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authorKibum Kim <kb0929.kim@samsung.com>2012-01-07 00:46:56 +0900
committerKibum Kim <kb0929.kim@samsung.com>2012-01-07 00:46:56 +0900
commit4fcf0a9192ac1dee34309a66be632530b66f6822 (patch)
treee09f9233b63b22f97084798dcf6ffd3c85cc3adb /gst/autodetect
parentdfa84b358c7cdf0535eba1fead62fc4122cc56e6 (diff)
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Git init
Diffstat (limited to 'gst/autodetect')
-rw-r--r--gst/autodetect/Makefile.am33
-rw-r--r--gst/autodetect/Makefile.in870
-rw-r--r--gst/autodetect/gstautoaudiosink.c446
-rw-r--r--gst/autodetect/gstautoaudiosink.h57
-rw-r--r--gst/autodetect/gstautoaudiosrc.c448
-rw-r--r--gst/autodetect/gstautoaudiosrc.h58
-rw-r--r--gst/autodetect/gstautodetect.c54
-rw-r--r--gst/autodetect/gstautodetect.h26
-rw-r--r--gst/autodetect/gstautovideosink.c434
-rw-r--r--gst/autodetect/gstautovideosink.h57
-rw-r--r--gst/autodetect/gstautovideosrc.c436
-rw-r--r--gst/autodetect/gstautovideosrc.h58
12 files changed, 2977 insertions, 0 deletions
diff --git a/gst/autodetect/Makefile.am b/gst/autodetect/Makefile.am
new file mode 100644
index 0000000..5bf57c7
--- /dev/null
+++ b/gst/autodetect/Makefile.am
@@ -0,0 +1,33 @@
+plugin_LTLIBRARIES = libgstautodetect.la
+
+libgstautodetect_la_SOURCES = \
+ gstautoaudiosink.c \
+ gstautoaudiosrc.c \
+ gstautodetect.c \
+ gstautovideosink.c \
+ gstautovideosrc.c
+libgstautodetect_la_CFLAGS = $(GST_CFLAGS)
+libgstautodetect_la_LIBADD = $(GST_LIBS)
+libgstautodetect_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstautodetect_la_LIBTOOLFLAGS = --tag=disable-static
+
+noinst_HEADERS = \
+ gstautoaudiosink.h \
+ gstautoaudiosrc.h \
+ gstautodetect.h \
+ gstautovideosink.h \
+ gstautovideosrc.h
+
+Android.mk: Makefile.am $(BUILT_SOURCES)
+ androgenizer \
+ -:PROJECT libgstautodetect -:SHARED libgstautodetect \
+ -:TAGS eng debug \
+ -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \
+ -:SOURCES $(libgstautodetect_la_SOURCES) \
+ -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstautodetect_la_CFLAGS) \
+ -:LDFLAGS $(libgstautodetect_la_LDFLAGS) \
+ $(libgstautodetect_la_LIBADD) \
+ -ldl \
+ -:PASSTHROUGH LOCAL_ARM_MODE:=arm \
+ LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \
+ > $@
diff --git a/gst/autodetect/Makefile.in b/gst/autodetect/Makefile.in
new file mode 100644
index 0000000..34354b2
--- /dev/null
+++ b/gst/autodetect/Makefile.in
@@ -0,0 +1,870 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+ dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+ if test -d "$(distdir)/$$file"; then \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+ cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+ find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+ fi; \
+ cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+ else \
+ test -f "$(distdir)/$$file" \
+ || cp -p $$d/$$file "$(distdir)/$$file" \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(HEADERS)
+installdirs:
+ for dir in "$(DESTDIR)$(plugindir)"; do \
+ test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+ done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ `test -z '$(STRIP)' || \
+ echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-pluginLTLIBRARIES \
+ mostlyclean-am
+
+distclean: distclean-am
+ -rm -rf ./$(DEPDIR)
+ -rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+ distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-pluginLTLIBRARIES
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+ -rm -rf ./$(DEPDIR)
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-pluginLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+ clean-libtool clean-pluginLTLIBRARIES ctags distclean \
+ distclean-compile distclean-generic distclean-libtool \
+ distclean-tags distdir dvi dvi-am html html-am info info-am \
+ install install-am install-data install-data-am install-dvi \
+ install-dvi-am install-exec install-exec-am install-html \
+ install-html-am install-info install-info-am install-man \
+ install-pdf install-pdf-am install-pluginLTLIBRARIES \
+ install-ps install-ps-am install-strip installcheck \
+ installcheck-am installdirs maintainer-clean \
+ maintainer-clean-generic mostlyclean mostlyclean-compile \
+ mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+ tags uninstall uninstall-am uninstall-pluginLTLIBRARIES
+
+
+Android.mk: Makefile.am $(BUILT_SOURCES)
+ androgenizer \
+ -:PROJECT libgstautodetect -:SHARED libgstautodetect \
+ -:TAGS eng debug \
+ -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \
+ -:SOURCES $(libgstautodetect_la_SOURCES) \
+ -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstautodetect_la_CFLAGS) \
+ -:LDFLAGS $(libgstautodetect_la_LDFLAGS) \
+ $(libgstautodetect_la_LIBADD) \
+ -ldl \
+ -:PASSTHROUGH LOCAL_ARM_MODE:=arm \
+ LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \
+ > $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/gst/autodetect/gstautoaudiosink.c b/gst/autodetect/gstautoaudiosink.c
new file mode 100644
index 0000000..fae54f5
--- /dev/null
+++ b/gst/autodetect/gstautoaudiosink.c
@@ -0,0 +1,446 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * (c) 2006 Jan Schmidt <thaytan@noraisin.net>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-autoaudiosink
+ * @see_also: autovideosink, alsasink, osssink
+ *
+ * autoaudiosink is an audio sink that automatically detects an appropriate
+ * audio 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
+ * of their element information, and also have a non-zero autoplugging rank.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m audiotestsrc ! audioconvert ! audioresample ! autoaudiosink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstautoaudiosink.h"
+#include "gstautodetect.h"
+
+/* Properties */
+enum
+{
+ PROP_0,
+ PROP_CAPS,
+};
+
+static GstStateChangeReturn
+gst_auto_audio_sink_change_state (GstElement * element,
+ GstStateChange transition);
+static void gst_auto_audio_sink_dispose (GstAutoAudioSink * sink);
