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-rw-r--r--dom/media/MediaData.cpp602
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diff --git a/dom/media/MediaData.cpp b/dom/media/MediaData.cpp
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+++ b/dom/media/MediaData.cpp
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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/. */
+
+#include "MediaData.h"
+
+#include "ImageContainer.h"
+#include "MediaInfo.h"
+#include "MediaResult.h"
+#include "PerformanceRecorder.h"
+#include "VideoUtils.h"
+#include "YCbCrUtils.h"
+#include "mozilla/gfx/gfxVars.h"
+#include "mozilla/layers/ImageBridgeChild.h"
+#include "mozilla/layers/KnowsCompositor.h"
+#include "mozilla/layers/SharedRGBImage.h"
+
+#include <stdint.h>
+
+#ifdef XP_WIN
+# include "mozilla/gfx/DeviceManagerDx.h"
+# include "mozilla/layers/D3D11ShareHandleImage.h"
+# include "mozilla/layers/D3D11YCbCrImage.h"
+#elif XP_MACOSX
+# include "MacIOSurfaceImage.h"
+# include "mozilla/gfx/gfxVars.h"
+#endif
+
+namespace mozilla {
+
+using namespace mozilla::gfx;
+using layers::PlanarYCbCrData;
+using layers::PlanarYCbCrImage;
+using media::TimeUnit;
+
+const char* AudioData::sTypeName = "audio";
+const char* VideoData::sTypeName = "video";
+
+AudioData::AudioData(int64_t aOffset, const media::TimeUnit& aTime,
+ AlignedAudioBuffer&& aData, uint32_t aChannels,
+ uint32_t aRate, uint32_t aChannelMap)
+ // Passing TimeUnit::Zero() here because we can't pass the result of an
+ // arithmetic operation to the CheckedInt ctor. We set the duration in the
+ // ctor body below.
+ : MediaData(sType, aOffset, aTime, TimeUnit::Zero()),
+ mChannels(aChannels),
+ mChannelMap(aChannelMap),
+ mRate(aRate),
+ mOriginalTime(aTime),
+ mAudioData(std::move(aData)),
+ mFrames(mAudioData.Length() / aChannels) {
+ MOZ_RELEASE_ASSERT(aChannels != 0,
+ "Can't create an AudioData with 0 channels.");
+ MOZ_RELEASE_ASSERT(aRate != 0,
+ "Can't create an AudioData with a sample-rate of 0.");
+ mDuration = TimeUnit(mFrames, aRate);
+}
+
+Span<AudioDataValue> AudioData::Data() const {
+ return Span{GetAdjustedData(), mFrames * mChannels};
+}
+
+void AudioData::SetOriginalStartTime(const media::TimeUnit& aStartTime) {
+ MOZ_ASSERT(mTime == mOriginalTime,
+ "Do not call this if data has been trimmed!");
+ mTime = aStartTime;
+ mOriginalTime = aStartTime;
+}
+
+bool AudioData::AdjustForStartTime(const media::TimeUnit& aStartTime) {
+ mOriginalTime -= aStartTime;
+ mTime -= aStartTime;
+ if (mTrimWindow) {
+ *mTrimWindow -= aStartTime;
+ }
+ if (mTime.IsNegative()) {
+ NS_WARNING("Negative audio start time after time-adjustment!");
+ }
+ return mTime.IsValid() && mOriginalTime.IsValid();
+}
+
+bool AudioData::SetTrimWindow(const media::TimeInterval& aTrim) {
+ MOZ_DIAGNOSTIC_ASSERT(aTrim.mStart.IsValid() && aTrim.mEnd.IsValid(),
+ "An overflow occurred on the provided TimeInterval");
+ if (!mAudioData) {
+ // MoveableData got called. Can no longer work on it.
+ return false;
+ }
+ if (aTrim.mStart < mOriginalTime || aTrim.mEnd > GetEndTime()) {
+ return false;
+ }
+
+ auto trimBefore = aTrim.mStart - mOriginalTime;
+ auto trimAfter = aTrim.mEnd - mOriginalTime;
+ if (!trimBefore.IsValid() || !trimAfter.IsValid()) {
+ // Overflow.
+ return false;
+ }
+ if (!mTrimWindow && trimBefore.IsZero() && trimAfter == mDuration) {
+ // Nothing to change, abort early to prevent rounding errors.
