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236 lines
8.3 KiB
236 lines
8.3 KiB
/*
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* Copyright 2020 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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#undef LOG_TAG
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#define LOG_TAG "LayerHistory"
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
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#include "LayerHistory.h"
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#include <android-base/stringprintf.h>
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#include <cutils/properties.h>
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#include <utils/Log.h>
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#include <utils/Timers.h>
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#include <utils/Trace.h>
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#include <algorithm>
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#include <cmath>
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#include <string>
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#include <utility>
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#include "../Layer.h"
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#include "LayerInfo.h"
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#include "SchedulerUtils.h"
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namespace android::scheduler {
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namespace {
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bool isLayerActive(const LayerInfo& info, nsecs_t threshold) {
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// Layers with an explicit vote are always kept active
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if (info.getSetFrameRateVote().rate.isValid()) {
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return true;
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}
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return info.isVisible() && info.getLastUpdatedTime() >= threshold;
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}
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bool traceEnabled() {
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return property_get_bool("debug.sf.layer_history_trace", false);
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}
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bool useFrameRatePriority() {
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char value[PROPERTY_VALUE_MAX];
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property_get("debug.sf.use_frame_rate_priority", value, "1");
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return atoi(value);
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}
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void trace(const LayerInfo& info, LayerHistory::LayerVoteType type, int fps) {
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const auto traceType = [&](LayerHistory::LayerVoteType checkedType, int value) {
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ATRACE_INT(info.getTraceTag(checkedType), type == checkedType ? value : 0);
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};
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traceType(LayerHistory::LayerVoteType::NoVote, 1);
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traceType(LayerHistory::LayerVoteType::Heuristic, fps);
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traceType(LayerHistory::LayerVoteType::ExplicitDefault, fps);
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traceType(LayerHistory::LayerVoteType::ExplicitExactOrMultiple, fps);
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traceType(LayerHistory::LayerVoteType::ExplicitExact, fps);
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traceType(LayerHistory::LayerVoteType::Min, 1);
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traceType(LayerHistory::LayerVoteType::Max, 1);
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ALOGD("%s: %s @ %d Hz", __FUNCTION__, info.getName().c_str(), fps);
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}
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} // namespace
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LayerHistory::LayerHistory(const RefreshRateConfigs& refreshRateConfigs)
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: mTraceEnabled(traceEnabled()), mUseFrameRatePriority(useFrameRatePriority()) {
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LayerInfo::setTraceEnabled(mTraceEnabled);
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LayerInfo::setRefreshRateConfigs(refreshRateConfigs);
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}
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LayerHistory::~LayerHistory() = default;
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void LayerHistory::registerLayer(Layer* layer, LayerVoteType type) {
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std::lock_guard lock(mLock);
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for (const auto& info : mLayerInfos) {
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LOG_ALWAYS_FATAL_IF(info.first == layer, "%s already registered", layer->getName().c_str());
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}
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auto info = std::make_unique<LayerInfo>(layer->getName(), layer->getOwnerUid(), type);
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mLayerInfos.emplace_back(layer, std::move(info));
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}
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void LayerHistory::deregisterLayer(Layer* layer) {
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std::lock_guard lock(mLock);
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const auto it = std::find_if(mLayerInfos.begin(), mLayerInfos.end(),
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[layer](const auto& pair) { return pair.first == layer; });
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LOG_ALWAYS_FATAL_IF(it == mLayerInfos.end(), "%s: unknown layer %p", __FUNCTION__, layer);
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const size_t i = static_cast<size_t>(it - mLayerInfos.begin());
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if (i < mActiveLayersEnd) {
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mActiveLayersEnd--;
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}
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const size_t last = mLayerInfos.size() - 1;
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std::swap(mLayerInfos[i], mLayerInfos[last]);
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mLayerInfos.erase(mLayerInfos.begin() + static_cast<long>(last));
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}
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void LayerHistory::record(Layer* layer, nsecs_t presentTime, nsecs_t now,
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LayerUpdateType updateType) {
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std::lock_guard lock(mLock);
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const auto it = std::find_if(mLayerInfos.begin(), mLayerInfos.end(),
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[layer](const auto& pair) { return pair.first == layer; });
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if (it == mLayerInfos.end()) {
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// Offscreen layer
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ALOGV("LayerHistory::record: %s not registered", layer->getName().c_str());
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return;
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}
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const auto& info = it->second;
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const auto layerProps = LayerInfo::LayerProps{
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.visible = layer->isVisible(),
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.bounds = layer->getBounds(),
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.transform = layer->getTransform(),
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.setFrameRateVote = layer->getFrameRateForLayerTree(),
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.frameRateSelectionPriority = layer->getFrameRateSelectionPriority(),
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};
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info->setLastPresentTime(presentTime, now, updateType, mModeChangePending, layerProps);
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// Activate layer if inactive.
