -= diff_ts;
522
                } else {
523
                    av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
524
                }
525
42
                av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
526
                       avci->skip_samples, frame->nb_samples);
527
42
                frame->nb_samples -= avci->skip_samples;
528
42
                avci->skip_samples = 0;
529
            }
530
        }
531
532

323485
        if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
533
5
            !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
534
5
            if (discard_padding == frame->nb_samples) {
535
2
                got_frame = 0;
536
            } else {
537

3
                if(avctx->pkt_timebase.num && avctx->sample_rate) {
538
3
                    int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
539
3
                                                   (AVRational){1, avctx->sample_rate},
540
                                                   avctx->pkt_timebase);
541
3
                    frame->pkt_duration = diff_ts;
542
                } else {
543
                    av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
544
                }
545
3
                av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
546
                       (int)discard_padding, frame->nb_samples);
547
3
                frame->nb_samples -= discard_padding;
548
            }
549
        }
550
551

323485
        if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
552
            AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
553
            if (fside) {
554
                AV_WL32(fside->data, avci->skip_samples);
555
                AV_WL32(fside->data + 4, discard_padding);
556
                AV_WL8(fside->data + 8, skip_reason);
557
                AV_WL8(fside->data + 9, discard_reason);
558
                avci->skip_samples = 0;
559
            }
560
        }
561
    }
562
563
437785
    if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
564

323485
        !avci->showed_multi_packet_warning &&
565

298607
        ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
566
11
        av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
567
11
        avci->showed_multi_packet_warning = 1;
568
    }
569
570
437785
    if (!got_frame)
571
9029
        av_frame_unref(frame);
572
573

437785
    if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
574
113607
        ret = pkt->size;
575
576
#if FF_API_AVCTX_TIMEBASE
577

437785
    if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
578
84706
        avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
579
#endif
580
581
    /* do not stop draining when actual_got_frame != 0 or ret < 0 */
582
    /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
583

437785
    if (avci->draining && !actual_got_frame) {
584
660
        if (ret < 0) {
585
            /* prevent infinite loop if a decoder wrongly always return error on draining */
586
            /* reasonable nb_errors_max = maximum b frames + thread count */
587
1
            int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
588
                                avctx->thread_count : 1);
589
590
1
            if (avci->nb_draining_errors++ >= nb_errors_max) {
591
                av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
592
                       "Stop draining and force EOF.\n");
593
                avci->draining_done = 1;
594
                ret = AVERROR_BUG;
595
            }
596
        } else {
597
659
            avci->draining_done = 1;
598
        }
599
    }
600
601
437785
    avci->compat_decode_consumed += ret;
602
603

437785
    if (ret >= pkt->size || ret < 0) {
604
409550
        av_packet_unref(pkt);
605
    } else {
606
28235
        int consumed = ret;
607
608
28235
        pkt->data                += consumed;
609
28235
        pkt->size                -= consumed;
610
28235
        avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
611
28235
        pkt->pts                  = AV_NOPTS_VALUE;
612
28235
        pkt->dts                  = AV_NOPTS_VALUE;
613
28235
        avci->last_pkt_props->pts = AV_NOPTS_VALUE;
614
28235
        avci->last_pkt_props->dts = AV_NOPTS_VALUE;
615
    }
616
617
437785
    if (got_frame)
618
428756
        av_assert0(frame->buf[0]);
619
620
437785
    return ret < 0 ? ret : 0;
621
}
622
623
849051
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
624
{
625
    int ret;
626
627
1286179
    while (!frame->buf[0]) {
628
857423
        ret = decode_simple_internal(avctx, frame);
629
857423
        if (ret < 0)
630
420295
            return ret;
631
    }
632
633
428756
    return 0;
634
}
635
636
849319
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
637
{
638
849319
    AVCodecInternal *avci = avctx->internal;
639
    int ret;
640
641
849319
    av_assert0(!frame->buf[0]);
642
643
849319
    if (avctx->codec->receive_frame)
644
268
        ret = avctx->codec->receive_frame(avctx, frame);
645
    else
646
849051
        ret = decode_simple_receive_frame(avctx, frame);
647
648
849319
    if (ret == AVERROR_EOF)
649
11121
        avci->draining_done = 1;
650
651
849319
    if (!ret) {
652
        /* the only case where decode data is not set should be decoders
653
         * that do not call ff_get_buffer() */
654

428928
        av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) ||
655
                   !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
656
657
428928
        if (frame->private_ref) {
658
407541
            FrameDecodeData *fdd = (FrameDecodeData*)frame->private_ref->data;
659
660
407541
            if (fdd->post_process) {
661
                ret = fdd->post_process(avctx, frame);
662
                if (ret < 0) {
663
                    av_frame_unref(frame);
664
                    return ret;
665
                }
666
            }
667
        }
668
    }
669
670
    /* free the per-frame decode data */
671
849319
    av_buffer_unref(&frame->private_ref);
672
673
849319
    return ret;
674
}
675
676
414654
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
677
{
678
414654
    AVCodecInternal *avci = avctx->internal;
679
    int ret;
680
681

414654
    if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
682
        return AVERROR(EINVAL);
683
684
414654
    if (avctx->internal->draining)
685
723
        return AVERROR_EOF;
686
687

413931
    if (avpkt && !avpkt->size && avpkt->data)
688
        return AVERROR(EINVAL);
689
690
413931
    av_packet_unref(avci->buffer_pkt);
691

413931
    if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
692
408184
        ret = av_packet_ref(avci->buffer_pkt, avpkt);
693
408184
        if (ret < 0)
694
            return ret;
695
    }
696
697
413931
    ret = av_bsf_send_packet(avci->filter.bsfs[0], avci->buffer_pkt);
698
413931
    if (ret < 0) {
699
        av_packet_unref(avci->buffer_pkt);
700
        return ret;
701
    }
702
703
413931
    if (!avci->buffer_frame->buf[0]) {
704
413931
        ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
705

413931
        if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
706
652
            return ret;
707
    }
708
709
413279
    return 0;
710
}
711
712
106792
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
713
{
714
    /* make sure we are noisy about decoders returning invalid cropping data */
715
106792
    if (frame->crop_left >= INT_MAX - frame->crop_right        ||
716
106792
        frame->crop_top  >= INT_MAX - frame->crop_bottom       ||
717
106792
        (frame->crop_left + frame->crop_right) >= frame->width ||
718
106792
        (frame->crop_top + frame->crop_bottom) >= frame->height) {
719
        av_log(avctx, AV_LOG_WARNING,
720
               "Invalid cropping information set by a decoder: "
721
               "%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER" "
722
               "(frame size %dx%d). This is a bug, please report it\n",
723
               frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
724
               frame->width, frame->height);
725
        frame->crop_left   = 0;
726
        frame->crop_right  = 0;
727
        frame->crop_top    = 0;
728
        frame->crop_bottom = 0;
729
        return 0;
730
    }
731
732
106792
    if (!avctx->apply_cropping)
733
        return 0;
734
735
106792
    return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
736
                                          AV_FRAME_CROP_UNALIGNED : 0);
737
}
738
739
836891
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
740
{
741
836891
    AVCodecInternal *avci = avctx->internal;
742
    int ret, changed;
743
744
836891
    av_frame_unref(frame);
745
746

