VideoFilter inherits from

Original commit message from CVS:
2005-11-23  Julien MOUTTE  <julien@moutte.net>

* ext/cairo/gsttimeoverlay.c:
(gst_timeoverlay_update_font_height),
(gst_timeoverlay_set_caps), (gst_timeoverlay_get_unit_size),
(gst_timeoverlay_transform), (gst_timeoverlay_base_init),
(gst_timeoverlay_class_init), (gst_timeoverlay_init),
(gst_timeoverlay_get_type):
* ext/cairo/gsttimeoverlay.h:
* gst/debug/Makefile.am:
* gst/debug/gstnavigationtest.c:
(gst_navigationtest_handle_src_event),
(gst_navigationtest_get_unit_size),
(gst_navigationtest_set_caps),
(gst_navigationtest_transform),
(gst_navigationtest_change_state),
(gst_navigationtest_base_init), (gst_navigationtest_class_init),
(gst_navigationtest_init), (gst_navigationtest_get_type),
(plugin_init):
* gst/debug/gstnavigationtest.h:
* gst/effectv/Makefile.am:
* gst/effectv/gstaging.c: (gst_agingtv_set_caps),
(gst_agingtv_get_unit_size), (gst_agingtv_transform),
(gst_agingtv_base_init), (gst_agingtv_class_init),
(gst_agingtv_init), (gst_agingtv_get_type):
* gst/effectv/gstdice.c: (gst_dicetv_set_caps),
(gst_dicetv_get_unit_size), (gst_dicetv_transform),
(gst_dicetv_base_init), (gst_dicetv_class_init),
(gst_dicetv_init),
(gst_dicetv_get_type):
* gst/effectv/gstedge.c: (gst_edgetv_set_caps),
(gst_edgetv_get_unit_size), (gst_edgetv_transform),
(gst_edgetv_base_init), (gst_edgetv_class_init),
(gst_edgetv_init),
(gst_edgetv_get_type):
* gst/effectv/gsteffectv.c:
* gst/effectv/gsteffectv.h:
* gst/effectv/gstquark.c: (gst_quarktv_set_caps),
(gst_quarktv_get_unit_size), (fastrand),
(gst_quarktv_transform),
(gst_quarktv_change_state), (gst_quarktv_base_init),
(gst_quarktv_class_init), (gst_quarktv_init),
(gst_quarktv_get_type):
* gst/effectv/gstrev.c: (gst_revtv_set_caps),
(gst_revtv_get_unit_size), (gst_revtv_transform),
(gst_revtv_base_init), (gst_revtv_class_init), (gst_revtv_init),
(gst_revtv_get_type):
* gst/effectv/gstshagadelic.c: (gst_shagadelictv_set_caps),
(gst_shagadelictv_get_unit_size), (gst_shagadelictv_transform),
(gst_shagadelictv_base_init), (gst_shagadelictv_class_init),
(gst_shagadelictv_init), (gst_shagadelictv_get_type):
* gst/effectv/gstvertigo.c: (gst_vertigotv_set_caps),
(gst_vertigotv_get_unit_size), (gst_vertigotv_transform),
(gst_vertigotv_base_init), (gst_vertigotv_class_init),
(gst_vertigotv_init), (gst_vertigotv_get_type):
* gst/effectv/gstwarp.c: (gst_warptv_set_caps),
(gst_warptv_get_unit_size), (gst_warptv_transform),
(gst_warptv_base_init), (gst_warptv_class_init),
(gst_warptv_init),
(gst_warptv_get_type):
* gst/videofilter/Makefile.am:
* gst/videofilter/gstvideobalance.c:
* gst/videofilter/gstvideobalance.h:
* gst/videofilter/gstvideofilter.c: (gst_videofilter_get_type),
(gst_videofilter_class_init), (gst_videofilter_init):
* gst/videofilter/gstvideofilter.h:
* gst/videofilter/gstvideoflip.c: (gst_videoflip_set_caps),
(gst_videoflip_transform_caps), (gst_videoflip_get_unit_size),
(gst_videoflip_flip), (gst_videoflip_transform),
(gst_videoflip_handle_src_event), (gst_videoflip_set_property),
(gst_videoflip_base_init), (gst_videoflip_class_init),
(gst_videoflip_init), (plugin_init), (gst_videoflip_get_type):
* gst/videofilter/gstvideoflip.h: VideoFilter inherits from
BaseTransform, it's just a place holder for now and every video
effect plugin has been ported to use BaseTransform features
directly. QuarkTV was fixed too (was broken), navigationtest
works
and best for the end, videoflip converts navigation events
depending
on flip method ! Fixes #320953

