gecko/content/media/WebVTTListener.h
Rick Eyre 3453522908 Bug 882677 - Part 2: Handle ParsingErrors from vtt.js correctly. r=cpearce
* Update vtt.js to the newest version which has the capability
of reporting back ParserErrors.
* Update the update-vtt.js script a bit as well since
the symbols that it exports have changed a bit since the last import.
Some of the general information it outputs has since changed as well
like where the repo exists.
* Update WebVTTListener to set the track readiness state
to 'failed to load' if the WebVTT file is not loaded correctly.
2014-03-17 15:11:41 -04:00

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1.9 KiB
C++

/* -*- 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 "nsAutoPtr.h"
#include "nsIInterfaceRequestor.h"
#include "nsCycleCollectionParticipant.h"
class nsIWebVTTParserWrapper;
namespace mozilla {
namespace dom {
class HTMLTrackElement;
class WebVTTListener MOZ_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:
WebVTTListener(HTMLTrackElement* aElement);
~WebVTTListener();
/**
* Loads the WebVTTListener. Must call this in order for the listener to be
* ready to parse data that is passed to it.
*/
nsresult LoadResource();
private:
// List of error codes returned from the WebVTT parser that we care about.
enum ErrorCodes {
BadSignature = 0
};
static NS_METHOD ParseChunk(nsIInputStream* aInStream, void* aClosure,
const char* aFromSegment, uint32_t aToOffset,
uint32_t aCount, uint32_t* aWriteCount);
nsRefPtr<HTMLTrackElement> mElement;
nsCOMPtr<nsIWebVTTParserWrapper> mParserWrapper;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_WebVTTListener_h