| /* |
| * 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. |
| */ |
| |
| // #define LOG_NDEBUG 0 |
| #define ATRACE_TAG ATRACE_TAG_GRAPHICS |
| |
| // TODO(b/129481165): remove the #pragma below and fix conversion issues |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wextra" |
| |
| #include <chrono> |
| #include <cmath> |
| #include <deque> |
| #include <map> |
| |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <ftl/enum.h> |
| #include <ftl/fake_guard.h> |
| #include <ftl/match.h> |
| #include <ftl/unit.h> |
| #include <gui/TraceUtils.h> |
| #include <scheduler/FrameRateMode.h> |
| #include <utils/Trace.h> |
| |
| #include "../SurfaceFlingerProperties.h" |
| #include "RefreshRateSelector.h" |
| |
| #undef LOG_TAG |
| #define LOG_TAG "RefreshRateSelector" |
| |
| namespace android::scheduler { |
| namespace { |
| |
| struct RefreshRateScore { |
| FrameRateMode frameRateMode; |
| float overallScore; |
| struct { |
| float modeBelowThreshold; |
| float modeAboveThreshold; |
| } fixedRateBelowThresholdLayersScore; |
| }; |
| |
| constexpr RefreshRateSelector::GlobalSignals kNoSignals; |
| |
| std::string formatLayerInfo(const RefreshRateSelector::LayerRequirement& layer, float weight) { |
| return base::StringPrintf("%s (type=%s, weight=%.2f, seamlessness=%s) %s", layer.name.c_str(), |
| ftl::enum_string(layer.vote).c_str(), weight, |
| ftl::enum_string(layer.seamlessness).c_str(), |
| to_string(layer.desiredRefreshRate).c_str()); |
| } |
| |
| std::vector<Fps> constructKnownFrameRates(const DisplayModes& modes) { |
| std::vector<Fps> knownFrameRates = {24_Hz, 30_Hz, 45_Hz, 60_Hz, 72_Hz}; |
| knownFrameRates.reserve(knownFrameRates.size() + modes.size()); |
| |
| // Add all supported refresh rates. |
| for (const auto& [id, mode] : modes) { |
| knownFrameRates.push_back(mode->getFps()); |
| } |
| |
| // Sort and remove duplicates. |
| std::sort(knownFrameRates.begin(), knownFrameRates.end(), isStrictlyLess); |
| knownFrameRates.erase(std::unique(knownFrameRates.begin(), knownFrameRates.end(), |
| isApproxEqual), |
| knownFrameRates.end()); |
| return knownFrameRates; |
| } |
| |
| std::vector<DisplayModeIterator> sortByRefreshRate(const DisplayModes& modes) { |
| std::vector<DisplayModeIterator> sortedModes; |
| sortedModes.reserve(modes.size()); |
| for (auto it = modes.begin(); it != modes.end(); ++it) { |
| sortedModes.push_back(it); |
| } |
| |
| std::sort(sortedModes.begin(), sortedModes.end(), [](auto it1, auto it2) { |
| const auto& mode1 = it1->second; |
| const auto& mode2 = it2->second; |
| |
| if (mode1->getVsyncPeriod() == mode2->getVsyncPeriod()) { |
| return mode1->getGroup() > mode2->getGroup(); |
| } |
| |
| return mode1->getVsyncPeriod() > mode2->getVsyncPeriod(); |
| }); |
| |
| return sortedModes; |
| } |
| |
| std::pair<unsigned, unsigned> divisorRange(Fps fps, FpsRange range, |
| RefreshRateSelector::Config::FrameRateOverride config) { |
| if (config != RefreshRateSelector::Config::FrameRateOverride::Enabled) { |
| return {1, 1}; |
| } |
| |
| using fps_approx_ops::operator/; |
| // use signed type as `fps / range.max` might be 0 |
| const auto start = std::max(1, static_cast<int>(fps / range.max) - 1); |
| const auto end = fps / |
| std::max(range.min, RefreshRateSelector::kMinSupportedFrameRate, |
| fps_approx_ops::operator<); |
| |
| return {start, end}; |
| } |
| |
| bool shouldEnableFrameRateOverride(const std::vector<DisplayModeIterator>& sortedModes) { |
| for (const auto it1 : sortedModes) { |
| const auto& mode1 = it1->second; |
| for (const auto it2 : sortedModes) { |
| const auto& mode2 = it2->second; |
| |
| if (RefreshRateSelector::getFrameRateDivisor(mode1->getFps(), mode2->getFps()) >= 2) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| std::string toString(const RefreshRateSelector::PolicyVariant& policy) { |
| using namespace std::string_literals; |
| |
| return ftl::match( |
| policy, |
| [](const RefreshRateSelector::DisplayManagerPolicy& policy) { |
| return "DisplayManagerPolicy"s + policy.toString(); |
| }, |
| [](const RefreshRateSelector::OverridePolicy& policy) { |
| return "OverridePolicy"s + policy.toString(); |
| }, |
| [](RefreshRateSelector::NoOverridePolicy) { return "NoOverridePolicy"s; }); |
| } |
| |
| } // namespace |
| |
| auto RefreshRateSelector::createFrameRateModes( |
| std::function<bool(const DisplayMode&)>&& filterModes, const FpsRange& renderRange) const |
| -> std::vector<FrameRateMode> { |
| struct Key { |
| Fps fps; |
| int32_t group; |
| }; |
| |
| struct KeyLess { |
| bool operator()(const Key& a, const Key& b) const { |
| using namespace fps_approx_ops; |
| if (a.fps != b.fps) { |
| return a.fps < b.fps; |
| } |
| |
| // For the same fps the order doesn't really matter, but we still |
| // want the behaviour of a strictly less operator. |
| // We use the group id as the secondary ordering for that. |
| return a.group < b.group; |
| } |
| }; |
| |
| std::map<Key, DisplayModeIterator, KeyLess> ratesMap; |
| for (auto it = mDisplayModes.begin(); it != mDisplayModes.end(); ++it) { |
| const auto& [id, mode] = *it; |
| |
| if (!filterModes(*mode)) { |
| continue; |
| } |
| const auto [start, end] = |
| divisorRange(mode->getFps(), renderRange, mConfig.enableFrameRateOverride); |
| for (auto divisor = start; divisor <= end; divisor++) { |
| const auto fps = mode->getFps() / divisor; |
| using fps_approx_ops::operator<; |
| if (divisor > 1 && fps < kMinSupportedFrameRate) { |
| break; |
| } |
| |
| if (mConfig.enableFrameRateOverride == Config::FrameRateOverride::Enabled && |
| !renderRange.includes(fps)) { |
| continue; |
| } |
| |
| if (mConfig.enableFrameRateOverride == |
| Config::FrameRateOverride::AppOverrideNativeRefreshRates && |
| !isNativeRefreshRate(fps)) { |
| continue; |
| } |
| |
| const auto [existingIter, emplaceHappened] = |
| ratesMap.try_emplace(Key{fps, mode->getGroup()}, it); |
| if (emplaceHappened) { |
| ALOGV("%s: including %s (%s)", __func__, to_string(fps).c_str(), |
| to_string(mode->getFps()).c_str()); |
| } else { |
| // We might need to update the map as we found a lower refresh rate |
| if (isStrictlyLess(mode->getFps(), existingIter->second->second->getFps())) { |
| existingIter->second = it; |
| ALOGV("%s: changing %s (%s)", __func__, to_string(fps).c_str(), |
| to_string(mode->getFps()).c_str()); |
| } |
| } |
| } |
| } |
| |
| std::vector<FrameRateMode> frameRateModes; |
