/* -*- 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/. */

#include "DummyMediaDataDecoder.h"

namespace mozilla {

class NullVideoDataCreator : public DummyDataCreator

{

public:

  NullVideoDataCreator() { }

  already_AddRefed<MediaData> Create(MediaRawData* aSample) override

  {

    // Create a dummy VideoData with no image. This gives us something to

    // send to media streams if necessary.

    RefPtr<VideoData> v(new VideoData(aSample->mOffset,

                                      aSample->mTime,

                                      aSample->mDuration,

                                      aSample->mKeyframe,

                                      aSample->mTimecode,

                                      gfx::IntSize(),

                                      0));

    return v.forget();

  }

};

class NullDecoderModule : public PlatformDecoderModule

{

public:

  // Decode thread.

  already_AddRefed<MediaDataDecoder> CreateVideoDecoder(

    const CreateDecoderParams& aParams) override

  {

    UniquePtr<DummyDataCreator> creator = MakeUnique<NullVideoDataCreator>();

    RefPtr<MediaDataDecoder> decoder = new DummyMediaDataDecoder(

      std::move(creator), NS_LITERAL_CSTRING("null media data decoder"), aParams);

    return decoder.forget();

  }

  // Decode thread.

  already_AddRefed<MediaDataDecoder> CreateAudioDecoder(

    const CreateDecoderParams& aParams) override

  {

    MOZ_ASSERT(false, "Audio decoders are unsupported.");

    return nullptr;

  }

  bool SupportsMimeType(const nsACString& aMimeType,

                        DecoderDoctorDiagnostics* aDiagnostics) const override

  {

    return true;

  }

};

already_AddRefed<PlatformDecoderModule>

CreateNullDecoderModule()

{

  RefPtr<PlatformDecoderModule> pdm = new NullDecoderModule();

  return pdm.forget();

}

} // namespace mozilla