+static void gst_auto_audio_sink_clear_kid (GstAutoAudioSink * sink);
+static void gst_auto_audio_sink_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_auto_audio_sink_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+GST_BOILERPLATE (GstAutoAudioSink, gst_auto_audio_sink, GstBin, GST_TYPE_BIN);
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static void
+gst_auto_audio_sink_base_init (gpointer klass)
+{
+ GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (eklass,
+ gst_static_pad_template_get (&sink_template));
+
+ gst_element_class_set_details_simple (eklass, "Auto audio sink",
+ "Sink/Audio",
+ "Wrapper audio sink for automatically detected audio sink",
+ "Jan Schmidt <thaytan@noraisin.net>");
+}
+
+static void
+gst_auto_audio_sink_class_init (GstAutoAudioSinkClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *eklass;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ eklass = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_audio_sink_dispose;
+ gobject_class->set_property = gst_auto_audio_sink_set_property;
+ gobject_class->get_property = gst_auto_audio_sink_get_property;
+
+ eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_audio_sink_change_state);
+
+ /**
+ * GstAutoAudioSink:filter-caps
+ *
+ * This property will filter out candidate sinks that can handle the specified
+ * caps. By default only audio sinks that support raw floating point and
+ * integer audio 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 | G_PARAM_STATIC_STRINGS));
+}
+
+static void
+gst_auto_audio_sink_dispose (GstAutoAudioSink * sink)
+{
+ gst_auto_audio_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);
+}
+
+static void
+gst_auto_audio_sink_clear_kid (GstAutoAudioSink * sink)
+{
+ if (sink->kid) {
+ gst_element_set_state (sink->kid, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (sink), sink->kid);
+ sink->kid = NULL;
+ /* Don't lose the SINK flag */
+ GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_IS_SINK);
+ }
+}
+
+/*
+ * Hack to make initial linking work; ideally, this'd work even when
+ * no target has been assigned to the ghostpad yet.
+ */
+static void
+gst_auto_audio_sink_reset (GstAutoAudioSink * sink)
+{
+ GstPad *targetpad;
+
+ gst_auto_audio_sink_clear_kid (sink);
+
+ /* fakesink placeholder */
+ sink->kid = gst_element_factory_make ("fakesink", "tempsink");
+ gst_bin_add (GST_BIN (sink), sink->kid);
+
+ /* pad */
+ targetpad = gst_element_get_static_pad (sink->kid, "sink");
+ gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
+ gst_object_unref (targetpad);
+}
+
+static GstStaticCaps raw_caps =
+ GST_STATIC_CAPS ("audio/x-raw-int; audio/x-raw-float");
+
+static void
+gst_auto_audio_sink_init (GstAutoAudioSink * sink,
+ GstAutoAudioSinkClass * g_class)
+{
+ sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
+ gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
+
+ gst_auto_audio_sink_reset (sink);
+
+ /* set the default raw audio caps */
+ sink->filter_caps = gst_static_caps_get (&raw_caps);
+
+ /* mark as sink */
+ GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_IS_SINK);
+}
+
+static gboolean
+gst_auto_audio_sink_factory_filter (GstPluginFeature * feature, gpointer data)
+{
+ guint rank;
+ const gchar *klass;
+
+ /* we only care about element factories */
+ if (!GST_IS_ELEMENT_FACTORY (feature))
+ return FALSE;
+
+ /* audio sinks */
+ klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
+ if (!(strstr (klass, "Sink") && strstr (klass, "Audio")))
+ return FALSE;
+
+ /* only select elements with autoplugging rank */
+ rank = gst_plugin_feature_get_rank (feature);
+ if (rank < GST_RANK_MARGINAL)
+ return FALSE;
+
+ return TRUE;
+}
+
+static gint
+gst_auto_audio_sink_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
+{
+ gint diff;
+
+ diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
+ if (diff != 0)
+ return diff;
+ return strcmp (gst_plugin_feature_get_name (f2),
+ gst_plugin_feature_get_name (f1));
+}
+
+static GstElement *
+gst_auto_audio_sink_create_element_with_pretty_name (GstAutoAudioSink * 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_audio_sink_find_best (GstAutoAudioSink * sink)
+{
+ GList *list, *item;
+ GstElement *choice = NULL;
+ GstMessage *message = NULL;
+ GSList *errors = NULL;
+ GstBus *bus = gst_bus_new ();
+ GstPad *el_pad = NULL;
+ GstCaps *el_caps = NULL;
+ gboolean no_match = TRUE;
+
+ list = gst_registry_feature_filter (gst_registry_get_default (),
+ (GstPluginFeatureFilter) gst_auto_audio_sink_factory_filter, FALSE, sink);
+ list = g_list_sort (list, (GCompareFunc) gst_auto_audio_sink_compare_ranks);
+
+ /* We don't treat sound server sinks special. Our policy is that sound
+ * server sinks that have a rank must not auto-spawn a daemon under any
+ * circumstances, so there's nothing for us to worry about here */
+ GST_LOG_OBJECT (sink, "Trying to find usable audio devices ...");
+
+ for (item = list; item != NULL; item = item->next) {
+ GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
+ GstElement *el;
+
+ if ((el = gst_auto_audio_sink_create_element_with_pretty_name (sink, f))) {
+ GstStateChangeReturn ret;
+
+ GST_DEBUG_OBJECT (sink, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
+
+ /* If autoaudiosink 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);
+ no_match = !gst_caps_can_intersect (sink->filter_caps, el_caps);
+ gst_caps_unref (el_caps);
+
+ if (no_match) {
+ GST_DEBUG_OBJECT (sink, "Incompatible caps");
+ gst_object_unref (el);
+ continue;
+ } else {
+ GST_DEBUG_OBJECT (sink, "Found compatible caps");
+ }
+ }
+
+ 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);
+ }
+ }
+
+ 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 audio sink"));
+ choice = gst_element_factory_make ("fakesink", "fake-audio-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;
+}
+
+static gboolean
+gst_auto_audio_sink_detect (GstAutoAudioSink * sink)
+{
+ GstElement *esink;
