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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_DATA_SOURCE_H_ | 5 #ifndef MEDIA_BLINK_MULTIBUFFER_DATA_SOURCE_H_ |
6 #define MEDIA_BLINK_MULTIBUFFER_DATA_SOURCE_H_ | 6 #define MEDIA_BLINK_MULTIBUFFER_DATA_SOURCE_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
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46 // http://www.w3.org/TR/html5/video.html#attr-media-preload | 46 // http://www.w3.org/TR/html5/video.html#attr-media-preload |
47 // | 47 // |
48 // Enum values must match the values in blink::WebMediaPlayer::Preload and | 48 // Enum values must match the values in blink::WebMediaPlayer::Preload and |
49 // there will be assertions at compile time if they do not match. | 49 // there will be assertions at compile time if they do not match. |
50 enum Preload { | 50 enum Preload { |
51 NONE, | 51 NONE, |
52 METADATA, | 52 METADATA, |
53 AUTO, | 53 AUTO, |
54 }; | 54 }; |
55 | 55 |
56 // Enum values must match the values in | |
57 // blink::WebMediaPlayer::BufferingStrategy and there will be assertions at | |
58 // compile time if they do not match. | |
59 enum BufferingStrategy { | |
60 BUFFERING_STRATEGY_NORMAL, | |
61 BUFFERING_STRATEGY_AGGRESSIVE, | |
62 }; | |
63 | |
64 // |url| and |cors_mode| are passed to the object. Buffered byte range changes | 56 // |url| and |cors_mode| are passed to the object. Buffered byte range changes |
65 // will be reported to |host|. |downloading_cb| will be called whenever the | 57 // will be reported to |host|. |downloading_cb| will be called whenever the |
66 // downloading/paused state of the source changes. | 58 // downloading/paused state of the source changes. |
67 MultibufferDataSource( | 59 MultibufferDataSource( |
68 const GURL& url, | 60 const GURL& url, |
69 UrlData::CORSMode cors_mode, | 61 UrlData::CORSMode cors_mode, |
70 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | 62 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, |
71 linked_ptr<UrlIndex> url_index, | 63 linked_ptr<UrlIndex> url_index, |
72 blink::WebFrame* frame, | 64 blink::WebFrame* frame, |
73 MediaLog* media_log, | 65 MediaLog* media_log, |
74 BufferedDataSourceHost* host, | 66 BufferedDataSourceHost* host, |
75 const DownloadingCB& downloading_cb); | 67 const DownloadingCB& downloading_cb); |
76 ~MultibufferDataSource() override; | 68 ~MultibufferDataSource() override; |
77 | 69 |
78 // Executes |init_cb| with the result of initialization when it has completed. | 70 // Executes |init_cb| with the result of initialization when it has completed. |
79 // | 71 // |
80 // Method called on the render thread. | 72 // Method called on the render thread. |
81 typedef base::Callback<void(bool)> InitializeCB; | 73 typedef base::Callback<void(bool)> InitializeCB; |
82 void Initialize(const InitializeCB& init_cb); | 74 void Initialize(const InitializeCB& init_cb); |
83 | 75 |
84 // Adjusts the buffering algorithm based on the given preload value. | 76 // Adjusts the buffering algorithm based on the given preload value. |
85 void SetPreload(Preload preload); | 77 void SetPreload(Preload preload); |
86 | 78 |
87 // Adjusts the buffering algorithm based on the given buffering strategy | |
88 // value. | |
89 void SetBufferingStrategy(BufferingStrategy buffering_strategy); | |
90 | |
91 // Returns true if the media resource has a single origin, false otherwise. | 79 // Returns true if the media resource has a single origin, false otherwise. |
92 // Only valid to call after Initialize() has completed. | 80 // Only valid to call after Initialize() has completed. |
93 // | 81 // |
94 // Method called on the render thread. | 82 // Method called on the render thread. |
95 bool HasSingleOrigin(); | 83 bool HasSingleOrigin(); |
96 | 84 |
97 // Returns true if the media resource passed a CORS access control check. | 85 // Returns true if the media resource passed a CORS access control check. |
98 bool DidPassCORSAccessCheck() const; | 86 bool DidPassCORSAccessCheck() const; |
99 | 87 |
100 // Notifies changes in playback state for controlling media buffering | 88 // Notifies changes in playback state for controlling media buffering |
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219 // Protects |stop_signal_received_|, |read_op_| and |total_bytes_|. | 207 // Protects |stop_signal_received_|, |read_op_| and |total_bytes_|. |
220 base::Lock lock_; | 208 base::Lock lock_; |
221 | 209 |
222 // Whether we've been told to stop via Abort() or Stop(). | 210 // Whether we've been told to stop via Abort() or Stop(). |
223 bool stop_signal_received_; | 211 bool stop_signal_received_; |
224 | 212 |
225 // This variable is true when the user has requested the video to play at | 213 // This variable is true when the user has requested the video to play at |
226 // least once. | 214 // least once. |
227 bool media_has_played_; | 215 bool media_has_played_; |
228 | 216 |
229 // Buffering strategy set by SetBufferingStrategy. | |
230 BufferingStrategy buffering_strategy_; | |
231 | |
232 // As we follow redirects, we set this variable to false if redirects | 217 // As we follow redirects, we set this variable to false if redirects |
233 // go between different origins. | 218 // go between different origins. |
234 bool single_origin_; | 219 bool single_origin_; |
235 | 220 |
236 // Close the connection when we have enough data. | 221 // Close the connection when we have enough data. |
237 bool cancel_on_defer_; | 222 bool cancel_on_defer_; |
238 | 223 |
239 // This variable holds the value of the preload attribute for the video | 224 // This variable holds the value of the preload attribute for the video |
240 // element. | 225 // element. |
241 Preload preload_; | 226 Preload preload_; |
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266 // reaching into this class from multiple threads to attain a WeakPtr. | 251 // reaching into this class from multiple threads to attain a WeakPtr. |
267 base::WeakPtr<MultibufferDataSource> weak_ptr_; | 252 base::WeakPtr<MultibufferDataSource> weak_ptr_; |
268 base::WeakPtrFactory<MultibufferDataSource> weak_factory_; | 253 base::WeakPtrFactory<MultibufferDataSource> weak_factory_; |
269 | 254 |
270 DISALLOW_COPY_AND_ASSIGN(MultibufferDataSource); | 255 DISALLOW_COPY_AND_ASSIGN(MultibufferDataSource); |
271 }; | 256 }; |
272 | 257 |
273 } // namespace media | 258 } // namespace media |
274 | 259 |
275 #endif // MEDIA_BLINK_MULTIBUFFER_DATA_SOURCE_H_ | 260 #endif // MEDIA_BLINK_MULTIBUFFER_DATA_SOURCE_H_ |
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