filter/Plugin: rename with CamelCase

src/filter/FilterPlugin.cxx

@@ -27,7 +27,7 @@
 #include <assert.h>
 
 PreparedFilter *
-filter_new(const struct filter_plugin *plugin, const ConfigBlock &block)
+filter_new(const FilterPlugin *plugin, const ConfigBlock &block)
 {
 	assert(plugin != nullptr);
 
@@ -41,7 +41,7 @@ filter_configured_new(const ConfigBlock &block)
 	if (plugin_name == nullptr)
 		throw std::runtime_error("No filter plugin specified");
 
-	const filter_plugin *plugin = filter_plugin_by_name(plugin_name);
+	const auto *plugin = filter_plugin_by_name(plugin_name);
 	if (plugin == nullptr)
 		throw FormatRuntimeError("No such filter plugin: %s",
 					 plugin_name);

src/filter/FilterPlugin.hxx

@@ -29,7 +29,7 @@
 struct ConfigBlock;
 class PreparedFilter;
 
-struct filter_plugin {
+struct FilterPlugin {
 	const char *name;
 
 	/**
@@ -47,7 +47,7 @@ struct filter_plugin {
  * @param block configuration section
  */
 PreparedFilter *
-filter_new(const struct filter_plugin *plugin,
+filter_new(const FilterPlugin *plugin,
 	   const ConfigBlock &block);
 
 /**

src/filter/FilterRegistry.cxx

@@ -23,7 +23,7 @@
 
 #include <string.h>
 
-const struct filter_plugin *const filter_plugins[] = {
+const FilterPlugin *const filter_plugins[] = {
 	&null_filter_plugin,
 	&route_filter_plugin,
 	&normalize_filter_plugin,
@@ -32,7 +32,7 @@ const struct filter_plugin *const filter_plugins[] = {
 	nullptr,
 };
 
-const struct filter_plugin *
+const FilterPlugin *
 filter_plugin_by_name(const char *name)
 {
 	for (unsigned i = 0; filter_plugins[i] != nullptr; ++i)

src/filter/FilterRegistry.hxx

@@ -28,16 +28,18 @@
 
 #include "Compiler.h"
 
-extern const struct filter_plugin null_filter_plugin;
-extern const struct filter_plugin chain_filter_plugin;
-extern const struct filter_plugin convert_filter_plugin;
-extern const struct filter_plugin route_filter_plugin;
-extern const struct filter_plugin normalize_filter_plugin;
-extern const struct filter_plugin volume_filter_plugin;
-extern const struct filter_plugin replay_gain_filter_plugin;
+struct FilterPlugin;
+
+extern const FilterPlugin null_filter_plugin;
+extern const FilterPlugin chain_filter_plugin;
+extern const FilterPlugin convert_filter_plugin;
+extern const FilterPlugin route_filter_plugin;
+extern const FilterPlugin normalize_filter_plugin;
+extern const FilterPlugin volume_filter_plugin;
+extern const FilterPlugin replay_gain_filter_plugin;
 
 gcc_pure
-const struct filter_plugin *
+const FilterPlugin *
 filter_plugin_by_name(const char *name);
 
 #endif

src/filter/plugins/ChainFilterPlugin.cxx

@@ -143,7 +143,7 @@ ChainFilter::FilterPCM(ConstBuffer<void> src)
 	return src;
 }
 
-const struct filter_plugin chain_filter_plugin = {
+const FilterPlugin chain_filter_plugin = {
 	"chain",
 	chain_filter_init,
 };

src/filter/plugins/ConvertFilterPlugin.cxx

@@ -125,7 +125,7 @@ ConvertFilter::FilterPCM(ConstBuffer<void> src)
 	return state.Convert(src);
 }
 
-const struct filter_plugin convert_filter_plugin = {
+const FilterPlugin convert_filter_plugin = {
 	"convert",
 	convert_filter_init,
 };

src/filter/plugins/NormalizeFilterPlugin.cxx

@@ -76,7 +76,7 @@ NormalizeFilter::FilterPCM(ConstBuffer<void> src)
 	return { (const void *)dest, src.size };
 }
 
-const struct filter_plugin normalize_filter_plugin = {
+const FilterPlugin normalize_filter_plugin = {
 	"normalize",
 	normalize_filter_init,
 };

src/filter/plugins/NullFilterPlugin.cxx

@@ -54,7 +54,7 @@ null_filter_init(gcc_unused const ConfigBlock &block)
 	return new PreparedNullFilter();
 }
 
-const struct filter_plugin null_filter_plugin = {
+const FilterPlugin null_filter_plugin = {
 	"null",
 	null_filter_init,
 };

src/filter/plugins/ReplayGainFilterPlugin.cxx

@@ -186,7 +186,7 @@ ReplayGainFilter::FilterPCM(ConstBuffer<void> src)
 		: pv.Apply(src);
 }
 
-const struct filter_plugin replay_gain_filter_plugin = {
+const FilterPlugin replay_gain_filter_plugin = {
 	"replay_gain",
 	replay_gain_filter_init,
 };

src/filter/plugins/RouteFilterPlugin.cxx

@@ -272,7 +272,7 @@ RouteFilter::FilterPCM(ConstBuffer<void> src)
 	return { result, result_size };
 }
 
-const struct filter_plugin route_filter_plugin = {
+const FilterPlugin route_filter_plugin = {
 	"route",
 	route_filter_init,
 };

src/filter/plugins/VolumeFilterPlugin.cxx

@@ -75,7 +75,7 @@ VolumeFilter::FilterPCM(ConstBuffer<void> src)
 	return pv.Apply(src);
 }
 
-const struct filter_plugin volume_filter_plugin = {
+const FilterPlugin volume_filter_plugin = {
 	"volume",
 	volume_filter_init,
 };

test/read_mixer.cxx

@@ -32,7 +32,7 @@
 #include <unistd.h>
 #include <stdlib.h>
 
-const struct filter_plugin *
+const FilterPlugin *
 filter_plugin_by_name(gcc_unused const char *name)
 {
 	assert(false);

test/run_output.cxx

@@ -42,7 +42,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-const struct filter_plugin *
+const FilterPlugin *
 filter_plugin_by_name(gcc_unused const char *name)
 {
 	assert(false);