| frameRateModes.reserve(ratesMap.size()); |
| for (const auto& [key, mode] : ratesMap) { |
| frameRateModes.emplace_back(FrameRateMode{key.fps, ftl::as_non_null(mode->second)}); |
| } |
| |
| // We always want that the lowest frame rate will be corresponding to the |
| // lowest mode for power saving. |
| const auto lowestRefreshRateIt = |
| std::min_element(frameRateModes.begin(), frameRateModes.end(), |
| [](const FrameRateMode& lhs, const FrameRateMode& rhs) { |
| return isStrictlyLess(lhs.modePtr->getFps(), |
| rhs.modePtr->getFps()); |
| }); |
| frameRateModes.erase(frameRateModes.begin(), lowestRefreshRateIt); |
| |
| return frameRateModes; |
| } |
| |
| struct RefreshRateSelector::RefreshRateScoreComparator { |
| bool operator()(const RefreshRateScore& lhs, const RefreshRateScore& rhs) const { |
| const auto& [frameRateMode, overallScore, _] = lhs; |
| |
| std::string name = to_string(frameRateMode); |
| |
| ALOGV("%s sorting scores %.2f", name.c_str(), overallScore); |
| |
| if (!ScoredFrameRate::scoresEqual(overallScore, rhs.overallScore)) { |
| return overallScore > rhs.overallScore; |
| } |
| |
| if (refreshRateOrder == RefreshRateOrder::Descending) { |
| using fps_approx_ops::operator>; |
| return frameRateMode.fps > rhs.frameRateMode.fps; |
| } else { |
| using fps_approx_ops::operator<; |
| return frameRateMode.fps < rhs.frameRateMode.fps; |
| } |
| } |
| |
| const RefreshRateOrder refreshRateOrder; |
| }; |
| |
| std::string RefreshRateSelector::Policy::toString() const { |
| return base::StringPrintf("{defaultModeId=%d, allowGroupSwitching=%s" |
| ", primaryRanges=%s, appRequestRanges=%s}", |
| defaultMode.value(), allowGroupSwitching ? "true" : "false", |
| to_string(primaryRanges).c_str(), |
| to_string(appRequestRanges).c_str()); |
| } |
| |
| std::pair<nsecs_t, nsecs_t> RefreshRateSelector::getDisplayFrames(nsecs_t layerPeriod, |
| nsecs_t displayPeriod) const { |
| auto [quotient, remainder] = std::div(layerPeriod, displayPeriod); |
| if (remainder <= MARGIN_FOR_PERIOD_CALCULATION || |
| std::abs(remainder - displayPeriod) <= MARGIN_FOR_PERIOD_CALCULATION) { |
| quotient++; |
| remainder = 0; |
| } |
| |
| return {quotient, remainder}; |
| } |
| |
| float RefreshRateSelector::calculateNonExactMatchingLayerScoreLocked(const LayerRequirement& layer, |
| Fps refreshRate) const { |
| constexpr float kScoreForFractionalPairs = .8f; |
| |
| const auto displayPeriod = refreshRate.getPeriodNsecs(); |
| const auto layerPeriod = layer.desiredRefreshRate.getPeriodNsecs(); |
| if (layer.vote == LayerVoteType::ExplicitDefault) { |
| // Find the actual rate the layer will render, assuming |
| // that layerPeriod is the minimal period to render a frame. |
| // For example if layerPeriod is 20ms and displayPeriod is 16ms, |
| // then the actualLayerPeriod will be 32ms, because it is the |
| // smallest multiple of the display period which is >= layerPeriod. |
| auto actualLayerPeriod = displayPeriod; |
| int multiplier = 1; |
| while (layerPeriod > actualLayerPeriod + MARGIN_FOR_PERIOD_CALCULATION) { |
| multiplier++; |
| actualLayerPeriod = displayPeriod * multiplier; |
| } |
| |
| // Because of the threshold we used above it's possible that score is slightly |
| // above 1. |
| return std::min(1.0f, |
| static_cast<float>(layerPeriod) / static_cast<float>(actualLayerPeriod)); |
| } |
| |
| if (layer.vote == LayerVoteType::ExplicitExactOrMultiple || |
| layer.vote == LayerVoteType::Heuristic) { |
| const float multiplier = refreshRate.getValue() / layer.desiredRefreshRate.getValue(); |
| |
| // We only want to score this layer as a fractional pair if the content is not |
| // significantly faster than the display rate, at it would cause a significant frame drop. |
| // It is more appropriate to choose a higher display rate even if |
| // a pull-down will be required. |
| constexpr float kMinMultiplier = 0.75f; |
| if (multiplier >= kMinMultiplier && |
| isFractionalPairOrMultiple(refreshRate, layer.desiredRefreshRate)) { |
| return kScoreForFractionalPairs; |
| } |
| |
| // Calculate how many display vsyncs we need to present a single frame for this |
| // layer |
| const auto [displayFramesQuotient, displayFramesRemainder] = |
| getDisplayFrames(layerPeriod, displayPeriod); |
| static constexpr size_t MAX_FRAMES_TO_FIT = 10; // Stop calculating when score < 0.1 |
| if (displayFramesRemainder == 0) { |
| // Layer desired refresh rate matches the display rate. |
| return 1.0f; |
| } |
| |
| if (displayFramesQuotient == 0) { |
| // Layer desired refresh rate is higher than the display rate. |
| return (static_cast<float>(layerPeriod) / static_cast<float>(displayPeriod)) * |
| (1.0f / (MAX_FRAMES_TO_FIT + 1)); |
| } |
| |
| // Layer desired refresh rate is lower than the display rate. Check how well it fits |
| // the cadence. |
| auto diff = std::abs(displayFramesRemainder - (displayPeriod - displayFramesRemainder)); |
| int iter = 2; |
| while (diff > MARGIN_FOR_PERIOD_CALCULATION && iter < MAX_FRAMES_TO_FIT) { |
| diff = diff - (displayPeriod - diff); |
| iter++; |
| } |
| |
| return (1.0f / iter); |
| } |
| |
| return 0; |
| } |
| |
| float RefreshRateSelector::calculateDistanceScoreFromMax(Fps refreshRate) const { |
| const auto& maxFps = mAppRequestFrameRates.back().fps; |
| const float ratio = refreshRate.getValue() / maxFps.getValue(); |
| // Use ratio^2 to get a lower score the more we get further from peak |
| return ratio * ratio; |
| } |
| |
| float RefreshRateSelector::calculateLayerScoreLocked(const LayerRequirement& layer, Fps refreshRate, |
| bool isSeamlessSwitch) const { |
| ATRACE_CALL(); |
| // Slightly prefer seamless switches. |
| constexpr float kSeamedSwitchPenalty = 0.95f; |
| const float seamlessness = isSeamlessSwitch ? 1.0f : kSeamedSwitchPenalty; |
| |
| // If the layer wants Max, give higher score to the higher refresh rate |
| if (layer.vote == LayerVoteType::Max) { |
| return calculateDistanceScoreFromMax(refreshRate); |
| } |
| |
| if (layer.vote == LayerVoteType::ExplicitExact) { |
| const int divisor = getFrameRateDivisor(refreshRate, layer.desiredRefreshRate); |
| if (supportsAppFrameRateOverrideByContent()) { |
| // Since we support frame rate override, allow refresh rates which are |
| // multiples of the layer's request, as those apps would be throttled |
| // down to run at the desired refresh rate. |
| return divisor > 0; |
| } |
| |
| return divisor == 1; |
