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ext/ladspa/gstsignalprocessor.c (gst_signal_processor_fixate)

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Original commit message from CVS:
2007-01-12  Andy Wingo  <wingo@pobox.com>

* ext/ladspa/gstsignalprocessor.c (gst_signal_processor_fixate)
(gst_signal_processor_ouija_caps, gst_signal_processor_prepare):
Remove fixate/ouija stuff, thankfully, due to the new
part-negotiation.txt pull-mode negotiation scheme.
(gst_signal_processor_setcaps_pull)
(gst_signal_processor_setcaps): Implement upstream set_caps pull
proxying for pull mode. Now this works: ladspa-sine-fcac !
audioconvert ! alsasink.
This commit is contained in:
Andy Wingo 2007-01-12 21:58:43 +00:00
parent 1b07bbad86
commit 57f11c5ed8
2 changed files with 66 additions and 39 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2007-01-12 Andy Wingo <wingo@pobox.com>
* ext/ladspa/gstsignalprocessor.c (gst_signal_processor_fixate)
(gst_signal_processor_ouija_caps, gst_signal_processor_prepare):
Remove fixate/ouija stuff, thankfully, due to the new
part-negotiation.txt pull-mode negotiation scheme.
(gst_signal_processor_setcaps_pull)
(gst_signal_processor_setcaps): Implement upstream set_caps pull
proxying for pull mode. Now this works: ladspa-sine-fcac !
audioconvert ! alsasink.
2007-01-12 Edgard Lima <edgard.lima@indt.org.br>
Patch by: Rosfran Borges <rosfran.borges@indt.org.br>

94
ext/ladspa/gstsignalprocessor.c
View file

@ -156,7 +156,6 @@ static GstFlowReturn gst_signal_processor_getrange (GstPad * pad,
static GstFlowReturn gst_signal_processor_chain (GstPad * pad,
GstBuffer * buffer);
static gboolean gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps);
static void gst_signal_processor_fixate (GstPad * pad, GstCaps * caps);
static void
@ -199,8 +198,6 @@ gst_signal_processor_add_pad_from_template (GstSignalProcessor * self,
gst_pad_set_setcaps_function (new,
GST_DEBUG_FUNCPTR (gst_signal_processor_setcaps));
gst_pad_set_fixatecaps_function (new,
GST_DEBUG_FUNCPTR (gst_signal_processor_fixate));
if (templ->direction == GST_PAD_SINK) {
GST_DEBUG ("added new sink pad");
@ -372,6 +369,52 @@ gst_signal_processor_cleanup (GstSignalProcessor * self)
self->state = GST_SIGNAL_PROCESSOR_STATE_NULL;
}
static gboolean
gst_signal_processor_setcaps_pull (GstSignalProcessor * self, GstPad * pad,
GstCaps * caps)
{
if (GST_PAD_IS_SRC (pad)) {
GList *l;
for (l = GST_ELEMENT (self)->sinkpads; l; l = l->next)
if (!gst_pad_set_caps (GST_PAD (l->data), caps))
goto src_setcaps_failed;
} else {
GstPad *peer;
gboolean res;
peer = gst_pad_get_peer (pad);
if (!peer)
goto unlinked_sink;
res = gst_pad_set_caps (peer, caps);
gst_object_unref (peer);
if (!res)
goto peer_setcaps_failed;
}
return TRUE;
src_setcaps_failed:
{
/* not logging, presumably the sink pad already logged */
return FALSE;
}
unlinked_sink:
{
GST_WARNING_OBJECT (self, "unlinked sink pad %" GST_PTR_FORMAT ", I wonder "
"how we passed activate_pull()", pad);
return FALSE;
}
peer_setcaps_failed:
{
GST_INFO_OBJECT (self, "peer of %" GST_PTR_FORMAT " did not accept caps",
pad);
return FALSE;
}
}
static gboolean
gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
{
@ -379,6 +422,10 @@ gst_signal_processor_setcaps (GstPad * pad, GstCaps * caps)
self = GST_SIGNAL_PROCESSOR (gst_pad_get_parent (pad));
if (self->mode == GST_ACTIVATE_PULL && !gst_caps_is_equal (caps, self->caps)
&& !gst_signal_processor_setcaps_pull (self, pad, caps))
goto setcaps_pull_failed;
/* the whole processor has one caps; if the sample rate changes, let subclass
implementations know */
if (!gst_caps_is_equal (caps, self->caps)) {
@ -430,6 +477,11 @@ start_failed:
gst_object_unref (self);
return FALSE;
}
setcaps_pull_failed:
{
gst_object_unref (self);
return FALSE;
}
impossible:
{
g_critical ("something impossible happened");
@ -438,14 +490,6 @@ impossible:
}
}
static void
gst_signal_processor_fixate (GstPad * pad, GstCaps * caps)
{
/* last-ditch attempt at sanity */
gst_structure_fixate_field_nearest_int
(gst_caps_get_structure (caps, 0), "rate", 44100);
}
static gboolean
gst_signal_processor_event (GstPad * pad, GstEvent * event)
{
@ -478,32 +522,6 @@ gst_signal_processor_event (GstPad * pad, GstEvent * event)
return ret;
}
static void
gst_signal_processor_ouija_caps (GstSignalProcessor * self)
{
GstElement *element;
GstPad *srcpad;
GstCaps *srccaps, *peercaps, *caps;
/* we have no sink pads, no way to know what caps we should be producing.
guess! */
element = GST_ELEMENT (self);
g_return_if_fail (element->sinkpads == NULL);
g_return_if_fail (element->srcpads != NULL);
srcpad = GST_PAD (element->srcpads->data);
srccaps = gst_pad_get_caps (srcpad);
peercaps = gst_pad_peer_get_caps (srcpad);
caps = gst_caps_intersect (srccaps, peercaps);
gst_caps_unref (srccaps);
gst_caps_unref (peercaps);
gst_caps_truncate (caps);
gst_pad_fixate_caps (srcpad, caps);
gst_signal_processor_setcaps (srcpad, caps);
gst_caps_unref (caps);
}
static guint
gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
{
@ -552,8 +570,6 @@ gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
}
}
if (!self->caps)
gst_signal_processor_ouija_caps (self);
g_return_val_if_fail (GST_SIGNAL_PROCESSOR_IS_RUNNING (self), 0);
/* now allocate for any remaining outputs */