ImageType ImageUtils::readBinaryPPM(const char *filename, int &width, int &height)
{
FILE *imgin = NULL;
int mval=0, format=0, eret;
ImageType ret = IMAGE_TYPE_NOIMAGE;
imgin = fopen(filename, "r");
if (imgin == NULL) {
fprintf(stderr, "Error: Filename %s not found\n", filename);
return ret;
}
eret = fscanf(imgin, "P%d\n", &format);
if (format != 6) {
fprintf(stderr, "Error: readBinaryPPM only supports PPM format (P6)\n");
return ret;
}
eret = fscanf(imgin, "%d %d\n", &width, &height);
eret = fscanf(imgin, "%d\n", &mval);
ret = allocateImage(width, height, IMAGE_TYPE_NUM_CHANNELS);
eret = fread(ret, sizeof(ImageTypeBase), IMAGE_TYPE_NUM_CHANNELS*width*height, imgin);
fclose(imgin);
return ret;
}
sdviz::Image loadTestImage()
{
sdviz::Image image = allocateImage( lena_width, lena_height );
std::copy( lena, lena + lena_len, image.getBuffer() );
return image;
}
void
DSVL2Video::open()
{
graphManager = new DSVL_VideoSource();
if(FAILED(graphManager->BuildGraphFromXMLFile((char*)m_videoconfig.deviceconfig.c_str())))
{
std::cerr<<"OSGART->ERROR:Failed to build graph manager!!"<<std::endl;
exit(-1);
}
if(FAILED(graphManager->EnableMemoryBuffer()))
{
std::cerr<<"OSGART->ERROR:Failed to get memory buffer!!"<<std::endl;
exit(-1);
}
long frame_width;
long frame_height;
graphManager->GetCurrentMediaFormat(&frame_width, &frame_height,NULL,NULL);
allocateImage(frame_width, frame_height, 1, GL_BGRA, GL_UNSIGNED_BYTE, 1);
}
Image *readDATFile(const char *fileName) {
int value; //for IO
int i, j; //loop counters
int width, height; //pgm properties
Image *image;
FILE *imageFile;
imageFile = fopen(fileName, "rb");
if(!imageFile) {
printf("***imageio.c/readDATFile: cannot open file %s\n", fileName);
return NULL;
}
/* save width */
fscanf(imageFile,"%d",&width);
/* save height */
fscanf(imageFile,"%d",&height);
//allocate memory
image = allocateImage(width, height);
//read data
readDATFile_loop_17(&i, &image, &j, &imageFile, &value);
fclose(imageFile);
return image;
}
/// Copy 'grabbed' image into capture buffer and return it.
IplImage * CvCaptureCAM_TYZX::retrieveFrame(int)
{
if(!isOpened() || !g_tyzx_camera) return 0;
if(!image && !allocateImage())
return 0;
// copy camera image into buffer.
// tempting to reference TYZX memory directly to avoid copying.
switch (index)
{
case CV_TYZX_RIGHT:
memcpy(image->imageData, g_tyzx_camera->getRImage(), image->imageSize);
break;
case CV_TYZX_Z:
memcpy(image->imageData, g_tyzx_camera->getZImage(), image->imageSize);
break;
case CV_TYZX_LEFT:
default:
memcpy(image->imageData, g_tyzx_camera->getLImage(), image->imageSize);
break;
}
return image;
}
/** File has to be in one of the following formats:
[file://]filename Plain media file
http://ip:port/file HTTP URL
ftp://ip:port/file FTP URL
mms://ip:port/file MMS URL
screen:// Screen capture
[dvd://][device][@raw_device] DVD device
[vcd://][device] VCD device
[cdda://][device] Audio CD device
udp:[[<source address>]@[<bind address>][:<bind port>]]
*/
void open( const std::string& file, bool needPlay=true, unsigned int w=512, unsigned int h=512 )
{
_vlcMedia = libvlc_media_new_path( _vlc, file.c_str() );
libvlc_media_player_set_media( _vlcPlayer, _vlcMedia );
libvlc_video_set_callbacks( _vlcPlayer, &VLCImageStream::lockFunc, &VLCImageStream::unlockFunc,
&VLCImageStream::displayFunc, this );
libvlc_video_set_format( _vlcPlayer, "RGBA", w, h, w*4 );
allocateImage( w, h, 1, GL_RGBA, GL_UNSIGNED_BYTE );
