The Tor Browser: content/media/webm/WebMWriter.h@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     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/. */

     6 #ifndef WebMWriter_h_

     7 #define WebMWriter_h_

     9 #include "ContainerWriter.h"

    11 namespace mozilla {

    13 class EbmlComposer;

    15 // Vorbis meta data structure

    16 class VorbisMetadata : public TrackMetadataBase

    17 {

    18 public:

    19   nsTArray<uint8_t> mData;

    20   int32_t mChannels;

    21   int32_t mBitDepth;

    22   float mSamplingFrequency;

    23   MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_VORBIS; }

    24 };

    26 // VP8 meta data structure

    27 class VP8Metadata : public TrackMetadataBase

    28 {

    29 public:

    30   int32_t mWidth;

    31   int32_t mHeight;

    32   int32_t mDisplayWidth;

    33   int32_t mDisplayHeight;

    34   int32_t mEncodedFrameRate;

    35   MetadataKind GetKind() const MOZ_OVERRIDE { return METADATA_VP8; }

    36 };

    38 /**

    39  * WebM writer helper

    40  * This class accepts encoder to set audio or video meta data or

    41  * encoded data to ebml Composer, and get muxing data through GetContainerData.

    42  * The ctor/dtor run in the MediaRecorder thread, others run in MediaEncoder thread.

    43  */

    44 class WebMWriter : public ContainerWriter

    45 {

    46 public:

    47   // aTrackTypes indicate this muxer should multiplex into Video only or A/V foramt.

    48   // Run in MediaRecorder thread

    49   WebMWriter(uint32_t aTrackTypes);

    50   // WriteEncodedTrack inserts raw packets into WebM stream.

    51   nsresult WriteEncodedTrack(const EncodedFrameContainer &aData,

    52                              uint32_t aFlags = 0) MOZ_OVERRIDE;

    54   // GetContainerData outputs multiplexing data.

    55   // aFlags indicates the muxer should enter into finished stage and flush out

    56   // queue data.

    57   nsresult GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,

    58                             uint32_t aFlags = 0) MOZ_OVERRIDE;

    60   // Assign metadata into muxer

    61   nsresult SetMetadata(TrackMetadataBase* aMetadata) MOZ_OVERRIDE;

    63 private:

    64   nsAutoPtr<EbmlComposer> mEbmlComposer;

    66   // Indicate what kind of meta data needed in the writer.

    67   // If this value become 0, it means writer can start to generate header.

    68   uint8_t mMetadataRequiredFlag;

    69 };

    71 }

    72 #endif

The Tor Browser / file revision