1 files changed, 390 insertions, 223 deletions

diff --git a/gst/videofilter/gstvideoflip.c b/gst/videofilter/gstvideoflip.c
index da9a76b9..d0f3263e 100644
--- a/gst/videofilter/gstvideoflip.c
+++ b/gst/videofilter/gstvideoflip.c
@@ -27,17 +27,11 @@
 #include "config.h"
 #endif
 
-/*#define DEBUG_ENABLED */
 #include "gstvideoflip.h"
-#include <string.h>
 
-/* GstVideoflip signals and args */
-enum
-{
-  /* FILL ME */
-  LAST_SIGNAL
-};
+#include <gst/video/video.h>
 
+/* GstVideoflip signals and args */
 enum
 {
   ARG_0,
@@ -45,21 +39,30 @@ enum
       /* FILL ME */
 };
 
-GST_DEBUG_CATEGORY_STATIC (gst_videoflip_debug);
-#define GST_CAT_DEFAULT gst_videoflip_debug
+GST_DEBUG_CATEGORY (videoflip_debug);
+#define GST_CAT_DEFAULT videoflip_debug
 
-static void gst_videoflip_base_init (gpointer g_class);
-static void gst_videoflip_class_init (gpointer g_class, gpointer class_data);
-static void gst_videoflip_init (GTypeInstance * instance, gpointer g_class);
+static GstElementDetails videoflip_details =
+GST_ELEMENT_DETAILS ("Video Flipper",
+    "Filter/Effect/Video",
+    "Flips and rotates video",
+    "David Schleef <ds@schleef.org>");
+
+static GstStaticPadTemplate gst_videoflip_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ IYUV, I420, YV12 }"))
+    );
 
-static void gst_videoflip_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_videoflip_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
+static GstStaticPadTemplate gst_videoflip_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ IYUV, I420, YV12 }"))
+    );
 
-static void gst_videoflip_planar411 (GstVideofilter * videofilter, void *dest,
-    void *src);
-static void gst_videoflip_setup (GstVideofilter * videofilter);
+static GstVideofilterClass *parent_class = NULL;
 
 #define GST_TYPE_VIDEOFLIP_METHOD (gst_videoflip_method_get_type())
 
@@ -72,7 +75,7 @@ gst_videoflip_method_get_type (void)
     {GST_VIDEOFLIP_METHOD_90R, "Rotate clockwise 90 degrees", "clockwise"},
     {GST_VIDEOFLIP_METHOD_180, "Rotate 180 degrees", "rotate-180"},
     {GST_VIDEOFLIP_METHOD_90L, "Rotate counter-clockwise 90 degrees",
-          "counterclockwise"},
+        "counterclockwise"},
     {GST_VIDEOFLIP_METHOD_HORIZ, "Flip horizontally", "horizontal-flip"},
     {GST_VIDEOFLIP_METHOD_VERT, "Flip vertically", "vertical-flip"},
     {GST_VIDEOFLIP_METHOD_TRANS,
@@ -89,90 +92,318 @@ gst_videoflip_method_get_type (void)
   return videoflip_method_type;
 }
 
