3 * Copyright (c) 2006 acmesystems.it - john@acmesystems.it
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
19 * Feedback, Bugs... info@acmesystems.it
26 #include <sys/ioctl.h>
32 static int mp3_frequency_val = CRYSTAL12288;
33 unsigned int volume = 0x3030;
35 int mp3_open_port(unsigned char *port_name){
37 if ((fd = open(port_name, O_RDWR)) < 0) {
38 printf("Error whilst opening %s\n", port_name);
44 void mp3_set_frequency(unsigned int crystal_frequency){
45 mp3_frequency_val = crystal_frequency;
49 mp3_fd = mp3_open_port("/dev/mp3");
53 ioctl(mp3_fd, IOCTL_MP3_INIT, mp3_frequency_val);
57 void mp3_shutdown(void){
61 void mp3_bass(unsigned char t_freq, unsigned char t_amp,
62 unsigned char b_freq, unsigned char b_amp){
77 ioctl(mp3_fd, IOCTL_MP3_BASS, val);
81 ioctl(mp3_fd, IOCTL_MP3_CLEARBUFFER, 0);
82 ioctl(mp3_fd, IOCTL_MP3_RESET, mp3_frequency_val);
83 ioctl(mp3_fd, IOCTL_MP3_SETVOLUME, volume);
86 unsigned char mp3_send_data_to_buffer(MP3_DATA mp3_data){
87 return write(mp3_fd, (void*)&mp3_data, sizeof(MP3_DATA));
90 unsigned char mp3_play(void){
91 return ioctl(mp3_fd, IOCTL_MP3_PLAY, 0);
95 ioctl(mp3_fd, IOCTL_MP3_CLEARBUFFER, 0);
98 void mp3_beep(unsigned char freq, unsigned int ms){
100 mp3_beep_.freq = freq;
102 ioctl(mp3_fd, IOCTL_MP3_BEEP, &mp3_beep_);
105 void mp3_set_volume(unsigned char left, unsigned char right){
110 ioctl(mp3_fd, IOCTL_MP3_SETVOLUME, volume);
113 unsigned char mp3_buffer_finished(void){
114 return ioctl(mp3_fd, IOCTL_MP3_END_REACHED, 0);
117 unsigned char mp3_get_audio_data(AUDIO_DATA *audio_data){
118 return ioctl(mp3_fd, IOCTL_MP3_GETAUDIODATA, audio_data);