+ return true;
+ }
+
+ size_t frameOffset = trimBefore.ToTicksAtRate(mRate);
+ mTrimWindow = Some(aTrim);
+ mDataOffset = frameOffset * mChannels;
+ MOZ_DIAGNOSTIC_ASSERT(mDataOffset <= mAudioData.Length(),
+ "Data offset outside original buffer");
+ int64_t frameCountAfterTrim = (trimAfter - trimBefore).ToTicksAtRate(mRate);
+ if (frameCountAfterTrim >
+ AssertedCast<int64_t>(mAudioData.Length() / mChannels)) {
+ // Accept rounding error caused by an imprecise time_base in the container,
+ // that can cause a mismatch but not other kind of unexpected frame count.
+ MOZ_RELEASE_ASSERT(!trimBefore.IsBase(mRate));
+ mFrames = 0;
+ } else {
+ mFrames = frameCountAfterTrim;
+ }
+ mTime = mOriginalTime + trimBefore;
+ mDuration = TimeUnit(mFrames, mRate);
+
+ return true;
+}
+
+AudioDataValue* AudioData::GetAdjustedData() const {
+ if (!mAudioData) {
+ return nullptr;
+ }
+ return mAudioData.Data() + mDataOffset;
+}
+
+void AudioData::EnsureAudioBuffer() {
+ if (mAudioBuffer || !mAudioData) {
+ return;
+ }
+ const AudioDataValue* srcData = GetAdjustedData();
+ CheckedInt<size_t> bufferSize(sizeof(AudioDataValue));
+ bufferSize *= mFrames;
+ bufferSize *= mChannels;
+ mAudioBuffer = SharedBuffer::Create(bufferSize);
+
+ AudioDataValue* destData = static_cast<AudioDataValue*>(mAudioBuffer->Data());
+ for (uint32_t i = 0; i < mFrames; ++i) {
+ for (uint32_t j = 0; j < mChannels; ++j) {
+ destData[j * mFrames + i] = srcData[i * mChannels + j];
+ }
+ }
+}
+
+size_t AudioData::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ size_t size =
+ aMallocSizeOf(this) + mAudioData.SizeOfExcludingThis(aMallocSizeOf);
+ if (mAudioBuffer) {
+ size += mAudioBuffer->SizeOfIncludingThis(aMallocSizeOf);
+ }
+ return size;
+}
+
+AlignedAudioBuffer AudioData::MoveableData() {
+ // Trim buffer according to trimming mask.
+ mAudioData.PopFront(mDataOffset);
+ mAudioData.SetLength(mFrames * mChannels);
+ mDataOffset = 0;
+ mFrames = 0;
+ mTrimWindow.reset();
+ return std::move(mAudioData);
+}
+
+static bool ValidatePlane(const VideoData::YCbCrBuffer::Plane& aPlane) {
+ return aPlane.mWidth <= PlanarYCbCrImage::MAX_DIMENSION &&
+ aPlane.mHeight <= PlanarYCbCrImage::MAX_DIMENSION &&
+ aPlane.mWidth * aPlane.mHeight < MAX_VIDEO_WIDTH * MAX_VIDEO_HEIGHT &&
+ aPlane.mStride > 0 && aPlane.mWidth <= aPlane.mStride;
+}
+
+static MediaResult ValidateBufferAndPicture(
+ const VideoData::YCbCrBuffer& aBuffer, const IntRect& aPicture) {
+ // The following situation should never happen unless there is a bug
+ // in the decoder
+ if (aBuffer.mPlanes[1].mWidth != aBuffer.mPlanes[2].mWidth ||
+ aBuffer.mPlanes[1].mHeight != aBuffer.mPlanes[2].mHeight) {
+ return MediaResult(NS_ERROR_INVALID_ARG,
+ "Chroma planes with different sizes");
+ }
+
+ // The following situations could be triggered by invalid input
+ if (aPicture.width <= 0 || aPicture.height <= 0) {
+ return MediaResult(NS_ERROR_INVALID_ARG, "Empty picture rect");
+ }
+ if (!ValidatePlane(aBuffer.mPlanes[0]) ||
+ !ValidatePlane(aBuffer.mPlanes[1]) ||
+ !ValidatePlane(aBuffer.mPlanes[2])) {
+ return MediaResult(NS_ERROR_INVALID_ARG, "Invalid plane size");
+ }
+
+ // Ensure the picture size specified in the headers can be extracted out of
+ // the frame we've been supplied without indexing out of bounds.
