tests: drivers: video: test_pattern: new test from the sample

Turn the test part of the sample code into a dedicated test into the
tests/ directory instead of just samples/.

Signed-off-by: Josuah Demangeon <me@josuah.net>

Author: josuah

samples/drivers/video/capture/src/check_test_pattern.h

@@ -13,14 +13,7 @@
 #include <zephyr/drivers/video-controls.h>
 
 #include <zephyr/logging/log.h>
-
-#ifdef CONFIG_TEST
-#include "check_test_pattern.h"
-
-LOG_MODULE_REGISTER(main, LOG_LEVEL_DBG);
-#else
 LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);
-#endif
 
 #if !DT_HAS_CHOSEN(zephyr_camera)
 #error No camera chosen in devicetree. Missing "--shield" or "--snippet video-sw-generator" flag?
@@ -252,7 +245,6 @@ int main(void)
 	}
 
 	/* Set controls */
-	int tp_set_ret = -ENOTSUP;
 
 	if (IS_ENABLED(CONFIG_VIDEO_CTRL_HFLIP)) {
 		struct video_control ctrl = {.id = VIDEO_CID_HFLIP, .val = 1};
@@ -274,16 +266,6 @@ int main(void)
 		}
 	}
 
-	if (IS_ENABLED(CONFIG_TEST)) {
-		struct video_control ctrl = {.id = VIDEO_CID_TEST_PATTERN, .val = 1};
-
-		ret = video_set_ctrl(video_dev, &ctrl);
-		if (ret < 0 && ret != -ENOTSUP) {
-			LOG_WRN("Failed to set the test pattern");
-		}
-		tp_set_ret = ret;
-	}
-
 #if DT_HAS_CHOSEN(zephyr_display)
 	const struct device *const display_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display));
 
@@ -353,14 +335,6 @@ int main(void)
 		LOG_INF("Got frame %u! size: %u; timestamp %u ms",
 			frame++, vbuf->bytesused, vbuf->timestamp);
 
-#ifdef CONFIG_TEST
-		if (tp_set_ret < 0) {
-			LOG_DBG("Test pattern control was not successful. Skip test");
-		} else if (is_colorbar_ok(vbuf->buffer, fmt)) {
-			LOG_DBG("Pattern OK!\n");
-		}
-#endif
-
 #if DT_HAS_CHOSEN(zephyr_display)
 		ret = app_display_frame(display_dev, vbuf, fmt);
 		if (ret != 0) {

samples/drivers/video/capture/src/main.c

@@ -0,0 +1,8 @@
+# Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(integration)
+
+target_sources(app PRIVATE src/main.c)

tests/drivers/video/test_pattern/CMakeLists.txt

@@ -0,0 +1,36 @@
+# Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+mainmenu "Video test pattern testing"
+
+menu "Video capture configuration"
+
+config VIDEO_FRAME_HEIGHT
+	int "Height of the video frame"
+	default 0
+	help
+	  Height of the video frame. If set to 0, the default height is used.
+
+config VIDEO_FRAME_WIDTH
+	int "Width of the video frame"
+	default 0
+	help
+	  Width of the video frame. If set to 0, the default width is used.
+
+config VIDEO_PIXEL_FORMAT
+	string "Pixel format of the video frame"
+	help
+	  Pixel format of the video frame. If not set, the default pixel format is used.
+
+config LAB_THRESHOLD
+	int "CIE LAB acceptance threshold"
+	default 10
+	help
+	  Margin value to consider the color similarity to be close enough.
+	  The default is 10 to allow slight difference to be ignored, and complete swaps to
+	  always be detected. This can be raised in case the colors are all slightly off but
+	  correctly ordered.
+
+endmenu
+
+source "Kconfig.zephyr"

tests/drivers/video/test_pattern/Kconfig

@@ -0,0 +1,6 @@
+CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=33000
+CONFIG_VIDEO_BUFFER_POOL_NUM_MAX=1
+CONFIG_VIDEO_FRAME_HEIGHT=64
+CONFIG_VIDEO_FRAME_WIDTH=256
+CONFIG_VIDEO_PIXEL_FORMAT="RGBP"
+CONFIG_LAB_THRESHOLD=30

tests/drivers/video/test_pattern/boards/native_sim_native_64.conf

@@ -0,0 +1,3 @@
+CONFIG_LOG=y
+CONFIG_VIDEO=y
+CONFIG_ZTEST=y