-GType
-gst_videoflip_get_type (void)
+static gboolean
+gst_videoflip_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
+    GstCaps * outcaps)
 {
-  static GType videoflip_type = 0;
+  GstVideoflip *vf;
+  GstStructure *in_s, *out_s;
+  gboolean ret = FALSE;
+
+  vf = GST_VIDEOFLIP (btrans);
+
+  in_s = gst_caps_get_structure (incaps, 0);
+  out_s = gst_caps_get_structure (outcaps, 0);
+
+  if (gst_structure_get_int (in_s, "width", &vf->from_width) &&
+      gst_structure_get_int (in_s, "height", &vf->from_height) &&
+      gst_structure_get_int (out_s, "width", &vf->to_width) &&
+      gst_structure_get_int (out_s, "height", &vf->to_height)) {
+    /* Check that they are correct */
+    switch (vf->method) {
+      case GST_VIDEOFLIP_METHOD_90R:
+      case GST_VIDEOFLIP_METHOD_90L:
+      case GST_VIDEOFLIP_METHOD_TRANS:
+      case GST_VIDEOFLIP_METHOD_OTHER:
+        if ((vf->from_width != vf->to_height) ||
+            (vf->from_height != vf->to_width)) {
+          GST_DEBUG_OBJECT (vf, "we are inverting width and height but caps "
+              "are not correct : %dx%d to %dx%d", vf->from_width,
+              vf->from_height, vf->to_width, vf->to_height);
+          goto beach;
+        }
+        break;
+      case GST_VIDEOFLIP_METHOD_IDENTITY:
+
+        break;
+      case GST_VIDEOFLIP_METHOD_180:
+      case GST_VIDEOFLIP_METHOD_HORIZ:
+      case GST_VIDEOFLIP_METHOD_VERT:
+        if ((vf->from_width != vf->to_width) ||
+            (vf->from_height != vf->to_height)) {
+          GST_DEBUG_OBJECT (vf, "we are keeping width and height but caps "
+              "are not correct : %dx%d to %dx%d", vf->from_width,
+              vf->from_height, vf->to_width, vf->to_height);
+          goto beach;
+        }
+        break;
+      default:
+        g_assert_not_reached ();
+        break;
+    }
+  }
 
-  if (!videoflip_type) {
-    static const GTypeInfo videoflip_info = {
-      sizeof (GstVideoflipClass),
-      gst_videoflip_base_init,
-      NULL,
-      gst_videoflip_class_init,
-      NULL,
-      NULL,
-      sizeof (GstVideoflip),
-      0,
-      gst_videoflip_init,
-    };
+  ret = TRUE;
 
-    videoflip_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
-        "GstVideoflip", &videoflip_info, 0);
+beach:
+  return ret;
+}
+
+static GstCaps *
+gst_videoflip_transform_caps (GstBaseTransform * trans,
+    GstPadDirection direction, GstCaps * caps)
+{
+  GstVideoflip *videoflip;
+  GstCaps *ret;
+  gint width, height, i;
+
+  videoflip = GST_VIDEOFLIP (trans);
+
+  ret = gst_caps_copy (caps);
+
+  for (i = 0; i < gst_caps_get_size (ret); i++) {
+    GstStructure *structure = gst_caps_get_structure (ret, i);
+
+    if (gst_structure_get_int (structure, "width", &width) &&
+        gst_structure_get_int (structure, "height", &height)) {
+
+      switch (videoflip->method) {
+        case GST_VIDEOFLIP_METHOD_90R:
+        case GST_VIDEOFLIP_METHOD_90L:
+        case GST_VIDEOFLIP_METHOD_TRANS:
+        case GST_VIDEOFLIP_METHOD_OTHER:
+          gst_structure_set (structure, "width", G_TYPE_INT, height,
+              "height", G_TYPE_INT, width, NULL);
+          break;
+        case GST_VIDEOFLIP_METHOD_IDENTITY:
+        case GST_VIDEOFLIP_METHOD_180:
+        case GST_VIDEOFLIP_METHOD_HORIZ:
+        case GST_VIDEOFLIP_METHOD_VERT:
+          gst_structure_set (structure, "width", G_TYPE_INT, width,
+              "height", G_TYPE_INT, height, NULL);
+          break;
+        default:
+          g_assert_not_reached ();
+          break;
+      }
+    }
   }
-  return videoflip_type;
+
+  GST_DEBUG_OBJECT (videoflip, "transformed %" GST_PTR_FORMAT " to %"
+      GST_PTR_FORMAT, caps, ret);
+
+  return ret;
 }
 
-static GstVideofilterFormat gst_videoflip_formats[] = {
-  /* planar */
-  {"YV12", 12, gst_videoflip_planar411,},
-  {"I420", 12, gst_videoflip_planar411,},
-  {"IYUV", 12, gst_videoflip_planar411,},
-};
+/* Useful macros */
+#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
+#define GST_VIDEO_I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
+#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2)
 
