Duplicate the ext/hermes colorspace plugin, and remove Hermes code and GPL code. Fix for new caps negotiation. Rewr...

Original commit message from CVS:
* configure.ac:
* gst/colorspace/Makefile.am:
* gst/colorspace/gstcolorspace.c:
* gst/colorspace/gstcolorspace.h:
* gst/colorspace/yuv2rgb.c:
* gst/colorspace/yuv2rgb.h:
Duplicate the ext/hermes colorspace plugin, and remove Hermes
code and GPL code.  Fix for new caps negotiation.  Rewrite
much of the format handling code, and some of the conversion
code.  Basically, rewrote almost everything.  This element
handles I420, YV12 to RGB conversions.
* ext/hermes/Makefile.am:
* ext/hermes/gsthermescolorspace.c:
Rename colorspace to hermescolorspace.  Fix negotiation issues.
Remove non-Hermes related code.  This element handles lots of
RGB to RGB conversions, but no YUV.
* ext/hermes/gstcolorspace.c:
* ext/hermes/gstcolorspace.h:
* ext/hermes/rgb2yuv.c:
* ext/hermes/yuv2rgb.c:
* ext/hermes/yuv2rgb.h:
* ext/hermes/yuv2rgb_mmx16.s:
* ext/hermes/yuv2yuv.c:
* ext/hermes/yuv2yuv.h:
Remove old code.

1 files changed, 635 insertions, 0 deletions

diff --git a/gst/colorspace/gstcolorspace.c b/gst/colorspace/gstcolorspace.c
new file mode 100644
index 00000000..e923c3a1
--- /dev/null
+++ b/gst/colorspace/gstcolorspace.c
@@ -0,0 +1,635 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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 <gstcolorspace.h>
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include "yuv2rgb.h"
+
+
+static GstColorspaceFormat gst_colorspace_formats[] = {
+  { GST_STATIC_CAPS (GST_VIDEO_YUV_PAD_TEMPLATE_CAPS("I420")) },
+  { GST_STATIC_CAPS (GST_VIDEO_YUV_PAD_TEMPLATE_CAPS("YV12")) },
+  { GST_STATIC_CAPS (GST_VIDEO_RGB_PAD_TEMPLATE_CAPS_32) },
+  { GST_STATIC_CAPS (GST_VIDEO_RGB_PAD_TEMPLATE_CAPS_24) },
+  { GST_STATIC_CAPS (GST_VIDEO_RGB_PAD_TEMPLATE_CAPS_16) },
+};
+
+static GstColorspaceConverter gst_colorspace_converters[] = {
+  { GST_COLORSPACE_I420, GST_COLORSPACE_RGB32, gst_colorspace_I420_to_rgb32 },
+  { GST_COLORSPACE_YV12, GST_COLORSPACE_RGB32, gst_colorspace_YV12_to_rgb32 },
+  { GST_COLORSPACE_I420, GST_COLORSPACE_RGB24, gst_colorspace_I420_to_rgb24 },
+  { GST_COLORSPACE_YV12, GST_COLORSPACE_RGB24, gst_colorspace_YV12_to_rgb24 },
+  { GST_COLORSPACE_I420, GST_COLORSPACE_RGB16, gst_colorspace_I420_to_rgb16 },
+  { GST_COLORSPACE_YV12, GST_COLORSPACE_RGB16, gst_colorspace_YV12_to_rgb16 },
+};
+
+static GstElementDetails colorspace_details = GST_ELEMENT_DETAILS (
+  "Colorspace converter",
+  "Filter/Converter/Video",
+  "Converts video from one colorspace to another",
+  "Wim Taymans <wim.taymans@chello.be>"
+);
+
+static GstStaticPadTemplate gst_colorspace_sink_template =
+GST_STATIC_PAD_TEMPLATE (
+    "sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_YUV_PAD_TEMPLATE_CAPS ("{ I420, YV12 }"))
+);
+
+static GstStaticPadTemplate gst_colorspace_src_template =
+GST_STATIC_PAD_TEMPLATE (
+    "src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (
+      GST_VIDEO_RGB_PAD_TEMPLATE_CAPS_32 "; "
+      GST_VIDEO_RGB_PAD_TEMPLATE_CAPS_24 "; "
+      GST_VIDEO_RGB_PAD_TEMPLATE_CAPS_16
+    )
+);
+
+/* Stereo signals and args */
+enum {