+ GstPad *targetpad;
+
+ gst_auto_audio_sink_clear_kid (sink);
+
+ /* find element */
+ GST_DEBUG_OBJECT (sink, "Creating new kid");
+ if (!(esink = gst_auto_audio_sink_find_best (sink)))
+ goto no_sink;
+
+ sink->kid = esink;
+ /* Ensure the child is brought up to the right state to match the parent
+ * although it's currently always in READY and
+ * we're always doing NULL->READY. */
+ if (GST_STATE (sink->kid) < GST_STATE (sink))
+ gst_element_set_state (sink->kid, GST_STATE (sink));
+
+ gst_bin_add (GST_BIN (sink), esink);
+
+ /* attach ghost pad */
+ GST_DEBUG_OBJECT (sink, "Re-assigning ghostpad");
+ targetpad = gst_element_get_static_pad (sink->kid, "sink");
+ if (!gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad))
+ goto target_failed;
+
+ gst_object_unref (targetpad);
+ GST_DEBUG_OBJECT (sink, "done changing auto audio sink");
+
+ return TRUE;
+
+ /* ERRORS */
+no_sink:
+ {
+ GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
+ ("Failed to find a supported audio sink"));
+ return FALSE;
+ }
+target_failed:
+ {
+ GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
+ ("Failed to set target pad"));
+ gst_object_unref (targetpad);
+ return FALSE;
+ }
+}
+
+static GstStateChangeReturn
+gst_auto_audio_sink_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+ GstAutoAudioSink *sink = GST_AUTO_AUDIO_SINK (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ if (!gst_auto_audio_sink_detect (sink))
+ return GST_STATE_CHANGE_FAILURE;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_auto_audio_sink_reset (sink);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void
+gst_auto_audio_sink_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstAutoAudioSink *sink = GST_AUTO_AUDIO_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_audio_sink_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstAutoAudioSink *sink = GST_AUTO_AUDIO_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;
+ }
+}
diff --git a/gst/autodetect/gstautoaudiosink.h b/gst/autodetect/gstautoaudiosink.h
new file mode 100644
index 0000000..2e5085f
--- /dev/null
+++ b/gst/autodetect/gstautoaudiosink.h
@@ -0,0 +1,57 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_AUTO_AUDIO_SINK_H__
+#define __GST_AUTO_AUDIO_SINK_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUTO_AUDIO_SINK \
+ (gst_auto_audio_sink_get_type ())
+#define GST_AUTO_AUDIO_SINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_AUDIO_SINK, \
+ GstAutoAudioSink))
+#define GST_AUTO_AUDIO_SINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_AUDIO_SINK, \
+ GstAutoAudioSinkClass))
+#define GST_IS_AUTO_AUDIO_SINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_AUDIO_SINK))
+#define GST_IS_AUTO_AUDIO_SINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_AUDIO_SINK))
+
+typedef struct _GstAutoAudioSink {
+ GstBin parent;
+
+ /* explicit pointers to stuff used */
+ GstPad *pad;
+ GstElement *kid;
+ GstCaps *filter_caps;
+} GstAutoAudioSink;
+
+typedef struct _GstAutoAudioSinkClass {
+ GstBinClass parent_class;
+} GstAutoAudioSinkClass;
+
+GType gst_auto_audio_sink_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUTO_AUDIO_SINK_H__ */
diff --git a/gst/autodetect/gstautoaudiosrc.c b/gst/autodetect/gstautoaudiosrc.c
new file mode 100644
index 0000000..40c53c6
--- /dev/null
+++ b/gst/autodetect/gstautoaudiosrc.c
@@ -0,0 +1,448 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * (c) 2006 Jan Schmidt <thaytan@noraisin.net>
+ * (c) 2008 Stefan Kost <ensonic@users.sf.net>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-autoaudiosrc
+ * @see_also: autovideosrc, alsasrc, osssrc
+ *
+ * autoaudiosrc is an audio source that automatically detects an appropriate
+ * audio source to use. It does so by scanning the registry for all elements
+ * that have <quote>Source</quote> and <quote>Audio</quote> in the class field
+ * of their element information, and also have a non-zero autoplugging rank.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m autoaudiosrc ! audioconvert ! audioresample ! autoaudiosink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstautoaudiosrc.h"
+#include "gstautodetect.h"
+
+/* Properties */
+enum
+{
+ PROP_0,
+ PROP_CAPS,
+};
+
+static GstStateChangeReturn
+gst_auto_audio_src_change_state (GstElement * element,
+ GstStateChange transition);
+static void gst_auto_audio_src_dispose (GstAutoAudioSrc * src);
+static void gst_auto_audio_src_clear_kid (GstAutoAudioSrc * src);
+static void gst_auto_audio_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_auto_audio_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+GST_BOILERPLATE (GstAutoAudioSrc, gst_auto_audio_src, GstBin, GST_TYPE_BIN);
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static void
+gst_auto_audio_src_base_init (gpointer klass)
+{
+ GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (eklass,
+ gst_static_pad_template_get (&src_template));
+
+ gst_element_class_set_details_simple (eklass, "Auto audio source",
+ "Source/Audio",
+ "Wrapper audio source for automatically detected audio source",
+ "Jan Schmidt <thaytan@noraisin.net>, "
+ "Stefan Kost <ensonic@users.sf.net>");
+}
+
+static void
+gst_auto_audio_src_class_init (GstAutoAudioSrcClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *eklass;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ eklass = GST_ELEMENT_CLASS (klass);
+
+ gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_audio_src_dispose;
+ gobject_class->set_property = gst_auto_audio_src_set_property;
+ gobject_class->get_property = gst_auto_audio_src_get_property;
+
+ eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_audio_src_change_state);
+
+ /**
+ * GstAutoAudioSrc:filter-caps
+ *
+ * This property will filter out candidate sinks that can handle the specified
+ * caps. By default only audio sinks that support raw floating point and
+ * integer audio are selected.
+ *
+ * This property can only be set before the element goes to the READY state.
