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"
58 * various utility functions for use within FFmpeg
61 unsigned avformat_version(void)
63 av_assert0(LIBAVFORMAT_VERSION_MICRO
>= 100);
64 return LIBAVFORMAT_VERSION_INT
;
67 const char *avformat_configuration(void)
69 return FFMPEG_CONFIGURATION
;
72 const char *avformat_license(void)
74 #define LICENSE_PREFIX "libavformat license: "
75 return LICENSE_PREFIX FFMPEG_LICENSE
+ sizeof(LICENSE_PREFIX
) - 1;
78 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
80 static int is_relative(int64_t ts
) {
81 return ts
> (RELATIVE_TS_BASE
- (1LL<<48));
85 * Wrap a given time stamp, if there is an indication for an overflow
88 * @param timestamp the time stamp to wrap
89 * @return resulting time stamp
91 static int64_t wrap_timestamp(AVStream
*st
, int64_t timestamp
)
93 if (st
->pts_wrap_behavior
!= AV_PTS_WRAP_IGNORE
&&
94 st
->pts_wrap_reference
!= AV_NOPTS_VALUE
&& timestamp
!= AV_NOPTS_VALUE
) {
95 if (st
->pts_wrap_behavior
== AV_PTS_WRAP_ADD_OFFSET
&&
96 timestamp
< st
->pts_wrap_reference
)
97 return timestamp
+ (1ULL << st
->pts_wrap_bits
);
98 else if (st
->pts_wrap_behavior
== AV_PTS_WRAP_SUB_OFFSET
&&
99 timestamp
>= st
->pts_wrap_reference
)
100 return timestamp
- (1ULL << st
->pts_wrap_bits
);
105 MAKE_ACCESSORS(AVStream
, stream
, AVRational
, r_frame_rate
)
106 MAKE_ACCESSORS(AVStream
, stream
, char *, recommended_encoder_configuration
)
107 MAKE_ACCESSORS(AVFormatContext
, format
, AVCodec
*, video_codec
)
108 MAKE_ACCESSORS(AVFormatContext
, format
, AVCodec
*, audio_codec
)
109 MAKE_ACCESSORS(AVFormatContext
, format
, AVCodec
*, subtitle_codec
)
110 MAKE_ACCESSORS(AVFormatContext
, format
, int, metadata_header_padding
)
111 MAKE_ACCESSORS(AVFormatContext
, format
, void *, opaque
)
112 MAKE_ACCESSORS(AVFormatContext
, format
, av_format_control_message
, control_message_cb
)
114 int64_t av_stream_get_end_pts(const AVStream
*st
)
119 struct AVCodecParserContext
*av_stream_get_parser(const AVStream
*st
)
124 void av_format_inject_global_side_data(AVFormatContext
*s
)
127 s
->internal
->inject_global_side_data
= 1;
128 for (i
= 0; i
< s
->nb_streams
; i
++) {
129 AVStream
*st
= s
->streams
[i
];
130 st
->inject_global_side_data
= 1;
134 int ff_copy_whitelists(AVFormatContext
*dst
, AVFormatContext
*src
)
136 av_assert0(!dst
->codec_whitelist
&& !dst
->format_whitelist
);
137 dst
-> codec_whitelist
= av_strdup(src
->codec_whitelist
);
138 dst
->format_whitelist
= av_strdup(src
->format_whitelist
);
139 if ( (src
-> codec_whitelist
&& !dst
-> codec_whitelist
)
140 || (src
->format_whitelist
&& !dst
->format_whitelist
)) {
141 av_log(dst
, AV_LOG_ERROR
, "Failed to duplicate whitelist\n");
142 return AVERROR(ENOMEM
);
147 static const AVCodec
*find_decoder(AVFormatContext
*s
, AVStream
*st
, enum AVCodecID codec_id
)
149 if (st
->codec
->codec
)
150 return st
->codec
->codec
;
152 switch (st
->codec
->codec_type
) {
153 case AVMEDIA_TYPE_VIDEO
:
154 if (s
->video_codec
) return s
->video_codec
;
156 case AVMEDIA_TYPE_AUDIO
:
157 if (s
->audio_codec
) return s
->audio_codec
;
159 case AVMEDIA_TYPE_SUBTITLE
:
160 if (s
->subtitle_codec
) return s
->subtitle_codec
;
164 return avcodec_find_decoder(codec_id
);
167 int av_format_get_probe_score(const AVFormatContext
*s
)
169 return s
->probe_score
;
172 /* an arbitrarily chosen "sane" max packet size -- 50M */
173 #define SANE_CHUNK_SIZE (50000000)
175 int ffio_limit(AVIOContext
*s
, int size
)
177 if (s
->maxsize
>= 0) {
178 int64_t remaining
= s
->maxsize
- avio_tell(s
);
179 if (remaining
< size
) {
180 int64_t newsize
= avio_size(s
);
181 if (!s
->maxsize
|| s
->maxsize
<newsize
)
182 s
->maxsize
= newsize
- !newsize
;
183 remaining
= s
->maxsize
- avio_tell(s
);
184 remaining
= FFMAX(remaining
, 0);
187 if (s
->maxsize
>= 0 && remaining
+1 < size
) {
188 av_log(NULL
, remaining
? AV_LOG_ERROR
: AV_LOG_DEBUG
, "Truncating packet of size %d to %"PRId64
"\n", size
, remaining
+1);
195 /* Read the data in sane-sized chunks and append to pkt.
196 * Return the number of bytes read or an error. */
197 static int append_packet_chunked(AVIOContext
*s
, AVPacket
*pkt
, int size
)
199 int64_t orig_pos
= pkt
->pos
; // av_grow_packet might reset pos
200 int orig_size
= pkt
->size
;
204 int prev_size
= pkt
->size
;
207 /* When the caller requests a lot of data, limit it to the amount
208 * left in file or SANE_CHUNK_SIZE when it is not known. */
210 if (read_size
> SANE_CHUNK_SIZE
/10) {
211 read_size
= ffio_limit(s
, read_size
);
212 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
214 read_size
= FFMIN(read_size
, SANE_CHUNK_SIZE
);
217 ret
= av_grow_packet(pkt
, read_size
);
221 ret
= avio_read(s
, pkt
->data
+ prev_size
, read_size
);
222 if (ret
!= read_size
) {
223 av_shrink_packet(pkt
, prev_size
+ FFMAX(ret
, 0));
230 pkt
->flags
|= AV_PKT_FLAG_CORRUPT
;
235 return pkt
->size
> orig_size
? pkt
->size
- orig_size
: ret
;
238 int av_get_packet(AVIOContext
*s
, AVPacket
*pkt
, int size
)
243 pkt
->pos
= avio_tell(s
);
245 return append_packet_chunked(s
, pkt
, size
);
248 int av_append_packet(AVIOContext
*s
, AVPacket
*pkt
, int size
)
251 return av_get_packet(s
, pkt
, size
);
252 return append_packet_chunked(s
, pkt
, size
);
255 int av_filename_number_test(const char *filename
)
259 (av_get_frame_filename(buf
, sizeof(buf
), filename
, 1) >= 0);
262 static int set_codec_from_probe_data(AVFormatContext
*s
, AVStream
*st
,
265 static const struct {
268 enum AVMediaType type
;
270 { "aac", AV_CODEC_ID_AAC
, AVMEDIA_TYPE_AUDIO
},
271 { "ac3", AV_CODEC_ID_AC3
, AVMEDIA_TYPE_AUDIO
},
272 { "dts", AV_CODEC_ID_DTS
, AVMEDIA_TYPE_AUDIO
},
273 { "eac3", AV_CODEC_ID_EAC3
, AVMEDIA_TYPE_AUDIO
},
274 { "h264", AV_CODEC_ID_H264
, AVMEDIA_TYPE_VIDEO
},
275 { "hevc", AV_CODEC_ID_HEVC
, AVMEDIA_TYPE_VIDEO
},
276 { "loas", AV_CODEC_ID_AAC_LATM
, AVMEDIA_TYPE_AUDIO
},
277 { "m4v", AV_CODEC_ID_MPEG4
, AVMEDIA_TYPE_VIDEO
},
278 { "mp3", AV_CODEC_ID_MP3
, AVMEDIA_TYPE_AUDIO
},
279 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO
, AVMEDIA_TYPE_VIDEO
},
283 AVInputFormat
*fmt
= av_probe_input_format3(pd
, 1, &score
);
285 if (fmt
&& st
->request_probe
<= score
) {
287 av_log(s
, AV_LOG_DEBUG
,
288 "Probe with size=%d, packets=%d detected %s with score=%d\n",
289 pd
->buf_size
, MAX_PROBE_PACKETS
- st
->probe_packets
,
291 for (i
= 0; fmt_id_type
[i
].name
; i
++) {
292 if (!strcmp(fmt
->name
, fmt_id_type
[i
].name
)) {
293 st
->codec
->codec_id
= fmt_id_type
[i
].id
;
294 st
->codec
->codec_type
= fmt_id_type
[i
].type
;
302 /************************************************************/
303 /* input media file */
305 int av_demuxer_open(AVFormatContext
*ic
) {
308 if (ic
->format_whitelist
&& av_match_list(ic
->iformat
->name
, ic
->format_whitelist
, ',') <= 0) {
309 av_log(ic
, AV_LOG_ERROR
, "Format not on whitelist\n");
310 return AVERROR(EINVAL
);
313 if (ic
->iformat
->read_header
) {
314 err
= ic
->iformat
->read_header(ic
);
319 if (ic
->pb
&& !ic
->data_offset
)
320 ic
->data_offset
= avio_tell(ic
->pb
);
325 /* Open input file and probe the format if necessary. */
326 static int init_input(AVFormatContext
*s
, const char *filename
,
327 AVDictionary
**options
)
330 AVProbeData pd
= { filename
, NULL
, 0 };
331 int score
= AVPROBE_SCORE_RETRY
;
334 s
->flags
|= AVFMT_FLAG_CUSTOM_IO
;
336 return av_probe_input_buffer2(s
->pb
, &s
->iformat
, filename
,
337 s
, 0, s
->format_probesize
);
338 else if (s
->iformat
->flags
& AVFMT_NOFILE
)
339 av_log(s
, AV_LOG_WARNING
, "Custom AVIOContext makes no sense and "
340 "will be ignored with AVFMT_NOFILE format.\n");
344 if ((s
->iformat
&& s
->iformat
->flags
& AVFMT_NOFILE
) ||
345 (!s
->iformat
&& (s
->iformat
= av_probe_input_format2(&pd
, 0, &score
))))
348 if ((ret
= avio_open2(&s
->pb
, filename
, AVIO_FLAG_READ
| s
->avio_flags
,
349 &s
->interrupt_callback
, options
)) < 0)
353 return av_probe_input_buffer2(s
->pb
, &s
->iformat
, filename
,
354 s
, 0, s
->format_probesize
);
357 static AVPacket
*add_to_pktbuf(AVPacketList
**packet_buffer
, AVPacket
*pkt
,
358 AVPacketList
**plast_pktl
)
360 AVPacketList
*pktl
= av_mallocz(sizeof(AVPacketList
));
365 (*plast_pktl
)->next
= pktl
;
367 *packet_buffer
= pktl
;
369 /* Add the packet in the buffered packet list. */
375 int avformat_queue_attached_pictures(AVFormatContext
*s
)
378 for (i
= 0; i
< s
->nb_streams
; i
++)
379 if (s
->streams
[i
]->disposition
& AV_DISPOSITION_ATTACHED_PIC
&&
380 s
->streams
[i
]->discard
< AVDISCARD_ALL
) {
381 AVPacket copy
= s
->streams
[i
]->attached_pic
;
382 if (copy
.size
<= 0) {
383 av_log(s
, AV_LOG_WARNING
,
384 "Attached picture on stream %d has invalid size, "
388 copy
.buf
= av_buffer_ref(copy
.buf
);
390 return AVERROR(ENOMEM
);
392 add_to_pktbuf(&s
->raw_packet_buffer
, ©
,
393 &s
->raw_packet_buffer_end
);
398 int avformat_open_input(AVFormatContext
**ps
, const char *filename
,
399 AVInputFormat
*fmt
, AVDictionary
**options
)
401 AVFormatContext
*s
= *ps
;
403 AVDictionary
*tmp
= NULL
;
404 ID3v2ExtraMeta
*id3v2_extra_meta
= NULL
;
406 if (!s
&& !(s
= avformat_alloc_context()))
407 return AVERROR(ENOMEM
);
409 av_log(NULL
, AV_LOG_ERROR
, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
410 return AVERROR(EINVAL
);
416 av_dict_copy(&tmp
, *options
, 0);
418 if ((ret
= av_opt_set_dict(s
, &tmp
)) < 0)
421 if ((ret
= init_input(s
, filename
, &tmp
)) < 0)
423 s
->probe_score
= ret
;
425 if (s
->format_whitelist
&& av_match_list(s
->iformat
->name
, s
->format_whitelist
, ',') <= 0) {
426 av_log(s
, AV_LOG_ERROR
, "Format not on whitelist\n");
427 ret
= AVERROR(EINVAL
);
431 avio_skip(s
->pb
, s
->skip_initial_bytes
);
433 /* Check filename in case an image number is expected. */
434 if (s
->iformat
->flags
& AVFMT_NEEDNUMBER
) {
435 if (!av_filename_number_test(filename
)) {
436 ret
= AVERROR(EINVAL
);
441 s
->duration
= s
->start_time
= AV_NOPTS_VALUE
;
442 av_strlcpy(s
->filename
, filename
? filename
: "", sizeof(s
->filename
));
444 /* Allocate private data. */
445 if (s
->iformat
->priv_data_size
> 0) {
446 if (!(s
->priv_data
= av_mallocz(s
->iformat
->priv_data_size
))) {
447 ret
= AVERROR(ENOMEM
);
450 if (s
->iformat
->priv_class
) {
451 *(const AVClass
**) s
->priv_data
= s
->iformat
->priv_class
;
452 av_opt_set_defaults(s
->priv_data
);
453 if ((ret
= av_opt_set_dict(s
->priv_data
, &tmp
)) < 0)
458 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
460 ff_id3v2_read(s
, ID3v2_DEFAULT_MAGIC
, &id3v2_extra_meta
, 0);
462 if (!(s
->flags
&AVFMT_FLAG_PRIV_OPT
) && s
->iformat
->read_header
)
463 if ((ret
= s
->iformat
->read_header(s
)) < 0)
466 if (id3v2_extra_meta
) {
467 if (!strcmp(s
->iformat
->name
, "mp3") || !strcmp(s
->iformat
->name
, "aac") ||
468 !strcmp(s
->iformat
->name
, "tta")) {
469 if ((ret
= ff_id3v2_parse_apic(s
, &id3v2_extra_meta
)) < 0)
472 av_log(s
, AV_LOG_DEBUG
, "demuxer does not support additional id3 data, skipping\n");
474 ff_id3v2_free_extra_meta(&id3v2_extra_meta
);
476 if ((ret
= avformat_queue_attached_pictures(s
)) < 0)
479 if (!(s
->flags
&AVFMT_FLAG_PRIV_OPT
) && s
->pb
&& !s
->data_offset
)
480 s
->data_offset
= avio_tell(s
->pb
);
482 s
->raw_packet_buffer_remaining_size
= RAW_PACKET_BUFFER_SIZE
;
485 av_dict_free(options
);
492 ff_id3v2_free_extra_meta(&id3v2_extra_meta
);
494 if (s
->pb
&& !(s
->flags
& AVFMT_FLAG_CUSTOM_IO
))
496 avformat_free_context(s
);
501 /*******************************************************/
503 static void force_codec_ids(AVFormatContext
*s
, AVStream
*st
)
505 switch (st
->codec
->codec_type
) {
506 case AVMEDIA_TYPE_VIDEO
:
507 if (s
->video_codec_id
)
508 st
->codec
->codec_id
= s
->video_codec_id
;
510 case AVMEDIA_TYPE_AUDIO
:
511 if (s
->audio_codec_id
)
512 st
->codec
->codec_id
= s
->audio_codec_id
;
514 case AVMEDIA_TYPE_SUBTITLE
:
515 if (s
->subtitle_codec_id
)
516 st
->codec
->codec_id
= s
->subtitle_codec_id
;
521 static int probe_codec(AVFormatContext
*s
, AVStream
*st
, const AVPacket
*pkt
)
523 if (st
->request_probe
>0) {
524 AVProbeData
*pd
= &st
->probe_data
;
526 av_log(s
, AV_LOG_DEBUG
, "probing stream %d pp:%d\n", st
->index
, st
->probe_packets
);
530 uint8_t *new_buf
= av_realloc(pd
->buf
, pd
->buf_size
+pkt
->size
+AVPROBE_PADDING_SIZE
);
532 av_log(s
, AV_LOG_WARNING
,
533 "Failed to reallocate probe buffer for stream %d\n",
538 memcpy(pd
->buf
+ pd
->buf_size
, pkt
->data
, pkt
->size
);
539 pd
->buf_size
+= pkt
->size
;
540 memset(pd
->buf
+ pd
->buf_size
, 0, AVPROBE_PADDING_SIZE
);
543 st
->probe_packets
= 0;
545 av_log(s
, AV_LOG_WARNING
,
546 "nothing to probe for stream %d\n", st
->index
);
550 end
= s
->raw_packet_buffer_remaining_size
<= 0
551 || st
->probe_packets
<= 0;
553 if (end
|| av_log2(pd
->buf_size
) != av_log2(pd
->buf_size
- pkt
->size
)) {
554 int score
= set_codec_from_probe_data(s
, st
, pd
);
555 if ( (st
->codec
->codec_id
!= AV_CODEC_ID_NONE
&& score
> AVPROBE_SCORE_STREAM_RETRY
)
559 st
->request_probe
= -1;
560 if (st
->codec
->codec_id
!= AV_CODEC_ID_NONE
) {
561 av_log(s
, AV_LOG_DEBUG
, "probed stream %d\n", st
->index
);
563 av_log(s
, AV_LOG_WARNING
, "probed stream %d failed\n", st
->index
);
565 force_codec_ids(s
, st
);
571 static int update_wrap_reference(AVFormatContext
*s
, AVStream
*st
, int stream_index
, AVPacket
*pkt
)
573 int64_t ref
= pkt
->dts
;
574 int i
, pts_wrap_behavior
;
575 int64_t pts_wrap_reference
;
576 AVProgram
*first_program
;
578 if (ref
== AV_NOPTS_VALUE
)
580 if (st
->pts_wrap_reference
!= AV_NOPTS_VALUE
|| st
->pts_wrap_bits
>= 63 || ref
== AV_NOPTS_VALUE
|| !s
->correct_ts_overflow
)
582 ref
&= (1LL << st
->pts_wrap_bits
)-1;
584 // reference time stamp should be 60 s before first time stamp
585 pts_wrap_reference
= ref
- av_rescale(60, st
->time_base
.den
, st
->time_base
.num
);
586 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
587 pts_wrap_behavior
= (ref
< (1LL << st
->pts_wrap_bits
) - (1LL << st
->pts_wrap_bits
-3)) ||
588 (ref
< (1LL << st
->pts_wrap_bits
) - av_rescale(60, st
->time_base
.den
, st
->time_base
.num
)) ?
