mirror of
https://github.com/libretro/scummvm.git
synced 2024-11-30 21:00:39 +00:00
139 lines
3.0 KiB
C++
139 lines
3.0 KiB
C++
/* 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.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*/
|
|
|
|
|
|
#ifndef GRAPHICS_IFF_H
|
|
#define GRAPHICS_IFF_H
|
|
|
|
#include "common/iff_container.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));
|
|
}
|
|
};
|
|
|
|
|
|
// handles ILBM subtype of IFF FORM files
|
|
//
|
|
class ILBMDecoder : public Common::IFFParser {
|
|
|
|
protected:
|
|
void readBMHD(Common::IFFChunk &chunk);
|
|
void readCMAP(Common::IFFChunk &chunk);
|
|
void readBODY(Common::IFFChunk &chunk);
|
|
|
|
BMHD _bitmapHeader;
|
|
uint32 _colorCount;
|
|
|
|
Surface *_surface;
|
|
byte **_colors;
|
|
|
|
void fillPlane(byte *out, byte* buf, uint32 width, uint32 plane);
|
|
|
|
public:
|
|
ILBMDecoder(Common::ReadStream &input, Surface &surface, byte *&colors);
|
|
virtual ~ILBMDecoder() { }
|
|
void decode();
|
|
};
|
|
|
|
|
|
// handles PBM subtype of IFF FORM files
|
|
//
|
|
class PBMDecoder : public Common::IFFParser {
|
|
|
|
protected:
|
|
void readBMHD(Common::IFFChunk &chunk);
|
|
void readCMAP(Common::IFFChunk &chunk);
|
|
void readBODY(Common::IFFChunk &chunk);
|
|
|
|
BMHD _bitmapHeader;
|
|
uint32 _colorCount;
|
|
|
|
Surface *_surface;
|
|
byte **_colors;
|
|
|
|
public:
|
|
PBMDecoder(Common::ReadStream &input, Surface &surface, byte *&colors);
|
|
virtual ~PBMDecoder() { }
|
|
void decode();
|
|
};
|
|
|
|
void decodePBM(Common::ReadStream &input, Surface &surface, byte *&colors);
|
|
|
|
|
|
/*
|
|
PackBits is a RLE compression algorithm introduced
|
|
by Apple. It is also used to encode ILBM and PBM
|
|
subtypes of IFF files, and some flavours of TIFF.
|
|
|
|
The following implementation uses a static storage
|
|
and is buffered, that means you can't destroy the
|
|
input stream before you are done with it.
|
|
*/
|
|
class PackBitsReadStream : public Common::ReadStream {
|
|
|
|
protected:
|
|
Common::ReadStream *_input;
|
|
|
|
byte _storage[257];
|
|
byte *_wStoragePos;
|
|
byte *_rStoragePos;
|
|
|
|
byte* _out;
|
|
byte* _outEnd;
|
|
int32 _fed;
|
|
int32 _unpacked;
|
|
|
|
void store(byte b);
|
|
void feed();
|
|
void unpack();
|
|
|
|
public:
|
|
PackBitsReadStream(Common::ReadStream &input);
|
|
~PackBitsReadStream();
|
|
|
|
virtual bool eos() const;
|
|
uint32 read(void *dataPtr, uint32 dataSize);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|