const HunkPalette::EntryHeader HunkPalette::getEntryHeader() const {
const byte *const data = getPalPointer();
EntryHeader header;
header.startColor = data[10];
header.numColors = READ_SCI11ENDIAN_UINT16(data + 14);
header.used = data[16];
header.sharedUsed = data[17];
header.version = READ_SCI11ENDIAN_UINT32(data + kEntryVersionOffset);
return header;
}
void HunkPalette::setVersion(const uint32 version) const {
if (_numPalettes != _data[10]) {
error("Invalid HunkPalette");
}
if (_numPalettes) {
const EntryHeader header = getEntryHeader();
if (header.version != _version) {
error("Invalid HunkPalette");
}
WRITE_SCI11ENDIAN_UINT32(getPalPointer() + kEntryVersionOffset, version);
_version = version;
}
}
void HunkPalette::setVersion(const uint32 version) const {
if (_numPalettes != _data.getUint8At(kNumPaletteEntriesOffset)) {
error("Invalid HunkPalette");
}
if (_numPalettes) {
const EntryHeader header = getEntryHeader();
if (header.version != _version) {
error("Invalid HunkPalette");
}
byte *palette = const_cast<byte *>(getPalPointer().getUnsafeDataAt(kEntryVersionOffset, sizeof(uint32)));
WRITE_SCI11ENDIAN_UINT32(palette, version);
_version = version;
}
}
const Palette HunkPalette::toPalette() const {
Palette outPalette;
for (int16 i = 0; i < ARRAYSIZE(outPalette.colors); ++i) {
outPalette.colors[i].used = false;
outPalette.colors[i].r = 0;
outPalette.colors[i].g = 0;
outPalette.colors[i].b = 0;
}
if (_numPalettes) {
const EntryHeader header = getEntryHeader();
const uint32 dataSize = header.numColors * (/* RGB */ 3 + (header.sharedUsed ? 0 : 1));
const byte *data = getPalPointer().getUnsafeDataAt(kEntryHeaderSize, dataSize);
const int16 end = header.startColor + header.numColors;
assert(end <= 256);
if (header.sharedUsed) {
for (int16 i = header.startColor; i < end; ++i) {
outPalette.colors[i].used = header.used;
outPalette.colors[i].r = *data++;
outPalette.colors[i].g = *data++;
outPalette.colors[i].b = *data++;
}
} else {
for (int16 i = header.startColor; i < end; ++i) {
outPalette.colors[i].used = *data++;
outPalette.colors[i].r = *data++;
outPalette.colors[i].g = *data++;
outPalette.colors[i].b = *data++;
}
}
}
return outPalette;
}