diff options
Diffstat (limited to 'src/compute.c')
| -rw-r--r-- | src/compute.c | 30 |
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; |