composer/service.cpp

/*
 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *      notice, this list of conditions and the following disclaimer.
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 *      with the distribution.
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 *      from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 */
#include <hidl/LegacySupport.h>
#include "QtiComposer.h"

using android::ProcessState;
using android::sp;
using android::hardware::configureRpcThreadpool;
using android::hardware::joinRpcThreadpool;
using android::hardware::graphics::composer::V2_3::IComposer;
using vendor::qti::hardware::display::composer::V3_0::IQtiComposer;
using vendor::qti::hardware::display::composer::V3_0::implementation::QtiComposer;

int main(int, char **) {
  // TODO(user): double-check for SCHED_FIFO logic
  // the conventional HAL might start binder services
  ProcessState::initWithDriver("/dev/vndbinder");
  sp<ProcessState> ps(ProcessState::self());
  ps->setThreadPoolMaxThreadCount(4);
  ps->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) != 0) {
    ALOGE("Couldn't set SCHED_FIFO: %d", errno);
  }

  sp<IQtiComposer> composer = QtiComposer::initialize();
  if (composer == nullptr) {
    ALOGE("Cannot initialize composer");
    return -EINVAL;
  }

  configureRpcThreadpool(4, true /*callerWillJoin*/);
  if (composer->registerAsService() != android::OK) {
    ALOGE("Cannot register QTI composer service");
    return -EINVAL;
  }

  ALOGI("Initialized qti-composer");
  joinRpcThreadpool();
  return 0;
}