Changeset 800eaf5 in mainline

Timestamp:

2006-11-21T16:17:23Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d6f270f

Parents:

abc9fc5

Message:

framebuffer cleanup

File:

• kernel/genarch/src/fb/fb.c (modified) (11 diffs)

kernel/genarch/src/fb/fb.c

@@ -98 +98 @@
 static void rgb_4byte(void *dst, int rgb)
 {
-        *(int *)dst = rgb;
+        *((int *) dst) = rgb;
 }
 
 static int byte4_rgb(void *src)
 {
-        return (*(int *)src) & 0xffffff;
+        return (*((int *) src)) & 0xffffff;
 }
 
@@ -134 +134 @@
 {
         /* 5-bit, 6-bits, 5-bits */ 
-        *((uint16_t *)(dst)) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 | BLUE(rgb, 5);
+        *((uint16_t *) dst) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 | BLUE(rgb, 5);
 }
 
@@ -154 +154 @@
 static void rgb_1byte(void *dst, int rgb)
 {
-        *(uint8_t *)dst = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 | BLUE(rgb, 3);
+        *((uint8_t *) dst) = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 | BLUE(rgb, 3);
 }
 
@@ -169 +169 @@
 static void putpixel(unsigned int x, unsigned int y, int color)
 {
-        (*rgb2scr)(&fbaddress[POINTPOS(x,y)], COLOR(color));
+        (*rgb2scr)(&fbaddress[POINTPOS(x, y)], COLOR(color));
 
         if (dbbuffer) {
                 int dline = (y + dboffset) % yres;
-                (*rgb2scr)(&dbbuffer[POINTPOS(x,dline)], COLOR(color));
+                (*rgb2scr)(&dbbuffer[POINTPOS(x, dline)], COLOR(color));
         }
 }
@@ -182 +182 @@
         if (dbbuffer) {
                 int dline = (y + dboffset) % yres;
-                return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x,dline)]));
-        }
-        return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x,y)]));
+                return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x, dline)]));
+        }
+        return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x, y)]));
 }
 
@@ -194 +194 @@
 
         for (y = 0; y < yres; y++) {
-                memcpy(&fbaddress[scanline*y], blankline, xres*pixelbytes);
+                memcpy(&fbaddress[scanline * y], blankline, xres * pixelbytes);
                 if (dbbuffer)
-                        memcpy(&dbbuffer[scanline*y], blankline, xres*pixelbytes);
+                        memcpy(&dbbuffer[scanline * y], blankline, xres * pixelbytes);
         }
 }
@@ -208 +208 @@
 
         if (dbbuffer) {
-                memcpy(&dbbuffer[dboffset*scanline], blankline, FONT_SCANLINES*scanline);
+                memcpy(&dbbuffer[dboffset * scanline], blankline, FONT_SCANLINES * scanline);
                 
                 dboffset = (dboffset + FONT_SCANLINES) % yres;
-                firstsz = yres-dboffset;
-
-                memcpy(fbaddress, &dbbuffer[scanline*dboffset], firstsz*scanline);
-                memcpy(&fbaddress[firstsz*scanline], dbbuffer, dboffset*scanline);
+                firstsz = yres - dboffset;
+
+                memcpy(fbaddress, &dbbuffer[scanline * dboffset], firstsz * scanline);
+                memcpy(&fbaddress[firstsz * scanline], dbbuffer, dboffset * scanline);
         } else {
                 memcpy((void *) fbaddress, (void *) &fbaddress[ROW_BYTES], scanline * yres - ROW_BYTES);
@@ -359 +359 @@
 {
         switch (bpp) {
-        case 8:
-                rgb2scr = rgb_1byte;
-                scr2rgb = byte1_rgb;
-                pixelbytes = 1;
-                break;
-        case 16:
-                rgb2scr = rgb_2byte;
-                scr2rgb = byte2_rgb;
-                pixelbytes = 2;
-                break;
-        case 24:
-                rgb2scr = rgb_3byte;
-                scr2rgb = byte3_rgb;
-                if (align)
+                case 8:
+                        rgb2scr = rgb_1byte;
+                        scr2rgb = byte1_rgb;
+                        pixelbytes = 1;
+                        break;
+                case 16:
+                        rgb2scr = rgb_2byte;
+                        scr2rgb = byte2_rgb;
+                        pixelbytes = 2;
+                        break;
+                case 24:
+                        rgb2scr = rgb_3byte;
+                        scr2rgb = byte3_rgb;
+                        if (align)
+                                pixelbytes = 4;
+                        else
+                                pixelbytes = 3;
+                        break;
+                case 32:
+                        rgb2scr = rgb_4byte;
+                        scr2rgb = byte4_rgb;
                         pixelbytes = 4;
-                else
-                        pixelbytes = 3;
-                break;
-        case 32:
-                rgb2scr = rgb_4byte;
-                scr2rgb = byte4_rgb;
-                pixelbytes = 4;
-                break;
-        default:
-                panic("Unsupported bpp.\n");
+                        break;
+                default:
+                        panic("Unsupported bpp.\n");
         }
         
@@ -410 +410 @@
 
         /* Allocate double buffer */
-        int totsize = scanline * yres;
-        int pages = SIZE2FRAMES(totsize);
-        int order;
-        if (pages == 1)
-                order = 0;
-        else
-                order = fnzb(pages - 1) + 1;
-
-        dbbuffer = frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
+        unsigned int order = fnzb(SIZE2FRAMES(ALIGN_UP(fbsize, FRAME_SIZE))) + 1;
+        dbbuffer = (uint8_t * ) frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
         if (!dbbuffer)
                 printf("Failed to allocate scroll buffer.\n");
@@ -427 +420 @@
         if (!blankline)
                 panic("Failed to allocate blank line for framebuffer.");
-        for (y=0; y < FONT_SCANLINES; y++) {
-                for (x=0; x < xres; x++) {
-                        (*rgb2scr)(&blankline[POINTPOS(x,y)], COLOR(BGCOLOR));
-                }
-        }
-
+        for (y = 0; y < FONT_SCANLINES; y++)
+                for (x = 0; x < xres; x++)
+                        (*rgb2scr)(&blankline[POINTPOS(x, y)], COLOR(BGCOLOR));
+        
         clear_screen();
 
@@ -443 +434 @@
         chardev_initialize("fb", &framebuffer, &fb_ops);
         stdout = &framebuffer;
-        
 }