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_size
= 0;
2833 return AVERROR(EINVAL
);
2835 avctx
->extradata
= av_malloc(size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
2836 if (avctx
->extradata
) {
2837 memset(avctx
->extradata
+ size
, 0, FF_INPUT_BUFFER_PADDING_SIZE
);
2838 avctx
->extradata_size
= size
;
2841 avctx
->extradata_size
= 0;
2842 ret
= AVERROR(ENOMEM
);
2847 int ff_get_extradata(AVCodecContext
*avctx
, AVIOContext
*pb
, int size
)
2849 int ret
= ff_alloc_extradata(avctx
, size
);
2852 ret
= avio_read(pb
, avctx
->extradata
, size
);
2854 av_freep(&avctx
->extradata
);
2855 avctx
->extradata_size
= 0;
2856 av_log(avctx
, AV_LOG_ERROR
, "Failed to read extradata of size %d\n", size
);
2857 return ret
< 0 ? ret
: AVERROR_INVALIDDATA
;
2863 int ff_rfps_add_frame(AVFormatContext
*ic
, AVStream
*st
, int64_t ts
)
2866 int64_t last
= st
->info
->last_dts
;
2868 if ( ts
!= AV_NOPTS_VALUE
&& last
!= AV_NOPTS_VALUE
&& ts
> last
2869 && ts
- (uint64_t)last
< INT64_MAX
) {
2870 double dts
= (is_relative(ts
) ? ts
- RELATIVE_TS_BASE
: ts
) * av_q2d(st
->time_base
);
2871 int64_t duration
= ts
- last
;
2873 if (!st
->info
->duration_error
)
2874 st
->info
->duration_error
= av_mallocz(sizeof(st
->info
->duration_error
[0])*2);
2875 if (!st
->info
->duration_error
)
2876 return AVERROR(ENOMEM
);
2878 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2879 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2880 for (i
= 0; i
<MAX_STD_TIMEBASES
; i
++) {
2881 if (st
->info
->duration_error
[0][1][i
] < 1e10
) {
2882 int framerate
= get_std_framerate(i
);
2883 double sdts
= dts
*framerate
/(1001*12);
2884 for (j
= 0; j
<2; j
++) {
2885 int64_t ticks
= llrint(sdts
+j
*0.5);
2886 double error
= sdts
- ticks
+ j
*0.5;
2887 st
->info
->duration_error
[j
][0][i
] += error
;
2888 st
->info
->duration_error
[j
][1][i
] += error
*error
;
2892 st
->info
->duration_count
++;
2893 st
->info
->rfps_duration_sum
+= duration
;
2895 if (st
->info
->duration_count
% 10 == 0) {
2896 int n
= st
->info
->duration_count
;
2897 for (i
= 0; i
<MAX_STD_TIMEBASES
; i
++) {
2898 if (st
->info
->duration_error
[0][1][i
] < 1e10
) {
2899 double a0
= st
->info
->duration_error
[0][0][i
] / n
;
2900 double error0
= st
->info
->duration_error
[0][1][i
] / n
- a0
*a0
;
2901 double a1
= st
->info
->duration_error
[1][0][i
] / n
;
2902 double error1
= st
->info
->duration_error
[1][1][i
] / n
- a1
*a1
;
2903 if (error0
> 0.04 && error1
> 0.04) {
2904 st
->info
->duration_error
[0][1][i
] = 2e10
;
2905 st
->info
->duration_error
[1][1][i
] = 2e10
;
2911 // ignore the first 4 values, they might have some random jitter
2912 if (st
->info
->duration_count
> 3 && is_relative(ts
) == is_relative(last
))
2913 st
->info
->duration_gcd
= av_gcd(st
->info
->duration_gcd
, duration
);
2915 if (ts
!= AV_NOPTS_VALUE
)
2916 st
->info
->last_dts
= ts
;
2921 void ff_rfps_calculate(AVFormatContext
*ic
)
2925 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2926 AVStream
*st
= ic
->streams
[i
];
2928 if (st
->codec
->codec_type
!= AVMEDIA_TYPE_VIDEO
)
2930 // the check for tb_unreliable() is not completely correct, since this is not about handling
2931 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2932 // ipmovie.c produces.
2933 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
)
2934 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
);
2935 if (st
->info
->duration_count
>1 && !st
->r_frame_rate
.num
2936 && tb_unreliable(st
->codec
)) {
2938 double best_error
= 0.01;
2939 AVRational ref_rate
= st
->r_frame_rate
.num
? st
->r_frame_rate
: av_inv_q(st
->time_base
);
2941 for (j
= 0; j
<MAX_STD_TIMEBASES
; j
++) {
2944 if (st
->info
->codec_info_duration
&& st
->info
->codec_info_duration
*av_q2d(st
->time_base
) < (1001*12.0)/get_std_framerate(j
))
2946 if (!st
->info
->codec_info_duration
&& 1.0 < (1001*12.0)/get_std_framerate(j
))
2949 if (av_q2d(st
->time_base
) * st
->info
->rfps_duration_sum
/ st
->info
->duration_count
< (1001*12.0 * 0.8)/get_std_framerate(j
))
2952 for (k
= 0; k
<2; k
++) {
2953 int n
= st
->info
->duration_count
;
2954 double a
= st
->info
->duration_error
[k
][0][j
] / n
;
2955 double error
= st
->info
->duration_error
[k
][1][j
]/n
- a
*a
;
2957 if (error
< best_error
&& best_error
> 0.000000001) {
2959 num
= get_std_framerate(j
);
2962 av_log(NULL
, AV_LOG_DEBUG
, "rfps: %f %f\n", get_std_framerate(j
) / 12.0/1001, error
);
2965 // do not increase frame rate by more than 1 % in order to match a standard rate.
