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65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/ptr.h"
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#include "common/file.h"
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#include "common/debug.h"
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#include "common/formats/disk_image.h"
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#ifndef ADL_DISK_H
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#define ADL_DISK_H
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namespace Common {
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class SeekableReadStream;
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class String;
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}
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namespace Adl {
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// On the Apple II, sector headers contain a disk volume number. This number
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// is used by ADL multi-disk games. The PC port has the disk volume number
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// as the first data byte of every sector that contains game data. We need
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// to skip this number as we read in the data. Additionally, the data is now
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// prefixed with an uint16 containing the data size.
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class DataBlock_PC : public Common::DataBlock {
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public:
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DataBlock_PC(Common::DiskImage *disk, byte track, byte sector, uint16 offset = 0) :
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_disk(disk),
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_track(track),
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_sector(sector),
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_offset(offset) { }
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~DataBlock_PC() override { }
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Common::SeekableReadStream *createReadStream() const override;
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private:
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void read(Common::SeekableReadStream &stream, byte *const dataPtr, const uint32 size) const;
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Common::DiskImage *_disk;
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byte _track, _sector;
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uint16 _offset;
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};
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} // End of namespace Adl
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#endif
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