589 AV_PTS_WRAP_ADD_OFFSET
: AV_PTS_WRAP_SUB_OFFSET
;
591 first_program
= av_find_program_from_stream(s
, NULL
, stream_index
);
593 if (!first_program
) {
594 int default_stream_index
= av_find_default_stream_index(s
);
595 if (s
->streams
[default_stream_index
]->pts_wrap_reference
== AV_NOPTS_VALUE
) {
596 for (i
= 0; i
< s
->nb_streams
; i
++) {
597 s
->streams
[i
]->pts_wrap_reference
= pts_wrap_reference
;
598 s
->streams
[i
]->pts_wrap_behavior
= pts_wrap_behavior
;
602 st
->pts_wrap_reference
= s
->streams
[default_stream_index
]->pts_wrap_reference
;
603 st
->pts_wrap_behavior
= s
->streams
[default_stream_index
]->pts_wrap_behavior
;
607 AVProgram
*program
= first_program
;
609 if (program
->pts_wrap_reference
!= AV_NOPTS_VALUE
) {
610 pts_wrap_reference
= program
->pts_wrap_reference
;
611 pts_wrap_behavior
= program
->pts_wrap_behavior
;
614 program
= av_find_program_from_stream(s
, program
, stream_index
);
617 // update every program with differing pts_wrap_reference
618 program
= first_program
;
620 if (program
->pts_wrap_reference
!= pts_wrap_reference
) {
621 for (i
= 0; i
<program
->nb_stream_indexes
; i
++) {
622 s
->streams
[program
->stream_index
[i
]]->pts_wrap_reference
= pts_wrap_reference
;
623 s
->streams
[program
->stream_index
[i
]]->pts_wrap_behavior
= pts_wrap_behavior
;
626 program
->pts_wrap_reference
= pts_wrap_reference
;
627 program
->pts_wrap_behavior
= pts_wrap_behavior
;
629 program
= av_find_program_from_stream(s
, program
, stream_index
);
635 int ff_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
641 AVPacketList
*pktl
= s
->raw_packet_buffer
;
645 st
= s
->streams
[pkt
->stream_index
];
646 if (s
->raw_packet_buffer_remaining_size
<= 0)
647 if ((err
= probe_codec(s
, st
, NULL
)) < 0)
649 if (st
->request_probe
<= 0) {
650 s
->raw_packet_buffer
= pktl
->next
;
651 s
->raw_packet_buffer_remaining_size
+= pkt
->size
;
660 ret
= s
->iformat
->read_packet(s
, pkt
);
662 if (!pktl
|| ret
== AVERROR(EAGAIN
))
664 for (i
= 0; i
< s
->nb_streams
; i
++) {
666 if (st
->probe_packets
)
667 if ((err
= probe_codec(s
, st
, NULL
)) < 0)
669 av_assert0(st
->request_probe
<= 0);
674 if ((s
->flags
& AVFMT_FLAG_DISCARD_CORRUPT
) &&
675 (pkt
->flags
& AV_PKT_FLAG_CORRUPT
)) {
676 av_log(s
, AV_LOG_WARNING
,
677 "Dropped corrupted packet (stream = %d)\n",
683 if (pkt
->stream_index
>= (unsigned)s
->nb_streams
) {
684 av_log(s
, AV_LOG_ERROR
, "Invalid stream index %d\n", pkt
->stream_index
);
688 st
= s
->streams
[pkt
->stream_index
];
690 if (update_wrap_reference(s
, st
, pkt
->stream_index
, pkt
) && st
->pts_wrap_behavior
== AV_PTS_WRAP_SUB_OFFSET
) {
691 // correct first time stamps to negative values
692 if (!is_relative(st
->first_dts
))
693 st
->first_dts
= wrap_timestamp(st
, st
->first_dts
);
694 if (!is_relative(st
->start_time
))
695 st
->start_time
= wrap_timestamp(st
, st
->start_time
);
696 if (!is_relative(st
->cur_dts
))
697 st
->cur_dts
= wrap_timestamp(st
, st
->cur_dts
);
700 pkt
->dts
= wrap_timestamp(st
, pkt
->dts
);
701 pkt
->pts
= wrap_timestamp(st
, pkt
->pts
);
703 force_codec_ids(s
, st
);
705 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
706 if (s
->use_wallclock_as_timestamps
)
707 pkt
->dts
= pkt
->pts
= av_rescale_q(av_gettime(), AV_TIME_BASE_Q
, st
->time_base
);
709 if (!pktl
&& st
->request_probe
<= 0)
712 add_to_pktbuf(&s
->raw_packet_buffer
, pkt
, &s
->raw_packet_buffer_end
);
713 s
->raw_packet_buffer_remaining_size
-= pkt
->size
;
715 if ((err
= probe_codec(s
, st
, pkt
)) < 0)
721 /**********************************************************/
723 static int determinable_frame_size(AVCodecContext
*avctx
)
725 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
726 avctx
->codec_id
== AV_CODEC_ID_MP1
||
727 avctx
->codec_id
== AV_CODEC_ID_MP2
||
728 avctx
->codec_id
== AV_CODEC_ID_MP3
/* ||
729 avctx->codec_id == AV_CODEC_ID_CELT*/)
735 * Return the frame duration in seconds. Return 0 if not available.
737 void ff_compute_frame_duration(AVFormatContext
*s
, int *pnum
, int *pden
, AVStream
*st
,
738 AVCodecParserContext
*pc
, AVPacket
*pkt
)
740 AVRational codec_framerate
= s
->iformat
? st
->codec
->framerate
:
741 av_mul_q(av_inv_q(st
->codec
->time_base
), (AVRational
){1, st
->codec
->ticks_per_frame
});
746 switch (st
->codec
->codec_type
) {
747 case AVMEDIA_TYPE_VIDEO
:
748 if (st
->r_frame_rate
.num
&& !pc
) {
749 *pnum
= st
->r_frame_rate
.den
;
750 *pden
= st
->r_frame_rate
.num
;
751 } else if (st
->time_base
.num
* 1000LL > st
->time_base
.den
) {
752 *pnum
= st
->time_base
.num
;
753 *pden
= st
->time_base
.den
;
754 } else if (codec_framerate
.den
* 1000LL > codec_framerate
.num
) {
755 av_assert0(st
->codec
->ticks_per_frame
);
756 av_reduce(pnum
, pden
,
758 codec_framerate
.num
* (int64_t)st
->codec
->ticks_per_frame
,
761 if (pc
&& pc
->repeat_pict
) {
762 av_assert0(s
->iformat
); // this may be wrong for interlaced encoding but its not used for that case
763 av_reduce(pnum
, pden
,
764 (*pnum
) * (1LL + pc
->repeat_pict
),
768 /* If this codec can be interlaced or progressive then we need
769 * a parser to compute duration of a packet. Thus if we have
770 * no parser in such case leave duration undefined. */
771 if (st
->codec
->ticks_per_frame
> 1 && !pc
)
775 case AVMEDIA_TYPE_AUDIO
:
776 frame_size
= av_get_audio_frame_duration(st
->codec
, pkt
->size
);
777 if (frame_size
<= 0 || st
->codec
->sample_rate
<= 0)
780 *pden
= st
->codec
->sample_rate
;
787 static int is_intra_only(AVCodecContext
*enc
) {
788 const AVCodecDescriptor
*desc
;
790 if (enc
->codec_type
!= AVMEDIA_TYPE_VIDEO
)
793 desc
= av_codec_get_codec_descriptor(enc
);
795 desc
= avcodec_descriptor_get(enc
->codec_id
);
796 av_codec_set_codec_descriptor(enc
, desc
);
799 return !!(desc
->props
& AV_CODEC_PROP_INTRA_ONLY
);
803 static int has_decode_delay_been_guessed(AVStream
*st
)
805 if (st
->codec
->codec_id
!= AV_CODEC_ID_H264
) return 1;
806 if (!st
->info
) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
808 #if CONFIG_H264_DECODER
809 if (st
->codec
->has_b_frames
&&
810 avpriv_h264_has_num_reorder_frames(st
->codec
) == st
->codec
->has_b_frames
)
813 if (st
->codec
->has_b_frames
<3)
814 return st
->nb_decoded_frames
>= 7;
815 else if (st
->codec
->has_b_frames
<4)
816 return st
->nb_decoded_frames
>= 18;
818 return st
->nb_decoded_frames
>= 20;
821 static AVPacketList
*get_next_pkt(AVFormatContext
*s
, AVStream
*st
, AVPacketList
*pktl
)
825 if (pktl
== s
->packet_buffer_end
)
826 return s
->parse_queue
;
830 static int64_t select_from_pts_buffer(AVStream
*st
, int64_t *pts_buffer
, int64_t dts
) {
831 int onein_oneout
= st
->codec
->codec_id
!= AV_CODEC_ID_H264
&&
832 st
->codec
->codec_id
!= AV_CODEC_ID_HEVC
;
835 int delay
= st
->codec
->has_b_frames
;
838 if (dts
== AV_NOPTS_VALUE
) {
839 int64_t best_score
= INT64_MAX
;
840 for (i
= 0; i
<delay
; i
++) {
841 if (st
->pts_reorder_error_count
[i
]) {
842 int64_t score
= st
->pts_reorder_error
[i
] / st
->pts_reorder_error_count
[i
];
843 if (score
< best_score
) {
850 for (i
= 0; i
<delay
; i
++) {
851 if (pts_buffer
[i
] != AV_NOPTS_VALUE
) {
852 int64_t diff
= FFABS(pts_buffer
[i
] - dts
)
853 + (uint64_t)st
->pts_reorder_error
[i
];
854 diff
= FFMAX(diff
, st
->pts_reorder_error
[i
]);
855 st
->pts_reorder_error
[i
] = diff
;
856 st
->pts_reorder_error_count
[i
]++;
857 if (st
->pts_reorder_error_count
[i
] > 250) {
858 st
->pts_reorder_error
[i
] >>= 1;
859 st
->pts_reorder_error_count
[i
] >>= 1;
866 if (dts
== AV_NOPTS_VALUE
)
872 static void update_initial_timestamps(AVFormatContext
*s
, int stream_index
,
873 int64_t dts
, int64_t pts
, AVPacket
*pkt
)
875 AVStream
*st
= s
->streams
[stream_index
];
876 AVPacketList
*pktl
= s
->packet_buffer
? s
->packet_buffer
: s
->parse_queue
;
877 int64_t pts_buffer
[MAX_REORDER_DELAY
+1];
881 if (st
->first_dts
!= AV_NOPTS_VALUE
||
882 dts
== AV_NOPTS_VALUE
||
883 st
->cur_dts
== AV_NOPTS_VALUE
||
887 delay
= st
->codec
->has_b_frames
;
888 st
->first_dts
= dts
- (st
->cur_dts
- RELATIVE_TS_BASE
);
890 shift
= st
->first_dts
- RELATIVE_TS_BASE
;
892 for (i
= 0; i
<MAX_REORDER_DELAY
+1; i
++)
893 pts_buffer
[i
] = AV_NOPTS_VALUE
;
895 if (is_relative(pts
))
898 for (; pktl
; pktl
= get_next_pkt(s
, st
, pktl
)) {
899 if (pktl
->pkt
.stream_index
!= stream_index
)
901 if (is_relative(pktl
->pkt
.pts
))
902 pktl
->pkt
.pts
+= shift
;
904 if (is_relative(pktl
->pkt
.dts
))
905 pktl
->pkt
.dts
+= shift
;
907 if (st
->start_time
== AV_NOPTS_VALUE
&& pktl
->pkt
.pts
!= AV_NOPTS_VALUE
)
908 st
->start_time
= pktl
->pkt
.pts
;
910 if (pktl
->pkt
.pts
!= AV_NOPTS_VALUE
&& delay
<= MAX_REORDER_DELAY
&& has_decode_delay_been_guessed(st
)) {
911 pts_buffer
[0] = pktl
->pkt
.pts
;
912 for (i
= 0; i
<delay
&& pts_buffer
[i
] > pts_buffer
[i
+ 1]; i
++)
913 FFSWAP(int64_t, pts_buffer
[i
], pts_buffer
[i
+ 1]);
915 pktl
->pkt
.dts
= select_from_pts_buffer(st
, pts_buffer
, pktl
->pkt
.dts
);
919 if (st
->start_time
== AV_NOPTS_VALUE
)
920 st
->start_time
= pts
;
923 static void update_initial_durations(AVFormatContext
*s
, AVStream
*st
,
924 int stream_index
, int duration
)
926 AVPacketList
*pktl
= s
->packet_buffer
? s
->packet_buffer
: s
->parse_queue
;
927 int64_t cur_dts
= RELATIVE_TS_BASE
;
929 if (st
->first_dts
!= AV_NOPTS_VALUE
) {
930 if (st
->update_initial_durations_done
)
932 st
->update_initial_durations_done
= 1;
933 cur_dts
= st
->first_dts
;
934 for (; pktl
; pktl
= get_next_pkt(s
, st
, pktl
)) {
935 if (pktl
->pkt
.stream_index
== stream_index
) {
936 if (pktl
->pkt
.pts
!= pktl
->pkt
.dts
||
937 pktl
->pkt
.dts
!= AV_NOPTS_VALUE
||
943 if (pktl
&& pktl
->pkt
.dts
!= st
->first_dts
) {
944 av_log(s
, AV_LOG_DEBUG
, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
945 av_ts2str(st
->first_dts
), av_ts2str(pktl
->pkt
.dts
), av_ts2str(pktl
->pkt
.pts
), pktl
->pkt
.duration
);
949 av_log(s
, AV_LOG_DEBUG
, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st
->first_dts
));
952 pktl
= s
->packet_buffer
? s
->packet_buffer
: s
->parse_queue
;
953 st
->first_dts
= cur_dts
;
954 } else if (st
->cur_dts
!= RELATIVE_TS_BASE
)
957 for (; pktl
; pktl
= get_next_pkt(s
, st
, pktl
)) {
958 if (pktl
->pkt
.stream_index
!= stream_index
)
960 if (pktl
->pkt
.pts
== pktl
->pkt
.dts
&&
961 (pktl
->pkt
.dts
== AV_NOPTS_VALUE
|| pktl
->pkt
.dts
== st
->first_dts
) &&
962 !pktl
->pkt
.duration
) {
963 pktl
->pkt
.dts
= cur_dts
;
964 if (!st
->codec
->has_b_frames
)
965 pktl
->pkt
.pts
= cur_dts
;
966 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
967 pktl
->pkt
.duration
= duration
;
970 cur_dts
= pktl
->pkt
.dts
+ pktl
->pkt
.duration
;
973 st
->cur_dts
= cur_dts
;
976 static void compute_pkt_fields(AVFormatContext
*s
, AVStream
*st
,
977 AVCodecParserContext
*pc
, AVPacket
*pkt
)
979 int num
, den
, presentation_delayed
, delay
, i
;
982 int onein_oneout
= st
->codec
->codec_id
!= AV_CODEC_ID_H264
&&
983 st
->codec
->codec_id
!= AV_CODEC_ID_HEVC
;
985 if (s
->flags
& AVFMT_FLAG_NOFILLIN
)
988 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&& pkt
->dts
!= AV_NOPTS_VALUE
) {
989 if (pkt
->dts
== pkt
->pts
&& st
->last_dts_for_order_check
!= AV_NOPTS_VALUE
) {
990 if (st
->last_dts_for_order_check
<= pkt
->dts
) {
993 av_log(s
, st
->dts_misordered
? AV_LOG_DEBUG
: AV_LOG_WARNING
,
994 "DTS %"PRIi64
" < %"PRIi64
" out of order\n",
996 st
->last_dts_for_order_check
);
997 st
->dts_misordered
++;
999 if (st
->dts_ordered
+ st
->dts_misordered
> 250) {
1000 st
->dts_ordered
>>= 1;
1001 st
->dts_misordered
>>= 1;
1005 st
->last_dts_for_order_check
= pkt
->dts
;
1006 if (st
->dts_ordered
< 8*st
->dts_misordered
&& pkt
->dts
== pkt
->pts
)
1007 pkt
->dts
= AV_NOPTS_VALUE
;
1010 if ((s
->flags
& AVFMT_FLAG_IGNDTS
) && pkt
->pts
!= AV_NOPTS_VALUE
)
1011 pkt
->dts
= AV_NOPTS_VALUE
;
1013 if (pc
&& pc
->pict_type
== AV_PICTURE_TYPE_B
1014 && !st
->codec
->has_b_frames
)
1015 //FIXME Set low_delay = 0 when has_b_frames = 1
1016 st
->codec
->has_b_frames
= 1;
1018 /* do we have a video B-frame ? */
1019 delay
= st
->codec
->has_b_frames
;
1020 presentation_delayed
= 0;
1022 /* XXX: need has_b_frame, but cannot get it if the codec is
1023 * not initialized */
1025 pc
&& pc
->pict_type
!= AV_PICTURE_TYPE_B
)
1026 presentation_delayed
= 1;
1028 if (pkt
->pts
!= AV_NOPTS_VALUE
&& pkt
->dts
!= AV_NOPTS_VALUE
&&
1029 st
->pts_wrap_bits
< 63 &&
1030 pkt
->dts
- (1LL << (st
->pts_wrap_bits
- 1)) > pkt
->pts
) {
1031 if (is_relative(st
->cur_dts
) || pkt
->dts
- (1LL<<(st
->pts_wrap_bits
- 1)) > st
->cur_dts
) {
1032 pkt
->dts
-= 1LL << st
->pts_wrap_bits
;
1034 pkt
->pts
+= 1LL << st
->pts_wrap_bits
;
1037 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1038 * We take the conservative approach and discard both.
