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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2007 The Zdeno Ash Miklas
*
* This source file is part of VideoTexture library
*
* Contributor(s):
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file gameengine/VideoTexture/ImageMix.cpp
* \ingroup bgevideotex
*/
// implementation
#include "PyObjectPlus.h"
#include <structmember.h>
#include "ImageMix.h"
#include "ImageBase.h"
#include "Exception.h"
// cast ImageSource pointer to ImageSourceMix
inline ImageSourceMix *getImageSourceMix(ImageSource *src)
{ return static_cast<ImageSourceMix*>(src); }
// get weight
short ImageMix::getWeight(const char *id)
{
// find source
ImageSourceList::iterator src = findSource(id);
// if found, return its weight
return src != m_sources.end() ? getImageSourceMix(*src)->getWeight() : 0;
}
// set weight
bool ImageMix::setWeight(const char *id, short weight)
{
// find source
ImageSourceList::iterator src = findSource(id);
// if source isn't found, report it
if (src == m_sources.end()) return false;
// set its weight
getImageSourceMix(*src)->setWeight(weight);
return true;
}
ExceptionID ImageSizesNotMatch;
ExpDesc ImageSizesNotMatchDesc(ImageSizesNotMatch, "Image sizes of sources are different");
// calculate image from sources and set its availability
void ImageMix::calcImage(unsigned int texId, double ts)
{
// check source sizes
if (!checkSourceSizes()) THRWEXCP(ImageSizesNotMatch, S_OK);
// set offsets to image buffers
for (ImageSourceList::iterator it = m_sources.begin(); it != m_sources.end(); ++it)
// if image buffer is available
if ((*it)->getImageBuf() != NULL)
// set its offset
getImageSourceMix(*it)->setOffset(m_sources[0]->getImageBuf());
// otherwise don't calculate image
else
return;
// if there is only single source
if (m_sources.size() == 1)
{
// use single filter
FilterBase mixFilt;
// fiter and convert image
filterImage(mixFilt, m_sources[0]->getImageBuf(), m_sources[0]->getSize());
}
// otherwise use mix filter to merge source images
else
{
FilterImageMix mixFilt (m_sources);
// fiter and convert image
filterImage(mixFilt, m_sources[0]->getImageBuf(), m_sources[0]->getSize());
}
}
// cast Image pointer to ImageMix
inline ImageMix * getImageMix(PyImage *self)
{ return static_cast<ImageMix*>(self->m_image); }
// python methods
// get source weight
static PyObject *getWeight(PyImage *self, PyObject *args)
{
// weight
short weight = 0;
// get arguments
char *id;
if (!PyArg_ParseTuple(args, "s:getWeight", &id))
return NULL;
if (self->m_image != NULL)
// get weight
weight = getImageMix(self)->getWeight(id);
// return weight
return Py_BuildValue("h", weight);
}
// set source weight
static PyObject *setWeight(PyImage *self, PyObject *args)
{
// get arguments
char *id;
short weight = 0;
if (!PyArg_ParseTuple(args, "sh:setWeight", &id, &weight))
return NULL;
if (self->m_image != NULL)
// set weight
if (!getImageMix(self)->setWeight(id, weight))
{
// if not set, report error
PyErr_SetString(PyExc_RuntimeError, "Invalid id of source");
return NULL;
}
// return none
Py_RETURN_NONE;
}
// methods structure
static PyMethodDef imageMixMethods[] = {
{"getSource", (PyCFunction)Image_getSource, METH_VARARGS, "get image source"},
{"setSource", (PyCFunction)Image_setSource, METH_VARARGS, "set image source"},
{"getWeight", (PyCFunction)getWeight, METH_VARARGS, "get image source weight"},
{"setWeight", (PyCFunction)setWeight, METH_VARARGS, "set image source weight"},
// methods from ImageBase class
{"refresh", (PyCFunction)Image_refresh, METH_NOARGS, "Refresh image - invalidate its current content"},
{NULL}
};
// attributes structure
static PyGetSetDef imageMixGetSets[] = {
// attributes from ImageBase class
{(char*)"valid", (getter)Image_valid, NULL, (char*)"bool to tell if an image is available", NULL},
{(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 neighbor)", 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 ImageMixType = {
PyVarObject_HEAD_INIT(NULL, 0)
"VideoTexture.ImageMix", /*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*/
&imageBufferProcs, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
"Image mixer", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
imageMixMethods, /* tp_methods */
0, /* tp_members */
imageMixGetSets, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)Image_init<ImageMix>, /* tp_init */
0, /* tp_alloc */
Image_allocNew, /* tp_new */
};
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