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gst/elements/: Use gst_pad_proxy_getcaps().
Original commit message from CVS: * gst/elements/gstaggregator.c: * gst/elements/gsttee.c: Use gst_pad_proxy_getcaps(). * gst/gstpad.c: * gst/gstpad.h: Add gst_pad_proxy_getcaps(), which filter elements can use as a generic getcaps implementation. Fix gst_pad_get_allowed_caps(). It just wasn't doing what was advertised.
This commit is contained in:
David Schleef
parent
91954ff66b
commit
778c24a58a
7 changed files with 73 additions and 83 deletions
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2003-12-23 David Schleef <ds@schleef.org>
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* gst/elements/gstaggregator.c:
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* gst/elements/gsttee.c:
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Use gst_pad_proxy_getcaps().
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* gst/gstpad.c:
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* gst/gstpad.h:
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Add gst_pad_proxy_getcaps(), which filter elements can use
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as a generic getcaps implementation.
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Fix gst_pad_get_allowed_caps(). It just wasn't doing what
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was advertised.
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2003-12-23 David Schleef <ds@schleef.org>
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* gst/gstpad.c:
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@ -162,6 +162,7 @@ static void
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gst_aggregator_init (GstAggregator *aggregator)
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{
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aggregator->srcpad = gst_pad_new ("src", GST_PAD_SRC);
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gst_pad_set_getcaps_function (aggregator->srcpad, gst_pad_proxy_getcaps);
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gst_element_add_pad (GST_ELEMENT (aggregator), aggregator->srcpad);
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aggregator->numsinkpads = 0;
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@ -196,6 +197,7 @@ gst_aggregator_request_new_pad (GstElement *element, GstPadTemplate *templ, cons
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if (!AGGREGATOR_IS_LOOP_BASED (aggregator)) {
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gst_pad_set_chain_function (sinkpad, gst_aggregator_chain);
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}
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gst_pad_set_getcaps_function (sinkpad, gst_pad_proxy_getcaps);
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gst_element_add_pad (GST_ELEMENT (aggregator), sinkpad);
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aggregator->sinkpads = g_list_prepend (aggregator->sinkpads, sinkpad);
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@ -181,41 +181,6 @@ gst_tee_srclink (GstPad *pad, const GstCaps *caps)
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return gst_pad_proxy_link (tee->sinkpad, caps);
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}
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static GstCaps*
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gst_tee_getcaps (GstPad *pad)
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{
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GstCaps *caps = GST_CAPS_ANY;
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GstTee *tee;
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const GList *pads;
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GST_DEBUG ( "gst_tee_getcaps");
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tee = GST_TEE (gst_pad_get_parent (pad));
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pads = gst_element_get_pad_list (GST_ELEMENT (tee));
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while (pads) {
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GstPad *srcpad = GST_PAD (pads->data);
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GstPad *peer;
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const GstCaps *peercaps;
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GstCaps *newcaps;
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pads = g_list_next (pads);
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peer = gst_pad_get_peer(srcpad);
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if(!peer){
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continue;
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}
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peercaps = gst_pad_get_caps (peer);
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newcaps = gst_caps_intersect (caps, peercaps);
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gst_caps_free (caps);
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caps = newcaps;
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}
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return caps;
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}
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static void
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gst_tee_init (GstTee *tee)
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{
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@ -223,7 +188,7 @@ gst_tee_init (GstTee *tee)
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gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
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gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
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gst_pad_set_link_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_sinklink));
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gst_pad_set_getcaps_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_getcaps));
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gst_pad_set_getcaps_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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tee->silent = FALSE;
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tee->last_message = NULL;
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@ -282,7 +247,7 @@ gst_tee_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar
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srcpad = gst_pad_new_from_template (templ, name);
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g_free (name);
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gst_pad_set_link_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_srclink));
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gst_pad_set_getcaps_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_getcaps));
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gst_pad_set_getcaps_function (srcpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_element_add_pad (GST_ELEMENT (tee), srcpad);
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GST_PAD_ELEMENT_PRIVATE (srcpad) = NULL;
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61
gst/gstpad.c
61
gst/gstpad.c
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@ -1739,6 +1739,47 @@ gst_pad_relink_filtered (GstPad *srcpad, GstPad *sinkpad,
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return FALSE;
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}
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/**
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* gst_pad_proxy_getcaps:
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* @pad: a #GstPad to proxy.
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*
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* Calls gst_pad_get_allowed_caps() for every other pad belonging to the
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* same element as @pad, and returns the intersection of the results.
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*
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* This function is useful as a default getcaps function for an element
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* that can handle any stream format, but requires all its pads to have
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* the same caps. Two such elements are tee and aggregator.
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*
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* Returns: the intersection of the other pads' allowed caps.
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*/
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GstCaps *
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gst_pad_proxy_getcaps (GstPad *pad)
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{
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GstElement *element;
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const GList *pads;
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GstCaps *caps;
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element = gst_pad_get_parent (pad);
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pads = gst_element_get_pad_list (element);
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caps = gst_caps_new_any ();
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while (pads) {
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GstPad *otherpad = GST_PAD (pads->data);
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GstCaps *temp;
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if (otherpad != pad) {
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temp = gst_caps_intersect (caps, gst_pad_get_allowed_caps (pad));
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gst_caps_free (caps);
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caps = temp;
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}
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pads = g_list_next (pads);
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}
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return caps;
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}
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/**
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* gst_pad_proxy_link:
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* @pad: a #GstPad to proxy to.