836891
    if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
747
        return AVERROR(EINVAL);
748
749
836891
    if (avci->buffer_frame->buf[0]) {
750
401503
        av_frame_move_ref(frame, avci->buffer_frame);
751
    } else {
752
435388
        ret = decode_receive_frame_internal(avctx, frame);
753
435388
        if (ret < 0)
754
407963
            return ret;
755
    }
756
757
428928
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
758
106792
        ret = apply_cropping(avctx, frame);
759
106792
        if (ret < 0) {
760
            av_frame_unref(frame);
761
            return ret;
762
        }
763
    }
764
765
428928
    avctx->frame_number++;
766
767
428928
    if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
768
769
        if (avctx->frame_number == 1) {
770
            avci->initial_format = frame->format;
771
            switch(avctx->codec_type) {
772
            case AVMEDIA_TYPE_VIDEO:
773
                avci->initial_width  = frame->width;
774
                avci->initial_height = frame->height;
775
                break;
776
            case AVMEDIA_TYPE_AUDIO:
777
                avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate :
778
                                                                 avctx->sample_rate;
779
                avci->initial_channels       = frame->channels;
780
                avci->initial_channel_layout = frame->channel_layout;
781
                break;
782
            }
783
        }
784
785
        if (avctx->frame_number > 1) {
786
            changed = avci->initial_format != frame->format;
787
788
            switch(avctx->codec_type) {
789
            case AVMEDIA_TYPE_VIDEO:
790
                changed |= avci->initial_width  != frame->width ||
791
                           avci->initial_height != frame->height;
792
                break;
793
            case AVMEDIA_TYPE_AUDIO:
794
                changed |= avci->initial_sample_rate    != frame->sample_rate ||
795
                           avci->initial_sample_rate    != avctx->sample_rate ||
796
                           avci->initial_channels       != frame->channels ||
797
                           avci->initial_channel_layout != frame->channel_layout;
798
                break;
799
            }
800
801
            if (changed) {
802
                avci->changed_frames_dropped++;
803
                av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
804
                                            " drop count: %d \n",
805
                                            avctx->frame_number, frame->pts,
806
                                            avci->changed_frames_dropped);
807
                av_frame_unref(frame);
808
                return AVERROR_INPUT_CHANGED;
809
            }
810
        }
811
    }
812
428928
    return 0;
813
}
814
815
5731
static int compat_decode(AVCodecContext *avctx, AVFrame *frame,
816
                         int *got_frame, const AVPacket *pkt)
817
{
818
5731
    AVCodecInternal *avci = avctx->internal;
819
5731
    int ret = 0;
820
821
5731
    av_assert0(avci->compat_decode_consumed == 0);
822
823

5731
    if (avci->draining_done && pkt && pkt->size != 0) {
824
        av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
825
        avcodec_flush_buffers(avctx);
826
    }
827
828
5731
    *got_frame = 0;
829
5731
    avci->compat_decode = 1;
830
831
5731
    if (avci->compat_decode_partial_size > 0 &&
832
        avci->compat_decode_partial_size != pkt->size) {
833
        av_log(avctx, AV_LOG_ERROR,
834
               "Got unexpected packet size after a partial decode\n");
835
        ret = AVERROR(EINVAL);
836
        goto finish;
837
    }
838
839
5731
    if (!avci->compat_decode_partial_size) {
840
5731
        ret = avcodec_send_packet(avctx, pkt);
841
5731
        if (ret == AVERROR_EOF)
842
48
            ret = 0;
843
5683
        else if (ret == AVERROR(EAGAIN)) {
844
            /* we fully drain all the output in each decode call, so this should not
845
             * ever happen */
846
            ret = AVERROR_BUG;
847
            goto finish;
848
5683
        } else if (ret < 0)
849
            goto finish;
850
    }
851
852
11345
    while (ret >= 0) {
853
11345
        ret = avcodec_receive_frame(avctx, frame);
854
11345
        if (ret < 0) {
855

5683
            if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
856
5683
                ret = 0;
857
5683
            goto finish;
858
        }
859
860
5662
        if (frame != avci->compat_decode_frame) {
861
5662
            if (!avctx->refcounted_frames) {
862
3522
                ret = unrefcount_frame(avci, frame);
863
3522
                if (ret < 0)
864
                    goto finish;
865
            }
866
867
5662
            *got_frame = 1;
868
5662
            frame = avci->compat_decode_frame;
869
        } else {
870
            if (!avci->compat_decode_warned) {
871
                av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
872
                       "API cannot return all the frames for this decoder. "
873
                       "Some frames will be dropped. Update your code to the "
874
                       "new decoding API to fix this.\n");
875
                avci->compat_decode_warned = 1;
876
            }
877
        }
878
879

5662
        if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
880
            break;
881
    }
882
883
48
finish:
884
5731
    if (ret == 0) {
885
        /* if there are any bsfs then assume full packet is always consumed */
886
5731
        if (avctx->codec->bsfs)
887
            ret = pkt->size;
888
        else
889
5731
            ret = FFMIN(avci->compat_decode_consumed, pkt->size);
890
    }
891
5731
    avci->compat_decode_consumed = 0;
892
5731
    avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
893
894
5731
    return ret;
895
}
896
897
2189
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
898
                                              int *got_picture_ptr,
899
                                              const AVPacket *avpkt)
900
{
901
2189
    return compat_decode(avctx, picture, got_picture_ptr, avpkt);
902
}
903
904
3542
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
905
                                              AVFrame *frame,
906
                                              int *got_frame_ptr,
907
                                              const AVPacket *avpkt)
908
{
909
3542
    return compat_decode(avctx, frame, got_frame_ptr, avpkt);
910
}
911
912
1226
static void get_subtitle_defaults(AVSubtitle *sub)
913
{
914
1226
    memset(sub, 0, sizeof(*sub));
915
1226
    sub->pts = AV_NOPTS_VALUE;
916
1226
}
917
918
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
919
1193
static int recode_subtitle(AVCodecContext *avctx,
920
                           AVPacket *outpkt, const AVPacket *inpkt)
921
{
922
#if CONFIG_ICONV
923
1193
    iconv_t cd = (iconv_t)-1;
924
1193
    int ret = 0;
925
    char *inb, *outb;
926
    size_t inl, outl;
927
    AVPacket tmp;
928
#endif
929
930

