gst_plugins_good/gst/autodetect/gstautovideosink.c
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 15:15:52 +0300
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permissions -rw-r--r--
Revision: 201011 Kit: 201015
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/* GStreamer
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 * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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 * (c) 2006 Jan Schmidt <thaytan@noraisin.net>
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Library General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Library General Public License for more details.
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 *
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 * You should have received a copy of the GNU Library General Public
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 * License along with this library; if not, write to the
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 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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 * Boston, MA 02111-1307, USA.
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 */
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/**
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 * SECTION:element-autovideosink
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 * @see_also: autoaudiosink, ximagesink, xvimagesink, sdlvideosink
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 *
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 * autovideosink is a video sink that automatically detects an appropriate
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 * video sink to use.  It does so by scanning the registry for all elements
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 * that have <quote>Sink</quote> and <quote>Video</quote> in the class field
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 * of their element information, and also have a non-zero autoplugging rank.
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 *
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 * <refsect2>
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 * <title>Example launch line</title>
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 * |[
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 * gst-launch -v -m videotestsrc ! autovideosink
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 * ]|
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 * </refsect2>
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 */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstautovideosink.h"
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#include "gstautodetect.h"
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/* Properties */
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enum
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{
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  PROP_0,
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  PROP_CAPS,
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};
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static GstStateChangeReturn
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gst_auto_video_sink_change_state (GstElement * element,
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    GstStateChange transition);
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static void gst_auto_video_sink_dispose (GstAutoVideoSink * sink);
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static void gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink);
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static void gst_auto_video_sink_set_property (GObject * object, guint prop_id,
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    const GValue * value, GParamSpec * pspec);
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static void gst_auto_video_sink_get_property (GObject * object, guint prop_id,
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    GValue * value, GParamSpec * pspec);
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GST_BOILERPLATE (GstAutoVideoSink, gst_auto_video_sink, GstBin, GST_TYPE_BIN);
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static const GstElementDetails gst_auto_video_sink_details =
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GST_ELEMENT_DETAILS ("Auto video sink",
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    "Sink/Video",
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    "Wrapper video sink for automatically detected video sink",
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    "Ronald Bultje <rbultje@ronald.bitfreak.net>\n"
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    "Jan Schmidt <thaytan@noraisin.net>");
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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    GST_PAD_SINK,
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    GST_PAD_ALWAYS,
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    GST_STATIC_CAPS_ANY);
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static void
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gst_auto_video_sink_base_init (gpointer klass)
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{
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  GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
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  gst_element_class_add_pad_template (eklass,
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      gst_static_pad_template_get (&sink_template));
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  gst_element_class_set_details (eklass, &gst_auto_video_sink_details);
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}
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static void
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gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass)
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{
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  GObjectClass *gobject_class;
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  GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
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  gobject_class = G_OBJECT_CLASS (klass);
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  gobject_class->dispose =
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      (GObjectFinalizeFunc) GST_DEBUG_FUNCPTR (gst_auto_video_sink_dispose);
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  eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_video_sink_change_state);
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  gobject_class->set_property =
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      GST_DEBUG_FUNCPTR (gst_auto_video_sink_set_property);
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  gobject_class->get_property =
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      GST_DEBUG_FUNCPTR (gst_auto_video_sink_get_property);
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  /**
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   * GstAutoVideoSink:filter-caps
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   *
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   * This property will filter out candidate sinks that can handle the specified
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   * caps. By default only video sinks that support raw rgb and yuv video
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   * are selected.
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   *
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   111
   * This property can only be set before the element goes to the READY state.