| } |
| |
| // If the layer frame rate is a divisor of the refresh rate it should score |
| // the highest score. |
| if (getFrameRateDivisor(refreshRate, layer.desiredRefreshRate) > 0) { |
| return 1.0f * seamlessness; |
| } |
| |
| // The layer frame rate is not a divisor of the refresh rate, |
| // there is a small penalty attached to the score to favor the frame rates |
| // the exactly matches the display refresh rate or a multiple. |
| constexpr float kNonExactMatchingPenalty = 0.95f; |
| return calculateNonExactMatchingLayerScoreLocked(layer, refreshRate) * seamlessness * |
| kNonExactMatchingPenalty; |
| } |
| |
| auto RefreshRateSelector::getRankedFrameRates(const std::vector<LayerRequirement>& layers, |
| GlobalSignals signals) const -> RankedFrameRates { |
| std::lock_guard lock(mLock); |
| |
| if (mGetRankedFrameRatesCache && |
| mGetRankedFrameRatesCache->arguments == std::make_pair(layers, signals)) { |
| return mGetRankedFrameRatesCache->result; |
| } |
| |
| const auto result = getRankedFrameRatesLocked(layers, signals); |
| mGetRankedFrameRatesCache = GetRankedFrameRatesCache{{layers, signals}, result}; |
| return result; |
| } |
| |
| auto RefreshRateSelector::getRankedFrameRatesLocked(const std::vector<LayerRequirement>& layers, |
| GlobalSignals signals) const |
| -> RankedFrameRates { |
| using namespace fps_approx_ops; |
| ATRACE_CALL(); |
| ALOGV("%s: %zu layers", __func__, layers.size()); |
| |
| const auto& activeMode = *getActiveModeLocked().modePtr; |
| |
| // Keep the display at max frame rate for the duration of powering on the display. |
| if (signals.powerOnImminent) { |
| ALOGV("Power On Imminent"); |
| const auto ranking = rankFrameRates(activeMode.getGroup(), RefreshRateOrder::Descending); |
| ATRACE_FORMAT_INSTANT("%s (Power On Imminent)", |
| to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, GlobalSignals{.powerOnImminent = true}}; |
| } |
| |
| int noVoteLayers = 0; |
| int minVoteLayers = 0; |
| int maxVoteLayers = 0; |
| int explicitDefaultVoteLayers = 0; |
| int explicitExactOrMultipleVoteLayers = 0; |
| int explicitExact = 0; |
| int seamedFocusedLayers = 0; |
| |
| for (const auto& layer : layers) { |
| switch (layer.vote) { |
| case LayerVoteType::NoVote: |
| noVoteLayers++; |
| break; |
| case LayerVoteType::Min: |
| minVoteLayers++; |
| break; |
| case LayerVoteType::Max: |
| maxVoteLayers++; |
| break; |
| case LayerVoteType::ExplicitDefault: |
| explicitDefaultVoteLayers++; |
| break; |
| case LayerVoteType::ExplicitExactOrMultiple: |
| explicitExactOrMultipleVoteLayers++; |
| break; |
| case LayerVoteType::ExplicitExact: |
| explicitExact++; |
| break; |
| case LayerVoteType::Heuristic: |
| break; |
| } |
| |
| if (layer.seamlessness == Seamlessness::SeamedAndSeamless && layer.focused) { |
| seamedFocusedLayers++; |
| } |
| } |
| |
| const bool hasExplicitVoteLayers = explicitDefaultVoteLayers > 0 || |
| explicitExactOrMultipleVoteLayers > 0 || explicitExact > 0; |
| |
| const Policy* policy = getCurrentPolicyLocked(); |
| const auto& defaultMode = mDisplayModes.get(policy->defaultMode)->get(); |
| |
| // If the default mode group is different from the group of current mode, |
| // this means a layer requesting a seamed mode switch just disappeared and |
| // we should switch back to the default group. |
| // However if a seamed layer is still present we anchor around the group |
| // of the current mode, in order to prevent unnecessary seamed mode switches |
| // (e.g. when pausing a video playback). |
| const auto anchorGroup = |
| seamedFocusedLayers > 0 ? activeMode.getGroup() : defaultMode->getGroup(); |
| |
| // Consider the touch event if there are no Explicit* layers. Otherwise wait until after we've |
| // selected a refresh rate to see if we should apply touch boost. |
| if (signals.touch && !hasExplicitVoteLayers) { |
| ALOGV("Touch Boost"); |
| const auto ranking = rankFrameRates(anchorGroup, RefreshRateOrder::Descending); |
| ATRACE_FORMAT_INSTANT("%s (Touch Boost)", |
| to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, GlobalSignals{.touch = true}}; |
| } |
| |
| // If the primary range consists of a single refresh rate then we can only |
| // move out the of range if layers explicitly request a different refresh |
| // rate. |
| const bool primaryRangeIsSingleRate = |
| isApproxEqual(policy->primaryRanges.physical.min, policy->primaryRanges.physical.max); |
| |
| if (!signals.touch && signals.idle && !(primaryRangeIsSingleRate && hasExplicitVoteLayers)) { |
| ALOGV("Idle"); |
| const auto ranking = rankFrameRates(activeMode.getGroup(), RefreshRateOrder::Ascending); |
| ATRACE_FORMAT_INSTANT("%s (Idle)", to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, GlobalSignals{.idle = true}}; |
| } |
| |
| if (layers.empty() || noVoteLayers == layers.size()) { |
| ALOGV("No layers with votes"); |
| const auto ranking = rankFrameRates(anchorGroup, RefreshRateOrder::Descending); |
| ATRACE_FORMAT_INSTANT("%s (No layers with votes)", |
| to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, kNoSignals}; |
| } |
| |
| // Only if all layers want Min we should return Min |
| if (noVoteLayers + minVoteLayers == layers.size()) { |
| ALOGV("All layers Min"); |
| const auto ranking = rankFrameRates(activeMode.getGroup(), RefreshRateOrder::Ascending); |
| ATRACE_FORMAT_INSTANT("%s (All layers Min)", |
| to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, kNoSignals}; |
| } |
| |
| // Find the best refresh rate based on score |
| std::vector<RefreshRateScore> scores; |
| scores.reserve(mAppRequestFrameRates.size()); |
| |
| for (const FrameRateMode& it : mAppRequestFrameRates) { |
| scores.emplace_back(RefreshRateScore{it, 0.0f}); |
| } |
| |
| for (const auto& layer : layers) { |
| ALOGV("Calculating score for %s (%s, weight %.2f, desired %.2f) ", layer.name.c_str(), |
| ftl::enum_string(layer.vote).c_str(), layer.weight, |
| layer.desiredRefreshRate.getValue()); |
| if (layer.vote == LayerVoteType::NoVote || layer.vote == LayerVoteType::Min) { |
| continue; |
| } |
| |
| const auto weight = layer.weight; |
| |
| for (auto& [mode, overallScore, fixedRateBelowThresholdLayersScore] : scores) { |
| const auto& [fps, modePtr] = mode; |
| const bool isSeamlessSwitch = modePtr->getGroup() == activeMode.getGroup(); |
| |
| if (layer.seamlessness == Seamlessness::OnlySeamless && !isSeamlessSwitch) { |