2966 if (num
&& (!ref_rate
.num
|| (double)num
/(12*1001) < 1.01 * av_q2d(ref_rate
)))
2967 av_reduce(&st
->r_frame_rate
.num
, &st
->r_frame_rate
.den
, num
, 12*1001, INT_MAX
);
2969 if ( !st
->avg_frame_rate
.num
2970 && st
->r_frame_rate
.num
&& st
->info
->rfps_duration_sum
2971 && st
->info
->codec_info_duration
<= 0
2972 && st
->info
->duration_count
> 2
2973 && 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
2975 av_log(ic
, AV_LOG_DEBUG
, "Setting avg frame rate based on r frame rate\n");
2976 st
->avg_frame_rate
= st
->r_frame_rate
;
2979 av_freep(&st
->info
->duration_error
);
2980 st
->info
->last_dts
= AV_NOPTS_VALUE
;
2981 st
->info
->duration_count
= 0;
2982 st
->info
->rfps_duration_sum
= 0;
2986 int avformat_find_stream_info(AVFormatContext
*ic
, AVDictionary
**options
)
2988 int i
, count
, ret
= 0, j
;
2991 AVPacket pkt1
, *pkt
;
2992 int64_t old_offset
= avio_tell(ic
->pb
);
2993 // new streams might appear, no options for those
2994 int orig_nb_streams
= ic
->nb_streams
;
2996 int64_t max_analyze_duration
= ic
->max_analyze_duration2
;
2997 int64_t max_stream_analyze_duration
;
2998 int64_t probesize
= ic
->probesize2
;
3000 if (!max_analyze_duration
)
3001 max_analyze_duration
= ic
->max_analyze_duration
;
3003 probesize
= ic
->probesize
;
3004 flush_codecs
= probesize
> 0;
3006 av_opt_set(ic
, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN
);
3008 max_stream_analyze_duration
= max_analyze_duration
;
3009 if (!max_analyze_duration
) {
3010 max_stream_analyze_duration
=
3011 max_analyze_duration
= 5*AV_TIME_BASE
;
3012 if (!strcmp(ic
->iformat
->name
, "flv"))
3013 max_stream_analyze_duration
= 30*AV_TIME_BASE
;
3017 av_log(ic
, AV_LOG_DEBUG
, "Before avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d\n",
3018 avio_tell(ic
->pb
), ic
->pb
->bytes_read
, ic
->pb
->seek_count
);
3020 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3021 const AVCodec
*codec
;
3022 AVDictionary
*thread_opt
= NULL
;
3023 st
= ic
->streams
[i
];
3025 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
||
3026 st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
) {
3027 /* if (!st->time_base.num)
3029 if (!st
->codec
->time_base
.num
)
3030 st
->codec
->time_base
= st
->time_base
;
3032 // only for the split stuff
3033 if (!st
->parser
&& !(ic
->flags
& AVFMT_FLAG_NOPARSE
)) {
3034 st
->parser
= av_parser_init(st
->codec
->codec_id
);
3036 if (st
->need_parsing
== AVSTREAM_PARSE_HEADERS
) {
3037 st
->parser
->flags
|= PARSER_FLAG_COMPLETE_FRAMES
;
3038 } else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
) {
3039 st
->parser
->flags
|= PARSER_FLAG_USE_CODEC_TS
;
3041 } else if (st
->need_parsing
) {
3042 av_log(ic
, AV_LOG_VERBOSE
, "parser not found for codec "
3043 "%s, packets or times may be invalid.\n",
3044 avcodec_get_name(st
->codec
->codec_id
));
3047 codec
= find_decoder(ic
, st
, st
->codec
->codec_id
);
3049 /* Force thread count to 1 since the H.264 decoder will not extract
3050 * SPS and PPS to extradata during multi-threaded decoding. */
3051 av_dict_set(options
? &options
[i
] : &thread_opt
, "threads", "1", 0);
3053 if (ic
->codec_whitelist
)
3054 av_dict_set(options
? &options
[i
] : &thread_opt
, "codec_whitelist", ic
->codec_whitelist
, 0);
3056 /* Ensure that subtitle_header is properly set. */
3057 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
3058 && codec
&& !st
->codec
->codec
) {
3059 if (avcodec_open2(st
->codec
, codec
, options
? &options
[i
] : &thread_opt
) < 0)
3060 av_log(ic
, AV_LOG_WARNING
,
3061 "Failed to open codec in av_find_stream_info\n");
3064 // Try to just open decoders, in case this is enough to get parameters.
3065 if (!has_codec_parameters(st
, NULL
) && st
->request_probe
<= 0) {
3066 if (codec
&& !st
->codec
->codec
)
3067 if (avcodec_open2(st
->codec
, codec
, options
? &options
[i
] : &thread_opt
) < 0)
3068 av_log(ic
, AV_LOG_WARNING
,
3069 "Failed to open codec in av_find_stream_info\n");
3072 av_dict_free(&thread_opt
);
3075 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3076 #if FF_API_R_FRAME_RATE
3077 ic
->streams
[i
]->info
->last_dts
= AV_NOPTS_VALUE
;
3079 ic
->streams
[i
]->info
->fps_first_dts
= AV_NOPTS_VALUE
;
3080 ic
->streams
[i
]->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3086 int analyzed_all_streams
;
3087 if (ff_check_interrupt(&ic
->interrupt_callback
)) {
3089 av_log(ic
, AV_LOG_DEBUG
, "interrupted\n");
3093 /* check if one codec still needs to be handled */
3094 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3095 int fps_analyze_framecount
= 20;
3097 st
= ic
->streams
[i
];
3098 if (!has_codec_parameters(st
, NULL
))
3100 /* If the timebase is coarse (like the usual millisecond precision
3101 * of mkv), we need to analyze more frames to reliably arrive at
3102 * the correct fps. */
3103 if (av_q2d(st
->time_base
) > 0.0005)
3104 fps_analyze_framecount
*= 2;
3105 if (!tb_unreliable(st
->codec
))
3106 fps_analyze_framecount
= 0;
3107 if (ic
->fps_probe_size
>= 0)
3108 fps_analyze_framecount
= ic
->fps_probe_size
;
3109 if (st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
)
3110 fps_analyze_framecount
= 0;
3111 /* variable fps and no guess at the real fps */
3112 if (!(st
->r_frame_rate
.num
&& st
->avg_frame_rate
.num
) &&
3113 st
->info
->duration_count
< fps_analyze_framecount
&&
3114 st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)
3116 if (st
->parser
&& st
->parser
->parser
->split
&&
3117 !st
->codec
->extradata
)
3119 if (st
->first_dts
== AV_NOPTS_VALUE
&&
3120 !(ic
->iformat
->flags