-static void
-gst_videoflip_base_init (gpointer g_class)
+#define GST_VIDEO_I420_Y_OFFSET(w,h) (0)
+#define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
+#define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
+
+#define GST_VIDEO_I420_SIZE(w,h)     (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
+
+static gboolean
+gst_videoflip_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
+    guint * size)
 {
-  static GstElementDetails videoflip_details =
-      GST_ELEMENT_DETAILS ("Video Flipper",
-      "Filter/Effect/Video",
-      "Flips and rotates video",
-      "David Schleef <ds@schleef.org>");
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-  GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
-  int i;
+  GstVideoflip *videoflip;
+  GstStructure *structure;
+  gboolean ret = FALSE;
+  gint width, height;
 
-  gst_element_class_set_details (element_class, &videoflip_details);
+  videoflip = GST_VIDEOFLIP (btrans);
+
+  structure = gst_caps_get_structure (caps, 0);
 
-  for (i = 0; i < G_N_ELEMENTS (gst_videoflip_formats); i++) {
-    gst_videofilter_class_add_format (videofilter_class,
-        gst_videoflip_formats + i);
+  if (gst_structure_get_int (structure, "width", &width) &&
+      gst_structure_get_int (structure, "height", &height)) {
+    *size = GST_VIDEO_I420_SIZE (width, height);
+    ret = TRUE;
+    GST_DEBUG_OBJECT (videoflip, "our frame size is %d bytes (%dx%d)", *size,
+        width, height);
   }
 
-  gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class));
+  return ret;
 }
 
-static void
-gst_videoflip_class_init (gpointer g_class, gpointer class_data)
+static GstFlowReturn
+gst_videoflip_flip (GstVideoflip * videoflip, unsigned char *dest,
+    unsigned char *src, int sw, int sh, int dw, int dh)
 {
-  GObjectClass *gobject_class;
-  GstVideofilterClass *videofilter_class;
+  GstFlowReturn ret = GST_FLOW_OK;
+  int x, y;
+
+  switch (videoflip->method) {
+    case GST_VIDEOFLIP_METHOD_90R:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[(sh - 1 - x) * sw + y];
+        }
+      }
+      break;
+    case GST_VIDEOFLIP_METHOD_90L:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[x * sw + (sw - 1 - y)];
+        }
+      }
+      break;
+    case GST_VIDEOFLIP_METHOD_180:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[(sh - 1 - y) * sw + (sw - 1 - x)];
+        }
+      }
+      break;
+    case GST_VIDEOFLIP_METHOD_HORIZ:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[y * sw + (sw - 1 - x)];
+        }
+      }
+      break;
+    case GST_VIDEOFLIP_METHOD_VERT:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[(sh - 1 - y) * sw + x];
+        }
+      }
+      break;
+    case GST_VIDEOFLIP_METHOD_TRANS:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[x * sw + y];
+        }
+      }
+      break;
+    case GST_VIDEOFLIP_METHOD_OTHER:
+      for (y = 0; y < dh; y++) {
+        for (x = 0; x < dw; x++) {
+          dest[y * dw + x] = src[(sh - 1 - x) * sw + (sw - 1 - y)];
+        }
+      }
+      break;
+    default:
+      ret = GST_FLOW_ERROR;
+      break;
+  }
 
-  gobject_class = G_OBJECT_CLASS (g_class);
-  videofilter_class = GST_VIDEOFILTER_CLASS (g_class);
+  return ret;
+}
 
-  gobject_class->set_property = gst_videoflip_set_property;
-  gobject_class->get_property = gst_videoflip_get_property;
+static GstFlowReturn
+gst_videoflip_transform (GstBaseTransform * trans, GstBuffer * in,
+    GstBuffer * out)
+{
+  GstVideoflip *videoflip;
+  gpointer dest, src;
+  int sw, sh, dw, dh;
+  GstFlowReturn ret = GST_FLOW_OK;
 
