cairo: remove old cairo-based text renderering element

They haven't worked well or at all in a very long time
and were rather bit-rotten, and there's no need for them
any more.

8 files changed, 0 insertions, 1977 deletions

diff --git a/ext/cairo/Makefile.am b/ext/cairo/Makefile.am
index acdbd3352..fac51f6d9 100644
--- a/ext/cairo/Makefile.am
+++ b/ext/cairo/Makefile.am
@@ -1,13 +1,5 @@
 plugin_LTLIBRARIES = libgstcairo.la
 
-# we probably don't really want to port these
-#	gsttimeoverlay.h
-#	gsttextoverlay.h
-#	gstcairorender.h
-#	gsttimeoverlay.c
-#	gsttextoverlay.c
-#	gstcairorender.c
-
 noinst_HEADERS = \
 	gstcairooverlay.h
 libgstcairo_la_SOURCES = \
diff --git a/ext/cairo/gstcairo.c b/ext/cairo/gstcairo.c
index 95f0f6e9b..5b9438740 100644
--- a/ext/cairo/gstcairo.c
+++ b/ext/cairo/gstcairo.c
@@ -22,12 +22,6 @@
 #include "config.h"
 #endif
 
-#if 0
-#include <gsttimeoverlay.h>
-#include <gsttextoverlay.h>
-#include <gstcairorender.h>
-#endif
-
 #include <gstcairooverlay.h>
 
 #include <string.h>
@@ -38,16 +32,6 @@ GST_DEBUG_CATEGORY (cairo_debug);
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-#if 0
-  /* we probably don't want to port these */
-  gst_element_register (plugin, "cairotextoverlay", GST_RANK_NONE,
-      GST_TYPE_CAIRO_TEXT_OVERLAY);
-  gst_element_register (plugin, "cairotimeoverlay", GST_RANK_NONE,
-      GST_TYPE_CAIRO_TIME_OVERLAY);
-  gst_element_register (plugin, "cairorender", GST_RANK_SECONDARY,
-      GST_TYPE_CAIRO_RENDER);
-#endif
-
   gst_element_register (plugin, "cairooverlay", GST_RANK_NONE,
       GST_TYPE_CAIRO_OVERLAY);
 
diff --git a/ext/cairo/gstcairorender.c b/ext/cairo/gstcairorender.c
deleted file mode 100644
index f0bbc09c0..000000000
--- a/ext/cairo/gstcairorender.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/* GStreamer
- *
- * Copyright (C) 2006-2009 Lutz Mueller <lutz@topfrose.de>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-/**
- * SECTION:element-cairorender
- *
- * cairorender encodes a video stream into PDF, SVG, PNG or Postscript
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch-1.0 videotestsrc num-buffers=3 ! cairorender ! "application/pdf" ! filesink location=test.pdf
- * ]|
- * </refsect2>
- */
-
-#include "gstcairorender.h"
-
-#include <cairo.h>
-#include <cairo-features.h>
-#ifdef CAIRO_HAS_PS_SURFACE
-#include <cairo-ps.h>
-#endif
-#ifdef CAIRO_HAS_PDF_SURFACE
-#include <cairo-pdf.h>
-#endif
-#ifdef CAIRO_HAS_SVG_SURFACE
-#include <cairo-svg.h>
-#endif
-
-#include <gst/video/video.h>
-
-#include <string.h>
-
-GST_DEBUG_CATEGORY_STATIC (cairo_render_debug);
-#define GST_CAT_DEFAULT cairo_render_debug
-
-static gboolean
-gst_cairo_render_event (GstPad * pad, GstEvent * e)
-{
-  GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
-
-  switch (GST_EVENT_TYPE (e)) {
-    case GST_EVENT_EOS:
-      if (c->surface)
-        cairo_surface_finish (c->surface);
-      break;
-    default:
-      break;
-  }
-  return gst_pad_event_default (pad, e);
-}
-
-static cairo_status_t
-write_func (void *closure, const unsigned char *data, unsigned int length)
-{
-  GstCairoRender *c = GST_CAIRO_RENDER (closure);
-  GstBuffer *buf;
-  GstFlowReturn r;
-
-  buf = gst_buffer_new ();
-  gst_buffer_set_data (buf, (guint8 *) data, length);
-  gst_buffer_set_caps (buf, GST_PAD_CAPS (c->src));
-  if ((r = gst_pad_push (c->src, buf)) != GST_FLOW_OK) {
-    GST_DEBUG_OBJECT (c, "Could not pass on buffer: %s.",
-        gst_flow_get_name (r));
-    return CAIRO_STATUS_WRITE_ERROR;
-  }
-  return CAIRO_STATUS_SUCCESS;
-}
-
-static cairo_status_t
-read_buffer (void *closure, unsigned char *data, unsigned int length)
-{
-  GstBuffer *buf = GST_BUFFER (closure);
-
-  if (GST_BUFFER_OFFSET (buf) + length > GST_BUFFER_SIZE (buf))
-    return CAIRO_STATUS_READ_ERROR;
-  memcpy (data, GST_BUFFER_DATA (buf) + GST_BUFFER_OFFSET (buf), length);
-  GST_BUFFER_OFFSET (buf) += length;
-  return CAIRO_STATUS_SUCCESS;
-}
-
-static gboolean
-gst_cairo_render_push_surface (GstCairoRender * c, cairo_surface_t * surface)
-{
-  cairo_status_t s = 0;
-  cairo_t *cr;
-
-  if (!c->surface) {
-    s = cairo_surface_write_to_png_stream (surface, write_func, c);
-    cairo_surface_destroy (surface);
-    if (s != CAIRO_STATUS_SUCCESS) {
-      GST_DEBUG_OBJECT (c, "Could not create PNG stream: %s.",
-          cairo_status_to_string (s));
-      return FALSE;
-    }
-    return TRUE;
-  }
-
-  cr = cairo_create (c->surface);
-  cairo_set_source_surface (cr, surface, 0, 0);
-  cairo_paint (cr);
-  cairo_show_page (cr);
-  cairo_destroy (cr);
-  cairo_surface_destroy (surface);
-  return (TRUE);
-}
-
-static GstFlowReturn
-gst_cairo_render_chain (GstPad * pad, GstBuffer * buf)
-{
-  GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
-  cairo_surface_t *s;
-  gboolean success;
-
-  if (G_UNLIKELY (c->width <= 0 || c->height <= 0 || c->stride <= 0))
-    return GST_FLOW_NOT_NEGOTIATED;
