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lavu: Refactor side data wiping

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And make sure the nb_side_data field is reset as well.

Based on an initial patch from wm4 <nfxjfg@googlemail.com>.

CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2014-12-15 20:38:00 +01:00 committed by Vittorio Giovara
parent effa7d2a6a
commit 5d839778b9
1 changed files with 14 additions and 8 deletions
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22
libavutil/frame.c
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@ -54,6 +54,18 @@ static void free_side_data(AVFrameSideData **ptr_sd)
av_freep(ptr_sd);
}
static void wipe_side_data(AVFrame *frame)
{
int i;
for (i = 0; i < frame->nb_side_data; i++) {
free_side_data(&frame->side_data[i]);
}
frame->nb_side_data = 0;
av_freep(&frame->side_data);
}
AVFrame *av_frame_alloc(void)
{
AVFrame *frame = av_mallocz(sizeof(*frame));
@ -284,10 +296,7 @@ void av_frame_unref(AVFrame *frame)
{
int i;
for (i = 0; i < frame->nb_side_data; i++) {
free_side_data(&frame->side_data[i]);
}
av_freep(&frame->side_data);
wipe_side_data(frame);
for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
av_buffer_unref(&frame->buf[i]);
@ -398,10 +407,7 @@ int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
AVFrameSideData *sd_dst = av_frame_new_side_data(dst, sd_src->type,
sd_src->size);
if (!sd_dst) {
for (i = 0; i < dst->nb_side_data; i++) {
free_side_data(&dst->side_data[i]);
}
av_freep(&dst->side_data);
wipe_side_data(dst);
return AVERROR(ENOMEM);
}
memcpy(sd_dst->data, sd_src->data, sd_src->size);