ArchiveType::Certainty ArchiveType_DAT_Sango::isInstance(stream::input_sptr psArchive) const
{
stream::pos lenArchive = psArchive->size();
// TESTED BY: fmt_dat_sango_isinstance_c01
if (lenArchive < DAT_FAT_ENTRY_LEN) return DefinitelyNo; // too short
uint32_t offEndFAT;
psArchive->seekg(0, stream::start);
psArchive >> u32le(offEndFAT);
// TESTED BY: fmt_dat_sango_isinstance_c02
if (offEndFAT > lenArchive) return DefinitelyNo;
uint32_t offNext = 4; // in case of no files
for (unsigned int offset = 4; offset < offEndFAT; offset += 4) {
psArchive >> u32le(offNext);
// TESTED BY: fmt_dat_sango_isinstance_c03
if (offNext > lenArchive) return DefinitelyNo;
}
// Last offset must equal file size
// TESTED BY: fmt_dat_sango_isinstance_c04
if (offNext != lenArchive) return DefinitelyNo;
// TESTED BY: fmt_dat_sango_isinstance_c00
return DefinitelyYes;
}
MapType::Certainty MapType_Hocus::isInstance(stream::input_sptr psMap) const
{
stream::pos lenMap = psMap->size();
// TESTED BY: fmt_map_hocus_isinstance_c01
if (lenMap != 14400) return MapType::DefinitelyNo; // wrong size
// TESTED BY: fmt_map_hocus_isinstance_c00
return MapType::PossiblyYes;
}
TilesetType_HarryCHR::Certainty TilesetType_HarryCHR::isInstance(
stream::input_sptr psTileset) const
{
stream::pos len = psTileset->size();
// TESTED BY: tls_harry_chr_isinstance_c01
if (len != CHR_WIDTH * CHR_HEIGHT * CHR_NUM_TILES) return DefinitelyNo; // wrong size
// TESTED BY: tls_harry_chr_isinstance_c00
return PossiblyYes;
}
TilesetType_CComic2::Certainty TilesetType_CComic2::isInstance(stream::input_sptr psGraphics) const
{
stream::pos len = psGraphics->size();
if (len > 65535) return DefinitelyNo; // file too large (probably)
psGraphics->seekg(0, stream::start);
uint16_t num;
for (int i = 0; i < 3; i++) {
psGraphics >> u16le(num);
if (num > 512) return DefinitelyNo; // too many tiles (probably)
}
return Unsure;
}
MusicPtr MusicType_INS_AdLib::read(stream::input_sptr input, SuppData& suppData) const
{
stream::len lenFile = input->size();
input->seekg(0, stream::start);
MusicPtr music(new Music());
music->patches.reset(new PatchBank());
int op;
bool wavesel;
switch (lenFile) {
case 54:
op = 1;
wavesel = true;
break;
case 78:
case 80:
op = 2;
wavesel = true;
break;
default:
std::cout << "[ins-adlib] Unknown format variant: length=" << lenFile
<< std::endl;
if (lenFile < 74) op = 1; else op = 2;
wavesel = false;
break;
}
uint16_t unknown;
input >> u16le(unknown);
OPLPatchPtr oplPatch(new OPLPatch());
readAdLibOperator<uint16_t>(input, &oplPatch->m, &oplPatch->feedback, &oplPatch->connection);
if (op > 1) {
readAdLibOperator<uint16_t>(input, &oplPatch->c, NULL, NULL);
}
std::string title;
input >> nullPadded(title, INS_TITLE_LEN);
if (!title.empty()) music->metadata[Metadata::Title] = title;
if (wavesel) {
readAdLibWaveSel<uint16_t>(input, &oplPatch->m);
if (op > 1) {
readAdLibWaveSel<uint16_t>(input, &oplPatch->c);
}
}
music->patches->push_back(oplPatch);
return music;
}
ArchiveType::Certainty ArchiveType_EXE_CCaves::isInstance(stream::input_sptr psArchive) const
{
stream::pos lenArchive = psArchive->size();
if (lenArchive == 191984) {
// TESTED BY: TODO fixed_exe_ccaves_isinstance_c00
psArchive->seekg(0x1E00, stream::start);
char buffer[8];
psArchive->read(buffer, 8);
// Unfortunately no version strings, so check some data I
// selected at random...
