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/*
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* Copyright (C) 2015 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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#define LOG_TAG "hwc-drm-compositor-worker"
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#include "drmcompositorworker.h"
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#include "drmdisplaycompositor.h"
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#include "utils/worker.h"
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#include <stdlib.h>
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#include <hardware/hardware.h>
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#include <log/log.h>
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namespace android {
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DrmCompositorWorker::DrmCompositorWorker(DrmDisplayCompositor* compositor)
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: Worker("drm-compositor", HAL_PRIORITY_URGENT_DISPLAY), compositor_(compositor) {}
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DrmCompositorWorker::~DrmCompositorWorker() {}
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int DrmCompositorWorker::Init() {
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bSchedFifoOnce_ = false;
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return InitWorker();
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}
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void DrmCompositorWorker::Routine() {
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int ret;
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// 需要将此线程设置为实时线程，为了让底层调用CPU计时器可以获得更准确的计时
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// 所有平台的提交线程需要设置为实时线程
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if (bSchedFifoOnce_ == false) {
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bSchedFifoOnce_ = true;
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static constexpr int kFifoPriority = 2;
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struct sched_param param = {0};
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int sched_policy;
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sched_policy = SCHED_FIFO;
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param.sched_priority = kFifoPriority;
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if (sched_setscheduler(0, sched_policy, ¶m) != 0) {
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HWC2_LOGE("DrmCompositorWorker set SCHED_FIFO fail!");
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} else {
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HWC2_LOGI("DrmCompositorWorker set SCHED_FIFO success!");
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}
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}
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if (!compositor_->IsSidebandMode() && !compositor_->IsMemcMode()) {
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if (!compositor_->HaveQueuedComposites()) {
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Lock();
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int wait_ret = WaitForSignalOrExitLocked(kWaitTimeOut_);
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Unlock();
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switch (wait_ret) {
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case 0:
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break;
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case -EINTR:
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return;
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//close pre-comp for static screen.
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case -ETIMEDOUT:
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kWaitTimeOut_ = kWaitTimeOut_ * 2 > 500000000LL ? 500000000LL : kWaitTimeOut_ * 2;
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return;
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default:
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ALOGE("Failed to wait for signal, %d", wait_ret);
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return;
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}
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}
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}
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kWaitTimeOut_ = 2000000LL;
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ret = compositor_->Composite();
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if (ret) ALOGE("Failed to composite! %d", ret);
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}
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} // namespace android
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