if ( needPlay ) play();
}
int FrameLoader::getFrame(int frameNumber, IplImage **dst, _frame_normalization_methodT fnm, double normTarget) {
_TICTOC_TIC_FUNC;
message ("getFrame called ", verb_debug);
if (lastFrameLoaded != frameNumber) {
if (loadWholeFrame(frameNumber) != 0){
_TICTOC_TOC_FUNC;
return -1;
};
message ("loadWholeFrame returned ", verb_debug);
lastFrameLoaded = frameNumber;
}
if (loadIm == NULL) {
stringstream s("failed to load frame ");
s << frameNumber << "\n";
message (s.str().c_str(), verb_error);
_TICTOC_TOC_FUNC;
return -1;
}
checkAr();
allocateImage(&convertedIm, loadIm);
if (fnm == _frame_none) {
message ("calling cloneImage ", verb_debug);
cloneImage(loadIm, &convertedIm);
} else {
if (normTarget <= 0) {
message("You asked me to normalize an image, but gave me a target <= 0", verb_warning);
cloneImage(loadIm, &convertedIm);
} else {
double nf = getFrameNormFactor(frameNumber, fnm);
if (nf > 0) {
stringstream s; s << ("scaling frame: target norm factor = ");
s << normTarget << " and this frame has nf: " << nf;
nf = normTarget / nf;
s << " so I am multiplying by " << nf << "\n";
cvConvertScale(loadIm, convertedIm, nf, 0);
message(s.str().c_str(), verb_verbose);
} else {
message("Norm factor returned a value <= 0", verb_warning);
cloneImage(loadIm, &convertedIm);
}
}
}
message ("calling subImage", verb_debug);
string msg = "convertedIm info: " + imStrInfo(convertedIm);
message (msg.c_str(), verb_debug);
msg = "dst info: " + imStrInfo(*dst);
message (msg.c_str(), verb_debug);
subImage (convertedIm, dst, ar);
_TICTOC_TOC_FUNC;
message ("getFrame exiting", verb_debug);
return 0;
}
void generate_stl(const char *filenames_format_string, int min_n, int max_n,int step_n, int dimensions[], const char * stl_filename)
{
vtkSmartPointer<vtkImageData> im=allocateImage(dimensions);
for(int co=min_n; co<=max_n; co+=step_n)
{
for(char ch = 'E'; ch <= 'H'; ch++)
{
char buff[1024];
sprintf(buff, filenames_format_string ,co,ch);
loadImageFromFile(buff,im,dimensions);
}
}
vtkSmartPointer<vtkPolyDataMapper> mapper;
vtkSmartPointer<vtkLODActor> actor;
vtkSmartPointer<vtkMarchingCubes> contourf = vtkSmartPointer<vtkMarchingCubes>::New();
contourf->SetInputData(im);
contourf->SetValue(0,127);
contourf->ComputeNormalsOff();
contourf->ComputeScalarsOff();
contourf->ComputeGradientsOff();
// contourf->SetInputMemoryLimit(500000);
printf("About to update contourf");
contourf->Update();
printf("Contour Generated");
vtkSmartPointer<vtkSmoothPolyDataFilter> smoothf = vtkSmartPointer<vtkSmoothPolyDataFilter>::New();
smoothf->SetInputData(contourf->GetOutput());
smoothf->SetRelaxationFactor(0.1);
smoothf->SetNumberOfIterations(20);
smoothf->Update();
printf("Contour smoothed\n");
mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputData(smoothf->GetOutput());
printf("Begin updating mapper\n");
mapper->Update();
vtkSmartPointer<vtkPLYWriter> stlwriter = vtkSmartPointer<vtkPLYWriter>::New();
stlwriter->SetInputData(smoothf->GetOutput());
stlwriter->SetFileName(stl_filename);
stlwriter->SetFileTypeToBinary();
printf("Begin Writing stl file %s\n", stl_filename);
stlwriter->Write();
printf("Done writing to stl file");
//im->Delete();
}
void VideoPlayer::open( const std::string& file, unsigned int w, unsigned int h )
{
if ( libvlc_media_player_is_playing(_vlcPlayer)==1 )
{
libvlc_media_player_stop( _vlcPlayer );
libvlc_media_release( _vlcMedia );
}