-
-  if (c->png) {
-    GST_BUFFER_OFFSET (buf) = 0;
-    s = cairo_image_surface_create_from_png_stream (read_buffer, buf);
-  } else {
-    if (c->format == CAIRO_FORMAT_ARGB32) {
-      guint i, j;
-      guint8 *data = GST_BUFFER_DATA (buf);
-
-      buf = gst_buffer_make_writable (buf);
-
-      /* Cairo ARGB is pre-multiplied with the alpha
-       * value, i.e. 0x80008000 is half transparent
-       * green
-       */
-      for (i = 0; i < c->height; i++) {
-        for (j = 0; j < c->width; j++) {
-#if G_BYTE_ORDER == G_LITTLE_ENDIAN
-          guint8 alpha = data[3];
-
-          data[0] = (data[0] * alpha) >> 8;
-          data[1] = (data[1] * alpha) >> 8;
-          data[2] = (data[2] * alpha) >> 8;
-#else
-          guint8 alpha = data[0];
-
-          data[1] = (data[1] * alpha) >> 8;
-          data[2] = (data[2] * alpha) >> 8;
-          data[3] = (data[3] * alpha) >> 8;
-#endif
-          data += 4;
-        }
-      }
-    }
-
-    s = cairo_image_surface_create_for_data (GST_BUFFER_DATA (buf),
-        c->format, c->width, c->height, c->stride);
-  }
-
-  success = gst_cairo_render_push_surface (c, s);
-  gst_buffer_unref (buf);
-  return success ? GST_FLOW_OK : GST_FLOW_ERROR;
-}
-
-static gboolean
-gst_cairo_render_setcaps_sink (GstPad * pad, GstCaps * caps)
-{
-  GstCairoRender *c = GST_CAIRO_RENDER (GST_PAD_PARENT (pad));
-  GstStructure *s = gst_caps_get_structure (caps, 0);
-  const gchar *mime = gst_structure_get_name (s);
-  gint fps_n = 0, fps_d = 1;
-  gint w, h;
-
-  GST_DEBUG_OBJECT (c, "Got caps (%s).", mime);
-  if ((c->png = !strcmp (mime, "image/png")))
-    return TRUE;
-
-  /* Width and height */
-  if (!gst_structure_get_int (s, "width", &c->width) ||
-      !gst_structure_get_int (s, "height", &c->height)) {
-    GST_ERROR_OBJECT (c, "Invalid caps");
-    return FALSE;
-  }
-
-  /* Colorspace */
-  if (!strcmp (mime, "video/x-raw-yuv") || !strcmp (mime, "video/x-raw-grey")) {
-    c->format = CAIRO_FORMAT_A8;
-    c->stride = GST_ROUND_UP_4 (c->width);
-  } else if (!strcmp (mime, "video/x-raw-rgb")) {
-    gint bpp;
-
-    if (!gst_structure_get_int (s, "bpp", &bpp)) {
-      GST_ERROR_OBJECT (c, "Invalid caps");
-      return FALSE;
-    }
-
-    c->format = (bpp == 32) ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24;
-    c->stride = 4 * c->width;
-  } else {
-    GST_DEBUG_OBJECT (c, "Unknown mime type '%s'.", mime);
-    return FALSE;
-  }
-
-  /* Framerate */
-  gst_structure_get_fraction (s, "framerate", &fps_n, &fps_d);
-
-  /* Create output caps */
-  caps = gst_pad_get_allowed_caps (c->src);
-  caps = gst_caps_make_writable (caps);
-  gst_caps_truncate (caps);
-  s = gst_caps_get_structure (caps, 0);
-  mime = gst_structure_get_name (s);
-  gst_structure_set (s, "height", G_TYPE_INT, c->height, "width", G_TYPE_INT,
-      c->width, "framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
-
-  if (c->surface) {
-    cairo_surface_destroy (c->surface);
-    c->surface = NULL;
-  }
-
-  w = c->width;
-  h = c->height;
-
-  GST_DEBUG_OBJECT (c, "Setting src caps %" GST_PTR_FORMAT, caps);
-  gst_pad_set_caps (c->src, caps);
-
-#if CAIRO_HAS_PS_SURFACE
-  if (!strcmp (mime, "application/postscript")) {
-    c->surface = cairo_ps_surface_create_for_stream (write_func, c, w, h);
-  } else
-#endif
-#if CAIRO_HAS_PDF_SURFACE
-  if (!strcmp (mime, "application/pdf")) {
-    c->surface = cairo_pdf_surface_create_for_stream (write_func, c, w, h);
-  } else
-#endif
-#if CAIRO_HAS_SVG_SURFACE
-  if (!strcmp (mime, "image/svg+xml")) {
-    c->surface = cairo_svg_surface_create_for_stream (write_func, c, w, h);
-  } else
-#endif
-  {
-    gst_caps_unref (caps);
-    return FALSE;
-  }
-
-  gst_caps_unref (caps);
-
-  return TRUE;
-}
-
-
-#define SIZE_CAPS "width = (int) [ 1, MAX], height = (int) [ 1, MAX] "
-#if CAIRO_HAS_PDF_SURFACE
-#define PDF_CAPS "application/pdf, " SIZE_CAPS
-#else
-#define PDF_CAPS
-#endif
-#if CAIRO_HAS_PDF_SURFACE && (CAIRO_HAS_PS_SURFACE || CAIRO_HAS_SVG_SURFACE || CAIRO_HAS_PNG_FUNCTIONS)
-#define JOIN1 ";"
-#else
-#define JOIN1
-#endif
-#if CAIRO_HAS_PS_SURFACE
-#define PS_CAPS "application/postscript, " SIZE_CAPS
-#else
-#define PS_CAPS
-#endif
-#if (CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE) && (CAIRO_HAS_SVG_SURFACE || CAIRO_HAS_PNG_FUNCTIONS)
-#define JOIN2 ";"
-#else
-#define JOIN2
-#endif
-#if CAIRO_HAS_SVG_SURFACE
-#define SVG_CAPS "image/svg+xml, " SIZE_CAPS
-#else
-#define SVG_CAPS
-#endif
-#if (CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE || CAIRO_HAS_SVG_SURFACE) && CAIRO_HAS_PNG_FUNCTIONS
-#define JOIN3 ";"
-#else
-#define JOIN3
-#endif
-#if CAIRO_HAS_PNG_FUNCTIONS
-#define PNG_CAPS "image/png, " SIZE_CAPS
-#define PNG_CAPS2 "; image/png, " SIZE_CAPS
-#else
-#define PNG_CAPS
-#define PNG_CAPS2
-#endif
-
-#if G_BYTE_ORDER == G_LITTLE_ENDIAN
-#define ARGB_CAPS GST_VIDEO_CAPS_BGRx " ; " GST_VIDEO_CAPS_BGRA " ; "