1193
    if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
931
1100
        return 0;
932
933
#if CONFIG_ICONV
934
93
    cd = iconv_open("UTF-8", avctx->sub_charenc);
935
93
    av_assert0(cd != (iconv_t)-1);
936
937
93
    inb = inpkt->data;
938
93
    inl = inpkt->size;
939
940
93
    if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
941
        av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
942
        ret = AVERROR(ENOMEM);
943
        goto end;
944
    }
945
946
93
    ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
947
93
    if (ret < 0)
948
        goto end;
949
93
    outpkt->buf  = tmp.buf;
950
93
    outpkt->data = tmp.data;
951
93
    outpkt->size = tmp.size;
952
93
    outb = outpkt->data;
953
93
    outl = outpkt->size;
954
955

186
    if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
956
93
        iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
957

93
        outl >= outpkt->size || inl != 0) {
958
        ret = FFMIN(AVERROR(errno), -1);
959
        av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
960
               "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
961
        av_packet_unref(&tmp);
962
        goto end;
963
    }
964
93
    outpkt->size -= outl;
965
93
    memset(outpkt->data + outpkt->size, 0, outl);
966
967
93
end:
968
93
    if (cd != (iconv_t)-1)
969
93
        iconv_close(cd);
970
93
    return ret;
971
#else
972
    av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
973
    return AVERROR(EINVAL);
974
#endif
975
}
976
977
552
static int utf8_check(const uint8_t *str)
978
{
979
    const uint8_t *byte;
980
    uint32_t codepoint, min;
981
982
46245
    while (*str) {
983
45693
        byte = str;
984


48466
        GET_UTF8(codepoint, *(byte++), return 0;);
985

46389
        min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
986
696
              1 << (5 * (byte - str) - 4);
987

45693
        if (codepoint < min || codepoint >= 0x110000 ||
988
45693
            codepoint == 0xFFFE /* BOM */ ||
989
            codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
990
            return 0;
991
45693
        str = byte;
992
    }
993
552
    return 1;
994
}
995
996
#if FF_API_ASS_TIMING
997
static void insert_ts(AVBPrint *buf, int ts)
998
{
999
    if (ts == -1) {
1000
        av_bprintf(buf, "9:59:59.99,");
1001
    } else {
1002
        int h, m, s;
1003
1004
        h = ts/360000;  ts -= 360000*h;
1005
        m = ts/  6000;  ts -=   6000*m;
1006
        s = ts/   100;  ts -=    100*s;
1007
        av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
1008
    }
1009
}
1010
1011
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
1012
{
1013
    int i;
1014
    AVBPrint buf;
1015
1016
    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
1017
1018
    for (i = 0; i < sub->num_rects; i++) {
1019
        char *final_dialog;
1020
        const char *dialog;
1021
        AVSubtitleRect *rect = sub->rects[i];
1022
        int ts_start, ts_duration = -1;
1023
        long int layer;
1024
1025
        if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
1026
            continue;
1027
1028
        av_bprint_clear(&buf);
1029
1030
        /* skip ReadOrder */
1031
        dialog = strchr(rect->ass, ',');
1032
        if (!dialog)
1033
            continue;
1034
        dialog++;
1035
1036
        /* extract Layer or Marked */
1037
        layer = strtol(dialog, (char**)&dialog, 10);
1038
        if (*dialog != ',')
1039
            continue;
1040
        dialog++;
1041
1042
        /* rescale timing to ASS time base (ms) */
1043
        ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
1044
        if (pkt->duration != -1)
1045
            ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
1046
        sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
1047
1048
        /* construct ASS (standalone file form with timestamps) string */
1049
        av_bprintf(&buf, "Dialogue: %ld,", layer);
1050
        insert_ts(&buf, ts_start);
1051
        insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
1052
        av_bprintf(&buf, "%s\r\n", dialog);
1053
1054
        final_dialog = av_strdup(buf.str);
1055
        if (!av_bprint_is_complete(&buf) || !final_dialog) {
1056
            av_freep(&final_dialog);
1057
            av_bprint_finalize(&buf, NULL);
1058
            return AVERROR(ENOMEM);
1059
        }
1060
        av_freep(&rect->ass);
1061
        rect->ass = final_dialog;
1062
    }
1063
1064
    av_bprint_finalize(&buf, NULL);
1065
    return 0;
1066
}
1067
#endif
1068
1069
1226
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1070
                             int *got_sub_ptr,
1071
                             AVPacket *avpkt)
1072
{
1073
1226
    int i, ret = 0;
1074
1075

1226
    if (!avpkt->data && avpkt->size) {
1076
        av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1077
        return AVERROR(EINVAL);
1078
    }
1079
1226
    if (!avctx->codec)
1080
        return AVERROR(EINVAL);
1081
1226
    if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1082
        av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1083
        return AVERROR(EINVAL);
1084
    }
1085
1086
1226
    *got_sub_ptr = 0;
1087
1226
    get_subtitle_defaults(sub);
1088
1089

1226
    if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1090
1193
        AVPacket pkt_recoded = *avpkt;
1091
1092
1193
        ret = recode_subtitle(avctx, &pkt_recoded, avpkt);
1093
1193
        if (ret < 0) {
1094
            *got_sub_ptr = 0;
1095
        } else {
1096
1193
             ret = extract_packet_props(avctx->internal, &pkt_recoded);
1097
1193
             if (ret < 0)
1098
                return ret;
1099
1100

1193
            if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1101
1191
                sub->pts = av_rescale_q(avpkt->pts,
1102
1191
                                        avctx->pkt_timebase, AV_TIME_BASE_Q);
1103
1193
            ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
1104
            av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1105
                       !!*got_sub_ptr >= !!sub->num_rects);
1106
1107
#if FF_API_ASS_TIMING
1108
1193
            if (avctx->sub_text_format == FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
1109

1
                && *got_sub_ptr && sub->num_rects) {
1110
                const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1111
                                                              : avctx->time_base;
1112
                int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1113
                if (err < 0)
1114
                    ret = err;
1115
            }
1116
#endif
1117
1118

1193
            if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1119
380
                avctx->pkt_timebase.num) {
1120
380
                AVRational ms = { 1, 1000 };
1121
380
                sub->end_display_time = av_rescale_q(avpkt->duration,
1122
                                                     avctx->pkt_timebase, ms);
1123
            }
1124
1125
1193
            if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
1126
104
                sub->format = 0;
1127
1089
            else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1128
1089
                sub->format = 1;
1129
1130
1834
            for (i = 0; i < sub->num_rects; i++) {
1131
641
                if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_IGNORE &&
1132

