movenc: Grow the frag_info array in chunks

Previously it was grown one element at a time, which leads to
excessive reallocations.

Bug-Id: 525
Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 2 insertions, 0 deletions

diff --git a/libavformat/movenc.h b/libavformat/movenc.h
index 103b918361..d15d69ccaa 100644
--- a/libavformat/movenc.h
+++ b/libavformat/movenc.h
@@ -26,6 +26,7 @@
 
 #include "avformat.h"
 
+#define MOV_FRAG_INFO_ALLOC_INCREMENT 64
 #define MOV_INDEX_CLUSTER_SIZE 1024
 #define MOV_TIMESCALE 1000
 
@@ -121,6 +122,7 @@ typedef struct MOVTrack {
 
     int         nb_frag_info;
     MOVFragmentInfo *frag_info;
+    unsigned    frag_info_capacity;
 
     struct {
         int64_t struct_offset;