commit 16362f7dc755d9a2cfb8df06db74a16fcc97e495
Author: Nathan Froyd <froydnj@mozilla.com>
Date:   Wed Mar 5 10:58:29 2014 -0500

    Bug 677653 - part 1 - indirect libogg memory allocations through variables

diff --git a/include/ogg/ogg.h b/include/ogg/ogg.h
index cea4ebe..cebe38e 100644
--- a/include/ogg/ogg.h
+++ b/include/ogg/ogg.h
@@ -202,6 +202,10 @@ extern int      ogg_page_packets(const ogg_page *og);
 
 extern void     ogg_packet_clear(ogg_packet *op);
 
+extern void     ogg_set_mem_functions(ogg_malloc_function_type *malloc_func,
+                                      ogg_calloc_function_type *calloc_func,
+                                      ogg_realloc_function_type *realloc_func,
+                                      ogg_free_function_type *free_func);
 
 #ifdef __cplusplus
 }
diff --git a/include/ogg/os_types.h b/include/ogg/os_types.h
index 2c75a20..83ed732 100644
--- a/include/ogg/os_types.h
+++ b/include/ogg/os_types.h
@@ -17,12 +17,33 @@
 #ifndef _OS_TYPES_H
 #define _OS_TYPES_H
 
-/* make it easy on the folks that want to compile the libs with a
-   different malloc than stdlib */
-#define _ogg_malloc  malloc
-#define _ogg_calloc  calloc
-#define _ogg_realloc realloc
-#define _ogg_free    free
+#include <stddef.h>
+
+/* We indirect mallocs through settable-at-runtime functions to accommodate
+   memory reporting in the browser. */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void* (ogg_malloc_function_type)(size_t);
+typedef void* (ogg_calloc_function_type)(size_t, size_t);
+typedef void* (ogg_realloc_function_type)(void*, size_t);
+typedef void (ogg_free_function_type)(void*);
+
+extern ogg_malloc_function_type *ogg_malloc_func;
+extern ogg_calloc_function_type *ogg_calloc_func;
+extern ogg_realloc_function_type *ogg_realloc_func;
+extern ogg_free_function_type *ogg_free_func;
+
+#ifdef __cplusplus
+}
+#endif
+
+#define _ogg_malloc ogg_malloc_func
+#define _ogg_calloc ogg_calloc_func
+#define _ogg_realloc ogg_realloc_func
+#define _ogg_free ogg_free_func
 
 #if defined(_WIN32) 
 
diff --git a/src/ogg_alloc.c b/src/ogg_alloc.c
new file mode 100644
index 0000000..4238d7b
--- /dev/null
+++ b/src/ogg_alloc.c
@@ -0,0 +1,31 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ *********************************************************************/
+
+#include <stdlib.h>
+#include "ogg/os_types.h"
+
+ogg_malloc_function_type *ogg_malloc_func = malloc;
+ogg_calloc_function_type *ogg_calloc_func = calloc;
+ogg_realloc_function_type *ogg_realloc_func = realloc;
+ogg_free_function_type *ogg_free_func = free;
+
+void
+ogg_set_mem_functions(ogg_malloc_function_type *malloc_func,
+                      ogg_calloc_function_type *calloc_func,
+                      ogg_realloc_function_type *realloc_func,
+                      ogg_free_function_type *free_func)
+{
+  ogg_malloc_func = malloc_func;
+  ogg_calloc_func = calloc_func;
+  ogg_realloc_func = realloc_func;
+  ogg_free_func = free_func;
+}