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avcodec/exif: Avoid allocation for small buffer 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2021-01-23 15:44:50 +01:00
parent 458acb61fa
commit f15477169e
1 changed files with 6 additions and 13 deletions
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19
libavcodec/exif.c
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@ -95,22 +95,15 @@ static int exif_decode_tag(void *logctx, GetByteContext *gbytes, int le,
ret = ff_exif_decode_ifd(logctx, gbytes, le, depth + 1, metadata);
} else {
const char *name = exif_get_tag_name(id);
char *use_name = (char*) name;
if (!use_name) {
use_name = av_malloc(7);
if (!use_name) {
return AVERROR(ENOMEM);
}
snprintf(use_name, 7, "0x%04X", id);
}
ret = exif_add_metadata(logctx, count, type, use_name, NULL,
gbytes, le, metadata);
char buf[7];
if (!name) {
av_freep(&use_name);
name = buf;
snprintf(buf, sizeof(buf), "0x%04X", id);
}
ret = exif_add_metadata(logctx, count, type, name, NULL,
gbytes, le, metadata);
}
bytestream2_seek(gbytes, cur_pos, SEEK_SET);