mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 12:11:13 +00:00
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
3 changed files with 186 additions and 21 deletions
16
ChangeLog
16
ChangeLog
|
|
@ -1,3 +1,19 @@
|
|||
2007-12-05 Wim Taymans <wim.taymans@gmail.com>
|
||||
|
||||
* 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
|
||||
|
||||
2007-12-05 Wim Taymans <wim.taymans@gmail.com>
|
||||
|
||||
Patch by: Tommi Myöhänen <ext-tommi dot myohanen at nokia dot com>
|
||||
|
|
|
|||
|
|
@ -26,7 +26,7 @@
|
|||
* <para>
|
||||
* autovideosink is a video sink that automatically detects an appropriate
|
||||
* video sink to use. It does so by scanning the registry for all elements
|
||||
* that have <quote>Sink</quote> and <quote>Audio</quote> in the class field
|
||||
* that have <quote>Sink</quote> and <quote>Video</quote> in the class field
|
||||
* of their element information, and also have a non-zero autoplugging rank.
|
||||
* </para>
|
||||
* <title>Example launch line</title>
|
||||
|
|
@ -47,12 +47,24 @@
|
|||
#include "gstautovideosink.h"
|
||||
#include "gstautodetect.h"
|
||||
|
||||
/* Properties */
|
||||
enum
|
||||
{
|
||||
PROP_0,
|
||||
PROP_CAPS,
|
||||
};
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_auto_video_sink_change_state (GstElement * element,
|
||||
GstStateChange transition);
|
||||
static void gst_auto_video_sink_dispose (GstAutoVideoSink * sink);
|
||||
static void gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink);
|
||||
|
||||
static void gst_auto_video_sink_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec);
|
||||
static void gst_auto_video_sink_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec);
|
||||
|
||||
GST_BOILERPLATE (GstAutoVideoSink, gst_auto_video_sink, GstBin, GST_TYPE_BIN);
|
||||
|
||||
static const GstElementDetails gst_auto_video_sink_details =
|
||||
|
|
@ -87,6 +99,26 @@ gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass)
|
|||
gobject_class->dispose =
|
||||
(GObjectFinalizeFunc) GST_DEBUG_FUNCPTR (gst_auto_video_sink_dispose);
|
||||
eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_sink_change_state);
|
||||
gobject_class->set_property =
|
||||
GST_DEBUG_FUNCPTR (gst_auto_video_sink_set_property);
|
||||
gobject_class->get_property =
|
||||
GST_DEBUG_FUNCPTR (gst_auto_video_sink_get_property);
|
||||
|
||||
/**
|
||||
* GstAutoVideoSink:filter-caps
|
||||
*
|
||||
* This property will filter out candidate sinks that can handle the specified
|
||||
* caps. By default only video sinks that support raw rgb and yuv video
|
||||
* are selected.
|
||||
*
|
||||
* This property can only be set before the element goes to the READY state.
