X-Git-Url: https://git.sesse.net/index.cgi/?p=pitch;a=blobdiff_plain;f=glpitch.cpp;h=a3c301051046fe2466b3bb5a7a45a234a905703d;hp=90c47b8502715ec95bda0f2a7e73a97c819dc26d;hb=09fabeb39bc13d46d88351729d3b8daecab8820e;hpb=f5029e9edd2cff89ae9e0ff3d836d871c7c61f95

diff --git a/glpitch.cpp b/glpitch.cpp
index 90c47b8..a3c3010 100644
--- a/glpitch.cpp
+++ b/glpitch.cpp
@@ -27,6 +27,19 @@ int main(void)
 	glClear(GL_COLOR_BUFFER_BIT);
 
 	for ( ;; ) {
+		SDL_Event event;
+		while (SDL_PollEvent(&event)) {
+			switch (event.type) {
+			case SDL_KEYUP:
+				if (event.key.keysym.sym == SDLK_ESCAPE) {
+					exit(0);
+				}
+				break;
+			case SDL_QUIT:
+				exit(0);
+			}
+		}
+
 		short buf[FFT_LENGTH / PAD_FACTOR / OVERLAP];
 		read_chunk(fd, buf, FFT_LENGTH / PAD_FACTOR / OVERLAP);
 		std::pair<double, double> peak = pd.detect_pitch(buf);
@@ -49,17 +62,18 @@ int main(void)
 		glVertex2f(MAX_X, 0.0f);
 		glEnd();
 
-		glBlendFunc(GL_SRC_ALPHA, GL_ONE);
-
-		double peak_pos = find_pos(peak.first);
-
-		glBegin(GL_QUADS);	
-		glColor4f(0.0, 1.0f, 0.0f, 0.2f);
-		glVertex2f(peak_pos - 0.1, 0.0f);
-		glVertex2f(peak_pos - 0.1, 1.0f);
-		glVertex2f(peak_pos + 0.1, 1.0f);
-		glVertex2f(peak_pos + 0.1, 0.0f);
-		glEnd();
+		if (peak.second - log10(FFT_LENGTH) >= 0.0) {
+			double peak_pos = find_pos(peak.first);
+
+			glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+			glBegin(GL_QUADS);	
+			glColor4f(0.0, 1.0f, 0.0f, 0.2f);
+			glVertex2f(peak_pos - 0.1, 0.0f);
+			glVertex2f(peak_pos - 0.1, 1.0f);
+			glVertex2f(peak_pos + 0.1, 1.0f);
+			glVertex2f(peak_pos + 0.1, 0.0f);
+			glEnd();
+		}
 
 		glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
 		glBegin(GL_LINES);