& AVFMT_NOTIMESTAMPS
) &&
3121 st
->codec_info_nb_frames
< ic
->max_ts_probe
&&
3122 (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
||
3123 st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
))
3126 analyzed_all_streams
= 0;
3127 if (i
== ic
->nb_streams
) {
3128 analyzed_all_streams
= 1;
3129 /* NOTE: If the format has no header, then we need to read some
3130 * packets to get most of the streams, so we cannot stop here. */
3131 if (!(ic
->ctx_flags
& AVFMTCTX_NOHEADER
)) {
3132 /* If we found the info for all the codecs, we can stop. */
3134 av_log(ic
, AV_LOG_DEBUG
, "All info found\n");
3139 /* We did not get all the codec info, but we read too much data. */
3140 if (read_size
>= probesize
) {
3142 av_log(ic
, AV_LOG_DEBUG
,
3143 "Probe buffer size limit of %"PRId64
" bytes reached\n", probesize
);
3144 for (i
= 0; i
< ic
->nb_streams
; i
++)
3145 if (!ic
->streams
[i
]->r_frame_rate
.num
&&
3146 ic
->streams
[i
]->info
->duration_count
<= 1 &&
3147 ic
->streams
[i
]->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
3148 strcmp(ic
->iformat
->name
, "image2"))
3149 av_log(ic
, AV_LOG_WARNING
,
3150 "Stream #%d: not enough frames to estimate rate; "
3151 "consider increasing probesize\n", i
);
3155 /* NOTE: A new stream can be added there if no header in file
3156 * (AVFMTCTX_NOHEADER). */
3157 ret
= read_frame_internal(ic
, &pkt1
);
3158 if (ret
== AVERROR(EAGAIN
))
3166 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3167 free_packet_buffer(&ic
->packet_buffer
, &ic
->packet_buffer_end
);
3169 pkt
= add_to_pktbuf(&ic
->packet_buffer
, &pkt1
,
3170 &ic
->packet_buffer_end
);
3172 ret
= AVERROR(ENOMEM
);
3173 goto find_stream_info_err
;
3175 if ((ret
= av_dup_packet(pkt
)) < 0)
3176 goto find_stream_info_err
;
3179 st
= ic
->streams
[pkt
->stream_index
];
3180 if (!(st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
))
3181 read_size
+= pkt
->size
;
3183 if (pkt
->dts
!= AV_NOPTS_VALUE
&& st
->codec_info_nb_frames
> 1) {
3184 /* check for non-increasing dts */
3185 if (st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
&&
3186 st
->info
->fps_last_dts
>= pkt
->dts
) {
3187 av_log(ic
, AV_LOG_DEBUG
,
3188 "Non-increasing DTS in stream %d: packet %d with DTS "
3189 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3190 st
->index
, st
->info
->fps_last_dts_idx
,
3191 st
->info
->fps_last_dts
, st
->codec_info_nb_frames
,
3193 st
->info
->fps_first_dts
=
3194 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3196 /* Check for a discontinuity in dts. If the difference in dts
3197 * is more than 1000 times the average packet duration in the
3198 * sequence, we treat it as a discontinuity. */
3199 if (st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
&&
3200 st
->info
->fps_last_dts_idx
> st
->info
->fps_first_dts_idx
&&
3201 (pkt
->dts
- st
->info
->fps_last_dts
) / 1000 >
3202 (st
->info
->fps_last_dts
- st
->info
->fps_first_dts
) /
3203 (st
->info
->fps_last_dts_idx
- st
->info
->fps_first_dts_idx
)) {
3204 av_log(ic
, AV_LOG_WARNING
,
3205 "DTS discontinuity in stream %d: packet %d with DTS "
3206 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3207 st
->index
, st
->info
->fps_last_dts_idx
,
3208 st
->info
->fps_last_dts
, st
->codec_info_nb_frames
,
3210 st
->info
->fps_first_dts
=
3211 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3214 /* update stored dts values */
3215 if (st
->info
->fps_first_dts
== AV_NOPTS_VALUE
) {
3216 st
->info
->fps_first_dts
= pkt
->dts
;
3217 st
->info
->fps_first_dts_idx
= st
->codec_info_nb_frames
;
3219 st
->info
->fps_last_dts
= pkt
->dts
;
3220 st
->info
->fps_last_dts_idx
= st
->codec_info_nb_frames
;
3222 if (st
->codec_info_nb_frames
>1) {
3225 if (st
->time_base
.den
> 0)
3226 t
= av_rescale_q(st
->info
->codec_info_duration
, st
->time_base
, AV_TIME_BASE_Q
);
3227 if (st
->avg_frame_rate
.num
> 0)
3228 t
= FFMAX(t
, av_rescale_q(st
->codec_info_nb_frames
, av_inv_q(st
->avg_frame_rate
), AV_TIME_BASE_Q
));
3231 && st
->codec_info_nb_frames
>30
3232 && st
->info
->fps_first_dts
!= AV_NOPTS_VALUE
3233 && st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
)
3234 t
= FFMAX(t
, av_rescale_q(st
->info
->fps_last_dts
- st
->info
->fps_first_dts
, st
->time_base
, AV_TIME_BASE_Q
));
3236 if (t
>= (analyzed_all_streams
? max_analyze_duration
: max_stream_analyze_duration
)) {
3237 av_log(ic
, AV_LOG_VERBOSE
, "max_analyze_duration %"PRId64
" reached at %"PRId64
" microseconds\n",
3238 max_analyze_duration
,
3240 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3241 av_packet_unref(pkt
);
3244 if (pkt
->duration
) {
3245 st
->info
->codec_info_duration
+= pkt
->duration
;
3246 st
->info
->codec_info_duration_fields
+= st
->parser
&& st
->need_parsing
&& st
->codec
->ticks_per_frame
==2 ? st
->parser
->repeat_pict
+ 1 : 2;
3249 #if FF_API_R_FRAME_RATE
3250 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)
3251 ff_rfps_add_frame(ic
, st
, pkt
->dts
);
3253 if (st
->parser
&& st
->parser
->parser
->split
&& !st
->codec
->extradata
) {
3254 int i
= st
->parser
->parser
->split(st
->codec
, pkt
->data
, pkt
->size
);
3255 if (i
> 0 && i
< FF_MAX_EXTRADATA_SIZE
) {
3256 if (ff_alloc_extradata(st
->codec
, i
))
3257 return AVERROR(ENOMEM
);
3258 memcpy(st
->codec
->extradata
, pkt
->data
,
3259 st
->codec
->extradata_size
);
3263 /* If still no information, we try to open the codec and to
3264 * decompress the frame. We try to avoid that in most cases as
3265 * it takes longer and uses more memory. For MPEG-4, we need to
3266 * decompress for QuickTime.