641
                    sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1133
                    av_log(avctx, AV_LOG_ERROR,
1134
                           "Invalid UTF-8 in decoded subtitles text; "
1135
                           "maybe missing -sub_charenc option\n");
1136
                    avsubtitle_free(sub);
1137
                    ret = AVERROR_INVALIDDATA;
1138
                    break;
1139
                }
1140
            }
1141
1142
1193
            if (avpkt->data != pkt_recoded.data) { // did we recode?
1143
                /* prevent from destroying side data from original packet */
1144
93
                pkt_recoded.side_data = NULL;
1145
93
                pkt_recoded.side_data_elems = 0;
1146
1147
93
                av_packet_unref(&pkt_recoded);
1148
            }
1149
        }
1150
1151
1193
        if (*got_sub_ptr)
1152
640
            avctx->frame_number++;
1153
    }
1154
1155
1226
    return ret;
1156
}
1157
1158
1368
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx,
1159
                                              const enum AVPixelFormat *fmt)
1160
{
1161
    const AVPixFmtDescriptor *desc;
1162
    const AVCodecHWConfig *config;
1163
    int i, n;
1164
1165
    // If a device was supplied when the codec was opened, assume that the
1166
    // user wants to use it.
1167

1368
    if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1168
        AVHWDeviceContext *device_ctx =
1169
            (AVHWDeviceContext*)avctx->hw_device_ctx->data;
1170
        for (i = 0;; i++) {
1171
            config = &avctx->codec->hw_configs[i]->public;
1172
            if (!config)
1173
                break;
1174
            if (!(config->methods &
1175
                  AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX))
1176
                continue;
1177
            if (device_ctx->type != config->device_type)
1178
                continue;
1179
            for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1180
                if (config->pix_fmt == fmt[n])
1181
                    return fmt[n];
1182
            }
1183
        }
1184
    }
1185
    // No device or other setup, so we have to choose from things which
1186
    // don't any other external information.
1187
1188
    // If the last element of the list is a software format, choose it
1189
    // (this should be best software format if any exist).
1190
4868
    for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1191
1368
    desc = av_pix_fmt_desc_get(fmt[n - 1]);
1192
1368
    if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1193
1368
        return fmt[n - 1];
1194
1195
    // Finally, traverse the list in order and choose the first entry
1196
    // with no external dependencies (if there is no hardware configuration
1197
    // information available then this just picks the first entry).
1198
    for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1199
        for (i = 0;; i++) {
1200
            config = avcodec_get_hw_config(avctx->codec, i);
1201
            if (!config)
1202
                break;
1203
            if (config->pix_fmt == fmt[n])
1204
                break;
1205
        }
1206
        if (!config) {
1207
            // No specific config available, so the decoder must be able
1208
            // to handle this format without any additional setup.
1209
            return fmt[n];
1210
        }
1211
        if (config->methods & AV_CODEC_HW_CONFIG_METHOD_INTERNAL) {
1212
            // Usable with only internal setup.
1213
            return fmt[n];
1214
        }
1215
    }
1216
1217
    // Nothing is usable, give up.
1218
    return AV_PIX_FMT_NONE;
1219
}
1220
1221
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx,
1222
                                enum AVHWDeviceType dev_type)
1223
{
1224
    AVHWDeviceContext *device_ctx;
1225
    AVHWFramesContext *frames_ctx;
1226
    int ret;
1227
1228
    if (!avctx->hwaccel)
1229
        return AVERROR(ENOSYS);
1230
1231
    if (avctx->hw_frames_ctx)
1232
        return 0;
1233
    if (!avctx->hw_device_ctx) {
1234
        av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1235
                "required for hardware accelerated decoding.\n");
1236
        return AVERROR(EINVAL);
1237
    }
1238
1239
    device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1240
    if (device_ctx->type != dev_type) {
1241
        av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1242
               "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1243
               av_hwdevice_get_type_name(device_ctx->type));
1244
        return AVERROR(EINVAL);
1245
    }
1246
1247
    ret = avcodec_get_hw_frames_parameters(avctx,
1248
                                           avctx->hw_device_ctx,
1249
                                           avctx->hwaccel->pix_fmt,
1250
                                           &avctx->hw_frames_ctx);
1251
    if (ret < 0)
1252
        return ret;
1253
1254
    frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1255
1256
1257
    if (frames_ctx->initial_pool_size) {
1258
        // We guarantee 4 base work surfaces. The function above guarantees 1
1259
        // (the absolute minimum), so add the missing count.
1260
        frames_ctx->initial_pool_size += 3;
1261
    }
1262
1263
    ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1264
    if (ret < 0) {
1265
        av_buffer_unref(&avctx->hw_frames_ctx);
1266
        return ret;
1267
    }
1268
1269
    return 0;
1270
}
1271
1272
int avcodec_get_hw_frames_parameters(AVCodecContext *avctx,
1273
                                     AVBufferRef *device_ref,
1274
                                     enum AVPixelFormat hw_pix_fmt,
1275
                                     AVBufferRef **out_frames_ref)
1276
{
1277
    AVBufferRef *frames_ref = NULL;
1278
    const AVCodecHWConfigInternal *hw_config;
1279
    const AVHWAccel *hwa;
1280
    int i, ret;
1281
1282
    for (i = 0;; i++) {
1283
        hw_config = avctx->codec->hw_configs[i];
1284
        if (!hw_config)
1285
            return AVERROR(ENOENT);
1286
        if (hw_config->public.pix_fmt == hw_pix_fmt)
1287
            break;
1288
    }
1289
1290
    hwa = hw_config->hwaccel;
1291
    if (!hwa || !hwa->frame_params)
1292
        return AVERROR(ENOENT);
1293
1294
    frames_ref = av_hwframe_ctx_alloc(device_ref);
1295
    if (!frames_ref)
1296
        return AVERROR(ENOMEM);
1297
1298
    ret = hwa->frame_params(avctx, frames_ref);
1299
    if (ret >= 0) {
1300
        AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1301
1302
        if (frames_ctx->initial_pool_size) {
1303
            // If the user has requested that extra output surfaces be
1304
            // available then add them here.
1305
            if (avctx->extra_hw_frames > 0)
1306
                frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1307
1308
            // If frame threading is enabled then an extra surface per thread
1309
            // is also required.
1310
            if (avctx->active_thread_type & FF_THREAD_FRAME)
1311
                frames_ctx->initial_pool_size += avctx->thread_count;
1312
        }
1313
1314
        *out_frames_ref = frames_ref;
1315
    } else {
1316
        av_buffer_unref(&frames_ref);
1317
    }
1318
    return ret;
1319
}
1320
1321
static int hwaccel_init(AVCodecContext *avctx,
1322
                        const AVCodecHWConfigInternal *hw_config)
1323
{
1324
    const AVHWAccel *hwaccel;
1325
    int err;
1326
1327
    hwaccel = hw_config->hwaccel;
1328
    if (hwaccel->capabilities & AV_HWACCEL_CODEC_CAP_EXPERIMENTAL &&
1329
        avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1330
        av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1331
               hwaccel->name);
1332
        return AVERROR_PATCHWELCOME;
1333
    }
1334
1335
    if (hwaccel->priv_data_size) {
1336
        avctx->internal->hwaccel_priv_data =
1337
            av_mallocz(hwaccel->priv_data_size);
1338
        if (!avctx->internal->hwaccel_priv_data)
1339
            return AVERROR(ENOMEM);
1340
    }
1341
1342
    avctx->hwaccel = hwaccel;
1343
    if (hwaccel->init) {
1344
        err = hwaccel->init(avctx);
1345
        if (err < 0) {
1346
            av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1347
                   "hwaccel initialisation returned error.\n",
1348
                   av_get_pix_fmt_name(hw_config->public.pix_fmt));
1349
            av_freep(&avctx->internal->hwaccel_priv_data);
1350
            avctx->hwaccel = NULL;
1351
            return err;
1352
        }
1353
    }
1354
1355
    return 0;
1356
}
1357
1358
2294
static void hwaccel_uninit(AVCodecContext *avctx)
1359
{
1360

