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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 <memory>
     24 
     25 #include <ui/PixelFormat.h>
     26 #include <utils/Singleton.h>
     27 
     28 
     29 // Needed by code that still uses the GRALLOC_USAGE_* constants.
     30 // when/if we get rid of gralloc, we should provide aliases or fix call sites.
     31 #include <hardware/gralloc.h>
     32 
     33 
     34 namespace android {
     35 
     36 // ---------------------------------------------------------------------------
     37 
     38 namespace Gralloc2 {
     39 class Mapper;
     40 }
     41 
     42 class Rect;
     43 
     44 class GraphicBufferMapper : public Singleton<GraphicBufferMapper>
     45 {
     46 public:
     47     static void preloadHal();
     48     static inline GraphicBufferMapper& get() { return getInstance(); }
     49 
     50     // The imported outHandle must be freed with freeBuffer when no longer
     51     // needed. rawHandle is owned by the caller.
     52     status_t importBuffer(buffer_handle_t rawHandle,
     53             uint32_t width, uint32_t height, uint32_t layerCount,
     54             PixelFormat format, uint64_t usage, uint32_t stride,
     55             buffer_handle_t* outHandle);
     56 
     57     status_t freeBuffer(buffer_handle_t handle);
     58 
     59     void getTransportSize(buffer_handle_t handle,
     60             uint32_t* outTransportNumFds, uint32_t* outTransportNumInts);
     61 
     62     status_t lock(buffer_handle_t handle,
     63             uint32_t usage, const Rect& bounds, void** vaddr);
     64 
     65     status_t lockYCbCr(buffer_handle_t handle,
     66             uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr);
     67 
     68     status_t unlock(buffer_handle_t handle);
     69 
     70     status_t lockAsync(buffer_handle_t handle,
     71             uint32_t usage, const Rect& bounds, void** vaddr, int fenceFd);
     72 
     73     status_t lockAsync(buffer_handle_t handle,
     74             uint64_t producerUsage, uint64_t consumerUsage, const Rect& bounds,
     75             void** vaddr, int fenceFd);
     76 
     77     status_t lockAsyncYCbCr(buffer_handle_t handle,
     78             uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr,
     79             int fenceFd);
     80 
     81     status_t unlockAsync(buffer_handle_t handle, int *fenceFd);
     82 
     83     const Gralloc2::Mapper& getGrallocMapper() const
     84     {
     85         return *mMapper;
     86     }
     87 
     88 private:
     89     friend class Singleton<GraphicBufferMapper>;
     90 
     91     GraphicBufferMapper();
     92 
     93     const std::unique_ptr<const Gralloc2::Mapper> mMapper;
     94 };
     95 
     96 // ---------------------------------------------------------------------------
     97 
     98 }; // namespace android
     99 
    100 #endif // ANDROID_UI_BUFFER_MAPPER_H
    101 
    102