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)
124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/* $Id$
|
|
-----------------------------------------------------------------------------
|
|
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.
|
|
-----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#if !defined IMAGEMIX_H
|
|
#define IMAGEMIX_H
|
|
|
|
|
|
#include "Common.h"
|
|
|
|
#include "ImageBase.h"
|
|
#include "FilterBase.h"
|
|
|
|
|
|
/// class for source mixing
|
|
class ImageSourceMix : public ImageSource
|
|
{
|
|
public:
|
|
/// constructor
|
|
ImageSourceMix (const char * id) : ImageSource(id), m_weight(0x100) {}
|
|
/// destructor
|
|
virtual ~ImageSourceMix (void) {}
|
|
|
|
/// get offset
|
|
long long getOffset (void) { return m_offset; }
|
|
/// set offset
|
|
void setOffset (unsigned int * firstImg) { m_offset = m_image - firstImg; }
|
|
|
|
/// get weight
|
|
short getWeight (void) { return m_weight; }
|
|
/// set weight
|
|
void setWeight (short weight) { m_weight = weight; }
|
|
|
|
protected:
|
|
/// buffer offset to the first source buffer
|
|
long long m_offset;
|
|
/// source weight
|
|
short m_weight;
|
|
};
|
|
|
|
|
|
/// class for image mixer
|
|
class ImageMix : public ImageBase
|
|
{
|
|
public:
|
|
/// constructor
|
|
ImageMix (void) : ImageBase(false) {}
|
|
|
|
/// destructor
|
|
virtual ~ImageMix (void) {}
|
|
|
|
/// get weight
|
|
short getWeight (const char * id);
|
|
/// set weight
|
|
bool setWeight (const char * id, short weight);
|
|
|
|
protected:
|
|
|
|
/// create new source
|
|
virtual ImageSource * newSource (const char * id) { return new ImageSourceMix(id); }
|
|
|
|
/// calculate image from sources and set its availability
|
|
virtual void calcImage (unsigned int texId, double ts);
|
|
};
|
|
|
|
|
|
/// pixel filter for image mixer
|
|
class FilterImageMix : public FilterBase
|
|
{
|
|
public:
|
|
/// constructor
|
|
FilterImageMix (ImageSourceList & sources) : m_sources(sources) {}
|
|
/// destructor
|
|
virtual ~FilterImageMix (void) {}
|
|
|
|
protected:
|
|
/// source list
|
|
ImageSourceList & m_sources;
|
|
|
|
/// filter pixel, source int buffer
|
|
virtual unsigned int filter (unsigned int * src, short x, short y,
|
|
short * size, unsigned int pixSize, unsigned int val = 0)
|
|
{
|
|
// resulting pixel color
|
|
int color[] = {0, 0, 0, 0};
|
|
// iterate sources
|
|
for (ImageSourceList::iterator it = m_sources.begin(); it != m_sources.end(); ++it)
|
|
{
|
|
// get pointer to mixer source
|
|
ImageSourceMix * mixSrc = static_cast<ImageSourceMix*>(*it);
|
|
// add weighted source pixel to result
|
|
color[0] += mixSrc->getWeight() * (src[mixSrc->getOffset()] & 0xFF);
|
|
color[1] += mixSrc->getWeight() * ((src[mixSrc->getOffset()] >> 8) & 0xFF);
|
|
color[2] += mixSrc->getWeight() * ((src[mixSrc->getOffset()] >> 16) & 0xFF);
|
|
color[3] += mixSrc->getWeight() * ((src[mixSrc->getOffset()] >> 24) & 0xFF);
|
|
}
|
|
// return resulting color
|
|
return ((color[0] >> 8) & 0xFF) | (color[1] & 0xFF00)
|
|
| ((color[2] << 8) & 0xFF0000) | ((color[3] << 16) & 0xFF000000);
|
|
}
|
|
};
|
|
|
|
|
|
#endif
|
|
|