[PATCH v6 3/3] media: vimc: Add a control to display info on test image
From: Kaaira Gupta
Date: Fri Jun 26 2020 - 07:36:54 EST
Add a control in VIMC to display information such as the correct order of
colors for a given test pattern, brightness, hue, saturation, contrast,
width and height at sensor, and time since streaming started over test image.
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-core.c | 10 ++++
drivers/media/test-drivers/vimc/vimc-sensor.c | 60 +++++++++++++++++++
4 files changed, 73 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..a289434e75ba 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_CID_OSD_TEXT_MODE (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-core.c b/drivers/media/test-drivers/vimc/vimc-core.c
index 11210aaa2551..8337e1276bba 100644
--- a/drivers/media/test-drivers/vimc/vimc-core.c
+++ b/drivers/media/test-drivers/vimc/vimc-core.c
@@ -5,10 +5,12 @@
* Copyright (C) 2015-2017 Helen Koike <helen.fornazier@xxxxxxxxx>
*/
+#include <linux/font.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <media/media-device.h>
+#include <media/tpg/v4l2-tpg.h>
#include <media/v4l2-device.h>
#include "vimc-common.h"
@@ -263,11 +265,19 @@ static int vimc_register_devices(struct vimc_device *vimc)
static int vimc_probe(struct platform_device *pdev)
{
+ const struct font_desc *font = find_font("VGA8x16");
struct vimc_device *vimc;
int ret;
dev_dbg(&pdev->dev, "probe");
+ if (!font) {
+ dev_err(&pdev->dev, "vimc: could not find font\n");
+ return -ENODEV;
+ }
+
+ tpg_set_font(font->data);
+
vimc = kzalloc(sizeof(*vimc), GFP_KERNEL);
if (!vimc)
return -ENOMEM;
diff --git a/drivers/media/test-drivers/vimc/vimc-sensor.c b/drivers/media/test-drivers/vimc/vimc-sensor.c
index a2f09ac9a360..ce438cdabb73 100644
--- a/drivers/media/test-drivers/vimc/vimc-sensor.c
+++ b/drivers/media/test-drivers/vimc/vimc-sensor.c
@@ -19,6 +19,8 @@ struct vimc_sen_device {
struct v4l2_subdev sd;
struct tpg_data tpg;
u8 *frame;
+ unsigned int osd_mode;
+ u64 start_stream_ts;
/* The active format */
struct v4l2_mbus_framefmt mbus_format;
struct v4l2_ctrl_handler hdl;
@@ -185,10 +187,46 @@ 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)
{
+ enum osd_mode {OSD_SHOW_ALL = 0, OSD_SHOW_COUNTERS = 1};
+ u8 *basep[TPG_MAX_PLANES][2];
+ char str[100];
+ int line = 1;
+ const unsigned int line_height = 16;
struct vimc_sen_device *vsen = container_of(ved, struct vimc_sen_device,
ved);
tpg_fill_plane_buffer(&vsen->tpg, 0, 0, vsen->frame);
+ tpg_calc_text_basep(&vsen->tpg, basep, 0, vsen->frame);
+
+ if (vsen->osd_mode <= OSD_SHOW_COUNTERS) {
+ unsigned int ms;
+
+ ms = (ktime_get_ns() - vsen->start_stream_ts) / 1000000;
+ snprintf(str, sizeof(str), "%02d:%02d:%02d:%03d",
+ (ms / (60 * 60 * 1000)) % 24,
+ (ms / (60 * 1000)) % 60,
+ (ms / 1000) % 60,
+ ms % 1000);
+ tpg_gen_text(&vsen->tpg, basep, line++ * line_height, 16, str);
+ }
+
+ if (vsen->osd_mode == OSD_SHOW_ALL) {
+ const char *order = tpg_g_color_order(&vsen->tpg);
+
+ tpg_gen_text(&vsen->tpg, basep,
+ line++ * line_height, 16, order);
+ snprintf(str, sizeof(str),
+ "brightness %3d, contrast %3d, saturation %3d, hue %d ",
+ vsen->tpg.brightness,
+ vsen->tpg.contrast,
+ vsen->tpg.saturation,
+ vsen->tpg.hue);
+ tpg_gen_text(&vsen->tpg, basep, line++ * line_height, 16, str);
+ snprintf(str, sizeof(str), "sensor size: %dx%d",
+ vsen->mbus_format.width, vsen->mbus_format.height);
+ tpg_gen_text(&vsen->tpg, basep, line++ * line_height, 16, str);
+ }
+
return vsen->frame;
}
@@ -201,6 +239,8 @@ static int vimc_sen_s_stream(struct v4l2_subdev *sd, int enable)
const struct vimc_pix_map *vpix;
unsigned int frame_size;
+ vsen->start_stream_ts = ktime_get_ns();
+
/* Calculate the frame size */
vpix = vimc_pix_map_by_code(vsen->mbus_format.code);
frame_size = vsen->mbus_format.width * vpix->bpp *
@@ -269,6 +309,9 @@ static int vimc_sen_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_SATURATION:
tpg_s_saturation(&vsen->tpg, ctrl->val);
break;
+ case VIMC_CID_OSD_TEXT_MODE:
+ vsen->osd_mode = ctrl->val;
+ break;
default:
return -EINVAL;
}
@@ -307,6 +350,22 @@ static const struct v4l2_ctrl_config vimc_sen_ctrl_test_pattern = {
.qmenu = tpg_pattern_strings,
};
+static const char * const vimc_ctrl_osd_mode_strings[] = {
+ "All",
+ "Counters Only",
+ "None",
+ NULL,
+};
+
+static const struct v4l2_ctrl_config vimc_sen_ctrl_osd_mode = {
+ .ops = &vimc_sen_ctrl_ops,
+ .id = VIMC_CID_OSD_TEXT_MODE,
+ .name = "Show Information",
+ .type = V4L2_CTRL_TYPE_MENU,
+ .max = ARRAY_SIZE(vimc_ctrl_osd_mode_strings) - 2,
+ .qmenu = vimc_ctrl_osd_mode_strings,
+};
+
static struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc,
const char *vcfg_name)
{
@@ -323,6 +382,7 @@ 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_osd_mode, 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,
--
2.17.1