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/*
* Copyright 2018 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.
*/
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wconversion"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include "DispSyncSource.h"
#include <android-base/stringprintf.h>
#include <utils/Trace.h>
#include <mutex>
#include "DispSync.h"
#include "EventThread.h"
namespace android {
using base::StringAppendF;
DispSyncSource::DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync,
const char* name)
: mName(name),
mValue(base::StringPrintf("VSYNC-%s", name), 0),
mTraceVsync(traceVsync),
mVsyncOnLabel(base::StringPrintf("VsyncOn-%s", name)),
mDispSync(dispSync),
mPhaseOffset(base::StringPrintf("VsyncOffset-%s", name), phaseOffset) {}
void DispSyncSource::setVSyncEnabled(bool enable) {
std::lock_guard lock(mVsyncMutex);
if (enable) {
status_t err = mDispSync->addEventListener(mName, mPhaseOffset,
static_cast<DispSync::Callback*>(this),
mLastCallbackTime);
if (err != NO_ERROR) {
ALOGE("error registering vsync callback: %s (%d)", strerror(-err), err);
}
// ATRACE_INT(mVsyncOnLabel.c_str(), 1);
} else {
status_t err = mDispSync->removeEventListener(static_cast<DispSync::Callback*>(this),
&mLastCallbackTime);
if (err != NO_ERROR) {
ALOGE("error unregistering vsync callback: %s (%d)", strerror(-err), err);
}
// ATRACE_INT(mVsyncOnLabel.c_str(), 0);
}
mEnabled = enable;
}
void DispSyncSource::setCallback(VSyncSource::Callback* callback) {
std::lock_guard lock(mCallbackMutex);
mCallback = callback;
}
void DispSyncSource::setPhaseOffset(nsecs_t phaseOffset) {
std::lock_guard lock(mVsyncMutex);
const nsecs_t period = mDispSync->getPeriod();
// Normalize phaseOffset to [-period, period)
const int numPeriods = phaseOffset / period;
phaseOffset -= numPeriods * period;
if (mPhaseOffset == phaseOffset) {
return;
}
mPhaseOffset = phaseOffset;
// If we're not enabled, we don't need to mess with the listeners
if (!mEnabled) {
return;
}
status_t err =
mDispSync->changePhaseOffset(static_cast<DispSync::Callback*>(this), mPhaseOffset);
if (err != NO_ERROR) {
ALOGE("error changing vsync offset: %s (%d)", strerror(-err), err);
}
}
void DispSyncSource::onDispSyncEvent(nsecs_t when, nsecs_t expectedVSyncTimestamp) {
VSyncSource::Callback* callback;
{
std::lock_guard lock(mCallbackMutex);
callback = mCallback;
}
if (mTraceVsync) {
mValue = (mValue + 1) % 2;
}
if (callback != nullptr) {
callback->onVSyncEvent(when, expectedVSyncTimestamp);
}
}
void DispSyncSource::dump(std::string& result) const {
std::lock_guard lock(mVsyncMutex);
StringAppendF(&result, "DispSyncSource: %s(%s)\n", mName, mEnabled ? "enabled" : "disabled");
mDispSync->dump(result);
}
} // namespace android
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic pop // ignored "-Wconversion"
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