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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1.  Redistributions of source code must retain the above copyright
      8  *     notice, this list of conditions and the following disclaimer.
      9  * 2.  Redistributions in binary form must reproduce the above copyright
     10  *     notice, this list of conditions and the following disclaimer in the
     11  *     documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     23  */
     24 
     25 #include "config.h"
     26 
     27 #include "public/platform/WebMediaStreamTrack.h"
     28 
     29 #include "platform/mediastream/MediaStreamComponent.h"
     30 #include "platform/mediastream/MediaStreamSource.h"
     31 #include "public/platform/WebAudioSourceProvider.h"
     32 #include "public/platform/WebMediaStream.h"
     33 #include "public/platform/WebMediaStreamSource.h"
     34 #include "public/platform/WebString.h"
     35 
     36 namespace blink {
     37 
     38 namespace {
     39 
     40 class ExtraDataContainer : public MediaStreamComponent::ExtraData {
     41 public:
     42     explicit ExtraDataContainer(PassOwnPtr<WebMediaStreamTrack::ExtraData> extraData) : m_extraData(extraData) { }
     43 
     44     WebMediaStreamTrack::ExtraData* extraData() { return m_extraData.get(); }
     45 
     46 private:
     47     OwnPtr<WebMediaStreamTrack::ExtraData> m_extraData;
     48 };
     49 
     50 } // namespace
     51 
     52 WebMediaStreamTrack WebMediaStreamTrack::ExtraData::owner()
     53 {
     54     ASSERT(m_owner);
     55     return WebMediaStreamTrack(m_owner);
     56 }
     57 
     58 void WebMediaStreamTrack::ExtraData::setOwner(MediaStreamComponent* owner)
     59 {
     60     ASSERT(!m_owner);
     61     m_owner = owner;
     62 }
     63 
     64 WebMediaStreamTrack::WebMediaStreamTrack(PassRefPtr<MediaStreamComponent> mediaStreamComponent)
     65     : m_private(mediaStreamComponent)
     66 {
     67 }
     68 
     69 WebMediaStreamTrack::WebMediaStreamTrack(MediaStreamComponent* mediaStreamComponent)
     70     : m_private(mediaStreamComponent)
     71 {
     72 }
     73 
     74 WebMediaStreamTrack& WebMediaStreamTrack::operator=(MediaStreamComponent* mediaStreamComponent)
     75 {
     76     m_private = mediaStreamComponent;
     77     return *this;
     78 }
     79 
     80 void WebMediaStreamTrack::initialize(const WebMediaStreamSource& source)
     81 {
     82     m_private = MediaStreamComponent::create(source);
     83 }
     84 
     85 void WebMediaStreamTrack::initialize(const WebString& id, const WebMediaStreamSource& source)
     86 {
     87     m_private = MediaStreamComponent::create(id, source);
     88 }
     89 
     90 void WebMediaStreamTrack::reset()
     91 {
     92     m_private.reset();
     93 }
     94 
     95 WebMediaStreamTrack::operator PassRefPtr<MediaStreamComponent>() const
     96 {
     97     return m_private.get();
     98 }
     99 
    100 WebMediaStreamTrack::operator MediaStreamComponent*() const
    101 {
    102     return m_private.get();
    103 }
    104 
    105 bool WebMediaStreamTrack::isEnabled() const
    106 {
    107     ASSERT(!m_private.isNull());
    108     return m_private->enabled();
    109 }
    110 
    111 WebString WebMediaStreamTrack::id() const
    112 {
    113     ASSERT(!m_private.isNull());
    114     return m_private->id();
    115 }
    116 
    117 WebMediaStreamSource WebMediaStreamTrack::source() const
    118 {
    119     ASSERT(!m_private.isNull());
    120     return WebMediaStreamSource(m_private->source());
    121 }
    122 
    123 WebMediaStreamTrack::ExtraData* WebMediaStreamTrack::extraData() const
    124 {
    125     MediaStreamComponent::ExtraData* data = m_private->extraData();
    126     if (!data)
    127         return 0;
    128     return static_cast<ExtraDataContainer*>(data)->extraData();
    129 }
    130 
    131 void WebMediaStreamTrack::setExtraData(ExtraData* extraData)
    132 {
    133     ASSERT(!m_private.isNull());
    134 
    135     if (extraData)
    136         extraData->setOwner(m_private.get());
    137 
    138     m_private->setExtraData(adoptPtr(new ExtraDataContainer(adoptPtr(extraData))));
    139 }
    140 
    141 void WebMediaStreamTrack::setSourceProvider(WebAudioSourceProvider* provider)
    142 {
    143 #if ENABLE(WEB_AUDIO)
    144     ASSERT(!m_private.isNull());
    145     m_private->setSourceProvider(provider);
    146 #endif // ENABLE(WEB_AUDIO)
    147 }
    148 
    149 void WebMediaStreamTrack::assign(const WebMediaStreamTrack& other)
    150 {
    151     m_private = other.m_private;
    152 }
    153 
    154 } // namespace blink
    155