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/*
Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "ShareableSurface.h"
#include "CoordinatedGraphicsArgumentCoders.h"
#include "GraphicsContext.h"
#include "WebCoreArgumentCoders.h"
#include <WebCore/GraphicsSurfaceToken.h>
#if USE(TEXTURE_MAPPER)
#include "TextureMapperGL.h"
#endif
using namespace WebCore;
namespace WebKit {
ShareableSurface::Handle::Handle()
{
}
void ShareableSurface::Handle::encode(CoreIPC::ArgumentEncoder& encoder) const
{
encoder.encode(m_size);
encoder.encode(m_flags);
#if USE(GRAPHICS_SURFACE)
encoder.encode(m_graphicsSurfaceToken);
if (m_graphicsSurfaceToken.isValid())
return;
#endif
encoder.encode(m_bitmapHandle);
}
bool ShareableSurface::Handle::decode(CoreIPC::ArgumentDecoder* decoder, Handle& handle)
{
if (!decoder->decode(handle.m_size))
return false;
if (!decoder->decode(handle.m_flags))
return false;
#if USE(GRAPHICS_SURFACE)
if (!decoder->decode(handle.m_graphicsSurfaceToken))
return false;
if (handle.m_graphicsSurfaceToken.isValid())
return true;
#endif
if (!decoder->decode(handle.m_bitmapHandle))
return false;
return true;
}
PassRefPtr<ShareableSurface> ShareableSurface::create(const IntSize& size, ShareableBitmap::Flags flags, Hints hints)
{
#if USE(GRAPHICS_SURFACE)
if (hints & SupportsGraphicsSurface) {
RefPtr<ShareableSurface> surface = createWithSurface(size, flags);
if (surface)
return surface.release();
}
#endif
UNUSED_PARAM(hints);
return create(size, flags, ShareableBitmap::createShareable(size, flags));
}
#if USE(GRAPHICS_SURFACE)
PassRefPtr<ShareableSurface> ShareableSurface::createWithSurface(const IntSize& size, ShareableBitmap::Flags flags)
{
GraphicsSurface::Flags surfaceFlags =
GraphicsSurface::SupportsSoftwareWrite
| GraphicsSurface::SupportsCopyToTexture
| GraphicsSurface::SupportsSharing;
if (flags & ShareableBitmap::SupportsAlpha)
surfaceFlags |= GraphicsSurface::SupportsAlpha;
// This might return null, if the system is unable to provide a new graphics surface.
// In that case, this function would return null and allow falling back to ShareableBitmap.
RefPtr<GraphicsSurface> surface = GraphicsSurface::create(size, surfaceFlags);
if (!surface)
return 0;
ASSERT(surface);
return adoptRef(new ShareableSurface(size, flags, surface.release()));
}
#endif
PassOwnPtr<WebCore::GraphicsContext> ShareableSurface::createGraphicsContext(const IntRect& rect)
{
#if USE(GRAPHICS_SURFACE)
if (isBackedByGraphicsSurface())
return m_graphicsSurface->beginPaint(rect, 0 /* Write without retaining pixels*/);
#endif
ASSERT(m_bitmap);
OwnPtr<GraphicsContext> graphicsContext = m_bitmap->createGraphicsContext();
graphicsContext->clip(rect);
graphicsContext->translate(rect.x(), rect.y());
return graphicsContext.release();
}
PassRefPtr<ShareableSurface> ShareableSurface::create(const IntSize& size, ShareableBitmap::Flags flags, PassRefPtr<ShareableBitmap> bitmap)
{
return adoptRef(new ShareableSurface(size, flags, bitmap));
}
ShareableSurface::ShareableSurface(const IntSize& size, ShareableBitmap::Flags flags, PassRefPtr<ShareableBitmap> bitmap)
: m_size(size)
, m_flags(flags)
, m_bitmap(bitmap)
{
}
#if USE(GRAPHICS_SURFACE)
ShareableSurface::ShareableSurface(const WebCore::IntSize& size, ShareableBitmap::Flags flags, PassRefPtr<WebCore::GraphicsSurface> surface)
: m_size(size)
, m_flags(flags)
, m_graphicsSurface(surface)
{
}
PassRefPtr<ShareableSurface> ShareableSurface::create(const IntSize& size, ShareableBitmap::Flags flags, PassRefPtr<GraphicsSurface> surface)
{
return adoptRef(new ShareableSurface(size, flags, surface));
}
#endif
ShareableSurface::~ShareableSurface()
{
}
PassRefPtr<ShareableSurface> ShareableSurface::create(const Handle& handle)
{
#if USE(GRAPHICS_SURFACE)
if (handle.graphicsSurfaceToken().isValid()) {
RefPtr<GraphicsSurface> surface = GraphicsSurface::create(handle.m_size, handle.m_flags, handle.m_graphicsSurfaceToken);
if (surface)
return adoptRef(new ShareableSurface(handle.m_size, handle.m_flags, PassRefPtr<GraphicsSurface>(surface)));
}
#endif
RefPtr<ShareableBitmap> bitmap = ShareableBitmap::create(handle.m_bitmapHandle);
if (!bitmap)
return 0;
return create(handle.m_size, handle.m_flags, bitmap.release());
}
bool ShareableSurface::createHandle(Handle& handle)
{
handle.m_size = m_size;
handle.m_flags = m_flags;
#if USE(GRAPHICS_SURFACE)
handle.m_graphicsSurfaceToken = m_graphicsSurface ? m_graphicsSurface->exportToken() : GraphicsSurfaceToken();
if (handle.m_graphicsSurfaceToken.isValid())
return true;
#endif
if (!m_bitmap->createHandle(handle.m_bitmapHandle))
return false;
return true;
}
#if USE(TEXTURE_MAPPER)
void ShareableSurface::copyToTexture(PassRefPtr<WebCore::BitmapTexture> passTexture, const IntRect& target, const IntPoint& sourceOffset)
{
RefPtr<BitmapTexture> texture(passTexture);
#if USE(GRAPHICS_SURFACE)
if (isBackedByGraphicsSurface()) {
RefPtr<BitmapTextureGL> textureGL = toBitmapTextureGL(texture.get());
if (textureGL) {
uint32_t textureID = textureGL->id();
uint32_t textureTarget = textureGL->textureTarget();
m_graphicsSurface->copyToGLTexture(textureTarget, textureID, target, sourceOffset);
return;
}
RefPtr<Image> image = m_graphicsSurface->createReadOnlyImage(IntRect(sourceOffset, target.size()));
texture->updateContents(image.get(), target, IntPoint::zero(), BitmapTexture::UpdateCanModifyOriginalImageData);
}
#endif
ASSERT(m_bitmap);
RefPtr<Image> image = m_bitmap->createImage();
texture->updateContents(image.get(), target, sourceOffset, BitmapTexture::UpdateCanModifyOriginalImageData);
return;
}
#endif // USE(TEXTURE_MAPPER)
} // namespace WebKit
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