1 files changed, 89 insertions, 0 deletions
diff --git a/merrifield/include/BufferManager.h b/merrifield/include/BufferManager.h
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+/*
+// Copyright (c) 2014 Intel Corporation 
+//
+// 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 BUFFERMANAGER_H_
+#define BUFFERMANAGER_H_
+
+#include <Dump.h>
+#include <DataBuffer.h>
+#include <BufferMapper.h>
+#include <BufferCache.h>
+#include <utils/Mutex.h>
+
+namespace android {
+namespace intel {
+
+// Gralloc Buffer Manager
+class BufferManager {
+public:
+    BufferManager();
+    virtual ~BufferManager();
+
+    bool initCheck() const;
+    virtual bool initialize();
+    virtual void deinitialize();
+
+    // dump interface
+    void dump(Dump& d);
+
+    // lockDataBuffer and unlockDataBuffer must be used in serial
+    // nested calling of them will cause a deadlock
+    DataBuffer* lockDataBuffer(buffer_handle_t handle);
+    void unlockDataBuffer(DataBuffer *buffer);
+
+    // get and put interfaces are deprecated
+    // use lockDataBuffer and unlockDataBuffer instead
+    DataBuffer* get(buffer_handle_t handle);
+    void put(DataBuffer *buffer);
+
+    // map/unmap a data buffer into/from display memory
+    BufferMapper* map(DataBuffer& buffer);
+    void unmap(BufferMapper *mapper);
+
+    // frame buffer management
+    //return 0 if allocation fails
+    virtual buffer_handle_t allocFrameBuffer(int width, int height, int *stride);
+    virtual void freeFrameBuffer(buffer_handle_t fbHandle);
+
+    buffer_handle_t allocGrallocBuffer(uint32_t width, uint32_t height, uint32_t format, uint32_t usage);
+    void freeGrallocBuffer(buffer_handle_t handle);
+    virtual bool blit(buffer_handle_t srcHandle, buffer_handle_t destHandle,
+                      const crop_t& destRect, bool filter, bool async) = 0;
+protected:
+    virtual DataBuffer* createDataBuffer(gralloc_module_t *module,
+                                             buffer_handle_t handle) = 0;
+    virtual BufferMapper* createBufferMapper(gralloc_module_t *module,
+                                                 DataBuffer& buffer) = 0;
+
+    gralloc_module_t *mGrallocModule;
+private:
+    enum {
+        // make the buffer pool large enough
+        DEFAULT_BUFFER_POOL_SIZE = 128,
+    };
+
+    alloc_device_t *mAllocDev;
+    KeyedVector<buffer_handle_t, BufferMapper*> mFrameBuffers;
+    BufferCache *mBufferPool;
+    DataBuffer *mDataBuffer;
+    Mutex mDataBufferLock;
+    Mutex mLock;
+    bool mInitialized;
+};
+
+} // namespace intel
+} // namespace android
+
+#endif /* BUFFERMANAGER_H_ */