Delay_Unit.cpp

00001 /*****************************************************/
00002 /*  Delay_Unit.cpp                                   */
00003 /*                                                   */
00004 /*****************************************************/
00005 
00006 #define     DELAY_MAIN
00007 #include    "Delay_Unit.h"
00008 
00009 #define  LIMIT_P        (32767)
00010 #define  LIMIT_N        (-32768)
00011 
00012 int delay(int iEffectIn) {
00013 
00014     int iSignal;
00015 
00016     // Bypass ?
00017     if(g_iDelayBypass == 0)return iEffectIn;
00018 
00019     // Delay
00020     iSignal = (int)g_sDelayBuff[g_usDelayPoint] * g_iDelayFeedBackLevel / 100 + iEffectIn;
00021         
00022     // Output Gain
00023     if (iSignal >= LIMIT_P)iSignal = LIMIT_P;
00024     if (iSignal <= LIMIT_N)iSignal = LIMIT_N;
00025 
00026     g_sDelayBuff[g_usDelayPoint] = iSignal;
00027 
00028     g_usDelayPoint = (g_usDelayPoint + 1) % (MAX_DELAY_POINT * g_iDelayTime / MAX_DELAY_TIME);
00029 
00030     return iSignal;
00031 
00032 }
00033 
00034 #undef      DELAY_MAIN