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smartsdr-dsp/DSP_API/main.c
Stephen Hicks, N5AC cea38b61ea Initial load of CODEC2/FreeDV software and wrapper
2014-09-05 21:48:37 -05:00

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/* *****************************************************************************
* main.c 2014 SEP 01
*
* Author: Graham / KE9H
* Date created: August 5, 2014
*
* Wrapper program for "Embedded FreeDV" including CODEC2.
*
* Derived, in part from code provided by David Rowe under LGPL in:
* freedv_rx.c
* freedv_tx.c
*
* Calls and API defined by David Rowe in
* freedv_api.c
* freedv_api.h
*
* Portions of this file are Copyright (C) 2014 David Rowe
*
* *****************************************************************************
*
* Copyright (C) 2014 FlexRadio Systems.
* 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/>.
*
* *****************************************************************************
* TODO
* distinguish between rx data and tx data packets?
* discard rx data and tx data packet if wrong type?
* get call for S/N
*
*
*
**************************************************************************** */
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h> // usleep()
#include <netinet/in.h> // ntohl()
#include <signal.h>
#include <execinfo.h>
#include <ucontext.h>
#include "smartsdr_dsp_api.h"
#include "common.h"
const char* APP_NAME = "FreeDV"; // Name of Application
const char* CFG_FILE = "FreeDV.cfg"; // Name of associated configuration file
/* This structure mirrors the one found in /usr/include/asm/ucontext.h */
typedef struct _sig_ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
struct sigcontext uc_mcontext;
sigset_t uc_sigmask;
} sig_ucontext_t;
extern char *strsignal (int __sig);
void segfault_sigaction(int signal, siginfo_t *si, void *arg)
{
void * array[50];
char ** messages;
int size, i;
sig_ucontext_t * uc;
uc = (sig_ucontext_t *)arg;
fprintf(stderr, "\r\n\033[41;37m Caught signal %d (%s) at address 0x%08X\033[m\n", signal, strsignal(signal), (uint32)si->si_addr);
size = backtrace(array, 50);
messages = backtrace_symbols(array, size);
/* skip first stack frame (points here) */
for (i = 2; i < size && messages != NULL; ++i)
{
printf("%d-",i);
fprintf(stderr, "TRACE: (%d) %s @ ", i, messages[i]);
// Get's line number of fault
char syscom[256];
sprintf(syscom,"eu-addr2line -e %s %p","./freedv" , array[i]);
system(syscom);
}
free(messages);
exit(EXIT_FAILURE);
}
void setup_segfault_handler(void)
{
struct sigaction sa;
memset(&sa, 0, sizeof(struct sigaction));
sigemptyset(&sa.sa_mask);
sa.sa_sigaction = segfault_sigaction;
sa.sa_flags = SA_RESTART | SA_SIGINFO;
sigaction(SIGSEGV, &sa, NULL);
// ignore broken pipes
signal(SIGPIPE, SIG_IGN);
}
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// main()
int main(void) {
setup_segfault_handler();
SmartSDR_API_Init();
// } // End of Receiver CODER processing
// else // Transmit ...
// {
// // If 'initial' flag, clear buffers TX1, TX2, TX3, TX4
// if(initial_tx)
// {
// TX1_cb->start = 0; // Clear buffers TX1, TX2, TX3, TX4
// TX1_cb->end = 0;
// TX2_cb->start = 0;
// TX2_cb->end = 0;
// TX3_cb->start = 0;
// TX3_cb->end = 0;
// TX4_cb->start = 0;
// TX4_cb->end = 0;
// }
//
// // Set the receive 'initial' flag
// initial_rx = 1;
//
// // Check for new transmit input packet & move to TX1_cb.
// // TODO - If receive packet, discard here?
//
// if(InputTxPacketReady)
// {
// for(i=0;i<128;i++)
// {
// // fsample = Get next float from packet;
// fsample = ntohl(fsample); // TODO issues with/without a cast ???
// cbWriteFloat(RX1_cb, fsample);
// }
// }
//
//
// // Check for >= 384 samples in TX1_cb and spin downsampler
// // Convert to shorts and move to TX2_cb.
// if(cfbContains(TX1_cb) >= 384)
// {
// for(i=0 ; i<384 ; i++)
// {
// float_in[i] = cbReadFloat(TX1_cb);
// }
//
// fdmdv_24_to_8(float_out, float_in, 384);
//
// for(i=0 ; i<128 ; i++)
// {
// cbWriteShort(TX2_cb, (short) float_out[i]*SCALE);
// }
//
// }
//
// // Check for >= 320 samples in TX2_cb and spin vocoder
// // Move output to TX3_cb.
// if(csbContains(RX2_cb) >= 320)
// {
// for( i=0 ; i<320 ; i++)
// {
// speech_in[i] = cbReadShort(TX2_cb);
// }
//
// freedv_tx(_freedvS, mod_out, speech_in);
//
// for( i=0 ; i<320 ; i++)
// {
// cbWriteShort(RX3_cb, mod_out[i]);
// }
// }
//
// // Check for >= 128 samples in TX3_cb, convert to float, scale
// // and spin the upsampler. Move output to TX4_cb.
//
// if(csbContains(TX3_cb) >= 128)
// {
// for( i=0 ; i<128 ; i++)
// {
// float_in[i] = ((float) cbReadShort(TX3_cb)) / SCALE;
// }
//
// fdmdv_8_to_24(float_out, float_in, 384);
//
// for( i=0 ; i<384 ; i++)
// {
// cbWriteFloat(TX4_cb, float_out[i]);
// }
// }
//
// // Check for >= 128 samples in TX4_cb. Form packet and
// // export.
// if(cfbContains(TX4_cb) >= 128)
// {
// for( i=0 ; i<128 ; i++)
// {
// // Set up the outbound packet
// fsample = htonl( cbReadFloat(RX4_cb) );
// // put the fsample into the outbound packet
// }
// }
//
// } // End of Transmit CODER processing
// } // End of CODER ON
usleep(5000);
// } // End of WHILE() loop
while(1) {
usleep(100000);
}
return 1;
}
// EoF =====-----
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