69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/***************************************************************************
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* Copyright (C) 2021 - 2025 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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* 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "interfaces/delays.h"
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#include "interfaces/audio.h"
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#include "core/audio_path.h"
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#include "core/audio_stream.h"
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#include "interfaces/platform.h"
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#include "core/dsp.h"
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int main()
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{
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platform_init();
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struct dcBlock dcb;
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dsp_resetState(dcb);
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static const size_t numSamples = 45 * 1024; // 90kB
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void *sampleBuf = malloc(numSamples * sizeof(stream_sample_t));
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pathId pi = audioPath_request(SOURCE_MIC, SINK_MCU, PRIO_TX);
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streamId id = audioStream_start(pi, (stream_sample_t *)sampleBuf,
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numSamples, 8000,
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BUF_LINEAR | STREAM_INPUT);
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sleepFor(3u, 0u);
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platform_ledOn(GREEN);
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dataBlock_t audio = inputStream_getData(id);
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platform_ledOff(GREEN);
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platform_ledOn(RED);
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sleepFor(10u, 0u);
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for (size_t i = 0; i < audio.len; i++) {
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int16_t sample = dsp_dcBlockFilter(&dcb, audio.data[i]);
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audio.data[i] = sample * 32;
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}
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uint16_t *ptr = ((uint16_t *)audio.data);
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for (size_t i = 0; i < audio.len; i++)
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iprintf("%04x ", ptr[i]);
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while (1)
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;
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return 0;
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}
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