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86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/* ScummVM - Scumm int32erpreter
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* Copyright (C) 2001/2002 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#ifndef BRENDERER_H
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#define BRENDERER_H
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#include "config.h"
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#include "renderer.h"
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#include "palette.h"
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/*! @brief base class for easily creating ::renderer instances
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This class implements some function available in the ::renderer abstract class, so that
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creation of subclasses of ::renderer is easier.
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*/
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class BaseRenderer : public Renderer {
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private:
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Palette _pal; //!< The current palette
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char * _data; //!< The current frame buffer
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int32 _frame; //!< The current frame number
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int32 _nbframes; //!< The number of frames in the animation
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int32 _width; //!< The current frame's width
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int32 _height; //!< The current frame's height
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const char * _fname; //!< The filename of the animation being played
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protected:
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virtual void save(int32 frame = -1) = 0;
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protected:
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const char * getFilename() const { return _fname; }; //!< accessor for animation filename
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int32 getNbframes() const { return _nbframes; }; //!< accessor for number of frames
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int32 getWidth() const { return _width; }; //!< accessor for current width
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int32 getHeight() const { return _height; }; //!< accessor for current height
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const Palette & pal() const { return _pal; }; //!< accessor for current palette
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const char * data() const { return _data; }; //!< accessor for current frame buffer
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void clean(); //!< memory cleanup (deletes frame buffer)
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void setFrame(int32 f) { _frame = f; }; //!< allows to change the frame number
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public:
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int32 getFrame() const { return _frame; }; //!< accessor for current frame number
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BaseRenderer();
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virtual ~BaseRenderer();
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virtual bool initFrame(const Point & size);
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virtual char * lockFrame(int32 frame);
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virtual bool unlockFrame();
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virtual bool flipFrame();
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virtual bool setPalette(const Palette & pal);
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virtual bool startDecode(const char * fname, int32 version, int32 nbframes) { _fname = fname; _nbframes = nbframes; return true; }
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virtual Mixer * getMixer() { return 0; };
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virtual bool prematureClose() { return false; };
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};
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/*! @brief A null ::renderer
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This class completely implements ::renderer, without actually doing anything.
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This class is useful for performance measurements.
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*/
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class NullRenderer : public BaseRenderer {
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protected:
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void save(int32 frame = -1) {};
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public:
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NullRenderer() {};
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virtual ~NullRenderer() {};
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bool wait(int32 ms) { return true; };
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};
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#endif
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