| ALOGV("%s ignores %s to avoid non-seamless switch. Current mode = %s", |
| formatLayerInfo(layer, weight).c_str(), to_string(*modePtr).c_str(), |
| to_string(activeMode).c_str()); |
| continue; |
| } |
| |
| if (layer.seamlessness == Seamlessness::SeamedAndSeamless && !isSeamlessSwitch && |
| !layer.focused) { |
| ALOGV("%s ignores %s because it's not focused and the switch is going to be seamed." |
| " Current mode = %s", |
| formatLayerInfo(layer, weight).c_str(), to_string(*modePtr).c_str(), |
| to_string(activeMode).c_str()); |
| continue; |
| } |
| |
| // Layers with default seamlessness vote for the current mode group if |
| // there are layers with seamlessness=SeamedAndSeamless and for the default |
| // mode group otherwise. In second case, if the current mode group is different |
| // from the default, this means a layer with seamlessness=SeamedAndSeamless has just |
| // disappeared. |
| const bool isInPolicyForDefault = modePtr->getGroup() == anchorGroup; |
| if (layer.seamlessness == Seamlessness::Default && !isInPolicyForDefault) { |
| ALOGV("%s ignores %s. Current mode = %s", formatLayerInfo(layer, weight).c_str(), |
| to_string(*modePtr).c_str(), to_string(activeMode).c_str()); |
| continue; |
| } |
| |
| const bool inPrimaryRange = policy->primaryRanges.render.includes(fps); |
| if ((primaryRangeIsSingleRate || !inPrimaryRange) && |
| !(layer.focused && |
| (layer.vote == LayerVoteType::ExplicitDefault || |
| layer.vote == LayerVoteType::ExplicitExact))) { |
| // Only focused layers with ExplicitDefault frame rate settings are allowed to score |
| // refresh rates outside the primary range. |
| continue; |
| } |
| |
| const float layerScore = calculateLayerScoreLocked(layer, fps, isSeamlessSwitch); |
| const float weightedLayerScore = weight * layerScore; |
| |
| // Layer with fixed source has a special consideration which depends on the |
| // mConfig.frameRateMultipleThreshold. We don't want these layers to score |
| // refresh rates above the threshold, but we also don't want to favor the lower |
| // ones by having a greater number of layers scoring them. Instead, we calculate |
| // the score independently for these layers and later decide which |
| // refresh rates to add it. For example, desired 24 fps with 120 Hz threshold should not |
| // score 120 Hz, but desired 60 fps should contribute to the score. |
| const bool fixedSourceLayer = [](LayerVoteType vote) { |
| switch (vote) { |
| case LayerVoteType::ExplicitExactOrMultiple: |
| case LayerVoteType::Heuristic: |
| return true; |
| case LayerVoteType::NoVote: |
| case LayerVoteType::Min: |
| case LayerVoteType::Max: |
| case LayerVoteType::ExplicitDefault: |
| case LayerVoteType::ExplicitExact: |
| return false; |
| } |
| }(layer.vote); |
| const bool layerBelowThreshold = mConfig.frameRateMultipleThreshold != 0 && |
| layer.desiredRefreshRate < |
| Fps::fromValue(mConfig.frameRateMultipleThreshold / 2); |
| if (fixedSourceLayer && layerBelowThreshold) { |
| const bool modeAboveThreshold = |
| modePtr->getFps() >= Fps::fromValue(mConfig.frameRateMultipleThreshold); |
| if (modeAboveThreshold) { |
| ALOGV("%s gives %s (%s) fixed source (above threshold) score of %.4f", |
| formatLayerInfo(layer, weight).c_str(), to_string(fps).c_str(), |
| to_string(modePtr->getFps()).c_str(), layerScore); |
| fixedRateBelowThresholdLayersScore.modeAboveThreshold += weightedLayerScore; |
| } else { |
| ALOGV("%s gives %s (%s) fixed source (below threshold) score of %.4f", |
| formatLayerInfo(layer, weight).c_str(), to_string(fps).c_str(), |
| to_string(modePtr->getFps()).c_str(), layerScore); |
| fixedRateBelowThresholdLayersScore.modeBelowThreshold += weightedLayerScore; |
| } |
| } else { |
| ALOGV("%s gives %s (%s) score of %.4f", formatLayerInfo(layer, weight).c_str(), |
| to_string(fps).c_str(), to_string(modePtr->getFps()).c_str(), layerScore); |
| overallScore += weightedLayerScore; |
| } |
| } |
| } |
| |
| // We want to find the best refresh rate without the fixed source layers, |
| // so we could know whether we should add the modeAboveThreshold scores or not. |
| // If the best refresh rate is already above the threshold, it means that |
| // some non-fixed source layers already scored it, so we can just add the score |
| // for all fixed source layers, even the ones that are above the threshold. |
| const bool maxScoreAboveThreshold = [&] { |
| if (mConfig.frameRateMultipleThreshold == 0 || scores.empty()) { |
| return false; |
| } |
| |
| const auto maxScoreIt = |
| std::max_element(scores.begin(), scores.end(), |
| [](RefreshRateScore max, RefreshRateScore current) { |
| return current.overallScore > max.overallScore; |
| }); |
| ALOGV("%s (%s) is the best refresh rate without fixed source layers. It is %s the " |
| "threshold for " |
| "refresh rate multiples", |
| to_string(maxScoreIt->frameRateMode.fps).c_str(), |
| to_string(maxScoreIt->frameRateMode.modePtr->getFps()).c_str(), |
| maxScoreAboveThreshold ? "above" : "below"); |
| return maxScoreIt->frameRateMode.modePtr->getFps() >= |
| Fps::fromValue(mConfig.frameRateMultipleThreshold); |
| }(); |
| |
| // Now we can add the fixed rate layers score |
| for (auto& [frameRateMode, overallScore, fixedRateBelowThresholdLayersScore] : scores) { |
| overallScore += fixedRateBelowThresholdLayersScore.modeBelowThreshold; |
| if (maxScoreAboveThreshold) { |
| overallScore += fixedRateBelowThresholdLayersScore.modeAboveThreshold; |
| } |
| ALOGV("%s (%s) adjusted overallScore is %.4f", to_string(frameRateMode.fps).c_str(), |
| to_string(frameRateMode.modePtr->getFps()).c_str(), overallScore); |
| } |
| |
| // Now that we scored all the refresh rates we need to pick the one that got the highest |
| // overallScore. Sort the scores based on their overallScore in descending order of priority. |
| const RefreshRateOrder refreshRateOrder = |
| maxVoteLayers > 0 ? RefreshRateOrder::Descending : RefreshRateOrder::Ascending; |
| std::sort(scores.begin(), scores.end(), |
| RefreshRateScoreComparator{.refreshRateOrder = refreshRateOrder}); |
| |
| FrameRateRanking ranking; |
| ranking.reserve(scores.size()); |
| |
| std::transform(scores.begin(), scores.end(), back_inserter(ranking), |
| [](const RefreshRateScore& score) { |
| return ScoredFrameRate{score.frameRateMode, score.overallScore}; |
| }); |
| |
| const bool noLayerScore = std::all_of(scores.begin(), scores.end(), [](RefreshRateScore score) { |
