Sync Speex to SVN. Disable stereo compatibility hack since we don't needed it and it produced warnings. Remove unneeded math.h

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15613 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 6 insertions, 1 deletions

diff --git a/apps/codecs/libspeex/os_support.h b/apps/codecs/libspeex/os_support.h
index 92262f1942..7e4b25b3d9 100644
--- a/apps/codecs/libspeex/os_support.h
+++ b/apps/codecs/libspeex/os_support.h
@@ -41,10 +41,14 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-/** Speex wrapper for calloc. To do your own dynamic allocation, all you need to do is replace this function, speex_realloc and speex_free */
+/** Speex wrapper for calloc. To do your own dynamic allocation, all you need to do is replace this function, speex_realloc and speex_free 
+    NOTE: speex_alloc needs to CLEAR THE MEMORY */
 #ifndef OVERRIDE_SPEEX_ALLOC
 static inline void *speex_alloc (int size)
 {
+   /* WARNING: this is not equivalent to malloc(). If you want to use malloc() 
+      or your own allocator, YOU NEED TO CLEAR THE MEMORY ALLOCATED. Otherwise
+      you will experience strange bugs */
    return calloc(size,1);
 }
 #endif
@@ -53,6 +57,7 @@ static inline void *speex_alloc (int size)
 #ifndef OVERRIDE_SPEEX_ALLOC_SCRATCH
 static inline void *speex_alloc_scratch (int size)
 {
+   /* Scratch space doesn't need to be cleared */
    return calloc(size,1);
 }
 #endif