167 lines
5.1 KiB
C++
167 lines
5.1 KiB
C++
/* $Id$
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-----------------------------------------------------------------------------
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This source file is part of VideoTexture library
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Copyright (c) 2007 The Zdeno Ash Miklas
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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http://www.gnu.org/copyleft/lesser.txt.
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-----------------------------------------------------------------------------
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*/
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// implementation
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#include <PyObjectPlus.h>
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#include <structmember.h>
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#include "ImageBuff.h"
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#include "ImageBase.h"
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#include "FilterSource.h"
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// default filter
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FilterRGB24 defFilter;
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// load image from buffer
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void ImageBuff::load (unsigned char * img, short width, short height)
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{
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// initialize image buffer
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init(width, height);
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// original size
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short orgSize[2] = {width, height};
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// is filter available
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if (m_pyfilter != NULL)
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// use it to process image
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convImage(*(m_pyfilter->m_filter), img, orgSize);
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else
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// otherwise use default filter
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convImage(defFilter, img, orgSize);
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// image is available
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m_avail = true;
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}
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// cast Image pointer to ImageBuff
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inline ImageBuff * getImageBuff (PyImage * self)
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{ return static_cast<ImageBuff*>(self->m_image); }
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// python methods
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// load image
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static PyObject * load (PyImage * self, PyObject * args)
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{
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// parameters: string image buffer, its size, width, height
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unsigned char * buff;
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unsigned int buffSize;
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short width;
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short height;
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// parse parameters
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if (!PyArg_ParseTuple(args, "s#hh", &buff, &buffSize, &width, &height))
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{
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// report error
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PyErr_SetString(PyExc_TypeError, "Parameters are not correct");
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return NULL;
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}
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// else check buffer size
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else
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{
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// calc proper buffer size
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unsigned int propSize = width * height;
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// use pixel size from filter
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if (self->m_image->getFilter() != NULL)
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propSize *= self->m_image->getFilter()->m_filter->firstPixelSize();
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else
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propSize *= defFilter.firstPixelSize();
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// check if buffer size is correct
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if (propSize != buffSize)
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{
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// if not, report error
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PyErr_SetString(PyExc_TypeError, "Buffer hasn't correct size");
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return NULL;
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}
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else
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// if correct, load image
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getImageBuff(self)->load(buff, width, height);
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}
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Py_RETURN_NONE;
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}
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// methods structure
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static PyMethodDef imageBuffMethods[] =
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{
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{"load", (PyCFunction)load, METH_VARARGS, "Load image from buffer"},
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{NULL}
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};
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// attributes structure
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static PyGetSetDef imageBuffGetSets[] =
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{ // attributes from ImageBase class
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{(char*)"image", (getter)Image_getImage, NULL, (char*)"image data", NULL},
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{(char*)"size", (getter)Image_getSize, NULL, (char*)"image size", NULL},
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{(char*)"scale", (getter)Image_getScale, (setter)Image_setScale, (char*)"fast scale of image (near neighbour)", NULL},
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{(char*)"flip", (getter)Image_getFlip, (setter)Image_setFlip, (char*)"flip image vertically", NULL},
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{(char*)"filter", (getter)Image_getFilter, (setter)Image_setFilter, (char*)"pixel filter", NULL},
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{NULL}
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};
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// define python type
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PyTypeObject ImageBuffType =
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{
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PyObject_HEAD_INIT(NULL)
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0, /*ob_size*/
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"VideoTexture.ImageBuff", /*tp_name*/
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sizeof(PyImage), /*tp_basicsize*/
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0, /*tp_itemsize*/
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(destructor)Image_dealloc, /*tp_dealloc*/
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0, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_compare*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash */
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0, /*tp_call*/
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0, /*tp_str*/
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0, /*tp_getattro*/
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0, /*tp_setattro*/
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0, /*tp_as_buffer*/
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Py_TPFLAGS_DEFAULT, /*tp_flags*/
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"Image source from image buffer", /* tp_doc */
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0, /* tp_traverse */
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0, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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0, /* tp_iter */
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0, /* tp_iternext */
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imageBuffMethods, /* tp_methods */
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0, /* tp_members */
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imageBuffGetSets, /* tp_getset */
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0, /* tp_base */
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0, /* tp_dict */
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0, /* tp_descr_get */
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0, /* tp_descr_set */
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0, /* tp_dictoffset */
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(initproc)Image_init<ImageBuff>, /* tp_init */
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0, /* tp_alloc */
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Image_allocNew, /* tp_new */
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};
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