std::string protocol = osgDB::getServerProtocol( file );
if ( !protocol.empty() ) _vlcMedia = libvlc_media_new_location( _vlc, file.c_str() );
else _vlcMedia = libvlc_media_new_path( _vlc, file.c_str() );
libvlc_media_player_set_media( _vlcPlayer, _vlcMedia );
libvlc_video_set_callbacks( _vlcPlayer, &VideoPlayer::lockFunc, &VideoPlayer::unlockFunc,
&VideoPlayer::displayFunc, this );
libvlc_video_set_format( _vlcPlayer, "RGBA", w, h, w*4 );
allocateImage( w, h, 1, GL_RGBA, GL_UNSIGNED_BYTE );
setInternalTextureFormat( GL_RGBA );
}
bool vtImage::Create(int width, int height, int bitdepth, bool create_palette)
{
GLenum pixelFormat;
GLenum dataType = GL_UNSIGNED_BYTE;
if (bitdepth == 24)
{
pixelFormat = GL_RGB;
}
else if (bitdepth == 32)
{
pixelFormat = GL_RGBA;
}
else if (bitdepth == 8)
{
pixelFormat = GL_LUMINANCE;
}
else
return false;
allocateImage(width, height, 1, pixelFormat, dataType);
return true;
}
int main(int argc, char const* argv[])
{
sdviz::Config config;
config.http_port = 8082;
config.ws_port = 8083;
sdviz::start( config );
sdviz::Image org_image = loadTestImage();
sdviz::Image image = allocateImage( org_image.getWidth(), org_image.getHeight() );
size_t const image_size = 3 * org_image.getWidth() * org_image.getHeight();
std::copy( org_image.getBuffer(), org_image.getBuffer() + image_size, image.getBuffer() );
sdviz::Canvas canvas{ image.getWidth(), image.getHeight() };
canvas.drawImage( image, std::make_tuple( 0.0, 0.0 ) );
auto image_element = sdviz::CanvasElement::create( canvas );
sdviz::ChartElement::value_type chart_data{ calcHistogram( image ) };
sdviz::ChartElement chart_element = sdviz::ChartElement::create( chart_data );
double red_slider_value = 0.5;
sdviz::SliderElementParam red_slider_param;
red_slider_param.label = "RED";
red_slider_param.on_value_changed = [&red_slider_value]( double old_value, double new_value ){
red_slider_value = new_value;
};
sdviz::SliderElement red_slider_element = sdviz::SliderElement::create( red_slider_value, red_slider_param );
double blue_slider_value = 0.5;
sdviz::SliderElementParam blue_slider_param;
blue_slider_param.label = "BLUE";
blue_slider_param.on_value_changed = [&blue_slider_value]( double old_value, double new_value ){
blue_slider_value = new_value;
};
sdviz::SliderElement blue_slider_element = sdviz::SliderElement::create( blue_slider_value, blue_slider_param );
double green_slider_value = 0.5;
sdviz::SliderElementParam green_slider_param;
green_slider_param.label = "GREEN";
green_slider_param.on_value_changed = [&green_slider_value]( double old_value, double new_value ){
green_slider_value = new_value;
};
sdviz::SliderElement green_slider_element = sdviz::SliderElement::create( green_slider_value, green_slider_param );
auto slider_container = sdviz::ContainerElement::create( "RGB Sliders", false );
slider_container << red_slider_element << green_slider_element << blue_slider_element;
sdviz::ButtonElementParam apply_button_param ;
apply_button_param.label = "apply";
apply_button_param.on_value_changed = [&]( bool new_value, bool old_value ){
shiftColors( org_image, image, red_slider_value, blue_slider_value, green_slider_value );
sdviz::Canvas canvas{ image.getWidth(), image.getHeight() };
canvas.drawImage( image, std::make_tuple( 0.0, 0.0 ) );
image_element.setValue( canvas );
sdviz::ChartElement::value_type const chart_data{ calcHistogram( image ) };
chart_element.setValue( chart_data );
};
