From a34aee4646284eae67c1317d7baf82c2b3012aba Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sun, 13 Jan 2013 15:57:56 +0100
Subject: [PATCH] swr: limit buffer size for silence injection
This reduces memory usage for unreasonable large silence injections
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswresample/swresample.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index 6f1c41bc5c3..19423024ba3 100644
--- a/libswresample/swresample.c
+++ b/libswresample/swresample.c
@@ -818,6 +818,13 @@ int swr_inject_silence(struct SwrContext *s, int count){
if(count <= 0)
return 0;
+#define MAX_SILENCE_STEP 16384
+ while (count > MAX_SILENCE_STEP) {
+ if ((ret = swr_inject_silence(s, MAX_SILENCE_STEP)) < 0)
+ return ret;
+ count -= MAX_SILENCE_STEP;
+ }
+
if((ret=swri_realloc_audio(&s->silence, count))<0)
return ret;
--
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