/* 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-autovideosrc * @title: 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 "Source" and "Video" in the class field * of their element information, and also have a non-zero autoplugging rank. * * ## Example launch line * |[ * gst-launch-1.0 -v -m autovideosrc ! xvimagesink * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstautodetectelements.h" #include "gstautodetect.h" #include "gstautovideosrc.h" G_DEFINE_TYPE (GstAutoVideoSrc, gst_auto_video_src, GST_TYPE_AUTO_DETECT); GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (autovideosrc, "autovideosrc", GST_RANK_NONE, GST_TYPE_AUTO_VIDEO_SRC, autodetect_element_init (plugin)); static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); static GstElement * gst_auto_video_src_create_fake_element (GstAutoDetect * autodetect) { GstElement *fake; fake = gst_element_factory_make ("videotestsrc", "fake-auto-video-src"); if (fake != NULL) { g_object_set (fake, "is-live", TRUE, NULL); } else { GST_ELEMENT_ERROR (autodetect, RESOURCE, NOT_FOUND, ("Failed to find usable video source element."), ("Failed to find a usable video source and couldn't create a video" "testsrc as fallback either, check your GStreamer installation.")); /* This will error out with not-negotiated.. */ fake = gst_element_factory_make ("fakesrc", "fake-auto-video-src"); } return fake; } static void gst_auto_video_src_class_init (GstAutoVideoSrcClass * klass) { GstAutoDetectClass *autoclass = GST_AUTO_DETECT_CLASS (klass); GstElementClass *eklass = GST_ELEMENT_CLASS (klass); gst_element_class_add_static_pad_template (eklass, &src_template); gst_element_class_set_static_metadata (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>"); autoclass->create_fake_element = gst_auto_video_src_create_fake_element; } static void gst_auto_video_src_init (GstAutoVideoSrc * src) { GstAutoDetect *autodetect = GST_AUTO_DETECT (src); autodetect->media_klass = "Video"; autodetect->flag = GST_ELEMENT_FLAG_SOURCE; }