3268 * If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3269 * least one frame of codec data, this makes sure the codec initializes
3270 * the channel configuration and does not only trust the values from
3272 try_decode_frame(ic
, st
, pkt
,
3273 (options
&& i
< orig_nb_streams
) ? &options
[i
] : NULL
);
3275 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3276 av_packet_unref(pkt
);
3278 st
->codec_info_nb_frames
++;
3283 AVPacket empty_pkt
= { 0 };
3285 av_init_packet(&empty_pkt
);
3287 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3289 st
= ic
->streams
[i
];
3291 /* flush the decoders */
3292 if (st
->info
->found_decoder
== 1) {
3294 err
= try_decode_frame(ic
, st
, &empty_pkt
,
3295 (options
&& i
< orig_nb_streams
)
3296 ? &options
[i
] : NULL
);
3297 } while (err
> 0 && !has_codec_parameters(st
, NULL
));
3300 av_log(ic
, AV_LOG_INFO
,
3301 "decoding for stream %d failed\n", st
->index
);
3307 // close codecs which were opened in try_decode_frame()
3308 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3309 st
= ic
->streams
[i
];
3310 avcodec_close(st
->codec
);
3313 ff_rfps_calculate(ic
);
3315 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3316 st
= ic
->streams
[i
];
3317 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
3318 if (st
->codec
->codec_id
== AV_CODEC_ID_RAWVIDEO
&& !st
->codec
->codec_tag
&& !st
->codec
->bits_per_coded_sample
) {
3319 uint32_t tag
= avcodec_pix_fmt_to_codec_tag(st
->codec
->pix_fmt
);
3320 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag
) == st
->codec
->pix_fmt
)
3321 st
->codec
->codec_tag
= tag
;
3324 /* estimate average framerate if not set by demuxer */
3325 if (st
->info
->codec_info_duration_fields
&&
3326 !st
->avg_frame_rate
.num
&&
3327 st
->info
->codec_info_duration
) {
3329 double best_error
= 0.01;
3331 if (st
->info
->codec_info_duration
>= INT64_MAX
/ st
->time_base
.num
/ 2||
3332 st
->info
->codec_info_duration_fields
>= INT64_MAX
/ st
->time_base
.den
||
3333 st
->info
->codec_info_duration
< 0)
3335 av_reduce(&st
->avg_frame_rate
.num
, &st
->avg_frame_rate
.den
,
3336 st
->info
->codec_info_duration_fields
* (int64_t) st
->time_base
.den
,
3337 st
->info
->codec_info_duration
* 2 * (int64_t) st
->time_base
.num
, 60000);
3339 /* Round guessed framerate to a "standard" framerate if it's
3340 * within 1% of the original estimate. */
3341 for (j
= 0; j
< MAX_STD_TIMEBASES
; j
++) {
3342 AVRational std_fps
= { get_std_framerate(j
), 12 * 1001 };
3343 double error
= fabs(av_q2d(st
->avg_frame_rate
) /
3344 av_q2d(std_fps
) - 1);
3346 if (error
< best_error
) {
3348 best_fps
= std_fps
.num
;
3352 av_reduce(&st
->avg_frame_rate
.num
, &st
->avg_frame_rate
.den
,
3353 best_fps
, 12 * 1001, INT_MAX
);
3356 if (!st
->r_frame_rate
.num
) {
3357 if ( st
->codec
->time_base
.den
* (int64_t) st
->time_base
.num
3358 <= st
->codec
->time_base
.num
* st
->codec
->ticks_per_frame
* (int64_t) st
->time_base
.den
) {
3359 st
->r_frame_rate
.num
= st
->codec
->time_base
.den
;
3360 st
->r_frame_rate
.den
= st
->codec
->time_base
.num
* st
->codec
->ticks_per_frame
;
3362 st
->r_frame_rate
.num
= st
->time_base
.den
;
3363 st
->r_frame_rate
.den
= st
->time_base
.num
;
3366 if (st
->display_aspect_ratio
.num
&& st
->display_aspect_ratio
.den
) {
3367 AVRational hw_ratio
= { st
->codec
->height
, st
->codec
->width
};
3368 st
->sample_aspect_ratio
= av_mul_q(st
->display_aspect_ratio
,
3371 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
3372 if (!st
->codec
->bits_per_coded_sample
)
3373 st
->codec
->bits_per_coded_sample
=
3374 av_get_bits_per_sample(st
->codec
->codec_id
);
3375 // set stream disposition based on audio service type
3376 switch (st
->codec
->audio_service_type
) {
3377 case AV_AUDIO_SERVICE_TYPE_EFFECTS
:
3378 st
->disposition
= AV_DISPOSITION_CLEAN_EFFECTS
;
3380 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED
:
3381 st
->disposition
= AV_DISPOSITION_VISUAL_IMPAIRED
;
3383 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED
:
3384 st
->disposition
= AV_DISPOSITION_HEARING_IMPAIRED
;
3386 case AV_AUDIO_SERVICE_TYPE_COMMENTARY
:
3387 st
->disposition
= AV_DISPOSITION_COMMENT
;
3389 case AV_AUDIO_SERVICE_TYPE_KARAOKE
:
3390 st
->disposition
= AV_DISPOSITION_KARAOKE
;
3397 estimate_timings(ic
, old_offset
);
3399 av_opt_set(ic
, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN
);
3401 if (ret
>= 0 && ic
->nb_streams
)
3402 /* We could not have all the codec parameters before EOF. */
3404 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3406 st
= ic
->streams
[i
];
3407 if (!has_codec_parameters(st
, &errmsg
)) {
3409 avcodec_string(buf
, sizeof(buf
), st
->codec
, 0);
3410 av_log(ic
, AV_LOG_WARNING
,
3411 "Could not find codec parameters for stream %d (%s): %s\n"
3412 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3419 compute_chapters_end(ic
);
3421 find_stream_info_err
:
3422 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3423 st
= ic
->streams
[i
];
3424 if (ic
->streams
[i
]->codec
->codec_type
!= AVMEDIA_TYPE_AUDIO
)
3425 ic
->streams
[i
]->codec
->thread_count
= 0;
3427 av_freep(&st
->info
->duration_error
);
3428 av_freep(&ic
->streams
[i
]->info
);
3431 av_log(ic
, AV_LOG_DEBUG
, "After avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d frames:%d\n",
3432 avio_tell(ic
->pb
), ic
->pb
->bytes_read
, ic
->pb
->seek_count
, count
);
3436 AVProgram
*av_find_program_from_stream(AVFormatContext
*ic
, AVProgram
*last
, int s
)
3440 for (i
= 0; i
< ic
->nb_programs
; i
++) {
3441 if (ic
->programs
[i
] == last
) {
3445 for (j
= 0; j
< ic
->programs
[i
]->nb_stream_indexes
; j
++)
3446 if (ic
->programs
[i
]->stream_index
[j
] == s
)
3447 return ic
->programs
[i
];
3453 int av_find_best_stream(AVFormatContext
*ic
, enum AVMediaType type
,
3454 int wanted_stream_nb
, int related_stream
,
3455 AVCodec
**decoder_ret
, int flags
