1//
2// libjingle
3// Copyright 2004 Google Inc.
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are met:
7//
8//  1. Redistributions of source code must retain the above copyright notice,
9//     this list of conditions and the following disclaimer.
10//  2. Redistributions in binary form must reproduce the above copyright notice,
11//     this list of conditions and the following disclaimer in the documentation
12//     and/or other materials provided with the distribution.
13//  3. The name of the author may not be used to endorse or promote products
14//     derived from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26//
27
28#include "talk/media/base/mediaengine.h"
29
30#if !defined(DISABLE_MEDIA_ENGINE_FACTORY)
31
32#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
33#include "talk/media/webrtc/webrtcmediaengine.h"
34#endif  // HAVE_WEBRTC_VOICE && HAVE_WEBRTC_VIDEO
35
36#ifdef HAVE_CONFIG_H
37#include "config.h"
38#endif  // HAVE_CONFIG
39
40namespace cricket {
41
42MediaEngineFactory::MediaEngineCreateFunction
43    MediaEngineFactory::create_function_ = NULL;
44
45MediaEngineFactory::MediaEngineCreateFunction
46    MediaEngineFactory::SetCreateFunction(MediaEngineCreateFunction function) {
47  MediaEngineCreateFunction old_function = create_function_;
48  create_function_ = function;
49  return old_function;
50}
51
52// TODO(pthatcher): Remove this method and require all the users of
53// media engines to choose one explictly, or at least remove the
54// default behavior and require calling SetCreateFunction explictly.
55MediaEngineInterface* MediaEngineFactory::Create() {
56  if (create_function_) {
57    return create_function_();
58  }
59#if defined(HAVE_WEBRTC_VOICE) && defined(HAVE_WEBRTC_VIDEO)
60  return WebRtcMediaEngineFactory::Create();
61#else
62  return new NullMediaEngine();
63#endif  // HAVE_WEBRTC_VIDEO && HAVE_WEBRTC_VOICE
64}
65
66};  // namespace cricket
67
68#endif  // DISABLE_MEDIA_ENGINE_FACTORY
69