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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
*
* 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
//$Id$
extern "C"
{
#include <png.h>
}
#include <boost/python.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/palette.hpp>
#include <mapnik/image_view.hpp>
#include <mapnik/png_io.hpp>
#include <sstream>
// jpeg
#if defined(HAVE_JPEG)
#include <mapnik/jpeg_io.hpp>
#endif
using mapnik::image_data_32;
using mapnik::image_view;
using mapnik::save_to_file;
// output 'raw' pixels
PyObject* view_tostring1(image_view<image_data_32> const& view)
{
std::ostringstream ss(std::ios::out|std::ios::binary);
for (unsigned i=0;i<view.height();i++)
{
ss.write(reinterpret_cast<const char*>(view.getRow(i)),
view.width() * sizeof(image_view<image_data_32>::pixel_type));
}
return
#if PY_VERSION_HEX >= 0x03000000
::PyBytes_FromStringAndSize
#else
::PyString_FromStringAndSize
#endif
((const char*)ss.str().c_str(),ss.str().size());
}
// encode (png,jpeg)
PyObject* view_tostring2(image_view<image_data_32> const & view, std::string const& format)
{
mapnik::rgba_palette pal;
std::string s = save_to_string(view, format, pal);
return
#if PY_VERSION_HEX >= 0x03000000
::PyBytes_FromStringAndSize
#else
::PyString_FromStringAndSize
#endif
(s.data(),s.size());
}
PyObject* view_tostring3(image_view<image_data_32> const & view, std::string const& format, mapnik::rgba_palette const& pal)
{
std::string s = save_to_string(view, format, pal);
return
#if PY_VERSION_HEX >= 0x03000000
::PyBytes_FromStringAndSize
#else
::PyString_FromStringAndSize
#endif
(s.data(),s.size());
}
void save_view1(image_view<image_data_32> const& view,
std::string const& filename)
{
save_to_file(view,filename);
}
void save_view2(image_view<image_data_32> const& view,
std::string const& filename,
std::string const& type)
{
save_to_file(view,filename,type);
}
void save_view3(image_view<image_data_32> const& view,
std::string const& filename,
std::string const& type,
mapnik::rgba_palette const& pal)
{
save_to_file(view,filename,type,pal);
}
void export_image_view()
{
using namespace boost::python;
class_<image_view<image_data_32> >("ImageView","A view into an image.",no_init)
.def("width",&image_view<image_data_32>::width)
.def("height",&image_view<image_data_32>::height)
.def("tostring",&view_tostring1)
.def("tostring",&view_tostring2)
.def("tostring",&view_tostring3)
.def("save",&save_view1)
.def("save",&save_view2)
.def("save",&save_view3)
;
}
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