You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
4.8 KiB
128 lines
4.8 KiB
/*
|
|
* Copyright 2019 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <android-base/thread_annotations.h>
|
|
#include <binder/IBinder.h>
|
|
#include <renderengine/ExternalTexture.h>
|
|
#include <ui/GraphicBuffer.h>
|
|
#include <ui/Rect.h>
|
|
#include <utils/StrongPointer.h>
|
|
|
|
#include <chrono>
|
|
#include <condition_variable>
|
|
#include <mutex>
|
|
#include <thread>
|
|
#include <unordered_map>
|
|
|
|
#include "Scheduler/OneShotTimer.h"
|
|
|
|
namespace android {
|
|
|
|
class IRegionSamplingListener;
|
|
class Layer;
|
|
class Scheduler;
|
|
class SurfaceFlinger;
|
|
struct SamplingOffsetCallback;
|
|
|
|
float sampleArea(const uint32_t* data, int32_t width, int32_t height, int32_t stride,
|
|
uint32_t orientation, const Rect& area);
|
|
|
|
class RegionSamplingThread : public IBinder::DeathRecipient {
|
|
public:
|
|
struct TimingTunables {
|
|
// debug.sf.sampling_duration_ns
|
|
// When asynchronously collecting sample, the duration, at which the sampling should start
|
|
// before a vsync
|
|
std::chrono::nanoseconds mSamplingDuration;
|
|
// debug.sf.sampling_period_ns
|
|
// This is the maximum amount of time the luma recieving client
|
|
// should have to wait for a new luma value after a frame is updated. The inverse of this is
|
|
// roughly the sampling rate. Sampling system rounds up sub-vsync sampling period to vsync
|
|
// period.
|
|
std::chrono::nanoseconds mSamplingPeriod;
|
|
// debug.sf.sampling_timer_timeout_ns
|
|
// This is the interval at which the luma sampling system will check that the luma clients
|
|
// have up to date information. It defaults to the mSamplingPeriod.
|
|
std::chrono::nanoseconds mSamplingTimerTimeout;
|
|
};
|
|
struct EnvironmentTimingTunables : TimingTunables {
|
|
EnvironmentTimingTunables();
|
|
};
|
|
explicit RegionSamplingThread(SurfaceFlinger& flinger, const TimingTunables& tunables);
|
|
explicit RegionSamplingThread(SurfaceFlinger& flinger);
|
|
|
|
~RegionSamplingThread();
|
|
|
|
// Add a listener to receive luma notifications. The luma reported via listener will
|
|
// report the median luma for the layers under the stopLayerHandle, in the samplingArea region.
|
|
void addListener(const Rect& samplingArea, const wp<Layer>& stopLayer,
|
|
const sp<IRegionSamplingListener>& listener);
|
|
// Remove the listener to stop receiving median luma notifications.
|
|
void removeListener(const sp<IRegionSamplingListener>& listener);
|
|
|
|
// Notifies sampling engine that composition is done and new content is
|
|
// available, and the deadline for the sampling work on the main thread to
|
|
// be completed without eating the budget of another frame.
|
|
void onCompositionComplete(
|
|
std::optional<std::chrono::steady_clock::time_point> samplingDeadline);
|
|
|
|
private:
|
|
struct Descriptor {
|
|
Rect area = Rect::EMPTY_RECT;
|
|
wp<Layer> stopLayer;
|
|
sp<IRegionSamplingListener> listener;
|
|
};
|
|
|
|
struct WpHash {
|
|
size_t operator()(const wp<IBinder>& p) const {
|
|
return std::hash<IBinder*>()(p.unsafe_get());
|
|
}
|
|
};
|
|
std::vector<float> sampleBuffer(
|
|
const sp<GraphicBuffer>& buffer, const Point& leftTop,
|
|
const std::vector<RegionSamplingThread::Descriptor>& descriptors, uint32_t orientation);
|
|
|
|
void doSample(std::optional<std::chrono::steady_clock::time_point> samplingDeadline);
|
|
void binderDied(const wp<IBinder>& who) override;
|
|
void checkForStaleLuma();
|
|
|
|
void captureSample();
|
|
void threadMain();
|
|
|
|
SurfaceFlinger& mFlinger;
|
|
const TimingTunables mTunables;
|
|
scheduler::OneShotTimer mIdleTimer;
|
|
|
|
std::thread mThread;
|
|
|
|
std::mutex mThreadControlMutex;
|
|
std::condition_variable_any mCondition;
|
|
bool mRunning GUARDED_BY(mThreadControlMutex) = true;
|
|
bool mSampleRequested GUARDED_BY(mThreadControlMutex) = false;
|
|
std::optional<std::chrono::steady_clock::time_point> mSampleRequestTime
|
|
GUARDED_BY(mThreadControlMutex);
|
|
std::chrono::steady_clock::time_point mLastSampleTime GUARDED_BY(mThreadControlMutex);
|
|
|
|
std::mutex mSamplingMutex;
|
|
std::unordered_map<wp<IBinder>, Descriptor, WpHash> mDescriptors GUARDED_BY(mSamplingMutex);
|
|
std::shared_ptr<renderengine::ExternalTexture> mCachedBuffer GUARDED_BY(mSamplingMutex) =
|
|
nullptr;
|
|
};
|
|
|
|
} // namespace android
|