int main(int argc, char** argv)
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" example demonstrates the use of ImageStream for rendering movies as textures.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
arguments.getApplicationUsage()->addCommandLineOption("--texture2D","Use Texture2D rather than TextureRectangle.");
arguments.getApplicationUsage()->addCommandLineOption("--shader","Use shaders to post process the video.");
arguments.getApplicationUsage()->addCommandLineOption("--interactive","Use camera manipulator to allow movement around movie.");
arguments.getApplicationUsage()->addCommandLineOption("--flip","Flip the movie so top becomes bottom.");
#if defined(WIN32) || defined(__APPLE__)
arguments.getApplicationUsage()->addCommandLineOption("--devices","Print the Video input capability via QuickTime and exit.");
#endif
bool useTextureRectangle = true;
bool useShader = false;
// construct the viewer.
osgViewer::Viewer viewer(arguments);
if (arguments.argc()<=1)
{
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
return 1;
}
#if defined(WIN32) || defined(__APPLE__)
// if user requests devices video capability.
if (arguments.read("-devices") || arguments.read("--devices"))
{
// Force load QuickTime plugin, probe video capability, exit
osgDB::readImageFile("devices.live");
return 1;
}
#endif
while (arguments.read("--texture2D")) useTextureRectangle=false;
while (arguments.read("--shader")) useShader=true;
bool mouseTracking = false;
while (arguments.read("--mouse")) mouseTracking=true;
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
bool fullscreen = !arguments.read("--interactive");
bool flip = arguments.read("--flip");
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
if (useShader)
{
//useTextureRectangle = false;
static const char *shaderSourceTextureRec = {
"uniform vec4 cutoff_color;\n"
"uniform samplerRect movie_texture;\n"
"void main(void)\n"
"{\n"
" vec4 texture_color = textureRect(movie_texture, gl_TexCoord[0].st); \n"
" if (all(lessThanEqual(texture_color,cutoff_color))) discard; \n"
" gl_FragColor = texture_color;\n"
"}\n"
};
static const char *shaderSourceTexture2D = {
"uniform vec4 cutoff_color;\n"
"uniform sampler2D movie_texture;\n"
"void main(void)\n"
"{\n"
" vec4 texture_color = texture2D(movie_texture, gl_TexCoord[0].st); \n"
" if (all(lessThanEqual(texture_color,cutoff_color))) discard; \n"
" gl_FragColor = texture_color;\n"
"}\n"
};
osg::Program* program = new osg::Program;
program->addShader(new osg::Shader(osg::Shader::FRAGMENT,
useTextureRectangle ? shaderSourceTextureRec : shaderSourceTexture2D));
stateset->addUniform(new osg::Uniform("cutoff_color",osg::Vec4(0.1f,0.1f,0.1f,1.0f)));
stateset->addUniform(new osg::Uniform("movie_texture",0));
stateset->setAttribute(program);
}
osg::Vec3 pos(0.0f,0.0f,0.0f);
osg::Vec3 topleft = pos;
osg::Vec3 bottomright = pos;
bool xyPlane = fullscreen;
bool useAudioSink = false;
while(arguments.read("--audio")) { useAudioSink = true; }
#if USE_SDL
unsigned int numAudioStreamsEnabled = 0;
#endif
for(int i=1;i<arguments.argc();++i)
{
if (arguments.isString(i))
{
osg::Image* image = osgDB::readImageFile(arguments[i]);
osg::ImageStream* imagestream = dynamic_cast<osg::ImageStream*>(image);
if (imagestream)
{
osg::ImageStream::AudioStreams& audioStreams = imagestream->getAudioStreams();
if (useAudioSink && !audioStreams.empty())
{
osg::AudioStream* audioStream = audioStreams[0].get();
osg::notify(osg::NOTICE)<<"AudioStream read ["<<audioStream->getName()<<"]"<<std::endl;
#if USE_SDL
if (numAudioStreamsEnabled==0)
{
audioStream->setAudioSink(new SDLAudioSink(audioStream));
++numAudioStreamsEnabled;
}
#endif
}
imagestream->play();
}
if (image)
{
osg::notify(osg::NOTICE)<<"image->s()"<<image->s()<<" image-t()="<<image->t()<<" aspectRatio="<<image->getPixelAspectRatio()<<std::endl;
float width = image->s() * image->getPixelAspectRatio();
float height = image->t();
osg::ref_ptr<osg::Drawable> drawable = myCreateTexturedQuadGeometry(pos, width, height,image, useTextureRectangle, xyPlane, flip);
if (image->isImageTranslucent())
{
osg::notify(osg::NOTICE)<<"Transparent movie, enabling blending."<<std::endl;
drawable->getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);
drawable->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
}
geode->addDrawable(drawable.get());
bottomright = pos + osg::Vec3(width,height,0.0f);
if (xyPlane) pos.y() += height*1.05f;
else pos.z() += height*1.05f;
}
else
{
std::cout<<"Unable to read file "<<arguments[i]<<std::endl;
}
}
}
// set the scene to render
viewer.setSceneData(geode.get());
if (viewer.getSceneData()==0)
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
// pass the model to the MovieEventHandler so it can pick out ImageStream's to manipulate.
