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#include "config.h"
33
34#include "modules/mediastream/UserMediaRequest.h"
35
36#include "bindings/core/v8/Dictionary.h"
37#include "bindings/core/v8/ExceptionMessages.h"
38#include "bindings/core/v8/ExceptionState.h"
39#include "core/dom/Document.h"
40#include "core/dom/ExceptionCode.h"
41#include "core/dom/SpaceSplitString.h"
42#include "modules/mediastream/MediaConstraintsImpl.h"
43#include "modules/mediastream/MediaStream.h"
44#include "modules/mediastream/UserMediaController.h"
45#include "platform/mediastream/MediaStreamCenter.h"
46#include "platform/mediastream/MediaStreamDescriptor.h"
47
48namespace blink {
49
50static WebMediaConstraints parseOptions(const Dictionary& options, const String& mediaType, ExceptionState& exceptionState)
51{
52    WebMediaConstraints constraints;
53
54    Dictionary constraintsDictionary;
55    bool ok = options.get(mediaType, constraintsDictionary);
56    if (ok && !constraintsDictionary.isUndefinedOrNull())
57        constraints = MediaConstraintsImpl::create(constraintsDictionary, exceptionState);
58    else {
59        bool mediaRequested = false;
60        DictionaryHelper::get(options, mediaType, mediaRequested);
61        if (mediaRequested)
62            constraints = MediaConstraintsImpl::create();
63    }
64
65    return constraints;
66}
67
68UserMediaRequest* UserMediaRequest::create(ExecutionContext* context, UserMediaController* controller, const Dictionary& options, NavigatorUserMediaSuccessCallback* successCallback, NavigatorUserMediaErrorCallback* errorCallback, ExceptionState& exceptionState)
69{
70    WebMediaConstraints audio = parseOptions(options, "audio", exceptionState);
71    if (exceptionState.hadException())
72        return nullptr;
73
74    WebMediaConstraints video = parseOptions(options, "video", exceptionState);
75    if (exceptionState.hadException())
76        return nullptr;
77
78    if (audio.isNull() && video.isNull()) {
79        exceptionState.throwDOMException(SyntaxError, "At least one of audio and video must be requested");
80        return nullptr;
81    }
82
83    return new UserMediaRequest(context, controller, audio, video, successCallback, errorCallback);
84}
85
86UserMediaRequest::UserMediaRequest(ExecutionContext* context, UserMediaController* controller, WebMediaConstraints audio, WebMediaConstraints video, NavigatorUserMediaSuccessCallback* successCallback, NavigatorUserMediaErrorCallback* errorCallback)
87    : ContextLifecycleObserver(context)
88    , m_audio(audio)
89    , m_video(video)
90    , m_controller(controller)
91    , m_successCallback(successCallback)
92    , m_errorCallback(errorCallback)
93{
94}
95
96UserMediaRequest::~UserMediaRequest()
97{
98}
99
100bool UserMediaRequest::audio() const
101{
102    return !m_audio.isNull();
103}
104
105bool UserMediaRequest::video() const
106{
107    return !m_video.isNull();
108}
109
110WebMediaConstraints UserMediaRequest::audioConstraints() const
111{
112    return m_audio;
113}
114
115WebMediaConstraints UserMediaRequest::videoConstraints() const
116{
117    return m_video;
118}
119
120Document* UserMediaRequest::ownerDocument()
121{
122    if (ExecutionContext* context = executionContext()) {
123        return toDocument(context);
124    }
125
126    return 0;
127}
128
129void UserMediaRequest::start()
130{
131    if (m_controller)
132        m_controller->requestUserMedia(this);
133}
134
135void UserMediaRequest::succeed(PassRefPtr<MediaStreamDescriptor> streamDescriptor)
136{
137    if (!executionContext())
138        return;
139
140    RefPtrWillBeRawPtr<MediaStream> stream = MediaStream::create(executionContext(), streamDescriptor);
141
142    MediaStreamTrackVector audioTracks = stream->getAudioTracks();
143    for (MediaStreamTrackVector::iterator iter = audioTracks.begin(); iter != audioTracks.end(); ++iter) {
144        (*iter)->component()->source()->setConstraints(m_audio);
145    }
146
147    MediaStreamTrackVector videoTracks = stream->getVideoTracks();
148    for (MediaStreamTrackVector::iterator iter = videoTracks.begin(); iter != videoTracks.end(); ++iter) {
149        (*iter)->component()->source()->setConstraints(m_video);
150    }
151
152    m_successCallback->handleEvent(stream.get());
153}
154
155void UserMediaRequest::failPermissionDenied(const String& message)
156{
157    if (!executionContext())
158        return;
159    m_errorCallback->handleEvent(NavigatorUserMediaError::create(NavigatorUserMediaError::NamePermissionDenied, message, String()));
160}
161
162void UserMediaRequest::failConstraint(const String& constraintName, const String& message)
163{
164    ASSERT(!constraintName.isEmpty());
165    if (!executionContext())
166        return;
167    m_errorCallback->handleEvent(NavigatorUserMediaError::create(NavigatorUserMediaError::NameConstraintNotSatisfied, message, constraintName));
168}
169
170void UserMediaRequest::failUASpecific(const String& name, const String& message, const String& constraintName)
171{
172    ASSERT(!name.isEmpty());
173    if (!executionContext())
174        return;
175    m_errorCallback->handleEvent(NavigatorUserMediaError::create(name, message, constraintName));
176}
177
178void UserMediaRequest::contextDestroyed()
179{
180    if (m_controller) {
181        m_controller->cancelUserMediaRequest(this);
182        m_controller = 0;
183    }
184
185    ContextLifecycleObserver::contextDestroyed();
186}
187
188void UserMediaRequest::trace(Visitor* visitor)
189{
190    visitor->trace(m_successCallback);
191    visitor->trace(m_errorCallback);
192}
193
194} // namespace blink
195