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videoconvert: try to preserver colorimetry and chroma-site

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Try to preserve the original chroma-site and colorimetry when nothing else was
negotiated.
This commit is contained in:
Wim Taymans 2012-02-20 12:36:02 +01:00
parent 658e28cd81
commit 6678c531e0
1 changed files with 33 additions and 0 deletions
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33
gst/videoconvert/gstvideoconvert.c
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@ -132,6 +132,37 @@ gst_video_convert_caps_remove_format_info (GstCaps * caps)
return res;
}
static void
gst_video_convert_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ss, *ds;
const gchar *val;
GST_DEBUG_OBJECT (trans, "fixating caps %" GST_PTR_FORMAT, othercaps);
ss = gst_caps_get_structure (caps, 0);
ds = gst_caps_get_structure (othercaps, 0);
/* first try to preserve chroma-site and colorimetry */
if ((val = gst_structure_get_string (ss, "chroma-site"))) {
if (gst_structure_has_field (ds, "chroma-site"))
gst_structure_fixate_field_string (ds, "chroma-site", val);
else
gst_structure_set (ds, "chroma-site", G_TYPE_STRING, val, NULL);
}
if ((val = gst_structure_get_string (ss, "colorimetry"))) {
if (gst_structure_has_field (ds, "colorimetry"))
gst_structure_fixate_field_string (ds, "colorimetry", val);
else
gst_structure_set (ds, "colorimetry", G_TYPE_STRING, val, NULL);
}
/* fixate remaining fields */
gst_caps_fixate (othercaps);
}
/* The caps can be transformed into any other caps with format info removed.
* However, we should prefer passthrough, so if passthrough is possible,
* put it first in the list. */
@ -323,6 +354,8 @@ gst_video_convert_class_init (GstVideoConvertClass * klass)
gstbasetransform_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_convert_transform_caps);
gstbasetransform_class->fixate_caps =
GST_DEBUG_FUNCPTR (gst_video_convert_fixate_caps);
gstbasetransform_class->passthrough_on_same_caps = TRUE;