audio is getting closer?

lib/timer.c

@@ -1,15 +1,31 @@
 
+#include <Windows.h>
+
 #include <timer.h>
 #include <interrupts.h>
 #include <audio.h>
+#include <profileapi.h>
 
 static timer_context ctx = {0};
+long long counts_per_cycle;
+long long last;
+long long now;
 
 void timer_init() {
     ctx.div = 0XAC00;
+    LARGE_INTEGER freq;
+    QueryPerformanceFrequency(&freq);
+    counts_per_cycle = freq.QuadPart / (1 << 19);
 }
 
 void timer_tick() {
+    //while(now - last < counts_per_cycle){
+    //    LARGE_INTEGER current;
+    //    QueryPerformanceCounter(&current);
+    //    now = current.QuadPart;
+    //    //printf("Last-now: %lld, counts: %lld\n", now - last, counts_per_cycle);
+    //}
+    last = now;
     u16 prev_div = ctx.div;
     ctx.div++;
     bool timer_update = false;
@@ -42,6 +58,10 @@ void timer_tick() {
     if((prev_div & (1 << 12)) && (!(ctx.div & (1 << 12)))){
         audio_tick();
     }
+
+    if((prev_div & (1 << 1)) && (!(ctx.div & (1 << 1)))){
+        audio_period_tick();
+    }
 }
 
 void timer_write(u16 address, u8 value){