1039 * Note: If this is misbehaving for an H.264 file, then possibly
1040 * presentation_delayed is not set correctly. */
1041 if (delay
== 1 && pkt
->dts
== pkt
->pts
&&
1042 pkt
->dts
!= AV_NOPTS_VALUE
&& presentation_delayed
) {
1043 av_log(s
, AV_LOG_DEBUG
, "invalid dts/pts combination %"PRIi64
"\n", pkt
->dts
);
1044 if ( strcmp(s
->iformat
->name
, "mov,mp4,m4a,3gp,3g2,mj2")
1045 && strcmp(s
->iformat
->name
, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1046 pkt
->dts
= AV_NOPTS_VALUE
;
1049 duration
= av_mul_q((AVRational
) {pkt
->duration
, 1}, st
->time_base
);
1050 if (pkt
->duration
== 0) {
1051 ff_compute_frame_duration(s
, &num
, &den
, st
, pc
, pkt
);
1053 duration
= (AVRational
) {num
, den
};
1054 pkt
->duration
= av_rescale_rnd(1,
1055 num
* (int64_t) st
->time_base
.den
,
1056 den
* (int64_t) st
->time_base
.num
,
1061 if (pkt
->duration
!= 0 && (s
->packet_buffer
|| s
->parse_queue
))
1062 update_initial_durations(s
, st
, pkt
->stream_index
, pkt
->duration
);
1064 /* Correct timestamps with byte offset if demuxers only have timestamps
1065 * on packet boundaries */
1066 if (pc
&& st
->need_parsing
== AVSTREAM_PARSE_TIMESTAMPS
&& pkt
->size
) {
1067 /* this will estimate bitrate based on this frame's duration and size */
1068 offset
= av_rescale(pc
->offset
, pkt
->duration
, pkt
->size
);
1069 if (pkt
->pts
!= AV_NOPTS_VALUE
)
1071 if (pkt
->dts
!= AV_NOPTS_VALUE
)
1075 /* This may be redundant, but it should not hurt. */
1076 if (pkt
->dts
!= AV_NOPTS_VALUE
&&
1077 pkt
->pts
!= AV_NOPTS_VALUE
&&
1078 pkt
->pts
> pkt
->dts
)
1079 presentation_delayed
= 1;
1082 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d delay:%d onein_oneout:%d\n",
1083 presentation_delayed
, av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
), av_ts2str(st
->cur_dts
),
1084 pkt
->stream_index
, pc
, pkt
->duration
, delay
, onein_oneout
);
1085 /* Interpolate PTS and DTS if they are not present. We skip H264
1086 * currently because delay and has_b_frames are not reliably set. */
1087 if ((delay
== 0 || (delay
== 1 && pc
)) &&
1089 if (presentation_delayed
) {
1090 /* DTS = decompression timestamp */
1091 /* PTS = presentation timestamp */
1092 if (pkt
->dts
== AV_NOPTS_VALUE
)
1093 pkt
->dts
= st
->last_IP_pts
;
1094 update_initial_timestamps(s
, pkt
->stream_index
, pkt
->dts
, pkt
->pts
, pkt
);
1095 if (pkt
->dts
== AV_NOPTS_VALUE
)
1096 pkt
->dts
= st
->cur_dts
;
1098 /* This is tricky: the dts must be incremented by the duration
1099 * of the frame we are displaying, i.e. the last I- or P-frame. */
1100 if (st
->last_IP_duration
== 0)
1101 st
->last_IP_duration
= pkt
->duration
;
1102 if (pkt
->dts
!= AV_NOPTS_VALUE
)
1103 st
->cur_dts
= pkt
->dts
+ st
->last_IP_duration
;
1104 st
->last_IP_duration
= pkt
->duration
;
1105 st
->last_IP_pts
= pkt
->pts
;
1106 /* Cannot compute PTS if not present (we can compute it only
1107 * by knowing the future. */
1108 } else if (pkt
->pts
!= AV_NOPTS_VALUE
||
1109 pkt
->dts
!= AV_NOPTS_VALUE
||
1112 /* presentation is not delayed : PTS and DTS are the same */
1113 if (pkt
->pts
== AV_NOPTS_VALUE
)
1114 pkt
->pts
= pkt
->dts
;
1115 update_initial_timestamps(s
, pkt
->stream_index
, pkt
->pts
,
1117 if (pkt
->pts
== AV_NOPTS_VALUE
)
1118 pkt
->pts
= st
->cur_dts
;
1119 pkt
->dts
= pkt
->pts
;
1120 if (pkt
->pts
!= AV_NOPTS_VALUE
)
1121 st
->cur_dts
= av_add_stable(st
->time_base
, pkt
->pts
, duration
, 1);
1125 if (pkt
->pts
!= AV_NOPTS_VALUE
&& delay
<= MAX_REORDER_DELAY
&& has_decode_delay_been_guessed(st
)) {
1126 st
->pts_buffer
[0] = pkt
->pts
;
1127 for (i
= 0; i
<delay
&& st
->pts_buffer
[i
] > st
->pts_buffer
[i
+ 1]; i
++)
1128 FFSWAP(int64_t, st
->pts_buffer
[i
], st
->pts_buffer
[i
+ 1]);
1130 pkt
->dts
= select_from_pts_buffer(st
, st
->pts_buffer
, pkt
->dts
);
1132 // We skipped it above so we try here.
1134 // This should happen on the first packet
1135 update_initial_timestamps(s
, pkt
->stream_index
, pkt
->dts
, pkt
->pts
, pkt
);
1136 if (pkt
->dts
> st
->cur_dts
)
1137 st
->cur_dts
= pkt
->dts
;
1139 av_dlog(NULL
, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1140 presentation_delayed
, delay
, av_ts2str(pkt
->pts
), av_ts2str(pkt
->dts
), av_ts2str(st
->cur_dts
));
1143 if (is_intra_only(st
->codec
))
1144 pkt
->flags
|= AV_PKT_FLAG_KEY
;
1146 pkt
->convergence_duration
= pc
->convergence_duration
;
1149 static void free_packet_buffer(AVPacketList
**pkt_buf
, AVPacketList
**pkt_buf_end
)
1152 AVPacketList
*pktl
= *pkt_buf
;
1153 *pkt_buf
= pktl
->next
;
1154 av_free_packet(&pktl
->pkt
);
1157 *pkt_buf_end
= NULL
;
1161 * Parse a packet, add all split parts to parse_queue.
1163 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1165 static int parse_packet(AVFormatContext
*s
, AVPacket
*pkt
, int stream_index
)
1167 AVPacket out_pkt
= { 0 }, flush_pkt
= { 0 };
1168 AVStream
*st
= s
->streams
[stream_index
];
1169 uint8_t *data
= pkt
? pkt
->data
: NULL
;
1170 int size
= pkt
? pkt
->size
: 0;
1171 int ret
= 0, got_output
= 0;
1174 av_init_packet(&flush_pkt
);
1177 } else if (!size
&& st
->parser
->flags
& PARSER_FLAG_COMPLETE_FRAMES
) {
1178 // preserve 0-size sync packets
1179 compute_pkt_fields(s
, st
, st
->parser
, pkt
);
1182 while (size
> 0 || (pkt
== &flush_pkt
&& got_output
)) {
1185 av_init_packet(&out_pkt
);
1186 len
= av_parser_parse2(st
->parser
, st
->codec
,
1187 &out_pkt
.data
, &out_pkt
.size
, data
, size
,
1188 pkt
->pts
, pkt
->dts
, pkt
->pos
);
1190 pkt
->pts
= pkt
->dts
= AV_NOPTS_VALUE
;
1192 /* increment read pointer */
1196 got_output
= !!out_pkt
.size
;
1201 if (pkt
->side_data
) {
1202 out_pkt
.side_data
= pkt
->side_data
;
1203 out_pkt
.side_data_elems
= pkt
->side_data_elems
;
1204 pkt
->side_data
= NULL
;
1205 pkt
->side_data_elems
= 0;
1208 /* set the duration */
1209 out_pkt
.duration
= 0;
1210 if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
1211 if (st
->codec
->sample_rate
> 0) {
1213 av_rescale_q_rnd(st
->parser
->duration
,
1214 (AVRational
) { 1, st
->codec
->sample_rate
},
1220 out_pkt
.stream_index
= st
->index
;
1221 out_pkt
.pts
= st
->parser
->pts
;
1222 out_pkt
.dts
= st
->parser
->dts
;
1223 out_pkt
.pos
= st
->parser
->pos
;
1225 if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
)
1226 out_pkt
.pos
= st
->parser
->frame_offset
;
1228 if (st
->parser
->key_frame
== 1 ||
1229 (st
->parser
->key_frame
== -1 &&
1230 st
->parser
->pict_type
== AV_PICTURE_TYPE_I
))
1231 out_pkt
.flags
|= AV_PKT_FLAG_KEY
;
1233 if (st
->parser
->key_frame
== -1 && st
->parser
->pict_type
==AV_PICTURE_TYPE_NONE
&& (pkt
->flags
&AV_PKT_FLAG_KEY
))
1234 out_pkt
.flags
|= AV_PKT_FLAG_KEY
;
1236 compute_pkt_fields(s
, st
, st
->parser
, &out_pkt
);
1238 if (out_pkt
.data
== pkt
->data
&& out_pkt
.size
== pkt
->size
) {
1239 out_pkt
.buf
= pkt
->buf
;
1241 #if FF_API_DESTRUCT_PACKET
1242 FF_DISABLE_DEPRECATION_WARNINGS
1243 out_pkt
.destruct
= pkt
->destruct
;
1244 pkt
->destruct
= NULL
;
1245 FF_ENABLE_DEPRECATION_WARNINGS
1248 if ((ret
= av_dup_packet(&out_pkt
)) < 0)
1251 if (!add_to_pktbuf(&s
->parse_queue
, &out_pkt
, &s
->parse_queue_end
)) {
1252 av_free_packet(&out_pkt
);
1253 ret
= AVERROR(ENOMEM
);
1258 /* end of the stream => close and free the parser */
1259 if (pkt
== &flush_pkt
) {
1260 av_parser_close(st
->parser
);
1265 av_free_packet(pkt
);
1269 static int read_from_packet_buffer(AVPacketList
**pkt_buffer
,
1270 AVPacketList
**pkt_buffer_end
,
1274 av_assert0(*pkt_buffer
);
1277 *pkt_buffer
= pktl
->next
;
1279 *pkt_buffer_end
= NULL
;
1284 static int64_t ts_to_samples(AVStream
*st
, int64_t ts
)
1286 return av_rescale(ts
, st
->time_base
.num
* st
->codec
->sample_rate
, st
->time_base
.den
);
1289 static int read_frame_internal(AVFormatContext
*s
, AVPacket
*pkt
)
1291 int ret
= 0, i
, got_packet
= 0;
1292 AVDictionary
*metadata
= NULL
;
1294 av_init_packet(pkt
);
1296 while (!got_packet
&& !s
->parse_queue
) {
1300 /* read next packet */
1301 ret
= ff_read_packet(s
, &cur_pkt
);
1303 if (ret
== AVERROR(EAGAIN
))
1305 /* flush the parsers */
1306 for (i
= 0; i
< s
->nb_streams
; i
++) {
1308 if (st
->parser
&& st
->need_parsing
)
1309 parse_packet(s
, NULL
, st
->index
);
1311 /* all remaining packets are now in parse_queue =>
1312 * really terminate parsing */
1316 st
= s
->streams
[cur_pkt
.stream_index
];
1318 if (cur_pkt
.pts
!= AV_NOPTS_VALUE
&&
1319 cur_pkt
.dts
!= AV_NOPTS_VALUE
&&
1320 cur_pkt
.pts
< cur_pkt
.dts
) {
1321 av_log(s
, AV_LOG_WARNING
,
1322 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1323 cur_pkt
.stream_index
,
1324 av_ts2str(cur_pkt
.pts
),
1325 av_ts2str(cur_pkt
.dts
),
1328 if (s
->debug
& FF_FDEBUG_TS
)
1329 av_log(s
, AV_LOG_DEBUG
,
1330 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1331 cur_pkt
.stream_index
,
1332 av_ts2str(cur_pkt
.pts
),
1333 av_ts2str(cur_pkt
.dts
),
1334 cur_pkt
.size
, cur_pkt
.duration
, cur_pkt
.flags
);
1336 if (st
->need_parsing
&& !st
->parser
&& !(s
->flags
& AVFMT_FLAG_NOPARSE
)) {
1337 st
->parser
= av_parser_init(st
->codec
->codec_id
);
1339 av_log(s
, AV_LOG_VERBOSE
, "parser not found for codec "
1340 "%s, packets or times may be invalid.\n",
1341 avcodec_get_name(st
->codec
->codec_id
));
1342 /* no parser available: just output the raw packets */
1343 st
->need_parsing
= AVSTREAM_PARSE_NONE
;
1344 } else if (st
->need_parsing
== AVSTREAM_PARSE_HEADERS
)
1345 st
->parser
->flags
|= PARSER_FLAG_COMPLETE_FRAMES
;
1346 else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_ONCE
)
1347 st
->parser
->flags
|= PARSER_FLAG_ONCE
;
1348 else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
)
1349 st
->parser
->flags
|= PARSER_FLAG_USE_CODEC_TS
;
1352 if (!st
->need_parsing
|| !st
->parser
) {
1353 /* no parsing needed: we just output the packet as is */
1355 compute_pkt_fields(s
, st
, NULL
, pkt
);
1356 if ((s
->iformat
->flags
& AVFMT_GENERIC_INDEX
) &&
1357 (pkt
->flags
& AV_PKT_FLAG_KEY
) && pkt
->dts
!= AV_NOPTS_VALUE
) {
1358 ff_reduce_index(s
, st
->index
);
1359 av_add_index_entry(st
, pkt
->pos
, pkt
->dts
,
1360 0, 0, AVINDEX_KEYFRAME
);
1363 } else if (st
->discard
< AVDISCARD_ALL
) {
1364 if ((ret
= parse_packet(s
, &cur_pkt
, cur_pkt
.stream_index
)) < 0)
1368 av_free_packet(&cur_pkt
);
1370 if (pkt
->flags
& AV_PKT_FLAG_KEY
)
1371 st
->skip_to_keyframe
= 0;
1372 if (st
->skip_to_keyframe
) {
1373 av_free_packet(&cur_pkt
);
1381 if (!got_packet
&& s
->parse_queue
)
1382 ret
= read_from_packet_buffer(&s
->parse_queue
, &s
->parse_queue_end
, pkt
);
1385 AVStream
*st
= s
->streams
[pkt
->stream_index
];
1386 int discard_padding
= 0;
1387 if (st
->first_discard_sample
&& pkt
->pts
!= AV_NOPTS_VALUE
) {
1388 int64_t pts
= pkt
->pts
- (is_relative(pkt
->pts
) ? RELATIVE_TS_BASE
: 0);
1389 int64_t sample
= ts_to_samples(st
, pts
);
1390 int duration
= ts_to_samples(st
, pkt
->duration
);
1391 int64_t end_sample
= sample
+ duration
;
1392 if (duration
> 0 && end_sample
>= st
->first_discard_sample
&&
1393 sample
< st
->last_discard_sample
)
1394 discard_padding
= FFMIN(end_sample
- st
->first_discard_sample
, duration
);
1396 if (st
->skip_samples
|| discard_padding
) {
1397 uint8_t *p
= av_packet_new_side_data(pkt
, AV_PKT_DATA_SKIP_SAMPLES
, 10);
1399 AV_WL32(p
, st
->skip_samples
);
1400 AV_WL32(p
+ 4, discard_padding
);
1401 av_log(s
, AV_LOG_DEBUG
, "demuxer injecting skip %d\n", st
->skip_samples
);
1403 st
->skip_samples
= 0;
1406 if (st
->inject_global_side_data
) {
1407 for (i
= 0; i
< st
->nb_side_data
; i
++) {
1408 AVPacketSideData
*src_sd
= &st
->side_data
[i
];
1411 if (av_packet_get_side_data(pkt
, src_sd
->type
, NULL
))
1414 dst_data
= av_packet_new_side_data(pkt
, src_sd
->type
, src_sd
->size
);
1416 av_log(s
, AV_LOG_WARNING
, "Could not inject global side data\n");
1420 memcpy(dst_data
, src_sd
->data
, src_sd
->size
);
1422 st
->inject_global_side_data
= 0;
1425 if (!(s
->flags
& AVFMT_FLAG_KEEP_SIDE_DATA
))
1426 av_packet_merge_side_data(pkt
);
1429 av_opt_get_dict_val(s
, "metadata", AV_OPT_SEARCH_CHILDREN
, &metadata
);
1431 s
->event_flags
|= AVFMT_EVENT_FLAG_METADATA_UPDATED
;
1432 av_dict_copy(&s
->metadata
, metadata
, 0);
1433 av_dict_free(&metadata
);
1434 av_opt_set_dict_val(s
, "metadata", NULL
, AV_OPT_SEARCH_CHILDREN
);
1437 if (s
->debug
& FF_FDEBUG_TS
)
1438 av_log(s
, AV_LOG_DEBUG
,
1439 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1440 "size=%d, duration=%d, flags=%d\n",
1442 av_ts2str(pkt
->pts
),
1443 av_ts2str(pkt
->dts
),
1444 pkt
->size
, pkt
->duration
, pkt
->flags
);
1449 int av_read_frame(AVFormatContext
*s
, AVPacket
*pkt
)
1451 const int genpts
= s
->flags
& AVFMT_FLAG_GENPTS
;
1457 ret
= s
->packet_buffer
1458 ? read_from_packet_buffer(&s
->packet_buffer
,
1459 &s
->packet_buffer_end
, pkt
)
1460 : read_frame_internal(s
, pkt
);
1467 AVPacketList
*pktl
= s
->packet_buffer
;
1470 AVPacket
*next_pkt
= &pktl
->pkt
;
1472 if (next_pkt
->dts
!= AV_NOPTS_VALUE
) {
1473 int wrap_bits
= s
->streams
[next_pkt
->stream_index
]->pts_wrap_bits
;
1474 // last dts seen for this stream. if any of packets following
1475 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1476 int64_t last_dts
= next_pkt
->dts
;
1477 while (pktl
&& next_pkt
->pts
== AV_NOPTS_VALUE
) {
1478 if (pktl
->pkt
.stream_index
== next_pkt
->stream_index
&&
1479 (av_compare_mod(next_pkt
->dts
, pktl
->pkt
.dts
, 2LL << (wrap_bits
- 1)) < 0)) {
1480 if (av_compare_mod(pktl
->pkt
.pts
, pktl
->pkt
.dts
, 2LL << (wrap_bits
- 1))) {
1482 next_pkt
->pts
= pktl
->pkt
.dts
;
1484 if (last_dts
!= AV_NOPTS_VALUE
) {
1485 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1486 last_dts
= pktl
->pkt
.dts
;
1491 if (eof
&& next_pkt
->pts
== AV_NOPTS_VALUE
&& last_dts
!= AV_NOPTS_VALUE
) {
1492 // Fixing the last reference frame had none pts issue (For MXF etc).
1493 // We only do this when
1495 // 2. we are not able to resolve a pts value for current packet.
1496 // 3. the packets for this stream at the end of the files had valid dts.
