1 /* 2 * Copyright (C) 2011 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WebMediaStreamSource_h 32 #define WebMediaStreamSource_h 33 34 #include "WebCommon.h" 35 #include "WebNonCopyable.h" 36 #include "WebPrivatePtr.h" 37 #include "WebVector.h" 38 39 namespace blink { 40 41 class MediaStreamSource; 42 class WebAudioDestinationConsumer; 43 class WebMediaConstraints; 44 class WebString; 45 46 class WebMediaStreamSource { 47 public: 48 class ExtraData { 49 public: ExtraData()50 ExtraData() : m_owner(0) { } ~ExtraData()51 virtual ~ExtraData() { } 52 53 BLINK_PLATFORM_EXPORT WebMediaStreamSource owner(); 54 55 #if INSIDE_BLINK 56 BLINK_PLATFORM_EXPORT void setOwner(MediaStreamSource*); 57 #endif 58 59 private: 60 MediaStreamSource* m_owner; 61 }; 62 63 enum Type { 64 TypeAudio, 65 TypeVideo 66 }; 67 68 enum ReadyState { 69 ReadyStateLive = 0, 70 ReadyStateMuted = 1, 71 ReadyStateEnded = 2 72 }; 73 WebMediaStreamSource()74 WebMediaStreamSource() { } WebMediaStreamSource(const WebMediaStreamSource & other)75 WebMediaStreamSource(const WebMediaStreamSource& other) { assign(other); } ~WebMediaStreamSource()76 ~WebMediaStreamSource() { reset(); } 77 78 WebMediaStreamSource& operator=(const WebMediaStreamSource& other) 79 { 80 assign(other); 81 return *this; 82 } 83 84 BLINK_PLATFORM_EXPORT void assign(const WebMediaStreamSource&); 85 86 BLINK_PLATFORM_EXPORT void initialize(const WebString& id, Type, const WebString& name); 87 BLINK_PLATFORM_EXPORT void reset(); isNull()88 bool isNull() const { return m_private.isNull(); } 89 90 BLINK_PLATFORM_EXPORT WebString id() const; 91 BLINK_PLATFORM_EXPORT Type type() const; 92 BLINK_PLATFORM_EXPORT WebString name() const; 93 94 BLINK_PLATFORM_EXPORT void setReadyState(ReadyState); 95 BLINK_PLATFORM_EXPORT ReadyState readyState() const; 96 97 // Extra data associated with this object. 98 // If non-null, the extra data pointer will be deleted when the object is destroyed. 99 // Setting the extra data pointer will cause any existing non-null 100 // extra data pointer to be deleted. 101 BLINK_PLATFORM_EXPORT ExtraData* extraData() const; 102 BLINK_PLATFORM_EXPORT void setExtraData(ExtraData*); 103 104 BLINK_PLATFORM_EXPORT WebMediaConstraints constraints(); 105 106 // Only used if if this is a WebAudio source. 107 // The WebAudioDestinationConsumer is not owned, and has to be disposed of separately 108 // after calling removeAudioConsumer. 109 BLINK_PLATFORM_EXPORT bool requiresAudioConsumer() const; 110 BLINK_PLATFORM_EXPORT void addAudioConsumer(WebAudioDestinationConsumer*); 111 BLINK_PLATFORM_EXPORT bool removeAudioConsumer(WebAudioDestinationConsumer*); 112 113 #if INSIDE_BLINK 114 BLINK_PLATFORM_EXPORT WebMediaStreamSource(const WTF::PassRefPtr<MediaStreamSource>&); 115 BLINK_PLATFORM_EXPORT WebMediaStreamSource& operator=(MediaStreamSource*); 116 BLINK_PLATFORM_EXPORT operator WTF::PassRefPtr<MediaStreamSource>() const; 117 BLINK_PLATFORM_EXPORT operator MediaStreamSource*() const; 118 #endif 119 120 private: 121 WebPrivatePtr<MediaStreamSource> m_private; 122 }; 123 124 } // namespace blink 125 126 #endif // WebMediaStreamSource_h 127