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Side by Side Diff: content/renderer/media/audio_renderer_impl.h

Issue 8909006: Fix start/stop of html5 audio stream and race condition when pausing. (Closed) Base URL: http://src.chromium.org/svn/trunk/src/
Patch Set: '' Created 9 years ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 // Audio rendering unit utilizing AudioDevice. 5 // Audio rendering unit utilizing AudioDevice.
6 // 6 //
7 // This class lives inside three threads during it's lifetime, namely: 7 // This class lives inside three threads during it's lifetime, namely:
8 // 1. Render thread. 8 // 1. Render thread.
9 // This object is created on the render thread. 9 // This object is created on the render thread.
10 // 2. Pipeline thread 10 // 2. Pipeline thread
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68 // Convert number of bytes to duration of time using information about the 68 // Convert number of bytes to duration of time using information about the
69 // number of channels, sample rate and sample bits. 69 // number of channels, sample rate and sample bits.
70 base::TimeDelta ConvertToDuration(int bytes); 70 base::TimeDelta ConvertToDuration(int bytes);
71 71
72 // Methods called on pipeline thread ---------------------------------------- 72 // Methods called on pipeline thread ----------------------------------------
73 void DoPlay(); 73 void DoPlay();
74 void DoPause(); 74 void DoPause();
75 void DoSeek(); 75 void DoSeek();
76 76
77 // AudioDevice::RenderCallback implementation. 77 // AudioDevice::RenderCallback implementation.
78 virtual void Render(const std::vector<float*>& audio_data, 78 virtual size_t Render(const std::vector<float*>& audio_data,
79 size_t number_of_frames, 79 size_t number_of_frames,
80 size_t audio_delay_milliseconds) OVERRIDE; 80 size_t audio_delay_milliseconds) OVERRIDE;
81 81
82 // Accessors used by tests. 82 // Accessors used by tests.
83 base::Time earliest_end_time() const { 83 base::Time earliest_end_time() const {
84 return earliest_end_time_; 84 return earliest_end_time_;
85 } 85 }
86 86
87 void set_earliest_end_time(const base::Time& earliest_end_time) { 87 void set_earliest_end_time(const base::Time& earliest_end_time) {
88 earliest_end_time_ = earliest_end_time; 88 earliest_end_time_ = earliest_end_time;
89 } 89 }
90 90
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121 // know when that particular data would start playing, but it is much better 121 // know when that particular data would start playing, but it is much better
122 // than nothing. 122 // than nothing.
123 base::Time earliest_end_time_; 123 base::Time earliest_end_time_;
124 124
125 AudioParameters audio_parameters_; 125 AudioParameters audio_parameters_;
126 126
127 DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl); 127 DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl);
128 }; 128 };
129 129
130 #endif // CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_ 130 #endif // CONTENT_RENDERER_MEDIA_AUDIO_RENDERER_IMPL_H_
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