+ *
+ * Since: 0.10.14
+ **/
+ 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 | G_PARAM_STATIC_STRINGS));
+}
+
+static void
+gst_auto_audio_src_dispose (GstAutoAudioSrc * src)
+{
+ gst_auto_audio_src_clear_kid (src);
+
+ if (src->filter_caps)
+ gst_caps_unref (src->filter_caps);
+ src->filter_caps = NULL;
+
+ G_OBJECT_CLASS (parent_class)->dispose ((GObject *) src);
+}
+
+static void
+gst_auto_audio_src_clear_kid (GstAutoAudioSrc * src)
+{
+ if (src->kid) {
+ gst_element_set_state (src->kid, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (src), src->kid);
+ src->kid = NULL;
+
+ /* Don't lose SOURCE flag */
+ GST_OBJECT_FLAG_SET (src, GST_ELEMENT_IS_SOURCE);
+ }
+}
+
+/*
+ * Hack to make initial linking work; ideally, this'd work even when
+ * no target has been assigned to the ghostpad yet.
+ */
+static void
+gst_auto_audio_src_reset (GstAutoAudioSrc * src)
+{
+ GstPad *targetpad;
+
+ gst_auto_audio_src_clear_kid (src);
+
+ /* fakesink placeholder */
+ src->kid = gst_element_factory_make ("fakesrc", "tempsrc");
+ gst_bin_add (GST_BIN (src), src->kid);
+
+ /* pad */
+ targetpad = gst_element_get_static_pad (src->kid, "src");
+ gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
+ gst_object_unref (targetpad);
+}
+
+static GstStaticCaps raw_caps =
+ GST_STATIC_CAPS ("audio/x-raw-int; audio/x-raw-float");
+
+static void
+gst_auto_audio_src_init (GstAutoAudioSrc * src, GstAutoAudioSrcClass * g_class)
+{
+ src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
+ gst_element_add_pad (GST_ELEMENT (src), src->pad);
+
+ gst_auto_audio_src_reset (src);
+
+ /* set the default raw audio caps */
+ src->filter_caps = gst_static_caps_get (&raw_caps);
+
+ /* mark as source */
+ GST_OBJECT_FLAG_SET (src, GST_ELEMENT_IS_SOURCE);
+}
+
+static gboolean
+gst_auto_audio_src_factory_filter (GstPluginFeature * feature, gpointer data)
+{
+ guint rank;
+ const gchar *klass;
+
+ /* we only care about element factories */
+ if (!GST_IS_ELEMENT_FACTORY (feature))
+ return FALSE;
+
+ /* audio sinks */
+ klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
+ if (!(strstr (klass, "Source") && strstr (klass, "Audio")))
+ return FALSE;
+
+ /* only select elements with autoplugging rank */
+ rank = gst_plugin_feature_get_rank (feature);
+ if (rank < GST_RANK_MARGINAL)
+ return FALSE;
+
+ return TRUE;
+}
+
+static gint
+gst_auto_audio_src_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
+{
+ gint diff;
+
+ diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
+ if (diff != 0)
+ return diff;
+ return strcmp (gst_plugin_feature_get_name (f2),
+ gst_plugin_feature_get_name (f1));
+}
+
+static GstElement *
+gst_auto_audio_src_create_element_with_pretty_name (GstAutoAudioSrc * src,
+ GstElementFactory * factory)
+{
+ GstElement *element;
+ gchar *name, *marker;
+
+ marker = g_strdup (GST_PLUGIN_FEATURE (factory)->name);
+ if (g_str_has_suffix (marker, "src"))
+ 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-src-%s", GST_OBJECT_NAME (src), marker);
+ g_free (marker);
+
+ element = gst_element_factory_create (factory, name);
+ g_free (name);
+
+ return element;
+}
+
+static GstElement *
+gst_auto_audio_src_find_best (GstAutoAudioSrc * src)
+{
+ GList *list, *item;
+ GstElement *choice = NULL;
+ GstMessage *message = NULL;
+ GSList *errors = NULL;
+ GstBus *bus = gst_bus_new ();
+ GstPad *el_pad = NULL;
+ GstCaps *el_caps = NULL;
+ gboolean no_match = TRUE;
+
+ list = gst_registry_feature_filter (gst_registry_get_default (),
+ (GstPluginFeatureFilter) gst_auto_audio_src_factory_filter, FALSE, src);
+ list = g_list_sort (list, (GCompareFunc) gst_auto_audio_src_compare_ranks);
+
+ /* We don't treat sound server sources special. Our policy is that sound
+ * server sources that have a rank must not auto-spawn a daemon under any
+ * circumstances, so there's nothing for us to worry about here */
+ GST_LOG_OBJECT (src, "Trying to find usable audio devices ...");
+
+ for (item = list; item != NULL; item = item->next) {
+ GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
+ GstElement *el;
+
+ if ((el = gst_auto_audio_src_create_element_with_pretty_name (src, f))) {
+ GstStateChangeReturn ret;
+
+ GST_DEBUG_OBJECT (src, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
+
+ /* If autoAudioSrc has been provided with filter caps,
+ * accept only sources that match with the filter caps */
+ if (src->filter_caps) {
+ el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "src");
+ el_caps = gst_pad_get_caps (el_pad);
+ gst_object_unref (el_pad);
+ GST_DEBUG_OBJECT (src,
+ "Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
+ src->filter_caps, el_caps);
+ no_match = !gst_caps_can_intersect (src->filter_caps, el_caps);
+ gst_caps_unref (el_caps);
+
+ if (no_match) {
+ GST_DEBUG_OBJECT (src, "Incompatible caps");
+ gst_object_unref (el);
+ continue;
+ } else {
+ GST_DEBUG_OBJECT (src, "Found compatible caps");
+ }
+ }
+
+ gst_element_set_bus (el, bus);
+ ret = gst_element_set_state (el, GST_STATE_READY);
+ if (ret == GST_STATE_CHANGE_SUCCESS) {
+ GST_DEBUG_OBJECT (src, "This worked!");
+ choice = el;
+ break;
+ }
+
+ /* collect all error messages */
+ while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
+ GST_DEBUG_OBJECT (src, "error message %" GST_PTR_FORMAT, message);
+ errors = g_slist_append (errors, message);
+ }
+
+ gst_element_set_state (el, GST_STATE_NULL);
+ gst_object_unref (el);
+ }
+ }
+
+ GST_DEBUG_OBJECT (src, "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 (src, "reposting message %p", errors->data);
+ gst_element_post_message (GST_ELEMENT (src), GST_MESSAGE (errors->data));
+ } else {
+ /* send warning message to application and use a fakesrc */
+ GST_ELEMENT_WARNING (src, RESOURCE, NOT_FOUND, (NULL),
+ ("Failed to find a usable audio source"));
+ choice = gst_element_factory_make ("fakesrc", "fake-audio-src");
+ 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;
+}
+
+static gboolean
+gst_auto_audio_src_detect (GstAutoAudioSrc * src)
+{
+ GstElement *esrc;
+ GstPad *targetpad;
+
+ gst_auto_audio_src_clear_kid (src);
+
+ /* find element */
+ GST_DEBUG_OBJECT (src, "Creating new kid");
+ if (!(esrc = gst_auto_audio_src_find_best (src)))
+ goto no_src;
+
+ src->kid = esrc;
+ /* Ensure the child is brought up to the right state to match the parent
+ * although it's currently always in READY and
+ * we're always doing NULL->READY. */
+ if (GST_STATE (src->kid) < GST_STATE (src))
+ gst_element_set_state (src->kid, GST_STATE (src));
+
+ gst_bin_add (GST_BIN (src), esrc);
