alc/backends/loopback.cpp

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 2011 by Chris Robinson
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include "loopback.h"
  24
  25 #include "core/device.h"
  26
  27
  28 namespace {
  29
  30 struct LoopbackBackend final : public BackendBase {
  31     LoopbackBackend(DeviceBase *device) noexcept : BackendBase{device} { }
  32
  33     void open(const char *name) override;
  34     bool reset() override;
  35     void start() override;
  36     void stop() override;
  37
  38     DEF_NEWDEL(LoopbackBackend)
  39 };
  40
  41
  42 void LoopbackBackend::open(const char *name)
  43 {
  44     mDevice->DeviceName = name;
  45 }
  46
  47 bool LoopbackBackend::reset()
  48 {
  49     setDefaultWFXChannelOrder();
  50     return true;
  51 }
  52
  53 void LoopbackBackend::start()
  54 { }
  55
  56 void LoopbackBackend::stop()
  57 { }
  58
  59 } // namespace
  60
  61
  62 bool LoopbackBackendFactory::init()
  63 { return true; }
  64
  65 bool LoopbackBackendFactory::querySupport(BackendType)
  66 { return true; }
  67
  68 std::string LoopbackBackendFactory::probe(BackendType)
  69 { return std::string{}; }
  70
  71 BackendPtr LoopbackBackendFactory::createBackend(DeviceBase *device, BackendType)
  72 { return BackendPtr{new LoopbackBackend{device}}; }
  73
  74 BackendFactory &LoopbackBackendFactory::getFactory()
  75 {
  76     static LoopbackBackendFactory factory{};
  77     return factory;
  78 }