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avio: add a destructor for AVIOContext

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Before this commit, AVIOContext is to be freed with a plain av_free(),
which prevents us from adding any deeper structure to it.

(cherry picked from commit 99684f3ae752fc8bfb44a2dd1482f8d7a3d8536d)
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Anton Khirnov 2017-08-27 13:26:58 -03:00 committed by James Almer
parent 837580f458
commit b12e4d3bb8
4 changed files with 26 additions and 4 deletions
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3
doc/APIchanges
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@ -15,6 +15,9 @@ libavutil: 2015-08-28
API changes, most recent first:
2017-09-01 - xxxxxxx - lavf 57.80.100 / 57.11.0 - avio.h
Add avio_context_free(). From now on it must be used for freeing AVIOContext.
2017-08-08 - xxxxxxx - lavu 55.74.100 - pixdesc.h
Add AV_PIX_FMT_FLAG_FLOAT pixel format flag.

8
libavformat/avio.h
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@ -467,6 +467,14 @@ AVIOContext *avio_alloc_context(
int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
int64_t (*seek)(void *opaque, int64_t offset, int whence));
/**
* Free the supplied IO context and everything associated with it.
*
* @param s Double pointer to the IO context. This function will write NULL
* into s.
*/
void avio_context_free(AVIOContext **s);
void avio_w8(AVIOContext *s, int b);
void avio_write(AVIOContext *s, const unsigned char *buf, int size);
void avio_wl64(AVIOContext *s, uint64_t val);

17
libavformat/aviobuf.c
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@ -143,6 +143,11 @@ AVIOContext *avio_alloc_context(
return s;
}
void avio_context_free(AVIOContext **ps)
{
av_freep(ps);
}
static void writeout(AVIOContext *s, const uint8_t *data, int len)
{
if (!s->error) {
@ -1123,7 +1128,9 @@ int avio_close(AVIOContext *s)
else
av_log(s, AV_LOG_DEBUG, "Statistics: %"PRId64" bytes read, %d seeks\n", s->bytes_read, s->seek_count);
av_opt_free(s);
av_free(s);
avio_context_free(&s);
return ffurl_close(h);
}
@ -1356,7 +1363,9 @@ int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
*pbuffer = d->buffer;
size = d->size;
av_free(d);
av_free(s);
avio_context_free(&s);
return size - padding;
}
@ -1399,6 +1408,8 @@ int ffio_close_null_buf(AVIOContext *s)
size = d->size;
av_free(d);
av_free(s);
avio_context_free(&s);
return size;
}

2
libavformat/version.h
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@ -32,7 +32,7 @@
// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 57
#define LIBAVFORMAT_VERSION_MINOR 79
#define LIBAVFORMAT_VERSION_MINOR 80
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \