1 /* 2 Musical Spectrum plugin for the DeaDBeeF audio player 3 4 Copyright (C) 2015 Christian Boxdörfer <christian.boxdoerfer@posteo.de> 5 6 Based on DeaDBeeFs stock spectrum. 7 Copyright (c) 2009-2015 Alexey Yakovenko <waker@users.sourceforge.net> 8 Copyright (c) 2011 William Pitcock <nenolod@dereferenced.org> 9 10 This program is free software; you can redistribute it and/or 11 modify it under the terms of the GNU General Public License 12 as published by the Free Software Foundation; either version 2 13 of the License, or (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 23 */ 24 25 #ifndef UTILS_HEADER 26 #define UTILS_HEADER 27 28 #include <gtk/gtk.h> 29 30 extern int CALCULATED_NUM_BARS; 31 32 void 33 _memset_pattern (char *data, const void* pattern, size_t data_len, size_t pattern_len); 34 35 void 36 update_num_bars (gpointer user_data); 37 38 int 39 get_num_bars (); 40 41 void 42 create_gradient_table (uint32_t *dest, GdkColor *colors, int num_colors); 43 44 void 45 create_window_table (gpointer user_data); 46 47 void 48 create_frequency_table (gpointer user_data); 49 50 float 51 linear_interpolate (float y1, float y2, float mu); 52 53 float 54 lagrange_interpolate (float y0, float y1, float y2, float y3, float x); 55 #endif 56