+
+ /* attach ghost pad */
+ GST_DEBUG_OBJECT (src, "Re-assigning ghostpad");
+ targetpad = gst_element_get_static_pad (src->kid, "src");
+ if (!gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad))
+ goto target_failed;
+
+ gst_object_unref (targetpad);
+ GST_DEBUG_OBJECT (src, "done changing auto audio source");
+
+ return TRUE;
+
+ /* ERRORS */
+no_src:
+ {
+ GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
+ ("Failed to find a supported audio source"));
+ return FALSE;
+ }
+target_failed:
+ {
+ GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
+ ("Failed to set target pad"));
+ gst_object_unref (targetpad);
+ return FALSE;
+ }
+}
+
+static GstStateChangeReturn
+gst_auto_audio_src_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+ GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ if (!gst_auto_audio_src_detect (src))
+ return GST_STATE_CHANGE_FAILURE;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_auto_audio_src_reset (src);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void
+gst_auto_audio_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (object);
+
+ switch (prop_id) {
+ case PROP_CAPS:
+ if (src->filter_caps)
+ gst_caps_unref (src->filter_caps);
+ src->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_audio_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (object);
+
+ switch (prop_id) {
+ case PROP_CAPS:{
+ gst_value_set_caps (value, src->filter_caps);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
diff --git a/gst/autodetect/gstautoaudiosrc.h b/gst/autodetect/gstautoaudiosrc.h
new file mode 100644
index 0000000..8669627
--- /dev/null
+++ b/gst/autodetect/gstautoaudiosrc.h
@@ -0,0 +1,58 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * (c) 2008 Stefan Kost <ensonic@users.sf.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_AUTO_AUDIO_SRC_H__
+#define __GST_AUTO_AUDIO_SRC_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUTO_AUDIO_SRC \
+ (gst_auto_audio_src_get_type ())
+#define GST_AUTO_AUDIO_SRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_AUDIO_SRC, \
+ GstAutoAudioSrc))
+#define GST_AUTO_AUDIO_SRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_AUDIO_SRC, \
+ GstAutoAudioSrcClass))
+#define GST_IS_AUTO_AUDIO_SRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_AUDIO_SRC))
+#define GST_IS_AUTO_AUDIO_SRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_AUDIO_SRC))
+
+typedef struct _GstAutoAudioSrc {
+ GstBin parent;
+
+ /* explicit pointers to stuff used */
+ GstPad *pad;
+ GstElement *kid;
+ GstCaps *filter_caps;
+} GstAutoAudioSrc;
+
+typedef struct _GstAutoAudioSrcClass {
+ GstBinClass parent_class;
+} GstAutoAudioSrcClass;
+
+GType gst_auto_audio_src_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUTO_AUDIO_SRC_H__ */
diff --git a/gst/autodetect/gstautodetect.c b/gst/autodetect/gstautodetect.c
new file mode 100644
index 0000000..c331655
--- /dev/null
+++ b/gst/autodetect/gstautodetect.c
@@ -0,0 +1,54 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+
+#include "gstautodetect.h"
+#include "gstautoaudiosink.h"
+#include "gstautoaudiosrc.h"
+#include "gstautovideosink.h"
+#include "gstautovideosrc.h"
+
+GST_DEBUG_CATEGORY (autodetect_debug);
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (autodetect_debug, "autodetect", 0,
+ "Autodetection audio/video output wrapper elements");
+
+ return gst_element_register (plugin, "autovideosink",
+ GST_RANK_NONE, GST_TYPE_AUTO_VIDEO_SINK) &&
+ gst_element_register (plugin, "autovideosrc",
+ GST_RANK_NONE, GST_TYPE_AUTO_VIDEO_SRC) &&
+ gst_element_register (plugin, "autoaudiosink",
+ GST_RANK_NONE, GST_TYPE_AUTO_AUDIO_SINK) &&
+ gst_element_register (plugin, "autoaudiosrc",
+ GST_RANK_NONE, GST_TYPE_AUTO_AUDIO_SRC);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "autodetect",
+ "Plugin contains auto-detection plugins for video/audio in- and outputs",
+ plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
diff --git a/gst/autodetect/gstautodetect.h b/gst/autodetect/gstautodetect.h
new file mode 100644
index 0000000..d4952d7
--- /dev/null
+++ b/gst/autodetect/gstautodetect.h
@@ -0,0 +1,26 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_AUTO_DETECT_H__
+#define __GST_AUTO_DETECT_H__
+
+GST_DEBUG_CATEGORY_EXTERN (autodetect_debug);
+#define GST_CAT_DEFAULT autodetect_debug
+
+#endif /* __GST_AUTO_DETECT_H__ */
diff --git a/gst/autodetect/gstautovideosink.c b/gst/autodetect/gstautovideosink.c
new file mode 100644
index 0000000..7e37ffe
--- /dev/null
+++ b/gst/autodetect/gstautovideosink.c
@@ -0,0 +1,434 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * (c) 2006 Jan Schmidt <thaytan@noraisin.net>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-autovideosink
+ * @see_also: autoaudiosink, ximagesink, xvimagesink, sdlvideosink
+ *
+ * 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>Video</quote> in the class field
+ * of their element information, and also have a non-zero autoplugging rank.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m videotestsrc ! autovideosink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#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 GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static void
+gst_auto_video_sink_base_init (gpointer klass)
+{
+ GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (eklass,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_set_details_simple (eklass, "Auto video sink",
+ "Sink/Video",
+ "Wrapper video sink for automatically detected video sink",
+ "Jan Schmidt <thaytan@noraisin.net>");
+}
+
+static void
+gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_video_sink_dispose;
+ gobject_class->set_property = gst_auto_video_sink_set_property;
+ gobject_class->get_property = gst_auto_video_sink_get_property;
+
+ eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_sink_change_state);
+ /**
+ * 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 | G_PARAM_STATIC_STRINGS));
+}
+
+static void
+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);
+}
+
+static void
+gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink)
+{
+ if (sink->kid) {
+ gst_element_set_state (sink->kid, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (sink), sink->kid);
+ sink->kid = NULL;
+ /* Don't lose the SINK flag */
+ GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_IS_SINK);
+ }
+}
+
+/*
+ * Hack to make initial linking work; ideally, this'd work even when
+ * no target has been assigned to the ghostpad yet.