sdviz::ButtonElement apply_button_element = sdviz::ButtonElement::create( false, apply_button_param );
sdviz::eout << image_element << chart_element << sdviz::endl
<< slider_container << sdviz::Page::endl
<< apply_button_element << sdviz::Page::endl;
sdviz::wait();
return 0;
}
bool open(xine_t* xine, const std::string& filename)
{
if (filename==getFileName()) return true;
_xine = xine;
// create visual
rgbout_visual_info_t* visual = new rgbout_visual_info_t;
visual->levels = PXLEVEL_ALL;
visual->format = PX_RGB32;
visual->user_data = this;
visual->callback = my_render_frame;
// set up video driver
_vo = xine_open_video_driver(_xine, "rgb", XINE_VISUAL_TYPE_RGBOUT, (void*)visual);
// set up audio driver
char* audio_driver = getenv("OSG_XINE_AUDIO_DRIVER");
_ao = audio_driver ? xine_open_audio_driver(_xine, audio_driver, NULL) : xine_open_audio_driver(_xine, "auto", NULL);
if (!_vo)
{
OSG_NOTICE<<"XineImageStream::open() : Failed to create video driver"<<std::endl;
return false;
}
// set up stream
_stream = xine_stream_new(_xine, _ao, _vo);
if (_stream)
{
if (_volume < 0.0)
{
_volume = static_cast<float>(xine_get_param(_stream, XINE_PARAM_AUDIO_VOLUME))/100.0f;
}
else
{
setVolume(_volume);
}
}
_event_queue = xine_event_new_queue(_stream);
xine_event_create_listener_thread(_event_queue, event_listener, this);
int result = xine_open(_stream, filename.c_str());
if (result==0)
{
OSG_INFO<<"XineImageStream::open() : Could not ready movie file."<<std::endl;
close();
return false;
}
_ready = false;
int width = xine_get_stream_info(_stream,XINE_STREAM_INFO_VIDEO_WIDTH);
int height = xine_get_stream_info(_stream,XINE_STREAM_INFO_VIDEO_HEIGHT);
allocateImage(width,height,1,GL_RGB,GL_UNSIGNED_BYTE,1);
OSG_INFO<<"XineImageStream::open() size "<<width<<" "<<height<<std::endl;
// play();
return true;
}
Image *readPGMFile(const char *fileName) {
int c, value; //for IO
int i, j; //loop counters
int width, height, maxval; //pgm properties
char number[6]; //should not have more than 5 digits
Image *image;
FILE *imageFile;
imageFile = fopen(fileName, "rb");
if(!imageFile) {
printf("***imageio.c/readPGMFile: cannot open file %s\n", fileName);
return NULL;
}
c = getc(imageFile);
if(!(c == 'P' && getc(imageFile) == '5')) {
printf("***imageio.c/readPGMFile: input file is not in PGM file format.\n");
return NULL;
}
while(isspace((c = getc(imageFile)))) /* skip whitespace */
;
while(c == '#') { /* skip comments */
while((c = getc(imageFile)) != '\n')
;
c = getc(imageFile);
}
/* save width */
readPGMFile_loop_1(&i, number, &c, &imageFile);
number[i] = '\0';
width = atoi(number);
while(isspace((c = getc(imageFile)))) /* skip whitespace */
;
while(c == '#') { /* skip comments */
while((c = getc(imageFile)) != '\n')
;
c = getc(imageFile);
}
/* save height */
readPGMFile_loop_2(&i, number, &c, &imageFile);
number[i] = '\0';
height = atoi(number);
while(isspace((c = getc(imageFile))))
;
readPGMFile_loop_3(&i, number, &c, &imageFile);
number[i] = '\0';
maxval = atoi(number);
if(maxval > 255) {
printf("***imageio.c/readPGMFile: The maximum grey value is greater than 255.\n");
return NULL;
}
//allocate memory
image = allocateImage(width, height);
//read data
readPGMFile_loop_4(&i, &image, &j, &value, &imageFile);
fclose(imageFile);
return image;
}
bool Image::allocateSurface(
unsigned int width,
unsigned int height,
cairo_format_t format,
const unsigned char* data
) {
// The default is for CAIRO_FORMAT_ARGB32.