-#else
-#define ARGB_CAPS GST_VIDEO_CAPS_xRGB " ; " GST_VIDEO_CAPS_ARGB " ; "
-#endif
-static GstStaticPadTemplate t_src = GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC, GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (PDF_CAPS JOIN1 PS_CAPS JOIN2 SVG_CAPS JOIN3 PNG_CAPS));
-static GstStaticPadTemplate t_snk = GST_STATIC_PAD_TEMPLATE ("sink",
-    GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (ARGB_CAPS
-        GST_VIDEO_CAPS_YUV ("Y800") " ; "
-        "video/x-raw-gray, "
-        "bpp = 8, "
-        "depth = 8, "
-        "width = " GST_VIDEO_SIZE_RANGE ", "
-        "height = " GST_VIDEO_SIZE_RANGE ", " "framerate = " GST_VIDEO_FPS_RANGE
-        PNG_CAPS2));
-
-GST_BOILERPLATE (GstCairoRender, gst_cairo_render, GstElement,
-    GST_TYPE_ELEMENT);
-
-static void
-gst_cairo_render_init (GstCairoRender * c, GstCairoRenderClass * klass)
-{
-  /* The sink */
-  c->snk = gst_pad_new_from_static_template (&t_snk, "sink");
-  gst_pad_set_event_function (c->snk, gst_cairo_render_event);
-  gst_pad_set_chain_function (c->snk, gst_cairo_render_chain);
-  gst_pad_set_setcaps_function (c->snk, gst_cairo_render_setcaps_sink);
-  gst_pad_use_fixed_caps (c->snk);
-  gst_element_add_pad (GST_ELEMENT (c), c->snk);
-
-  /* The source */
-  c->src = gst_pad_new_from_static_template (&t_src, "src");
-  gst_pad_use_fixed_caps (c->src);
-  gst_element_add_pad (GST_ELEMENT (c), c->src);
-
-  c->width = 0;
-  c->height = 0;
-  c->stride = 0;
-}
-
-static void
-gst_cairo_render_base_init (gpointer g_class)
-{
-  GstElementClass *ec = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_set_static_metadata (ec, "Cairo encoder",
-      "Codec/Encoder", "Encodes streams using Cairo",
-      "Lutz Mueller <lutz@topfrose.de>");
-  gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t_snk));
-  gst_element_class_add_pad_template (ec, gst_static_pad_template_get (&t_src));
-}
-
-static void
-gst_cairo_render_finalize (GObject * object)
-{
-  GstCairoRender *c = GST_CAIRO_RENDER (object);
-
-  if (c->surface) {
-    cairo_surface_destroy (c->surface);
-    c->surface = NULL;
-  }
-
-  G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_cairo_render_class_init (GstCairoRenderClass * klass)
-{
-  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
-
-  gobject_class->finalize = gst_cairo_render_finalize;
-
-  GST_DEBUG_CATEGORY_INIT (cairo_render_debug, "cairo_render", 0,
-      "Cairo encoder");
-}
diff --git a/ext/cairo/gstcairorender.h b/ext/cairo/gstcairorender.h
deleted file mode 100644
index 5edd211f5..000000000
--- a/ext/cairo/gstcairorender.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/* cairorender: CAIRO plugin for GStreamer
- * 
- * Copyright (C) 2006-2009 Lutz Mueller <lutz@topfrose.de>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#ifndef __GST_CAIRO_RENDER_H_
-#define __GST_CAIRO_RENDER_H__
-
-#include <gst/gst.h>
-#include <cairo.h>
-
-G_BEGIN_DECLS
-
-#define GST_TYPE_CAIRO_RENDER         (gst_cairo_render_get_type())
-#define GST_CAIRO_RENDER(obj)         (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAIRO_RENDER,GstCairoRender))
-#define GST_CAIRO_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAIRO_RENDER,GstCairoRenderClass))
-
-typedef struct _GstCairoRender      GstCairoRender;
-typedef struct _GstCairoRenderClass GstCairoRenderClass;
-
-struct _GstCairoRender
-{
-  GstElement parent;
-
-  GstPad *snk, *src;
-
-  /* < private > */
-
-  /* Source */
-  cairo_surface_t *surface;
-  gint width, height, stride;
-
-  /* Sink */
-  gint64 offset, duration;
-  gboolean png;
-  cairo_format_t format;
-};
-
-struct _GstCairoRenderClass
-{
-  GstElementClass parent_class;
-};
-
-GType gst_cairo_render_get_type (void) G_GNUC_CONST;
-
-G_END_DECLS
-
-#endif /* __GST_CAIRO_RENDER_H__ */
diff --git a/ext/cairo/gsttextoverlay.c b/ext/cairo/gsttextoverlay.c
deleted file mode 100644
index 5e6860960..000000000
--- a/ext/cairo/gsttextoverlay.c
+++ /dev/null
@@ -1,1042 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- * Copyright (C) <2003> David Schleef <ds@schleef.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-/**
- * SECTION:element-cairotextoverlay
- *
- * cairotextoverlay renders the text on top of the video frames.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch-1.0 videotestsrc ! cairotextoverlay text="hello" ! autovideosink
- * ]|
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <string.h>
-#include <gst/video/video.h>
-#include "gsttextoverlay.h"
-
-#include <cairo.h>
-
-/* FIXME:
- *   - calculating the position of the shading rectangle is 
- *     not really right (try with text "L"), to say the least.
- *     Seems to work at least with latin script though.
- *   - check final x/y position and text width/height so that
- *     we don't do out-of-memory access when blitting the text.
- *     Also, we do not want to blit over the right or left margin.