MovieEventHandler* meh = new MovieEventHandler();
meh->setMouseTracking( mouseTracking );
meh->set( viewer.getSceneData() );
viewer.addEventHandler( meh );
viewer.addEventHandler( new osgViewer::StatsHandler );
viewer.addEventHandler( new osgGA::StateSetManipulator( viewer.getCamera()->getOrCreateStateSet() ) );
viewer.addEventHandler( new osgViewer::WindowSizeHandler );
// add the record camera path handler
viewer.addEventHandler(new osgViewer::RecordCameraPathHandler);
// report any errors if they have occurred when parsing the program arguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
if (fullscreen)
{
viewer.realize();
viewer.getCamera()->setClearColor(osg::Vec4(0.0f,0.0f,0.0f,1.0f));
float screenAspectRatio = 1280.0f/1024.0f;
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (wsi)
{
unsigned int width, height;
wsi->getScreenResolution(osg::GraphicsContext::ScreenIdentifier(0), width, height);
screenAspectRatio = float(width) / float(height);
}
float modelAspectRatio = (bottomright.x()-topleft.x())/(bottomright.y()-topleft.y());
viewer.getCamera()->setViewMatrix(osg::Matrix::identity());
osg::Vec3 center = (bottomright + topleft)*0.5f;
osg::Vec3 dx(bottomright.x()-center.x(), 0.0f, 0.0f);
osg::Vec3 dy(0.0f, topleft.y()-center.y(), 0.0f);
float ratio = modelAspectRatio/screenAspectRatio;
if (ratio>1.0f)
{
// use model width as the control on model size.
bottomright = center + dx - dy * ratio;
topleft = center - dx + dy * ratio;
}
else
{
// use model height as the control on model size.
bottomright = center + dx / ratio - dy;
topleft = center - dx / ratio + dy;
}
viewer.getCamera()->setProjectionMatrixAsOrtho2D(topleft.x(),bottomright.x(),topleft.y(),bottomright.y());
while(!viewer.done())
{
viewer.frame();
}
return 0;
}
else
{
// create the windows and run the threads.
return viewer.run();
}
}
int main(int argc, char** argv)
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" example demonstrates the use of ImageStream for rendering movies as textures.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
arguments.getApplicationUsage()->addCommandLineOption("--texture2D","Use Texture2D rather than TextureRectangle.");
arguments.getApplicationUsage()->addCommandLineOption("--shader","Use shaders to post process the video.");
arguments.getApplicationUsage()->addCommandLineOption("--interactive","Use camera manipulator to allow movement around movie.");
arguments.getApplicationUsage()->addCommandLineOption("--flip","Flip the movie so top becomes bottom.");
#if defined(WIN32) || defined(__APPLE__)
arguments.getApplicationUsage()->addCommandLineOption("--devices","Print the Video input capability via QuickTime and exit.");
#endif
bool useTextureRectangle = true;
bool useShader = false;
// construct the viewer.
osgViewer::Viewer viewer(arguments);
if (arguments.argc()<=1)
{
arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
return 1;
}
#if defined(WIN32) || defined(__APPLE__)
// if user requests devices video capability.
