//--------------------------------------------------------------------------------
unsigned char* ofxCvFloatImage::getRoiPixels(){
if(bPixelsDirty) {
if( cvGrayscaleImage == NULL ) {
cvGrayscaleImage = cvCreateImage( cvSize(width,height), IPL_DEPTH_8U, 1 );
}
ofRectangle roi = getROI();
setImageROI(cvGrayscaleImage, roi); //make sure ROI is in sync
convertFloatToGray(cvImage, cvGrayscaleImage);
if(pixels == NULL) {
// we need pixels, allocate it
pixels = new unsigned char[(int)(roi.width*roi.height)];
pixelsWidth = roi.width;
pixelsHeight = roi.height;
} else if(pixelsWidth != roi.width || pixelsHeight != roi.height) {
// ROI changed, reallocate pixels for new size
delete pixels;
pixels = new unsigned char[(int)(roi.width*roi.height)];
pixelsWidth = roi.width;
pixelsHeight = roi.height;
}
// copy from ROI to pixels
for( int i = 0; i < roi.height; i++ ) {
memcpy( pixels + (int)(i*roi.width),
cvGrayscaleImage->imageData + ((int)(i+roi.y)*cvGrayscaleImage->widthStep) + (int)roi.x,
roi.width );
}
bPixelsDirty = false;
}
return pixels;
}
//--------------------------------------------------------------------------------
unsigned char* ofxCvFloatImage::getPixels(){
if(bPixelsDirty) {
if( cvGrayscaleImage == NULL ) {
cvGrayscaleImage = cvCreateImage( cvSize(width,height), IPL_DEPTH_8U, 1 );
}
pushROI();
resetImageROI(cvGrayscaleImage);
convertFloatToGray(cvImage, cvGrayscaleImage);
popROI();
if(pixels == NULL) {
// we need pixels, allocate it
pixels = new unsigned char[width*height];
pixelsWidth = width;
pixelsHeight = height;
} else if(pixelsWidth != width || pixelsHeight != height) {
// ROI changed, reallocate pixels for new size
delete pixels;
pixels = new unsigned char[width*height];
pixelsWidth = width;
pixelsHeight = height;
}
// copy from ROI to pixels
for( int i = 0; i < height; i++ ) {
memcpy( pixels + (i*width),
cvGrayscaleImage->imageData + (i*cvGrayscaleImage->widthStep),
width );
}
bPixelsDirty = false;
}
return pixels;
}
//--------------------------------------------------------------------------------
IplImage* ofxCvFloatImage::getCv8BitsRoiImage() {
if( !bAllocated ){
ofLog(OF_LOG_WARNING, "in getCv8BitsRoiImage, image is not allocated");
}
if(bPixelsDirty) {
if( cvGrayscaleImage == NULL ) {
cvGrayscaleImage = cvCreateImage( cvSize(width,height), IPL_DEPTH_8U, 1 );
}
ofRectangle roi = getROI();
setImageROI(cvGrayscaleImage, roi); //make sure ROI is in sync
convertFloatToGray(cvImage, cvGrayscaleImage);
}
return cvGrayscaleImage;
}
