libcamera: pipeline: vivid: Initialise key controls

The VIVID pipeline handler retains state globally of it's controls.
Ensure that when we configure this specific pipeline we set initial
parameters on the device that suit our (specific) needs.

This introduces how controls can be set directly on a device, however
under normal circumstances controls should usually be set from libcamera
controls as part of a request. These are VIVID specific only.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/libcamera/pipeline/vivid/vivid.cpp b/src/libcamera/pipeline/vivid/vivid.cpp
index 672b745c..9ac55d52 100644
--- a/src/libcamera/pipeline/vivid/vivid.cpp
+++ b/src/libcamera/pipeline/vivid/vivid.cpp
@@ -28,6 +28,18 @@
  */
 #pragma GCC diagnostic ignored "-Wunused-parameter"
 
+#define VIVID_CID_VIVID_BASE            (0x00f00000 | 0xf000)
+#define VIVID_CID_VIVID_CLASS           (0x00f00000 | 1)
+#define VIVID_CID_TEST_PATTERN          (VIVID_CID_VIVID_BASE + 0)
+#define VIVID_CID_OSD_TEXT_MODE         (VIVID_CID_VIVID_BASE + 1)
+#define VIVID_CID_HOR_MOVEMENT          (VIVID_CID_VIVID_BASE + 2)
+#define VIVID_CID_VERT_MOVEMENT         (VIVID_CID_VIVID_BASE + 3)
+#define VIVID_CID_SHOW_BORDER           (VIVID_CID_VIVID_BASE + 4)
+#define VIVID_CID_SHOW_SQUARE           (VIVID_CID_VIVID_BASE + 5)
+#define VIVID_CID_INSERT_SAV            (VIVID_CID_VIVID_BASE + 6)
+#define VIVID_CID_INSERT_EAV            (VIVID_CID_VIVID_BASE + 7)
+#define VIVID_CID_VBI_CAP_INTERLACED    (VIVID_CID_VIVID_BASE + 8)
+
 namespace libcamera {
 
 LOG_DEFINE_CATEGORY(VIVID)
@@ -181,6 +193,25 @@ int PipelineHandlerVivid::configure(Camera *camera, CameraConfiguration *config)
 	    format.fourcc != data->video_->toV4L2PixelFormat(cfg.pixelFormat))
 		return -EINVAL;
 
+	/* Set initial controls specific to VIVID */
+	ControlList controls(data->video_->controls());
+	controls.set(VIVID_CID_TEST_PATTERN, 0); /* Vertical Colour Bars */
+	controls.set(VIVID_CID_OSD_TEXT_MODE, 0); /* Display all OSD */
+
+	/* Ensure clear colours configured. */
+	controls.set(V4L2_CID_BRIGHTNESS, 128);
+	controls.set(V4L2_CID_CONTRAST, 128);
+	controls.set(V4L2_CID_SATURATION, 128);
+
+	/* Enable movement to visualise buffer updates. */
+	controls.set(VIVID_CID_HOR_MOVEMENT, 5);
+
+	ret = data->video_->setControls(&controls);
+	if (ret) {
+		LOG(VIVID, Error) << "Failed to set controls: " << ret;
+		return ret < 0 ? ret : -EINVAL;
+	}
+
 	cfg.setStream(&data->stream_);
 	cfg.stride = format.planes[0].bpl;