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/*
* 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 ATRACE_TAG ATRACE_TAG_GRAPHICS
#define LOG_TAG "SamplingTest"
#include <chrono>
#include <thread>
#include <binder/IPCThreadState.h>
#include <binder/ProcessState.h>
#include <gui/IRegionSamplingListener.h>
#include <gui/ISurfaceComposer.h>
#include <gui/SurfaceComposerClient.h>
#include <gui/SurfaceControl.h>
#include <private/gui/ComposerService.h>
#include <utils/Trace.h>
using namespace std::chrono_literals;
namespace android {
class Button : public BnRegionSamplingListener {
public:
Button(const char* name, const Rect& samplingArea) {
sp<SurfaceComposerClient> client = new SurfaceComposerClient;
mButton = client->createSurface(String8(name), 0, 0, PIXEL_FORMAT_RGBA_8888,
ISurfaceComposerClient::eFXSurfaceEffect);
const int32_t width = samplingArea.getWidth();
const int32_t height = samplingArea.getHeight();
SurfaceComposerClient::Transaction{}
.setLayer(mButton, 0x7fffffff)
.setCrop(mButton, {0, 0, width - 2 * BUTTON_PADDING, height - 2 * BUTTON_PADDING})
.setPosition(mButton, samplingArea.left + BUTTON_PADDING,
samplingArea.top + BUTTON_PADDING)
.setColor(mButton, half3{1, 1, 1})
.show(mButton)
.apply();
mButtonBlend = client->createSurface(String8(name) + "Blend", 0, 0, PIXEL_FORMAT_RGBA_8888,
ISurfaceComposerClient::eFXSurfaceEffect);
SurfaceComposerClient::Transaction{}
.setLayer(mButtonBlend, 0x7ffffffe)
.setCrop(mButtonBlend,
{0, 0, width - 2 * SAMPLE_AREA_PADDING, height - 2 * SAMPLE_AREA_PADDING})
.setPosition(mButtonBlend, samplingArea.left + SAMPLE_AREA_PADDING,
samplingArea.top + SAMPLE_AREA_PADDING)
.setColor(mButtonBlend, half3{1, 1, 1})
.setAlpha(mButtonBlend, 0.2)
.show(mButtonBlend)
.apply(true);
const bool HIGHLIGHT_SAMPLING_AREA = false;
if (HIGHLIGHT_SAMPLING_AREA) {
mSamplingArea =
client->createSurface(String8("SamplingArea"), 0, 0, PIXEL_FORMAT_RGBA_8888,
ISurfaceComposerClient::eFXSurfaceEffect);
SurfaceComposerClient::Transaction{}
.setLayer(mSamplingArea, 0x7ffffffd)
.setCrop(mSamplingArea, {0, 0, 100, 32})
.setPosition(mSamplingArea, 490, 1606)
.setColor(mSamplingArea, half3{0, 1, 0})
.setAlpha(mSamplingArea, 0.1)
.show(mSamplingArea)
.apply();
}
}
sp<IBinder> getStopLayerHandle() { return mButtonBlend->getHandle(); }
private:
static const int32_t BLEND_WIDTH = 2;
static const int32_t SAMPLE_AREA_PADDING = 8;
static const int32_t BUTTON_PADDING = BLEND_WIDTH + SAMPLE_AREA_PADDING;
void setColor(float color) {
const float complement = std::fmod(color + 0.5f, 1.0f);
SurfaceComposerClient::Transaction{}
.setColor(mButton, half3{complement, complement, complement})
.setColor(mButtonBlend, half3{color, color, color})
.apply();
}
void onSampleCollected(float medianLuma) override {
ATRACE_CALL();
setColor(medianLuma);
}
sp<SurfaceComposerClient> mClient;
sp<SurfaceControl> mButton;
sp<SurfaceControl> mButtonBlend;
sp<SurfaceControl> mSamplingArea;
};
} // namespace android
using namespace android;
int main(int, const char**) {
const Rect homeButtonArea{490, 1606, 590, 1654};
sp<android::Button> homeButton = new android::Button("HomeButton", homeButtonArea);
const Rect backButtonArea{200, 1606, 248, 1654};
sp<android::Button> backButton = new android::Button("BackButton", backButtonArea);
sp<ISurfaceComposer> composer = ComposerService::getComposerService();
composer->addRegionSamplingListener(homeButtonArea, homeButton->getStopLayerHandle(),
homeButton);
composer->addRegionSamplingListener(backButtonArea, backButton->getStopLayerHandle(),
backButton);
ProcessState::self()->startThreadPool();
IPCThreadState::self()->joinThreadPool();
return 0;
}
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