output: rename struct audio_output to AudioOutput

35 files changed, 274 insertions, 273 deletions

diff --git a/src/PlayerControl.hxx b/src/PlayerControl.hxx
index a7237167c..4eeccdb6c 100644
--- a/src/PlayerControl.hxx
+++ b/src/PlayerControl.hxx
@@ -47,7 +47,7 @@ enum class PlayerCommand : uint8_t {
 	CLOSE_AUDIO,
 
 	/**
-	 * At least one audio_output.enabled flag has been modified;
+	 * At least one AudioOutput.enabled flag has been modified;
 	 * commit those changes to the output threads.
 	 */
 	UPDATE_AUDIO,
diff --git a/src/config/ConfigTemplates.cxx b/src/config/ConfigTemplates.cxx
index 8eaa22bdd..640a93aa2 100644
--- a/src/config/ConfigTemplates.cxx
+++ b/src/config/ConfigTemplates.cxx
@@ -42,7 +42,7 @@ const ConfigTemplate config_templates[] = {
 	{ "zeroconf_enabled", false, false },
 	{ "password", true, false },
 	{ "default_permissions", false, false },
-	{ "audio_output", true, true },
+	{ "AudioOutput", true, true },
 	{ "audio_output_format", false, false },
 	{ "mixer_type", false, false },
 	{ "replaygain", false, false },
diff --git a/src/mixer/MixerAll.cxx b/src/mixer/MixerAll.cxx
index 483660a45..c2fa903f2 100644
--- a/src/mixer/MixerAll.cxx
+++ b/src/mixer/MixerAll.cxx
@@ -33,7 +33,7 @@
 static constexpr Domain mixer_domain("mixer");
 
 static int
-output_mixer_get_volume(const audio_output &ao)
+output_mixer_get_volume(const AudioOutput &ao)
 {
 	if (!ao.enabled)
 		return -1;
@@ -73,7 +73,7 @@ MultipleOutputs::GetVolume() const
 }
 
 static bool
-output_mixer_set_volume(audio_output &ao, unsigned volume)
+output_mixer_set_volume(AudioOutput &ao, unsigned volume)
 {
 	assert(volume <= 100);
 
@@ -108,7 +108,7 @@ MultipleOutputs::SetVolume(unsigned volume)
 }
 
 static int
-output_mixer_get_software_volume(const audio_output &ao)
+output_mixer_get_software_volume(const AudioOutput &ao)
 {
 	if (!ao.enabled)
 		return -1;
diff --git a/src/mixer/MixerControl.hxx b/src/mixer/MixerControl.hxx
index caa1c3054..3f8e11e86 100644
--- a/src/mixer/MixerControl.hxx
+++ b/src/mixer/MixerControl.hxx
@@ -46,7 +46,7 @@ mixer_close(Mixer *mixer);
 
 /**
  * Close the mixer unless the plugin's "global" flag is set.  This is
- * called when the #audio_output is closed.
+ * called when the #AudioOutput is closed.
  */
 void
 mixer_auto_close(Mixer *mixer);
diff --git a/src/output/MultipleOutputs.cxx b/src/output/MultipleOutputs.cxx
index 50f686843..7df89cc55 100644
--- a/src/output/MultipleOutputs.cxx
+++ b/src/output/MultipleOutputs.cxx
@@ -50,11 +50,11 @@ MultipleOutputs::~MultipleOutputs()
 	}
 }
 
-static audio_output *
+static AudioOutput *
 LoadOutput(PlayerControl &pc, const config_param &param)
 {
 	Error error;
-	audio_output *output = audio_output_new(param, pc, error);
+	AudioOutput *output = audio_output_new(param, pc, error);
 	if (output == nullptr) {
 		if (param.line > 0)
 			FormatFatalError("line %i: %s",
@@ -89,7 +89,7 @@ MultipleOutputs::Configure(PlayerControl &pc)
 	}
 }
 
-audio_output *
+AudioOutput *
 MultipleOutputs::FindByName(const char *name) const
 {
 	for (auto i : outputs)
@@ -146,7 +146,7 @@ MultipleOutputs::AllowPlay()
 }
 
 static void
-audio_output_reset_reopen(struct audio_output *ao)
+audio_output_reset_reopen(AudioOutput *ao)
 {
 	const ScopeLock protect(ao->mutex);
 
@@ -259,7 +259,7 @@ MultipleOutputs::Open(const AudioFormat audio_format,
  */
 gcc_pure
 static bool
-chunk_is_consumed_in(const struct audio_output *ao,
+chunk_is_consumed_in(const AudioOutput *ao,
 		     gcc_unused const MusicPipe *pipe,
 		     const struct music_chunk *chunk)
 {
@@ -299,7 +299,7 @@ MultipleOutputs::ClearTailChunk(gcc_unused const struct music_chunk *chunk,
 	assert(pipe->Contains(chunk));
 
 	for (unsigned i = 0, n = outputs.size(); i != n; ++i) {
-		audio_output *ao = outputs[i];
+		AudioOutput *ao = outputs[i];
 
 		/* this mutex will be unlocked by the caller when it's
 		   ready */
diff --git a/src/output/MultipleOutputs.hxx b/src/output/MultipleOutputs.hxx
index e1a8602a9..7790f83a4 100644
--- a/src/output/MultipleOutputs.hxx
+++ b/src/output/MultipleOutputs.hxx
@@ -39,11 +39,11 @@ class MusicBuffer;
 class MusicPipe;
 struct music_chunk;
 struct PlayerControl;
-struct audio_output;
+struct AudioOutput;
 class Error;
 
 class MultipleOutputs {
-	std::vector<audio_output *> outputs;
+	std::vector<AudioOutput *> outputs;
 
 	AudioFormat input_audio_format;
 
@@ -86,13 +86,13 @@ public:
 	/**
 	 * Returns the "i"th audio output device.
 	 */
-	const audio_output &Get(unsigned i) const {
+	const AudioOutput &Get(unsigned i) const {
 		assert(i < Size());
 
 		return *outputs[i];
 	}
 
-	audio_output &Get(unsigned i) {
+	AudioOutput &Get(unsigned i) {
 		assert(i < Size());
 
 		return *outputs[i];
@@ -103,7 +103,7 @@ public:
 	 * Returns nullptr if the name does not exist.
 	 */
 	gcc_pure
-	audio_output *FindByName(const char *name) const;
+	AudioOutput *FindByName(const char *name) const;
 
 	/**
 	 * Checks the "enabled" flag of all audio outputs, and if one has
diff --git a/src/output/OutputCommand.cxx b/src/output/OutputCommand.cxx
index d4c1d844d..6d5690575 100644
--- a/src/output/OutputCommand.cxx
+++ b/src/output/OutputCommand.cxx
@@ -40,7 +40,7 @@ audio_output_enable_index(MultipleOutputs &outputs, unsigned idx)
 	if (idx >= outputs.Size())
 		return false;
 
-	audio_output &ao = outputs.Get(idx);
+	AudioOutput &ao = outputs.Get(idx);
 	if (ao.enabled)
 		return true;
 
@@ -60,7 +60,7 @@ audio_output_disable_index(MultipleOutputs &outputs, unsigned idx)
 	if (idx >= outputs.Size())
 		return false;
 
-	audio_output &ao = outputs.Get(idx);
+	AudioOutput &ao = outputs.Get(idx);
 	if (!ao.enabled)
 		return true;
 
@@ -86,7 +86,7 @@ audio_output_toggle_index(MultipleOutputs &outputs, unsigned idx)
 	if (idx >= outputs.Size())
 		return false;
 
-	audio_output &ao = outputs.Get(idx);
+	AudioOutput &ao = outputs.Get(idx);
 	const bool enabled = ao.enabled = !ao.enabled;
 	idle_add(IDLE_OUTPUT);
 
diff --git a/src/output/OutputControl.cxx b/src/output/OutputControl.cxx
index 1532dbd83..f6844911f 100644
--- a/src/output/OutputControl.cxx
+++ b/src/output/OutputControl.cxx
@@ -41,9 +41,9 @@ struct notify audio_output_client_notify;
 /**
  * Waits for command completion.
  *
- * @param ao the #audio_output instance; must be locked
+ * @param ao the #AudioOutput instance; must be locked
  */
-static void ao_command_wait(struct audio_output *ao)
+static void ao_command_wait(AudioOutput *ao)
 {
 	while (ao->command != AO_COMMAND_NONE) {
 		ao->mutex.unlock();
@@ -53,12 +53,12 @@ static void ao_command_wait(struct audio_output *ao)
 }
 
 /**
- * Sends a command to the #audio_output object, but does not wait for
+ * Sends a command to the #AudioOutput object, but does not wait for
  * completion.
  *
- * @param ao the #audio_output instance; must be locked
+ * @param ao the #AudioOutput instance; must be locked
  */
-static void ao_command_async(struct audio_output *ao,
+static void ao_command_async(AudioOutput *ao,
 			     enum audio_output_command cmd)
 {
 	assert(ao->command == AO_COMMAND_NONE);
@@ -67,31 +67,31 @@ static void ao_command_async(struct audio_output *ao,
 }
 
 /**
- * Sends a command to the #audio_output object and waits for
+ * Sends a command to the #AudioOutput object and waits for
  * completion.
  *
- * @param ao the #audio_output instance; must be locked
+ * @param ao the #AudioOutput instance; must be locked
  */
 static void
-ao_command(struct audio_output *ao, enum audio_output_command cmd)
+ao_command(AudioOutput *ao, enum audio_output_command cmd)
 {
 	ao_command_async(ao, cmd);
 	ao_command_wait(ao);
 }
 
