2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/mathematics.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/parseutils.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/time.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion
[] = "FFmpeg version " FFMPEG_VERSION
;
61 * various utility functions for use within FFmpeg
64 unsigned avformat_version(void)
66 av_assert0(LIBAVFORMAT_VERSION_MICRO
>= 100);
67 return LIBAVFORMAT_VERSION_INT
;
70 const char *avformat_configuration(void)
72 return FFMPEG_CONFIGURATION
;
75 const char *avformat_license(void)
77 #define LICENSE_PREFIX "libavformat license: "
78 return LICENSE_PREFIX FFMPEG_LICENSE
+ sizeof(LICENSE_PREFIX
) - 1;
81 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
83 static int is_relative(int64_t ts
) {
84 return ts
> (RELATIVE_TS_BASE
- (1LL<<48));
88 * Wrap a given time stamp, if there is an indication for an overflow
91 * @param timestamp the time stamp to wrap
92 * @return resulting time stamp
94 static int64_t wrap_timestamp(AVStream
*st
, int64_t timestamp
)
96 if (st
->pts_wrap_behavior
!= AV_PTS_WRAP_IGNORE
&&
97 st
->pts_wrap_reference
!= AV_NOPTS_VALUE
&& timestamp
!= AV_NOPTS_VALUE
) {
98 if (st
->pts_wrap_behavior
== AV_PTS_WRAP_ADD_OFFSET
&&
99 timestamp
< st
->pts_wrap_reference
)
100 return timestamp
+ (1ULL << st
->pts_wrap_bits
);
101 else if (st
->pts_wrap_behavior
== AV_PTS_WRAP_SUB_OFFSET
&&
102 timestamp
>= st
->pts_wrap_reference
)
103 return timestamp
- (1ULL << st
->pts_wrap_bits
);
108 MAKE_ACCESSORS(AVStream
, stream
, AVRational
, r_frame_rate
)
109 MAKE_ACCESSORS(AVStream
, stream
, char *, recommended_encoder_configuration
)
110 MAKE_ACCESSORS(AVFormatContext
, format
, AVCodec
*, video_codec
)
111 MAKE_ACCESSORS(AVFormatContext
, format
, AVCodec
*, audio_codec
)
112 MAKE_ACCESSORS(AVFormatContext
, format
, AVCodec
*, subtitle_codec
)
113 MAKE_ACCESSORS(AVFormatContext
, format
, int, metadata_header_padding
)
114 MAKE_ACCESSORS(AVFormatContext
, format
, void *, opaque
)
115 MAKE_ACCESSORS(AVFormatContext
, format
, av_format_control_message
, control_message_cb
)
117 int64_t av_stream_get_end_pts(const AVStream
*st
)
122 struct AVCodecParserContext
*av_stream_get_parser(const AVStream
*st
)
127 void av_format_inject_global_side_data(AVFormatContext
*s
)
130 s
->internal
->inject_global_side_data
= 1;
131 for (i
= 0; i
< s
->nb_streams
; i
++) {
132 AVStream
*st
= s
->streams
[i
];
133 st
->inject_global_side_data
= 1;
137 int ff_copy_whitelists(AVFormatContext
*dst
, AVFormatContext
*src
)
139 av_assert0(!dst
->codec_whitelist
&& !dst
->format_whitelist
);
140 dst
-> codec_whitelist
= av_strdup(src
->codec_whitelist
);
141 dst
->format_whitelist
= av_strdup(src
->format_whitelist
);
142 if ( (src
-> codec_whitelist
&& !dst
-> codec_whitelist
)
143 || (src
->format_whitelist
&& !dst
->format_whitelist
)) {
144 av_log(dst
, AV_LOG_ERROR
, "Failed to duplicate whitelist\n");
145 return AVERROR(ENOMEM
);
150 static const AVCodec
*find_decoder(AVFormatContext
*s
, AVStream
*st
, enum AVCodecID codec_id
)
152 if (st
->codec
->codec
)
153 return st
->codec
->codec
;
155 switch (st
->codec
->codec_type
) {
156 case AVMEDIA_TYPE_VIDEO
:
157 if (s
->video_codec
) return s
->video_codec
;
159 case AVMEDIA_TYPE_AUDIO
:
160 if (s
->audio_codec
) return s
->audio_codec
;
162 case AVMEDIA_TYPE_SUBTITLE
:
163 if (s
->subtitle_codec
) return s
->subtitle_codec
;
167 return avcodec_find_decoder(codec_id
);
170 int av_format_get_probe_score(const AVFormatContext
*s
)
172 return s
->probe_score
;
175 /* an arbitrarily chosen "sane" max packet size -- 50M */
176 #define SANE_CHUNK_SIZE (50000000)
178 int ffio_limit(AVIOContext
*s
, int size
)
180 if (s
->maxsize
>= 0) {
181 int64_t remaining
= s
->maxsize
- avio_tell(s
);
182 if (remaining
< size
) {
183 int64_t newsize
= avio_size(s
);
184 if (!s
->maxsize
|| s
->maxsize
<newsize
)
185 s
->maxsize
= newsize
- !newsize
;
186 remaining
= s
->maxsize
- avio_tell(s
);
187 remaining
= FFMAX(remaining
, 0);
190 if (s
->maxsize
>= 0 && remaining
+1 < size
) {
191 av_log(NULL
, remaining
? AV_LOG_ERROR
: AV_LOG_DEBUG
, "Truncating packet of size %d to %"PRId64
"\n", size
, remaining
+1);
198 /* Read the data in sane-sized chunks and append to pkt.
199 * Return the number of bytes read or an error. */
200 static int append_packet_chunked(AVIOContext
*s
, AVPacket
*pkt
, int size
)
202 int64_t orig_pos
= pkt
->pos
; // av_grow_packet might reset pos
203 int orig_size
= pkt
->size
;
207 int prev_size
= pkt
->size
;
210 /* When the caller requests a lot of data, limit it to the amount
211 * left in file or SANE_CHUNK_SIZE when it is not known. */
213 if (read_size
> SANE_CHUNK_SIZE
/10) {
214 read_size
= ffio_limit(s
, read_size
);
215 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
217 read_size
= FFMIN(read_size
, SANE_CHUNK_SIZE
);
220 ret
= av_grow_packet(pkt
, read_size
);
224 ret
= avio_read(s
, pkt
->data
+ prev_size
, read_size
);
225 if (ret
!= read_size
) {
226 av_shrink_packet(pkt
, prev_size
+ FFMAX(ret
, 0));
233 pkt
->flags
|= AV_PKT_FLAG_CORRUPT
;
238 return pkt
->size
> orig_size
? pkt
->size
- orig_size
: ret
;
241 int av_get_packet(AVIOContext
*s
, AVPacket
*pkt
, int size
)
246 pkt
->pos
= avio_tell(s
);
248 return append_packet_chunked(s
, pkt
, size
);
251 int av_append_packet(AVIOContext
*s
, AVPacket
*pkt
, int size
)
254 return av_get_packet(s
, pkt
, size
);
255 return append_packet_chunked(s
, pkt
, size
);
258 int av_filename_number_test(const char *filename
)
262 (av_get_frame_filename(buf
, sizeof(buf
), filename
, 1) >= 0);
265 static int set_codec_from_probe_data(AVFormatContext
*s
, AVStream
*st
,
268 static const struct {
271 enum AVMediaType type
;
273 { "aac", AV_CODEC_ID_AAC
, AVMEDIA_TYPE_AUDIO
},
274 { "ac3", AV_CODEC_ID_AC3
, AVMEDIA_TYPE_AUDIO
},
275 { "dts", AV_CODEC_ID_DTS
, AVMEDIA_TYPE_AUDIO
},
276 { "eac3", AV_CODEC_ID_EAC3
, AVMEDIA_TYPE_AUDIO
},
277 { "h264", AV_CODEC_ID_H264
, AVMEDIA_TYPE_VIDEO
},
278 { "hevc", AV_CODEC_ID_HEVC
, AVMEDIA_TYPE_VIDEO
},
279 { "loas", AV_CODEC_ID_AAC_LATM
, AVMEDIA_TYPE_AUDIO
},
280 { "m4v", AV_CODEC_ID_MPEG4
, AVMEDIA_TYPE_VIDEO
},
281 { "mp3", AV_CODEC_ID_MP3
, AVMEDIA_TYPE_AUDIO
},
282 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO
, AVMEDIA_TYPE_VIDEO
},
286 AVInputFormat
*fmt
= av_probe_input_format3(pd
, 1, &score
);
288 if (fmt
&& st
->request_probe
<= score
) {
290 av_log(s
, AV_LOG_DEBUG
,
291 "Probe with size=%d, packets=%d detected %s with score=%d\n",
292 pd
->buf_size
, MAX_PROBE_PACKETS
- st
->probe_packets
,
294 for (i
= 0; fmt_id_type
[i
].name
; i
++) {
295 if (!strcmp(fmt
->name
, fmt_id_type
[i
].name
)) {
296 st
->codec
->codec_id
= fmt_id_type
[i
].id
;
297 st
->codec
->codec_type
= fmt_id_type
[i
].type
;
305 /************************************************************/
306 /* input media file */
308 int av_demuxer_open(AVFormatContext
*ic
) {
311 if (ic
->format_whitelist
&& av_match_list(ic
->iformat
->name
, ic
->format_whitelist
, ',') <= 0) {
312 av_log(ic
, AV_LOG_ERROR
, "Format not on whitelist\n");
313 return AVERROR(EINVAL
);
316 if (ic
->iformat
->read_header
) {
317 err
= ic
->iformat
->read_header(ic
);
322 if (ic
->pb
&& !ic
->data_offset
)
323 ic
->data_offset
= avio_tell(ic
->pb
);
328 /* Open input file and probe the format if necessary. */
329 static int init_input(AVFormatContext
*s
, const char *filename
,
330 AVDictionary
**options
)
333 AVProbeData pd
= { filename
, NULL
, 0 };
334 int score
= AVPROBE_SCORE_RETRY
;
337 s
->flags
|= AVFMT_FLAG_CUSTOM_IO
;
339 return av_probe_input_buffer2(s
->pb
, &s
->iformat
, filename
,
340 s
, 0, s
->format_probesize
);
341 else if (s
->iformat
->flags
& AVFMT_NOFILE
)
342 av_log(s
, AV_LOG_WARNING
, "Custom AVIOContext makes no sense and "
343 "will be ignored with AVFMT_NOFILE format.\n");
347 if ((s
->iformat
&& s
->iformat
->flags
& AVFMT_NOFILE
) ||
348 (!s
->iformat
&& (s
->iformat
= av_probe_input_format2(&pd
, 0, &score
))))
351 if ((ret
= avio_open2(&s
->pb
, filename
, AVIO_FLAG_READ
| s
->avio_flags
,
352 &s
->interrupt_callback
, options
)) < 0)
356 return av_probe_input_buffer2(s
->pb
, &s
->iformat
, filename
,
357 s
, 0, s
->format_probesize
);
360 static AVPacket
*add_to_pktbuf(AVPacketList
**packet_buffer
, AVPacket
*pkt
,
361 AVPacketList
**plast_pktl
)
363 AVPacketList
*pktl
= av_mallocz(sizeof(AVPacketList
));
368 (*plast_pktl
)->next
= pktl
;
370 *packet_buffer
= pktl
;
372 /* Add the packet in the buffered packet list. */
378 int avformat_queue_attached_pictures(AVFormatContext
*s
)
381 for (i
= 0; i
< s
->nb_streams
; i
++)
382 if (s
->streams
[i
]->disposition
& AV_DISPOSITION_ATTACHED_PIC
&&
383 s
->streams
[i
]->discard
< AVDISCARD_ALL
) {
384 AVPacket copy
= s
->streams
[i
]->attached_pic
;
385 if (copy
.size
<= 0) {
386 av_log(s
, AV_LOG_WARNING
,
387 "Attached picture on stream %d has invalid size, "
391 copy
.buf
= av_buffer_ref(copy
.buf
);
393 return AVERROR(ENOMEM
);
395 add_to_pktbuf(&s
->raw_packet_buffer
, ©
,
396 &s
->raw_packet_buffer_end
);
401 int avformat_open_input(AVFormatContext
**ps
, const char *filename
,
402 AVInputFormat
*fmt
, AVDictionary
**options
)
404 AVFormatContext
*s
= *ps
;
406 AVDictionary
*tmp
= NULL
;
407 ID3v2ExtraMeta
*id3v2_extra_meta
= NULL
;
409 if (!s
&& !(s
= avformat_alloc_context()))
410 return AVERROR(ENOMEM
);
412 av_log(NULL
, AV_LOG_ERROR
, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
413 return AVERROR(EINVAL
);
419 av_dict_copy(&tmp
, *options
, 0);
421 if ((ret
= av_opt_set_dict(s
, &tmp
)) < 0)
424 if ((ret
= init_input(s
, filename
, &tmp
)) < 0)
426 s
->probe_score
= ret
;
428 if (s
->format_whitelist
&& av_match_list(s
->iformat
->name
, s
->format_whitelist
, ',') <= 0) {
429 av_log(s
, AV_LOG_ERROR
, "Format not on whitelist\n");
430 ret
= AVERROR(EINVAL
);
434 avio_skip(s
->pb
, s
->skip_initial_bytes
);
436 /* Check filename in case an image number is expected. */
437 if (s
->iformat
->flags
& AVFMT_NEEDNUMBER
) {
438 if (!av_filename_number_test(filename
)) {
439 ret
= AVERROR(EINVAL
);
444 s
->duration
= s
->start_time
= AV_NOPTS_VALUE
;
445 av_strlcpy(s
->filename
, filename
? filename
: "", sizeof(s
->filename
));
447 /* Allocate private data. */
448 if (s
->iformat
->priv_data_size
> 0) {
449 if (!(s
->priv_data
= av_mallocz(s
->iformat
->priv_data_size
))) {
450 ret
= AVERROR(ENOMEM
);
453 if (s
->iformat
->priv_class
) {
454 *(const AVClass
**) s
->priv_data
= s
->iformat
->priv_class
;
455 av_opt_set_defaults(s
->priv_data
);
456 if ((ret
= av_opt_set_dict(s
->priv_data
, &tmp
)) < 0)
461 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
463 ff_id3v2_read(s
, ID3v2_DEFAULT_MAGIC
, &id3v2_extra_meta
, 0);
465 if (!(s
->flags
&AVFMT_FLAG_PRIV_OPT
) && s
->iformat
->read_header
)
466 if ((ret
= s
->iformat
->read_header(s
)) < 0)
469 if (id3v2_extra_meta
) {
470 if (!strcmp(s
->iformat
->name
, "mp3") || !strcmp(s
->iformat
->name
, "aac") ||
471 !strcmp(s
->iformat
->name
, "tta")) {
472 if ((ret
= ff_id3v2_parse_apic(s
, &id3v2_extra_meta
)) < 0)
475 av_log(s
, AV_LOG_DEBUG
, "demuxer does not support additional id3 data, skipping\n");
477 ff_id3v2_free_extra_meta(&id3v2_extra_meta
);
479 if ((ret
= avformat_queue_attached_pictures(s
)) < 0)
482 if (!(s
->flags
&AVFMT_FLAG_PRIV_OPT
) && s
->pb
&& !s
->data_offset
)
483 s
->data_offset
= avio_tell(s
->pb
);
485 s
->raw_packet_buffer_remaining_size
= RAW_PACKET_BUFFER_SIZE
;
488 av_dict_free(options
);
495 ff_id3v2_free_extra_meta(&id3v2_extra_meta
);
497 if (s
->pb
&& !(s
->flags
& AVFMT_FLAG_CUSTOM_IO
))
499 avformat_free_context(s
);
504 /*******************************************************/
506 static void force_codec_ids(AVFormatContext
*s
, AVStream
*st
)
508 switch (st
->codec
->codec_type
) {
509 case AVMEDIA_TYPE_VIDEO
:
510 if (s
->video_codec_id
)
511 st
->codec
->codec_id
= s
->video_codec_id
;
513 case AVMEDIA_TYPE_AUDIO
:
514 if (s
->audio_codec_id
)
515 st
->codec
->codec_id
= s
->audio_codec_id
;
517 case AVMEDIA_TYPE_SUBTITLE
:
518 if (s
->subtitle_codec_id
)
519 st
->codec
->codec_id
= s
->subtitle_codec_id
;
524 static int probe_codec(AVFormatContext
*s
, AVStream
*st
, const AVPacket
*pkt
)
526 if (st
->request_probe
>0) {
527 AVProbeData
*pd
= &st
->probe_data
;
529 av_log(s
, AV_LOG_DEBUG
, "probing stream %d pp:%d\n", st
->index
, st
->probe_packets
);
533 uint8_t *new_buf
= av_realloc(pd
->buf
, pd
->buf_size
+pkt
->size
+AVPROBE_PADDING_SIZE
);
535 av_log(s
, AV_LOG_WARNING
,
536 "Failed to reallocate probe buffer for stream %d\n",
541 memcpy(pd
->buf
+ pd
->buf_size
, pkt
->data
, pkt
->size
);
542 pd
->buf_size
+= pkt
->size
;
543 memset(pd
->buf
+ pd
->buf_size
, 0, AVPROBE_PADDING_SIZE
);
546 st
->probe_packets
= 0;
548 av_log(s
, AV_LOG_WARNING
,
549 "nothing to probe for stream %d\n", st
->index
);
553 end
= s
->raw_packet_buffer_remaining_size
<= 0
554 || st
->probe_packets
<= 0;
556 if (end
|| av_log2(pd
->buf_size
) != av_log2(pd
->buf_size
- pkt
->size
)) {
557 int score
= set_codec_from_probe_data(s
, st
, pd
);
558 if ( (st
->codec
->codec_id
!= AV_CODEC_ID_NONE
&& score
> AVPROBE_SCORE_STREAM_RETRY
)
562 st
->request_probe
= -1;
563 if (st
->codec
->codec_id
!= AV_CODEC_ID_NONE
) {
564 av_log(s
, AV_LOG_DEBUG
, "probed stream %d\n", st
->index
);
566 av_log(s
, AV_LOG_WARNING
, "probed stream %d failed\n", st
->index
);
568 force_codec_ids(s
, st
);
574 static int update_wrap_reference(AVFormatContext
*s
, AVStream
*st
, int stream_index
, AVPacket
*pkt
)
576 int64_t ref
= pkt
->dts
;
577 int i
, pts_wrap_behavior
;
578 int64_t pts_wrap_reference
;
579 AVProgram
*first_program
;
581 if (ref
== AV_NOPTS_VALUE
)
583 if (st
->pts_wrap_reference
!= AV_NOPTS_VALUE
|| st
->pts_wrap_bits
>= 63 || ref
== AV_NOPTS_VALUE
|| !s
->correct_ts_overflow
)
585 ref
&= (1LL << st
->pts_wrap_bits
)-1;
587 // reference time stamp should be 60 s before first time stamp
588 pts_wrap_reference
= ref
- av_rescale(60, st
->time_base
.den
, st
->time_base
.num
);
589 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
590 pts_wrap_behavior
= (ref
< (1LL << st
->pts_wrap_bits
) - (1LL << st
->pts_wrap_bits
-3)) ||
591 (ref
< (1LL << st
->pts_wrap_bits
) - av_rescale(60, st
->time_base
.den
, st
->time_base
.num
)) ?
