136 lines
3.4 KiB
C++
136 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2015 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.
|
|
*/
|
|
|
|
#ifndef ANDROID_DRM_ATOMIC_STATE_MANAGER_H_
|
|
#define ANDROID_DRM_ATOMIC_STATE_MANAGER_H_
|
|
|
|
#include <pthread.h>
|
|
|
|
#include <functional>
|
|
#include <memory>
|
|
#include <optional>
|
|
#include <sstream>
|
|
#include <tuple>
|
|
|
|
#include "compositor/DrmKmsPlan.h"
|
|
#include "compositor/LayerData.h"
|
|
#include "drm/DrmPlane.h"
|
|
#include "drm/ResourceManager.h"
|
|
#include "drm/VSyncWorker.h"
|
|
|
|
namespace android {
|
|
|
|
struct AtomicCommitArgs {
|
|
/* inputs. All fields are optional, but at least one has to be specified */
|
|
bool test_only = false;
|
|
std::optional<DrmMode> display_mode;
|
|
std::optional<bool> active;
|
|
std::shared_ptr<DrmKmsPlan> composition;
|
|
|
|
/* out */
|
|
UniqueFd out_fence;
|
|
|
|
/* helpers */
|
|
auto HasInputs() -> bool {
|
|
return display_mode || active || composition;
|
|
}
|
|
};
|
|
|
|
class PresentTrackerThread {
|
|
public:
|
|
explicit PresentTrackerThread(DrmAtomicStateManager *st_man);
|
|
|
|
~PresentTrackerThread();
|
|
|
|
void Stop() {
|
|
/* Exit thread by signalling that object is no longer valid */
|
|
st_man_ = nullptr;
|
|
Notify();
|
|
pt_.detach();
|
|
}
|
|
|
|
void Notify() {
|
|
cv_.notify_all();
|
|
}
|
|
|
|
private:
|
|
DrmAtomicStateManager *st_man_{};
|
|
|
|
void PresentTrackerThreadFn();
|
|
|
|
std::condition_variable cv_;
|
|
std::thread pt_;
|
|
std::mutex *mutex_;
|
|
};
|
|
|
|
class DrmAtomicStateManager {
|
|
friend class PresentTrackerThread;
|
|
|
|
public:
|
|
explicit DrmAtomicStateManager(DrmDisplayPipeline *pipe)
|
|
: pipe_(pipe),
|
|
ptt_(std::make_unique<PresentTrackerThread>(this).release()){};
|
|
|
|
DrmAtomicStateManager(const DrmAtomicStateManager &) = delete;
|
|
~DrmAtomicStateManager() {
|
|
ptt_->Stop();
|
|
}
|
|
|
|
auto ExecuteAtomicCommit(AtomicCommitArgs &args) -> int;
|
|
auto ActivateDisplayUsingDPMS() -> int;
|
|
|
|
private:
|
|
auto CommitFrame(AtomicCommitArgs &args) -> int;
|
|
|
|
struct KmsState {
|
|
/* Required to cleanup unused planes */
|
|
std::vector<std::shared_ptr<BindingOwner<DrmPlane>>> used_planes;
|
|
/* We have to hold a reference to framebuffer while displaying it ,
|
|
* otherwise picture will blink */
|
|
std::vector<std::shared_ptr<DrmFbIdHandle>> used_framebuffers;
|
|
|
|
DrmModeUserPropertyBlobUnique mode_blob;
|
|
|
|
int release_fence_pt_index{};
|
|
|
|
/* To avoid setting the inactive state twice, which will fail the commit */
|
|
bool crtc_active_state{};
|
|
} active_frame_state_;
|
|
|
|
auto NewFrameState() -> KmsState {
|
|
auto *prev_frame_state = &active_frame_state_;
|
|
return (KmsState){
|
|
.used_planes = prev_frame_state->used_planes,
|
|
.crtc_active_state = prev_frame_state->crtc_active_state,
|
|
};
|
|
}
|
|
|
|
DrmDisplayPipeline *const pipe_;
|
|
|
|
void CleanupPriorFrameResources();
|
|
|
|
/* Present (swap) tracking */
|
|
PresentTrackerThread *ptt_;
|
|
KmsState staged_frame_state_;
|
|
UniqueFd last_present_fence_;
|
|
int frames_staged_{};
|
|
int frames_tracked_{};
|
|
};
|
|
|
|
} // namespace android
|
|
|
|
#endif // ANDROID_DRM_DISPLAY_COMPOSITOR_H_
|