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