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Intersect caps with configured mode if not auto in ajasrc get_caps() to provide more constrained caps

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This commit is contained in:
Sebastian Dröge 2021-08-20 12:03:24 +03:00
parent 420a90b00b
commit b3f5169d55
1 changed files with 26 additions and 0 deletions
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26
gstajasrc.cpp
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@ -1288,6 +1288,32 @@ static GstCaps *gst_aja_src_get_caps(GstBaseSrc *bsrc, GstCaps *filter) {
caps = gst_pad_get_pad_template_caps(GST_BASE_SRC_PAD(self));
}
// Intersect with the configured video format if any to constrain the caps
// further.
if (self->video_format_setting != GST_AJA_VIDEO_FORMAT_AUTO) {
GstCaps *configured_caps =
gst_aja_video_format_to_caps(self->video_format_setting);
if (configured_caps) {
GstCaps *tmp;
// Remove pixel-aspect-ratio from the configured caps to allow for both
// widescreen and non-widescreen PAL/NTSC. It's added back by the
// template caps above when intersecting.
guint n = gst_caps_get_size(configured_caps);
for (guint i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure(configured_caps, i);
gst_structure_remove_fields(s, "pixel-aspect-ratio", NULL);
}
tmp = gst_caps_intersect(caps, configured_caps);
gst_caps_unref(caps);
gst_caps_unref(configured_caps);
caps = tmp;
}
}
if (filter) {
GstCaps *tmp =
gst_caps_intersect_full(filter, caps, GST_CAPS_INTERSECT_FIRST);