if (strncmp(buffer, "\x55\x89\xE5\x8B\x46\x06\xBA\xA0", 8) != 0)
return DefinitelyNo;
return DefinitelyYes;
}
// TESTED BY: TODO (generic)
return DefinitelyNo;
}
TilesetType_MonsterBashSprite::Certainty TilesetType_MonsterBashSprite::isInstance(
stream::input_sptr psGraphics) const
{
stream::len lenRemaining = psGraphics->size();
psGraphics->seekg(0, stream::start);
// TESTED BY: tls_bash_sprite_isinstance_c02
if (lenRemaining < MB_MIN_FILE_LEN) return DefinitelyNo;
uint8_t sig;
psGraphics >> u8(sig);
lenRemaining--;
// TESTED BY: tls_bash_sprite_isinstance_c03
if (sig != 0xFF) return DefinitelyNo;
while (lenRemaining >= MB_SPR_EFAT_ENTRY_LEN) {
uint16_t lenBlock;
psGraphics >> u16le(lenBlock);
lenRemaining -= 2;
// TESTED BY: tls_bash_sprite_isinstance_c04
if (lenBlock < MB_MIN_IMAGE_LEN) return DefinitelyNo;
// TESTED BY: tls_bash_sprite_isinstance_c05
if (lenBlock > lenRemaining) return DefinitelyNo;
psGraphics->seekg(lenBlock - 1, stream::cur);
uint8_t lastByte;
psGraphics >> u8(lastByte);
// TESTED BY: tls_bash_sprite_isinstance_c06
if (lastByte != 0x00) return DefinitelyNo;
lenRemaining -= lenBlock;
}
// TESTED BY: tls_bash_sprite_isinstance_c00
// TESTED BY: tls_bash_sprite_isinstance_c01
return DefinitelyYes;
}
TilesetType_Zone66::Certainty TilesetType_Zone66::isInstance(
stream::input_sptr psTileset) const
{
stream::pos len = psTileset->size();
// TESTED BY: tls_zone66_isinstance_c04
if (len < Z66_FIRST_TILE_OFFSET) return DefinitelyNo; // too short
psTileset->seekg(0, stream::start);
uint32_t numFiles;
psTileset >> u32le(numFiles);
if ((numFiles == 0) && (len > 8)) return DefinitelyNo; // invalid empty file
uint32_t offset, lastOffset = 0;
for (unsigned int i = 0; i < numFiles; i++) {
psTileset >> u32le(offset);
// The first file always starts at offset 0.
// TESTED BY: tls_zone66_isinstance_c01
if ((i == 0) && (offset != 0)) return DefinitelyNo;
// Make sure the offsets are increasing, otherwise we'd get a negative
// file size (or the file has been tweaked to make opening difficult, but
// then there's the -f option to gametls for that.)
// TESTED BY: tls_zone66_isinstance_c02
if (offset < lastOffset) return DefinitelyNo;
// Make sure the tile is contained within the file
// TESTED BY: tls_zone66_isinstance_c03
if ((numFiles+1) * 4 + offset > len) return DefinitelyNo;
lastOffset = offset;
}
// TESTED BY: tls_zone66_isinstance_c00
return DefinitelyYes;
}
MusicType::Certainty MusicType_INS_AdLib::isInstance(stream::input_sptr psMusic) const
{
stream::len lenFile = psMusic->size();
psMusic->seekg(0, stream::start);
// Unknown length
// TESTED BY: ins_ins_adlib_isinstance_c01
if (
(lenFile != 54)
&& (lenFile != 78)
&& (lenFile != 80)
) return MusicType::DefinitelyNo;
for (unsigned int i = 0; i < 14; i++) {
uint16_t next;
psMusic >> u16le(next);
// Out of range value
// TESTED BY: ins_ins_adlib_isinstance_c02
if (next > 255) return MusicType::DefinitelyNo;
}
// TESTED BY: ins_ins_adlib_isinstance_c00
return MusicType::PossiblyYes;
}
TilesetType_CComic::Certainty TilesetType_CComic::isInstance(stream::input_sptr psGraphics) const
{
stream::pos len = psGraphics->size();
if (len % 128 == 4) return PossiblyYes;
return DefinitelyNo;
}
CComicSpriteType::Certainty CComicSpriteType::isInstance(stream::input_sptr psGraphics) const
{
stream::pos len = psGraphics->size();
if (len % 160 == 0) return PossiblyYes;
return DefinitelyNo;
}