+ CheckedUint32 xLimit = aPicture.x + CheckedUint32(aPicture.width);
+ CheckedUint32 yLimit = aPicture.y + CheckedUint32(aPicture.height);
+ if (!xLimit.isValid() || xLimit.value() > aBuffer.mPlanes[0].mStride ||
+ !yLimit.isValid() || yLimit.value() > aBuffer.mPlanes[0].mHeight) {
+ // The specified picture dimensions can't be contained inside the video
+ // frame, we'll stomp memory if we try to copy it. Fail.
+ return MediaResult(NS_ERROR_INVALID_ARG, "Overflowing picture rect");
+ }
+ return MediaResult(NS_OK);
+}
+
+VideoData::VideoData(int64_t aOffset, const TimeUnit& aTime,
+ const TimeUnit& aDuration, bool aKeyframe,
+ const TimeUnit& aTimecode, IntSize aDisplay,
+ layers::ImageContainer::FrameID aFrameID)
+ : MediaData(Type::VIDEO_DATA, aOffset, aTime, aDuration),
+ mDisplay(aDisplay),
+ mFrameID(aFrameID),
+ mSentToCompositor(false),
+ mNextKeyFrameTime(TimeUnit::Invalid()) {
+ MOZ_ASSERT(!mDuration.IsNegative(), "Frame must have non-negative duration.");
+ mKeyframe = aKeyframe;
+ mTimecode = aTimecode;
+}
+
+VideoData::~VideoData() = default;
+
+size_t VideoData::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ size_t size = aMallocSizeOf(this);
+
+ // Currently only PLANAR_YCBCR has a well defined function for determining
+ // it's size, so reporting is limited to that type.
+ if (mImage && mImage->GetFormat() == ImageFormat::PLANAR_YCBCR) {
+ const mozilla::layers::PlanarYCbCrImage* img =
+ static_cast<const mozilla::layers::PlanarYCbCrImage*>(mImage.get());
+ size += img->SizeOfIncludingThis(aMallocSizeOf);
+ }
+
+ return size;
+}
+
+ColorDepth VideoData::GetColorDepth() const {
+ if (!mImage) {
+ return ColorDepth::COLOR_8;
+ }
+
+ return mImage->GetColorDepth();
+}
+
+void VideoData::UpdateDuration(const TimeUnit& aDuration) {
+ MOZ_ASSERT(!aDuration.IsNegative());
+ mDuration = aDuration;
+}
+
+void VideoData::UpdateTimestamp(const TimeUnit& aTimestamp) {
+ MOZ_ASSERT(!aTimestamp.IsNegative());
+
+ auto updatedDuration = GetEndTime() - aTimestamp;
+ MOZ_ASSERT(!updatedDuration.IsNegative());
+
+ mTime = aTimestamp;
+ mDuration = updatedDuration;
+}
+
+bool VideoData::AdjustForStartTime(const media::TimeUnit& aStartTime) {
+ mTime -= aStartTime;
+ if (mTime.IsNegative()) {
+ NS_WARNING("Negative video start time after time-adjustment!");
+ }
+ return mTime.IsValid();
+}
+
+PlanarYCbCrData ConstructPlanarYCbCrData(const VideoInfo& aInfo,
+ const VideoData::YCbCrBuffer& aBuffer,
+ const IntRect& aPicture) {
+ const VideoData::YCbCrBuffer::Plane& Y = aBuffer.mPlanes[0];
+ const VideoData::YCbCrBuffer::Plane& Cb = aBuffer.mPlanes[1];
+ const VideoData::YCbCrBuffer::Plane& Cr = aBuffer.mPlanes[2];
+
+ PlanarYCbCrData data;
+ data.mYChannel = Y.mData;
+ data.mYStride = AssertedCast<int32_t>(Y.mStride);
+ data.mYSkip = AssertedCast<int32_t>(Y.mSkip);
+ data.mCbChannel = Cb.mData;
+ data.mCrChannel = Cr.mData;
+ data.mCbCrStride = AssertedCast<int32_t>(Cb.mStride);
+ data.mCbSkip = AssertedCast<int32_t>(Cb.mSkip);
+ data.mCrSkip = AssertedCast<int32_t>(Cr.mSkip);
+ data.mPictureRect = aPicture;
+ data.mStereoMode = aInfo.mStereoMode;
+ data.mYUVColorSpace = aBuffer.mYUVColorSpace;
+ data.mColorPrimaries = aBuffer.mColorPrimaries;
+ data.mColorDepth = aBuffer.mColorDepth;
+ if (aInfo.mTransferFunction) {
+ data.mTransferFunction = *aInfo.mTransferFunction;