1497 next_pkt
->pts
= last_dts
+ next_pkt
->duration
;
1499 pktl
= s
->packet_buffer
;
1502 /* read packet from packet buffer, if there is data */
1503 st
= s
->streams
[next_pkt
->stream_index
];
1504 if (!(next_pkt
->pts
== AV_NOPTS_VALUE
&& st
->discard
< AVDISCARD_ALL
&&
1505 next_pkt
->dts
!= AV_NOPTS_VALUE
&& !eof
)) {
1506 ret
= read_from_packet_buffer(&s
->packet_buffer
,
1507 &s
->packet_buffer_end
, pkt
);
1512 ret
= read_frame_internal(s
, pkt
);
1514 if (pktl
&& ret
!= AVERROR(EAGAIN
)) {
1521 if (av_dup_packet(add_to_pktbuf(&s
->packet_buffer
, pkt
,
1522 &s
->packet_buffer_end
)) < 0)
1523 return AVERROR(ENOMEM
);
1528 st
= s
->streams
[pkt
->stream_index
];
1529 if ((s
->iformat
->flags
& AVFMT_GENERIC_INDEX
) && pkt
->flags
& AV_PKT_FLAG_KEY
) {
1530 ff_reduce_index(s
, st
->index
);
1531 av_add_index_entry(st
, pkt
->pos
, pkt
->dts
, 0, 0, AVINDEX_KEYFRAME
);
1534 if (is_relative(pkt
->dts
))
1535 pkt
->dts
-= RELATIVE_TS_BASE
;
1536 if (is_relative(pkt
->pts
))
1537 pkt
->pts
-= RELATIVE_TS_BASE
;
1542 /* XXX: suppress the packet queue */
1543 static void flush_packet_queue(AVFormatContext
*s
)
1545 free_packet_buffer(&s
->parse_queue
, &s
->parse_queue_end
);
1546 free_packet_buffer(&s
->packet_buffer
, &s
->packet_buffer_end
);
1547 free_packet_buffer(&s
->raw_packet_buffer
, &s
->raw_packet_buffer_end
);
1549 s
->raw_packet_buffer_remaining_size
= RAW_PACKET_BUFFER_SIZE
;
1552 /*******************************************************/
1555 int av_find_default_stream_index(AVFormatContext
*s
)
1559 int best_stream
= 0;
1560 int best_score
= -1;
1562 if (s
->nb_streams
<= 0)
1564 for (i
= 0; i
< s
->nb_streams
; i
++) {
1567 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
1568 !(st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
)) {
1569 if (!st
->codec
->width
&& !st
->codec
->height
&& !st
->codec_info_nb_frames
)
1574 if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
1575 if (!st
->codec
->sample_rate
&& !st
->codec_info_nb_frames
)
1581 if (score
> best_score
) {
1589 /** Flush the frame reader. */
1590 void ff_read_frame_flush(AVFormatContext
*s
)
1595 flush_packet_queue(s
);
1597 /* Reset read state for each stream. */
1598 for (i
= 0; i
< s
->nb_streams
; i
++) {
1602 av_parser_close(st
->parser
);
1605 st
->last_IP_pts
= AV_NOPTS_VALUE
;
1606 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
1607 if (st
->first_dts
== AV_NOPTS_VALUE
)
1608 st
->cur_dts
= RELATIVE_TS_BASE
;
1610 /* We set the current DTS to an unspecified origin. */
1611 st
->cur_dts
= AV_NOPTS_VALUE
;
1613 st
->probe_packets
= MAX_PROBE_PACKETS
;
1615 for (j
= 0; j
< MAX_REORDER_DELAY
+ 1; j
++)
1616 st
->pts_buffer
[j
] = AV_NOPTS_VALUE
;
1618 if (s
->internal
->inject_global_side_data
)
1619 st
->inject_global_side_data
= 1;
1623 void ff_update_cur_dts(AVFormatContext
*s
, AVStream
*ref_st
, int64_t timestamp
)
1627 for (i
= 0; i
< s
->nb_streams
; i
++) {
1628 AVStream
*st
= s
->streams
[i
];
1631 av_rescale(timestamp
,
1632 st
->time_base
.den
* (int64_t) ref_st
->time_base
.num
,
1633 st
->time_base
.num
* (int64_t) ref_st
->time_base
.den
);
1637 void ff_reduce_index(AVFormatContext
*s
, int stream_index
)
1639 AVStream
*st
= s
->streams
[stream_index
];
1640 unsigned int max_entries
= s
->max_index_size
/ sizeof(AVIndexEntry
);
1642 if ((unsigned) st
->nb_index_entries
>= max_entries
) {
1644 for (i
= 0; 2 * i
< st
->nb_index_entries
; i
++)
1645 st
->index_entries
[i
] = st
->index_entries
[2 * i
];
1646 st
->nb_index_entries
= i
;
1650 int ff_add_index_entry(AVIndexEntry
**index_entries
,
1651 int *nb_index_entries
,
1652 unsigned int *index_entries_allocated_size
,
1653 int64_t pos
, int64_t timestamp
,
1654 int size
, int distance
, int flags
)
1656 AVIndexEntry
*entries
, *ie
;
1659 if ((unsigned) *nb_index_entries
+ 1 >= UINT_MAX
/ sizeof(AVIndexEntry
))
1662 if (timestamp
== AV_NOPTS_VALUE
)
1663 return AVERROR(EINVAL
);
1665 if (size
< 0 || size
> 0x3FFFFFFF)
1666 return AVERROR(EINVAL
);
1668 if (is_relative(timestamp
)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1669 timestamp
-= RELATIVE_TS_BASE
;
1671 entries
= av_fast_realloc(*index_entries
,
1672 index_entries_allocated_size
,
1673 (*nb_index_entries
+ 1) *
1674 sizeof(AVIndexEntry
));
1678 *index_entries
= entries
;
1680 index
= ff_index_search_timestamp(*index_entries
, *nb_index_entries
,
1681 timestamp
, AVSEEK_FLAG_ANY
);
1684 index
= (*nb_index_entries
)++;
1685 ie
= &entries
[index
];
1686 av_assert0(index
== 0 || ie
[-1].timestamp
< timestamp
);
1688 ie
= &entries
[index
];
1689 if (ie
->timestamp
!= timestamp
) {
1690 if (ie
->timestamp
<= timestamp
)
1692 memmove(entries
+ index
+ 1, entries
+ index
,
1693 sizeof(AVIndexEntry
) * (*nb_index_entries
- index
));
1694 (*nb_index_entries
)++;
1695 } else if (ie
->pos
== pos
&& distance
< ie
->min_distance
)
1696 // do not reduce the distance
1697 distance
= ie
->min_distance
;
1701 ie
->timestamp
= timestamp
;
1702 ie
->min_distance
= distance
;
1709 int av_add_index_entry(AVStream
*st
, int64_t pos
, int64_t timestamp
,
1710 int size
, int distance
, int flags
)
1712 timestamp
= wrap_timestamp(st
, timestamp
);
1713 return ff_add_index_entry(&st
->index_entries
, &st
->nb_index_entries
,
1714 &st
->index_entries_allocated_size
, pos
,
1715 timestamp
, size
, distance
, flags
);
1718 int ff_index_search_timestamp(const AVIndexEntry
*entries
, int nb_entries
,
1719 int64_t wanted_timestamp
, int flags
)
1727 // Optimize appending index entries at the end.
1728 if (b
&& entries
[b
- 1].timestamp
< wanted_timestamp
)
1733 timestamp
= entries
[m
].timestamp
;
1734 if (timestamp
>= wanted_timestamp
)
1736 if (timestamp
<= wanted_timestamp
)
1739 m
= (flags
& AVSEEK_FLAG_BACKWARD
) ? a
: b
;
1741 if (!(flags
& AVSEEK_FLAG_ANY
))
1742 while (m
>= 0 && m
< nb_entries
&&
1743 !(entries
[m
].flags
& AVINDEX_KEYFRAME
))
1744 m
+= (flags
& AVSEEK_FLAG_BACKWARD
) ? -1 : 1;
1746 if (m
== nb_entries
)
1751 int av_index_search_timestamp(AVStream
*st
, int64_t wanted_timestamp
, int flags
)
1753 return ff_index_search_timestamp(st
->index_entries
, st
->nb_index_entries
,
1754 wanted_timestamp
, flags
);
1757 static int64_t ff_read_timestamp(AVFormatContext
*s
, int stream_index
, int64_t *ppos
, int64_t pos_limit
,
1758 int64_t (*read_timestamp
)(struct AVFormatContext
*, int , int64_t *, int64_t ))
1760 int64_t ts
= read_timestamp(s
, stream_index
, ppos
, pos_limit
);
1761 if (stream_index
>= 0)
1762 ts
= wrap_timestamp(s
->streams
[stream_index
], ts
);
1766 int ff_seek_frame_binary(AVFormatContext
*s
, int stream_index
,
1767 int64_t target_ts
, int flags
)
1769 AVInputFormat
*avif
= s
->iformat
;
1770 int64_t av_uninit(pos_min
), av_uninit(pos_max
), pos
, pos_limit
;
1771 int64_t ts_min
, ts_max
, ts
;
1776 if (stream_index
< 0)
1779 av_dlog(s
, "read_seek: %d %s\n", stream_index
, av_ts2str(target_ts
));
1782 ts_min
= AV_NOPTS_VALUE
;
1783 pos_limit
= -1; // GCC falsely says it may be uninitialized.
1785 st
= s
->streams
[stream_index
];
1786 if (st
->index_entries
) {
1789 /* FIXME: Whole function must be checked for non-keyframe entries in
1790 * index case, especially read_timestamp(). */
1791 index
= av_index_search_timestamp(st
, target_ts
,
1792 flags
| AVSEEK_FLAG_BACKWARD
);
1793 index
= FFMAX(index
, 0);
1794 e
= &st
->index_entries
[index
];
1796 if (e
->timestamp
<= target_ts
|| e
->pos
== e
->min_distance
) {
1798 ts_min
= e
->timestamp
;
1799 av_dlog(s
, "using cached pos_min=0x%"PRIx64
" dts_min=%s\n",
1800 pos_min
, av_ts2str(ts_min
));
1802 av_assert1(index
== 0);
1805 index
= av_index_search_timestamp(st
, target_ts
,
1806 flags
& ~AVSEEK_FLAG_BACKWARD
);
1807 av_assert0(index
< st
->nb_index_entries
);
1809 e
= &st
->index_entries
[index
];
1810 av_assert1(e
->timestamp
>= target_ts
);
1812 ts_max
= e
->timestamp
;
1813 pos_limit
= pos_max
- e
->min_distance
;
1814 av_dlog(s
, "using cached pos_max=0x%"PRIx64
" pos_limit=0x%"PRIx64
1815 " dts_max=%s\n", pos_max
, pos_limit
, av_ts2str(ts_max
));
1819 pos
= ff_gen_search(s
, stream_index
, target_ts
, pos_min
, pos_max
, pos_limit
,
1820 ts_min
, ts_max
, flags
, &ts
, avif
->read_timestamp
);
1825 if ((ret
= avio_seek(s
->pb
, pos
, SEEK_SET
)) < 0)
1828 ff_read_frame_flush(s
);
1829 ff_update_cur_dts(s
, st
, ts
);
1834 int ff_find_last_ts(AVFormatContext
*s
, int stream_index
, int64_t *ts
, int64_t *pos
,
1835 int64_t (*read_timestamp
)(struct AVFormatContext
*, int , int64_t *, int64_t ))
1837 int64_t step
= 1024;
1838 int64_t limit
, ts_max
;
1839 int64_t filesize
= avio_size(s
->pb
);
1840 int64_t pos_max
= filesize
- 1;
1843 pos_max
= FFMAX(0, (pos_max
) - step
);
1844 ts_max
= ff_read_timestamp(s
, stream_index
,
1845 &pos_max
, limit
, read_timestamp
);
1847 } while (ts_max
== AV_NOPTS_VALUE
&& 2*limit
> step
);
1848 if (ts_max
== AV_NOPTS_VALUE
)
1852 int64_t tmp_pos
= pos_max
+ 1;
1853 int64_t tmp_ts
= ff_read_timestamp(s
, stream_index
,
1854 &tmp_pos
, INT64_MAX
, read_timestamp
);
1855 if (tmp_ts
== AV_NOPTS_VALUE
)
1857 av_assert0(tmp_pos
> pos_max
);
1860 if (tmp_pos
>= filesize
)
1872 int64_t ff_gen_search(AVFormatContext
*s
, int stream_index
, int64_t target_ts
,
1873 int64_t pos_min
, int64_t pos_max
, int64_t pos_limit
,
1874 int64_t ts_min
, int64_t ts_max
,
1875 int flags
, int64_t *ts_ret
,
1876 int64_t (*read_timestamp
)(struct AVFormatContext
*, int,
1877 int64_t *, int64_t))
1884 av_dlog(s
, "gen_seek: %d %s\n", stream_index
, av_ts2str(target_ts
));
1886 if (ts_min
== AV_NOPTS_VALUE
) {
1887 pos_min
= s
->data_offset
;
1888 ts_min
= ff_read_timestamp(s
, stream_index
, &pos_min
, INT64_MAX
, read_timestamp
);
1889 if (ts_min
== AV_NOPTS_VALUE
)
1893 if (ts_min
>= target_ts
) {
1898 if (ts_max
== AV_NOPTS_VALUE
) {
1899 if ((ret
= ff_find_last_ts(s
, stream_index
, &ts_max
, &pos_max
, read_timestamp
)) < 0)
1901 pos_limit
= pos_max
;
1904 if (ts_max
<= target_ts
) {
1909 if (ts_min
> ts_max
)
1911 else if (ts_min
== ts_max
)
1912 pos_limit
= pos_min
;
1915 while (pos_min
< pos_limit
) {
1917 "pos_min=0x%"PRIx64
" pos_max=0x%"PRIx64
" dts_min=%s dts_max=%s\n",
1918 pos_min
, pos_max
, av_ts2str(ts_min
), av_ts2str(ts_max
));
1919 assert(pos_limit
<= pos_max
);
1921 if (no_change
== 0) {
1922 int64_t approximate_keyframe_distance
= pos_max
- pos_limit
;
1923 // interpolate position (better than dichotomy)
1924 pos
= av_rescale(target_ts
- ts_min
, pos_max
- pos_min
,
1926 pos_min
- approximate_keyframe_distance
;
1927 } else if (no_change
== 1) {
1928 // bisection if interpolation did not change min / max pos last time
1929 pos
= (pos_min
+ pos_limit
) >> 1;
1931 /* linear search if bisection failed, can only happen if there
1932 * are very few or no keyframes between min/max */
1937 else if (pos
> pos_limit
)
1941 // May pass pos_limit instead of -1.
1942 ts
= ff_read_timestamp(s
, stream_index
, &pos
, INT64_MAX
, read_timestamp
);
1947 av_dlog(s
, "%"PRId64
" %"PRId64
" %"PRId64
" / %s %s %s"
1948 " target:%s limit:%"PRId64
" start:%"PRId64
" noc:%d\n",
1949 pos_min
, pos
, pos_max
,
1950 av_ts2str(ts_min
), av_ts2str(ts
), av_ts2str(ts_max
), av_ts2str(target_ts
),
1951 pos_limit
, start_pos
, no_change
);
1952 if (ts
== AV_NOPTS_VALUE
) {
1953 av_log(s
, AV_LOG_ERROR
, "read_timestamp() failed in the middle\n");
1956 if (target_ts
<= ts
) {
1957 pos_limit
= start_pos
- 1;
1961 if (target_ts
>= ts
) {
1967 pos
= (flags
& AVSEEK_FLAG_BACKWARD
) ? pos_min
: pos_max
;
1968 ts
= (flags
& AVSEEK_FLAG_BACKWARD
) ? ts_min
: ts_max
;
1971 ts_min
= ff_read_timestamp(s
, stream_index
, &pos_min
, INT64_MAX
, read_timestamp
);
1973 ts_max
= ff_read_timestamp(s
, stream_index
, &pos_min
, INT64_MAX
, read_timestamp
);
1974 av_dlog(s
, "pos=0x%"PRIx64
" %s<=%s<=%s\n",
1975 pos
, av_ts2str(ts_min
), av_ts2str(target_ts
), av_ts2str(ts_max
));
1981 static int seek_frame_byte(AVFormatContext
*s
, int stream_index
,
1982 int64_t pos
, int flags
)
1984 int64_t pos_min
, pos_max
;
1986 pos_min
= s
->data_offset
;
1987 pos_max
= avio_size(s
->pb
) - 1;
1991 else if (pos
> pos_max
)
1994 avio_seek(s
->pb
, pos
, SEEK_SET
);
1996 s
->io_repositioned
= 1;
2001 static int seek_frame_generic(AVFormatContext
*s
, int stream_index
,
2002 int64_t timestamp
, int flags
)
2009 st
= s
->streams
[stream_index
];
2011 index
= av_index_search_timestamp(st
, timestamp
, flags
);
2013 if (index
< 0 && st
->nb_index_entries
&&
2014 timestamp
< st
->index_entries
[0].timestamp
)
2017 if (index
< 0 || index
== st
->nb_index_entries
- 1) {
2021 if (st
->nb_index_entries
) {
2022 av_assert0(st
->index_entries
);
2023 ie
= &st
->index_entries
[st
->nb_index_entries
- 1];
2024 if ((ret
= avio_seek(s
->pb
, ie
->pos
, SEEK_SET
)) < 0)
2026 ff_update_cur_dts(s
, st
, ie
->timestamp
);
2028 if ((ret
= avio_seek(s
->pb
, s
->data_offset
, SEEK_SET
)) < 0)
2034 read_status
= av_read_frame(s
, &pkt
);
2035 } while (read_status
== AVERROR(EAGAIN
));
2036 if (read_status
< 0)
2038 av_free_packet(&pkt
);
2039 if (stream_index
== pkt
.stream_index
&& pkt
.dts
> timestamp
) {
2040 if (pkt
.flags
& AV_PKT_FLAG_KEY
)
2042 if (nonkey
++ > 1000 && st
->codec
->codec_id
!= AV_CODEC_ID_CDGRAPHICS
) {
2043 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
);
2048 index
= av_index_search_timestamp(st
, timestamp
, flags
);
2053 ff_read_frame_flush(s
);
2054 if (s
->iformat
->read_seek
)
2055 if (s
->iformat
->read_seek(s
, stream_index
, timestamp
, flags
) >= 0)
2057 ie
= &st
->index_entries
[index
];
2058 if ((ret
= avio_seek(s
->pb
, ie
->pos
, SEEK_SET
)) < 0)
2060 ff_update_cur_dts(s
, st
, ie
->timestamp
);
2065 static int seek_frame_internal(AVFormatContext
*s
, int stream_index
,
2066 int64_t timestamp
, int flags
)
2071 if (flags
& AVSEEK_FLAG_BYTE
) {
2072 if (s
->iformat
->flags
& AVFMT_NO_BYTE_SEEK
)
2074 ff_read_frame_flush(s
);
2075 return seek_frame_byte(s
, stream_index
, timestamp
, flags
);
2078 if (stream_index
< 0) {
2079 stream_index
= av_find_default_stream_index(s
);
2080 if (stream_index
< 0)
2083 st
= s
->streams
[stream_index
];
2084 /* timestamp for default must be expressed in AV_TIME_BASE units */
2085 timestamp
= av_rescale(timestamp
, st
->time_base
.den
,
2086 AV_TIME_BASE
* (int64_t) st
->time_base
.num
);
2089 /* first, we try the format specific seek */
2090 if (s
->iformat
->read_seek
) {
2091 ff_read_frame_flush(s
);
2092 ret
= s
->iformat
->read_seek(s
, stream_index
, timestamp
, flags
);
2098 if (s
->iformat
->read_timestamp
&&
2099 !(s
->iformat
->flags
& AVFMT_NOBINSEARCH
)) {
2100 ff_read_frame_flush(s
);
2101 return ff_seek_frame_binary(s
, stream_index
, timestamp
, flags
);
2102 } else if (!(s
->iformat
->flags
& AVFMT_NOGENSEARCH
)) {
2103 ff_read_frame_flush(s
);
2104 return seek_frame_generic(s
, stream_index
, timestamp
, flags
);
2109 int av_seek_frame(AVFormatContext
*s
, int stream_index
,
2110 int64_t timestamp
, int flags
)
2114 if (s
->iformat
->read_seek2
&& !s
->iformat
->read_seek
) {
2115 int64_t min_ts
= INT64_MIN
, max_ts
= INT64_MAX
;
2116 if ((flags
& AVSEEK_FLAG_BACKWARD
))
2120 return avformat_seek_file(s
, stream_index
, min_ts
, timestamp
, max_ts
,
2121 flags
& ~AVSEEK_FLAG_BACKWARD
);
2124 ret
= seek_frame_internal(s
, stream_index
, timestamp
, flags
);
2127 ret
= avformat_queue_attached_pictures(s
);
2132 int avformat_seek_file(AVFormatContext
*s
, int stream_index
, int64_t min_ts
,
2133 int64_t ts
, int64_t max_ts
, int flags
)
2135 if (min_ts
> ts
|| max_ts
< ts
)
2137 if (stream_index
< -1 || stream_index
>= (int)s
->nb_streams
)
2138 return AVERROR(EINVAL
);
2141 flags
|= AVSEEK_FLAG_ANY
;
2142 flags
&= ~AVSEEK_FLAG_BACKWARD
;
2144 if (s
->iformat
->read_seek2
) {
2146 ff_read_frame_flush(s
);
2148 if (stream_index
== -1 && s
->nb_streams
== 1) {
2149 AVRational time_base
= s
->streams
[0]->time_base
;
2150 ts
= av_rescale_q(ts
, AV_TIME_BASE_Q
, time_base
);
2151 min_ts
= av_rescale_rnd(min_ts
, time_base
.den
,
2152 time_base
.num
* (int64_t)AV_TIME_BASE
,
2153 AV_ROUND_UP
| AV_ROUND_PASS_MINMAX
);
2154 max_ts
= av_rescale_rnd(max_ts
, time_base
.den
,
2155 time_base
.num
* (int64_t)AV_TIME_BASE
,
2156 AV_ROUND_DOWN
| AV_ROUND_PASS_MINMAX
);
2159 ret
= s
->iformat
->read_seek2(s
, stream_index
, min_ts
,
2163 ret
= avformat_queue_attached_pictures(s
);
2167 if (s
->iformat
->read_timestamp
) {
2168 // try to seek via read_timestamp()
2171 // Fall back on old API if new is not implemented but old is.
