Hi Tim, Happy New Year! And pardon the delay. On 12/28/2017 01:56 PM, Tim Harvey wrote:
Steve/Hans, I'm trying to get interlaced capture working with the TDA1997x driver I've been working on which is connected to an IMX6 CSI. The particular board I'm currently testing on is an IMX6Q which has both a TDA19971 HDMI receiver as well as an ADV7180 analog video decoder. The media-ctl topology for this board can be found at http://dev.gateworks.com/docs/linux/media/imx6q-gw54xx-media.png. For adv7180 everything appears to be working as expected: - media-ctl --get-v4l2 '"adv7180 2-0020":0' shows: [fmt:UYVY8_2X8/720x480 field:interlaced colorspace:smpte170m] - he following captures/streams from the adv7180 using the vdic to de-interlace: media-ctl --link "adv7180 2-0020":0 -> "ipu2_csi1_mux":1[1] media-ctl --link "ipu2_csi1_mux":2 -> "ipu2_csi1":0[1] media-ctl --link "ipu2_csi1":1 -> "ipu2_vdic":0[1] media-ctl --link "ipu2_vdic":2 -> "ipu2_ic_prp":0[1] media-ctl --link "ipu2_ic_prp":2 -> "ipu2_ic_prpvf":0[1] media-ctl --link "ipu2_ic_prpvf":1 -> "ipu2_ic_prpvf capture":0[1] media-ctl --set-v4l2 'adv7180 2-0020':0 [fmt:UYVY2X8/720x480] media-ctl --set-v4l2 'ipu2_csi1_mux':2 [fmt:UYVY2X8/720x480 field:interlaced] media-ctl --set-v4l2 'ipu2_csi1':1 [fmt:UYVY2X8/720x480 field:interlaced] media-ctl --set-v4l2 'ipu2_vdic':2 [fmt:UYVY2X8/720x480 field:interlaced] media-ctl --set-v4l2 'ipu2_ic_prp':2 [fmt:UYVY2X8/720x480 field:none] media-ctl --set-v4l2 'ipu2_ic_prpvf':1 [fmt:UYVY2X8/720x480 field:none] v4l2-ctl -d /dev/video3 --set-fmt-video=width=720,height=480,pixelformat=UYVY # capture 1 frame v4l2-ctl -d /dev/video1 --stream-mmap --stream-skip=1 --stream-to=/tmp/x.raw --stream-count=1 # stream jpeg/rtp gst-launch-1.0 v4l2src device=/dev/video3 ! "video/x-raw,width=720,height=480,format=UYVY" ! jpegenc ! rtpjpegpay ! udpsink host=$SERVER port=5000" For the tda1997x I'm trying to do something similar: - media-ctl --get-v4l2 '"tda19971 2-0048":0' shows: [fmt:UYVY8_1X16/1920x1080 field:alternate colorspace:srgb] ^^^^ still not sure V4L2_FIELD_ALTERNATE/SRGB returned from tda1997x get_fmt is correct - I setup the pipeline with: media-ctl --link "tda19971 2-0048":0 -> "ipu1_csi0_mux":1[1] media-ctl --link "ipu1_csi0_mux":2 -> "ipu1_csi0":0[1] media-ctl --link "ipu1_csi0":1 -> "ipu1_vdic":0[1] media-ctl --link "ipu1_vdic":2 -> "ipu1_ic_prp":0[1] media-ctl --link "ipu1_ic_prp":2 -> "ipu1_ic_prpvf":0[1] media-ctl --link "ipu1_ic_prpvf":1 -> "ipu1_ic_prpvf capture":0[1] media-ctl --set-v4l2 'tda19971 2-0048':0[fmt:UYVY8_1X16/1920x1080] media-ctl --set-v4l2 'ipu1_csi0_mux':2[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_csi0':1[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_vdic':2[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_ic_prp':2[fmt:UYVY8_1X16/1920x1080 field:none] media-ctl --set-v4l2 'ipu1_ic_prpvf':1[fmt:UYVY8_1X16/1920x1080 field:none] v4l2-ctl -d /dev/video1 --set-fmt-video=width=1920,height=1080,pixelformat=UYVY v4l2-ctl -d /dev/v4l-subdev1 --set-dv-bt-timings=query v4l2-ctl -d /dev/video1 --stream-mmap --stream-skip=1 --stream-to=/tmp/x.raw --stream-count=1 ipu1_csi0: bayer/16-bit parallel buses must go to IDMAC pad ipu1_ic_prpvf: pipeline start failed with -22 VIDIOC_STREAMON: failed: Invalid argument
Right, according to the i.MX6 reference manual, if the CSI muxes are receiving from the parallel bus input with width >= 16 bits, that data can't be passed to the IC. It never really made much sense to me, and I can't remember if I ever tried it, maybe not, because I don't have such hardware. Try this hack as an experiment: modify is_parallel_16bit_bus() in imx-media-csi.c to simply return false, and see if the above pipeline works.
- if I try to use the idmac for deinterlace I configure the pipeline with: media-ctl --link "tda19971 2-0048":0 -> "ipu1_csi0_mux":1[1] media-ctl --link "ipu1_csi0_mux":2 -> "ipu1_csi0":0[1] media-ctl --link "ipu1_csi0":1 -> "ipu1_ic_prp":0[1] media-ctl --link "ipu1_ic_prp":2 -> "ipu1_ic_prpvf":0[1] media-ctl --link "ipu1_ic_prpvf":1 -> "ipu1_ic_prpvf capture":0[1] media-ctl --set-v4l2 'tda19971 2-0048':0[fmt:UYVY8_1X16/1920x1080] media-ctl --set-v4l2 'ipu1_csi0_mux':2[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_csi0':1[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_ic_prp':2[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_ic_prpvf':1[fmt:UYVY8_1X16/1920x1080 field:none] v4l2-ctl -d /dev/video1 --set-fmt-video=width=1920,height=1080,pixelformat=UYVY v4l2-ctl -d /dev/v4l-subdev1 --set-dv-bt-timings=query v4l2-ctl -d /dev/video1 --stream-mmap --stream-to=/tmp/x.raw --stream-count=1 ipu1_csi0: bayer/16-bit parallel buses must go to IDMAC pad ipu1_ic_prpvf: pipeline start failed with -22 VIDIOC_STREAMON: failed: Invalid argument
For idmac de-interlace (interweaving w/o motion compensation), you don't need to use the Image Converter paths (and the IC is not required here because I don't see any scaling or colorspace conversion in your pipeline). Send directly to the "ipu1_csi0 capture" device node. Try this, which doesn't need the hack I mentioned above: media-ctl --link "tda19971 2-0048":0 -> "ipu1_csi0_mux":1[1] media-ctl --link "ipu1_csi0_mux":2 -> "ipu1_csi0":0[1] media-ctl --link "ipu1_csi0":2 -> "ipu1_csi0 capture":0[1] media-ctl --set-v4l2 'tda19971 2-0048':0[fmt:UYVY8_1X16/1920x1080] media-ctl --set-v4l2 'ipu1_csi0_mux':2[fmt:UYVY8_1X16/1920x1080 field:alternate] media-ctl --set-v4l2 'ipu1_csi0':2[fmt:UYVY8_1X16/1920x1080 field:none v4l2-ctl -d /dev/video4 --set-fmt-video=width=1920,height=1080,pixelformat=UYVY v4l2-ctl -d /dev/v4l-subdev1 --set-dv-bt-timings=query v4l2-ctl -d /dev/video4 --stream-mmap --stream-to=/tmp/x.raw --stream-count=1 Steve