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   112
   *
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   113
   * Since: 0.10.7
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   **/
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   115
  g_object_class_install_property (gobject_class, PROP_CAPS,
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      g_param_spec_boxed ("filter-caps", "Filter caps",
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          "Filter sink candidates using these caps.", GST_TYPE_CAPS,
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   118
          G_PARAM_READWRITE));
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}
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   120
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static void
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gst_auto_video_sink_dispose (GstAutoVideoSink * sink)
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{
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  gst_auto_video_sink_clear_kid (sink);
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   125
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  if (sink->filter_caps)
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    gst_caps_unref (sink->filter_caps);
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  sink->filter_caps = NULL;
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   129
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  G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
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}
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   132
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static void
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gst_auto_video_sink_clear_kid (GstAutoVideoSink * sink)
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{
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  if (sink->kid) {
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    gst_element_set_state (sink->kid, GST_STATE_NULL);
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   138
    gst_bin_remove (GST_BIN (sink), sink->kid);
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    sink->kid = NULL;
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  }
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}
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   142
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   143
/*
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 * Hack to make initial linking work; ideally, this'd work even when
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   145
 * no target has been assigned to the ghostpad yet.
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 */
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   147
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static void
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gst_auto_video_sink_reset (GstAutoVideoSink * sink)
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{
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  GstPad *targetpad;
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   152
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  /* Remove any existing element */
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   154
  gst_auto_video_sink_clear_kid (sink);
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   155
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   156
  /* fakesink placeholder */
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   157
  sink->kid = gst_element_factory_make ("fakesink", "tempsink");
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   158
  gst_bin_add (GST_BIN (sink), sink->kid);
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   159
8
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   160
  /* pad, setting this target should always work */
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   161
  targetpad = gst_element_get_static_pad (sink->kid, "sink");
2
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   162
  gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
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   163
  gst_object_unref (targetpad);
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   164
}
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   165
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   166
static GstStaticCaps raw_caps =
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   167
    GST_STATIC_CAPS ("video/x-raw-yuv; video/x-raw-rgb");
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   168
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static void
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   170
gst_auto_video_sink_init (GstAutoVideoSink * sink,
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   171
    GstAutoVideoSinkClass * g_class)
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   172
{
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   173
  sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
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   174
  gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
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   175
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   176
  gst_auto_video_sink_reset (sink);
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   177
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   178
  /* set the default raw video caps */
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   179
  sink->filter_caps = gst_static_caps_get (&raw_caps);
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   180
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   181
  /* mark as sink */
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   182
  GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_IS_SINK);
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   183
}
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   184
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   185
static gboolean
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   186
gst_auto_video_sink_factory_filter (GstPluginFeature * feature, gpointer data)
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   187
{
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   188
  guint rank;
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   189
  const gchar *klass;
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   190
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   191
  /* we only care about element factories */
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   192
  if (!GST_IS_ELEMENT_FACTORY (feature))
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   193
    return FALSE;
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   194
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   195
  /* video sinks */
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   196
  klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
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parents:
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   197
  if (!(strstr (klass, "Sink") && strstr (klass, "Video")))
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   198
    return FALSE;
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   199
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   200
  /* only select elements with autoplugging rank */
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parents:
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   201
  rank = gst_plugin_feature_get_rank (feature);
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   202
  if (rank < GST_RANK_MARGINAL)
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   203
    return FALSE;
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   204
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   205
  return TRUE;
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   206
}
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   207
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   208
static gint
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   209
gst_auto_video_sink_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
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   210
{
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   211
  gint diff;
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   212
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   213
  diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
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   214
  if (diff != 0)
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   215
    return diff;
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parents:
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   216
  return strcmp (gst_plugin_feature_get_name (f2),
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   217
      gst_plugin_feature_get_name (f1));
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   218
