X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=image.hpp;h=dc53ec990ee3a19f931f5e9160269c7e0c875169;hb=1c35c914cf934c957664d9692a099634aacc4e44;hp=e02abed08d6d667e54263734f274f7793a8d96bd;hpb=c4c0be53e8151a61529822c1c11a99fad3f6ec20;p=apitrace

diff --git a/image.hpp b/image.hpp
index e02abed..dc53ec9 100644
--- a/image.hpp
+++ b/image.hpp
@@ -65,15 +65,35 @@ public:
         return flipped ? pixels + (height - 1)*width*channels : pixels;
     }
 
+    inline const unsigned char *start(void) const {
+        return flipped ? pixels + (height - 1)*width*channels : pixels;
+    }
+
     inline unsigned char *end(void) {
         return flipped ? pixels - width*channels : pixels + height*width*channels;
     }
 
+    inline const unsigned char *end(void) const {
+        return flipped ? pixels - width*channels : pixels + height*width*channels;
+    }
+
     inline signed stride(void) const {
         return flipped ? -width*channels : width*channels;
     }
 
     bool writeBMP(const char *filename) const;
+
+    void writePNM(std::ostream &os, const char *comment = NULL) const;
+
+    inline bool writePNM(const char *filename, const char *comment = NULL) const {
+        std::ofstream os(filename, std::ofstream::binary);
+        if (!os) {
+            return false;
+        }
+        writePNM(os, comment);
+        return true;
+    }
+
     bool writePNG(const char *filename) const;
 
     double compare(Image &ref);