зеркало из https://github.com/mozilla/gecko-dev.git
110 строки
3.4 KiB
C++
110 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* 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 "VideoSegment.h"
|
|
|
|
#include "gfx2DGlue.h"
|
|
#include "ImageContainer.h"
|
|
#include "Layers.h"
|
|
#include "VideoUtils.h"
|
|
#include "mozilla/UniquePtr.h"
|
|
|
|
namespace mozilla {
|
|
|
|
using namespace layers;
|
|
|
|
VideoFrame::VideoFrame(already_AddRefed<Image> aImage,
|
|
const gfx::IntSize& aIntrinsicSize)
|
|
: mImage(aImage),
|
|
mIntrinsicSize(aIntrinsicSize),
|
|
mForceBlack(false),
|
|
mPrincipalHandle(PRINCIPAL_HANDLE_NONE) {}
|
|
|
|
VideoFrame::VideoFrame()
|
|
: mIntrinsicSize(0, 0),
|
|
mForceBlack(false),
|
|
mPrincipalHandle(PRINCIPAL_HANDLE_NONE) {}
|
|
|
|
VideoFrame::~VideoFrame() = default;
|
|
|
|
void VideoFrame::SetNull() {
|
|
mImage = nullptr;
|
|
mIntrinsicSize = gfx::IntSize(0, 0);
|
|
mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
|
|
}
|
|
|
|
void VideoFrame::TakeFrom(VideoFrame* aFrame) {
|
|
mImage = std::move(aFrame->mImage);
|
|
mIntrinsicSize = aFrame->mIntrinsicSize;
|
|
mForceBlack = aFrame->GetForceBlack();
|
|
mPrincipalHandle = aFrame->mPrincipalHandle;
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<Image> VideoFrame::CreateBlackImage(
|
|
const gfx::IntSize& aSize) {
|
|
RefPtr<ImageContainer> container =
|
|
MakeAndAddRef<ImageContainer>(ImageContainer::ASYNCHRONOUS);
|
|
RefPtr<PlanarYCbCrImage> image = container->CreatePlanarYCbCrImage();
|
|
if (!image) {
|
|
return nullptr;
|
|
}
|
|
|
|
gfx::IntSize cbcrSize((aSize.width + 1) / 2, (aSize.height + 1) / 2);
|
|
int yLen = aSize.width * aSize.height;
|
|
int cbcrLen = cbcrSize.width * cbcrSize.height;
|
|
|
|
// Generate a black image.
|
|
auto frame = MakeUnique<uint8_t[]>(yLen + 2 * cbcrLen);
|
|
// Fill Y plane.
|
|
memset(frame.get(), 0x10, yLen);
|
|
// Fill Cb/Cr planes.
|
|
memset(frame.get() + yLen, 0x80, 2 * cbcrLen);
|
|
|
|
layers::PlanarYCbCrData data;
|
|
data.mYChannel = frame.get();
|
|
data.mYStride = aSize.width;
|
|
data.mCbCrStride = cbcrSize.width;
|
|
data.mCbChannel = frame.get() + yLen;
|
|
data.mCrChannel = data.mCbChannel + cbcrLen;
|
|
data.mPictureRect = gfx::IntRect(0, 0, aSize.width, aSize.height);
|
|
data.mStereoMode = StereoMode::MONO;
|
|
data.mYUVColorSpace = gfx::YUVColorSpace::BT601;
|
|
// This could be made FULL once bug 1568745 is complete. A black pixel being
|
|
// 0x00, 0x80, 0x80
|
|
data.mColorRange = gfx::ColorRange::LIMITED;
|
|
data.mChromaSubsampling = gfx::ChromaSubsampling::HALF_WIDTH_AND_HEIGHT;
|
|
|
|
// Copies data, so we can free data.
|
|
if (!image->CopyData(data)) {
|
|
return nullptr;
|
|
}
|
|
|
|
return image.forget();
|
|
}
|
|
|
|
void VideoSegment::AppendFrame(already_AddRefed<Image>&& aImage,
|
|
const IntSize& aIntrinsicSize,
|
|
const PrincipalHandle& aPrincipalHandle,
|
|
bool aForceBlack, TimeStamp aTimeStamp) {
|
|
VideoChunk* chunk = AppendChunk(0);
|
|
chunk->mTimeStamp = aTimeStamp;
|
|
VideoFrame frame(std::move(aImage), aIntrinsicSize);
|
|
MOZ_ASSERT_IF(!IsNull(), !aTimeStamp.IsNull());
|
|
frame.SetForceBlack(aForceBlack);
|
|
frame.SetPrincipalHandle(aPrincipalHandle);
|
|
chunk->mFrame.TakeFrom(&frame);
|
|
}
|
|
|
|
VideoSegment::VideoSegment()
|
|
: MediaSegmentBase<VideoSegment, VideoChunk>(VIDEO) {}
|
|
|
|
VideoSegment::VideoSegment(VideoSegment&& aSegment)
|
|
: MediaSegmentBase<VideoSegment, VideoChunk>(std::move(aSegment)) {}
|
|
|
|
VideoSegment::~VideoSegment() = default;
|
|
|
|
} // namespace mozilla
|