third_party/WebKit/Source/platform/mediastream/MediaStreamDescriptor.h

   1 /*
   2  * Copyright (C) 2011 Ericsson AB. All rights reserved.
   3  * Copyright (C) 2012 Google Inc. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer
  13  *    in the documentation and/or other materials provided with the
  14  *    distribution.
  15  * 3. Neither the name of Ericsson nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this
  17  *    software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef MediaStreamDescriptor_h
  33 #define MediaStreamDescriptor_h
  34
  35 #include "platform/mediastream/MediaStreamComponent.h"
  36 #include "platform/mediastream/MediaStreamSource.h"
  37 #include "wtf/PassOwnPtr.h"
  38 #include "wtf/RefCounted.h"
  39 #include "wtf/Vector.h"
  40
  41 namespace blink {
  42
  43 class PLATFORM_EXPORT MediaStreamDescriptorClient {
  44 public:
  45     virtual ~MediaStreamDescriptorClient() { }
  46
  47     virtual void streamEnded() = 0;
  48     virtual void addRemoteTrack(MediaStreamComponent*) = 0;
  49     virtual void removeRemoteTrack(MediaStreamComponent*) = 0;
  50 };
  51
  52 class PLATFORM_EXPORT MediaStreamDescriptor final : public RefCounted<MediaStreamDescriptor> {
  53 public:
  54     class ExtraData {
  55     public:
  56         virtual ~ExtraData() { }
  57     };
  58
  59     // Only used for AudioDestinationNode.
  60     static PassRefPtr<MediaStreamDescriptor> create(const MediaStreamSourceVector& audioSources, const MediaStreamSourceVector& videoSources);
  61
  62     static PassRefPtr<MediaStreamDescriptor> create(const MediaStreamComponentVector& audioComponents, const MediaStreamComponentVector& videoComponents);
  63
  64     static PassRefPtr<MediaStreamDescriptor> create(const String& id, const MediaStreamComponentVector& audioComponents, const MediaStreamComponentVector& videoComponents);
  65
  66     MediaStreamDescriptorClient* client() const { return m_client; }
  67     void setClient(MediaStreamDescriptorClient* client) { m_client = client; }
  68
  69     String id() const { return m_id; }
  70
  71     unsigned numberOfAudioComponents() const { return m_audioComponents.size(); }
  72     MediaStreamComponent* audioComponent(unsigned index) const { return m_audioComponents[index].get(); }
  73
  74     unsigned numberOfVideoComponents() const { return m_videoComponents.size(); }
  75     MediaStreamComponent* videoComponent(unsigned index) const { return m_videoComponents[index].get(); }
  76
  77     void addComponent(PassRefPtr<MediaStreamComponent>);
  78     void removeComponent(PassRefPtr<MediaStreamComponent>);
  79
  80     void addRemoteTrack(MediaStreamComponent*);
  81     void removeRemoteTrack(MediaStreamComponent*);
  82
  83     bool active() const { return m_active; }
  84     void setActive(bool active) { m_active = active; }
  85
  86     bool ended() const { return m_ended; }
  87     void setEnded() { m_ended = true; }
  88
  89     ExtraData* extraData() const { return m_extraData.get(); }
  90     void setExtraData(PassOwnPtr<ExtraData> extraData) { m_extraData = extraData; }
  91
  92 private:
  93     MediaStreamDescriptor(const String& id, const MediaStreamSourceVector& audioSources, const MediaStreamSourceVector& videoSources);
  94     MediaStreamDescriptor(const String& id, const MediaStreamComponentVector& audioComponents, const MediaStreamComponentVector& videoComponents);
  95
  96     MediaStreamDescriptorClient* m_client;
  97     String m_id;
  98     Vector<RefPtr<MediaStreamComponent>> m_audioComponents;
  99     Vector<RefPtr<MediaStreamComponent>> m_videoComponents;
 100     bool m_active;
 101     bool m_ended;
 102
 103     OwnPtr<ExtraData> m_extraData;
 104 };
 105
 106 typedef Vector<RefPtr<MediaStreamDescriptor>> MediaStreamDescriptorVector;
 107
 108 } // namespace blink
 109
 110 #endif // MediaStreamDescriptor_h