[U-Boot] [PATCH] cmd: bmp: manage centered display

[Patrick Delaunay]

Allow to display BMP at the middle of the screen.

'm' means "middle" as it is done for the splashscreen variable:
splashpos=m,m

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---
Example for command

load mmc 0:4 ${splashimage} splash.bmp
bmp display ${splashimage} m m

or function can be used directly

  bmp_display(0xC0000000, BMP_ALIGN_CENTER, BMP_ALIGN_CENTER)


 cmd/bmp.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/cmd/bmp.c b/cmd/bmp.c
index 02bdf48..1ace8a8 100644
--- a/cmd/bmp.c
+++ b/cmd/bmp.c
@@ -108,6 +108,7 @@ static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[
 	return (bmp_info(addr));
 }
 
+#define BMP_ALIGN_CENTER	0x7FFF
 static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
 	ulong addr;
@@ -124,8 +125,14 @@ static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const ar
 		break;
 	case 4:
 		addr = simple_strtoul(argv[1], NULL, 16);
-		x = simple_strtoul(argv[2], NULL, 10);
-		y = simple_strtoul(argv[3], NULL, 10);
+		if (!strcmp(argv[2], "m"))
+			x = BMP_ALIGN_CENTER;
+		else
+			x = simple_strtoul(argv[2], NULL, 10);
+		if (!strcmp(argv[3], "m"))
+			y = BMP_ALIGN_CENTER;
+		else
+			y = simple_strtoul(argv[3], NULL, 10);
 		break;
 	default:
 		return CMD_RET_USAGE;
@@ -249,9 +256,11 @@ int bmp_display(ulong addr, int x, int y)
 	if (!ret) {
 		bool align = false;
 
-# ifdef CONFIG_SPLASH_SCREEN_ALIGN
-		align = true;
-# endif /* CONFIG_SPLASH_SCREEN_ALIGN */
+		if (CONFIG_IS_ENABLED(SPLASH_SCREEN_ALIGN) ||
+		    x == BMP_ALIGN_CENTER ||
+		    y == BMP_ALIGN_CENTER)
+			align = true;
+
 		ret = video_bmp_display(dev, addr, x, y, align);
 	}
 #elif defined(CONFIG_LCD)
-- 
2.7.4