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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.
*/
#include <stdint.h>
#include <sys/types.h>
#include <gui/IDisplayEventConnection.h>
#include <gui/BitTube.h>
#include <gui/DisplayEventReceiver.h>
#include <utils/Errors.h>
#include "SurfaceFlinger.h"
#include "DisplayEventConnection.h"
#include "EventThread.h"
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
DisplayEventConnection::DisplayEventConnection(
const sp<EventThread>& eventThread)
: mEventThread(eventThread), mChannel(new BitTube())
{
}
DisplayEventConnection::~DisplayEventConnection() {
mEventThread->unregisterDisplayEventConnection(this);
}
void DisplayEventConnection::onFirstRef() {
// NOTE: mEventThread doesn't hold a strong reference on us
mEventThread->registerDisplayEventConnection(this);
}
sp<BitTube> DisplayEventConnection::getDataChannel() const {
return mChannel;
}
void DisplayEventConnection::setVsyncRate(uint32_t count) {
mEventThread->setVsyncRate(count, this);
}
void DisplayEventConnection::requestNextVsync() {
mEventThread->requestNextVsync(this);
}
status_t DisplayEventConnection::postEvent(const DisplayEventReceiver::Event& event)
{
ssize_t size = mChannel->write(&event, sizeof(DisplayEventReceiver::Event));
return size < 0 ? status_t(size) : status_t(NO_ERROR);
}
// ---------------------------------------------------------------------------
}; // namespace android
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