1 files changed, 75 insertions, 0 deletions

diff --git a/apps/codecs/libtremor/oggmalloc.c b/apps/codecs/libtremor/oggmalloc.c
new file mode 100644
index 0000000000..b11eaa54f5
--- /dev/null
+++ b/apps/codecs/libtremor/oggmalloc.c
@@ -0,0 +1,75 @@
+#include <os_types.h>
+
+static unsigned char *mallocbuf;
+static size_t bufsize, tmp_ptr, mem_ptr;
+
+void ogg_malloc_init(void)
+{
+    mallocbuf = ci->codec_get_buffer(&bufsize);
+    tmp_ptr = bufsize & ~3;
+    mem_ptr = 0;
+}
+
+void *ogg_malloc(size_t size)
+{
+    void* x;
+
+    size = (size + 3) & ~3;
+
+    if (mem_ptr + size > tmp_ptr)
+        return NULL;
+    
+    x = &mallocbuf[mem_ptr];
+    mem_ptr += size; /* Keep memory 32-bit aligned */
+
+    return x;
+}
+
+void *ogg_tmpmalloc(size_t size)
+{
+    size = (size + 3) & ~3;
+
+    if (mem_ptr + size > tmp_ptr)
+        return NULL;
+    
+    tmp_ptr -= size;
+    return &mallocbuf[tmp_ptr];
+}
+
+void *ogg_calloc(size_t nmemb, size_t size)
+{
+    void *x;
+    x = ogg_malloc(nmemb * size);
+    if (x == NULL)
+        return NULL;
+    ci->memset(x, 0, nmemb * size);
+    return x;
+}
+
+void *ogg_tmpcalloc(size_t nmemb, size_t size)
+{
+    void *x;
+    x = ogg_tmpmalloc(nmemb * size);
+    if (x == NULL)
+        return NULL;
+    ci->memset(x, 0, nmemb * size);
+    return x;
+}
+
+void *ogg_realloc(void *ptr, size_t size)
+{
+    void *x;
+    (void)ptr;
+    x = ogg_malloc(size);
+    return x;
+}
+
+long ogg_tmpmalloc_pos(void)
+{
+    return tmp_ptr;
+}
+
+void ogg_tmpmalloc_free(long pos)
+{
+    tmp_ptr = pos;
+}