2005-04-23 David Schleef <ds@schleef.org>
+ * gst/elements/Makefile.am:
+ * gst/elements/gstcapsfilter.c: New element that acts like an
+ identity, but filters caps. Will eventually replace filtered
+ caps in pad linking.
+ * gst/gstutils.c: (gst_element_create_all_pads): New function
+ to create all the ALWAYS pads that are registered with an
+ element class. This functionality should eventually be
+ merged in with GstElement initialization.
+ * gst/gstutils.h:
+ * testsuite/trigger/README: part of trigger test code that should
+ have been checked in a long time ago.
+
+2005-04-23 David Schleef <ds@schleef.org>
+
* gst/Makefile.am: Remove as-libtool stuff. It's likely not
needed with new versions of libtool (nobody will confirm this),
and hard to carry around.
libgstelements_la_DEPENDENCIES = ../libgstreamer-@GST_MAJORMINOR@.la
libgstelements_la_SOURCES = \
gstbufferstore.c \
+ gstcapsfilter.c \
gstfakesrc.c \
gstfakesink.c \
gstfilesrc.c \
# these files above, then this will be unnecessary
EXTRA_DIST = \
gstaggregator.c \
+ gstcapsfilter.c \
gstfilesink.c \
gstfdsink.c \
gstfdsrc.c \
--- /dev/null
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wtay@chello.be>
+ * 2005 Wim Taymans <wim@fluendo.com>
+ * 2005 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#include <stdlib.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "../gst-i18n-lib.h"
+#include <gst/gstmarshal.h>
+#include <gst/gst.h>
+
+
+#define GST_TYPE_CAPSFILTER \
+ (gst_capsfilter_get_type())
+#define GST_CAPSFILTER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAPSFILTER,GstCapsFilter))
+#define GST_CAPSFILTER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAPSFILTER,GstCapsFilterClass))
+#define GST_IS_CAPSFILTER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAPSFILTER))
+#define GST_IS_CAPSFILTER_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAPSFILTER))
+
+typedef struct _GstCapsFilter GstCapsFilter;
+typedef struct _GstCapsFilterClass GstCapsFilterClass;
+
+struct _GstCapsFilter
+{
+ GstElement element;
+
+ GstPad *srcpad;
+ GstPad *sinkpad;
+
+ GstCaps *filter_caps;
+};
+
+struct _GstCapsFilterClass
+{
+ GstElementClass element_class;
+
+};
+
+GType gst_capsfilter_get_type (void);
+
+
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+GST_DEBUG_CATEGORY_STATIC (gst_capsfilter_debug);
+#define GST_CAT_DEFAULT gst_capsfilter_debug
+
+GstElementDetails gst_capsfilter_details = GST_ELEMENT_DETAILS ("CapsFilter",
+ "Generic",
+ "Pass data without modification, limiting formats",
+ "David Schleef <ds@schleef.org>");
+
+enum
+{
+ PROP_0,
+ PROP_FILTER_CAPS
+};
+
+
+#define _do_init(bla) \
+ GST_DEBUG_CATEGORY_INIT (gst_capsfilter_debug, "capsfilter", 0, "capsfilter element");
+
+GST_BOILERPLATE_FULL (GstCapsFilter, gst_capsfilter, GstElement,
+ GST_TYPE_ELEMENT, _do_init);
+
+static void gst_capsfilter_finalize (GObject * object);
+static void gst_capsfilter_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_capsfilter_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static GstCaps *gst_capsfilter_getcaps (GstPad * pad);
+static GstFlowReturn gst_capsfilter_chain (GstPad * pad, GstBuffer * buf);
+
+static void
+gst_capsfilter_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&srctemplate));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&sinktemplate));
+ gst_element_class_set_details (gstelement_class, &gst_capsfilter_details);
+}
+
+static void
+gst_capsfilter_finalize (GObject * object)
+{
+ GstCapsFilter *capsfilter;
+
+ capsfilter = GST_CAPSFILTER (object);
+
+ gst_caps_unref (capsfilter->filter_caps);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_capsfilter_class_init (GstCapsFilterClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_capsfilter_set_property);
+ gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_capsfilter_get_property);
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_capsfilter_finalize);
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILTER_CAPS,
+ g_param_spec_boxed ("filter_caps", _("Filter caps"),
+ _("Caps to use to filter the possible allowed formats"),
+ GST_TYPE_CAPS, G_PARAM_READWRITE));
+}
+
+static void
+gst_capsfilter_init (GstCapsFilter * capsfilter)
+{
+ gst_element_create_all_pads (GST_ELEMENT (capsfilter));
+
+ capsfilter->srcpad = gst_element_get_pad (GST_ELEMENT (capsfilter), "src");
+ capsfilter->sinkpad = gst_element_get_pad (GST_ELEMENT (capsfilter), "sink");
+
+ gst_pad_set_getcaps_function (capsfilter->srcpad, gst_capsfilter_getcaps);
+
+ gst_pad_set_getcaps_function (capsfilter->sinkpad, gst_capsfilter_getcaps);
