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gst/gstpad.c: Cleanup activation code. Reset old state if activation failed.

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Original commit message from CVS:
* gst/gstpad.c: (pre_activate), (post_activate),
(gst_pad_activate_pull), (gst_pad_activate_push):
Cleanup activation code. Reset old state if
activation failed.
This commit is contained in:
Wim Taymans 2005-10-12 10:05:36 +00:00
parent 0fd18045b1
commit e11ddea888
2 changed files with 42 additions and 38 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2005-10-12 Wim Taymans <wim@fluendo.com>
* gst/gstpad.c: (pre_activate), (post_activate),
(gst_pad_activate_pull), (gst_pad_activate_push):
Cleanup activation code. Reset old state if
activation failed.
2005-10-12 Wim Taymans <wim@fluendo.com>
* gst/base/gstbasesink.c: (gst_base_sink_handle_object),

73
gst/gstpad.c
View file

@ -531,12 +531,16 @@ pre_activate (GstPad * pad, GstActivateMode new_mode)
case GST_ACTIVATE_PUSH:
case GST_ACTIVATE_PULL:
GST_LOCK (pad);
GST_DEBUG_OBJECT (pad, "setting ACTIVATE_MODE %d, unset flushing",
new_mode);
GST_PAD_UNSET_FLUSHING (pad);
GST_PAD_ACTIVATE_MODE (pad) = new_mode;
GST_UNLOCK (pad);
break;
case GST_ACTIVATE_NONE:
GST_LOCK (pad);
GST_DEBUG_OBJECT (pad, "setting ACTIVATE_MODE NONE, set flushing",
new_mode);
GST_PAD_SET_FLUSHING (pad);
/* unlock blocked pads so element can resume and stop */
GST_PAD_BLOCK_SIGNAL (pad);
@ -558,6 +562,7 @@ post_activate (GstPad * pad, GstActivateMode new_mode)
GST_STREAM_LOCK (pad);
/* while we're at it set activation mode */
GST_LOCK (pad);
GST_DEBUG_OBJECT (pad, "setting ACTIVATE_MODE %d", new_mode);
GST_PAD_ACTIVATE_MODE (pad) = new_mode;
GST_UNLOCK (pad);
GST_STREAM_UNLOCK (pad);
@ -653,6 +658,7 @@ gboolean
gst_pad_activate_pull (GstPad * pad, gboolean active)
{
GstActivateMode old, new;
GstPad *peer;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
@ -671,17 +677,10 @@ gst_pad_activate_pull (GstPad * pad, gboolean active)
}
if (gst_pad_get_direction (pad) == GST_PAD_SINK) {
GstPad *peer = gst_pad_get_peer (pad);
if (peer) {
if (!gst_pad_activate_pull (peer, active)) {
GST_LOCK (peer);
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad,
"activate_pull on peer (%s:%s) failed", GST_DEBUG_PAD_NAME (peer));
GST_UNLOCK (peer);
gst_object_unref (peer);
goto failure;
}
if ((peer = gst_pad_get_peer (pad))) {
if (!gst_pad_activate_pull (peer, active))
goto peer_failed;
gst_object_unref (peer);
}
}
@ -689,36 +688,39 @@ gst_pad_activate_pull (GstPad * pad, gboolean active)
pre_activate (pad, new);
if (GST_PAD_ACTIVATEPULLFUNC (pad)) {
if (GST_PAD_ACTIVATEPULLFUNC (pad) (pad, active)) {
goto success;
} else {
if (!GST_PAD_ACTIVATEPULLFUNC (pad) (pad, active))
goto failure;
}
} else {
/* can happen for sinks of passthrough elements */
goto success;
}
post_activate (pad, new);
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "%s in pull mode",
active ? "activated" : "deactivated");
return TRUE;
was_ok:
{
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "already %s in pull mode",
active ? "activated" : "deactivated");
return TRUE;
}
success:
peer_failed:
{
post_activate (pad, new);
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "%s in pull mode",
active ? "activated" : "deactivated");
return TRUE;
GST_LOCK (peer);
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad,
"activate_pull on peer (%s:%s) failed", GST_DEBUG_PAD_NAME (peer));
GST_UNLOCK (peer);
gst_object_unref (peer);
return FALSE;
}
failure:
{
GST_CAT_INFO_OBJECT (GST_CAT_PADS, pad, "failed to %s in pull mode",
active ? "activate" : "deactivate");
pre_activate (pad, GST_ACTIVATE_NONE);
post_activate (pad, GST_ACTIVATE_NONE);
return FALSE;
}
}
@ -764,36 +766,31 @@ gst_pad_activate_push (GstPad * pad, gboolean active)
pre_activate (pad, new);
if (GST_PAD_ACTIVATEPUSHFUNC (pad)) {
if (GST_PAD_ACTIVATEPUSHFUNC (pad) (pad, active)) {
goto success;
} else {
if (!GST_PAD_ACTIVATEPUSHFUNC (pad) (pad, active)) {
goto failure;
}
} else {
/* quite ok, element relies on state change func to prepare itself */
goto success;
}
post_activate (pad, new);
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "%s in push mode",
active ? "activated" : "deactivated");
return TRUE;
was_ok:
{
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "already %s in push mode",
active ? "activated" : "deactivated");
return TRUE;
}
success:
{
post_activate (pad, new);
GST_CAT_DEBUG_OBJECT (GST_CAT_PADS, pad, "%s in push mode",
active ? "activated" : "deactivated");
return TRUE;
}
failure:
{
GST_CAT_INFO_OBJECT (GST_CAT_PADS, pad, "failed to %s in push mode",
active ? "activate" : "deactivate");
pre_activate (pad, GST_ACTIVATE_NONE);
post_activate (pad, GST_ACTIVATE_NONE);
return FALSE;
}
}