592 AV_PTS_WRAP_ADD_OFFSET
: AV_PTS_WRAP_SUB_OFFSET
;
594 first_program
= av_find_program_from_stream(s
, NULL
, stream_index
);
596 if (!first_program
) {
597 int default_stream_index
= av_find_default_stream_index(s
);
598 if (s
->streams
[default_stream_index
]->pts_wrap_reference
== AV_NOPTS_VALUE
) {
599 for (i
= 0; i
< s
->nb_streams
; i
++) {
600 if (av_find_program_from_stream(s
, NULL
, i
))
602 s
->streams
[i
]->pts_wrap_reference
= pts_wrap_reference
;
603 s
->streams
[i
]->pts_wrap_behavior
= pts_wrap_behavior
;
607 st
->pts_wrap_reference
= s
->streams
[default_stream_index
]->pts_wrap_reference
;
608 st
->pts_wrap_behavior
= s
->streams
[default_stream_index
]->pts_wrap_behavior
;
612 AVProgram
*program
= first_program
;
614 if (program
->pts_wrap_reference
!= AV_NOPTS_VALUE
) {
615 pts_wrap_reference
= program
->pts_wrap_reference
;
616 pts_wrap_behavior
= program
->pts_wrap_behavior
;
619 program
= av_find_program_from_stream(s
, program
, stream_index
);
622 // update every program with differing pts_wrap_reference
623 program
= first_program
;
625 if (program
->pts_wrap_reference
!= pts_wrap_reference
) {
626 for (i
= 0; i
<program
->nb_stream_indexes
; i
++) {
627 s
->streams
[program
->stream_index
[i
]]->pts_wrap_reference
= pts_wrap_reference
;
628 s
->streams
[program
->stream_index
[i
]]->pts_wrap_behavior
= pts_wrap_behavior
;
631 program
->pts_wrap_reference
= pts_wrap_reference
;
632 program
->pts_wrap_behavior
= pts_wrap_behavior
;
634 program
= av_find_program_from_stream(s
, program
, stream_index
);
640 int ff_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
646 AVPacketList
*pktl
= s
->raw_packet_buffer
;
650 st
= s
->streams
[pkt
->stream_index
];
651 if (s
->raw_packet_buffer_remaining_size
<= 0)
652 if ((err
= probe_codec(s
, st
, NULL
)) < 0)
654 if (st
->request_probe
<= 0) {
655 s
->raw_packet_buffer
= pktl
->next
;
656 s
->raw_packet_buffer_remaining_size
+= pkt
->size
;
665 ret
= s
->iformat
->read_packet(s
, pkt
);
667 if (!pktl
|| ret
== AVERROR(EAGAIN
))
669 for (i
= 0; i
< s
->nb_streams
; i
++) {
671 if (st
->probe_packets
)
672 if ((err
= probe_codec(s
, st
, NULL
)) < 0)
674 av_assert0(st
->request_probe
<= 0);
679 if ((s
->flags
& AVFMT_FLAG_DISCARD_CORRUPT
) &&
680 (pkt
->flags
& AV_PKT_FLAG_CORRUPT
)) {
681 av_log(s
, AV_LOG_WARNING
,
682 "Dropped corrupted packet (stream = %d)\n",
688 if (pkt
->stream_index
>= (unsigned)s
->nb_streams
) {
689 av_log(s
, AV_LOG_ERROR
, "Invalid stream index %d\n", pkt
->stream_index
);
693 st
= s
->streams
[pkt
->stream_index
];
695 if (update_wrap_reference(s
, st
, pkt
->stream_index
, pkt
) && st
->pts_wrap_behavior
== AV_PTS_WRAP_SUB_OFFSET
) {
696 // correct first time stamps to negative values
697 if (!is_relative(st
->first_dts
))
698 st
->first_dts
= wrap_timestamp(st
, st
->first_dts
);
699 if (!is_relative(st
->start_time
))
700 st
->start_time
= wrap_timestamp(st
, st
->start_time
);
701 if (!is_relative(st
->cur_dts
))
702 st
->cur_dts
= wrap_timestamp(st
, st
->cur_dts
);
705 pkt
->dts
= wrap_timestamp(st
, pkt
->dts
);
706 pkt
->pts
= wrap_timestamp(st
, pkt
->pts
);
708 force_codec_ids(s
, st
);
710 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
711 if (s
->use_wallclock_as_timestamps
)
712 pkt
->dts
= pkt
->pts
= av_rescale_q(av_gettime(), AV_TIME_BASE_Q
, st
->time_base
);
714 if (!pktl
&& st
->request_probe
<= 0)
717 add_to_pktbuf(&s
->raw_packet_buffer
, pkt
, &s
->raw_packet_buffer_end
);
718 s
->raw_packet_buffer_remaining_size
-= pkt
->size
;
720 if ((err
= probe_codec(s
, st
, pkt
)) < 0)
726 /**********************************************************/
728 static int determinable_frame_size(AVCodecContext
*avctx
)
730 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
731 avctx
->codec_id
== AV_CODEC_ID_MP1
||
732 avctx
->codec_id
== AV_CODEC_ID_MP2
||
733 avctx
->codec_id
== AV_CODEC_ID_MP3
/* ||
734 avctx->codec_id == AV_CODEC_ID_CELT*/)
740 * Return the frame duration in seconds. Return 0 if not available.
742 void ff_compute_frame_duration(AVFormatContext
*s
, int *pnum
, int *pden
, AVStream
*st
,
743 AVCodecParserContext
*pc
, AVPacket
*pkt
)
745 AVRational codec_framerate
= s
->iformat
? st
->codec
->framerate
:
746 av_mul_q(av_inv_q(st
->codec
->time_base
), (AVRational
){1, st
->codec
->ticks_per_frame
});
751 switch (st
->codec
->codec_type
) {
752 case AVMEDIA_TYPE_VIDEO
:
753 if (st
->r_frame_rate
.num
&& !pc
) {
754 *pnum
= st
->r_frame_rate
.den
;
755 *pden
= st
->r_frame_rate
.num
;
756 } else if (st
->time_base
.num
* 1000LL > st
->time_base
.den
) {
757 *pnum
= st
->time_base
.num
;
758 *pden
= st
->time_base
.den
;
759 } else if (codec_framerate
.den
* 1000LL > codec_framerate
.num
) {
760 av_assert0(st
->codec
->ticks_per_frame
);
761 av_reduce(pnum
, pden
,
763 codec_framerate
.num
* (int64_t)st
->codec
->ticks_per_frame
,
766 if (pc
&& pc
->repeat_pict
) {
767 av_assert0(s
->iformat
); // this may be wrong for interlaced encoding but its not used for that case
768 av_reduce(pnum
, pden
,
769 (*pnum
) * (1LL + pc
->repeat_pict
),
773 /* If this codec can be interlaced or progressive then we need
774 * a parser to compute duration of a packet. Thus if we have
775 * no parser in such case leave duration undefined. */
776 if (st
->codec
->ticks_per_frame
> 1 && !pc
)
780 case AVMEDIA_TYPE_AUDIO
:
781 frame_size
= av_get_audio_frame_duration(st
->codec
, pkt
->size
);
782 if (frame_size
<= 0 || st
->codec
->sample_rate
<= 0)
785 *pden
= st
->codec
->sample_rate
;
792 static int is_intra_only(AVCodecContext
*enc
) {
793 const AVCodecDescriptor
*desc
;
795 if (enc
->codec_type
!= AVMEDIA_TYPE_VIDEO
)
798 desc
= av_codec_get_codec_descriptor(enc
);
800 desc
= avcodec_descriptor_get(enc
->codec_id
);
801 av_codec_set_codec_descriptor(enc
, desc
);
804 return !!(desc
->props
& AV_CODEC_PROP_INTRA_ONLY
);
808 static int has_decode_delay_been_guessed(AVStream
*st
)
810 if (st
->codec
->codec_id
!= AV_CODEC_ID_H264
) return 1;
811 if (!st
->info
) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
813 #if CONFIG_H264_DECODER
814 if (st
->codec
->has_b_frames
&&
815 avpriv_h264_has_num_reorder_frames(st
->codec
) == st
->codec
->has_b_frames
)
818 if (st
->codec
->has_b_frames
<3)
819 return st
->nb_decoded_frames
>= 7;
820 else if (st
->codec
->has_b_frames
<4)
821 return st
->nb_decoded_frames
>= 18;
823 return st
->nb_decoded_frames
>= 20;
826 static AVPacketList
*get_next_pkt(AVFormatContext
*s
, AVStream
*st
, AVPacketList
*pktl
)
830 if (pktl
== s
->packet_buffer_end
)
831 return s
->parse_queue
;
835 static int64_t select_from_pts_buffer(AVStream
*st
, int64_t *pts_buffer
, int64_t dts
) {
836 int onein_oneout
= st
->codec
->codec_id
!= AV_CODEC_ID_H264
&&
837 st
->codec
->codec_id
!= AV_CODEC_ID_HEVC
;
840 int delay
= st
->codec
->has_b_frames
;
843 if (dts
== AV_NOPTS_VALUE
) {
844 int64_t best_score
= INT64_MAX
;
845 for (i
= 0; i
<delay
; i
++) {
846 if (st
->pts_reorder_error_count
[i
]) {
847 int64_t score
= st
->pts_reorder_error
[i
] / st
->pts_reorder_error_count
[i
];
848 if (score
< best_score
) {
855 for (i
= 0; i
<delay
; i
++) {
856 if (pts_buffer
[i
] != AV_NOPTS_VALUE
) {
857 int64_t diff
= FFABS(pts_buffer
[i
] - dts
)
858 + (uint64_t)st
->pts_reorder_error
[i
];
859 diff
= FFMAX(diff
, st
->pts_reorder_error
[i
]);
860 st
->pts_reorder_error
[i
] = diff
;
861 st
->pts_reorder_error_count
[i
]++;
862 if (st
->pts_reorder_error_count
[i
] > 250) {
863 st
->pts_reorder_error
[i
] >>= 1;
864 st
->pts_reorder_error_count
[i
] >>= 1;
871 if (dts
== AV_NOPTS_VALUE
)
877 static void update_initial_timestamps(AVFormatContext
*s
, int stream_index
,
878 int64_t dts
, int64_t pts
, AVPacket
*pkt
)
880 AVStream
*st
= s
->streams
[stream_index
];
881 AVPacketList
*pktl
= s
->packet_buffer
? s
->packet_buffer
: s
->parse_queue
;
882 int64_t pts_buffer
[MAX_REORDER_DELAY
+1];
886 if (st
->first_dts
!= AV_NOPTS_VALUE
||
887 dts
== AV_NOPTS_VALUE
||
888 st
->cur_dts
== AV_NOPTS_VALUE
||
892 delay
= st
->codec
->has_b_frames
;
893 st
->first_dts
= dts
- (st
->cur_dts
- RELATIVE_TS_BASE
);
895 shift
= st
->first_dts
- RELATIVE_TS_BASE
;
897 for (i
= 0; i
<MAX_REORDER_DELAY
+1; i
++)
898 pts_buffer
[i
] = AV_NOPTS_VALUE
;
900 if (is_relative(pts
))
903 for (; pktl
; pktl
= get_next_pkt(s
, st
, pktl
)) {
904 if (pktl
->pkt
.stream_index
!= stream_index
)
906 if (is_relative(pktl
->pkt
.pts
))
907 pktl
->pkt
.pts
+= shift
;
909 if (is_relative(pktl
->pkt
.dts
))
910 pktl
->pkt
.dts
+= shift
;
912 if (st
->start_time
== AV_NOPTS_VALUE
&& pktl
->pkt
.pts
!= AV_NOPTS_VALUE
)
913 st
->start_time
= pktl
->pkt
.pts
;
915 if (pktl
->pkt
.pts
!= AV_NOPTS_VALUE
&& delay
<= MAX_REORDER_DELAY
&& has_decode_delay_been_guessed(st
)) {
916 pts_buffer
[0] = pktl
->pkt
.pts
;
917 for (i
= 0; i
<delay
&& pts_buffer
[i
] > pts_buffer
[i
+ 1]; i
++)
918 FFSWAP(int64_t, pts_buffer
[i
], pts_buffer
[i
+ 1]);
920 pktl
->pkt
.dts
= select_from_pts_buffer(st
, pts_buffer
, pktl
->pkt
.dts
);
924 if (st
->start_time
== AV_NOPTS_VALUE
)
925 st
->start_time
= pts
;
928 static void update_initial_durations(AVFormatContext
*s
, AVStream
*st
,
929 int stream_index
, int duration
)
931 AVPacketList
*pktl
= s
->packet_buffer
? s
->packet_buffer
: s
->parse_queue
;
932 int64_t cur_dts
= RELATIVE_TS_BASE
;
934 if (st
->first_dts
!= AV_NOPTS_VALUE
) {
935 if (st
->update_initial_durations_done
)
937 st
->update_initial_durations_done
= 1;
938 cur_dts
= st
->first_dts
;
939 for (; pktl
; pktl
= get_next_pkt(s
, st
, pktl
)) {
940 if (pktl
->pkt
.stream_index
== stream_index
) {
941 if (pktl
->pkt
.pts
!= pktl
->pkt
.dts
||
942 pktl
->pkt
.dts
!= AV_NOPTS_VALUE
||
948 if (pktl
&& pktl
->pkt
.dts
!= st
->first_dts
) {
949 av_log(s
, AV_LOG_DEBUG
, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
950 av_ts2str(st
->first_dts
), av_ts2str(pktl
->pkt
.dts
), av_ts2str(pktl
->pkt
.pts
), pktl
->pkt
.duration
);
954 av_log(s
, AV_LOG_DEBUG
, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st
->first_dts
));
957 pktl
= s
->packet_buffer
? s
->packet_buffer
: s
->parse_queue
;
958 st
->first_dts
= cur_dts
;
959 } else if (st
->cur_dts
!= RELATIVE_TS_BASE
)
962 for (; pktl
; pktl
= get_next_pkt(s
, st
, pktl
)) {
963 if (pktl
->pkt
.stream_index
!= stream_index
)
965 if (pktl
->pkt
.pts
== pktl
->pkt
.dts
&&
966 (pktl
->pkt
.dts
== AV_NOPTS_VALUE
|| pktl
->pkt
.dts
== st
->first_dts
) &&
967 !pktl
->pkt
.duration
) {
968 pktl
->pkt
.dts
= cur_dts
;
969 if (!st
->codec
->has_b_frames
)
970 pktl
->pkt
.pts
= cur_dts
;
971 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
972 pktl
->pkt
.duration
= duration
;
975 cur_dts
= pktl
->pkt
.dts
+ pktl
->pkt
.duration
;
978 st
->cur_dts
= cur_dts
;
981 static void compute_pkt_fields(AVFormatContext
*s
, AVStream
*st
,
982 AVCodecParserContext
*pc
, AVPacket
*pkt
)
984 int num
, den
, presentation_delayed
, delay
, i
;
987 int onein_oneout
= st
->codec
->codec_id
!= AV_CODEC_ID_H264
&&
988 st
->codec
->codec_id
!= AV_CODEC_ID_HEVC
;
990 if (s
->flags
& AVFMT_FLAG_NOFILLIN
)
993 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&& pkt
->dts
!= AV_NOPTS_VALUE
) {
994 if (pkt
->dts
== pkt
->pts
&& st
->last_dts_for_order_check
!= AV_NOPTS_VALUE
) {
995 if (st
->last_dts_for_order_check
<= pkt
->dts
) {
998 av_log(s
, st
->dts_misordered
? AV_LOG_DEBUG
: AV_LOG_WARNING
,
999 "DTS %"PRIi64
" < %"PRIi64
" out of order\n",
1001 st
->last_dts_for_order_check
);
1002 st
->dts_misordered
++;
1004 if (st
->dts_ordered
+ st
->dts_misordered
> 250) {
1005 st
->dts_ordered
>>= 1;
1006 st
->dts_misordered
>>= 1;
1010 st
->last_dts_for_order_check
= pkt
->dts
;
1011 if (st
->dts_ordered
< 8*st
->dts_misordered
&& pkt
->dts
== pkt
->pts
)
1012 pkt
->dts
= AV_NOPTS_VALUE
;
1015 if ((s
->flags
& AVFMT_FLAG_IGNDTS
) && pkt
->pts
!= AV_NOPTS_VALUE
)
1016 pkt
->dts
= AV_NOPTS_VALUE
;
1018 if (pc
&& pc
->pict_type
== AV_PICTURE_TYPE_B
1019 && !st
->codec
->has_b_frames
)
1020 //FIXME Set low_delay = 0 when has_b_frames = 1
1021 st
->codec
->has_b_frames
= 1;
1023 /* do we have a video B-frame ? */
1024 delay
= st
->codec
->has_b_frames
;
1025 presentation_delayed
= 0;
1027 /* XXX: need has_b_frame, but cannot get it if the codec is
1028 * not initialized */
1030 pc
&& pc
->pict_type
!= AV_PICTURE_TYPE_B
)
1031 presentation_delayed
= 1;
1033 if (pkt
->pts
!= AV_NOPTS_VALUE
&& pkt
->dts
!= AV_NOPTS_VALUE
&&
1034 st
->pts_wrap_bits
< 63 &&
1035 pkt
->dts
- (1LL << (st
->pts_wrap_bits
- 1)) > pkt
->pts
) {
1036 if (is_relative(st
->cur_dts
) || pkt
->dts
- (1LL<<(st
->pts_wrap_bits
- 1)) > st
->cur_dts
) {
1037 pkt
->dts
-= 1LL << st
->pts_wrap_bits
;
1039 pkt
->pts
+= 1LL << st
->pts_wrap_bits
;
1042 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1043 * We take the conservative approach and discard both.
