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movenc: Increase the cluster array allocation by doubling

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The previous allocation increment of 16384 meant that the cluster
array was allocated for 0.6 MB initially, which is a bit excessive
for cases with fragmentation where only a fraction of that ever
actually is used.

Therefore, start off at a much smaller value, and increase by
doubling (to avoid reallocating too often when writing long
non-fragmented mp4 files).

Bug-Id: 525
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Andrey Semashev 2013-06-03 13:32:48 +03:00 committed by Martin Storsjö
parent 3b4feac1ec
commit ab1189766a
2 changed files with 2 additions and 2 deletions
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2
libavformat/movenc.c
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@ -2870,7 +2870,7 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
}
if (trk->entry >= trk->cluster_capacity) {
unsigned new_capacity = trk->entry + MOV_INDEX_CLUSTER_SIZE;
unsigned new_capacity = 2*(trk->entry + MOV_INDEX_CLUSTER_SIZE);
if (av_reallocp_array(&trk->cluster, new_capacity,
sizeof(*trk->cluster)))
return AVERROR(ENOMEM);

2
libavformat/movenc.h
View File

@ -26,7 +26,7 @@
#include "avformat.h"
#define MOV_INDEX_CLUSTER_SIZE 16384
#define MOV_INDEX_CLUSTER_SIZE 1024
#define MOV_TIMESCALE 1000
#define RTP_MAX_PACKET_SIZE 1450