|
||||
*
|
||||
* Since: 0.10.7
|
||||
**/
|
||||
g_object_class_install_property (gobject_class, PROP_CAPS,
|
||||
g_param_spec_boxed ("filter-caps", "Filter caps",
|
||||
"Filter sink candidates using these caps.", GST_TYPE_CAPS,
|
||||
G_PARAM_READWRITE));
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -94,6 +126,10 @@ gst_auto_video_sink_dispose (GstAutoVideoSink * sink)
|
|||
{
|
||||
gst_auto_video_sink_clear_kid (sink);
|
||||
|
||||
if (sink->filter_caps)
|
||||
gst_caps_unref (sink->filter_caps);
|
||||
sink->filter_caps = NULL;
|
||||
|
||||
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
|
||||
}
|
||||
|
||||
|
|
@ -130,6 +166,9 @@ gst_auto_video_sink_reset (GstAutoVideoSink * sink)
|
|||
gst_object_unref (targetpad);
|
||||
}
|
||||
|
||||
static GstStaticCaps raw_caps =
|
||||
GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb");
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_init (GstAutoVideoSink * sink,
|
||||
GstAutoVideoSinkClass * g_class)
|
||||
|
|
@ -139,6 +178,10 @@ gst_auto_video_sink_init (GstAutoVideoSink * sink,
|
|||
|
||||
gst_auto_video_sink_reset (sink);
|
||||
|
||||
/* set the default raw video caps */
|
||||
sink->filter_caps = gst_static_caps_get (&raw_caps);
|
||||
|
||||
/* mark as sink */
|
||||
GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_IS_SINK);
|
||||
}
|
||||
|
||||
|
|
@ -177,48 +220,118 @@ gst_auto_video_sink_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
|
|||
gst_plugin_feature_get_name (f1));
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_video_sink_create_element_with_pretty_name (GstAutoVideoSink * sink,
|
||||
GstElementFactory * factory)
|
||||
{
|
||||
GstElement *element;
|
||||
gchar *name, *marker;
|
||||
|
||||
marker = g_strdup (GST_PLUGIN_FEATURE (factory)->name);
|
||||
if (g_str_has_suffix (marker, "sink"))
|
||||
marker[strlen (marker) - 4] = '\0';
|
||||
if (g_str_has_prefix (marker, "gst"))
|
||||
g_memmove (marker, marker + 3, strlen (marker + 3) + 1);
|
||||
name = g_strdup_printf ("%s-actual-sink-%s", GST_OBJECT_NAME (sink), marker);
|
||||
g_free (marker);
|
||||
|
||||
element = gst_element_factory_create (factory, name);
|
||||
g_free (name);
|
||||
|
||||
return element;
|
||||
}
|
||||
|
||||
static GstElement *
|
||||
gst_auto_video_sink_find_best (GstAutoVideoSink * sink)
|
||||
{
|
||||
GList *list, *item;
|
||||
GstElement *choice = NULL;
|
||||
GList *list, *walk;
|
||||
gchar *child_name = g_strdup_printf ("%s-actual-sink",
|
||||
GST_OBJECT_NAME (sink));
|
||||
GstMessage *message = NULL;
|
||||
GSList *errors = NULL;
|
||||
GstBus *bus = gst_bus_new ();
|
||||
GstPad *el_pad = NULL;
|
||||
GstCaps *el_caps = NULL, *intersect = NULL;
|
||||
gboolean no_match = TRUE;
|
||||
|
||||
list = gst_registry_feature_filter (gst_registry_get_default (),
|
||||
(GstPluginFeatureFilter) gst_auto_video_sink_factory_filter, FALSE, sink);
|
||||
list = g_list_sort (list, (GCompareFunc) gst_auto_video_sink_compare_ranks);
|
||||
|
||||
for (walk = list; walk != NULL; walk = walk->next) {
|
||||
GstElementFactory *f = GST_ELEMENT_FACTORY (walk->data);
|
||||
GST_LOG_OBJECT (sink, "Trying to find usable video devices ...");
|
||||
|
||||
for (item = list; item != NULL; item = item->next) {
|
||||
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
|
||||
GstElement *el;
|
||||
|
||||
GST_DEBUG_OBJECT (sink, "Trying %s", GST_PLUGIN_FEATURE (f)->name);
|
||||
if ((el = gst_element_factory_create (f, child_name))) {
|
||||
if ((el = gst_auto_video_sink_create_element_with_pretty_name (sink, f))) {
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
GST_DEBUG_OBJECT (sink, "Changing state to READY");
|
||||
GST_DEBUG_OBJECT (sink, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
|
||||
|
||||
ret = gst_element_set_state (el, GST_STATE_READY);
|
||||
if (ret == GST_STATE_CHANGE_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (sink, "success");