+ */
+
+static void
+gst_auto_video_sink_reset (GstAutoVideoSink * sink)
+{
+ GstPad *targetpad;
+
+ /* Remove any existing element */
+ gst_auto_video_sink_clear_kid (sink);
+
+ /* fakesink placeholder */
+ sink->kid = gst_element_factory_make ("fakesink", "tempsink");
+ gst_bin_add (GST_BIN (sink), sink->kid);
+
+ /* pad, setting this target should always work */
+ targetpad = gst_element_get_static_pad (sink->kid, "sink");
+ gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
+ 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)
+{
+ sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
+ gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
+
+ 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);
+}
+
+static gboolean
+gst_auto_video_sink_factory_filter (GstPluginFeature * feature, gpointer data)
+{
+ guint rank;
+ const gchar *klass;
+
+ /* we only care about element factories */
+ if (!GST_IS_ELEMENT_FACTORY (feature))
+ return FALSE;
+
+ /* video sinks */
+ klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
+ if (!(strstr (klass, "Sink") && strstr (klass, "Video")))
+ return FALSE;
+
+ /* only select elements with autoplugging rank */
+ rank = gst_plugin_feature_get_rank (feature);
+ if (rank < GST_RANK_MARGINAL)
+ return FALSE;
+
+ return TRUE;
+}
+
+static gint
+gst_auto_video_sink_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
+{
+ gint diff;
+
+ diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
+ if (diff != 0)
+ return diff;
+ return strcmp (gst_plugin_feature_get_name (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;
+ GstMessage *message = NULL;
+ GSList *errors = NULL;
+ GstBus *bus = gst_bus_new ();
+ GstPad *el_pad = NULL;
+ GstCaps *el_caps = 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);
+
+ 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;
+
+ if ((el = gst_auto_video_sink_create_element_with_pretty_name (sink, f))) {
+ GstStateChangeReturn ret;
+
+ GST_DEBUG_OBJECT (sink, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
+
+ /* 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);
+ no_match = !gst_caps_can_intersect (sink->filter_caps, el_caps);
+ gst_caps_unref (el_caps);
+
+ if (no_match) {
+ GST_DEBUG_OBJECT (sink, "Incompatible caps");
+ gst_object_unref (el);
+ continue;
+ } else {
+ GST_DEBUG_OBJECT (sink, "Found compatible caps");
+ }
+ }
+
+ 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);
+ }
+ }
+
+ 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;
+}
+
+static gboolean
+gst_auto_video_sink_detect (GstAutoVideoSink * sink)
+{
+ GstElement *esink;
+ GstPad *targetpad;
+
+ gst_auto_video_sink_clear_kid (sink);
+
+ /* find element */
+ GST_DEBUG_OBJECT (sink, "Creating new kid");
+ if (!(esink = gst_auto_video_sink_find_best (sink)))
+ goto no_sink;
+
+ sink->kid = esink;
+ gst_bin_add (GST_BIN (sink), esink);
+
+ /* attach ghost pad */
+ GST_DEBUG_OBJECT (sink, "Re-assigning ghostpad");
+ targetpad = gst_element_get_static_pad (sink->kid, "sink");
+ if (!gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad))
+ goto target_failed;
+
+ gst_object_unref (targetpad);
+ GST_DEBUG_OBJECT (sink, "done changing auto video sink");
+
+ return TRUE;
+
+ /* ERRORS */
+no_sink:
+ {
+ GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
+ ("Failed to find a supported video sink"));
+ return FALSE;
+ }
+target_failed:
+ {
+ GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
+ ("Failed to set target pad"));
+ gst_object_unref (targetpad);
+ return FALSE;
+ }
+}
+
+static GstStateChangeReturn
+gst_auto_video_sink_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+ GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ if (!gst_auto_video_sink_detect (sink))
+ return GST_STATE_CHANGE_FAILURE;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_auto_video_sink_reset (sink);
+ break;
+ default:
+ break;
+ }
+
+ 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;
+ }
+}
diff --git a/gst/autodetect/gstautovideosink.h b/gst/autodetect/gstautovideosink.h
new file mode 100644
index 0000000..9aece2b
--- /dev/null
+++ b/gst/autodetect/gstautovideosink.h
@@ -0,0 +1,57 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_AUTO_VIDEO_SINK_H__
+#define __GST_AUTO_VIDEO_SINK_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUTO_VIDEO_SINK \
+ (gst_auto_video_sink_get_type ())
+#define GST_AUTO_VIDEO_SINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_VIDEO_SINK, \
+ GstAutoVideoSink))
+#define GST_AUTO_VIDEO_SINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_VIDEO_SINK, \
+ GstAutoVideoSinkClass))
+#define GST_IS_AUTO_VIDEO_SINK(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_VIDEO_SINK))
+#define GST_IS_AUTO_VIDEO_SINK_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_VIDEO_SINK))
+
+typedef struct _GstAutoVideoSink {
+ GstBin parent;
+
+ /* explicit pointers to stuff used */
+ GstPad *pad;
+ GstElement *kid;
+ GstCaps *filter_caps;
+} GstAutoVideoSink;
+
+typedef struct _GstAutoVideoSinkClass {
+ GstBinClass parent_class;
+} GstAutoVideoSinkClass;
+
+GType gst_auto_video_sink_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUTO_VIDEO_SINK_H__ */
diff --git a/gst/autodetect/gstautovideosrc.c b/gst/autodetect/gstautovideosrc.c
new file mode 100644
index 0000000..af19456
--- /dev/null
+++ b/gst/autodetect/gstautovideosrc.c
@@ -0,0 +1,436 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * (c) 2006 Jan Schmidt <thaytan@noraisin.net>
+ * (c) 2008 Stefan Kost <ensonic@users.sf.net>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-autovideosrc
+ * @see_also: autoaudiosrc, v4l2src, v4lsrc
+ *