1044 * Note: If this is misbehaving for an H.264 file, then possibly
1045 * presentation_delayed is not set correctly. */
1046 if (delay
== 1 && pkt
->dts
== pkt
->pts
&&
1047 pkt
->dts
!= AV_NOPTS_VALUE
&& presentation_delayed
) {
1048 av_log(s
, AV_LOG_DEBUG
, "invalid dts/pts combination %"PRIi64
"\n", pkt
->dts
);
1049 if ( strcmp(s
->iformat
->name
, "mov,mp4,m4a,3gp,3g2,mj2")
1050 && strcmp(s
->iformat
->name
, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1051 pkt
->dts
= AV_NOPTS_VALUE
;
1054 duration
= av_mul_q((AVRational
) {pkt
->duration
, 1}, st
->time_base
);
1055 if (pkt
->duration
== 0) {
1056 ff_compute_frame_duration(s
, &num
, &den
, st
, pc
, pkt
);
1058 duration
= (AVRational
) {num
, den
};
1059 pkt
->duration
= av_rescale_rnd(1,
1060 num
* (int64_t) st
->time_base
.den
,
1061 den
* (int64_t) st
->time_base
.num
,
1066 if (pkt
->duration
!= 0 && (s
->packet_buffer
|| s
->parse_queue
))
1067 update_initial_durations(s
, st
, pkt
->stream_index
, pkt
->duration
);
1069 /* Correct timestamps with byte offset if demuxers only have timestamps
1070 * on packet boundaries */
1071 if (pc
&& st
->need_parsing
== AVSTREAM_PARSE_TIMESTAMPS
&& pkt
->size
) {
1072 /* this will estimate bitrate based on this frame's duration and size */
1073 offset
= av_rescale(pc
->offset
, pkt
->duration
, pkt
->size
);
1074 if (pkt
->pts
!= AV_NOPTS_VALUE
)
1076 if (pkt
->dts
!= AV_NOPTS_VALUE
)
1080 /* This may be redundant, but it should not hurt. */
1081 if (pkt
->dts
!= AV_NOPTS_VALUE
&&
1082 pkt
->pts
!= AV_NOPTS_VALUE
&&
1083 pkt
->pts
> pkt
->dts
)
1084 presentation_delayed
= 1;
1087 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d delay:%d onein_oneout:%d\n",
1088 presentation_delayed
, av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
), av_ts2str(st
->cur_dts
),
1089 pkt
->stream_index
, pc
, pkt
->duration
, delay
, onein_oneout
);
1090 /* Interpolate PTS and DTS if they are not present. We skip H264
1091 * currently because delay and has_b_frames are not reliably set. */
1092 if ((delay
== 0 || (delay
== 1 && pc
)) &&
1094 if (presentation_delayed
) {
1095 /* DTS = decompression timestamp */
1096 /* PTS = presentation timestamp */
1097 if (pkt
->dts
== AV_NOPTS_VALUE
)
1098 pkt
->dts
= st
->last_IP_pts
;
1099 update_initial_timestamps(s
, pkt
->stream_index
, pkt
->dts
, pkt
->pts
, pkt
);
1100 if (pkt
->dts
== AV_NOPTS_VALUE
)
1101 pkt
->dts
= st
->cur_dts
;
1103 /* This is tricky: the dts must be incremented by the duration
1104 * of the frame we are displaying, i.e. the last I- or P-frame. */
1105 if (st
->last_IP_duration
== 0)
1106 st
->last_IP_duration
= pkt
->duration
;
1107 if (pkt
->dts
!= AV_NOPTS_VALUE
)
1108 st
->cur_dts
= pkt
->dts
+ st
->last_IP_duration
;
1109 st
->last_IP_duration
= pkt
->duration
;
1110 st
->last_IP_pts
= pkt
->pts
;
1111 /* Cannot compute PTS if not present (we can compute it only
1112 * by knowing the future. */
1113 } else if (pkt
->pts
!= AV_NOPTS_VALUE
||
1114 pkt
->dts
!= AV_NOPTS_VALUE
||
1117 /* presentation is not delayed : PTS and DTS are the same */
1118 if (pkt
->pts
== AV_NOPTS_VALUE
)
1119 pkt
->pts
= pkt
->dts
;
1120 update_initial_timestamps(s
, pkt
->stream_index
, pkt
->pts
,
1122 if (pkt
->pts
== AV_NOPTS_VALUE
)
1123 pkt
->pts
= st
->cur_dts
;
1124 pkt
->dts
= pkt
->pts
;
1125 if (pkt
->pts
!= AV_NOPTS_VALUE
)
1126 st
->cur_dts
= av_add_stable(st
->time_base
, pkt
->pts
, duration
, 1);
1130 if (pkt
->pts
!= AV_NOPTS_VALUE
&& delay
<= MAX_REORDER_DELAY
&& has_decode_delay_been_guessed(st
)) {
1131 st
->pts_buffer
[0] = pkt
->pts
;
1132 for (i
= 0; i
<delay
&& st
->pts_buffer
[i
] > st
->pts_buffer
[i
+ 1]; i
++)
1133 FFSWAP(int64_t, st
->pts_buffer
[i
], st
->pts_buffer
[i
+ 1]);
1135 pkt
->dts
= select_from_pts_buffer(st
, st
->pts_buffer
, pkt
->dts
);
1137 // We skipped it above so we try here.
1139 // This should happen on the first packet
1140 update_initial_timestamps(s
, pkt
->stream_index
, pkt
->dts
, pkt
->pts
, pkt
);
1141 if (pkt
->dts
> st
->cur_dts
)
1142 st
->cur_dts
= pkt
->dts
;
1144 av_dlog(NULL
, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1145 presentation_delayed
, delay
, av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
), av_ts2str(st
->cur_dts
));
1148 if (is_intra_only(st
->codec
))
1149 pkt
->flags
|= AV_PKT_FLAG_KEY
;
1151 pkt
->convergence_duration
= pc
->convergence_duration
;
1154 static void free_packet_buffer(AVPacketList
**pkt_buf
, AVPacketList
**pkt_buf_end
)
1157 AVPacketList
*pktl
= *pkt_buf
;
1158 *pkt_buf
= pktl
->next
;
1159 av_free_packet(&pktl
->pkt
);
1162 *pkt_buf_end
= NULL
;
1166 * Parse a packet, add all split parts to parse_queue.
1168 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1170 static int parse_packet(AVFormatContext
*s
, AVPacket
*pkt
, int stream_index
)
1172 AVPacket out_pkt
= { 0 }, flush_pkt
= { 0 };
1173 AVStream
*st
= s
->streams
[stream_index
];
1174 uint8_t *data
= pkt
? pkt
->data
: NULL
;
1175 int size
= pkt
? pkt
->size
: 0;
1176 int ret
= 0, got_output
= 0;
1179 av_init_packet(&flush_pkt
);
1182 } else if (!size
&& st
->parser
->flags
& PARSER_FLAG_COMPLETE_FRAMES
) {
1183 // preserve 0-size sync packets
1184 compute_pkt_fields(s
, st
, st
->parser
, pkt
);
1187 while (size
> 0 || (pkt
== &flush_pkt
&& got_output
)) {
1190 av_init_packet(&out_pkt
);
1191 len
= av_parser_parse2(st
->parser
, st
->codec
,
1192 &out_pkt
.data
, &out_pkt
.size
, data
, size
,
1193 pkt
->pts
, pkt
->dts
, pkt
->pos
);
1195 pkt
->pts
= pkt
->dts
= AV_NOPTS_VALUE
;
1197 /* increment read pointer */
1201 got_output
= !!out_pkt
.size
;
1206 if (pkt
->side_data
) {
1207 out_pkt
.side_data
= pkt
->side_data
;
1208 out_pkt
.side_data_elems
= pkt
->side_data_elems
;
1209 pkt
->side_data
= NULL
;
1210 pkt
->side_data_elems
= 0;
1213 /* set the duration */
1214 out_pkt
.duration
= 0;
1215 if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
1216 if (st
->codec
->sample_rate
> 0) {
1218 av_rescale_q_rnd(st
->parser
->duration
,
1219 (AVRational
) { 1, st
->codec
->sample_rate
},
1225 out_pkt
.stream_index
= st
->index
;
1226 out_pkt
.pts
= st
->parser
->pts
;
1227 out_pkt
.dts
= st
->parser
->dts
;
1228 out_pkt
.pos
= st
->parser
->pos
;
1230 if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
)
1231 out_pkt
.pos
= st
->parser
->frame_offset
;
1233 if (st
->parser
->key_frame
== 1 ||
1234 (st
->parser
->key_frame
== -1 &&
1235 st
->parser
->pict_type
== AV_PICTURE_TYPE_I
))
1236 out_pkt
.flags
|= AV_PKT_FLAG_KEY
;
1238 if (st
->parser
->key_frame
== -1 && st
->parser
->pict_type
==AV_PICTURE_TYPE_NONE
&& (pkt
->flags
&AV_PKT_FLAG_KEY
))
1239 out_pkt
.flags
|= AV_PKT_FLAG_KEY
;
1241 compute_pkt_fields(s
, st
, st
->parser
, &out_pkt
);
1243 if (out_pkt
.data
== pkt
->data
&& out_pkt
.size
== pkt
->size
) {
1244 out_pkt
.buf
= pkt
->buf
;
1246 #if FF_API_DESTRUCT_PACKET
1247 FF_DISABLE_DEPRECATION_WARNINGS
1248 out_pkt
.destruct
= pkt
->destruct
;
1249 pkt
->destruct
= NULL
;
1250 FF_ENABLE_DEPRECATION_WARNINGS
1253 if ((ret
= av_dup_packet(&out_pkt
)) < 0)
1256 if (!add_to_pktbuf(&s
->parse_queue
, &out_pkt
, &s
->parse_queue_end
)) {
1257 av_free_packet(&out_pkt
);
1258 ret
= AVERROR(ENOMEM
);
1263 /* end of the stream => close and free the parser */
1264 if (pkt
== &flush_pkt
) {
1265 av_parser_close(st
->parser
);
1270 av_free_packet(pkt
);
1274 static int read_from_packet_buffer(AVPacketList
**pkt_buffer
,
1275 AVPacketList
**pkt_buffer_end
,
1279 av_assert0(*pkt_buffer
);
1282 *pkt_buffer
= pktl
->next
;
1284 *pkt_buffer_end
= NULL
;
1289 static int64_t ts_to_samples(AVStream
*st
, int64_t ts
)
1291 return av_rescale(ts
, st
->time_base
.num
* st
->codec
->sample_rate
, st
->time_base
.den
);
1294 static int read_frame_internal(AVFormatContext
*s
, AVPacket
*pkt
)
1296 int ret
= 0, i
, got_packet
= 0;
1297 AVDictionary
*metadata
= NULL
;
1299 av_init_packet(pkt
);
1301 while (!got_packet
&& !s
->parse_queue
) {
1305 /* read next packet */
1306 ret
= ff_read_packet(s
, &cur_pkt
);
1308 if (ret
== AVERROR(EAGAIN
))
1310 /* flush the parsers */
1311 for (i
= 0; i
< s
->nb_streams
; i
++) {
1313 if (st
->parser
&& st
->need_parsing
)
1314 parse_packet(s
, NULL
, st
->index
);
1316 /* all remaining packets are now in parse_queue =>
1317 * really terminate parsing */
1321 st
= s
->streams
[cur_pkt
.stream_index
];
1323 if (cur_pkt
.pts
!= AV_NOPTS_VALUE
&&
1324 cur_pkt
.dts
!= AV_NOPTS_VALUE
&&
1325 cur_pkt
.pts
< cur_pkt
.dts
) {
1326 av_log(s
, AV_LOG_WARNING
,
1327 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1328 cur_pkt
.stream_index
,
1329 av_ts2str(cur_pkt
.pts
),
1330 av_ts2str(cur_pkt
.dts
),
1333 if (s
->debug
& FF_FDEBUG_TS
)
1334 av_log(s
, AV_LOG_DEBUG
,
1335 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1336 cur_pkt
.stream_index
,
1337 av_ts2str(cur_pkt
.pts
),
1338 av_ts2str(cur_pkt
.dts
),
1339 cur_pkt
.size
, cur_pkt
.duration
, cur_pkt
.flags
);
1341 if (st
->need_parsing
&& !st
->parser
&& !(s
->flags
& AVFMT_FLAG_NOPARSE
)) {
1342 st
->parser
= av_parser_init(st
->codec
->codec_id
);
1344 av_log(s
, AV_LOG_VERBOSE
, "parser not found for codec "
1345 "%s, packets or times may be invalid.\n",
1346 avcodec_get_name(st
->codec
->codec_id
));
1347 /* no parser available: just output the raw packets */
1348 st
->need_parsing
= AVSTREAM_PARSE_NONE
;
1349 } else if (st
->need_parsing
== AVSTREAM_PARSE_HEADERS
)
1350 st
->parser
->flags
|= PARSER_FLAG_COMPLETE_FRAMES
;
1351 else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_ONCE
)
1352 st
->parser
->flags
|= PARSER_FLAG_ONCE
;
1353 else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
)
1354 st
->parser
->flags
|= PARSER_FLAG_USE_CODEC_TS
;
1357 if (!st
->need_parsing
|| !st
->parser
) {
1358 /* no parsing needed: we just output the packet as is */
1360 compute_pkt_fields(s
, st
, NULL
, pkt
);
1361 if ((s
->iformat
->flags
& AVFMT_GENERIC_INDEX
) &&
1362 (pkt
->flags
& AV_PKT_FLAG_KEY
) && pkt
->dts
!= AV_NOPTS_VALUE
) {
1363 ff_reduce_index(s
, st
->index
);
1364 av_add_index_entry(st
, pkt
->pos
, pkt
->dts
,
1365 0, 0, AVINDEX_KEYFRAME
);
1368 } else if (st
->discard
< AVDISCARD_ALL
) {
1369 if ((ret
= parse_packet(s
, &cur_pkt
, cur_pkt
.stream_index
)) < 0)
1373 av_free_packet(&cur_pkt
);
1375 if (pkt
->flags
& AV_PKT_FLAG_KEY
)
1376 st
->skip_to_keyframe
= 0;
1377 if (st
->skip_to_keyframe
) {
1378 av_free_packet(&cur_pkt
);
1386 if (!got_packet
&& s
->parse_queue
)
1387 ret
= read_from_packet_buffer(&s
->parse_queue
, &s
->parse_queue_end
, pkt
);
1390 AVStream
*st
= s
->streams
[pkt
->stream_index
];
1391 int discard_padding
= 0;
1392 if (st
->first_discard_sample
&& pkt
->pts
!= AV_NOPTS_VALUE
) {
1393 int64_t pts
= pkt
->pts
- (is_relative(pkt
->pts
) ? RELATIVE_TS_BASE
: 0);
1394 int64_t sample
= ts_to_samples(st
, pts
);
1395 int duration
= ts_to_samples(st
, pkt
->duration
);
1396 int64_t end_sample
= sample
+ duration
;
1397 if (duration
> 0 && end_sample
>= st
->first_discard_sample
&&
1398 sample
< st
->last_discard_sample
)
1399 discard_padding
= FFMIN(end_sample
- st
->first_discard_sample
, duration
);
1401 if (st
->skip_samples
|| discard_padding
) {
1402 uint8_t *p
= av_packet_new_side_data(pkt
, AV_PKT_DATA_SKIP_SAMPLES
, 10);
1404 AV_WL32(p
, st
->skip_samples
);
1405 AV_WL32(p
+ 4, discard_padding
);
1406 av_log(s
, AV_LOG_DEBUG
, "demuxer injecting skip %d\n", st
->skip_samples
);
1408 st
->skip_samples
= 0;
1411 if (st
->inject_global_side_data
) {
1412 for (i
= 0; i
< st
->nb_side_data
; i
++) {
1413 AVPacketSideData
*src_sd
= &st
->side_data
[i
];
1416 if (av_packet_get_side_data(pkt
, src_sd
->type
, NULL
))
1419 dst_data
= av_packet_new_side_data(pkt
, src_sd
->type
, src_sd
->size
);
1421 av_log(s
, AV_LOG_WARNING
, "Could not inject global side data\n");
1425 memcpy(dst_data
, src_sd
->data
, src_sd
->size
);
1427 st
->inject_global_side_data
= 0;
1430 if (!(s
->flags
& AVFMT_FLAG_KEEP_SIDE_DATA
))
1431 av_packet_merge_side_data(pkt
);
1434 av_opt_get_dict_val(s
, "metadata", AV_OPT_SEARCH_CHILDREN
, &metadata
);
1436 s
->event_flags
|= AVFMT_EVENT_FLAG_METADATA_UPDATED
;
1437 av_dict_copy(&s
->metadata
, metadata
, 0);
1438 av_dict_free(&metadata
);
1439 av_opt_set_dict_val(s
, "metadata", NULL
, AV_OPT_SEARCH_CHILDREN
);
1442 if (s
->debug
& FF_FDEBUG_TS
)
1443 av_log(s
, AV_LOG_DEBUG
,
1444 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1445 "size=%d, duration=%d, flags=%d\n",
1447 av_ts2str(pkt
->pts
),
1448 av_ts2str(pkt
->dts
),
1449 pkt
->size
, pkt
->duration
, pkt
->flags
);
1454 int av_read_frame(AVFormatContext
*s
, AVPacket
*pkt
)
1456 const int genpts
= s
->flags
& AVFMT_FLAG_GENPTS
;
1462 ret
= s
->packet_buffer
1463 ? read_from_packet_buffer(&s
->packet_buffer
,
1464 &s
->packet_buffer_end
, pkt
)
1465 : read_frame_internal(s
, pkt
);
1472 AVPacketList
*pktl
= s
->packet_buffer
;
1475 AVPacket
*next_pkt
= &pktl
->pkt
;
1477 if (next_pkt
->dts
!= AV_NOPTS_VALUE
) {
1478 int wrap_bits
= s
->streams
[next_pkt
->stream_index
]->pts_wrap_bits
;
1479 // last dts seen for this stream. if any of packets following
1480 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1481 int64_t last_dts
= next_pkt
->dts
;
1482 while (pktl
&& next_pkt
->pts
== AV_NOPTS_VALUE
) {
1483 if (pktl
->pkt
.stream_index
== next_pkt
->stream_index
&&
1484 (av_compare_mod(next_pkt
->dts
, pktl
->pkt
.dts
, 2LL << (wrap_bits
- 1)) < 0)) {
1485 if (av_compare_mod(pktl
->pkt
.pts
, pktl
->pkt
.dts
, 2LL << (wrap_bits
- 1))) {
1487 next_pkt
->pts
= pktl
->pkt
.dts
;
1489 if (last_dts
!= AV_NOPTS_VALUE
) {
1490 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1491 last_dts
= pktl
->pkt
.dts
;
1496 if (eof
&& next_pkt
->pts
== AV_NOPTS_VALUE
&& last_dts
!= AV_NOPTS_VALUE
) {
1497 // Fixing the last reference frame had none pts issue (For MXF etc).
1498 // We only do this when
1500 // 2. we are not able to resolve a pts value for current packet.
1501 // 3. the packets for this stream at the end of the files had valid dts.
