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5bbabdcfdd
fourier transforms and optimal cost equations. Fast 2-tap linear as a low quality alternative. - libgambatte: Use deltas and a running sum to decrease buffer writes in sound emulation sample generation. - libgambatte: Rearrange sound emulation event loop to optimize for high-frequency event units. - libgambatte: Initialize palette arrays to avoid valgrind noise. - Don't do resampling in libgambatte. Update API to reflect this. - Move non-emulation common code to a common directory to avoid duplication. - Update front-ends to new libgambatte API. - Utilize resampling framework in front-ends. Selectable resamplers. - Improved adaptive sleep class that estimates oversleep. - Gambatte SDL: Estimate actual output sample rate in terms of OS timers and derive frame rate from it. - Gambatte SDL: Move AudioData and RingBuffer classes to separate files. - Gambatte SDL: Make underruns slightly less painful, by resetting buffer positions. - Gambatte Qt: Update AudioEngine to support sample rate estimation in terms of OS timers. - Gambatte Qt: Implement sample rate estimation in ALSA and OSS audio engines. - Gambatte Qt: AlsaEngine: Revert to using snd_pcm_avail_update for buffer status since snd_pcm_delay may consider external latencies. - Gambatte Qt: AlsaEngine: Use snd_pcm_hw_params_set_buffer_time_near. Don't request a particular number of periods per buffer. - Gambatte Qt: AlsaEngine: Use hw as default custom device string, rather than hw:0,0. - Gambatte Qt: OssEngine: Don't trust GETOSPACE fragment info. - Gambatte Qt: Estimate optimal frame rate based on sample rate estimations. - Gambatte Qt: Extend BlitterWidget to support estimation of vsynced frame rate in terms of OS timers. - Gambatte Qt: Implement vsync frame rate estimation in QGlBlitter, Direct3DBlitter and DirectDrawBlitter. - Gambatte Qt: Use a combination of OS timer sample rate estimation and vsync frame rate estimation to derive resampling ratio for no-frame-duplication vsync. - Gambatte Qt: Change API to reflect MediaSources not being responsible for resampling. - Gambatte Qt: Make sure to parent PaletteDialog list model, so it gets deleted properly. - Various refactoring, small changes and stuff I forgot. git-svn-id: https://gambatte.svn.sourceforge.net/svnroot/gambatte@165 9dfb2916-2d38-0410-aef4-c5fe6c9ffc24
32 lines
1.5 KiB
C
32 lines
1.5 KiB
C
/***************************************************************************
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* Copyright (C) 2008 by Sindre Aamås *
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* aamas@stud.ntnu.no *
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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 version 2 as *
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* published by the Free Software Foundation. *
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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 version 2 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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* version 2 along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef USEC_H
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#define USEC_H
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typedef unsigned long usec_t;
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static inline usec_t negate(usec_t t) {
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return usec_t(0) - t;
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}
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usec_t getusecs();
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void usecsleep(usec_t usecs);
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#endif
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