131 lines
4.6 KiB
C
131 lines
4.6 KiB
C
/* $Id$
|
|
******************************************************************************
|
|
|
|
Fax program for ISDN.
|
|
|
|
Copyright (C) 1998 Andreas Beck [becka@ggi-project.org]
|
|
Copyright (C) 1998 Morten Rolland [Morten.Rolland@asker.mail.telia.com]
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a
|
|
copy of this software and associated documentation files (the "Software"),
|
|
to deal in the Software without restriction, including without limitation
|
|
the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
and/or sell copies of the Software, and to permit persons to whom the
|
|
Software is furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
******************************************************************************
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <ifax/ifax.h>
|
|
|
|
int send_to_audio_construct(ifax_modp self,va_list args);
|
|
int pulsegen_construct(ifax_modp self,va_list args);
|
|
int sinegen_construct(ifax_modp self,va_list args);
|
|
int scrambler_construct(ifax_modp self, va_list args);
|
|
int modulator_V29_construct(ifax_modp self, va_list args);
|
|
int fskdemod_construct(ifax_modp self, va_list args);
|
|
int fskmod_construct(ifax_modp self, va_list args);
|
|
int decode_serial_construct(ifax_modp self, va_list args);
|
|
int encode_serial_construct(ifax_modp self, va_list args);
|
|
int debug_construct(ifax_modp self, va_list args);
|
|
#include <ifax/modules/replicate.h>
|
|
|
|
ifax_module_id IFAX_TOAUDIO;
|
|
ifax_module_id IFAX_PULSEGEN;
|
|
ifax_module_id IFAX_SINEGEN;
|
|
ifax_module_id IFAX_REPLICATE;
|
|
ifax_module_id IFAX_SCRAMBLER;
|
|
ifax_module_id IFAX_MODULATORV29;
|
|
ifax_module_id IFAX_FSKDEMOD;
|
|
ifax_module_id IFAX_FSKMOD;
|
|
ifax_module_id IFAX_DECODE_SERIAL;
|
|
ifax_module_id IFAX_ENCODE_SERIAL;
|
|
ifax_module_id IFAX_DEBUG;
|
|
|
|
void setup_all_modules(void)
|
|
{
|
|
IFAX_TOAUDIO = ifax_register_module_class("Audio output",send_to_audio_construct);
|
|
IFAX_PULSEGEN = ifax_register_module_class("Square wave generator",pulsegen_construct);
|
|
IFAX_SINEGEN = ifax_register_module_class("Sine wave generator",sinegen_construct);
|
|
IFAX_REPLICATE = ifax_register_module_class("Replicator",replicate_construct);
|
|
IFAX_FSKDEMOD = ifax_register_module_class("FSK demodulator",fskdemod_construct);
|
|
IFAX_FSKMOD = ifax_register_module_class("FSK modulator",fskmod_construct);
|
|
IFAX_DECODE_SERIAL= ifax_register_module_class("Serializer",decode_serial_construct);
|
|
IFAX_ENCODE_SERIAL= ifax_register_module_class("Serial encoder",encode_serial_construct);
|
|
IFAX_SCRAMBLER = ifax_register_module_class("Bitstream scrambler",scrambler_construct);
|
|
IFAX_MODULATORV29 = ifax_register_module_class("V.29 Modulator 9600",modulator_V29_construct);
|
|
IFAX_DEBUG = ifax_register_module_class("Debugger",debug_construct);
|
|
}
|
|
|
|
void transmit_carrier(void)
|
|
{
|
|
ifax_modp toaudio,square,sine,replicate;
|
|
char data;
|
|
int cnt;
|
|
|
|
/* Replicate the incoming signal. */
|
|
replicate=ifax_create_module(IFAX_REPLICATE);
|
|
|
|
/* Generate an square wave of 0.5s on, 3s off - CNG */
|
|
square=ifax_create_module(IFAX_PULSEGEN, SAMPLES_PER_SECOND/2,
|
|
3*SAMPLES_PER_SECOND);
|
|
|
|
/* Generate 1100Hz */
|
|
sine=ifax_create_module(IFAX_SINEGEN, 1100);
|
|
|
|
/* Test - go to stdout */
|
|
toaudio=ifax_create_module(IFAX_TOAUDIO, write, 1);
|
|
ifax_command(replicate,CMD_REPLICATE_ADD,square);
|
|
square->sendto=sine;
|
|
sine ->sendto=toaudio;
|
|
|
|
/* Feed in dummy input data. */
|
|
for(cnt=0;cnt<10*SAMPLES_PER_SECOND;cnt++)
|
|
ifax_handle_input(replicate,&data,1);
|
|
|
|
}
|
|
|
|
void test_modulator(void)
|
|
{
|
|
ifax_modp scrambler, modulator;
|
|
unsigned char data;
|
|
|
|
/* Test scrambler as a module */
|
|
scrambler = ifax_create_module(IFAX_SCRAMBLER);
|
|
|
|
/* Modulate into signed shorts */
|
|
modulator = ifax_create_module(IFAX_MODULATORV29);
|
|
|
|
scrambler->sendto = modulator;
|
|
|
|
/* Count from 0 to 20 and see what the scrambler/modulator says */
|
|
for ( data=0; data <= 20; data++ )
|
|
ifax_handle_input(scrambler,&data,1);
|
|
}
|
|
|
|
|
|
void main(int argc,char **argv)
|
|
{
|
|
setup_all_modules();
|
|
|
|
transmit_carrier();
|
|
}
|