diff options
Diffstat (limited to 'engines/sci/graphics/view.cpp')
-rw-r--r-- | engines/sci/graphics/view.cpp | 216 |
1 files changed, 111 insertions, 105 deletions
diff --git a/engines/sci/graphics/view.cpp b/engines/sci/graphics/view.cpp index 9e6854e3b9..27fad19eca 100644 --- a/engines/sci/graphics/view.cpp +++ b/engines/sci/graphics/view.cpp @@ -370,22 +370,120 @@ void GfxView::getCelScaledRect(int16 loopNo, int16 celNo, int16 x, int16 y, int1 outRect.top = outRect.bottom - scaledHeight; } +void unpackCelData(byte *inBuffer, byte *celBitmap, byte clearColor, int pixelCount, int rlePos, int literalPos, ViewType viewType, uint16 width, bool isMacSci11ViewData) { + byte *outPtr = celBitmap; + byte curByte, runLength; + byte *rlePtr = inBuffer + rlePos; + byte *literalPtr = inBuffer + literalPos; + int pixelNr = 0; + + memset(celBitmap, clearColor, pixelCount); + + if (!literalPos) { + // decompression for data that has only one combined stream + switch (viewType) { + case kViewEga: + while (pixelNr < pixelCount) { + curByte = *rlePtr++; + runLength = curByte >> 4; + memset(outPtr + pixelNr, curByte & 0x0F, MIN<uint16>(runLength, pixelCount - pixelNr)); + pixelNr += runLength; + } + break; + case kViewAmiga: + while (pixelNr < pixelCount) { + curByte = *rlePtr++; + if (curByte & 0x07) { // fill with color + runLength = curByte & 0x07; + curByte = curByte >> 3; + while (runLength-- && pixelNr < pixelCount) { + outPtr[pixelNr++] = curByte; + } + } else { // fill with transparent + runLength = curByte >> 3; + pixelNr += runLength; + } + } + break; + case kViewVga: + case kViewVga11: + while (pixelNr < pixelCount) { + curByte = *rlePtr++; + runLength = curByte & 0x3F; + switch (curByte & 0xC0) { + case 0: // copy bytes as-is + while (runLength-- && pixelNr < pixelCount) + outPtr[pixelNr++] = *rlePtr++; + break; + case 0x40: // copy bytes as is (In copy case, runLength can go upto 127 i.e. pixel & 0x40). Fixes bug #3135872. + runLength += 64; + break; + case 0x80: // fill with color + memset(outPtr + pixelNr, *rlePtr++, MIN<uint16>(runLength, pixelCount - pixelNr)); + pixelNr += runLength; + break; + case 0xC0: // fill with transparent + pixelNr += runLength; + break; + } + } + break; + default: + error("Unsupported picture viewtype"); + } + } else { + if (isMacSci11ViewData) { + // KQ6/Freddy Pharkas use byte lengths, all others use uint16 + // The SCI devs must have realized that a max of 255 pixels wide + // was not very good for 320 or 640 width games. + bool hasByteLengths = (g_sci->getGameId() == GID_KQ6 || g_sci->getGameId() == GID_FREDDYPHARKAS); + + // compression for SCI1.1+ Mac + while (pixelNr < pixelCount) { + uint32 pixelLine = pixelNr; + + if (hasByteLengths) { + pixelNr += *rlePtr++; + runLength = *rlePtr++; + } else { + pixelNr += READ_BE_UINT16(rlePtr); + runLength = READ_BE_UINT16(rlePtr + 2); + rlePtr += 4; + } + + while (runLength-- && pixelNr < pixelCount) + outPtr[pixelNr++] = *literalPtr++; + + pixelNr = pixelLine + width; + } + } + // decompression for data that has two separate streams (probably SCI 1.1 view) + while (pixelNr < pixelCount) { + curByte = *rlePtr++; + runLength = curByte & 0x3F; + switch (curByte & 0xC0) { + case 0: // copy bytes as-is + while (runLength-- && pixelNr < pixelCount) + outPtr[pixelNr++] = *literalPtr++; + break; + case 0x80: // fill with color + memset(outPtr + pixelNr, *literalPtr++, MIN<uint16>(runLength, pixelCount - pixelNr)); + pixelNr += runLength; + break; + case 0xC0: // fill with transparent + pixelNr += runLength; + break; + } + } + } +} + void GfxView::unpackCel(int16 loopNo, int16 celNo, byte *outPtr, uint32 pixelCount) { const CelInfo *celInfo = getCelInfo(loopNo, celNo); - byte *rlePtr; - byte *literalPtr; - uint32 pixelNo = 0, runLength; - byte pixel; if (celInfo->offsetEGA) { // decompression for EGA