[media] vivid: Add support for HSV encoding

Support HSV encoding. Most of the logic is replicated from ycbcr_enc.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/vivid/vivid-core.h

@@ -346,6 +346,7 @@ struct vivid_dev {
 	struct v4l2_dv_timings		dv_timings_out;
 	u32				colorspace_out;
 	u32				ycbcr_enc_out;
+	u32				hsv_enc_out;
 	u32				quantization_out;
 	u32				xfer_func_out;
 	u32				service_set_out;

drivers/media/platform/vivid/vivid-ctrls.c

@@ -79,6 +79,7 @@
 #define VIVID_CID_MAX_EDID_BLOCKS	(VIVID_CID_VIVID_BASE + 40)
 #define VIVID_CID_PERCENTAGE_FILL	(VIVID_CID_VIVID_BASE + 41)
 #define VIVID_CID_REDUCED_FPS		(VIVID_CID_VIVID_BASE + 42)
+#define VIVID_CID_HSV_ENC		(VIVID_CID_VIVID_BASE + 43)
 
 #define VIVID_CID_STD_SIGNAL_MODE	(VIVID_CID_VIVID_BASE + 60)
 #define VIVID_CID_STANDARD		(VIVID_CID_VIVID_BASE + 61)
@@ -378,6 +379,14 @@ static int vivid_vid_cap_s_ctrl(struct v4l2_ctrl *ctrl)
 		vivid_send_source_change(dev, HDMI);
 		vivid_send_source_change(dev, WEBCAM);
 		break;
+	case VIVID_CID_HSV_ENC:
+		tpg_s_hsv_enc(&dev->tpg, ctrl->val ? V4L2_HSV_ENC_256 :
+						     V4L2_HSV_ENC_180);
+		vivid_send_source_change(dev, TV);
+		vivid_send_source_change(dev, SVID);
+		vivid_send_source_change(dev, HDMI);
+		vivid_send_source_change(dev, WEBCAM);
+		break;
 	case VIVID_CID_QUANTIZATION:
 		tpg_s_quantization(&dev->tpg, ctrl->val);
 		vivid_send_source_change(dev, TV);
@@ -778,6 +787,21 @@ static const struct v4l2_ctrl_config vivid_ctrl_ycbcr_enc = {
 	.qmenu = vivid_ctrl_ycbcr_enc_strings,
 };
 
+static const char * const vivid_ctrl_hsv_enc_strings[] = {
+	"Hue 0-179",
+	"Hue 0-256",
+	NULL,
+};
+
+static const struct v4l2_ctrl_config vivid_ctrl_hsv_enc = {
+	.ops = &vivid_vid_cap_ctrl_ops,
+	.id = VIVID_CID_HSV_ENC,
+	.name = "HSV Encoding",
+	.type = V4L2_CTRL_TYPE_MENU,
+	.max = ARRAY_SIZE(vivid_ctrl_hsv_enc_strings) - 2,
+	.qmenu = vivid_ctrl_hsv_enc_strings,
+};
+
 static const char * const vivid_ctrl_quantization_strings[] = {
 	"Default",
 	"Full Range",
@@ -1454,6 +1478,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap,
 			&vivid_ctrl_colorspace, NULL);
 		v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_xfer_func, NULL);
 		v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_ycbcr_enc, NULL);
+		v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_hsv_enc, NULL);
 		v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_quantization, NULL);
 		v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_alpha_mode, NULL);
 	}

drivers/media/platform/vivid/vivid-vid-cap.c

@@ -510,6 +510,13 @@ static unsigned vivid_ycbcr_enc_cap(struct vivid_dev *dev)
 	return dev->ycbcr_enc_out;
 }
 
+static unsigned int vivid_hsv_enc_cap(struct vivid_dev *dev)
+{
+	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
+		return tpg_g_hsv_enc(&dev->tpg);
+	return dev->hsv_enc_out;
+}
+
 static unsigned vivid_quantization_cap(struct vivid_dev *dev)
 {
 	if (!dev->loop_video || vivid_is_webcam(dev) || vivid_is_tv_cap(dev))
@@ -530,7 +537,10 @@ int vivid_g_fmt_vid_cap(struct file *file, void *priv,
 	mp->pixelformat  = dev->fmt_cap->fourcc;
 	mp->colorspace   = vivid_colorspace_cap(dev);
 	mp->xfer_func    = vivid_xfer_func_cap(dev);
-	mp->ycbcr_enc    = vivid_ycbcr_enc_cap(dev);
+	if (dev->fmt_cap->color_enc == TGP_COLOR_ENC_HSV)
+		mp->hsv_enc    = vivid_hsv_enc_cap(dev);
+	else
+		mp->ycbcr_enc    = vivid_ycbcr_enc_cap(dev);
 	mp->quantization = vivid_quantization_cap(dev);
 	mp->num_planes = dev->fmt_cap->buffers;
 	for (p = 0; p < mp->num_planes; p++) {
@@ -618,7 +628,10 @@ int vivid_try_fmt_vid_cap(struct file *file, void *priv,
 		memset(pfmt[p].reserved, 0, sizeof(pfmt[p].reserved));
 	}
 	mp->colorspace = vivid_colorspace_cap(dev);
-	mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
+	if (fmt->color_enc == TGP_COLOR_ENC_HSV)
+		mp->hsv_enc = vivid_hsv_enc_cap(dev);
+	else
+		mp->ycbcr_enc = vivid_ycbcr_enc_cap(dev);
 	mp->xfer_func = vivid_xfer_func_cap(dev);
 	mp->quantization = vivid_quantization_cap(dev);
 	memset(mp->reserved, 0, sizeof(mp->reserved));

drivers/media/platform/vivid/vivid-vid-common.c

@@ -630,6 +630,7 @@ void fmt_sp2mp(const struct v4l2_format *sp_fmt, struct v4l2_format *mp_fmt)
 	mp->field = pix->field;
 	mp->colorspace = pix->colorspace;
 	mp->xfer_func = pix->xfer_func;
+	/* Also copies hsv_enc */
 	mp->ycbcr_enc = pix->ycbcr_enc;
 	mp->quantization = pix->quantization;
 	mp->num_planes = 1;
@@ -659,6 +660,7 @@ int fmt_sp2mp_func(struct file *file, void *priv,
 	pix->field = mp->field;
 	pix->colorspace = mp->colorspace;
 	pix->xfer_func = mp->xfer_func;
+	/* Also copies hsv_enc */
 	pix->ycbcr_enc = mp->ycbcr_enc;
 	pix->quantization = mp->quantization;
 	pix->sizeimage = ppix->sizeimage;

drivers/media/platform/vivid/vivid-vid-out.c

@@ -256,6 +256,7 @@ void vivid_update_format_out(struct vivid_dev *dev)
 	}
 	dev->xfer_func_out = V4L2_XFER_FUNC_DEFAULT;
 	dev->ycbcr_enc_out = V4L2_YCBCR_ENC_DEFAULT;
+	dev->hsv_enc_out = V4L2_HSV_ENC_180;
 	dev->quantization_out = V4L2_QUANTIZATION_DEFAULT;
 	dev->compose_out = dev->sink_rect;
 	dev->compose_bounds_out = dev->sink_rect;