зеркало из https://github.com/mozilla/gecko-dev.git
109 строки
3.4 KiB
C++
109 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "VideoSegment.h"
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#include "gfx2DGlue.h"
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#include "ImageContainer.h"
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#include "VideoUtils.h"
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#include "mozilla/UniquePtr.h"
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namespace mozilla {
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using namespace layers;
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VideoFrame::VideoFrame(already_AddRefed<Image> aImage,
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const gfx::IntSize& aIntrinsicSize)
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: mImage(aImage),
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mIntrinsicSize(aIntrinsicSize),
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mForceBlack(false),
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mPrincipalHandle(PRINCIPAL_HANDLE_NONE) {}
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VideoFrame::VideoFrame()
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: mIntrinsicSize(0, 0),
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mForceBlack(false),
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mPrincipalHandle(PRINCIPAL_HANDLE_NONE) {}
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VideoFrame::~VideoFrame() = default;
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void VideoFrame::SetNull() {
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mImage = nullptr;
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mIntrinsicSize = gfx::IntSize(0, 0);
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mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
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}
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void VideoFrame::TakeFrom(VideoFrame* aFrame) {
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mImage = std::move(aFrame->mImage);
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mIntrinsicSize = aFrame->mIntrinsicSize;
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mForceBlack = aFrame->GetForceBlack();
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mPrincipalHandle = aFrame->mPrincipalHandle;
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}
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/* static */
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already_AddRefed<Image> VideoFrame::CreateBlackImage(
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const gfx::IntSize& aSize) {
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RefPtr<ImageContainer> container =
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MakeAndAddRef<ImageContainer>(ImageContainer::ASYNCHRONOUS);
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RefPtr<PlanarYCbCrImage> image = container->CreatePlanarYCbCrImage();
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if (!image) {
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return nullptr;
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}
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gfx::IntSize cbcrSize((aSize.width + 1) / 2, (aSize.height + 1) / 2);
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int yLen = aSize.width * aSize.height;
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int cbcrLen = cbcrSize.width * cbcrSize.height;
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// Generate a black image.
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auto frame = MakeUnique<uint8_t[]>(yLen + 2 * cbcrLen);
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// Fill Y plane.
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memset(frame.get(), 0x10, yLen);
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// Fill Cb/Cr planes.
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memset(frame.get() + yLen, 0x80, 2 * cbcrLen);
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layers::PlanarYCbCrData data;
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data.mYChannel = frame.get();
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data.mYStride = aSize.width;
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data.mCbCrStride = cbcrSize.width;
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data.mCbChannel = frame.get() + yLen;
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data.mCrChannel = data.mCbChannel + cbcrLen;
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data.mPictureRect = gfx::IntRect(0, 0, aSize.width, aSize.height);
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data.mStereoMode = StereoMode::MONO;
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data.mYUVColorSpace = gfx::YUVColorSpace::BT601;
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// This could be made FULL once bug 1568745 is complete. A black pixel being
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// 0x00, 0x80, 0x80
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data.mColorRange = gfx::ColorRange::LIMITED;
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data.mChromaSubsampling = gfx::ChromaSubsampling::HALF_WIDTH_AND_HEIGHT;
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// Copies data, so we can free data.
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if (!image->CopyData(data)) {
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return nullptr;
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}
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return image.forget();
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}
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void VideoSegment::AppendFrame(already_AddRefed<Image>&& aImage,
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const IntSize& aIntrinsicSize,
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const PrincipalHandle& aPrincipalHandle,
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bool aForceBlack, TimeStamp aTimeStamp) {
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VideoChunk* chunk = AppendChunk(0);
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chunk->mTimeStamp = aTimeStamp;
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VideoFrame frame(std::move(aImage), aIntrinsicSize);
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MOZ_ASSERT_IF(!IsNull(), !aTimeStamp.IsNull());
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frame.SetForceBlack(aForceBlack);
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frame.SetPrincipalHandle(aPrincipalHandle);
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chunk->mFrame.TakeFrom(&frame);
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}
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VideoSegment::VideoSegment()
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: MediaSegmentBase<VideoSegment, VideoChunk>(VIDEO) {}
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VideoSegment::VideoSegment(VideoSegment&& aSegment)
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: MediaSegmentBase<VideoSegment, VideoChunk>(std::move(aSegment)) {}
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VideoSegment::~VideoSegment() = default;
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} // namespace mozilla
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