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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_WEBAUDIOSOURCEPROVIDER_IMPL_H_ | 5 #ifndef MEDIA_BLINK_WEBAUDIOSOURCEPROVIDER_IMPL_H_ |
6 #define MEDIA_BLINK_WEBAUDIOSOURCEPROVIDER_IMPL_H_ | 6 #define MEDIA_BLINK_WEBAUDIOSOURCEPROVIDER_IMPL_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
11 #include "base/memory/weak_ptr.h" | 11 #include "base/memory/weak_ptr.h" |
12 #include "base/synchronization/lock.h" | 12 #include "base/synchronization/lock.h" |
13 #include "media/base/audio_renderer_sink.h" | 13 #include "media/base/audio_renderer_sink.h" |
14 #include "media/base/media_export.h" | 14 #include "media/blink/media_blink_export.h" |
15 #include "third_party/WebKit/public/platform/WebAudioSourceProvider.h" | 15 #include "third_party/WebKit/public/platform/WebAudioSourceProvider.h" |
16 #include "third_party/WebKit/public/platform/WebVector.h" | 16 #include "third_party/WebKit/public/platform/WebVector.h" |
17 | 17 |
18 namespace blink { | 18 namespace blink { |
19 class WebAudioSourceProviderClient; | 19 class WebAudioSourceProviderClient; |
20 } | 20 } |
21 | 21 |
22 namespace media { | 22 namespace media { |
23 | 23 |
24 // WebAudioSourceProviderImpl provides a bridge between classes: | 24 // WebAudioSourceProviderImpl provides a bridge between classes: |
25 // blink::WebAudioSourceProvider <---> AudioRendererSink | 25 // blink::WebAudioSourceProvider <---> AudioRendererSink |
26 // | 26 // |
27 // WebAudioSourceProviderImpl wraps an existing audio sink that is used unless | 27 // WebAudioSourceProviderImpl wraps an existing audio sink that is used unless |
28 // WebKit has set a client via setClient(). While a client is set WebKit will | 28 // WebKit has set a client via setClient(). While a client is set WebKit will |
29 // periodically call provideInput() to render a certain number of audio | 29 // periodically call provideInput() to render a certain number of audio |
30 // sample-frames using the sink's RenderCallback to get the data. | 30 // sample-frames using the sink's RenderCallback to get the data. |
31 // | 31 // |
32 // All calls are protected by a lock. | 32 // All calls are protected by a lock. |
33 class MEDIA_EXPORT WebAudioSourceProviderImpl | 33 class MEDIA_BLINK_EXPORT WebAudioSourceProviderImpl |
34 : NON_EXPORTED_BASE(public blink::WebAudioSourceProvider), | 34 : NON_EXPORTED_BASE(public blink::WebAudioSourceProvider), |
35 NON_EXPORTED_BASE(public AudioRendererSink) { | 35 NON_EXPORTED_BASE(public AudioRendererSink) { |
36 public: | 36 public: |
37 explicit WebAudioSourceProviderImpl( | 37 explicit WebAudioSourceProviderImpl( |
38 const scoped_refptr<AudioRendererSink>& sink); | 38 const scoped_refptr<AudioRendererSink>& sink); |
39 | 39 |
40 // blink::WebAudioSourceProvider implementation. | 40 // blink::WebAudioSourceProvider implementation. |
41 void setClient(blink::WebAudioSourceProviderClient* client) override; | 41 void setClient(blink::WebAudioSourceProviderClient* client) override; |
42 void provideInput(const blink::WebVector<float*>& audio_data, | 42 void provideInput(const blink::WebVector<float*>& audio_data, |
43 size_t number_of_frames) override; | 43 size_t number_of_frames) override; |
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84 | 84 |
85 // NOTE: Weak pointers must be invalidated before all other member variables. | 85 // NOTE: Weak pointers must be invalidated before all other member variables. |
86 base::WeakPtrFactory<WebAudioSourceProviderImpl> weak_factory_; | 86 base::WeakPtrFactory<WebAudioSourceProviderImpl> weak_factory_; |
87 | 87 |
88 DISALLOW_IMPLICIT_CONSTRUCTORS(WebAudioSourceProviderImpl); | 88 DISALLOW_IMPLICIT_CONSTRUCTORS(WebAudioSourceProviderImpl); |
89 }; | 89 }; |
90 | 90 |
91 } // namespace media | 91 } // namespace media |
92 | 92 |
93 #endif // MEDIA_BLINK_WEBAUDIOSOURCEPROVIDER_IMPL_H_ | 93 #endif // MEDIA_BLINK_WEBAUDIOSOURCEPROVIDER_IMPL_H_ |
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