Skip to content

Latest commit

 

History

History
92 lines (80 loc) · 3.1 KB

dynamic_mp3.c

File metadata and controls

92 lines (80 loc) · 3.1 KB
 
Dec 31, 2011
Dec 31, 2011
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
SDL_mixer: An audio mixer library based on the SDL library
Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
20
21
22
23
24
25
26
27
*/
#ifdef MP3_MUSIC
#include "SDL_loadso.h"
#include "dynamic_mp3.h"
Oct 11, 2018
Oct 11, 2018
28
mpg123_loader mpg123 = {
29
30
31
0, NULL
};
Oct 11, 2018
Oct 11, 2018
32
33
34
#ifdef MPG123_DYNAMIC
#define FUNCTION_LOADER(FUNC, SIG) \
mpg123.FUNC = (SIG) SDL_LoadFunction(mpg123.handle, #FUNC); \
Oct 13, 2018
Oct 13, 2018
35
if (mpg123.FUNC == NULL) { goto initerr; }
Oct 11, 2018
Oct 11, 2018
36
37
38
39
40
41
#else
#define FUNCTION_LOADER(FUNC, SIG) \
mpg123.FUNC = FUNC;
#endif
int Mix_InitMP3(void)
Oct 11, 2018
Oct 11, 2018
43
44
45
46
if (mpg123.loaded == 0) {
#ifdef MPG123_DYNAMIC
mpg123.handle = SDL_LoadObject(MPG123_DYNAMIC);
if (mpg123.handle == NULL) {
47
48
return -1;
}
Oct 11, 2018
Oct 11, 2018
49
50
51
52
53
54
55
56
57
58
59
#endif
FUNCTION_LOADER(mpg123_close, int (*)(mpg123_handle *mh))
FUNCTION_LOADER(mpg123_delete, void (*)(mpg123_handle *mh))
FUNCTION_LOADER(mpg123_exit, void (*)(void))
FUNCTION_LOADER(mpg123_format, int (*)( mpg123_handle *mh, long rate, int channels, int encodings ))
FUNCTION_LOADER(mpg123_format_none, int (*)(mpg123_handle *mh))
FUNCTION_LOADER(mpg123_getformat, int (*)( mpg123_handle *mh, long *rate, int *channels, int *encoding ))
FUNCTION_LOADER(mpg123_init, int (*)(void))
FUNCTION_LOADER(mpg123_new, mpg123_handle *(*)(const char* decoder, int *error))
FUNCTION_LOADER(mpg123_open_handle, int (*)(mpg123_handle *mh, void *iohandle))
FUNCTION_LOADER(mpg123_plain_strerror, const char* (*)(int errcode))
Dec 14, 2019
Dec 14, 2019
60
FUNCTION_LOADER(mpg123_rates, void (*)(const long **list, size_t *number))
Oct 11, 2018
Oct 11, 2018
61
62
63
64
65
FUNCTION_LOADER(mpg123_read, int (*)(mpg123_handle *mh, unsigned char *outmemory, size_t outmemsize, size_t *done ))
FUNCTION_LOADER(mpg123_replace_reader_handle, int (*)( mpg123_handle *mh, ssize_t (*r_read) (void *, void *, size_t), off_t (*r_lseek)(void *, off_t, int), void (*cleanup)(void*) ))
FUNCTION_LOADER(mpg123_seek, off_t (*)( mpg123_handle *mh, off_t sampleoff, int whence ))
FUNCTION_LOADER(mpg123_strerror, const char* (*)(mpg123_handle *mh))
if (mpg123.mpg123_init() != MPG123_OK) {
Oct 13, 2018
Oct 13, 2018
66
67
68
69
#ifdef MPG123_DYNAMIC
initerr:
SDL_UnloadObject(mpg123.handle);
#endif
70
71
72
return -1;
}
}
Oct 11, 2018
Oct 11, 2018
73
++mpg123.loaded;
74
75
76
77
return 0;
}
Oct 11, 2018
Oct 11, 2018
78
void Mix_QuitMP3(void)
Oct 11, 2018
Oct 11, 2018
80
if (mpg123.loaded == 0) {
81
82
return;
}
Oct 11, 2018
Oct 11, 2018
83
84
85
86
87
if (mpg123.loaded == 1) {
mpg123.mpg123_exit();
#ifdef MPG123_DYNAMIC
SDL_UnloadObject(mpg123.handle);
#endif
Oct 11, 2018
Oct 11, 2018
89
--mpg123.loaded;
90
91
92
}
#endif /* MP3_MUSIC */