"Backport de l'IHM de test7 dans le projet principal.

Application licence GPL v3.0
Renommage appli Music2Light (homonymes existants) -> Instru2Light


git-svn-id: file:///var/svn/2012-violon-leds/trunk@30 6be1fa4d-33ac-4c33-becc-79fcb3794bb6

1 files changed, 22 insertions, 8 deletions

diff --git a/src/compute.c b/src/compute.c
index ce0575f..e574838 100644
--- a/src/compute.c
+++ b/src/compute.c
@@ -1,3 +1,20 @@
+/*
+    Instru2Light - Illumine un instrument de musique en temps réel
+    Copyright (C) 2012 Ludovic Pouzenc <lpouzenc@gmail.com>    
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
 #include "compute.h"
 
 #include "fft.h"
@@ -6,10 +23,6 @@
 #define MIN_SAMPLES 256
 #define MAX_SAMPLES 2048
 
-//#define MAX(a,b) (a>b?a:b)
-//#define MIN(a,b) (a<b?a:b)
-
-//static inline float todB_a(const float *x);
 void compute_spectrum(float *data, int width, float output[PSHalf]);
 
 
@@ -57,12 +70,13 @@ float compute_level(const float *data, size_t nsamples, int rate) {
 
 	return value;
 }
+
 /*
-static inline float todB_a(const float *x){
-  return (float)((*(int32_t *)x)&0x7fffffff) * 7.17711438e-7f -764.6161886f;
-}
+   This function was adapted from Audacity 1.3.13
+   (orignally in C++ and with more genericity and functionnality)
+   Original Author : Dominic Mazzoni
+   Licenced under GPL 2.0
 */
-// Adapted from Audacity 
 void compute_spectrum(float *data, int width, float output[PSHalf]) {
 
 	int i, start, windows;