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum {
+  ARG_0,
+  ARG_SOURCE,
+  ARG_DEST,
+};
+
+static void             gst_colorspace_base_init                (gpointer g_class);
+static void		gst_colorspace_class_init		(GstColorspaceClass *klass);
+static void		gst_colorspace_init			(GstColorspace *space);
+
+static void		gst_colorspace_set_property		(GObject *object, guint prop_id, 
+								 const GValue *value, GParamSpec *pspec);
+static void		gst_colorspace_get_property		(GObject *object, guint prop_id, 
+								 GValue *value, GParamSpec *pspec);
+
+static GstPadLinkReturn
+			gst_colorspace_link     		(GstPad *pad, const GstCaps *caps);
+static void		gst_colorspace_chain			(GstPad *pad, GstData *_data);
+static GstElementStateReturn
+			gst_colorspace_change_state 		(GstElement *element);
+
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_colorspace_signals[LAST_SIGNAL] = { 0 }; */
+
+#if 0
+static gboolean 
+colorspace_setup_converter (GstColorspace *space, GstCaps *from_caps, GstCaps *to_caps)
+{
+  guint32 from_space, to_space;
+  GstStructure *from_struct;
+  GstStructure *to_struct;
+
+  g_return_val_if_fail (to_caps != NULL, FALSE);
+  g_return_val_if_fail (from_caps != NULL, FALSE);
+
+  from_struct = gst_caps_get_structure (from_caps, 0);
+  to_struct = gst_caps_get_structure (to_caps, 0);
+
+  from_space = GST_MAKE_FOURCC ('R','G','B',' ');
+  gst_structure_get_fourcc (from_struct, "format", &from_space);
+
+  to_space = GST_MAKE_FOURCC ('R','G','B',' ');
+  gst_structure_get_fourcc (to_struct, "format", &to_space);
+
+  GST_INFO ("set up converter for "  GST_FOURCC_FORMAT
+	    " (%08x) to " GST_FOURCC_FORMAT " (%08x)",
+	    GST_FOURCC_ARGS (from_space), from_space,
+	    GST_FOURCC_ARGS (to_space), to_space);
+
+  switch (from_space) {
+    case GST_MAKE_FOURCC ('R','G','B',' '):
+    {
+      gint from_bpp;
+      
+      gst_structure_get_int (from_struct, "bpp", &from_bpp);
+
+      switch (to_space) {
+        case GST_MAKE_FOURCC ('R','G','B',' '):
+#ifdef HAVE_HERMES
+        {
+          gint to_bpp;
+      
+          gst_structure_get_int (to_struct, "bpp", &to_bpp);
+
+	  gst_structure_get_int (from_struct, "red_mask",   &space->source.r);
+	  gst_structure_get_int (from_struct, "green_mask", &space->source.g);
+	  gst_structure_get_int (from_struct, "blue_mask",  &space->source.b);
+	  space->source.a = 0;
+	  space->srcbpp = space->source.bits = from_bpp;
+	  space->source.indexed = 0;
+	  space->source.has_colorkey = 0;
+
+	  GST_INFO ( "source red mask   %08x", space->source.r);
+	  GST_INFO ( "source green mask %08x", space->source.g);
+	  GST_INFO ( "source blue mask  %08x", space->source.b);
+	  GST_INFO ( "source bpp        %08x", space->srcbpp);
+
+	  gst_structure_get_int (to_struct, "red_mask",   &space->dest.r);
+	  gst_structure_get_int (to_struct, "green_mask", &space->dest.g);
+	  gst_structure_get_int (to_struct, "blue_mask",  &space->dest.b);
+	  space->dest.a = 0;
+	  space->destbpp = space->dest.bits = to_bpp;
+	  space->dest.indexed = 0;
+	  space->dest.has_colorkey = 0;
+
+	  GST_INFO ( "dest red mask   %08x", space->dest.r);
+	  GST_INFO ( "dest green mask %08x", space->dest.g);