1502 next_pkt
->pts
= last_dts
+ next_pkt
->duration
;
1504 pktl
= s
->packet_buffer
;
1507 /* read packet from packet buffer, if there is data */
1508 st
= s
->streams
[next_pkt
->stream_index
];
1509 if (!(next_pkt
->pts
== AV_NOPTS_VALUE
&& st
->discard
< AVDISCARD_ALL
&&
1510 next_pkt
->dts
!= AV_NOPTS_VALUE
&& !eof
)) {
1511 ret
= read_from_packet_buffer(&s
->packet_buffer
,
1512 &s
->packet_buffer_end
, pkt
);
1517 ret
= read_frame_internal(s
, pkt
);
1519 if (pktl
&& ret
!= AVERROR(EAGAIN
)) {
1526 if (av_dup_packet(add_to_pktbuf(&s
->packet_buffer
, pkt
,
1527 &s
->packet_buffer_end
)) < 0)
1528 return AVERROR(ENOMEM
);
1533 st
= s
->streams
[pkt
->stream_index
];
1534 if ((s
->iformat
->flags
& AVFMT_GENERIC_INDEX
) && pkt
->flags
& AV_PKT_FLAG_KEY
) {
1535 ff_reduce_index(s
, st
->index
);
1536 av_add_index_entry(st
, pkt
->pos
, pkt
->dts
, 0, 0, AVINDEX_KEYFRAME
);
1539 if (is_relative(pkt
->dts
))
1540 pkt
->dts
-= RELATIVE_TS_BASE
;
1541 if (is_relative(pkt
->pts
))
1542 pkt
->pts
-= RELATIVE_TS_BASE
;
1547 /* XXX: suppress the packet queue */
1548 static void flush_packet_queue(AVFormatContext
*s
)
1550 free_packet_buffer(&s
->parse_queue
, &s
->parse_queue_end
);
1551 free_packet_buffer(&s
->packet_buffer
, &s
->packet_buffer_end
);
1552 free_packet_buffer(&s
->raw_packet_buffer
, &s
->raw_packet_buffer_end
);
1554 s
->raw_packet_buffer_remaining_size
= RAW_PACKET_BUFFER_SIZE
;
1557 /*******************************************************/
1560 int av_find_default_stream_index(AVFormatContext
*s
)
1564 int best_stream
= 0;
1565 int best_score
= -1;
1567 if (s
->nb_streams
<= 0)
1569 for (i
= 0; i
< s
->nb_streams
; i
++) {
1572 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
1573 !(st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
)) {
1574 if (!st
->codec
->width
&& !st
->codec
->height
&& !st
->codec_info_nb_frames
)
1579 if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
1580 if (!st
->codec
->sample_rate
&& !st
->codec_info_nb_frames
)
1586 if (score
> best_score
) {
1594 /** Flush the frame reader. */
1595 void ff_read_frame_flush(AVFormatContext
*s
)
1600 flush_packet_queue(s
);
1602 /* Reset read state for each stream. */
1603 for (i
= 0; i
< s
->nb_streams
; i
++) {
1607 av_parser_close(st
->parser
);
1610 st
->last_IP_pts
= AV_NOPTS_VALUE
;
1611 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
1612 if (st
->first_dts
== AV_NOPTS_VALUE
)
1613 st
->cur_dts
= RELATIVE_TS_BASE
;
1615 /* We set the current DTS to an unspecified origin. */
1616 st
->cur_dts
= AV_NOPTS_VALUE
;
1618 st
->probe_packets
= MAX_PROBE_PACKETS
;
1620 for (j
= 0; j
< MAX_REORDER_DELAY
+ 1; j
++)
1621 st
->pts_buffer
[j
] = AV_NOPTS_VALUE
;
1623 if (s
->internal
->inject_global_side_data
)
1624 st
->inject_global_side_data
= 1;
1628 void ff_update_cur_dts(AVFormatContext
*s
, AVStream
*ref_st
, int64_t timestamp
)
1632 for (i
= 0; i
< s
->nb_streams
; i
++) {
1633 AVStream
*st
= s
->streams
[i
];
1636 av_rescale(timestamp
,
1637 st
->time_base
.den
* (int64_t) ref_st
->time_base
.num
,
1638 st
->time_base
.num
* (int64_t) ref_st
->time_base
.den
);
1642 void ff_reduce_index(AVFormatContext
*s
, int stream_index
)
1644 AVStream
*st
= s
->streams
[stream_index
];
1645 unsigned int max_entries
= s
->max_index_size
/ sizeof(AVIndexEntry
);
1647 if ((unsigned) st
->nb_index_entries
>= max_entries
) {
1649 for (i
= 0; 2 * i
< st
->nb_index_entries
; i
++)
1650 st
->index_entries
[i
] = st
->index_entries
[2 * i
];
1651 st
->nb_index_entries
= i
;
1655 int ff_add_index_entry(AVIndexEntry
**index_entries
,
1656 int *nb_index_entries
,
1657 unsigned int *index_entries_allocated_size
,
1658 int64_t pos
, int64_t timestamp
,
1659 int size
, int distance
, int flags
)
1661 AVIndexEntry
*entries
, *ie
;
1664 if ((unsigned) *nb_index_entries
+ 1 >= UINT_MAX
/ sizeof(AVIndexEntry
))
1667 if (timestamp
== AV_NOPTS_VALUE
)
1668 return AVERROR(EINVAL
);
1670 if (size
< 0 || size
> 0x3FFFFFFF)
1671 return AVERROR(EINVAL
);
1673 if (is_relative(timestamp
)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1674 timestamp
-= RELATIVE_TS_BASE
;
1676 entries
= av_fast_realloc(*index_entries
,
1677 index_entries_allocated_size
,
1678 (*nb_index_entries
+ 1) *
1679 sizeof(AVIndexEntry
));
1683 *index_entries
= entries
;
1685 index
= ff_index_search_timestamp(*index_entries
, *nb_index_entries
,
1686 timestamp
, AVSEEK_FLAG_ANY
);
1689 index
= (*nb_index_entries
)++;
1690 ie
= &entries
[index
];
1691 av_assert0(index
== 0 || ie
[-1].timestamp
< timestamp
);
1693 ie
= &entries
[index
];
1694 if (ie
->timestamp
!= timestamp
) {
1695 if (ie
->timestamp
<= timestamp
)
1697 memmove(entries
+ index
+ 1, entries
+ index
,
1698 sizeof(AVIndexEntry
) * (*nb_index_entries
- index
));
1699 (*nb_index_entries
)++;
1700 } else if (ie
->pos
== pos
&& distance
< ie
->min_distance
)
1701 // do not reduce the distance
1702 distance
= ie
->min_distance
;
1706 ie
->timestamp
= timestamp
;
1707 ie
->min_distance
= distance
;
1714 int av_add_index_entry(AVStream
*st
, int64_t pos
, int64_t timestamp
,
1715 int size
, int distance
, int flags
)
1717 timestamp
= wrap_timestamp(st
, timestamp
);
1718 return ff_add_index_entry(&st
->index_entries
, &st
->nb_index_entries
,
1719 &st
->index_entries_allocated_size
, pos
,
1720 timestamp
, size
, distance
, flags
);
1723 int ff_index_search_timestamp(const AVIndexEntry
*entries
, int nb_entries
,
1724 int64_t wanted_timestamp
, int flags
)
1732 // Optimize appending index entries at the end.
1733 if (b
&& entries
[b
- 1].timestamp
< wanted_timestamp
)
1738 timestamp
= entries
[m
].timestamp
;
1739 if (timestamp
>= wanted_timestamp
)
1741 if (timestamp
<= wanted_timestamp
)
1744 m
= (flags
& AVSEEK_FLAG_BACKWARD
) ? a
: b
;
1746 if (!(flags
& AVSEEK_FLAG_ANY
))
1747 while (m
>= 0 && m
< nb_entries
&&
1748 !(entries
[m
].flags
& AVINDEX_KEYFRAME
))
1749 m
+= (flags
& AVSEEK_FLAG_BACKWARD
) ? -1 : 1;
1751 if (m
== nb_entries
)
1756 int av_index_search_timestamp(AVStream
*st
, int64_t wanted_timestamp
, int flags
)
1758 return ff_index_search_timestamp(st
->index_entries
, st
->nb_index_entries
,
1759 wanted_timestamp
, flags
);
1762 static int64_t ff_read_timestamp(AVFormatContext
*s
, int stream_index
, int64_t *ppos
, int64_t pos_limit
,
1763 int64_t (*read_timestamp
)(struct AVFormatContext
*, int , int64_t *, int64_t ))
1765 int64_t ts
= read_timestamp(s
, stream_index
, ppos
, pos_limit
);
1766 if (stream_index
>= 0)
1767 ts
= wrap_timestamp(s
->streams
[stream_index
], ts
);
1771 int ff_seek_frame_binary(AVFormatContext
*s
, int stream_index
,
1772 int64_t target_ts
, int flags
)
1774 AVInputFormat
*avif
= s
->iformat
;
1775 int64_t av_uninit(pos_min
), av_uninit(pos_max
), pos
, pos_limit
;
1776 int64_t ts_min
, ts_max
, ts
;
1781 if (stream_index
< 0)
1784 av_dlog(s
, "read_seek: %d %s\n", stream_index
, av_ts2str(target_ts
));
1787 ts_min
= AV_NOPTS_VALUE
;
1788 pos_limit
= -1; // GCC falsely says it may be uninitialized.
1790 st
= s
->streams
[stream_index
];
1791 if (st
->index_entries
) {
1794 /* FIXME: Whole function must be checked for non-keyframe entries in
1795 * index case, especially read_timestamp(). */
1796 index
= av_index_search_timestamp(st
, target_ts
,
1797 flags
| AVSEEK_FLAG_BACKWARD
);
1798 index
= FFMAX(index
, 0);
1799 e
= &st
->index_entries
[index
];
1801 if (e
->timestamp
<= target_ts
|| e
->pos
== e
->min_distance
) {
1803 ts_min
= e
->timestamp
;
1804 av_dlog(s
, "using cached pos_min=0x%"PRIx64
" dts_min=%s\n",
1805 pos_min
, av_ts2str(ts_min
));
1807 av_assert1(index
== 0);
1810 index
= av_index_search_timestamp(st
, target_ts
,
1811 flags
& ~AVSEEK_FLAG_BACKWARD
);
1812 av_assert0(index
< st
->nb_index_entries
);
1814 e
= &st
->index_entries
[index
];
1815 av_assert1(e
->timestamp
>= target_ts
);
1817 ts_max
= e
->timestamp
;
1818 pos_limit
= pos_max
- e
->min_distance
;
1819 av_dlog(s
, "using cached pos_max=0x%"PRIx64
" pos_limit=0x%"PRIx64
1820 " dts_max=%s\n", pos_max
, pos_limit
, av_ts2str(ts_max
));
1824 pos
= ff_gen_search(s
, stream_index
, target_ts
, pos_min
, pos_max
, pos_limit
,
1825 ts_min
, ts_max
, flags
, &ts
, avif
->read_timestamp
);
1830 if ((ret
= avio_seek(s
->pb
, pos
, SEEK_SET
)) < 0)
1833 ff_read_frame_flush(s
);
1834 ff_update_cur_dts(s
, st
, ts
);
1839 int ff_find_last_ts(AVFormatContext
*s
, int stream_index
, int64_t *ts
, int64_t *pos
,
1840 int64_t (*read_timestamp
)(struct AVFormatContext
*, int , int64_t *, int64_t ))
1842 int64_t step
= 1024;
1843 int64_t limit
, ts_max
;
1844 int64_t filesize
= avio_size(s
->pb
);
1845 int64_t pos_max
= filesize
- 1;
1848 pos_max
= FFMAX(0, (pos_max
) - step
);
1849 ts_max
= ff_read_timestamp(s
, stream_index
,
1850 &pos_max
, limit
, read_timestamp
);
1852 } while (ts_max
== AV_NOPTS_VALUE
&& 2*limit
> step
);
1853 if (ts_max
== AV_NOPTS_VALUE
)
1857 int64_t tmp_pos
= pos_max
+ 1;
1858 int64_t tmp_ts
= ff_read_timestamp(s
, stream_index
,
1859 &tmp_pos
, INT64_MAX
, read_timestamp
);
1860 if (tmp_ts
== AV_NOPTS_VALUE
)
1862 av_assert0(tmp_pos
> pos_max
);
1865 if (tmp_pos
>= filesize
)
1877 int64_t ff_gen_search(AVFormatContext
*s
, int stream_index
, int64_t target_ts
,
1878 int64_t pos_min
, int64_t pos_max
, int64_t pos_limit
,
1879 int64_t ts_min
, int64_t ts_max
,
1880 int flags
, int64_t *ts_ret
,
1881 int64_t (*read_timestamp
)(struct AVFormatContext
*, int,
1882 int64_t *, int64_t))
1889 av_dlog(s
, "gen_seek: %d %s\n", stream_index
, av_ts2str(target_ts
));
1891 if (ts_min
== AV_NOPTS_VALUE
) {
1892 pos_min
= s
->data_offset
;
1893 ts_min
= ff_read_timestamp(s
, stream_index
, &pos_min
, INT64_MAX
, read_timestamp
);
1894 if (ts_min
== AV_NOPTS_VALUE
)
1898 if (ts_min
>= target_ts
) {
1903 if (ts_max
== AV_NOPTS_VALUE
) {
1904 if ((ret
= ff_find_last_ts(s
, stream_index
, &ts_max
, &pos_max
, read_timestamp
)) < 0)
1906 pos_limit
= pos_max
;
1909 if (ts_max
<= target_ts
) {
1914 if (ts_min
> ts_max
)
1916 else if (ts_min
== ts_max
)
1917 pos_limit
= pos_min
;
1920 while (pos_min
< pos_limit
) {
1922 "pos_min=0x%"PRIx64
" pos_max=0x%"PRIx64
" dts_min=%s dts_max=%s\n",
1923 pos_min
, pos_max
, av_ts2str(ts_min
), av_ts2str(ts_max
));
1924 assert(pos_limit
<= pos_max
);
1926 if (no_change
== 0) {
1927 int64_t approximate_keyframe_distance
= pos_max
- pos_limit
;
1928 // interpolate position (better than dichotomy)
1929 pos
= av_rescale(target_ts
- ts_min
, pos_max
- pos_min
,
1931 pos_min
- approximate_keyframe_distance
;
1932 } else if (no_change
== 1) {
1933 // bisection if interpolation did not change min / max pos last time
1934 pos
= (pos_min
+ pos_limit
) >> 1;
1936 /* linear search if bisection failed, can only happen if there
1937 * are very few or no keyframes between min/max */
1942 else if (pos
> pos_limit
)
1946 // May pass pos_limit instead of -1.
1947 ts
= ff_read_timestamp(s
, stream_index
, &pos
, INT64_MAX
, read_timestamp
);
1952 av_dlog(s
, "%"PRId64
" %"PRId64
" %"PRId64
" / %s %s %s"
1953 " target:%s limit:%"PRId64
" start:%"PRId64
" noc:%d\n",
1954 pos_min
, pos
, pos_max
,
1955 av_ts2str(ts_min
), av_ts2str(ts
), av_ts2str(ts_max
), av_ts2str(target_ts
),
1956 pos_limit
, start_pos
, no_change
);
1957 if (ts
== AV_NOPTS_VALUE
) {
1958 av_log(s
, AV_LOG_ERROR
, "read_timestamp() failed in the middle\n");
1961 if (target_ts
<= ts
) {
1962 pos_limit
= start_pos
- 1;
1966 if (target_ts
>= ts
) {
1972 pos
= (flags
& AVSEEK_FLAG_BACKWARD
) ? pos_min
: pos_max
;
1973 ts
= (flags
& AVSEEK_FLAG_BACKWARD
) ? ts_min
: ts_max
;
1976 ts_min
= ff_read_timestamp(s
, stream_index
, &pos_min
, INT64_MAX
, read_timestamp
);
1978 ts_max
= ff_read_timestamp(s
, stream_index
, &pos_min
, INT64_MAX
, read_timestamp
);
1979 av_dlog(s
, "pos=0x%"PRIx64
" %s<=%s<=%s\n",
1980 pos
, av_ts2str(ts_min
), av_ts2str(target_ts
), av_ts2str(ts_max
));
1986 static int seek_frame_byte(AVFormatContext
*s
, int stream_index
,
1987 int64_t pos
, int flags
)
1989 int64_t pos_min
, pos_max
;
1991 pos_min
= s
->data_offset
;
1992 pos_max
= avio_size(s
->pb
) - 1;
1996 else if (pos
> pos_max
)
1999 avio_seek(s
->pb
, pos
, SEEK_SET
);
2001 s
->io_repositioned
= 1;
2006 static int seek_frame_generic(AVFormatContext
*s
, int stream_index
,
2007 int64_t timestamp
, int flags
)
2014 st
= s
->streams
[stream_index
];
2016 index
= av_index_search_timestamp(st
, timestamp
, flags
);
2018 if (index
< 0 && st
->nb_index_entries
&&
2019 timestamp
< st
->index_entries
[0].timestamp
)
2022 if (index
< 0 || index
== st
->nb_index_entries
- 1) {
2026 if (st
->nb_index_entries
) {
2027 av_assert0(st
->index_entries
);
2028 ie
= &st
->index_entries
[st
->nb_index_entries
- 1];
2029 if ((ret
= avio_seek(s
->pb
, ie
->pos
, SEEK_SET
)) < 0)
2031 ff_update_cur_dts(s
, st
, ie
->timestamp
);
2033 if ((ret
= avio_seek(s
->pb
, s
->data_offset
, SEEK_SET
)) < 0)
2039 read_status
= av_read_frame(s
, &pkt
);
2040 } while (read_status
== AVERROR(EAGAIN
));
2041 if (read_status
< 0)
2043 av_free_packet(&pkt
);
2044 if (stream_index
== pkt
.stream_index
&& pkt
.dts
> timestamp
) {
2045 if (pkt
.flags
& AV_PKT_FLAG_KEY
)
2047 if (nonkey
++ > 1000 && st
->codec
->codec_id
!= AV_CODEC_ID_CDGRAPHICS
) {
2048 av_log(s
, AV_LOG_ERROR
,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey
);
2053 index
= av_index_search_timestamp(st
, timestamp
, flags
);
2058 ff_read_frame_flush(s
);
2059 if (s
->iformat
->read_seek
)
2060 if (s
->iformat
->read_seek(s
, stream_index
, timestamp
, flags
) >= 0)
2062 ie
= &st
->index_entries
[index
];
2063 if ((ret
= avio_seek(s
->pb
, ie
->pos
, SEEK_SET
)) < 0)
2065 ff_update_cur_dts(s
, st
, ie
->timestamp
);
2070 static int seek_frame_internal(AVFormatContext
*s
, int stream_index
,
2071 int64_t timestamp
, int flags
)
2076 if (flags
& AVSEEK_FLAG_BYTE
) {
2077 if (s
->iformat
->flags
& AVFMT_NO_BYTE_SEEK
)
2079 ff_read_frame_flush(s
);
2080 return seek_frame_byte(s
, stream_index
, timestamp
, flags
);
2083 if (stream_index
< 0) {
2084 stream_index
= av_find_default_stream_index(s
);
2085 if (stream_index
< 0)
2088 st
= s
->streams
[stream_index
];
2089 /* timestamp for default must be expressed in AV_TIME_BASE units */
2090 timestamp
= av_rescale(timestamp
, st
->time_base
.den
,
2091 AV_TIME_BASE
* (int64_t) st
->time_base
.num
);
2094 /* first, we try the format specific seek */
2095 if (s
->iformat
->read_seek
) {
2096 ff_read_frame_flush(s
);
2097 ret
= s
->iformat
->read_seek(s
, stream_index
, timestamp
, flags
);
2103 if (s
->iformat
->read_timestamp
&&
2104 !(s
->iformat
->flags
& AVFMT_NOBINSEARCH
)) {
2105 ff_read_frame_flush(s
);
2106 return ff_seek_frame_binary(s
, stream_index
, timestamp
, flags
);
2107 } else if (!(s
->iformat
->flags
& AVFMT_NOGENSEARCH
)) {
2108 ff_read_frame_flush(s
);
2109 return seek_frame_generic(s
, stream_index
, timestamp
, flags
);
2114 int av_seek_frame(AVFormatContext
*s
, int stream_index
,
2115 int64_t timestamp
, int flags
)
2119 if (s
->iformat
->read_seek2
&& !s
->iformat
->read_seek
) {
2120 int64_t min_ts
= INT64_MIN
, max_ts
= INT64_MAX
;
2121 if ((flags
& AVSEEK_FLAG_BACKWARD
))
2125 return avformat_seek_file(s
, stream_index
, min_ts
, timestamp
, max_ts
,
2126 flags
& ~AVSEEK_FLAG_BACKWARD
);
2129 ret
= seek_frame_internal(s
, stream_index
, timestamp
, flags
);
2132 ret
= avformat_queue_attached_pictures(s
);
2137 int avformat_seek_file(AVFormatContext
*s
, int stream_index
, int64_t min_ts
,
2138 int64_t ts
, int64_t max_ts
, int flags
)
2140 if (min_ts
> ts
|| max_ts
< ts
)
2142 if (stream_index
< -1 || stream_index
>= (int)s
->nb_streams
)
2143 return AVERROR(EINVAL
);
2146 flags
|= AVSEEK_FLAG_ANY
;
2147 flags
&= ~AVSEEK_FLAG_BACKWARD
;
2149 if (s
->iformat
->read_seek2
) {
2151 ff_read_frame_flush(s
);
2153 if (stream_index
== -1 && s
->nb_streams
== 1) {
2154 AVRational time_base
= s
->streams
[0]->time_base
;
2155 ts
= av_rescale_q(ts
, AV_TIME_BASE_Q
, time_base
);
2156 min_ts
= av_rescale_rnd(min_ts
, time_base
.den
,
2157 time_base
.num
* (int64_t)AV_TIME_BASE
,
2158 AV_ROUND_UP
| AV_ROUND_PASS_MINMAX
);
2159 max_ts
= av_rescale_rnd(max_ts
, time_base
.den
,
2160 time_base
.num
* (int64_t)AV_TIME_BASE
,
2161 AV_ROUND_DOWN
| AV_ROUND_PASS_MINMAX
);
2164 ret
= s
->iformat
->read_seek2(s
, stream_index
, min_ts
,
2168 ret
= avformat_queue_attached_pictures(s
);
2172 if (s
->iformat
->read_timestamp
) {
2173 // try to seek via read_timestamp()
2176 // Fall back on old API if new is not implemented but old is.
