reference_frontend/core/core.cpp

/*
 Copyright 2020-2021 Brad Parker

   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.
*/

#include <iostream>
#include <QTimer>
#include <QMainWindow>

#include <QFileInfo>
#include <QtEndian>
#include <QDir>
#include <QDateTime>
#include <QtGlobal>

#include "core.h"
#include "../common/input.h"
#include "../common/video.h"

extern "C" {
#include <stdio.h>
}

Core::Core(QObject *parent) :
  QObject(parent)
  ,m_pixFmt(RETRO_PIXEL_FORMAT_0RGB1555)
  ,m_info()
  ,m_gameInfo()
  ,m_imgData(nullptr)
  ,m_width(0)
  ,m_height(0)
  ,m_pitch(0)
  ,m_isAudioStreamReady(false)
  ,m_isMuted(false)
  ,m_isPaused(false)
  ,m_variablesChanged(false)
  ,m_isHWRender(false)
  ,m_noGame(false)
  ,m_bottomLeftOrigin(false)
  ,m_img()
  ,m_options()
  ,m_controllerInfo()
  ,m_library()
  ,m_isLoaded(false)
  ,m_isInited(false)
  ,m_isResolved(false)
  ,m_isRunning(false)
  ,m_doRender(false)
  ,m_path()
  ,m_pathArray()
  ,m_pathData(nullptr)
  ,m_extractedPath()
  ,m_extractedPathArray()
  ,m_extractedPathData(nullptr)
  ,m_saveStateData(nullptr)
  ,m_saveStateDataSize(0)
  ,m_elapsedTimer()
  ,m_timer()
  ,m_tempDir()
  ,m_gameData(nullptr)
  ,m_gameDataSize(0)
  ,m_dataDir()
  ,m_savePath()
  ,m_statePath()
  ,m_systemPath()

  /* pointers to functions that are exported by the core which we will call later */
  ,m_retroInit(nullptr)
  ,m_retroDeinit(nullptr)
  ,m_retroRun(nullptr)
  ,m_retroReset(nullptr)
  ,m_retroLoadGame(nullptr)
  ,m_retroUnloadGame(nullptr)
  ,m_retroGetMemoryData(nullptr)
  ,m_retroGetMemorySize(nullptr)
  ,m_retroSerialize(nullptr)
  ,m_retroSerializeSize(nullptr)
  ,m_retroUnserialize(nullptr)
  ,m_retroGetSystemAVInfo(nullptr)
  ,m_retroGetSystemInfo(nullptr)
  ,m_retroSetControllerPortDevice(nullptr)
  ,m_retroHWContextReset(nullptr)

  /* used to tell the core where our callbacks are */
  ,m_retroSetEnvironment(nullptr)
  ,m_retroSetVideoRefresh(nullptr)
  ,m_retroSetAudioSample(nullptr)
  ,m_retroSetAudioSampleBatch(nullptr)
  ,m_retroSetInputPoll(nullptr)
  ,m_retroSetInputState(nullptr)
{
  QDir d;
  d.mkdir("data");
  d.mkdir("data/saves");
  d.mkdir("data/states");
  d.mkdir("data/system");

  QDir saveDir("data/saves");
  QDir stateDir("data/states");
  QDir systemDir("data/system");

  QByteArray saveDirArray = saveDir.absolutePath().toUtf8();
  QByteArray stateDirArray = stateDir.absolutePath().toUtf8();
  QByteArray systemDirArray = systemDir.absolutePath().toUtf8();

  const char *saveDirData = saveDirArray.constData();
  const char *stateDirData = stateDirArray.constData();
  const char *systemDirData = systemDirArray.constData();

  strncpy(m_savePath, saveDirData, qMin(saveDirArray.size(), static_cast<int>(sizeof(m_savePath) - 1)));
  strncpy(m_statePath, stateDirData, qMin(stateDirArray.size(), static_cast<int>(sizeof(m_statePath) - 1)));
  strncpy(m_systemPath, systemDirData, qMin(systemDirArray.size(), static_cast<int>(sizeof(m_systemPath) - 1)));

  m_dataDir = QDir("data");

  m_timer.setTimerType(Qt::PreciseTimer);
  m_timer.setSingleShot(true);

  connect(this, &Core::gotFrameSwap, this, &Core::onGotFrameSwap, Qt::DirectConnection);
}

Core::~Core() {
  std::cout << "core dtor" << std::endl;

  unload();

  if(m_saveStateData)
    delete[] m_saveStateData;
}

Core* Core::instance() {
  static Core instance;
  return &instance;
}

bool Core::isLoaded() const {
  return m_isLoaded;
}

bool Core::isResolved() const {
  return m_isResolved;
}

bool Core::isRunning() const {
  return m_isRunning;
}

QMap<QString, Core::CoreOption>& Core::getCoreOptions() {
  return m_options;
}

void Core::setVariablesChanged(bool changed) {
  m_variablesChanged = changed;
}