[rk_malloc]: add malloc function and test case on window

unit test passed

git-svn-id: https://10.10.10.66:8443/svn/MediaProcessPlatform/trunk/mpp@27 6e48237b-75ef-9749-8fc9-41990f28c85a

osal/rk_malloc.cpp

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010 Rockchip Electronics S.LSI Co. LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "rk_type.h"
+#include "rk_log.h"
+#include "rk_malloc.h"
+
+#include "os_malloc.h"
+
+// default memory align size is set to 64
+static size_t rk_mpp_memalign = 64;
+
+void rk_mpp_set_memalign(size_t size)
+{
+    /* determine align size is power of 2 */
+    if (size && !(size & (size - 1)))
+        rk_mpp_memalign = size;
+    else
+        rk_log("set memalign to %d failed\n", size);
+}
+
+void *rk_mpp_malloc(size_t size)
+{
+    void *ptr;
+    if (0 == os_malloc(&ptr, rk_mpp_memalign, size))
+        return ptr;
+    else
+        return NULL;
+}
+
+void rk_mpp_free(void *ptr)
+{
+    os_free(ptr);
+}
+