- *   - what about text with newline characters? Cairo doesn't deal
- *     with that (we'd need to fix text_height usage for that as well)
- *   - upstream caps renegotiation, ie. when video window gets resized
- */
-
-GST_DEBUG_CATEGORY_EXTERN (cairo_debug);
-#define GST_CAT_DEFAULT cairo_debug
-
-enum
-{
-  ARG_0,
-  ARG_TEXT,
-  ARG_SHADING,
-  ARG_VALIGN,
-  ARG_HALIGN,
-  ARG_XPAD,
-  ARG_YPAD,
-  ARG_DELTAX,
-  ARG_DELTAY,
-  ARG_SILENT,
-  ARG_FONT_DESC
-};
-
-#define DEFAULT_YPAD 25
-#define DEFAULT_XPAD 25
-#define DEFAULT_FONT "sans"
-#define DEFAULT_SILENT FALSE
-
-#define GST_CAIRO_TEXT_OVERLAY_DEFAULT_SCALE   20.0
-
-static GstStaticPadTemplate cairo_text_overlay_src_template_factory =
-GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-    );
-
-static GstStaticPadTemplate video_sink_template_factory =
-GST_STATIC_PAD_TEMPLATE ("video_sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-    );
-
-static GstStaticPadTemplate text_sink_template_factory =
-GST_STATIC_PAD_TEMPLATE ("text_sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("text/plain")
-    );
-
-static void gst_text_overlay_set_property (GObject * object,
-    guint prop_id, const GValue * value, GParamSpec * pspec);
-static GstStateChangeReturn gst_text_overlay_change_state (GstElement * element,
-    GstStateChange transition);
-static GstCaps *gst_text_overlay_getcaps (GstPad * pad);
-static gboolean gst_text_overlay_setcaps (GstPad * pad, GstCaps * caps);
-static GstPadLinkReturn gst_text_overlay_text_pad_linked (GstPad * pad,
-    GstPad * peer);
-static void gst_text_overlay_text_pad_unlinked (GstPad * pad);
-static GstFlowReturn gst_text_overlay_collected (GstCollectPads * pads,
-    gpointer data);
-static void gst_text_overlay_finalize (GObject * object);
-static void gst_text_overlay_font_init (GstCairoTextOverlay * overlay);
-static gboolean gst_text_overlay_src_event (GstPad * pad, GstEvent * event);
-static gboolean gst_text_overlay_video_event (GstPad * pad, GstEvent * event);
-
-/* These macros are adapted from videotestsrc.c */
-#define I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
-#define I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
-#define I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(I420_Y_ROWSTRIDE(width)))/2)
-
-#define I420_Y_OFFSET(w,h) (0)
-#define I420_U_OFFSET(w,h) (I420_Y_OFFSET(w,h)+(I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
-#define I420_V_OFFSET(w,h) (I420_U_OFFSET(w,h)+(I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
-
-#define I420_SIZE(w,h)     (I420_V_OFFSET(w,h)+(I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
-
-GST_BOILERPLATE (GstCairoTextOverlay, gst_text_overlay, GstElement,
-    GST_TYPE_ELEMENT);
-
-static void
-gst_text_overlay_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 (&cairo_text_overlay_src_template_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&video_sink_template_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&text_sink_template_factory));
-
-  gst_element_class_set_static_metadata (element_class, "Text overlay",
-      "Filter/Editor/Video",
-      "Adds text strings on top of a video buffer",
-      "David Schleef <ds@schleef.org>");
-}
-
-static void
-gst_text_overlay_class_init (GstCairoTextOverlayClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = (GObjectClass *) klass;
-  gstelement_class = (GstElementClass *) klass;
-
-  gobject_class->finalize = gst_text_overlay_finalize;
-  gobject_class->set_property = gst_text_overlay_set_property;
-
-  gstelement_class->change_state =
-      GST_DEBUG_FUNCPTR (gst_text_overlay_change_state);
-
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TEXT,
-      g_param_spec_string ("text", "text",
-          "Text to be display.", "",
-          G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SHADING,
-      g_param_spec_boolean ("shaded-background", "shaded background",
-          "Whether to shade the background under the text area", FALSE,
-          G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VALIGN,
-      g_param_spec_string ("valign", "vertical alignment",
-          "Vertical alignment of the text. "
-          "Can be either 'baseline', 'bottom', or 'top'",
-          "baseline", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HALIGN,
-      g_param_spec_string ("halign", "horizontal alignment",
-          "Horizontal alignment of the text. "
-          "Can be either 'left', 'right', or 'center'",
-          "center", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_XPAD,
-      g_param_spec_int ("xpad", "horizontal paddding",
-          "Horizontal paddding when using left/right alignment",
-          G_MININT, G_MAXINT, DEFAULT_XPAD,
-          G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_YPAD,
-      g_param_spec_int ("ypad", "vertical padding",
-          "Vertical padding when using top/bottom alignment",
-          G_MININT, G_MAXINT, DEFAULT_YPAD,
-          G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DELTAX,
-      g_param_spec_int ("deltax", "X position modifier",
-          "Shift X position to the left or to the right. Unit is pixels.",
-          G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DELTAY,
-      g_param_spec_int ("deltay", "Y position modifier",
-          "Shift Y position up or down. Unit is pixels.",
-          G_MININT, G_MAXINT, 0, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FONT_DESC,
-      g_param_spec_string ("font-desc", "font description",