 /**
- * Lock the #audio_output object and execute the command
+ * Lock the #AudioOutput object and execute the command
  * synchronously.
  */
 static void
-ao_lock_command(struct audio_output *ao, enum audio_output_command cmd)
+ao_lock_command(AudioOutput *ao, enum audio_output_command cmd)
 {
 	const ScopeLock protect(ao->mutex);
 	ao_command(ao, cmd);
 }
 
 void
-audio_output_set_replay_gain_mode(struct audio_output *ao,
+audio_output_set_replay_gain_mode(AudioOutput *ao,
 				  ReplayGainMode mode)
 {
 	if (ao->replay_gain_filter != nullptr)
@@ -101,7 +101,7 @@ audio_output_set_replay_gain_mode(struct audio_output *ao,
 }
 
 void
-audio_output_enable(struct audio_output *ao)
+audio_output_enable(AudioOutput *ao)
 {
 	if (!ao->thread.IsDefined()) {
 		if (ao->plugin->enable == nullptr) {
@@ -119,7 +119,7 @@ audio_output_enable(struct audio_output *ao)
 }
 
 void
-audio_output_disable(struct audio_output *ao)
+audio_output_disable(AudioOutput *ao)
 {
 	if (!ao->thread.IsDefined()) {
 		if (ao->plugin->disable == nullptr)
@@ -139,7 +139,7 @@ audio_output_disable(struct audio_output *ao)
  * Object must be locked (and unlocked) by the caller.
  */
 static bool
-audio_output_open(struct audio_output *ao,
+audio_output_open(AudioOutput *ao,
 		  const AudioFormat audio_format,
 		  const MusicPipe &mp)
 {
@@ -199,7 +199,7 @@ audio_output_open(struct audio_output *ao,
  * the caller.
  */
 static void
-audio_output_close_locked(struct audio_output *ao)
+audio_output_close_locked(AudioOutput *ao)
 {
 	assert(ao != nullptr);
 	assert(ao->allow_play);
@@ -216,7 +216,7 @@ audio_output_close_locked(struct audio_output *ao)
 }
 
 bool
-audio_output_update(struct audio_output *ao,
+audio_output_update(AudioOutput *ao,
 		    const AudioFormat audio_format,
 		    const MusicPipe &mp)
 {
@@ -233,7 +233,7 @@ audio_output_update(struct audio_output *ao,
 }
 
 void
-audio_output_play(struct audio_output *ao)
+audio_output_play(AudioOutput *ao)
 {
 	const ScopeLock protect(ao->mutex);
 
@@ -246,7 +246,7 @@ audio_output_play(struct audio_output *ao)
 	}
 }
 
-void audio_output_pause(struct audio_output *ao)
+void audio_output_pause(AudioOutput *ao)
 {
 	if (ao->mixer != nullptr && ao->plugin->pause == nullptr)
 		/* the device has no pause mode: close the mixer,
@@ -262,7 +262,7 @@ void audio_output_pause(struct audio_output *ao)
 }
 
 void
-audio_output_drain_async(struct audio_output *ao)
+audio_output_drain_async(AudioOutput *ao)
 {
 	const ScopeLock protect(ao->mutex);
 
@@ -271,7 +271,7 @@ audio_output_drain_async(struct audio_output *ao)
 		ao_command_async(ao, AO_COMMAND_DRAIN);
 }
 
-void audio_output_cancel(struct audio_output *ao)
+void audio_output_cancel(AudioOutput *ao)
 {
 	const ScopeLock protect(ao->mutex);
 
@@ -282,7 +282,7 @@ void audio_output_cancel(struct audio_output *ao)
 }
 
 void
-audio_output_allow_play(struct audio_output *ao)
+audio_output_allow_play(AudioOutput *ao)
 {
 	const ScopeLock protect(ao->mutex);
 
@@ -292,7 +292,7 @@ audio_output_allow_play(struct audio_output *ao)
 }
 
 void
-audio_output_release(struct audio_output *ao)
+audio_output_release(AudioOutput *ao)
 {
 	if (ao->always_on)
 		audio_output_pause(ao);
@@ -300,7 +300,7 @@ audio_output_release(struct audio_output *ao)
 		audio_output_close(ao);
 }
 
-void audio_output_close(struct audio_output *ao)
+void audio_output_close(AudioOutput *ao)
 {
 	assert(ao != nullptr);
 	assert(!ao->open || !ao->fail_timer.IsDefined());
@@ -309,7 +309,7 @@ void audio_output_close(struct audio_output *ao)
 	audio_output_close_locked(ao);
 }
 
-void audio_output_finish(struct audio_output *ao)
+void audio_output_finish(AudioOutput *ao)
 {
 	audio_output_close(ao);
 
diff --git a/src/output/OutputControl.hxx b/src/output/OutputControl.hxx
index 7195412ef..08d1cbd24 100644
--- a/src/output/OutputControl.hxx
+++ b/src/output/OutputControl.hxx
@@ -24,26 +24,26 @@
 
 #include <stddef.h>
 
-struct audio_output;
+struct AudioOutput;
 struct AudioFormat;
 struct config_param;
 class MusicPipe;
 
 void
-audio_output_set_replay_gain_mode(audio_output *ao,
+audio_output_set_replay_gain_mode(AudioOutput *ao,
 				  ReplayGainMode mode);
 
 /**
  * Enables the device.
  */
 void
-audio_output_enable(audio_output *ao);
+audio_output_enable(AudioOutput *ao);
 
 /**
  * Disables the device.
  */
 void
-audio_output_disable(audio_output *ao);
+audio_output_disable(AudioOutput *ao);
 
 /**
  * Opens or closes the device, depending on the "enabled" flag.
@@ -51,18 +51,18 @@ audio_output_disable(audio_output *ao);
  * @return true if the device is open
  */
 bool
-audio_output_update(audio_output *ao,
+audio_output_update(AudioOutput *ao,
 		    AudioFormat audio_format,
 		    const MusicPipe &mp);
 
 void
-audio_output_play(audio_output *ao);
+audio_output_play(AudioOutput *ao);
 
 void
-audio_output_pause(audio_output *ao);
+audio_output_pause(AudioOutput *ao);
 
 void
-audio_output_drain_async(audio_output *ao);
+audio_output_drain_async(AudioOutput *ao);
 
 /**
  * Clear the "allow_play" flag and send the "CANCEL" command
@@ -70,25 +70,25 @@ audio_output_drain_async(audio_output *ao);
  * audio_output_allow_play().
  */
 void
-audio_output_cancel(audio_output *ao);
+audio_output_cancel(AudioOutput *ao);
 
 /**
  * Set the "allow_play" and signal the thread.
  */
 void
-audio_output_allow_play(audio_output *ao);
+audio_output_allow_play(AudioOutput *ao);
 
 void
-audio_output_close(audio_output *ao);
+audio_output_close(AudioOutput *ao);
 
 /**
  * Closes the audio output, but if the "always_on" flag is set, put it
  * into pause mode instead.
  */
 void
-audio_output_release(audio_output *ao);
+audio_output_release(AudioOutput *ao);
 
 void
-audio_output_finish(audio_output *ao);
+audio_output_finish(AudioOutput *ao);
 
 #endif
diff --git a/src/output/OutputFinish.cxx b/src/output/OutputFinish.cxx
index 16b16f5ce..1f405aaf9 100644
--- a/src/output/OutputFinish.cxx
+++ b/src/output/OutputFinish.cxx
@@ -26,7 +26,7 @@
 #include <assert.h>
 
 void
-ao_base_finish(struct audio_output *ao)
+ao_base_finish(AudioOutput *ao)
 {
 	assert(!ao->open);
 	assert(!ao->fail_timer.IsDefined());
@@ -41,7 +41,7 @@ ao_base_finish(struct audio_output *ao)
 }
 
 void
-audio_output_free(struct audio_output *ao)
+audio_output_free(AudioOutput *ao)
 {
 	assert(!ao->open);
 	assert(!ao->fail_timer.IsDefined());
diff --git a/src/output/OutputInit.cxx b/src/output/OutputInit.cxx
index 9783b36ed..f91e5b5e3 100644
--- a/src/output/OutputInit.cxx
+++ b/src/output/OutputInit.cxx
@@ -93,7 +93,7 @@ audio_output_mixer_type(const config_param &param)
 }
 
 static Mixer *
-audio_output_load_mixer(struct audio_output *ao,
+audio_output_load_mixer(AudioOutput *ao,
 			const config_param &param,
 			const struct mixer_plugin *plugin,
 			Filter &filter_chain,
@@ -128,7 +128,7 @@ audio_output_load_mixer(struct audio_output *ao,
 }
 
 bool
-ao_base_init(struct audio_output *ao,
+ao_base_init(AudioOutput *ao,
 	     const AudioOutputPlugin *plugin,
 	     const config_param &param, Error &error)
 {
@@ -214,7 +214,7 @@ ao_base_init(struct audio_output *ao,
 }
 
 static bool
-audio_output_setup(struct audio_output *ao, const config_param &param,
+audio_output_setup(AudioOutput *ao, const config_param &param,
 		   Error &error)
 {
 
@@ -279,7 +279,7 @@ audio_output_setup(struct audio_output *ao, const config_param &param,
 	return true;
 }
 
-struct audio_output *
+AudioOutput *
 audio_output_new(const config_param &param,
 		 PlayerControl &pc,
 		 Error &error)
@@ -304,7 +304,7 @@ audio_output_new(const config_param &param,
 		}
 	} else {
 		LogWarning(output_domain,
-			   "No 'audio_output' defined in config file");
+			   "No 'AudioOutput' defined in config file");
 
 		plugin = audio_output_detect(error);
 		if (plugin == nullptr)
@@ -315,7 +315,7 @@ audio_output_new(const config_param &param,
 			      plugin->name);
 	}
 
-	struct audio_output *ao = ao_plugin_init(plugin, param, error);
+	AudioOutput *ao = ao_plugin_init(plugin, param, error);
 	if (ao == nullptr)
 		return nullptr;
 
diff --git a/src/output/OutputInternal.hxx b/src/output/OutputInternal.hxx
index 67b6ea644..31b6fd7c7 100644
--- a/src/output/OutputInternal.hxx
+++ b/src/output/OutputInternal.hxx
@@ -60,7 +60,7 @@ enum audio_output_command {
 	AO_COMMAND_KILL
 };
 
-struct audio_output {
+struct AudioOutput {
 	/**
 	 * The device's configured display name.
 	 */
@@ -272,31 +272,31 @@ struct audio_output {
 extern struct notify audio_output_client_notify;
 
 static inline bool
-audio_output_is_open(const struct audio_output *ao)
+audio_output_is_open(const AudioOutput *ao)
 {
 	return ao->open;
 }
 
 static inline bool
-audio_output_command_is_finished(const struct audio_output *ao)
+audio_output_command_is_finished(const AudioOutput *ao)
 {
 	return ao->command == AO_COMMAND_NONE;
 }
 
