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/*
* FOXMP3
* Copyright (c) 2006 acmesystems.it - john@acmesystems.it
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
*
* Feedback, Bugs... info@acmesystems.it
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/poll.h>
#include <signal.h>
#include "lib/mp3.h"
STATE states[MAX_STATE_COUNT];
static EVENT events[MAX_EVENT_COUNT];
static TRANSITION transitions[MAX_TRANSITION_COUNT];
static int transition_count = 0;
int state_current = MP3_STATE_STARTUP;
static int state_previous = MP3_STATE_NONE;
static int shutdown = 0;
void state_setup(void){
EVENT_ADD(MP3_EVENT_TIMEOUT, "Timeout");
EVENT_ADD(MP3_EVENT_FILE, "File");
EVENT_ADD(MP3_EVENT_STREAM, "Stream");
EVENT_ADD(MP3_EVENT_STOP, "Stop");
EVENT_ADD(MP3_EVENT_ERROR, "Error");
EVENT_ADD(MP3_EVENT_SHUTDOWN, "Shutdown");
EVENT_ADD(MP3_EVENT_END, "End");
STATE_ADD(MP3_STATE_STARTUP, "Startup", state_startup_enter, NULL);
STATE_ADD(MP3_STATE_IDLE, "Idle", state_idle_enter, NULL);
STATE_ADD(MP3_STATE_FILE_START, "File startup", state_file_startup_enter, state_file_startup_leave);
STATE_ADD(MP3_STATE_FILE_HANDLE, "File handle", state_file_handle_enter, state_file_handle_leave);
STATE_ADD(MP3_STATE_STREAM_START, "Stream start", state_stream_startup_enter, state_stream_startup_leave);
STATE_ADD(MP3_STATE_STREAM_HANDLE, "Stream handle", state_stream_handle_enter, state_stream_handle_leave);
STATE_ADD(MP3_STATE_ERROR, "Error", state_error_enter, NULL);
STATE_ADD(MP3_STATE_SHUTDOWN, "Shutdown", state_shutdown_enter, NULL);
TRANSITION_ADD(MP3_STATE_STARTUP, MP3_EVENT_TIMEOUT, MP3_STATE_IDLE);
TRANSITION_ADD(MP3_STATE_IDLE, MP3_EVENT_TIMEOUT, MP3_STATE_IDLE);
TRANSITION_ADD(MP3_STATE_IDLE, MP3_EVENT_FILE, MP3_STATE_FILE_START);
TRANSITION_ADD(MP3_STATE_IDLE, MP3_EVENT_STREAM, MP3_STATE_STREAM_START);
TRANSITION_ADD(MP3_STATE_FILE_START, MP3_EVENT_TIMEOUT, MP3_STATE_FILE_HANDLE);
TRANSITION_ADD(MP3_STATE_FILE_START, MP3_EVENT_ERROR, MP3_STATE_ERROR);
TRANSITION_ADD(MP3_STATE_FILE_HANDLE, MP3_EVENT_TIMEOUT, MP3_STATE_FILE_HANDLE);
TRANSITION_ADD(MP3_STATE_FILE_HANDLE, MP3_EVENT_END, MP3_STATE_IDLE);
TRANSITION_ADD(MP3_STATE_FILE_HANDLE, MP3_EVENT_ERROR, MP3_STATE_ERROR);
TRANSITION_ADD(MP3_STATE_FILE_HANDLE, MP3_EVENT_FILE, MP3_STATE_FILE_START);
TRANSITION_ADD(MP3_STATE_FILE_HANDLE, MP3_EVENT_STOP, MP3_STATE_IDLE);
TRANSITION_ADD(MP3_STATE_FILE_HANDLE, MP3_EVENT_STREAM, MP3_STATE_STREAM_START);
TRANSITION_ADD(MP3_STATE_STREAM_START, MP3_EVENT_TIMEOUT, MP3_STATE_STREAM_HANDLE);
TRANSITION_ADD(MP3_STATE_STREAM_START, MP3_EVENT_ERROR, MP3_STATE_ERROR);
TRANSITION_ADD(MP3_STATE_STREAM_HANDLE, MP3_EVENT_TIMEOUT, MP3_STATE_STREAM_HANDLE);
TRANSITION_ADD(MP3_STATE_STREAM_HANDLE, MP3_EVENT_STOP, MP3_STATE_IDLE);
TRANSITION_ADD(MP3_STATE_STREAM_HANDLE, MP3_EVENT_ERROR, MP3_STATE_ERROR);
