kopia lustrzana https://github.com/OpenRTX/OpenRTX
74 wiersze
2.7 KiB
C
74 wiersze
2.7 KiB
C
/***************************************************************************
|
|
* Copyright (C) 2021 by Federico Amedeo Izzo IU2NUO, *
|
|
* Niccolò Izzo IU2KIN, *
|
|
* Frederik Saraci IU2NRO, *
|
|
* Silvano Seva IU2KWO *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 3 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/> *
|
|
***************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <interfaces/delays.h>
|
|
#include <interfaces/audio.h>
|
|
#include <interfaces/audio_path.h>
|
|
#include <interfaces/audio_stream.h>
|
|
#include <interfaces/platform.h>
|
|
#include <dsp.h>
|
|
|
|
int main()
|
|
{
|
|
platform_init();
|
|
|
|
filter_state_t dcrState;
|
|
dsp_resetFilterState(&dcrState);
|
|
|
|
static const size_t numSamples = 45*1024; // 90kB
|
|
stream_sample_t *sampleBuf = ((stream_sample_t *) malloc(numSamples *
|
|
sizeof(stream_sample_t)));
|
|
|
|
audio_enableMic();
|
|
streamId id = inputStream_start(SOURCE_MIC, PRIO_TX, sampleBuf, numSamples,
|
|
BUF_LINEAR, 8000);
|
|
|
|
sleepFor(3u, 0u);
|
|
platform_ledOn(GREEN);
|
|
|
|
dataBlock_t audio = inputStream_getData(id);
|
|
|
|
platform_ledOff(GREEN);
|
|
platform_ledOn(RED);
|
|
sleepFor(10u, 0u);
|
|
|
|
// Pre-processing gain
|
|
for(size_t i = 0; i < audio.len; i++) audio.data[i] <<= 3;
|
|
|
|
// DC removal
|
|
dsp_dcRemoval(&dcrState, audio.data, audio.len);
|
|
|
|
// Post-processing gain
|
|
for(size_t i = 0; i < audio.len; i++) audio.data[i] *= 10;
|
|
|
|
|
|
uint16_t *ptr = ((uint16_t *) audio.data);
|
|
for(size_t i = 0; i < audio.len; i++)
|
|
{
|
|
iprintf("%04x ", ptr[i]);
|
|
}
|
|
|
|
while(1) ;
|
|
|
|
return 0;
|
|
}
|