| #pragma once |
| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #include "common/vsoc/shm/base.h" |
| #include "common/vsoc/shm/lock.h" |
| |
| // Memory layout for screen region |
| |
| namespace vsoc { |
| namespace layout { |
| |
| namespace screen { |
| struct TimeSpec { |
| static constexpr size_t layout_size = 16; |
| |
| int64_t ts_sec; |
| uint32_t ts_nsec; |
| // Host and guest compilers are giving the structure different sizes without |
| // this field. |
| uint32_t reserved; |
| }; |
| ASSERT_SHM_COMPATIBLE(TimeSpec); |
| |
| struct CompositionStats { |
| static constexpr size_t layout_size = 4 + 2 * 2 + 5 * TimeSpec::layout_size; |
| |
| uint32_t num_prepare_calls; |
| uint16_t num_layers; |
| uint16_t num_hwcomposited_layers; |
| TimeSpec last_vsync; |
| TimeSpec prepare_start; |
| TimeSpec prepare_end; |
| TimeSpec set_start; |
| TimeSpec set_end; |
| }; |
| ASSERT_SHM_COMPATIBLE(CompositionStats); |
| |
| struct ScreenLayout : public RegionLayout { |
| static constexpr size_t layout_size = 24 + CompositionStats::layout_size; |
| static const char* region_name; |
| // Display properties |
| uint32_t x_res; |
| uint32_t y_res; |
| uint16_t dpi; |
| uint16_t refresh_rate_hz; |
| |
| // Protects access to the frame offset, sequential number and stats. |
| // See the region implementation for more details. |
| SpinLock bcast_lock; |
| // The frame sequential number |
| std::atomic<uint32_t> seq_num; |
| // The index of the buffer containing the current frame. |
| int32_t buffer_index; |
| CompositionStats stats; |
| uint8_t buffer[0]; |
| }; |
| ASSERT_SHM_COMPATIBLE(ScreenLayout); |
| |
| } // namespace screen |
| |
| } // namespace layout |
| } // namespace vsoc |