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Diffstat (limited to 'graphics/imagedec.cpp')
| -rw-r--r-- | graphics/imagedec.cpp | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/graphics/imagedec.cpp b/graphics/imagedec.cpp deleted file mode 100644 index 9552f095fa..0000000000 --- a/graphics/imagedec.cpp +++ /dev/null @@ -1,176 +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. - */ - -#include "graphics/imagedec.h" -#include "graphics/pixelformat.h" -#include "graphics/surface.h" - -#include "common/file.h" - -namespace Graphics { -// -// BMP Decoder -// -class BMPDecoder : public ImageDecoder { -public: - BMPDecoder() {} - virtual ~BMPDecoder() {} - - bool decodeable(Common::SeekableReadStream &stream); - Surface *decodeImage(Common::SeekableReadStream &stream, const PixelFormat &format); - - struct BitmapHeader { - uint16 type; - uint32 size; - uint16 res1; - uint16 res2; - uint32 imageOffset; - }; - - struct InfoHeader { - uint32 size; - uint32 width; - uint32 height; - uint16 planes; - uint16 bitsPerPixel; - uint32 compression; - uint32 imageSize; - uint32 pixelsPerMeterX; - uint32 pixelsPerMeterY; - uint32 colorsUsed; - uint32 colorsImportant; - }; -}; - -bool BMPDecoder::decodeable(Common::SeekableReadStream &stream) { - BitmapHeader header; - stream.seek(0); - header.type = stream.readUint16BE(); - header.size = stream.readUint32LE(); - - // TODO: maybe improve this detection - if (header.size == 0 || header.type != 'BM') - return false; - - return true; -} - -Surface *BMPDecoder::decodeImage(Common::SeekableReadStream &stream, const PixelFormat &format) { - if (!decodeable(stream)) { - return 0; - } - - BitmapHeader header; - InfoHeader info; - - stream.seek(0); - header.type = stream.readUint16BE(); - header.size = stream.readUint32LE(); - header.res1 = stream.readUint16LE(); - header.res2 = stream.readUint16LE(); - header.imageOffset = stream.readUint32LE(); - - if (header.size == 0 || header.type != 'BM') { - stream.seek(0); - return 0; - } - - info.size = stream.readUint32LE(); - info.width = stream.readUint32LE(); - info.height = stream.readUint32LE(); - info.planes = stream.readUint16LE(); - info.bitsPerPixel = stream.readUint16LE(); - info.compression = stream.readUint32LE(); - info.imageSize = stream.readUint32LE(); - info.pixelsPerMeterX = stream.readUint32LE(); - info.pixelsPerMeterY = stream.readUint32LE(); - info.colorsUsed = stream.readUint32LE(); - info.colorsImportant = stream.readUint32LE(); - - stream.seek(header.imageOffset); - - if (info.bitsPerPixel != 24) { - stream.seek(0); - return 0; - } - - uint8 r = 0, g = 0, b = 0; - Surface *newSurf = new Surface; - assert(newSurf); - newSurf->create(info.width, info.height, format); - assert(newSurf->pixels); - OverlayColor *curPixel = (OverlayColor *)newSurf->pixels + (newSurf->h-1) * newSurf->w; - int pitchAdd = info.width % 4; - for (int i = 0; i < newSurf->h; ++i) { - for (int i2 = 0; i2 < newSurf->w; ++i2) { - b = stream.readByte(); - g = stream.readByte(); - r = stream.readByte(); - *curPixel = format.RGBToColor(r, g, b); - ++curPixel; - } - stream.seek(pitchAdd, SEEK_CUR); - curPixel -= newSurf->w*2; - } - - stream.seek(0); - return newSurf; -} - -#pragma mark - - -Surface *ImageDecoder::loadFile(const Common::String &name, const PixelFormat &format) { - Surface *newSurf = 0; - - Common::File imageFile; - if (imageFile.open(name)) { - newSurf = loadFile(imageFile, format); - } - - return newSurf; -} - -Surface *ImageDecoder::loadFile(Common::SeekableReadStream &stream, const PixelFormat &format) { - // TODO: implement support for bzipped memory - - // FIXME: this is not a very nice solution but it should work - // for the moment, we should use a different way to get all - // decoders - static BMPDecoder bmpDecoder; - static ImageDecoder *decoderList[] = { - &bmpDecoder, // for uncompressed .BMP files - 0 - }; - - ImageDecoder *decoder = 0; - for (int i = 0; decoderList[i] != 0; ++i) { - if (decoderList[i]->decodeable(stream)) { - decoder = decoderList[i]; - break; - } - } - - if (!decoder) - return 0; - - return decoder->decodeImage(stream, format); -} -} // End of namespace Graphics |