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Make the python bindings for image views actually only return data

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from the view and not the whole image.
This commit is contained in:
Tom Hughes 2008-07-30 12:47:37 +00:00
parent e8935c4cf8
commit 72e21fa080
1 changed files with 10 additions and 5 deletions
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15
bindings/python/mapnik_image_view.cpp
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@ -40,17 +40,22 @@ using mapnik::save_to_file;
// output 'raw' pixels
PyObject* view_tostring1(image_view<ImageData32> const& view)
{
int size = view.width() * view.height() * 4;
return ::PyString_FromStringAndSize((const char*)view.data().getBytes(),size);
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<ImageData32>::pixel_type));
}
return ::PyString_FromStringAndSize((const char*)ss.str().c_str(),ss.str().size());
}
// encode (png,jpeg)
PyObject* view_tostring2(image_view<ImageData32> const & view, std::string const& format)
{
std::ostringstream ss(std::ios::out|std::ios::binary);
if (format == "png") save_as_png(ss,view.data());
else if (format == "png256") save_as_png256(ss,view.data());
else if (format == "jpeg") save_as_jpeg(ss,85,view.data());
if (format == "png") save_as_png(ss,view);
else if (format == "png256") save_as_png256(ss,view);
else if (format == "jpeg") save_as_jpeg(ss,85,view);
else throw mapnik::ImageWriterException("unknown format: " + format);
return ::PyString_FromStringAndSize((const char*)ss.str().c_str(),ss.str().size());
}