WMFAudioMFTManager.h

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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(WMFAudioOutputSource_h_)

#  define WMFAudioOutputSource_h_

#  include "MFTDecoder.h"

#  include "WMF.h"

#  include "WMFDecoderModule.h"

#  include "WMFMediaDataDecoder.h"

#  include "mozilla/RefPtr.h"

namespace mozilla {

class WMFAudioMFTManager : public MFTManager {

 public:

  explicit WMFAudioMFTManager(const AudioInfo& aConfig);

  ~WMFAudioMFTManager();

  bool Init();

  HRESULT Input(MediaRawData* aSample) override;

  // Note WMF's AAC decoder sometimes output negatively timestamped samples,

  // presumably they're the preroll samples, and we strip them. We may return

  // a null aOutput in this case.

  HRESULT Output(int64_t aStreamOffset, RefPtr<MediaData>& aOutput) override;

  void Shutdown() override;

  TrackInfo::TrackType GetType() override { return TrackInfo::kAudioTrack; }

  nsCString GetDescriptionName() const override {

    return "wmf audio decoder"_ns;

  nsCString GetCodecName() const override;

 private:

  HRESULT UpdateOutputType();

  bool IsPartialOutput(const media::TimeUnit& aNewOutputDuration,

                       const bool aIsRateChangedToHigher) const;

  uint32_t mAudioChannels;

  AudioConfig::ChannelLayout::ChannelMap mChannelsMap;

  uint32_t mAudioRate;

  nsTArray<BYTE> mUserData;

  WMFStreamType mStreamType;

  const GUID& GetMediaSubtypeGUID();

  media::TimeUnit mLastInputTime = media::TimeUnit::Zero();

  media::TimeUnit mLastOutputDuration = media::TimeUnit::Zero();

  bool mFirstFrame = true;

  bool mIsADTS = false;

  uint64_t mTotalMediaFrames = 0;

  uint32_t mEncoderDelay = 0;

  uint32_t mRemainingEncoderDelay = 0;

};

}  // namespace mozilla

#endif  // WMFAudioOutputSource_h_