-struct audio_output *
+AudioOutput *
 audio_output_new(const config_param &param,
 		 PlayerControl &pc,
 		 Error &error);
 
 bool
-ao_base_init(struct audio_output *ao,
+ao_base_init(AudioOutput *ao,
 	     const AudioOutputPlugin *plugin,
 	     const config_param &param, Error &error);
 
 void
-ao_base_finish(struct audio_output *ao);
+ao_base_finish(AudioOutput *ao);
 
 void
-audio_output_free(struct audio_output *ao);
+audio_output_free(AudioOutput *ao);
 
 #endif
diff --git a/src/output/OutputPlugin.cxx b/src/output/OutputPlugin.cxx
index 60c5681ec..1c8d3bb48 100644
--- a/src/output/OutputPlugin.cxx
+++ b/src/output/OutputPlugin.cxx
@@ -21,7 +21,7 @@
 #include "OutputPlugin.hxx"
 #include "OutputInternal.hxx"
 
-struct audio_output *
+AudioOutput *
 ao_plugin_init(const AudioOutputPlugin *plugin,
 	       const config_param &param,
 	       Error &error)
@@ -33,13 +33,13 @@ ao_plugin_init(const AudioOutputPlugin *plugin,
 }
 
 void
-ao_plugin_finish(struct audio_output *ao)
+ao_plugin_finish(AudioOutput *ao)
 {
 	ao->plugin->finish(ao);
 }
 
 bool
-ao_plugin_enable(struct audio_output *ao, Error &error_r)
+ao_plugin_enable(AudioOutput *ao, Error &error_r)
 {
 	return ao->plugin->enable != nullptr
 		? ao->plugin->enable(ao, error_r)
@@ -47,27 +47,27 @@ ao_plugin_enable(struct audio_output *ao, Error &error_r)
 }
 
 void
-ao_plugin_disable(struct audio_output *ao)
+ao_plugin_disable(AudioOutput *ao)
 {
 	if (ao->plugin->disable != nullptr)
 		ao->plugin->disable(ao);
 }
 
 bool
-ao_plugin_open(struct audio_output *ao, AudioFormat &audio_format,
+ao_plugin_open(AudioOutput *ao, AudioFormat &audio_format,
 	       Error &error)
 {
 	return ao->plugin->open(ao, audio_format, error);
 }
 
 void
-ao_plugin_close(struct audio_output *ao)
+ao_plugin_close(AudioOutput *ao)
 {
 	ao->plugin->close(ao);
 }
 
 unsigned
-ao_plugin_delay(struct audio_output *ao)
+ao_plugin_delay(AudioOutput *ao)
 {
 	return ao->plugin->delay != nullptr
 		? ao->plugin->delay(ao)
@@ -75,35 +75,35 @@ ao_plugin_delay(struct audio_output *ao)
 }
 
 void
-ao_plugin_send_tag(struct audio_output *ao, const Tag *tag)
+ao_plugin_send_tag(AudioOutput *ao, const Tag *tag)
 {
 	if (ao->plugin->send_tag != nullptr)
 		ao->plugin->send_tag(ao, tag);
 }
 
 size_t
-ao_plugin_play(struct audio_output *ao, const void *chunk, size_t size,
+ao_plugin_play(AudioOutput *ao, const void *chunk, size_t size,
 	       Error &error)
 {
 	return ao->plugin->play(ao, chunk, size, error);
 }
 
 void
-ao_plugin_drain(struct audio_output *ao)
+ao_plugin_drain(AudioOutput *ao)
 {
 	if (ao->plugin->drain != nullptr)
 		ao->plugin->drain(ao);
 }
 
 void
-ao_plugin_cancel(struct audio_output *ao)
+ao_plugin_cancel(AudioOutput *ao)
 {
 	if (ao->plugin->cancel != nullptr)
 		ao->plugin->cancel(ao);
 }
 
 bool
-ao_plugin_pause(struct audio_output *ao)
+ao_plugin_pause(AudioOutput *ao)
 {
 	return ao->plugin->pause != nullptr && ao->plugin->pause(ao);
 }
diff --git a/src/output/OutputPlugin.hxx b/src/output/OutputPlugin.hxx
index f9f65cad6..3ae35ea3d 100644
--- a/src/output/OutputPlugin.hxx
+++ b/src/output/OutputPlugin.hxx
@@ -27,6 +27,7 @@
 struct config_param;
 struct AudioFormat;
 struct Tag;
+struct AudioOutput;
 class Error;
 
 /**
@@ -53,13 +54,13 @@ struct AudioOutputPlugin {
 	 * @return nullptr on error, or an opaque pointer to the plugin's
 	 * data
 	 */
-	struct audio_output *(*init)(const config_param &param,
+	AudioOutput *(*init)(const config_param &param,
 				     Error &error);
 
 	/**
 	 * Free resources allocated by this device.
 	 */
-	void (*finish)(struct audio_output *data);
+	void (*finish)(AudioOutput *data);
 
 	/**
 	 * Enable the device.  This may allocate resources, preparing
@@ -69,13 +70,13 @@ struct AudioOutputPlugin {
 	 *
 	 * @return true on success, false on error
 	 */
-	bool (*enable)(struct audio_output *data, Error &error);
+	bool (*enable)(AudioOutput *data, Error &error);
 
 	/**
 	 * Disables the device.  It is closed before this method is
 	 * called.
 	 */
-	void (*disable)(struct audio_output *data);
+	void (*disable)(AudioOutput *data);
 
 	/**
 	 * Really open the device.
@@ -83,13 +84,13 @@ struct AudioOutputPlugin {
 	 * @param audio_format the audio format in which data is going
 	 * to be delivered; may be modified by the plugin
 	 */
-	bool (*open)(struct audio_output *data, AudioFormat &audio_format,
+	bool (*open)(AudioOutput *data, AudioFormat &audio_format,
 		     Error &error);
 
 	/**
 	 * Close the device.
 	 */
-	void (*close)(struct audio_output *data);
+	void (*close)(AudioOutput *data);
 
 	/**
 	 * Returns a positive number if the output thread shall delay
@@ -99,33 +100,33 @@ struct AudioOutputPlugin {
 	 *
 	 * @return the number of milliseconds to wait
 	 */
-	unsigned (*delay)(struct audio_output *data);
+	unsigned (*delay)(AudioOutput *data);
 
 	/**
 	 * Display metadata for the next chunk.  Optional method,
 	 * because not all devices can display metadata.
 	 */
-	void (*send_tag)(struct audio_output *data, const Tag *tag);
+	void (*send_tag)(AudioOutput *data, const Tag *tag);
 
 	/**
 	 * Play a chunk of audio data.
 	 *
 	 * @return the number of bytes played, or 0 on error
 	 */
-	size_t (*play)(struct audio_output *data,
+	size_t (*play)(AudioOutput *data,
 		       const void *chunk, size_t size,
 		       Error &error);
 
 	/**
 	 * Wait until the device has finished playing.
 	 */
-	void (*drain)(struct audio_output *data);
+	void (*drain)(AudioOutput *data);
 
 	/**
 	 * Try to cancel data which may still be in the device's
 	 * buffers.
 	 */
-	void (*cancel)(struct audio_output *data);
+	void (*cancel)(AudioOutput *data);
 
 	/**
 	 * Pause the device.  If supported, it may perform a special
@@ -138,7 +139,7 @@ struct AudioOutputPlugin {
 	 * @return false on error (output will be closed then), true
 	 * for continue to pause
 	 */
-	bool (*pause)(struct audio_output *data);
+	bool (*pause)(AudioOutput *data);
 
 	/**
 	 * The mixer plugin associated with this output plugin.  This
@@ -158,45 +159,45 @@ ao_plugin_test_default_device(const AudioOutputPlugin *plugin)
 }
 
 gcc_malloc
-struct audio_output *
+AudioOutput *
 ao_plugin_init(const AudioOutputPlugin *plugin,
 	       const config_param &param,
 	       Error &error);
 
 void
-ao_plugin_finish(struct audio_output *ao);
+ao_plugin_finish(AudioOutput *ao);
 
 bool
-ao_plugin_enable(struct audio_output *ao, Error &error);
+ao_plugin_enable(AudioOutput *ao, Error &error);
 
 void
-ao_plugin_disable(struct audio_output *ao);
+ao_plugin_disable(AudioOutput *ao);
 
 bool
-ao_plugin_open(struct audio_output *ao, AudioFormat &audio_format,
+ao_plugin_open(AudioOutput *ao, AudioFormat &audio_format,
 	       Error &error);
 
 void
-ao_plugin_close(struct audio_output *ao);
+ao_plugin_close(AudioOutput *ao);
 
 gcc_pure
 unsigned
-ao_plugin_delay(struct audio_output *ao);
+ao_plugin_delay(AudioOutput *ao);
 
 void
-ao_plugin_send_tag(struct audio_output *ao, const Tag *tag);
+ao_plugin_send_tag(AudioOutput *ao, const Tag *tag);
 
 size_t
-ao_plugin_play(struct audio_output *ao, const void *chunk, size_t size,
+ao_plugin_play(AudioOutput *ao, const void *chunk, size_t size,
 	       Error &error);
 
 void
-ao_plugin_drain(struct audio_output *ao);
+ao_plugin_drain(AudioOutput *ao);
 
 void
-ao_plugin_cancel(struct audio_output *ao);
+ao_plugin_cancel(AudioOutput *ao);
 
 bool
-ao_plugin_pause(struct audio_output *ao);
+ao_plugin_pause(AudioOutput *ao);
 