| return score.overallScore == 0; |
| }); |
| |
| if (primaryRangeIsSingleRate) { |
| // If we never scored any layers, then choose the rate from the primary |
| // range instead of picking a random score from the app range. |
| if (noLayerScore) { |
| ALOGV("Layers not scored"); |
| const auto descending = rankFrameRates(anchorGroup, RefreshRateOrder::Descending); |
| ATRACE_FORMAT_INSTANT("%s (Layers not scored)", |
| to_string(descending.front().frameRateMode.fps).c_str()); |
| return {descending, kNoSignals}; |
| } else { |
| ATRACE_FORMAT_INSTANT("%s (primaryRangeIsSingleRate)", |
| to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, kNoSignals}; |
| } |
| } |
| |
| // Consider the touch event if there are no ExplicitDefault layers. ExplicitDefault are mostly |
| // interactive (as opposed to ExplicitExactOrMultiple) and therefore if those posted an explicit |
| // vote we should not change it if we get a touch event. Only apply touch boost if it will |
| // actually increase the refresh rate over the normal selection. |
| const bool touchBoostForExplicitExact = [&] { |
| if (supportsAppFrameRateOverrideByContent()) { |
| // Enable touch boost if there are other layers besides exact |
| return explicitExact + noVoteLayers != layers.size(); |
| } else { |
| // Enable touch boost if there are no exact layers |
| return explicitExact == 0; |
| } |
| }(); |
| |
| const auto touchRefreshRates = rankFrameRates(anchorGroup, RefreshRateOrder::Descending); |
| using fps_approx_ops::operator<; |
| |
| if (signals.touch && explicitDefaultVoteLayers == 0 && touchBoostForExplicitExact && |
| scores.front().frameRateMode.fps < touchRefreshRates.front().frameRateMode.fps) { |
| ALOGV("Touch Boost"); |
| ATRACE_FORMAT_INSTANT("%s (Touch Boost [late])", |
| to_string(touchRefreshRates.front().frameRateMode.fps).c_str()); |
| return {touchRefreshRates, GlobalSignals{.touch = true}}; |
| } |
| |
| // If we never scored any layers, and we don't favor high refresh rates, prefer to stay with the |
| // current config |
| if (noLayerScore && refreshRateOrder == RefreshRateOrder::Ascending) { |
| const auto ascendingWithPreferred = |
| rankFrameRates(anchorGroup, RefreshRateOrder::Ascending, activeMode.getId()); |
| ATRACE_FORMAT_INSTANT("%s (preferredDisplayMode)", |
| to_string(ascendingWithPreferred.front().frameRateMode.fps).c_str()); |
| return {ascendingWithPreferred, kNoSignals}; |
| } |
| |
| ATRACE_FORMAT_INSTANT("%s (scored))", to_string(ranking.front().frameRateMode.fps).c_str()); |
| return {ranking, kNoSignals}; |
| } |
| |
| using LayerRequirementPtrs = std::vector<const RefreshRateSelector::LayerRequirement*>; |
| using PerUidLayerRequirements = std::unordered_map<uid_t, LayerRequirementPtrs>; |
| |
| PerUidLayerRequirements groupLayersByUid( |
| const std::vector<RefreshRateSelector::LayerRequirement>& layers) { |
| PerUidLayerRequirements layersByUid; |
| for (const auto& layer : layers) { |
| const auto it = layersByUid.emplace(layer.ownerUid, LayerRequirementPtrs()).first; |
| auto& layersWithSameUid = it->second; |
| layersWithSameUid.push_back(&layer); |
| } |
| |
| // Remove uids that can't have a frame rate override |
| for (auto it = layersByUid.begin(); it != layersByUid.end();) { |
| const auto& layersWithSameUid = it->second; |
| bool skipUid = false; |
| for (const auto& layer : layersWithSameUid) { |
| using LayerVoteType = RefreshRateSelector::LayerVoteType; |
| |
| if (layer->vote == LayerVoteType::Max || layer->vote == LayerVoteType::Heuristic) { |
| skipUid = true; |
| break; |
| } |
| } |
| if (skipUid) { |
| it = layersByUid.erase(it); |
| } else { |
| ++it; |
| } |
| } |
| |
| return layersByUid; |
| } |
| |
| auto RefreshRateSelector::getFrameRateOverrides(const std::vector<LayerRequirement>& layers, |
| Fps displayRefreshRate, |
| GlobalSignals globalSignals) const |
| -> UidToFrameRateOverride { |
| ATRACE_CALL(); |
| if (mConfig.enableFrameRateOverride == Config::FrameRateOverride::Disabled) { |
| return {}; |
| } |
| |
| ALOGV("%s: %zu layers", __func__, layers.size()); |
| std::lock_guard lock(mLock); |
| |
| const auto* policyPtr = getCurrentPolicyLocked(); |
| // We don't want to run lower than 30fps |
| const Fps minFrameRate = std::max(policyPtr->appRequestRanges.render.min, 30_Hz, isApproxLess); |
| |
| using fps_approx_ops::operator/; |
| const unsigned numMultiples = displayRefreshRate / minFrameRate; |
| |
| std::vector<std::pair<Fps, float>> scoredFrameRates; |
| scoredFrameRates.reserve(numMultiples); |
| |
| for (unsigned n = numMultiples; n > 0; n--) { |
| const Fps divisor = displayRefreshRate / n; |
| if (mConfig.enableFrameRateOverride == |
| Config::FrameRateOverride::AppOverrideNativeRefreshRates && |
| !isNativeRefreshRate(divisor)) { |
| continue; |
| } |
| |
| if (policyPtr->appRequestRanges.render.includes(divisor)) { |
| ALOGV("%s: adding %s as a potential frame rate", __func__, to_string(divisor).c_str()); |
| scoredFrameRates.emplace_back(divisor, 0); |
| } |
| } |
| |
| const auto layersByUid = groupLayersByUid(layers); |
| UidToFrameRateOverride frameRateOverrides; |
| for (const auto& [uid, layersWithSameUid] : layersByUid) { |
| // Layers with ExplicitExactOrMultiple expect touch boost |
| const bool hasExplicitExactOrMultiple = |
| std::any_of(layersWithSameUid.cbegin(), layersWithSameUid.cend(), |
| [](const auto& layer) { |
| return layer->vote == LayerVoteType::ExplicitExactOrMultiple; |
| }); |
| |
| if (globalSignals.touch && hasExplicitExactOrMultiple) { |
| continue; |
| } |
| |
| for (auto& [_, score] : scoredFrameRates) { |
| score = 0; |
| } |
| |
| for (const auto& layer : layersWithSameUid) { |
| if (layer->vote == LayerVoteType::NoVote || layer->vote == LayerVoteType::Min) { |
| continue; |
| } |
| |
| LOG_ALWAYS_FATAL_IF(layer->vote != LayerVoteType::ExplicitDefault && |
| layer->vote != LayerVoteType::ExplicitExactOrMultiple && |
| layer->vote != LayerVoteType::ExplicitExact); |
| for (auto& [fps, score] : scoredFrameRates) { |
| constexpr bool isSeamlessSwitch = true; |
| const auto layerScore = calculateLayerScoreLocked(*layer, fps, isSeamlessSwitch); |
| score += layer->weight * layerScore; |
| } |
| } |
| |
| // If we never scored any layers, we don't have a preferred frame rate |
| if (std::all_of(scoredFrameRates.begin(), scoredFrameRates.end(), |
| [](const auto& scoredFrameRate) { |
| const auto [_, score] = scoredFrameRate; |
