/
playmus.c
209 lines (182 loc) · 4.62 KB
/
playmus.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/*
PLAYMUS: A test application for the SDL mixer library.
Copyright (C) 1997-2004 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@libsdl.org
*/
/* $Id$ */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#ifdef unix
#include <unistd.h>
#endif
#include "SDL.h"
#include "SDL_mixer.h"
static int audio_open = 0;
static Mix_Music *music = NULL;
static int next_track = 0;
void CleanUp(void)
{
if( Mix_PlayingMusic() ) {
Mix_FadeOutMusic(1500);
SDL_Delay(1500);
}
if ( music ) {
Mix_FreeMusic(music);
music = NULL;
}
if ( audio_open ) {
Mix_CloseAudio();
audio_open = 0;
}
SDL_Quit();
}
void Usage(char *argv0)
{
fprintf(stderr, "Usage: %s [-i] [-l] [-8] [-r rate] [-c channels] [-b buffers] [-v N] <musicfile>\n", argv0);
}
void Menu(void)
{
char buf[10];
printf("Available commands: (p)ause (r)esume (h)alt > ");
fflush(stdin);
scanf("%s",buf);
switch(buf[0]){
case 'p': case 'P':
Mix_PauseMusic();
break;
case 'r': case 'R':
Mix_ResumeMusic();
break;
case 'h': case 'H':
Mix_HaltMusic();
break;
}
printf("Music playing: %s Paused: %s\n", Mix_PlayingMusic() ? "yes" : "no",
Mix_PausedMusic() ? "yes" : "no");
}
void IntHandler(int sig)
{
switch (sig) {
case SIGINT:
next_track++;
break;
}
}
int main(int argc, char *argv[])
{
int audio_rate;
Uint16 audio_format;
int audio_channels;
int audio_buffers;
int audio_volume = MIX_MAX_VOLUME;
int looping = 0;
int interactive = 0;
int i;
/* Initialize variables */
audio_rate = 22050;
audio_format = AUDIO_S16;
audio_channels = 2;
audio_buffers = 4096;
/* Check command line usage */
for ( i=1; argv[i] && (*argv[i] == '-'); ++i ) {
if ( (strcmp(argv[i], "-r") == 0) && argv[i+1] ) {
++i;
audio_rate = atoi(argv[i]);
} else
if ( strcmp(argv[i], "-m") == 0 ) {
audio_channels = 1;
} else
if ( (strcmp(argv[i], "-c") == 0) && argv[i+1] ) {
++i;
audio_channels = atoi(argv[i]);
} else
if ( (strcmp(argv[i], "-b") == 0) && argv[i+1] ) {
++i;
audio_buffers = atoi(argv[i]);
} else
if ( (strcmp(argv[i], "-v") == 0) && argv[i+1] ) {
++i;
audio_volume = atoi(argv[i]);
} else
if ( strcmp(argv[i], "-l") == 0 ) {
looping = -1;
} else
if ( strcmp(argv[i], "-i") == 0 ) {
interactive = 1;
} else
if ( strcmp(argv[i], "-8") == 0 ) {
audio_format = AUDIO_U8;
} else {
Usage(argv[0]);
return(1);
}
}
if ( ! argv[i] ) {
Usage(argv[0]);
return(1);
}
/* Initialize the SDL library */
if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {
fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
return(255);
}
atexit(CleanUp);
signal(SIGINT, IntHandler);
signal(SIGTERM, exit);
/* Open the audio device */
if (Mix_OpenAudio(audio_rate, audio_format, audio_channels, audio_buffers) < 0) {
fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
return(2);
} else {
Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
printf("Opened audio at %d Hz %d bit %s, %d bytes audio buffer\n", audio_rate,
(audio_format&0xFF),
(audio_channels > 2) ? "surround" : (audio_channels > 1) ? "stereo" : "mono",
audio_buffers );
}
audio_open = 1;
/* Set the music volume */
Mix_VolumeMusic(audio_volume);
/* Set the external music player, if any */
Mix_SetMusicCMD(getenv("MUSIC_CMD"));
while (argv[i]) {
next_track = 0;
/* Load the requested music file */
music = Mix_LoadMUS(argv[i]);
if ( music == NULL ) {
fprintf(stderr, "Couldn't load %s: %s\n",
argv[i], SDL_GetError());
return(2);
}
/* Play and then exit */
printf("Playing %s\n", argv[i]);
Mix_FadeInMusic(music,looping,2000);
while ( !next_track && (Mix_PlayingMusic() || Mix_PausedMusic()) ) {
if(interactive)
Menu();
else
SDL_Delay(100);
}
Mix_FreeMusic(music);
music = NULL;
/* If the user presses Ctrl-C more than once, exit. */
SDL_Delay(500);
if ( next_track > 1 ) break;
i++;
}
return(0);
}