 #endif
diff --git a/src/output/OutputPrint.cxx b/src/output/OutputPrint.cxx
index 7e0536bf5..b9fb79607 100644
--- a/src/output/OutputPrint.cxx
+++ b/src/output/OutputPrint.cxx
@@ -32,7 +32,7 @@ void
 printAudioDevices(Client &client, const MultipleOutputs &outputs)
 {
 	for (unsigned i = 0, n = outputs.Size(); i != n; ++i) {
-		const audio_output &ao = outputs.Get(i);
+		const AudioOutput &ao = outputs.Get(i);
 
 		client_printf(client,
 			      "outputid: %i\n"
diff --git a/src/output/OutputState.cxx b/src/output/OutputState.cxx
index abd5dd2ae..f717e3cbb 100644
--- a/src/output/OutputState.cxx
+++ b/src/output/OutputState.cxx
@@ -41,7 +41,7 @@ void
 audio_output_state_save(FILE *fp, const MultipleOutputs &outputs)
 {
 	for (unsigned i = 0, n = outputs.Size(); i != n; ++i) {
-		const audio_output &ao = outputs.Get(i);
+		const AudioOutput &ao = outputs.Get(i);
 
 		fprintf(fp, AUDIO_DEVICE_STATE "%d:%s\n",
 			ao.enabled, ao.name);
@@ -69,7 +69,7 @@ audio_output_state_read(const char *line, MultipleOutputs &outputs)
 		return true;
 
 	name = endptr + 1;
-	audio_output *ao = outputs.FindByName(name);
+	AudioOutput *ao = outputs.FindByName(name);
 	if (ao == NULL) {
 		FormatDebug(output_domain,
 			    "Ignoring device state for '%s'", name);
diff --git a/src/output/OutputThread.cxx b/src/output/OutputThread.cxx
index 52dfc63ef..f2ea048df 100644
--- a/src/output/OutputThread.cxx
+++ b/src/output/OutputThread.cxx
@@ -40,7 +40,7 @@
 #include <assert.h>
 #include <string.h>
 
-static void ao_command_finished(struct audio_output *ao)
+static void ao_command_finished(AudioOutput *ao)
 {
 	assert(ao->command != AO_COMMAND_NONE);
 	ao->command = AO_COMMAND_NONE;
@@ -51,7 +51,7 @@ static void ao_command_finished(struct audio_output *ao)
 }
 
 static bool
-ao_enable(struct audio_output *ao)
+ao_enable(AudioOutput *ao)
 {
 	Error error;
 	bool success;
@@ -74,10 +74,10 @@ ao_enable(struct audio_output *ao)
 }
 
 static void
-ao_close(struct audio_output *ao, bool drain);
+ao_close(AudioOutput *ao, bool drain);
 
 static void
-ao_disable(struct audio_output *ao)
+ao_disable(AudioOutput *ao)
 {
 	if (ao->open)
 		ao_close(ao, false);
@@ -92,7 +92,7 @@ ao_disable(struct audio_output *ao)
 }
 
 static AudioFormat
-ao_filter_open(struct audio_output *ao, AudioFormat &format,
+ao_filter_open(AudioOutput *ao, AudioFormat &format,
 	       Error &error_r)
 {
 	assert(format.IsValid());
@@ -121,7 +121,7 @@ ao_filter_open(struct audio_output *ao, AudioFormat &format,
 }
 
 static void
-ao_filter_close(struct audio_output *ao)
+ao_filter_close(AudioOutput *ao)
 {
 	if (ao->replay_gain_filter != nullptr)
 		ao->replay_gain_filter->Close();
@@ -132,7 +132,7 @@ ao_filter_close(struct audio_output *ao)
 }
 
 static void
-ao_open(struct audio_output *ao)
+ao_open(AudioOutput *ao)
 {
 	bool success;
 	Error error;
@@ -207,7 +207,7 @@ ao_open(struct audio_output *ao)
 }
 
 static void
-ao_close(struct audio_output *ao, bool drain)
+ao_close(AudioOutput *ao, bool drain)
 {
 	assert(ao->open);
 
@@ -233,7 +233,7 @@ ao_close(struct audio_output *ao, bool drain)
 }
 
 static void
-ao_reopen_filter(struct audio_output *ao)
+ao_reopen_filter(AudioOutput *ao)
 {
 	Error error;
 
@@ -266,7 +266,7 @@ ao_reopen_filter(struct audio_output *ao)
 }
 
 static void
-ao_reopen(struct audio_output *ao)
+ao_reopen(AudioOutput *ao)
 {
 	if (!ao->config_audio_format.IsFullyDefined()) {
 		if (ao->open) {
@@ -297,7 +297,7 @@ ao_reopen(struct audio_output *ao)
  * was issued
  */
 static bool
-ao_wait(struct audio_output *ao)
+ao_wait(AudioOutput *ao)
 {
 	while (true) {
 		unsigned delay = ao_plugin_delay(ao);
@@ -312,7 +312,7 @@ ao_wait(struct audio_output *ao)
 }
 
 static const void *
-ao_chunk_data(struct audio_output *ao, const struct music_chunk *chunk,
+ao_chunk_data(AudioOutput *ao, const struct music_chunk *chunk,
 	      Filter *replay_gain_filter,
 	      unsigned *replay_gain_serial_p,
 	      size_t *length_r)
@@ -352,7 +352,7 @@ ao_chunk_data(struct audio_output *ao, const struct music_chunk *chunk,
 }
 
 static const void *
-ao_filter_chunk(struct audio_output *ao, const struct music_chunk *chunk,
+ao_filter_chunk(AudioOutput *ao, const struct music_chunk *chunk,
 		size_t *length_r)
 {
 	size_t length;
@@ -422,7 +422,7 @@ ao_filter_chunk(struct audio_output *ao, const struct music_chunk *chunk,
 }
 
 static bool
-ao_play_chunk(struct audio_output *ao, const struct music_chunk *chunk)
+ao_play_chunk(AudioOutput *ao, const struct music_chunk *chunk)
 {
 	assert(ao != nullptr);
 	assert(ao->filter != nullptr);
@@ -485,7 +485,7 @@ ao_play_chunk(struct audio_output *ao, const struct music_chunk *chunk)
 }
 
 static const struct music_chunk *
-ao_next_chunk(struct audio_output *ao)
+ao_next_chunk(AudioOutput *ao)
 {
 	return ao->chunk != nullptr
 		/* continue the previous play() call */
@@ -503,7 +503,7 @@ ao_next_chunk(struct audio_output *ao)
  * tail of the pipe was already reached
  */
 static bool
-ao_play(struct audio_output *ao)
+ao_play(AudioOutput *ao)
 {
 	bool success;
 	const struct music_chunk *chunk;
@@ -547,7 +547,7 @@ ao_play(struct audio_output *ao)
 	return true;
 }
 
-static void ao_pause(struct audio_output *ao)
+static void ao_pause(AudioOutput *ao)
 {
 	bool ret;
 
@@ -578,7 +578,7 @@ static void ao_pause(struct audio_output *ao)
 static void
 audio_output_task(void *arg)
 {
-	struct audio_output *ao = (struct audio_output *)arg;
+	AudioOutput *ao = (AudioOutput *)arg;
 
 	FormatThreadName("output:%s", ao->name);
 
@@ -680,7 +680,7 @@ audio_output_task(void *arg)
 	}
 }
 
-void audio_output_thread_start(struct audio_output *ao)
+void audio_output_thread_start(AudioOutput *ao)
 {
 	assert(ao->command == AO_COMMAND_NONE);
 
diff --git a/src/output/OutputThread.hxx b/src/output/OutputThread.hxx
index 1cdbd65f2..716fe8319 100644
--- a/src/output/OutputThread.hxx
+++ b/src/output/OutputThread.hxx
@@ -20,9 +20,9 @@
 #ifndef MPD_OUTPUT_THREAD_HXX
 #define MPD_OUTPUT_THREAD_HXX
 
-struct audio_output;
+struct AudioOutput;
 
 void
-audio_output_thread_start(audio_output *ao);
+audio_output_thread_start(AudioOutput *ao);
 
 #endif
diff --git a/src/output/plugins/AlsaOutputPlugin.cxx b/src/output/plugins/AlsaOutputPlugin.cxx
index fac94a13d..d88fe9f5e 100644
--- a/src/output/plugins/AlsaOutputPlugin.cxx
+++ b/src/output/plugins/AlsaOutputPlugin.cxx
@@ -44,7 +44,7 @@ typedef snd_pcm_sframes_t alsa_writei_t(snd_pcm_t * pcm, const void *buffer,
 					snd_pcm_uframes_t size);
 
 struct AlsaOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	Manual<PcmExport> pcm_export;
 
@@ -169,7 +169,7 @@ alsa_configure(AlsaOutput *ad, const config_param &param)
 #endif
 }
 
-static struct audio_output *
+static AudioOutput *
 alsa_init(const config_param &param, Error &error)
 {
 	AlsaOutput *ad = new AlsaOutput();
@@ -185,7 +185,7 @@ alsa_init(const config_param &param, Error &error)
 }
 
 static void
-alsa_finish(struct audio_output *ao)
+alsa_finish(AudioOutput *ao)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -197,7 +197,7 @@ alsa_finish(struct audio_output *ao)
 }
 
 static bool
-alsa_output_enable(struct audio_output *ao, gcc_unused Error &error)
+alsa_output_enable(AudioOutput *ao, gcc_unused Error &error)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -206,7 +206,7 @@ alsa_output_enable(struct audio_output *ao, gcc_unused Error &error)
 }
 
 static void
-alsa_output_disable(struct audio_output *ao)
+alsa_output_disable(AudioOutput *ao)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -671,7 +671,7 @@ alsa_setup_or_dsd(AlsaOutput *ad, AudioFormat &audio_format,
 }
 
 static bool
-alsa_open(struct audio_output *ao, AudioFormat &audio_format, Error &error)
+alsa_open(AudioOutput *ao, AudioFormat &audio_format, Error &error)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -774,7 +774,7 @@ alsa_recover(AlsaOutput *ad, int err)
 }
 
 static void
-alsa_drain(struct audio_output *ao)
+alsa_drain(AudioOutput *ao)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -795,7 +795,7 @@ alsa_drain(struct audio_output *ao)
 }
 
 static void
-alsa_cancel(struct audio_output *ao)
+alsa_cancel(AudioOutput *ao)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -805,7 +805,7 @@ alsa_cancel(struct audio_output *ao)
 }
 
 static void
-alsa_close(struct audio_output *ao)
+alsa_close(AudioOutput *ao)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
 
@@ -814,7 +814,7 @@ alsa_close(struct audio_output *ao)
 }
 
 static size_t
-alsa_play(struct audio_output *ao, const void *chunk, size_t size,
+alsa_play(AudioOutput *ao, const void *chunk, size_t size,
 	  Error &error)
 {
 	AlsaOutput *ad = (AlsaOutput *)ao;
diff --git a/src/output/plugins/AoOutputPlugin.cxx b/src/output/plugins/AoOutputPlugin.cxx
index 37b216f90..8205e2fd6 100644
--- a/src/output/plugins/AoOutputPlugin.cxx
+++ b/src/output/plugins/AoOutputPlugin.cxx
@@ -35,7 +35,7 @@ static ao_sample_format OUR_AO_FORMAT_INITIALIZER;
 static unsigned ao_output_ref;
 
 struct AoOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	size_t write_size;
 	int driver;
@@ -152,7 +152,7 @@ AoOutput::Configure(const config_param &param, Error &error)
 	return true;
 }
 
