Method Open2

pcsx2/CDVD/ChdFileReader.cpp:367–401

}

bool ChdFileReader::Open2(std::string filename, Error* error)
{
	Close2();

	m_filename = std::move(filename);

	auto fp = FileSystem::OpenManagedSharedCFile(m_filename.c_str(), "rb", FileSystem::FileShareMode::DenyWrite, error);
	if (!fp)
		return false;

	ChdFile = OpenCHD(m_filename, std::move(fp), error, 0);
	if (!ChdFile)
		return false;

	const chd_header* chd_header = chd_get_header(ChdFile);
	hunk_size = chd_header->hunkbytes;
	// CHD likes to use full 2448 byte blocks, but keeps the +24 offset of source ISOs
	// The rest of PCSX2 likes to use 2448 byte buffers, which can't fit that so trim blocks instead
	m_internalBlockSize = chd_header->unitbytes;

	// The file size in the header is incorrect, each track gets padded to a multiple of 4 frames.
	// (see chdman.cpp from MAME). Instead, we pull the real frame count from the TOC.
	u64 total_frames;
	if (ParseTOC(&total_frames))
	{
		file_size = total_frames * static_cast<u64>(chd_header->unitbytes);
	}
	else
	{
		Console.Warning("Failed to parse CHD TOC, file size may be incorrect.");
		file_size = static_cast<u64>(chd_header->unitbytes) * chd_header->unitcount;
	}

	return true;
}

bool ChdFileReader::Precache2(ProgressCallback* progress, Error* error)
{