-          "Pango font description of font "
-          "to be used for rendering. "
-          "See documentation of "
-          "pango_font_description_from_string"
-          " for syntax.", "", G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-  /* FIXME 0.11: rename to "visible" or "text-visible" or "render-text" */
-  g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
-      g_param_spec_boolean ("silent", "silent",
-          "Whether to render the text string",
-          DEFAULT_SILENT, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-}
-
-static void
-gst_text_overlay_finalize (GObject * object)
-{
-  GstCairoTextOverlay *overlay = GST_CAIRO_TEXT_OVERLAY (object);
-
-  gst_collect_pads_stop (overlay->collect);
-  gst_object_unref (overlay->collect);
-
-  g_free (overlay->text_fill_image);
-  g_free (overlay->text_outline_image);
-
-  g_free (overlay->default_text);
-  g_free (overlay->font);
-
-  G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_text_overlay_init (GstCairoTextOverlay * overlay,
-    GstCairoTextOverlayClass * klass)
-{
-  /* video sink */
-  overlay->video_sinkpad =
-      gst_pad_new_from_static_template (&video_sink_template_factory,
-      "video_sink");
-  gst_pad_set_getcaps_function (overlay->video_sinkpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_getcaps));
-  gst_pad_set_setcaps_function (overlay->video_sinkpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_setcaps));
-  gst_element_add_pad (GST_ELEMENT (overlay), overlay->video_sinkpad);
-
-  /* text sink */
-  overlay->text_sinkpad =
-      gst_pad_new_from_static_template (&text_sink_template_factory,
-      "text_sink");
-  gst_pad_set_link_function (overlay->text_sinkpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_text_pad_linked));
-  gst_pad_set_unlink_function (overlay->text_sinkpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_text_pad_unlinked));
-  gst_element_add_pad (GST_ELEMENT (overlay), overlay->text_sinkpad);
-
-  /* (video) source */
-  overlay->srcpad =
-      gst_pad_new_from_static_template
-      (&cairo_text_overlay_src_template_factory, "src");
-  gst_pad_set_getcaps_function (overlay->srcpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_getcaps));
-  gst_pad_set_event_function (overlay->srcpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_src_event));
-  gst_element_add_pad (GST_ELEMENT (overlay), overlay->srcpad);
-
-  overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER;
-  overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE;
-  overlay->xpad = DEFAULT_XPAD;
-  overlay->ypad = DEFAULT_YPAD;
-  overlay->deltax = 0;
-  overlay->deltay = 0;
-
-  overlay->default_text = g_strdup ("");
-  overlay->need_render = TRUE;
-
-  overlay->font = g_strdup (DEFAULT_FONT);
-  gst_text_overlay_font_init (overlay);
-
-  overlay->silent = DEFAULT_SILENT;
-
-  overlay->fps_n = 0;
-  overlay->fps_d = 1;
-
-  overlay->collect = gst_collect_pads_new ();
-
-  gst_collect_pads_set_function (overlay->collect,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_collected), overlay);
-
-  overlay->video_collect_data = gst_collect_pads_add_pad (overlay->collect,
-      overlay->video_sinkpad, sizeof (GstCollectData), NULL, TRUE);
-
-  /* FIXME: hacked way to override/extend the event function of
-   * GstCollectPads; because it sets its own event function giving the
-   * element no access to events. Nicked from avimux. */
-  overlay->collect_event =
-      (GstPadEventFunction) GST_PAD_EVENTFUNC (overlay->video_sinkpad);
-  gst_pad_set_event_function (overlay->video_sinkpad,
-      GST_DEBUG_FUNCPTR (gst_text_overlay_video_event));
-
-  /* text pad will be added when it is linked */
-  overlay->text_collect_data = NULL;
-}
-
-static void
-gst_text_overlay_font_init (GstCairoTextOverlay * overlay)
-{
-  cairo_font_extents_t font_extents;
-  cairo_surface_t *surface;
-  cairo_t *cr;
-  gchar *font_desc, *sep;
-
-  font_desc = g_ascii_strdown (overlay->font, -1);
-
-  /* cairo_select_font_face() does not parse the size at the end, so we have
-   * to do that ourselves; same for slate and weight */
-  sep = MAX (strrchr (font_desc, ' '), strrchr (font_desc, ','));
-  if (sep != NULL && g_strtod (sep, NULL) > 0.0) {
-    /* there may be a suffix such as 'px', but we just ignore that for now */
-    overlay->scale = g_strtod (sep, NULL);
-  } else {
-    overlay->scale = GST_CAIRO_TEXT_OVERLAY_DEFAULT_SCALE;
-  }
-  if (strstr (font_desc, "bold"))
-    overlay->weight = CAIRO_FONT_WEIGHT_BOLD;
-  else
-    overlay->weight = CAIRO_FONT_WEIGHT_NORMAL;
-
-  if (strstr (font_desc, "italic"))
-    overlay->slant = CAIRO_FONT_SLANT_ITALIC;
-  else if (strstr (font_desc, "oblique"))
-    overlay->slant = CAIRO_FONT_SLANT_OBLIQUE;
-  else
-    overlay->slant = CAIRO_FONT_SLANT_NORMAL;
-
-  GST_LOG_OBJECT (overlay, "Font desc: '%s', scale=%f, weight=%d, slant=%d",
-      overlay->font, overlay->scale, overlay->weight, overlay->slant);
-
-  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 256, 256);
-  cr = cairo_create (surface);
-
-  cairo_select_font_face (cr, overlay->font, overlay->slant, overlay->weight);
-  cairo_set_font_size (cr, overlay->scale);
-
-  /* this has a static leak:
-   * http://lists.freedesktop.org/archives/cairo/2007-May/010623.html
-   */
-  cairo_font_extents (cr, &font_extents);
-  overlay->font_height = GST_ROUND_UP_2 ((guint) font_extents.height);
-  overlay->need_render = TRUE;
-
-  cairo_destroy (cr);