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if (const auto end = activeLayers().end(); it >= end) {
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std::iter_swap(it, end);
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mActiveLayersEnd++;
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}
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}
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LayerHistory::Summary LayerHistory::summarize(nsecs_t now) {
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LayerHistory::Summary summary;
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std::lock_guard lock(mLock);
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partitionLayers(now);
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for (const auto& [layer, info] : activeLayers()) {
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const auto frameRateSelectionPriority = info->getFrameRateSelectionPriority();
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const auto layerFocused = Layer::isLayerFocusedBasedOnPriority(frameRateSelectionPriority);
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ALOGV("%s has priority: %d %s focused", info->getName().c_str(), frameRateSelectionPriority,
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layerFocused ? "" : "not");
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const auto vote = info->getRefreshRateVote(now);
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// Skip NoVote layer as those don't have any requirements
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if (vote.type == LayerHistory::LayerVoteType::NoVote) {
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continue;
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}
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// Compute the layer's position on the screen
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const Rect bounds = Rect(info->getBounds());
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const ui::Transform transform = info->getTransform();
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constexpr bool roundOutwards = true;
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Rect transformed = transform.transform(bounds, roundOutwards);
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const float layerArea = transformed.getWidth() * transformed.getHeight();
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float weight = mDisplayArea ? layerArea / mDisplayArea : 0.0f;
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summary.push_back({info->getName(), info->getOwnerUid(), vote.type, vote.fps,
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vote.seamlessness, weight, layerFocused});
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if (CC_UNLIKELY(mTraceEnabled)) {
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trace(*info, vote.type, vote.fps.getIntValue());
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}
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}
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return summary;
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}
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void LayerHistory::partitionLayers(nsecs_t now) {
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const nsecs_t threshold = getActiveLayerThreshold(now);
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// Collect expired and inactive layers after active layers.
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size_t i = 0;
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while (i < mActiveLayersEnd) {
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auto& [layerUnsafe, info] = mLayerInfos[i];
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if (isLayerActive(*info, threshold)) {
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i++;
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// Set layer vote if set
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const auto frameRate = info->getSetFrameRateVote();
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const auto voteType = [&]() {
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switch (frameRate.type) {
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case Layer::FrameRateCompatibility::Default:
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return LayerVoteType::ExplicitDefault;
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case Layer::FrameRateCompatibility::ExactOrMultiple:
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return LayerVoteType::ExplicitExactOrMultiple;
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case Layer::FrameRateCompatibility::NoVote:
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return LayerVoteType::NoVote;
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case Layer::FrameRateCompatibility::Exact:
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return LayerVoteType::ExplicitExact;
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}
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}();
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if (frameRate.rate.isValid() || voteType == LayerVoteType::NoVote) {
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const auto type = info->isVisible() ? voteType : LayerVoteType::NoVote;
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info->setLayerVote({type, frameRate.rate, frameRate.seamlessness});
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} else {
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info->resetLayerVote();
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}
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continue;
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}
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if (CC_UNLIKELY(mTraceEnabled)) {
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trace(*info, LayerHistory::LayerVoteType::NoVote, 0);
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}
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info->onLayerInactive(now);
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std::swap(mLayerInfos[i], mLayerInfos[--mActiveLayersEnd]);
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}
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}
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void LayerHistory::clear() {
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std::lock_guard lock(mLock);
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for (const auto& [layer, info] : activeLayers()) {
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info->clearHistory(systemTime());
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}
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}
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std::string LayerHistory::dump() const {
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std::lock_guard lock(mLock);
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return base::StringPrintf("LayerHistory{size=%zu, active=%zu}", mLayerInfos.size(),
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mActiveLayersEnd);
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}
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} // namespace android::scheduler
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