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25 #ifndef AsyncAudioDecoder_h
26 #define AsyncAudioDecoder_h
28 #include <wtf/MessageQueue.h>
29 #include <wtf/PassOwnPtr.h>
30 #include <wtf/PassRefPtr.h>
31 #include <wtf/RefPtr.h>
32 #include <wtf/Threading.h>
38 class AudioBufferCallback;
40 // AsyncAudioDecoder asynchronously decodes audio file data from an ArrayBuffer in a worker thread.
41 // Upon successful decoding, a completion callback will be invoked with the decoded PCM data in an AudioBuffer.
43 class AsyncAudioDecoder {
44 WTF_MAKE_NONCOPYABLE(AsyncAudioDecoder);
49 // Must be called on the main thread.
50 void decodeAsync(ArrayBuffer* audioData, double sampleRate, PassRefPtr<AudioBufferCallback> successCallback, PassRefPtr<AudioBufferCallback> errorCallback);
54 WTF_MAKE_NONCOPYABLE(DecodingTask);
56 static PassOwnPtr<DecodingTask> create(ArrayBuffer* audioData, double sampleRate, PassRefPtr<AudioBufferCallback> successCallback, PassRefPtr<AudioBufferCallback> errorCallback);
61 DecodingTask(ArrayBuffer* audioData, double sampleRate, PassRefPtr<AudioBufferCallback> successCallback, PassRefPtr<AudioBufferCallback> errorCallback);
63 ArrayBuffer* audioData() { return m_audioData.get(); }
64 double sampleRate() const { return m_sampleRate; }
65 AudioBufferCallback* successCallback() { return m_successCallback.get(); }
66 AudioBufferCallback* errorCallback() { return m_errorCallback.get(); }
67 AudioBuffer* audioBuffer() { return m_audioBuffer.get(); }
69 static void notifyCompleteDispatch(void* userData);
70 void notifyComplete();
72 RefPtr<ArrayBuffer> m_audioData;
74 RefPtr<AudioBufferCallback> m_successCallback;
75 RefPtr<AudioBufferCallback> m_errorCallback;
76 RefPtr<AudioBuffer> m_audioBuffer;
79 static void* threadEntry(void* threadData);
82 WTF::ThreadIdentifier m_threadID;
83 Mutex m_threadCreationMutex;
84 MessageQueue<DecodingTask> m_queue;
87 } // namespace WebCore
89 #endif // AsyncAudioDecoder_h