)
3457 int i
, nb_streams
= ic
->nb_streams
;
3458 int ret
= AVERROR_STREAM_NOT_FOUND
, best_count
= -1, best_bitrate
= -1, best_multiframe
= -1, count
, bitrate
, multiframe
;
3459 unsigned *program
= NULL
;
3460 const AVCodec
*decoder
= NULL
, *best_decoder
= NULL
;
3462 if (related_stream
>= 0 && wanted_stream_nb
< 0) {
3463 AVProgram
*p
= av_find_program_from_stream(ic
, NULL
, related_stream
);
3465 program
= p
->stream_index
;
3466 nb_streams
= p
->nb_stream_indexes
;
3469 for (i
= 0; i
< nb_streams
; i
++) {
3470 int real_stream_index
= program
? program
[i
] : i
;
3471 AVStream
*st
= ic
->streams
[real_stream_index
];
3472 AVCodecContext
*avctx
= st
->codec
;
3473 if (avctx
->codec_type
!= type
)
3475 if (wanted_stream_nb
>= 0 && real_stream_index
!= wanted_stream_nb
)
3477 if (wanted_stream_nb
!= real_stream_index
&&
3478 st
->disposition
& (AV_DISPOSITION_HEARING_IMPAIRED
|
3479 AV_DISPOSITION_VISUAL_IMPAIRED
))
3481 if (type
== AVMEDIA_TYPE_AUDIO
&& !avctx
->channels
)
3484 decoder
= find_decoder(ic
, st
, st
->codec
->codec_id
);
3487 ret
= AVERROR_DECODER_NOT_FOUND
;
3491 count
= st
->codec_info_nb_frames
;
3492 bitrate
= avctx
->bit_rate
;
3494 bitrate
= avctx
->rc_max_rate
;
3495 multiframe
= FFMIN(5, count
);
3496 if ((best_multiframe
> multiframe
) ||
3497 (best_multiframe
== multiframe
&& best_bitrate
> bitrate
) ||
3498 (best_multiframe
== multiframe
&& best_bitrate
== bitrate
&& best_count
>= count
))
3501 best_bitrate
= bitrate
;
3502 best_multiframe
= multiframe
;
3503 ret
= real_stream_index
;
3504 best_decoder
= decoder
;
3505 if (program
&& i
== nb_streams
- 1 && ret
< 0) {
3507 nb_streams
= ic
->nb_streams
;
3508 /* no related stream found, try again with everything */
3513 *decoder_ret
= (AVCodec
*)best_decoder
;
3517 /*******************************************************/
3519 int av_read_play(AVFormatContext
*s
)
3521 if (s
->iformat
->read_play
)
3522 return s
->iformat
->read_play(s
);
3524 return avio_pause(s
->pb
, 0);
3525 return AVERROR(ENOSYS
);
3528 int av_read_pause(AVFormatContext
*s
)
3530 if (s
->iformat
->read_pause
)
3531 return s
->iformat
->read_pause(s
);
3533 return avio_pause(s
->pb
, 1);
3534 return AVERROR(ENOSYS
);
3537 void ff_free_stream(AVFormatContext
*s
, AVStream
*st
) {
3539 av_assert0(s
->nb_streams
>0);
3540 av_assert0(s
->streams
[ s
->nb_streams
- 1 ] == st
);
3542 for (j
= 0; j
< st
->nb_side_data
; j
++)
3543 av_freep(&st
->side_data
[j
].data
);
3544 av_freep(&st
->side_data
);
3545 st
->nb_side_data
= 0;
3548 av_parser_close(st
->parser
);
3550 if (st
->attached_pic
.data
)
3551 av_free_packet(&st
->attached_pic
);
3552 av_dict_free(&st
->metadata
);
3553 av_freep(&st
->probe_data
.buf
);
3554 av_freep(&st
->index_entries
);
3555 av_freep(&st
->codec
->extradata
);
3556 av_freep(&st
->codec
->subtitle_header
);
3557 av_freep(&st
->codec
);
3558 av_freep(&st
->priv_data
);
3560 av_freep(&st
->info
->duration_error
);
3561 av_freep(&st
->info
);
3562 av_freep(&st
->recommended_encoder_configuration
);
3563 av_freep(&s
->streams
[ --s
->nb_streams
]);
3566 void avformat_free_context(AVFormatContext
*s
)
3574 if (s
->iformat
&& s
->iformat
->priv_class
&& s
->priv_data
)
3575 av_opt_free(s
->priv_data
);
3576 if (s
->oformat
&& s
->oformat
->priv_class
&& s
->priv_data
)
3577 av_opt_free(s
->priv_data
);
3579 for (i
= s
->nb_streams
- 1; i
>= 0; i
--) {
3580 ff_free_stream(s
, s
->streams
[i
]);
3582 for (i
= s
->nb_programs
- 1; i
>= 0; i
--) {
3583 av_dict_free(&s
->programs
[i
]->metadata
);
3584 av_freep(&s
->programs
[i
]->stream_index
);
3585 av_freep(&s
->programs
[i
]);
3587 av_freep(&s
->programs
);
3588 av_freep(&s
->priv_data
);
3589 while (s
->nb_chapters
--) {
3590 av_dict_free(&s
->chapters
[s
->nb_chapters
]->metadata
);
3591 av_freep(&s
->chapters
[s
->nb_chapters
]);
3593 av_freep(&s
->chapters
);
3594 av_dict_free(&s
->metadata
);
3595 av_freep(&s
->streams
);
3596 av_freep(&s
->internal
);
3597 flush_packet_queue(s
);
3601 void avformat_close_input(AVFormatContext
**ps
)
3612 if ((s
->iformat
&& strcmp(s
->iformat
->name
, "image2") && s
->iformat
->flags
& AVFMT_NOFILE
) ||
3613 (s
->flags
& AVFMT_FLAG_CUSTOM_IO
))
3616 flush_packet_queue(s
);
3619 if (s
->iformat
->read_close
)
3620 s
->iformat
->read_close(s
);
3622 avformat_free_context(s
);
3629 AVStream
*avformat_new_stream(AVFormatContext
*s
, const AVCodec
*c
)
3635 if (s
->nb_streams
>= INT_MAX
/sizeof(*streams
))
3637 streams
= av_realloc_array(s
->streams
, s
->nb_streams
+ 1, sizeof(*streams
));
3640 s
->streams
= streams
;
3642 st
= av_mallocz(sizeof(AVStream
));
3645 if (!(st
->info
= av_mallocz(sizeof(*st
->info
)))) {
3649 st
->info
->last_dts
= AV_NOPTS_VALUE
;
3651 st
->codec
= avcodec_alloc_context3(c
);
3653 /* no default bitrate if decoding */
3654 st
->codec
->bit_rate
= 0;
3656 /* default pts setting is MPEG-like */
3657 avpriv_set_pts_info(st
, 33, 1, 90000);
3660 st
->index
= s
->nb_streams
;
3661 st
->start_time
= AV_NOPTS_VALUE
;
3662 st
->duration
= AV_NOPTS_VALUE
;
3663 /* we set the current DTS to 0 so that formats without any timestamps
3664 * but durations get some timestamps, formats with some unknown
3665 * timestamps have their first few packets buffered and the
3666 * timestamps corrected before they are returned to the user */
3667 st
->cur_dts
= s
->iformat
? RELATIVE_TS_BASE
: 0;
3668 st
->first_dts
= AV_NOPTS_VALUE
;
3669 st
->probe_packets
= MAX_PROBE_PACKETS
;
3670 st
->pts_wrap_reference
= AV_NOPTS_VALUE
;
3671 st
->pts_wrap_behavior
= AV_PTS_WRAP_IGNORE
;
3673 st
->last_IP_pts
= AV_NOPTS_VALUE
;
3674 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
3675 for (i
= 0; i
< MAX_REORDER_DELAY
+ 1; i
++)
3676 st
->pts_buffer
[i
] = AV_NOPTS_VALUE
;
3678 st
->sample_aspect_ratio
= (AVRational
) { 0, 1 };
3680 #if FF_API_R_FRAME_RATE
3681 st
->info
->last_dts
= AV_NOPTS_VALUE
;
3683 st