| return score == 0; |
| })) { |
| continue; |
| } |
| |
| // Now that we scored all the refresh rates we need to pick the lowest refresh rate |
| // that got the highest score. |
| const auto [overrideFps, _] = |
| *std::max_element(scoredFrameRates.begin(), scoredFrameRates.end(), |
| [](const auto& lhsPair, const auto& rhsPair) { |
| const float lhs = lhsPair.second; |
| const float rhs = rhsPair.second; |
| return lhs < rhs && !ScoredFrameRate::scoresEqual(lhs, rhs); |
| }); |
| ALOGV("%s: overriding to %s for uid=%d", __func__, to_string(overrideFps).c_str(), uid); |
| frameRateOverrides.emplace(uid, overrideFps); |
| } |
| |
| return frameRateOverrides; |
| } |
| |
| ftl::Optional<FrameRateMode> RefreshRateSelector::onKernelTimerChanged( |
| std::optional<DisplayModeId> desiredActiveModeId, bool timerExpired) const { |
| std::lock_guard lock(mLock); |
| |
| const auto current = [&]() REQUIRES(mLock) -> FrameRateMode { |
| if (desiredActiveModeId) { |
| const auto& modePtr = mDisplayModes.get(*desiredActiveModeId)->get(); |
| return FrameRateMode{modePtr->getFps(), ftl::as_non_null(modePtr)}; |
| } |
| |
| return getActiveModeLocked(); |
| }(); |
| |
| const DisplayModePtr& min = mMinRefreshRateModeIt->second; |
| if (current.modePtr->getId() == min->getId()) { |
| return {}; |
| } |
| |
| return timerExpired ? FrameRateMode{min->getFps(), ftl::as_non_null(min)} : current; |
| } |
| |
| const DisplayModePtr& RefreshRateSelector::getMinRefreshRateByPolicyLocked() const { |
| const auto& activeMode = *getActiveModeLocked().modePtr; |
| |
| for (const FrameRateMode& mode : mPrimaryFrameRates) { |
| if (activeMode.getGroup() == mode.modePtr->getGroup()) { |
| return mode.modePtr.get(); |
| } |
| } |
| |
| ALOGE("Can't find min refresh rate by policy with the same mode group as the current mode %s", |
| to_string(activeMode).c_str()); |
| |
| // Default to the lowest refresh rate. |
| return mPrimaryFrameRates.front().modePtr.get(); |
| } |
| |
| const DisplayModePtr& RefreshRateSelector::getMaxRefreshRateByPolicyLocked(int anchorGroup) const { |
| const ftl::NonNull<DisplayModePtr>* maxByAnchor = &mPrimaryFrameRates.back().modePtr; |
| const ftl::NonNull<DisplayModePtr>* max = &mPrimaryFrameRates.back().modePtr; |
| |
| bool maxByAnchorFound = false; |
| for (auto it = mPrimaryFrameRates.rbegin(); it != mPrimaryFrameRates.rend(); ++it) { |
| using namespace fps_approx_ops; |
| if (it->modePtr->getFps() > (*max)->getFps()) { |
| max = &it->modePtr; |
| } |
| |
| if (anchorGroup == it->modePtr->getGroup() && |
| it->modePtr->getFps() >= (*maxByAnchor)->getFps()) { |
| maxByAnchorFound = true; |
| maxByAnchor = &it->modePtr; |
| } |
| } |
| |
| if (maxByAnchorFound) { |
| return maxByAnchor->get(); |
| } |
| |
| ALOGE("Can't find max refresh rate by policy with the same group %d", anchorGroup); |
| |
| // Default to the highest refresh rate. |
| return max->get(); |
| } |
| |
| auto RefreshRateSelector::rankFrameRates(std::optional<int> anchorGroupOpt, |
| RefreshRateOrder refreshRateOrder, |
| std::optional<DisplayModeId> preferredDisplayModeOpt) const |
| -> FrameRateRanking { |
| using fps_approx_ops::operator<; |
| const char* const whence = __func__; |
| |
| // find the highest frame rate for each display mode |
| ftl::SmallMap<DisplayModeId, Fps, 8> maxRenderRateForMode; |
| const bool ascending = (refreshRateOrder == RefreshRateOrder::Ascending); |
| if (ascending) { |
| // TODO(b/266481656): Once this bug is fixed, we can remove this workaround and actually |
| // use a lower frame rate when we want Ascending frame rates. |
| for (const auto& frameRateMode : mPrimaryFrameRates) { |
| if (anchorGroupOpt && frameRateMode.modePtr->getGroup() != anchorGroupOpt) { |
| continue; |
| } |
| |
| const auto [iter, _] = maxRenderRateForMode.try_emplace(frameRateMode.modePtr->getId(), |
| frameRateMode.fps); |
| if (iter->second < frameRateMode.fps) { |
| iter->second = frameRateMode.fps; |
| } |
| } |
| } |
| |
| std::deque<ScoredFrameRate> ranking; |
| const auto rankFrameRate = [&](const FrameRateMode& frameRateMode) REQUIRES(mLock) { |
| const auto& modePtr = frameRateMode.modePtr; |
| if (anchorGroupOpt && modePtr->getGroup() != anchorGroupOpt) { |
| return; |
| } |
| |
| const bool ascending = (refreshRateOrder == RefreshRateOrder::Ascending); |
| const auto id = modePtr->getId(); |
| if (ascending && frameRateMode.fps < *maxRenderRateForMode.get(id)) { |
| // TODO(b/266481656): Once this bug is fixed, we can remove this workaround and actually |
| // use a lower frame rate when we want Ascending frame rates. |
| return; |
| } |
| |
| float score = calculateDistanceScoreFromMax(frameRateMode.fps); |
| |
| if (ascending) { |
| score = 1.0f / score; |
| } |
| |
| constexpr float kScore = std::numeric_limits<float>::max(); |
| if (preferredDisplayModeOpt) { |
| if (*preferredDisplayModeOpt == modePtr->getId()) { |
| ranking.emplace_front(ScoredFrameRate{frameRateMode, kScore}); |
| return; |
| } |
| constexpr float kNonPreferredModePenalty = 0.95f; |
| score *= kNonPreferredModePenalty; |
| } else if (ascending && id == getMinRefreshRateByPolicyLocked()->getId()) { |
| // TODO(b/266481656): Once this bug is fixed, we can remove this workaround |
| // and actually use a lower frame rate when we want Ascending frame rates. |
| ranking.emplace_front(ScoredFrameRate{frameRateMode, kScore}); |
| return; |
| } |
| |
| ALOGV("%s(%s) %s (%s) scored %.2f", whence, ftl::enum_string(refreshRateOrder).c_str(), |
| to_string(frameRateMode.fps).c_str(), to_string(modePtr->getFps()).c_str(), score); |
| ranking.emplace_back(ScoredFrameRate{frameRateMode, score}); |
| }; |
| |
| if (refreshRateOrder == RefreshRateOrder::Ascending) { |
| std::for_each(mPrimaryFrameRates.begin(), mPrimaryFrameRates.end(), rankFrameRate); |
| } else { |
| std::for_each(mPrimaryFrameRates.rbegin(), mPrimaryFrameRates.rend(), rankFrameRate); |
| } |
| |
| if (!ranking.empty() || !anchorGroupOpt) { |
| return {ranking.begin(), ranking.end()}; |
| } |
| |
| ALOGW("Can't find %s refresh rate by policy with the same mode group" |
| " as the mode group %d", |
| refreshRateOrder == RefreshRateOrder::Ascending ? "min" : "max", anchorGroupOpt.value()); |
| |
| constexpr std::optional<int> kNoAnchorGroup = std::nullopt; |
| return rankFrameRates(kNoAnchorGroup, refreshRateOrder, preferredDisplayModeOpt); |
| } |
| |