2177 // Note the old API has somewhat different semantics.
2178 if (s
->iformat
->read_seek
|| 1) {
2179 int dir
= (ts
- (uint64_t)min_ts
> (uint64_t)max_ts
- ts
? AVSEEK_FLAG_BACKWARD
: 0);
2180 int ret
= av_seek_frame(s
, stream_index
, ts
, flags
| dir
);
2181 if (ret
<0 && ts
!= min_ts
&& max_ts
!= ts
) {
2182 ret
= av_seek_frame(s
, stream_index
, dir
? max_ts
: min_ts
, flags
| dir
);
2184 ret
= av_seek_frame(s
, stream_index
, ts
, flags
| (dir
^AVSEEK_FLAG_BACKWARD
));
2189 // try some generic seek like seek_frame_generic() but with new ts semantics
2190 return -1; //unreachable
2193 /*******************************************************/
2196 * Return TRUE if the stream has accurate duration in any stream.
2198 * @return TRUE if the stream has accurate duration for at least one component.
2200 static int has_duration(AVFormatContext
*ic
)
2205 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2206 st
= ic
->streams
[i
];
2207 if (st
->duration
!= AV_NOPTS_VALUE
)
2210 if (ic
->duration
!= AV_NOPTS_VALUE
)
2216 * Estimate the stream timings from the one of each components.
2218 * Also computes the global bitrate if possible.
2220 static void update_stream_timings(AVFormatContext
*ic
)
2222 int64_t start_time
, start_time1
, start_time_text
, end_time
, end_time1
;
2223 int64_t duration
, duration1
, filesize
;
2228 start_time
= INT64_MAX
;
2229 start_time_text
= INT64_MAX
;
2230 end_time
= INT64_MIN
;
2231 duration
= INT64_MIN
;
2232 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2233 st
= ic
->streams
[i
];
2234 if (st
->start_time
!= AV_NOPTS_VALUE
&& st
->time_base
.den
) {
2235 start_time1
= av_rescale_q(st
->start_time
, st
->time_base
,
2237 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
|| st
->codec
->codec_type
== AVMEDIA_TYPE_DATA
) {
2238 if (start_time1
< start_time_text
)
2239 start_time_text
= start_time1
;
2241 start_time
= FFMIN(start_time
, start_time1
);
2242 end_time1
= AV_NOPTS_VALUE
;
2243 if (st
->duration
!= AV_NOPTS_VALUE
) {
2244 end_time1
= start_time1
+
2245 av_rescale_q(st
->duration
, st
->time_base
,
2247 end_time
= FFMAX(end_time
, end_time1
);
2249 for (p
= NULL
; (p
= av_find_program_from_stream(ic
, p
, i
)); ) {
2250 if (p
->start_time
== AV_NOPTS_VALUE
|| p
->start_time
> start_time1
)
2251 p
->start_time
= start_time1
;
2252 if (p
->end_time
< end_time1
)
2253 p
->end_time
= end_time1
;
2256 if (st
->duration
!= AV_NOPTS_VALUE
) {
2257 duration1
= av_rescale_q(st
->duration
, st
->time_base
,
2259 duration
= FFMAX(duration
, duration1
);
2262 if (start_time
== INT64_MAX
|| (start_time
> start_time_text
&& start_time
- start_time_text
< AV_TIME_BASE
))
2263 start_time
= start_time_text
;
2264 else if (start_time
> start_time_text
)
2265 av_log(ic
, AV_LOG_VERBOSE
, "Ignoring outlier non primary stream starttime %f\n", start_time_text
/ (float)AV_TIME_BASE
);
2267 if (start_time
!= INT64_MAX
) {
2268 ic
->start_time
= start_time
;
2269 if (end_time
!= INT64_MIN
) {
2270 if (ic
->nb_programs
) {
2271 for (i
= 0; i
< ic
->nb_programs
; i
++) {
2272 p
= ic
->programs
[i
];
2273 if (p
->start_time
!= AV_NOPTS_VALUE
&& p
->end_time
> p
->start_time
)
2274 duration
= FFMAX(duration
, p
->end_time
- p
->start_time
);
2277 duration
= FFMAX(duration
, end_time
- start_time
);
2280 if (duration
!= INT64_MIN
&& duration
> 0 && ic
->duration
== AV_NOPTS_VALUE
) {
2281 ic
->duration
= duration
;
2283 if (ic
->pb
&& (filesize
= avio_size(ic
->pb
)) > 0 && ic
->duration
!= AV_NOPTS_VALUE
) {
2284 /* compute the bitrate */
2285 double bitrate
= (double) filesize
* 8.0 * AV_TIME_BASE
/
2286 (double) ic
->duration
;
2287 if (bitrate
>= 0 && bitrate
<= INT_MAX
)
2288 ic
->bit_rate
= bitrate
;
2292 static void fill_all_stream_timings(AVFormatContext
*ic
)
2297 update_stream_timings(ic
);
2298 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2299 st
= ic
->streams
[i
];
2300 if (st
->start_time
== AV_NOPTS_VALUE
) {
2301 if (ic
->start_time
!= AV_NOPTS_VALUE
)
2302 st
->start_time
= av_rescale_q(ic
->start_time
, AV_TIME_BASE_Q
,
2304 if (ic
->duration
!= AV_NOPTS_VALUE
)
2305 st
->duration
= av_rescale_q(ic
->duration
, AV_TIME_BASE_Q
,
2311 static void estimate_timings_from_bit_rate(AVFormatContext
*ic
)
2313 int64_t filesize
, duration
;
2314 int i
, show_warning
= 0;
2317 /* if bit_rate is already set, we believe it */
2318 if (ic
->bit_rate
<= 0) {
2320 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2321 st
= ic
->streams
[i
];
2322 if (st
->codec
->bit_rate
> 0) {
2323 if (INT_MAX
- st
->codec
->bit_rate
< bit_rate
) {
2327 bit_rate
+= st
->codec
->bit_rate
;
2330 ic
->bit_rate
= bit_rate
;
2333 /* if duration is already set, we believe it */
2334 if (ic
->duration
== AV_NOPTS_VALUE
&&
2335 ic
->bit_rate
!= 0) {
2336 filesize
= ic
->pb
? avio_size(ic
->pb
) : 0;
2337 if (filesize
> ic
->data_offset
) {
2338 filesize
-= ic
->data_offset
;
2339 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2340 st
= ic
->streams
[i
];
2341 if ( st
->time_base
.num
<= INT64_MAX
/ ic
->bit_rate
2342 && st
->duration
== AV_NOPTS_VALUE
) {
2343 duration
= av_rescale(8 * filesize
, st
->time_base
.den
,
2345 (int64_t) st
->time_base
.num
);
2346 st
->duration
= duration
;
2353 av_log(ic
, AV_LOG_WARNING
,
2354 "Estimating duration from bitrate, this may be inaccurate\n");
2357 #define DURATION_MAX_READ_SIZE 250000LL
2358 #define DURATION_MAX_RETRY 4
2360 /* only usable for MPEG-PS streams */
2361 static void estimate_timings_from_pts(AVFormatContext
*ic
, int64_t old_offset
)
2363 AVPacket pkt1
, *pkt
= &pkt1
;
2365 int num
, den
, read_size
, i
, ret
;
2366 int found_duration
= 0;
2368 int64_t filesize
, offset
, duration
;
2371 /* flush packet queue */
2372 flush_packet_queue(ic
);
2374 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2375 st
= ic
->streams
[i
];
2376 if (st
->start_time
== AV_NOPTS_VALUE
&&
2377 st
->first_dts
== AV_NOPTS_VALUE
&&
2378 st
->codec
->codec_type
!= AVMEDIA_TYPE_UNKNOWN
)
2379 av_log(st
->codec
, AV_LOG_WARNING
,
2380 "start time for stream %d is not set in estimate_timings_from_pts\n", i
);
2383 av_parser_close(st
->parser
);
2388 av_opt_set(ic
, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN
);
2389 /* estimate the end time (duration) */
2390 /* XXX: may need to support wrapping */
2391 filesize
= ic
->pb
? avio_size(ic
->pb
) : 0;
2393 is_end
= found_duration
;
2394 offset
= filesize
- (DURATION_MAX_READ_SIZE
<< retry
);
2398 avio_seek(ic
->pb
, offset
, SEEK_SET
);
2401 if (read_size
>= DURATION_MAX_READ_SIZE
<< (FFMAX(retry
- 1, 0)))
2405 ret
= ff_read_packet(ic
, pkt
);
2406 } while (ret
== AVERROR(EAGAIN
));
2409 read_size
+= pkt
->size
;
2410 st
= ic
->streams
[pkt
->stream_index
];
2411 if (pkt
->pts
!= AV_NOPTS_VALUE
&&
2412 (st
->start_time
!= AV_NOPTS_VALUE
||
2413 st
->first_dts
!= AV_NOPTS_VALUE
)) {
2414 if (pkt
->duration
== 0) {
2415 ff_compute_frame_duration(ic
, &num
, &den
, st
, st
->parser
, pkt
);
2417 pkt
->duration
= av_rescale_rnd(1,
2418 num
* (int64_t) st
->time_base
.den
,
2419 den
* (int64_t) st
->time_base
.num
,
2423 duration
= pkt
->pts
+ pkt
->duration
;
2425 if (st
->start_time
!= AV_NOPTS_VALUE
)
2426 duration
-= st
->start_time
;
2428 duration
-= st
->first_dts
;
2430 if (st
->duration
== AV_NOPTS_VALUE
|| st
->info
->last_duration
<= 0 ||
2431 (st
->duration
< duration
&& FFABS(duration
- st
->info
->last_duration
) < 60LL*st
->time_base
.den
/ st
->time_base
.num
))
2432 st
->duration
= duration
;
2433 st
->info
->last_duration
= duration
;
2436 av_free_packet(pkt
);
2439 /* check if all audio/video streams have valid duration */
2442 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2443 st
= ic
->streams
[i
];
2444 switch (st
->codec
->codec_type
) {
2445 case AVMEDIA_TYPE_VIDEO
:
2446 case AVMEDIA_TYPE_AUDIO
:
2447 if (st
->duration
== AV_NOPTS_VALUE
)
2454 ++retry
<= DURATION_MAX_RETRY
);
2456 av_opt_set(ic
, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN
);
2458 /* warn about audio/video streams which duration could not be estimated */
2459 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2460 st
= ic
->streams
[i
];
2461 if (st
->duration
== AV_NOPTS_VALUE
) {
2462 switch (st
->codec
->codec_type
) {
2463 case AVMEDIA_TYPE_VIDEO
:
2464 case AVMEDIA_TYPE_AUDIO
:
2465 if (st
->start_time
!= AV_NOPTS_VALUE
|| st
->first_dts
!= AV_NOPTS_VALUE
) {
2466 av_log(ic
, AV_LOG_DEBUG
, "stream %d : no PTS found at end of file, duration not set\n", i
);
2468 av_log(ic
, AV_LOG_DEBUG
, "stream %d : no TS found at start of file, duration not set\n", i
);
2472 fill_all_stream_timings(ic
);
2474 avio_seek(ic
->pb
, old_offset
, SEEK_SET
);
2475 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2478 st
= ic
->streams
[i
];
2479 st
->cur_dts
= st
->first_dts
;
2480 st
->last_IP_pts
= AV_NOPTS_VALUE
;
2481 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
2482 for (j
= 0; j
< MAX_REORDER_DELAY
+ 1; j
++)
2483 st
->pts_buffer
[j
] = AV_NOPTS_VALUE
;
2487 static void estimate_timings(AVFormatContext
*ic
, int64_t old_offset
)
2491 /* get the file size, if possible */
2492 if (ic
->iformat
->flags
& AVFMT_NOFILE
) {
2495 file_size
= avio_size(ic
->pb
);
2496 file_size
= FFMAX(0, file_size
);
2499 if ((!strcmp(ic
->iformat
->name
, "mpeg") ||
2500 !strcmp(ic
->iformat
->name
, "mpegts")) &&
2501 file_size
&& ic
->pb
->seekable
) {
2502 /* get accurate estimate from the PTSes */
2503 estimate_timings_from_pts(ic
, old_offset
);
2504 ic
->duration_estimation_method
= AVFMT_DURATION_FROM_PTS
;
2505 } else if (has_duration(ic
)) {
2506 /* at least one component has timings - we use them for all
2508 fill_all_stream_timings(ic
);
2509 ic
->duration_estimation_method
= AVFMT_DURATION_FROM_STREAM
;
2511 /* less precise: use bitrate info */
2512 estimate_timings_from_bit_rate(ic
);
2513 ic
->duration_estimation_method
= AVFMT_DURATION_FROM_BITRATE
;
2515 update_stream_timings(ic
);
2519 AVStream av_unused
*st
;
2520 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2521 st
= ic
->streams
[i
];
2522 av_dlog(ic
, "%d: start_time: %0.3f duration: %0.3f\n", i
,
2523 (double) st
->start_time
/ AV_TIME_BASE
,
2524 (double) st
->duration
/ AV_TIME_BASE
);
2527 "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2528 (double) ic
->start_time
/ AV_TIME_BASE
,
2529 (double) ic
->duration
/ AV_TIME_BASE
,
2530 ic
->bit_rate
/ 1000);
2534 static int has_codec_parameters(AVStream
*st
, const char **errmsg_ptr
)
2536 AVCodecContext
*avctx
= st
->codec
;
2538 #define FAIL(errmsg) do { \
2540 *errmsg_ptr = errmsg; \
2544 if ( avctx
->codec_id
== AV_CODEC_ID_NONE
2545 && avctx
->codec_type
!= AVMEDIA_TYPE_DATA
)
2546 FAIL("unknown codec");
2547 switch (avctx
->codec_type
) {
2548 case AVMEDIA_TYPE_AUDIO
:
2549 if (!avctx
->frame_size
&& determinable_frame_size(avctx
))
2550 FAIL("unspecified frame size");
2551 if (st
->info
->found_decoder
>= 0 &&
2552 avctx
->sample_fmt
== AV_SAMPLE_FMT_NONE
)
2553 FAIL("unspecified sample format");
2554 if (!avctx
->sample_rate
)
2555 FAIL("unspecified sample rate");
2556 if (!avctx
->channels
)
2557 FAIL("unspecified number of channels");
2558 if (st
->info
->found_decoder
>= 0 && !st
->nb_decoded_frames
&& avctx
->codec_id
== AV_CODEC_ID_DTS
)
2559 FAIL("no decodable DTS frames");
2561 case AVMEDIA_TYPE_VIDEO
:
2563 FAIL("unspecified size");
2564 if (st
->info
->found_decoder
>= 0 && avctx
->pix_fmt
== AV_PIX_FMT_NONE
)
2565 FAIL("unspecified pixel format");
2566 if (st
->codec
->codec_id
== AV_CODEC_ID_RV30
|| st
->codec
->codec_id
== AV_CODEC_ID_RV40
)
2567 if (!st
->sample_aspect_ratio
.num
&& !st
->codec
->sample_aspect_ratio
.num
&& !st
->codec_info_nb_frames
)
2568 FAIL("no frame in rv30/40 and no sar");
2570 case AVMEDIA_TYPE_SUBTITLE
:
2571 if (avctx
->codec_id
== AV_CODEC_ID_HDMV_PGS_SUBTITLE
&& !avctx
->width
)
2572 FAIL("unspecified size");
2574 case AVMEDIA_TYPE_DATA
:
2575 if (avctx
->codec_id
== AV_CODEC_ID_NONE
) return 1;
2581 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2582 static int try_decode_frame(AVFormatContext
*s
, AVStream
*st
, AVPacket
*avpkt
,
2583 AVDictionary
**options
)
2585 const AVCodec
*codec
;
2586 int got_picture
= 1, ret
= 0;
2587 AVFrame
*frame
= av_frame_alloc();
2588 AVSubtitle subtitle
;
2589 AVPacket pkt
= *avpkt
;
2592 return AVERROR(ENOMEM
);
2594 if (!avcodec_is_open(st
->codec
) &&
2595 st
->info
->found_decoder
<= 0 &&
2596 (st
->codec
->codec_id
!= -st
->info
->found_decoder
|| !st
->codec
->codec_id
)) {
2597 AVDictionary
*thread_opt
= NULL
;
2599 codec
= find_decoder(s
, st
, st
->codec
->codec_id
);
2602 st
->info
->found_decoder
= -st
->codec
->codec_id
;
2607 /* Force thread count to 1 since the H.264 decoder will not extract
2608 * SPS and PPS to extradata during multi-threaded decoding. */
2609 av_dict_set(options
? options
: &thread_opt
, "threads", "1", 0);
2610 if (s
->codec_whitelist
)
2611 av_dict_set(options
? options
: &thread_opt
, "codec_whitelist", s
->codec_whitelist
, 0);
2612 ret
= avcodec_open2(st
->codec
, codec
, options
? options
: &thread_opt
);
2614 av_dict_free(&thread_opt
);
2616 st
->info
->found_decoder
= -st
->codec
->codec_id
;
2619 st
->info
->found_decoder
= 1;
2620 } else if (!st
->info
->found_decoder
)
2621 st
->info
->found_decoder
= 1;
2623 if (st
->info
->found_decoder
< 0) {
2628 while ((pkt
.size
> 0 || (!pkt
.data
&& got_picture
)) &&
2630 (!has_codec_parameters(st
, NULL
) || !has_decode_delay_been_guessed(st
) ||
2631 (!st
->codec_info_nb_frames
&&
2632 st
->codec
->codec
->capabilities
& CODEC_CAP_CHANNEL_CONF
))) {
2634 switch (st
->codec
->codec_type
) {
2635 case AVMEDIA_TYPE_VIDEO
:
2636 ret
= avcodec_decode_video2(st
->codec
, frame
,
2637 &got_picture
, &pkt
);
2639 case AVMEDIA_TYPE_AUDIO
:
2640 ret
= avcodec_decode_audio4(st
->codec
, frame
, &got_picture
, &pkt
);
2642 case AVMEDIA_TYPE_SUBTITLE
:
2643 ret
= avcodec_decode_subtitle2(st
->codec
, &subtitle
,
2644 &got_picture
, &pkt
);
2652 st
->nb_decoded_frames
++;
2659 if (!pkt
.data
&& !got_picture
)
2663 av_frame_free(&frame
);
2667 unsigned int ff_codec_get_tag(const AVCodecTag
*tags
, enum AVCodecID id
)
2669 while (tags
->id
!= AV_CODEC_ID_NONE
) {
2677 enum AVCodecID
ff_codec_get_id(const AVCodecTag
*tags
, unsigned int tag
)
2680 for (i
= 0; tags
[i
].id
!= AV_CODEC_ID_NONE
; i
++)
2681 if (tag
== tags
[i
].tag
)
2683 for (i
= 0; tags
[i
].id
!= AV_CODEC_ID_NONE
; i
++)
2684 if (avpriv_toupper4(tag
) == avpriv_toupper4(tags
[i
].tag
))
2686 return AV_CODEC_ID_NONE
;
2689 enum AVCodecID
ff_get_pcm_codec_id(int bps
, int flt
, int be
, int sflags
)
2694 return be
? AV_CODEC_ID_PCM_F32BE
: AV_CODEC_ID_PCM_F32LE
;
2696 return be
? AV_CODEC_ID_PCM_F64BE
: AV_CODEC_ID_PCM_F64LE
;
2698 return AV_CODEC_ID_NONE
;
2703 if (sflags
& (1 << (bps
- 1))) {
2706 return AV_CODEC_ID_PCM_S8
;
2708 return be
? AV_CODEC_ID_PCM_S16BE
: AV_CODEC_ID_PCM_S16LE
;
2710 return be
? AV_CODEC_ID_PCM_S24BE
: AV_CODEC_ID_PCM_S24LE
;
2712 return be
? AV_CODEC_ID_PCM_S32BE
: AV_CODEC_ID_PCM_S32LE
;
2714 return AV_CODEC_ID_NONE
;
2719 return AV_CODEC_ID_PCM_U8
;
2721 return be
? AV_CODEC_ID_PCM_U16BE
: AV_CODEC_ID_PCM_U16LE
;
2723 return be
? AV_CODEC_ID_PCM_U24BE
: AV_CODEC_ID_PCM_U24LE
;
2725 return be
? AV_CODEC_ID_PCM_U32BE
: AV_CODEC_ID_PCM_U32LE
;
2727 return AV_CODEC_ID_NONE
;
2733 unsigned int av_codec_get_tag(const AVCodecTag
*const *tags
, enum AVCodecID id
)
2736 if (!av_codec_get_tag2(tags
, id
, &tag
))
2741 int av_codec_get_tag2(const AVCodecTag
* const *tags
, enum AVCodecID id
,
2745 for (i
= 0; tags
&& tags
[i
]; i
++) {
2746 const AVCodecTag
*codec_tags
= tags
[i
];
2747 while (codec_tags
->id
!= AV_CODEC_ID_NONE
) {
2748 if (codec_tags
->id
== id
) {
2749 *tag
= codec_tags
->tag
;
2758 enum AVCodecID
av_codec_get_id(const AVCodecTag
*const *tags
, unsigned int tag
)
2761 for (i
= 0; tags
&& tags
[i
]; i
++) {
2762 enum AVCodecID id
= ff_codec_get_id(tags
[i
], tag
);
2763 if (id
!= AV_CODEC_ID_NONE
)
2766 return AV_CODEC_ID_NONE
;
2769 static void compute_chapters_end(AVFormatContext
*s
)
2772 int64_t max_time
= s
->duration
+
2773 ((s
->start_time
== AV_NOPTS_VALUE
) ? 0 : s
->start_time
);
2775 for (i
= 0; i
< s
->nb_chapters
; i
++)
2776 if (s
->chapters
[i
]->end
== AV_NOPTS_VALUE
) {
2777 AVChapter
*ch
= s
->chapters
[i
];
2778 int64_t end
= max_time
? av_rescale_q(max_time
, AV_TIME_BASE_Q
,
2782 for (j
= 0; j
< s
->nb_chapters
; j
++) {
2783 AVChapter
*ch1
= s
->chapters
[j
];
2784 int64_t next_start
= av_rescale_q(ch1
->start
, ch1
->time_base
,
2786 if (j
!= i
&& next_start
> ch
->start
&& next_start
< end
)
2789 ch
->end
= (end
== INT64_MAX
) ? ch
->start
: end
;
2793 static int get_std_framerate(int i
)
2796 return (i
+ 1) * 1001;
2800 return ((const int[]) { 40, 48, 50, 60, 80, 120, 240})[i
] * 1001 * 12;
2804 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i
] * 1000 * 12;
2807 /* Is the time base unreliable?
