VideoTexture module.

The only compilation system that works for sure is the MSVC project files. I've tried my best to
update the other compilation system but I count on the community to check and fix them.
 
This is Zdeno Miklas video texture plugin ported to trunk. 
The original plugin API is maintained (can be found here http://home.scarlet.be/~tsi46445/blender/blendVideoTex.html)
EXCEPT for the following:

The module name is changed to VideoTexture (instead of blendVideoTex).

A new (and only) video source is now available: VideoFFmpeg()
You must pass 1 to 4 arguments when you create it (you can use named arguments):

VideoFFmpeg(file) : play a video file
VideoFFmpeg(file, capture, rate, width, height) : start a live video capture

file:
In the first form, file is a video file name, relative to startup directory.
It can also be a URL, FFmpeg will happily stream a video from a network source.
In the second form, file is empty or is a hint for the format of the video capture.
In Windows, file is ignored and should be empty or not specified.
In Linux, ffmpeg supports two types of device: VideoForLinux and DV1394. 
The user specifies the type of device with the file parameter:
   [<device_type>][:<standard>]
   <device_type> : 'v4l' for VideoForLinux, 'dv1394' for DV1394; default to 'v4l'
   <standard>    : 'pal', 'secam' or 'ntsc', default to 'ntsc'
The driver name is constructed automatically from the device types:
   v4l   : /dev/video<capture>
   dv1394: /dev/dv1394/<capture>
If you have different driver name, you can specify the driver name explicitely 
instead of device type. Examples of valid file parameter:
   /dev/v4l/video0:pal
   /dev/ieee1394/1:ntsc
   dv1394:ntsc
   v4l:pal
   :secam

capture: 
Defines the index number of the capture source, starting from 0. The first capture device is always 0.
The VideoTexutre modules knows that you want to start a live video capture when you set this parameter to a number >= 0. Setting this parameter < 0 indicates a video file playback. Default value is -1.

rate: 
the capture frame rate, by default 25 frames/sec

width: 
height: 
Width and height of the video capture in pixel, default value 0.
In Windows you must specify these values and they must fit with the capture device capability. 
For example, if you have a webcam that can capture at 160x120, 320x240 or 640x480, 
you must specify one of these couple of values or the opening of the video source will fail.
In Linux, default values are provided by the VideoForLinux driver if you don't specify width and height.

Simple example
**************
1. Texture definition script:

import VideoTexture

contr = GameLogic.getCurrentController()
obj = contr.getOwner()
if not hasattr(GameLogic, 'video'):
	matID = VideoTexture.materialID(obj, 'MAVideoMat')
	GameLogic.video = VideoTexture.Texture(obj, matID)
	GameLogic.vidSrc = VideoTexture.VideoFFmpeg('trailer_400p.ogg')
	# Streaming is also possible:
	#GameLogic.vidSrc = VideoTexture.VideoFFmpeg('http://10.32.1.10/trailer_400p.ogg')
	GameLogic.vidSrc.repeat = -1
	# If the video dimensions are not a power of 2, scaling must be done before
	# sending the texture to the GPU. This is done by default with gluScaleImage()
	# but you can also use a faster, but less precise, scaling by setting scale
	# to True. Best approach is to convert the video offline and set the dimensions right.
	GameLogic.vidSrc.scale = True
	# FFmpeg always delivers the video image upside down, so flipping is enabled automatically
	#GameLogic.vidSrc.flip = True

if contr.getSensors()[0].isPositive():
	GameLogic.video.source = GameLogic.vidSrc
	GameLogic.vidSrc.play()


2. Texture refresh script:

obj = GameLogic.getCurrentController().getOwner()
if hasattr(GameLogic, 'video') != 0:
  GameLogic.video.refresh(True)

You can download this demo here: 
http://home.scarlet.be/~tsi46445/blender/VideoTextureDemo.blend
http://home.scarlet.be/~tsi46445/blender/trailer_400p.ogg

1 files changed, 123 insertions, 0 deletions

diff --git a/source/gameengine/VideoTexture/ImageMix.h b/source/gameengine/VideoTexture/ImageMix.h
new file mode 100644
index 00000000000..b4842bd6b40
--- /dev/null
+++ b/source/gameengine/VideoTexture/ImageMix.h
@@ -0,0 +1,123 @@
+/* $Id$
+-----------------------------------------------------------------------------
+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);
+};
+
+
+/// 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
+