-static struct audio_output *
+static AudioOutput *
 ao_output_init(const config_param &param, Error &error)
 {
 	AoOutput *ad = new AoOutput();
@@ -172,7 +172,7 @@ ao_output_init(const config_param &param, Error &error)
 }
 
 static void
-ao_output_finish(struct audio_output *ao)
+ao_output_finish(AudioOutput *ao)
 {
 	AoOutput *ad = (AoOutput *)ao;
 
@@ -187,7 +187,7 @@ ao_output_finish(struct audio_output *ao)
 }
 
 static void
-ao_output_close(struct audio_output *ao)
+ao_output_close(AudioOutput *ao)
 {
 	AoOutput *ad = (AoOutput *)ao;
 
@@ -195,7 +195,7 @@ ao_output_close(struct audio_output *ao)
 }
 
 static bool
-ao_output_open(struct audio_output *ao, AudioFormat &audio_format,
+ao_output_open(AudioOutput *ao, AudioFormat &audio_format,
 	       Error &error)
 {
 	ao_sample_format format = OUR_AO_FORMAT_INITIALIZER;
@@ -251,7 +251,7 @@ static int ao_play_deconst(ao_device *device, const void *output_samples,
 }
 
 static size_t
-ao_output_play(struct audio_output *ao, const void *chunk, size_t size,
+ao_output_play(AudioOutput *ao, const void *chunk, size_t size,
 	       Error &error)
 {
 	AoOutput *ad = (AoOutput *)ao;
diff --git a/src/output/plugins/FifoOutputPlugin.cxx b/src/output/plugins/FifoOutputPlugin.cxx
index 27b8e4192..2f839af22 100644
--- a/src/output/plugins/FifoOutputPlugin.cxx
+++ b/src/output/plugins/FifoOutputPlugin.cxx
@@ -36,7 +36,7 @@
 #define FIFO_BUFFER_SIZE 65536 /* pipe capacity on Linux >= 2.6.11 */
 
 struct FifoOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	AllocatedPath path;
 	std::string path_utf8;
@@ -172,7 +172,7 @@ fifo_open(FifoOutput *fd, Error &error)
 	return fd->Open(error);
 }
 
-static struct audio_output *
+static AudioOutput *
 fifo_output_init(const config_param &param, Error &error)
 {
 	FifoOutput *fd = new FifoOutput();
@@ -204,7 +204,7 @@ fifo_output_init(const config_param &param, Error &error)
 }
 
 static void
-fifo_output_finish(struct audio_output *ao)
+fifo_output_finish(AudioOutput *ao)
 {
 	FifoOutput *fd = (FifoOutput *)ao;
 
@@ -214,7 +214,7 @@ fifo_output_finish(struct audio_output *ao)
 }
 
 static bool
-fifo_output_open(struct audio_output *ao, AudioFormat &audio_format,
+fifo_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		 gcc_unused Error &error)
 {
 	FifoOutput *fd = (FifoOutput *)ao;
@@ -225,7 +225,7 @@ fifo_output_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-fifo_output_close(struct audio_output *ao)
+fifo_output_close(AudioOutput *ao)
 {
 	FifoOutput *fd = (FifoOutput *)ao;
 
@@ -233,7 +233,7 @@ fifo_output_close(struct audio_output *ao)
 }
 
 static void
-fifo_output_cancel(struct audio_output *ao)
+fifo_output_cancel(AudioOutput *ao)
 {
 	FifoOutput *fd = (FifoOutput *)ao;
 	char buf[FIFO_BUFFER_SIZE];
@@ -252,7 +252,7 @@ fifo_output_cancel(struct audio_output *ao)
 }
 
 static unsigned
-fifo_output_delay(struct audio_output *ao)
+fifo_output_delay(AudioOutput *ao)
 {
 	FifoOutput *fd = (FifoOutput *)ao;
 
@@ -262,7 +262,7 @@ fifo_output_delay(struct audio_output *ao)
 }
 
 static size_t
-fifo_output_play(struct audio_output *ao, const void *chunk, size_t size,
+fifo_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		 Error &error)
 {
 	FifoOutput *fd = (FifoOutput *)ao;
diff --git a/src/output/plugins/HttpdInternal.hxx b/src/output/plugins/HttpdInternal.hxx
index 506730d11..1d48c3ad5 100644
--- a/src/output/plugins/HttpdInternal.hxx
+++ b/src/output/plugins/HttpdInternal.hxx
@@ -51,7 +51,7 @@ struct Encoder;
 struct Tag;
 
 class HttpdOutput final : ServerSocket, DeferredMonitor {
-	struct audio_output base;
+	AudioOutput base;
 
 	/**
 	 * True if the audio output is open and accepts client
@@ -157,7 +157,7 @@ public:
 #pragma GCC diagnostic ignored "-Winvalid-offsetof"
 #endif
 
-	static constexpr HttpdOutput *Cast(audio_output *ao) {
+	static constexpr HttpdOutput *Cast(AudioOutput *ao) {
 		return ContainerCast(ao, HttpdOutput, base);
 	}
 
@@ -175,7 +175,7 @@ public:
 
 	bool Configure(const config_param &param, Error &error);
 
-	audio_output *InitAndConfigure(const config_param &param,
+	AudioOutput *InitAndConfigure(const config_param &param,
 				       Error &error) {
 		if (!Init(param, error))
 			return nullptr;
diff --git a/src/output/plugins/HttpdOutputPlugin.cxx b/src/output/plugins/HttpdOutputPlugin.cxx
index f1e1e3701..042b040a1 100644
--- a/src/output/plugins/HttpdOutputPlugin.cxx
+++ b/src/output/plugins/HttpdOutputPlugin.cxx
@@ -139,12 +139,12 @@ HttpdOutput::Init(const config_param &param, Error &error)
 	return ao_base_init(&base, &httpd_output_plugin, param, error);
 }
 
-static struct audio_output *
+static AudioOutput *
 httpd_output_init(const config_param &param, Error &error)
 {
 	HttpdOutput *httpd = new HttpdOutput(io_thread_get());
 
-	audio_output *result = httpd->InitAndConfigure(param, error);
+	AudioOutput *result = httpd->InitAndConfigure(param, error);
 	if (result == nullptr)
 		delete httpd;
 
@@ -152,7 +152,7 @@ httpd_output_init(const config_param &param, Error &error)
 }
 
 static void
-httpd_output_finish(struct audio_output *ao)
+httpd_output_finish(AudioOutput *ao)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -276,7 +276,7 @@ HttpdOutput::ReadPage()
 }
 
 static bool
-httpd_output_enable(struct audio_output *ao, Error &error)
+httpd_output_enable(AudioOutput *ao, Error &error)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -284,7 +284,7 @@ httpd_output_enable(struct audio_output *ao, Error &error)
 }
 
 static void
-httpd_output_disable(struct audio_output *ao)
+httpd_output_disable(AudioOutput *ao)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -329,7 +329,7 @@ HttpdOutput::Open(AudioFormat &audio_format, Error &error)
 }
 
 static bool
-httpd_output_open(struct audio_output *ao, AudioFormat &audio_format,
+httpd_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		  Error &error)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
@@ -358,7 +358,7 @@ HttpdOutput::Close()
 }
 
 static void
-httpd_output_close(struct audio_output *ao)
+httpd_output_close(AudioOutput *ao)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -411,7 +411,7 @@ HttpdOutput::Delay() const
 }
 
 static unsigned
-httpd_output_delay(struct audio_output *ao)
+httpd_output_delay(AudioOutput *ao)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -476,7 +476,7 @@ HttpdOutput::Play(const void *chunk, size_t size, Error &error)
 }
 
 static size_t
-httpd_output_play(struct audio_output *ao, const void *chunk, size_t size,
+httpd_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		  Error &error)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
@@ -485,7 +485,7 @@ httpd_output_play(struct audio_output *ao, const void *chunk, size_t size,
 }
 
 static bool
-httpd_output_pause(struct audio_output *ao)
+httpd_output_pause(AudioOutput *ao)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -548,7 +548,7 @@ HttpdOutput::SendTag(const Tag *tag)
 }
 
 static void
-httpd_output_tag(struct audio_output *ao, const Tag *tag)
+httpd_output_tag(AudioOutput *ao, const Tag *tag)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
@@ -573,7 +573,7 @@ HttpdOutput::CancelAllClients()
 }
 
 static void
-httpd_output_cancel(struct audio_output *ao)
+httpd_output_cancel(AudioOutput *ao)
 {
 	HttpdOutput *httpd = HttpdOutput::Cast(ao);
 
diff --git a/src/output/plugins/JackOutputPlugin.cxx b/src/output/plugins/JackOutputPlugin.cxx
index f5e039a17..fcbe2b75b 100644
--- a/src/output/plugins/JackOutputPlugin.cxx
+++ b/src/output/plugins/JackOutputPlugin.cxx
@@ -42,7 +42,7 @@ enum {
 static const size_t jack_sample_size = sizeof(jack_default_audio_sample_t);
 
 struct JackOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	/**
 	 * libjack options passed to jack_client_open().
@@ -310,7 +310,7 @@ parse_port_list(const char *source, char **dest, Error &error)
 	return n;
 }
 
-static struct audio_output *
+static AudioOutput *
 mpd_jack_init(const config_param &param, Error &error)
 {
 	JackOutput *jd = new JackOutput();
@@ -389,7 +389,7 @@ mpd_jack_init(const config_param &param, Error &error)
 }
 
 static void
-mpd_jack_finish(struct audio_output *ao)
+mpd_jack_finish(AudioOutput *ao)
 {
 	JackOutput *jd = (JackOutput *)ao;
 
@@ -404,7 +404,7 @@ mpd_jack_finish(struct audio_output *ao)
 }
 
 static bool
-mpd_jack_enable(struct audio_output *ao, Error &error)
+mpd_jack_enable(AudioOutput *ao, Error &error)
 {
 	JackOutput *jd = (JackOutput *)ao;
 