2808 * This is a heuristic to balance between quick acceptance of the values in
2809 * the headers vs. some extra checks.
2810 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2811 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2812 * And there are "variable" fps files this needs to detect as well. */
2813 static int tb_unreliable(AVCodecContext
*c
)
2815 if (c
->time_base
.den
>= 101L * c
->time_base
.num
||
2816 c
->time_base
.den
< 5L * c
->time_base
.num
||
2817 // c->codec_tag == AV_RL32("DIVX") ||
2818 // c->codec_tag == AV_RL32("XVID") ||
2819 c
->codec_tag
== AV_RL32("mp4v") ||
2820 c
->codec_id
== AV_CODEC_ID_MPEG2VIDEO
||
2821 c
->codec_id
== AV_CODEC_ID_GIF
||
2822 c
->codec_id
== AV_CODEC_ID_H264
)
2827 int ff_alloc_extradata(AVCodecContext
*avctx
, int size
)
2831 if (size
< 0 || size
>= INT32_MAX
- FF_INPUT_BUFFER_PADDING_SIZE
) {
2832 avctx
->extradata
= NULL
;
2833 avctx
->extradata_size
= 0;
2834 return AVERROR(EINVAL
);
2836 avctx
->extradata
= av_malloc(size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
2837 if (avctx
->extradata
) {
2838 memset(avctx
->extradata
+ size
, 0, FF_INPUT_BUFFER_PADDING_SIZE
);
2839 avctx
->extradata_size
= size
;
2842 avctx
->extradata_size
= 0;
2843 ret
= AVERROR(ENOMEM
);
2848 int ff_get_extradata(AVCodecContext
*avctx
, AVIOContext
*pb
, int size
)
2850 int ret
= ff_alloc_extradata(avctx
, size
);
2853 ret
= avio_read(pb
, avctx
->extradata
, size
);
2855 av_freep(&avctx
->extradata
);
2856 avctx
->extradata_size
= 0;
2857 av_log(avctx
, AV_LOG_ERROR
, "Failed to read extradata of size %d\n", size
);
2858 return ret
< 0 ? ret
: AVERROR_INVALIDDATA
;
2864 int ff_rfps_add_frame(AVFormatContext
*ic
, AVStream
*st
, int64_t ts
)
2867 int64_t last
= st
->info
->last_dts
;
2869 if ( ts
!= AV_NOPTS_VALUE
&& last
!= AV_NOPTS_VALUE
&& ts
> last
2870 && ts
- (uint64_t)last
< INT64_MAX
) {
2871 double dts
= (is_relative(ts
) ? ts
- RELATIVE_TS_BASE
: ts
) * av_q2d(st
->time_base
);
2872 int64_t duration
= ts
- last
;
2874 if (!st
->info
->duration_error
)
2875 st
->info
->duration_error
= av_mallocz(sizeof(st
->info
->duration_error
[0])*2);
2876 if (!st
->info
->duration_error
)
2877 return AVERROR(ENOMEM
);
2879 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2880 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2881 for (i
= 0; i
<MAX_STD_TIMEBASES
; i
++) {
2882 if (st
->info
->duration_error
[0][1][i
] < 1e10
) {
2883 int framerate
= get_std_framerate(i
);
2884 double sdts
= dts
*framerate
/(1001*12);
2885 for (j
= 0; j
<2; j
++) {
2886 int64_t ticks
= llrint(sdts
+j
*0.5);
2887 double error
= sdts
- ticks
+ j
*0.5;
2888 st
->info
->duration_error
[j
][0][i
] += error
;
2889 st
->info
->duration_error
[j
][1][i
] += error
*error
;
2893 st
->info
->duration_count
++;
2894 st
->info
->rfps_duration_sum
+= duration
;
2896 if (st
->info
->duration_count
% 10 == 0) {
2897 int n
= st
->info
->duration_count
;
2898 for (i
= 0; i
<MAX_STD_TIMEBASES
; i
++) {
2899 if (st
->info
->duration_error
[0][1][i
] < 1e10
) {
2900 double a0
= st
->info
->duration_error
[0][0][i
] / n
;
2901 double error0
= st
->info
->duration_error
[0][1][i
] / n
- a0
*a0
;
2902 double a1
= st
->info
->duration_error
[1][0][i
] / n
;
2903 double error1
= st
->info
->duration_error
[1][1][i
] / n
- a1
*a1
;
2904 if (error0
> 0.04 && error1
> 0.04) {
2905 st
->info
->duration_error
[0][1][i
] = 2e10
;
2906 st
->info
->duration_error
[1][1][i
] = 2e10
;
2912 // ignore the first 4 values, they might have some random jitter
2913 if (st
->info
->duration_count
> 3 && is_relative(ts
) == is_relative(last
))
2914 st
->info
->duration_gcd
= av_gcd(st
->info
->duration_gcd
, duration
);
2916 if (ts
!= AV_NOPTS_VALUE
)
2917 st
->info
->last_dts
= ts
;
2922 void ff_rfps_calculate(AVFormatContext
*ic
)
2926 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2927 AVStream
*st
= ic
->streams
[i
];
2929 if (st
->codec
->codec_type
!= AVMEDIA_TYPE_VIDEO
)
2931 // the check for tb_unreliable() is not completely correct, since this is not about handling
2932 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2933 // ipmovie.c produces.
2934 if (tb_unreliable(st
->codec
) && st
->info
->duration_count
> 15 && st
->info
->duration_gcd
> FFMAX(1, st
->time_base
.den
/(500LL*st
->time_base
.num
)) && !st
->r_frame_rate
.num
)
2935 av_reduce(&st
->r_frame_rate
.num
, &st
->r_frame_rate
.den
, st
->time_base
.den
, st
->time_base
.num
* st
->info
->duration_gcd
, INT_MAX
);
2936 if (st
->info
->duration_count
>1 && !st
->r_frame_rate
.num
2937 && tb_unreliable(st
->codec
)) {
2939 double best_error
= 0.01;
2940 AVRational ref_rate
= st
->r_frame_rate
.num
? st
->r_frame_rate
: av_inv_q(st
->time_base
);
2942 for (j
= 0; j
<MAX_STD_TIMEBASES
; j
++) {
2945 if (st
->info
->codec_info_duration
&& st
->info
->codec_info_duration
*av_q2d(st
->time_base
) < (1001*12.0)/get_std_framerate(j
))
2947 if (!st
->info
->codec_info_duration
&& 1.0 < (1001*12.0)/get_std_framerate(j
))
2950 if (av_q2d(st
->time_base
) * st
->info
->rfps_duration_sum
/ st
->info
->duration_count
< (1001*12.0 * 0.8)/get_std_framerate(j
))
2953 for (k
= 0; k
<2; k
++) {
2954 int n
= st
->info
->duration_count
;
2955 double a
= st
->info
->duration_error
[k
][0][j
] / n
;
2956 double error
= st
->info
->duration_error
[k
][1][j
]/n
- a
*a
;
2958 if (error
< best_error
&& best_error
> 0.000000001) {
2960 num
= get_std_framerate(j
);
2963 av_log(NULL
, AV_LOG_DEBUG
, "rfps: %f %f\n", get_std_framerate(j
) / 12.0/1001, error
);
2966 // do not increase frame rate by more than 1 % in order to match a standard rate.
2967 if (num
&& (!ref_rate
.num
|| (double)num
/(12*1001) < 1.01 * av_q2d(ref_rate
)))
2968 av_reduce(&st
->r_frame_rate
.num
, &st
->r_frame_rate
.den
, num
, 12*1001, INT_MAX
);
2970 if ( !st
->avg_frame_rate
.num
2971 && st
->r_frame_rate
.num
&& st
->info
->rfps_duration_sum
2972 && st
->info
->codec_info_duration
<= 0
2973 && st
->info
->duration_count
> 2
2974 && fabs(1.0 / (av_q2d(st
->r_frame_rate
) * av_q2d(st
->time_base
)) - st
->info
->rfps_duration_sum
/ (double)st
->info
->duration_count
) <= 1.0
2976 av_log(ic
, AV_LOG_DEBUG
, "Setting avg frame rate based on r frame rate\n");
2977 st
->avg_frame_rate
= st
->r_frame_rate
;
2980 av_freep(&st
->info
->duration_error
);
2981 st
->info
->last_dts
= AV_NOPTS_VALUE
;
2982 st
->info
->duration_count
= 0;
2983 st
->info
->rfps_duration_sum
= 0;
2987 int avformat_find_stream_info(AVFormatContext
*ic
, AVDictionary
**options
)
2989 int i
, count
, ret
= 0, j
;
2992 AVPacket pkt1
, *pkt
;
2993 int64_t old_offset
= avio_tell(ic
->pb
);
2994 // new streams might appear, no options for those
2995 int orig_nb_streams
= ic
->nb_streams
;
2997 int64_t max_analyze_duration
= ic
->max_analyze_duration2
;
2998 int64_t max_stream_analyze_duration
;
2999 int64_t probesize
= ic
->probesize2
;
3001 if (!max_analyze_duration
)
3002 max_analyze_duration
= ic
->max_analyze_duration
;
3004 probesize
= ic
->probesize
;
3005 flush_codecs
= probesize
> 0;
3007 av_opt_set(ic
, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN
);
3009 max_stream_analyze_duration
= max_analyze_duration
;
3010 if (!max_analyze_duration
) {
3011 max_stream_analyze_duration
=
3012 max_analyze_duration
= 5*AV_TIME_BASE
;
3013 if (!strcmp(ic
->iformat
->name
, "flv"))
3014 max_stream_analyze_duration
= 30*AV_TIME_BASE
;
3018 av_log(ic
, AV_LOG_DEBUG
, "Before avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d\n",
3019 avio_tell(ic
->pb
), ic
->pb
->bytes_read
, ic
->pb
->seek_count
);
3021 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3022 const AVCodec
*codec
;
3023 AVDictionary
*thread_opt
= NULL
;
3024 st
= ic
->streams
[i
];
3026 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
||
3027 st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
) {
3028 /* if (!st->time_base.num)
3030 if (!st
->codec
->time_base
.num
)
3031 st
->codec
->time_base
= st
->time_base
;
3033 // only for the split stuff
3034 if (!st
->parser
&& !(ic
->flags
& AVFMT_FLAG_NOPARSE
)) {
3035 st
->parser
= av_parser_init(st
->codec
->codec_id
);
3037 if (st
->need_parsing
== AVSTREAM_PARSE_HEADERS
) {
3038 st
->parser
->flags
|= PARSER_FLAG_COMPLETE_FRAMES
;
3039 } else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
) {
3040 st
->parser
->flags
|= PARSER_FLAG_USE_CODEC_TS
;
3042 } else if (st
->need_parsing
) {
3043 av_log(ic
, AV_LOG_VERBOSE
, "parser not found for codec "
3044 "%s, packets or times may be invalid.\n",
3045 avcodec_get_name(st
->codec
->codec_id
));
3048 codec
= find_decoder(ic
, st
, st
->codec
->codec_id
);
3050 /* Force thread count to 1 since the H.264 decoder will not extract
3051 * SPS and PPS to extradata during multi-threaded decoding. */
3052 av_dict_set(options
? &options
[i
] : &thread_opt
, "threads", "1", 0);
3054 if (ic
->codec_whitelist
)
3055 av_dict_set(options
? &options
[i
] : &thread_opt
, "codec_whitelist", ic
->codec_whitelist
, 0);
3057 /* Ensure that subtitle_header is properly set. */
3058 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
3059 && codec
&& !st
->codec
->codec
) {
3060 if (avcodec_open2(st
->codec
, codec
, options
? &options
[i
] : &thread_opt
) < 0)
3061 av_log(ic
, AV_LOG_WARNING
,
3062 "Failed to open codec in av_find_stream_info\n");
3065 // Try to just open decoders, in case this is enough to get parameters.