+ }
+ data.mColorRange = aBuffer.mColorRange;
+ data.mChromaSubsampling = aBuffer.mChromaSubsampling;
+ return data;
+}
+
+/* static */
+MediaResult VideoData::SetVideoDataToImage(PlanarYCbCrImage* aVideoImage,
+ const VideoInfo& aInfo,
+ const YCbCrBuffer& aBuffer,
+ const IntRect& aPicture,
+ bool aCopyData) {
+ MOZ_ASSERT(aVideoImage);
+
+ PlanarYCbCrData data = ConstructPlanarYCbCrData(aInfo, aBuffer, aPicture);
+
+ if (aCopyData) {
+ return MediaResult(aVideoImage->CopyData(data),
+ RESULT_DETAIL("Failed to copy image data"));
+ }
+ return MediaResult(aVideoImage->AdoptData(data),
+ RESULT_DETAIL("Failed to adopt image data"));
+}
+
+/* static */
+Result<already_AddRefed<VideoData>, MediaResult> VideoData::CreateAndCopyData(
+ const VideoInfo& aInfo, ImageContainer* aContainer, int64_t aOffset,
+ const TimeUnit& aTime, const TimeUnit& aDuration,
+ const YCbCrBuffer& aBuffer, bool aKeyframe, const TimeUnit& aTimecode,
+ const IntRect& aPicture, layers::KnowsCompositor* aAllocator) {
+ if (!aContainer) {
+ // Create a dummy VideoData with no image. This gives us something to
+ // send to media streams if necessary.
+ RefPtr<VideoData> v(new VideoData(aOffset, aTime, aDuration, aKeyframe,
+ aTimecode, aInfo.mDisplay, 0));
+ return v.forget();
+ }
+
+ if (MediaResult r = ValidateBufferAndPicture(aBuffer, aPicture);
+ NS_FAILED(r)) {
+ return Err(r);
+ }
+
+ PerformanceRecorder<PlaybackStage> perfRecorder(MediaStage::CopyDecodedVideo,
+ aInfo.mImage.height);
+ RefPtr<VideoData> v(new VideoData(aOffset, aTime, aDuration, aKeyframe,
+ aTimecode, aInfo.mDisplay, 0));
+
+ // Currently our decoder only knows how to output to ImageFormat::PLANAR_YCBCR
+ // format.
+#if XP_MACOSX
+ if (aAllocator && aAllocator->GetWebRenderCompositorType() !=
+ layers::WebRenderCompositor::SOFTWARE) {
+ RefPtr<layers::MacIOSurfaceImage> ioImage =
+ new layers::MacIOSurfaceImage(nullptr);
+ PlanarYCbCrData data = ConstructPlanarYCbCrData(aInfo, aBuffer, aPicture);
+ if (ioImage->SetData(aContainer, data)) {
+ v->mImage = ioImage;
+ perfRecorder.Record();
+ return v.forget();
+ }
+ }
+#endif
+ if (!v->mImage) {
+ v->mImage = aContainer->CreatePlanarYCbCrImage();
+ }
+
+ if (!v->mImage) {
+ // TODO: Should other error like NS_ERROR_UNEXPECTED be used here to
+ // distinguish this error from the NS_ERROR_OUT_OF_MEMORY below?
+ return Err(MediaResult(NS_ERROR_OUT_OF_MEMORY,
+ "Failed to create a PlanarYCbCrImage"));
+ }
+ NS_ASSERTION(v->mImage->GetFormat() == ImageFormat::PLANAR_YCBCR,
+ "Wrong format?");
+ PlanarYCbCrImage* videoImage = v->mImage->AsPlanarYCbCrImage();
+ MOZ_ASSERT(videoImage);
+
+ if (MediaResult r = VideoData::SetVideoDataToImage(
+ videoImage, aInfo, aBuffer, aPicture, true /* aCopyData */);
+ NS_FAILED(r)) {
+ return Err(r);
+ }
+
+ perfRecorder.Record();
+ return v.forget();
+}
+
+/* static */
+already_AddRefed<VideoData> VideoData::CreateAndCopyData(
+ const VideoInfo& aInfo, ImageContainer* aContainer, int64_t aOffset,
+ const TimeUnit& aTime, const TimeUnit& aDuration,
+ const YCbCrBuffer& aBuffer, const YCbCrBuffer::Plane& aAlphaPlane,
+ bool aKeyframe, const TimeUnit& aTimecode, const IntRect& aPicture) {
+ if (!aContainer) {
+ // Create a dummy VideoData with no image. This gives us something to
+ // send to media streams if necessary.
