Method lookupHash

pcsx2/GameDatabase.cpp:1242–1320

}

const GameDatabase::HashDatabaseEntry* GameDatabase::lookupHash(
	const TrackHash* tracks, size_t num_tracks, bool* tracks_matched, std::string* match_error)
{
	loadHashDatabase();

	if (num_tracks == 0)
	{
		*match_error = TRANSLATE_STR("GameDatabase", "No tracks provided.");
		std::memset(tracks_matched, 0, sizeof(bool) * num_tracks);
		return nullptr;
	}

	// match the first track, for DVDs this will be all there is anyway
	const auto data_iter = s_track_hash_to_entry_map.find(tracks[0]);
	if (data_iter == s_track_hash_to_entry_map.end())
	{
		*match_error = fmt::format(TRANSLATE_FS("GameDatabase", "Hash {} is not in database."), tracks[0].toString());
		std::memset(tracks_matched, 0, sizeof(bool) * num_tracks);
		return nullptr;
	}

	// make sure they're not missing the data track
	const GameDatabase::HashDatabaseEntry* candidate = &s_hash_database[data_iter->second];
	if (getTrackIndex(candidate->tracks.data(), candidate->tracks.size(), tracks[0]) != 0)
	{
		*match_error = TRANSLATE_STR("GameDatabase", "Data track number does not match data track in database.");
		std::memset(tracks_matched, 0, sizeof(bool) * num_tracks);
		return nullptr;
	}

	// first track is okay!
	tracks_matched[0] = true;
	match_error->clear();

	// now check any audio tracks...
	bool all_okay = true;
	for (size_t track = 1; track < num_tracks; track++)
	{
		const auto audio_iter = s_track_hash_to_entry_map.find(tracks[track]);
		if (audio_iter != s_track_hash_to_entry_map.end())
		{
			fmt::format_to(std::back_inserter(*match_error),
				TRANSLATE_FS("GameDatabase", "Track {0} with hash {1} is not found in database.\n"), track + 1,
				tracks[track].toString());
			tracks_matched[track] = false;
			all_okay = false;
			continue;
		}

		// same game?
		if (audio_iter->second != data_iter->second)
		{
			fmt::format_to(std::back_inserter(*match_error),
				TRANSLATE_FS("GameDatabase", "Track {0} with hash {1} is for a different game ({2}).\n"), track + 1,
				tracks[track].toString(), s_hash_database[audio_iter->second].name);
			tracks_matched[track] = false;
			all_okay = false;
			continue;