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v4l2src: Force renegotiation on resolution change

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As mandated by the specification, make sure to cycle through streamoff
/ streamon regardless if the caps have changed or not.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
This commit is contained in:
Nicolas Dufresne 2021-02-10 15:49:03 -05:00
parent 7b8fe18d06
commit b750fb2d5b
1 changed files with 15 additions and 1 deletions
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16
sys/v4l2/gstv4l2src.c
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@ -903,7 +903,21 @@ gst_v4l2src_create (GstPushSrc * src, GstBuffer ** buf)
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
if (ret == GST_V4L2_FLOW_RESOLUTION_CHANGE) {
GST_INFO_OBJECT (v4l2src, "Resolution change detected.");
gst_base_src_negotiate (GST_BASE_SRC (src));
/* It is required to always cycle through streamoff, we also need to
* streamoff in order to allow locking a new DV_TIMING which will
* influence the output of TRY_FMT */
gst_v4l2src_stop (GST_BASE_SRC (src));
/* Force renegotiation */
v4l2src->renegotiation_adjust = v4l2src->offset + 1;
v4l2src->pending_set_fmt = TRUE;
if (!gst_base_src_negotiate (GST_BASE_SRC (src))) {
ret = GST_FLOW_NOT_NEGOTIATED;
goto error;
}
continue;
}
goto alloc_failed;