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067d47f0ec
In certain cases, roundedcorners would negotiate to I420 even when user supplied a non-zero border radius. For example, the below pipeline leads to I420 being negotiated even though a non-zero border radius was given. Ideally, this pipeline should have failed at the negotiation stage. ```bash gst-launch-1.0 -v \ videotestsrc num-buffers=1000 pattern=white ! \ video/x-raw,width=320,height=180 ! \ roundedcorners border-radius-px=10 ! videobox border-alpha=0 top=-10 left=-10 right=-10 bottom=-10 fill=yellow ! \ compositor name=comp sink_0::xpos=960 sink_0::ypos=0 sink_0::width=320 sink_0::height=180 sink_0::alpha=1.0 sink_1::xpos=960 sink_1::ypos=180 sink_1::width=320 sink_1::height=180 sink_1::alpha=1.0 \ sink_2::xpos=960 sink_2::ypos=360 sink_2::width=320 sink_2::height=180 sink_2::alpha=1.0 sink_3::xpos=0 sink_3::ypos=0 sink_3::width=960 sink_3::height=720 sink_3::alpha=1.0 ! \ video/x-raw,width=1280,height=720! x264enc ! mp4mux ! filesink location=test.mp4 \ videotestsrc num-buffers=1000 pattern=red ! \ video/x-raw,width=320,height=180 ! roundedcorners border-radius-px=10 ! comp. \ videotestsrc num-buffers=1000 pattern=blue ! \ video/x-raw,width=320,height=180 ! roundedcorners border-radius-px=10 ! comp. \ videotestsrc num-buffers=1000 pattern=green ! \ video/x-raw,width=960,height=720 ! roundedcorners border-radius-px=10 ! comp. ``` If border radius is non-zero, we should not really allow negotiation to select I420. Fix this by returning only A420 for border-radius > 0 in `transform_caps` instead of returning both like earlier. Another example of a simpler pipeline like below which would earlier work ```bash gst-launch-1.0 videotestsrc pattern=red ! videoconvert ! video/x-raw,width=1923,height=1087,format=I420 ! roundedcorners border-radius-px=40 ! video/x-raw,format=I420 ! videoconvert ! gtksink ``` now fails with ```bash WARNING: erroneous pipeline: could not link roundedcorners0 to videoconvert1, roundedcorners0 can't handle caps video/x-raw, format=(string)I420 ``` Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1211> |
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