uint16 ScummDiskImage::extractIndex(Common::WriteStream *out) {
int i;
uint16 reslen = 0;
openDisk(1);
if (_game.platform == Common::kPlatformApple2GS) {
File::seek(142080);
} else {
File::seek(0);
}
// skip signature
fileReadUint16LE();
// write expected signature
if (_game.platform == Common::kPlatformApple2GS) {
reslen += write_word(out, 0x0032);
} else {
reslen += write_word(out, 0x0132);
}
// copy object flags
for (i = 0; i < _numGlobalObjects; i++)
reslen += write_byte(out, fileReadByte());
// copy room offsets
for (i = 0; i < _numRooms; i++) {
_roomDisks[i] = fileReadByte();
reslen += write_byte(out, _roomDisks[i]);
}
for (i = 0; i < _numRooms; i++) {
_roomSectors[i] = fileReadByte();
reslen += write_byte(out, _roomSectors[i]);
_roomTracks[i] = fileReadByte();
reslen += write_byte(out, _roomTracks[i]);
}
for (i = 0; i < _numCostumes; i++)
reslen += write_byte(out, fileReadByte());
for (i = 0; i < _numCostumes; i++)
reslen += write_word(out, fileReadUint16LE());
for (i = 0; i < _numScripts; i++)
reslen += write_byte(out, fileReadByte());
for (i = 0; i < _numScripts; i++)
reslen += write_word(out, fileReadUint16LE());
for (i = 0; i < _numSounds; i++)
reslen += write_byte(out, fileReadByte());
for (i = 0; i < _numSounds; i++)
reslen += write_word(out, fileReadUint16LE());
return reslen;
}
bool Cutscene::readFileHeader(CinFileHeader *hdr) {
hdr->mark = fileReadUint32LE(_fp);
hdr->videoFrameSize = fileReadUint32LE(_fp);
hdr->videoFrameWidth = fileReadUint16LE(_fp);
hdr->videoFrameHeight = fileReadUint16LE(_fp);
hdr->soundFreq = fileReadUint32LE(_fp);
hdr->soundBits = fileReadByte(_fp);
hdr->soundStereo = fileReadByte(_fp);
hdr->soundFrameSize = fileReadUint16LE(_fp);
return !fileEof(_fp) && (hdr->mark >> 16) == 0x55AA;
}
bool Cutscene::readFrameHeader(CinFrameHeader *hdr) {
hdr->videoFrameType = fileReadByte(_fp);
hdr->soundFrameType = fileReadByte(_fp);
hdr->palColorsCount = fileReadUint16LE(_fp);
hdr->videoFrameSize = fileReadUint32LE(_fp);
hdr->soundFrameSize = fileReadUint32LE(_fp);
hdr->mark = fileReadUint32LE(_fp);
return !fileEof(_fp) && hdr->mark == 0xAA55AA55;
}
bool ScummDiskImage::open(const Common::String &filename) {
uint16 signature;
// check signature
openDisk(1);
if (_game.platform == Common::kPlatformApple2GS) {
File::seek(142080);
} else {
File::seek(0);
}
signature = fileReadUint16LE();
if (signature != 0x0A31) {
error("ScummDiskImage::open(): signature not found in disk 1");
return false;
}
extractIndex(0); // Fill in resource arrays
if (_game.features & GF_DEMO)
return true;
openDisk(2);
if (_game.platform == Common::kPlatformApple2GS) {
File::seek(143104);
signature = fileReadUint16LE();
if (signature != 0x0032)
error("Error: signature not found in disk 2");
} else {
File::seek(0);
signature = fileReadUint16LE();
if (signature != 0x0132)
error("Error: signature not found in disk 2");
}
return true;
}
uint16 ScummDiskImage::extractResource(Common::WriteStream *out, int res) {
const int AppleSectorOffset[36] = {
0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240, 256,
272, 288, 304, 320, 336, 352, 368,
384, 400, 416, 432, 448, 464,
480, 496, 512, 528, 544, 560
};
const int C64SectorOffset[36] = {
0,
0, 21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, 273, 294, 315, 336,
357, 376, 395, 414, 433, 452, 471,
490, 508, 526, 544, 562, 580,
598, 615, 632, 649, 666
};
int i;
uint16 reslen = 0;
openDisk(_roomDisks[res]);
if (_game.platform == Common::kPlatformApple2GS) {
File::seek((AppleSectorOffset[_roomTracks[res]] + _roomSectors[res]) * 256);
} else {
File::seek((C64SectorOffset[_roomTracks[res]] + _roomSectors[res]) * 256);
}
for (i = 0; i < _resourcesPerFile[res]; i++) {
uint16 len;
do {
// Note: len might be 0xFFFF for padding in zak-c64-german
len = fileReadUint16LE();
reslen += write_word(out, len);
} while (len == 0xFFFF);
for (len -= 2; len > 0; len--)
reslen += write_byte(out, fileReadByte());
}
return reslen;
}