2294
    if (avctx->hwaccel && avctx->hwaccel->uninit)
1361
        avctx->hwaccel->uninit(avctx);
1362
1363
2294
    av_freep(&avctx->internal->hwaccel_priv_data);
1364
1365
2294
    avctx->hwaccel = NULL;
1366
1367
2294
    av_buffer_unref(&avctx->hw_frames_ctx);
1368
2294
}
1369
1370
2294
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1371
{
1372
    const AVPixFmtDescriptor *desc;
1373
    enum AVPixelFormat *choices;
1374
    enum AVPixelFormat ret, user_choice;
1375
    const AVCodecHWConfigInternal *hw_config;
1376
    const AVCodecHWConfig *config;
1377
    int i, n, err;
1378
1379
    // Find end of list.
1380
8315
    for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1381
    // Must contain at least one entry.
1382
2294
    av_assert0(n >= 1);
1383
    // If a software format is available, it must be the last entry.
1384
2294
    desc = av_pix_fmt_desc_get(fmt[n - 1]);
1385
2294
    if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1386
        // No software format is available.
1387
    } else {
1388
2294
        avctx->sw_pix_fmt = fmt[n - 1];
1389
    }
1390
1391
2294
    choices = av_malloc_array(n + 1, sizeof(*choices));
1392
2294
    if (!choices)
1393
        return AV_PIX_FMT_NONE;
1394
1395
2294
    memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1396
1397
    for (;;) {
1398
        // Remove the previous hwaccel, if there was one.
1399
2294
        hwaccel_uninit(avctx);
1400
1401
2294
        user_choice = avctx->get_format(avctx, choices);
1402
2294
        if (user_choice == AV_PIX_FMT_NONE) {
1403
            // Explicitly chose nothing, give up.
1404
            ret = AV_PIX_FMT_NONE;
1405
            break;
1406
        }
1407
1408
2294
        desc = av_pix_fmt_desc_get(user_choice);
1409
2294
        if (!desc) {
1410
            av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1411
                   "get_format() callback.\n");
1412
            ret = AV_PIX_FMT_NONE;
1413
            break;
1414
        }
1415
2294
        av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1416
               desc->name);
1417
1418
6021
        for (i = 0; i < n; i++) {
1419
6021
            if (choices[i] == user_choice)
1420
2294
                break;
1421
        }
1422
2294
        if (i == n) {
1423
            av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1424
                   "%s not in possible list.\n", desc->name);
1425
            ret = AV_PIX_FMT_NONE;
1426
            break;
1427
        }
1428
1429
2294
        if (avctx->codec->hw_configs) {
1430
6176
            for (i = 0;; i++) {
1431
6176
                hw_config = avctx->codec->hw_configs[i];
1432
6176
                if (!hw_config)
1433
2191
                    break;
1434
3985
                if (hw_config->public.pix_fmt == user_choice)
1435
                    break;
1436
            }
1437
        } else {
1438
103
            hw_config = NULL;
1439
        }
1440
1441
2294
        if (!hw_config) {
1442
            // No config available, so no extra setup required.
1443
2294
            ret = user_choice;
1444
2294
            break;
1445
        }
1446
        config = &hw_config->public;
1447
1448
        if (config->methods &
1449
            AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX &&
1450
            avctx->hw_frames_ctx) {
1451
            const AVHWFramesContext *frames_ctx =
1452
                (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1453
            if (frames_ctx->format != user_choice) {
1454
                av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1455
                       "does not match the format of the provided frames "
1456
                       "context.\n", desc->name);
1457
                goto try_again;
1458
            }
1459
        } else if (config->methods &
1460
                   AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX &&
1461
                   avctx->hw_device_ctx) {
1462
            const AVHWDeviceContext *device_ctx =
1463
                (AVHWDeviceContext*)avctx->hw_device_ctx->data;
1464
            if (device_ctx->type != config->device_type) {
1465
                av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1466
                       "does not match the type of the provided device "
1467
                       "context.\n", desc->name);
1468
                goto try_again;
1469
            }
1470
        } else if (config->methods &
1471
                   AV_CODEC_HW_CONFIG_METHOD_INTERNAL) {
1472
            // Internal-only setup, no additional configuration.
1473
        } else if (config->methods &
1474
                   AV_CODEC_HW_CONFIG_METHOD_AD_HOC) {
1475
            // Some ad-hoc configuration we can't see and can't check.
1476
        } else {
1477
            av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1478
                   "missing configuration.\n", desc->name);
1479
            goto try_again;
1480
        }
1481
        if (hw_config->hwaccel) {
1482
            av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1483
                   "initialisation.\n", desc->name);
1484
            err = hwaccel_init(avctx, hw_config);
1485
            if (err < 0)
1486
                goto try_again;
1487
        }
1488
        ret = user_choice;
1489
        break;
1490
1491
    try_again:
1492
        av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1493
               "get_format() without it.\n", desc->name);
1494
        for (i = 0; i < n; i++) {
1495
            if (choices[i] == user_choice)
1496
                break;
1497
        }
1498
        for (; i + 1 < n; i++)
1499
            choices[i] = choices[i + 1];
1500
        --n;
1501
    }
1502
1503
2294
    av_freep(&choices);
1504
2294
    return ret;
1505
}
1506
1507
413244
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
1508
{
1509
413244
    FramePool *pool = avctx->internal->pool;
1510
    int i, ret;
1511
1512
413244
    switch (avctx->codec_type) {
1513
90926
    case AVMEDIA_TYPE_VIDEO: {
1514
        uint8_t *data[4];
1515
        int linesize[4];
1516
90926
        int size[4] = { 0 };
1517
90926
        int w = frame->width;
1518
90926
        int h = frame->height;
1519
        int tmpsize, unaligned;
1520
1521
90926
        if (pool->format == frame->format &&
1522