-  cairo_surface_destroy (surface);
-  g_free (font_desc);
-}
-
-static void
-gst_text_overlay_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstCairoTextOverlay *overlay = GST_CAIRO_TEXT_OVERLAY (object);
-
-  GST_OBJECT_LOCK (overlay);
-
-  switch (prop_id) {
-    case ARG_TEXT:{
-      g_free (overlay->default_text);
-      overlay->default_text = g_value_dup_string (value);
-      break;
-    }
-    case ARG_SHADING:{
-      overlay->want_shading = g_value_get_boolean (value);
-      break;
-    }
-    case ARG_VALIGN:{
-      const gchar *s = g_value_get_string (value);
-
-      if (g_ascii_strcasecmp (s, "baseline") == 0)
-        overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE;
-      else if (g_ascii_strcasecmp (s, "bottom") == 0)
-        overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_BOTTOM;
-      else if (g_ascii_strcasecmp (s, "top") == 0)
-        overlay->valign = GST_CAIRO_TEXT_OVERLAY_VALIGN_TOP;
-      else
-        g_warning ("Invalid 'valign' property value: %s", s);
-      break;
-    }
-    case ARG_HALIGN:{
-      const gchar *s = g_value_get_string (value);
-
-      if (g_ascii_strcasecmp (s, "left") == 0)
-        overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_LEFT;
-      else if (g_ascii_strcasecmp (s, "right") == 0)
-        overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_RIGHT;
-      else if (g_ascii_strcasecmp (s, "center") == 0)
-        overlay->halign = GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER;
-      else
-        g_warning ("Invalid 'halign' property value: %s", s);
-      break;
-    }
-    case ARG_XPAD:{
-      overlay->xpad = g_value_get_int (value);
-      break;
-    }
-    case ARG_YPAD:{
-      overlay->ypad = g_value_get_int (value);
-      break;
-    }
-    case ARG_DELTAX:{
-      overlay->deltax = g_value_get_int (value);
-      break;
-    }
-    case ARG_DELTAY:{
-      overlay->deltay = g_value_get_int (value);
-      break;
-    }
-    case ARG_FONT_DESC:{
-      g_free (overlay->font);
-      overlay->font = g_value_dup_string (value);
-      if (overlay->font == NULL)
-        overlay->font = g_strdup (DEFAULT_FONT);
-      gst_text_overlay_font_init (overlay);
-      break;
-    }
-    case ARG_SILENT:
-      overlay->silent = g_value_get_boolean (value);
-      break;
-    default:{
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-    }
-  }
-
-  overlay->need_render = TRUE;
-
-  GST_OBJECT_UNLOCK (overlay);
-}
-
-static void
-gst_text_overlay_render_text (GstCairoTextOverlay * overlay,
-    const gchar * text, gint textlen)
-{
-  cairo_text_extents_t extents;
-  cairo_surface_t *surface;
-  cairo_t *cr;
-  gchar *string;
-  double x, y;
-
-  if (overlay->silent) {
-    GST_DEBUG_OBJECT (overlay, "Silent mode, not rendering");
-    return;
-  }
-
-  if (textlen < 0)
-    textlen = strlen (text);
-
-  if (!overlay->need_render) {
-    GST_DEBUG ("Using previously rendered text.");
-    g_return_if_fail (overlay->text_fill_image != NULL);
-    g_return_if_fail (overlay->text_outline_image != NULL);
-    return;
-  }
-
-  string = g_strndup (text, textlen);
-  GST_DEBUG ("Rendering text '%s' on cairo RGBA surface", string);
-
-  overlay->text_fill_image =
-      g_realloc (overlay->text_fill_image,
-      4 * overlay->width * overlay->font_height);
-
-  surface = cairo_image_surface_create_for_data (overlay->text_fill_image,
-      CAIRO_FORMAT_ARGB32, overlay->width, overlay->font_height,
-      overlay->width * 4);
-
-  cr = cairo_create (surface);
-
-  cairo_select_font_face (cr, overlay->font, overlay->slant, overlay->weight);
-  cairo_set_font_size (cr, overlay->scale);
-
-  cairo_save (cr);
-  cairo_rectangle (cr, 0, 0, overlay->width, overlay->font_height);
-  cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
-
-  cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
-  cairo_fill (cr);
-  cairo_restore (cr);
-
-  cairo_save (cr);
-  cairo_text_extents (cr, string, &extents);
-  cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
-
-  switch (overlay->halign) {
-    case GST_CAIRO_TEXT_OVERLAY_HALIGN_LEFT:
-      x = overlay->xpad;
-      break;
-    case GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER:
-      x = (overlay->width - extents.width) / 2;
-      break;
-    case GST_CAIRO_TEXT_OVERLAY_HALIGN_RIGHT:
-      x = overlay->width - extents.width - overlay->xpad;
-      break;
-    default:
-      x = 0;
-  }
-  x += overlay->deltax;
-
-  overlay->text_x0 = x;
-  overlay->text_x1 = x + extents.x_advance;
-
-  overlay->text_dy = (extents.height + extents.y_bearing);
-  y = overlay->font_height - overlay->text_dy;
-
-  cairo_move_to (cr, x, y);
-  cairo_show_text (cr, string);
-  cairo_restore (cr);
-
-  cairo_destroy (cr);
-  cairo_surface_destroy (surface);
-
-  /* ----------- */
-
-  overlay->text_outline_image =
-      g_realloc (overlay->text_outline_image,
-      4 * overlay->width * overlay->font_height);
-
-  surface = cairo_image_surface_create_for_data (overlay->text_outline_image,
-      CAIRO_FORMAT_ARGB32, overlay->width, overlay->font_height,
-      overlay->width * 4);
-
-  cr = cairo_create (surface);
-
-  cairo_select_font_face (cr, overlay->font, overlay->slant, overlay->weight);
-  cairo_set_font_size (cr, overlay->scale);
-
-  cairo_save (cr);
-  cairo_rectangle (cr, 0, 0, overlay->width, overlay->font_height);
-  cairo_set_source_rgba (cr, 0, 0, 0, 1.0);
-  cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
-  cairo_fill (cr);
