On 03/21/2017 04:27 AM, Russell King - ARM Linux wrote:
On Mon, Mar 20, 2017 at 06:23:24PM +0100, Philipp Zabel wrote:@@ -1173,15 +1196,8 @@ static void csi_try_fmt(struct csi_priv *priv, incc = imx_media_find_mbus_format(infmt->code, CS_SEL_ANY, true); - if (sdformat->format.width < priv->crop.width * 3 / 4) - sdformat->format.width = priv->crop.width / 2; - else - sdformat->format.width = priv->crop.width; - - if (sdformat->format.height < priv->crop.height * 3 / 4) - sdformat->format.height = priv->crop.height / 2; - else - sdformat->format.height = priv->crop.height; + sdformat->format.width = compose->width; + sdformat->format.height = compose->height; if (incc->bayer) { sdformat->format.code = infmt->code;We need to do more in here, because right now setting the source pads overwrites the colorimetry etc information. Maybe something like the below?
I'm thinking, to support propagating the colorimetry params, there should be a util function void imx_media_copy_colorimetry(struct v4l2_mbus_framefmt *out, struct v4l2_mbus_framefmt *in); that can be used throughout the pipeline, that does exactly what you add below.
I'm wondering if it would be a saner approach to copy the sink format and update the parameters that can be changed, rather than trying to list all the parameters that shouldn't be changed.
For CSI that is a bit difficult, because the source formats are hardly related to the sink formats, so so much would have to be modified after copying the sink format that it would be rather pointless, except to forward the colorimetry params. Steve
What if the format structure gains a new member? diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c index 1492b92e1970..756204ced53c 100644 --- a/drivers/staging/media/imx/imx-media-csi.c +++ b/drivers/staging/media/imx/imx-media-csi.c @@ -1221,6 +1221,12 @@ static void csi_try_fmt(struct csi_priv *priv, sdformat->format.field = (infmt->height == 480) ? V4L2_FIELD_SEQ_TB : V4L2_FIELD_SEQ_BT; } + + /* copy settings we can't change */ + sdformat->format.colorspace = infmt->colorspace; + sdformat->format.ycbcr_enc = infmt->ycbcr_enc; + sdformat->format.quantization = infmt->quantization; + sdformat->format.xfer_func = infmt->xfer_func; break; case CSI_SINK_PAD: v4l_bound_align_image(&sdformat->format.width, MIN_W, MAX_W,
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