2 * Copyright (C) 2013 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
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
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.
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.
34 #include "bindings/core/v8/ScriptWrappable.h"
35 #include "core/dom/ActiveDOMObject.h"
36 #include "platform/heap/Handle.h"
37 #include "platform/weborigin/KURL.h"
38 #include "wtf/PassRefPtr.h"
39 #include "wtf/RefCounted.h"
40 #include "wtf/text/WTFString.h"
44 class ExecutionContext;
46 class Stream FINAL : public RefCountedWillBeRefCountedGarbageCollected<Stream>, public ScriptWrappable, public ActiveDOMObject {
48 static PassRefPtrWillBeRawPtr<Stream> create(ExecutionContext* context, const String& mediaType)
50 RefPtrWillBeRawPtr<Stream> stream = adoptRefWillBeRefCountedGarbageCollected(new Stream(context, mediaType));
51 stream->suspendIfNeeded();
52 return stream.release();
57 // Returns the internal URL referring to this stream.
58 const KURL& url() const { return m_internalURL; }
59 // Returns the media type of this stream.
60 const String& type() const { return m_mediaType; }
62 // Appends data to this stream.
63 void addData(const char* data, size_t len);
64 // Mark this stream finalized so that a reader of this stream is notified
67 // Mark this stream finalized due to an error so that a reader of this
68 // stream is notified of EOF due to the error.
71 // Allow an external reader class to mark this object neutered so that they
72 // won't load the corresponding stream again. All stream objects are
74 void neuter() { m_isNeutered = true; }
75 bool isNeutered() const { return m_isNeutered; }
77 // Implementation of ActiveDOMObject.
79 // FIXME: Implement suspend() and resume() when necessary.
80 virtual void suspend() OVERRIDE;
81 virtual void resume() OVERRIDE;
82 virtual void stop() OVERRIDE;
84 void trace(Visitor*) { }
87 Stream(ExecutionContext*, const String& mediaType);
89 // This is an internal URL referring to the blob data associated with this object. It serves
90 // as an identifier for this blob. The internal URL is never used to source the blob's content
91 // into an HTML or for FileRead'ing, public blob URLs must be used for those purposes.