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-rw-r--r--src/mixer/alsa_mixer.c2
-rw-r--r--src/mixer/oss_mixer.c2
-rw-r--r--src/mixer_api.c2
-rw-r--r--src/mixer_api.h8
4 files changed, 7 insertions, 7 deletions
diff --git a/src/mixer/alsa_mixer.c b/src/mixer/alsa_mixer.c
index aafc8f5d9..36ae76cc9 100644
--- a/src/mixer/alsa_mixer.c
+++ b/src/mixer/alsa_mixer.c
@@ -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,
diff --git a/src/mixer/oss_mixer.c b/src/mixer/oss_mixer.c
index ad25099ab..5185a867d 100644
--- a/src/mixer/oss_mixer.c
+++ b/src/mixer/oss_mixer.c
@@ -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,
diff --git a/src/mixer_api.c b/src/mixer_api.c
index efeac9f81..bd5e1ca05 100644
--- a/src/mixer_api.c
+++ b/src/mixer_api.c
@@ -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);
diff --git a/src/mixer_api.h b/src/mixer_api.h
index 1f1a2b0b1..c209f4b06 100644
--- a/src/mixer_api.h
+++ b/src/mixer_api.h
@@ -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);