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/*
* Copyright 2020 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 <cstddef>
#include <memory>
#include <android-base/stringprintf.h>
#include <android/configuration.h>
#include <ftl/small_map.h>
#include <ui/DisplayId.h>
#include <ui/DisplayMode.h>
#include <ui/Size.h>
#include <utils/Timers.h>
#include <scheduler/Fps.h>
#include <common/FlagManager.h>
#include "DisplayHardware/Hal.h"
#include "Scheduler/StrongTyping.h"
namespace android {
namespace hal = android::hardware::graphics::composer::hal;
class DisplayMode;
using DisplayModePtr = std::shared_ptr<const DisplayMode>;
// Prevent confusion with fps_approx_ops on the underlying Fps.
bool operator<(const DisplayModePtr&, const DisplayModePtr&) = delete;
bool operator>(const DisplayModePtr&, const DisplayModePtr&) = delete;
bool operator<=(const DisplayModePtr&, const DisplayModePtr&) = delete;
bool operator>=(const DisplayModePtr&, const DisplayModePtr&) = delete;
using DisplayModeId = StrongTyping<ui::DisplayModeId, struct DisplayModeIdTag, Compare>;
using DisplayModes = ftl::SmallMap<DisplayModeId, DisplayModePtr, 3>;
using DisplayModeIterator = DisplayModes::const_iterator;
class DisplayMode {
public:
class Builder {
public:
explicit Builder(hal::HWConfigId id) : mDisplayMode(new DisplayMode(id)) {}
DisplayModePtr build() {
return std::const_pointer_cast<const DisplayMode>(std::move(mDisplayMode));
}
Builder& setId(DisplayModeId id) {
mDisplayMode->mId = id;
return *this;
}
Builder& setPhysicalDisplayId(PhysicalDisplayId id) {
mDisplayMode->mPhysicalDisplayId = id;
return *this;
}
Builder& setResolution(ui::Size resolution) {
mDisplayMode->mResolution = resolution;
return *this;
}
Builder& setVsyncPeriod(nsecs_t vsyncPeriod) {
mDisplayMode->mVsyncRate = Fps::fromPeriodNsecs(vsyncPeriod);
return *this;
}
Builder& setVrrConfig(std::optional<hal::VrrConfig> vrrConfig) {
mDisplayMode->mVrrConfig = std::move(vrrConfig);
return *this;
}
Builder& setDpiX(float dpiX) {
if (dpiX == -1.f) {
mDisplayMode->mDpi.x = getDefaultDensity();
} else {
mDisplayMode->mDpi.x = dpiX;
}
return *this;
}
Builder& setDpiY(float dpiY) {
if (dpiY == -1.f) {
mDisplayMode->mDpi.y = getDefaultDensity();
} else {
mDisplayMode->mDpi.y = dpiY;
}
return *this;
}
Builder& setGroup(int32_t group) {
mDisplayMode->mGroup = group;
return *this;
}
private:
float getDefaultDensity() {
// Default density is based on TVs: 1080p displays get XHIGH density, lower-
// resolution displays get TV density. Maybe eventually we'll need to update
// it for 4k displays, though hopefully those will just report accurate DPI
// information to begin with. This is also used for virtual displays and
// older HWC implementations, so be careful about orientation.
if (std::max(mDisplayMode->getWidth(), mDisplayMode->getHeight()) >= 1080) {
return ACONFIGURATION_DENSITY_XHIGH;
} else {
return ACONFIGURATION_DENSITY_TV;
}
}
std::shared_ptr<DisplayMode> mDisplayMode;
};
DisplayModeId getId() const { return mId; }
hal::HWConfigId getHwcId() const { return mHwcId; }
PhysicalDisplayId getPhysicalDisplayId() const { return mPhysicalDisplayId; }
ui::Size getResolution() const { return mResolution; }
int32_t getWidth() const { return mResolution.getWidth(); }
int32_t getHeight() const { return mResolution.getHeight(); }
// Peak refresh rate represents the highest refresh rate that can be used
// for the presentation.
Fps getPeakFps() const {
return FlagManager::getInstance().vrr_config() && mVrrConfig
? Fps::fromPeriodNsecs(mVrrConfig->minFrameIntervalNs)
: mVsyncRate;
}
Fps getVsyncRate() const { return mVsyncRate; }
std::optional<hal::VrrConfig> getVrrConfig() const { return mVrrConfig; }
struct Dpi {
float x = -1;
float y = -1;
bool operator==(Dpi other) const { return x == other.x && y == other.y; }
};
Dpi getDpi() const { return mDpi; }
// Switches between modes in the same group are seamless, i.e.
// without visual interruptions such as a black screen.
int32_t getGroup() const { return mGroup; }
private:
explicit DisplayMode(hal::HWConfigId id) : mHwcId(id) {}
const hal::HWConfigId mHwcId;
DisplayModeId mId;
PhysicalDisplayId mPhysicalDisplayId;
ui::Size mResolution;
Fps mVsyncRate;
Dpi mDpi;
int32_t mGroup = -1;
std::optional<hal::VrrConfig> mVrrConfig;
};
inline bool equalsExceptDisplayModeId(const DisplayMode& lhs, const DisplayMode& rhs) {
return lhs.getHwcId() == rhs.getHwcId() && lhs.getResolution() == rhs.getResolution() &&
lhs.getVsyncRate().getPeriodNsecs() == rhs.getVsyncRate().getPeriodNsecs() &&
lhs.getDpi() == rhs.getDpi() && lhs.getGroup() == rhs.getGroup();
}
inline std::string to_string(const DisplayMode& mode) {
return base::StringPrintf("{id=%d, hwcId=%d, resolution=%dx%d, vsyncRate=%s, "
"dpi=%.2fx%.2f, group=%d, vrrConfig=%s}",
mode.getId().value(), mode.getHwcId(), mode.getWidth(),
mode.getHeight(), to_string(mode.getVsyncRate()).c_str(),
mode.getDpi().x, mode.getDpi().y, mode.getGroup(),
to_string(mode.getVrrConfig()).c_str());
}
template <typename... DisplayModePtrs>
inline DisplayModes makeModes(const DisplayModePtrs&... modePtrs) {
DisplayModes modes;
// Note: The omission of std::move(modePtrs) is intentional, because order of evaluation for
// arguments is unspecified.
(modes.try_emplace(modePtrs->getId(), modePtrs), ...);
return modes;
}
} // namespace android
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