+	  GST_INFO ( "dest blue mask  %08x", space->dest.b);
+	  GST_INFO ( "dest bpp        %08x", space->destbpp);
+
+	  if (!Hermes_ConverterRequest (space->h_handle, &space->source, &space->dest)) {
+	    g_warning ("Hermes: could not get converter\n");
+	    return FALSE;
+	  }
+	  GST_INFO ( "converter set up");
+          space->type = GST_COLORSPACE_HERMES;
+	  return TRUE;
+	}
+#else
+	  g_warning ("colorspace: compiled without hermes!");
+	  return FALSE;
+#endif
+        case GST_MAKE_FOURCC ('Y','V','1','2'):
+	  if (from_bpp == 32) {
+            space->type = GST_COLORSPACE_RGB32_YV12;
+	    space->destbpp = 12;
+	    return TRUE;
+	  }
+        case GST_MAKE_FOURCC ('I','4','2','0'):
+	  if (from_bpp == 32) {
+            space->type = GST_COLORSPACE_RGB32_I420;
+	    space->destbpp = 12;
+	    return TRUE;
+	  }
+        case GST_MAKE_FOURCC ('Y','U','Y','2'):
+          GST_INFO ( "colorspace: RGB to YUV with bpp %d not implemented!!", from_bpp);
+	  return FALSE;
+      }
+      break;
+    }
+    case GST_MAKE_FOURCC ('I','4','2','0'):
+      switch (to_space) {
+        case GST_MAKE_FOURCC ('R','G','B',' '):
+          GST_INFO ( "colorspace: YUV to RGB");
+
+	  gst_structure_get_int (to_struct, "bpp", &space->destbpp);
+	  space->converter = gst_colorspace_yuv2rgb_get_converter (from_caps, to_caps);
+          space->type = GST_COLORSPACE_YUV_RGB;
+	  return TRUE;
+        case GST_MAKE_FOURCC ('I','4','2','0'):
+          space->type = GST_COLORSPACE_NONE;
+	  space->destbpp = 12;
+	  return TRUE;
+        case GST_MAKE_FOURCC ('Y','V','1','2'):
+          space->type = GST_COLORSPACE_420_SWAP;
+	  space->destbpp = 12;
+	  return TRUE;
+
+      }
+      break;
+    case GST_MAKE_FOURCC ('Y','U','Y','2'):
+      switch (to_space) {
+        case GST_MAKE_FOURCC ('I','4','2','0'):
+          space->type = GST_COLORSPACE_YUY2_I420;
+	  space->destbpp = 12;
+	  return TRUE;
+        case GST_MAKE_FOURCC ('Y','U','Y','2'):
+          space->type = GST_COLORSPACE_NONE;
+	  space->destbpp = 16;
+	  return TRUE;
+        case GST_MAKE_FOURCC ('R','G','B',' '):
+          GST_INFO ( "colorspace: YUY2 to RGB not implemented!!");
+	  return FALSE;
+      }
+      break;
+    case GST_MAKE_FOURCC ('Y','V','1','2'):
+      switch (to_space) {
+        case GST_MAKE_FOURCC ('R','G','B',' '):
+          GST_INFO ( "colorspace: YV12 to RGB");
+
+	  gst_structure_get_int (to_struct, "bpp", &space->destbpp);
+	  space->converter = gst_colorspace_yuv2rgb_get_converter (from_caps, to_caps);
+          space->type = GST_COLORSPACE_YUV_RGB;
+	  return TRUE;
+        case GST_MAKE_FOURCC ('I','4','2','0'):
+          space->type = GST_COLORSPACE_420_SWAP;
+	  space->destbpp = 12;
+	  return TRUE;
+        case GST_MAKE_FOURCC ('Y','V','1','2'):
+          space->type = GST_COLORSPACE_NONE;
+	  space->destbpp = 12;
+	  return TRUE;
+      }
+      break;
+  }
+  return FALSE;
+}
+#endif
+
+static GstCaps *
+gst_colorspace_caps_remove_format_info (GstCaps *caps, const char *media_type)
+{
+  int i;
+  GstStructure *structure;
+  GstCaps *rgbcaps;
+
+  for (i=0; i<gst_caps_get_size (caps); i++) {
+    structure = gst_caps_get_structure (caps, i);
+
