kopia lustrzana https://github.com/OpenRTX/OpenRTX
71 wiersze
2.6 KiB
C
71 wiersze
2.6 KiB
C
/***************************************************************************
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* Copyright (C) 2021 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 <interfaces/delays.h>
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#include <interfaces/audio.h>
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#include <interfaces/audio_path.h>
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#include <interfaces/audio_stream.h>
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#include <interfaces/platform.h>
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#include <dsp.h>
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int main()
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{
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platform_init();
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static const size_t numSamples = 45*1024; // 90kB
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stream_sample_t *sampleBuf = ((stream_sample_t *) malloc(numSamples *
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sizeof(stream_sample_t)));
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audio_enableMic();
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streamId id = inputStream_start(SOURCE_MIC, PRIO_TX, sampleBuf, numSamples,
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BUF_LINEAR, 8000);
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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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// Pre-processing gain
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for(size_t i = 0; i < audio.len; i++) audio.data[i] <<= 3;
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// DC removal
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dsp_dcRemoval(audio.data, audio.len);
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// Post-processing gain
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for(size_t i = 0; i < audio.len; i++) audio.data[i] *= 10;
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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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{
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iprintf("%04x ", ptr[i]);
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}
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while(1) ;
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return 0;
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}
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