89130
            pool->width == frame->width && pool->height == frame->height)
1523
82621
            return 0;
1524
1525
8305
        avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1526
1527
        do {
1528
            // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1529
            // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1530
16694
            ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1531
16694
            if (ret < 0)
1532
                return ret;
1533
            // increase alignment of w for next try (rhs gives the lowest bit set in w)
1534
16694
            w += w & ~(w - 1);
1535
1536
16694
            unaligned = 0;
1537
83470
            for (i = 0; i < 4; i++)
1538
66776
                unaligned |= linesize[i] % pool->stride_align[i];
1539
16694
        } while (unaligned);
1540
1541
8305
        tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
1542
                                         NULL, linesize);
1543
8305
        if (tmpsize < 0)
1544
            return tmpsize;
1545
1546

23297
        for (i = 0; i < 3 && data[i + 1]; i++)
1547
14992
            size[i] = data[i + 1] - data[i];
1548
8305
        size[i] = tmpsize - (data[i] - data[0]);
1549
1550
41525
        for (i = 0; i < 4; i++) {
1551
33220
            av_buffer_pool_uninit(&pool->pools[i]);
1552
33220
            pool->linesize[i] = linesize[i];
1553
33220
            if (size[i]) {
1554
23297
                pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1555
                                                     CONFIG_MEMORY_POISONING ?
1556
                                                        NULL :
1557
                                                        av_buffer_allocz);
1558
23297
                if (!pool->pools[i]) {
1559
                    ret = AVERROR(ENOMEM);
1560
                    goto fail;
1561
                }
1562
            }
1563
        }
1564
8305
        pool->format = frame->format;
1565
8305
        pool->width  = frame->width;
1566
8305
        pool->height = frame->height;
1567
1568
8305
        break;
1569
        }
1570
322318
    case AVMEDIA_TYPE_AUDIO: {
1571
322318
        int ch     = frame->channels; //av_get_channel_layout_nb_channels(frame->channel_layout);
1572
322318
        int planar = av_sample_fmt_is_planar(frame->format);
1573
322318
        int planes = planar ? ch : 1;
1574
1575

322318
        if (pool->format == frame->format && pool->planes == planes &&
1576

320845
            pool->channels == ch && frame->nb_samples == pool->samples)
1577
314504
            return 0;
1578
1579
7814
        av_buffer_pool_uninit(&pool->pools[0]);
1580
7814
        ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1581
7814
                                         frame->nb_samples, frame->format, 0);
1582
7814
        if (ret < 0)
1583
            goto fail;
1584
1585
7814
        pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1586
7814
        if (!pool->pools[0]) {
1587
            ret = AVERROR(ENOMEM);
1588
            goto fail;
1589
        }
1590
1591
7814
        pool->format     = frame->format;
1592
7814
        pool->planes     = planes;
1593
7814
        pool->channels   = ch;
1594
7814
        pool->samples = frame->nb_samples;
1595
7814
        break;
1596
        }
1597
    default: av_assert0(0);
1598
    }
1599
16119
    return 0;
1600
fail:
1601
    for (i = 0; i < 4; i++)
1602
        av_buffer_pool_uninit(&pool->pools[i]);
1603
    pool->format = -1;
1604
    pool->planes = pool->channels = pool->samples = 0;
1605
    pool->width  = pool->height = 0;
1606
    return ret;
1607
}
1608
1609
322318
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
1610
{
1611
322318
    FramePool *pool = avctx->internal->pool;
1612
322318
    int planes = pool->planes;
1613
    int i;
1614
1615
322318
    frame->linesize[0] = pool->linesize[0];
1616
1617
322318
    if (planes > AV_NUM_DATA_POINTERS) {
1618
        frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
1619
        frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
1620
        frame->extended_buf  = av_mallocz_array(frame->nb_extended_buf,
1621
                                          sizeof(*frame->extended_buf));
1622
        if (!frame->extended_data || !frame->extended_buf) {
1623
            av_freep(&frame->extended_data);
1624
            av_freep(&frame->extended_buf);
1625
            return AVERROR(ENOMEM);
1626
        }
1627
    } else {
1628
322318
        frame->extended_data = frame->data;
1629
322318
        av_assert0(frame->nb_extended_buf == 0);
1630
    }
1631
1632
810361
    for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1633
488043
        frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1634
488043
        if (!frame->buf[i])
1635
            goto fail;
1636
488043
        frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1637
    }
1638
322318
    for (i = 0; i < frame->nb_extended_buf; i++) {
1639
        frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
1640
        if (!frame->extended_buf[i])
1641
            goto fail;
1642
        frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
1643
    }
1644
1645
322318
    if (avctx->debug & FF_DEBUG_BUFFERS)
1646
        av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1647
1648
322318
    return 0;
1649
fail:
1650
    av_frame_unref(frame);
1651
    return AVERROR(ENOMEM);
1652
}
1653
1654
90926
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
1655
{
1656
90926
    FramePool *pool = s->internal->pool;
1657
90926
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
1658
    int i;
1659
1660


90926
    if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1661
        av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1662
        return -1;
1663
    }
1664
1665
90926
    if (!desc) {
1666
        av_log(s, AV_LOG_ERROR,
1667
            "Unable to get pixel format descriptor for format %s\n",
1668
            av_get_pix_fmt_name(pic->format));
1669
        return AVERROR(EINVAL);
1670
    }
1671
1672
90926
    memset(pic->data, 0, sizeof(pic->data));
1673
90926
    pic->extended_data = pic->data;
1674
1675

351038
    for (i = 0; i < 4 && pool->pools[i]; i++) {
1676
260112
        pic->linesize[i] = pool->linesize[i];
1677
1678
260112
        pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1679
260112
        if (!pic->buf[i])
1680
            goto fail;
1681
1682
260112
        pic->data[i] = pic->buf[i]->data;
1683
    }
1684
558222
    for (; i < AV_NUM_DATA_POINTERS; i++) {
1685
467296
        pic->data[i] = NULL;
1686
467296
        pic->linesize[i] = 0;
1687
    }
1688
90926
    if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1689

