OpenRTX/platform/drivers/audio/inputStream_linux.c

94 wiersze
3.0 KiB
C

/***************************************************************************
* Copyright (C) 2021 - 2022 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 <interfaces/audio_stream.h>
#include <hwconfig.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
static stream_sample_t *buffer = NULL;
static size_t bufferLength = 0;
static bool first_half = true;
static FILE *baseband_file = NULL;
streamId inputStream_start(const enum AudioSource source,
const enum AudioPriority prio,
stream_sample_t * const buf,
const size_t bufLength,
const enum BufMode mode,
const uint32_t sampleRate)
{
(void) source;
(void) prio;
(void) mode;
(void) sampleRate;
buffer = buf;
bufferLength = bufLength;
baseband_file = fopen("./tests/unit/assets/M17_test_baseband_dc.raw", "rb");
if (!baseband_file)
{
perror("Error while reading file\n");
}
return -1;
}
dataBlock_t inputStream_getData(streamId id)
{
(void) id;
dataBlock_t block;
block.len = bufferLength / 2;
if (first_half)
{
first_half = false;
block.data = buffer;
}
else
{
first_half = true;
block.data = buffer + (bufferLength / 2);
}
size_t read_items = fread(block.data, 2, block.len, baseband_file);
if (read_items != block.len)
{
block.data = NULL;
return block;
}
return block;
}
void inputStream_stop(streamId id)
{
(void) id;
if(baseband_file == NULL) return;
fclose(baseband_file);
baseband_file = NULL;
}