kopia lustrzana https://github.com/OpenRTX/OpenRTX
107 wiersze
3.3 KiB
C
107 wiersze
3.3 KiB
C
/***************************************************************************
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* Copyright (C) 2021 - 2023 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN *
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* Frederik Saraci IU2NRO *
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* Silvano Seva IU2KWO *
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* *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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// Test private methods
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#define private public
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#include <audio_stream.h>
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#include <math.h>
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#include <stdio.h>
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#define BUF_LEN 4096 * 10
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#define AMPLITUDE 20000
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#define PI 3.14159
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#define SAMPLE_RATE 48000
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#define FREQUENCY 440
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/**
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* Test sine playback
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*/
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int16_t buffer[BUF_LEN] = { 0 };
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void fill_buffer_sine(int16_t *buffer, size_t len)
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{
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for(size_t i = 0; i < len; i++)
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{
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buffer[i] = AMPLITUDE * sin(2 * PI * i *
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((float) FREQUENCY / SAMPLE_RATE));
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}
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}
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void play_sine_linear()
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{
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int id = 0;
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// Create 440 Hz sine wave
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fill_buffer_sine(buffer, BUF_LEN);
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// Play back sine wave
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for(int i = 0; i < 10; i++)
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{
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id = outputStream_start(SINK_SPK,
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PRIO_PROMPT,
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buffer,
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BUF_LEN,
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BUF_LINEAR,
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SAMPLE_RATE);
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};
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outputStream_sync(id, false);
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// Sync, flush, terminate
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outputStream_stop(id);
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outputStream_terminate(id);
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}
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void play_sine_circular()
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{
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int id = 0;
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stream_sample_t *buf = NULL;
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// Fill first half of buffer with sine
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fill_buffer_sine(buffer, BUF_LEN / 2);
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// Play back sine wave
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id = outputStream_start(SINK_SPK,
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PRIO_PROMPT,
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buffer,
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BUF_LEN,
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BUF_CIRC_DOUBLE,
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SAMPLE_RATE);
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for(int i = 0; i < 10; i++)
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{
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buf = outputStream_getIdleBuffer(id);
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fill_buffer_sine(buf, BUF_LEN / 2);
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outputStream_sync(id, true);
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}
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// Sync, flush, terminate
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outputStream_stop(id);
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outputStream_terminate(id);
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}
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int main()
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{
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//play_sine_linear();
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play_sine_circular();
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}
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