@@ -415,7 +415,7 @@ mpd_jack_enable(struct audio_output *ao, Error &error)
 }
 
 static void
-mpd_jack_disable(struct audio_output *ao)
+mpd_jack_disable(AudioOutput *ao)
 {
 	JackOutput *jd = (JackOutput *)ao;
 
@@ -579,7 +579,7 @@ mpd_jack_start(JackOutput *jd, Error &error)
 }
 
 static bool
-mpd_jack_open(struct audio_output *ao, AudioFormat &audio_format,
+mpd_jack_open(AudioOutput *ao, AudioFormat &audio_format,
 	      Error &error)
 {
 	JackOutput *jd = (JackOutput *)ao;
@@ -604,7 +604,7 @@ mpd_jack_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-mpd_jack_close(gcc_unused struct audio_output *ao)
+mpd_jack_close(gcc_unused AudioOutput *ao)
 {
 	JackOutput *jd = (JackOutput *)ao;
 
@@ -612,7 +612,7 @@ mpd_jack_close(gcc_unused struct audio_output *ao)
 }
 
 static unsigned
-mpd_jack_delay(struct audio_output *ao)
+mpd_jack_delay(AudioOutput *ao)
 {
 	JackOutput *jd = (JackOutput *)ao;
 
@@ -689,7 +689,7 @@ mpd_jack_write_samples(JackOutput *jd, const void *src,
 }
 
 static size_t
-mpd_jack_play(struct audio_output *ao, const void *chunk, size_t size,
+mpd_jack_play(AudioOutput *ao, const void *chunk, size_t size,
 	      Error &error)
 {
 	JackOutput *jd = (JackOutput *)ao;
@@ -734,7 +734,7 @@ mpd_jack_play(struct audio_output *ao, const void *chunk, size_t size,
 }
 
 static bool
-mpd_jack_pause(struct audio_output *ao)
+mpd_jack_pause(AudioOutput *ao)
 {
 	JackOutput *jd = (JackOutput *)ao;
 
diff --git a/src/output/plugins/NullOutputPlugin.cxx b/src/output/plugins/NullOutputPlugin.cxx
index 8d7f4e6e5..c5dff894c 100644
--- a/src/output/plugins/NullOutputPlugin.cxx
+++ b/src/output/plugins/NullOutputPlugin.cxx
@@ -23,7 +23,7 @@
 #include "Timer.hxx"
 
 struct NullOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	bool sync;
 
@@ -39,7 +39,7 @@ struct NullOutput {
 	}
 };
 
-static struct audio_output *
+static AudioOutput *
 null_init(const config_param &param, Error &error)
 {
 	NullOutput *nd = new NullOutput();
@@ -55,7 +55,7 @@ null_init(const config_param &param, Error &error)
 }
 
 static void
-null_finish(struct audio_output *ao)
+null_finish(AudioOutput *ao)
 {
 	NullOutput *nd = (NullOutput *)ao;
 
@@ -64,7 +64,7 @@ null_finish(struct audio_output *ao)
 }
 
 static bool
-null_open(struct audio_output *ao, AudioFormat &audio_format,
+null_open(AudioOutput *ao, AudioFormat &audio_format,
 	  gcc_unused Error &error)
 {
 	NullOutput *nd = (NullOutput *)ao;
@@ -76,7 +76,7 @@ null_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-null_close(struct audio_output *ao)
+null_close(AudioOutput *ao)
 {
 	NullOutput *nd = (NullOutput *)ao;
 
@@ -85,7 +85,7 @@ null_close(struct audio_output *ao)
 }
 
 static unsigned
-null_delay(struct audio_output *ao)
+null_delay(AudioOutput *ao)
 {
 	NullOutput *nd = (NullOutput *)ao;
 
@@ -95,7 +95,7 @@ null_delay(struct audio_output *ao)
 }
 
 static size_t
-null_play(struct audio_output *ao, gcc_unused const void *chunk, size_t size,
+null_play(AudioOutput *ao, gcc_unused const void *chunk, size_t size,
 	  gcc_unused Error &error)
 {
 	NullOutput *nd = (NullOutput *)ao;
@@ -112,7 +112,7 @@ null_play(struct audio_output *ao, gcc_unused const void *chunk, size_t size,
 }
 
 static void
-null_cancel(struct audio_output *ao)
+null_cancel(AudioOutput *ao)
 {
 	NullOutput *nd = (NullOutput *)ao;
 
diff --git a/src/output/plugins/OSXOutputPlugin.cxx b/src/output/plugins/OSXOutputPlugin.cxx
index c58701e0e..249f61144 100644
--- a/src/output/plugins/OSXOutputPlugin.cxx
+++ b/src/output/plugins/OSXOutputPlugin.cxx
@@ -33,7 +33,7 @@
 #include <CoreServices/CoreServices.h>
 
 struct OSXOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	/* configuration settings */
 	OSType component_subtype;
@@ -77,7 +77,7 @@ osx_output_configure(OSXOutput *oo, const config_param &param)
 	}
 }
 
-static struct audio_output *
+static AudioOutput *
 osx_output_init(const config_param &param, Error &error)
 {
 	OSXOutput *oo = new OSXOutput();
@@ -92,7 +92,7 @@ osx_output_init(const config_param &param, Error &error)
 }
 
 static void
-osx_output_finish(struct audio_output *ao)
+osx_output_finish(AudioOutput *ao)
 {
 	OSXOutput *oo = (OSXOutput *)ao;
 
@@ -231,7 +231,7 @@ osx_render(void *vdata,
 }
 
 static bool
-osx_output_enable(struct audio_output *ao, Error &error)
+osx_output_enable(AudioOutput *ao, Error &error)
 {
 	OSXOutput *oo = (OSXOutput *)ao;
 
@@ -282,7 +282,7 @@ osx_output_enable(struct audio_output *ao, Error &error)
 }
 
 static void
-osx_output_disable(struct audio_output *ao)
+osx_output_disable(AudioOutput *ao)
 {
 	OSXOutput *oo = (OSXOutput *)ao;
 
@@ -290,7 +290,7 @@ osx_output_disable(struct audio_output *ao)
 }
 
 static void
-osx_output_cancel(struct audio_output *ao)
+osx_output_cancel(AudioOutput *ao)
 {
 	OSXOutput *od = (OSXOutput *)ao;
 
@@ -299,7 +299,7 @@ osx_output_cancel(struct audio_output *ao)
 }
 
 static void
-osx_output_close(struct audio_output *ao)
+osx_output_close(AudioOutput *ao)
 {
 	OSXOutput *od = (OSXOutput *)ao;
 
@@ -310,7 +310,7 @@ osx_output_close(struct audio_output *ao)
 }
 
 static bool
-osx_output_open(struct audio_output *ao, AudioFormat &audio_format,
+osx_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		Error &error)
 {
 	OSXOutput *od = (OSXOutput *)ao;
@@ -383,7 +383,7 @@ osx_output_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static size_t
-osx_output_play(struct audio_output *ao, const void *chunk, size_t size,
+osx_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		gcc_unused Error &error)
 {
 	OSXOutput *od = (OSXOutput *)ao;
diff --git a/src/output/plugins/OpenALOutputPlugin.cxx b/src/output/plugins/OpenALOutputPlugin.cxx
index 7e8df66ea..13b4ec209 100644
--- a/src/output/plugins/OpenALOutputPlugin.cxx
+++ b/src/output/plugins/OpenALOutputPlugin.cxx
@@ -37,7 +37,7 @@
 #define NUM_BUFFERS 16
 
 struct OpenALOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	const char *device_name;
 	ALCdevice *device;
@@ -133,7 +133,7 @@ openal_setup_context(OpenALOutput *od, Error &error)
 	return true;
 }
 
-static struct audio_output *
+static AudioOutput *
 openal_init(const config_param &param, Error &error)
 {
 	const char *device_name = param.GetBlockValue("device");
@@ -153,7 +153,7 @@ openal_init(const config_param &param, Error &error)
 }
 
 static void
-openal_finish(struct audio_output *ao)
+openal_finish(AudioOutput *ao)
 {
 	OpenALOutput *od = (OpenALOutput *)ao;
 
@@ -162,7 +162,7 @@ openal_finish(struct audio_output *ao)
 }
 
 static bool
-openal_open(struct audio_output *ao, AudioFormat &audio_format,
+openal_open(AudioOutput *ao, AudioFormat &audio_format,
 	    Error &error)
 {
 	OpenALOutput *od = (OpenALOutput *)ao;
@@ -196,7 +196,7 @@ openal_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-openal_close(struct audio_output *ao)
+openal_close(AudioOutput *ao)
 {
 	OpenALOutput *od = (OpenALOutput *)ao;
 
@@ -208,7 +208,7 @@ openal_close(struct audio_output *ao)
 }
 
 static unsigned
-openal_delay(struct audio_output *ao)
+openal_delay(AudioOutput *ao)
 {
 	OpenALOutput *od = (OpenALOutput *)ao;
 
@@ -221,7 +221,7 @@ openal_delay(struct audio_output *ao)
 }
 
 static size_t
-openal_play(struct audio_output *ao, const void *chunk, size_t size,
+openal_play(AudioOutput *ao, const void *chunk, size_t size,
 	    gcc_unused Error &error)
 {
 	OpenALOutput *od = (OpenALOutput *)ao;
@@ -253,7 +253,7 @@ openal_play(struct audio_output *ao, const void *chunk, size_t size,
 }
 
 static void
-openal_cancel(struct audio_output *ao)
+openal_cancel(AudioOutput *ao)
 {
 	OpenALOutput *od = (OpenALOutput *)ao;
 
diff --git a/src/output/plugins/OssOutputPlugin.cxx b/src/output/plugins/OssOutputPlugin.cxx
index 384637a13..001f97463 100644
--- a/src/output/plugins/OssOutputPlugin.cxx
+++ b/src/output/plugins/OssOutputPlugin.cxx
@@ -57,7 +57,7 @@
 #endif
 
 struct OssOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 #ifdef AFMT_S24_PACKED
 	Manual<PcmExport> pcm_export;
@@ -149,7 +149,7 @@ oss_output_test_default_device(void)
 	return false;
 }
 
-static struct audio_output *
+static AudioOutput *
 oss_open_default(Error &error)
 {
 	int err[ARRAY_SIZE(default_devices)];
@@ -199,7 +199,7 @@ oss_open_default(Error &error)
 	return NULL;
 }
 
