fixed subimage logic

amscppimglib4.code-workspace

@@ -3,9 +3,6 @@
 		{
 			"path": "."
 		},
-		{
-			"path": "../../sourceprojs23/amsimglib3"
-		},
 		{
 			"path": "../amscimglib4"
 		},

include/amscppimglib4/amscppimglib4.hpp

@@ -115,6 +115,12 @@ namespace ams
     int read_image(const char *fname, amsimage* image);
     int write_image(const char *fname, amsimage* image);
 
+    //functions to manipulate png compressed images in memory
+    int image_to_pngbytes(amsimage *image, unsigned char *pngbytes, long bytes_available, long *bytes_written);
+    long image_to_pngbytes_bytesneeded(amsimage *image);
+    int pngbytes_to_image(unsigned char *pngbytes, long bufferlength, amsimage *image);
+    
+
     class amsbitplane
     {
         public:
@@ -216,8 +222,6 @@ namespace ams
     };
 
 
-
-
 }; //end namespace ams
 
 #include <amscppimglib4/amscppimglib4_tests.hpp>

src/amscppimglib4/amscppimglib4_intlutil.cpp

@@ -22,12 +22,12 @@ namespace imglib4
         int64_t I,I0,I1,Is,N,Ix,Iy,Ia,Ib;
         int dx,dy;
 
-        dx = Nxfrom;
-        dx = (dx>(Nxto-offsetx)) ? (Nxto-offsetx) : dx;
+        dx = Nxto;
+        dx = (dx>(Nxfrom-offsetx)) ? (Nxfrom-offsetx) : dx;
         dx = (dx<0) ? 0 : dx;
 
-        dy = Nyfrom;
-        dy = (dy>(Nyto-offsety)) ? (Nyto-offsety) : dy;
+        dy = Nyto;
+        dy = (dy>(Nyfrom-offsety)) ? (Nyfrom-offsety) : dy;
         dy = (dy<0) ? 0 : dy;
 
         N = dx*dy;
@@ -41,8 +41,8 @@ namespace imglib4
             Ix = I%dx;
             Iy = I/dx;
 
-            Ia = (Ix+offsetx) + Nxto*(Iy+offsety);
-            Ib = Ix + Nxfrom*Iy;
+            Ia = (Ix) + Nxto*(Iy);
+            Ib = (Ix+offsetx) + Nxfrom*(Iy+offsety);
 
             datato[0 + 4*Ia] = datafrom[0 + 4*Ib];
             datato[1 + 4*Ia] = datafrom[1 + 4*Ib];
@@ -70,12 +70,12 @@ namespace imglib4
         if(datato==NULL) return;
         if(datafrom==NULL) return;
 
-        dx = Nxfrom;
-        dx = (dx>(Nxto-offsetx)) ? (Nxto-offsetx) : dx;
+        dx = Nxto;
+        dx = (dx>(Nxfrom-offsetx)) ? (Nxfrom-offsetx) : dx;
         dx = (dx<0) ? 0 : dx;
 
-        dy = Nyfrom;
-        dy = (dy>(Nyto-offsety)) ? (Nyto-offsety) : dy;
+        dy = Nyto;
+        dy = (dy>(Nyfrom-offsety)) ? (Nyfrom-offsety) : dy;
         dy = (dy<0) ? 0 : dy;
 
         N = dx*dy;
@@ -179,12 +179,12 @@ namespace imglib4
         int64_t I,I0,I1,Is,N,Ix,Iy,Ia,Ib;
         int dx,dy;
 
-        dx = Nxfrom;
-        dx = (dx>(Nxto-offsetx)) ? (Nxto-offsetx) : dx;
+        dx = Nxto;
+        dx = (dx>(Nxfrom-offsetx)) ? (Nxfrom-offsetx) : dx;
         dx = (dx<0) ? 0 : dx;
 
-        dy = Nyfrom;
-        dy = (dy>(Nyto-offsety)) ? (Nyto-offsety) : dy;
+        dy = Nyto;
+        dy = (dy>(Nyfrom-offsety)) ? (Nyfrom-offsety) : dy;
         dy = (dy<0) ? 0 : dy;
 
         N = dx*dy;
@@ -198,8 +198,11 @@ namespace imglib4
             Ix = I%dx;
             Iy = I/dx;
 