-  g_object_class_install_property (gobject_class, ARG_METHOD,
-      g_param_spec_enum ("method", "method", "method",
-          GST_TYPE_VIDEOFLIP_METHOD, GST_VIDEOFLIP_METHOD_90R,
-          G_PARAM_READWRITE));
+  videoflip = GST_VIDEOFLIP (trans);
+
+  gst_buffer_stamp (out, in);
+
+  src = GST_BUFFER_DATA (in);
+  dest = GST_BUFFER_DATA (out);
+  sw = videoflip->from_width;
+  sh = videoflip->from_height;
+  dw = videoflip->to_width;
+  dh = videoflip->to_height;
+
+  GST_LOG_OBJECT (videoflip, "videoflip: scaling planar 4:1:1 %dx%d to %dx%d",
+      sw, sh, dw, dh);
+
+  ret = gst_videoflip_flip (videoflip, dest, src, sw, sh, dw, dh);
+  if (ret != GST_FLOW_OK)
+    goto beach;
+
+  src += sw * sh;
+  dest += dw * dh;
+
+  dh = dh >> 1;
+  dw = dw >> 1;
+  sh = sh >> 1;
+  sw = sw >> 1;
 
-  videofilter_class->setup = gst_videoflip_setup;
+  ret = gst_videoflip_flip (videoflip, dest, src, sw, sh, dw, dh);
+  if (ret != GST_FLOW_OK)
+    goto beach;
+
+  src += sw * sh;
+  dest += dw * dh;
+
+  ret = gst_videoflip_flip (videoflip, dest, src, sw, sh, dw, dh);
+
+beach:
+  return ret;
 }
 
-static void
-gst_videoflip_init (GTypeInstance * instance, gpointer g_class)
+static gboolean
+gst_videoflip_handle_src_event (GstPad * pad, GstEvent * event)
 {
-  GstVideoflip *videoflip = GST_VIDEOFLIP (instance);
-  GstVideofilter *videofilter;
+  GstVideoflip *vf;
+  gboolean ret;
+  gdouble x, y;
+  GstStructure *structure;
+
+  vf = GST_VIDEOFLIP (gst_pad_get_parent (pad));
+
+  GST_DEBUG_OBJECT (vf, "handling %s event", GST_EVENT_TYPE_NAME (event));
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_NAVIGATION:
+      event =
+          GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
+
+      structure = (GstStructure *) gst_event_get_structure (event);
+      if (gst_structure_get_double (structure, "pointer_x", &x) &&
+          gst_structure_get_double (structure, "pointer_y", &y)) {
+        switch (vf->method) {
+          case GST_VIDEOFLIP_METHOD_90R:
+          case GST_VIDEOFLIP_METHOD_OTHER:
+            x = y;
+            y = vf->to_width - x;
+            break;
+          case GST_VIDEOFLIP_METHOD_90L:
+          case GST_VIDEOFLIP_METHOD_TRANS:
+            x = vf->to_height - y;
+            y = x;
+            break;
+          case GST_VIDEOFLIP_METHOD_180:
+            x = vf->to_width - x;
+            y = vf->to_height - y;
+            break;
+          case GST_VIDEOFLIP_METHOD_HORIZ:
+            x = vf->to_width - x;
+            y = y;
+            break;
+          case GST_VIDEOFLIP_METHOD_VERT:
+            x = x;
+            y = vf->to_height - y;
+            break;
+          default:
+            x = x;
+            y = y;
+            break;
+        }
+        gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, x,
+            "pointer_y", G_TYPE_DOUBLE, y, NULL);
+      }
+      break;
+    default:
+      break;
+  }
 
-  GST_DEBUG_OBJECT (videoflip, "gst_videoflip_init");
+  ret = gst_pad_event_default (pad, event);
 
-  videofilter = GST_VIDEOFILTER (videoflip);
+  gst_object_unref (vf);
 
-  /* do stuff */
+  return ret;
 }
 
 static void
@@ -186,16 +417,25 @@ gst_videoflip_set_property (GObject * object, guint prop_id,
   videoflip = GST_VIDEOFLIP (object);
   videofilter = GST_VIDEOFILTER (object);
 
