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Diffstat (limited to 'engines/parallaction/iff.cpp')
| -rw-r--r-- | engines/parallaction/iff.cpp | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/engines/parallaction/iff.cpp b/engines/parallaction/iff.cpp deleted file mode 100644 index 024af5b6a7..0000000000 --- a/engines/parallaction/iff.cpp +++ /dev/null @@ -1,186 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - */ - - -#include "common/iff_container.h" -#include "common/stream.h" -#include "common/util.h" -#include "parallaction/iff.h" - -namespace Parallaction { - - -void IFFParser::setInputStream(Common::ReadStream *stream) { - assert(stream); - _formChunk.setInputStream(stream); - _chunk.setInputStream(stream); - - _formChunk.readHeader(); - if (_formChunk.id != ID_FORM) { - error("IFFParser input is not a FORM type IFF file"); - } - _formSize = _formChunk.size; - _formType = _formChunk.readUint32BE(); -} - -uint32 IFFParser::getFORMSize() const { - return _formSize; -} - -Common::IFF_ID IFFParser::getFORMType() const { - return _formType; -} - -void IFFParser::parse(IFFCallback &callback) { - bool stop; - do { - _chunk.feed(); - _formChunk.incBytesRead(_chunk.size); - - if (_formChunk.hasReadAll()) { - break; - } - - _formChunk.incBytesRead(8); - _chunk.readHeader(); - - // invoke the callback - Common::SubReadStream stream(&_chunk, _chunk.size); - IFFChunk chunk(_chunk.id, _chunk.size, &stream); - stop = callback(chunk); - - // eats up all the remaining data in the chunk - while (!stream.eos()) { - stream.readByte(); - } - - - } while (!stop); -} - - - -void ILBMDecoder::loadHeader(Common::ReadStream *stream) { - assert(stream); - stream->read(&_header, sizeof(_header)); - _header.width = FROM_BE_16(_header.width); - _header.height = FROM_BE_16(_header.height); - _header.x = FROM_BE_16(_header.x); - _header.y = FROM_BE_16(_header.y); - _header.transparentColor = FROM_BE_16(_header.transparentColor); - _header.pageWidth = FROM_BE_16(_header.pageWidth); - _header.pageHeight = FROM_BE_16(_header.pageHeight); -} - -void ILBMDecoder::loadBitmap(uint32 mode, byte *buffer, Common::ReadStream *stream) { - assert(stream); - uint32 numPlanes = MIN(mode & ILBM_UNPACK_PLANES, (uint32)_header.depth); - assert(numPlanes == 1 || numPlanes == 2 || numPlanes == 3 || numPlanes == 4 || numPlanes == 5 || numPlanes == 8); - - bool packPixels = (mode & ILBM_PACK_PLANES) != 0; - if (numPlanes != 1 && numPlanes != 2 && numPlanes != 4) { - packPixels = false; - } - - uint32 outPitch = _header.width; - if (packPixels) { - outPitch /= (8 / numPlanes); - } - byte *out = buffer; - - switch (_header.pack) { - case 1: { // PackBits compressed bitmap - Graphics::PackBitsReadStream packStream(*stream); - - // setup a buffer to hold enough data to build a line in the output - uint32 scanlineWidth = ((_header.width + 15)/16) << 1; - byte *scanline = new byte[scanlineWidth * _header.depth]; - - for (uint i = 0; i < _header.height; ++i) { - byte *s = scanline; - for (uint32 j = 0; j < _header.depth; ++j) { - packStream.read(s, scanlineWidth); - s += scanlineWidth; - } - - planarToChunky(out, outPitch, scanline, scanlineWidth, numPlanes, packPixels); - out += outPitch; - } - - delete []scanline; - break; - } - - default: - // implement other compression types here! - error("only RLE compressed ILBM files are supported"); - break; - } -} - -void ILBMDecoder::planarToChunky(byte *out, uint32 outPitch, byte *in, uint32 inWidth, uint32 nPlanes, bool packPlanes) { - byte pix, ofs, bit; - byte *s; - - uint32 pixels = outPitch; - if (packPlanes) { - pixels *= (8 / nPlanes); - } - - for (uint32 x = 0; x < pixels; ++x) { - - pix = 0; - ofs = x >> 3; - bit = 0x80 >> (x & 7); - - // first build a pixel by scanning all the usable planes in the input - s = in; - for (uint32 plane = 0; plane < nPlanes; ++plane) { - if (s[ofs] & bit) { - pix |= (1 << plane); - } - s += inWidth; - } - - - // then output the pixel according to the requested packing - if (!packPlanes) { - out[x] = pix; - } else - if (nPlanes == 1) { - out[x/8] |= (pix << (x & 7)); - } else - if (nPlanes == 2) { - out[x/4] |= (pix << ((x & 3) << 1)); - } else - if (nPlanes == 4) { - out[x/2] |= (pix << ((x & 1) << 2)); - } - } - -} - - -} // End of namespace Parallaction |