2172 // Note the old API has somewhat different semantics.
2173 if (s
->iformat
->read_seek
|| 1) {
2174 int dir
= (ts
- (uint64_t)min_ts
> (uint64_t)max_ts
- ts
? AVSEEK_FLAG_BACKWARD
: 0);
2175 int ret
= av_seek_frame(s
, stream_index
, ts
, flags
| dir
);
2176 if (ret
<0 && ts
!= min_ts
&& max_ts
!= ts
) {
2177 ret
= av_seek_frame(s
, stream_index
, dir
? max_ts
: min_ts
, flags
| dir
);
2179 ret
= av_seek_frame(s
, stream_index
, ts
, flags
| (dir
^AVSEEK_FLAG_BACKWARD
));
2184 // try some generic seek like seek_frame_generic() but with new ts semantics
2185 return -1; //unreachable
2188 /*******************************************************/
2191 * Return TRUE if the stream has accurate duration in any stream.
2193 * @return TRUE if the stream has accurate duration for at least one component.
2195 static int has_duration(AVFormatContext
*ic
)
2200 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2201 st
= ic
->streams
[i
];
2202 if (st
->duration
!= AV_NOPTS_VALUE
)
2205 if (ic
->duration
!= AV_NOPTS_VALUE
)
2211 * Estimate the stream timings from the one of each components.
2213 * Also computes the global bitrate if possible.
2215 static void update_stream_timings(AVFormatContext
*ic
)
2217 int64_t start_time
, start_time1
, start_time_text
, end_time
, end_time1
;
2218 int64_t duration
, duration1
, filesize
;
2223 start_time
= INT64_MAX
;
2224 start_time_text
= INT64_MAX
;
2225 end_time
= INT64_MIN
;
2226 duration
= INT64_MIN
;
2227 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2228 st
= ic
->streams
[i
];
2229 if (st
->start_time
!= AV_NOPTS_VALUE
&& st
->time_base
.den
) {
2230 start_time1
= av_rescale_q(st
->start_time
, st
->time_base
,
2232 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
|| st
->codec
->codec_type
== AVMEDIA_TYPE_DATA
) {
2233 if (start_time1
< start_time_text
)
2234 start_time_text
= start_time1
;
2236 start_time
= FFMIN(start_time
, start_time1
);
2237 end_time1
= AV_NOPTS_VALUE
;
2238 if (st
->duration
!= AV_NOPTS_VALUE
) {
2239 end_time1
= start_time1
+
2240 av_rescale_q(st
->duration
, st
->time_base
,
2242 end_time
= FFMAX(end_time
, end_time1
);
2244 for (p
= NULL
; (p
= av_find_program_from_stream(ic
, p
, i
)); ) {
2245 if (p
->start_time
== AV_NOPTS_VALUE
|| p
->start_time
> start_time1
)
2246 p
->start_time
= start_time1
;
2247 if (p
->end_time
< end_time1
)
2248 p
->end_time
= end_time1
;
2251 if (st
->duration
!= AV_NOPTS_VALUE
) {
2252 duration1
= av_rescale_q(st
->duration
, st
->time_base
,
2254 duration
= FFMAX(duration
, duration1
);
2257 if (start_time
== INT64_MAX
|| (start_time
> start_time_text
&& start_time
- start_time_text
< AV_TIME_BASE
))
2258 start_time
= start_time_text
;
2259 else if (start_time
> start_time_text
)
2260 av_log(ic
, AV_LOG_VERBOSE
, "Ignoring outlier non primary stream starttime %f\n", start_time_text
/ (float)AV_TIME_BASE
);
2262 if (start_time
!= INT64_MAX
) {
2263 ic
->start_time
= start_time
;
2264 if (end_time
!= INT64_MIN
) {
2265 if (ic
->nb_programs
) {
2266 for (i
= 0; i
< ic
->nb_programs
; i
++) {
2267 p
= ic
->programs
[i
];
2268 if (p
->start_time
!= AV_NOPTS_VALUE
&& p
->end_time
> p
->start_time
)
2269 duration
= FFMAX(duration
, p
->end_time
- p
->start_time
);
2272 duration
= FFMAX(duration
, end_time
- start_time
);
2275 if (duration
!= INT64_MIN
&& duration
> 0 && ic
->duration
== AV_NOPTS_VALUE
) {
2276 ic
->duration
= duration
;
2278 if (ic
->pb
&& (filesize
= avio_size(ic
->pb
)) > 0 && ic
->duration
!= AV_NOPTS_VALUE
) {
2279 /* compute the bitrate */
2280 double bitrate
= (double) filesize
* 8.0 * AV_TIME_BASE
/
2281 (double) ic
->duration
;
2282 if (bitrate
>= 0 && bitrate
<= INT_MAX
)
2283 ic
->bit_rate
= bitrate
;
2287 static void fill_all_stream_timings(AVFormatContext
*ic
)
2292 update_stream_timings(ic
);
2293 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2294 st
= ic
->streams
[i
];
2295 if (st
->start_time
== AV_NOPTS_VALUE
) {
2296 if (ic
->start_time
!= AV_NOPTS_VALUE
)
2297 st
->start_time
= av_rescale_q(ic
->start_time
, AV_TIME_BASE_Q
,
2299 if (ic
->duration
!= AV_NOPTS_VALUE
)
2300 st
->duration
= av_rescale_q(ic
->duration
, AV_TIME_BASE_Q
,
2306 static void estimate_timings_from_bit_rate(AVFormatContext
*ic
)
2308 int64_t filesize
, duration
;
2309 int i
, show_warning
= 0;
2312 /* if bit_rate is already set, we believe it */
2313 if (ic
->bit_rate
<= 0) {
2315 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2316 st
= ic
->streams
[i
];
2317 if (st
->codec
->bit_rate
> 0) {
2318 if (INT_MAX
- st
->codec
->bit_rate
< bit_rate
) {
2322 bit_rate
+= st
->codec
->bit_rate
;
2325 ic
->bit_rate
= bit_rate
;
2328 /* if duration is already set, we believe it */
2329 if (ic
->duration
== AV_NOPTS_VALUE
&&
2330 ic
->bit_rate
!= 0) {
2331 filesize
= ic
->pb
? avio_size(ic
->pb
) : 0;
2332 if (filesize
> ic
->data_offset
) {
2333 filesize
-= ic
->data_offset
;
2334 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2335 st
= ic
->streams
[i
];
2336 if ( st
->time_base
.num
<= INT64_MAX
/ ic
->bit_rate
2337 && st
->duration
== AV_NOPTS_VALUE
) {
2338 duration
= av_rescale(8 * filesize
, st
->time_base
.den
,
2340 (int64_t) st
->time_base
.num
);
2341 st
->duration
= duration
;
2348 av_log(ic
, AV_LOG_WARNING
,
2349 "Estimating duration from bitrate, this may be inaccurate\n");
2352 #define DURATION_MAX_READ_SIZE 250000LL
2353 #define DURATION_MAX_RETRY 4
2355 /* only usable for MPEG-PS streams */
2356 static void estimate_timings_from_pts(AVFormatContext
*ic
, int64_t old_offset
)
2358 AVPacket pkt1
, *pkt
= &pkt1
;
2360 int num
, den
, read_size
, i
, ret
;
2361 int found_duration
= 0;
2363 int64_t filesize
, offset
, duration
;
2366 /* flush packet queue */
2367 flush_packet_queue(ic
);
2369 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2370 st
= ic
->streams
[i
];
2371 if (st
->start_time
== AV_NOPTS_VALUE
&&
2372 st
->first_dts
== AV_NOPTS_VALUE
&&
2373 st
->codec
->codec_type
!= AVMEDIA_TYPE_UNKNOWN
)
2374 av_log(st
->codec
, AV_LOG_WARNING
,
2375 "start time for stream %d is not set in estimate_timings_from_pts\n", i
);
2378 av_parser_close(st
->parser
);
2383 av_opt_set(ic
, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN
);
2384 /* estimate the end time (duration) */
2385 /* XXX: may need to support wrapping */
2386 filesize
= ic
->pb
? avio_size(ic
->pb
) : 0;
2388 is_end
= found_duration
;
2389 offset
= filesize
- (DURATION_MAX_READ_SIZE
<< retry
);
2393 avio_seek(ic
->pb
, offset
, SEEK_SET
);
2396 if (read_size
>= DURATION_MAX_READ_SIZE
<< (FFMAX(retry
- 1, 0)))
2400 ret
= ff_read_packet(ic
, pkt
);
2401 } while (ret
== AVERROR(EAGAIN
));
2404 read_size
+= pkt
->size
;
2405 st
= ic
->streams
[pkt
->stream_index
];
2406 if (pkt
->pts
!= AV_NOPTS_VALUE
&&
2407 (st
->start_time
!= AV_NOPTS_VALUE
||
2408 st
->first_dts
!= AV_NOPTS_VALUE
)) {
2409 if (pkt
->duration
== 0) {
2410 ff_compute_frame_duration(ic
, &num
, &den
, st
, st
->parser
, pkt
);
2412 pkt
->duration
= av_rescale_rnd(1,
2413 num
* (int64_t) st
->time_base
.den
,
2414 den
* (int64_t) st
->time_base
.num
,
2418 duration
= pkt
->pts
+ pkt
->duration
;
2420 if (st
->start_time
!= AV_NOPTS_VALUE
)
2421 duration
-= st
->start_time
;
2423 duration
-= st
->first_dts
;
2425 if (st
->duration
== AV_NOPTS_VALUE
|| st
->info
->last_duration
<= 0 ||
2426 (st
->duration
< duration
&& FFABS(duration
- st
->info
->last_duration
) < 60LL*st
->time_base
.den
/ st
->time_base
.num
))
2427 st
->duration
= duration
;
2428 st
->info
->last_duration
= duration
;
2431 av_free_packet(pkt
);
2434 /* check if all audio/video streams have valid duration */
2437 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2438 st
= ic
->streams
[i
];
2439 switch (st
->codec
->codec_type
) {
2440 case AVMEDIA_TYPE_VIDEO
:
2441 case AVMEDIA_TYPE_AUDIO
:
2442 if (st
->duration
== AV_NOPTS_VALUE
)
2449 ++retry
<= DURATION_MAX_RETRY
);
2451 av_opt_set(ic
, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN
);
2453 /* warn about audio/video streams which duration could not be estimated */
2454 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2455 st
= ic
->streams
[i
];
2456 if (st
->duration
== AV_NOPTS_VALUE
) {
2457 switch (st
->codec
->codec_type
) {
2458 case AVMEDIA_TYPE_VIDEO
:
2459 case AVMEDIA_TYPE_AUDIO
:
2460 if (st
->start_time
!= AV_NOPTS_VALUE
|| st
->first_dts
!= AV_NOPTS_VALUE
) {
2461 av_log(ic
, AV_LOG_DEBUG
, "stream %d : no PTS found at end of file, duration not set\n", i
);
2463 av_log(ic
, AV_LOG_DEBUG
, "stream %d : no TS found at start of file, duration not set\n", i
);
2467 fill_all_stream_timings(ic
);
2469 avio_seek(ic
->pb
, old_offset
, SEEK_SET
);
2470 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2473 st
= ic
->streams
[i
];
2474 st
->cur_dts
= st
->first_dts
;
2475 st
->last_IP_pts
= AV_NOPTS_VALUE
;
2476 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
2477 for (j
= 0; j
< MAX_REORDER_DELAY
+ 1; j
++)
2478 st
->pts_buffer
[j
] = AV_NOPTS_VALUE
;
2482 static void estimate_timings(AVFormatContext
*ic
, int64_t old_offset
)
2486 /* get the file size, if possible */
2487 if (ic
->iformat
->flags
& AVFMT_NOFILE
) {
2490 file_size
= avio_size(ic
->pb
);
2491 file_size
= FFMAX(0, file_size
);
2494 if ((!strcmp(ic
->iformat
->name
, "mpeg") ||
2495 !strcmp(ic
->iformat
->name
, "mpegts")) &&
2496 file_size
&& ic
->pb
->seekable
) {
2497 /* get accurate estimate from the PTSes */
2498 estimate_timings_from_pts(ic
, old_offset
);
2499 ic
->duration_estimation_method
= AVFMT_DURATION_FROM_PTS
;
2500 } else if (has_duration(ic
)) {
2501 /* at least one component has timings - we use them for all
2503 fill_all_stream_timings(ic
);
2504 ic
->duration_estimation_method
= AVFMT_DURATION_FROM_STREAM
;
2506 /* less precise: use bitrate info */
2507 estimate_timings_from_bit_rate(ic
);
2508 ic
->duration_estimation_method
= AVFMT_DURATION_FROM_BITRATE
;
2510 update_stream_timings(ic
);
2514 AVStream av_unused
*st
;
2515 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2516 st
= ic
->streams
[i
];
2517 av_dlog(ic
, "%d: start_time: %0.3f duration: %0.3f\n", i
,
2518 (double) st
->start_time
/ AV_TIME_BASE
,
2519 (double) st
->duration
/ AV_TIME_BASE
);
2522 "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2523 (double) ic
->start_time
/ AV_TIME_BASE
,
2524 (double) ic
->duration
/ AV_TIME_BASE
,
2525 ic
->bit_rate
/ 1000);
2529 static int has_codec_parameters(AVStream
*st
, const char **errmsg_ptr
)
2531 AVCodecContext
*avctx
= st
->codec
;
2533 #define FAIL(errmsg) do { \
2535 *errmsg_ptr = errmsg; \
2539 if ( avctx
->codec_id
== AV_CODEC_ID_NONE
2540 && avctx
->codec_type
!= AVMEDIA_TYPE_DATA
)
2541 FAIL("unknown codec");
2542 switch (avctx
->codec_type
) {
2543 case AVMEDIA_TYPE_AUDIO
:
2544 if (!avctx
->frame_size
&& determinable_frame_size(avctx
))
2545 FAIL("unspecified frame size");
2546 if (st
->info
->found_decoder
>= 0 &&
2547 avctx
->sample_fmt
== AV_SAMPLE_FMT_NONE
)
2548 FAIL("unspecified sample format");
2549 if (!avctx
->sample_rate
)
2550 FAIL("unspecified sample rate");
2551 if (!avctx
->channels
)
2552 FAIL("unspecified number of channels");
2553 if (st
->info
->found_decoder
>= 0 && !st
->nb_decoded_frames
&& avctx
->codec_id
== AV_CODEC_ID_DTS
)
2554 FAIL("no decodable DTS frames");
2556 case AVMEDIA_TYPE_VIDEO
:
2558 FAIL("unspecified size");
2559 if (st
->info
->found_decoder
>= 0 && avctx
->pix_fmt
== AV_PIX_FMT_NONE
)
2560 FAIL("unspecified pixel format");
2561 if (st
->codec
->codec_id
== AV_CODEC_ID_RV30
|| st
->codec
->codec_id
== AV_CODEC_ID_RV40
)
2562 if (!st
->sample_aspect_ratio
.num
&& !st
->codec
->sample_aspect_ratio
.num
&& !st
->codec_info_nb_frames
)
2563 FAIL("no frame in rv30/40 and no sar");
2565 case AVMEDIA_TYPE_SUBTITLE
:
2566 if (avctx
->codec_id
== AV_CODEC_ID_HDMV_PGS_SUBTITLE
&& !avctx
->width
)
2567 FAIL("unspecified size");
2569 case AVMEDIA_TYPE_DATA
:
2570 if (avctx
->codec_id
== AV_CODEC_ID_NONE
) return 1;
2576 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2577 static int try_decode_frame(AVFormatContext
*s
, AVStream
*st
, AVPacket
*avpkt
,
2578 AVDictionary
**options
)
2580 const AVCodec
*codec
;
2581 int got_picture
= 1, ret
= 0;
2582 AVFrame
*frame
= av_frame_alloc();
2583 AVSubtitle subtitle
;
2584 AVPacket pkt
= *avpkt
;
2587 return AVERROR(ENOMEM
);
2589 if (!avcodec_is_open(st
->codec
) &&
2590 st
->info
->found_decoder
<= 0 &&
2591 (st
->codec
->codec_id
!= -st
->info
->found_decoder
|| !st
->codec
->codec_id
)) {
2592 AVDictionary
*thread_opt
= NULL
;
2594 codec
= find_decoder(s
, st
, st
->codec
->codec_id
);
2597 st
->info
->found_decoder
= -st
->codec
->codec_id
;
2602 /* Force thread count to 1 since the H.264 decoder will not extract
2603 * SPS and PPS to extradata during multi-threaded decoding. */
2604 av_dict_set(options
? options
: &thread_opt
, "threads", "1", 0);
2605 if (s
->codec_whitelist
)
2606 av_dict_set(options
? options
: &thread_opt
, "codec_whitelist", s
->codec_whitelist
, 0);
2607 ret
= avcodec_open2(st
->codec
, codec
, options
? options
: &thread_opt
);
2609 av_dict_free(&thread_opt
);
2611 st
->info
->found_decoder
= -st
->codec
->codec_id
;
2614 st
->info
->found_decoder
= 1;
2615 } else if (!st
->info
->found_decoder
)
2616 st
->info
->found_decoder
= 1;
2618 if (st
->info
->found_decoder
< 0) {
2623 while ((pkt
.size
> 0 || (!pkt
.data
&& got_picture
)) &&
2625 (!has_codec_parameters(st
, NULL
) || !has_decode_delay_been_guessed(st
) ||
2626 (!st
->codec_info_nb_frames
&&
2627 st
->codec
->codec
->capabilities
& CODEC_CAP_CHANNEL_CONF
))) {
2629 switch (st
->codec
->codec_type
) {
2630 case AVMEDIA_TYPE_VIDEO
:
2631 ret
= avcodec_decode_video2(st
->codec
, frame
,
2632 &got_picture
, &pkt
);
2634 case AVMEDIA_TYPE_AUDIO
:
2635 ret
= avcodec_decode_audio4(st
->codec
, frame
, &got_picture
, &pkt
);
2637 case AVMEDIA_TYPE_SUBTITLE
:
2638 ret
= avcodec_decode_subtitle2(st
->codec
, &subtitle
,
2639 &got_picture
, &pkt
);
2647 st
->nb_decoded_frames
++;
2654 if (!pkt
.data
&& !got_picture
)
2658 av_frame_free(&frame
);
2662 unsigned int ff_codec_get_tag(const AVCodecTag
*tags
, enum AVCodecID id
)
2664 while (tags
->id
!= AV_CODEC_ID_NONE
) {
2672 enum AVCodecID
ff_codec_get_id(const AVCodecTag
*tags
, unsigned int tag
)
2675 for (i
= 0; tags
[i
].id
!= AV_CODEC_ID_NONE
; i
++)
2676 if (tag
== tags
[i
].tag
)
2678 for (i
= 0; tags
[i
].id
!= AV_CODEC_ID_NONE
; i
++)
2679 if (avpriv_toupper4(tag
) == avpriv_toupper4(tags
[i
].tag
))
2681 return AV_CODEC_ID_NONE
;
2684 enum AVCodecID
ff_get_pcm_codec_id(int bps
, int flt
, int be
, int sflags
)
2689 return be
? AV_CODEC_ID_PCM_F32BE
: AV_CODEC_ID_PCM_F32LE
;
2691 return be
? AV_CODEC_ID_PCM_F64BE
: AV_CODEC_ID_PCM_F64LE
;
2693 return AV_CODEC_ID_NONE
;
2698 if (sflags
& (1 << (bps
- 1))) {
2701 return AV_CODEC_ID_PCM_S8
;
2703 return be
? AV_CODEC_ID_PCM_S16BE
: AV_CODEC_ID_PCM_S16LE
;
2705 return be
? AV_CODEC_ID_PCM_S24BE
: AV_CODEC_ID_PCM_S24LE
;
2707 return be
? AV_CODEC_ID_PCM_S32BE
: AV_CODEC_ID_PCM_S32LE
;
2709 return AV_CODEC_ID_NONE
;
2714 return AV_CODEC_ID_PCM_U8
;
2716 return be
? AV_CODEC_ID_PCM_U16BE
: AV_CODEC_ID_PCM_U16LE
;
2718 return be
? AV_CODEC_ID_PCM_U24BE
: AV_CODEC_ID_PCM_U24LE
;
2720 return be
? AV_CODEC_ID_PCM_U32BE
: AV_CODEC_ID_PCM_U32LE
;
2722 return AV_CODEC_ID_NONE
;
2728 unsigned int av_codec_get_tag(const AVCodecTag
*const *tags
, enum AVCodecID id
)
2731 if (!av_codec_get_tag2(tags
, id
, &tag
))
2736 int av_codec_get_tag2(const AVCodecTag
* const *tags
, enum AVCodecID id
,
2740 for (i
= 0; tags
&& tags
[i
]; i
++) {
2741 const AVCodecTag
*codec_tags
= tags
[i
];
2742 while (codec_tags
->id
!= AV_CODEC_ID_NONE
) {
2743 if (codec_tags
->id
== id
) {
2744 *tag
= codec_tags
->tag
;
2753 enum AVCodecID
av_codec_get_id(const AVCodecTag
*const *tags
, unsigned int tag
)
2756 for (i
= 0; tags
&& tags
[i
]; i
++) {
2757 enum AVCodecID id
= ff_codec_get_id(tags
[i
], tag
);
2758 if (id
!= AV_CODEC_ID_NONE
)
2761 return AV_CODEC_ID_NONE
;
2764 static void compute_chapters_end(AVFormatContext
*s
)
2767 int64_t max_time
= s
->duration
+
2768 ((s
->start_time
== AV_NOPTS_VALUE
) ? 0 : s
->start_time
);
2770 for (i
= 0; i
< s
->nb_chapters
; i
++)
2771 if (s
->chapters
[i
]->end
== AV_NOPTS_VALUE
) {
2772 AVChapter
*ch
= s
->chapters
[i
];
2773 int64_t end
= max_time
? av_rescale_q(max_time
, AV_TIME_BASE_Q
,
2777 for (j
= 0; j
< s
->nb_chapters
; j
++) {
2778 AVChapter
*ch1
= s
->chapters
[j
];
2779 int64_t next_start
= av_rescale_q(ch1
->start
, ch1
->time_base
,
2781 if (j
!= i
&& next_start
> ch
->start
&& next_start
< end
)
2784 ch
->end
= (end
== INT64_MAX
) ? ch
->start
: end
;
2788 static int get_std_framerate(int i
)
2791 return (i
+ 1) * 1001;
2795 return ((const int[]) { 40, 48, 50, 60, 80, 120, 240})[i
] * 1001 * 12;
2799 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i
] * 1000 * 12;
2802 /* Is the time base unreliable?