}
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   219
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   220
static GstElement *
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parents:
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   221
gst_auto_video_sink_create_element_with_pretty_name (GstAutoVideoSink * sink,
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parents:
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   222
    GstElementFactory * factory)
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parents:
diff changeset
   223
{
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   224
  GstElement *element;
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   225
  gchar *name, *marker;
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parents:
diff changeset
   226
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parents:
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   227
  marker = g_strdup (GST_PLUGIN_FEATURE (factory)->name);
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parents:
diff changeset
   228
  if (g_str_has_suffix (marker, "sink"))
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   229
    marker[strlen (marker) - 4] = '\0';
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diff changeset
   230
  if (g_str_has_prefix (marker, "gst"))
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parents:
diff changeset
   231
    g_memmove (marker, marker + 3, strlen (marker + 3) + 1);
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parents:
diff changeset
   232
  name = g_strdup_printf ("%s-actual-sink-%s", GST_OBJECT_NAME (sink), marker);
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parents:
diff changeset
   233
  g_free (marker);
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parents:
diff changeset
   234
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parents:
diff changeset
   235
  element = gst_element_factory_create (factory, name);
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parents:
diff changeset
   236
  g_free (name);
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parents:
diff changeset
   237
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parents:
diff changeset
   238
  return element;
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parents:
diff changeset
   239
}
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parents:
diff changeset
   240
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parents:
diff changeset
   241
static GstElement *
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   242
gst_auto_video_sink_find_best (GstAutoVideoSink * sink)
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parents:
diff changeset
   243
{
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parents:
diff changeset
   244
  GList *list, *item;
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parents:
diff changeset
   245
  GstElement *choice = NULL;
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parents:
diff changeset
   246
  GstMessage *message = NULL;
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parents:
diff changeset
   247
  GSList *errors = NULL;
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parents:
diff changeset
   248
  GstBus *bus = gst_bus_new ();
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parents:
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   249
  GstPad *el_pad = NULL;
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parents:
diff changeset
   250
  GstCaps *el_caps = NULL, *intersect = NULL;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   251
  gboolean no_match = TRUE;
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parents:
diff changeset
   252
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   253
  list = gst_registry_feature_filter (gst_registry_get_default (),
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   254
      (GstPluginFeatureFilter) gst_auto_video_sink_factory_filter, FALSE, sink);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   255
  list = g_list_sort (list, (GCompareFunc) gst_auto_video_sink_compare_ranks);
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parents:
diff changeset
   256
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   257
  GST_LOG_OBJECT (sink, "Trying to find usable video devices ...");
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parents:
diff changeset
   258
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   259
  for (item = list; item != NULL; item = item->next) {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   260
    GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   261
    GstElement *el;
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parents:
diff changeset
   262
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   263
    if ((el = gst_auto_video_sink_create_element_with_pretty_name (sink, f))) {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   264
      GstStateChangeReturn ret;
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parents:
diff changeset
   265
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   266
      GST_DEBUG_OBJECT (sink, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
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parents:
diff changeset
   267
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   268
      /* If autovideosink has been provided with filter caps,
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   269
       * accept only sinks that match with the filter caps */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   270
      if (sink->filter_caps) {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   271
        el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "sink");
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parents:
diff changeset
   272
        el_caps = gst_pad_get_caps (el_pad);
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parents:
diff changeset
   273
        gst_object_unref (el_pad);
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parents:
diff changeset
   274
        GST_DEBUG_OBJECT (sink,
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   275
            "Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   276
            sink->filter_caps, el_caps);
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parents:
diff changeset
   277
        intersect = gst_caps_intersect (sink->filter_caps, el_caps);
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parents:
diff changeset
   278
        no_match = gst_caps_is_empty (intersect);
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parents:
diff changeset
   279
        gst_caps_unref (el_caps);
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parents:
diff changeset
   280
        gst_caps_unref (intersect);
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parents:
diff changeset
   281
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parents:
diff changeset
   282
        if (no_match) {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   283
          GST_DEBUG_OBJECT (sink, "Incompatible caps");
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   284
          gst_object_unref (el);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   285
          continue;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   286
        } else {
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   287
          GST_DEBUG_OBJECT (sink, "Found compatible caps");
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parents:
diff changeset
   288
        }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   289
      }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   290
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   291
      gst_element_set_bus (el, bus);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   292
      ret = gst_element_set_state (el, GST_STATE_READY);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   293
      if (ret == GST_STATE_CHANGE_SUCCESS) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   294
        GST_DEBUG_OBJECT (sink, "This worked!");
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   295
        choice = el;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   296
        break;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   297
      }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   298
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   299
      /* collect all error messages */
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   300
      while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   301
        GST_DEBUG_OBJECT (sink, "error message %" GST_PTR_FORMAT, message);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   302
        errors = g_slist_append (errors, message);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   303
      }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   304
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   305
      gst_element_set_state (el, GST_STATE_NULL);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   306
