Differences

no way to compare when less than two revisions

This shows you the differences between two versions of the page.

@@ Line 1: / Line 1: @@
+======Picture File Format======
+The cybiko internal graphics memory format is
+very simple. It is exactly 4000 bytes. (160x100/4)
+It is formatted left to right, top to bottom,
+pixels per byte, most significant bits to the left,
+=white,1=light,2=dark,3=black:
+This is an exact representation of the 2bpp used by the LCD graphics display.
+<code>
+ i.e. $E4 =
+ pixel 0,0 = black
+ pixel 1,0 = dark
+ pixel 2,0 = light
+ pixel 3,0 = white
+</code>
+The full screen *.pic files that are created with
+the SDK Converter or the CyberLoad Converter are
+the same format except 8 header bytes are added
+or 4008 bytes total.
+Example code snippet that will save the screen to a file.
+<code c>
+void SaveScreenShot(struct DisplayGraphics* gfx,char* filename)
+{
+	int err;
+        //output file
+        struct FileOutput* pFile;
+        //allocate output file structure
+        pFile=(struct FileOutput*)malloc(sizeof(struct FileOutput));
+        //construct output file
+        FileOutput_ctor(pFile);
+        //open output file
+        FileOutput_open(pFile,filename,TRUE);
+        //write the header
+        FileOutput_write_byte(pFile,0x02);//this is a pic file
+        FileOutput_write_byte(pFile,0x01);//only one picture in file
+        FileOutput_write_byte(pFile,0xA0);//width of 160
+        FileOutput_write_byte(pFile,0x64);//height of 100
+        FileOutput_write_byte(pFile,0x00);//left side
+        FileOutput_write_byte(pFile,0x00);//top side
+        FileOutput_write_byte(pFile,0xA0);//width
+        FileOutput_write_byte(pFile,0x64);//height
+        //write pixel information
+        err = FileOutput_write(pFile,DisplayGraphics_get_buf_addr(gfx),4000) != 4000;
+        //destroy the file struct
+        FileOutput_dtor(pFile,FREE_MEMORY);
+	beep( err ? BEEP_ERROR : BEEP_OK );
+}
+</code>
+{{tag>cybiko}}