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lavf: add an AVStream field for exporting stream-global side data

This commit is contained in:
Anton Khirnov 2014-02-19 12:10:32 +01:00
parent 0e2c3ee9a3
commit 25b3258656
4 changed files with 34 additions and 2 deletions

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@ -13,6 +13,10 @@ libavutil: 2013-12-xx
API changes, most recent first:
2014-02-xx - xxxxxxx - lavf 55.13.0 - avformat.h
Add AVStream.side_data and AVStream.nb_side_data for exporting stream-global
side data (e.g. replaygain tags, video rotation)
2014-02-xx - xxxxxxx - lavc 55.35.0 - avcodec.h
Give the name AVPacketSideData to the previously anonymous struct used for
AVPacket.side_data.

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@ -755,6 +755,28 @@ typedef struct AVStream {
*/
AVPacket attached_pic;
/**
* An array of side data that applies to the whole stream (i.e. the
* container does not allow it to change between packets).
*
* There may be no overlap between the side data in this array and side data
* in the packets. I.e. a given side data is either exported by the muxer
* (demuxing) / set by the caller (muxing) in this array, then it never
* appears in the packets, or the side data is exported / sent through
* the packets (always in the first packet where the value becomes known or
* changes), then it does not appear in this array.
*
* - demuxing: Set by libavformat when the stream is created.
* - muxing: May be set by the caller before avformat_write_header().
*
* Freed by libavformat in avformat_free_context().
*/
AVPacketSideData *side_data;
/**
* The number of elements in the AVStream.side_data array.
*/
int nb_side_data;
/*****************************************************************
* All fields below this line are not part of the public API. They
* may not be used outside of libavformat and can be changed and

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@ -2595,7 +2595,7 @@ int av_read_pause(AVFormatContext *s)
void avformat_free_context(AVFormatContext *s)
{
int i;
int i, j;
AVStream *st;
av_opt_free(s);
@ -2605,6 +2605,12 @@ void avformat_free_context(AVFormatContext *s)
for (i = 0; i < s->nb_streams; i++) {
/* free all data in a stream component */
st = s->streams[i];
for (j = 0; j < st->nb_side_data; j++)
av_freep(&st->side_data[j].data);
av_freep(&st->side_data);
st->nb_side_data = 0;
if (st->parser) {
av_parser_close(st->parser);
}

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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFORMAT_VERSION_MAJOR 55
#define LIBAVFORMAT_VERSION_MINOR 12
#define LIBAVFORMAT_VERSION_MINOR 13
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \