1 /* 2 This file is part of Deadbeef Player source code 3 http://deadbeef.sourceforge.net 4 5 pcm volume manipulation routines 6 7 Copyright (C) 2009-2013 Alexey Yakovenko 8 9 This software is provided 'as-is', without any express or implied 10 warranty. In no event will the authors be held liable for any damages 11 arising from the use of this software. 12 13 Permission is granted to anyone to use this software for any purpose, 14 including commercial applications, and to alter it and redistribute it 15 freely, subject to the following restrictions: 16 17 1. The origin of this software must not be misrepresented; you must not 18 claim that you wrote the original software. If you use this software 19 in a product, an acknowledgment in the product documentation would be 20 appreciated but is not required. 21 2. Altered source versions must be plainly marked as such, and must not be 22 misrepresented as being the original software. 23 3. This notice may not be removed or altered from any source distribution. 24 25 Alexey Yakovenko waker@users.sourceforge.net 26 */ 27 #ifndef __VOLUME_H 28 #define __VOLUME_H 29 30 void 31 volume_set_db (float dB); 32 33 float 34 volume_get_db (void); 35 36 void 37 volume_set_amp (float amp); 38 39 float 40 volume_get_amp (void); 41 42 float 43 db_to_amp (float dB); 44 45 float 46 amp_to_db (float amp); 47 48 float 49 volume_get_min_db (void); 50 51 void 52 audio_set_mute (int mute); 53 54 int 55 audio_is_mute (void); 56 57 #endif // __VOLUME_H 58