Const policed the grayscale lib & plugin

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4985 a1c6a512-1295-4272-9138-f99709370657

8 files changed, 24 insertions, 22 deletions

diff --git a/apps/plugins/lib/gray.h b/apps/plugins/lib/gray.h
index c8a9afc..52d6f6c 100644
--- a/apps/plugins/lib/gray.h
+++ b/apps/plugins/lib/gray.h
@@ -362,7 +362,7 @@ void gray_fillrect(int x, int y, int nx, int ny);
  
  This is the only drawing function NOT using the drawinfo.
  */
-void gray_drawgraymap(unsigned char *src, int x, int y, int nx, int ny,
+void gray_drawgraymap(const unsigned char *src, int x, int y, int nx, int ny,
                       int stride);
 
 /*---------------------------------------------------------------------------
@@ -384,7 +384,7 @@ void gray_drawgraymap(unsigned char *src, int x, int y, int nx, int ny,
  The <stride> parameter is useful if you want to show only a part of a
  bitmap. It should always be set to the "row length" of the bitmap.
  */
-void gray_drawbitmap(unsigned char *src, int x, int y, int nx, int ny,
+void gray_drawbitmap(const unsigned char *src, int x, int y, int nx, int ny,
                      int stride);
 
 /*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
@@ -409,14 +409,14 @@ void gray_setfont(int newfont);
  This works exactly the same way as the core lcd_getstringsize(), only that
  it uses the selected font for grayscale.
  */
-int gray_getstringsize(unsigned char *str, int *w, int *h);
+int gray_getstringsize(const unsigned char *str, int *w, int *h);
 
 /*---------------------------------------------------------------------------
  Display text starting at (x, y) with the current font and drawinfo
  ----------------------------------------------------------------------------
  The drawmode is used as described for gray_set_drawmode()
  */
-void gray_putsxy(int x, int y, unsigned char *str);
+void gray_putsxy(int x, int y, const unsigned char *str);
 
 /*===========================================================================
  Private functions and definitions, for use within the grayscale core only
@@ -458,9 +458,9 @@ extern _tGraybuf *_graybuf;
 extern short _gray_random_buffer;
 
 /* Global function pointers */
-extern void (*_gray_pixelfuncs[4])(int x, int y, unsigned long pattern);
-extern void (*_gray_blockfuncs[4])(unsigned char *address, unsigned mask,
-                                   unsigned bits);
+extern void (* const _gray_pixelfuncs[4])(int x, int y, unsigned long pattern);
+extern void (* const _gray_blockfuncs[4])(unsigned char *address, unsigned mask,
+                                          unsigned bits);
 
 #endif /* HAVE_LCD_BITMAP */
 #endif /* SIMULATOR */
diff --git a/apps/plugins/lib/gray_blockfuncs.c b/apps/plugins/lib/gray_blockfuncs.c
index 47ff167..5f4f905 100644
--- a/apps/plugins/lib/gray_blockfuncs.c
+++ b/apps/plugins/lib/gray_blockfuncs.c
@@ -36,8 +36,8 @@ static void _writeblockfg(unsigned char *address, unsigned mask, unsigned bits);
 static void _writeblockbg(unsigned char *address, unsigned mask, unsigned bits);
 
 /* Block function pointer array */
-void (*_gray_blockfuncs[4])(unsigned char *address, unsigned mask,
-                              unsigned bits) = {
+void (* const _gray_blockfuncs[4])(unsigned char *address, unsigned mask,
+                                   unsigned bits) = {
     _invertblock, _writeblockfg, _writeblockbg, _writeblock
 };
 
diff --git a/apps/plugins/lib/gray_drawbitmap.c b/apps/plugins/lib/gray_drawbitmap.c
index 5ddb195..376f76d 100644
--- a/apps/plugins/lib/gray_drawbitmap.c
+++ b/apps/plugins/lib/gray_drawbitmap.c
@@ -48,12 +48,13 @@
  The <stride> parameter is useful if you want to show only a part of a
  bitmap. It should always be set to the "row length" of the bitmap.
  */
-void gray_drawbitmap(unsigned char *src, int x, int y, int nx, int ny,
+void gray_drawbitmap(const unsigned char *src, int x, int y, int nx, int ny,
                      int stride)
 {
     int shift;
     unsigned bits, mask_top, mask_bottom;
-    unsigned char *src_col, *dst, *dst_col;
+    const unsigned char *src_col;
+    unsigned char *dst, *dst_col;
     void (*blockfunc)(unsigned char *address, unsigned mask, unsigned bits);
 
     if ((unsigned) x >= (unsigned) _graybuf->width
diff --git a/apps/plugins/lib/gray_drawgraymap.c b/apps/plugins/lib/gray_drawgraymap.c
index dc33446..c8ee93f 100644
--- a/apps/plugins/lib/gray_drawgraymap.c
+++ b/apps/plugins/lib/gray_drawgraymap.c
@@ -30,16 +30,16 @@
 #include "gray.h"
 
