1 //------------------------------------------------------------------------------ 2 // Copyright (c) 2001-2002, OpenBeOS 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 34 struct _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); 51 bool ChangeRamp(_gs_ramp* ramp); 52 size_t get_sample_size(int32 format); 53 void media_to_gs_format(gs_audio_format* dest, 54 media_raw_audio_format* source); 55 56 57 #endif 58