1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webm/WebMWriter.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,72 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.7 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef WebMWriter_h_
1.10 +#define WebMWriter_h_
1.11 +
1.12 +#include "ContainerWriter.h"
1.13 +
1.14 +namespace mozilla {
1.15 +
1.16 +class EbmlComposer;
1.17 +
1.18 +// Vorbis meta data structure
1.19 +class VorbisMetadata : public TrackMetadataBase
1.20 +{
1.21 +public:
1.22 + nsTArray<uint8_t> mData;
1.23 + int32_t mChannels;
1.24 + int32_t mBitDepth;
1.25 + float mSamplingFrequency;
1.26 + MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_VORBIS; }
1.27 +};
1.28 +
1.29 +// VP8 meta data structure
1.30 +class VP8Metadata : public TrackMetadataBase
1.31 +{
1.32 +public:
1.33 + int32_t mWidth;
1.34 + int32_t mHeight;
1.35 + int32_t mDisplayWidth;
1.36 + int32_t mDisplayHeight;
1.37 + int32_t mEncodedFrameRate;
1.38 + MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_VP8; }
1.39 +};
1.40 +
1.41 +/**
1.42 + * WebM writer helper
1.43 + * This class accepts encoder to set audio or video meta data or
1.44 + * encoded data to ebml Composer, and get muxing data through GetContainerData.
1.45 + * The ctor/dtor run in the MediaRecorder thread, others run in MediaEncoder thread.
1.46 + */
1.47 +class WebMWriter : public ContainerWriter
1.48 +{
1.49 +public:
1.50 + // aTrackTypes indicate this muxer should multiplex into Video only or A/V foramt.
1.51 + // Run in MediaRecorder thread
1.52 + WebMWriter(uint32_t aTrackTypes);
1.53 + // WriteEncodedTrack inserts raw packets into WebM stream.
1.54 + nsresult WriteEncodedTrack(const EncodedFrameContainer &aData,
1.55 + uint32_t aFlags = 0) MOZ_OVERRIDE;
1.56 +
1.57 + // GetContainerData outputs multiplexing data.
1.58 + // aFlags indicates the muxer should enter into finished stage and flush out
1.59 + // queue data.
1.60 + nsresult GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,
1.61 + uint32_t aFlags = 0) MOZ_OVERRIDE;
1.62 +
1.63 + // Assign metadata into muxer
1.64 + nsresult SetMetadata(TrackMetadataBase* aMetadata) MOZ_OVERRIDE;
1.65 +
1.66 +private:
1.67 + nsAutoPtr<EbmlComposer> mEbmlComposer;
1.68 +
1.69 + // Indicate what kind of meta data needed in the writer.
1.70 + // If this value become 0, it means writer can start to generate header.
1.71 + uint8_t mMetadataRequiredFlag;
1.72 +};
1.73 +
1.74 +}
1.75 +#endif
