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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /dom/media/webvtt/WebVTTListener.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webvtt/WebVTTListener.h')
-rw-r--r-- | dom/media/webvtt/WebVTTListener.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/media/webvtt/WebVTTListener.h b/dom/media/webvtt/WebVTTListener.h new file mode 100644 index 0000000000..45f6bc90d6 --- /dev/null +++ b/dom/media/webvtt/WebVTTListener.h @@ -0,0 +1,69 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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 mozilla_dom_WebVTTLoadListener_h +#define mozilla_dom_WebVTTLoadListener_h + +#include "nsIWebVTTListener.h" +#include "nsIStreamListener.h" +#include "nsIChannelEventSink.h" +#include "nsIInterfaceRequestor.h" +#include "nsCOMPtr.h" +#include "nsCycleCollectionParticipant.h" + +class nsIWebVTTParserWrapper; + +namespace mozilla::dom { + +class HTMLTrackElement; + +class WebVTTListener final : public nsIWebVTTListener, + public nsIStreamListener, + public nsIChannelEventSink, + public nsIInterfaceRequestor { + NS_DECL_CYCLE_COLLECTING_ISUPPORTS + NS_DECL_NSIWEBVTTLISTENER + NS_DECL_NSIREQUESTOBSERVER + NS_DECL_NSISTREAMLISTENER + NS_DECL_NSICHANNELEVENTSINK + NS_DECL_NSIINTERFACEREQUESTOR + + NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(WebVTTListener, nsIStreamListener) + + public: + explicit WebVTTListener(HTMLTrackElement* aElement); + + /** + * Loads the WebVTTListener. Must call this in order for the listener to be + * ready to parse data that is passed to it. + */ + nsresult LoadResource(); + + /** + * When this listener is not going to be used anymore, its owner should take + * a responsibility to call `Cancel()` to prevent this listener making any + * changes for the track element. + */ + bool IsCanceled() const; + void Cancel(); + + private: + ~WebVTTListener(); + + // List of error codes returned from the WebVTT parser that we care about. + enum ErrorCodes { BadSignature = 0 }; + static nsresult ParseChunk(nsIInputStream* aInStream, void* aClosure, + const char* aFromSegment, uint32_t aToOffset, + uint32_t aCount, uint32_t* aWriteCount); + + RefPtr<HTMLTrackElement> mElement; + nsCOMPtr<nsIWebVTTParserWrapper> mParserWrapper; + nsresult mParserWrapperError; + bool mCancel = false; +}; + +} // namespace mozilla::dom + +#endif // mozilla_dom_WebVTTListener_h |