+ RefPtr<VideoData> v(new VideoData(aOffset, aTime, aDuration, aKeyframe,
+ aTimecode, aInfo.mDisplay, 0));
+ return v.forget();
+ }
+
+ if (MediaResult r = ValidateBufferAndPicture(aBuffer, aPicture);
+ NS_FAILED(r)) {
+ NS_ERROR(r.Message().get());
+ return nullptr;
+ }
+
+ RefPtr<VideoData> v(new VideoData(aOffset, aTime, aDuration, aKeyframe,
+ aTimecode, aInfo.mDisplay, 0));
+
+ // Convert from YUVA to BGRA format on the software side.
+ RefPtr<layers::SharedRGBImage> videoImage =
+ aContainer->CreateSharedRGBImage();
+ v->mImage = videoImage;
+
+ if (!v->mImage) {
+ return nullptr;
+ }
+ if (!videoImage->Allocate(
+ IntSize(aBuffer.mPlanes[0].mWidth, aBuffer.mPlanes[0].mHeight),
+ SurfaceFormat::B8G8R8A8)) {
+ return nullptr;
+ }
+
+ RefPtr<layers::TextureClient> texture =
+ videoImage->GetTextureClient(/* aKnowsCompositor */ nullptr);
+ if (!texture) {
+ NS_WARNING("Failed to allocate TextureClient");
+ return nullptr;
+ }
+
+ layers::TextureClientAutoLock autoLock(texture,
+ layers::OpenMode::OPEN_WRITE_ONLY);
+ if (!autoLock.Succeeded()) {
+ NS_WARNING("Failed to lock TextureClient");
+ return nullptr;
+ }
+
+ layers::MappedTextureData buffer;
+ if (!texture->BorrowMappedData(buffer)) {
+ NS_WARNING("Failed to borrow mapped data");
+ return nullptr;
+ }
+
+ // The naming convention for libyuv and associated utils is word-order.
+ // The naming convention in the gfx stack is byte-order.
+ ConvertI420AlphaToARGB(aBuffer.mPlanes[0].mData, aBuffer.mPlanes[1].mData,
+ aBuffer.mPlanes[2].mData, aAlphaPlane.mData,
+ AssertedCast<int>(aBuffer.mPlanes[0].mStride),
+ AssertedCast<int>(aBuffer.mPlanes[1].mStride),
+ buffer.data, buffer.stride, buffer.size.width,
+ buffer.size.height);
+
+ return v.forget();
+}
+
+/* static */
+already_AddRefed<VideoData> VideoData::CreateFromImage(
+ const IntSize& aDisplay, int64_t aOffset, const TimeUnit& aTime,
+ const TimeUnit& aDuration, const RefPtr<Image>& aImage, bool aKeyframe,
+ const TimeUnit& aTimecode) {
+ RefPtr<VideoData> v(new VideoData(aOffset, aTime, aDuration, aKeyframe,
+ aTimecode, aDisplay, 0));
+ v->mImage = aImage;
+ return v.forget();
+}
+
+nsCString VideoData::ToString() const {
+ std::array ImageFormatStrings = {
+ "PLANAR_YCBCR",
+ "NV_IMAGE",
+ "SHARED_RGB",
+ "MOZ2D_SURFACE",
+ "MAC_IOSURFACE",
+ "SURFACE_TEXTURE",
+ "D3D9_RGB32_TEXTURE",
+ "OVERLAY_IMAGE",
+ "D3D11_SHARE_HANDLE_TEXTURE",
+ "D3D11_TEXTURE_IMF_SAMPLE",
+ "TEXTURE_WRAPPER",
+ "D3D11_YCBCR_IMAGE",
+ "GPU_VIDEO",
+ "DMABUF",
+ "DCOMP_SURFACE",
+ };
+
+ nsCString rv;
+ rv.AppendPrintf(
+ "VideoFrame [%s,%s] [%dx%d] format: %s", mTime.ToString().get(),
+ mDuration.ToString().get(), mDisplay.Width(), mDisplay.Height(),
+ mImage ? ImageFormatStrings[static_cast<int>(mImage->GetFormat())]
+ : "null");
+ return rv;
+}
+
+MediaRawData::MediaRawData()
+ : MediaData(Type::RAW_DATA), mCrypto(mCryptoInternal) {}
+
+MediaRawData::MediaRawData(const uint8_t* aData, size_t aSize)
+ : MediaData(Type::RAW_DATA),
+ mCrypto(mCryptoInternal),
+ mBuffer(aData, aSize) {}
+
