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playback: Update factories list on every access if the registry has changed

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This makes application's simpler because the element doesn't need to
go to NULL first to make use of newly installed plugins.

Fixes bug #601480.
This commit is contained in:
Sebastian Dröge 2009-11-11 14:00:26 +01:00
parent ab96265c57
commit 1da5a3f7d3
3 changed files with 82 additions and 43 deletions
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45
gst/playback/gstdecodebin2.c
View file

@ -149,6 +149,7 @@ struct _GstDecodeBin
GstDecodeChain *decode_chain; /* Top level decode chain */
gint nbpads; /* unique identifier for source pads */
GMutex *factories_lock;
guint32 factories_cookie; /* Cookie from last time when factories was updated */
GValueArray *factories; /* factories we can use for selecting elements */
@ -840,14 +841,26 @@ gst_decode_bin_class_init (GstDecodeBinClass * klass)
GST_DEBUG_FUNCPTR (gst_decode_bin_change_state);
}
/* Must be called with factories lock! */
static void
gst_decode_bin_update_factories_list (GstDecodeBin * dbin)
{
if (!dbin->factories
|| dbin->factories_cookie !=
gst_default_registry_get_feature_list_cookie ()) {
if (dbin->factories)
g_value_array_free (dbin->factories);
dbin->factories = gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
dbin->factories_cookie = gst_default_registry_get_feature_list_cookie ();
}
}
static void
gst_decode_bin_init (GstDecodeBin * decode_bin)
{
/* first filter out the interesting element factories */
decode_bin->factories =
gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
decode_bin->factories_cookie =
gst_default_registry_get_feature_list_cookie ();
decode_bin->factories_lock = g_mutex_new ();
gst_decode_bin_update_factories_list (decode_bin);
/* we create the typefind element only once */
decode_bin->typefind = gst_element_factory_make ("typefind", "typefind");
@ -951,6 +964,11 @@ gst_decode_bin_finalize (GObject * object)
decode_bin->subtitle_lock = NULL;
}
if (decode_bin->factories_lock) {
g_mutex_free (decode_bin->factories_lock);
decode_bin->factories_lock = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -1155,12 +1173,15 @@ gst_decode_bin_autoplug_factories (GstElement * element, GstPad * pad,
GstCaps * caps)
{
GValueArray *result;
GstDecodeBin *dbin = GST_DECODE_BIN_CAST (element);
GST_DEBUG_OBJECT (element, "finding factories");
/* return all compatible factories for caps */
result =
gst_factory_list_filter (GST_DECODE_BIN_CAST (element)->factories, caps);
g_mutex_lock (dbin->factories_lock);
gst_decode_bin_update_factories_list (dbin);
result = gst_factory_list_filter (dbin->factories, caps);
g_mutex_unlock (dbin->factories_lock);
GST_DEBUG_OBJECT (element, "autoplug-factories returns %p", result);
@ -3232,15 +3253,9 @@ gst_decode_bin_change_state (GstElement * element, GstStateChange transition)
case GST_STATE_CHANGE_NULL_TO_READY:
if (dbin->typefind == NULL)
goto missing_typefind;
if (dbin->factories_cookie !=
gst_default_registry_get_feature_list_cookie ()) {
if (dbin->factories)
g_value_array_free (dbin->factories);
dbin->factories =
gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
dbin->factories_cookie =
gst_default_registry_get_feature_list_cookie ();
}
g_mutex_lock (dbin->factories_lock);
gst_decode_bin_update_factories_list (dbin);
g_mutex_unlock (dbin->factories_lock);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
DYN_LOCK (dbin);

