lib:font:fbconsole: add custom font support for review

index b10503e..dad45c3 100644
@@ -22,8 +22,8 @@ struct fbc_priv {
 	struct param_d *par_font;
 	int par_font_val;
 
-	int font_width, font_height;
-	const u8 *fontdata;
+	struct font_desc font;
+
 	unsigned int cols, rows;
 	unsigned int x, y; /* cursor position */
 

@@ -84,7 +84,7 @@ static struct rgb colors[] = {
 	{ 255, 255, 255 },
 };
 
-static void drawchar(struct fbc_priv *priv, int x, int y, char c)
+static void drawchar(struct fbc_priv *priv, int x, int y, int c)
 {
 	void *buf;
 	int bpp = priv->fb->bits_per_pixel >> 3;

@@ -97,7 +97,8 @@ static void drawchar(struct fbc_priv *priv, int x, int y, char c)
 
 	buf = gui_screen_render_buffer(priv->sc);
 
-	inbuf = &priv->fontdata[c * priv->font_height];
+	i = find_font_index(&priv->font, c);
+	inbuf = priv->font.data + i;
 
 	line_length = priv->fb->line_length;
 

@@ -113,13 +114,13 @@ static void drawchar(struct fbc_priv *priv, int x, int y, char c)
 	rgb = &colors[bgcolor];
 	bgcolor = gu_rgb_to_pixel(priv->fb, rgb->r, rgb->g, rgb->b, 0xff);
 
-	for (i = 0; i < priv->font_height; i++) {
+	for (i = 0; i < priv->font.height; i++) {
 		uint8_t t = inbuf[i];
 		int j;
 
-		adr = buf + line_length * (y * priv->font_height + i) + x * priv->font_width * bpp;
+		adr = buf + line_length * (y * priv->font.height + i) + x * priv->font.width * bpp;
 
-		for (j = 0; j < priv->font_width; j++) {
+		for (j = 0; j < priv->font.width; j++) {
 			if (t & 0x80)
 				gu_set_pixel(priv->fb, adr, color);
 			else

@@ -137,10 +138,10 @@ static void video_invertchar(struct fbc_priv *priv, int x, int y)
 
 	buf = gui_screen_render_buffer(priv->sc);
 
-	gu_invert_area(priv->fb, buf, x * priv->font_width, y * priv->font_height,
-			priv->font_width, priv->font_height);
-	gu_screen_blit_area(priv->sc, x * priv->font_width, y * priv->font_height,
-			priv->font_width, priv->font_height);
+	gu_invert_area(priv->fb, buf, x * priv->font.width, y * priv->font.height,
+			priv->font.width, priv->font.height);
+	gu_screen_blit_area(priv->sc, x * priv->font.width, y * priv->font.height,
+			priv->font.width, priv->font.height);
 }
 
 static void printchar(struct fbc_priv *priv, int c)

@@ -174,9 +175,9 @@ static void printchar(struct fbc_priv *priv, int c)
 	default:
 		drawchar(priv, priv->x, priv->y, c);
 
-		gu_screen_blit_area(priv->sc, priv->x * priv->font_width,
-				priv->y * priv->font_height,
-				priv->font_width, priv->font_height);
+		gu_screen_blit_area(priv->sc, priv->x * priv->font.width,
+				priv->y * priv->font.height,
+				priv->font.width, priv->font.height);
 
 		priv->x++;
 		if (priv->x > priv->cols) {

@@ -188,7 +189,7 @@ static void printchar(struct fbc_priv *priv, int c)
 	if (priv->y > priv->rows) {
 		void *buf;
 		u32 line_length = priv->fb->line_length;
-		int line_height = line_length * priv->font_height;
+		int line_height = line_length * priv->font.height;
 
 		buf = gui_screen_render_buffer(priv->sc);
 

@@ -355,12 +356,10 @@ static int setup_font(struct fbc_priv *priv)
 		return -ENOENT;
 	}
 
-	priv->font_width = font->width;
-	priv->font_height = font->height;
-	priv->fontdata = font->data;
+	priv->font = *font;
 
-	priv->rows = fb->yres / priv->font_height - 1;
-	priv->cols = fb->xres / priv->font_width - 1;
+	priv->rows = fb->yres / priv->font.height - 1;
+	priv->cols = fb->xres / priv->font.width - 1;
 
 	return 0;
 }

index 62b1879..14af0d9 100644
@@ -12,20 +12,28 @@
 #define _VIDEO_FONT_H
 
 #include <param.h>
+#include <wchar.h>
 
+struct font_index {
+	wchar_t wc;
+	short index;
+};
 struct font_desc {
 	const char *name;
 	int width, height;
+	struct font_index *index;
 	const void *data;
 };
 
 extern const struct font_desc	font_vga_8x16,
 			font_7x14,
-			font_mini_4x6;
+			font_mini_4x6,
+			font_custom_16x;
 
 /* Max. length for the name of a predefined font */
 #define MAX_FONT_NAME	32
 
+extern int find_font_index(struct font_desc *font, int ch);
 extern const struct font_desc *find_font_enum(int n);
 extern struct param_d *add_param_font(struct device_d *dev,
 		int (*set)(struct param_d *p, void *priv),

index fe99871..60cb57e 100644
@@ -4113,4 +4113,5 @@ const struct font_desc font_7x14 = {
 	.width	= 7,
 	.height	= 14,
 	.data	= fontdata_7x14,
+	.index	= NULL,
 };

index 4717ead..0ba2921 100644
@@ -4626,5 +4626,6 @@ const struct font_desc font_vga_8x16 = {
 	.width	= 8,
 	.height	= 16,
 	.data	= fontdata_8x16,
+	.index	= NULL,
 };
 EXPORT_SYMBOL(font_vga_8x16);

204 lines not on this page · raw message

index 3ecb4fb..733d20a 100644
@@ -2152,4 +2152,5 @@ const struct font_desc font_mini_4x6 = {
 	.width	= 4,
 	.height	= 6,
 	.data	= fontdata_mini_4x6,
+	.index	= NULL,
 };

index 5a9d3f1..8d4df71 100644
@@ -7,6 +7,10 @@
  *	2001 - Documented with DocBook
  *	- Brad Douglas <[email protected]>
  *
+ *	2015 - Add custom font supports
+ *	- Du Huanpeng <[email protected]>
+ *
+ *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file COPYING in the main directory of this archive
  * for more details.

@@ -33,6 +37,10 @@ static const struct font_desc *fonts[] = {
 #undef NO_FONTS
     &font_mini_4x6,
 #endif
+#ifdef CONFIG_FONT_CUSTOM_16X
+#undef NO_FONTS
+    &font_custom_16x,
+#endif
 };
 
 #define num_fonts ARRAY_SIZE(fonts)

@@ -51,6 +59,31 @@ const struct font_desc *find_font_enum(int n)
 	return fonts[n];
 }
 
+int find_font_index(struct font_desc *font, int ch)
+{
+	int index;
+	if (font->index == NULL) {
+		index  = font->width + 7;
+		index /= 8;
+		index *= font->height;
+		index *= ch;
+	}
+	else {
+		/*
+		* FIXME:
+		* 1. use binary search instead!
+		* 2. how many chars in this font?
+		*/
+		index = 10 - 1;
+		while (index && font->index[index].wc != ch) index--;
+
+		/* return 0 if not found. */
+		index = font->index->index;
+	}
+
+	return index;
+}
+
 struct param_d *add_param_font(struct device_d *dev,
 		int (*set)(struct param_d *p, void *priv),
 		int (*get)(struct param_d *p, void *priv),