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utils: Add av_stream_add_side_data()

Functionally similar to av_packet_add_side_data(). Allows the use of an
already allocated buffer as stream side data.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
tags/n3.4
James Almer Vittorio Giovara 8 years ago
parent
commit
79ff9935ae
4 changed files with 46 additions and 11 deletions
  1. +3
    -0
      doc/APIchanges
  2. +15
    -0
      libavformat/avformat.h
  3. +27
    -10
      libavformat/utils.c
  4. +1
    -1
      libavformat/version.h

+ 3
- 0
doc/APIchanges View File

@@ -13,6 +13,9 @@ libavutil: 2015-08-28

API changes, most recent first:

2016-xx-xx - xxxxxxx - lavf 57.10.0 - avformat.h
Add av_stream_add_side_data().

2016-xx-xx - xxxxxxx - lavu 55.28.0 - pixfmt.h
Add AV_PIX_FMT_GRAY12(LE/BE).



+ 15
- 0
libavformat/avformat.h View File

@@ -1399,6 +1399,21 @@ const AVClass *avformat_get_class(void);
*/
AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c);

/**
* Wrap an existing array as stream side data.
*
* @param st stream
* @param type side information type
* @param data the side data array. It must be allocated with the av_malloc()
* family of functions. The ownership of the data is transferred to
* st.
* @param size side information size
* @return zero on success, a negative AVERROR code on failure. On failure,
* the stream is unchanged and the data remains owned by the caller.
*/
int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
uint8_t *data, size_t size);

/**
* Allocate new information from stream.
*


+ 27
- 10
libavformat/utils.c View File

@@ -3388,15 +3388,11 @@ uint8_t *av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type,
return NULL;
}

uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
int size)
int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
uint8_t *data, size_t size)
{
AVPacketSideData *sd, *tmp;
int i;
uint8_t *data = av_malloc(size);

if (!data)
return NULL;

for (i = 0; i < st->nb_side_data; i++) {
sd = &st->side_data[i];
@@ -3405,14 +3401,16 @@ uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
av_freep(&sd->data);
sd->data = data;
sd->size = size;
return sd->data;
return 0;
}
}

tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
if ((unsigned) st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
return AVERROR(ERANGE);

tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
if (!tmp) {
av_freep(&data);
return NULL;
return AVERROR(ENOMEM);
}

st->side_data = tmp;
@@ -3422,6 +3420,25 @@ uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
sd->type = type;
sd->data = data;
sd->size = size;

return 0;
}

uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
int size)
{
int ret;
uint8_t *data = av_malloc(size);

if (!data)
return NULL;

ret = av_stream_add_side_data(st, type, data, size);
if (ret < 0) {
av_freep(&data);
return NULL;
}

return data;
}



+ 1
- 1
libavformat/version.h View File

@@ -30,7 +30,7 @@
#include "libavutil/version.h"

#define LIBAVFORMAT_VERSION_MAJOR 57
#define LIBAVFORMAT_VERSION_MINOR 9
#define LIBAVFORMAT_VERSION_MINOR 10
#define LIBAVFORMAT_VERSION_MICRO 0

#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \


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