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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_UI_BUFFER_MAPPER_H
     18 #define ANDROID_UI_BUFFER_MAPPER_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 #include <utils/Singleton.h>
     24 
     25 #include <hardware/gralloc.h>
     26 
     27 
     28 struct gralloc_module_t;
     29 
     30 namespace android {
     31 
     32 // ---------------------------------------------------------------------------
     33 
     34 class Rect;
     35 
     36 class GraphicBufferMapper : public Singleton<GraphicBufferMapper>
     37 {
     38 public:
     39     static inline GraphicBufferMapper& get() { return getInstance(); }
     40 
     41     status_t registerBuffer(buffer_handle_t handle);
     42 
     43     status_t unregisterBuffer(buffer_handle_t handle);
     44 
     45     status_t lock(buffer_handle_t handle,
     46             int usage, const Rect& bounds, void** vaddr);
     47 
     48     status_t lockYCbCr(buffer_handle_t handle,
     49             int usage, const Rect& bounds, android_ycbcr *ycbcr);
     50 
     51     status_t unlock(buffer_handle_t handle);
     52 
     53     // dumps information about the mapping of this handle
     54     void dump(buffer_handle_t handle);
     55 
     56 private:
     57     friend class Singleton<GraphicBufferMapper>;
     58     GraphicBufferMapper();
     59     gralloc_module_t const *mAllocMod;
     60 };
     61 
     62 // ---------------------------------------------------------------------------
     63 
     64 }; // namespace android
     65 
     66 #endif // ANDROID_UI_BUFFER_MAPPER_H
     67 
     68