Experimental new raster

Try to output raster using modern graphinc functions  'GS ( L'. Epson
says it is indended for whole future, and that old 'GS v' will not be
supported. However experiment shows that for cheap zijiang zj-58 it
doesn't work.

To try, set RASTER_TYPE=New when configuring
(i.e. cmake ... -DRASTER_TYPE=New)

CMakeLists.txt

@@ -34,6 +34,13 @@ if ( CMAKE_BUILD_TYPE STREQUAL "Debug" )
 	endif ()
 endif ()
 
+# experimental rastering
+SET ( RASTER_TYPE Old CACHE STRING "Flavor how to output the raster images" )
+set_property ( CACHE RASTER_TYPE PROPERTY STRINGS "Old" "New" )
+if ( RASTER_TYPE STREQUAL "New" )
+	target_compile_definitions ( rastertozj PRIVATE NEWRASTER )
+endif()
+
 # build ppds
 if ( NOT DEFINED PPDC )
 	find_program ( PPDC ppdc )

rastertozj.c

@@ -340,10 +340,37 @@ static inline void send_raster(const unsigned char *pBuf, int width8,
                                int height) {
   if (!height)
     return;
-  DEBUGPRINT("Raster block %dx%d pixels\n", width8*8, height);
+  DEBUGPRINT("Raster block %dx%d pixels\n", width8 * 8, height);
+
+#ifdef NEWRASTER
+  // experimental - output raster according to new ESC/POS specification,
+  // using graphic function.
+  // It may work with kind of epson, but zijiang fails, oops...
+  // download raster - function 112
+  SendCommand("\x1d(L"); // GS ( L
+  mputnum(width8 * height + 10); // pL, pH
+  mputchar ('0'); // m=48
+  mputchar (112); // fn
+  mputchar ('0'); // monochrome digital
+  mputchar ('\1'); // bx
+  mputchar ('\1'); // by
+  mputchar ('1'); // с (color)= 1
+  mputnum(width8*8); // xL, xH
+  mputnum(height); // yL, yH
+
+  outputarray((char *)pBuf, width8 * height);
+
+  // print raster - function 50
+  SendCommand("\x1d(L");
+  mputnum (2); // pL, pH
+  mputchar (48); // m
+  mputchar (50); // function = 50
+
+#else
   sendRasterHeader(width8, height);
   outputarray((char *)pBuf, width8 * height);
   flushBuffer();
+#endif
 }
 
 #define EXITPRINT(CODE)                                                        \