The Tor Browser: content/media/WebVTTListener.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef mozilla_dom_WebVTTLoadListener_h

     7 #define mozilla_dom_WebVTTLoadListener_h

     9 #include "nsIWebVTTListener.h"

    10 #include "nsIStreamListener.h"

    11 #include "nsIChannelEventSink.h"

    12 #include "nsAutoPtr.h"

    13 #include "nsIInterfaceRequestor.h"

    14 #include "nsCycleCollectionParticipant.h"

    16 class nsIWebVTTParserWrapper;

    18 namespace mozilla {

    19 namespace dom {

    21 class HTMLTrackElement;

    23 class WebVTTListener MOZ_FINAL : public nsIWebVTTListener,

    24                                  public nsIStreamListener,

    25                                  public nsIChannelEventSink,

    26                                  public nsIInterfaceRequestor

    27 {

    28   NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    29   NS_DECL_NSIWEBVTTLISTENER

    30   NS_DECL_NSIREQUESTOBSERVER

    31   NS_DECL_NSISTREAMLISTENER

    32   NS_DECL_NSICHANNELEVENTSINK

    33   NS_DECL_NSIINTERFACEREQUESTOR

    35   NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(WebVTTListener,

    36                                            nsIStreamListener)

    38 public:

    39   WebVTTListener(HTMLTrackElement* aElement);

    40   ~WebVTTListener();

    42   /**

    43    * Loads the WebVTTListener. Must call this in order for the listener to be

    44    * ready to parse data that is passed to it.

    45    */

    46   nsresult LoadResource();

    48 private:

    49   // List of error codes returned from the WebVTT parser that we care about.

    50   enum ErrorCodes {

    51     BadSignature = 0

    52   };

    53   static NS_METHOD ParseChunk(nsIInputStream* aInStream, void* aClosure,

    54                               const char* aFromSegment, uint32_t aToOffset,

    55                               uint32_t aCount, uint32_t* aWriteCount);

    57   nsRefPtr<HTMLTrackElement> mElement;

    58   nsCOMPtr<nsIWebVTTParserWrapper> mParserWrapper;

    59 };

    61 } // namespace dom

    62 } // namespace mozilla

    64 #endif // mozilla_dom_WebVTTListener_h

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