ac-decomp/src/JSystem/JKernel/JKRDvdFile.cpp

#include "JSystem/JKernel/JKRDvdFile.h"

JSUList<JKRDvdFile> JKRDvdFile::sDvdList;

JKRDvdFile::JKRDvdFile() : JKRFile(), mLink(this) { this->initiate(); }

/* This method is confirmed to exist, but goes unused in AC. Retrieved from TP debug. */
JKRDvdFile::JKRDvdFile(const char* filename) : JKRFile(), mLink(this) {
  this->initiate();
  this->mFileOpen = this->open(filename);

  if (this->isAvailable()) {
    return;
  }
}

JKRDvdFile::JKRDvdFile(s32 entrynum) : JKRFile(), mLink(this) {
  this->initiate();
  this->mFileOpen = this->open(entrynum);

  if (this->isAvailable()) {
    return;
  }
}

JKRDvdFile::~JKRDvdFile() { this->close(); }

void JKRDvdFile::initiate() {
  /* Reference to self. Used to retrieve reference in the DVDReadAsync
   * DVDCallback func. */
  this->mDvdFileInfo.mFile = this;
  OSInitMutex(&this->mDvdMutex);
  OSInitMutex(&this->mAramMutex);
  OSInitMessageQueue(&this->mDvdMessageQueue, &this->mDvdMessage, 1);
  OSInitMessageQueue(&this->mAramMessageQueue, &this->mAramMessage, 1);
  this->mDvdThread = nullptr;
  this->mAramThread = nullptr;
  this->_58 = 0;
}

/* This method is confirmed to exist, but goes unused in AC. Retrieved from TP debug. */
bool JKRDvdFile::open(const char* filename) {
  if (this->mFileOpen == false) {
    this->mFileOpen = DVDOpen((char*)filename, &this->mDvdFileInfo);
    if (this->mFileOpen) {
      sDvdList.append(&this->mLink);
      DVDGetFileInfoStatus(&this->mDvdFileInfo);
    }
  }

  return this->mFileOpen;
}

bool JKRDvdFile::open(s32 entrynum) {
  if (this->mFileOpen == false) {
    this->mFileOpen = DVDFastOpen(entrynum, &this->mDvdFileInfo);
    if (this->mFileOpen) {
      sDvdList.append(&this->mLink);
      DVDGetFileInfoStatus(&this->mDvdFileInfo);
    }
  }

  return this->mFileOpen;
}

bool JKRDvdFile::close() {
  if (this->mFileOpen) {
    if (DVDClose(&this->mDvdFileInfo)) {
      this->mFileOpen = false;
      return sDvdList.remove(&this->mLink);
    }
    else {
      OSErrorLine(212, "cannot close DVD file\n"); /* JKRDvdFile.cpp line 212 */
    }
  }
}

int JKRDvdFile::readData(void* data, s32 length, s32 ofs) {
  OSLockMutex(&this->mDvdMutex);
  s32 retAddr;

  if (this->mDvdThread != nullptr) {
    OSUnlockMutex(&this->mDvdMutex);
    return -1;
  }
  else {
    this->mDvdThread = OSGetCurrentThread();
    retAddr = -1;
    if (DVDReadAsync(&this->mDvdFileInfo, data, length, ofs,
      JKRDvdFile::doneProcess)) {
      retAddr = this->sync();
    }

    this->mDvdThread = nullptr;
    OSUnlockMutex(&this->mDvdMutex);
  }

  return retAddr;
}

int JKRDvdFile::writeData(const void* data, s32 length, s32 ofs) { return -1; }

s32 JKRDvdFile::sync() {
  OSMessage m;

  OSLockMutex(&this->mDvdMutex);
  OSReceiveMessage(&this->mDvdMessageQueue, &m, OS_MESSAGE_BLOCK);
  this->mDvdThread = nullptr;
  OSUnlockMutex(&this->mDvdMutex);
  return (s32)m;
}

void JKRDvdFile::doneProcess(s32 result, DVDFileInfo* info) {
  OSSendMessage(&static_cast<JKRDvdFileInfo*>(info)->mFile->mDvdMessageQueue,
    (OSMessage)result, OS_MESSAGE_NOBLOCK);
}