131 lines
4.2 KiB
C
131 lines
4.2 KiB
C
/****************************************************************************
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* apps/audioutils/fmsynth/test/fmsynth_test.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdio.h>
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#include <stdint.h>
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#include <audioutils/fmsynth_eg.h>
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#include <audioutils/fmsynth_op.h>
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#include <audioutils/fmsynth.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define FS (48000)
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#define SOUNDFREQ (3000.f)
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#define TEST_LENGTH ((FS / 1000) * (10 + 20 + 16 + 5 + 30))
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static int16_t my_sample[TEST_LENGTH];
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* name: set_levels
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****************************************************************************/
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static fmsynth_eglevels_t *set_levels(fmsynth_eglevels_t *level,
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int atk_lvl, int atk_peri,
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int decbrk_lvl, int decbrk_peri,
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int dec_lvl, int dec_peri,
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int sus_lvl, int sus_peri,
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int rel_lvl, int rel_peri)
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{
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level->attack.level = atk_lvl;
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level->attack.period_ms = atk_peri;
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level->decaybrk.level = decbrk_lvl;
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level->decaybrk.period_ms = decbrk_peri;
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level->decay.level = dec_lvl;
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level->decay.period_ms = dec_peri;
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level->sustain.level = sus_lvl;
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level->sustain.period_ms = sus_peri;
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level->release.level = rel_lvl;
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level->release.period_ms = rel_peri;
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return level;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* name: main
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****************************************************************************/
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int main(void)
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{
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int phase_time;
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fmsynth_eglevels_t levels;
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fmsynth_sound_t *snd1;
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fmsynth_op_t *envop;
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fmsynth_op_t *fbop;
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/* Initialize FM synthesizer */
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fmsynth_initialize(FS);
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/* Operator setup */
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envop = fmsynthop_create();
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fbop = fmsynthop_create();
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set_levels(&levels, 0.12f, 10, 0.06f, 20, 0.1f, 16, 0.1f, 5, 0.f, 70);
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fmsynthop_set_envelope(envop, &levels);
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fmsynthop_select_opfunc(envop, FMSYNTH_OPFUNC_SIN);
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fmsynthop_select_opfunc(fbop, FMSYNTH_OPFUNC_SIN);
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fmsynthop_bind_feedback(fbop, fbop, 0.6f);
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fmsynthop_parallel_subop(envop, fbop);
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/* Sound setup */
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snd1 = fmsynthsnd_create();
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fmsynthsnd_set_operator(snd1, envop);
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fmsynthsnd_set_soundfreq(snd1, SOUNDFREQ);
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fmsynth_rendering(snd1, my_sample, TEST_LENGTH, 1, NULL, 0);
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for (int i = 0; i < TEST_LENGTH; i++)
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{
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printf("%d\n", my_sample[i]);
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}
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fmsynthop_delete(envop);
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fmsynthop_delete(fbop);
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fmsynthsnd_delete(snd1);
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return 0;
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}
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