Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim:set ts=2 sw=2 sts=2 et cindent: */
       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             : #if !defined(MP4Decoder_h_)
       7             : #define MP4Decoder_h_
       8             : 
       9             : #include "ChannelMediaDecoder.h"
      10             : #include "MediaFormatReader.h"
      11             : #include "mozilla/dom/Promise.h"
      12             : #include "mozilla/layers/KnowsCompositor.h"
      13             : 
      14             : namespace mozilla {
      15             : 
      16             : class MediaContainerType;
      17             : 
      18             : // Decoder that uses a bundled MP4 demuxer and platform decoders to play MP4.
      19           0 : class MP4Decoder : public ChannelMediaDecoder
      20             : {
      21             : public:
      22             :   explicit MP4Decoder(MediaDecoderInit& aInit);
      23             : 
      24           0 :   ChannelMediaDecoder* Clone(MediaDecoderInit& aInit) override
      25             :   {
      26           0 :     if (!IsEnabled()) {
      27           0 :       return nullptr;
      28             :     }
      29           0 :     return new MP4Decoder(aInit);
      30             :   }
      31             : 
      32             :   MediaDecoderStateMachine* CreateStateMachine() override;
      33             : 
      34             :   // Returns true if aContainerType is an MP4 type that we think we can render
      35             :   // with the a platform decoder backend.
      36             :   // If provided, codecs are checked for support.
      37             :   static bool IsSupportedType(const MediaContainerType& aContainerType,
      38             :                               DecoderDoctorDiagnostics* aDiagnostics);
      39             : 
      40             :   // Return true if aMimeType is a one of the strings used by our demuxers to
      41             :   // identify H264. Does not parse general content type strings, i.e. white
      42             :   // space matters.
      43             :   static bool IsH264(const nsACString& aMimeType);
      44             : 
      45             :   // Return true if aMimeType is a one of the strings used by our demuxers to
      46             :   // identify AAC. Does not parse general content type strings, i.e. white
      47             :   // space matters.
      48             :   static bool IsAAC(const nsACString& aMimeType);
      49             : 
      50             :   // Returns true if the MP4 backend is preffed on.
      51             :   static bool IsEnabled();
      52             : 
      53             :   static already_AddRefed<dom::Promise>
      54             :   IsVideoAccelerated(layers::KnowsCompositor* aKnowsCompositor, nsIGlobalObject* aParent);
      55             : 
      56             :   void GetMozDebugReaderData(nsACString& aString) override;
      57             : };
      58             : 
      59             : } // namespace mozilla
      60             : 
      61             : #endif