[FFmpeg-cvslog] lavu: define FF_MEMORY_POISON and use it

[Stefano Sabatini]

ffmpeg | branch: master | Stefano Sabatini <stefasab at gmail.com> | Sun May 12 13:37:33 2013 +0200| [84be80698227366d970e045001e4b59e4f99f0a1] | committer: Stefano Sabatini

lavu: define FF_MEMORY_POISON and use it

Allow single-place definition of constant used to fill poisoned memory.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=84be80698227366d970e045001e4b59e4f99f0a1
---

 libavutil/buffer.c   |    2 +-
 libavutil/internal.h |    2 ++
 libavutil/mem.c      |    2 +-
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavutil/buffer.c b/libavutil/buffer.c
index a5fc8d7..e9bf54b 100644
--- a/libavutil/buffer.c
+++ b/libavutil/buffer.c
@@ -288,7 +288,7 @@ static void pool_release_buffer(void *opaque, uint8_t *data)
     AVBufferPool *pool = buf->pool;
 
     if(CONFIG_MEMORY_POISONING)
-        memset(buf->data, 0x2a, pool->size);
+        memset(buf->data, FF_MEMORY_POISON, pool->size);
 
     add_to_pool(buf);
     if (!avpriv_atomic_int_add_and_fetch(&pool->refcount, -1))
diff --git a/libavutil/internal.h b/libavutil/internal.h
index 76018a8..c5835fb 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -66,6 +66,8 @@
 #    define INT_BIT (CHAR_BIT * sizeof(int))
 #endif
 
+#define FF_MEMORY_POISON 0x2a
+
 // Some broken preprocessors need a second expansion
 // to be forced to tokenize __VA_ARGS__
 #define E1(x) x
diff --git a/libavutil/mem.c b/libavutil/mem.c
index 03bf2c8..9b22609 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -133,7 +133,7 @@ void *av_malloc(size_t size)
     }
 #if CONFIG_MEMORY_POISONING
     if (ptr)
-        memset(ptr, 0x2a, size);
+        memset(ptr, FF_MEMORY_POISON, size);
 #endif
     return ptr;
 }