1 files changed, 93 insertions, 0 deletions
diff --git a/src/output/Wrapper.hxx b/src/output/Wrapper.hxx
new file mode 100644
index 000000000..186544cce
--- /dev/null
+++ b/src/output/Wrapper.hxx
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2003-2014 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.
+ */
+
+#ifndef MPD_OUTPUT_WRAPPER_HXX
+#define MPD_OUTPUT_WRAPPER_HXX
+
+#include "util/Cast.hxx"
+
+template<class T>
+struct AudioOutputWrapper {
+	static T &Cast(AudioOutput &ao) {
+		return ContainerCast(ao, &T::base);
+	}
+
+	static AudioOutput *Init(const config_param &param, Error &error) {
+		T *t = T::Create(param, error);
+		return t != nullptr
+			? &t->base
+			: nullptr;
+	}
+
+	static void Finish(AudioOutput *ao) {
+		T *t = &Cast(*ao);
+		delete t;
+	}
+
+	static bool Enable(AudioOutput *ao, Error &error) {
+		T &t = Cast(*ao);
+		return t.Enable(error);
+	}
+
+	static void Disable(AudioOutput *ao) {
+		T &t = Cast(*ao);
+		t.Disable();
+	}
+
+	static bool Open(AudioOutput *ao, AudioFormat &audio_format,
+			 Error &error) {
+		T &t = Cast(*ao);
+		return t.Open(audio_format, error);
+	}
+
+	static void Close(AudioOutput *ao) {
+		T &t = Cast(*ao);
+		t.Close();
+	}
+
+	gcc_pure
+	static unsigned Delay(AudioOutput *ao) {
+		T &t = Cast(*ao);
+		return t.Delay();
+	}
+
+	static size_t Play(AudioOutput *ao, const void *chunk, size_t size,
+			   Error &error) {
+		T &t = Cast(*ao);
+		return t.Play(chunk, size, error);
+	}
+
+	static void Drain(AudioOutput *ao) {
+		T &t = Cast(*ao);
+		t.Drain();
+	}
+
+	static void Cancel(AudioOutput *ao) {
+		T &t = Cast(*ao);
+		t.Cancel();
+	}
+
+	gcc_pure
+	static bool Pause(AudioOutput *ao) {
+		T &t = Cast(*ao);
+		return t.Pause();
+	}
+};
+
+#endif