//--------------------------------------------------------------------------------
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;
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::setFromPixels( const unsigned char* _pixels, int w, int h ) {
// This sets the internal image ignoring any ROI
if( w == 0 || h == 0 ){
ofLog(OF_LOG_ERROR, "in setFromPixels, w and h cannot = 0");
return;
}
if( !bAllocated || w != width || h != height ) {
ofLog(OF_LOG_NOTICE, "in setFromPixels, reallocating to match dimensions");
allocate(w,h);
}
if( w == width && h == height ) {
ofRectangle lastROI = getROI();
if( cvGrayscaleImage == NULL ) {
cvGrayscaleImage = cvCreateImage( cvSize(width,height), IPL_DEPTH_8U, 1 );
}
resetImageROI(cvGrayscaleImage);
// copy _pixels into cvGrayscaleImage
for( int i=0; i < height; i++ ) {
memcpy( cvGrayscaleImage->imageData + (i*cvGrayscaleImage->widthStep),
_pixels + (i*w),
width );
}
convertGrayToFloat(cvGrayscaleImage, cvImage);
setROI(lastROI);
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in setFromPixels, size mismatch");
}
}
//--------------------------------------------------------------------------------
IplImage* ofxCvFloatImage::getCv8BitsImage() {
if( !bAllocated ){
ofLog(OF_LOG_WARNING, "in getCv8BitsImage, image is not allocated");
}
if(bPixelsDirty) {
if( cvGrayscaleImage == NULL ) {
cvGrayscaleImage = cvCreateImage( cvSize(width,height), IPL_DEPTH_8U, 1 );
}
ofRectangle lastROI = getROI();
resetImageROI(cvGrayscaleImage);
convertFloatToGray(cvImage, cvGrayscaleImage);
setROI(lastROI);
}
return cvGrayscaleImage;
}
//--------------------------------------------------------------------------------
void ofxCvFloatImage::setFromPixels( unsigned char* _pixels, int w, int h ) {
// This sets the internal image ignoring any ROI
if( w == width && h == height ) {
pushROI();
if( cvGrayscaleImage == NULL ) {
cvGrayscaleImage = cvCreateImage( cvSize(width,height), IPL_DEPTH_8U, 1 );
}
resetImageROI(cvGrayscaleImage);
// copy _pixels into cvGrayscaleImage
for( int i=0; i < height; i++ ) {
memcpy( cvGrayscaleImage->imageData + (i*cvGrayscaleImage->widthStep),
_pixels + (i*w),
width );
}
convertGrayToFloat(cvGrayscaleImage, cvImage);
popROI();
flagImageChanged();
} else {
ofLog(OF_LOG_ERROR, "in setFromPixels, size mismatch");
}
}
