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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_FILTERS_BLOCKING_URL_PROTOCOL_H_ | 5 #ifndef MEDIA_FILTERS_BLOCKING_URL_PROTOCOL_H_ |
6 #define MEDIA_FILTERS_BLOCKING_URL_PROTOCOL_H_ | 6 #define MEDIA_FILTERS_BLOCKING_URL_PROTOCOL_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/callback.h" | 9 #include "base/callback.h" |
10 #include "base/synchronization/waitable_event.h" | 10 #include "base/synchronization/waitable_event.h" |
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24 // TODO(scherkus): After all blocking operations are isolated on a separate | 24 // TODO(scherkus): After all blocking operations are isolated on a separate |
25 // thread we should be able to eliminate |error_cb|. | 25 // thread we should be able to eliminate |error_cb|. |
26 BlockingUrlProtocol(DataSource* data_source, const base::Closure& error_cb); | 26 BlockingUrlProtocol(DataSource* data_source, const base::Closure& error_cb); |
27 virtual ~BlockingUrlProtocol(); | 27 virtual ~BlockingUrlProtocol(); |
28 | 28 |
29 // Aborts any pending reads by returning a read error. After this method | 29 // Aborts any pending reads by returning a read error. After this method |
30 // returns all subsequent calls to Read() will immediately fail. | 30 // returns all subsequent calls to Read() will immediately fail. |
31 void Abort(); | 31 void Abort(); |
32 | 32 |
33 // FFmpegURLProtocol implementation. | 33 // FFmpegURLProtocol implementation. |
34 virtual int Read(int size, uint8* data) OVERRIDE; | 34 virtual int Read(int size, uint8* data) override; |
35 virtual bool GetPosition(int64* position_out) OVERRIDE; | 35 virtual bool GetPosition(int64* position_out) override; |
36 virtual bool SetPosition(int64 position) OVERRIDE; | 36 virtual bool SetPosition(int64 position) override; |
37 virtual bool GetSize(int64* size_out) OVERRIDE; | 37 virtual bool GetSize(int64* size_out) override; |
38 virtual bool IsStreaming() OVERRIDE; | 38 virtual bool IsStreaming() override; |
39 | 39 |
40 private: | 40 private: |
41 // Sets |last_read_bytes_| and signals the blocked thread that the read | 41 // Sets |last_read_bytes_| and signals the blocked thread that the read |
42 // has completed. | 42 // has completed. |
43 void SignalReadCompleted(int size); | 43 void SignalReadCompleted(int size); |
44 | 44 |
45 DataSource* data_source_; | 45 DataSource* data_source_; |
46 base::Closure error_cb_; | 46 base::Closure error_cb_; |
47 | 47 |
48 // Used to unblock the thread during shutdown and when reads complete. | 48 // Used to unblock the thread during shutdown and when reads complete. |
49 base::WaitableEvent aborted_; | 49 base::WaitableEvent aborted_; |
50 base::WaitableEvent read_complete_; | 50 base::WaitableEvent read_complete_; |
51 | 51 |
52 // Cached number of bytes last read from the data source. | 52 // Cached number of bytes last read from the data source. |
53 int last_read_bytes_; | 53 int last_read_bytes_; |
54 | 54 |
55 // Cached position within the data source. | 55 // Cached position within the data source. |
56 int64 read_position_; | 56 int64 read_position_; |
57 | 57 |
58 DISALLOW_IMPLICIT_CONSTRUCTORS(BlockingUrlProtocol); | 58 DISALLOW_IMPLICIT_CONSTRUCTORS(BlockingUrlProtocol); |
59 }; | 59 }; |
60 | 60 |
61 } // namespace media | 61 } // namespace media |
62 | 62 |
63 #endif // MEDIA_FILTERS_BLOCKING_URL_PROTOCOL_H_ | 63 #endif // MEDIA_FILTERS_BLOCKING_URL_PROTOCOL_H_ |
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