      gst_object_unref (el);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   307
    }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   308
  }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   309
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   310
  GST_DEBUG_OBJECT (sink, "done trying");
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parents:
diff changeset
   311
  if (!choice) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   312
    if (errors) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   313
      /* FIXME: we forward the first error for now; but later on it might make
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   314
       * sense to actually analyse them */
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   315
      gst_message_ref (GST_MESSAGE (errors->data));
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   316
      GST_DEBUG_OBJECT (sink, "reposting message %p", errors->data);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   317
      gst_element_post_message (GST_ELEMENT (sink), GST_MESSAGE (errors->data));
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   318
    } else {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   319
      /* send warning message to application and use a fakesink */
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   320
      GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   321
          ("Failed to find a usable video sink"));
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   322
      choice = gst_element_factory_make ("fakesink", "fake-video-sink");
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   323
      if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   324
        g_object_set (choice, "sync", TRUE, NULL);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   325
      gst_element_set_state (choice, GST_STATE_READY);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   326
    }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   327
  }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   328
  gst_object_unref (bus);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   329
  gst_plugin_feature_list_free (list);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   330
  g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   331
  g_slist_free (errors);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   332
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   333
  return choice;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   334
}
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   335
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   336
static gboolean
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
gst_auto_video_sink_detect (GstAutoVideoSink * sink)
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
{
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
  GstElement *esink;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
  GstPad *targetpad;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
  gst_auto_video_sink_clear_kid (sink);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
  /* find element */
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
  GST_DEBUG_OBJECT (sink, "Creating new kid");
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
  if (!(esink = gst_auto_video_sink_find_best (sink)))
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
    goto no_sink;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
  sink->kid = esink;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
  gst_bin_add (GST_BIN (sink), esink);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
  /* attach ghost pad */
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
  GST_DEBUG_OBJECT (sink, "Re-assigning ghostpad");
8
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   354
  targetpad = gst_element_get_static_pad (sink->kid, "sink");
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   355
  if (!gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad))
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   356
    goto target_failed;
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   357
2
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
  gst_object_unref (targetpad);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
  GST_DEBUG_OBJECT (sink, "done changing auto video sink");
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
  return TRUE;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
  /* ERRORS */
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
no_sink:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
  {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
    GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
        ("Failed to find a supported video sink"));
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
    return FALSE;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
  }
8
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   370
target_failed:
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   371
  {
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   372
    GST_ELEMENT_ERROR (sink, LIBRARY, INIT, (NULL),
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   373
        ("Failed to set target pad"));
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   374
    gst_object_unref (targetpad);
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   375
    return FALSE;
4a7fac7dd34a Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 2
diff changeset
   376
  }
2
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
}
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
static GstStateChangeReturn
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
gst_auto_video_sink_change_state (GstElement * element,
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
    GstStateChange transition)
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
{
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
  GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (element);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
  switch (transition) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
    case GST_STATE_CHANGE_NULL_TO_READY:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
      if (!gst_auto_video_sink_detect (sink))
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
        return GST_STATE_CHANGE_FAILURE;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
    default:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
  }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
  switch (transition) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
    case GST_STATE_CHANGE_READY_TO_NULL:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
      gst_auto_video_sink_reset (sink);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
    default:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
  }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
  return ret;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
}
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
static void
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
gst_auto_video_sink_set_property (GObject * object, guint prop_id,
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
    const GValue * value, GParamSpec * pspec)
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
{
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
  GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
  switch (prop_id) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
    case PROP_CAPS:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
      if (sink->filter_caps)
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
        gst_caps_unref (sink->filter_caps);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
      sink->filter_caps = gst_caps_copy (gst_value_get_caps (value));
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
    default:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
  }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
}
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
static void
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
gst_auto_video_sink_get_property (GObject * object, guint prop_id,
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
    GValue * value, GParamSpec * pspec)
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
{
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
  GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
  switch (prop_id) {
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
    case PROP_CAPS:{
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
      gst_value_set_caps (value, sink->filter_caps);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
    }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
    default:
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
      break;
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
  }
5505e8908944 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
}