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gst/gstcaps.*: Add simplify function

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Original commit message from CVS:
* gst/gstcaps.c: (gst_caps_normalize), (simplify_foreach),
(gst_caps_structure_simplify), (gst_caps_simplify):
* gst/gstcaps.h:
Add simplify function
* gst/gstpad.c: (gst_pad_link_try), (gst_pad_try_set_caps),
(gst_pad_perform_negotiate), (gst_pad_is_negotiated):
* gst/gstpad.h:
Copy over srcnotify, sinknotify when calling old pad_link
functions.  Add new is_negotiated() function.
* gst/gststructure.c: (gst_structure_copy):
Fix an incredibly stupid bug that should have been noticed
weeks ago.  _copy() returned the argument, not the new copy.
This commit is contained in:
David Schleef 2003-12-30 04:59:48 +00:00
parent abe422b141
commit cd1d72deb2
6 changed files with 100 additions and 5 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2003-12-29 David Schleef <ds@schleef.org>
* gst/gstcaps.c: (gst_caps_normalize), (simplify_foreach),
(gst_caps_structure_simplify), (gst_caps_simplify):
* gst/gstcaps.h:
Add simplify function
* gst/gstpad.c: (gst_pad_link_try), (gst_pad_try_set_caps),
(gst_pad_perform_negotiate), (gst_pad_is_negotiated):
* gst/gstpad.h:
Copy over srcnotify, sinknotify when calling old pad_link
functions. Add new is_negotiated() function.
* gst/gststructure.c: (gst_structure_copy):
Fix an incredibly stupid bug that should have been noticed
weeks ago. _copy() returned the argument, not the new copy.
2003-12-27 Benjamin Otte <in7y118@public.uni-hamburg.de>
* gst/gstcaps.c: (gst_caps_append):

56
gst/gstcaps.c
View file

@ -568,10 +568,66 @@ GstCaps *gst_caps_union (const GstCaps *caps1, const GstCaps *caps2)
GstCaps *gst_caps_normalize (const GstCaps *caps)
{
g_critical ("unimplemented");
return NULL;
}
static gboolean
simplify_foreach (GQuark field_id, GValue *value, gpointer user_data)
{
GstStructure *s2 = (GstStructure *) user_data;
const GValue *v2;
v2 = gst_structure_id_get_value (s2, field_id);
if (v2 == NULL) return FALSE;
if (gst_value_compare (value, v2) == GST_VALUE_EQUAL) return TRUE;
return FALSE;
}
static gboolean
gst_caps_structure_simplify (GstStructure *struct1, const GstStructure *struct2)
{
/* FIXME this is just a simple compare. Better would be to merge
* the two structures */
if (struct1->name != struct2->name) return FALSE;
if (struct1->fields->len != struct2->fields->len) return FALSE;
return gst_structure_foreach (struct1, simplify_foreach, (void *)struct2);
}
GstCaps *gst_caps_simplify (const GstCaps *caps)
{
int i;
int j;
GstCaps *newcaps;
GstStructure *structure;
GstStructure *struct2;
if (gst_caps_get_size (caps) < 2) {
return gst_caps_copy (caps);
}
newcaps = gst_caps_new_empty ();
for(i=0;i<gst_caps_get_size (caps);i++){
structure = gst_caps_get_structure (caps, i);
for(j=0;j<gst_caps_get_size (newcaps);j++){
struct2 = gst_caps_get_structure (caps, i);
if (gst_caps_structure_simplify (struct2, structure)) {
break;
}
}
if (j==gst_caps_get_size (newcaps)) {
gst_caps_append_structure (newcaps, gst_structure_copy(structure));
}
}
return newcaps;
}
#ifndef GST_DISABLE_LOADSAVE
xmlNodePtr gst_caps_save_thyself (const GstCaps *caps, xmlNodePtr parent)
{

