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Side by Side Diff: media/blink/multibuffer_reader.h

Issue 1399603003: Tie multibuffers to URLs (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@media_cache
Patch Set: added MEDIA_BLINK_EXPORT Created 5 years, 2 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef MEDIA_BLINK_MULTIBUFFER_READER_H_ 5 #ifndef MEDIA_BLINK_MULTIBUFFER_READER_H_
6 #define MEDIA_BLINK_MULTIBUFFER_READER_H_ 6 #define MEDIA_BLINK_MULTIBUFFER_READER_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 9
10 #include <limits> 10 #include <limits>
11 #include <map> 11 #include <map>
12 #include <set> 12 #include <set>
13 13
14 #include "base/memory/linked_ptr.h"
14 #include "media/blink/multibuffer.h" 15 #include "media/blink/multibuffer.h"
15 16
16 namespace media { 17 namespace media {
17 18
18 // Wrapper for MultiBuffer that offers a simple byte-reading 19 // Wrapper for MultiBuffer that offers a simple byte-reading
19 // interface with prefetch. 20 // interface with prefetch.
20 class MEDIA_EXPORT MultiBufferReader 21 class MEDIA_BLINK_EXPORT MultiBufferReader
21 : NON_EXPORTED_BASE(public MultiBuffer::Reader) { 22 : NON_EXPORTED_BASE(public MultiBuffer::Reader) {
22 public: 23 public:
23 // Note that |progress_callback| is guaranteed to be called if 24 // Note that |progress_callback| is guaranteed to be called if
24 // a redirect happens and the url_data is updated. Otherwise 25 // a redirect happens and the url_data is updated. Otherwise
25 // origin checks will become insecure. 26 // origin checks will become insecure.
26 // Users probably want to call SetMaxBuffer & SetPreload after 27 // Users probably want to call SetMaxBuffer & SetPreload after
27 // creating the a MultiBufferReader. 28 // creating the a MultiBufferReader.
28 // The progress callback will be called when the "available range" 29 // The progress callback will be called when the "available range"
29 // changes. (The number of bytes available for reading before and 30 // changes. (The number of bytes available for reading before and
30 // after the current position.) The arguments for the progress 31 // after the current position.) The arguments for the progress
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144 // Progress callback. 145 // Progress callback.
145 base::Callback<void(int64_t, int64_t)> progress_callback_; 146 base::Callback<void(int64_t, int64_t)> progress_callback_;
146 147
147 // Hack to let us detect if we've been deleted when calling a callback. 148 // Hack to let us detect if we've been deleted when calling a callback.
148 bool* clear_on_delete_; 149 bool* clear_on_delete_;
149 }; 150 };
150 151
151 } // namespace media 152 } // namespace media
152 153
153 #endif // MEDIA_BLINK_MULTIBUFFER_READER_H_ 154 #endif // MEDIA_BLINK_MULTIBUFFER_READER_H_
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