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diff --git a/dom/media/flac/FlacDemuxer.h b/dom/media/flac/FlacDemuxer.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef FLAC_DEMUXER_H_
+#define FLAC_DEMUXER_H_
+
+#include "mozilla/Attributes.h"
+#include "MediaDataDemuxer.h"
+#include "MediaResource.h"
+namespace mozilla {
+
+namespace flac {
+class Frame;
+class FrameParser;
+}
+class FlacTrackDemuxer;
+
+
+class FlacDemuxer : public MediaDataDemuxer {
+public:
+ // MediaDataDemuxer interface.
+ explicit FlacDemuxer(MediaResource* aSource);
+ RefPtr<InitPromise> Init() override;
+ bool HasTrackType(TrackInfo::TrackType aType) const override;
+ uint32_t GetNumberTracks(TrackInfo::TrackType aType) const override;
+ already_AddRefed<MediaTrackDemuxer> GetTrackDemuxer(
+ TrackInfo::TrackType aType, uint32_t aTrackNumber) override;
+ bool IsSeekable() const override;
+
+ // Return true if a valid flac frame header could be found.
+ static bool FlacSniffer(const uint8_t* aData, const uint32_t aLength);
+
+private:
+ bool InitInternal();
+
+ RefPtr<MediaResource> mSource;
+ RefPtr<FlacTrackDemuxer> mTrackDemuxer;
+};
+
+class FlacTrackDemuxer : public MediaTrackDemuxer {
+public:
+ explicit FlacTrackDemuxer(MediaResource* aSource);
+
+ // Initializes the track demuxer by reading the first frame for meta data.
+ // Returns initialization success state.
+ bool Init();
+
+ // MediaTrackDemuxer interface.
+ UniquePtr<TrackInfo> GetInfo() const override;
+ RefPtr<SeekPromise> Seek(media::TimeUnit aTime) override;
+ RefPtr<SamplesPromise> GetSamples(int32_t aNumSamples = 1) override;
+ void Reset() override;
+ int64_t GetResourceOffset() const override;
+ media::TimeIntervals GetBuffered() override;
+ RefPtr<SkipAccessPointPromise> SkipToNextRandomAccessPoint(
+ media::TimeUnit aTimeThreshold) override;
+
+ bool IsSeekable() const;
+
+private:
+ // Destructor.
+ ~FlacTrackDemuxer();
+
+ // Returns the estimated stream duration, or a 0-duration if unknown.
+ media::TimeUnit Duration() const;
+ media::TimeUnit TimeAtEnd();
+
+ // Fast approximate seeking to given time.
+ media::TimeUnit FastSeek(const media::TimeUnit& aTime);
+
+ // Seeks by scanning the stream up to the given time for more accurate results.
+ media::TimeUnit ScanUntil(const media::TimeUnit& aTime);
+
+ // Finds the next valid frame and return it.
+ const flac::Frame& FindNextFrame();
+
+ // Returns the next ADTS frame, if available.
+ already_AddRefed<MediaRawData> GetNextFrame(const flac::Frame& aFrame);
+
+ // Reads aSize bytes into aBuffer from the source starting at aOffset.
+ // Returns the actual size read.
+ int32_t Read(uint8_t* aBuffer, int64_t aOffset, int32_t aSize);
+
+ // Returns the average frame length derived from the previously parsed frames.
+ double AverageFrameLength() const;
+
+ // The (hopefully) Flac resource.
+ MediaResourceIndex mSource;
+
+ // Flac frame parser used to detect frames and extract side info.
+ nsAutoPtr<flac::FrameParser> mParser;
+
+ // Total duration of parsed frames.
+ media::TimeUnit mParsedFramesDuration;
+
+ // Sum of parsed frames' lengths in bytes.
+ uint64_t mTotalFrameLen;
+
+ // Audio track config info.
+ UniquePtr<AudioInfo> mInfo;
+};
+
+} // mozilla
+
+#endif // !FLAC_DEMUXER_H_