+    gst_structure_set_name (structure, media_type);
+    gst_structure_remove_field (structure, "format");
+    gst_structure_remove_field (structure, "endianness");
+    gst_structure_remove_field (structure, "depth");
+    gst_structure_remove_field (structure, "bpp");
+    gst_structure_remove_field (structure, "red_mask");
+    gst_structure_remove_field (structure, "green_mask");
+    gst_structure_remove_field (structure, "blue_mask");
+  }
+
+  rgbcaps = gst_caps_simplify (caps);
+  gst_caps_free (caps);
+
+  return rgbcaps;
+}
+
+static GstCaps*
+gst_colorspace_getcaps (GstPad *pad)
+{
+  GstColorspace *space;
+  GstPad *otherpad;
+  GstCaps *othercaps;
+  GstCaps *caps;
+  
+  space = GST_COLORSPACE (gst_pad_get_parent (pad));
+
+  otherpad = (pad == space->srcpad) ? space->sinkpad : space->srcpad;
+
+  othercaps = gst_pad_get_allowed_caps (otherpad);
+
+  othercaps = gst_colorspace_caps_remove_format_info (othercaps,
+      (pad == space->srcpad) ? "video/x-raw-rgb" : "video/x-raw-yuv");
+
+  caps = gst_caps_intersect (othercaps, gst_pad_get_pad_template_caps (pad));
+  gst_caps_free (othercaps);
+
+  return caps;
+}
+
+static GstColorSpaceFormatType
+gst_colorspace_get_format (const GstCaps *caps)
+{
+  int i;
+
+  for(i=0; i<G_N_ELEMENTS (gst_colorspace_formats); i++) {
+    GstCaps *icaps;
+    GstCaps *fcaps;
+    
+    fcaps = gst_caps_copy (gst_static_caps_get (
+          &gst_colorspace_formats[i].caps));
+
+    icaps = gst_caps_intersect (caps, fcaps);
+    if (!gst_caps_is_empty (icaps)) {
+      gst_caps_free (icaps);
+      return i;
+    }
+    gst_caps_free (icaps);
+  }
+
+  g_assert_not_reached();
+  return -1;
+}
+
+#define ROUND_UP_2(x)  (((x)+1)&~1)
+#define ROUND_UP_4(x)  (((x)+3)&~3)
+#define ROUND_UP_8(x)  (((x)+7)&~7)
+
+static int
+gst_colorspace_format_get_size(GstColorSpaceFormatType index, int width,
+    int height)
+{
+  int size;
+
+  switch (index) {
+    case GST_COLORSPACE_I420:
+    case GST_COLORSPACE_YV12:
+      size = ROUND_UP_4 (width) * ROUND_UP_2 (height);
+      size += ROUND_UP_8 (width)/2 * ROUND_UP_2 (height)/2;
+      size += ROUND_UP_8 (width)/2 * ROUND_UP_2 (height)/2;
+      return size;
+      break;
+    case GST_COLORSPACE_RGB32:
+      return width*height*4;
+      break;
+    case GST_COLORSPACE_RGB24:
+      return ROUND_UP_4 (width*3) * height;
+      break;
+    case GST_COLORSPACE_RGB16:
+      return ROUND_UP_4 (width*2) * height;
+      break;
+  }
+
+  g_assert_not_reached();
+  return 0;
+}
+
+static int
+gst_colorspace_get_converter (GstColorSpaceFormatType from,
+    GstColorSpaceFormatType to)
+{
+  int i;
+
+  for (i=0; i<G_N_ELEMENTS (gst_colorspace_converters); i++) {
+    GstColorspaceConverter *converter = gst_colorspace_converters + i;
+    if (from == converter->from && to == converter->to) {
+      return i;
+    }
+  }
+  g_assert_not_reached();
+  return -1;
+}
+
+static GstPadLinkReturn
+gst_colorspace_link (GstPad *pad, const GstCaps *caps)
+{
+  GstColorspace *space;
+  GstPad *otherpad;
+  GstStructure *structure;
+  GstPadLinkReturn link_ret;
+  int width, height;
+  double fps;
+  int format_index;
+
+  space = GST_COLORSPACE (gst_pad_get_parent (pad));
