slouken@0
|
1 |
|
slouken@0
|
2 |
/* Program to load a wave file and loop playing it using SDL sound */
|
slouken@0
|
3 |
|
slouken@0
|
4 |
/* loopwaves.c is much more robust in handling WAVE files --
|
slouken@0
|
5 |
This is only for simple WAVEs
|
slouken@0
|
6 |
*/
|
slouken@1463
|
7 |
#include "SDL_config.h"
|
slouken@0
|
8 |
|
slouken@0
|
9 |
#include <stdio.h>
|
slouken@0
|
10 |
#include <stdlib.h>
|
slouken@1463
|
11 |
|
slouken@1463
|
12 |
#if HAVE_SIGNAL_H
|
slouken@0
|
13 |
#include <signal.h>
|
slouken@1463
|
14 |
#endif
|
slouken@0
|
15 |
|
slouken@0
|
16 |
#include "SDL.h"
|
slouken@0
|
17 |
#include "SDL_audio.h"
|
slouken@0
|
18 |
|
slouken@1895
|
19 |
struct
|
slouken@1895
|
20 |
{
|
slouken@1895
|
21 |
SDL_AudioSpec spec;
|
slouken@1895
|
22 |
Uint8 *sound; /* Pointer to wave data */
|
slouken@1895
|
23 |
Uint32 soundlen; /* Length of wave data */
|
slouken@1895
|
24 |
int soundpos; /* Current play position */
|
slouken@0
|
25 |
} wave;
|
slouken@0
|
26 |
|
icculus@1151
|
27 |
|
icculus@1151
|
28 |
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
|
slouken@1895
|
29 |
static void
|
slouken@1895
|
30 |
quit(int rc)
|
icculus@1151
|
31 |
{
|
slouken@1895
|
32 |
SDL_Quit();
|
slouken@1895
|
33 |
exit(rc);
|
icculus@1151
|
34 |
}
|
icculus@1151
|
35 |
|
icculus@1151
|
36 |
|
slouken@1895
|
37 |
void SDLCALL
|
slouken@1895
|
38 |
fillerup(void *unused, Uint8 * stream, int len)
|
slouken@0
|
39 |
{
|
slouken@1895
|
40 |
Uint8 *waveptr;
|
slouken@1895
|
41 |
int waveleft;
|
slouken@0
|
42 |
|
slouken@1895
|
43 |
/* Set up the pointers */
|
slouken@1895
|
44 |
waveptr = wave.sound + wave.soundpos;
|
slouken@1895
|
45 |
waveleft = wave.soundlen - wave.soundpos;
|
slouken@0
|
46 |
|
slouken@1895
|
47 |
/* Go! */
|
slouken@1895
|
48 |
while (waveleft <= len) {
|
icculus@2145
|
49 |
SDL_memcpy(stream, waveptr, waveleft);
|
slouken@1895
|
50 |
stream += waveleft;
|
slouken@1895
|
51 |
len -= waveleft;
|
slouken@1895
|
52 |
waveptr = wave.sound;
|
slouken@1895
|
53 |
waveleft = wave.soundlen;
|
slouken@1895
|
54 |
wave.soundpos = 0;
|
slouken@1895
|
55 |
}
|
icculus@2145
|
56 |
SDL_memcpy(stream, waveptr, len);
|
slouken@1895
|
57 |
wave.soundpos += len;
|
slouken@0
|
58 |
}
|
slouken@0
|
59 |
|
slouken@0
|
60 |
static int done = 0;
|
slouken@1895
|
61 |
void
|
slouken@1895
|
62 |
poked(int sig)
|
slouken@0
|
63 |
{
|
slouken@1895
|
64 |
done = 1;
|
slouken@0
|
65 |
}
|
slouken@0
|
66 |
|
slouken@1895
|
67 |
int
|
slouken@1895
|
68 |
main(int argc, char *argv[])
|
slouken@0
|
69 |
{
|
slouken@1895
|
70 |
/* Load the SDL library */
|
slouken@1895
|
71 |
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
|
slouken@1895
|
72 |
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
|
slouken@1895
|
73 |
return (1);
|
slouken@1895
|
74 |
}
|
icculus@2049
|
75 |
|
slouken@1895
|
76 |
if (argv[1] == NULL) {
|
slouken@1895
|
77 |
argv[1] = "sample.wav";
|
slouken@1895
|
78 |
}
|
slouken@1895
|
79 |
/* Load the wave file into memory */
|
slouken@1895
|
80 |
if (SDL_LoadWAV(argv[1], &wave.spec, &wave.sound, &wave.soundlen) == NULL) {
|
slouken@1895
|
81 |
fprintf(stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError());
|
slouken@1895
|
82 |
quit(1);
|
slouken@1895
|
83 |
}
|
slouken@1463
|
84 |
|
slouken@1895
|
85 |
wave.spec.callback = fillerup;
|
slouken@1463
|
86 |
#if HAVE_SIGNAL_H
|
slouken@1895
|
87 |
/* Set the signals */
|
slouken@0
|
88 |
#ifdef SIGHUP
|
slouken@1895
|
89 |
signal(SIGHUP, poked);
|
slouken@0
|
90 |
#endif
|
slouken@1895
|
91 |
signal(SIGINT, poked);
|
slouken@0
|
92 |
#ifdef SIGQUIT
|
slouken@1895
|
93 |
signal(SIGQUIT, poked);
|
slouken@0
|
94 |
#endif
|
slouken@1895
|
95 |
signal(SIGTERM, poked);
|
slouken@1463
|
96 |
#endif /* HAVE_SIGNAL_H */
|
slouken@0
|
97 |
|
slouken@1895
|
98 |
/* Initialize fillerup() variables */
|
slouken@1895
|
99 |
if (SDL_OpenAudio(&wave.spec, NULL) < 0) {
|
slouken@1895
|
100 |
fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
|
slouken@1895
|
101 |
SDL_FreeWAV(wave.sound);
|
slouken@1895
|
102 |
quit(2);
|
slouken@1895
|
103 |
}
|
icculus@3359
|
104 |
|
icculus@3359
|
105 |
/* Right now we're using the 1.2 SDL_OpenAudio(), but if we move to the
|
icculus@3359
|
106 |
1.3 device enumeration version, we shouldn't hardcore device id #1 for
|
icculus@3359
|
107 |
SDL_GetAudioDeviceName(), below. */
|
icculus@3360
|
108 |
printf("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
|
icculus@3359
|
109 |
printf("Using audio device: %s\n", SDL_GetAudioDeviceName(1, 0));
|
slouken@0
|
110 |
|
slouken@1895
|
111 |
/* Let the audio run */
|
icculus@3359
|
112 |
SDL_PauseAudio(0);
|
slouken@1895
|
113 |
while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING))
|
slouken@1895
|
114 |
SDL_Delay(1000);
|
slouken@0
|
115 |
|
slouken@1895
|
116 |
/* Clean up on signal */
|
slouken@1895
|
117 |
SDL_CloseAudio();
|
slouken@1895
|
118 |
SDL_FreeWAV(wave.sound);
|
slouken@1895
|
119 |
SDL_Quit();
|
slouken@1895
|
120 |
return (0);
|
slouken@0
|
121 |
}
|