GLenum pf1 = GL_RGBA;
GLenum pf2 = GL_UNSIGNED_INT_8_8_8_8_REV;
if(format == CAIRO_FORMAT_A8) {
pf1 = GL_ALPHA;
pf2 = GL_UNSIGNED_BYTE;
// In A8 surfaces, the width must be evenly divisible by 4; if not,
// this will catch that failure and resize the image appropriately.
width = cairo_format_stride_for_width(format, width);
}
else if(format != CAIRO_FORMAT_ARGB32) {
OSGCAIRO_WARN
<< "The format you've chosen is not supported in osgCairo; there is no "
"compelling reason (speed or otherwise) to use a format other than "
"ARGB32 or A8 in an OpenGL setting."
<< std::endl
;
return false;
}
// Call the osg::Image allocation method.
allocateImage(width, height, 1, pf1, pf2);
if(!osg::Image::valid()) return false;
unsigned int i = 4;
// This will have to do for now. :)
if(format == CAIRO_FORMAT_A8) i = 1;
if(data) std::memcpy(_data, data, (width * height) * i);
else std::memset(_data, 0, (width * height) * i);
if(format == CAIRO_FORMAT_A8) _pixelFormat = GL_ALPHA;
else _pixelFormat = GL_BGRA;
// Remove any previous surface allocation.
if(_surface) cairo_surface_destroy(_surface);
_surface = cairo_image_surface_create_for_data(
_data,
format,
width,
height,
cairo_format_stride_for_width(format, width)
);
if(!valid()) return false;
dirty();
return true;
}
bool Image::allocateSurface(const osg::Image* image) {
if(!image) return false;
if(_surface) return false;
const osgCairo::Image* test = dynamic_cast<const osgCairo::Image*>(image);
if(test) {
OSGCAIRO_WARN
<< "Cannot allocate from an existing osgCairo::Image; "
"use copy construction instead; this method is only intended "
"for allocating from a traditional osg::Image."
<< std::endl
;
return false;
}
GLenum format = image->getPixelFormat();
if(format == GL_ALPHA || format == GL_LUMINANCE) return allocateSurface(
image->s(),
image->t(),
CAIRO_FORMAT_A8,
static_cast<const unsigned char*>(image->getDataPointer())
);
else if(format != GL_RGB && format != GL_RGBA) {
OSGCAIRO_WARN
<< "Can only allocate ARGB32 surfaces from GL_RGB/GL_RGBA Image sources."
<< std::endl
;
return false;
}
allocateImage(image->s(), image->t(), 1, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV);
if(!osg::Image::valid()) return false;
_pixelFormat = GL_BGRA;
const unsigned char* data = image->data();
unsigned int numPixels = image->s() * image->t();
unsigned int offset = 4;
if(format == GL_RGB) offset = 3;
for(unsigned int i = 0; i < numPixels; i++) {
unsigned char a = data[i * offset + 3];
unsigned char r = data[i * offset + 2];
unsigned char g = data[i * offset + 1];
unsigned char b = data[i * offset];
// We want ARGB32 from a _SOURCE_ that _DOES_ have an alpha
// channel; therefore, we need to premultiply.
if(format == GL_RGBA) {
_data[i * 4] = (r * a) / 255;
_data[i * 4 + 1] = (g * a) / 255;
_data[i * 4 + 2] = (b * a) / 255;
_data[i * 4 + 3] = a;
}
// Otherwise, we're loading from a source with no alpha
// channel. This doesn't make a lot of sense to do, unless
// the user is planning on using CAIRO_OPERATOR_CLEAR at
// some point during their drawing.
else {
_data[i * 4] = r;
_data[i * 4 + 1] = g;
_data[i * 4 + 2] = b;
_data[i * 4 + 3] = 255;
}
}
// Remove any previous surface allocation.
if(_surface) cairo_surface_destroy(_surface);
_surface = cairo_image_surface_create_for_data(
_data,
CAIRO_FORMAT_ARGB32,
image->s(),
image->t(),
cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, image->s())
);
if(!valid()) return false;
dirty();
return true;
}
sdviz::Image loadTestImage()
{
sdviz::Image image = allocateImage( rad_image_width, rad_image_height );
std::copy( rad_image, rad_image + rad_image_len, image.getBuffer() );
return image;
}
