* apps/include/audioutils/fmsynth.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_AUDIOUTILS_FMSYNTH_H
#define __INCLUDE_AUDIOUTILS_FMSYNTH_H
* Included Files
****************************************************************************/
#include <limits.h>
#include <stdint.h>
#include <audioutils/fmsynth_eg.h>
#include <audioutils/fmsynth_op.h>
* Pre-processor Definitions
****************************************************************************/
#define FMSYNTH_MAX_VOLUME (SHRT_MAX)
* Public Types
****************************************************************************/
typedef struct fmsynth_sound_s
{
int own_allocate;
int phase_time;
int max_phase_time;
int volume;
FAR fmsynth_op_t *operators;
FAR struct fmsynth_sound_s *next_sound;
} fmsynth_sound_t;
typedef CODE void (*fmsynth_tickcb_t)(unsigned long cbarg);
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
extern "C"
{
#endif
int fmsynth_initialize(int fs);
FAR fmsynth_sound_t *fmsynthsnd_create(void);
FAR fmsynth_sound_t *create_fmsynthsnd(FAR fmsynth_sound_t *);
void fmsynthsnd_stop(FAR fmsynth_sound_t *snd);
void fmsynthsnd_delete(FAR fmsynth_sound_t *snd);
int fmsynthsnd_set_operator(FAR fmsynth_sound_t *snd, FAR fmsynth_op_t *op);
void fmsynthsnd_set_soundfreq(FAR fmsynth_sound_t *snd, float freq);
void fmsynthsnd_set_volume(FAR fmsynth_sound_t *snd, float vol);
int fmsynthsnd_add_subsound(FAR fmsynth_sound_t *top,
FAR fmsynth_sound_t *sub);
int fmsynth_rendering(FAR fmsynth_sound_t *snd,
FAR int16_t *sample, int sample_num, int chnum,
fmsynth_tickcb_t cb, unsigned long cbarg);
#ifdef __cplusplus
}
#endif
#endif