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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "ImageNode.h"
#include "TypeDefinition.h"
#include "OGLSurface.h"
#include "Player.h"
#include "OffscreenCanvas.h"
#include "../base/Logger.h"
#include "../base/ScopeTimer.h"
#include "../base/XMLHelper.h"
#include "../base/Exception.h"
#include "../base/ObjectCounter.h"
#include "../graphics/Filterfliprgb.h"
#include <iostream>
#include <sstream>
using namespace std;
namespace avg {
void ImageNode::registerType()
{
TypeDefinition def = TypeDefinition("image", "rasternode",
ExportedObject::buildObject<ImageNode>)
.addArg(Arg<UTF8String>("href", "", false, offsetof(ImageNode, m_href)))
.addArg(Arg<string>("compression", "none"));
TypeRegistry::get()->registerType(def);
}
ImageNode::ImageNode(const ArgList& args)
: m_Compression(Image::TEXTURECOMPRESSION_NONE)
{
args.setMembers(this);
m_pImage = ImagePtr(new Image(getSurface(), getMaterial()));
m_Compression = Image::string2compression(args.getArgVal<string>("compression"));
setHRef(m_href);
ObjectCounter::get()->incRef(&typeid(*this));
}
ImageNode::~ImageNode()
{
// XXX: The following assert checks that disconnect(true) has been called.
// However, if connect() has been called but rendering never started,
// disconnect isn't called either.
// AVG_ASSERT(!m_pImage->getCanvas());
ObjectCounter::get()->decRef(&typeid(*this));
}
void ImageNode::connectDisplay()
{
if (m_pImage->getSource() == Image::SCENE) {
checkCanvasValid(m_pImage->getCanvas());
}
m_pImage->moveToGPU();
RasterNode::connectDisplay();
if (m_pImage->getSource() == Image::SCENE) {
m_pImage->getCanvas()->addDependentCanvas(getCanvas());
}
}
void ImageNode::connect(CanvasPtr pCanvas)
{
RasterNode::connect(pCanvas);
checkReload();
}
void ImageNode::disconnect(bool bKill)
{
OffscreenCanvasPtr pCanvas = m_pImage->getCanvas();
if (pCanvas) {
pCanvas->removeDependentCanvas(getCanvas());
}
if (bKill) {
RasterNode::disconnect(bKill);
m_pImage = ImagePtr(new Image(getSurface(), getMaterial()));
m_href = "";
} else {
m_pImage->moveToCPU();
RasterNode::disconnect(bKill);
}
}
const UTF8String& ImageNode::getHRef() const
{
return m_href;
}
void ImageNode::setHRef(const UTF8String& href)
{
m_href = href;
if (m_pImage->getSource() == Image::SCENE && getState() == Node::NS_CANRENDER)
{
m_pImage->getCanvas()->removeDependentCanvas(getCanvas());
}
try {
if (href == "") {
m_pImage->setEmpty();
} else {
checkReload();
}
} catch (const Exception&) {
m_href = "";
m_pImage->setEmpty();
throw;
}
}
const string ImageNode::getCompression() const
{
return Image::compression2String(m_Compression);
}
void ImageNode::setBitmap(BitmapPtr pBmp)
{
if (m_pImage->getSource() == Image::SCENE && getState() == Node::NS_CANRENDER) {
m_pImage->getCanvas()->removeDependentCanvas(getCanvas());
}
m_pImage->setBitmap(pBmp, m_Compression);
if (getState() == Node::NS_CANRENDER) {
newSurface();
}
m_href = "";
setViewport(-32767, -32767, -32767, -32767);
}
static ProfilingZoneID PrerenderProfilingZone("ImageNode::prerender");
void ImageNode::preRender(const VertexArrayPtr& pVA, bool bIsParentActive,
float parentEffectiveOpacity)
{
ScopeTimer timer(PrerenderProfilingZone);
Node::preRender(pVA, bIsParentActive, parentEffectiveOpacity);
if (isVisible()) {
bool bHasCanvas = bool(m_pImage->getCanvas());
if (m_pImage->getSource() != Image::NONE) {
renderFX(getSize(), Pixel32(255, 255, 255, 255), bHasCanvas, bHasCanvas);
}
}
calcVertexArray(pVA);
}
static ProfilingZoneID RenderProfilingZone("ImageNode::render");
void ImageNode::render()
{
ScopeTimer Timer(RenderProfilingZone);
if (m_pImage->getSource() != Image::NONE) {
blt32(getTransform(), getSize(), getEffectiveOpacity(), getBlendMode(),
bool(m_pImage->getCanvas()));
}
}
IntPoint ImageNode::getMediaSize()
{
return m_pImage->getSize();
}
void ImageNode::checkReload()
{
if (isCanvasURL(m_href)) {
if (m_Compression != Image::TEXTURECOMPRESSION_NONE) {
throw Exception(AVG_ERR_UNSUPPORTED,
"Texture compression can't be used with canvas hrefs.");
}
OffscreenCanvasPtr pCanvas = Player::get()->getCanvasFromURL(m_href);
checkCanvasValid(pCanvas);
m_pImage->setCanvas(pCanvas);
if (getState() == NS_CANRENDER) {
pCanvas->addDependentCanvas(getCanvas());
}
newSurface();
} else {
bool bNewImage = Node::checkReload(m_href, m_pImage, m_Compression);
if (bNewImage) {
newSurface();
}
}
setViewport(-32767, -32767, -32767, -32767);
RasterNode::checkReload();
}
void ImageNode::getElementsByPos(const glm::vec2& pos, vector<NodePtr>& pElements)
{
if (reactsToMouseEvents()) {
OffscreenCanvasPtr pCanvas = m_pImage->getCanvas();
if (pCanvas && pCanvas->getHandleEvents()) {
glm::vec2 nodeSize(getSize());
glm::vec2 canvasSize(pCanvas->getSize());
glm::vec2 localPos(pos.x*(canvasSize.x/nodeSize.x),
pos.y*(canvasSize.y/nodeSize.y));
pCanvas->getRootNode()->getElementsByPos(localPos, pElements);
} else {
RasterNode::getElementsByPos(pos, pElements);
}
}
}
BitmapPtr ImageNode::getBitmap()
{
return m_pImage->getBitmap();
}
bool ImageNode::isCanvasURL(const std::string& sURL)
{
return sURL.find("canvas:") == 0;
}
void ImageNode::checkCanvasValid(const CanvasPtr& pCanvas)
{
if (pCanvas == getCanvas()) {
m_href = "";
m_pImage->setEmpty();
throw Exception(AVG_ERR_INVALID_ARGS,
"Circular dependency between canvases.");
}
}
}
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