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aisdecoder/src/main.c

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/*
* main.cpp -- AIS Decoder
*
* Copyright (C) 2013
* Astra Paging Ltd / AISHub (info@aishub.net)
*
* AISDecoder 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 2 of the License, or
* (at your option) any later version.
*
* AISDecoder uses parts of GNUAIS project (http://gnuais.sourceforge.net/)
*
*/
#ifndef WIN32
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#include <getopt.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include "config.h"
#include "sounddecoder.h"
#include "callbacks.h"
#ifdef HAVE_ALSA
#include "alsaaudio/alsaaudio.h"
#endif
#ifndef WIN32
#ifdef HAVE_ALSA
#define HELP_AUDIO_DEVICE "-D\tALSA input device\n\tUse '-D list' to see all available system devices.\n"
#else
#define HELP_AUDIO_DEVICE ""
#endif
#ifdef HAVE_PULSEAUDIO
#ifdef HAVE_ALSA
#define HELP_AUDIO_DRIVERS "pulse,alsa,file"
#else
#define HELP_AUDIO_DRIVERS "pulse,file"
#endif
#else
#ifdef HAVE_ALSA
#define HELP_AUDIO_DRIVERS "alsa,file"
#endif
#endif
#else
#define HELP_AUDIO_DRIVERS "winmm,file"
#define HELP_AUDIO_DEVICE "-D\tNumeric value for input device (default WAVE_MAPPER)\n\tUse '-D list' to see all available system devices.\n"
#endif
#define HELP_MSG \
"Usage: " PROJECT_NAME " -h hostname -p port -a " HELP_AUDIO_DRIVERS " [-f /path/file.raw] [-l]\n\n"\
"-h\tDestination host or IP address\n"\
"-p\tDestination UDP port\n"\
"-a\tAudio driver [" HELP_AUDIO_DRIVERS "]\n" HELP_AUDIO_DEVICE\
"-c\tSound channels [stereo,mono,left,right] (default stereo)\n"\
"-f\tFull path to 48kHz raw audio file\n"\
"-l\tLog sound levels to console (stderr)\n"\
"-d\tLog NMEA sentences to console (stderr)\n"\
"-H\tDisplay this help\n"
#define MAX_BUFFER_LENGTH 2048
static char buffer[MAX_BUFFER_LENGTH];
static unsigned int buffer_count=0;
#ifdef WIN32
WSADATA wsaData;
void printInDevices() {
unsigned int count = waveInGetNumDevs();
WAVEINCAPS caps;
unsigned int i = 0;
for (i = 0; i < count; i++) {
if (waveInGetDevCaps(i, &caps, sizeof(caps)) == MMSYSERR_NOERROR) {
fprintf(stderr, "%u: %s\r\n", i, caps.szPname);
} else {
fprintf(stderr, "Can't read devices\r\n");
exit(EXIT_FAILURE);
}
}
}
#endif
#ifdef HAVE_ALSA
void printInDevices() {
char **hints;
/* Enumerate sound devices */
int err = snd_device_name_hint(0, "pcm", (void***)&hints);
if (err != 0) {
fprintf(stderr, "Can't read data\n");
exit(EXIT_FAILURE);
}
char** n = hints;
while (*n != NULL) {
char *name = snd_device_name_get_hint(*n, "NAME");
char *desc = snd_device_name_get_hint(*n, "DESC");
char *type = snd_device_name_get_hint(*n, "IOID");
if (name != NULL && desc != NULL) {
if (type == NULL || !strcmp(type, "Input")) {
printf("%s\n%s: <%s>\n\n", desc, type == NULL ? "Input/Output" : "Input",name);
}
}
if (name != NULL) free(name);
if (name != NULL) free(desc);
if (name != NULL) free(type);
n++;
}
//Free hint buffer too
snd_device_name_free_hint((void**)hints);
snd_config_update_free_global();
}
#endif
static int sock;
static struct addrinfo* addr=NULL;
static int initSocket(const char *host, const char *portname);
static int show_levels=0;
static int debug_nmea=0;
void sound_level_changed(float level, int channel, unsigned char high) {
if (high != 0)
fprintf(stderr, "Level on ch %d too high: %.0f %%\n", channel, level);
else
fprintf(stderr, "Level on ch %d: %.0f %%\n", channel, level);
}
void nmea_sentence_received(const char *sentence,
unsigned int length,
unsigned char sentences,
unsigned char sentencenum) {
if (sentences == 1) {
if (sendto(sock, sentence, length, 0, addr->ai_addr, addr->ai_addrlen) == -1) abort();
if (debug_nmea) fprintf(stderr, "%s", sentence);
} else {
if (buffer_count + length < MAX_BUFFER_LENGTH) {
memcpy(&buffer[buffer_count], sentence, length);
buffer_count += length;
