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jpegenc: more generic sink getcaps

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This commit is contained in:
Mark Nauwelaerts 2010-04-30 12:47:01 +02:00
parent cec48383b1
commit c5614dbb40
1 changed files with 24 additions and 16 deletions
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40
ext/jpeg/gstjpegenc.c
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@ -314,30 +314,38 @@ static GstCaps *
gst_jpegenc_getcaps (GstPad * pad)
{
GstJpegEnc *jpegenc = GST_JPEGENC (gst_pad_get_parent (pad));
GstCaps *caps;
int i;
GstCaps *caps, *othercaps;
const GstCaps *templ;
gint i, j;
GstStructure *structure = NULL;
/* we want to proxy properties like width, height and framerate from the
other end of the element */
caps = gst_pad_get_allowed_caps (jpegenc->srcpad);
othercaps = gst_pad_get_allowed_caps (jpegenc->srcpad);
if (othercaps == NULL ||
gst_caps_is_empty (othercaps) || gst_caps_is_any (othercaps))
return gst_caps_copy (gst_pad_get_pad_template_caps (pad));
if (caps == NULL) {
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
} else if (gst_caps_is_any (caps)) {
gst_caps_unref (caps);
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
} else {
caps = gst_caps_make_writable (caps);
}
caps = gst_caps_new_empty ();
templ = gst_pad_get_pad_template_caps (pad);
for (i = 0; i < gst_caps_get_size (caps); i++) {
structure = gst_caps_get_structure (caps, i);
for (i = 0; i < gst_caps_get_size (templ); i++) {
/* pick fields from peer caps */
for (j = 0; j < gst_caps_get_size (othercaps); j++) {
GstStructure *s = gst_caps_get_structure (othercaps, j);
const GValue *val;
gst_structure_set_name (structure, "video/x-raw-yuv");
gst_structure_set (structure, "format", GST_TYPE_FOURCC,
GST_STR_FOURCC ("I420"), NULL);
structure = gst_structure_copy (gst_caps_get_structure (templ, i));
if ((val = gst_structure_get_value (s, "width")))
gst_structure_set_value (structure, "width", val);
if ((val = gst_structure_get_value (s, "height")))
gst_structure_set_value (structure, "height", val);
if ((val = gst_structure_get_value (s, "framerate")))
gst_structure_set_value (structure, "framerate", val);
gst_caps_merge_structure (caps, structure);
}
}
gst_object_unref (jpegenc);