Chris Taylor / Mbed 2 deprecated RETRO-CityRally

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Dependencies:   mbed

Diff: OneBitSound/SoundChannel.h

Revision:
0:d85c449aca6d
diff -r 000000000000 -r d85c449aca6d OneBitSound/SoundChannel.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OneBitSound/SoundChannel.h	Wed Jan 28 03:26:07 2015 +0000
@@ -0,0 +1,42 @@
+#ifndef __SOUNDCHANNEL_H__
+#define __SOUNDCHANNEL_H__
+class SoundChannel
+{   
+public: 
+    SoundChannel();
+    
+    protected:
+        void play(const SoundBlock soundBlocks[], int count);
+        bool update(bool &pinState);            
+    
+    private:
+        void updateTone();
+        void updateNoise();
+        
+        void startSoundBlock();
+        bool updateCounters();
+        void updateAudioCounters();
+        
+        static uint16_t lfsr_rand();
+        
+    private:
+        int         _state;
+        uint16_t    _stepCounter;
+        uint16_t    _stepDurationCounter;
+        fix16_t     _basePitchHighCount;
+        fix16_t     _basePitchLowCount;
+        fix16_t     _pitchHighCounter;
+        fix16_t     _pitchLowCounter;
+        fix16_t     _pitchOffset;
+        fix16_t     _dutyOffset;
+        
+        const SoundBlock *_soundBlocks;        
+        int         _count;
+        int         _index;  
+        bool        _pinState;
+        
+        SoundBlock  _currentSoundBlock;
+        
+    friend class OneBitSound;           
+};
+#endif //__SOUNDCHANNEL_H__
\ No newline at end of file