mixer_api: moved struct mixer_plugin to mixer_plugin.h

Makefile.am

@@ -82,6 +82,7 @@ mpd_headers = \
 	src/mixer_api.h \
 	src/mixer_control.h \
 	src/event_pipe.h \
+	src/mixer_plugin.h \
 	src/daemon.h \
 	src/normalize.h \
 	src/compress.h \

src/mixer_api.h

@@ -20,7 +20,7 @@
 #ifndef MPD_MIXER_H
 #define MPD_MIXER_H
 
-#include <stdbool.h>
+#include "mixer_plugin.h"
 
 /*
  * list of currently implemented mixers
@@ -30,46 +30,6 @@ extern const struct mixer_plugin alsa_mixer;
 extern const struct mixer_plugin oss_mixer;
 extern const struct mixer_plugin pulse_mixer;
 
-struct config_param;
-
-struct mixer_plugin {
-	/**
-         * Alocates and configures a mixer device.
-	 */
-	struct mixer *(*init)(const struct config_param *param);
-
-        /**
-	 * Finish and free mixer data
-         */
-        void (*finish)(struct mixer *data);
-
-        /**
-    	 * Open mixer device
-	 */
-	bool (*open)(struct mixer *data);
-
-        /**
-    	 * Close mixer device
-	 */
-	void (*close)(struct mixer *data);
-
-	/**
-	 * Reads the current volume.
-	 *
-	 * @return the current volume (0..100 including) or -1 on
-	 * error
-	 */
-	int (*get_volume)(struct mixer *mixer);
-
-	/**
-	 * Sets the volume.
-	 *
-	 * @param volume the new volume (0..100 including)
-	 * @return true on success
-	 */
-	bool (*set_volume)(struct mixer *mixer, unsigned volume);
-};
-
 struct mixer {
 	const struct mixer_plugin *plugin;
 };

src/mixer_plugin.h

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/** \file
+ *
+ * This header declares the mixer_plugin class.  It should not be
+ * included directly; use mixer_api.h instead in mixer
+ * implementations.
+ */
+
+#ifndef MPD_MIXER_PLUGIN_H
+#define MPD_MIXER_PLUGIN_H
+
+#include <stdbool.h>
+
+struct config_param;
+struct mixer;
+
+struct mixer_plugin {
+	/**
+         * Alocates and configures a mixer device.
+	 */
+	struct mixer *(*init)(const struct config_param *param);
+
+	/**
+	 * Finish and free mixer data
+         */
+	void (*finish)(struct mixer *data);
+
+	/**
+	 * Open mixer device
+	 */
+	bool (*open)(struct mixer *data);
+
+	/**
+	 * Close mixer device
+	 */
+	void (*close)(struct mixer *data);
+
+	/**
+	 * Reads the current volume.
+	 *
+	 * @return the current volume (0..100 including) or -1 on
+	 * error
+	 */
+	int (*get_volume)(struct mixer *mixer);
+
+	/**
+	 * Sets the volume.
+	 *
+	 * @param volume the new volume (0..100 including)
+	 * @return true on success
+	 */
+	bool (*set_volume)(struct mixer *mixer, unsigned volume);
+};
+
+#endif