2803 * This is a heuristic to balance between quick acceptance of the values in
2804 * the headers vs. some extra checks.
2805 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2806 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2807 * And there are "variable" fps files this needs to detect as well. */
2808 static int tb_unreliable(AVCodecContext
*c
)
2810 if (c
->time_base
.den
>= 101L * c
->time_base
.num
||
2811 c
->time_base
.den
< 5L * c
->time_base
.num
||
2812 // c->codec_tag == AV_RL32("DIVX") ||
2813 // c->codec_tag == AV_RL32("XVID") ||
2814 c
->codec_tag
== AV_RL32("mp4v") ||
2815 c
->codec_id
== AV_CODEC_ID_MPEG2VIDEO
||
2816 c
->codec_id
== AV_CODEC_ID_GIF
||
2817 c
->codec_id
== AV_CODEC_ID_H264
)
2822 int ff_alloc_extradata(AVCodecContext
*avctx
, int size
)
2826 if (size
< 0 || size
>= INT32_MAX
- FF_INPUT_BUFFER_PADDING_SIZE
) {
2827 avctx
->extradata_size
= 0;
2828 return AVERROR(EINVAL
);
2830 avctx
->extradata
= av_malloc(size
+ FF_INPUT_BUFFER_PADDING_SIZE
);
2831 if (avctx
->extradata
) {
2832 memset(avctx
->extradata
+ size
, 0, FF_INPUT_BUFFER_PADDING_SIZE
);
2833 avctx
->extradata_size
= size
;
2836 avctx
->extradata_size
= 0;
2837 ret
= AVERROR(ENOMEM
);
2842 int ff_get_extradata(AVCodecContext
*avctx
, AVIOContext
*pb
, int size
)
2844 int ret
= ff_alloc_extradata(avctx
, size
);
2847 ret
= avio_read(pb
, avctx
->extradata
, size
);
2849 av_freep(&avctx
->extradata
);
2850 avctx
->extradata_size
= 0;
2851 av_log(avctx
, AV_LOG_ERROR
, "Failed to read extradata of size %d\n", size
);
2852 return ret
< 0 ? ret
: AVERROR_INVALIDDATA
;
2858 int ff_rfps_add_frame(AVFormatContext
*ic
, AVStream
*st
, int64_t ts
)
2861 int64_t last
= st
->info
->last_dts
;
2863 if ( ts
!= AV_NOPTS_VALUE
&& last
!= AV_NOPTS_VALUE
&& ts
> last
2864 && ts
- (uint64_t)last
< INT64_MAX
) {
2865 double dts
= (is_relative(ts
) ? ts
- RELATIVE_TS_BASE
: ts
) * av_q2d(st
->time_base
);
2866 int64_t duration
= ts
- last
;
2868 if (!st
->info
->duration_error
)
2869 st
->info
->duration_error
= av_mallocz(sizeof(st
->info
->duration_error
[0])*2);
2870 if (!st
->info
->duration_error
)
2871 return AVERROR(ENOMEM
);
2873 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2874 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2875 for (i
= 0; i
<MAX_STD_TIMEBASES
; i
++) {
2876 if (st
->info
->duration_error
[0][1][i
] < 1e10
) {
2877 int framerate
= get_std_framerate(i
);
2878 double sdts
= dts
*framerate
/(1001*12);
2879 for (j
= 0; j
<2; j
++) {
2880 int64_t ticks
= llrint(sdts
+j
*0.5);
2881 double error
= sdts
- ticks
+ j
*0.5;
2882 st
->info
->duration_error
[j
][0][i
] += error
;
2883 st
->info
->duration_error
[j
][1][i
] += error
*error
;
2887 st
->info
->duration_count
++;
2888 st
->info
->rfps_duration_sum
+= duration
;
2890 if (st
->info
->duration_count
% 10 == 0) {
2891 int n
= st
->info
->duration_count
;
2892 for (i
= 0; i
<MAX_STD_TIMEBASES
; i
++) {
2893 if (st
->info
->duration_error
[0][1][i
] < 1e10
) {
2894 double a0
= st
->info
->duration_error
[0][0][i
] / n
;
2895 double error0
= st
->info
->duration_error
[0][1][i
] / n
- a0
*a0
;
2896 double a1
= st
->info
->duration_error
[1][0][i
] / n
;
2897 double error1
= st
->info
->duration_error
[1][1][i
] / n
- a1
*a1
;
2898 if (error0
> 0.04 && error1
> 0.04) {
2899 st
->info
->duration_error
[0][1][i
] = 2e10
;
2900 st
->info
->duration_error
[1][1][i
] = 2e10
;
2906 // ignore the first 4 values, they might have some random jitter
2907 if (st
->info
->duration_count
> 3 && is_relative(ts
) == is_relative(last
))
2908 st
->info
->duration_gcd
= av_gcd(st
->info
->duration_gcd
, duration
);
2910 if (ts
!= AV_NOPTS_VALUE
)
2911 st
->info
->last_dts
= ts
;
2916 void ff_rfps_calculate(AVFormatContext
*ic
)
2920 for (i
= 0; i
< ic
->nb_streams
; i
++) {
2921 AVStream
*st
= ic
->streams
[i
];
2923 if (st
->codec
->codec_type
!= AVMEDIA_TYPE_VIDEO
)
2925 // the check for tb_unreliable() is not completely correct, since this is not about handling
2926 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2927 // ipmovie.c produces.
2928 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
)
2929 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
);
2930 if (st
->info
->duration_count
>1 && !st
->r_frame_rate
.num
2931 && tb_unreliable(st
->codec
)) {
2933 double best_error
= 0.01;
2934 AVRational ref_rate
= st
->r_frame_rate
.num
? st
->r_frame_rate
: av_inv_q(st
->time_base
);
2936 for (j
= 0; j
<MAX_STD_TIMEBASES
; j
++) {
2939 if (st
->info
->codec_info_duration
&& st
->info
->codec_info_duration
*av_q2d(st
->time_base
) < (1001*12.0)/get_std_framerate(j
))
2941 if (!st
->info
->codec_info_duration
&& 1.0 < (1001*12.0)/get_std_framerate(j
))
2944 if (av_q2d(st
->time_base
) * st
->info
->rfps_duration_sum
/ st
->info
->duration_count
< (1001*12.0 * 0.8)/get_std_framerate(j
))
2947 for (k
= 0; k
<2; k
++) {
2948 int n
= st
->info
->duration_count
;
2949 double a
= st
->info
->duration_error
[k
][0][j
] / n
;
2950 double error
= st
->info
->duration_error
[k
][1][j
]/n
- a
*a
;
2952 if (error
< best_error
&& best_error
> 0.000000001) {
2954 num
= get_std_framerate(j
);
2957 av_log(NULL
, AV_LOG_DEBUG
, "rfps: %f %f\n", get_std_framerate(j
) / 12.0/1001, error
);
2960 // do not increase frame rate by more than 1 % in order to match a standard rate.
2961 if (num
&& (!ref_rate
.num
|| (double)num
/(12*1001) < 1.01 * av_q2d(ref_rate
)))
2962 av_reduce(&st
->r_frame_rate
.num
, &st
->r_frame_rate
.den
, num
, 12*1001, INT_MAX
);
2964 if ( !st
->avg_frame_rate
.num
2965 && st
->r_frame_rate
.num
&& st
->info
->rfps_duration_sum
2966 && st
->info
->codec_info_duration
<= 0
2967 && st
->info
->duration_count
> 2
2968 && 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
2970 av_log(ic
, AV_LOG_DEBUG
, "Setting avg frame rate based on r frame rate\n");
2971 st
->avg_frame_rate
= st
->r_frame_rate
;
2974 av_freep(&st
->info
->duration_error
);
2975 st
->info
->last_dts
= AV_NOPTS_VALUE
;
2976 st
->info
->duration_count
= 0;
2977 st
->info
->rfps_duration_sum
= 0;
2981 int avformat_find_stream_info(AVFormatContext
*ic
, AVDictionary
**options
)
2983 int i
, count
, ret
= 0, j
;
2986 AVPacket pkt1
, *pkt
;
2987 int64_t old_offset
= avio_tell(ic
->pb
);
2988 // new streams might appear, no options for those
2989 int orig_nb_streams
= ic
->nb_streams
;
2991 int64_t max_analyze_duration
= ic
->max_analyze_duration2
;
2992 int64_t max_stream_analyze_duration
;
2993 int64_t probesize
= ic
->probesize2
;
2995 if (!max_analyze_duration
)
2996 max_analyze_duration
= ic
->max_analyze_duration
;
2998 probesize
= ic
->probesize
;
2999 flush_codecs
= probesize
> 0;
3001 av_opt_set(ic
, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN
);
3003 max_stream_analyze_duration
= max_analyze_duration
;
3004 if (!max_analyze_duration
) {
3005 max_stream_analyze_duration
=
3006 max_analyze_duration
= 5*AV_TIME_BASE
;
3007 if (!strcmp(ic
->iformat
->name
, "flv"))
3008 max_stream_analyze_duration
= 30*AV_TIME_BASE
;
3012 av_log(ic
, AV_LOG_DEBUG
, "Before avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d\n",
3013 avio_tell(ic
->pb
), ic
->pb
->bytes_read
, ic
->pb
->seek_count
);
3015 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3016 const AVCodec
*codec
;
3017 AVDictionary
*thread_opt
= NULL
;
3018 st
= ic
->streams
[i
];
3020 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
||
3021 st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
) {
3022 /* if (!st->time_base.num)
3024 if (!st
->codec
->time_base
.num
)
3025 st
->codec
->time_base
= st
->time_base
;
3027 // only for the split stuff
3028 if (!st
->parser
&& !(ic
->flags
& AVFMT_FLAG_NOPARSE
)) {
3029 st
->parser
= av_parser_init(st
->codec
->codec_id
);
3031 if (st
->need_parsing
== AVSTREAM_PARSE_HEADERS
) {
3032 st
->parser
->flags
|= PARSER_FLAG_COMPLETE_FRAMES
;
3033 } else if (st
->need_parsing
== AVSTREAM_PARSE_FULL_RAW
) {
3034 st
->parser
->flags
|= PARSER_FLAG_USE_CODEC_TS
;
3036 } else if (st
->need_parsing
) {
3037 av_log(ic
, AV_LOG_VERBOSE
, "parser not found for codec "
3038 "%s, packets or times may be invalid.\n",
3039 avcodec_get_name(st
->codec
->codec_id
));
3042 codec
= find_decoder(ic
, st
, st
->codec
->codec_id
);
3044 /* Force thread count to 1 since the H.264 decoder will not extract
3045 * SPS and PPS to extradata during multi-threaded decoding. */
3046 av_dict_set(options
? &options
[i
] : &thread_opt
, "threads", "1", 0);
3048 if (ic
->codec_whitelist
)
3049 av_dict_set(options
? &options
[i
] : &thread_opt
, "codec_whitelist", ic
->codec_whitelist
, 0);
3051 /* Ensure that subtitle_header is properly set. */
3052 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
3053 && codec
&& !st
->codec
->codec
) {
3054 if (avcodec_open2(st
->codec
, codec
, options
? &options
[i
] : &thread_opt
) < 0)
3055 av_log(ic
, AV_LOG_WARNING
,
3056 "Failed to open codec in av_find_stream_info\n");
3059 // Try to just open decoders, in case this is enough to get parameters.
3060 if (!has_codec_parameters(st
, NULL
) && st
->request_probe
<= 0) {
3061 if (codec
&& !st
->codec
->codec
)
3062 if (avcodec_open2(st
->codec
, codec
, options
? &options
[i
] : &thread_opt
) < 0)
3063 av_log(ic
, AV_LOG_WARNING
,
3064 "Failed to open codec in av_find_stream_info\n");
3067 av_dict_free(&thread_opt
);
3070 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3071 #if FF_API_R_FRAME_RATE
3072 ic
->streams
[i
]->info
->last_dts
= AV_NOPTS_VALUE
;
3074 ic
->streams
[i
]->info
->fps_first_dts
= AV_NOPTS_VALUE
;
3075 ic
->streams
[i
]->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3081 int analyzed_all_streams
;
3082 if (ff_check_interrupt(&ic
->interrupt_callback
)) {
3084 av_log(ic
, AV_LOG_DEBUG
, "interrupted\n");
3088 /* check if one codec still needs to be handled */
3089 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3090 int fps_analyze_framecount
= 20;
3092 st
= ic
->streams
[i
];
3093 if (!has_codec_parameters(st
, NULL
))
3095 /* If the timebase is coarse (like the usual millisecond precision
3096 * of mkv), we need to analyze more frames to reliably arrive at
3097 * the correct fps. */
3098 if (av_q2d(st
->time_base
) > 0.0005)
3099 fps_analyze_framecount
*= 2;
3100 if (!tb_unreliable(st
->codec
))
3101 fps_analyze_framecount
= 0;
3102 if (ic
->fps_probe_size
>= 0)
3103 fps_analyze_framecount
= ic
->fps_probe_size
;
3104 if (st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
)
3105 fps_analyze_framecount
= 0;
3106 /* variable fps and no guess at the real fps */
3107 if (!(st
->r_frame_rate
.num
&& st
->avg_frame_rate
.num
) &&
3108 st
->info
->duration_count
< fps_analyze_framecount
&&
3109 st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)
3111 if (st
->parser
&& st
->parser
->parser
->split
&&
3112 !st
->codec
->extradata
)
3114 if (st
->first_dts
== AV_NOPTS_VALUE
&&
3115 !(ic
->iformat
->flags
& AVFMT_NOTIMESTAMPS
) &&
3116 st
->codec_info_nb_frames
< ic
->max_ts_probe
&&
3117 (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
||
3118 st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
))
3121 analyzed_all_streams
= 0;
3122 if (i
== ic
->nb_streams
) {
3123 analyzed_all_streams
= 1;
3124 /* NOTE: If the format has no header, then we need to read some
3125 * packets to get most of the streams, so we cannot stop here. */
3126 if (!(ic
->ctx_flags
& AVFMTCTX_NOHEADER
)) {
3127 /* If we found the info for all the codecs, we can stop. */
3129 av_log(ic
, AV_LOG_DEBUG
, "All info found\n");
3134 /* We did not get all the codec info, but we read too much data. */
3135 if (read_size
>= probesize
) {
3137 av_log(ic
, AV_LOG_DEBUG
,
3138 "Probe buffer size limit of %"PRId64
" bytes reached\n", probesize
);
3139 for (i
= 0; i
< ic
->nb_streams
; i
++)
3140 if (!ic
->streams
[i
]->r_frame_rate
.num
&&
3141 ic
->streams
[i
]->info
->duration_count
<= 1 &&
3142 ic
->streams
[i
]->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
3143 strcmp(ic
->iformat
->name
, "image2"))
3144 av_log(ic
, AV_LOG_WARNING
,
3145 "Stream #%d: not enough frames to estimate rate; "
3146 "consider increasing probesize\n", i
);
3150 /* NOTE: A new stream can be added there if no header in file
3151 * (AVFMTCTX_NOHEADER). */
3152 ret
= read_frame_internal(ic
, &pkt1
);
3153 if (ret
== AVERROR(EAGAIN
))
3161 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3162 free_packet_buffer(&ic
->packet_buffer
, &ic
->packet_buffer_end
);
3164 pkt
= add_to_pktbuf(&ic
->packet_buffer
, &pkt1
,
3165 &ic
->packet_buffer_end
);
3167 ret
= AVERROR(ENOMEM
);
3168 goto find_stream_info_err
;
3170 if ((ret
= av_dup_packet(pkt
)) < 0)
3171 goto find_stream_info_err
;
3174 st
= ic
->streams
[pkt
->stream_index
];
3175 if (!(st
->disposition
& AV_DISPOSITION_ATTACHED_PIC
))
3176 read_size
+= pkt
->size
;
3178 if (pkt
->dts
!= AV_NOPTS_VALUE
&& st
->codec_info_nb_frames
> 1) {
3179 /* check for non-increasing dts */
3180 if (st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
&&
3181 st
->info
->fps_last_dts
>= pkt
->dts
) {
3182 av_log(ic
, AV_LOG_DEBUG
,
3183 "Non-increasing DTS in stream %d: packet %d with DTS "
3184 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3185 st
->index
, st
->info
->fps_last_dts_idx
,
3186 st
->info
->fps_last_dts
, st
->codec_info_nb_frames
,
3188 st
->info
->fps_first_dts
=
3189 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3191 /* Check for a discontinuity in dts. If the difference in dts
3192 * is more than 1000 times the average packet duration in the
3193 * sequence, we treat it as a discontinuity. */
3194 if (st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
&&
3195 st
->info
->fps_last_dts_idx
> st
->info
->fps_first_dts_idx
&&
3196 (pkt
->dts
- st
->info
->fps_last_dts
) / 1000 >
3197 (st
->info
->fps_last_dts
- st
->info
->fps_first_dts
) /
3198 (st
->info
->fps_last_dts_idx
- st
->info
->fps_first_dts_idx
)) {
3199 av_log(ic
, AV_LOG_WARNING
,
3200 "DTS discontinuity in stream %d: packet %d with DTS "
3201 "%"PRId64
", packet %d with DTS %"PRId64
"\n",
3202 st
->index
, st
->info
->fps_last_dts_idx
,
3203 st
->info
->fps_last_dts
, st
->codec_info_nb_frames
,
3205 st
->info
->fps_first_dts
=
3206 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3209 /* update stored dts values */
3210 if (st
->info
->fps_first_dts
== AV_NOPTS_VALUE
) {
3211 st
->info
->fps_first_dts
= pkt
->dts
;
3212 st
->info
->fps_first_dts_idx
= st
->codec_info_nb_frames
;
3214 st
->info
->fps_last_dts
= pkt
->dts
;
3215 st
->info
->fps_last_dts_idx
= st
->codec_info_nb_frames
;
3217 if (st
->codec_info_nb_frames
>1) {
3220 if (st
->time_base
.den
> 0)
3221 t
= av_rescale_q(st
->info
->codec_info_duration
, st
->time_base
, AV_TIME_BASE_Q
);
3222 if (st
->avg_frame_rate
.num
> 0)
3223 t
= FFMAX(t
, av_rescale_q(st
->codec_info_nb_frames
, av_inv_q(st
->avg_frame_rate
), AV_TIME_BASE_Q
));
3226 && st
->codec_info_nb_frames
>30
3227 && st
->info
->fps_first_dts
!= AV_NOPTS_VALUE
3228 && st
->info
->fps_last_dts
!= AV_NOPTS_VALUE
)
3229 t
= FFMAX(t
, av_rescale_q(st
->info
->fps_last_dts
- st
->info
->fps_first_dts
, st
->time_base
, AV_TIME_BASE_Q
));
3231 if (t
>= (analyzed_all_streams
? max_analyze_duration
: max_stream_analyze_duration
)) {
3232 av_log(ic
, AV_LOG_VERBOSE
, "max_analyze_duration %"PRId64
" reached at %"PRId64
" microseconds\n",
3233 max_analyze_duration
,
3235 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3236 av_packet_unref(pkt
);
3239 if (pkt
->duration
) {
3240 st
->info
->codec_info_duration
+= pkt
->duration
;
3241 st
->info
->codec_info_duration_fields
+= st
->parser
&& st
->need_parsing
&& st
->codec
->ticks_per_frame
==2 ? st
->parser
->repeat_pict
+ 1 : 2;
3244 #if FF_API_R_FRAME_RATE
3245 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
)
3246 ff_rfps_add_frame(ic
, st
, pkt
->dts
);
3248 if (st
->parser
&& st
->parser
->parser
->split
&& !st
->codec
->extradata
) {
3249 int i
= st
->parser
->parser
->split(st
->codec
, pkt
->data
, pkt
->size
);
3250 if (i
> 0 && i
< FF_MAX_EXTRADATA_SIZE
) {
3251 if (ff_alloc_extradata(st
->codec
, i
))
3252 return AVERROR(ENOMEM
);
3253 memcpy(st
->codec
->extradata
, pkt
->data
,
3254 st
->codec
->extradata_size
);
3258 /* If still no information, we try to open the codec and to
3259 * decompress the frame. We try to avoid that in most cases as
3260 * it takes longer and uses more memory. For MPEG-4, we need to
3261 * decompress for QuickTime.
