Method Detect

pcsx2/CDVD/InputIsoFile.cpp:272–313

based on florin's CDVDbin detection code :) Parameter: Returns true if the image is valid/known/supported, or false if not (type == ISOTYPE_ILLEGAL).

//
// Returns true if the image is valid/known/supported, or false if not (type == ISOTYPE_ILLEGAL).
bool InputIsoFile::Detect(bool readType)
{
	m_type = ISOTYPE_ILLEGAL;

	// First sanity check: no sane CD image has less than 16 sectors, since that's what
	// we need simply to contain a TOC.  So if the file size is not large enough to
	// accommodate that, it is NOT a CD image --->

	int sectors = m_reader->GetBlockCount();

	if (sectors < 17)
		return false;

	m_blocks = 17;

	if (tryIsoType(2048, 0, 24))
		return true; // ISO 2048
	if (tryIsoType(2336, 0, 16))
		return true; // RAW 2336
	if (tryIsoType(2352, 0, 0))
		return true; // RAW 2352
	if (tryIsoType(2448, 0, 0))
		return true; // RAWQ 2448

	if (tryIsoType(2048, 150 * 2048, 24))
		return true; // NERO ISO 2048
	if (tryIsoType(2352, 150 * 2048, 0))
		return true; // NERO RAW 2352
	if (tryIsoType(2448, 150 * 2048, 0))
		return true; // NERO RAWQ 2448

	m_offset = 0;
	m_blocksize = CD_FRAMESIZE_RAW;
	m_blockofs = 0;
	m_type = ISOTYPE_AUDIO;

	m_reader->SetDataOffset(m_offset);
	m_reader->SetBlockSize(m_blocksize);

	//BUG: This also detects a memory-card-file as a valid Audio-CD ISO... -avih
	return true;
}