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74 lines
2.2 KiB
74 lines
2.2 KiB
6 years ago
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H
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#define ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/RefBase.h>
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#include <binder/IInterface.h>
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namespace android {
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// ----------------------------------------------------------------------------
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class BitTube;
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class IDisplayEventConnection : public IInterface
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{
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public:
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DECLARE_META_INTERFACE(DisplayEventConnection);
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/*
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* getDataChannel() returns a BitTube where to receive the events from
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*/
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virtual sp<BitTube> getDataChannel() const = 0;
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/*
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* setVsyncRate() sets the vsync event delivery rate. A value of
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* 1 returns every vsync events. A value of 2 returns every other events,
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* etc... a value of 0 returns no event unless requestNextVsync() has
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* been called.
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*/
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virtual void setVsyncRate(uint32_t count) = 0;
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/*
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* requestNextVsync() schedules the next vsync event. It has no effect
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* if the vsync rate is > 0.
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*/
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virtual void requestNextVsync() = 0; // asynchronous
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};
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// ----------------------------------------------------------------------------
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class BnDisplayEventConnection : public BnInterface<IDisplayEventConnection>
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{
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public:
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virtual status_t onTransact( uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_GUI_IDISPLAY_EVENT_CONNECTION_H
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