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v4l2src: Stub preferred resolution support

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This stubs the ability to use preferred resolution from digital
video timings, analog TV standards or driver reported native
resolution.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
This commit is contained in:
Nicolas Dufresne 2021-02-08 17:27:20 -05:00
parent 1b21c1b15b
commit c0fdaffc55
1 changed files with 18 additions and 2 deletions
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20
sys/v4l2/gstv4l2src.c
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@ -499,6 +499,13 @@ gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps, GstStructure * pref_s)
return fcaps;
}
static GstStructure *
gst_v4l2src_query_preferred_dv_timings (GstV4l2Src * v4l2src)
{
GST_FIXME_OBJECT (v4l2src, "query dv_timings not implements");
return NULL;
}
static GstStructure *
gst_v4l2src_query_preferred_size (GstV4l2Src * v4l2src)
{
@ -526,6 +533,15 @@ gst_v4l2src_query_preferred_size (GstV4l2Src * v4l2src)
("Signal recovered"), ("Input source detected"));
v4l2src->no_signal = FALSE;
}
if (in.capabilities & V4L2_IN_CAP_NATIVE_SIZE) {
GST_FIXME_OBJECT (v4l2src, "missing support for native video size");
} else if (in.capabilities & V4L2_IN_CAP_DV_TIMINGS) {
return gst_v4l2src_query_preferred_dv_timings (v4l2src);
} else if (in.capabilities & V4L2_IN_CAP_STD) {
GST_FIXME_OBJECT (v4l2src, "missing support for video standards");
}
return pref;
}
@ -585,7 +601,7 @@ gst_v4l2src_negotiate (GstBaseSrc * basesrc)
goto done;
}
GST_DEBUG_OBJECT (basesrc, "fixated to: %" GST_PTR_FORMAT, caps);
GST_INFO_OBJECT (basesrc, "fixated to: %" GST_PTR_FORMAT, caps);
if (gst_caps_is_any (caps)) {
/* hmm, still anything, so element can do anything and
@ -607,7 +623,7 @@ done:
no_nego_needed:
{
GST_DEBUG_OBJECT (basesrc, "no negotiation needed");
GST_INFO_OBJECT (basesrc, "no negotiation needed");
if (thiscaps)
gst_caps_unref (thiscaps);
return TRUE;