/[svn]/linuxsampler/trunk/src/engines/common/LFOBase.h
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revision 3611 by schoenebeck, Fri Aug 23 11:44:00 2019 UTC revision 3612 by schoenebeck, Mon Sep 30 18:03:43 2019 UTC
# Line 21  Line 21 
21  #ifndef __LS_LFOBASE_H__  #ifndef __LS_LFOBASE_H__
22  #define __LS_LFOBASE_H__  #define __LS_LFOBASE_H__
23    
24  #include "../../common/global.h"  #include "../LFO.h"
25  #include "../../common/RTMath.h"  #include "../../common/RTMath.h"
26    
 // IDs of the two possible implementations  
 // we get the implementation to pick from config.h  
 // the implementation IDs should be the same like in benchmarks/triang.cpp !  
 #define INT_MATH_SOLUTION       2  
 #define DI_HARMONIC_SOLUTION    3  
 #define INT_ABS_MATH_SOLUTION   5  
   
27  #include <math.h>  #include <math.h>
28  #include <stdint.h>  #include <stdint.h>
29    
30  namespace LinuxSampler {  namespace LinuxSampler {
31    
32      // *************** types ***************      /** @brief POD base for all LFO implementations.
33      // *       *
34         * This structure acts as POD (Plain Old Data structure) base for all LFO
35      /**       * implementations. For efficiency reasons all our LFOs are C++ template
36       * Whether the LFO should have positive AND negative value range       * classes. By deriving all those LFO C++ templase classes from this
37       * (signed) or only a positive value range (unsigned).       * POD structure, it allows us to at least do a unified @code delete for
38       */       * any LFO object, which would not work on @code void* pointers (correctly).
39      enum range_type_t {       *
40          range_signed,  ///< LFO's level will wave between -max ... +max       * ATM this is actually only used in LFO.cpp.
         range_unsigned ///< LFO's level will wave between 0 ... +max  
     };  
   
     /**  
      * Defines the start level of the LFO wave within the given value range.  
41       */       */
42      enum start_level_t {      struct LFOPOD {
         start_level_max, ///< wave starts from given max. level  
         start_level_mid, ///< wave starts from the middle of the given value range  
         start_level_min  ///< wave starts from given min. level  
43      };      };
44    
45      /** @brief LFO (abstract base class)      /** @brief LFO (abstract base class)
46       *       *
47       * Abstract base class for all Low Frequency Oscillator implementations.       * Abstract base class for all Low Frequency Oscillator implementations.
48       */       */
49      template<range_type_t RANGE>      template<LFO::range_type_t RANGE>
50      class LFOBase {      class LFOBase : public LFOPOD {
51          public:          public:
52    
53              // *************** attributes ***************              // *************** attributes ***************
# Line 125  namespace LinuxSampler { Line 110  namespace LinuxSampler {
110               * @param SampleRate      - current sample rate of the engines               * @param SampleRate      - current sample rate of the engines
111               *                          audio output signal               *                          audio output signal
112               */               */
113              virtual void trigger(float Frequency, start_level_t StartLevel, uint16_t InternalDepth, uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate) = 0;              virtual void trigger(float Frequency, LFO::start_level_t StartLevel, uint16_t InternalDepth, uint16_t ExtControlDepth, bool FlipPhase, unsigned int SampleRate) = 0;
114    
115          protected:          protected:
116              float Max;              float Max;
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