-static struct audio_output *
+static AudioOutput *
 oss_output_init(const config_param &param, Error &error)
 {
 	const char *device = param.GetBlockValue("device");
@@ -218,7 +218,7 @@ oss_output_init(const config_param &param, Error &error)
 }
 
 static void
-oss_output_finish(struct audio_output *ao)
+oss_output_finish(AudioOutput *ao)
 {
 	OssOutput *od = (OssOutput *)ao;
 
@@ -229,7 +229,7 @@ oss_output_finish(struct audio_output *ao)
 #ifdef AFMT_S24_PACKED
 
 static bool
-oss_output_enable(struct audio_output *ao, gcc_unused Error &error)
+oss_output_enable(AudioOutput *ao, gcc_unused Error &error)
 {
 	OssOutput *od = (OssOutput *)ao;
 
@@ -238,7 +238,7 @@ oss_output_enable(struct audio_output *ao, gcc_unused Error &error)
 }
 
 static void
-oss_output_disable(struct audio_output *ao)
+oss_output_disable(AudioOutput *ao)
 {
 	OssOutput *od = (OssOutput *)ao;
 
@@ -680,7 +680,7 @@ oss_reopen(OssOutput *od, Error &error)
 }
 
 static bool
-oss_output_open(struct audio_output *ao, AudioFormat &audio_format,
+oss_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		Error &error)
 {
 	OssOutput *od = (OssOutput *)ao;
@@ -702,7 +702,7 @@ oss_output_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-oss_output_close(struct audio_output *ao)
+oss_output_close(AudioOutput *ao)
 {
 	OssOutput *od = (OssOutput *)ao;
 
@@ -710,7 +710,7 @@ oss_output_close(struct audio_output *ao)
 }
 
 static void
-oss_output_cancel(struct audio_output *ao)
+oss_output_cancel(AudioOutput *ao)
 {
 	OssOutput *od = (OssOutput *)ao;
 
@@ -721,7 +721,7 @@ oss_output_cancel(struct audio_output *ao)
 }
 
 static size_t
-oss_output_play(struct audio_output *ao, const void *chunk, size_t size,
+oss_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		Error &error)
 {
 	OssOutput *od = (OssOutput *)ao;
diff --git a/src/output/plugins/PipeOutputPlugin.cxx b/src/output/plugins/PipeOutputPlugin.cxx
index 9aa36f1ed..b872614ea 100644
--- a/src/output/plugins/PipeOutputPlugin.cxx
+++ b/src/output/plugins/PipeOutputPlugin.cxx
@@ -29,7 +29,7 @@
 #include <stdio.h>
 
 struct PipeOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	std::string cmd;
 	FILE *fh;
@@ -61,7 +61,7 @@ PipeOutput::Configure(const config_param &param, Error &error)
 	return true;
 }
 
-static struct audio_output *
+static AudioOutput *
 pipe_output_init(const config_param &param, Error &error)
 {
 	PipeOutput *pd = new PipeOutput();
@@ -81,7 +81,7 @@ pipe_output_init(const config_param &param, Error &error)
 }
 
 static void
-pipe_output_finish(struct audio_output *ao)
+pipe_output_finish(AudioOutput *ao)
 {
 	PipeOutput *pd = (PipeOutput *)ao;
 
@@ -90,7 +90,7 @@ pipe_output_finish(struct audio_output *ao)
 }
 
 static bool
-pipe_output_open(struct audio_output *ao,
+pipe_output_open(AudioOutput *ao,
 		 gcc_unused AudioFormat &audio_format,
 		 Error &error)
 {
@@ -107,7 +107,7 @@ pipe_output_open(struct audio_output *ao,
 }
 
 static void
-pipe_output_close(struct audio_output *ao)
+pipe_output_close(AudioOutput *ao)
 {
 	PipeOutput *pd = (PipeOutput *)ao;
 
@@ -115,7 +115,7 @@ pipe_output_close(struct audio_output *ao)
 }
 
 static size_t
-pipe_output_play(struct audio_output *ao, const void *chunk, size_t size,
+pipe_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		 Error &error)
 {
 	PipeOutput *pd = (PipeOutput *)ao;
diff --git a/src/output/plugins/PulseOutputPlugin.cxx b/src/output/plugins/PulseOutputPlugin.cxx
index b46774f71..b8957a563 100644
--- a/src/output/plugins/PulseOutputPlugin.cxx
+++ b/src/output/plugins/PulseOutputPlugin.cxx
@@ -42,7 +42,7 @@
 #define MPD_PULSE_NAME "Music Player Daemon"
 
 struct PulseOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	const char *name;
 	const char *server;
@@ -323,7 +323,7 @@ pulse_output_setup_context(PulseOutput *po, Error &error)
 	return true;
 }
 
-static struct audio_output *
+static AudioOutput *
 pulse_output_init(const config_param &param, Error &error)
 {
 	PulseOutput *po;
@@ -349,7 +349,7 @@ pulse_output_init(const config_param &param, Error &error)
 }
 
 static void
-pulse_output_finish(struct audio_output *ao)
+pulse_output_finish(AudioOutput *ao)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 
@@ -358,7 +358,7 @@ pulse_output_finish(struct audio_output *ao)
 }
 
 static bool
-pulse_output_enable(struct audio_output *ao, Error &error)
+pulse_output_enable(AudioOutput *ao, Error &error)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 
@@ -404,7 +404,7 @@ pulse_output_enable(struct audio_output *ao, Error &error)
 }
 
 static void
-pulse_output_disable(struct audio_output *ao)
+pulse_output_disable(AudioOutput *ao)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 
@@ -548,7 +548,7 @@ pulse_output_setup_stream(PulseOutput *po, const pa_sample_spec *ss,
 }
 
 static bool
-pulse_output_open(struct audio_output *ao, AudioFormat &audio_format,
+pulse_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		  Error &error)
 {
 	PulseOutput *po = (PulseOutput *)ao;
@@ -616,7 +616,7 @@ pulse_output_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-pulse_output_close(struct audio_output *ao)
+pulse_output_close(AudioOutput *ao)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 	pa_operation *o;
@@ -702,7 +702,7 @@ pulse_output_stream_pause(PulseOutput *po, bool pause,
 }
 
 static unsigned
-pulse_output_delay(struct audio_output *ao)
+pulse_output_delay(AudioOutput *ao)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 	unsigned result = 0;
@@ -720,7 +720,7 @@ pulse_output_delay(struct audio_output *ao)
 }
 
 static size_t
-pulse_output_play(struct audio_output *ao, const void *chunk, size_t size,
+pulse_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		  Error &error)
 {
 	PulseOutput *po = (PulseOutput *)ao;
@@ -785,7 +785,7 @@ pulse_output_play(struct audio_output *ao, const void *chunk, size_t size,
 }
 
 static void
-pulse_output_cancel(struct audio_output *ao)
+pulse_output_cancel(AudioOutput *ao)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 	pa_operation *o;
@@ -818,7 +818,7 @@ pulse_output_cancel(struct audio_output *ao)
 }
 
 static bool
-pulse_output_pause(struct audio_output *ao)
+pulse_output_pause(AudioOutput *ao)
 {
 	PulseOutput *po = (PulseOutput *)ao;
 
diff --git a/src/output/plugins/RecorderOutputPlugin.cxx b/src/output/plugins/RecorderOutputPlugin.cxx
index bcc1fb33b..632f2b718 100644
--- a/src/output/plugins/RecorderOutputPlugin.cxx
+++ b/src/output/plugins/RecorderOutputPlugin.cxx
@@ -35,7 +35,7 @@
 #include <errno.h>
 
 struct RecorderOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	/**
 	 * The configured encoder plugin.
@@ -107,7 +107,7 @@ RecorderOutput::Configure(const config_param &param, Error &error)
 	return true;
 }
 
-static audio_output *
+static AudioOutput *
 recorder_output_init(const config_param &param, Error &error)
 {
 	RecorderOutput *recorder = new RecorderOutput();
@@ -127,7 +127,7 @@ recorder_output_init(const config_param &param, Error &error)
 }
 
 static void
-recorder_output_finish(struct audio_output *ao)
+recorder_output_finish(AudioOutput *ao)
 {
 	RecorderOutput *recorder = (RecorderOutput *)ao;
 
@@ -181,7 +181,7 @@ RecorderOutput::EncoderToFile(Error &error)
 }
 
 static bool
-recorder_output_open(struct audio_output *ao,
+recorder_output_open(AudioOutput *ao,
 		     AudioFormat &audio_format,
 		     Error &error)
 {
@@ -216,7 +216,7 @@ recorder_output_open(struct audio_output *ao,
 }
 
 static void
-recorder_output_close(struct audio_output *ao)
+recorder_output_close(AudioOutput *ao)
 {
 	RecorderOutput *recorder = (RecorderOutput *)ao;
 
@@ -233,7 +233,7 @@ recorder_output_close(struct audio_output *ao)
 }
 
 static size_t
-recorder_output_play(struct audio_output *ao, const void *chunk, size_t size,
+recorder_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		     Error &error)
 {
 	RecorderOutput *recorder = (RecorderOutput *)ao;
diff --git a/src/output/plugins/RoarOutputPlugin.cxx b/src/output/plugins/RoarOutputPlugin.cxx
index d2de95e77..9b7a342e5 100644
--- a/src/output/plugins/RoarOutputPlugin.cxx
+++ b/src/output/plugins/RoarOutputPlugin.cxx
@@ -36,7 +36,7 @@
 #undef new
 
 class RoarOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	std::string host, name;
 
@@ -52,7 +52,7 @@ public:
 	RoarOutput()
 		:err(ROAR_ERROR_NONE) {}
 
-	operator audio_output *() {
+	operator AudioOutput *() {
 		return &base;
 	}
 
@@ -136,7 +136,7 @@ RoarOutput::Configure(const config_param &param)
 		: ROAR_ROLE_MUSIC;
 }
 
-static struct audio_output *
+static AudioOutput *
 roar_init(const config_param &param, Error &error)
 {
 	RoarOutput *self = new RoarOutput();
@@ -151,7 +151,7 @@ roar_init(const config_param &param, Error &error)
 }
 
 static void
-roar_finish(struct audio_output *ao)
+roar_finish(AudioOutput *ao)
 {
 	RoarOutput *self = (RoarOutput *)ao;
 
