187 lines
6.1 KiB
C++
187 lines
6.1 KiB
C++
/*
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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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#pragma once
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#include <cstddef>
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#include <memory>
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#include <android-base/stringprintf.h>
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#include <android/configuration.h>
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#include <ftl/small_map.h>
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#include <ui/DisplayId.h>
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#include <ui/DisplayMode.h>
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#include <ui/Size.h>
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#include <utils/Timers.h>
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#include <scheduler/Fps.h>
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#include "DisplayHardware/Hal.h"
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#include "Scheduler/StrongTyping.h"
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namespace android {
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namespace hal = android::hardware::graphics::composer::hal;
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class DisplayMode;
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using DisplayModePtr = std::shared_ptr<const DisplayMode>;
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// Prevent confusion with fps_approx_ops on the underlying Fps.
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bool operator<(const DisplayModePtr&, const DisplayModePtr&) = delete;
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bool operator>(const DisplayModePtr&, const DisplayModePtr&) = delete;
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bool operator<=(const DisplayModePtr&, const DisplayModePtr&) = delete;
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bool operator>=(const DisplayModePtr&, const DisplayModePtr&) = delete;
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using DisplayModeId = StrongTyping<ui::DisplayModeId, struct DisplayModeIdTag, Compare>;
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using DisplayModes = ftl::SmallMap<DisplayModeId, DisplayModePtr, 3>;
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using DisplayModeIterator = DisplayModes::const_iterator;
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class DisplayMode {
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public:
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class Builder {
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public:
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explicit Builder(hal::HWConfigId id) : mDisplayMode(new DisplayMode(id)) {}
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DisplayModePtr build() {
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return std::const_pointer_cast<const DisplayMode>(std::move(mDisplayMode));
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}
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Builder& setId(DisplayModeId id) {
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mDisplayMode->mId = id;
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return *this;
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}
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Builder& setPhysicalDisplayId(PhysicalDisplayId id) {
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mDisplayMode->mPhysicalDisplayId = id;
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return *this;
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}
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Builder& setResolution(ui::Size resolution) {
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mDisplayMode->mResolution = resolution;
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return *this;
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}
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Builder& setVsyncPeriod(nsecs_t vsyncPeriod) {
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mDisplayMode->mFps = Fps::fromPeriodNsecs(vsyncPeriod);
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return *this;
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}
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Builder& setDpiX(int32_t dpiX) {
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if (dpiX == -1) {
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mDisplayMode->mDpi.x = getDefaultDensity();
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} else {
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mDisplayMode->mDpi.x = dpiX / 1000.f;
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}
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return *this;
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}
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Builder& setDpiY(int32_t dpiY) {
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if (dpiY == -1) {
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mDisplayMode->mDpi.y = getDefaultDensity();
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} else {
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mDisplayMode->mDpi.y = dpiY / 1000.f;
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}
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return *this;
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}
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Builder& setGroup(int32_t group) {
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mDisplayMode->mGroup = group;
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return *this;
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}
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private:
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float getDefaultDensity() {
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// Default density is based on TVs: 1080p displays get XHIGH density, lower-
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// resolution displays get TV density. Maybe eventually we'll need to update
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// it for 4k displays, though hopefully those will just report accurate DPI
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// information to begin with. This is also used for virtual displays and
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// older HWC implementations, so be careful about orientation.
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if (std::max(mDisplayMode->getWidth(), mDisplayMode->getHeight()) >= 1080) {
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return ACONFIGURATION_DENSITY_XHIGH;
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} else {
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return ACONFIGURATION_DENSITY_TV;
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}
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}
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std::shared_ptr<DisplayMode> mDisplayMode;
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};
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DisplayModeId getId() const { return mId; }
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hal::HWConfigId getHwcId() const { return mHwcId; }
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PhysicalDisplayId getPhysicalDisplayId() const { return mPhysicalDisplayId; }
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ui::Size getResolution() const { return mResolution; }
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int32_t getWidth() const { return mResolution.getWidth(); }
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int32_t getHeight() const { return mResolution.getHeight(); }
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Fps getFps() const { return mFps; }
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nsecs_t getVsyncPeriod() const { return mFps.getPeriodNsecs(); }
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struct Dpi {
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float x = -1;
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float y = -1;
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bool operator==(Dpi other) const { return x == other.x && y == other.y; }
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};
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Dpi getDpi() const { return mDpi; }
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// Switches between modes in the same group are seamless, i.e.
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// without visual interruptions such as a black screen.
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int32_t getGroup() const { return mGroup; }
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private:
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explicit DisplayMode(hal::HWConfigId id) : mHwcId(id) {}
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const hal::HWConfigId mHwcId;
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DisplayModeId mId;
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PhysicalDisplayId mPhysicalDisplayId;
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ui::Size mResolution;
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Fps mFps;
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Dpi mDpi;
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int32_t mGroup = -1;
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};
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inline bool equalsExceptDisplayModeId(const DisplayMode& lhs, const DisplayMode& rhs) {
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return lhs.getHwcId() == rhs.getHwcId() && lhs.getResolution() == rhs.getResolution() &&
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lhs.getVsyncPeriod() == rhs.getVsyncPeriod() && lhs.getDpi() == rhs.getDpi() &&
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lhs.getGroup() == rhs.getGroup();
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}
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inline std::string to_string(const DisplayMode& mode) {
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return base::StringPrintf("{id=%d, hwcId=%d, resolution=%dx%d, refreshRate=%s, "
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"dpi=%.2fx%.2f, group=%d}",
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mode.getId().value(), mode.getHwcId(), mode.getWidth(),
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mode.getHeight(), to_string(mode.getFps()).c_str(), mode.getDpi().x,
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mode.getDpi().y, mode.getGroup());
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}
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template <typename... DisplayModePtrs>
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inline DisplayModes makeModes(const DisplayModePtrs&... modePtrs) {
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DisplayModes modes;
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// Note: The omission of std::move(modePtrs) is intentional, because order of evaluation for
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// arguments is unspecified.
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(modes.try_emplace(modePtrs->getId(), modePtrs), ...);
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return modes;
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}
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} // namespace android
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