3263 * If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3264 * least one frame of codec data, this makes sure the codec initializes
3265 * the channel configuration and does not only trust the values from
3267 try_decode_frame(ic
, st
, pkt
,
3268 (options
&& i
< orig_nb_streams
) ? &options
[i
] : NULL
);
3270 if (ic
->flags
& AVFMT_FLAG_NOBUFFER
)
3271 av_packet_unref(pkt
);
3273 st
->codec_info_nb_frames
++;
3278 AVPacket empty_pkt
= { 0 };
3280 av_init_packet(&empty_pkt
);
3282 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3284 st
= ic
->streams
[i
];
3286 /* flush the decoders */
3287 if (st
->info
->found_decoder
== 1) {
3289 err
= try_decode_frame(ic
, st
, &empty_pkt
,
3290 (options
&& i
< orig_nb_streams
)
3291 ? &options
[i
] : NULL
);
3292 } while (err
> 0 && !has_codec_parameters(st
, NULL
));
3295 av_log(ic
, AV_LOG_INFO
,
3296 "decoding for stream %d failed\n", st
->index
);
3302 // close codecs which were opened in try_decode_frame()
3303 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3304 st
= ic
->streams
[i
];
3305 avcodec_close(st
->codec
);
3308 ff_rfps_calculate(ic
);
3310 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3311 st
= ic
->streams
[i
];
3312 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
3313 if (st
->codec
->codec_id
== AV_CODEC_ID_RAWVIDEO
&& !st
->codec
->codec_tag
&& !st
->codec
->bits_per_coded_sample
) {
3314 uint32_t tag
= avcodec_pix_fmt_to_codec_tag(st
->codec
->pix_fmt
);
3315 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag
) == st
->codec
->pix_fmt
)
3316 st
->codec
->codec_tag
= tag
;
3319 /* estimate average framerate if not set by demuxer */
3320 if (st
->info
->codec_info_duration_fields
&&
3321 !st
->avg_frame_rate
.num
&&
3322 st
->info
->codec_info_duration
) {
3324 double best_error
= 0.01;
3326 if (st
->info
->codec_info_duration
>= INT64_MAX
/ st
->time_base
.num
/ 2||
3327 st
->info
->codec_info_duration_fields
>= INT64_MAX
/ st
->time_base
.den
||
3328 st
->info
->codec_info_duration
< 0)
3330 av_reduce(&st
->avg_frame_rate
.num
, &st
->avg_frame_rate
.den
,
3331 st
->info
->codec_info_duration_fields
* (int64_t) st
->time_base
.den
,
3332 st
->info
->codec_info_duration
* 2 * (int64_t) st
->time_base
.num
, 60000);
3334 /* Round guessed framerate to a "standard" framerate if it's
3335 * within 1% of the original estimate. */
3336 for (j
= 0; j
< MAX_STD_TIMEBASES
; j
++) {
3337 AVRational std_fps
= { get_std_framerate(j
), 12 * 1001 };
3338 double error
= fabs(av_q2d(st
->avg_frame_rate
) /
3339 av_q2d(std_fps
) - 1);
3341 if (error
< best_error
) {
3343 best_fps
= std_fps
.num
;
3347 av_reduce(&st
->avg_frame_rate
.num
, &st
->avg_frame_rate
.den
,
3348 best_fps
, 12 * 1001, INT_MAX
);
3351 if (!st
->r_frame_rate
.num
) {
3352 if ( st
->codec
->time_base
.den
* (int64_t) st
->time_base
.num
3353 <= st
->codec
->time_base
.num
* st
->codec
->ticks_per_frame
* (int64_t) st
->time_base
.den
) {
3354 st
->r_frame_rate
.num
= st
->codec
->time_base
.den
;
3355 st
->r_frame_rate
.den
= st
->codec
->time_base
.num
* st
->codec
->ticks_per_frame
;
3357 st
->r_frame_rate
.num
= st
->time_base
.den
;
3358 st
->r_frame_rate
.den
= st
->time_base
.num
;
3361 if (st
->display_aspect_ratio
.num
&& st
->display_aspect_ratio
.den
) {
3362 AVRational hw_ratio
= { st
->codec
->height
, st
->codec
->width
};
3363 st
->sample_aspect_ratio
= av_mul_q(st
->display_aspect_ratio
,
3366 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
3367 if (!st
->codec
->bits_per_coded_sample
)
3368 st
->codec
->bits_per_coded_sample
=
3369 av_get_bits_per_sample(st
->codec
->codec_id
);
3370 // set stream disposition based on audio service type
3371 switch (st
->codec
->audio_service_type
) {
3372 case AV_AUDIO_SERVICE_TYPE_EFFECTS
:
3373 st
->disposition
= AV_DISPOSITION_CLEAN_EFFECTS
;
3375 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED
:
3376 st
->disposition
= AV_DISPOSITION_VISUAL_IMPAIRED
;
3378 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED
:
3379 st
->disposition
= AV_DISPOSITION_HEARING_IMPAIRED
;
3381 case AV_AUDIO_SERVICE_TYPE_COMMENTARY
:
3382 st
->disposition
= AV_DISPOSITION_COMMENT
;
3384 case AV_AUDIO_SERVICE_TYPE_KARAOKE
:
3385 st
->disposition
= AV_DISPOSITION_KARAOKE
;
3392 estimate_timings(ic
, old_offset
);
3394 av_opt_set(ic
, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN
);
3396 if (ret
>= 0 && ic
->nb_streams
)
3397 /* We could not have all the codec parameters before EOF. */
3399 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3401 st
= ic
->streams
[i
];
3402 if (!has_codec_parameters(st
, &errmsg
)) {
3404 avcodec_string(buf
, sizeof(buf
), st
->codec
, 0);
3405 av_log(ic
, AV_LOG_WARNING
,
3406 "Could not find codec parameters for stream %d (%s): %s\n"
3407 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3414 compute_chapters_end(ic
);
3416 find_stream_info_err
:
3417 for (i
= 0; i
< ic
->nb_streams
; i
++) {
3418 st
= ic
->streams
[i
];
3419 if (ic
->streams
[i
]->codec
->codec_type
!= AVMEDIA_TYPE_AUDIO
)
3420 ic
->streams
[i
]->codec
->thread_count
= 0;
3422 av_freep(&st
->info
->duration_error
);
3423 av_freep(&ic
->streams
[i
]->info
);
3426 av_log(ic
, AV_LOG_DEBUG
, "After avformat_find_stream_info() pos: %"PRId64
" bytes read:%"PRId64
" seeks:%d frames:%d\n",
3427 avio_tell(ic
->pb
), ic
->pb
->bytes_read
, ic
->pb
->seek_count
, count
);
3431 AVProgram
*av_find_program_from_stream(AVFormatContext
*ic
, AVProgram
*last
, int s
)
3435 for (i
= 0; i
< ic
->nb_programs
; i
++) {
3436 if (ic
->programs
[i
] == last
) {
3440 for (j
= 0; j
< ic
->programs
[i
]->nb_stream_indexes
; j
++)
3441 if (ic
->programs
[i
]->stream_index
[j
] == s
)
3442 return ic
->programs
[i
];
3448 int av_find_best_stream(AVFormatContext
*ic
, enum AVMediaType type
,
3449 int wanted_stream_nb
, int related_stream
,
3450 AVCodec
**decoder_ret
, int flags
)
3452 int i
, nb_streams
= ic
->nb_streams
;
3453 int ret
= AVERROR_STREAM_NOT_FOUND
, best_count
= -1, best_bitrate
= -1, best_multiframe
= -1, count
, bitrate
, multiframe
;
3454 unsigned *program
= NULL
;
3455 const AVCodec
*decoder
= NULL
, *best_decoder
= NULL
;
3457 if (related_stream
>= 0 && wanted_stream_nb
< 0) {
3458 AVProgram
*p
= av_find_program_from_stream(ic
, NULL
, related_stream
);
3460 program
= p
->stream_index
;
3461 nb_streams
= p
->nb_stream_indexes
;
3464 for (i
= 0; i
< nb_streams
; i
++) {
3465 int real_stream_index
= program
? program
[i
] : i
;
3466 AVStream
*st
= ic
->streams
[real_stream_index
];
3467 AVCodecContext
*avctx
= st
->codec
;
3468 if (avctx
->codec_type
!= type
)
3470 if (wanted_stream_nb
>= 0 && real_stream_index
!= wanted_stream_nb
)
3472 if (wanted_stream_nb
!= real_stream_index
&&
3473 st
->disposition
& (AV_DISPOSITION_HEARING_IMPAIRED
|
3474 AV_DISPOSITION_VISUAL_IMPAIRED
))
3476 if (type
== AVMEDIA_TYPE_AUDIO
&& !avctx
->channels
)
3479 decoder
= find_decoder(ic
, st
, st
->codec
->codec_id
);
3482 ret
= AVERROR_DECODER_NOT_FOUND
;
3486 count
= st
->codec_info_nb_frames
;
3487 bitrate
= avctx
->bit_rate
;
3489 bitrate
= avctx
->rc_max_rate
;
3490 multiframe
= FFMIN(5, count
);
3491 if ((best_multiframe
> multiframe
) ||
3492 (best_multiframe
== multiframe
&& best_bitrate
> bitrate
) ||
3493 (best_multiframe
== multiframe
&& best_bitrate
== bitrate
&& best_count
>= count
))
3496 best_bitrate
= bitrate
;
3497 best_multiframe
= multiframe
;
3498 ret
= real_stream_index
;
3499 best_decoder
= decoder
;
3500 if (program
&& i
== nb_streams
- 1 && ret
< 0) {
3502 nb_streams
= ic
->nb_streams
;
3503 /* no related stream found, try again with everything */
3508 *decoder_ret
= (AVCodec
*)best_decoder
;
3512 /*******************************************************/
3514 int av_read_play(AVFormatContext
*s
)
3516 if (s
->iformat
->read_play
)
3517 return s
->iformat
->read_play(s
);
3519 return avio_pause(s
->pb
, 0);
3520 return AVERROR(ENOSYS
);
3523 int av_read_pause(AVFormatContext
*s
)
3525 if (s
->iformat
->read_pause
)
3526 return s
->iformat
->read_pause(s
);
3528 return avio_pause(s
->pb
, 1);
3529 return AVERROR(ENOSYS
);
3532 void ff_free_stream(AVFormatContext
*s
, AVStream
*st
) {
3534 av_assert0(s
->nb_streams
>0);
3535 av_assert0(s
->streams
[ s
->nb_streams
- 1 ] == st
);
3537 for (j
= 0; j
< st
->nb_side_data
; j
++)
3538 av_freep(&st
->side_data
[j
].data
);
3539 av_freep(&st
->side_data
);
3540 st
->nb_side_data
= 0;
3543 av_parser_close(st
->parser
);
3545 if (st
->attached_pic
.data
)
3546 av_free_packet(&st
->attached_pic
);
3547 av_dict_free(&st
->metadata
);
3548 av_freep(&st
->probe_data
.buf
);
3549 av_freep(&st
->index_entries
);
3550 av_freep(&st
->codec
->extradata
);
3551 av_freep(&st
->codec
->subtitle_header
);
3552 av_freep(&st
->codec
);
3553 av_freep(&st
->priv_data
);
3555 av_freep(&st
->info
->duration_error
);
3556 av_freep(&st
->info
);
3557 av_freep(&st
->recommended_encoder_configuration
);
3558 av_freep(&s
->streams
[ --s
->nb_streams
]);
3561 void avformat_free_context(AVFormatContext
*s
)
3569 if (s
->iformat
&& s
->iformat
->priv_class
&& s
->priv_data
)
3570 av_opt_free(s
->priv_data
);
3571 if (s
->oformat
&& s
->oformat
->priv_class
&& s
->priv_data
)
3572 av_opt_free(s
->priv_data
);
3574 for (i
= s
->nb_streams
- 1; i
>= 0; i
--) {
3575 ff_free_stream(s
, s
->streams
[i
]);
3577 for (i
= s
->nb_programs
- 1; i
>= 0; i
--) {
3578 av_dict_free(&s
->programs
[i
]->metadata
);
3579 av_freep(&s
->programs
[i
]->stream_index
);
3580 av_freep(&s
->programs
[i
]);
3582 av_freep(&s
->programs
);
3583 av_freep(&s
->priv_data
);
3584 while (s
->nb_chapters
--) {
3585 av_dict_free(&s
->chapters
[s
->nb_chapters
]->metadata
);
3586 av_freep(&s
->chapters
[s
->nb_chapters
]);
3588 av_freep(&s
->chapters
);
3589 av_dict_free(&s
->metadata
);
3590 av_freep(&s
->streams
);
3591 av_freep(&s
->internal
);
3592 flush_packet_queue(s
);
3596 void avformat_close_input(AVFormatContext
**ps
)
3607 if ((s
->iformat
&& strcmp(s
->iformat
->name
, "image2") && s
->iformat
->flags
& AVFMT_NOFILE
) ||
3608 (s
->flags
& AVFMT_FLAG_CUSTOM_IO
))
3611 flush_packet_queue(s
);
3614 if (s
->iformat
->read_close
)
3615 s
->iformat
->read_close(s
);
3617 avformat_free_context(s
);
3624 AVStream
*avformat_new_stream(AVFormatContext
*s
, const AVCodec
*c
)
3630 if (s
->nb_streams
>= INT_MAX
/sizeof(*streams
))
3632 streams
= av_realloc_array(s
->streams
, s
->nb_streams
+ 1, sizeof(*streams
));
3635 s
->streams
= streams
;
3637 st
= av_mallocz(sizeof(AVStream
));
3640 if (!(st
->info
= av_mallocz(sizeof(*st
->info
)))) {
3644 st
->info
->last_dts
= AV_NOPTS_VALUE
;
3646 st
->codec
= avcodec_alloc_context3(c
);
3648 /* no default bitrate if decoding */
3649 st
->codec
->bit_rate
= 0;
3651 /* default pts setting is MPEG-like */
3652 avpriv_set_pts_info(st
, 33, 1, 90000);
3655 st
->index
= s
->nb_streams
;
3656 st
->start_time
= AV_NOPTS_VALUE
;
3657 st
->duration
= AV_NOPTS_VALUE
;
3658 /* we set the current DTS to 0 so that formats without any timestamps
3659 * but durations get some timestamps, formats with some unknown
3660 * timestamps have their first few packets buffered and the
3661 * timestamps corrected before they are returned to the user */
3662 st
->cur_dts
= s
->iformat
? RELATIVE_TS_BASE
: 0;
3663 st
->first_dts
= AV_NOPTS_VALUE
;
3664 st
->probe_packets
= MAX_PROBE_PACKETS
;
3665 st
->pts_wrap_reference
= AV_NOPTS_VALUE
;
3666 st
->pts_wrap_behavior
= AV_PTS_WRAP_IGNORE
;
3668 st
->last_IP_pts
= AV_NOPTS_VALUE
;
3669 st
->last_dts_for_order_check
= AV_NOPTS_VALUE
;
3670 for (i
= 0; i
< MAX_REORDER_DELAY
+ 1; i
++)
3671 st
->pts_buffer
[i
] = AV_NOPTS_VALUE
;
3673 st
->sample_aspect_ratio
= (AVRational
) { 0, 1 };
3675 #if FF_API_R_FRAME_RATE
3676 st
->info
->last_dts
= AV_NOPTS_VALUE
;
3678 st
->info
->fps_first_dts
= AV_NOPTS_VALUE
;
3679 st
->info
->fps_last_dts
= AV_NOPTS_VALUE
;
3681 st
->inject_global_side_data
= s
->internal
->inject_global_side_data
;
3683 s
->streams
[s
->nb_streams
++] = st
;
3687 AVProgram
*av_new_program(AVFormatContext
*ac
, int id
)
3689 AVProgram
*program
= NULL
;
3692 av_dlog(ac
, "new_program: id=0x%04x\n", id
);
3694 for (i
= 0; i
< ac
->nb_programs
; i
++)
3695 if (ac
->programs
[i
]->id
== id
)
3696 program
= ac
->programs
[i
];
3699 program
= av_mallocz(sizeof(AVProgram
));
3702 dynarray_add(&ac
->programs
, &ac
->nb_programs
, program
);
3703 program
->discard
= AVDISCARD_NONE
;
3706 program
->pts_wrap_reference
= AV_NOPTS_VALUE
;
3707 program
->pts_wrap_behavior
= AV_PTS_WRAP_IGNORE
;
3709 program
->start_time
=
3710 program
->end_time
= AV_NOPTS_VALUE
;
3715 AVChapter
*avpriv_new_chapter(AVFormatContext
*s
, int id
, AVRational time_base
,
3716 int64_t start
, int64_t end
, const char *title
)
3718 AVChapter
*chapter
= NULL
;
3721 if (end
!= AV_NOPTS_VALUE
&& start
> end
) {
3722 av_log(s
, AV_LOG_ERROR
, "Chapter end time %"PRId64
" before start %"PRId64
"\n", end
, start
);
3726 for (i
= 0; i
< s
->nb_chapters
; i
++)
3727 if (s
->chapters
[i
]->id
== id
)
3728 chapter
= s
->chapters
[i
];
3731 chapter
= av_mallocz(sizeof(AVChapter
));
3734 dynarray_add(&s
->chapters
, &s
->nb_chapters
, chapter
);
3736 av_dict_set(&chapter
->metadata
, "title", title
, 0);
3738 chapter
->time_base
= time_base
;
3739 chapter
->start
= start
;
3745 void ff_program_add_stream_index(AVFormatContext
*ac
, int progid
, unsigned idx
)
3748 AVProgram
*program
= NULL
;
3751 if (idx
>= ac
->nb_streams
) {
3752 av_log(ac
, AV_LOG_ERROR
, "stream index %d is not valid\n", idx
);
3756 for (i
= 0; i
< ac
->nb_programs
; i
++) {
3757 if (ac
->programs
[i
]->id
!= progid
)
3759 program
= ac
->programs
[i
];
3760 for (j
= 0; j
< program
->nb_stream_indexes
; j
++)
3761 if (program
->stream_index
[j
] == idx
)
3764 tmp
= av_realloc_array(program
->stream_index
, program
->nb_stream_indexes
+1, sizeof(unsigned int));
3767 program
->stream_index
= tmp
;
3768 program
->stream_index
[program
->nb_stream_indexes
++] = idx
;
3773 uint64_t ff_ntp_time(void)
3775 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US
;
3778 int av_get_frame_filename(char *buf
, int buf_size
, const char *path
, int number
)
3781 char *q
, buf1
[20], c
;
3782 int nd
, len
, percentd_found
;
3794 while (av_isdigit(*p
))
3795 nd
= nd
* 10 + *p
++ - '0';
3797 } while (av_isdigit(c
));
3806 snprintf(buf1
, sizeof(buf1
), "%0*d", nd
, number
);
3808 if ((q
- buf
+ len
) > buf_size
- 1)
3810 memcpy(q
, buf1
, len
);
3818 if ((q
- buf
) < buf_size
- 1)
3822 if (!percentd_found
)
3831 void av_url_split(char *proto
, int proto_size
,
3832 char *authorization
, int authorization_size
,
3833 char *hostname
, int hostname_size
,
3834 int *port_ptr
, char *path
, int path_size
, const char *url
)