+ * autovideosrc is a video src that automatically detects an appropriate
+ * video source to use. It does so by scanning the registry for all elements
+ * that have <quote>Source</quote> and <quote>Video</quote> in the class field
+ * of their element information, and also have a non-zero autoplugging rank.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m autovideosrc ! xvimagesink
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstautovideosrc.h"
+#include "gstautodetect.h"
+
+/* Properties */
+enum
+{
+ PROP_0,
+ PROP_CAPS,
+};
+
+static GstStateChangeReturn
+gst_auto_video_src_change_state (GstElement * element,
+ GstStateChange transition);
+static void gst_auto_video_src_dispose (GstAutoVideoSrc * src);
+static void gst_auto_video_src_clear_kid (GstAutoVideoSrc * src);
+
+static void gst_auto_video_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_auto_video_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+GST_BOILERPLATE (GstAutoVideoSrc, gst_auto_video_src, GstBin, GST_TYPE_BIN);
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static void
+gst_auto_video_src_base_init (gpointer klass)
+{
+ GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (eklass,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_set_details_simple (eklass, "Auto video source",
+ "Source/Video",
+ "Wrapper video source for automatically detected video source",
+ "Jan Schmidt <thaytan@noraisin.net>, "
+ "Stefan Kost <ensonic@users.sf.net>");
+}
+
+static void
+gst_auto_video_src_class_init (GstAutoVideoSrcClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gobject_class->dispose = (GObjectFinalizeFunc) gst_auto_video_src_dispose;
+ gobject_class->set_property = gst_auto_video_src_set_property;
+ gobject_class->get_property = gst_auto_video_src_get_property;
+
+ eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_src_change_state);
+
+ /**
+ * GstAutoVideoSrc:filter-caps
+ *
+ * This property will filter out candidate sources that can handle the specified
+ * caps. By default only video sources that support raw rgb and yuv video
+ * are selected.
+ *
+ * This property can only be set before the element goes to the READY state.
+ *
+ * Since: 0.10.14
+ **/
+ g_object_class_install_property (gobject_class, PROP_CAPS,
+ g_param_spec_boxed ("filter-caps", "Filter caps",
+ "Filter src candidates using these caps.", GST_TYPE_CAPS,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+}
+
+static void
+gst_auto_video_src_dispose (GstAutoVideoSrc * src)
+{
+ gst_auto_video_src_clear_kid (src);
+
+ if (src->filter_caps)
+ gst_caps_unref (src->filter_caps);
+ src->filter_caps = NULL;
+
+ G_OBJECT_CLASS (parent_class)->dispose ((GObject *) src);
+}
+
+static void
+gst_auto_video_src_clear_kid (GstAutoVideoSrc * src)
+{
+ if (src->kid) {
+ gst_element_set_state (src->kid, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (src), src->kid);
+ src->kid = NULL;
+ /* Don't loose SOURCE flag */
+ GST_OBJECT_FLAG_SET (src, GST_ELEMENT_IS_SOURCE);
+ }
+}
+
+/*
+ * Hack to make initial linking work; ideally, this'd work even when
+ * no target has been assigned to the ghostpad yet.
+ */
+
+static void
+gst_auto_video_src_reset (GstAutoVideoSrc * src)
+{
+ GstPad *targetpad;
+
+ /* Remove any existing element */
+ gst_auto_video_src_clear_kid (src);
+
+ /* fakesrc placeholder */
+ src->kid = gst_element_factory_make ("fakesrc", "tempsrc");
+ gst_bin_add (GST_BIN (src), src->kid);
+
+ /* pad */
+ targetpad = gst_element_get_static_pad (src->kid, "src");
+ gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
+ gst_object_unref (targetpad);
+}
+
+static GstStaticCaps raw_caps =
+ GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb");
+
+static void
+gst_auto_video_src_init (GstAutoVideoSrc * src, GstAutoVideoSrcClass * g_class)
+{
+ src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
+ gst_element_add_pad (GST_ELEMENT (src), src->pad);
+
+ gst_auto_video_src_reset (src);
+
+ /* set the default raw video caps */
+ src->filter_caps = gst_static_caps_get (&raw_caps);
+
+ /* mark as source */
+ GST_OBJECT_FLAG_SET (src, GST_ELEMENT_IS_SOURCE);
+}
+
+static gboolean
+gst_auto_video_src_factory_filter (GstPluginFeature * feature, gpointer data)
+{
+ guint rank;
+ const gchar *klass;
+
+ /* we only care about element factories */
+ if (!GST_IS_ELEMENT_FACTORY (feature))
+ return FALSE;
+
+ /* video sources */
+ klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
+ if (!(strstr (klass, "Source") && strstr (klass, "Video")))
+ return FALSE;
+
+ /* only select elements with autoplugging rank */
+ rank = gst_plugin_feature_get_rank (feature);
+ if (rank < GST_RANK_MARGINAL)
+ return FALSE;
+
+ return TRUE;
+}
+
+static gint
+gst_auto_video_src_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
+{
+ gint diff;
+
+ diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
+ if (diff != 0)
+ return diff;
+ return strcmp (gst_plugin_feature_get_name (f2),
+ gst_plugin_feature_get_name (f1));
+}
+
+static GstElement *
+gst_auto_video_src_create_element_with_pretty_name (GstAutoVideoSrc * src,
+ GstElementFactory * factory)
+{
+ GstElement *element;
+ gchar *name, *marker;
+
+ marker = g_strdup (GST_PLUGIN_FEATURE (factory)->name);
+ if (g_str_has_suffix (marker, "src"))
+ 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-src-%s", GST_OBJECT_NAME (src), marker);
+ g_free (marker);
+
+ element = gst_element_factory_create (factory, name);
+ g_free (name);
+
+ return element;
+}
+
+static GstElement *
+gst_auto_video_src_find_best (GstAutoVideoSrc * src)
+{
+ GList *list, *item;
+ GstElement *choice = NULL;
+ GstMessage *message = NULL;
+ GSList *errors = NULL;
