The Tor Browser / file comparison
comparison: content/media/webaudio/MediaBufferDecoder.h
content/media/webaudio/MediaBufferDecoder.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:69d30c6f8201 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef MediaBufferDecoder_h_ | |
| 8 #define MediaBufferDecoder_h_ | |
| 9 | |
| 10 #include "nsWrapperCache.h" | |
| 11 #include "nsCOMPtr.h" | |
| 12 #include "nsAutoPtr.h" | |
| 13 #include "nsIThreadPool.h" | |
| 14 #include "nsString.h" | |
| 15 #include "nsTArray.h" | |
| 16 #include "mozilla/dom/TypedArray.h" | |
| 17 #include "mozilla/MemoryReporting.h" | |
| 18 | |
| 19 namespace mozilla { | |
| 20 | |
| 21 namespace dom { | |
| 22 class AudioBuffer; | |
| 23 class AudioContext; | |
| 24 class DecodeErrorCallback; | |
| 25 class DecodeSuccessCallback; | |
| 26 } | |
| 27 | |
| 28 struct WebAudioDecodeJob MOZ_FINAL | |
| 29 { | |
| 30 // You may omit both the success and failure callback, or you must pass both. | |
| 31 // The callbacks are only necessary for asynchronous operation. | |
| 32 WebAudioDecodeJob(const nsACString& aContentType, | |
| 33 dom::AudioContext* aContext, | |
| 34 dom::DecodeSuccessCallback* aSuccessCallback = nullptr, | |
| 35 dom::DecodeErrorCallback* aFailureCallback = nullptr); | |
| 36 ~WebAudioDecodeJob(); | |
| 37 | |
| 38 NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebAudioDecodeJob) | |
| 39 NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebAudioDecodeJob) | |
| 40 | |
| 41 enum ErrorCode { | |
| 42 NoError, | |
| 43 UnknownContent, | |
| 44 UnknownError, | |
| 45 InvalidContent, | |
| 46 NoAudio | |
| 47 }; | |
| 48 | |
| 49 typedef void (WebAudioDecodeJob::*ResultFn)(ErrorCode); | |
| 50 typedef nsAutoArrayPtr<float> ChannelBuffer; | |
| 51 | |
| 52 void OnSuccess(ErrorCode /* ignored */); | |
| 53 void OnFailure(ErrorCode aErrorCode); | |
| 54 | |
| 55 bool AllocateBuffer(); | |
| 56 | |
| 57 size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const; | |
| 58 | |
| 59 nsCString mContentType; | |
| 60 uint32_t mWriteIndex; | |
| 61 nsRefPtr<dom::AudioContext> mContext; | |
| 62 nsRefPtr<dom::DecodeSuccessCallback> mSuccessCallback; | |
| 63 nsRefPtr<dom::DecodeErrorCallback> mFailureCallback; // can be null | |
| 64 nsRefPtr<dom::AudioBuffer> mOutput; | |
| 65 FallibleTArray<ChannelBuffer> mChannelBuffers; | |
| 66 }; | |
| 67 | |
| 68 /** | |
| 69 * This class is used to decode media buffers on a dedicated threadpool. | |
| 70 * | |
| 71 * This class manages the resources that it uses internally (such as the | |
| 72 * thread-pool) and provides a clean external interface. | |
| 73 */ | |
| 74 class MediaBufferDecoder | |
| 75 { | |
| 76 public: | |
| 77 void AsyncDecodeMedia(const char* aContentType, uint8_t* aBuffer, | |
| 78 uint32_t aLength, WebAudioDecodeJob& aDecodeJob); | |
| 79 | |
| 80 ~MediaBufferDecoder() { Shutdown(); } | |
| 81 void Shutdown(); | |
| 82 | |
| 83 size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const | |
| 84 { | |
| 85 return 0; | |
| 86 } | |
| 87 | |
| 88 private: | |
| 89 bool EnsureThreadPoolInitialized(); | |
| 90 | |
| 91 private: | |
| 92 nsCOMPtr<nsIThreadPool> mThreadPool; | |
| 93 }; | |
| 94 | |
| 95 } | |
| 96 | |
| 97 #endif | |
| 98 |
