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/* -*- 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 "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()
{}
void
VideoFrame::SetNull() {
mImage = nullptr;
mIntrinsicSize = gfx::IntSize(0, 0);
mPrincipalHandle = PRINCIPAL_HANDLE_NONE;
}
void
VideoFrame::TakeFrom(VideoFrame* aFrame)
{
mImage = aFrame->mImage.forget();
mIntrinsicSize = aFrame->mIntrinsicSize;
mForceBlack = aFrame->GetForceBlack();
mPrincipalHandle = aFrame->mPrincipalHandle;
}
/* static */ already_AddRefed<Image>
VideoFrame::CreateBlackImage(const gfx::IntSize& aSize)
{
RefPtr<ImageContainer> container =
LayerManager::CreateImageContainer(ImageContainer::ASYNCHRONOUS);
RefPtr<PlanarYCbCrImage> image = container->CreatePlanarYCbCrImage();
if (!image) {
MOZ_ASSERT(false);
return nullptr;
}
int len = ((aSize.width * aSize.height) * 3 / 2);
// Generate a black image.
auto frame = MakeUnique<uint8_t[]>(len);
int y = aSize.width * aSize.height;
// Fill Y plane.
memset(frame.get(), 0x10, y);
// Fill Cb/Cr planes.
memset(frame.get() + y, 0x80, (len - y));
const uint8_t lumaBpp = 8;
const uint8_t chromaBpp = 4;
layers::PlanarYCbCrData data;
data.mYChannel = frame.get();
data.mYSize = gfx::IntSize(aSize.width, aSize.height);
data.mYStride = (int32_t) (aSize.width * lumaBpp / 8.0);
data.mCbCrStride = (int32_t) (aSize.width * chromaBpp / 8.0);
data.mCbChannel = frame.get() + aSize.height * data.mYStride;
data.mCrChannel = data.mCbChannel + aSize.height * data.mCbCrStride / 2;
data.mCbCrSize = gfx::IntSize(aSize.width / 2, aSize.height / 2);
data.mPicX = 0;
data.mPicY = 0;
data.mPicSize = gfx::IntSize(aSize.width, aSize.height);
data.mStereoMode = StereoMode::MONO;
// Copies data, so we can free data.
if (!image->CopyData(data)) {
MOZ_ASSERT(false);
return nullptr;
}
return image.forget();
}
VideoChunk::VideoChunk()
{}
VideoChunk::~VideoChunk()
{}
void
VideoSegment::AppendFrame(already_AddRefed<Image>&& aImage,
StreamTime aDuration,
const IntSize& aIntrinsicSize,
const PrincipalHandle& aPrincipalHandle,
bool aForceBlack,
TimeStamp aTimeStamp)
{
VideoChunk* chunk = AppendChunk(aDuration);
chunk->mTimeStamp = aTimeStamp;
VideoFrame frame(aImage, aIntrinsicSize);
frame.SetForceBlack(aForceBlack);
frame.SetPrincipalHandle(aPrincipalHandle);
chunk->mFrame.TakeFrom(&frame);
}
VideoSegment::VideoSegment()
: MediaSegmentBase<VideoSegment, VideoChunk>(VIDEO)
{}
VideoSegment::~VideoSegment()
{}
} // namespace mozilla
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