3836 const char *p
, *ls
, *ls2
, *at
, *at2
, *col
, *brk
;
3842 if (authorization_size
> 0)
3843 authorization
[0] = 0;
3844 if (hostname_size
> 0)
3849 /* parse protocol */
3850 if ((p
= strchr(url
, ':'))) {
3851 av_strlcpy(proto
, url
, FFMIN(proto_size
, p
+ 1 - url
));
3858 /* no protocol means plain filename */
3859 av_strlcpy(path
, url
, path_size
);
3863 /* separate path from hostname */
3864 ls
= strchr(p
, '/');
3865 ls2
= strchr(p
, '?');
3869 ls
= FFMIN(ls
, ls2
);
3871 av_strlcpy(path
, ls
, path_size
);
3873 ls
= &p
[strlen(p
)]; // XXX
3875 /* the rest is hostname, use that to parse auth/port */
3877 /* authorization (user[:pass]@hostname) */
3879 while ((at
= strchr(p
, '@')) && at
< ls
) {
3880 av_strlcpy(authorization
, at2
,
3881 FFMIN(authorization_size
, at
+ 1 - at2
));
3882 p
= at
+ 1; /* skip '@' */
3885 if (*p
== '[' && (brk
= strchr(p
, ']')) && brk
< ls
) {
3887 av_strlcpy(hostname
, p
+ 1,
3888 FFMIN(hostname_size
, brk
- p
));
3889 if (brk
[1] == ':' && port_ptr
)
3890 *port_ptr
= atoi(brk
+ 2);
3891 } else if ((col
= strchr(p
, ':')) && col
< ls
) {
3892 av_strlcpy(hostname
, p
,
3893 FFMIN(col
+ 1 - p
, hostname_size
));
3895 *port_ptr
= atoi(col
+ 1);
3897 av_strlcpy(hostname
, p
,
3898 FFMIN(ls
+ 1 - p
, hostname_size
));
3902 char *ff_data_to_hex(char *buff
, const uint8_t *src
, int s
, int lowercase
)
3905 static const char hex_table_uc
[16] = { '0', '1', '2', '3',
3908 'C', 'D', 'E', 'F' };
3909 static const char hex_table_lc
[16] = { '0', '1', '2', '3',
3912 'c', 'd', 'e', 'f' };
3913 const char *hex_table
= lowercase
? hex_table_lc
: hex_table_uc
;
3915 for (i
= 0; i
< s
; i
++) {
3916 buff
[i
* 2] = hex_table
[src
[i
] >> 4];
3917 buff
[i
* 2 + 1] = hex_table
[src
[i
] & 0xF];
3923 int ff_hex_to_data(uint8_t *data
, const char *p
)
3930 p
+= strspn(p
, SPACE_CHARS
);
3933 c
= av_toupper((unsigned char) *p
++);
3934 if (c
>= '0' && c
<= '9')
3936 else if (c
>= 'A' && c
<= 'F')
3951 void avpriv_set_pts_info(AVStream
*s
, int pts_wrap_bits
,
3952 unsigned int pts_num
, unsigned int pts_den
)
3955 if (av_reduce(&new_tb
.num
, &new_tb
.den
, pts_num
, pts_den
, INT_MAX
)) {
3956 if (new_tb
.num
!= pts_num
)
3957 av_log(NULL
, AV_LOG_DEBUG
,
3958 "st:%d removing common factor %d from timebase\n",
3959 s
->index
, pts_num
/ new_tb
.num
);
3961 av_log(NULL
, AV_LOG_WARNING
,
3962 "st:%d has too large timebase, reducing\n", s
->index
);
3964 if (new_tb
.num
<= 0 || new_tb
.den
<= 0) {
3965 av_log(NULL
, AV_LOG_ERROR
,
3966 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
3967 new_tb
.num
, new_tb
.den
,
3971 s
->time_base
= new_tb
;
3972 av_codec_set_pkt_timebase(s
->codec
, new_tb
);
3973 s
->pts_wrap_bits
= pts_wrap_bits
;
3976 void ff_parse_key_value(const char *str
, ff_parse_key_val_cb callback_get_buf
,
3979 const char *ptr
= str
;
3981 /* Parse key=value pairs. */
3984 char *dest
= NULL
, *dest_end
;
3985 int key_len
, dest_len
= 0;
3987 /* Skip whitespace and potential commas. */
3988 while (*ptr
&& (av_isspace(*ptr
) || *ptr
== ','))
3995 if (!(ptr
= strchr(key
, '=')))
3998 key_len
= ptr
- key
;
4000 callback_get_buf(context
, key
, key_len
, &dest
, &dest_len
);
4001 dest_end
= dest
+ dest_len
- 1;
4005 while (*ptr
&& *ptr
!= '\"') {
4009 if (dest
&& dest
< dest_end
)
4013 if (dest
&& dest
< dest_end
)
4021 for (; *ptr
&& !(av_isspace(*ptr
) || *ptr
== ','); ptr
++)
4022 if (dest
&& dest
< dest_end
)
4030 int ff_find_stream_index(AVFormatContext
*s
, int id
)
4033 for (i
= 0; i
< s
->nb_streams
; i
++)
4034 if (s
->streams
[i
]->id
== id
)
4039 int64_t ff_iso8601_to_unix_time(const char *datestr
)
4041 struct tm time1
= { 0 }, time2
= { 0 };
4043 ret1
= av_small_strptime(datestr
, "%Y - %m - %d %H:%M:%S", &time1
);
4044 ret2
= av_small_strptime(datestr
, "%Y - %m - %dT%H:%M:%S", &time2
);
4046 return av_timegm(&time2
);
4048 return av_timegm(&time1
);
4051 int avformat_query_codec(const AVOutputFormat
*ofmt
, enum AVCodecID codec_id
,
4055 if (ofmt
->query_codec
)
4056 return ofmt
->query_codec(codec_id
, std_compliance
);
4057 else if (ofmt
->codec_tag
)
4058 return !!av_codec_get_tag(ofmt
->codec_tag
, codec_id
);
4059 else if (codec_id
== ofmt
->video_codec
||
4060 codec_id
== ofmt
->audio_codec
||
4061 codec_id
== ofmt
->subtitle_codec
)
4064 return AVERROR_PATCHWELCOME
;
4067 int avformat_network_init(void)
4071 ff_network_inited_globally
= 1;
4072 if ((ret
= ff_network_init()) < 0)
4079 int avformat_network_deinit(void)
4088 int ff_add_param_change(AVPacket
*pkt
, int32_t channels
,
4089 uint64_t channel_layout
, int32_t sample_rate
,
4090 int32_t width
, int32_t height
)
4096 return AVERROR(EINVAL
);
4099 flags
|= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
;
4101 if (channel_layout
) {
4103 flags
|= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
;
4107 flags
|= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
;
4109 if (width
|| height
) {
4111 flags
|= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
;
4113 data
= av_packet_new_side_data(pkt
, AV_PKT_DATA_PARAM_CHANGE
, size
);
4115 return AVERROR(ENOMEM
);
4116 bytestream_put_le32(&data
, flags
);
4118 bytestream_put_le32(&data
, channels
);
4120 bytestream_put_le64(&data
, channel_layout
);
4122 bytestream_put_le32(&data
, sample_rate
);
4123 if (width
|| height
) {
4124 bytestream_put_le32(&data
, width
);
4125 bytestream_put_le32(&data
, height
);
4130 AVRational
av_guess_sample_aspect_ratio(AVFormatContext
*format
, AVStream
*stream
, AVFrame
*frame
)
4132 AVRational undef
= {0, 1};
4133 AVRational stream_sample_aspect_ratio
= stream
? stream
->sample_aspect_ratio
: undef
;
4134 AVRational codec_sample_aspect_ratio
= stream
&& stream
->codec
? stream
->codec
->sample_aspect_ratio
: undef
;
4135 AVRational frame_sample_aspect_ratio
= frame
? frame
->sample_aspect_ratio
: codec_sample_aspect_ratio
;
4137 av_reduce(&stream_sample_aspect_ratio
.num
, &stream_sample_aspect_ratio
.den
,
4138 stream_sample_aspect_ratio
.num
, stream_sample_aspect_ratio
.den
, INT_MAX
);
4139 if (stream_sample_aspect_ratio
.num
<= 0 || stream_sample_aspect_ratio
.den
<= 0)
4140 stream_sample_aspect_ratio
= undef
;
4142 av_reduce(&frame_sample_aspect_ratio
.num
, &frame_sample_aspect_ratio
.den
,
4143 frame_sample_aspect_ratio
.num
, frame_sample_aspect_ratio
.den
, INT_MAX
);
4144 if (frame_sample_aspect_ratio
.num
<= 0 || frame_sample_aspect_ratio
.den
<= 0)
4145 frame_sample_aspect_ratio
= undef
;
4147 if (stream_sample_aspect_ratio
.num
)
4148 return stream_sample_aspect_ratio
;
4150 return frame_sample_aspect_ratio
;
4153 AVRational
av_guess_frame_rate(AVFormatContext
*format
, AVStream
*st
, AVFrame
*frame
)
4155 AVRational fr
= st
->r_frame_rate
;
4156 AVRational codec_fr
= st
->codec
->framerate
;
4157 AVRational avg_fr
= st
->avg_frame_rate
;
4159 if (avg_fr
.num
> 0 && avg_fr
.den
> 0 && fr
.num
> 0 && fr
.den
> 0 &&
4160 av_q2d(avg_fr
) < 70 && av_q2d(fr
) > 210) {
4165 if (st
->codec
->ticks_per_frame
> 1) {
4166 if ( codec_fr
.num
> 0 && codec_fr
.den
> 0 && av_q2d(codec_fr
) < av_q2d(fr
)*0.7
4167 && fabs(1.0 - av_q2d(av_div_q(avg_fr
, fr
))) > 0.1)
4174 int avformat_match_stream_specifier(AVFormatContext
*s
, AVStream
*st
,
4177 if (*spec
<= '9' && *spec
>= '0') /* opt:index */
4178 return strtol(spec
, NULL
, 0) == st
->index
;
4179 else if (*spec
== 'v' || *spec
== 'a' || *spec
== 's' || *spec
== 'd' ||
4180 *spec
== 't') { /* opt:[vasdt] */
4181 enum AVMediaType type
;
4184 case 'v': type
= AVMEDIA_TYPE_VIDEO
; break;
4185 case 'a': type
= AVMEDIA_TYPE_AUDIO
; break;
4186 case 's': type
= AVMEDIA_TYPE_SUBTITLE
; break;
4187 case 'd': type
= AVMEDIA_TYPE_DATA
; break;
4188 case 't': type
= AVMEDIA_TYPE_ATTACHMENT
; break;
4189 default: av_assert0(0);
4191 if (type
!= st
->codec
->codec_type
)
4193 if (*spec
++ == ':') { /* possibly followed by :index */
4194 int i
, index
= strtol(spec
, NULL
, 0);
4195 for (i
= 0; i
< s
->nb_streams
; i
++)
4196 if (s
->streams
[i
]->codec
->codec_type
== type
&& index
-- == 0)
4197 return i
== st
->index
;
4201 } else if (*spec
== 'p' && *(spec
+ 1) == ':') {
4205 prog_id
= strtol(spec
, &endptr
, 0);
4206 for (i
= 0; i
< s
->nb_programs
; i
++) {
4207 if (s
->programs
[i
]->id
!= prog_id
)
4210 if (*endptr
++ == ':') {
4211 int stream_idx
= strtol(endptr
, NULL
, 0);
4212 return stream_idx
>= 0 &&
4213 stream_idx
< s
->programs
[i
]->nb_stream_indexes
&&
4214 st
->index
== s
->programs
[i
]->stream_index
[stream_idx
];
4217 for (j
= 0; j
< s
->programs
[i
]->nb_stream_indexes
; j
++)
4218 if (st
->index
== s
->programs
[i
]->stream_index
[j
])
4222 } else if (*spec
== '#' ||
4223 (*spec
== 'i' && *(spec
+ 1) == ':')) {
4226 spec
+= 1 + (*spec
== 'i');
4227 stream_id
= strtol(spec
, &endptr
, 0);
4229 return stream_id
== st
->id
;
4230 } else if (*spec
== 'm' && *(spec
+ 1) == ':') {
4231 AVDictionaryEntry
*tag
;
4236 val
= strchr(spec
, ':');
4238 key
= val
? av_strndup(spec
, val
- spec
) : av_strdup(spec
);
4240 return AVERROR(ENOMEM
);
4242 tag
= av_dict_get(st
->metadata
, key
, NULL
, 0);
4244 if (!val
|| !strcmp(tag
->value
, val
+ 1))
4253 } else if (!*spec
) /* empty specifier, matches everything */
4256 av_log(s
, AV_LOG_ERROR
, "Invalid stream specifier: %s.\n", spec
);
4257 return AVERROR(EINVAL
);
4260 int ff_generate_avci_extradata(AVStream
*st
)
4262 static const uint8_t avci100_1080p_extradata
[] = {
4264 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4265 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4266 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4267 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4268 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4269 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4270 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4271 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4272 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4274 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4277 static const uint8_t avci100_1080i_extradata
[] = {
4279 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4280 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4281 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4282 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4283 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4284 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4285 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4286 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4287 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4288 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4289 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4291 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4294 static const uint8_t avci50_1080p_extradata
[] = {
4296 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4297 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4298 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4299 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4300 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4301 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4302 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4303 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4304 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4306 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4309 static const uint8_t avci50_1080i_extradata
[] = {
4311 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4312 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4313 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4314 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4315 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4316 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4317 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4318 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4319 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4320 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4321 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4323 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4326 static const uint8_t avci100_720p_extradata
[] = {
4328 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4329 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4330 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4331 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4332 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4333 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4334 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4335 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4336 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4337 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4339 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4342 static const uint8_t avci50_720p_extradata
[] = {
4344 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4345 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4346 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4347 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4348 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4349 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4350 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4351 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4352 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4354 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4358 const uint8_t *data
= NULL
;
4361 if (st
->codec
->width
== 1920) {
4362 if (st
->codec
->field_order
== AV_FIELD_PROGRESSIVE
) {
4363 data
= avci100_1080p_extradata
;
4364 size
= sizeof(avci100_1080p_extradata
);
4366 data
= avci100_1080i_extradata
;
4367 size
= sizeof(avci100_1080i_extradata
);
4369 } else if (st
->codec
->width
== 1440) {
4370 if (st
->codec
->field_order
== AV_FIELD_PROGRESSIVE
) {
4371 data
= avci50_1080p_extradata
;
4372 size
= sizeof(avci50_1080p_extradata
);
4374 data
= avci50_1080i_extradata
;
4375 size
= sizeof(avci50_1080i_extradata
);
4377 } else if (st
->codec
->width
== 1280) {
4378 data
= avci100_720p_extradata
;
4379 size
= sizeof(avci100_720p_extradata
);
4380 } else if (st
->codec
->width
== 960) {
4381 data
= avci50_720p_extradata
;
4382 size
= sizeof(avci50_720p_extradata
);
4388 av_freep(&st
->codec
->extradata
);
4389 if (ff_alloc_extradata(st
->codec
, size
))
4390 return AVERROR(ENOMEM
);
4391 memcpy(st
->codec
->extradata
, data
, size
);
4396 uint8_t *av_stream_get_side_data(AVStream
*st
, enum AVPacketSideDataType type
,
4401 for (i
= 0; i
< st
->nb_side_data
; i
++) {
4402 if (st
->side_data
[i
].type
== type
) {
4404 *size
= st
->side_data
[i
].size
;
4405 return st
->side_data
[i
].data
;