зеркало из https://github.com/mozilla/gecko-dev.git
109 строки
3.6 KiB
C++
109 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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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 "mozilla/layers/ImageBridgeChild.h"
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#include "nsDebug.h"
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#include "ImageContainer.h"
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#include "GrallocImages.h"
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using namespace mozilla::ipc;
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using namespace android;
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namespace mozilla {
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namespace layers {
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GrallocPlanarYCbCrImage::GrallocPlanarYCbCrImage()
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: PlanarYCbCrImage(nullptr)
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{
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mFormat = GRALLOC_PLANAR_YCBCR;
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}
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GrallocPlanarYCbCrImage::~GrallocPlanarYCbCrImage()
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{
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ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
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ibc->DeallocSurfaceDescriptorGralloc(mSurfaceDescriptor);
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}
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void
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GrallocPlanarYCbCrImage::SetData(const Data& aData)
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{
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NS_PRECONDITION(aData.mYSize.width % 2 == 0, "Image should have even width");
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NS_PRECONDITION(aData.mYSize.height % 2 == 0, "Image should have even height");
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NS_PRECONDITION(aData.mYStride % 16 == 0, "Image should have stride of multiple of 16 pixels");
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mData = aData;
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mSize = aData.mPicSize;
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if (mSurfaceDescriptor.type() == SurfaceDescriptor::T__None) {
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ImageBridgeChild *ibc = ImageBridgeChild::GetSingleton();
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ibc->AllocSurfaceDescriptorGralloc(aData.mYSize,
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HAL_PIXEL_FORMAT_YV12,
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GraphicBuffer::USAGE_SW_READ_OFTEN |
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GraphicBuffer::USAGE_SW_WRITE_OFTEN |
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GraphicBuffer::USAGE_HW_TEXTURE,
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&mSurfaceDescriptor);
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}
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sp<GraphicBuffer> graphicBuffer =
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GrallocBufferActor::GetFrom(mSurfaceDescriptor.get_SurfaceDescriptorGralloc());
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if (!graphicBuffer.get()) {
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return;
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}
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if (graphicBuffer->initCheck() != NO_ERROR) {
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return;
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}
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void* vaddr;
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if (graphicBuffer->lock(GraphicBuffer::USAGE_SW_WRITE_OFTEN,
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&vaddr) != OK) {
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return;
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}
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uint8_t* yChannel = static_cast<uint8_t*>(vaddr);
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gfxIntSize ySize = gfxIntSize(aData.mYSize.width,
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aData.mYSize.height);
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int32_t yStride = graphicBuffer->getStride();
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uint8_t* vChannel = yChannel + (yStride * ySize.height);
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gfxIntSize uvSize = gfxIntSize(ySize.width / 2,
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ySize.height / 2);
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// Align to 16 bytes boundary
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int32_t uvStride = ((yStride / 2) + 15) & ~0x0F;
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uint8_t* uChannel = vChannel + (uvStride * uvSize.height);
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// Memory outside of the image width may not writable. If the stride
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// equals to the image width then we can use only one copy.
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if (yStride == mData.mYStride &&
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yStride == ySize.width) {
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memcpy(yChannel, mData.mYChannel, yStride * ySize.height);
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} else {
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for (int i = 0; i < ySize.height; i++) {
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memcpy(yChannel + i * yStride,
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mData.mYChannel + i * mData.mYStride,
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ySize.width);
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}
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}
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if (uvStride == mData.mCbCrStride &&
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uvStride == uvSize.width) {
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memcpy(uChannel, mData.mCbChannel, uvStride * uvSize.height);
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memcpy(vChannel, mData.mCrChannel, uvStride * uvSize.height);
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} else {
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for (int i = 0; i < uvSize.height; i++) {
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memcpy(uChannel + i * uvStride,
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mData.mCbChannel + i * mData.mCbCrStride,
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uvSize.width);
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memcpy(vChannel + i * uvStride,
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mData.mCrChannel + i * mData.mCbCrStride,
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uvSize.width);
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}
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}
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graphicBuffer->unlock();
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}
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} // namespace layers
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} // namespace mozilla
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