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/* $Id$
-----------------------------------------------------------------------------
This source file is part of VideoTexture library
Copyright (c) 2007 The Zdeno Ash Miklas
This program 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 program 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 program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/
// implementation
#include <PyObjectPlus.h>
#include <structmember.h>
#include "ImageBuff.h"
#include "ImageBase.h"
#include "FilterSource.h"
// default filter
FilterRGB24 defFilter;
// load image from buffer
void ImageBuff::load (unsigned char * img, short width, short height)
{
// initialize image buffer
init(width, height);
// original size
short orgSize[2] = {width, height};
// is filter available
if (m_pyfilter != NULL)
// use it to process image
convImage(*(m_pyfilter->m_filter), img, orgSize);
else
// otherwise use default filter
convImage(defFilter, img, orgSize);
// image is available
m_avail = true;
}
// cast Image pointer to ImageBuff
inline ImageBuff * getImageBuff (PyImage * self)
{ return static_cast<ImageBuff*>(self->m_image); }
// python methods
// load image
static PyObject * load (PyImage * self, PyObject * args)
{
// parameters: string image buffer, its size, width, height
unsigned char * buff;
unsigned int buffSize;
short width;
short height;
// parse parameters
if (!PyArg_ParseTuple(args, "s#hh", &buff, &buffSize, &width, &height))
{
// report error
PyErr_SetString(PyExc_TypeError, "Parameters are not correct");
return NULL;
}
// else check buffer size
else
{
// calc proper buffer size
unsigned int propSize = width * height;
// use pixel size from filter
if (self->m_image->getFilter() != NULL)
propSize *= self->m_image->getFilter()->m_filter->firstPixelSize();
else
propSize *= defFilter.firstPixelSize();
// check if buffer size is correct
if (propSize != buffSize)
{
// if not, report error
PyErr_SetString(PyExc_TypeError, "Buffer hasn't correct size");
return NULL;
}
else
// if correct, load image
getImageBuff(self)->load(buff, width, height);
}
Py_RETURN_NONE;
}
// methods structure
static PyMethodDef imageBuffMethods[] =
{
{"load", (PyCFunction)load, METH_VARARGS, "Load image from buffer"},
{NULL}
};
// attributes structure
static PyGetSetDef imageBuffGetSets[] =
{ // attributes from ImageBase class
{(char*)"image", (getter)Image_getImage, NULL, (char*)"image data", NULL},
{(char*)"size", (getter)Image_getSize, NULL, (char*)"image size", NULL},
{(char*)"scale", (getter)Image_getScale, (setter)Image_setScale, (char*)"fast scale of image (near neighbour)", NULL},
{(char*)"flip", (getter)Image_getFlip, (setter)Image_setFlip, (char*)"flip image vertically", NULL},
{(char*)"filter", (getter)Image_getFilter, (setter)Image_setFilter, (char*)"pixel filter", NULL},
{NULL}
};
// define python type
PyTypeObject ImageBuffType =
{
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"VideoTexture.ImageBuff", /*tp_name*/
sizeof(PyImage), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)Image_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"Image source from image buffer", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
imageBuffMethods, /* tp_methods */
0, /* tp_members */
imageBuffGetSets, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)Image_init<ImageBuff>, /* tp_init */
0, /* tp_alloc */
Image_allocNew, /* tp_new */
};
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