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1 /* | 1 /* |
2 * Copyright (C) 2011, Google Inc. All rights reserved. | 2 * Copyright (C) 2011, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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23 */ | 23 */ |
24 | 24 |
25 #ifndef AsyncAudioDecoder_h | 25 #ifndef AsyncAudioDecoder_h |
26 #define AsyncAudioDecoder_h | 26 #define AsyncAudioDecoder_h |
27 | 27 |
28 #include "platform/heap/Handle.h" | 28 #include "platform/heap/Handle.h" |
29 #include "public/platform/WebThread.h" | 29 #include "public/platform/WebThread.h" |
30 #include "wtf/Forward.h" | 30 #include "wtf/Forward.h" |
31 #include "wtf/OwnPtr.h" | 31 #include "wtf/OwnPtr.h" |
32 | 32 |
33 namespace WebCore { | 33 namespace blink { |
34 | 34 |
35 class AudioBuffer; | 35 class AudioBuffer; |
36 class AudioBufferCallback; | 36 class AudioBufferCallback; |
37 class AudioBus; | 37 class AudioBus; |
38 | 38 |
39 // AsyncAudioDecoder asynchronously decodes audio file data from an ArrayBuffer
in a worker thread. | 39 // AsyncAudioDecoder asynchronously decodes audio file data from an ArrayBuffer
in a worker thread. |
40 // Upon successful decoding, a completion callback will be invoked with the deco
ded PCM data in an AudioBuffer. | 40 // Upon successful decoding, a completion callback will be invoked with the deco
ded PCM data in an AudioBuffer. |
41 | 41 |
42 class AsyncAudioDecoder { | 42 class AsyncAudioDecoder { |
43 WTF_MAKE_NONCOPYABLE(AsyncAudioDecoder); | 43 WTF_MAKE_NONCOPYABLE(AsyncAudioDecoder); |
44 public: | 44 public: |
45 AsyncAudioDecoder(); | 45 AsyncAudioDecoder(); |
46 ~AsyncAudioDecoder(); | 46 ~AsyncAudioDecoder(); |
47 | 47 |
48 // Must be called on the main thread. | 48 // Must be called on the main thread. |
49 void decodeAsync(ArrayBuffer* audioData, float sampleRate, PassOwnPtr<AudioB
ufferCallback> successCallback, PassOwnPtr<AudioBufferCallback> errorCallback); | 49 void decodeAsync(ArrayBuffer* audioData, float sampleRate, PassOwnPtr<AudioB
ufferCallback> successCallback, PassOwnPtr<AudioBufferCallback> errorCallback); |
50 | 50 |
51 private: | 51 private: |
52 PassRefPtrWillBeRawPtr<AudioBuffer> createAudioBufferFromAudioBus(AudioBus*)
; | 52 PassRefPtrWillBeRawPtr<AudioBuffer> createAudioBufferFromAudioBus(AudioBus*)
; |
53 static void decode(ArrayBuffer* audioData, float sampleRate, AudioBufferCall
back* successCallback, AudioBufferCallback* errorCallback); | 53 static void decode(ArrayBuffer* audioData, float sampleRate, AudioBufferCall
back* successCallback, AudioBufferCallback* errorCallback); |
54 static void notifyComplete(ArrayBuffer* audioData, AudioBufferCallback* succ
essCallback, AudioBufferCallback* errorCallback, AudioBus*); | 54 static void notifyComplete(ArrayBuffer* audioData, AudioBufferCallback* succ
essCallback, AudioBufferCallback* errorCallback, AudioBus*); |
55 | 55 |
56 OwnPtr<blink::WebThread> m_thread; | 56 OwnPtr<blink::WebThread> m_thread; |
57 }; | 57 }; |
58 | 58 |
59 } // namespace WebCore | 59 } // namespace blink |
60 | 60 |
61 #endif // AsyncAudioDecoder_h | 61 #endif // AsyncAudioDecoder_h |
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