shout: constant plugin declarations

src/audioOutputs/audioOutput_shout.c

@@ -29,13 +29,13 @@
 
 static int shout_init_count;
 
-static struct shout_encoder_plugin *const shout_encoder_plugins[] = {
+static const struct shout_encoder_plugin *const shout_encoder_plugins[] = {
 	&shout_mp3_encoder,
 	&shout_ogg_encoder,
 	NULL
 };
 
-static struct shout_encoder_plugin *
+static const struct shout_encoder_plugin *
 shout_encoder_plugin_get(const char *name)
 {
 	unsigned i;

src/audioOutputs/audioOutput_shout.h

@@ -64,7 +64,7 @@ struct shout_data {
 	shout_metadata_t *shout_meta;
 	int shout_error;
 
-	struct shout_encoder_plugin *encoder;
+	const struct shout_encoder_plugin *encoder;
 	void *encoder_data;
 
 	float quality;
@@ -87,8 +87,8 @@ struct shout_data {
 	struct shout_buffer buf;
 };
 
-extern struct shout_encoder_plugin shout_mp3_encoder;
-extern struct shout_encoder_plugin shout_ogg_encoder;
+extern const struct shout_encoder_plugin shout_mp3_encoder;
+extern const struct shout_encoder_plugin shout_ogg_encoder;
 
 #endif
 

src/audioOutputs/audioOutput_shout_mp3.c

@@ -174,7 +174,7 @@ static int shout_mp3_encoder_encode(struct shout_data *sd,
 	return 0;
 }
 
-struct shout_encoder_plugin shout_mp3_encoder = {
+const struct shout_encoder_plugin shout_mp3_encoder = {
 	"mp3",
 	SHOUT_FORMAT_MP3,
 

src/audioOutputs/audioOutput_shout_ogg.c

@@ -289,7 +289,7 @@ static int shout_ogg_encoder_encode(struct shout_data *sd,
 	return 0;
 }
 
-struct shout_encoder_plugin shout_ogg_encoder = {
+const struct shout_encoder_plugin shout_ogg_encoder = {
 	"ogg",
 	SHOUT_FORMAT_VORBIS,