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Diffstat (limited to 'graphics/iff.h')
| -rw-r--r-- | graphics/iff.h | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/graphics/iff.h b/graphics/iff.h deleted file mode 100644 index 4d88148372..0000000000 --- a/graphics/iff.h +++ /dev/null @@ -1,137 +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. - */ - -/* - * Bitmap decoder used in engines: - * - parallaction - * - saga - */ - -#ifndef GRAPHICS_IFF_H -#define GRAPHICS_IFF_H - -#include "common/stream.h" - -namespace Graphics { - -struct Surface; - - -struct BMHD { - uint16 width, height; - uint16 x, y; - byte depth; - byte masking; - byte pack; - byte flags; - uint16 transparentColor; - byte xAspect, yAspect; - uint16 pageWidth, pageHeight; - - BMHD() { - memset(this, 0, sizeof(*this)); - } - - void load(Common::ReadStream *stream); -}; - - -struct ILBMDecoder { - /** - * ILBM header data, necessary for loadBitmap() - */ - Graphics::BMHD _header; - - /** - * Available decoding modes for loadBitmap(). - */ - enum { - ILBM_UNPACK_PLANES = 0xFF, ///< Decode all bitplanes, and map 1 pixel to 1 byte. - ILBM_PACK_PLANES = 0x100, ///< Request unpacking, used as a mask with below options. - - ILBM_1_PLANES = 1, ///< Decode only the first bitplane, don't pack. - ILBM_1_PACK_PLANES = ILBM_1_PLANES | ILBM_PACK_PLANES, ///< Decode only the first bitplane, pack 8 pixels in 1 byte. - ILBM_2_PLANES = 2, ///< Decode first 2 bitplanes, don't pack. - ILBM_2_PACK_PLANES = ILBM_2_PLANES | ILBM_PACK_PLANES, ///< Decode first 2 bitplanes, pack 4 pixels in 1 byte. - ILBM_3_PLANES = 3, ///< Decode first 3 bitplanes, don't pack. - ILBM_4_PLANES = 4, ///< Decode first 4 bitplanes, don't pack. - ILBM_4_PACK_PLANES = ILBM_4_PLANES | ILBM_PACK_PLANES, ///< Decode first 4 bitplanes, pack 2 pixels in 1 byte. - ILBM_5_PLANES = 5, ///< Decode first 5 bitplanes, don't pack. - ILBM_8_PLANES = 8 ///< Decode all 8 bitplanes. - }; - - /** - * Fills the _header member from the given stream. - */ - void loadHeader(Common::ReadStream *stream); - - /** - * Loads and unpacks the ILBM bitmap data from the stream into the buffer. - * The functions assumes the buffer is large enough to contain all data. - * The caller controls how data should be packed by choosing mode from - * the enum above. - */ - void loadBitmap(uint32 mode, byte *buffer, Common::ReadStream *stream); - - /** - * Converts from bitplanar to chunky representation. Intended for internal - * usage, but you can be (ab)use it from client code if you know what you - * are doing. - */ - void planarToChunky(byte *out, uint32 width, byte *in, uint32 planeWidth, uint32 nPlanes, bool packPlanes); -}; - - - -/** - * Handles PBM subtype of IFF FORM files - */ -void decodePBM(Common::ReadStream &input, Surface &surface, byte *colors); - - -/** - * Decode a given PackBits encoded stream. - * - * PackBits is an RLE compression algorithm introduced by Apple. It is also - * used to encode ILBM and PBM subtypes of IFF files, and some flavors of - * TIFF. - * - * As there is no compression across row boundaries in the above formats, - * read() will extract a *new* line on each call, discarding any alignment - * or padding. - */ -class PackBitsReadStream : public Common::ReadStream { - -protected: - Common::ReadStream *_input; - -public: - PackBitsReadStream(Common::ReadStream &input); - ~PackBitsReadStream(); - - virtual bool eos() const; - - uint32 read(void *dataPtr, uint32 dataSize); -}; - -} // End of namespace Graphics - -#endif |