[U-Boot] [PATCH v2] video: Provide an API to access video parameters
Anatolij Gustschin
agust at denx.de
Tue Nov 6 23:08:02 CET 2012
From: Stefan Reinauer <reinauer at chromium.org>
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 at chromium.org>
Signed-off-by: Simon Glass <sjg at chromium.org>
Signed-off-by: Anatolij Gustschin <agust at denx.de>
---
Changes in v2:
- include video.h in cmd_bmp.c to fix compiler warning:
cmd_bmp.c:242:2: warning: implicit declaration of function
'video_display_bitmap' [-Wimplicit-function-declaration]
common/cmd_bmp.c | 5 ++---
include/video.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+), 3 deletions(-)
diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c
index b8809e3..5a52edd 100644
--- a/common/cmd_bmp.c
+++ b/common/cmd_bmp.c
@@ -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 @@ int bmp_display(ulong addr, int x, int y)
#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
diff --git a/include/video.h b/include/video.h
index 9519cea..f7e27f8 100644
--- a/include/video.h
+++ b/include/video.h
@@ -15,4 +15,52 @@ int video_init (void *videobase);
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
--
1.7.1
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