WebMWriter.h (2081B)
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 #ifndef WebMWriter_h_ 7 #define WebMWriter_h_ 8 9 #include "ContainerWriter.h" 10 11 namespace mozilla { 12 13 class EbmlComposer; 14 15 // Vorbis meta data structure 16 class VorbisMetadata : public TrackMetadataBase { 17 public: 18 nsTArray<uint8_t> mData; 19 int32_t mChannels; 20 float mSamplingFrequency; 21 MetadataKind GetKind() const override { return METADATA_VORBIS; } 22 }; 23 24 // VP8 meta data structure 25 class VP8Metadata : public TrackMetadataBase { 26 public: 27 int32_t mWidth; 28 int32_t mHeight; 29 int32_t mDisplayWidth; 30 int32_t mDisplayHeight; 31 MetadataKind GetKind() const override { return METADATA_VP8; } 32 }; 33 34 /** 35 * WebM writer helper 36 * This class accepts encoder to set audio or video meta data or 37 * encoded data to ebml Composer, and get muxing data through GetContainerData. 38 * The ctor/dtor run in the MediaRecorder thread, others run in MediaEncoder 39 * thread. 40 */ 41 class WebMWriter : public ContainerWriter { 42 public: 43 // Run in MediaRecorder thread 44 WebMWriter(); 45 virtual ~WebMWriter(); 46 47 // WriteEncodedTrack inserts raw packets into WebM stream. Does not accept 48 // any flags: any specified will be ignored. Writing is finalized via 49 // flushing via GetContainerData(). 50 nsresult WriteEncodedTrack(const nsTArray<RefPtr<EncodedFrame>>& aData, 51 uint32_t aFlags = 0) override; 52 53 // GetContainerData outputs multiplexing data. 54 // aFlags indicates the muxer should enter into finished stage and flush out 55 // queue data. 56 nsresult GetContainerData(nsTArray<nsTArray<uint8_t>>* aOutputBufs, 57 uint32_t aFlags = 0) override; 58 59 // Assign metadata into muxer 60 nsresult SetMetadata( 61 const nsTArray<RefPtr<TrackMetadataBase>>& aMetadata) override; 62 63 private: 64 UniquePtr<EbmlComposer> mEbmlComposer; 65 }; 66 67 } // namespace mozilla 68 69 #endif