Added vim modelines to all files.

Set them to 2-space indent, I hope this is ok.


git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1161 416bcca6-2ee7-4201-b75f-2eb2f807beb1

miscfileformats.c

@@ -1,3 +1,5 @@
+/* vim:expandtab:ts=2 sw=2:
+*/
 /*  Grafx2 - The Ultimate 256-color bitmap paint program
 
     Copyright 2009 Petter Lindquist
@@ -2539,8 +2541,55 @@ void Save_C64(void)
 
 // SCR (Amstrad CPC)
 
+void Test_SCR(void)
+{
+	// Mmh... not sure what we could test. Any idea ?
+	// The palette file can be tested, if it exists and have the right size it's
+	// ok. But if it's not there the pixel data may still be valid. And we can't
+	// use the filesize as this depends on the screen format.
+	
+	// An AMSDOS header would be a good indication but in some cases it may not
+	// be there
+}
+
+void Load_SCR(void)
+{
+	// The Amstrad CPC screen memory is mapped in a weird mode, somewhere
+	// between bitmap and textmode. Basically the only way to decode this is to
+	// emulate the video chip and read the bytes as needed...
+	// Moreover, the hardware allows the screen to have any size from 8x1 to
+	// 800x273 pixels, and there is no indication of that in the file besides
+	// its size. It can also use any of the 3 screen modes. Fortunately this
+	// last bit of information is stored in the palette file.
+	// Oh, and BTW, the picture can be offset, and it's even usual to do it,
+	// because letting 128 pixels unused at the beginning of the file make it a
+	// lot easier to handle screens using more than 16K of VRam.
+	// The pixel encoding change with the video mode so we have to know that
+	// before attempting to load anything...
+	// As if this wasn't enough, Advanced OCP Art Studio, the reference tool on
+	// Amstrad, can use RLE packing when saving files, meaning we also have to
+	// handle that.
+	
+	// All this mess enforces us to load (and unpack if needed) the file to a
+	// temporary 32k buffer before actually decoding it.
+	
+	// 1) Seek for a palette
+	// 2) If palette found get screenmode from there, else ask user
+	// 3) ask user for screen size (or register values)
+	// 4) Load color data from palette (if found)
+	// 5) Close palette
+	// 6) Open the file
+	// 7) Run around the screen to untangle the pixeldata
+	// 8) Close the file
+}
+
 void Save_SCR(void)
 {
+	// TODO : Add possibility to set R9, R12, R13 values
+	// TODO : Add OCP packing support
+	// TODO : Add possibility to include AMSDOS header, with proper loading
+	// address guessed from r12/r13 values.
+	
 	unsigned char* output;
 	unsigned long outsize;
 	unsigned char r1;