On 04/06/2017 08:25 AM, Philipp Zabel wrote:
On Thu, 2017-04-06 at 16:10 +0100, Russell King - ARM Linux wrote:
On Thu, Apr 06, 2017 at 05:01:52PM +0200, Philipp Zabel wrote:
On Thu, 2017-04-06 at 15:05 +0100, Russell King - ARM Linux wrote:
On Thu, Apr 06, 2017 at 03:55:29PM +0200, Philipp Zabel wrote:
+
+ /* Retain current field setting as default */
+ if (sdformat->format.field == V4L2_FIELD_ANY)
+ sdformat->format.field = fmt->field;
+
+ /* Retain current colorspace setting as default */
+ if (sdformat->format.colorspace == V4L2_COLORSPACE_DEFAULT) {
+ sdformat->format.colorspace = fmt->colorspace;
+ if (sdformat->format.xfer_func == V4L2_XFER_FUNC_DEFAULT)
+ sdformat->format.xfer_func = fmt->xfer_func;
+ if (sdformat->format.ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
+ sdformat->format.ycbcr_enc = fmt->ycbcr_enc;
+ if (sdformat->format.quantization == V4L2_QUANTIZATION_DEFAULT)
+ sdformat->format.quantization = fmt->quantization;
+ } else {
+ if (sdformat->format.xfer_func == V4L2_XFER_FUNC_DEFAULT) {
+ sdformat->format.xfer_func =
+ V4L2_MAP_XFER_FUNC_DEFAULT(
+ sdformat->format.colorspace);
+ }
+ if (sdformat->format.ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT) {
+ sdformat->format.ycbcr_enc =
+ V4L2_MAP_YCBCR_ENC_DEFAULT(
+ sdformat->format.colorspace);
+ }
+ if (sdformat->format.quantization == V4L2_QUANTIZATION_DEFAULT) {
+ sdformat->format.quantization =
+ V4L2_MAP_QUANTIZATION_DEFAULT(
+ cc->cs != IPUV3_COLORSPACE_YUV,
+ sdformat->format.colorspace,
+ sdformat->format.ycbcr_enc);
+ }
+ }
Would it make sense for this to be a helper function?
Quite possible, the next subdev that has to set frame_interval on both
pads manually because its upstream source pad doesn't suport
frame_interval might want to do the same.
Hmm. I'm not sure I agree with this approach. If a subdev hardware
does not support any modification of the colourspace or field, then
it should not be modifyable at the source pad - it should retain the
propagated settings from the sink pad.
This new code is only relevant for the CSI_SINK_PAD.
I thought I had already sent a patch doing exactly that.
Yes. Right above the modification there is a call to csi_try_fmt which
will already fix up sdformat->format for the source pads. So for the
CSI_SRC_PAD_DIRECT and CSI_SRC_PAD_IDMAC this should amount to a no-op.
If might be better to move this into a separate function and only call
it if sdformat->pad == CSI_SINK_PAD.
I've done this, I will follow with the new patch. Philipp, let me know
if this looks ok to you and I will add your sign-off.
Steve
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