Add 'fbtest' - a command to produce test patterns on a screen
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
Signed-off-by: Andrey Gusakov <andrey.gusakov@xxxxxxxxxxxxxxxxxx>
---
Changes since v2:
- Fixed a typo
- 2 second delay logic changed to respond to Ctrl-C
immediately as per Sascha's suggestion
- fbtest_pattern_bars utilizes negative coordinates "feature" of
gu_fill_rectangle
commands/Kconfig | 9 +++
commands/Makefile | 1 +
commands/fbtest.c | 201 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 211 insertions(+)
create mode 100644 commands/fbtest.c
diff --git a/commands/Kconfig b/commands/Kconfig
index 880cd45..cf71289 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -1417,6 +1417,15 @@ config CMD_SPLASH
-b COLOR background color in 0xttrrggbb
-o render offscreen
+config CMD_FBTEST
+ bool
+ depends on VIDEO
+ select 2D_PRIMITIVES
+ prompt "FB test"
+ help
+ Framebuffer test command that allows to produce a number of
+ test patterns on a screen.
+
config CMD_READLINE
tristate
prompt "readline"
diff --git a/commands/Makefile b/commands/Makefile
index b8c07f3..5a899ab 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -57,6 +57,7 @@ obj-$(CONFIG_CMD_HELP) += help.o
obj-$(CONFIG_CMD_LSMOD) += lsmod.o
obj-$(CONFIG_CMD_INSMOD) += insmod.o
obj-$(CONFIG_CMD_SPLASH) += splash.o
+obj-$(CONFIG_CMD_FBTEST) += fbtest.o
obj-$(CONFIG_USB_GADGET_DFU) += dfu.o
obj-$(CONFIG_USB_GADGET_SERIAL) += usbserial.o
obj-$(CONFIG_CMD_GPIO) += gpio.o
diff --git a/commands/fbtest.c b/commands/fbtest.c
new file mode 100644
index 0000000..d070d1f
--- /dev/null
+++ b/commands/fbtest.c
@@ -0,0 +1,201 @@
+#include <common.h>
+#include <command.h>
+#include <errno.h>
+#include <malloc.h>
+#include <getopt.h>
+#include <fb.h>
+#include <gui/graphic_utils.h>
+#include <gui/2d-primitives.h>
+#include <linux/gcd.h>
+#include <int_sqrt.h>
+
+static void fbtest_pattern_bars(struct screen *sc, u32 unused)
+{
+ int i;
+
+ const u32 xres = sc->info->xres;
+
+ const u32 colors[] = {
+ 0xFFFFFF, /* white */
+ 0xFFFF00, /* yellow */
+ 0x00FFFF, /* cyan */
+ 0x00FF00, /* green */
+ 0xFF00FF, /* magenta */
+ 0xFF0000, /* red */
+ 0x0000FF, /* blue */
+ 0x000000, /* black */
+ };
+
+ for (i = 0; i < ARRAY_SIZE(colors); i++) {
+ const u8 r = (colors[i] >> 16) & 0xff;
+ const u8 g = (colors[i] >> 8) & 0xff;
+ const u8 b = (colors[i] >> 0) & 0xff;
+ const int dx = xres / ARRAY_SIZE(colors);
+
+ gu_fill_rectangle(sc,
+ i * dx, -1, (i + 1) * dx - 1, -1,
+ r, g, b, 0xff);
+ }
+}
+
+static void fbtest_pattern_geometry(struct screen *sc, u32 color)
+{
+ int i;
+
+ const u8 r = (color >> 16) & 0xff;
+ const u8 g = (color >> 8) & 0xff;
+ const u8 b = (color >> 0) & 0xff;
+
+ const u32 xres = sc->info->xres;
+ const u32 yres = sc->info->yres;
+
+ const u8 xcount = xres / gcd(xres, yres);
+ const u8 ycount = yres / gcd(xres, yres);
+
+ const struct {
+ int x1, y1, x2, y2;
+ } borders[] = {
+ { 0, 0, xres - 1, 0 },
+ { xres - 1, 0, xres - 1, yres - 1 },
+ { 0, yres - 1, xres - 1, yres - 1 },
+ { 0, 0, 0, yres - 1 },
+ };
+
+ const int R1 = min(xres, yres) / 2;
+ const int h = xres * xres + yres * yres;