->info
->fps_first_dts
= AV_NOPTS_VALUE
;
3684 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3686 st
->inject_global_side_data
= s
->internal
->inject_global_side_data
;
3688 s
->streams
[s
->nb_streams
++] = st
;
3692 AVProgram
*av_new_program(AVFormatContext
*ac
, int id
)
3694 AVProgram
*program
= NULL
;
3697 av_dlog(ac
, "new_program: id=0x%04x\n", id
);
3699 for (i
= 0; i
< ac
->nb_programs
; i
++)
3700 if (ac
->programs
[i
]->id
== id
)
3701 program
= ac
->programs
[i
];
3704 program
= av_mallocz(sizeof(AVProgram
));
3707 dynarray_add(&ac
->programs
, &ac
->nb_programs
, program
);
3708 program
->discard
= AVDISCARD_NONE
;
3711 program
->pts_wrap_reference
= AV_NOPTS_VALUE
;
3712 program
->pts_wrap_behavior
= AV_PTS_WRAP_IGNORE
;
3714 program
->start_time
=
3715 program
->end_time
= AV_NOPTS_VALUE
;
3720 AVChapter
*avpriv_new_chapter(AVFormatContext
*s
, int id
, AVRational time_base
,
3721 int64_t start
, int64_t end
, const char *title
)
3723 AVChapter
*chapter
= NULL
;
3726 if (end
!= AV_NOPTS_VALUE
&& start
> end
) {
3727 av_log(s
, AV_LOG_ERROR
, "Chapter end time %"PRId64
" before start %"PRId64
"\n", end
, start
);
3731 for (i
= 0; i
< s
->nb_chapters
; i
++)
3732 if (s
->chapters
[i
]->id
== id
)
3733 chapter
= s
->chapters
[i
];
3736 chapter
= av_mallocz(sizeof(AVChapter
));
3739 dynarray_add(&s
->chapters
, &s
->nb_chapters
, chapter
);
3741 av_dict_set(&chapter
->metadata
, "title", title
, 0);
3743 chapter
->time_base
= time_base
;
3744 chapter
->start
= start
;
3750 void ff_program_add_stream_index(AVFormatContext
*ac
, int progid
, unsigned idx
)
3753 AVProgram
*program
= NULL
;
3756 if (idx
>= ac
->nb_streams
) {
3757 av_log(ac
, AV_LOG_ERROR
, "stream index %d is not valid\n", idx
);
3761 for (i
= 0; i
< ac
->nb_programs
; i
++) {
3762 if (ac
->programs
[i
]->id
!= progid
)
3764 program
= ac
->programs
[i
];
3765 for (j
= 0; j
< program
->nb_stream_indexes
; j
++)
3766 if (program
->stream_index
[j
] == idx
)
3769 tmp
= av_realloc_array(program
->stream_index
, program
->nb_stream_indexes
+1, sizeof(unsigned int));
3772 program
->stream_index
= tmp
;
3773 program
->stream_index
[program
->nb_stream_indexes
++] = idx
;
3778 uint64_t ff_ntp_time(void)
3780 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US
;
3783 int av_get_frame_filename(char *buf
, int buf_size
, const char *path
, int number
)
3786 char *q
, buf1
[20], c
;
3787 int nd
, len
, percentd_found
;
3799 while (av_isdigit(*p
))
3800 nd
= nd
* 10 + *p
++ - '0';
3802 } while (av_isdigit(c
));
3811 snprintf(buf1
, sizeof(buf1
), "%0*d", nd
, number
);
3813 if ((q
- buf
+ len
) > buf_size
- 1)
3815 memcpy(q
, buf1
, len
);
3823 if ((q
- buf
) < buf_size
- 1)
3827 if (!percentd_found
)
3836 void av_url_split(char *proto
, int proto_size
,
3837 char *authorization
, int authorization_size
,
3838 char *hostname
, int hostname_size
,
3839 int *port_ptr
, char *path
, int path_size
, const char *url
)
3841 const char *p
, *ls
, *ls2
, *at
, *at2
, *col
, *brk
;
3847 if (authorization_size
> 0)
3848 authorization
[0] = 0;
3849 if (hostname_size
> 0)
3854 /* parse protocol */
3855 if ((p
= strchr(url
, ':'))) {
3856 av_strlcpy(proto
, url
, FFMIN(proto_size
, p
+ 1 - url
));
3863 /* no protocol means plain filename */
3864 av_strlcpy(path
, url
, path_size
);
3868 /* separate path from hostname */
3869 ls
= strchr(p
, '/');
3870 ls2
= strchr(p
, '?');
3874 ls
= FFMIN(ls
, ls2
);
3876 av_strlcpy(path
, ls
, path_size
);
3878 ls
= &p
[strlen(p
)]; // XXX
3880 /* the rest is hostname, use that to parse auth/port */
3882 /* authorization (user[:pass]@hostname) */
3884 while ((at
= strchr(p
, '@')) && at
< ls
) {
3885 av_strlcpy(authorization
, at2
,
3886 FFMIN(authorization_size
, at
+ 1 - at2
));
3887 p
= at
+ 1; /* skip '@' */
3890 if (*p
== '[' && (brk
= strchr(p
, ']')) && brk
< ls
) {
3892 av_strlcpy(hostname
, p
+ 1,
3893 FFMIN(hostname_size
, brk
- p
));
3894 if (brk
[1] == ':' && port_ptr
)
3895 *port_ptr
= atoi(brk
+ 2);
3896 } else if ((col
= strchr(p
, ':')) && col
< ls
) {
3897 av_strlcpy(hostname
, p
,
3898 FFMIN(col
+ 1 - p
, hostname_size
));
3900 *port_ptr
= atoi(col
+ 1);
3902 av_strlcpy(hostname
, p
,
3903 FFMIN(ls
+ 1 - p
, hostname_size
));
3907 char *ff_data_to_hex(char *buff
, const uint8_t *src
, int s
, int lowercase
)
3910 static const char hex_table_uc
[16] = { '0', '1', '2', '3',
3913 'C', 'D', 'E', 'F' };
3914 static const char hex_table_lc
[16] = { '0', '1', '2', '3',
3917 'c', 'd', 'e', 'f' };
3918 const char *hex_table
= lowercase
? hex_table_lc
: hex_table_uc
;
3920 for (i
= 0; i
< s
; i
++) {
3921 buff
[i
* 2] = hex_table
[src
[i
] >> 4];
3922 buff
[i
* 2 + 1] = hex_table
[src
[i
] & 0xF];
3928 int ff_hex_to_data(uint8_t *data
, const char *p
)
3935 p
+= strspn(p
, SPACE_CHARS
);
3938 c
= av_toupper((unsigned char) *p
++);
3939 if (c
>= '0' && c
<= '9')
3941 else if (c
>= 'A' && c
<= 'F')
3956 void avpriv_set_pts_info(AVStream
*s
, int pts_wrap_bits
,
3957 unsigned int pts_num
, unsigned int pts_den
)
3960 if (av_reduce(&new_tb
.num
, &new_tb
.den
, pts_num
, pts_den
, INT_MAX
)) {
3961 if (new_tb
.num
!= pts_num
)
3962 av_log(NULL
, AV_LOG_DEBUG
,
3963 "st:%d removing common factor %d from timebase\n",
3964 s
->index
, pts_num
/ new_tb
.num
);
3966 av_log(NULL
, AV_LOG_WARNING
,
3967 "st:%d has too large timebase, reducing\n", s
->index
);
3969 if (new_tb
.num
<= 0 || new_tb
.den
<= 0) {
3970 av_log(NULL
, AV_LOG_ERROR
,
3971 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
3972 new_tb
.num
, new_tb
.den
,
3976 s
->time_base
= new_tb
;
3977 av_codec_set_pkt_timebase(s
->codec
, new_tb
);
3978 s
->pts_wrap_bits
= pts_wrap_bits
;
3981 void ff_parse_key_value(const char *str
, ff_parse_key_val_cb callback_get_buf
,
3984 const char *ptr
= str
;
3986 /* Parse key=value pairs. */
3989 char *dest
= NULL
, *dest_end
;
3990 int key_len
, dest_len
