pjs/gfx/layers/ImageLayers.cpp

276 строки
7.4 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Corporation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Bas Schouten <bschouten@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/ipc/Shmem.h"
#include "ImageLayers.h"
#include "gfxImageSurface.h"
#include "yuv_convert.h"
#ifdef XP_MACOSX
#include "nsCoreAnimationSupport.h"
#endif
using namespace mozilla::ipc;
namespace mozilla {
namespace layers {
already_AddRefed<Image>
ImageFactory::CreateImage(const Image::Format *aFormats,
PRUint32 aNumFormats,
const gfxIntSize &,
BufferRecycleBin *aRecycleBin)
{
if (!aNumFormats) {
return nsnull;
}
nsRefPtr<Image> img;
if (FormatInList(aFormats, aNumFormats, Image::PLANAR_YCBCR)) {
img = new PlanarYCbCrImage(aRecycleBin);
} else if (FormatInList(aFormats, aNumFormats, Image::CAIRO_SURFACE)) {
img = new CairoImage();
#ifdef XP_MACOSX
} else if (FormatInList(aFormats, aNumFormats, Image::MAC_IO_SURFACE)) {
img = new MacIOSurfaceImage();
#endif
}
return img.forget();
}
BufferRecycleBin::BufferRecycleBin()
: mLock("mozilla.layers.BufferRecycleBin.mLock")
{
}
void
BufferRecycleBin::RecycleBuffer(PRUint8* aBuffer, PRUint32 aSize)
{
MutexAutoLock lock(mLock);
if (!mRecycledBuffers.IsEmpty() && aSize != mRecycledBufferSize) {
mRecycledBuffers.Clear();
}
mRecycledBufferSize = aSize;
mRecycledBuffers.AppendElement(aBuffer);
}
PRUint8*
BufferRecycleBin::GetBuffer(PRUint32 aSize)
{
MutexAutoLock lock(mLock);
if (mRecycledBuffers.IsEmpty() || mRecycledBufferSize != aSize)
return new PRUint8[aSize];
PRUint32 last = mRecycledBuffers.Length() - 1;
PRUint8* result = mRecycledBuffers[last].forget();
mRecycledBuffers.RemoveElementAt(last);
return result;
}
ImageContainer::~ImageContainer()
{
}
already_AddRefed<Image>
ImageContainer::CreateImage(const Image::Format *aFormats,
PRUint32 aNumFormats)
{
ReentrantMonitorAutoEnter mon(mReentrantMonitor);
return mImageFactory->CreateImage(aFormats, aNumFormats, mScaleHint, mRecycleBin);
}
void
ImageContainer::SetCurrentImage(Image *aImage)
{
ReentrantMonitorAutoEnter mon(mReentrantMonitor);
mActiveImage = aImage;
CurrentImageChanged();
}
already_AddRefed<gfxASurface>
ImageContainer::GetCurrentAsSurface(gfxIntSize *aSize)
{
ReentrantMonitorAutoEnter mon(mReentrantMonitor);
if (!mActiveImage) {
return nsnull;
}
*aSize = mActiveImage->GetSize();
return mActiveImage->GetAsSurface();
}
gfxIntSize
ImageContainer::GetCurrentSize()
{
ReentrantMonitorAutoEnter mon(mReentrantMonitor);
if (!mActiveImage) {
return gfxIntSize(0,0);
}
return mActiveImage->GetSize();
}
PlanarYCbCrImage::PlanarYCbCrImage(BufferRecycleBin *aRecycleBin)
: Image(nsnull, PLANAR_YCBCR)
, mBufferSize(0)
, mRecycleBin(aRecycleBin)
{
}
PlanarYCbCrImage::~PlanarYCbCrImage()
{
if (mBuffer) {
mRecycleBin->RecycleBuffer(mBuffer.forget(), mBufferSize);
}
}
PRUint8*
PlanarYCbCrImage::AllocateBuffer(PRUint32 aSize)
{
return mRecycleBin->GetBuffer(aSize);
}
void
PlanarYCbCrImage::CopyData(const Data& aData)
{
mData = aData;
mData.mYStride = mData.mYSize.width;
mData.mCbCrStride = mData.mCbCrSize.width;
// update buffer size
mBufferSize = mData.mCbCrStride * mData.mCbCrSize.height * 2 +
mData.mYStride * mData.mYSize.height;
// get new buffer
mBuffer = AllocateBuffer(mBufferSize);
if (!mBuffer)
return;
mData.mYChannel = mBuffer;
mData.mCbChannel = mData.mYChannel + mData.mYStride * mData.mYSize.height;
mData.mCrChannel = mData.mCbChannel + mData.mCbCrStride * mData.mCbCrSize.height;
for (int i = 0; i < mData.mYSize.height; i++) {
memcpy(mData.mYChannel + i * mData.mYStride,
aData.mYChannel + i * aData.mYStride,
mData.mYStride);
}
for (int i = 0; i < mData.mCbCrSize.height; i++) {
memcpy(mData.mCbChannel + i * mData.mCbCrStride,
aData.mCbChannel + i * aData.mCbCrStride,
mData.mCbCrStride);
memcpy(mData.mCrChannel + i * mData.mCbCrStride,
aData.mCrChannel + i * aData.mCbCrStride,
mData.mCbCrStride);
}
mSize = aData.mPicSize;
}
void
PlanarYCbCrImage::SetData(const Data &aData)
{
CopyData(aData);
}
already_AddRefed<gfxASurface>
PlanarYCbCrImage::GetAsSurface()
{
if (mSurface) {
nsRefPtr<gfxASurface> result = mSurface.get();
return result.forget();
}
nsRefPtr<gfxImageSurface> imageSurface =
new gfxImageSurface(mSize, gfxASurface::ImageFormatRGB24);
gfx::YUVType type =
gfx::TypeFromSize(mData.mYSize.width,
mData.mYSize.height,
mData.mCbCrSize.width,
mData.mCbCrSize.height);
// Convert from YCbCr to RGB now
gfx::ConvertYCbCrToRGB32(mData.mYChannel,
mData.mCbChannel,
mData.mCrChannel,
imageSurface->Data(),
mData.mPicX,
mData.mPicY,
mData.mPicSize.width,
mData.mPicSize.height,
mData.mYStride,
mData.mCbCrStride,
imageSurface->Stride(),
type);
mSurface = imageSurface;
return imageSurface.forget().get();
}
#ifdef XP_MACOSX
void
MacIOSurfaceImage::SetData(const Data& aData)
{
mIOSurface = nsIOSurface::LookupSurface(aData.mIOSurface->GetIOSurfaceID());
mSize = gfxIntSize(mIOSurface->GetWidth(), mIOSurface->GetHeight());
}
already_AddRefed<gfxASurface>
MacIOSurfaceImage::GetAsSurface()
{
return mIOSurface->GetAsSurface();
}
void
MacIOSurfaceImage::Update(ImageContainer* aContainer)
{
if (mUpdateCallback) {
mUpdateCallback(aContainer, mPluginInstanceOwner);
}
}
#endif
}
}