+ gst_pad_set_chain_function (capsfilter->sinkpad, gst_capsfilter_chain);
+
+ capsfilter->filter_caps = gst_caps_new_any ();
+}
+
+static GstCaps *
+gst_capsfilter_getcaps (GstPad * pad)
+{
+ GstPad *otherpad;
+ GstCapsFilter *capsfilter = GST_CAPSFILTER (GST_OBJECT_PARENT (pad));
+ GstCaps *caps;
+ GstCaps *icaps;
+
+ otherpad = (pad == capsfilter->srcpad) ? capsfilter->sinkpad :
+ capsfilter->srcpad;
+
+ caps = gst_pad_peer_get_caps (otherpad);
+ icaps = gst_caps_intersect (caps, capsfilter->filter_caps);
+ gst_caps_unref (caps);
+
+ return icaps;
+}
+
+static GstFlowReturn
+gst_capsfilter_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstCapsFilter *capsfilter = GST_CAPSFILTER (GST_PAD_PARENT (pad));
+
+ gst_pad_push (capsfilter->srcpad, buf);
+
+ return GST_FLOW_OK;
+}
+
+static void
+gst_capsfilter_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstCapsFilter *capsfilter;
+
+ capsfilter = GST_CAPSFILTER (object);
+
+ switch (prop_id) {
+ case PROP_FILTER_CAPS:
+ capsfilter->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_capsfilter_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstCapsFilter *capsfilter;
+
+ capsfilter = GST_CAPSFILTER (object);
+
+ switch (prop_id) {
+ case PROP_FILTER_CAPS:
+ gst_value_set_caps (value, capsfilter->filter_caps);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
}
/**
+ * gst_element_create_all_pads:
+ * @element: a #GstElement to create pads for
+ *
+ * Creates a pad for each pad template that is always available.
+ * This function is only useful during object intialization of
+ * subclasses of #GstElement.
+ */
+void
+gst_element_create_all_pads (GstElement * element)
+{
+ GList *padlist;
+
+ /* FIXME: lock element */
+
+ padlist =
+ gst_element_class_get_pad_template_list (GST_ELEMENT_CLASS
+ (G_OBJECT_GET_CLASS (element)));
+
+ while (padlist) {
+ GstPadTemplate *padtempl = (GstPadTemplate *) padlist->data;
+
+ if (padtempl->presence == GST_PAD_ALWAYS) {
+ GstPad *pad;
+
+ pad = gst_pad_new_from_template (padtempl, padtempl->name_template);
+
+ gst_element_add_pad (element, pad);
+ }
+ }
+}
+
+/**
* gst_element_get_compatible_pad_template:
* @element: a #GstElement to get a compatible pad template for.
* @compattempl: the #GstPadTemplate to find a compatible template for.
GstFlowReturn gst_element_abort_preroll (GstElement *element);
GstFlowReturn gst_element_finish_preroll (GstElement *element, GstPad *pad);
+void gst_element_create_all_pads (GstElement *element);
GstPad* gst_element_get_compatible_pad (GstElement *element, GstPad *pad);
GstPad* gst_element_get_compatible_pad_filtered (GstElement *element, GstPad *pad,
const GstCaps *filtercaps);
libgstelements_la_DEPENDENCIES = ../libgstreamer-@GST_MAJORMINOR@.la
libgstelements_la_SOURCES = \
gstbufferstore.c \
+ gstcapsfilter.c \
gstfakesrc.c \
gstfakesink.c \
gstfilesrc.c \
# these files above, then this will be unnecessary
EXTRA_DIST = \
gstaggregator.c \
+ gstcapsfilter.c \
gstfilesink.c \
gstfdsink.c \
gstfdsrc.c \
--- /dev/null
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wtay@chello.be>
+ * 2005 Wim Taymans <wim@fluendo.com>
+ * 2005 David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#include <stdlib.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "../gst-i18n-lib.h"
+#include <gst/gstmarshal.h>
+#include <gst/gst.h>
+
+
+#define GST_TYPE_CAPSFILTER \
+ (gst_capsfilter_get_type())
+#define GST_CAPSFILTER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAPSFILTER,GstCapsFilter))
+#define GST_CAPSFILTER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAPSFILTER,GstCapsFilterClass))
+#define GST_IS_CAPSFILTER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAPSFILTER))
+#define GST_IS_CAPSFILTER_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAPSFILTER))
+
+typedef struct _GstCapsFilter GstCapsFilter;
+typedef struct _GstCapsFilterClass GstCapsFilterClass;
+
+struct _GstCapsFilter
+{
+ GstElement element;
+
+ GstPad *srcpad;
+ GstPad *sinkpad;
+
+ GstCaps *filter_caps;
+};
+
+struct _GstCapsFilterClass
+{
+ GstElementClass element_class;
+
+};
+
+GType gst_capsfilter_get_type (void);
+
+
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+GST_DEBUG_CATEGORY_STATIC (gst_capsfilter_debug);
+#define GST_CAT_DEFAULT gst_capsfilter_debug
+
+GstElementDetails gst_capsfilter_details = GST_ELEMENT_DETAILS ("CapsFilter",
+ "Generic",
+ "Pass data without modification, limiting formats",
+ "David Schleef <ds@schleef.org>");
+
+enum
+{
+ PROP_0,
+ PROP_FILTER_CAPS
+};
+
+
