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////////////////////////////////////////////////////////
//
// GEM - Graphics Environment for Multimedia
//
// zmoelnig@iem.kug.ac.at
//
// Implementation file
//
// Copyright (c) 1997-1999 Mark Danks.
// Copyright (c) Günther Geiger.
// Copyright (c) 2001-2011 IOhannes m zmölnig. forum::für::umläute. IEM. zmoelnig@iem.at
// For information on usage and redistribution, and for a DISCLAIMER OF ALL
// WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.
//
/////////////////////////////////////////////////////////
#include "Gem/GemConfig.h"
#include "pix_image.h"
#include "Gem/State.h"
#ifdef _WIN32
# include <io.h>
# define close _close
# define snprintf _snprintf
#endif
#if defined(__unix__) || defined(__APPLE__)
# include <unistd.h>
# include <strings.h>
#endif
#include <stdio.h>
#include "Gem/Cache.h"
CPPEXTERN_NEW_WITH_ONE_ARG(pix_image, t_symbol *, A_DEFSYM);
/////////////////////////////////////////////////////////
//
// pix_image
//
/////////////////////////////////////////////////////////
// Constructor
//
/////////////////////////////////////////////////////////
pix_image :: pix_image(t_symbol *filename) :
m_wantThread(true),
m_loadedImage(NULL),
m_id(gem::image::load::INVALID),
m_infoOut(gem::RTE::Outlet(this))
{
if(filename!=&s_)openMess(filename->s_name);
gem::image::load::poll();
}
////////////////////////////////////////////////////////
// Destructor
//
/////////////////////////////////////////////////////////
pix_image :: ~pix_image()
{
gem::image::load::cancel(m_id);
cleanImage();
m_id=gem::image::load::INVALID;
}
void pix_image :: threadMess(bool onoff)
{
m_wantThread=onoff;
}
/////////////////////////////////////////////////////////
// openMess
//
/////////////////////////////////////////////////////////
void pix_image :: openMess(std::string filename)
{
if(filename.empty())return;
gem::image::load::cancel(m_id);
m_filename = findFile(filename);
gem::image::load::callback cb = loadCallback;
void*userdata=reinterpret_cast<void*>(this);
m_id = gem::image::load::INVALID;
bool success=false;
if(m_wantThread) {
success=gem::image::load::async(cb, userdata, m_filename, m_id);
} else {
success=gem::image::load:: sync(cb, userdata, m_filename, m_id);
}
if(gem::image::load::INVALID == m_id)
success=false;
std::vector<gem::any>atoms;
gem::any value;
if(success) {
if(gem::image::load::IMMEDIATE!=m_id) {
verbose(1, "loading image '%s' with ID:%d", m_filename.c_str(), m_id);
atoms.push_back(value=std::string("defer"));
atoms.push_back(value=(int)m_id);
} else {
atoms.push_back(value=std::string("success"));
}
} else {
error("loading of '%s' failed", m_filename.c_str());
atoms.push_back(value=std::string("fail"));
}
atoms.push_back(value=m_filename);
m_infoOut.send("load", atoms);
}
void pix_image:: loaded(const gem::image::load::id_t ID,
imageStruct*img,
const gem::Properties&props) {
std::vector<gem::any>atoms;
gem::any value;
if(ID!=m_id || ID == gem::image::load::INVALID) {
atoms.push_back(value=std::string("discard"));
if(ID!=gem::image::load::INVALID)
atoms.push_back(value=(int)ID);
verbose(1, "discarding image with ID %d", ID);
m_infoOut.send("load", atoms);
return;
}
cleanImage();
if(img) {
m_loadedImage=img;
m_loadedImage->copy2Image(&m_pixBlock.image);
m_pixBlock.newimage = 1;
verbose(0, "loaded image '%s'", m_filename.c_str());
atoms.push_back(value=std::string("success"));
} else {
error("failed to load image '%s'", m_filename.c_str());
atoms.push_back(value=std::string("fail"));
}
atoms.push_back(value=(int)ID);
if(gem::image::load::IMMEDIATE!=m_id) {
m_infoOut.send("load", atoms);
}
}
void pix_image:: loadCallback(void*data,
gem::image::load::id_t ID,
imageStruct*img,
const gem::Properties&props) {
pix_image*me=reinterpret_cast<pix_image*>(data);
me->loaded(ID, img, props);
}
/////////////////////////////////////////////////////////
// render
//
/////////////////////////////////////////////////////////
void pix_image :: render(GemState *state)
{
gem::image::load::poll();
// if we don't have an image, just return
if (!m_loadedImage){
return;
}
// do we need to reload the image?
if (m_cache&&m_cache->resendImage)
{
m_loadedImage->refreshImage(&m_pixBlock.image);
m_pixBlock.newimage = 1;
m_cache->resendImage = 0;
}
state->set(GemState::_PIX, &m_pixBlock);
}
/////////////////////////////////////////////////////////
// postrender
//
/////////////////////////////////////////////////////////
void pix_image :: postrender(GemState *state)
{
m_pixBlock.newimage = 0;
state->set(GemState::_PIX, static_cast<pixBlock*>(NULL));
}
/////////////////////////////////////////////////////////
// startRendering
//
/////////////////////////////////////////////////////////
void pix_image :: startRendering()
{
if (!m_loadedImage) return;
m_loadedImage->refreshImage(&m_pixBlock.image);
m_pixBlock.newimage = 1;
}
/////////////////////////////////////////////////////////
// cleanImage
//
/////////////////////////////////////////////////////////
void pix_image :: cleanImage()
{
// release previous data
if (m_loadedImage)
{
delete m_loadedImage;
m_loadedImage = NULL;
m_pixBlock.image.clear();
m_pixBlock.image.data = NULL;
}
}
/////////////////////////////////////////////////////////
// static member function
//
/////////////////////////////////////////////////////////
void pix_image :: obj_setupCallback(t_class *classPtr)
{
CPPEXTERN_MSG1(classPtr, "open", openMess, std::string);
CPPEXTERN_MSG1(classPtr, "thread", threadMess, bool);
}
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