From 55da5a9d77fb8fa968f4b70ab74c3b2a5b482d6f Mon Sep 17 00:00:00 2001
From: Ahmet Inan <xdsopl@googlemail.com>
Date: Fri, 9 Jan 2015 18:12:23 +0100
Subject: [PATCH] do rounding to nearest in freq_marker

---
 app/src/main/rs/stft.rsh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/src/main/rs/stft.rsh b/app/src/main/rs/stft.rsh
index f45a632..5293648 100644
--- a/app/src/main/rs/stft.rsh
+++ b/app/src/main/rs/stft.rsh
@@ -36,7 +36,7 @@ static inline uchar4 rainbow(float v)
 static void freq_marker(int freq)
 {
     for (int j = 0; j < spectrum_height; ++j) {
-        int i = (radix2_N * freq) / sample_rate;
+        int i = (radix2_N * freq + sample_rate / 2) / sample_rate;
         spectrum_buffer[spectrum_width * j + i] = rgb(255, 255, 255);
     }
 }