-  GST_DEBUG_OBJECT (videoflip, "gst_videoflip_set_property");
   switch (prop_id) {
     case ARG_METHOD:
-      videoflip->method = g_value_get_enum (value);
-      if (videofilter->inited) {
-        GST_DEBUG_OBJECT (videoflip, "setting up videoflip again");
-        gst_videofilter_setup (videofilter);
+    {
+      GstVideoflipMethod method;
+
+      method = g_value_get_enum (value);
+      if (method != videoflip->method) {
+        GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
+
+        g_mutex_lock (btrans->transform_lock);
+        gst_pad_set_caps (btrans->sinkpad, NULL);
+        gst_pad_set_caps (btrans->srcpad, NULL);
+        g_mutex_unlock (btrans->transform_lock);
+        videoflip->method = method;
       }
+    }
       break;
     default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
   }
 }
@@ -219,167 +459,94 @@ gst_videoflip_get_property (GObject * object, guint prop_id, GValue * value,
   }
 }
 
-static gboolean
-plugin_init (GstPlugin * plugin)
+static void
+gst_videoflip_base_init (gpointer g_class)
 {
-  GST_DEBUG_CATEGORY_INIT (gst_videoflip_debug, "videoflip", 0, "videoflip");
-
-  return gst_element_register (plugin, "videoflip", GST_RANK_NONE,
-      GST_TYPE_VIDEOFLIP);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
-    GST_VERSION_MINOR,
-    "videoflip",
-    "Flips and rotates video",
-    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
 
-static void gst_videoflip_flip (GstVideoflip * videoflip,
-    unsigned char *dest, unsigned char *src, int sw, int sh, int dw, int dh);
+  gst_element_class_set_details (element_class, &videoflip_details);
 
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_videoflip_sink_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_videoflip_src_template));
+}
 
 static void
-gst_videoflip_setup (GstVideofilter * videofilter)
+gst_videoflip_class_init (gpointer klass, gpointer class_data)
 {
-  int from_width, from_height;
-  GstVideoflip *videoflip;
-
-  videoflip = GST_VIDEOFLIP (videofilter);
-  GST_DEBUG_OBJECT (videoflip, "gst_videoflip_setup");
+  GObjectClass *gobject_class;
+  GstBaseTransformClass *trans_class;
 
-  from_width = gst_videofilter_get_input_width (videofilter);
-  from_height = gst_videofilter_get_input_height (videofilter);
+  gobject_class = (GObjectClass *) klass;
+  trans_class = (GstBaseTransformClass *) klass;
 
-  if (from_width == 0 || from_height == 0) {
-    return;
-  }
+  parent_class = g_type_class_peek_parent (klass);
 
-  switch (videoflip->method) {
-    case GST_VIDEOFLIP_METHOD_90R:
-    case GST_VIDEOFLIP_METHOD_90L:
-    case GST_VIDEOFLIP_METHOD_TRANS:
-    case GST_VIDEOFLIP_METHOD_OTHER:
-      gst_videofilter_set_output_size (videofilter, from_height, from_width);
-      break;
-    case GST_VIDEOFLIP_METHOD_IDENTITY:
-    case GST_VIDEOFLIP_METHOD_180:
-    case GST_VIDEOFLIP_METHOD_HORIZ:
-    case GST_VIDEOFLIP_METHOD_VERT:
-      gst_videofilter_set_output_size (videofilter, from_width, from_height);
-      break;
-    default:
-      g_assert_not_reached ();
-      break;
-  }
+  gobject_class->set_property = gst_videoflip_set_property;
+  gobject_class->get_property = gst_videoflip_get_property;
 
-  GST_DEBUG_OBJECT (videoflip, "format=%p \"%s\" from %dx%d to %dx%d",
-      videofilter->format, videofilter->format->fourcc,
-      from_width, from_height, videofilter->to_width, videofilter->to_height);
+  g_object_class_install_property (gobject_class, ARG_METHOD,
+      g_param_spec_enum ("method", "method", "method",
+          GST_TYPE_VIDEOFLIP_METHOD, GST_VIDEOFLIP_METHOD_90R,
+          G_PARAM_READWRITE));
 
