128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/****************************************************************************
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* apps/audioutils/fmsynth/test/fmsynth_eg_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 <audioutils/fmsynth_eg.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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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* name: state_name
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****************************************************************************/
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static const char *state_name(int s)
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{
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switch (s)
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{
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case EGSTATE_ATTACK:
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return "Attack ";
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case EGSTATE_DECAYBREAK:
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return "DecayBreak";
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case EGSTATE_DECAY:
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return "Decay ";
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case EGSTATE_SUSTAIN:
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return "Sustain ";
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case EGSTATE_RELEASE:
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return "Release ";
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case EGSTATE_RELEASED:
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case -1:
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return "RELEASED..";
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}
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return "";
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}
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/****************************************************************************
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* name: dump_eg
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****************************************************************************/
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static void dump_eg(fmsynth_eg_t *env)
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{
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int i;
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fmsynth_egparam_t *last = &env->state_params[EGSTATE_RELEASED];
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printf("===== STATE : %s =======\n", state_name(env->state));
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for (i = -1; i < EGSTATE_RELEASED; i++)
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{
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printf(" [%s] %5d <--------------> [%s] %5d\n",
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state_name(i), last->initval,
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state_name(i + 1), env->state_params[i + 1].initval);
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printf(" per %d\n", env->state_params[i + 1].period);
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printf(" dlt %d\n", env->state_params[i + 1].diff2next);
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last = &env->state_params[i + 1];
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}
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printf("\n");
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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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fmsynth_eg_t *eg;
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fmsynth_eglevels_t levels;
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levels.attack.level = 0.6f;
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levels.attack.period_ms = 10;
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levels.decaybrk.level = 0.3f;
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levels.decaybrk.period_ms = 20;
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levels.decay.level = 0.5f;
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levels.decay.period_ms = 15;
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levels.sustain.level = 0.65f;
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levels.sustain.period_ms = 5;
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levels.release.level = 0.f;
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levels.release.period_ms = 70;
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eg = fmsyntheg_create();
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fmsyntheg_set_param(eg, FS, &levels);
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dump_eg(eg);
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fmsyntheg_start(eg);
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dump_eg(eg);
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while (eg->state != EGSTATE_RELEASED)
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{
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printf("%d\n", fmsyntheg_operate(eg));
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}
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fmsyntheg_delete(eg);
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return 0;
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}
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