 /* Prototypes */
-static void _writearray(unsigned char *address, unsigned char *src, int stride,
-                        unsigned mask);
+static void _writearray(unsigned char *address, const unsigned char *src,
+                        int stride, unsigned mask);
 
 /* Write an 8-pixel block, defined by their brightnesses in a graymap.
  * Address is the byte in the first bitplane, src is the graymap start address,
  * stride is the increment for the graymap to get to the next pixel, mask
  * determines which pixels of the destination block are changed. For "0" bits,
  * the src address is not incremented! */
-static void _writearray(unsigned char *address, unsigned char *src, int stride,
-                        unsigned mask)
+static void _writearray(unsigned char *address, const unsigned char *src,
+                        int stride, unsigned mask)
 {
     unsigned long pat_stack[8];
     register unsigned char *end_addr;
@@ -217,12 +217,13 @@ asm (
 
  This is the only drawing function NOT using the drawinfo.
  */
-void gray_drawgraymap(unsigned char *src, int x, int y, int nx, int ny,
+void gray_drawgraymap(const unsigned char *src, int x, int y, int nx, int ny,
                       int stride)
 {
     int shift;
     unsigned mask_top, mask_bottom;
-    unsigned char *src_row, *dst, *dst_row;
+    const unsigned char *src_row;
+    unsigned char *dst, *dst_row;
 
     if ((unsigned) x >= (unsigned) _graybuf->width
         || (unsigned) y >= (unsigned) _graybuf->height)
diff --git a/apps/plugins/lib/gray_getstringsize.c b/apps/plugins/lib/gray_getstringsize.c
index 977b912..5b6d3e7 100644
--- a/apps/plugins/lib/gray_getstringsize.c
+++ b/apps/plugins/lib/gray_getstringsize.c
@@ -36,7 +36,7 @@
  This works exactly the same way as the core lcd_getstringsize(), only that
  it uses the selected font for grayscale.
  */
-int gray_getstringsize(unsigned char *str, int *w, int *h)
+int gray_getstringsize(const unsigned char *str, int *w, int *h)
 {
     int ch;
     int width = 0;
diff --git a/apps/plugins/lib/gray_pixelfuncs.c b/apps/plugins/lib/gray_pixelfuncs.c
index cade096..3cdcccd 100644
--- a/apps/plugins/lib/gray_pixelfuncs.c
+++ b/apps/plugins/lib/gray_pixelfuncs.c
@@ -34,7 +34,7 @@ static void _writepixel(int x, int y, unsigned long pattern);
 static void _invertpixel(int x, int y, unsigned long pattern);
 
 /* function pointer array */
-void (*_gray_pixelfuncs[4])(int x, int y, unsigned long pattern) = {
+void (* const _gray_pixelfuncs[4])(int x, int y, unsigned long pattern) = {
     _invertpixel, _writepixel, _writepixel, _writepixel
 };
 
diff --git a/apps/plugins/lib/gray_putsxy.c b/apps/plugins/lib/gray_putsxy.c
index 18cf2ba..51f1ca1 100644
--- a/apps/plugins/lib/gray_putsxy.c
+++ b/apps/plugins/lib/gray_putsxy.c
@@ -34,7 +34,7 @@
  ----------------------------------------------------------------------------
  The drawmode is used as described for gray_set_drawmode()
  */
-void gray_putsxy(int x, int y, unsigned char *str)
+void gray_putsxy(int x, int y, const unsigned char *str)
 {
     int ch, width;
     bitmap_t *bits;
@@ -56,7 +56,7 @@ void gray_putsxy(int x, int y, unsigned char *str)
         bits = pf->bits + (pf->offset ? pf->offset[ch] 
                                       : MULU16(pf->height, ch));
 
-        gray_drawbitmap((unsigned char*) bits, x, y, width, pf->height,
+        gray_drawbitmap((const unsigned char*) bits, x, y, width, pf->height,
                         width);
         x += width;
     }
diff --git a/apps/plugins/lib/gray_screendump.c b/apps/plugins/lib/gray_screendump.c
index 8968007..fdc88b8 100644
--- a/apps/plugins/lib/gray_screendump.c
+++ b/apps/plugins/lib/gray_screendump.c
@@ -29,7 +29,7 @@
 #ifdef HAVE_LCD_BITMAP /* and also not for the Player */
 #include "gray.h"
 
-static unsigned char bmpheader[] =
+static const unsigned char bmpheader[] =
 {
     0x42, 0x4d, 0xba, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, 0x00,
     0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x40, 0x00,