= 0;
3992 /* Skip whitespace and potential commas. */
3993 while (*ptr
&& (av_isspace(*ptr
) || *ptr
== ','))
4000 if (!(ptr
= strchr(key
, '=')))
4003 key_len
= ptr
- key
;
4005 callback_get_buf(context
, key
, key_len
, &dest
, &dest_len
);
4006 dest_end
= dest
+ dest_len
- 1;
4010 while (*ptr
&& *ptr
!= '\"') {
4014 if (dest
&& dest
< dest_end
)
4018 if (dest
&& dest
< dest_end
)
4026 for (; *ptr
&& !(av_isspace(*ptr
) || *ptr
== ','); ptr
++)
4027 if (dest
&& dest
< dest_end
)
4035 int ff_find_stream_index(AVFormatContext
*s
, int id
)
4038 for (i
= 0; i
< s
->nb_streams
; i
++)
4039 if (s
->streams
[i
]->id
== id
)
4044 int64_t ff_iso8601_to_unix_time(const char *datestr
)
4046 struct tm time1
= { 0 }, time2
= { 0 };
4048 ret1
= av_small_strptime(datestr
, "%Y - %m - %d %H:%M:%S", &time1
);
4049 ret2
= av_small_strptime(datestr
, "%Y - %m - %dT%H:%M:%S", &time2
);
4051 return av_timegm(&time2
);
4053 return av_timegm(&time1
);
4056 int avformat_query_codec(const AVOutputFormat
*ofmt
, enum AVCodecID codec_id
,
4060 if (ofmt
->query_codec
)
4061 return ofmt
->query_codec(codec_id
, std_compliance
);
4062 else if (ofmt
->codec_tag
)
4063 return !!av_codec_get_tag(ofmt
->codec_tag
, codec_id
);
4064 else if (codec_id
== ofmt
->video_codec
||
4065 codec_id
== ofmt
->audio_codec
||
4066 codec_id
== ofmt
->subtitle_codec
)
4069 return AVERROR_PATCHWELCOME
;
4072 int avformat_network_init(void)
4076 ff_network_inited_globally
= 1;
4077 if ((ret
= ff_network_init()) < 0)
4084 int avformat_network_deinit(void)
4093 int ff_add_param_change(AVPacket
*pkt
, int32_t channels
,
4094 uint64_t channel_layout
, int32_t sample_rate
,
4095 int32_t width
, int32_t height
)
4101 return AVERROR(EINVAL
);
4104 flags
|= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
;
4106 if (channel_layout
) {
4108 flags
|= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
;
4112 flags
|= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
;
4114 if (width
|| height
) {
4116 flags
|= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
;
4118 data
= av_packet_new_side_data(pkt
, AV_PKT_DATA_PARAM_CHANGE
, size
);
4120 return AVERROR(ENOMEM
);
4121 bytestream_put_le32(&data
, flags
);
4123 bytestream_put_le32(&data
, channels
);
4125 bytestream_put_le64(&data
, channel_layout
);
4127 bytestream_put_le32(&data
, sample_rate
);
4128 if (width
|| height
) {
4129 bytestream_put_le32(&data
, width
);
4130 bytestream_put_le32(&data
, height
);
4135 AVRational
av_guess_sample_aspect_ratio(AVFormatContext
*format
, AVStream
*stream
, AVFrame
*frame
)
4137 AVRational undef
= {0, 1};
4138 AVRational stream_sample_aspect_ratio
= stream
? stream
->sample_aspect_ratio
: undef
;
4139 AVRational codec_sample_aspect_ratio
= stream
&& stream
->codec
? stream
->codec
->sample_aspect_ratio
: undef
;
4140 AVRational frame_sample_aspect_ratio
= frame
? frame
->sample_aspect_ratio
: codec_sample_aspect_ratio
;
4142 av_reduce(&stream_sample_aspect_ratio
.num
, &stream_sample_aspect_ratio
.den
,
4143 stream_sample_aspect_ratio
.num
, stream_sample_aspect_ratio
.den
, INT_MAX
);
4144 if (stream_sample_aspect_ratio
.num
<= 0 || stream_sample_aspect_ratio
.den
<= 0)
4145 stream_sample_aspect_ratio
= undef
;
4147 av_reduce(&frame_sample_aspect_ratio
.num
, &frame_sample_aspect_ratio
.den
,
4148 frame_sample_aspect_ratio
.num
, frame_sample_aspect_ratio
.den
, INT_MAX
);
4149 if (frame_sample_aspect_ratio
.num
<= 0 || frame_sample_aspect_ratio
.den
<= 0)
4150 frame_sample_aspect_ratio
= undef
;
4152 if (stream_sample_aspect_ratio
.num
)
4153 return stream_sample_aspect_ratio
;
4155 return frame_sample_aspect_ratio
;
4158 AVRational
av_guess_frame_rate(AVFormatContext
*format
, AVStream
*st
, AVFrame
*frame
)
4160 AVRational fr
= st
->r_frame_rate
;
4161 AVRational codec_fr
= st
->codec
->framerate
;
4162 AVRational avg_fr
= st
->avg_frame_rate
;
4164 if (avg_fr
.num
> 0 && avg_fr
.den
> 0 && fr
.num
> 0 && fr
.den
> 0 &&
4165 av_q2d(avg_fr
) < 70 && av_q2d(fr
) > 210) {
4170 if (st
->codec
->ticks_per_frame
> 1) {
4171 if ( codec_fr
.num
> 0 && codec_fr
.den
> 0 && av_q2d(codec_fr
) < av_q2d(fr
)*0.7
4172 && fabs(1.0 - av_q2d(av_div_q(avg_fr
, fr
))) > 0.1)
4179 int avformat_match_stream_specifier(AVFormatContext
*s
, AVStream
*st
,
4182 if (*spec
<= '9' && *spec
>= '0') /* opt:index */
4183 return strtol(spec
, NULL
, 0) == st
->index
;
4184 else if (*spec
== 'v' || *spec
== 'a' || *spec
== 's' || *spec
== 'd' ||
4185 *spec
== 't') { /* opt:[vasdt] */
4186 enum AVMediaType type
;
4189 case 'v': type
= AVMEDIA_TYPE_VIDEO
; break;
4190 case 'a': type
= AVMEDIA_TYPE_AUDIO
; break;
4191 case 's': type
= AVMEDIA_TYPE_SUBTITLE
; break;
4192 case 'd': type
= AVMEDIA_TYPE_DATA
; break;
4193 case 't': type
= AVMEDIA_TYPE_ATTACHMENT
; break;
4194 default: av_assert0(0);
4196 if (type
!= st
->codec
->codec_type
)
4198 if (*spec
++ == ':') { /* possibly followed by :index */
4199 int i
, index
= strtol(spec
, NULL
, 0);
4200 for (i
= 0; i
< s
->nb_streams
; i
++)
4201 if (s
->streams
[i
]->codec
->codec_type
== type
&& index
-- == 0)
4202 return i
== st
->index
;
4206 } else if (*spec
== 'p' && *(spec
+ 1) == ':') {
4210 prog_id
= strtol(spec
, &endptr
, 0);
4211 for (i
= 0; i
< s
->nb_programs
; i
++) {
4212 if (s
->programs
[i
]->id
!= prog_id
)
4215 if (*endptr
++ == ':') {
4216 int stream_idx
= strtol(endptr
, NULL
, 0);
4217 return stream_idx
>= 0 &&
4218 stream_idx
< s
->programs
[i
]->nb_stream_indexes
&&
4219 st
->index
== s
->programs
[i
]->stream_index
[stream_idx
];
4222 for (j
= 0; j
< s
->programs
[i
]->nb_stream_indexes
; j
++)
4223 if (st
->index
== s
->programs
[i
]->stream_index
[j
])
4227 } else if (*spec
== '#' ||
4228 (*spec
== 'i' && *(spec
+ 1) == ':')) {
4231 spec
+= 1 + (*spec
== 'i');
4232 stream_id
= strtol(spec
, &endptr
, 0);
4234 return stream_id
== st
->id
;
4235 } else if (*spec
== 'm' && *(spec