-  cairo_restore (cr);
-
-  cairo_save (cr);
-  cairo_move_to (cr, x, y);
-  cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
-  cairo_set_line_width (cr, 1.0);
-  cairo_text_path (cr, string);
-  cairo_stroke (cr);
-  cairo_restore (cr);
-
-  g_free (string);
-
-  cairo_destroy (cr);
-  cairo_surface_destroy (surface);
-
-  overlay->need_render = FALSE;
-}
-
-static GstCaps *
-gst_text_overlay_getcaps (GstPad * pad)
-{
-  GstCairoTextOverlay *overlay;
-  GstPad *otherpad;
-  GstCaps *caps;
-
-  overlay = GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad));
-
-  if (pad == overlay->srcpad)
-    otherpad = overlay->video_sinkpad;
-  else
-    otherpad = overlay->srcpad;
-
-  /* we can do what the peer can */
-  caps = gst_pad_peer_get_caps (otherpad);
-  if (caps) {
-    GstCaps *temp;
-    const GstCaps *templ;
-
-    GST_DEBUG_OBJECT (pad, "peer caps  %" GST_PTR_FORMAT, caps);
-
-    /* filtered against our padtemplate */
-    templ = gst_pad_get_pad_template_caps (otherpad);
-    GST_DEBUG_OBJECT (pad, "our template  %" GST_PTR_FORMAT, templ);
-    temp = gst_caps_intersect (caps, templ);
-    GST_DEBUG_OBJECT (pad, "intersected %" GST_PTR_FORMAT, temp);
-    gst_caps_unref (caps);
-    /* this is what we can do */
-    caps = temp;
-  } else {
-    /* no peer, our padtemplate is enough then */
-    caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
-  }
-
-  GST_DEBUG_OBJECT (overlay, "returning  %" GST_PTR_FORMAT, caps);
-
-  gst_object_unref (overlay);
-
-  return caps;
-}
-
-/* FIXME: upstream nego (e.g. when the video window is resized) */
-
-static gboolean
-gst_text_overlay_setcaps (GstPad * pad, GstCaps * caps)
-{
-  GstCairoTextOverlay *overlay;
-  GstStructure *structure;
-  gboolean ret = FALSE;
-  const GValue *fps;
-
-  if (!GST_PAD_IS_SINK (pad))
-    return TRUE;
-
-  g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
-
-  overlay = GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad));
-
-  overlay->width = 0;
-  overlay->height = 0;
-  structure = gst_caps_get_structure (caps, 0);
-  fps = gst_structure_get_value (structure, "framerate");
-
-  if (gst_structure_get_int (structure, "width", &overlay->width) &&
-      gst_structure_get_int (structure, "height", &overlay->height) &&
-      fps != NULL) {
-    ret = gst_pad_set_caps (overlay->srcpad, caps);
-  }
-
-  overlay->fps_n = gst_value_get_fraction_numerator (fps);
-  overlay->fps_d = gst_value_get_fraction_denominator (fps);
-
-  gst_object_unref (overlay);
-
-  return ret;
-}
-
-static GstPadLinkReturn
-gst_text_overlay_text_pad_linked (GstPad * pad, GstPad * peer)
-{
-  GstCairoTextOverlay *overlay;
-
-  overlay = GST_CAIRO_TEXT_OVERLAY (GST_PAD_PARENT (pad));
-
-  GST_DEBUG_OBJECT (overlay, "Text pad linked");
-
-  if (overlay->text_collect_data == NULL) {
-    overlay->text_collect_data = gst_collect_pads_add_pad (overlay->collect,
-        overlay->text_sinkpad, sizeof (GstCollectData), NULL, TRUE);
-  }
-
-  overlay->need_render = TRUE;
-
-  return GST_PAD_LINK_OK;
-}
-
-static void
-gst_text_overlay_text_pad_unlinked (GstPad * pad)
-{
-  GstCairoTextOverlay *overlay;
-
-  /* don't use gst_pad_get_parent() here, will deadlock */
-  overlay = GST_CAIRO_TEXT_OVERLAY (GST_PAD_PARENT (pad));
-
-  GST_DEBUG_OBJECT (overlay, "Text pad unlinked");
-
-  if (overlay->text_collect_data) {
-    gst_collect_pads_remove_pad (overlay->collect, overlay->text_sinkpad);
-    overlay->text_collect_data = NULL;
-  }
-
-  overlay->need_render = TRUE;
-}
-
-#define BOX_SHADING_VAL -80
-#define BOX_XPAD         6
-#define BOX_YPAD         6
-
-static inline void
-gst_text_overlay_shade_y (GstCairoTextOverlay * overlay, guchar * dest,
-    guint dest_stride, gint y0, gint y1)
-{
-  gint i, j, x0, x1;
-
-  x0 = CLAMP (overlay->text_x0 - BOX_XPAD, 0, overlay->width);
-  x1 = CLAMP (overlay->text_x1 + BOX_XPAD, 0, overlay->width);
-
-  y0 = CLAMP (y0 - BOX_YPAD, 0, overlay->height);
-  y1 = CLAMP (y1 + BOX_YPAD, 0, overlay->height);
-
-  for (i = y0; i < y1; ++i) {
-    for (j = x0; j < x1; ++j) {
-      gint y = dest[(i * dest_stride) + j] + BOX_SHADING_VAL;
-
-      dest[(i * dest_stride) + j] = CLAMP (y, 0, 255);
-    }
-  }
-}
-
-static inline void
-gst_text_overlay_blit_1 (GstCairoTextOverlay * overlay, guchar * dest,
-    guchar * text_image, gint val, guint dest_stride, gint y0)
-{
-  gint i, j;
-  gint x, a, y;
-  gint y1;
-
-  y = val;
-  y0 = MIN (y0, overlay->height);
-  y1 = MIN (y0 + overlay->font_height, overlay->height);
-
-  for (i = y0; i < y1; i++) {
-    for (j = 0; j < overlay->width; j++) {
-      x = dest[i * dest_stride + j];
-      a = text_image[4 * ((i - y0) * overlay->width + j) + 1];
-      dest[i * dest_stride + j] = (y * a + x * (255 - a)) / 255;
-    }
-  }
-}
-
-static inline void
-gst_text_overlay_blit_sub2x2 (GstCairoTextOverlay * overlay, guchar * dest,
-    guchar * text_image, gint val, guint dest_stride, gint y0)
-{
-  gint i, j;
-  gint x, a, y;
-  gint y1;
-
-  y0 = MIN (y0, overlay->height);
-  y1 = MIN (y0 + overlay->font_height, overlay->height);
-
-  y = val;
-
-  for (i = y0; i < y1; i += 2) {
-    for (j = 0; j < overlay->width; j += 2) {
-      x = dest[(i / 2) * dest_stride + j / 2];
-      a = (text_image[4 * ((i - y0) * overlay->width + j) + 1] +
-          text_image[4 * ((i - y0) * overlay->width + j + 1) + 1] +
-          text_image[4 * ((i - y0 + 1) * overlay->width + j) + 1] +
-          text_image[4 * ((i - y0 + 1) * overlay->width + j + 1) + 1] + 2) / 4;
