drivers: video: sw_pipeline: perform custom pixel stream processing

Introduce a connector between the lib/pixel API to the drivers/video API.
An function loads a lib/pixel stream into this new driver, then the
driver will load the frames in and out of this stream.

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

Author: josuah

drivers/video/CMakeLists.txt

@@ -9,6 +9,7 @@ zephyr_library_sources(video_device.c)
 zephyr_library_sources_ifdef(CONFIG_VIDEO_MCUX_CSI	video_mcux_csi.c)
 zephyr_library_sources_ifdef(CONFIG_VIDEO_MCUX_MIPI_CSI2RX video_mcux_mipi_csi2rx.c)
 zephyr_library_sources_ifdef(CONFIG_VIDEO_SW_GENERATOR	video_sw_generator.c)
+zephyr_library_sources_ifdef(CONFIG_VIDEO_SW_PIPELINE	video_sw_pipeline.c)
 zephyr_library_sources_ifdef(CONFIG_VIDEO_MT9M114	mt9m114.c)
 zephyr_library_sources_ifdef(CONFIG_VIDEO_OV7725	ov7725.c)
 zephyr_library_sources_ifdef(CONFIG_VIDEO_OV2640	ov2640.c)

drivers/video/Kconfig

@@ -58,6 +58,8 @@ source "drivers/video/Kconfig.mcux_mipi_csi2rx"
 
 source "drivers/video/Kconfig.sw_generator"
 
+source "drivers/video/Kconfig.sw_pipeline"
+
 source "drivers/video/Kconfig.mt9m114"
 
 source "drivers/video/Kconfig.ov7725"

drivers/video/Kconfig.sw_pipeline

@@ -0,0 +1,18 @@
+# Copyright (c) 2025 tinyVision.ai
+# SPDX-License-Identifier: Apache-2.0
+
+config VIDEO_SW_PIPELINE
+	bool "Video Software Pipeline"
+	depends on DT_HAS_ZEPHYR_VIDEO_SW_PIPELINE_ENABLED
+	default y
+	help
+	  Enable the video stream processing based on the lib/pixel.
+
+config VIDEO_SW_PIPELINE_THREAD_PRIORITY
+	int "Video Software Pipeline thread priority"
+	default 2
+	depends on VIDEO_SW_PIPELINE
+	help
+	  The Video Software Pipeline has a thread in which video frames are processed.
+	  This options sets the priority of that thread.
+	  The default is some arbitrary value above 0.