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@ -1928,10 +1969,11 @@ GstCaps*
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gst_pad_get_allowed_caps (GstPad *pad)
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{
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GstRealPad *realpad;
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GstCaps *mycaps;
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const GstCaps *mycaps;
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GstCaps *caps;
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GstCaps *filtercaps;
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GstCaps *peercaps;
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GstCaps *icaps;
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GstPadLink *link;
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g_return_val_if_fail (pad != NULL, NULL);
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g_return_val_if_fail (GST_IS_PAD (pad), NULL);
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@ -1941,21 +1983,22 @@ gst_pad_get_allowed_caps (GstPad *pad)
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GST_CAT_DEBUG (GST_CAT_PROPERTIES, "get allowed caps of %s:%s",
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GST_DEBUG_PAD_NAME (pad));
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mycaps = gst_pad_get_caps (pad);
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mycaps = gst_pad_get_pad_template_caps (pad);
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if (GST_RPAD_PEER (realpad) == NULL) {
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return mycaps;
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return gst_caps_copy (mycaps);
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}
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peercaps = gst_pad_get_caps (GST_PAD_PEER (realpad));
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caps = gst_caps_intersect (mycaps, peercaps);
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gst_caps_free (mycaps);
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gst_caps_free (peercaps);
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filtercaps = GST_RPAD_APPFILTER (realpad);
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if (filtercaps) {
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return gst_caps_intersect (caps, filtercaps);
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link = GST_RPAD_LINK (realpad);
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if (link->filtercaps) {
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icaps = gst_caps_intersect (caps, link->filtercaps);
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gst_caps_free (caps);
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return icaps;
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} else {
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return gst_caps_copy (caps);
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return caps;
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}
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}
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@ -408,6 +408,7 @@ gboolean gst_pad_check_compatibility (GstPad *srcpad, GstPad *sinkpad);
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void gst_pad_set_getcaps_function (GstPad *pad, GstPadGetCapsFunction getcaps);
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void gst_pad_set_fixate_function (GstPad *pad, GstPadFixateFunction fixate);
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GstCaps * gst_pad_proxy_getcaps (GstPad *pad);
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GstPadLinkReturn gst_pad_proxy_link (GstPad *pad, const GstCaps *caps);
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gboolean gst_pad_relink_filtered (GstPad *srcpad, GstPad *sinkpad, const GstCaps *filtercaps);
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gboolean gst_pad_perform_negotiate (GstPad *srcpad, GstPad *sinkpad);
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@ -162,6 +162,7 @@ static void
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gst_aggregator_init (GstAggregator *aggregator)
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{
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aggregator->srcpad = gst_pad_new ("src", GST_PAD_SRC);
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gst_pad_set_getcaps_function (aggregator->srcpad, gst_pad_proxy_getcaps);
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gst_element_add_pad (GST_ELEMENT (aggregator), aggregator->srcpad);
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aggregator->numsinkpads = 0;
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@ -196,6 +197,7 @@ gst_aggregator_request_new_pad (GstElement *element, GstPadTemplate *templ, cons
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if (!AGGREGATOR_IS_LOOP_BASED (aggregator)) {
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gst_pad_set_chain_function (sinkpad, gst_aggregator_chain);
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}
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gst_pad_set_getcaps_function (sinkpad, gst_pad_proxy_getcaps);
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gst_element_add_pad (GST_ELEMENT (aggregator), sinkpad);
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aggregator->sinkpads = g_list_prepend (aggregator->sinkpads, sinkpad);
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@ -181,41 +181,6 @@ gst_tee_srclink (GstPad *pad, const GstCaps *caps)
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return gst_pad_proxy_link (tee->sinkpad, caps);
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}
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static GstCaps*
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gst_tee_getcaps (GstPad *pad)
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{
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GstCaps *caps = GST_CAPS_ANY;
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GstTee *tee;
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const GList *pads;
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GST_DEBUG ( "gst_tee_getcaps");
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tee = GST_TEE (gst_pad_get_parent (pad));
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pads = gst_element_get_pad_list (GST_ELEMENT (tee));
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while (pads) {
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GstPad *srcpad = GST_PAD (pads->data);
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GstPad *peer;
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const GstCaps *peercaps;
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GstCaps *newcaps;
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pads = g_list_next (pads);
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peer = gst_pad_get_peer(srcpad);
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if(!peer){
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continue;
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}
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peercaps = gst_pad_get_caps (peer);
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newcaps = gst_caps_intersect (caps, peercaps);
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gst_caps_free (caps);
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caps = newcaps;
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}
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return caps;
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}
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static void
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gst_tee_init (GstTee *tee)
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{
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@ -223,7 +188,7 @@ gst_tee_init (GstTee *tee)
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gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
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gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
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gst_pad_set_link_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_sinklink));
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gst_pad_set_getcaps_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_getcaps));
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gst_pad_set_getcaps_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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tee->silent = FALSE;
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tee->last_message = NULL;
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@ -282,7 +247,7 @@ gst_tee_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar
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srcpad = gst_pad_new_from_template (templ, name);
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g_free (name);
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gst_pad_set_link_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_srclink));
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gst_pad_set_getcaps_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_getcaps));
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gst_pad_set_getcaps_function (srcpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_element_add_pad (GST_ELEMENT (tee), srcpad);
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GST_PAD_ELEMENT_PRIVATE (srcpad) = NULL;
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