We find the last essence container much faster if we go through the partitions
backwards...
Signed-off-by: Marton Balint <c...@passwd.hu>
---
libavformat/mxfdec.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index c3892a1037..18c038c3f6 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1545,10 +1545,7 @@ static int mxf_absolute_bodysid_offset(MXFContext *mxf,
int body_sid, int64_t of
*/
static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
{
- int x;
- int64_t ret = 0;
-
- for (x = 0; x < mxf->partitions_count; x++) {
+ for (int x = mxf->partitions_count - 1; x >= 0; x--) {
MXFPartition *p = &mxf->partitions[x];
if (p->body_sid != body_sid)
@@ -1557,10 +1554,10 @@ static int64_t mxf_essence_container_end(MXFContext
*mxf, int body_sid)
if (!p->essence_length)
return 0;
- ret = p->essence_offset + p->essence_length;
+ return p->essence_offset + p->essence_length;
}
- return ret;
+ return 0;
}
/* EditUnit -> absolute offset */
--
2.16.4
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