Add a control in VIMC to show the correct order of the colors for a
given test pattern.
The control can be accessed by using show_colors_order in v4l2-ctl
Signed-off-by: Kaaira Gupta <kgupta@xxxxxxxxxxxxx>
---
drivers/media/test-drivers/vimc/Kconfig | 2 ++
drivers/media/test-drivers/vimc/vimc-common.h | 1 +
drivers/media/test-drivers/vimc/vimc-sensor.c | 34 +++++++++++++++++++
3 files changed, 37 insertions(+)
diff --git a/drivers/media/test-drivers/vimc/Kconfig b/drivers/media/test-drivers/vimc/Kconfig
index 4068a67585f9..da4b2ad6e40c 100644
--- a/drivers/media/test-drivers/vimc/Kconfig
+++ b/drivers/media/test-drivers/vimc/Kconfig
@@ -2,6 +2,8 @@
config VIDEO_VIMC
tristate "Virtual Media Controller Driver (VIMC)"
depends on VIDEO_DEV && VIDEO_V4L2
+ select FONT_SUPPORT
+ select FONT_8x16
select MEDIA_CONTROLLER
select VIDEO_V4L2_SUBDEV_API
select VIDEOBUF2_VMALLOC
diff --git a/drivers/media/test-drivers/vimc/vimc-common.h b/drivers/media/test-drivers/vimc/vimc-common.h
index ae163dec2459..52376ba6146b 100644
--- a/drivers/media/test-drivers/vimc/vimc-common.h
+++ b/drivers/media/test-drivers/vimc/vimc-common.h
@@ -20,6 +20,7 @@
#define VIMC_CID_VIMC_CLASS (0x00f00000 | 1)
#define VIMC_CID_TEST_PATTERN (VIMC_CID_VIMC_BASE + 0)
#define VIMC_CID_MEAN_WIN_SIZE (VIMC_CID_VIMC_BASE + 1)
+#define VIMC_TEST_PATTERN_ORDER (VIMC_CID_VIMC_BASE + 2)
#define VIMC_FRAME_MAX_WIDTH 4096
#define VIMC_FRAME_MAX_HEIGHT 2160
diff --git a/drivers/media/test-drivers/vimc/vimc-sensor.c b/drivers/media/test-drivers/vimc/vimc-sensor.c
index a2f09ac9a360..da625f6accce 100644
--- a/drivers/media/test-drivers/vimc/vimc-sensor.c
+++ b/drivers/media/test-drivers/vimc/vimc-sensor.c
@@ -5,6 +5,7 @@
* Copyright (C) 2015-2017 Helen Koike <helen.fornazier@xxxxxxxxx>
*/
+#include <linux/font.h>
#include <linux/v4l2-mediabus.h>
#include <linux/vmalloc.h>
#include <media/v4l2-ctrls.h>
@@ -19,6 +20,7 @@ struct vimc_sen_device {
struct v4l2_subdev sd;
struct tpg_data tpg;
u8 *frame;
+ bool show_colors_order;
/* The active format */
struct v4l2_mbus_framefmt mbus_format;
struct v4l2_ctrl_handler hdl;
@@ -185,10 +187,18 @@ static const struct v4l2_subdev_pad_ops vimc_sen_pad_ops = {
static void *vimc_sen_process_frame(struct vimc_ent_device *ved,
const void *sink_frame)
{
+ u8 *basep[TPG_MAX_PLANES][2];
+ char *str;
struct vimc_sen_device *vsen = container_of(ved, struct vimc_sen_device,
ved);
tpg_fill_plane_buffer(&vsen->tpg, 0, 0, vsen->frame);
+ if (vsen->show_colors_order) {
+ tpg_calc_text_basep(&vsen->tpg, basep, 0, vsen->frame);
+ str = tpg_g_color_order(&vsen->tpg);
+ tpg_gen_text(&vsen->tpg, basep, 1, 1, str);
+ }
+
return vsen->frame;
}
@@ -200,6 +210,14 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
if (enable) {
const struct vimc_pix_map *vpix;
unsigned int frame_size;
+ const struct font_desc *font = find_font("VGA8x16");
+
+ if (font == NULL) {
+ pr_err("vimc: could not find font\n");
+ return -ENODEV;
+ }
+
+ tpg_set_font(font->data);
/* Calculate the frame size */
vpix = vimc_pix_map_by_code(vsen->mbus_format.code);
@@ -269,6 +287,9 @@ static int vimc_sen_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_SATURATION:
tpg_s_saturation(&vsen->tpg, ctrl->val);
break;
+ case VIMC_TEST_PATTERN_ORDER:
+ vsen->show_colors_order = ctrl->val;
+ break;
default:
return -EINVAL;
}
@@ -307,6 +328,17 @@ static const struct v4l2_ctrl_config vimc_sen_ctrl_test_pattern = {
.qmenu = tpg_pattern_strings,
};
+static const struct v4l2_ctrl_config vimc_sen_ctrl_order = {
+ .ops = &vimc_sen_ctrl_ops,
+ .id = VIMC_TEST_PATTERN_ORDER,
+ .name = "Show Colors Order",
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .min = 0,
+ .max = 1,
+ .step = 1,
+ .def = 1,
+};
+
static struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc,
const char *vcfg_name)
{
@@ -323,6 +355,7 @@ static struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc,
v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_class, NULL);
v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_test_pattern, NULL);
+ v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_order, NULL);
v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
@@ -362,6 +395,7 @@ static struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc,
/* Initialize the frame format */
vsen->mbus_format = fmt_default;
+ vsen->show_colors_order = vimc_sen_ctrl_order.def;
return &vsen->ved;
--
2.17.1