1
gst/gstcaps.h
View file

@ -101,6 +101,7 @@ gboolean gst_caps_is_always_compatible (const GstCaps *caps1,
GstCaps *gst_caps_intersect (const GstCaps *caps1, const GstCaps *caps2);
GstCaps *gst_caps_union (const GstCaps *caps1, const GstCaps *caps2);
GstCaps *gst_caps_normalize (const GstCaps *caps);
GstCaps *gst_caps_simplify (const GstCaps *caps);
#ifndef GST_DISABLE_LOADSAVE
xmlNodePtr gst_caps_save_thyself (const GstCaps *caps, xmlNodePtr parent);

28
gst/gstpad.c
View file

@ -1205,6 +1205,8 @@ gst_pad_link_try (GstPadLink *link)
ret = gst_pad_link_negotiate (link);
if (ret == GST_PAD_LINK_REFUSED) {
oldlink->srcnotify = link->srcnotify;
oldlink->sinknotify = link->sinknotify;
if (oldlink && oldlink->caps && !gst_pad_link_call_link_functions (oldlink))
g_warning ("pads don't accept old caps. We assume they did though");
gst_pad_link_free (link);
@ -1257,6 +1259,7 @@ GstPadLinkReturn
gst_pad_try_set_caps (GstPad *pad, const GstCaps *caps)
{
GstPadLink *link;
GstPadLinkReturn ret;
g_return_val_if_fail (pad != NULL, GST_PAD_LINK_REFUSED);
g_return_val_if_fail (GST_IS_PAD (pad), GST_PAD_LINK_REFUSED);
@ -1306,7 +1309,9 @@ gst_pad_try_set_caps (GstPad *pad, const GstCaps *caps)
link->sinknotify = FALSE;
}
return gst_pad_link_try (link);
ret = gst_pad_link_try (link);
return ret;
}
@ -1829,7 +1834,7 @@ _gst_pad_default_fixate_func (GstPad *pad, GstCaps *caps, gpointer unused)
gboolean
gst_pad_perform_negotiate (GstPad *srcpad, GstPad *sinkpad)
{
return gst_pad_renegotiate (srcpad) >= 0;
return GST_PAD_LINK_SUCCESSFUL (gst_pad_renegotiate (srcpad));
}
void
@ -2020,6 +2025,25 @@ gst_pad_proxy_link (GstPad *pad, const GstCaps *caps)
return gst_pad_try_set_caps (pad, caps);
}
/**
* gst_pad_is_negotiated:
* @pad: a #GstPad to get the negotiation status of
*
* Returns: TRUE if the pad has successfully negotiated caps.
*/
gboolean
gst_pad_is_negotiated (GstPad *pad)
{
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
if (!GST_PAD_REALIZE (pad))
return FALSE;
if (!GST_RPAD_LINK (pad))
return FALSE;
return (GST_RPAD_LINK (pad)->caps != NULL);
}
/**
* gst_pad_get_negotiated_caps:
* @pad: a #GstPad to get the negotiated capabilites of

1
gst/gstpad.h
View file

@ -402,6 +402,7 @@ GstPad* gst_pad_get_peer (GstPad *pad);
/* capsnego functions */
G_CONST_RETURN GstCaps* gst_pad_get_negotiated_caps (GstPad *pad);
gboolean gst_pad_is_negotiated (GstPad *pad);
GstCaps* gst_pad_get_caps (GstPad *pad);
G_CONST_RETURN GstCaps* gst_pad_get_pad_template_caps (GstPad *pad);
GstPadLinkReturn gst_pad_try_set_caps (GstPad *pad, const GstCaps *caps);

4
gst/gststructure.c
View file

@ -211,8 +211,6 @@ GstStructure *gst_structure_copy(GstStructure *structure)
g_return_val_if_fail(structure != NULL, NULL);
new_structure = gst_structure_empty_new(g_quark_to_string(structure->name));
new_structure->fields = g_array_set_size(new_structure->fields,
structure->fields->len);
new_structure->name = structure->name;
for(i=0;i<structure->fields->len;i++){
@ -225,7 +223,7 @@ GstStructure *gst_structure_copy(GstStructure *structure)
g_array_append_val(new_structure->fields, new_field);
}
return structure;
return new_structure;
}
/**