refactored unused code

include/audio.h

@@ -115,18 +115,25 @@ typedef struct {
     u32 left_index;
 
     float right_history[384];
-    u32 right_index;
+    u32 right_index; 
 
-    u8 sq1_sample_val;
-    u64 sq1_write_index; 
-    u64 sq1_read_index;
-    u32 buffer_cnt;
-    float *sq1_audio_buffer;
+    u64 buffer_write_index; 
+    float *left_audio_buffer;
+    float *right_audio_buffer;
 
-    u8 sq2_sample_val;
-    float *sq2_audio_buffer;
-    float *ch3_audio_buffer; 
-    float *ch4_audio_buffer;
+    u32 lfsr_timer;
+
+    float left_cap;
+    float right_cap;
+
+    int history_timer;
+    float smooth_left;
+    float smooth_right;
+
+    double cycles_needed;
+
+    u32 period_tick; 
+    u32 ticks;
 
 } audio_context;