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+/*
+**
+** Copyright 2009, The Android Open Source Project
+**
+** 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.
+*/
+
+#ifndef ANDROID_BUFFER_ALLOCATOR_H
+#define ANDROID_BUFFER_ALLOCATOR_H
+
+#include <stdint.h>
+
+#include <cutils/native_handle.h>
+
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+#include <utils/Singleton.h>
+
+#include <ui/PixelFormat.h>
+
+#include <hardware/gralloc.h>
+
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class String8;
+
+class GraphicBufferAllocator : public Singleton<GraphicBufferAllocator>
+{
+public:
+ enum {
+ USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER,
+ USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY,
+ USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN,
+ USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK,
+
+ USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER,
+ USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
+ USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
+ USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
+
+ USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
+
+ USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
+ USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
+ USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
+ USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK
+ };
+
+ static inline GraphicBufferAllocator& get() { return getInstance(); }
+
+
+ status_t alloc(uint32_t w, uint32_t h, PixelFormat format, int usage,
+ buffer_handle_t* handle, int32_t* stride);
+
+ status_t free(buffer_handle_t handle);
+
+ void dump(String8& res) const;
+
+private:
+ struct alloc_rec_t {
+ uint32_t w;
+ uint32_t h;
+ uint32_t s;
+ PixelFormat format;
+ uint32_t usage;
+ size_t size;
+ };
+
+ static Mutex sLock;
+ static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList;
+
+ friend class Singleton<GraphicBufferAllocator>;
+ GraphicBufferAllocator();
+ ~GraphicBufferAllocator();
+
+ alloc_device_t *mAllocDev;
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_BUFFER_ALLOCATOR_H