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author | Johannes Schickel | 2010-10-13 03:57:44 +0000 |
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committer | Johannes Schickel | 2010-10-13 03:57:44 +0000 |
commit | 75e8452b6e6a2bf4fb2f588aa00b428a60d873b5 (patch) | |
tree | f29541d55309487a94bd1d38e8b53bb3dde9aec6 /engines/sword25/gfx/framecounter.h | |
parent | 48ee83b88957dab86bc763e9ef21a70179fa8679 (diff) | |
parent | e9f50882ea5b6beeefa994040be9d3bab6a1f107 (diff) | |
download | scummvm-rg350-75e8452b6e6a2bf4fb2f588aa00b428a60d873b5.tar.gz scummvm-rg350-75e8452b6e6a2bf4fb2f588aa00b428a60d873b5.tar.bz2 scummvm-rg350-75e8452b6e6a2bf4fb2f588aa00b428a60d873b5.zip |
OPENGL: Merged from trunk, from rev 52105 to 53396.
This includes an rather hacky attempt to merge all the recent gp2x backend
changes into the branch. I suppose the gp2x backend and probably all new
backends, i.e. gph, dingux etc., might not compile anymore.
Since I have no way of testing those it would be nice if porters could look
into getting those up to speed in this branch.
svn-id: r53399
Diffstat (limited to 'engines/sword25/gfx/framecounter.h')
-rw-r--r-- | engines/sword25/gfx/framecounter.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/engines/sword25/gfx/framecounter.h b/engines/sword25/gfx/framecounter.h new file mode 100644 index 0000000000..8a8402a3bb --- /dev/null +++ b/engines/sword25/gfx/framecounter.h @@ -0,0 +1,94 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +/* + * This code is based on Broken Sword 2.5 engine + * + * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer + * + * Licensed under GNU GPL v2 + * + */ + +#ifndef SWORD25_FRAMECOUNTER_H +#define SWORD25_FRAMECOUNTER_H + +// Includes +#include "sword25/kernel/common.h" +#include "sword25/kernel/bs_stdint.h" + +namespace Sword25 { + +/** + * A simple class that implements a frame counter + */ +class Framecounter { +private: + enum { + DEFAULT_UPDATE_FREQUENCY = 10 + }; + +public: + /** + * Creates a new BS_Framecounter object + * @param UpdateFrequency Specifies how often the frame counter should be updated in a sceond. + * The default value is 10. + */ + Framecounter(int UpdateFrequency = DEFAULT_UPDATE_FREQUENCY); + + /** + * Determines how often the frame counter should be updated in a second. + * @param UpdateFrequency Specifies how often the frame counter should be updated in a second. + */ + inline void SetUpdateFrequency(int UpdateFrequency); + + /** + * This method must be called once per frame. + */ + void Update(); + + /** + * Returns the current FPS value. + */ + int GetFPS() const { + return m_FPS; + } + +private: + int m_FPS; + int m_FPSCount; + int64_t m_LastUpdateTime; + uint64_t m_UpdateDelay; +}; + +// Inlines +void Framecounter::SetUpdateFrequency(int UpdateFrequency) { + // Frequency in time (converted to microseconds) + m_UpdateDelay = 1000000 / UpdateFrequency; +} + +} // End of namespace Sword25 + +#endif |