xref: /hardware/interfaces/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/GraphicsComposerCallback.h

/*
 * Copyright (C) 2017 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 <android/hardware/graphics/composer/2.1/IComposerCallback.h>

#include <mutex>
#include <unordered_set>

namespace android {
namespace hardware {
namespace graphics {
namespace composer {
namespace V2_1 {
namespace vts {

// IComposerCallback to be installed with IComposerClient::registerCallback.
class GraphicsComposerCallback : public IComposerCallback {
   public:
    void setVsyncAllowed(bool allowed);

    std::vector<Display> getDisplays() const;

    int getInvalidHotplugCount() const;

    int getInvalidRefreshCount() const;

    int getInvalidVsyncCount() const;

   private:
    Return<void> onHotplug(Display display, Connection connection) override;
    Return<void> onRefresh(Display display) override;
    Return<void> onVsync(Display display, int64_t) override;

    mutable std::mutex mMutex;
    // the set of all currently connected displays
    std::unordered_set<Display> mDisplays;
    // true only when vsync is enabled
    bool mVsyncAllowed = true;

    // track invalid callbacks
    int mInvalidHotplugCount = 0;
    int mInvalidRefreshCount = 0;
    int mInvalidVsyncCount = 0;
};

}  // namespace vts
}  // namespace V2_1
}  // namespace composer
}  // namespace graphics
}  // namespace hardware
}  // namespace android