char Video_v1::spriteUncompressor(byte *sprBuf, int16 srcWidth, int16 srcHeight,
int16 x, int16 y, int16 transp, Surface &destDesc) {
byte *memBuffer;
byte *srcPtr;
byte temp;
uint16 sourceLeft;
uint16 cmdVar;
int16 curWidth, curHeight;
int16 offset;
int16 counter2;
int16 bufPos;
int16 strLen;
//_vm->validateVideoMode(destDesc._vidMode);
if (sprBuf[0] != 1)
return 0;
if (sprBuf[1] != 2)
return 0;
if (sprBuf[2] == 2) {
Surface sourceDesc(srcWidth, srcHeight, 1, sprBuf + 3);
destDesc.blit(sourceDesc, 0, 0, srcWidth - 1, srcHeight - 1, x, y, (transp == 0) ? -1 : 0);
return 1;
} else {
memBuffer = new byte[4114];
assert(memBuffer);
srcPtr = sprBuf + 3;
sourceLeft = READ_LE_UINT16(srcPtr);
Pixel destPtr = destDesc.get(x, y);
curWidth = 0;
curHeight = 0;
Pixel linePtr = destPtr;
srcPtr += 4;
for (offset = 0; offset < 4078; offset++)
memBuffer[offset] = 0x20;
cmdVar = 0;
bufPos = 4078;
while (1) {
cmdVar >>= 1;
if ((cmdVar & 0x100) == 0) {
cmdVar = *srcPtr | 0xFF00;
srcPtr++;
}
if ((cmdVar & 1) != 0) {
temp = *srcPtr++;
if ((temp != 0) || (transp == 0))
destPtr.set(temp);
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc.getWidth();
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight)
break;
}
sourceLeft--;
if (sourceLeft == 0)
break;
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
} else {
offset = *srcPtr;
srcPtr++;
offset |= (*srcPtr & 0xF0) << 4;
strLen = (*srcPtr & 0x0F) + 3;
srcPtr++;
for (counter2 = 0; counter2 < strLen; counter2++) {
temp = memBuffer[(offset + counter2) % 4096];
if ((temp != 0) || (transp == 0))
destPtr.set(temp);
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc.getWidth();
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight) {
delete[] memBuffer;
return 1;
}
}
sourceLeft--;
if (sourceLeft == 0) {
delete[] memBuffer;
return 1;
}
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
}
}
}
}
delete[] memBuffer;
return 1;
}
char Video_v2::spriteUncompressor(byte *sprBuf, int16 srcWidth, int16 srcHeight,
int16 x, int16 y, int16 transp, SurfaceDesc &destDesc) {
byte *memBuffer;
byte *srcPtr, *destPtr, *linePtr;
byte temp;
uint32 sourceLeft;
uint16 cmdVar;
int16 curWidth, curHeight;
int16 offset;
int16 counter2;
int16 bufPos;
int16 strLen;
int16 lenCmd;
_vm->validateVideoMode(destDesc._vidMode);
if (sprBuf[0] != 1)
return 0;
if (sprBuf[1] != 2)
return 0;
if (sprBuf[2] == 2) {
SurfaceDesc sourceDesc(0x13, srcWidth, srcHeight, sprBuf + 3);
Video::drawSprite(sourceDesc, destDesc, 0, 0, srcWidth - 1,
srcHeight - 1, x, y, transp);
return 1;
} else if (sprBuf[2] == 1) {
memBuffer = new byte[4370];
assert(memBuffer);
srcPtr = sprBuf + 3;
sourceLeft = READ_LE_UINT32(srcPtr);
destPtr = destDesc.getVidMem() + destDesc.getWidth() * y + x;
curWidth = 0;
curHeight = 0;
linePtr = destPtr;
srcPtr += 4;
if ((READ_LE_UINT16(srcPtr) == 0x1234) && (READ_LE_UINT16(srcPtr + 2) == 0x5678)) {
srcPtr += 4;
bufPos = 273;
lenCmd = 18;
} else {
lenCmd = 100;
bufPos = 4078;
}
memset(memBuffer, 32, bufPos);
cmdVar = 0;
while (1) {
cmdVar >>= 1;
if ((cmdVar & 0x100) == 0) {
cmdVar = *srcPtr | 0xFF00;
srcPtr++;
}
if ((cmdVar & 1) != 0) {
temp = *srcPtr++;
if ((temp != 0) || (transp == 0))
*destPtr = temp;
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc.getWidth();
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight)
break;
}
sourceLeft--;
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
if (sourceLeft == 0)
break;
} else {
offset = *srcPtr++;
offset |= (*srcPtr & 0xF0) << 4;
strLen = (*srcPtr & 0x0F) + 3;
*srcPtr++;
if (strLen == lenCmd)
strLen = *srcPtr++ + 18;
for (counter2 = 0; counter2 < strLen; counter2++) {
temp = memBuffer[(offset + counter2) % 4096];
if ((temp != 0) || (transp == 0))
*destPtr = temp;
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc.getWidth();
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight) {
delete[] memBuffer;
return 1;
}
}
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
}
if (strLen >= ((int32) sourceLeft)) {
delete[] memBuffer;
return 1;
} else
sourceLeft--;
}
}
} else
