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v4l2codecs: decoder: Generalize size enumeration caps

Browse source 
By reducing the generated caps to the minimal number of fields and
using intersections instead of merges. This will allow us to reuse the
result in the future.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6376>
This commit is contained in:
Robert Mader 2024-02-17 04:20:16 +01:00 committed by GStreamer Marge Bot
parent 7b6d6fe080
commit b5fe2319f3
1 changed files with 12 additions and 4 deletions
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16
subprojects/gst-plugins-bad/sys/v4l2codecs/gstv4l2decoder.c
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@ -398,8 +398,7 @@ gst_v4l2_decoder_enum_size_for_format (GstV4l2Decoder * self,
size.discrete.width, size.discrete.height, index,
GST_FOURCC_ARGS (pixelformat));
return gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING,
gst_video_format_to_string (format),
return gst_caps_new_simple ("video/x-raw",
"width", G_TYPE_INT, size.discrete.width,
"height", G_TYPE_INT, size.discrete.height, NULL);
}
@ -409,7 +408,7 @@ gst_v4l2_decoder_probe_caps_for_format (GstV4l2Decoder * self,
guint32 pixelformat, gint unscaled_width, gint unscaled_height)
{
gint index = 0;
GstCaps *caps, *tmp;
GstCaps *caps, *tmp, *size_caps;
GstVideoFormat format;
GST_DEBUG_OBJECT (self, "enumerate size for %" GST_FOURCC_FORMAT,
@ -421,11 +420,20 @@ gst_v4l2_decoder_probe_caps_for_format (GstV4l2Decoder * self,
caps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING,
gst_video_format_to_string (format), NULL);
size_caps = gst_caps_new_empty ();
while ((tmp = gst_v4l2_decoder_enum_size_for_format (self, pixelformat,
index++, unscaled_width, unscaled_height))) {
caps = gst_caps_merge (caps, tmp);
size_caps = gst_caps_merge (size_caps, tmp);
}
if (!gst_caps_is_empty (size_caps)) {
tmp = caps;
caps = gst_caps_intersect_full (tmp, size_caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (tmp);
}
gst_caps_unref (size_caps);
return caps;
}