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/*
* Copyright (C) 2015 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.
*/
#ifndef DEVICEINFO_H
#define DEVICEINFO_H
#include <SkImageInfo.h>
#include <android/data_space.h>
#include <mutex>
#include "utils/Macros.h"
namespace android {
namespace uirenderer {
namespace renderthread {
class RenderThread;
}
class DeviceInfo {
PREVENT_COPY_AND_ASSIGN(DeviceInfo);
public:
static DeviceInfo* get();
static int32_t getWidth() { return get()->mWidth; }
static int32_t getHeight() { return get()->mHeight; }
// Gets the density in density-independent pixels
static float getDensity() { return sDensity.load(); }
static int64_t getVsyncPeriod() { return get()->mVsyncPeriod; }
static int64_t getCompositorOffset() { return get()->getCompositorOffsetInternal(); }
static int64_t getAppOffset() { return get()->mAppVsyncOffsetNanos; }
// Sets the density in density-independent pixels
static void setDensity(float density) { sDensity.store(density); }
static void setWidth(int32_t width) { get()->mWidth = width; }
static void setHeight(int32_t height) { get()->mHeight = height; }
static void setRefreshRate(float refreshRate) {
get()->mVsyncPeriod = static_cast<int64_t>(1000000000 / refreshRate);
}
static void setPresentationDeadlineNanos(int64_t deadlineNanos) {
get()->mPresentationDeadlineNanos = deadlineNanos;
}
static void setAppVsyncOffsetNanos(int64_t offsetNanos) {
get()->mAppVsyncOffsetNanos = offsetNanos;
}
static void setWideColorDataspace(ADataSpace dataspace);
// this value is only valid after the GPU has been initialized and there is a valid graphics
// context or if you are using the HWUI_NULL_GPU
int maxTextureSize() const;
sk_sp<SkColorSpace> getWideColorSpace() const { return mWideColorSpace; }
SkColorType getWideColorType() {
static std::once_flag kFlag;
// lazily update display info from SF here, so that the call is performed by RenderThread.
std::call_once(kFlag, [&, this]() { updateDisplayInfo(); });
return mWideColorType;
}
// This method should be called whenever the display refresh rate changes.
void onRefreshRateChanged(int64_t vsyncPeriod);
private:
friend class renderthread::RenderThread;
static void setMaxTextureSize(int maxTextureSize);
void updateDisplayInfo();
int64_t getCompositorOffsetInternal() const {
// Assume that SF takes around a millisecond to latch buffers after
// waking up
return mVsyncPeriod - (mPresentationDeadlineNanos - 1000000);
}
DeviceInfo();
~DeviceInfo() = default;
int mMaxTextureSize;
sk_sp<SkColorSpace> mWideColorSpace = SkColorSpace::MakeSRGB();
SkColorType mWideColorType = SkColorType::kN32_SkColorType;
int mDisplaysSize = 0;
int mPhysicalDisplayIndex = -1;
int32_t mWidth = 1080;
int32_t mHeight = 1920;
int64_t mVsyncPeriod = 16666666;
// Magically corresponds with an sf offset of 0 for a sane default.
int64_t mPresentationDeadlineNanos = 17666666;
int64_t mAppVsyncOffsetNanos = 0;
// Density is not retrieved from the ADisplay apis, so this may potentially
// be called on multiple threads.
// Unit is density-independent pixels
static std::atomic<float> sDensity;
};
} /* namespace uirenderer */
} /* namespace android */
#endif /* DEVICEINFO_H */
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