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-rw-r--r--rotord/src/image.h242
1 files changed, 242 insertions, 0 deletions
diff --git a/rotord/src/image.h b/rotord/src/image.h
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+++ b/rotord/src/image.h
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+#include <cv.h>
+
+namespace Rotor {
+ class pixeltables{
+ //handy pixel arithmetic lookup tables as nested arrays
+ //so - pixels.add[0x78][0x66]; will give the precalculated result of adding with saturation
+ // pixels.mono_weights[0][0x100]; will give the red component to convert to mono
+ public:
+ pixeltables(){
+ add=new uint8_t*[256];
+ multiply=new uint8_t*[256];
+ for (int i=0;i<256;i++){
+ add[i]=new uint8_t[256];
+ multiply[i]=new uint8_t[256];
+ for (int j=0;j<256;j++){
+ add[i][j]=(uint8_t)min(i+j,0xFF);
+ multiply[i][j]=(uint8_t)((((float)i)/255.0f)*(((float)j)/255.0f)*255.0f);
+ }
+ }
+ mono_weights=new uint8_t*[3];
+ float weights[3]={0.2989, 0.5870, 0.1140};
+ for (int i=0;i<3;i++) {
+ mono_weights[i]=new uint8_t[256];
+ for (int j=0;j<256;j++){
+ mono_weights[i][j]=(uint8_t)(((float)j)*weights[i]);
+ }
+ }
+ }
+ virtual ~pixeltables(){
+ for (int i=0;i<256;i++){
+ delete[] add[i];
+ delete[] multiply[i];
+ }
+ delete[] add;
+ delete[] multiply;
+ for (int i=0;i<3;i++) {
+ delete[] mono_weights[i];
+ }
+ delete[] mono_weights;
+ }
+ uint8_t **add;
+ uint8_t **multiply;
+ uint8_t **mono_weights;
+ };
+ static pixeltables pixels;
+ class cvImage{
+ public:
+ bool setup(int _w,int _h){ //set up with internal data
+ cv::Mat mat =cv::Mat(_w, _h, CV_8UC1);
+ //is this goint to save time or cost it in the long run?
+ //wrap cv::Mat or use it directly?
+ //its reference counted etc.. could save a lot of headaches
+
+ /*
+ if (w!=_w||h!=_h||!ownsRGBdata||!ownsAdata||!ownsZdata){
+ free();
+ w=_w;
+ h=_h;
+ RGBdata=new uint8_t[w*h*3];
+ Adata=new uint8_t[w*h];
+ Zdata=new uint16_t[w*h];
+ ownsRGBdata=ownsAdata=ownsZdata=true;
+ return true;
+ }
+ else return false;
+ */
+ return false;
+ }
+ uint8_t *RGBdata;
+ uint8_t *Adata;
+ uint16_t *Zdata;
+ int h,w;
+ bool ownsRGBdata,ownsAdata,ownsZdata; //better done through auto_ptr?
+ };
+ class Image{
+ public:
+ Image(){
+ zero();
+ };
+ Image(int _w,int _h){
+ zero();
+ setup(_w,_h);
+ };
+ ~Image() {
+ free();
+ };
+ void free(){
+ if (RGBdata&&ownsRGBdata) delete[] RGBdata;
+ if (Adata&&ownsAdata) delete[] Adata;
+ if (Zdata&&ownsZdata) delete[] Zdata;
+ zero();
+ }
+ void zero(){
+ RGBdata=nullptr;
+ Adata=nullptr;
+ Zdata=nullptr;
+ w=0;
+ h=0;
+ ownsRGBdata=ownsAdata=ownsZdata=false;
+ }
+ bool setup(int _w,int _h){ //set up with internal data
+ if (w!=_w||h!=_h||!ownsRGBdata||!ownsAdata||!ownsZdata){
+ free();
+ w=_w;
+ h=_h;
+ RGBdata=new uint8_t[w*h*3];
+ Adata=new uint8_t[w*h];
+ Zdata=new uint16_t[w*h];
+ ownsRGBdata=ownsAdata=ownsZdata=true;
+ return true;
+ }
+ else return false;
+ }
+ bool setup_fromRGB(int _w,int _h,uint8_t *pRGBdata){ //possibility of just resetting pointer?
