video: Provide an API to access video parameters

Create a basic API to provide access to video parameters such as screen size, and to position the cursor on the screen. Also add a prototype for video_display_bitmap() which was missing. Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Anatolij Gustschin <agust@denx.de>

video: Provide an API to access video parameters
Create a basic API to provide access to video parameters such as screen size, and to position the cursor on the screen. Also add a prototype for video_display_bitmap() which was missing. Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Anatolij Gustschin <agust@denx.de>
Stefan Reinauer · Anatolij Gustschin
1 parent 945d069fb5
Showing 2 changed files with 50 additions and 3 deletions Side-by-side Diff
common/cmd_bmp.c
include/video.h
@@ -31,6 +31,7 @@
 #include <command.h>
 #include <asm/byteorder.h>
 #include <malloc.h>
+#include <video.h>
  
 static int bmp_info (ulong addr);
  
@@ -238,9 +239,7 @@
 #if defined(CONFIG_LCD)
 	ret = lcd_display_bitmap((ulong)bmp, x, y);
 #elif defined(CONFIG_VIDEO)
-	extern int video_display_bitmap (ulong, int, int);
-
-	ret = video_display_bitmap ((unsigned long)bmp, x, y);
+	ret = video_display_bitmap((unsigned long)bmp, x, y);
 #else
 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 #endif
@@ -15,5 +15,53 @@
 void	video_putc	(const char c);
 void	video_puts	(const char *s);
  
+/**
+ * Display a BMP format bitmap on the screen
+ *
+ * @param bmp_image	Address of BMP image
+ * @param x		X position to draw image
+ * @param y		Y position to draw image
+ */
+int video_display_bitmap(ulong bmp_image, int x, int y);
+
+/**
+ * Get the width of the screen in pixels
+ *
+ * @return width of screen in pixels
+ */
+int video_get_pixel_width(void);
+
+/**
+ * Get the height of the screen in pixels
+ *
+ * @return height of screen in pixels
+ */
+int video_get_pixel_height(void);
+
+/**
+ * Get the number of text lines/rows on the screen
+ *
+ * @return number of rows
+ */
+int video_get_screen_rows(void);
+
+/**
+ * Get the number of text columns on the screen
+ *
+ * @return number of columns
+ */
+int video_get_screen_columns(void);
+
+/**
+ * Set the position of the text cursor
+ *
+ * @param col	Column to place cursor (0 = left side)
+ * @param row	Row to place cursor (0 = top line)
+ */
+void video_position_cursor(unsigned col, unsigned row);
+
+/* Clear the display */
+void video_clear(void);
+
 #endif
...	...	@@ -31,6 +31,7 @@
31	31	#include <command.h>
32	32	#include <asm/byteorder.h>
33	33	#include <malloc.h>
	34	+#include <video.h>
34	35
35	36	static int bmp_info (ulong addr);
36	37
...	...	@@ -238,9 +239,7 @@
238	239	#if defined(CONFIG_LCD)
239	240	ret = lcd_display_bitmap((ulong)bmp, x, y);
240	241	#elif defined(CONFIG_VIDEO)
241		- extern int video_display_bitmap (ulong, int, int);
242		-
243		- ret = video_display_bitmap ((unsigned long)bmp, x, y);
	242	+ ret = video_display_bitmap((unsigned long)bmp, x, y);
244	243	#else
245	244	# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
246	245	#endif
...	...	@@ -15,5 +15,53 @@
15	15	void video_putc (const char c);
16	16	void video_puts (const char *s);
17	17
	18	+/**
	19	+ * Display a BMP format bitmap on the screen
	20	+ *
	21	+ * @param bmp_image Address of BMP image
	22	+ * @param x X position to draw image
	23	+ * @param y Y position to draw image
	24	+ */
	25	+int video_display_bitmap(ulong bmp_image, int x, int y);
	26	+
	27	+/**
	28	+ * Get the width of the screen in pixels
	29	+ *
	30	+ * @return width of screen in pixels
	31	+ */
	32	+int video_get_pixel_width(void);
	33	+
	34	+/**
	35	+ * Get the height of the screen in pixels
	36	+ *
	37	+ * @return height of screen in pixels
	38	+ */
	39	+int video_get_pixel_height(void);
	40	+
	41	+/**
	42	+ * Get the number of text lines/rows on the screen
	43	+ *
	44	+ * @return number of rows
	45	+ */
	46	+int video_get_screen_rows(void);
	47	+
	48	+/**
	49	+ * Get the number of text columns on the screen
	50	+ *
	51	+ * @return number of columns
	52	+ */
	53	+int video_get_screen_columns(void);
	54	+
	55	+/**
	56	+ * Set the position of the text cursor
	57	+ *
	58	+ * @param col Column to place cursor (0 = left side)
	59	+ * @param row Row to place cursor (0 = top line)
	60	+ */
	61	+void video_position_cursor(unsigned col, unsigned row);
	62	+
	63	+/* Clear the display */
	64	+void video_clear(void);
	65	+
18	66	#endif