//synth.h: /* * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 * * This file is part of libroar a part of RoarAudio, * a cross-platform sound system for both, home and professional use. * See README for details. * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 3 * as published by the Free Software Foundation. * * libroar 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 software; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * NOTE for everyone want's to change something and send patches: * read README and HACKING! There a addition information on * the license of this document you need to read before you send * any patches. * * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc * or libpulse*: * The libs libroaresd, libroararts and libroarpulse link this lib * and are therefore GPL. Because of this it may be illigal to use * them with any software that uses libesd, libartsc or libpulse*. */ #ifndef _LIBROARDSP_SYNTH_H_ #define _LIBROARDSP_SYNTH_H_ #include "libroardsp.h" #define ROAR_SYNTH_FUNC_TYPE(name) float (*name)(float t, struct roar_synth_state * state) #define ROAR_SYNTH_FUNC_CAST(name) ((ROAR_SYNTH_FUNC_TYPE()) name) // SYNF -> Synthesis Function #define ROAR_SYNTH_SYNF_SINE ROAR_SYNTH_FUNC_CAST(sinf) struct roar_synth_state { int rate; struct roar_note_octave * note; ROAR_SYNTH_FUNC_TYPE(func); size_t pcmoffset; }; int roar_synth_init(struct roar_synth_state * state, struct roar_note_octave * note, int rate); int roar_synth_set_offset(struct roar_synth_state * state, size_t offset); int roar_synth_set_func (struct roar_synth_state * state, ROAR_SYNTH_FUNC_TYPE(func)); int roar_synth_pcmout_i16n(struct roar_synth_state * state, int16_t * out, size_t frames, int channels); int roar_synth_pcmout_i161(struct roar_synth_state * state, int16_t * out, size_t frames); #endif //ll