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Bug 810177 - Part 4: Make nsMediaDecoder not depend on nsHTMLMediaEle…
…ment; r=cpearce The basic idea in this patch is to create an MediaDecoderOwner interface which nsHTMLMediaElement would implement, and put everything needed by nsMediaDeocder on that interface. In addition to that, there are a number of other cleanup patches which enables us to eliminate many of the nsHTMLMediaElement.h #includes in the media code.
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| Original file line number | Diff line number | Diff line change |
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| /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | ||
| /* vim:set ts=2 sw=2 sts=2 et cindent: */ | ||
| /* This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
| #ifndef MediaDecoderOwner_h_ | ||
| #define MediaDecoderOwner_h_ | ||
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| #include "nsMediaDecoder.h" | ||
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| namespace mozilla { | ||
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| class MediaDecoderOwner | ||
| { | ||
| public: | ||
| // Called by the media decoder to indicate that the download has stalled | ||
| // (no data has arrived for a while). | ||
| virtual void DownloadStalled() = 0; | ||
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| // Dispatch a synchronous event to the decoder owner | ||
| virtual nsresult DispatchEvent(const nsAString& aName) = 0; | ||
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| // Dispatch an asynchronous event to the decoder owner | ||
| virtual nsresult DispatchAsyncEvent(const nsAString& aName) = 0; | ||
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| /** | ||
| * Fires a timeupdate event. If aPeriodic is true, the event will only | ||
| * be fired if we've not fired a timeupdate event (for any reason) in the | ||
| * last 250ms, as required by the spec when the current time is periodically | ||
| * increasing during playback. | ||
| */ | ||
| virtual void FireTimeUpdate(bool aPeriodic) = 0; | ||
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| // Get the nsHTMLMediaElement object if the decoder is being used from an | ||
| // HTML media element, and null otherwise. | ||
| virtual nsHTMLMediaElement* GetMediaElement() | ||
| { | ||
| return nullptr; | ||
| } | ||
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| // Return true if decoding should be paused | ||
| virtual bool GetPaused() = 0; | ||
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| /** | ||
| * Called when data has been written to the underlying audio stream. | ||
| */ | ||
| virtual void NotifyAudioAvailable(float* aFrameBuffer, uint32_t aFrameBufferLength, | ||
| float aTime) = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when it has read the metadata containing video dimensions, | ||
| // etc. | ||
| virtual void MetadataLoaded(uint32_t aChannels, | ||
| uint32_t aRate, | ||
| bool aHasAudio, | ||
| const MetadataTags* aTags) = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when it has read the first frame of the video | ||
| // aResourceFullyLoaded should be true if the resource has been | ||
| // fully loaded and the caller will call ResourceLoaded next. | ||
| virtual void FirstFrameLoaded(bool aResourceFullyLoaded) = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when the resource has completed downloading. | ||
| virtual void ResourceLoaded() = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when the resource has a network error during loading. | ||
| virtual void NetworkError() = 0; | ||
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| // Called by the video decoder object, on the main thread, when the | ||
| // resource has a decode error during metadata loading or decoding. | ||
| virtual void DecodeError() = 0; | ||
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| // Called by the video decoder object, on the main thread, when the | ||
| // resource load has been cancelled. | ||
| virtual void LoadAborted() = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when the video playback has ended. | ||
| virtual void PlaybackEnded() = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when the resource has started seeking. | ||
| virtual void SeekStarted() = 0; | ||
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| // Called by the video decoder object, on the main thread, | ||
| // when the resource has completed seeking. | ||
| virtual void SeekCompleted() = 0; | ||
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| // Called by the media stream, on the main thread, when the download | ||
| // has been suspended by the cache or because the element itself | ||
| // asked the decoder to suspend the download. | ||
| virtual void DownloadSuspended() = 0; | ||
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| // Called by the media stream, on the main thread, when the download | ||
| // has been resumed by the cache or because the element itself | ||
| // asked the decoder to resumed the download. | ||
| // If aForceNetworkLoading is True, ignore the fact that the download has | ||
| // previously finished. We are downloading the middle of the media after | ||
| // having downloaded the end, we need to notify the element a download in | ||
| // ongoing. | ||
| virtual void DownloadResumed(bool aForceNetworkLoading = false) = 0; | ||
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| // Notify that enough data has arrived to start autoplaying. | ||
| // If the element is 'autoplay' and is ready to play back (not paused, | ||
| // autoplay pref enabled, etc), it should start playing back. | ||
| virtual void NotifyAutoplayDataReady() = 0; | ||
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| // Called by the media decoder to indicate whether the media cache has | ||
| // suspended the channel. | ||
| virtual void NotifySuspendedByCache(bool aIsSuspended) = 0; | ||
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| // called to notify that the principal of the decoder's media resource has changed. | ||
| virtual void NotifyDecoderPrincipalChanged() = 0; | ||
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| // Called by the decoder when some data has been downloaded or | ||
| // buffering/seeking has ended. aNextFrameAvailable is true when | ||
| // the data for the next frame is available. This method will | ||
| // decide whether to set the ready state to HAVE_CURRENT_DATA, | ||
| // HAVE_FUTURE_DATA or HAVE_ENOUGH_DATA. | ||
| virtual void UpdateReadyStateForData(nsMediaDecoder::NextFrameStatus aNextFrame) = 0; | ||
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| // Called by the media decoder and the video frame to get the | ||
| // ImageContainer containing the video data. | ||
| virtual mozilla::VideoFrameContainer* GetVideoFrameContainer() = 0; | ||
| }; | ||
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| } | ||
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| #endif | ||
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