40
gst/playback/gstplaybin2.c
View file

@ -373,6 +373,7 @@ struct _GstPlayBin
/* if we are shutting down or not */
gint shutdown;
GMutex *elements_lock;
guint32 elements_cookie;
GValueArray *elements; /* factories we can use for selecting elements */
@ -1103,11 +1104,25 @@ notify_mute_cb (GObject * selector, GParamSpec * pspec, GstPlayBin * playbin)
g_object_notify (G_OBJECT (playbin), "mute");
}
/* Must be called with elements lock! */
static void
gst_play_bin_update_elements_list (GstPlayBin * playbin)
{
if (!playbin->elements ||
playbin->elements_cookie !=
gst_default_registry_get_feature_list_cookie ()) {
if (playbin->elements)
g_value_array_free (playbin->elements);
playbin->elements =
gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER |
GST_FACTORY_LIST_SINK);
playbin->elements_cookie = gst_default_registry_get_feature_list_cookie ();
}
}
static void
gst_play_bin_init (GstPlayBin * playbin)
{
GstFactoryListType type;
playbin->lock = g_mutex_new ();
playbin->dyn_lock = g_mutex_new ();
@ -1121,9 +1136,8 @@ gst_play_bin_init (GstPlayBin * playbin)
init_group (playbin, &playbin->groups[1]);
/* first filter out the interesting element factories */
type = GST_FACTORY_LIST_DECODER | GST_FACTORY_LIST_SINK;
playbin->elements = gst_factory_list_get_elements (type);
playbin->elements_cookie = gst_default_registry_get_feature_list_cookie ();
playbin->elements_lock = g_mutex_new ();
gst_play_bin_update_elements_list (playbin);
gst_factory_list_debug (playbin->elements);
/* add sink */
@ -1171,6 +1185,7 @@ gst_play_bin_finalize (GObject * object)
g_free (playbin->encoding);
g_mutex_free (playbin->lock);
g_mutex_free (playbin->dyn_lock);
g_mutex_free (playbin->elements_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -2467,7 +2482,10 @@ autoplug_factories_cb (GstElement * decodebin, GstPad * pad,
group, GST_DEBUG_PAD_NAME (pad), caps);
/* filter out the elements based on the caps. */
g_mutex_lock (playbin->elements_lock);
gst_play_bin_update_elements_list (playbin);
result = gst_factory_list_filter (playbin->elements, caps);
g_mutex_unlock (playbin->elements_lock);
GST_DEBUG_OBJECT (playbin, "found factories %p", result);
gst_factory_list_debug (result);
@ -2965,15 +2983,9 @@ gst_play_bin_change_state (GstElement * element, GstStateChange transition)
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (playbin->elements_cookie !=
gst_default_registry_get_feature_list_cookie ()) {
if (playbin->elements)
g_value_array_free (playbin->elements);
playbin->elements =
gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
playbin->elements_cookie =
gst_default_registry_get_feature_list_cookie ();
}
g_mutex_lock (playbin->elements_lock);
gst_play_bin_update_elements_list (playbin);
g_mutex_unlock (playbin->elements_lock);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_LOG_OBJECT (playbin, "clearing shutdown flag");

40
gst/playback/gsturidecodebin.c
View file

@ -68,6 +68,7 @@ struct _GstURIDecodeBin
GMutex *lock; /* lock for constructing */
GMutex *factories_lock;
guint32 factories_cookie;
GValueArray *factories; /* factories we can use for selecting elements */
@ -250,18 +251,34 @@ gst_uri_decode_bin_autoplug_continue (GstElement * element, GstPad * pad,
return TRUE;
}
/* Must be called with factories lock! */
static void
gst_uri_decode_bin_update_factories_list (GstURIDecodeBin * dec)
{
if (!dec->factories ||
dec->factories_cookie !=
gst_default_registry_get_feature_list_cookie ()) {
if (dec->factories)
g_value_array_free (dec->factories);
dec->factories = gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
dec->factories_cookie = gst_default_registry_get_feature_list_cookie ();
}
}
static GValueArray *
gst_uri_decode_bin_autoplug_factories (GstElement * element, GstPad * pad,
GstCaps * caps)
{
GValueArray *result;
GstURIDecodeBin *dec = GST_URI_DECODE_BIN_CAST (element);
GST_DEBUG_OBJECT (element, "finding factories");
/* return all compatible factories for caps */
result =
gst_factory_list_filter (GST_URI_DECODE_BIN_CAST (element)->factories,
caps);
g_mutex_lock (dec->factories_lock);
gst_uri_decode_bin_update_factories_list (dec);
result = gst_factory_list_filter (dec->factories, caps);
g_mutex_unlock (dec->factories_lock);
GST_DEBUG_OBJECT (element, "autoplug-factories returns %p", result);
@ -471,8 +488,8 @@ static void
gst_uri_decode_bin_init (GstURIDecodeBin * dec, GstURIDecodeBinClass * klass)
{
/* first filter out the interesting element factories */
dec->factories = gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
dec->factories_cookie = gst_default_registry_get_feature_list_cookie ();
dec->factories_lock = g_mutex_new ();
gst_uri_decode_bin_update_factories_list (dec);
dec->lock = g_mutex_new ();
@ -494,6 +511,7 @@ gst_uri_decode_bin_finalize (GObject * obj)
remove_decoders (dec, TRUE);
g_mutex_free (dec->lock);
g_mutex_free (dec->factories_lock);
g_free (dec->uri);
g_free (dec->encoding);
if (dec->factories)
@ -2043,15 +2061,9 @@ gst_uri_decode_bin_change_state (GstElement * element,
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (decoder->factories_cookie !=
gst_default_registry_get_feature_list_cookie ()) {
if (decoder->factories)
g_value_array_free (decoder->factories);
decoder->factories =
gst_factory_list_get_elements (GST_FACTORY_LIST_DECODER);
decoder->factories_cookie =
gst_default_registry_get_feature_list_cookie ();
}
g_mutex_lock (decoder->factories_lock);
gst_uri_decode_bin_update_factories_list (decoder);
g_mutex_unlock (decoder->factories_lock);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!setup_source (decoder))