+ 1) == ':') {
4236 AVDictionaryEntry
*tag
;
4241 val
= strchr(spec
, ':');
4243 key
= val
? av_strndup(spec
, val
- spec
) : av_strdup(spec
);
4245 return AVERROR(ENOMEM
);
4247 tag
= av_dict_get(st
->metadata
, key
, NULL
, 0);
4249 if (!val
|| !strcmp(tag
->value
, val
+ 1))
4258 } else if (!*spec
) /* empty specifier, matches everything */
4261 av_log(s
, AV_LOG_ERROR
, "Invalid stream specifier: %s.\n", spec
);
4262 return AVERROR(EINVAL
);
4265 int ff_generate_avci_extradata(AVStream
*st
)
4267 static const uint8_t avci100_1080p_extradata
[] = {
4269 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4270 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4271 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4272 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4273 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4274 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4275 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4276 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4277 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4279 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4282 static const uint8_t avci100_1080i_extradata
[] = {
4284 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4285 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4286 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4287 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4288 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4289 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4290 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4291 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4292 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4293 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4294 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4296 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4299 static const uint8_t avci50_1080p_extradata
[] = {
4301 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4302 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4303 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4304 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4305 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4306 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4307 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4308 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4309 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4311 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4314 static const uint8_t avci50_1080i_extradata
[] = {
4316 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4317 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4318 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4319 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4320 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4321 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4322 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4323 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4324 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4325 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4326 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4328 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4331 static const uint8_t avci100_720p_extradata
[] = {
4333 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4334 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4335 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4336 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4337 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4338 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4339 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4340 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4341 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4342 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4344 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4347 static const uint8_t avci50_720p_extradata
[] = {
4349 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4350 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4351 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4352 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4353 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4354 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4355 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4356 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4357 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4359 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4363 const uint8_t *data
= NULL
;
4366 if (st
->codec
->width
== 1920) {
4367 if (st
->codec
->field_order
== AV_FIELD_PROGRESSIVE
) {
4368 data
= avci100_1080p_extradata
;
4369 size
= sizeof(avci100_1080p_extradata
);
4371 data
= avci100_1080i_extradata
;
4372 size
= sizeof(avci100_1080i_extradata
);
4374 } else if (st
->codec
->width
== 1440) {
4375 if (st
->codec
->field_order
== AV_FIELD_PROGRESSIVE
) {
4376 data
= avci50_1080p_extradata
;
4377 size
= sizeof(avci50_1080p_extradata
);
4379 data
= avci50_1080i_extradata
;
4380 size
= sizeof(avci50_1080i_extradata
);
4382 } else if (st
->codec
->width
== 1280) {
4383 data
= avci100_720p_extradata
;
4384 size
= sizeof(avci100_720p_extradata
);
4385 } else if (st
->codec
->width
== 960) {
4386 data
= avci50_720p_extradata
;
4387 size
= sizeof(avci50_720p_extradata
);
4393 av_freep(&st
->codec
->extradata
);
4394 if (ff_alloc_extradata(st
->codec
, size
))
4395 return AVERROR(ENOMEM
);
4396 memcpy(st
->codec
->extradata
, data
, size
);
4401 uint8_t *av_stream_get_side_data(AVStream
*st
, enum AVPacketSideDataType type
,
4406 for (i
= 0; i
< st
->nb_side_data
; i
++) {
4407 if (st
->side_data
[i
].type
== type
) {
4409 *size
= st
->side_data
[i
].size
;
4410 return st
->side_data
[i
].data
;