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mixer: make all mixer_plugin pointers const

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The plugin structures must never be modified.
This commit is contained in:
Max Kellermann 2009-01-25 17:37:52 +01:00
parent 899eb5383d
commit ad8561bfdc
4 changed files with 7 additions and 7 deletions
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2
src/mixer/alsa_mixer.c
View File

@ -237,7 +237,7 @@ alsa_mixer_control(struct mixer_data *data, int cmd, void *arg)
return false;
}
struct mixer_plugin alsa_mixer = {
const struct mixer_plugin alsa_mixer = {
.init = alsa_mixer_init,
.finish = alsa_mixer_finish,
.configure = alsa_mixer_configure,

2
src/mixer/oss_mixer.c
View File

@ -218,7 +218,7 @@ oss_mixer_control(struct mixer_data *data, int cmd, void *arg)
return false;
}
struct mixer_plugin oss_mixer = {
const struct mixer_plugin oss_mixer = {
.init = oss_mixer_init,
.finish = oss_mixer_finish,
.configure = oss_mixer_configure,

2
src/mixer_api.c
View File

@ -21,7 +21,7 @@
#include "mixer_api.h"
void mixer_init(struct mixer *mixer, struct mixer_plugin *plugin)
void mixer_init(struct mixer *mixer, const struct mixer_plugin *plugin)
{
assert(plugin != NULL);
assert(mixer != NULL);

8
src/mixer_api.h
View File

@ -25,8 +25,8 @@
* list of currently implemented mixers
*/
extern struct mixer_plugin alsa_mixer;
extern struct mixer_plugin oss_mixer;
extern const struct mixer_plugin alsa_mixer;
extern const struct mixer_plugin oss_mixer;
struct mixer_data;
@ -65,11 +65,11 @@ struct mixer_plugin {
};
struct mixer {
struct mixer_plugin *plugin;
const struct mixer_plugin *plugin;
struct mixer_data *data;
};
void mixer_init(struct mixer *mixer, struct mixer_plugin *plugin);
void mixer_init(struct mixer *mixer, const struct mixer_plugin *plugin);
void mixer_finish(struct mixer *mixer);
void mixer_configure(struct mixer *mixer, const struct config_param *param);
bool mixer_open(struct mixer *mixer);