+#define _do_init(bla) \
+ GST_DEBUG_CATEGORY_INIT (gst_capsfilter_debug, "capsfilter", 0, "capsfilter element");
+
+GST_BOILERPLATE_FULL (GstCapsFilter, gst_capsfilter, GstElement,
+ GST_TYPE_ELEMENT, _do_init);
+
+static void gst_capsfilter_finalize (GObject * object);
+static void gst_capsfilter_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_capsfilter_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static GstCaps *gst_capsfilter_getcaps (GstPad * pad);
+static GstFlowReturn gst_capsfilter_chain (GstPad * pad, GstBuffer * buf);
+
+static void
+gst_capsfilter_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&srctemplate));
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&sinktemplate));
+ gst_element_class_set_details (gstelement_class, &gst_capsfilter_details);
+}
+
+static void
+gst_capsfilter_finalize (GObject * object)
+{
+ GstCapsFilter *capsfilter;
+
+ capsfilter = GST_CAPSFILTER (object);
+
+ gst_caps_unref (capsfilter->filter_caps);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gst_capsfilter_class_init (GstCapsFilterClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_capsfilter_set_property);
+ gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_capsfilter_get_property);
+ gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_capsfilter_finalize);
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILTER_CAPS,
+ g_param_spec_boxed ("filter_caps", _("Filter caps"),
+ _("Caps to use to filter the possible allowed formats"),
+ GST_TYPE_CAPS, G_PARAM_READWRITE));
+}
+
+static void
+gst_capsfilter_init (GstCapsFilter * capsfilter)
+{
+ gst_element_create_all_pads (GST_ELEMENT (capsfilter));
+
+ capsfilter->srcpad = gst_element_get_pad (GST_ELEMENT (capsfilter), "src");
+ capsfilter->sinkpad = gst_element_get_pad (GST_ELEMENT (capsfilter), "sink");
+
+ gst_pad_set_getcaps_function (capsfilter->srcpad, gst_capsfilter_getcaps);
+
+ gst_pad_set_getcaps_function (capsfilter->sinkpad, gst_capsfilter_getcaps);
+ gst_pad_set_chain_function (capsfilter->sinkpad, gst_capsfilter_chain);
+
+ capsfilter->filter_caps = gst_caps_new_any ();
+}
+
+static GstCaps *
+gst_capsfilter_getcaps (GstPad * pad)
+{
+ GstPad *otherpad;
+ GstCapsFilter *capsfilter = GST_CAPSFILTER (GST_OBJECT_PARENT (pad));
+ GstCaps *caps;
+ GstCaps *icaps;
+
+ otherpad = (pad == capsfilter->srcpad) ? capsfilter->sinkpad :
+ capsfilter->srcpad;
+
+ caps = gst_pad_peer_get_caps (otherpad);
+ icaps = gst_caps_intersect (caps, capsfilter->filter_caps);
+ gst_caps_unref (caps);
+
+ return icaps;
+}
+
+static GstFlowReturn
+gst_capsfilter_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstCapsFilter *capsfilter = GST_CAPSFILTER (GST_PAD_PARENT (pad));
+
+ gst_pad_push (capsfilter->srcpad, buf);
+
+ return GST_FLOW_OK;
+}
+
+static void
+gst_capsfilter_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstCapsFilter *capsfilter;
+
+ capsfilter = GST_CAPSFILTER (object);
+
+ switch (prop_id) {
+ case PROP_FILTER_CAPS:
+ capsfilter->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_capsfilter_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstCapsFilter *capsfilter;
+
+ capsfilter = GST_CAPSFILTER (object);
+
+ switch (prop_id) {
+ case PROP_FILTER_CAPS:
+ gst_value_set_caps (value, capsfilter->filter_caps);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
--- /dev/null
+
+
+caps issues:
+
+ - We can't really tell until PAUSED that 'sinesrc ! identity ! ximagesink'
+ will fail (since identity has ANY as the pad template caps).
+ Because of this, it's nearly useless to perform the pad
+ template check.
+
+ Alternatives:
+
+ proxy pad template caps, but that reinstates the O(N^2) issue
+ in 0.8 during linking lots of elements.
+
+ remove checking of pad template caps compatibility
+
+ add a means of checking a pipeline for caps compatibility before
+ setting to PAUSED (ugly, requires special processing in each
+ element)
+
+
+
+
+
--- /dev/null
+
+
+caps issues:
+
+ - We can't really tell until PAUSED that 'sinesrc ! identity ! ximagesink'
+ will fail (since identity has ANY as the pad template caps).
+ Because of this, it's nearly useless to perform the pad
+ template check.
+
+ Alternatives:
+
+ proxy pad template caps, but that reinstates the O(N^2) issue
+ in 0.8 during linking lots of elements.
+
+ remove checking of pad template caps compatibility
+
+ add a means of checking a pipeline for caps compatibility before
+ setting to PAUSED (ugly, requires special processing in each
+ element)
+
+
+
+
+
projects / platform / upstream / gstreamer.git / commitdiff