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interlace: Also handle a missing "interlace-mode" field as progressive

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Otherwise caps negotiation will fail in situations that are supposed
to work, like:

  "video/x-raw,framerate=(fraction)60/1" ! interlace field-pattern=0 ! "video/x-raw,framerate=(fraction)30/1"

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2337>
This commit is contained in:
Sebastian Dröge 2022-04-29 19:08:46 +03:00 committed by Tim-Philipp Müller
parent 30afe21cd1
commit f2c0d0edf4
1 changed files with 2 additions and 1 deletions
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3
subprojects/gst-plugins-bad/gst/interlace/gstinterlace.c
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@ -775,7 +775,8 @@ gst_interlace_caps_double_framerate (GstCaps * caps, gboolean half,
interlace_mode = gst_structure_get_string (s, "interlace-mode");
/* Do not double the framerate for interlaced - we will either passthrough
* or fail to negotiate */
if (skip_progressive && (g_strcmp0 (interlace_mode, "progressive") != 0))
if (skip_progressive && (interlace_mode
&& g_strcmp0 (interlace_mode, "progressive") != 0))
continue;
if (G_VALUE_TYPE (val) == GST_TYPE_FRACTION) {