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comparison src/audio/alsa/SDL_alsa_audio.c @ 1161:05d4b93b911e

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Placate gcc's strict aliasing rules with an extra cast. Casts to (char *) will disable strict aliasing when the compiler sees it.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 20 Oct 2005 06:53:56 +0000
parents 41a59de7f2ed
children 1cbaeee565b1
comparison
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1160:72c6c3e5bb85 1161:05d4b93b911e
91 static unsigned int (*SDL_NAME(snd_pcm_hw_params_set_periods_near))(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir); 91 static unsigned int (*SDL_NAME(snd_pcm_hw_params_set_periods_near))(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir);
92 static int (*SDL_NAME(snd_pcm_hw_params))(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 92 static int (*SDL_NAME(snd_pcm_hw_params))(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
93 static int (*SDL_NAME(snd_pcm_nonblock))(snd_pcm_t *pcm, int nonblock); 93 static int (*SDL_NAME(snd_pcm_nonblock))(snd_pcm_t *pcm, int nonblock);
94 #define snd_pcm_hw_params_sizeof SDL_NAME(snd_pcm_hw_params_sizeof) 94 #define snd_pcm_hw_params_sizeof SDL_NAME(snd_pcm_hw_params_sizeof)
95 95
96 /* cast funcs to char* first, to please GCC's strict aliasing rules. */
96 static struct { 97 static struct {
97 const char *name; 98 const char *name;
98 void **func; 99 void **func;
99 } alsa_functions[] = { 100 } alsa_functions[] = {
100 { "snd_pcm_open", (void**)&SDL_NAME(snd_pcm_open) }, 101 { "snd_pcm_open", (void**)(char*)&SDL_NAME(snd_pcm_open) },
101 { "snd_pcm_close", (void**)&SDL_NAME(snd_pcm_close) }, 102 { "snd_pcm_close", (void**)(char*)&SDL_NAME(snd_pcm_close) },
102 { "snd_pcm_writei", (void**)&SDL_NAME(snd_pcm_writei) }, 103 { "snd_pcm_writei", (void**)(char*)&SDL_NAME(snd_pcm_writei) },
103 { "snd_pcm_resume", (void**)&SDL_NAME(snd_pcm_resume) }, 104 { "snd_pcm_resume", (void**)(char*)&SDL_NAME(snd_pcm_resume) },
104 { "snd_pcm_prepare", (void**)&SDL_NAME(snd_pcm_prepare) }, 105 { "snd_pcm_prepare", (void**)(char*)&SDL_NAME(snd_pcm_prepare) },
105 { "snd_pcm_drain", (void**)&SDL_NAME(snd_pcm_drain) }, 106 { "snd_pcm_drain", (void**)(char*)&SDL_NAME(snd_pcm_drain) },
106 { "snd_strerror", (void**)&SDL_NAME(snd_strerror) }, 107 { "snd_strerror", (void**)(char*)&SDL_NAME(snd_strerror) },
107 { "snd_pcm_hw_params_sizeof", (void**)&SDL_NAME(snd_pcm_hw_params_sizeof) }, 108 { "snd_pcm_hw_params_sizeof", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_sizeof) },
108 { "snd_pcm_hw_params_any", (void**)&SDL_NAME(snd_pcm_hw_params_any) }, 109 { "snd_pcm_hw_params_any", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_any) },
109 { "snd_pcm_hw_params_set_access", (void**)&SDL_NAME(snd_pcm_hw_params_set_access) }, 110 { "snd_pcm_hw_params_set_access", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_access) },
110 { "snd_pcm_hw_params_set_format", (void**)&SDL_NAME(snd_pcm_hw_params_set_format) }, 111 { "snd_pcm_hw_params_set_format", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_format) },
111 { "snd_pcm_hw_params_set_channels", (void**)&SDL_NAME(snd_pcm_hw_params_set_channels) }, 112 { "snd_pcm_hw_params_set_channels", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_channels) },
112 { "snd_pcm_hw_params_get_channels", (void**)&SDL_NAME(snd_pcm_hw_params_get_channels) }, 113 { "snd_pcm_hw_params_get_channels", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_get_channels) },
113 { "snd_pcm_hw_params_set_rate_near", (void**)&SDL_NAME(snd_pcm_hw_params_set_rate_near) }, 114 { "snd_pcm_hw_params_set_rate_near", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_rate_near) },
114 { "snd_pcm_hw_params_set_period_size_near", (void**)&SDL_NAME(snd_pcm_hw_params_set_period_size_near) }, 115 { "snd_pcm_hw_params_set_period_size_near", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_period_size_near) },
115 { "snd_pcm_hw_params_set_periods_near", (void**)&SDL_NAME(snd_pcm_hw_params_set_periods_near) }, 116 { "snd_pcm_hw_params_set_periods_near", (void**)(char*)&SDL_NAME(snd_pcm_hw_params_set_periods_near) },
116 { "snd_pcm_hw_params", (void**)&SDL_NAME(snd_pcm_hw_params) }, 117 { "snd_pcm_hw_params", (void**)(char*)&SDL_NAME(snd_pcm_hw_params) },
117 { "snd_pcm_nonblock", (void**)&SDL_NAME(snd_pcm_nonblock) }, 118 { "snd_pcm_nonblock", (void**)(char*)&SDL_NAME(snd_pcm_nonblock) },
118 }; 119 };
119 120
120 static void UnloadALSALibrary(void) { 121 static void UnloadALSALibrary(void) {
121 if (alsa_loaded) { 122 if (alsa_loaded) {
122 /* SDL_UnloadObject(alsa_handle);*/ 123 /* SDL_UnloadObject(alsa_handle);*/