views - literalPtr = _resourceData + _loop[loopNo].cel[celNo].offsetEGA; - while (pixelNo < pixelCount) { - pixel = *literalPtr++; - runLength = pixel >> 4; - memset(outPtr + pixelNo, pixel & 0x0F, MIN<uint32>(runLength, pixelCount - pixelNo)); - pixelNo += runLength; - } + unpackCelData(_resourceData, outPtr, 0, pixelCount, celInfo->offsetEGA, 0, _resMan->getViewType(), celInfo->width, false); } else { // We fill the buffer with transparent pixels, so that we can later skip // over pixels to automatically have them transparent @@ -408,100 +506,8 @@ void GfxView::unpackCel(int16 loopNo, int16 celNo, byte *outPtr, uint32 pixelCou clearColor = 0; } - memset(outPtr, clearColor, pixelCount); - - rlePtr = _resourceData + celInfo->offsetRLE; - if (!celInfo->offsetLiteral) { // no additional literal data - if (_resMan->getViewType() == kViewAmiga) { - // decompression for amiga views - while (pixelNo < pixelCount) { - pixel = *rlePtr++; - if (pixel & 0x07) { // fill with color - runLength = pixel & 0x07; - pixel = pixel >> 3; - while (runLength-- && pixelNo < pixelCount) { - outPtr[pixelNo++] = pixel; - } - } else { // fill with transparent - runLength = pixel >> 3; - pixelNo += runLength; - } - } - } else { - // decompression for data that has just one combined stream - while (pixelNo < pixelCount) { - pixel = *rlePtr++; - runLength = pixel & 0x3F; - switch (pixel & 0xC0) { - case 0x40: // copy bytes as is (In copy case, runLength can go upto 127 i.e. pixel & 0x40) - runLength += 64; - case 0x00: // copy bytes as-is - while (runLength-- && pixelNo < pixelCount) - outPtr[pixelNo++] = *rlePtr++; - break; - case 0x80: // fill with color - memset(outPtr + pixelNo, *rlePtr++, MIN<uint32>(runLength, pixelCount - pixelNo)); - pixelNo += runLength; - break; - case 0xC0: // fill with transparent - pixelNo += runLength; - break; - } - } - } - } else { - literalPtr = _resourceData + celInfo->offsetLiteral; - if (celInfo->offsetRLE) { - if (g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() == SCI_VERSION_1_1) { - // KQ6/Freddy Pharkas use byte lengths, all others use uint16 - // The SCI devs must have realized that a max of 255 pixels wide - // was not very good for 320 or 640 width games. - bool hasByteLengths = (g_sci->getGameId() == GID_KQ6 || g_sci->getGameId() == GID_FREDDYPHARKAS); - - // compression for SCI1.1+ Mac - while (pixelNo < pixelCount) { - uint32 pixelLine = pixelNo; - - if (hasByteLengths) { - pixelNo += *rlePtr++; - runLength = *rlePtr++; - } else { - pixelNo += READ_BE_UINT16(rlePtr); - runLength = READ_BE_UINT16(rlePtr + 2); - rlePtr += 4; - } - - while (runLength-- && pixelNo < pixelCount) - outPtr[pixelNo++] = *literalPtr++; - - pixelNo = pixelLine + celInfo->width; - } - } else { - // decompression for data that has separate rle and literal streams - while (pixelNo < pixelCount) { - pixel = *rlePtr++; - runLength = pixel & 0x3F; - switch (pixel & 0xC0) { - case 0: // copy bytes as-is - while (runLength-- && pixelNo < pixelCount) - outPtr[pixelNo++] = *literalPtr++; - break; - case 0x80: // fill with color - memset(outPtr + pixelNo, *literalPtr++, MIN<uint32>(runLength, pixelCount - pixelNo)); - pixelNo += runLength; - break; - case 0xC0: // fill with transparent - pixelNo += runLength; - break; - } - } - } - } else { - // literal stream only, so no compression - memcpy(outPtr, literalPtr, pixelCount); - pixelNo = pixelCount; - } - } + bool isMacSci11ViewData = g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() == SCI_VERSION_1_1; + unpackCelData(_resourceData, outPtr, clearColor, pixelCount, celInfo->offsetRLE, celInfo->offsetLiteral, _resMan->getViewType(), celInfo->width, isMacSci11ViewData); // Swap 0 and 0xff pixels for Mac SCI1.1+ games (see above) if (g_sci->getPlatform() == Common::kPlatformMacintosh && getSciVersion() >= SCI_VERSION_1_1) { |