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gst/autodetect/gstautovideosink.*: Fix docs.
Original commit message from CVS: * gst/autodetect/gstautovideosink.c: (gst_auto_video_sink_class_init), (gst_auto_video_sink_dispose), (gst_auto_video_sink_init), (gst_auto_video_sink_create_element_with_pretty_name), (gst_auto_video_sink_find_best), (gst_auto_video_sink_set_property), (gst_auto_video_sink_get_property): * gst/autodetect/gstautovideosink.h: Fix docs. Use same error reporting code as autoaudiosink. Add property to filter sinks based on caps. Only select raw video sinks by default for backwards compat. API: GstAutoVideoSink::filter-caps
This commit is contained in:
Wim Taymans
parent
619ee506cf
commit
dc9c3f540c
16
ChangeLog
16
ChangeLog
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@ -1,3 +1,19 @@
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2007-12-05 Wim Taymans <wim.taymans@gmail.com>
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* gst/autodetect/gstautovideosink.c:
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(gst_auto_video_sink_class_init), (gst_auto_video_sink_dispose),
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(gst_auto_video_sink_init),
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(gst_auto_video_sink_create_element_with_pretty_name),
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(gst_auto_video_sink_find_best),
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(gst_auto_video_sink_set_property),
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(gst_auto_video_sink_get_property):
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* gst/autodetect/gstautovideosink.h:
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Fix docs.
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Use same error reporting code as autoaudiosink.
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Add property to filter sinks based on caps. Only select raw video sinks
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by default for backwards compat.
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API: GstAutoVideoSink::filter-caps
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2007-12-05 Wim Taymans <wim.taymans@gmail.com>
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Patch by: Tommi Myöhänen <ext-tommi dot myohanen at nokia dot com>
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@ -26,7 +26,7 @@
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* <para>
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* autovideosink is a video sink that automatically detects an appropriate
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* video sink to use. It does so by scanning the registry for all elements
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* that have <quote>Sink</quote> and <quote>Audio</quote> in the class field
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* that have <quote>Sink</quote> and <quote>Video</quote> in the class field
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* of their element information, and also have a non-zero autoplugging rank.
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* </para>
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* <title>Example launch line</title>
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@ -47,12 +47,24 @@
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#include "gstautovideosink.h"
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#include "gstautodetect.h"
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/* Properties */
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enum
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{
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PROP_0,
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PROP_CAPS,
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};
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static GstStateChangeReturn
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gst_auto_video_sink_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_auto_video_sink_dispose (GstAutoVideoSink * sink);
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static void gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink);
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static void gst_auto_video_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_auto_video_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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GST_BOILERPLATE (GstAutoVideoSink, gst_auto_video_sink, GstBin, GST_TYPE_BIN);
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static const GstElementDetails gst_auto_video_sink_details =
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@ -87,6 +99,26 @@ gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass)
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gobject_class->dispose =
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(GObjectFinalizeFunc) GST_DEBUG_FUNCPTR (gst_auto_video_sink_dispose);
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eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_sink_change_state);
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gobject_class->set_property =
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GST_DEBUG_FUNCPTR (gst_auto_video_sink_set_property);
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gobject_class->get_property =
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GST_DEBUG_FUNCPTR (gst_auto_video_sink_get_property);
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/**
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* GstAutoVideoSink:filter-caps
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*
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* This property will filter out candidate sinks that can handle the specified
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* caps. By default only video sinks that support raw rgb and yuv video
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* are selected.
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*
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* This property can only be set before the element goes to the READY state.
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*
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* Since: 0.10.7
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**/
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g_object_class_install_property (gobject_class, PROP_CAPS,
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g_param_spec_boxed ("filter-caps", "Filter caps",
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"Filter sink candidates using these caps.", GST_TYPE_CAPS,
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G_PARAM_READWRITE));
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}
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static void
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@ -94,6 +126,10 @@ gst_auto_video_sink_dispose (GstAutoVideoSink * sink)
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{
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gst_auto_video_sink_clear_kid (sink);
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if (sink->filter_caps)
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gst_caps_unref (sink->filter_caps);
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sink->filter_caps = NULL;
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G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
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}
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@ -130,6 +166,9 @@ gst_auto_video_sink_reset (GstAutoVideoSink * sink)
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gst_object_unref (targetpad);
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}
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static GstStaticCaps raw_caps =
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GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb");
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static void
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gst_auto_video_sink_init (GstAutoVideoSink * sink,
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GstAutoVideoSinkClass * g_class)
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@ -139,6 +178,10 @@ gst_auto_video_sink_init (GstAutoVideoSink * sink,
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gst_auto_video_sink_reset (sink);
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/* set the default raw video caps */
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sink->filter_caps = gst_static_caps_get (&raw_caps);
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/* mark as sink */
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GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_IS_SINK);
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}
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@ -177,48 +220,118 @@ gst_auto_video_sink_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
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gst_plugin_feature_get_name (f1));
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}
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static GstElement *
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gst_auto_video_sink_create_element_with_pretty_name (GstAutoVideoSink * sink,
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GstElementFactory * factory)
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{
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GstElement *element;
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gchar *name, *marker;
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marker = g_strdup (GST_PLUGIN_FEATURE (factory)->name);
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if (g_str_has_suffix (marker, "sink"))
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marker[strlen (marker) - 4] = '\0';
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if (g_str_has_prefix (marker, "gst"))
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g_memmove (marker, marker + 3, strlen (marker + 3) + 1);
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name = g_strdup_printf ("%s-actual-sink-%s", GST_OBJECT_NAME (sink), marker);
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g_free (marker);
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element = gst_element_factory_create (factory, name);
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g_free (name);
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return element;
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}
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static GstElement *
