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/*
* Copyright (C) 2011 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 ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H
#define ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/RefBase.h>
#include <binder/IInterface.h>
namespace android {
// ----------------------------------------------------------------------------
class BitTube;
class IDisplayEventConnection : public IInterface
{
public:
DECLARE_META_INTERFACE(DisplayEventConnection);
/*
* getDataChannel() returns a BitTube where to receive the events from
*/
virtual sp<BitTube> getDataChannel() const = 0;
/*
* setVsyncRate() sets the vsync event delivery rate. A value of
* 1 returns every vsync events. A value of 2 returns every other events,
* etc... a value of 0 returns no event unless requestNextVsync() has
* been called.
*/
virtual void setVsyncRate(uint32_t count) = 0;
/*
* requestNextVsync() schedules the next vsync event. It has no effect
* if the vsync rate is > 0.
*/
virtual void requestNextVsync() = 0; // asynchronous
};
// ----------------------------------------------------------------------------
class BnDisplayEventConnection : public BnInterface<IDisplayEventConnection>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H
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