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

 /* vim:set ts=2 sw=2 sts=2 et cindent: */

 /* 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/. */

 #if !defined(DirectShowDecoder_h_)

 #define DirectShowDecoder_h_

 #include "MediaDecoder.h"

 namespace mozilla {

 // Decoder that uses DirectShow to playback MP3 files only.

 class DirectShowDecoder : public MediaDecoder

 {

 public:

   DirectShowDecoder();

   virtual ~DirectShowDecoder();

   MediaDecoder* Clone() MOZ_OVERRIDE {

     if (!IsEnabled()) {

       return nullptr;

     }

     return new DirectShowDecoder();

   }

   MediaDecoderStateMachine* CreateStateMachine() MOZ_OVERRIDE;

   // Returns true if aType is a MIME type that we render with the

   // DirectShow backend. If aCodecList is non null,

   // it is filled with a (static const) null-terminated list of strings

   // denoting the codecs we'll playback. Note that playback is strictly

   // limited to MP3 only.

   static bool GetSupportedCodecs(const nsACString& aType,

                                  char const *const ** aCodecList);

   // Returns true if the DirectShow backend is preffed on.

   static bool IsEnabled();

 };

 } // namespace mozilla

 #endif