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avformat: add AVFMT_FLAG_FASTSEEK, use it for mp3

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
wm4 2015-04-22 12:24:41 +02:00 committed by Michael Niedermayer
parent d02d04a18f
commit 748d4816d9
6 changed files with 10 additions and 2 deletions
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4
doc/APIchanges
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@ -15,6 +15,10 @@ libavutil: 2014-08-09
API changes, most recent first:
2015-xx-xx - xxxxxxx - lavf 56.xx.xxx - avformat.h
Add AVFMT_FLAG_FAST_SEEK flag. Some formats (initially mp3) use it to enable
fast, but inaccurate seeking.
2015-xx-xx - xxxxxxx - lavu 54.12.0
Add AV_LOG_TRACE for extremely verbose debugging.

2
doc/formats.texi
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@ -37,6 +37,8 @@ Possible values:
@table @samp
@item ignidx
Ignore index.
@item fastseek
Enable fast, but inaccurate seeks for some formats.
@item genpts
Generate PTS.
@item nofillin

1
libavformat/avformat.h
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@ -1391,6 +1391,7 @@ typedef struct AVFormatContext {
#define AVFMT_FLAG_SORT_DTS 0x10000 ///< try to interleave outputted packets by dts (using this flag can slow demuxing down)
#define AVFMT_FLAG_PRIV_OPT 0x20000 ///< Enable use of private options by delaying codec open (this could be made default once all code is converted)
#define AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 ///< Don't merge side data but keep it separate.
#define AVFMT_FLAG_FAST_SEEK 0x80000 ///< Enable fast, but inaccurate seeks for some formats
/**
* @deprecated deprecated in favor of probesize2

2
libavformat/mp3dec.c
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@ -337,7 +337,7 @@ static int mp3_read_header(AVFormatContext *s)
int i;
if (mp3->usetoc < 0)
mp3->usetoc = 2;
mp3->usetoc = (s->flags & AVFMT_FLAG_FAST_SEEK) ? 0 : 2;
st = avformat_new_stream(s, NULL);
if (!st)

1
libavformat/options_table.h
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@ -49,6 +49,7 @@ static const AVOption avformat_options[] = {
{"discardcorrupt", "discard corrupted frames", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_DISCARD_CORRUPT }, INT_MIN, INT_MAX, D, "fflags"},
{"sortdts", "try to interleave outputted packets by dts", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_SORT_DTS }, INT_MIN, INT_MAX, D, "fflags"},
{"keepside", "don't merge side data", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_KEEP_SIDE_DATA }, INT_MIN, INT_MAX, D, "fflags"},
{"fastseek", "fast but inaccurate seeks", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_FAST_SEEK }, INT_MIN, INT_MAX, D, "fflags"},
{"latm", "enable RTP MP4A-LATM payload", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_MP4A_LATM }, INT_MIN, INT_MAX, E, "fflags"},
{"nobuffer", "reduce the latency introduced by optional buffering", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_NOBUFFER }, 0, INT_MAX, D, "fflags"},
{"seek2any", "allow seeking to non-keyframes on demuxer level when supported", OFFSET(seek2any), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, D},

2
libavformat/version.h
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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFORMAT_VERSION_MAJOR 56
#define LIBAVFORMAT_VERSION_MINOR 30
#define LIBAVFORMAT_VERSION_MINOR 31
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \