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