1 files changed, 80 insertions, 0 deletions
diff --git a/alc/backends/loopback.cpp b/alc/backends/loopback.cpp
new file mode 100644
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--- /dev/null
+++ b/alc/backends/loopback.cpp
@@ -0,0 +1,80 @@
+/**
+ * OpenAL cross platform audio library
+ * Copyright (C) 2011 by Chris Robinson
+ * This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ *  Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the
+ *  Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * Or go to http://www.gnu.org/copyleft/lgpl.html
+ */
+
+#include "config.h"
+
+#include "backends/loopback.h"
+
+#include "alcmain.h"
+#include "alu.h"
+
+
+namespace {
+
+struct LoopbackBackend final : public BackendBase {
+    LoopbackBackend(ALCdevice *device) noexcept : BackendBase{device} { }
+
+    ALCenum open(const ALCchar *name) override;
+    ALCboolean reset() override;
+    ALCboolean start() override;
+    void stop() override;
+
+    DEF_NEWDEL(LoopbackBackend)
+};
+
+
+ALCenum LoopbackBackend::open(const ALCchar *name)
+{
+    mDevice->DeviceName = name;
+    return ALC_NO_ERROR;
+}
+
+ALCboolean LoopbackBackend::reset()
+{
+    SetDefaultWFXChannelOrder(mDevice);
+    return ALC_TRUE;
+}
+
+ALCboolean LoopbackBackend::start()
+{ return ALC_TRUE; }
+
+void LoopbackBackend::stop()
+{ }
+
+} // namespace
+
+
+bool LoopbackBackendFactory::init()
+{ return true; }
+
+bool LoopbackBackendFactory::querySupport(BackendType)
+{ return true; }
+
+void LoopbackBackendFactory::probe(DevProbe, std::string*)
+{ }
+
+BackendPtr LoopbackBackendFactory::createBackend(ALCdevice *device, BackendType)
+{ return BackendPtr{new LoopbackBackend{device}}; }
+
+BackendFactory &LoopbackBackendFactory::getFactory()
+{
+    static LoopbackBackendFactory factory{};
+    return factory;
+}