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75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(WMFAudioOutputSource_h_)
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#define WMFAudioOutputSource_h_
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#include "WMF.h"
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#include "MFTDecoder.h"
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#include "mozilla/RefPtr.h"
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#include "WMFMediaDataDecoder.h"
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extern const GUID CLSID_WebmMfVp8Dec;
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extern const GUID CLSID_WebmMfVp9Dec;
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namespace mozilla {
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class WMFAudioMFTManager : public MFTManager {
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public:
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WMFAudioMFTManager(const AudioInfo& aConfig);
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~WMFAudioMFTManager();
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bool Init();
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HRESULT Input(MediaRawData* aSample) override;
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// Note WMF's AAC decoder sometimes output negatively timestamped samples,
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// presumably they're the preroll samples, and we strip them. We may return
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// a null aOutput in this case.
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HRESULT Output(int64_t aStreamOffset,
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RefPtr<MediaData>& aOutput) override;
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void Shutdown() override;
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TrackInfo::TrackType GetType() override {
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return TrackInfo::kAudioTrack;
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}
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private:
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HRESULT UpdateOutputType();
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uint32_t mAudioChannels;
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uint32_t mAudioRate;
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nsTArray<BYTE> mUserData;
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// The offset, at which playback started since the
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// last discontinuity.
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media::TimeUnit mAudioTimeOffset;
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// The number of audio frames that we've played since the last
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// discontinuity.
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int64_t mAudioFrameSum;
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enum StreamType {
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Unknown,
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AAC,
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MP3
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};
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StreamType mStreamType;
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const GUID& GetMFTGUID();
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const GUID& GetMediaSubtypeGUID();
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// True if we need to re-initialize mAudioTimeOffset and mAudioFrameSum
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// from the next audio packet we decode. This happens after a seek, since
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// WMF doesn't mark a stream as having a discontinuity after a seek(0).
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bool mMustRecaptureAudioPosition;
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};
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} // namespace mozilla
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#endif // WMFAudioOutputSource_h_
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