90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_DRM_ATOMIC_STATE_MANAGER_H_
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#define ANDROID_DRM_ATOMIC_STATE_MANAGER_H_
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#include <pthread.h>
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#include <functional>
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#include <memory>
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#include <optional>
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#include <sstream>
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#include <tuple>
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#include "compositor/DrmKmsPlan.h"
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#include "drm/DrmPlane.h"
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#include "drm/ResourceManager.h"
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#include "drm/VSyncWorker.h"
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#include "drmhwcomposer.h"
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namespace android {
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struct AtomicCommitArgs {
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/* inputs. All fields are optional, but at least one has to be specified */
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bool test_only = false;
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std::optional<DrmMode> display_mode;
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std::optional<bool> active;
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std::shared_ptr<DrmKmsPlan> composition;
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/* out */
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UniqueFd out_fence;
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/* helpers */
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auto HasInputs() -> bool {
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return display_mode || active || composition;
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}
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};
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class DrmAtomicStateManager {
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public:
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explicit DrmAtomicStateManager(DrmDisplayPipeline *pipe) : pipe_(pipe){};
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DrmAtomicStateManager(const DrmAtomicStateManager &) = delete;
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~DrmAtomicStateManager() = default;
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auto ExecuteAtomicCommit(AtomicCommitArgs &args) -> int;
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auto ActivateDisplayUsingDPMS() -> int;
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private:
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auto CommitFrame(AtomicCommitArgs &args) -> int;
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struct KmsState {
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/* Required to cleanup unused planes */
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std::vector<std::shared_ptr<BindingOwner<DrmPlane>>> used_planes;
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/* We have to hold a reference to framebuffer while displaying it ,
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* otherwise picture will blink */
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std::vector<std::shared_ptr<DrmFbIdHandle>> used_framebuffers;
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DrmModeUserPropertyBlobUnique mode_blob;
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/* To avoid setting the inactive state twice, which will fail the commit */
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bool crtc_active_state{};
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} active_frame_state_;
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auto NewFrameState() -> KmsState {
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return (KmsState){
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.used_planes = active_frame_state_.used_planes,
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.used_framebuffers = active_frame_state_.used_framebuffers,
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.crtc_active_state = active_frame_state_.crtc_active_state,
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};
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}
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DrmDisplayPipeline *const pipe_;
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};
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} // namespace android
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#endif // ANDROID_DRM_DISPLAY_COMPOSITOR_H_
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