+  otherpad = (pad == space->sinkpad) ? space->srcpad : space->sinkpad;
+
+  link_ret = gst_pad_try_set_caps (otherpad, caps);
+  if (link_ret == GST_PAD_LINK_OK) {
+    return link_ret;
+  }
+
+  structure = gst_caps_get_structure (caps, 0);
+
+  format_index = gst_colorspace_get_format (caps);
+  g_print("format index is %d\n", format_index);
+
+  gst_structure_get_int (structure, "width", &width);
+  gst_structure_get_int (structure, "height", &height);
+  gst_structure_get_double (structure, "framerate", &fps);
+
+  GST_INFO ( "size: %dx%d", space->width, space->height);
+
+  if (gst_pad_is_negotiated (otherpad)) {
+    GstCaps *othercaps;
+    
+    othercaps = gst_caps_copy (gst_pad_get_negotiated_caps (otherpad));
+
+    gst_caps_set_simple (othercaps,
+        "width", G_TYPE_INT, width,
+        "height", G_TYPE_INT, height,
+        "framerate", G_TYPE_DOUBLE, fps, NULL);
+
+    link_ret = gst_pad_try_set_caps (otherpad, othercaps);
+    if (link_ret != GST_PAD_LINK_OK) {
+      return link_ret;
+    }
+  }
+
+  if (pad == space->srcpad) {
+    space->src_format_index = format_index;
+  } else {
+    space->sink_format_index = format_index;
+  }
+
+  if (gst_pad_is_negotiated (otherpad)) {
+    space->converter_index = gst_colorspace_get_converter (
+        space->sink_format_index, space->src_format_index);
+
+    g_print("using index %d\n", space->converter_index);
+
+    space->sink_size = gst_colorspace_format_get_size(space->sink_format_index,
+        width,height);
+    space->src_size = gst_colorspace_format_get_size(space->src_format_index,
+        width,height);
+    space->width = width;
+    space->height = height;
+    space->fps = fps;
+  }
+
+#if 0
+  if (gst_pad_is_negotiated (otherpad)) {
+    g_warning ("could not get converter\n");
+    return GST_PAD_LINK_REFUSED;
+  }
+#endif
+
+  return GST_PAD_LINK_OK;
+}
+
+GType
+gst_colorspace_get_type (void)
+{
+  static GType colorspace_type = 0;
+
+  if (!colorspace_type) {
+    static const GTypeInfo colorspace_info = {
+      sizeof(GstColorspaceClass),      
+      gst_colorspace_base_init,
+      NULL,
+      (GClassInitFunc)gst_colorspace_class_init,
+      NULL,
+      NULL,
+      sizeof(GstColorspace),
+      0,
+      (GInstanceInitFunc)gst_colorspace_init,
+    };
+    colorspace_type = g_type_register_static(GST_TYPE_ELEMENT, "GstColorspace", &colorspace_info, 0);
+  }
+  return colorspace_type;
+}
+
+static void
+gst_colorspace_base_init (gpointer g_class)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+  
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_colorspace_src_template));
+  gst_element_class_add_pad_template (element_class,
+     gst_static_pad_template_get (&gst_colorspace_sink_template));
+
+  gst_element_class_set_details (element_class, &colorspace_details);
+}
+  
+static void
+gst_colorspace_class_init (GstColorspaceClass *klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass*)klass;
+  gstelement_class = (GstElementClass*)klass;
+
+  parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+  gobject_class->set_property = gst_colorspace_set_property;
+  gobject_class->get_property = gst_colorspace_get_property;
+