if (arguments.read("-devices") || arguments.read("--devices"))
{
// Force load QuickTime plugin, probe video capability, exit
osgDB::readImageFile("devices.live");
return 1;
}
#endif
while (arguments.read("--texture2D")) useTextureRectangle=false;
while (arguments.read("--shader")) useShader=true;
bool mouseTracking = false;
while (arguments.read("--mouse")) mouseTracking=true;
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
bool fullscreen = !arguments.read("--interactive");
bool flip = arguments.read("--flip");
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
if (useShader)
{
//useTextureRectangle = false;
static const char *shaderSourceTextureRec = {
"uniform vec4 cutoff_color;\n"
"uniform samplerRect movie_texture;\n"
"void main(void)\n"
"{\n"
" vec4 texture_color = textureRect(movie_texture, gl_TexCoord[0].st); \n"
" if (all(lessThanEqual(texture_color,cutoff_color))) discard; \n"
" gl_FragColor = texture_color;\n"
"}\n"
};
static const char *shaderSourceTexture2D = {
"uniform vec4 cutoff_color;\n"
"uniform sampler2D movie_texture;\n"
"void main(void)\n"
"{\n"
" vec4 texture_color = texture2D(movie_texture, gl_TexCoord[0].st); \n"
" if (all(lessThanEqual(texture_color,cutoff_color))) discard; \n"
" gl_FragColor = texture_color;\n"
"}\n"
};
osg::Program* program = new osg::Program;
program->addShader(new osg::Shader(osg::Shader::FRAGMENT,
useTextureRectangle ? shaderSourceTextureRec : shaderSourceTexture2D));
stateset->addUniform(new osg::Uniform("cutoff_color",osg::Vec4(0.1f,0.1f,0.1f,1.0f)));
stateset->addUniform(new osg::Uniform("movie_texture",0));
stateset->setAttribute(program);
}
osg::Vec3 pos(0.0f,0.0f,0.0f);
osg::Vec3 topleft = pos;
osg::Vec3 bottomright = pos;
bool xyPlane = fullscreen;
for(int i=1;i<arguments.argc();++i)
{
if (arguments.isString(i))
{
osg::Image* image = osgDB::readImageFile(arguments[i]);
osg::ImageStream* imagestream = dynamic_cast<osg::ImageStream*>(image);
if (imagestream) imagestream->play();
if (image)
{
osg::notify(osg::NOTICE)<<"image->s()"<<image->s()<<" image-t()="<<image->t()<<std::endl;
geode->addDrawable(myCreateTexturedQuadGeometry(pos,image->s(),image->t(),image, useTextureRectangle, xyPlane, flip));
bottomright = pos + osg::Vec3(static_cast<float>(image->s()),static_cast<float>(image->t()),0.0f);
if (xyPlane) pos.y() += image->t()*1.05f;
else pos.z() += image->t()*1.05f;
}
else
{
std::cout<<"Unable to read file "<<arguments[i]<<std::endl;
}
}
}
// set the scene to render
viewer.setSceneData(geode.get());
if (viewer.getSceneData()==0)
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
// pass the model to the MovieEventHandler so it can pick out ImageStream's to manipulate.
MovieEventHandler* meh = new MovieEventHandler();
meh->setMouseTracking( mouseTracking );
meh->set( viewer.getSceneData() );
viewer.addEventHandler( meh );
viewer.addEventHandler( new osgViewer::StatsHandler );
viewer.addEventHandler( new osgGA::StateSetManipulator( viewer.getCamera()->getOrCreateStateSet() ) );
viewer.addEventHandler( new osgViewer::WindowSizeHandler );
// add the record camera path handler
viewer.addEventHandler(new osgViewer::RecordCameraPathHandler);
// report any errors if they have occurred when parsing the program arguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
if (fullscreen)
{
viewer.realize();
viewer.getCamera()->setViewMatrix(osg::Matrix::identity());
viewer.getCamera()->setProjectionMatrixAsOrtho2D(topleft.x(),bottomright.x(),topleft.y(),bottomright.y());
while(!viewer.done())
{
viewer.frame();
}
return 0;
}
else
{
// create the windows and run the threads.
return viewer.run();
}
}