use constant

2 files changed, 4 insertions, 3 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 7e7d90a..b3e9dc0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,6 +5,8 @@
 #include "chip8.hpp"
 #include "platform.hpp"
 
+#define WINDOW_TITLE "chip8emu"
+
 int main(int argc, char** argv) {
   if (argc != 4) {
     std::cerr << "Usage: " << argv[0] << " <Scale> <Delay> <ROM>\n";
@@ -16,7 +18,7 @@ int main(int argc, char** argv) {
   char const* filename = argv[3];
 
   Platform platform(
-    "chip8emu",
+    WINDOW_TITLE,
     VIDEO_WIDTH * videoScale,
     VIDEO_HEIGHT * videoScale,
     VIDEO_WIDTH, VIDEO_HEIGHT
diff --git a/src/platform.cpp b/src/platform.cpp
index f2d5984..93e574b 100644
--- a/src/platform.cpp
+++ b/src/platform.cpp
@@ -117,11 +117,10 @@ void Platform::AudioCallback(void* userdata, uint8_t* stream, int len) {
   Platform* platform = static_cast<Platform*>(userdata);
   if (platform->beepRequested) {
       static double time = 0.0;
-      double freq = 440.0;
 
       int16_t* sample = reinterpret_cast<int16_t*>(stream);
       for (int i = 0; i < len / 2; i++) {
-          int16_t value = static_cast<int16_t>(32767.0 * sin(2.0 * PI * freq * time));
+          int16_t value = static_cast<int16_t>(32767.0 * sin(2.0 * PI * FREQUENCY * time));
           sample[i] = value;
           time += 1.0 / SAMPLE_RATE;
       }