+  gstelement_class->change_state = gst_colorspace_change_state;
+
+  gst_colorspace_table_init(NULL);
+}
+
+static void
+gst_colorspace_init (GstColorspace *space)
+{
+  space->sinkpad = gst_pad_new_from_template (
+     gst_static_pad_template_get (&gst_colorspace_sink_template),
+     "sink");
+  gst_pad_set_link_function (space->sinkpad, gst_colorspace_link);
+  gst_pad_set_getcaps_function (space->sinkpad, gst_colorspace_getcaps);
+  gst_pad_set_chain_function(space->sinkpad,gst_colorspace_chain);
+  gst_element_add_pad(GST_ELEMENT(space),space->sinkpad);
+
+  space->srcpad = gst_pad_new_from_template (
+     gst_static_pad_template_get (&gst_colorspace_src_template),
+     "src");
+  gst_element_add_pad(GST_ELEMENT(space),space->srcpad);
+  gst_pad_set_link_function (space->srcpad, gst_colorspace_link);
+}
+
+static void
+gst_colorspace_chain (GstPad *pad,GstData *_data)
+{
+  GstBuffer *buf = GST_BUFFER (_data);
+  GstColorspace *space;
+  GstBuffer *outbuf = NULL;
+  GstColorspaceConverter *converter;
+
+  g_return_if_fail (pad != NULL);
+  g_return_if_fail (GST_IS_PAD (pad));
+  g_return_if_fail (buf != NULL);
+
+  space = GST_COLORSPACE (gst_pad_get_parent (pad));
+  
+  g_return_if_fail (space != NULL);
+  g_return_if_fail (GST_IS_COLORSPACE (space));
+
+  if (GST_BUFFER_SIZE (buf) < space->sink_size) {
+    g_critical ("input size is smaller than expected");
+  }
+
+  outbuf = gst_pad_alloc_buffer (space->srcpad, GST_BUFFER_OFFSET_NONE,
+      space->src_size);
+  
+  converter = gst_colorspace_converters + space->converter_index;
+  converter->convert (space, GST_BUFFER_DATA (outbuf),
+      GST_BUFFER_DATA (buf));
+
+  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+  GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
+
+  gst_buffer_unref (buf);
+  gst_pad_push (space->srcpad, GST_DATA (outbuf));
+}
+
+static GstElementStateReturn
+gst_colorspace_change_state (GstElement *element)
+{
+  GstColorspace *space;
+
+  space = GST_COLORSPACE (element);
+
+  switch (GST_STATE_TRANSITION (element)) {
+    case GST_STATE_PAUSED_TO_PLAYING:
+      break;
+    case GST_STATE_PLAYING_TO_PAUSED:
+      break;
+    case GST_STATE_PAUSED_TO_READY:
+      break;
+  }
+
+  return parent_class->change_state (element);
+}
+
+static void
+gst_colorspace_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+  GstColorspace *space;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail(GST_IS_COLORSPACE(object));
+  space = GST_COLORSPACE(object);
+
+  switch (prop_id) {
+    default:
+      break;
+  }
+}
+
+static void
+gst_colorspace_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+  GstColorspace *space;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail(GST_IS_COLORSPACE(object));
+  space = GST_COLORSPACE(object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+plugin_init (GstPlugin *plugin)
+{
+  if (!gst_element_register (plugin, "colorspace", GST_RANK_PRIMARY,
+        GST_TYPE_COLORSPACE))
+    return FALSE;
+
+  return TRUE;
+}
+
+GST_PLUGIN_DEFINE (
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "colorspace",
+  "Hermes colorspace converter",
+  plugin_init,
+  VERSION,
+  "LGPL",
+  GST_PACKAGE,
+  GST_ORIGIN)