-  if (videoflip->method == GST_VIDEOFLIP_METHOD_IDENTITY) {
-    GST_DEBUG_OBJECT (videoflip, "videoflip: using passthru");
-    videofilter->passthru = TRUE;
-  } else {
-    videofilter->passthru = FALSE;
-  }
+  trans_class->transform_caps =
+      GST_DEBUG_FUNCPTR (gst_videoflip_transform_caps);
+  trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_videoflip_set_caps);
+  trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_videoflip_get_unit_size);
+  trans_class->transform = GST_DEBUG_FUNCPTR (gst_videoflip_transform);
 }
 
 static void
-gst_videoflip_planar411 (GstVideofilter * videofilter, void *dest, void *src)
+gst_videoflip_init (GTypeInstance * instance, gpointer g_class)
 {
-  GstVideoflip *videoflip;
-  int sw;
-  int sh;
-  int dw;
-  int dh;
-
-  g_return_if_fail (GST_IS_VIDEOFLIP (videofilter));
-  videoflip = GST_VIDEOFLIP (videofilter);
-
-  sw = videofilter->from_width;
-  sh = videofilter->from_height;
-  dw = videofilter->to_width;
-  dh = videofilter->to_height;
-
-  GST_LOG_OBJECT (videoflip, "videoflip: scaling planar 4:1:1 %dx%d to %dx%d",
-      sw, sh, dw, dh);
-
-  gst_videoflip_flip (videoflip, dest, src, sw, sh, dw, dh);
+  GstVideoflip *videoflip = GST_VIDEOFLIP (instance);
+  GstBaseTransform *btrans = GST_BASE_TRANSFORM (instance);
 
-  src += sw * sh;
-  dest += dw * dh;
+  GST_DEBUG_OBJECT (videoflip, "gst_videoflip_init");
 
-  dh = dh >> 1;
-  dw = dw >> 1;
-  sh = sh >> 1;
-  sw = sw >> 1;
+  videoflip->method = GST_VIDEOFLIP_METHOD_90R;
 
-  gst_videoflip_flip (videoflip, dest, src, sw, sh, dw, dh);
+  gst_pad_set_event_function (btrans->srcpad,
+      GST_DEBUG_FUNCPTR (gst_videoflip_handle_src_event));
+}
 
-  src += sw * sh;
-  dest += dw * dh;
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (videoflip_debug, "videoflip", 0, "videoflip");
 
-  gst_videoflip_flip (videoflip, dest, src, sw, sh, dw, dh);
+  return gst_element_register (plugin, "videoflip", GST_RANK_NONE,
+      GST_TYPE_VIDEOFLIP);
 }
 
-static void
-gst_videoflip_flip (GstVideoflip * videoflip, unsigned char *dest,
-    unsigned char *src, int sw, int sh, int dw, int dh)
+GType
+gst_videoflip_get_type (void)
 {
-  int x, y;
+  static GType videoflip_type = 0;
 
-  switch (videoflip->method) {
-    case GST_VIDEOFLIP_METHOD_90R:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[(sh - 1 - x) * sw + y];
-        }
-      }
-      break;
-    case GST_VIDEOFLIP_METHOD_90L:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[x * sw + (sw - 1 - y)];
-        }
-      }
-      break;
-    case GST_VIDEOFLIP_METHOD_180:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[(sh - 1 - y) * sw + (sw - 1 - x)];
-        }
-      }
-      break;
-    case GST_VIDEOFLIP_METHOD_HORIZ:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[y * sw + (sw - 1 - x)];
-        }
-      }
-      break;
-    case GST_VIDEOFLIP_METHOD_VERT:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[(sh - 1 - y) * sw + x];
-        }
-      }
-      break;
-    case GST_VIDEOFLIP_METHOD_TRANS:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[x * sw + y];
-        }
-      }
-      break;
-    case GST_VIDEOFLIP_METHOD_OTHER:
-      for (y = 0; y < dh; y++) {
-        for (x = 0; x < dw; x++) {
-          dest[y * dw + x] = src[(sh - 1 - x) * sw + (sw - 1 - y)];
-        }
-      }
-      break;
-    default:
-      /* FIXME */
-      break;
+  if (!videoflip_type) {
+    static const GTypeInfo videoflip_info = {
+      sizeof (GstVideoflipClass),
+      gst_videoflip_base_init,
+      NULL,
+      gst_videoflip_class_init,
+      NULL,
+      NULL,
+      sizeof (GstVideoflip),
+      0,
+      gst_videoflip_init,
+    };
+
+    videoflip_type = g_type_register_static (GST_TYPE_VIDEOFILTER,
+        "GstVideoflip", &videoflip_info, 0);
   }
+  return videoflip_type;
 }
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "videoflip",
+    "Flips and rotates video",
+    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);