+MediaRawData::MediaRawData(const uint8_t* aData, size_t aSize,
+ const uint8_t* aAlphaData, size_t aAlphaSize)
+ : MediaData(Type::RAW_DATA),
+ mCrypto(mCryptoInternal),
+ mBuffer(aData, aSize),
+ mAlphaBuffer(aAlphaData, aAlphaSize) {}
+
+MediaRawData::MediaRawData(AlignedByteBuffer&& aData)
+ : MediaData(Type::RAW_DATA),
+ mCrypto(mCryptoInternal),
+ mBuffer(std::move(aData)) {}
+
+MediaRawData::MediaRawData(AlignedByteBuffer&& aData,
+ AlignedByteBuffer&& aAlphaData)
+ : MediaData(Type::RAW_DATA),
+ mCrypto(mCryptoInternal),
+ mBuffer(std::move(aData)),
+ mAlphaBuffer(std::move(aAlphaData)) {}
+
+already_AddRefed<MediaRawData> MediaRawData::Clone() const {
+ int32_t sampleHeight = 0;
+ if (mTrackInfo && mTrackInfo->GetAsVideoInfo()) {
+ sampleHeight = mTrackInfo->GetAsVideoInfo()->mImage.height;
+ }
+ PerformanceRecorder<PlaybackStage> perfRecorder(MediaStage::CopyDemuxedData,
+ sampleHeight);
+ RefPtr<MediaRawData> s = new MediaRawData;
+ s->mTimecode = mTimecode;
+ s->mTime = mTime;
+ s->mDuration = mDuration;
+ s->mOffset = mOffset;
+ s->mKeyframe = mKeyframe;
+ s->mExtraData = mExtraData;
+ s->mCryptoInternal = mCryptoInternal;
+ s->mTrackInfo = mTrackInfo;
+ s->mEOS = mEOS;
+ s->mOriginalPresentationWindow = mOriginalPresentationWindow;
+ if (!s->mBuffer.Append(mBuffer.Data(), mBuffer.Length())) {
+ return nullptr;
+ }
+ if (!s->mAlphaBuffer.Append(mAlphaBuffer.Data(), mAlphaBuffer.Length())) {
+ return nullptr;
+ }
+ perfRecorder.Record();
+ return s.forget();
+}
+
+MediaRawData::~MediaRawData() = default;
+
+size_t MediaRawData::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+ size_t size = aMallocSizeOf(this);
+ size += mBuffer.SizeOfExcludingThis(aMallocSizeOf);
+ return size;
+}
+
+UniquePtr<MediaRawDataWriter> MediaRawData::CreateWriter() {
+ UniquePtr<MediaRawDataWriter> p(new MediaRawDataWriter(this));
+ return p;
+}
+
+MediaRawDataWriter::MediaRawDataWriter(MediaRawData* aMediaRawData)
+ : mCrypto(aMediaRawData->mCryptoInternal), mTarget(aMediaRawData) {}
+
+bool MediaRawDataWriter::SetSize(size_t aSize) {
+ return mTarget->mBuffer.SetLength(aSize);
+}
+
+bool MediaRawDataWriter::Prepend(const uint8_t* aData, size_t aSize) {
+ return mTarget->mBuffer.Prepend(aData, aSize);
+}
+
+bool MediaRawDataWriter::Append(const uint8_t* aData, size_t aSize) {
+ return mTarget->mBuffer.Append(aData, aSize);
+}
+
+bool MediaRawDataWriter::Replace(const uint8_t* aData, size_t aSize) {
+ return mTarget->mBuffer.Replace(aData, aSize);
+}
+
+void MediaRawDataWriter::Clear() { mTarget->mBuffer.Clear(); }
+
+uint8_t* MediaRawDataWriter::Data() { return mTarget->mBuffer.Data(); }
+
+size_t MediaRawDataWriter::Size() { return mTarget->Size(); }
+
+void MediaRawDataWriter::PopFront(size_t aSize) {
+ mTarget->mBuffer.PopFront(aSize);
+}
+
+const char* CryptoSchemeToString(const CryptoScheme& aScheme) {
+ switch (aScheme) {
+ case CryptoScheme::None:
+ return "None";
+ case CryptoScheme::Cenc:
+ return "Cenc";
+ case CryptoScheme::Cbcs:
+ return "Cbcs";
+ default:
+ MOZ_ASSERT_UNREACHABLE();
+ return "";
+ }
+}
+
+} // namespace mozilla