text: /*
   * 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.
   */
  
  #define LOG_TAG "drmfb-service"
  
  #include <sched.h>
  #include <android-base/logging.h>
  #include <binder/ProcessState.h>
  #include <hidl/HidlTransportSupport.h>
  #include "DrmComposer.h"
  
  using android::hardware::configureRpcThreadpool;
  using android::hardware::joinRpcThreadpool;
  
  using android::hardware::graphics::composer::V2_1::drmfb::createDrmComposer;
  
  int main() {
      // the conventional HAL might start binder services
      android::ProcessState::initWithDriver("/dev/vndbinder");
      android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
      android::ProcessState::self()->startThreadPool();
  
      // same as SF main thread
      struct sched_param param = {0};
      param.sched_priority = 2;
      if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, &param)) {
          PLOG(ERROR) << "Couldn't set SCHED_FIFO";
      }
  
      configureRpcThreadpool(4, true /* will join */);
  
      auto composer = createDrmComposer();
      if (!composer) {
          LOG(FATAL) << "Failed to initialize HAL";
      }
      if (composer->registerAsService() != android::OK) {
          LOG(FATAL) << "Failed to register Composer HAL";
      }
  
      joinRpcThreadpool();
      return 0;
  }
  