aboutsummaryrefslogtreecommitdiffstats
path: root/libavutil/mem.c
diff options
context:
space:
mode:
authorMichael Niedermayer <michaelni@gmx.at>2013-11-14 15:04:04 +0100
committerMichael Niedermayer <michaelni@gmx.at>2013-11-14 15:04:04 +0100
commit7c888ae746da0d9f6a11bab9758c01d641b49d7b (patch)
tree22862c9f615cb2e636feec9ffd1d5e2a675295ed /libavutil/mem.c
parent2925571278bf09702564dfedd5e7731a112dd1f0 (diff)
parentcce3e0a49f0dd030262c28d9c53de0bd2fd909c4 (diff)
downloadffmpeg-7c888ae746da0d9f6a11bab9758c01d641b49d7b.tar.gz
Merge commit 'cce3e0a49f0dd030262c28d9c53de0bd2fd909c4'
* commit 'cce3e0a49f0dd030262c28d9c53de0bd2fd909c4': Move av_fast_{m,re}alloc from lavc to lavu. Conflicts: libavcodec/avcodec.h libavcodec/utils.c libavutil/mem.c libavutil/version.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/mem.c')
-rw-r--r--libavutil/mem.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/libavutil/mem.c b/libavutil/mem.c
index 5aad97aa93..10b0137a7e 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -38,6 +38,7 @@
#include "avassert.h"
#include "avutil.h"
+#include "common.h"
#include "intreadwrite.h"
#include "mem.h"
@@ -463,3 +464,41 @@ void av_memcpy_backptr(uint8_t *dst, int back, int cnt)
}
}
+void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
+{
+ if (min_size < *size)
+ return ptr;
+
+ min_size = FFMAX(17 * min_size / 16 + 32, min_size);
+
+ ptr = av_realloc(ptr, min_size);
+ /* we could set this to the unmodified min_size but this is safer
+ * if the user lost the ptr and uses NULL now
+ */
+ if (!ptr)
+ min_size = 0;
+
+ *size = min_size;
+
+ return ptr;
+}
+
+static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
+{
+ void **p = ptr;
+ if (min_size < *size)
+ return 0;
+ min_size = FFMAX(17 * min_size / 16 + 32, min_size);
+ av_free(*p);
+ *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
+ if (!*p)
+ min_size = 0;
+ *size = min_size;
+ return 1;
+}
+
+void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
+{
+ ff_fast_malloc(ptr, size, min_size, 0);
+}
+