/**
 * 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 "alMain.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 type)
{ return (type == BackendType::Loopback); }

void LoopbackBackendFactory::probe(DevProbe, std::string*)
{ }

BackendPtr LoopbackBackendFactory::createBackend(ALCdevice *device, BackendType type)
{
    if(type == BackendType::Loopback)
        return BackendPtr{new LoopbackBackend{device}};
    return nullptr;
}

BackendFactory &LoopbackBackendFactory::getFactory()
{
    static LoopbackBackendFactory factory{};
    return factory;
}