-            Ia = Ipto + Npto*((Ix+offsetx) + Nxto*(Iy+offsety));
-            Ib = Ipfrom + Npfrom*(Ix + Nxfrom*Iy);
+            // Ia = Ipto + Npto*((Ix+offsetx) + Nxto*(Iy+offsety));
+            // Ib = Ipfrom + Npfrom*(Ix + Nxfrom*Iy);
+
+            Ia = Ipto + Npto*((Ix) + Nxto*(Iy));
+            Ib = Ipfrom + Npfrom*((Ix+offsetx) + Nxfrom*(Iy+offsety));
             
             datato[Ia] = datafrom[Ib];
         }
@@ -228,12 +231,12 @@ namespace imglib4
         if(datato==NULL) return;
         if(datafrom==NULL) return;
 
-        dx = Nxfrom;
-        dx = (dx>(Nxto-offsetx)) ? (Nxto-offsetx) : dx;
+        dx = Nxto;
+        dx = (dx>(Nxfrom-offsetx)) ? (Nxfrom-offsetx) : dx;
         dx = (dx<0) ? 0 : dx;
 
-        dy = Nyfrom;
-        dy = (dy>(Nyto-offsety)) ? (Nyto-offsety) : dy;
+        dy = Nyto;
+        dy = (dy>(Nyfrom-offsety)) ? (Nyfrom-offsety) : dy;
         dy = (dy<0) ? 0 : dy;
 
         N = dx*dy;

src/amscppimglib4/amscppimglib4_pngbytes.cpp

@@ -0,0 +1,86 @@
+
+#include <amscppimglib4/amscppimglib4.hpp>
+#include <amscppimglib4/amscppimglib4_intlutil.hpp>
+#include <amscimglib4/amscimglib4.h>
+
+namespace ams
+{
+
+    //functions to manipulate png compressed images in memory
+    
+    long image_to_pngbytes_bytesneeded(amsimage *image)
+    {
+        long ret = 0;
+        amscimglib4_image dummyimg;
+        
+        dummyimg.data = image->data;
+        dummyimg.sizex = image->Nx;
+        dummyimg.sizey = image->Ny;
+
+        ret = amscimglib4_pngbytebufferlen(&dummyimg);
+        
+
+        dummyimg.data = NULL;
+        dummyimg.sizex = 0;
+        dummyimg.sizey = 0;
+
+        return ret;
+    }
+    
+    int image_to_pngbytes(amsimage *image, unsigned char *pngbytes, long bytes_available, long *bytes_written)
+    {
+        int ret = amsimage_success;
+        long lbytes_written;
+        amscimglib4_image dummyimg;
+        int res;
+
+        dummyimg.data = image->data;
+        dummyimg.sizex = image->Nx;
+        dummyimg.sizey = image->Ny;
+
+        res = amscimglib4_pngbytebuffer_from_img(&dummyimg,pngbytes,bytes_available, &lbytes_written);
+        if(bytes_written!=NULL) *bytes_written = lbytes_written;
+        if(res==amscimglib4_failure)
+        {
+            ret = amsimage_failure;
+        }
+
+        dummyimg.data = NULL;
+        dummyimg.sizex = 0;
+        dummyimg.sizey = 0;
+        
+
+        return ret;
+    }
+
+
+
+    int pngbytes_to_image(unsigned char *pngbytes, long bufferlength, amsimage *image)
+    {
+        int ret = amsimage_success;
+        int res;
+        amscimglib4_image *dummyimg = NULL;
+
+        amscimglib4_image_new(&dummyimg,1,1);
+
+        res = amscimglib4_pngbytebuffer_to_img(dummyimg,pngbytes,bufferlength);
+        if(res == amscimglib4_failure)
+        {
+            ret = amsimage_failure;
+            return ret; 
+        }
+
+        image->resize(dummyimg->sizex,dummyimg->sizey);
+        imglib4::amsimage_region_copy(
+            image->data,
+            image->Nx,image->Ny,
+            dummyimg->data,dummyimg->sizex,dummyimg->sizey,0,0
+        );
+
+        
+        amscimglib4_image_delete(&dummyimg);
+
+        return ret;
+    }
+
+};