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Diffstat (limited to 'engines/dreamweb/segment.h')
| -rw-r--r-- | engines/dreamweb/segment.h | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/engines/dreamweb/segment.h b/engines/dreamweb/segment.h deleted file mode 100644 index 65bc2335ea..0000000000 --- a/engines/dreamweb/segment.h +++ /dev/null @@ -1,232 +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. - * - */ - -#ifndef DREAMGEN_SEGMENT_H -#define DREAMGEN_SEGMENT_H - -#include "common/array.h" -#include "common/ptr.h" -#include "common/hashmap.h" -#include "common/list.h" - -namespace DreamGen { - -class WordRef { - uint8 *_data; - unsigned _index; - uint16 _value; - -public: - inline WordRef(Common::Array<uint8> &data, unsigned index) : _data(data.begin() + index), _index(index) { - assert(index + 1 < data.size()); - _value = _data[0] | (_data[1] << 8); - } - - inline WordRef& operator=(const WordRef &ref) { - _value = ref._value; - return *this; - } - - inline WordRef& operator=(uint16 v) { - _value = v; - return *this; - } - - inline operator uint16&() { - return _value; - } - - inline ~WordRef() { - // FIXME: This is _too late_ to write back the - // value. Example: in the call - // printDirect(data.word(kLastxpos), .....) - // the destructor isn't called until after printDirect returns. This - // destroys the modifications to lastXPos that printDirect makes. - _data[0] = _value & 0xff; - _data[1] = _value >> 8; - _value = _data[0] | (_data[1] << 8); - } -}; - -class Segment { - Common::Array<uint8> data; - -public: - Segment(uint size = 0) { - if (size > 0) - data.resize(size); - } - - inline void assign(const uint8 *b, const uint8 *e) { - data.assign(b, e); - } - - inline uint8 &byte(unsigned index) { - assert(index < data.size()); - return data[index]; - } - - inline WordRef word(unsigned index) { - return WordRef(data, index); - } - - inline uint8 *ptr(unsigned index, unsigned size) { - assert(index + size <= data.size()); - return data.begin() + index; - } -}; - -typedef Common::SharedPtr<Segment> SegmentPtr; - -class SegmentRef { - uint16 _value; - SegmentPtr _segment; - -public: - SegmentRef(uint16 value = 0, SegmentPtr segment = SegmentPtr()) - : _value(value), _segment(segment) { - } - - inline operator uint16() const { - return _value; - } - - SegmentPtr getSegmentPtr() const { - return _segment; - } - - inline uint8 &byte(unsigned index) { - assert(_segment != 0); - return _segment->byte(index); - } - - inline WordRef word(unsigned index) { - //debug(1, "getting word ref for %04x:%d", _value, index); - assert(_segment != 0); - return _segment->word(index); - } - - inline void assign(const uint8 *b, const uint8 *e) { - assert(_segment != 0); - _segment->assign(b, e); - } - - inline uint8 *ptr(unsigned index, unsigned size) { - assert(_segment != 0); - return _segment->ptr(index, size); - } - -protected: - SegmentRef &operator=(const SegmentRef &seg) { - _value = seg._value; - _segment = seg._segment; - return *this; - } - -}; - -class SegmentManager; - -class MutableSegmentRef : public SegmentRef { -protected: - SegmentManager *_segMan; - -public: - MutableSegmentRef(SegmentManager *segMan, uint16 value = 0, SegmentPtr segment = SegmentPtr()) - : _segMan(segMan), SegmentRef(value, segment) { - } - - MutableSegmentRef(SegmentManager *segMan, SegmentRef seg) - : _segMan(segMan), SegmentRef(seg) { - } - - inline MutableSegmentRef& operator=(const uint16 id); - -}; - - -class SegmentManager { -private: - typedef Common::HashMap<uint16, SegmentPtr> SegmentMap; - SegmentMap _segments; - - typedef Common::List<uint16> FreeSegmentList; - FreeSegmentList _freeSegments; - - enum { kDefaultDataSegment = 0x1000 }; - -public: - - SegmentPtr _realData; ///< the primary data segment, points to a huge blob of binary data - SegmentRef data; ///< fake segment register always pointing to data segment - -public: - SegmentManager() : - _realData(new Segment()), - data(kDefaultDataSegment, _realData) { - - _segments[kDefaultDataSegment] = data.getSegmentPtr(); - } - - SegmentRef getSegment(uint16 value) { - SegmentMap::iterator i = _segments.find(value); - if (i != _segments.end()) - return SegmentRef(value, i->_value); - else - return SegmentRef(value); - } - - SegmentRef allocateSegment(uint size) { - unsigned id; - if (_freeSegments.empty()) - id = kDefaultDataSegment + _segments.size(); - else { - id = _freeSegments.front(); - _freeSegments.pop_front(); - } - assert(!_segments.contains(id)); - SegmentPtr seg(new Segment(size)); - _segments[id] = seg; - return SegmentRef(id, seg); - } - - void deallocateSegment(uint16 id) { - SegmentMap::iterator i = _segments.find(id); - if(i != _segments.end()) { - _segments.erase(i); - _freeSegments.push_back(id); - } else { - debug("Deallocating non existent segment! Client code should be fixed."); - } - } - -}; - - -inline MutableSegmentRef& MutableSegmentRef::operator=(const uint16 id) { - SegmentRef::operator=(_segMan->getSegment(id)); - return *this; -} - -} // End of namespace DreamGen - -#endif |