autoconvert: Rename autocolorspace to autovideoconvert

This doesn't just convert between color spaces.

1 files changed, 248 insertions, 0 deletions

diff --git a/gst/autoconvert/gstautovideoconvert.c b/gst/autoconvert/gstautovideoconvert.c
new file mode 100644
index 000000000..4dba911d3
--- /dev/null
+++ b/gst/autoconvert/gstautovideoconvert.c
@@ -0,0 +1,248 @@
+/* GStreamer
+ * Copyright 2010 ST-Ericsson SA 
+ *  @author: Benjamin Gaignard <benjamin.gaignard@stericsson.com>
+ *  
+ * 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.
+ */
+/*
+ * test autovideoconvert:
+ * if rgb2bayer is present
+ * gst-launch videotestsrc num-buffers=2 ! "video/x-raw-rgb,width=100,height=100,framerate=10/1" ! autovideoconvert ! "video/x-raw-bayer,width=100,height=100,format=bggr,framerate=10/1" ! fakesink -v
+ * if bayer2rgb is present
+ * gst-launch videotestsrc num-buffers=2 ! "video/x-raw-bayer,width=100,height=100,format=bggr,framerate=10/1" ! autovideoconvert ! "video/x-raw-rgb,width=100,height=100,framerate=10/1" ! fakesink -v
+ * test with ffmpegvideoconvert
+ * gst-launch videotestsrc num-buffers=2 ! "video/x-raw-rgb,bpp=32,width=100,height=100,framerate=10/1" ! autovideoconvert ! "video/x-raw-rgb,bpp=16,width=100,height=100,framerate=10/1" ! fakesink -v
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstautovideoconvert.h"
+
+GST_DEBUG_CATEGORY (autovideoconvert_debug);
+#define GST_CAT_DEFAULT (autovideoconvert_debug)
+
+GStaticMutex factories_mutex = G_STATIC_MUTEX_INIT;
+guint32 factories_cookie = 0;   /* Cookie from last time when factories was updated */
+GList *factories = NULL;        /* factories we can use for selecting elements */
+
+/* element factory information */
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS_ANY);
+
+
+static GstStateChangeReturn gst_auto_video_convert_change_state (GstElement *
+    element, GstStateChange transition);
+
+void gst_auto_video_convert_update_factory_list (GstAutoVideoConvert *
+    autovideoconvert);
+
+static gboolean
+gst_auto_video_convert_element_filter (GstPluginFeature * feature,
+    GstAutoVideoConvert * autovideoconvert)
+{
+  const gchar *klass;
+
+  /* we only care about element factories */
+  if (G_UNLIKELY (!GST_IS_ELEMENT_FACTORY (feature)))
+    return FALSE;
+
+  klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY_CAST (feature));
+  /* only select color space converter */
+  if (strstr (klass, "Filter") &&
+      strstr (klass, "Converter") && strstr (klass, "Video")) {
+    GST_DEBUG_OBJECT (autovideoconvert,
+        "gst_auto_video_convert_element_filter found %s\n",
+        gst_plugin_feature_get_name (GST_PLUGIN_FEATURE_CAST (feature)));
+    return TRUE;
+  }
+  return FALSE;
+}
+
+
+static GList *
+gst_auto_video_convert_create_factory_list (GstAutoVideoConvert *
+    autovideoconvert)
+{
+  GList *result = NULL;
+
+  /* get the feature list using the filter */
+  result = gst_default_registry_feature_filter ((GstPluginFeatureFilter)
+      gst_auto_video_convert_element_filter, FALSE, autovideoconvert);
+
+  /* sort on rank and name */
+  result = g_list_sort (result, gst_plugin_feature_rank_compare_func);
+
+  return result;
+}
+
+void
+gst_auto_video_convert_update_factory_list (GstAutoVideoConvert *
+    autovideoconvert)
+{
+  /* use a static mutex to protect factories list and factories cookie */
+  g_static_mutex_lock (&factories_mutex);
+
+  /* test if a factories list already exist or not */
+  if (!factories) {
+    /* no factories list create it */
+    factories_cookie = gst_default_registry_get_feature_list_cookie ();
+    factories = gst_auto_video_convert_create_factory_list (autovideoconvert);
+  } else {
+    /* a factories list exist but is it up to date? */
+    if (factories_cookie != gst_default_registry_get_feature_list_cookie ()) {
+      /* we need to update the factories list */
+      /* first free the old one */
+      gst_plugin_feature_list_free (factories);
+      /* then create an updated one */
