1 /* 2 * Copyright 2016 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_GRALLOC2_H 18 #define ANDROID_UI_GRALLOC2_H 19 20 #include <string> 21 22 #include <android/hardware/graphics/allocator/2.0/IAllocator.h> 23 #include <android/hardware/graphics/mapper/2.0/IMapper.h> 24 #include <system/window.h> 25 #include <utils/StrongPointer.h> 26 27 namespace android { 28 29 namespace Gralloc2 { 30 31 using hardware::graphics::allocator::V2_0::IAllocator; 32 using hardware::graphics::common::V1_0::BufferUsage; 33 using hardware::graphics::common::V1_0::PixelFormat; 34 using hardware::graphics::mapper::V2_0::BufferDescriptor; 35 using hardware::graphics::mapper::V2_0::Error; 36 using hardware::graphics::mapper::V2_0::IMapper; 37 using hardware::graphics::mapper::V2_0::YCbCrLayout; 38 39 // A wrapper to IMapper 40 class Mapper { 41 public: 42 Mapper(); 43 44 Error createDescriptor( 45 const IMapper::BufferDescriptorInfo& descriptorInfo, 46 BufferDescriptor* outDescriptor) const; 47 48 // Import a buffer that is from another HAL, another process, or is 49 // cloned. 50 // 51 // The returned handle must be freed with freeBuffer. 52 Error importBuffer(const hardware::hidl_handle& rawHandle, 53 buffer_handle_t* outBufferHandle) const; 54 55 void freeBuffer(buffer_handle_t bufferHandle) const; 56 57 // The ownership of acquireFence is always transferred to the callee, even 58 // on errors. 59 Error lock(buffer_handle_t bufferHandle, uint64_t usage, 60 const IMapper::Rect& accessRegion, 61 int acquireFence, void** outData) const; 62 63 // The ownership of acquireFence is always transferred to the callee, even 64 // on errors. 65 Error lock(buffer_handle_t bufferHandle, uint64_t usage, 66 const IMapper::Rect& accessRegion, 67 int acquireFence, YCbCrLayout* outLayout) const; 68 69 // unlock returns a fence sync object (or -1) and the fence sync object is 70 // owned by the caller 71 int unlock(buffer_handle_t bufferHandle) const; 72 73 private: 74 sp<IMapper> mMapper; 75 }; 76 77 // A wrapper to IAllocator 78 class Allocator { 79 public: 80 // An allocator relies on a mapper, and that mapper must be alive at all 81 // time. 82 Allocator(const Mapper& mapper); 83 84 std::string dumpDebugInfo() const; 85 86 /* 87 * The returned buffers are already imported and must not be imported 88 * again. outBufferHandles must point to a space that can contain at 89 * least "count" buffer_handle_t. 90 */ 91 Error allocate(BufferDescriptor descriptor, uint32_t count, 92 uint32_t* outStride, buffer_handle_t* outBufferHandles) const; 93 allocate(BufferDescriptor descriptor,uint32_t * outStride,buffer_handle_t * outBufferHandle)94 Error allocate(BufferDescriptor descriptor, 95 uint32_t* outStride, buffer_handle_t* outBufferHandle) const 96 { 97 return allocate(descriptor, 1, outStride, outBufferHandle); 98 } 99 allocate(const IMapper::BufferDescriptorInfo & descriptorInfo,uint32_t count,uint32_t * outStride,buffer_handle_t * outBufferHandles)100 Error allocate(const IMapper::BufferDescriptorInfo& descriptorInfo, uint32_t count, 101 uint32_t* outStride, buffer_handle_t* outBufferHandles) const 102 { 103 BufferDescriptor descriptor; 104 Error error = mMapper.createDescriptor(descriptorInfo, &descriptor); 105 if (error == Error::NONE) { 106 error = allocate(descriptor, count, outStride, outBufferHandles); 107 } 108 return error; 109 } 110 allocate(const IMapper::BufferDescriptorInfo & descriptorInfo,uint32_t * outStride,buffer_handle_t * outBufferHandle)111 Error allocate(const IMapper::BufferDescriptorInfo& descriptorInfo, 112 uint32_t* outStride, buffer_handle_t* outBufferHandle) const 113 { 114 return allocate(descriptorInfo, 1, outStride, outBufferHandle); 115 } 116 117 private: 118 const Mapper& mMapper; 119 sp<IAllocator> mAllocator; 120 }; 121 122 } // namespace Gralloc2 123 124 } // namespace android 125 126 #endif // ANDROID_UI_GRALLOC2_H 127