+ if (w!=_w||h!=_h||ownsRGBdata||!ownsAdata||!ownsZdata){
+ free();
+ w=_w;
+ h=_h;
+ RGBdata=pRGBdata;
+ Adata=new uint8_t[w*h];
+ Zdata=new uint16_t[w*h];
+ ownsRGBdata=false;
+ ownsAdata=ownsZdata=true;
+ return true;
+ }
+ return false;
+ }
+ Image* clone(){
+ Image *t=new Image(w,h);
+ for (int i=0;i<w*h*3;i++) {
+ t->RGBdata[i]=RGBdata[i];
+ }
+ return t;
+ }
+ Image & operator+=(const Image &other) {
+ if (other.w!=w||other.h!=h) {
+ cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+ }
+ else {
+ for (int i=0;i<w*h*3;i++){
+ //calculate with tables
+ RGBdata[i]=pixels.add[RGBdata[i]][other.RGBdata[i]];
+ }
+ }
+ return *this;
+ }
+ Image & operator*=(const Image &other) {
+ if (other.w!=w||other.h!=h) {
+ cerr<<"Rotor: cannot multiply images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+ }
+ else {
+ for (int i=0;i<w*h*3;i++){
+ //calculate with tables
+ uint8_t p1=RGBdata[i];
+ uint8_t p2=other.RGBdata[i];
+ RGBdata[i]=pixels.multiply[RGBdata[i]][other.RGBdata[i]];
+ }
+ }
+ return *this;
+ }
+ Image & add_wrap(const Image &other) {
+ if (other.w!=w||other.h!=h) {
+ cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
+ }
+ else {
+ for (int i=0;i<w*h*3;i++){
+ //creates rainbow overload
+ RGBdata[i]=(unsigned char)(((int)other.RGBdata[i]+(int)RGBdata[i]));
+ }
+ }
+ return *this;
+ }
+ //scalar operations allocate a new image.
+ //maybe this could not be the case if the data is owned by this image?
+ //need to look into auto_ptr
+ Image & operator*=(const float &amount) {
+ uint8_t *LUT=new uint8_t[256];
+ for (int i=0;i<256;i++) {
+ LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i*amount)));
+ }
+ for (int i=0;i<w*h*3;i++){
+ //calculate with table
+ RGBdata[i]=LUT[RGBdata[i]];
+ }
+ delete[] LUT;
+ return *this;
+ }
+ Image * operator*(const float &amount) {
+ Image *other=new Image(w,h);
+ uint8_t *LUT=new uint8_t[256];
+ for (int i=0;i<256;i++) {
+ LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i*amount)));
+ }
+ for (int i=0;i<w*h*3;i++){
+ other->RGBdata[i]=LUT[RGBdata[i]];
+ }
+ delete[] LUT;
+ return other;
+ }
+ Image * operator+(const float &amount) {
+ Image *other=new Image(w,h);
+ uint8_t *LUT=new uint8_t[256];
+ for (int i=0;i<256;i++) {
+ LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i+(amount*255.0f))));
+ }
+ for (int i=0;i<w*h*3;i++){
+ other->RGBdata[i]=LUT[RGBdata[i]];
+ }
+ delete[] LUT;
+ return other;
+ }
+ Image * operator-(const float &amount) {
+ Image *other=new Image(w,h);
+ uint8_t *LUT=new uint8_t[256];
+ for (int i=0;i<256;i++) {
+ LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i-(amount*255.0f))));
+ }
+ for (int i=0;i<w*h*3;i++){
+ other->RGBdata[i]=LUT[RGBdata[i]];
+ }
+ delete[] LUT;
+ return other;
+ }
+ Image * operator/(const float &amount) {
+ Image *other=new Image(w,h);
+ uint8_t *LUT=new uint8_t[256];
+ for (int i=0;i<256;i++) {
+ LUT[i]=(uint8_t)min(0xFF,max(0,(int)(i/amount)));
+ }
+ for (int i=0;i<w*h*3;i++){
+ other->RGBdata[i]=LUT[RGBdata[i]];
+ }
+ delete[] LUT;
+ return other;
+ }
+ uint8_t *RGBdata;
+ uint8_t *Adata;
+ uint16_t *Zdata;
+ int h,w;
+ bool ownsRGBdata,ownsAdata,ownsZdata; //better done through auto_ptr?
+ };
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 21:23:08 +0000