+ GstBus *bus = gst_bus_new ();
+ GstPad *el_pad = NULL;
+ GstCaps *el_caps = NULL;
+ gboolean no_match = TRUE;
+
+ list = gst_registry_feature_filter (gst_registry_get_default (),
+ (GstPluginFeatureFilter) gst_auto_video_src_factory_filter, FALSE, src);
+ list = g_list_sort (list, (GCompareFunc) gst_auto_video_src_compare_ranks);
+
+ GST_LOG_OBJECT (src, "Trying to find usable video devices ...");
+
+ for (item = list; item != NULL; item = item->next) {
+ GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
+ GstElement *el;
+
+ if ((el = gst_auto_video_src_create_element_with_pretty_name (src, f))) {
+ GstStateChangeReturn ret;
+
+ GST_DEBUG_OBJECT (src, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
+
+ /* If AutoVideoSrc has been provided with filter caps,
+ * accept only sources that match with the filter caps */
+ if (src->filter_caps) {
+ el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "src");
+ el_caps = gst_pad_get_caps (el_pad);
+ gst_object_unref (el_pad);
+ GST_DEBUG_OBJECT (src,
+ "Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
+ src->filter_caps, el_caps);
+ no_match = !gst_caps_can_intersect (src->filter_caps, el_caps);
+ gst_caps_unref (el_caps);
+
+ if (no_match) {
+ GST_DEBUG_OBJECT (src, "Incompatible caps");
+ gst_object_unref (el);
+ continue;
+ } else {
+ GST_DEBUG_OBJECT (src, "Found compatible caps");
+ }
+ }
+
+ gst_element_set_bus (el, bus);
+ ret = gst_element_set_state (el, GST_STATE_READY);
+ if (ret == GST_STATE_CHANGE_SUCCESS) {
+ GST_DEBUG_OBJECT (src, "This worked!");
+ choice = el;
+ break;
+ }
+
+ /* collect all error messages */
+ while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
+ GST_DEBUG_OBJECT (src, "error message %" GST_PTR_FORMAT, message);
+ errors = g_slist_append (errors, message);
+ }
+
+ gst_element_set_state (el, GST_STATE_NULL);
+ gst_object_unref (el);
+ }
+ }
+
+ GST_DEBUG_OBJECT (src, "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 (src, "reposting message %p", errors->data);
+ gst_element_post_message (GST_ELEMENT (src), GST_MESSAGE (errors->data));
+ } else {
+ /* send warning message to application and use a fakesrc */
+ GST_ELEMENT_WARNING (src, RESOURCE, NOT_FOUND, (NULL),
+ ("Failed to find a usable video source"));
+ choice = gst_element_factory_make ("fakesrc", "fake-video-src");
+ 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;
+}
+
+static gboolean
+gst_auto_video_src_detect (GstAutoVideoSrc * src)
+{
+ GstElement *esrc;
+ GstPad *targetpad;
+
+ gst_auto_video_src_clear_kid (src);
+
+ /* find element */
+ GST_DEBUG_OBJECT (src, "Creating new kid");
+ if (!(esrc = gst_auto_video_src_find_best (src)))
+ goto no_src;
+
+ src->kid = esrc;
+ gst_bin_add (GST_BIN (src), esrc);
+
+ /* attach ghost pad */
+ GST_DEBUG_OBJECT (src, "Re-assigning ghostpad");
+ targetpad = gst_element_get_static_pad (src->kid, "src");
+ if (!gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad))
+ goto target_failed;
+
+ gst_object_unref (targetpad);
+ GST_DEBUG_OBJECT (src, "done changing auto video source");
+
+ return TRUE;
+
+ /* ERRORS */
+no_src:
+ {
+ GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
+ ("Failed to find a supported video source"));
+ return FALSE;
+ }
+target_failed:
+ {
+ GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
+ ("Failed to set target pad"));
+ gst_object_unref (targetpad);
+ return FALSE;
+ }
+}
+
+static GstStateChangeReturn
+gst_auto_video_src_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+ GstAutoVideoSrc *src = GST_AUTO_VIDEO_SRC (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ if (!gst_auto_video_src_detect (src))
+ return GST_STATE_CHANGE_FAILURE;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_auto_video_src_reset (src);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void
+gst_auto_video_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstAutoVideoSrc *src = GST_AUTO_VIDEO_SRC (object);
+
+ switch (prop_id) {
+ case PROP_CAPS:
+ if (src->filter_caps)
+ gst_caps_unref (src->filter_caps);
+ src->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_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstAutoVideoSrc *src = GST_AUTO_VIDEO_SRC (object);
+
+ switch (prop_id) {
+ case PROP_CAPS:{
+ gst_value_set_caps (value, src->filter_caps);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
diff --git a/gst/autodetect/gstautovideosrc.h b/gst/autodetect/gstautovideosrc.h
new file mode 100644
index 0000000..d72bcd2
--- /dev/null
+++ b/gst/autodetect/gstautovideosrc.h
@@ -0,0 +1,58 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * (c) 2008 Stefan Kost <ensonic@users.sf.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_AUTO_VIDEO_SRC_H__
+#define __GST_AUTO_VIDEO_SRC_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AUTO_VIDEO_SRC \
+ (gst_auto_video_src_get_type ())
+#define GST_AUTO_VIDEO_SRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_VIDEO_SRC, \
+ GstAutoVideoSrc))
+#define GST_AUTO_VIDEO_SRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_VIDEO_SRC, \
+ GstAutoVideoSrcClass))
+#define GST_IS_AUTO_VIDEO_SRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_VIDEO_SRC))
+#define GST_IS_AUTO_VIDEO_SRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_VIDEO_SRC))
+
+typedef struct _GstAutoVideoSrc {
+ GstBin parent;
+
+ /* explicit pointers to stuff used */
+ GstPad *pad;
+ GstElement *kid;
+ GstCaps *filter_caps;
+} GstAutoVideoSrc;
+
+typedef struct _GstAutoVideoSrcClass {
+ GstBinClass parent_class;
+} GstAutoVideoSrcClass;
+
+GType gst_auto_video_src_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AUTO_VIDEO_SRC_H__ */