зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
3.3 KiB
C++
118 строки
3.3 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 "Layers.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), mIntrinsicSize(aIntrinsicSize), mForceBlack(false),
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mPrincipalHandle(PRINCIPAL_HANDLE_NONE)
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{}
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VideoFrame::VideoFrame()
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: mIntrinsicSize(0, 0), mForceBlack(false), mPrincipalHandle(PRINCIPAL_HANDLE_NONE)
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{}
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VideoFrame::~VideoFrame()
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{}
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void
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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
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VideoFrame::TakeFrom(VideoFrame* aFrame)
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{
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mImage = aFrame->mImage.forget();
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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 */ already_AddRefed<Image>
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VideoFrame::CreateBlackImage(const gfx::IntSize& aSize)
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{
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RefPtr<ImageContainer> container =
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LayerManager::CreateImageContainer(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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int len = ((aSize.width * aSize.height) * 3 / 2);
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// Generate a black image.
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auto frame = MakeUnique<uint8_t[]>(len);
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int y = aSize.width * aSize.height;
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// Fill Y plane.
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memset(frame.get(), 0x10, y);
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// Fill Cb/Cr planes.
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memset(frame.get() + y, 0x80, (len - y));
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const uint8_t lumaBpp = 8;
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const uint8_t chromaBpp = 4;
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layers::PlanarYCbCrData data;
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data.mYChannel = frame.get();
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data.mYSize = gfx::IntSize(aSize.width, aSize.height);
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data.mYStride = (int32_t) (aSize.width * lumaBpp / 8.0);
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data.mCbCrStride = (int32_t) (aSize.width * chromaBpp / 8.0);
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data.mCbChannel = frame.get() + aSize.height * data.mYStride;
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data.mCrChannel = data.mCbChannel + aSize.height * data.mCbCrStride / 2;
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data.mCbCrSize = gfx::IntSize(aSize.width / 2, aSize.height / 2);
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data.mPicX = 0;
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data.mPicY = 0;
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data.mPicSize = gfx::IntSize(aSize.width, aSize.height);
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data.mStereoMode = StereoMode::MONO;
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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
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VideoSegment::AppendFrame(already_AddRefed<Image>&& aImage,
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StreamTime aDuration,
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const IntSize& aIntrinsicSize,
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const PrincipalHandle& aPrincipalHandle,
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bool aForceBlack,
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TimeStamp aTimeStamp)
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{
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VideoChunk* chunk = AppendChunk(aDuration);
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chunk->mTimeStamp = aTimeStamp;
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VideoFrame frame(aImage, aIntrinsicSize);
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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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{}
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VideoSegment::VideoSegment(VideoSegment&& aSegment)
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: MediaSegmentBase<VideoSegment, VideoChunk>(std::move(aSegment))
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{}
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VideoSegment::~VideoSegment()
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{}
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} // namespace mozilla
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