} else {
buffer_count=0;
}
if (sentences == sentencenum && buffer_count > 0) {
if (sendto(sock, buffer, buffer_count, 0, addr->ai_addr, addr->ai_addrlen) == -1) abort();
if (debug_nmea) fprintf(stderr, "%s", buffer);
buffer_count=0;
};
}
}
#define CMD_PARAMS_COMMON "h:p:a:lHf:dc:"
#ifndef WIN32
#ifdef HAVE_ALSA
#define CMD_PARAMS CMD_PARAMS_COMMON "D:"
#else
#define CMD_PARAMS CMD_PARAMS_COMMON
#endif
#else
#define CMD_PARAMS CMD_PARAMS_COMMON "D:"
#endif
int main(int argc, char *argv[]) {
Sound_Channels channels = SOUND_CHANNELS_STEREO;
char *host, *port, *file_name=NULL;
const char *params=CMD_PARAMS;
int alsa=0, pulse=0, file=0, winmm=0;
int hfnd=0, pfnd=0, afnd=0;
#ifdef WIN32
unsigned int deviceId=WAVE_MAPPER;
#endif
#ifdef HAVE_ALSA
char *alsaDevice=NULL;
#endif
int opt;
while ((opt = getopt(argc, argv, params)) != -1) {
switch (opt) {
case 'h':
host = optarg;
hfnd = 1;
break;
case 'p':
port = optarg;
pfnd = 1;
break;
case 'a':
#ifdef HAVE_PULSEAUDIO
pulse = strcmp(optarg, "pulse") == 0;
#endif
#ifdef HAVE_ALSA
alsa = strcmp(optarg, "alsa") == 0;
#endif
#ifdef WIN32
winmm = strcmp(optarg, "winmm") == 0;
#endif
file = strcmp(optarg, "file") == 0;
afnd = 1;
break;
case 'c':
if (!strcmp(optarg, "mono")) channels = SOUND_CHANNELS_MONO;
else if (!strcmp(optarg, "left")) channels = SOUND_CHANNELS_LEFT;
else if (!strcmp(optarg, "right")) channels = SOUND_CHANNELS_RIGHT;
break;
case 'l':
show_levels = 1;
break;
case 'f':
file_name = optarg;
break;
case 'd':
debug_nmea = 1;
break;
#ifdef WIN32
case 'D':
if (!strcmp(optarg, "list")) {
printInDevices();
return EXIT_SUCCESS;
} else {
deviceId = atoi(optarg);
}
break;
#endif
#ifdef HAVE_ALSA
case 'D':
if (!strcmp(optarg, "list")) {
printInDevices();
return EXIT_SUCCESS;
} else {
alsaDevice = optarg;
}
break;
#endif
case 'H':
default:
fprintf(stderr, HELP_MSG);
return EXIT_SUCCESS;
break;
}
}
if (argc < 2) {
fprintf(stderr, HELP_MSG);
return EXIT_FAILURE;
}
if (!hfnd) {
fprintf(stderr, "Host is not set\n");
return EXIT_FAILURE;
}
if (!pfnd) {
fprintf(stderr, "Port is not set\n");
return EXIT_FAILURE;
}
if (!afnd) {
fprintf(stderr, "Audio driver is not set\n");
return EXIT_FAILURE;
}
if (!alsa && !pulse && !winmm && !file) {
fprintf(stderr, "Invalid audio driver\n");
return EXIT_FAILURE;
}
if (!initSocket(host, port)) {
return EXIT_FAILURE;
}
if (show_levels) on_sound_level_changed=sound_level_changed;
on_nmea_sentence_received=nmea_sentence_received;
Sound_Driver driver = DRIVER_FILE;
#ifdef HAVE_ALSA
if (alsa) driver = DRIVER_ALSA;
#endif
#ifdef HAVE_PULSEAUDIO
if (pulse) driver = DRIVER_PULSE;
#endif
int OK=0;
#ifdef WIN32
if (!file) driver = DRIVER_WINMM;
OK=initSoundDecoder(channels, driver, file_name, deviceId);
#else
#ifdef HAVE_ALSA
OK=initSoundDecoder(channels, driver, file_name, alsaDevice);
#else
OK=initSoundDecoder(channels, driver, file_name);
#endif
#endif
int stop=0;
if (OK) {
runSoundDecoder(&stop);
} else {
fprintf(stderr, "%s\n", errorSoundDecoder);
}
freeSoundDecoder();
freeaddrinfo(addr);
#ifdef WIN32
WSACleanup();
#endif
return 0;
}
int initSocket(const char *host, const char *portname) {
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family=AF_UNSPEC;
hints.ai_socktype=SOCK_DGRAM;
hints.ai_protocol=IPPROTO_UDP;
#ifndef WIN32
hints.ai_flags=AI_ADDRCONFIG;
#else
int iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != 0) {
printf("WSAStartup failed: %d\n", iResult);
return 0;
}
#endif
int err=getaddrinfo(host, portname, &hints, &addr);
if (err!=0) {
fprintf(stderr, "Failed to resolve remote socket address!\n");
#ifdef WIN32
WSACleanup();
#endif
return 0;
}
sock=socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
if (sock==-1) {
fprintf(stderr, "%s",strerror(errno));
#ifdef WIN32
WSACleanup();
#endif
return 0;
}
return 1;
}
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