88799
        ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1690
2403
        avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1691
1692
90926
    if (s->debug & FF_DEBUG_BUFFERS)
1693
        av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1694
1695
90926
    return 0;
1696
fail:
1697
    av_frame_unref(pic);
1698
    return AVERROR(ENOMEM);
1699
}
1700
1701
413244
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
1702
{
1703
    int ret;
1704
1705
413244
    if (avctx->hw_frames_ctx) {
1706
        ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1707
        frame->width  = avctx->coded_width;
1708
        frame->height = avctx->coded_height;
1709
        return ret;
1710
    }
1711
1712
413244
    if ((ret = update_frame_pool(avctx, frame)) < 0)
1713
        return ret;
1714
1715
413244
    switch (avctx->codec_type) {
1716
90926
    case AVMEDIA_TYPE_VIDEO:
1717
90926
        return video_get_buffer(avctx, frame);
1718
322318
    case AVMEDIA_TYPE_AUDIO:
1719
322318
        return audio_get_buffer(avctx, frame);
1720
    default:
1721
        return -1;
1722
    }
1723
}
1724
1725
439860
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
1726
{
1727
    int size;
1728
    const uint8_t *side_metadata;
1729
1730
439860
    AVDictionary **frame_md = &frame->metadata;
1731
1732
439860
    side_metadata = av_packet_get_side_data(avpkt,
1733
                                            AV_PKT_DATA_STRINGS_METADATA, &size);
1734
439860
    return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1735
}
1736
1737
439860
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
1738
{
1739
439860
    const AVPacket *pkt = avctx->internal->last_pkt_props;
1740
    int i;
1741
    static const struct {
1742
        enum AVPacketSideDataType packet;
1743
        enum AVFrameSideDataType frame;
1744
    } sd[] = {
1745
        { AV_PKT_DATA_REPLAYGAIN ,                AV_FRAME_DATA_REPLAYGAIN },
1746
        { AV_PKT_DATA_DISPLAYMATRIX,              AV_FRAME_DATA_DISPLAYMATRIX },
1747
        { AV_PKT_DATA_SPHERICAL,                  AV_FRAME_DATA_SPHERICAL },
1748
        { AV_PKT_DATA_STEREO3D,                   AV_FRAME_DATA_STEREO3D },
1749
        { AV_PKT_DATA_AUDIO_SERVICE_TYPE,         AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
1750
        { AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
1751
        { AV_PKT_DATA_CONTENT_LIGHT_LEVEL,        AV_FRAME_DATA_CONTENT_LIGHT_LEVEL },
1752
        { AV_PKT_DATA_A53_CC,                     AV_FRAME_DATA_A53_CC },
1753
        { AV_PKT_DATA_ICC_PROFILE,                AV_FRAME_DATA_ICC_PROFILE },
1754
    };
1755
1756
439860
    if (pkt) {
1757
439860
        frame->pts = pkt->pts;
1758
#if FF_API_PKT_PTS
1759
FF_DISABLE_DEPRECATION_WARNINGS
1760
439860
        frame->pkt_pts = pkt->pts;
1761
FF_ENABLE_DEPRECATION_WARNINGS
1762
#endif
1763
439860
        frame->pkt_pos      = pkt->pos;
1764
439860
        frame->pkt_duration = pkt->duration;
1765
439860
        frame->pkt_size     = pkt->size;
1766
1767
4398600
        for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1768
            int size;
1769
3958740
            uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1770
3958740
            if (packet_sd) {
1771
209
                AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
1772
                                                                   sd[i].frame,
1773
                                                                   size);
1774
209
                if (!frame_sd)
1775
                    return AVERROR(ENOMEM);
1776
1777
209
                memcpy(frame_sd->data, packet_sd, size);
1778
            }
1779
        }
1780
439860
        add_metadata_from_side_data(pkt, frame);
1781
1782
439860
        if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1783
196
            frame->flags |= AV_FRAME_FLAG_DISCARD;
1784
        } else {
1785
439664
            frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
1786
        }
1787
    }
1788
439860
    frame->reordered_opaque = avctx->reordered_opaque;
1789
1790
439860
    if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
1791
439860
        frame->color_primaries = avctx->color_primaries;
1792
439860
    if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
1793
439860
        frame->color_trc = avctx->color_trc;
1794
439860
    if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
1795
439425
        frame->colorspace = avctx->colorspace;
1796
439860
    if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
1797
439642
        frame->color_range = avctx->color_range;
1798
439860
    if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
1799
439860
        frame->chroma_location = avctx->chroma_sample_location;
1800
1801
439860
    switch (avctx->codec->type) {
1802
117542
    case AVMEDIA_TYPE_VIDEO:
1803
117542
        frame->format              = avctx->pix_fmt;
1804
117542
        if (!frame->sample_aspect_ratio.num)
1805
117423
            frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
1806
1807

213710
        if (frame->width && frame->height &&
1808
96168
            av_image_check_sar(frame->width, frame->height,
1809
                               frame->sample_aspect_ratio) < 0) {
1810
            av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1811
                   frame->sample_aspect_ratio.num,
1812
                   frame->sample_aspect_ratio.den);
1813
            frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1814
        }
1815
1816
117542
        break;
1817
322318
    case AVMEDIA_TYPE_AUDIO:
1818
322318
        if (!frame->sample_rate)
1819
322318
            frame->sample_rate    = avctx->sample_rate;
1820
322318
        if (frame->format < 0)
1821
322318
            frame->format         = avctx->sample_fmt;
1822
322318
        if (!frame->channel_layout) {
1823
322318
            if (avctx->channel_layout) {
1824
321002
                 if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
1825
321002
                     avctx->channels) {
1826
                     av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1827
                            "configuration.\n");
1828
                     return AVERROR(EINVAL);
1829
                 }
1830
1831
321002
                frame->channel_layout = avctx->channel_layout;
1832
            } else {
1833
1316
                if (avctx->channels > FF_SANE_NB_CHANNELS) {
1834
                    av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1835
                           avctx->channels);
1836
                    return AVERROR(ENOSYS);
1837
                }
1838
            }
1839
        }
1840
322318
        frame->channels = avctx->channels;
1841
322318
        break;
1842
    }
1843
439860
    return 0;
1844
}
1845
1846
413165
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
1847
{
1848
413165
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1849
        int i;
1850
90847
        int num_planes = av_pix_fmt_count_planes(frame->format);
1851
90847
        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
1852
90847
        int flags = desc ? desc->flags : 0;
1853

90847
        if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1854
2127
            num_planes = 2;
1855

90847
        if ((flags & FF_PSEUDOPAL) && frame->data[1])
1856
276
            num_planes = 2;
1857
350722
        for (i = 0; i < num_planes; i++) {
1858
259875
            av_assert0(frame->data[i]);
1859
        }
1860
        // For formats without data like hwaccel allow unused pointers to be non-NULL.
1861

