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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 #include "media/audio/audio_output_controller.h" | 5 #include "media/audio/audio_output_controller.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/debug/trace_event.h" | 8 #include "base/debug/trace_event.h" |
9 #include "base/message_loop.h" | 9 #include "base/message_loop.h" |
10 #include "base/synchronization/waitable_event.h" | 10 #include "base/synchronization/waitable_event.h" |
11 #include "base/threading/platform_thread.h" | 11 #include "base/threading/platform_thread.h" |
12 #include "base/threading/thread_restrictions.h" | 12 #include "base/threading/thread_restrictions.h" |
13 #include "base/time.h" | 13 #include "base/time.h" |
14 #include "media/audio/shared_memory_util.h" | |
15 | 14 |
16 using base::Time; | 15 using base::Time; |
17 using base::TimeDelta; | 16 using base::TimeDelta; |
18 using base::WaitableEvent; | 17 using base::WaitableEvent; |
19 | 18 |
20 namespace media { | 19 namespace media { |
21 | 20 |
| 21 // Signal a pause in low-latency mode. |
| 22 const int AudioOutputController::kPauseMark = -1; |
| 23 |
22 // Polling-related constants. | 24 // Polling-related constants. |
23 const int AudioOutputController::kPollNumAttempts = 3; | 25 const int AudioOutputController::kPollNumAttempts = 3; |
24 const int AudioOutputController::kPollPauseInMilliseconds = 3; | 26 const int AudioOutputController::kPollPauseInMilliseconds = 3; |
25 | 27 |
26 AudioOutputController::AudioOutputController(EventHandler* handler, | 28 AudioOutputController::AudioOutputController(EventHandler* handler, |
27 SyncReader* sync_reader) | 29 SyncReader* sync_reader) |
28 : handler_(handler), | 30 : handler_(handler), |
29 stream_(NULL), | 31 stream_(NULL), |
30 volume_(1.0), | 32 volume_(1.0), |
31 state_(kEmpty), | 33 state_(kEmpty), |
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330 stream_ = NULL; | 332 stream_ = NULL; |
331 weak_this_.InvalidateWeakPtrs(); | 333 weak_this_.InvalidateWeakPtrs(); |
332 } | 334 } |
333 | 335 |
334 // Should be last in the method, do not touch "this" from here on. | 336 // Should be last in the method, do not touch "this" from here on. |
335 if (done != NULL) | 337 if (done != NULL) |
336 done->Signal(); | 338 done->Signal(); |
337 } | 339 } |
338 | 340 |
339 } // namespace media | 341 } // namespace media |
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