+      factories_cookie = gst_default_registry_get_feature_list_cookie ();
+      factories = gst_auto_video_convert_create_factory_list (autovideoconvert);
+    }
+  }
+
+  g_static_mutex_unlock (&factories_mutex);
+}
+
+GST_BOILERPLATE (GstAutoVideoConvert, gst_auto_video_convert, GstBin,
+    GST_TYPE_BIN);
+
+static void
+gst_auto_video_convert_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&srctemplate));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sinktemplate));
+
+  gst_element_class_set_details_simple (element_class,
+      "Select color space convertor based on caps", "Generic/Bin",
+      "Selects the right color space convertor based on the caps",
+      "Benjamin Gaignard <benjamin.gaignard@stericsson.com>");
+}
+
+static void
+gst_auto_video_convert_dispose (GObject * object)
+{
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_auto_video_convert_class_init (GstAutoVideoConvertClass * klass)
+{
+  GObjectClass *gobject_class = (GObjectClass *) klass;
+  GstElementClass *gstelement_class = (GstElementClass *) klass;
+
+  gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_auto_video_convert_dispose);
+
+  GST_DEBUG_CATEGORY_INIT (autovideoconvert_debug, "autovideoconvert", 0,
+      "Auto color space converter");
+
+  gstelement_class->change_state =
+      GST_DEBUG_FUNCPTR (gst_auto_video_convert_change_state);
+
+}
+
+static void
+gst_auto_video_convert_add_autoconvert (GstAutoVideoConvert * autovideoconvert)
+{
+  GstPad *pad;
+
+  autovideoconvert->autoconvert =
+      gst_element_factory_make ("autoconvert", "autoconvertchild");
+
+  /* first add autoconvert in bin */
+  gst_bin_add (GST_BIN (autovideoconvert), autovideoconvert->autoconvert);
+
+  /* get sinkpad and link it to ghost sink pad */
+  pad = gst_element_get_static_pad (autovideoconvert->autoconvert, "sink");
+  gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (autovideoconvert->sinkpad),
+      pad);
+  gst_object_unref (pad);
+
+  /* get srcpad and link it to ghost src pad */
+  pad = gst_element_get_static_pad (autovideoconvert->autoconvert, "src");
+  gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (autovideoconvert->srcpad), pad);
+  gst_object_unref (pad);
+}
+
+static void
+gst_auto_video_convert_init (GstAutoVideoConvert * autovideoconvert,
+    GstAutoVideoConvertClass * klass)
+{
+  GstPadTemplate *pad_tmpl;
+
+  /* get sink pad template */
+  pad_tmpl = gst_static_pad_template_get (&sinktemplate);
+  autovideoconvert->sinkpad =
+      gst_ghost_pad_new_no_target_from_template ("sink", pad_tmpl);
+  /* add sink ghost pad */
+  gst_element_add_pad (GST_ELEMENT (autovideoconvert),
+      autovideoconvert->sinkpad);
+
+  /* get src pad template */
+  pad_tmpl = gst_static_pad_template_get (&srctemplate);
+  autovideoconvert->srcpad =
+      gst_ghost_pad_new_no_target_from_template ("src", pad_tmpl);
+  /* add src ghost pad */
+  gst_element_add_pad (GST_ELEMENT (autovideoconvert),
+      autovideoconvert->srcpad);
+
+  return;
+}
+
+static GstStateChangeReturn
+gst_auto_video_convert_change_state (GstElement * element,
+    GstStateChange transition)
+{
+  GstAutoVideoConvert *autovideoconvert = GST_AUTO_VIDEO_CONVERT (element);
+  GstStateChangeReturn ret;
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+  if (ret == GST_STATE_CHANGE_FAILURE)
+    return ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+    {
+      /* create and add autoconvert in bin */
+      gst_auto_video_convert_add_autoconvert (autovideoconvert);
+      /* get an updated list of factories */
+      gst_auto_video_convert_update_factory_list (autovideoconvert);
+      GST_DEBUG_OBJECT (autovideoconvert, "set factories list");
+      /* give factory list to autoconvert */
+      g_object_set (GST_ELEMENT (autovideoconvert->autoconvert), "factories",
+          factories, NULL);
+      /* synchronize autoconvert state with parent state */
+      gst_element_sync_state_with_parent (autovideoconvert->autoconvert);
+      break;
+    }
+    default:
+      break;
+  }
+
+  return ret;
+}