1 #ifndef CYDRVB_H 2 #define CYDRVB_H 3 4 /* 5 Copyright (c) 2009-2010 Tero Lindeman (kometbomb) 6 7 Permission is hereby granted, free of charge, to any person 8 obtaining a copy of this software and associated documentation 9 files (the "Software"), to deal in the Software without 10 restriction, including without limitation the rights to use, 11 copy, modify, merge, publish, distribute, sublicense, and/or sell 12 copies of the Software, and to permit persons to whom the 13 Software is furnished to do so, subject to the following 14 conditions: 15 16 The above copyright notice and this permission notice shall be 17 included in all copies or substantial portions of the Software. 18 19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 21 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 23 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 24 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 25 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 26 OTHER DEALINGS IN THE SOFTWARE. 27 */ 28 29 #include "cydtypes.h" 30 #include <math.h> 31 32 // Max delay length in milliseconds 33 #define CYDRVB_SIZE 2000 34 #define CYDRVB_TAPS 16 35 #define CYDRVB_0dB 2048 36 #define CYDRVB_LOW_LIMIT (int)(100.0 * log(1.0 / (double)CYDRVB_0dB)) 37 38 typedef struct 39 { 40 int position; 41 #ifdef STEREOOUTPUT 42 int gain_r, gain_l; 43 #else 44 int gain; 45 #endif 46 int delay; 47 } CydTap; 48 49 typedef struct 50 { 51 Sint32 *buffer; 52 int size, rate; 53 int position; 54 CydTap tap[CYDRVB_TAPS]; 55 } CydReverb; 56 57 void cydrvb_init(CydReverb *rvb, int rate); 58 void cydrvb_deinit(CydReverb *rvb); 59 60 #ifdef STEREOOUTPUT 61 void cydrvb_cycle(CydReverb *rvb, Sint32 left, Sint32 right); 62 void cydrvb_output(CydReverb *rvb, Sint32 *left, Sint32 *right); 63 #else 64 void cydrvb_cycle(CydReverb *rvb, Sint32 input); 65 Sint32 cydrvb_output(CydReverb *rvb); 66 #endif 67 68 void cydrvb_set_tap(CydReverb *rvb, int idx, int delay_ms, int gain_db, int panning); 69 70 #endif 71