test/{read_conf,run_filter}: convert to C++

Makefile.am

@@ -1045,7 +1045,7 @@ endif
 
 test_read_conf_LDADD = \
 	$(GLIB_LIBS)
-test_read_conf_SOURCES = test/read_conf.c \
+test_read_conf_SOURCES = test/read_conf.cxx \
 	src/ConfigFile.cxx src/tokenizer.c src/utils.c src/string_util.c
 
 test_run_resolver_LDADD = \
@@ -1183,7 +1183,7 @@ endif
 test_run_filter_LDADD = \
 	$(FILTER_LIBS) \
 	$(GLIB_LIBS)
-test_run_filter_SOURCES = test/run_filter.c \
+test_run_filter_SOURCES = test/run_filter.cxx \
 	test/FakeReplayGainConfig.cxx \
 	test/stdbin.h \
 	src/filter_plugin.c \

src/filter/ReplayGainFilterPlugin.cxx

@@ -25,11 +25,11 @@
 #include "audio_format.h"
 #include "replay_gain_info.h"
 #include "replay_gain_config.h"
+#include "mixer_control.h"
 
 extern "C" {
 #include "pcm_buffer.h"
 #include "pcm_volume.h"
-#include "mixer_control.h"
 }
 
 #include <assert.h>

src/filter_plugin.h

@@ -74,6 +74,10 @@ struct filter_plugin {
 			      GError **error_r);
 };
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * Creates a new instance of the specified filter plugin.
  *
@@ -147,4 +151,8 @@ filter_filter(struct filter *filter, const void *src, size_t src_size,
 	      size_t *dest_size_r,
 	      GError **error_r);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

src/mixer_control.h

@@ -33,6 +33,10 @@ struct mixer;
 struct mixer_plugin;
 struct config_param;
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct mixer *
 mixer_new(const struct mixer_plugin *plugin, void *ao,
 	  const struct config_param *param,
@@ -60,4 +64,8 @@ mixer_get_volume(struct mixer *mixer, GError **error_r);
 bool
 mixer_set_volume(struct mixer *mixer, unsigned volume, GError **error_r);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif

test/read_conf.cxx

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify

test/run_filter.cxx

@@ -19,7 +19,11 @@
 
 #include "config.h"
 #include "conf.h"
+
+extern "C" {
 #include "audio_parser.h"
+}
+
 #include "audio_format.h"
 #include "filter_plugin.h"
 #include "pcm_volume.h"
@@ -75,7 +79,7 @@ load_filter(const char *name)
 	param = find_named_config_block("filter", name);
 	if (param == NULL) {
 		g_printerr("No such configured filter: %s\n", name);
-		return false;
+		return nullptr;
 	}
 
 	filter = filter_configured_new(param, &error);