/*  Crystality Plugin - A plugin for remastering mp3 sound in realtime
 *
 *  Copyright (C) 2001 Rafal Bosak <gyver@fanthom.irc.pl>
 *
 * 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, MA  02111-1307  USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <gtk/gtk.h>
#include <signal.h>

#include "crystality.h"

int run_gui = 1;

#define CONFIG_FILE_NAME "/.crystalityrc"
int read_config(void)
{
    FILE *f;
    char *fname, *home;
    char n[60];
    int v;

    home = getenv("HOME");
    if (home == NULL) return -1;
    fname = malloc(strlen(home) + strlen(CONFIG_FILE_NAME) + 2);
    strcpy(fname, home);
    strcpy(fname + strlen(home), CONFIG_FILE_NAME);
//    fprintf(stderr, "reading %s\n", fname);
    if ((f = fopen(fname, "rt")) == NULL) {
	free(fname);
	return -1;
    }
    free(fname);

    while (fscanf(f, "%40s %i", n, &v) == 2){
//	fprintf(stderr, "<%s> %i\n",n, v);
	if (strcmp(n, "expander") == 0) bext_level = v;
	if (strcmp(n, "echo") == 0) echo_level = v;
	if (strcmp(n, "stereo") == 0) stereo_level = v;
	if (strcmp(n, "filter") == 0) filter_level = v;
	if (strcmp(n, "feedback") == 0) feedback_level = v;
	if (strcmp(n, "harmonics") == 0) harmonics_level = v;
    }

    return 1;
}

int write_config(void)
{
    FILE *f;
    char *fname, *home;

    home = getenv("HOME");
    if (home == NULL) return -1;
    fname = malloc(strlen(home) + strlen(CONFIG_FILE_NAME) + 2);
    strcpy(fname, home);
    strcpy(fname + strlen(home), CONFIG_FILE_NAME);
//    fprintf(stderr, "writing %s\n", fname);
    if ((f = fopen(fname, "wt")) == NULL) {
	free(fname);
	return -1;
    }
    free(fname);

    fprintf(f, "expander %i\n", bext_level);
    fprintf(f, "echo %i\n", echo_level);
    fprintf(f, "stereo %i\n", stereo_level);
    fprintf(f, "filter %i\n", filter_level);
    fprintf(f, "feedback %i\n", feedback_level);
    fprintf(f, "harmonics %i\n", harmonics_level);

    return 1;
}

void clean_exit(int status){
    cleanup();
    if (run_gui) gtk_main_quit();
    exit(status);
}

void *process_sound_stdio()
{
#define BUF_SIZE 4096
    char buf[BUF_SIZE];
    int length;

    while ((length = fread(buf, 1, BUF_SIZE, stdin)) > 0){
       	length = process_sound((void*)buf, (int)length, 0, 44100, 2);
       	if (fwrite(buf, 1, length, stdout) == 0){
	    perror("fwrite");
	    clean_exit(11);
	}
    }
    if (!feof(stdin)) {
       	clean_exit(12);
    }
    clean_exit (0);
}

int main(int argc, char **argv)
{
    pthread_t thread;
    if (argc > 1 && strcmp(argv[1], "-g") == 0) run_gui = 0;
    if (argc > 1 && strcmp(argv[1], "-h") == 0) {
	fprintf(stderr, "Crystality plugin v0.92, stdin/out\n");
       	fprintf(stderr, "Bandwidth Extender, Harmonic Booster and 3D Echo.\n");
       	fprintf(stderr, "By Rafal Bosak <gyver@fanthom.irc.pl> 2001.\n\n");
	fprintf(stderr, "usage: %s [ -b | -h ]\n", argv[0]);
	fprintf(stderr, "    -h this help\n");
	fprintf(stderr, "    -g run without GUI\n\n");
	fprintf(stderr, "config file: ~/.crystalityrc is written automatically on exit\n");
	exit(0);
    }
    if (run_gui) gtk_init (&argc, &argv);
    init();
    if (run_gui) configure();
    thread= (pthread_t)malloc(sizeof(pthread_t));
    pthread_create(&thread, 0, (void*(*)(void*))process_sound_stdio, 0);
    signal(SIGINT, clean_exit);
    signal(SIGTERM, clean_exit);
    if (run_gui) gtk_main();
    else {
	for (;;) sleep(3600);
    }
    return 0;
}