1//------------------------------------------------------------------------------ 2// Copyright (c) 2001-2002, Haiku 3// 4// Permission is hereby granted, free of charge, to any person obtaining a 5// copy of this software and associated documentation files (the "Software"), 6// to deal in the Software without restriction, including without limitation 7// the rights to use, copy, modify, merge, publish, distribute, sublicense, 8// and/or sell copies of the Software, and to permit persons to whom the 9// Software is furnished to do so, subject to the following conditions: 10// 11// The above copyright notice and this permission notice shall be included in 12// all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20// DEALINGS IN THE SOFTWARE. 21// 22// File Name: GameSoundDevice.h 23// Author: Christopher ML Zumwalt May (zummy@users.sf.net) 24// Description: Utility functions used by sound system 25//------------------------------------------------------------------------------ 26#ifndef _GAMESOUND_UTILITY_H 27#define _GAMESOUND_UTILITY_H 28 29 30#include <GameSoundDefs.h> 31#include <MediaDefs.h> 32 33 34struct _gs_ramp 35{ 36 float inc; 37 float orignal; 38 float* value; 39 40 float frame_total; 41 float frame_inc; 42 43 float frame_count; 44 float frame_inc_count; 45 46 bigtime_t duration; 47}; 48 49 50_gs_ramp* InitRamp(float* value, float set, float frames, bigtime_t duration); 51bool ChangeRamp(_gs_ramp* ramp); 52size_t get_sample_size(int32 format); 53void media_to_gs_format(gs_audio_format* dest, 54 media_raw_audio_format* source); 55 56 57template<typename T, int32 min, int32 max> 58static inline T clamp(float value) 59{ 60 if (value <= min) 61 return min; 62 if (value >= max) 63 return max; 64 return T(value); 65} 66#endif 67