557748
        for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1862
466901
            if (frame->data[i])
1863
                av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1864
466901
            frame->data[i] = NULL;
1865
        }
1866
    }
1867
413165
}
1868
1869
413165
static void decode_data_free(void *opaque, uint8_t *data)
1870
{
1871
413165
    FrameDecodeData *fdd = (FrameDecodeData*)data;
1872
1873
413165
    if (fdd->post_process_opaque_free)
1874
        fdd->post_process_opaque_free(fdd->post_process_opaque);
1875
1876
413165
    if (fdd->hwaccel_priv_free)
1877
        fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1878
1879
413165
    av_freep(&fdd);
1880
413165
}
1881
1882
413165
int ff_attach_decode_data(AVFrame *frame)
1883
{
1884
    AVBufferRef *fdd_buf;
1885
    FrameDecodeData *fdd;
1886
1887
    av_assert1(!frame->private_ref);
1888
413165
    av_buffer_unref(&frame->private_ref);
1889
1890
413165
    fdd = av_mallocz(sizeof(*fdd));
1891
413165
    if (!fdd)
1892
        return AVERROR(ENOMEM);
1893
1894
413165
    fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1895
                               NULL, AV_BUFFER_FLAG_READONLY);
1896
413165
    if (!fdd_buf) {
1897
        av_freep(&fdd);
1898
        return AVERROR(ENOMEM);
1899
    }
1900
1901
413165
    frame->private_ref = fdd_buf;
1902
1903
413165
    return 0;
1904
}
1905
1906
413165
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
1907
{
1908
413165
    const AVHWAccel *hwaccel = avctx->hwaccel;
1909
413165
    int override_dimensions = 1;
1910
    int ret;
1911
1912
413165
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1913

90847
        if ((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) {
1914
            av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1915
            return AVERROR(EINVAL);
1916
        }
1917
1918

90847
        if (frame->width <= 0 || frame->height <= 0) {
1919
81239
            frame->width  = FFMAX(avctx->width,  AV_CEIL_RSHIFT(avctx->coded_width,  avctx->lowres));
1920
81239
            frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1921
81239
            override_dimensions = 0;
1922
        }
1923
1924


90847
        if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1925
            av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1926
            return AVERROR(EINVAL);
1927
        }
1928
322318
    } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1929
322318
        if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) {
1930
            av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
1931
            return AVERROR(EINVAL);
1932
        }
1933
    }
1934
413165
    ret = ff_decode_frame_props(avctx, frame);
1935
413165
    if (ret < 0)
1936
        return ret;
1937
1938
413165
    if (hwaccel) {
1939
        if (hwaccel->alloc_frame) {
1940
            ret = hwaccel->alloc_frame(avctx, frame);
1941
            goto end;
1942
        }
1943
    } else
1944
413165
        avctx->sw_pix_fmt = avctx->pix_fmt;
1945
1946
413165
    ret = avctx->get_buffer2(avctx, frame, flags);
1947
413165
    if (ret < 0)
1948
        goto end;
1949
1950
413165
    validate_avframe_allocation(avctx, frame);
1951
1952
413165
    ret = ff_attach_decode_data(frame);
1953
413165
    if (ret < 0)
1954
        goto end;
1955
1956
413165
end:
1957

413165
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1958
81239
        !(avctx->codec->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)) {
1959
48346
        frame->width  = avctx->width;
1960
48346
        frame->height = avctx->height;
1961
    }
1962
1963
413165
    if (ret < 0)
1964
        av_frame_unref(frame);
1965
1966
413165
    return ret;
1967
}
1968
1969
413165
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
1970
{
1971
413165
    int ret = get_buffer_internal(avctx, frame, flags);
1972
413165
    if (ret < 0) {
1973
        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1974
        frame->width = frame->height = 0;
1975
    }
1976
413165
    return ret;
1977
}
1978
1979
6868
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
1980
{
1981
    AVFrame *tmp;
1982
    int ret;
1983
1984
6868
    av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
1985
1986


6868
    if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1987
        av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1988
               frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1989
        av_frame_unref(frame);
1990
    }
1991
1992
6868
    if (!frame->data[0])
1993
120
        return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1994
1995

6748
    if ((flags & FF_REGET_BUFFER_FLAG_READONLY) || av_frame_is_writable(frame))
1996
5212
        return ff_decode_frame_props(avctx, frame);
1997
1998
1536
    tmp = av_frame_alloc();
1999
1536
    if (!tmp)
2000
        return AVERROR(ENOMEM);
2001
2002
1536
    av_frame_move_ref(tmp, frame);
2003
2004
1536
    ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
2005
1536
    if (ret < 0) {
2006
        av_frame_free(&tmp);
2007
        return ret;
2008
    }
2009
2010
1536
    av_frame_copy(frame, tmp);
2011
1536
    av_frame_free(&tmp);
2012
2013
1536
    return 0;
2014
}
2015
2016
6868
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
2017
{
2018
6868
    int ret = reget_buffer_internal(avctx, frame, flags);
2019
6868
    if (ret < 0)
2020
        av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
2021
6868
    return ret;
2022
}
2023
2024
28
static void bsfs_flush(AVCodecContext *avctx)
2025
{
2026
28
    DecodeFilterContext *s = &avctx->internal->filter;
2027
2028
56
    for (int i = 0; i < s->nb_bsfs; i++)
2029
28
        av_bsf_flush(s->bsfs[i]);
2030
28
}
2031
2032
28
void avcodec_flush_buffers(AVCodecContext *avctx)
2033
{
2034
28
    AVCodecInternal *avci = avctx->internal;
2035
2036
28
    avci->draining      = 0;
2037
28
    avci->draining_done = 0;
2038
28
    avci->nb_draining_errors = 0;
2039
28
    av_frame_unref(avci->buffer_frame);
2040
28
    av_frame_unref(avci->compat_decode_frame);
2041
28
    av_packet_unref(avci->buffer_pkt);
2042
28
    avci->buffer_pkt_valid = 0;
2043
2044
28
    av_packet_unref(avci->ds.in_pkt);
2045
2046
28
    if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2047
        ff_thread_flush(avctx);
2048
28
    else if (avctx->codec->flush)
2049
        avctx->codec->flush(avctx);
2050
2051
28
    avctx->pts_correction_last_pts =
2052
28
    avctx->pts_correction_last_dts = INT64_MIN;
2053
2054
28
    bsfs_flush(avctx);
2055
2056
28
    if (!avctx->refcounted_frames)
2057
28
        av_frame_unref(avci->to_free);
2058
28
}
2059
2060
18303
void ff_decode_bsfs_uninit(AVCodecContext *avctx)
2061
{
2062
18303
    DecodeFilterContext *s = &avctx->internal->filter;
2063
    int i;
2064
2065
30713
    for (i = 0; i < s->nb_bsfs; i++)
2066
12410
        av_bsf_free(&s->bsfs[i]);
2067
18303
    av_freep(&s->bsfs);
2068
18303
    s->nb_bsfs = 0;
2069
18303
}