dom/media/hls/HLSDecoder.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 HLSDecoder_h_
   8 #define HLSDecoder_h_
   9
  10 #include "MediaDecoder.h"
  11 #include "mozilla/java/GeckoHLSResourceWrapperWrappers.h"
  12
  13 namespace mozilla {
  14
  15 class HLSResourceCallbacksSupport;
  16
  17 class HLSDecoder final : public MediaDecoder {
  18  public:
  19   static RefPtr<HLSDecoder> Create(MediaDecoderInit& aInit);
  20
  21   // Returns true if the HLS backend is pref'ed on.
  22   static bool IsEnabled();
  23
  24   // Returns true if aContainerType is an HLS type that we think we can render
  25   // with the a platform decoder backend.
  26   // If provided, codecs are checked for support.
  27   static bool IsSupportedType(const MediaContainerType& aContainerType);
  28
  29   nsresult Load(nsIChannel* aChannel);
  30
  31   // MediaDecoder interface.
  32   void Play() override;
  33
  34   void Pause() override;
  35
  36   void AddSizeOfResources(ResourceSizes* aSizes) override;
  37   already_AddRefed<nsIPrincipal> GetCurrentPrincipal() override;
  38   bool HadCrossOriginRedirects() override;
  39   bool IsTransportSeekable() override { return true; }
  40   void Suspend() override;
  41   void Resume() override;
  42   void Shutdown() override;
  43
  44   // Called as data arrives on the underlying HLS player. Main thread only.
  45   void NotifyDataArrived();
  46
  47   // Called when Exoplayer start to load media. Main thread only.
  48   void NotifyLoad(nsCString aMediaUrl);
  49
  50  private:
  51   friend class HLSResourceCallbacksSupport;
  52
  53   explicit HLSDecoder(MediaDecoderInit& aInit);
  54   ~HLSDecoder();
  55   MediaDecoderStateMachineBase* CreateStateMachine(
  56       bool aDisableExternalEngine) override;
  57
  58   bool CanPlayThroughImpl() final {
  59     // TODO: We don't know how to estimate 'canplaythrough' for this decoder.
  60     // For now we just return true for 'autoplay' can work.
  61     return true;
  62   }
  63
  64   void UpdateCurrentPrincipal(nsCString aMediaUrl);
  65   already_AddRefed<nsIPrincipal> GetContentPrincipal(nsCString aMediaUrl);
  66
  67   static size_t sAllocatedInstances;  // Access only in the main thread.
  68
  69   nsCOMPtr<nsIChannel> mChannel;
  70   nsCOMPtr<nsIURI> mURI;
  71   java::GeckoHLSResourceWrapper::GlobalRef mHLSResourceWrapper;
  72   java::GeckoHLSResourceWrapper::Callbacks::GlobalRef mJavaCallbacks;
  73   RefPtr<HLSResourceCallbacksSupport> mCallbackSupport;
  74   nsCOMPtr<nsIPrincipal> mContentPrincipal;
  75 };
  76
  77 }  // namespace mozilla
  78
  79 #endif /* HLSDecoder_h_ */