forked from bartvdbraak/blender
a8a99a628f
Add optional parameter to VideoTexture.Texture refresh() method to specify timestamp (in seconds from start of movie) of the frame to be loaded. This value is passed down to image source and for VideoFFmpeg source, it is used instead of current time to load the frame from the video file. When combined with an audio actuator, it can be used to synchronize the sound and the image: specify the same video file in the sound actuator and use the KX_SoundActuator time attribute as timestamp to refresh: the frame corresponding to the sound will be loaded: GameLogic.video.refresh(True, soundAct.time)
209 lines
6.5 KiB
C++
209 lines
6.5 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 "ImageMix.h"
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#include "ImageBase.h"
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#include "Exception.h"
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// cast ImageSource pointer to ImageSourceMix
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inline ImageSourceMix * getImageSourceMix (ImageSource * src)
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{ return static_cast<ImageSourceMix*>(src); }
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// get weight
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short ImageMix::getWeight (const char * id)
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{
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// find source
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ImageSourceList::iterator src = findSource(id);
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// if found, return its weight
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return src != m_sources.end() ? getImageSourceMix(*src)->getWeight() : 0;
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}
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// set weight
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bool ImageMix::setWeight (const char * id, short weight)
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{
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// find source
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ImageSourceList::iterator src = findSource(id);
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// if source isn't found, report it
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if (src == m_sources.end()) return false;
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// set its weight
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getImageSourceMix(*src)->setWeight(weight);
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return true;
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}
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ExceptionID ImageSizesNotMatch;
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ExpDesc ImageSizesNotMatchDesc (ImageSizesNotMatch, "Image sizes of sources are different");
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// calculate image from sources and set its availability
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void ImageMix::calcImage (unsigned int texId, double ts)
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{
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// check source sizes
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if (!checkSourceSizes()) THRWEXCP(ImageSizesNotMatch, S_OK);
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// set offsets to image buffers
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for (ImageSourceList::iterator it = m_sources.begin(); it != m_sources.end(); ++it)
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// if image buffer is available
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if ((*it)->getImageBuf() != NULL)
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// set its offset
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getImageSourceMix(*it)->setOffset(m_sources[0]->getImageBuf());
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// otherwise don't calculate image
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else
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return;
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// if there is only single source
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if (m_sources.size() == 1)
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{
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// use single filter
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FilterBase mixFilt;
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// fiter and convert image
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filterImage(mixFilt, m_sources[0]->getImageBuf(), m_sources[0]->getSize());
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}
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// otherwise use mix filter to merge source images
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else
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{
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FilterImageMix mixFilt (m_sources);
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// fiter and convert image
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filterImage(mixFilt, m_sources[0]->getImageBuf(), m_sources[0]->getSize());
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}
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}
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// cast Image pointer to ImageMix
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inline ImageMix * getImageMix (PyImage * self)
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{ return static_cast<ImageMix*>(self->m_image); }
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// python methods
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// get source weight
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PyObject * getWeight (PyImage * self, PyObject * args)
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{
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// weight
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short weight = 0;
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// get arguments
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char * id;
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if (!PyArg_ParseTuple(args, "s:getWeight", &id))
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return NULL;
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if (self->m_image != NULL)
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// get weight
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weight = getImageMix(self)->getWeight(id);
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// return weight
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return Py_BuildValue("h", weight);
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}
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// set source weight
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PyObject * setWeight (PyImage * self, PyObject * args)
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{
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// get arguments
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char * id;
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short weight = 0;
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if (!PyArg_ParseTuple(args, "sh:setWeight", &id, &weight))
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return NULL;
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if (self->m_image != NULL)
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// set weight
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if (!getImageMix(self)->setWeight(id, weight))
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{
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// if not set, report error
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PyErr_SetString(PyExc_RuntimeError, "Invalid id of source");;
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return NULL;
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}
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// return none
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Py_RETURN_NONE;
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}
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// methods structure
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static PyMethodDef imageMixMethods[] =
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{
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{"getSource", (PyCFunction)Image_getSource, METH_VARARGS, "get image source"},
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{"setSource", (PyCFunction)Image_setSource, METH_VARARGS, "set image source"},
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{"getWeight", (PyCFunction)getWeight, METH_VARARGS, "get image source weight"},
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{"setWeight", (PyCFunction)setWeight, METH_VARARGS, "set image source weight"},
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// methods from ImageBase class
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{"refresh", (PyCFunction)Image_refresh, METH_NOARGS, "Refresh image - invalidate its current content"},
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{NULL}
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};
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// attributes structure
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static PyGetSetDef imageMixGetSets[] =
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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 ImageMixType =
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{
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PyVarObject_HEAD_INIT(NULL, 0)
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"VideoTexture.ImageMix", /*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 mixer", /* 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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imageMixMethods, /* tp_methods */
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0, /* tp_members */
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imageMixGetSets, /* 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<ImageMix>, /* 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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