TRANSITION_ADD(MP3_STATE_STREAM_HANDLE, MP3_EVENT_FILE, MP3_STATE_FILE_START);
TRANSITION_ADD(MP3_STATE_STREAM_HANDLE, MP3_EVENT_STREAM, MP3_STATE_STREAM_START);
TRANSITION_ADD(MP3_STATE_ERROR, MP3_EVENT_TIMEOUT, MP3_STATE_IDLE);
TRANSITION_ADD(MP3_STATE_DEFAULT, MP3_EVENT_ERROR, MP3_STATE_ERROR);
TRANSITION_ADD(MP3_STATE_DEFAULT, MP3_EVENT_SHUTDOWN, MP3_STATE_SHUTDOWN);
state_startup_enter(0, 0, NULL);
};
void state_transition(int transition, int event, EVENT_PARAM *param){
state_previous = state_current;
state_current = transitions[transition].new_state;
if(state_previous != state_current){
printf("\n -- Transition %s -> %s\n",
states[state_previous].name,
states[state_current].name);
};
if(states[state_previous].leave != NULL)
states[state_previous].leave(state_current, event);
if(states[state_current].enter != NULL)
states[state_current].enter(state_previous, event, param);
if(param){
if(param->text){
free(param->text);
};
free(param);
};
};
void state_event(int event, EVENT_PARAM *param){
int i = 0;
if(event != MP3_EVENT_TIMEOUT){
printf("\n -- Got event %s (%d) in state %s (%d)\n",
events[event].name,
event,
states[state_current].name,
state_current);
};
for(i = 0; i < transition_count; i++){
if((transitions[i].old_state == state_current)
&& (transitions[i].event == event)){
state_transition(i, event, param);
return;
};
};
for(i = 0; i < transition_count; i++){
if((transitions[i].old_state == MP3_STATE_DEFAULT)
&& (transitions[i].event == event)){
state_transition(i, event, param);
return;
};
};
if(param){
if(param->text){
free(param->text);
};
free(param);
};
printf("Event %s not handled in state %s\n", events[event].name, states[state_current].name);
};
void state_mainloop(void){
while(1){
if(shutdown){
state_event(MP3_EVENT_SHUTDOWN, NULL);
};
mp3_nix_socket_handle();
mp3_tcp_socket_handle();
if(state_current == MP3_STATE_IDLE){
poll(0, 0, 200);
} else {
poll(0, 0, 1);
};
state_event(MP3_EVENT_TIMEOUT, NULL);
};
};
EVENT_PARAM* state_new_event(unsigned char *text, int numeric){
EVENT_PARAM *p = (EVENT_PARAM*)malloc(sizeof(EVENT_PARAM));
if(text){
p->text = strdup(text);
} else {
p->text = NULL;
};
p->numeric = numeric;
return p;
};
void sig_handler(int sig){
shutdown = 1;
};
int main(int argc, char **argv) {
unsigned char daemonize = 1;
printf("\n\n");
printf("ALPMP3 - MP3 Statemachine v1.0\n");
if(argc > 1){
if(!strcmp(argv[1], "--no-daemon")){
daemonize = 0;
} else {
printf("I am now going to daemonize. If you want me to stay in ");
printf("the foreground, add the parameter --no-daemon.\n");
};
};
if(daemonize){
daemon(0, 0);
printf("----------------------------------------\n\n");
printf("Made by openwrt.org (blogic@openwrt.org)\n");
printf("\n");
};
signal(SIGINT, sig_handler);
state_setup();
state_mainloop();
return 0;
}
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