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gst_auto_video_sink_find_best (GstAutoVideoSink * sink)
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{
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GList *list, *item;
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GstElement *choice = NULL;
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GList *list, *walk;
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gchar *child_name = g_strdup_printf ("%s-actual-sink",
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GST_OBJECT_NAME (sink));
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GstMessage *message = NULL;
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GSList *errors = NULL;
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GstBus *bus = gst_bus_new ();
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GstPad *el_pad = NULL;
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GstCaps *el_caps = NULL, *intersect = NULL;
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gboolean no_match = TRUE;
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list = gst_registry_feature_filter (gst_registry_get_default (),
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(GstPluginFeatureFilter) gst_auto_video_sink_factory_filter, FALSE, sink);
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list = g_list_sort (list, (GCompareFunc) gst_auto_video_sink_compare_ranks);
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for (walk = list; walk != NULL; walk = walk->next) {
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GstElementFactory *f = GST_ELEMENT_FACTORY (walk->data);
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GST_LOG_OBJECT (sink, "Trying to find usable video devices ...");
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for (item = list; item != NULL; item = item->next) {
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GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
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GstElement *el;
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GST_DEBUG_OBJECT (sink, "Trying %s", GST_PLUGIN_FEATURE (f)->name);
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if ((el = gst_element_factory_create (f, child_name))) {
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if ((el = gst_auto_video_sink_create_element_with_pretty_name (sink, f))) {
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GstStateChangeReturn ret;
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GST_DEBUG_OBJECT (sink, "Changing state to READY");
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GST_DEBUG_OBJECT (sink, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
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ret = gst_element_set_state (el, GST_STATE_READY);
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if (ret == GST_STATE_CHANGE_SUCCESS) {
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GST_DEBUG_OBJECT (sink, "success");
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choice = el;
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goto done;
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/* If autovideosink has been provided with filter caps,
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* accept only sinks that match with the filter caps */
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if (sink->filter_caps) {
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el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "sink");
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el_caps = gst_pad_get_caps (el_pad);
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gst_object_unref (el_pad);
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GST_DEBUG_OBJECT (sink,
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"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
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sink->filter_caps, el_caps);
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intersect = gst_caps_intersect (sink->filter_caps, el_caps);
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no_match = gst_caps_is_empty (intersect);
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gst_caps_unref (el_caps);
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gst_caps_unref (intersect);
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if (no_match) {
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GST_DEBUG_OBJECT (sink, "Incompatible caps");
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gst_object_unref (el);
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continue;
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} else {
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GST_DEBUG_OBJECT (sink, "Found compatible caps");
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}
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}
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GST_WARNING_OBJECT (sink, "Couldn't set READY: %d", ret);
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ret = gst_element_set_state (el, GST_STATE_NULL);
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if (ret != GST_STATE_CHANGE_SUCCESS)
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GST_WARNING_OBJECT (sink,
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"Couldn't set element to NULL prior to disposal.");
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gst_element_set_bus (el, bus);
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ret = gst_element_set_state (el, GST_STATE_READY);
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if (ret == GST_STATE_CHANGE_SUCCESS) {
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GST_DEBUG_OBJECT (sink, "This worked!");
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choice = el;
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break;
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}
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/* collect all error messages */
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while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
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GST_DEBUG_OBJECT (sink, "error message %" GST_PTR_FORMAT, message);
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errors = g_slist_append (errors, message);
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}
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gst_element_set_state (el, GST_STATE_NULL);
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gst_object_unref (el);
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}
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}
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done:
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g_free (child_name);
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GST_DEBUG_OBJECT (sink, "done trying");
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if (!choice) {
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if (errors) {
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/* FIXME: we forward the first error for now; but later on it might make
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* sense to actually analyse them */
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gst_message_ref (GST_MESSAGE (errors->data));
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GST_DEBUG_OBJECT (sink, "reposting message %p", errors->data);
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gst_element_post_message (GST_ELEMENT (sink), GST_MESSAGE (errors->data));
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} else {
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/* send warning message to application and use a fakesink */
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GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
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("Failed to find a usable video sink"));
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choice = gst_element_factory_make ("fakesink", "fake-video-sink");
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if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
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g_object_set (choice, "sync", TRUE, NULL);
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gst_element_set_state (choice, GST_STATE_READY);
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}
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}
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gst_object_unref (bus);
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gst_plugin_feature_list_free (list);
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g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
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g_slist_free (errors);
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return choice;
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}
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@ -285,3 +398,38 @@ gst_auto_video_sink_change_state (GstElement * element,
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return ret;
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}
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static void
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gst_auto_video_sink_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
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switch (prop_id) {
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case PROP_CAPS:
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if (sink->filter_caps)
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gst_caps_unref (sink->filter_caps);
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sink->filter_caps = gst_caps_copy (gst_value_get_caps (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_auto_video_sink_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
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switch (prop_id) {
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case PROP_CAPS:{
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gst_value_set_caps (value, sink->filter_caps);
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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@ -43,6 +43,7 @@ typedef struct _GstAutoVideoSink {
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/* explicit pointers to stuff used */
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GstPad *pad;
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GstElement *kid;
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GstCaps *filter_caps;
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} GstAutoVideoSink;
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typedef struct _GstAutoVideoSinkClass {
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