Correct storage class of some variables in FIR

Audio.cpp

 
 
 
-
 /******************************************************************/
 
-// arm state arrays and FIR instances for left and right channels
-// the state arrays are defined to handle a maximum of MAX_COEFFS
-// coefficients in a filter
-q15_t AudioFilterFIR::l_StateQ15[AUDIO_BLOCK_SAMPLES + MAX_COEFFS];
-q15_t AudioFilterFIR::r_StateQ15[AUDIO_BLOCK_SAMPLES + MAX_COEFFS];
-arm_fir_instance_q15 AudioFilterFIR::l_fir_inst;
-arm_fir_instance_q15 AudioFilterFIR::r_fir_inst;
-
-// pointer to current coefficients or NULL or FIR_PASSTHRU
-short * AudioFilterFIR::coeff_p = NULL;
-
 void AudioFilterFIR::begin(short *cp,int n_coeffs)
 {
   // pointer to coefficients

Audio.h

 {
 public:
   AudioFilterFIR(void): 
-  AudioStream(2,inputQueueArray) { 
+  AudioStream(2,inputQueueArray), coeff_p(NULL)
+  { 
   }
 
   void begin(short *coeff_p,int f_pin);
   
 private:
   audio_block_t *inputQueueArray[2];
-  static q15_t l_StateQ15[];
-  static q15_t r_StateQ15[];
-  static arm_fir_instance_q15 l_fir_inst;
-  static arm_fir_instance_q15 r_fir_inst;
-  static short *coeff_p;
+  // arm state arrays and FIR instances for left and right channels
+  // the state arrays are defined to handle a maximum of MAX_COEFFS
+  // coefficients in a filter
+  q15_t l_StateQ15[AUDIO_BLOCK_SAMPLES + MAX_COEFFS];
+  q15_t r_StateQ15[AUDIO_BLOCK_SAMPLES + MAX_COEFFS];
+  arm_fir_instance_q15 l_fir_inst;
+  arm_fir_instance_q15 r_fir_inst;
+  // pointer to current coefficients or NULL or FIR_PASSTHRU
+  short *coeff_p;
 };