854a9186df
This is needed for ARC-R container targets using arc-cros-gralloc. Meanwhile, bump -std=c++14 to -std=c++17 for std::optional and others. Bug: b/433317686 Test: chromium CI + android CI Change-Id: Id9ed5f27f6788ca63d0bdb9566c54b3cd4030e16
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* Copyright 2022 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef CROSGRALLOC4METADATA_H
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#define CROSGRALLOC4METADATA_H
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#include <optional>
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#include <type_traits>
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#ifndef HAS_NO_AIDL_METADATA
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#include <aidl/android/hardware/graphics/common/BlendMode.h>
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#include <aidl/android/hardware/graphics/common/Cta861_3.h>
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#include <aidl/android/hardware/graphics/common/Dataspace.h>
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#include <aidl/android/hardware/graphics/common/Smpte2086.h>
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#endif // HAS_NO_AIDL_METADATA
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#include "cros_gralloc_helpers.h"
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// Simple replacement for std::optional which is not guarenteed to be memory layout
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// stable across ABIs.
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template <typename T> struct cros_buffer_optional {
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enum class state : uint32_t { VACANT, OCCUPIED };
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cros_buffer_optional() = default;
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cros_buffer_optional(std::optional<T> v) : occupancy(v ? state::OCCUPIED : state::VACANT)
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{
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if (v) {
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value = *v;
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}
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}
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std::optional<T> to_std_optional() const
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{
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return occupancy == state::VACANT ? std::nullopt : std::make_optional(value);
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}
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state occupancy = state::VACANT;
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T value;
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};
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/*
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* The metadata for cros_gralloc_buffer-s that should reside in a shared memory region
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* instead of directly in cros_gralloc_handle-s.
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*
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* Any metadata that is mutable must be stored in this shared memory region as
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* cros_gralloc_handle-s can not be tracked and updated across processes.
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*/
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struct cros_gralloc_buffer_metadata {
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/*
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* Name is stored in the shared memory metadata to simplify cros_gralloc_handle
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* creation. This allows us to keep handles small while avoiding variable sized
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* handles.
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*/
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char name[CROS_GRALLOC_BUFFER_METADATA_MAX_NAME_SIZE];
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#ifndef HAS_NO_AIDL_METADATA
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aidl::android::hardware::graphics::common::BlendMode blend_mode;
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aidl::android::hardware::graphics::common::Dataspace dataspace;
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cros_buffer_optional<aidl::android::hardware::graphics::common::Cta861_3> cta861_3;
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cros_buffer_optional<aidl::android::hardware::graphics::common::Smpte2086> smpte2086;
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#endif // HAS_NO_AIDL_METADATA
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};
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static_assert(std::is_standard_layout_v<cros_gralloc_buffer_metadata>);
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static_assert(std::is_trivially_copyable_v<cros_gralloc_buffer_metadata>);
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#endif
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