3066 if (!has_codec_parameters(st
, NULL
) && st
->request_probe
<= 0) {
3067 if (codec
&& !st
->codec
->codec
)
3068 if (avcodec_open2(st
->codec
, codec
, options
? &options
[i
] : &thread_opt
) < 0)
3069 av_log(ic
, AV_LOG_WARNING
,
3070 "Failed to open codec in av_find_stream_info\n");
3073 av_dict_free(&thread_opt
);
3076 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3077 #if FF_API_R_FRAME_RATE
3078 ic
->streams
[i
]->info
->last_dts
= AV_NOPTS_VALUE
;
3080 ic
->streams
[i
]->info
->fps_first_dts
= AV_NOPTS_VALUE
;
3081 ic
->streams
[i
]->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3087 int analyzed_all_streams
;
3088 if (ff_check_interrupt(&ic
->interrupt_callback
)) {
3090 av_log(ic
, AV_LOG_DEBUG
, "interrupted\n");
3094 /* check if one codec still needs to be handled */
3095 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3096 int fps_analyze_framecount
= 20;
3098 st
= ic
->streams
[i
];
3099 if (!has_codec_parameters(st
, NULL
))
3101 /* If the timebase is coarse (like the usual millisecond precision
3102 * of mkv), we need to analyze more frames to reliably arrive at
3103 * the correct fps. */
3104 if (av_q2d(st
->time_base
) > 0.0005)
3105 fps_analyze_framecount
*= 2;
3106 if (!tb_unreliable(st
->codec
))
3107 fps_analyze_framecount
= 0;
3108 if (ic
->fps_probe_size
>= 0)
3109 fps_analyze_framecount
= ic
->fps_probe_size
;
3110 if (st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
)
3111 fps_analyze_framecount
= 0;
3112 /* variable fps and no guess at the real fps */
3113 if (!(st
->r_frame_rate
.num
&& st
->avg_frame_rate
.num
) &&
3114 st
->info
->duration_count
< fps_analyze_framecount
&&
3115 st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)
3117 if (st
->parser
&& st
->parser
->parser
->split
&&
3118 !st
->codec
->extradata
)
3120 if (st
->first_dts
== AV_NOPTS_VALUE
&&
3121 !(ic
->iformat
->flags
& AVFMT_NOTIMESTAMPS
) &&
3122 st
->codec_info_nb_frames
< ic
->max_ts_probe
&&
3123 (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
||
3124 st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
))
3127 analyzed_all_streams
= 0;
3128 if (i
== ic
->nb_streams
) {
3129 analyzed_all_streams
= 1;
3130 /* NOTE: If the format has no header, then we need to read some
3131 * packets to get most of the streams, so we cannot stop here. */
3132 if (!(ic
->ctx_flags
& AVFMTCTX_NOHEADER
)) {
3133 /* If we found the info for all the codecs, we can stop. */
3135 av_log(ic
, AV_LOG_DEBUG
, "All info found\n");
3140 /* We did not get all the codec info, but we read too much data. */
3141 if (read_size
>= probesize
) {
3143 av_log(ic
, AV_LOG_DEBUG
,
3144 "Probe buffer size limit of %"PRId64
" bytes reached\n", probesize
);
3145 for (i
= 0; i
< ic
->nb_streams
; i
++)
3146 if (!ic
->streams
[i
]->r_frame_rate
.num
&&
3147 ic
->streams
[i
]->info
->duration_count
<= 1 &&
3148 ic
->streams
[i
]->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
3149 strcmp(ic
->iformat
->name
, "image2"))
3150 av_log(ic
, AV_LOG_WARNING
,
3151 "Stream #%d: not enough frames to estimate rate; "
3152 "consider increasing probesize\n", i
);
3156 /* NOTE: A new stream can be added there if no header in file
3157 * (AVFMTCTX_NOHEADER). */
3158 ret
= read_frame_internal(ic
, &pkt1
);
3159 if (ret
== AVERROR(EAGAIN
))
3167 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3168 free_packet_buffer(&ic
->packet_buffer
, &ic
->packet_buffer_end
);
3170 pkt
= add_to_pktbuf(&ic
->packet_buffer
, &pkt1
,
3171 &ic
->packet_buffer_end
);
3173 ret
= AVERROR(ENOMEM
);
3174 goto find_stream_info_err
;
3176 if ((ret
= av_dup_packet(pkt
)) < 0)
3177 goto find_stream_info_err
;
3180 st
= ic
->streams
[pkt
->stream_index
];
3181 if (!(st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
))
3182 read_size
+= pkt
->size
;
3184 if (pkt
->dts
!= AV_NOPTS_VALUE
&& st
->codec_info_nb_frames
> 1) {
3185 /* check for non-increasing dts */
3186 if (st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
&&
3187 st
->info
->fps_last_dts
>= pkt
->dts
) {
3188 av_log(ic
, AV_LOG_DEBUG
,
3189 "Non-increasing DTS in stream %d: packet %d with DTS "
3190 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3191 st
->index
, st
->info
->fps_last_dts_idx
,
3192 st
->info
->fps_last_dts
, st
->codec_info_nb_frames
,
3194 st
->info
->fps_first_dts
=
3195 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3197 /* Check for a discontinuity in dts. If the difference in dts
3198 * is more than 1000 times the average packet duration in the
3199 * sequence, we treat it as a discontinuity. */
3200 if (st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
&&
3201 st
->info
->fps_last_dts_idx
> st
->info
->fps_first_dts_idx
&&
3202 (pkt
->dts
- st
->info
->fps_last_dts
) / 1000 >
3203 (st
->info
->fps_last_dts
- st
->info
->fps_first_dts
) /
3204 (st
->info
->fps_last_dts_idx
- st
->info
->fps_first_dts_idx
)) {
3205 av_log(ic
, AV_LOG_WARNING
,
3206 "DTS discontinuity in stream %d: packet %d with DTS "
3207 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3208 st
->index
, st
->info
->fps_last_dts_idx
,
3209 st
->info
->fps_last_dts
, st
->codec_info_nb_frames
,
3211 st
->info
->fps_first_dts
=
3212 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3215 /* update stored dts values */
3216 if (st
->info
->fps_first_dts
== AV_NOPTS_VALUE
) {
3217 st
->info
->fps_first_dts
= pkt
->dts
;
3218 st
->info
->fps_first_dts_idx
= st
->codec_info_nb_frames
;
3220 st
->info
->fps_last_dts
= pkt
->dts
;
3221 st
->info
->fps_last_dts_idx
= st
->codec_info_nb_frames
;
3223 if (st
->codec_info_nb_frames
>1) {
3226 if (st
->time_base
.den
> 0)
3227 t
= av_rescale_q(st
->info
->codec_info_duration
, st
->time_base
, AV_TIME_BASE_Q
);
3228 if (st
->avg_frame_rate
.num
> 0)
3229 t
= FFMAX(t
, av_rescale_q(st
->codec_info_nb_frames
, av_inv_q(st
->avg_frame_rate
), AV_TIME_BASE_Q
));
3232 && st
->codec_info_nb_frames
>30
3233 && st
->info
->fps_first_dts
!= AV_NOPTS_VALUE
3234 && st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
)
3235 t
= FFMAX(t
, av_rescale_q(st
->info
->fps_last_dts
- st
->info
->fps_first_dts
, st
->time_base
, AV_TIME_BASE_Q
));
3237 if (t
>= (analyzed_all_streams
? max_analyze_duration
: max_stream_analyze_duration
)) {
3238 av_log(ic
, AV_LOG_VERBOSE
, "max_analyze_duration %"PRId64
" reached at %"PRId64
" microseconds\n",
3239 max_analyze_duration
,
3241 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3242 av_packet_unref(pkt
);
3245 if (pkt
->duration
) {
3246 st
->info
->codec_info_duration
+= pkt
->duration
;
3247 st
->info
->codec_info_duration_fields
+= st
->parser
&& st
->need_parsing
&& st
->codec
->ticks_per_frame
==2 ? st
->parser
->repeat_pict
+ 1 : 2;
3250 #if FF_API_R_FRAME_RATE
3251 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)
3252 ff_rfps_add_frame(ic
, st
, pkt
->dts
);
3254 if (st
->parser
&& st
->parser
->parser
->split
&& !st
->codec
->extradata
) {
3255 int i
= st
->parser
->parser
->split(st
->codec
, pkt
->data
, pkt
->size
);
3256 if (i
> 0 && i
< FF_MAX_EXTRADATA_SIZE
) {
3257 if (ff_alloc_extradata(st
->codec
, i
))
3258 return AVERROR(ENOMEM
);
3259 memcpy(st
->codec
->extradata
, pkt
->data
,
3260 st
->codec
->extradata_size
);
3264 /* If still no information, we try to open the codec and to
3265 * decompress the frame. We try to avoid that in most cases as
3266 * it takes longer and uses more memory. For MPEG-4, we need to
3267 * decompress for QuickTime.
3269 * If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3270 * least one frame of codec data, this makes sure the codec initializes
3271 * the channel configuration and does not only trust the values from
3273 try_decode_frame(ic
, st
, pkt
,
3274 (options
&& i
< orig_nb_streams
) ? &options
[i
] : NULL
);
3276 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3277 av_packet_unref(pkt
);
3279 st
->codec_info_nb_frames
++;
3284 AVPacket empty_pkt
= { 0 };
3286 av_init_packet(&empty_pkt
);
3288 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3290 st
= ic
->streams
[i
];
3292 /* flush the decoders */
3293 if (st
->info
->found_decoder
== 1) {
3295 err
= try_decode_frame(ic
, st
, &empty_pkt
,
3296 (options
&& i
< orig_nb_streams
)
3297 ? &options
[i
] : NULL
);
3298 } while (err
> 0 && !has_codec_parameters(st
, NULL
));
3301 av_log(ic
, AV_LOG_INFO
,
3302 "decoding for stream %d failed\n", st
->index
);
3308 // close codecs which were opened in try_decode_frame()
3309 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3310 st
= ic
->streams
[i
];
3311 avcodec_close(st
->codec
);
3314 ff_rfps_calculate(ic
);
3316 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3317 st
= ic
->streams
[i
];
3318 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
3319 if (st
->codec
->codec_id
== AV_CODEC_ID_RAWVIDEO
&& !st
->codec
->codec_tag
&& !st
->codec
->bits_per_coded_sample
) {
3320 uint32_t tag
= avcodec_pix_fmt_to_codec_tag(st
->codec
->pix_fmt
);
3321 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag
) == st
->codec
->pix_fmt
)
3322 st
->codec
->codec_tag
= tag
;
3325 /* estimate average framerate if not set by demuxer */
3326 if (st
->info
->codec_info_duration_fields
&&
3327 !st
->avg_frame_rate
.num
&&
3328 st
->info
->codec_info_duration
) {
3330 double best_error
= 0.01;
3332 if (st
->info
->codec_info_duration
>= INT64_MAX
/ st
->time_base
.num
/ 2||
3333 st
->info
->codec_info_duration_fields
>= INT64_MAX
/ st
->time_base
.den
||
3334 st
->info
->codec_info_duration
< 0)
3336 av_reduce(&st
->avg_frame_rate
.num
, &st
->avg_frame_rate
.den
,
3337 st
->info
->codec_info_duration_fields
* (int64_t) st
->time_base
.den
,
3338 st
->info
->codec_info_duration
* 2 * (int64_t) st
->time_base
.num
, 60000);
3340 /* Round guessed framerate to a "standard" framerate if it's
3341 * within 1% of the original estimate. */
3342 for (j
= 0; j
< MAX_STD_TIMEBASES
; j
++) {
3343 AVRational std_fps
= { get_std_framerate(j
), 12 * 1001 };
3344 double error
= fabs(av_q2d(st
->avg_frame_rate
) /
3345 av_q2d(std_fps
) - 1);
3347 if (error
< best_error
) {
3349 best_fps
= std_fps
.num
;
3353 av_reduce(&st
->avg_frame_rate
.num
, &st
->avg_frame_rate
.den
,
3354 best_fps
, 12 * 1001, INT_MAX
);
3357 if (!st
->r_frame_rate
.num
) {
3358 if ( st
->codec
->time_base
.den
* (int64_t) st
->time_base
.num
3359 <= st
->codec
->time_base
.num
* st
->codec
->ticks_per_frame
* (int64_t) st
->time_base
.den
) {
3360 st
->r_frame_rate
.num
= st
->codec
->time_base
.den
;
3361 st
->r_frame_rate
.den
= st
->codec
->time_base
.num
* st
->codec
->ticks_per_frame
;
3363 st
->r_frame_rate
.num
= st
->time_base
.den
;
3364 st
->r_frame_rate
.den
= st
->time_base
.num
;
3367 if (st
->display_aspect_ratio
.num
&& st
->display_aspect_ratio
.den
) {
3368 AVRational hw_ratio
= { st
->codec
->height
, st
->codec
->width
};
3369 st
->sample_aspect_ratio
= av_mul_q(st
->display_aspect_ratio
,
3372 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
3373 if (!st
->codec
->bits_per_coded_sample
)
3374 st
->codec
->bits_per_coded_sample
=
3375 av_get_bits_per_sample(st
->codec
->codec_id
);
3376 // set stream disposition based on audio service type
3377 switch (st
->codec
->audio_service_type
) {
3378 case AV_AUDIO_SERVICE_TYPE_EFFECTS
:
3379 st
->disposition
= AV_DISPOSITION_CLEAN_EFFECTS
;
3381 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED
:
3382 st
->disposition
= AV_DISPOSITION_VISUAL_IMPAIRED
;
3384 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED
:
3385 st
->disposition
= AV_DISPOSITION_HEARING_IMPAIRED
;
3387 case AV_AUDIO_SERVICE_TYPE_COMMENTARY
:
3388 st
->disposition
= AV_DISPOSITION_COMMENT
;
3390 case AV_AUDIO_SERVICE_TYPE_KARAOKE
:
3391 st
->disposition
= AV_DISPOSITION_KARAOKE
;
3398 estimate_timings(ic
, old_offset
);
3400 av_opt_set(ic
, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN
);
3402 if (ret
>= 0 && ic
->nb_streams
)
3403 /* We could not have all the codec parameters before EOF. */
3405 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3407 st
= ic
->streams
[i
];
3408 if (!has_codec_parameters(st
, &errmsg
)) {
3410 avcodec_string(buf
, sizeof(buf
), st
->codec
, 0);
3411 av_log(ic
, AV_LOG_WARNING
,
3412 "Could not find codec parameters for stream %d (%s): %s\n"
3413 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3420 compute_chapters_end(ic
);
3422 find_stream_info_err
:
3423 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3424 st
= ic
->streams
[i
];
3425 if (ic
->streams
[i
]->codec
->codec_type
!= AVMEDIA_TYPE_AUDIO
)
3426 ic
->streams
[i
]->codec
->thread_count
= 0;
3428 av_freep(&st
->info
->duration_error
);
3429 av_freep(&ic
->streams
[i
]->info
);
3432 av_log(ic
, AV_LOG_DEBUG
, "After avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d frames:%d\n",
3433 avio_tell(ic
->pb
), ic
->pb
->bytes_read
, ic
->pb
->seek_count
, count
);
3437 AVProgram
*av_find_program_from_stream(AVFormatContext
*ic
, AVProgram
*last
, int s
)
3441 for (i
= 0; i
< ic
->nb_programs
; i
++) {
3442 if (ic
->programs
[i
] == last
) {
3446 for (j
= 0; j
< ic
->programs
[i
]->nb_stream_indexes
; j
++)
3447 if (ic
->programs
[i
]->stream_index
[j
] == s
)
3448 return ic
->programs
[i
];
3454 int av_find_best_stream(AVFormatContext
*ic
, enum AVMediaType type
,
3455 int wanted_stream_nb
, int related_stream
,
3456 AVCodec
**decoder_ret
, int flags
)
3458 int i
, nb_streams
= ic
->nb_streams
;
3459 int ret
= AVERROR_STREAM_NOT_FOUND
, best_count
= -1, best_bitrate
= -1, best_multiframe
= -1, count
, bitrate
, multiframe
;
3460 unsigned *program
= NULL
;
3461 const AVCodec
*decoder
= NULL
, *best_decoder
= NULL
;
3463 if (related_stream
>= 0 && wanted_stream_nb
< 0) {
3464 AVProgram
*p
= av_find_program_from_stream(ic
, NULL
, related_stream
);
3466 program
= p
->stream_index
;
3467 nb_streams
= p
->nb_stream_indexes
;
3470 for (i
= 0; i
< nb_streams
; i
++) {
3471 int real_stream_index
= program
? program
[i
] : i
;
3472 AVStream
*st
= ic
->streams
[real_stream_index
];
3473 AVCodecContext
*avctx
= st
->codec
;
3474 if (avctx
->codec_type
!= type
)
3476 if (wanted_stream_nb
>= 0 && real_stream_index
!= wanted_stream_nb
)
3478 if (wanted_stream_nb
!= real_stream_index
&&
3479 st
->disposition
& (AV_DISPOSITION_HEARING_IMPAIRED
|
3480 AV_DISPOSITION_VISUAL_IMPAIRED
))
3482 if (type
== AVMEDIA_TYPE_AUDIO
&& !avctx
->channels
)
3485 decoder
= find_decoder(ic
, st
, st
->codec
->codec_id
);
3488 ret
= AVERROR_DECODER_NOT_FOUND
;
3492 count
= st
->codec_info_nb_frames
;
3493 bitrate
= avctx
->bit_rate
;
3495 bitrate
= avctx
->rc_max_rate
;
3496 multiframe
= FFMIN(5, count
);
3497 if ((best_multiframe
> multiframe
) ||
3498 (best_multiframe
== multiframe
&& best_bitrate
> bitrate
) ||
3499 (best_multiframe
== multiframe
&& best_bitrate
== bitrate
&& best_count
>= count
))
3502 best_bitrate
= bitrate
;
3503 best_multiframe
= multiframe
;
3504 ret
= real_stream_index
;
3505 best_decoder
= decoder
;
3506 if (program
&& i
== nb_streams
- 1 && ret
< 0) {
3508 nb_streams
= ic
->nb_streams
;
3509 /* no related stream found, try again with everything */
3514 *decoder_ret
= (AVCodec
*)best_decoder
;
3518 /*******************************************************/
3520 int av_read_play(AVFormatContext
*s
)
3522 if (s
->iformat
->read_play
)
3523 return s
->iformat
->read_play(s
);
3525 return avio_pause(s
->pb
, 0);
3526 return AVERROR(ENOSYS
);
3529 int av_read_pause(AVFormatContext
*s
)
3531 if (s
->iformat
->read_pause
)
3532 return s
->iformat
->read_pause(s
);
3534 return avio_pause(s
->pb
, 1);
3535 return AVERROR(ENOSYS
);
3538 void ff_free_stream(AVFormatContext
*s
, AVStream
*st
) {
3540 av_assert0(s
->nb_streams
>0);
3541 av_assert0(s
->streams
[ s
->nb_streams
- 1 ] == st
);
3543 for (j
= 0; j
< st
->nb_side_data
; j
++)
3544 av_freep(&st
->side_data
[j
].data
);
3545 av_freep(&st
->side_data
);
3546 st
->nb_side_data
= 0;
3549 av_parser_close(st
->parser
);
3551 if (st
->attached_pic
.data
)
3552 av_free_packet(&st
->attached_pic
);
3553 av_dict_free(&st
->metadata
);
3554 av_freep(&st
->probe_data
.buf
);
3555 av_freep(&st
->index_entries
);
3556 av_freep(&st
->codec
->extradata
);
3557 av_freep(&st
->codec
->subtitle_header
);
3558 av_freep(&st
->codec
);
3559 av_freep(&st
->priv_data
);
3561 av_freep(&st
->info
->duration_error
);
3562 av_freep(&st
->info
);
3563 av_freep(&st
->recommended_encoder_configuration
);
3564 av_freep(&s
->streams
[ --s
->nb_streams
]);
3567 void avformat_free_context(AVFormatContext
*s
)
3575 if (s
->iformat
&& s
->iformat
->priv_class
&& s
->priv_data
)
3576 av_opt_free(s
->priv_data
);
3577 if (s
->oformat
&& s
->oformat
->priv_class
&& s
->priv_data
)
3578 av_opt_free(s
->priv_data
);
3580 for (i
= s
->nb_streams
- 1; i
>= 0; i
--) {
3581 ff_free_stream(s
, s
->streams
[i
]);
3583 for (i
= s
->nb_programs
- 1; i
>= 0; i
--) {
3584 av_dict_free(&s
->programs
[i
]->metadata
);
3585 av_freep(&s
->programs
[i
]->stream_index
);
3586 av_freep(&s
->programs
[i
]);
3588 av_freep(&s
->programs
);
3589 av_freep(&s
->priv_data
);
3590 while (s
->nb_chapters
--) {
3591 av_dict_free(&s
->chapters
[s
->nb_chapters
]->metadata
);
3592 av_freep(&s
->chapters
[s
->nb_chapters
]);
3594 av_freep(&s
->chapters
);
3595 av_dict_free(&s
->metadata
);
3596 av_freep(&s
->streams
);
3597 av_freep(&s
->internal
);
3598 flush_packet_queue(s
);
3602 void avformat_close_input(AVFormatContext
**ps
)
3613 if ((s
->iformat
&& strcmp(s
->iformat
->name
, "image2") && s
->iformat
->flags
& AVFMT_NOFILE
) ||
3614 (s
->flags
& AVFMT_FLAG_CUSTOM_IO
))
3617 flush_packet_queue(s
);
3620 if (s
->iformat
->read_close
)
3621 s
->iformat
->read_close(s
);
3623 avformat_free_context(s
);
3630 AVStream
*avformat_new_stream(AVFormatContext
*s
, const AVCodec
*c
)
3636 if (s
->nb_streams
>= INT_MAX
/sizeof(*streams
))
3638 streams
= av_realloc_array(s
->streams
, s
->nb_streams
+ 1, sizeof(*streams
));
3641 s
->streams
= streams
;
3643 st
= av_mallocz(sizeof(AVStream
));
3646 if (!(st
->info
= av_mallocz(sizeof(*st
->info
)))) {
3650 st
->info
->last_dts
= AV_NOPTS_VALUE
;
3652 st
->codec
= avcodec_alloc_context3(c
);
3654 /* no default bitrate if decoding */
3655 st
->codec
->bit_rate
= 0;
3657 /* default pts setting is MPEG-like */
3658 avpriv_set_pts_info(st
, 33, 1, 90000);
3661 st
->index
= s
->nb_streams
;
3662 st
->start_time
= AV_NOPTS_VALUE
;
3663 st
->duration
= AV_NOPTS_VALUE
;
3664 /* we set the current DTS to 0 so that formats without any timestamps
