The Tor Browser: content/media/webm/WebMWriter.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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 #include "WebMWriter.h"

     7 #include "EbmlComposer.h"

     9 namespace mozilla {

    11 WebMWriter::WebMWriter(uint32_t aTrackTypes) : ContainerWriter()

    12 {

    13   mMetadataRequiredFlag = aTrackTypes;

    14   mEbmlComposer = new EbmlComposer();

    15 }

    17 nsresult

    18 WebMWriter::WriteEncodedTrack(const EncodedFrameContainer& aData,

    19                               uint32_t aFlags)

    20 {

    21   for (uint32_t i = 0 ; i < aData.GetEncodedFrames().Length(); i++) {

    22     mEbmlComposer->WriteSimpleBlock(aData.GetEncodedFrames().ElementAt(i).get());

    23   }

    24   return NS_OK;

    25 }

    27 nsresult

    28 WebMWriter::GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,

    29                              uint32_t aFlags)

    30 {

    31   mEbmlComposer->ExtractBuffer(aOutputBufs, aFlags);

    32   if (aFlags & ContainerWriter::FLUSH_NEEDED) {

    33     mIsWritingComplete = true;

    34   }

    35   return NS_OK;

    36 }

    38 nsresult

    39 WebMWriter::SetMetadata(TrackMetadataBase* aMetadata)

    40 {

    41   MOZ_ASSERT(aMetadata);

    42   if (aMetadata->GetKind() == TrackMetadataBase::METADATA_VP8) {

    43     VP8Metadata* meta = static_cast<VP8Metadata*>(aMetadata);

    44     MOZ_ASSERT(meta, "Cannot find vp8 encoder metadata");

    45     mEbmlComposer->SetVideoConfig(meta->mWidth, meta->mHeight,

    46                                   meta->mDisplayWidth, meta->mDisplayHeight,

    47                                   meta->mEncodedFrameRate);

    48     mMetadataRequiredFlag = mMetadataRequiredFlag & ~ContainerWriter::CREATE_VIDEO_TRACK;

    49   }

    51   if (aMetadata->GetKind() == TrackMetadataBase::METADATA_VORBIS) {

    52     VorbisMetadata* meta = static_cast<VorbisMetadata*>(aMetadata);

    53     MOZ_ASSERT(meta, "Cannot find vorbis encoder metadata");

    54     mEbmlComposer->SetAudioConfig(meta->mSamplingFrequency, meta->mChannels, meta->mBitDepth);

    55     mEbmlComposer->SetAudioCodecPrivateData(meta->mData);

    56     mMetadataRequiredFlag = mMetadataRequiredFlag & ~ContainerWriter::CREATE_AUDIO_TRACK;

    57   }

    59   if (!mMetadataRequiredFlag) {

    60     mEbmlComposer->GenerateHeader();

    61   }

    62   return NS_OK;

    63 }

    65 } // mozilla namespace

The Tor Browser / file revision