upload android base code part4

android/hardware/qcom/display/msm8909/libgralloc/alloc_controller.h

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above
+ *     copyright notice, this list of conditions and the following
+ *     disclaimer in the documentation and/or other materials provided
+ *     with the distribution.
+ *   * Neither the name of The Linux Foundation nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef GRALLOC_ALLOCCONTROLLER_H
+#define GRALLOC_ALLOCCONTROLLER_H
+
+namespace gralloc {
+
+struct alloc_data;
+class IMemAlloc;
+class IonAlloc;
+
+class IAllocController {
+
+    public:
+    /* Allocate using a suitable method
+     * Returns the type of buffer allocated
+     */
+    virtual int allocate(alloc_data& data, int usage) = 0;
+
+    virtual IMemAlloc* getAllocator(int flags) = 0;
+
+    virtual ~IAllocController() {};
+
+    static IAllocController* getInstance(void);
+
+    private:
+    static IAllocController* sController;
+
+};
+
+class IonController : public IAllocController {
+
+    public:
+    virtual int allocate(alloc_data& data, int usage);
+
+    virtual IMemAlloc* getAllocator(int flags);
+
+    IonController();
+
+    private:
+    IonAlloc* mIonAlloc;
+    void allocateIonMem();
+
+};
+} //end namespace gralloc
+#endif // GRALLOC_ALLOCCONTROLLER_H