@@ -227,7 +227,7 @@ RoarOutput::Open(AudioFormat &audio_format, Error &error)
 }
 
 static bool
-roar_open(struct audio_output *ao, AudioFormat &audio_format, Error &error)
+roar_open(AudioOutput *ao, AudioFormat &audio_format, Error &error)
 {
 	RoarOutput *self = (RoarOutput *)ao;
 
@@ -248,7 +248,7 @@ RoarOutput::Close()
 }
 
 static void
-roar_close(struct audio_output *ao)
+roar_close(AudioOutput *ao)
 {
 	RoarOutput *self = (RoarOutput *)ao;
 	self->Close();
@@ -283,7 +283,7 @@ RoarOutput::Cancel()
 }
 
 static void
-roar_cancel(struct audio_output *ao)
+roar_cancel(AudioOutput *ao)
 {
 	RoarOutput *self = (RoarOutput *)ao;
 
@@ -308,7 +308,7 @@ RoarOutput::Play(const void *chunk, size_t size, Error &error)
 }
 
 static size_t
-roar_play(struct audio_output *ao, const void *chunk, size_t size,
+roar_play(AudioOutput *ao, const void *chunk, size_t size,
 	  Error &error)
 {
 	RoarOutput *self = (RoarOutput *)ao;
@@ -403,7 +403,7 @@ RoarOutput::SendTag(const Tag &tag)
 }
 
 static void
-roar_send_tag(struct audio_output *ao, const Tag *meta)
+roar_send_tag(AudioOutput *ao, const Tag *meta)
 {
 	RoarOutput *self = (RoarOutput *)ao;
 	self->SendTag(*meta);
diff --git a/src/output/plugins/ShoutOutputPlugin.cxx b/src/output/plugins/ShoutOutputPlugin.cxx
index 761f701c5..8682226b9 100644
--- a/src/output/plugins/ShoutOutputPlugin.cxx
+++ b/src/output/plugins/ShoutOutputPlugin.cxx
@@ -39,7 +39,7 @@
 static constexpr unsigned DEFAULT_CONN_TIMEOUT = 2;
 
 struct ShoutOutput final {
-	struct audio_output base;
+	AudioOutput base;
 
 	shout_t *shout_conn;
 	shout_metadata_t *shout_meta;
@@ -275,7 +275,7 @@ ShoutOutput::Configure(const config_param &param, Error &error)
 	return true;
 }
 
-static struct audio_output *
+static AudioOutput *
 my_shout_init_driver(const config_param &param, Error &error)
 {
 	ShoutOutput *sd = new ShoutOutput();
@@ -363,7 +363,7 @@ static void close_shout_conn(ShoutOutput * sd)
 }
 
 static void
-my_shout_finish_driver(struct audio_output *ao)
+my_shout_finish_driver(AudioOutput *ao)
 {
 	ShoutOutput *sd = (ShoutOutput *)ao;
 
@@ -379,7 +379,7 @@ my_shout_finish_driver(struct audio_output *ao)
 }
 
 static void
-my_shout_drop_buffered_audio(struct audio_output *ao)
+my_shout_drop_buffered_audio(AudioOutput *ao)
 {
 	gcc_unused
 	ShoutOutput *sd = (ShoutOutput *)ao;
@@ -388,7 +388,7 @@ my_shout_drop_buffered_audio(struct audio_output *ao)
 }
 
 static void
-my_shout_close_device(struct audio_output *ao)
+my_shout_close_device(AudioOutput *ao)
 {
 	ShoutOutput *sd = (ShoutOutput *)ao;
 
@@ -414,7 +414,7 @@ shout_connect(ShoutOutput *sd, Error &error)
 }
 
 static bool
-my_shout_open_device(struct audio_output *ao, AudioFormat &audio_format,
+my_shout_open_device(AudioOutput *ao, AudioFormat &audio_format,
 		     Error &error)
 {
 	ShoutOutput *sd = (ShoutOutput *)ao;
@@ -437,7 +437,7 @@ my_shout_open_device(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static unsigned
-my_shout_delay(struct audio_output *ao)
+my_shout_delay(AudioOutput *ao)
 {
 	ShoutOutput *sd = (ShoutOutput *)ao;
 
@@ -449,7 +449,7 @@ my_shout_delay(struct audio_output *ao)
 }
 
 static size_t
-my_shout_play(struct audio_output *ao, const void *chunk, size_t size,
+my_shout_play(AudioOutput *ao, const void *chunk, size_t size,
 	      Error &error)
 {
 	ShoutOutput *sd = (ShoutOutput *)ao;
@@ -461,7 +461,7 @@ my_shout_play(struct audio_output *ao, const void *chunk, size_t size,
 }
 
 static bool
-my_shout_pause(struct audio_output *ao)
+my_shout_pause(AudioOutput *ao)
 {
 	static char silence[1020];
 
@@ -494,7 +494,7 @@ shout_tag_to_metadata(const Tag *tag, char *dest, size_t size)
 	snprintf(dest, size, "%s - %s", artist, title);
 }
 
-static void my_shout_set_tag(struct audio_output *ao,
+static void my_shout_set_tag(AudioOutput *ao,
 			     const Tag *tag)
 {
 	ShoutOutput *sd = (ShoutOutput *)ao;
diff --git a/src/output/plugins/SolarisOutputPlugin.cxx b/src/output/plugins/SolarisOutputPlugin.cxx
index fafea3e26..70c3b7493 100644
--- a/src/output/plugins/SolarisOutputPlugin.cxx
+++ b/src/output/plugins/SolarisOutputPlugin.cxx
@@ -50,7 +50,7 @@ struct audio_info {
 #endif
 
 struct SolarisOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	/* configuration */
 	const char *device;
@@ -76,7 +76,7 @@ solaris_output_test_default_device(void)
 		access("/dev/audio", W_OK) == 0;
 }
 
-static struct audio_output *
+static AudioOutput *
 solaris_output_init(const config_param &param, Error &error_r)
 {
 	SolarisOutput *so = new SolarisOutput();
@@ -91,7 +91,7 @@ solaris_output_init(const config_param &param, Error &error_r)
 }
 
 static void
-solaris_output_finish(struct audio_output *ao)
+solaris_output_finish(AudioOutput *ao)
 {
 	SolarisOutput *so = (SolarisOutput *)ao;
 
@@ -100,7 +100,7 @@ solaris_output_finish(struct audio_output *ao)
 }
 
 static bool
-solaris_output_open(struct audio_output *ao, AudioFormat &audio_format,
+solaris_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		    Error &error)
 {
 	SolarisOutput *so = (SolarisOutput *)ao;
@@ -151,7 +151,7 @@ solaris_output_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-solaris_output_close(struct audio_output *ao)
+solaris_output_close(AudioOutput *ao)
 {
 	SolarisOutput *so = (SolarisOutput *)ao;
 
@@ -159,7 +159,7 @@ solaris_output_close(struct audio_output *ao)
 }
 
 static size_t
-solaris_output_play(struct audio_output *ao, const void *chunk, size_t size,
+solaris_output_play(AudioOutput *ao, const void *chunk, size_t size,
 		    Error &error)
 {
 	SolarisOutput *so = (SolarisOutput *)ao;
@@ -175,7 +175,7 @@ solaris_output_play(struct audio_output *ao, const void *chunk, size_t size,
 }
 
 static void
-solaris_output_cancel(struct audio_output *ao)
+solaris_output_cancel(AudioOutput *ao)
 {
 	SolarisOutput *so = (SolarisOutput *)ao;
 
diff --git a/src/output/plugins/WinmmOutputPlugin.cxx b/src/output/plugins/WinmmOutputPlugin.cxx
index d1436d673..699993905 100644
--- a/src/output/plugins/WinmmOutputPlugin.cxx
+++ b/src/output/plugins/WinmmOutputPlugin.cxx
@@ -38,7 +38,7 @@ struct WinmmBuffer {
 };
 
 struct WinmmOutput {
-	struct audio_output base;
+	AudioOutput base;
 
 	UINT device_id;
 	HWAVEOUT handle;
@@ -108,7 +108,7 @@ fail:
 	return false;
 }
 
-static struct audio_output *
+static AudioOutput *
 winmm_output_init(const config_param &param, Error &error)
 {
 	WinmmOutput *wo = new WinmmOutput();
@@ -128,7 +128,7 @@ winmm_output_init(const config_param &param, Error &error)
 }
 
 static void
-winmm_output_finish(struct audio_output *ao)
+winmm_output_finish(AudioOutput *ao)
 {
 	WinmmOutput *wo = (WinmmOutput *)ao;
 
@@ -137,7 +137,7 @@ winmm_output_finish(struct audio_output *ao)
 }
 
 static bool
-winmm_output_open(struct audio_output *ao, AudioFormat &audio_format,
+winmm_output_open(AudioOutput *ao, AudioFormat &audio_format,
 		  Error &error)
 {
 	WinmmOutput *wo = (WinmmOutput *)ao;
@@ -194,7 +194,7 @@ winmm_output_open(struct audio_output *ao, AudioFormat &audio_format,
 }
 
 static void
-winmm_output_close(struct audio_output *ao)
+winmm_output_close(AudioOutput *ao)
 {
 	WinmmOutput *wo = (WinmmOutput *)ao;
 
@@ -263,7 +263,7 @@ winmm_drain_buffer(WinmmOutput *wo, WinmmBuffer *buffer,
 }
 
 static size_t
-winmm_output_play(struct audio_output *ao, const void *chunk, size_t size, Error &error)
+winmm_output_play(AudioOutput *ao, const void *chunk, size_t size, Error &error)
 {
 	WinmmOutput *wo = (WinmmOutput *)ao;
 
@@ -318,7 +318,7 @@ winmm_stop(WinmmOutput *wo)
 }
 
 static void
-winmm_output_drain(struct audio_output *ao)
+winmm_output_drain(AudioOutput *ao)
 {
 	WinmmOutput *wo = (WinmmOutput *)ao;
 
@@ -327,7 +327,7 @@ winmm_output_drain(struct audio_output *ao)
 }
 
 static void
-winmm_output_cancel(struct audio_output *ao)
+winmm_output_cancel(AudioOutput *ao)
 {
 	WinmmOutput *wo = (WinmmOutput *)ao;