3665 * but durations get some timestamps, formats with some unknown
3666 * timestamps have their first few packets buffered and the
3667 * timestamps corrected before they are returned to the user */
3668 st
->cur_dts
= s
->iformat
? RELATIVE_TS_BASE
: 0;
3669 st
->first_dts
= AV_NOPTS_VALUE
;
3670 st
->probe_packets
= MAX_PROBE_PACKETS
;
3671 st
->pts_wrap_reference
= AV_NOPTS_VALUE
;
3672 st
->pts_wrap_behavior
= AV_PTS_WRAP_IGNORE
;
3674 st
->last_IP_pts
= AV_NOPTS_VALUE
;
3675 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
3676 for (i
= 0; i
< MAX_REORDER_DELAY
+ 1; i
++)
3677 st
->pts_buffer
[i
] = AV_NOPTS_VALUE
;
3679 st
->sample_aspect_ratio
= (AVRational
) { 0, 1 };
3681 #if FF_API_R_FRAME_RATE
3682 st
->info
->last_dts
= AV_NOPTS_VALUE
;
3684 st
->info
->fps_first_dts
= AV_NOPTS_VALUE
;
3685 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3687 st
->inject_global_side_data
= s
->internal
->inject_global_side_data
;
3689 s
->streams
[s
->nb_streams
++] = st
;
3693 AVProgram
*av_new_program(AVFormatContext
*ac
, int id
)
3695 AVProgram
*program
= NULL
;
3698 av_dlog(ac
, "new_program: id=0x%04x\n", id
);
3700 for (i
= 0; i
< ac
->nb_programs
; i
++)
3701 if (ac
->programs
[i
]->id
== id
)
3702 program
= ac
->programs
[i
];
3705 program
= av_mallocz(sizeof(AVProgram
));
3708 dynarray_add(&ac
->programs
, &ac
->nb_programs
, program
);
3709 program
->discard
= AVDISCARD_NONE
;
3712 program
->pts_wrap_reference
= AV_NOPTS_VALUE
;
3713 program
->pts_wrap_behavior
= AV_PTS_WRAP_IGNORE
;
3715 program
->start_time
=
3716 program
->end_time
= AV_NOPTS_VALUE
;
3721 AVChapter
*avpriv_new_chapter(AVFormatContext
*s
, int id
, AVRational time_base
,
3722 int64_t start
, int64_t end
, const char *title
)
3724 AVChapter
*chapter
= NULL
;
3727 if (end
!= AV_NOPTS_VALUE
&& start
> end
) {
3728 av_log(s
, AV_LOG_ERROR
, "Chapter end time %"PRId64
" before start %"PRId64
"\n", end
, start
);
3732 for (i
= 0; i
< s
->nb_chapters
; i
++)
3733 if (s
->chapters
[i
]->id
== id
)
3734 chapter
= s
->chapters
[i
];
3737 chapter
= av_mallocz(sizeof(AVChapter
));
3740 dynarray_add(&s
->chapters
, &s
->nb_chapters
, chapter
);
3742 av_dict_set(&chapter
->metadata
, "title", title
, 0);
3744 chapter
->time_base
= time_base
;
3745 chapter
->start
= start
;
3751 void ff_program_add_stream_index(AVFormatContext
*ac
, int progid
, unsigned idx
)
3754 AVProgram
*program
= NULL
;
3757 if (idx
>= ac
->nb_streams
) {
3758 av_log(ac
, AV_LOG_ERROR
, "stream index %d is not valid\n", idx
);
3762 for (i
= 0; i
< ac
->nb_programs
; i
++) {
3763 if (ac
->programs
[i
]->id
!= progid
)
3765 program
= ac
->programs
[i
];
3766 for (j
= 0; j
< program
->nb_stream_indexes
; j
++)
3767 if (program
->stream_index
[j
] == idx
)
3770 tmp
= av_realloc_array(program
->stream_index
, program
->nb_stream_indexes
+1, sizeof(unsigned int));
3773 program
->stream_index
= tmp
;
3774 program
->stream_index
[program
->nb_stream_indexes
++] = idx
;
3779 uint64_t ff_ntp_time(void)
3781 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US
;
3784 int av_get_frame_filename(char *buf
, int buf_size
, const char *path
, int number
)
3787 char *q
, buf1
[20], c
;
3788 int nd
, len
, percentd_found
;
3800 while (av_isdigit(*p
))
3801 nd
= nd
* 10 + *p
++ - '0';
3803 } while (av_isdigit(c
));
3812 snprintf(buf1
, sizeof(buf1
), "%0*d", nd
, number
);
3814 if ((q
- buf
+ len
) > buf_size
- 1)
3816 memcpy(q
, buf1
, len
);
3824 if ((q
- buf
) < buf_size
- 1)
3828 if (!percentd_found
)
3837 void av_url_split(char *proto
, int proto_size
,
3838 char *authorization
, int authorization_size
,
3839 char *hostname
, int hostname_size
,
3840 int *port_ptr
, char *path
, int path_size
, const char *url
)
3842 const char *p
, *ls
, *ls2
, *at
, *at2
, *col
, *brk
;
3848 if (authorization_size
> 0)
3849 authorization
[0] = 0;
3850 if (hostname_size
> 0)
3855 /* parse protocol */
3856 if ((p
= strchr(url
, ':'))) {
3857 av_strlcpy(proto
, url
, FFMIN(proto_size
, p
+ 1 - url
));
3864 /* no protocol means plain filename */
3865 av_strlcpy(path
, url
, path_size
);
3869 /* separate path from hostname */
3870 ls
= strchr(p
, '/');
3871 ls2
= strchr(p
, '?');
3875 ls
= FFMIN(ls
, ls2
);
3877 av_strlcpy(path
, ls
, path_size
);
3879 ls
= &p
[strlen(p
)]; // XXX
3881 /* the rest is hostname, use that to parse auth/port */
3883 /* authorization (user[:pass]@hostname) */
3885 while ((at
= strchr(p
, '@')) && at
< ls
) {
3886 av_strlcpy(authorization
, at2
,
3887 FFMIN(authorization_size
, at
+ 1 - at2
));
3888 p
= at
+ 1; /* skip '@' */
3891 if (*p
== '[' && (brk
= strchr(p
, ']')) && brk
< ls
) {
3893 av_strlcpy(hostname
, p
+ 1,
3894 FFMIN(hostname_size
, brk
- p
));
3895 if (brk
[1] == ':' && port_ptr
)
3896 *port_ptr
= atoi(brk
+ 2);
3897 } else if ((col
= strchr(p
, ':')) && col
< ls
) {
3898 av_strlcpy(hostname
, p
,
3899 FFMIN(col
+ 1 - p
, hostname_size
));
3901 *port_ptr
= atoi(col
+ 1);
3903 av_strlcpy(hostname
, p
,
3904 FFMIN(ls
+ 1 - p
, hostname_size
));
3908 char *ff_data_to_hex(char *buff
, const uint8_t *src
, int s
, int lowercase
)
3911 static const char hex_table_uc
[16] = { '0', '1', '2', '3',
3914 'C', 'D', 'E', 'F' };
3915 static const char hex_table_lc
[16] = { '0', '1', '2', '3',
3918 'c', 'd', 'e', 'f' };
3919 const char *hex_table
= lowercase
? hex_table_lc
: hex_table_uc
;
3921 for (i
= 0; i
< s
; i
++) {
3922 buff
[i
* 2] = hex_table
[src
[i
] >> 4];
3923 buff
[i
* 2 + 1] = hex_table
[src
[i
] & 0xF];
3929 int ff_hex_to_data(uint8_t *data
, const char *p
)
3936 p
+= strspn(p
, SPACE_CHARS
);
3939 c
= av_toupper((unsigned char) *p
++);
3940 if (c
>= '0' && c
<= '9')
3942 else if (c
>= 'A' && c
<= 'F')
3957 void avpriv_set_pts_info(AVStream
*s
, int pts_wrap_bits
,
3958 unsigned int pts_num
, unsigned int pts_den
)
3961 if (av_reduce(&new_tb
.num
, &new_tb
.den
, pts_num
, pts_den
, INT_MAX
)) {
3962 if (new_tb
.num
!= pts_num
)
3963 av_log(NULL
, AV_LOG_DEBUG
,
3964 "st:%d removing common factor %d from timebase\n",
3965 s
->index
, pts_num
/ new_tb
.num
);
3967 av_log(NULL
, AV_LOG_WARNING
,
3968 "st:%d has too large timebase, reducing\n", s
->index
);
3970 if (new_tb
.num
<= 0 || new_tb
.den
<= 0) {
3971 av_log(NULL
, AV_LOG_ERROR
,
3972 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
3973 new_tb
.num
, new_tb
.den
,
3977 s
->time_base
= new_tb
;
3978 av_codec_set_pkt_timebase(s
->codec
, new_tb
);
3979 s
->pts_wrap_bits
= pts_wrap_bits
;
3982 void ff_parse_key_value(const char *str
, ff_parse_key_val_cb callback_get_buf
,
3985 const char *ptr
= str
;
3987 /* Parse key=value pairs. */
3990 char *dest
= NULL
, *dest_end
;
3991 int key_len
, dest_len
= 0;
3993 /* Skip whitespace and potential commas. */
3994 while (*ptr
&& (av_isspace(*ptr
) || *ptr
== ','))
4001 if (!(ptr
= strchr(key
, '=')))
4004 key_len
= ptr
- key
;
4006 callback_get_buf(context
, key
, key_len
, &dest
, &dest_len
);
4007 dest_end
= dest
+ dest_len
- 1;
4011 while (*ptr
&& *ptr
!= '\"') {
4015 if (dest
&& dest
< dest_end
)
4019 if (dest
&& dest
< dest_end
)
4027 for (; *ptr
&& !(av_isspace(*ptr
) || *ptr
== ','); ptr
++)
4028 if (dest
&& dest
< dest_end
)
4036 int ff_find_stream_index(AVFormatContext
*s
, int id
)
4039 for (i
= 0; i
< s
->nb_streams
; i
++)
4040 if (s
->streams
[i
]->id
== id
)
4045 int64_t ff_iso8601_to_unix_time(const char *datestr
)
4047 struct tm time1
= { 0 }, time2
= { 0 };
4049 ret1
= av_small_strptime(datestr
, "%Y - %m - %d %H:%M:%S", &time1
);
4050 ret2
= av_small_strptime(datestr
, "%Y - %m - %dT%H:%M:%S", &time2
);
4052 return av_timegm(&time2
);
4054 return av_timegm(&time1
);
4057 int avformat_query_codec(const AVOutputFormat
*ofmt
, enum AVCodecID codec_id
,
4061 if (ofmt
->query_codec
)
4062 return ofmt
->query_codec(codec_id
, std_compliance
);
4063 else if (ofmt
->codec_tag
)
4064 return !!av_codec_get_tag(ofmt
->codec_tag
, codec_id
);
4065 else if (codec_id
== ofmt
->video_codec
||
4066 codec_id
== ofmt
->audio_codec
||
4067 codec_id
== ofmt
->subtitle_codec
)
4070 return AVERROR_PATCHWELCOME
;
4073 int avformat_network_init(void)
4077 ff_network_inited_globally
= 1;
4078 if ((ret
= ff_network_init()) < 0)
4085 int avformat_network_deinit(void)
4094 int ff_add_param_change(AVPacket
*pkt
, int32_t channels
,
4095 uint64_t channel_layout
, int32_t sample_rate
,
4096 int32_t width
, int32_t height
)
4102 return AVERROR(EINVAL
);
4105 flags
|= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
;
4107 if (channel_layout
) {
4109 flags
|= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
;
4113 flags
|= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
;
4115 if (width
|| height
) {
4117 flags
|= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
;
4119 data
= av_packet_new_side_data(pkt
, AV_PKT_DATA_PARAM_CHANGE
, size
);
4121 return AVERROR(ENOMEM
);
4122 bytestream_put_le32(&data
, flags
);
4124 bytestream_put_le32(&data
, channels
);
4126 bytestream_put_le64(&data
, channel_layout
);
4128 bytestream_put_le32(&data
, sample_rate
);
4129 if (width
|| height
) {
4130 bytestream_put_le32(&data
, width
);
4131 bytestream_put_le32(&data
, height
);
4136 AVRational
av_guess_sample_aspect_ratio(AVFormatContext
*format
, AVStream
*stream
, AVFrame
*frame
)
4138 AVRational undef
= {0, 1};
4139 AVRational stream_sample_aspect_ratio
= stream
? stream
->sample_aspect_ratio
: undef
;
4140 AVRational codec_sample_aspect_ratio
= stream
&& stream
->codec
? stream
->codec
->sample_aspect_ratio
: undef
;
4141 AVRational frame_sample_aspect_ratio
= frame
? frame
->sample_aspect_ratio
: codec_sample_aspect_ratio
;
4143 av_reduce(&stream_sample_aspect_ratio
.num
, &stream_sample_aspect_ratio
.den
,
4144 stream_sample_aspect_ratio
.num
, stream_sample_aspect_ratio
.den
, INT_MAX
);
4145 if (stream_sample_aspect_ratio
.num
<= 0 || stream_sample_aspect_ratio
.den
<= 0)
4146 stream_sample_aspect_ratio
= undef
;
4148 av_reduce(&frame_sample_aspect_ratio
.num
, &frame_sample_aspect_ratio
.den
,
4149 frame_sample_aspect_ratio
.num
, frame_sample_aspect_ratio
.den
, INT_MAX
);
4150 if (frame_sample_aspect_ratio
.num
<= 0 || frame_sample_aspect_ratio
.den
<= 0)
4151 frame_sample_aspect_ratio
= undef
;
4153 if (stream_sample_aspect_ratio
.num
)
4154 return stream_sample_aspect_ratio
;
4156 return frame_sample_aspect_ratio
;
4159 AVRational
av_guess_frame_rate(AVFormatContext
*format
, AVStream
*st
, AVFrame
*frame
)
4161 AVRational fr
= st
->r_frame_rate
;
4162 AVRational codec_fr
= st
->codec
->framerate
;
4163 AVRational avg_fr
= st
->avg_frame_rate
;
4165 if (avg_fr
.num
> 0 && avg_fr
.den
> 0 && fr
.num
> 0 && fr
.den
> 0 &&
4166 av_q2d(avg_fr
) < 70 && av_q2d(fr
) > 210) {
4171 if (st
->codec
->ticks_per_frame
> 1) {
4172 if ( codec_fr
.num
> 0 && codec_fr
.den
> 0 && av_q2d(codec_fr
) < av_q2d(fr
)*0.7
4173 && fabs(1.0 - av_q2d(av_div_q(avg_fr
, fr
))) > 0.1)
4180 int avformat_match_stream_specifier(AVFormatContext
*s
, AVStream
*st
,
4183 if (*spec
<= '9' && *spec
>= '0') /* opt:index */
4184 return strtol(spec
, NULL
, 0) == st
->index
;
4185 else if (*spec
== 'v' || *spec
== 'a' || *spec
== 's' || *spec
== 'd' ||
4186 *spec
== 't') { /* opt:[vasdt] */
4187 enum AVMediaType type
;
4190 case 'v': type
= AVMEDIA_TYPE_VIDEO
; break;
4191 case 'a': type
= AVMEDIA_TYPE_AUDIO
; break;
4192 case 's': type
= AVMEDIA_TYPE_SUBTITLE
; break;
4193 case 'd': type
= AVMEDIA_TYPE_DATA
; break;
4194 case 't': type
= AVMEDIA_TYPE_ATTACHMENT
; break;
4195 default: av_assert0(0);
4197 if (type
!= st
->codec
->codec_type
)
4199 if (*spec
++ == ':') { /* possibly followed by :index */
4200 int i
, index
= strtol(spec
, NULL
, 0);
4201 for (i
= 0; i
< s
->nb_streams
; i
++)
4202 if (s
->streams
[i
]->codec
->codec_type
== type
&& index
-- == 0)
4203 return i
== st
->index
;
4207 } else if (*spec
== 'p' && *(spec
+ 1) == ':') {
4211 prog_id
= strtol(spec
, &endptr
, 0);
4212 for (i
= 0; i
< s
->nb_programs
; i
++) {
4213 if (s
->programs
[i
]->id
!= prog_id
)
4216 if (*endptr
++ == ':') {
4217 int stream_idx
= strtol(endptr
, NULL
, 0);
4218 return stream_idx
>= 0 &&
4219 stream_idx
< s
->programs
[i
]->nb_stream_indexes
&&
4220 st
->index
== s
->programs
[i
]->stream_index
[stream_idx
];
4223 for (j
= 0; j
< s
->programs
[i
]->nb_stream_indexes
; j
++)
4224 if (st
->index
== s
->programs
[i
]->stream_index
[j
])
4228 } else if (*spec
== '#' ||
4229 (*spec
== 'i' && *(spec
+ 1) == ':')) {
4232 spec
+= 1 + (*spec
== 'i');
4233 stream_id
= strtol(spec
, &endptr
, 0);
4235 return stream_id
== st
->id
;
4236 } else if (*spec
== 'm' && *(spec
+ 1) == ':') {
4237 AVDictionaryEntry
*tag
;
4242 val
= strchr(spec
, ':');
4244 key
= val
? av_strndup(spec
, val
- spec
) : av_strdup(spec
);
4246 return AVERROR(ENOMEM
);
4248 tag
= av_dict_get(st
->metadata
, key
, NULL
, 0);
4250 if (!val
|| !strcmp(tag
->value
, val
+ 1))
4259 } else if (!*spec
) /* empty specifier, matches everything */
4262 av_log(s
, AV_LOG_ERROR
, "Invalid stream specifier: %s.\n", spec
);
4263 return AVERROR(EINVAL
);
4266 int ff_generate_avci_extradata(AVStream
*st
)
4268 static const uint8_t avci100_1080p_extradata
[] = {
4270 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4271 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4272 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4273 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4274 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4275 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4276 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4277 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4278 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4280 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4283 static const uint8_t avci100_1080i_extradata
[] = {
4285 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4286 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4287 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4288 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4289 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4290 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4291 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4292 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4293 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4294 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4295 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4297 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4300 static const uint8_t avci50_1080p_extradata
[] = {
4302 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4303 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4304 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4305 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4306 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4307 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4308 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4309 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4310 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4312 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4315 static const uint8_t avci50_1080i_extradata
[] = {
4317 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4318 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4319 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4320 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4321 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4322 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4323 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4324 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4325 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4326 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4327 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4329 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4332 static const uint8_t avci100_720p_extradata
[] = {
4334 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4335 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4336 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4337 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4338 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4339 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4340 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4341 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4342 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4343 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4345 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4348 static const uint8_t avci50_720p_extradata
[] = {
4350 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4351 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4352 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4353 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4354 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4355 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4356 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4357 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4358 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4360 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4364 const uint8_t *data
= NULL
;
4367 if (st
->codec
->width
== 1920) {
4368 if (st
->codec
->field_order
== AV_FIELD_PROGRESSIVE
) {
4369 data
= avci100_1080p_extradata
;
4370 size
= sizeof(avci100_1080p_extradata
);
4372 data
= avci100_1080i_extradata
;
4373 size
= sizeof(avci100_1080i_extradata
);
4375 } else if (st
->codec
->width
== 1440) {
4376 if (st
->codec
->field_order
== AV_FIELD_PROGRESSIVE
) {
4377 data
= avci50_1080p_extradata
;
4378 size
= sizeof(avci50_1080p_extradata
);
4380 data
= avci50_1080i_extradata
;
4381 size
= sizeof(avci50_1080i_extradata
);
4383 } else if (st
->codec
->width
== 1280) {
4384 data
= avci100_720p_extradata
;
4385 size
= sizeof(avci100_720p_extradata
);
4386 } else if (st
->codec
->width
== 960) {
4387 data
= avci50_720p_extradata
;
4388 size
= sizeof(avci50_720p_extradata
);
4394 av_freep(&st
->codec
->extradata
);
4395 if (ff_alloc_extradata(st
->codec
, size
))
4396 return AVERROR(ENOMEM
);
4397 memcpy(st
->codec
->extradata
, data
, size
);
4402 uint8_t *av_stream_get_side_data(AVStream
*st
, enum AVPacketSideDataType type
,
4407 for (i
= 0; i
< st
->nb_side_data
; i
++) {
4408 if (st
->side_data
[i
].type
== type
) {
4410 *size
= st
->side_data
[i
].size
;
4411 return st
->side_data
[i
].data
;