00001 /* 00002 $Id: Out2sumUG.h 3255 2005-05-14 03:27:27Z leighsmith $ 00003 00004 Defined In: The MusicKit 00005 Description: 00006 Out2sumUG - from dsp macro /usr/lib/dsp/ugsrc/out2sum.asm (see source for details). 00007 00008 Out2sum writes its input signal to both channels of the stereo output 00009 sample stream of the DSP, adding into that stream. 00010 The stream is cleared before each DSP tick (each orchestra program 00011 iteration). Out2sum also provides individual scaling on each output channel. 00012 The method setBearing: allows a convenient way to control the proportion 00013 of the signal sent to each channel. 00014 00015 You instantiate a subclass of the form 00016 Out2sumUG<a>, where <a> = space of input 00017 00018 Original Author: David A. Jaffe 00019 00020 Copyright (c) 1988-1992, NeXT Computer, Inc. 00021 Portions Copyright (c) 1994 NeXT Computer, Inc. and reproduced under license from NeXT 00022 Portions Copyright (c) 1994 Stanford University. 00023 Portions Copyright (c) 1999-2001, The MusicKit Project. 00024 */ 00025 // classgroup Sound Inputs and Outputs 00058 #ifndef __MK_Out2sumUG_H___ 00059 #define __MK_Out2sumUG_H___ 00060 00061 #import <MusicKit/MKUnitGenerator.h> 00062 00063 @interface Out2sumUG : MKUnitGenerator 00064 { 00065 BOOL _reservedOut2sum1; 00066 double bearingScale; 00067 } 00068 00076 +(BOOL)shouldOptimize:(unsigned) arg; 00077 00089 - setLeftScale: (double) value; 00090 00102 - setRightScale: (double) value; 00103 00115 - setBearing: (double) degrees; 00116 /* As a convenience, you can set both scaleA and scaleB with a single 00117 message. 00118 00119 When val is 0, the signal is equally distributed between the two channels. 00120 When val is -45, you get the left channel, +45 you get the right channel. 00121 Val = 90 is the same as val = 0. */ 00122 00123 00132 - setBearing: (double) degrees scale: (double) scaleValue; 00133 00141 - runSelf; 00142 00154 -idleSelf; 00155 /* Since Out2sum has no outputs, it idles itself by patching its inputs 00156 to zero. Thus, an idle Out2sum makes no sound. */ 00157 00158 00168 -setInput: (id) aPatchPoint; 00169 /* Sets input patch point. */ 00170 @end 00171 00172 #endif
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