| FrameRateMode RefreshRateSelector::getActiveMode() const { |
| std::lock_guard lock(mLock); |
| return getActiveModeLocked(); |
| } |
| |
| const FrameRateMode& RefreshRateSelector::getActiveModeLocked() const { |
| return *mActiveModeOpt; |
| } |
| |
| void RefreshRateSelector::setActiveMode(DisplayModeId modeId, Fps renderFrameRate) { |
| std::lock_guard lock(mLock); |
| |
| // Invalidate the cached invocation to getRankedFrameRates. This forces |
| // the refresh rate to be recomputed on the next call to getRankedFrameRates. |
| mGetRankedFrameRatesCache.reset(); |
| |
| const auto activeModeOpt = mDisplayModes.get(modeId); |
| LOG_ALWAYS_FATAL_IF(!activeModeOpt); |
| |
| mActiveModeOpt.emplace(FrameRateMode{renderFrameRate, ftl::as_non_null(activeModeOpt->get())}); |
| } |
| |
| RefreshRateSelector::RefreshRateSelector(DisplayModes modes, DisplayModeId activeModeId, |
| Config config) |
| : mKnownFrameRates(constructKnownFrameRates(modes)), mConfig(config) { |
| initializeIdleTimer(); |
| FTL_FAKE_GUARD(kMainThreadContext, updateDisplayModes(std::move(modes), activeModeId)); |
| } |
| |
| void RefreshRateSelector::initializeIdleTimer() { |
| if (mConfig.idleTimerTimeout > 0ms) { |
| mIdleTimer.emplace( |
| "IdleTimer", mConfig.idleTimerTimeout, |
| [this] { |
| std::scoped_lock lock(mIdleTimerCallbacksMutex); |
| if (const auto callbacks = getIdleTimerCallbacks()) { |
| callbacks->onReset(); |
| } |
| }, |
| [this] { |
| std::scoped_lock lock(mIdleTimerCallbacksMutex); |
| if (const auto callbacks = getIdleTimerCallbacks()) { |
| callbacks->onExpired(); |
| } |
| }); |
| } |
| } |
| |
| void RefreshRateSelector::updateDisplayModes(DisplayModes modes, DisplayModeId activeModeId) { |
| std::lock_guard lock(mLock); |
| |
| // Invalidate the cached invocation to getRankedFrameRates. This forces |
| // the refresh rate to be recomputed on the next call to getRankedFrameRates. |
| mGetRankedFrameRatesCache.reset(); |
| |
| mDisplayModes = std::move(modes); |
| const auto activeModeOpt = mDisplayModes.get(activeModeId); |
| LOG_ALWAYS_FATAL_IF(!activeModeOpt); |
| mActiveModeOpt = |
| FrameRateMode{activeModeOpt->get()->getFps(), ftl::as_non_null(activeModeOpt->get())}; |
| |
| const auto sortedModes = sortByRefreshRate(mDisplayModes); |
| mMinRefreshRateModeIt = sortedModes.front(); |
| mMaxRefreshRateModeIt = sortedModes.back(); |
| |
| // Reset the policy because the old one may no longer be valid. |
| mDisplayManagerPolicy = {}; |
| mDisplayManagerPolicy.defaultMode = activeModeId; |
| |
| mFrameRateOverrideConfig = [&] { |
| switch (mConfig.enableFrameRateOverride) { |
| case Config::FrameRateOverride::Disabled: |
| case Config::FrameRateOverride::AppOverride: |
| case Config::FrameRateOverride::Enabled: |
| return mConfig.enableFrameRateOverride; |
| case Config::FrameRateOverride::AppOverrideNativeRefreshRates: |
| return shouldEnableFrameRateOverride(sortedModes) |
| ? Config::FrameRateOverride::AppOverrideNativeRefreshRates |
| : Config::FrameRateOverride::Disabled; |
| } |
| }(); |
| |
| if (mConfig.enableFrameRateOverride == |
| Config::FrameRateOverride::AppOverrideNativeRefreshRates) { |
| for (const auto& [_, mode] : mDisplayModes) { |
| mAppOverrideNativeRefreshRates.try_emplace(mode->getFps(), ftl::unit); |
| } |
| } |
| |
| constructAvailableRefreshRates(); |
| } |
| |
| bool RefreshRateSelector::isPolicyValidLocked(const Policy& policy) const { |
| // defaultMode must be a valid mode, and within the given refresh rate range. |
| if (const auto mode = mDisplayModes.get(policy.defaultMode)) { |
| if (!policy.primaryRanges.physical.includes(mode->get()->getFps())) { |
| ALOGE("Default mode is not in the primary range."); |
| return false; |
| } |
| } else { |
| ALOGE("Default mode is not found."); |
| return false; |
| } |
| |
| const auto& primaryRanges = policy.primaryRanges; |
| const auto& appRequestRanges = policy.appRequestRanges; |
| ALOGE_IF(!appRequestRanges.physical.includes(primaryRanges.physical), |
| "Physical range is invalid: primary: %s appRequest: %s", |
| to_string(primaryRanges.physical).c_str(), |
| to_string(appRequestRanges.physical).c_str()); |
| ALOGE_IF(!appRequestRanges.render.includes(primaryRanges.render), |
| "Render range is invalid: primary: %s appRequest: %s", |
| to_string(primaryRanges.render).c_str(), to_string(appRequestRanges.render).c_str()); |
| |
| return primaryRanges.valid() && appRequestRanges.valid(); |
| } |
| |
| auto RefreshRateSelector::setPolicy(const PolicyVariant& policy) -> SetPolicyResult { |
| Policy oldPolicy; |
| PhysicalDisplayId displayId; |
| { |
| std::lock_guard lock(mLock); |
| oldPolicy = *getCurrentPolicyLocked(); |
| |
| const bool valid = ftl::match( |
| policy, |
| [this](const auto& policy) { |
| ftl::FakeGuard guard(mLock); |
| if (!isPolicyValidLocked(policy)) { |
| ALOGE("Invalid policy: %s", policy.toString().c_str()); |
| return false; |
| } |
| |
| using T = std::decay_t<decltype(policy)>; |
| |
| if constexpr (std::is_same_v<T, DisplayManagerPolicy>) { |
| mDisplayManagerPolicy = policy; |
| } else { |
| static_assert(std::is_same_v<T, OverridePolicy>); |
| mOverridePolicy = policy; |
| } |
| return true; |
| }, |
| [this](NoOverridePolicy) { |
| ftl::FakeGuard guard(mLock); |
| mOverridePolicy.reset(); |
| return true; |
| }); |
| |
| if (!valid) { |
| return SetPolicyResult::Invalid; |
| } |
| |
| mGetRankedFrameRatesCache.reset(); |
| |
| if (*getCurrentPolicyLocked() == oldPolicy) { |
| return SetPolicyResult::Unchanged; |
| } |
| constructAvailableRefreshRates(); |
| |
| displayId = getActiveModeLocked().modePtr->getPhysicalDisplayId(); |
| } |
| |
| const unsigned numModeChanges = std::exchange(mNumModeSwitchesInPolicy, 0u); |
| |
| ALOGI("Display %s policy changed\n" |
| "Previous: %s\n" |
| "Current: %s\n" |
| "%u mode changes were performed under the previous policy", |
| to_string(displayId).c_str(), oldPolicy.toString().c_str(), toString(policy).c_str(), |
| numModeChanges); |
| |
| return SetPolicyResult::Changed; |
| } |
| |
| auto RefreshRateSelector::getCurrentPolicyLocked() const -> const Policy* { |
| return mOverridePolicy ? &mOverridePolicy.value() : &mDisplayManagerPolicy; |
| } |
| |
| auto RefreshRateSelector::getCurrentPolicy() const -> Policy { |
| std::lock_guard lock(mLock); |
| return *getCurrentPolicyLocked(); |
| } |
| |
| auto RefreshRateSelector::getDisplayManagerPolicy() const -> Policy { |