|
||||
choice = el;
|
||||
goto done;
|
||||
/* If autovideosink has been provided with filter caps,
|
||||
* accept only sinks that match with the filter caps */
|
||||
if (sink->filter_caps) {
|
||||
el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "sink");
|
||||
el_caps = gst_pad_get_caps (el_pad);
|
||||
gst_object_unref (el_pad);
|
||||
GST_DEBUG_OBJECT (sink,
|
||||
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
|
||||
sink->filter_caps, el_caps);
|
||||
intersect = gst_caps_intersect (sink->filter_caps, el_caps);
|
||||
no_match = gst_caps_is_empty (intersect);
|
||||
gst_caps_unref (el_caps);
|
||||
gst_caps_unref (intersect);
|
||||
|
||||
if (no_match) {
|
||||
GST_DEBUG_OBJECT (sink, "Incompatible caps");
|
||||
gst_object_unref (el);
|
||||
continue;
|
||||
} else {
|
||||
GST_DEBUG_OBJECT (sink, "Found compatible caps");
|
||||
}
|
||||
}
|
||||
|
||||
GST_WARNING_OBJECT (sink, "Couldn't set READY: %d", ret);
|
||||
ret = gst_element_set_state (el, GST_STATE_NULL);
|
||||
if (ret != GST_STATE_CHANGE_SUCCESS)
|
||||
GST_WARNING_OBJECT (sink,
|
||||
"Couldn't set element to NULL prior to disposal.");
|
||||
gst_element_set_bus (el, bus);
|
||||
ret = gst_element_set_state (el, GST_STATE_READY);
|
||||
if (ret == GST_STATE_CHANGE_SUCCESS) {
|
||||
GST_DEBUG_OBJECT (sink, "This worked!");
|
||||
choice = el;
|
||||
break;
|
||||
}
|
||||
|
||||
/* collect all error messages */
|
||||
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
|
||||
GST_DEBUG_OBJECT (sink, "error message %" GST_PTR_FORMAT, message);
|
||||
errors = g_slist_append (errors, message);
|
||||
}
|
||||
|
||||
gst_element_set_state (el, GST_STATE_NULL);
|
||||
gst_object_unref (el);
|
||||
}
|
||||
}
|
||||
|
||||
done:
|
||||
g_free (child_name);
|
||||
GST_DEBUG_OBJECT (sink, "done trying");
|
||||
if (!choice) {
|
||||
if (errors) {
|
||||
/* FIXME: we forward the first error for now; but later on it might make
|
||||
* sense to actually analyse them */
|
||||
gst_message_ref (GST_MESSAGE (errors->data));
|
||||
GST_DEBUG_OBJECT (sink, "reposting message %p", errors->data);
|
||||
gst_element_post_message (GST_ELEMENT (sink), GST_MESSAGE (errors->data));
|
||||
} else {
|
||||
/* send warning message to application and use a fakesink */
|
||||
GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
|
||||
("Failed to find a usable video sink"));
|
||||
choice = gst_element_factory_make ("fakesink", "fake-video-sink");
|
||||
if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
|
||||
g_object_set (choice, "sync", TRUE, NULL);
|
||||
gst_element_set_state (choice, GST_STATE_READY);
|
||||
}
|
||||
}
|
||||
gst_object_unref (bus);
|
||||
gst_plugin_feature_list_free (list);
|
||||
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
|
||||
g_slist_free (errors);
|
||||
|
||||
return choice;
|
||||
}
|
||||
|
|
@ -285,3 +398,38 @@ gst_auto_video_sink_change_state (GstElement * element,
|
|||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_set_property (GObject * object, guint prop_id,
|
||||
const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:
|
||||
if (sink->filter_caps)
|
||||
gst_caps_unref (sink->filter_caps);
|
||||
sink->filter_caps = gst_caps_copy (gst_value_get_caps (value));
|
||||
break;
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_auto_video_sink_get_property (GObject * object, guint prop_id,
|
||||
GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
|
||||
|
||||
switch (prop_id) {
|
||||
case PROP_CAPS:{
|
||||
gst_value_set_caps (value, sink->filter_caps);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -43,6 +43,7 @@ typedef struct _GstAutoVideoSink {
|
|||
/* explicit pointers to stuff used */
|
||||
GstPad *pad;
|
||||
GstElement *kid;
|
||||
GstCaps *filter_caps;
|
||||
} GstAutoVideoSink;
|
||||
|
||||
typedef struct _GstAutoVideoSinkClass {
|
||||
|
|
|
|||
Loading…
Reference in a new issue