On 05/08/2017 02:41 AM, Philipp Zabel wrote:
Hi Steve,
On Wed, 2017-04-12 at 17:45 -0700, Steve Longerbeam wrote:
This patch adds a call to imx_media_fill_empty_mbus_fields() in the
*_try_fmt() functions at the sink pads, to set empty field order and
colorimetry parameters.
If the field order is set to ANY, choose the currently set field order
at the sink pad. If the colorspace is set to DEFAULT, choose the
current colorspace at the sink pad. If any of xfer_func, ycbcr_enc
or quantization are set to DEFAULT, either choose the current sink pad
setting, or the default setting for the new colorspace, if non-DEFAULT
colorspace was given.
Colorimetry is also propagated from sink to source pads anywhere
this has not already been done. The exception is ic-prpencvf at the
source pad, since the Image Converter outputs fixed quantization and
Y`CbCr encoding.
Signed-off-by: Steve Longerbeam <steve_longerb...@mentor.com>
---
drivers/staging/media/imx/imx-ic-prp.c | 5 ++-
drivers/staging/media/imx/imx-ic-prpencvf.c | 25 +++++++++++---
drivers/staging/media/imx/imx-media-csi.c | 12 +++++--
drivers/staging/media/imx/imx-media-utils.c | 53 +++++++++++++++++++++++++++++
drivers/staging/media/imx/imx-media-vdic.c | 7 ++--
drivers/staging/media/imx/imx-media.h | 3 +-
6 files changed, 95 insertions(+), 10 deletions(-)
[...]
diff --git a/drivers/staging/media/imx/imx-media-utils.c
b/drivers/staging/media/imx/imx-media-utils.c
index 7b2f92d..b07d0ae 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -464,6 +464,59 @@ int imx_media_init_mbus_fmt(struct v4l2_mbus_framefmt
*mbus,
}
EXPORT_SYMBOL_GPL(imx_media_init_mbus_fmt);
+/*
+ * Check whether the field or colorimetry params in tryfmt are
+ * uninitialized, and if so fill them with the values from fmt.
+ * The exception is when tryfmt->colorspace has been initialized,
+ * if so all the further default colorimetry params can be derived
+ * from tryfmt->colorspace.
+ */
+void imx_media_fill_empty_mbus_fields(struct v4l2_mbus_framefmt *tryfmt,
+ struct v4l2_mbus_framefmt *fmt)
+{
+ /* fill field if necessary */
+ if (tryfmt->field == V4L2_FIELD_ANY)
+ tryfmt->field = fmt->field;
+
+ /* fill colorimetry if necessary */
+ if (tryfmt->colorspace == V4L2_COLORSPACE_DEFAULT) {
+ tryfmt->colorspace = fmt->colorspace;
+ if (tryfmt->xfer_func == V4L2_XFER_FUNC_DEFAULT)
+ tryfmt->xfer_func = fmt->xfer_func;
+ if (tryfmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
+ tryfmt->ycbcr_enc = fmt->ycbcr_enc;
+ if (tryfmt->quantization == V4L2_QUANTIZATION_DEFAULT)
+ tryfmt->quantization = fmt->quantization;
According to Hans' latest comments, this could be changed to:
----------8<----------
From cca3cda9effcaca0891eb8044a79137023fed1c2 Mon Sep 17 00:00:00 2001
From: Philipp Zabel <p.za...@pengutronix.de>
Date: Mon, 8 May 2017 11:38:05 +0200
Subject: [PATCH] fixup! media: imx: set and propagate default field,
colorimetry
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
drivers/staging/media/imx/imx-media-utils.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/imx/imx-media-utils.c
b/drivers/staging/media/imx/imx-media-utils.c
index a8766489e8a18..ec2abd618cc44 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -497,12 +497,9 @@ void imx_media_fill_default_mbus_fields(struct
v4l2_mbus_framefmt *tryfmt,
/* fill colorimetry if necessary */
if (tryfmt->colorspace == V4L2_COLORSPACE_DEFAULT) {
tryfmt->colorspace = fmt->colorspace;
- if (tryfmt->xfer_func == V4L2_XFER_FUNC_DEFAULT)
- tryfmt->xfer_func = fmt->xfer_func;
- if (tryfmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
- tryfmt->ycbcr_enc = fmt->ycbcr_enc;
- if (tryfmt->quantization == V4L2_QUANTIZATION_DEFAULT)
- tryfmt->quantization = fmt->quantization;
+ tryfmt->xfer_func = fmt->xfer_func;
+ tryfmt->ycbcr_enc = fmt->ycbcr_enc;
+ tryfmt->quantization = fmt->quantization;
} else {
if (tryfmt->xfer_func == V4L2_XFER_FUNC_DEFAULT) {
tryfmt->xfer_func =
Hi Philipp, makes sense to me, I'll make the change in next revision.
Steve