| std::lock_guard lock(mLock); |
| return mDisplayManagerPolicy; |
| } |
| |
| bool RefreshRateSelector::isModeAllowed(const FrameRateMode& mode) const { |
| std::lock_guard lock(mLock); |
| return std::find(mAppRequestFrameRates.begin(), mAppRequestFrameRates.end(), mode) != |
| mAppRequestFrameRates.end(); |
| } |
| |
| void RefreshRateSelector::constructAvailableRefreshRates() { |
| // Filter modes based on current policy and sort on refresh rate. |
| const Policy* policy = getCurrentPolicyLocked(); |
| ALOGV("%s: %s ", __func__, policy->toString().c_str()); |
| |
| const auto& defaultMode = mDisplayModes.get(policy->defaultMode)->get(); |
| |
| const auto filterRefreshRates = [&](const FpsRanges& ranges, |
| const char* rangeName) REQUIRES(mLock) { |
| const auto filterModes = [&](const DisplayMode& mode) { |
| return mode.getResolution() == defaultMode->getResolution() && |
| mode.getDpi() == defaultMode->getDpi() && |
| (policy->allowGroupSwitching || mode.getGroup() == defaultMode->getGroup()) && |
| ranges.physical.includes(mode.getFps()) && |
| (supportsFrameRateOverride() || ranges.render.includes(mode.getFps())); |
| }; |
| |
| const auto frameRateModes = createFrameRateModes(filterModes, ranges.render); |
| LOG_ALWAYS_FATAL_IF(frameRateModes.empty(), |
| "No matching frame rate modes for %s range. policy: %s", rangeName, |
| policy->toString().c_str()); |
| |
| const auto stringifyModes = [&] { |
| std::string str; |
| for (const auto& frameRateMode : frameRateModes) { |
| str += to_string(frameRateMode) + " "; |
| } |
| return str; |
| }; |
| ALOGV("%s render rates: %s", rangeName, stringifyModes().c_str()); |
| |
| return frameRateModes; |
| }; |
| |
| mPrimaryFrameRates = filterRefreshRates(policy->primaryRanges, "primary"); |
| mAppRequestFrameRates = filterRefreshRates(policy->appRequestRanges, "app request"); |
| } |
| |
| Fps RefreshRateSelector::findClosestKnownFrameRate(Fps frameRate) const { |
| using namespace fps_approx_ops; |
| |
| if (frameRate <= mKnownFrameRates.front()) { |
| return mKnownFrameRates.front(); |
| } |
| |
| if (frameRate >= mKnownFrameRates.back()) { |
| return mKnownFrameRates.back(); |
| } |
| |
| auto lowerBound = std::lower_bound(mKnownFrameRates.begin(), mKnownFrameRates.end(), frameRate, |
| isStrictlyLess); |
| |
| const auto distance1 = std::abs(frameRate.getValue() - lowerBound->getValue()); |
| const auto distance2 = std::abs(frameRate.getValue() - std::prev(lowerBound)->getValue()); |
| return distance1 < distance2 ? *lowerBound : *std::prev(lowerBound); |
| } |
| |
| auto RefreshRateSelector::getIdleTimerAction() const -> KernelIdleTimerAction { |
| std::lock_guard lock(mLock); |
| |
| const Fps deviceMinFps = mMinRefreshRateModeIt->second->getFps(); |
| const DisplayModePtr& minByPolicy = getMinRefreshRateByPolicyLocked(); |
| |
| // Kernel idle timer will set the refresh rate to the device min. If DisplayManager says that |
| // the min allowed refresh rate is higher than the device min, we do not want to enable the |
| // timer. |
| if (isStrictlyLess(deviceMinFps, minByPolicy->getFps())) { |
| return KernelIdleTimerAction::TurnOff; |
| } |
| |
| const DisplayModePtr& maxByPolicy = |
| getMaxRefreshRateByPolicyLocked(getActiveModeLocked().modePtr->getGroup()); |
| if (minByPolicy == maxByPolicy) { |
| // Turn on the timer when the min of the primary range is below the device min. |
| if (const Policy* currentPolicy = getCurrentPolicyLocked(); |
| isApproxLess(currentPolicy->primaryRanges.physical.min, deviceMinFps)) { |
| return KernelIdleTimerAction::TurnOn; |
| } |
| return KernelIdleTimerAction::TurnOff; |
| } |
| |
| // Turn on the timer in all other cases. |
| return KernelIdleTimerAction::TurnOn; |
| } |
| |
| int RefreshRateSelector::getFrameRateDivisor(Fps displayRefreshRate, Fps layerFrameRate) { |
| // This calculation needs to be in sync with the java code |
| // in DisplayManagerService.getDisplayInfoForFrameRateOverride |
| |
| // The threshold must be smaller than 0.001 in order to differentiate |
| // between the fractional pairs (e.g. 59.94 and 60). |
| constexpr float kThreshold = 0.0009f; |
| const auto numPeriods = displayRefreshRate.getValue() / layerFrameRate.getValue(); |
| const auto numPeriodsRounded = std::round(numPeriods); |
| if (std::abs(numPeriods - numPeriodsRounded) > kThreshold) { |
| return 0; |
| } |
| |
| return static_cast<int>(numPeriodsRounded); |
| } |
| |
| bool RefreshRateSelector::isFractionalPairOrMultiple(Fps smaller, Fps bigger) { |
| if (isStrictlyLess(bigger, smaller)) { |
| return isFractionalPairOrMultiple(bigger, smaller); |
| } |
| |
| const auto multiplier = std::round(bigger.getValue() / smaller.getValue()); |
| constexpr float kCoef = 1000.f / 1001.f; |
| return isApproxEqual(bigger, Fps::fromValue(smaller.getValue() * multiplier / kCoef)) || |
| isApproxEqual(bigger, Fps::fromValue(smaller.getValue() * multiplier * kCoef)); |
| } |
| |
| void RefreshRateSelector::dump(utils::Dumper& dumper) const { |
| using namespace std::string_view_literals; |
| |
| std::lock_guard lock(mLock); |
| |
| const auto activeMode = getActiveModeLocked(); |
| dumper.dump("activeMode"sv, to_string(activeMode)); |
| |
| dumper.dump("displayModes"sv); |
| { |
| utils::Dumper::Indent indent(dumper); |
| for (const auto& [id, mode] : mDisplayModes) { |
| dumper.dump({}, to_string(*mode)); |
| } |
| } |
| |
| dumper.dump("displayManagerPolicy"sv, mDisplayManagerPolicy.toString()); |
| |
| if (const Policy& currentPolicy = *getCurrentPolicyLocked(); |
| mOverridePolicy && currentPolicy != mDisplayManagerPolicy) { |
| dumper.dump("overridePolicy"sv, currentPolicy.toString()); |
| } |
| |
| dumper.dump("frameRateOverrideConfig"sv, *ftl::enum_name(mFrameRateOverrideConfig)); |
| |
| dumper.dump("idleTimer"sv); |
| { |
| utils::Dumper::Indent indent(dumper); |
| dumper.dump("interval"sv, mIdleTimer.transform(&OneShotTimer::interval)); |
| dumper.dump("controller"sv, |
| mConfig.kernelIdleTimerController |
| .and_then(&ftl::enum_name<KernelIdleTimerController>) |
| .value_or("Platform"sv)); |
| } |
| } |
| |
| std::chrono::milliseconds RefreshRateSelector::getIdleTimerTimeout() { |
| return mConfig.idleTimerTimeout; |
| } |
| |
| } // namespace android::scheduler |
| |
| // TODO(b/129481165): remove the #pragma below and fix conversion issues |
| #pragma clang diagnostic pop // ignored "-Wextra" |