1 #pragma once 2 /* 3 * Copyright (C) 2017 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #include "common/vsoc/shm/base.h" 19 #include "common/vsoc/shm/graphics.h" 20 #include "common/vsoc/shm/lock.h" 21 22 // Memory layout for the gralloc manager region. 23 24 namespace vsoc { 25 namespace layout { 26 27 namespace gralloc { 28 29 struct BufferEntry { 30 static constexpr size_t layout_size = 31 7 * 4 + PixelFormatRegister::layout_size; 32 33 uint32_t owned_by; 34 uint32_t buffer_begin; 35 uint32_t buffer_end; 36 37 PixelFormatRegister pixel_format; 38 uint32_t stride; 39 uint32_t width; 40 uint32_t height; 41 42 // A size of 28 is causing different layouts when GrallocManagerLayout is 43 // compiled in host and guest sides 44 uint32_t padding; 45 buffer_sizeBufferEntry46 uint32_t buffer_size() { 47 return buffer_end - buffer_begin; 48 } 49 }; 50 ASSERT_SHM_COMPATIBLE(BufferEntry); 51 52 struct GrallocBufferLayout : public RegionLayout { 53 static constexpr size_t layout_size = 1; 54 static const char* region_name; 55 }; 56 ASSERT_SHM_COMPATIBLE(GrallocBufferLayout); 57 58 struct GrallocManagerLayout : public RegionLayout { 59 static constexpr size_t layout_size = 60 8 + GuestLock::layout_size + BufferEntry::layout_size; 61 static const char* region_name; 62 typedef GrallocBufferLayout ManagedRegion; 63 64 uint32_t allocated_buffer_memory; 65 uint32_t buffer_count; 66 // Make sure this isn't the first field 67 GuestLock new_buffer_lock; 68 // Needs to be last field 69 BufferEntry buffers_table[1]; 70 }; 71 ASSERT_SHM_COMPATIBLE(GrallocManagerLayout); 72 73 } // namespace gralloc 74 } // namespace layout 75 } // namespace vsoc 76