+ const int R2 = (int_sqrt(h) / 2 - R1) * 5 / 12;
+
+ const struct {
+ int x0, y0, radius;
+ } circles[] = {
+ { xres / 2, yres / 2, R1 - 1 },
+ { R2, R2, R2 - 1 },
+ { xres - R2, R2, R2 - 1 },
+ { xres - R2, yres - R2, R2 - 1 },
+ { R2, yres - R2, R2 - 1 }
+ };
+
+ void *buf = gui_screen_render_buffer(sc);
+
+ gu_memset_pixel(sc->info, buf, ~color,
+ sc->s.width * sc->s.height);
+
+ for (i = 0; i < ARRAY_SIZE(borders); i++)
+ gu_draw_line(sc,
+ borders[i].x1, borders[i].y1,
+ borders[i].x2, borders[i].y2,
+ r, g, b, 0xff, 10);
+
+ for (i = 0; i < ARRAY_SIZE(circles); i++)
+ gu_draw_circle(sc,
+ circles[i].x0, circles[i].y0,
+ circles[i].radius,
+ r, g, b, 0xff);
+
+ for (i = 1; i < ycount; i++) {
+ const int y = (yres - 1) * i / ycount;
+ gu_draw_line(sc,
+ 0, y, xres - 1, y,
+ r, g, b, 0xff, 0);
+ }
+
+
+ for (i = 1; i < xcount; i++) {
+ const int x = (xres - 1) * i / xcount;
+ gu_draw_line(sc,
+ x, 0, x, yres - 1,
+ r, g, b, 0xff, 0);
+ }
+}
+
+static int do_fbtest(int argc, char *argv[])
+{
+ struct screen *sc;
+ int opt;
+ unsigned int i;
+ const char *pattern_name = NULL;
+ char *fbdev = "/dev/fb0";
+ void (*pattern) (struct screen *sc, u32 color) = NULL;
+ u32 color = 0xffffff;
+
+ struct {
+ const char *name;
+ void (*func) (struct screen *sc, u32 color);
+ } patterns[] = {
+ { "geometry", fbtest_pattern_geometry },
+ { "bars", fbtest_pattern_bars }
+ };
+
+ while((opt = getopt(argc, argv, "d:p:c:")) > 0) {
+ switch(opt) {
+ case 'd':
+ fbdev = optarg;
+ break;
+ case 'p':
+ pattern_name = optarg;
+ break;
+ case 'c':
+ color = simple_strtoul(optarg, NULL, 16);
+ break;
+ }
+ }
+
+ if (pattern_name) {
+ for (i = 0; i < ARRAY_SIZE(patterns); i++)
+ if (!strcmp(pattern_name, patterns[i].name))
+ pattern = patterns[i].func;
+
+ if (!pattern) {
+ printf("Unknown pattern: %s\n", pattern_name);
+ return -EINVAL;
+ }
+ }
+
+ sc = fb_open(fbdev);
+ if (IS_ERR(sc)) {
+ perror("fd_open");
+ return PTR_ERR(sc);
+ }
+
+ if (!pattern_name) {
+ printf("No pattern selected. Cycling through all of them.\n");
+ printf("Press Ctrl-C to stop\n");
+
+ i = 0;
+ for (;;) {
+ uint64_t start;
+ pattern = patterns[i++ % ARRAY_SIZE(patterns)].func;
+ pattern(sc, color);
+ gu_screen_blit(sc);
+
+ start = get_time_ns();
+ while (!is_timeout(start, 2 * SECOND))
+ if (ctrlc())
+ goto done;
+ }
+ } else {
+ pattern(sc, color);
+ gu_screen_blit(sc);
+ }
+done:
+ fb_close(sc);
+
+ return 0;
+}
+
+BAREBOX_CMD_HELP_START(fbtest)
+BAREBOX_CMD_HELP_TEXT("This command displays a test pattern on a screen")
+BAREBOX_CMD_HELP_TEXT("")
+BAREBOX_CMD_HELP_TEXT("Options:")
+BAREBOX_CMD_HELP_OPT ("-d <fbdev>\t", "framebuffer device (default /dev/fb0)")
+BAREBOX_CMD_HELP_OPT ("-c color\t", "color")
+BAREBOX_CMD_HELP_OPT ("-p pattern\t", "pattern name (geometry, bars)")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(fbtest)
+ .cmd = do_fbtest,
+ BAREBOX_CMD_DESC("display a test pattern")
+ BAREBOX_CMD_OPTS("[-dcp]")
+ BAREBOX_CMD_GROUP(CMD_GRP_CONSOLE)
+ BAREBOX_CMD_HELP(cmd_fbtest_help)
+BAREBOX_CMD_END
--
2.5.5
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