-      dest[(i / 2) * dest_stride + j / 2] = (y * a + x * (255 - a)) / 255;
-    }
-  }
-}
-
-
-static GstFlowReturn
-gst_text_overlay_push_frame (GstCairoTextOverlay * overlay,
-    GstBuffer * video_frame)
-{
-  guchar *y, *u, *v;
-  gint ypos;
-
-  video_frame = gst_buffer_make_writable (video_frame);
-
-  switch (overlay->valign) {
-    case GST_CAIRO_TEXT_OVERLAY_VALIGN_BOTTOM:
-      ypos = overlay->height - overlay->font_height - overlay->ypad;
-      break;
-    case GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE:
-      ypos = overlay->height - (overlay->font_height - overlay->text_dy)
-          - overlay->ypad;
-      break;
-    case GST_CAIRO_TEXT_OVERLAY_VALIGN_TOP:
-      ypos = overlay->ypad;
-      break;
-    default:
-      ypos = overlay->ypad;
-      break;
-  }
-
-  ypos += overlay->deltay;
-
-  y = GST_BUFFER_DATA (video_frame);
-  u = y + I420_U_OFFSET (overlay->width, overlay->height);
-  v = y + I420_V_OFFSET (overlay->width, overlay->height);
-
-  /* shaded background box */
-  if (overlay->want_shading) {
-    gst_text_overlay_shade_y (overlay,
-        y, I420_Y_ROWSTRIDE (overlay->width),
-        ypos + overlay->text_dy, ypos + overlay->font_height);
-  }
-
-  /* blit outline text on video image */
-  gst_text_overlay_blit_1 (overlay,
-      y,
-      overlay->text_outline_image, 0, I420_Y_ROWSTRIDE (overlay->width), ypos);
-  gst_text_overlay_blit_sub2x2 (overlay,
-      u,
-      overlay->text_outline_image, 128, I420_U_ROWSTRIDE (overlay->width),
-      ypos);
-  gst_text_overlay_blit_sub2x2 (overlay, v, overlay->text_outline_image, 128,
-      I420_V_ROWSTRIDE (overlay->width), ypos);
-
-  /* blit text on video image */
-  gst_text_overlay_blit_1 (overlay,
-      y,
-      overlay->text_fill_image, 255, I420_Y_ROWSTRIDE (overlay->width), ypos);
-  gst_text_overlay_blit_sub2x2 (overlay,
-      u,
-      overlay->text_fill_image, 128, I420_U_ROWSTRIDE (overlay->width), ypos);
-  gst_text_overlay_blit_sub2x2 (overlay,
-      v,
-      overlay->text_fill_image, 128, I420_V_ROWSTRIDE (overlay->width), ypos);
-
-  return gst_pad_push (overlay->srcpad, video_frame);
-}
-
-static void
-gst_text_overlay_pop_video (GstCairoTextOverlay * overlay)
-{
-  GstBuffer *buf;
-
-  buf = gst_collect_pads_pop (overlay->collect, overlay->video_collect_data);
-  g_return_if_fail (buf != NULL);
-  gst_buffer_unref (buf);
-}
-
-static void
-gst_text_overlay_pop_text (GstCairoTextOverlay * overlay)
-{
-  GstBuffer *buf;
-
-  if (overlay->text_collect_data) {
-    buf = gst_collect_pads_pop (overlay->collect, overlay->text_collect_data);
-    g_return_if_fail (buf != NULL);
-    gst_buffer_unref (buf);
-  }
-
-  overlay->need_render = TRUE;
-}
-
-/* This function is called when there is data on all pads */
-static GstFlowReturn
-gst_text_overlay_collected (GstCollectPads * pads, gpointer data)
-{
-  GstCairoTextOverlay *overlay;
-  GstFlowReturn ret = GST_FLOW_OK;
-  GstClockTime now, txt_end, frame_end;
-  GstBuffer *video_frame = NULL;
-  GstBuffer *text_buf = NULL;
-  gchar *text;
-  gint text_len;
-
-  overlay = GST_CAIRO_TEXT_OVERLAY (data);
-
-  GST_DEBUG ("Collecting");
-
-  video_frame = gst_collect_pads_peek (overlay->collect,
-      overlay->video_collect_data);
-
-  /* send EOS if video stream EOSed regardless of text stream */
-  if (video_frame == NULL) {
-    GST_DEBUG ("Video stream at EOS");
-    if (overlay->text_collect_data) {
-      text_buf = gst_collect_pads_pop (overlay->collect,
-          overlay->text_collect_data);
-    }
-    gst_pad_push_event (overlay->srcpad, gst_event_new_eos ());
-    ret = GST_FLOW_EOS;
-    goto done;
-  }
-
-  if (GST_BUFFER_TIMESTAMP (video_frame) == GST_CLOCK_TIME_NONE) {
-    g_warning ("%s: video frame has invalid timestamp", G_STRLOC);
-  }
-
-  now = GST_BUFFER_TIMESTAMP (video_frame);
-
-  if (GST_BUFFER_DURATION (video_frame) != GST_CLOCK_TIME_NONE) {
-    frame_end = now + GST_BUFFER_DURATION (video_frame);
-  } else if (overlay->fps_n > 0) {
-    frame_end = now + gst_util_uint64_scale_int (GST_SECOND,
-        overlay->fps_d, overlay->fps_n);
-  } else {
-    /* magic value, does not really matter since texts
-     * tend to span quite a few frames in practice anyway */
-    frame_end = now + GST_SECOND / 25;
-  }
-
-  GST_DEBUG ("Got video frame: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT,
-      GST_TIME_ARGS (now), GST_TIME_ARGS (frame_end));
-
-  /* text pad not linked? */
-  if (overlay->text_collect_data == NULL) {
-    GST_DEBUG ("Text pad not linked, rendering default text: '%s'",
-        GST_STR_NULL (overlay->default_text));
-    if (overlay->default_text && *overlay->default_text != '\0') {
-      gst_text_overlay_render_text (overlay, overlay->default_text, -1);
-      ret = gst_text_overlay_push_frame (overlay, video_frame);
-    } else {
-      ret = gst_pad_push (overlay->srcpad, video_frame);
-    }
-    gst_text_overlay_pop_video (overlay);
-    video_frame = NULL;
-    goto done;
-  }
-
-  text_buf = gst_collect_pads_peek (overlay->collect,
-      overlay->text_collect_data);
-
-  /* just push the video frame if the text stream has EOSed */
-  if (text_buf == NULL) {
-    GST_DEBUG ("Text pad EOSed, just pushing video frame as is");
-    ret = gst_pad_push (overlay->srcpad, video_frame);
-    gst_text_overlay_pop_video (overlay);
-    video_frame = NULL;
-    goto done;
-  }
-
-  /* if the text buffer isn't stamped right, pop it off the
-   *  queue and display it for the current video frame only */
-  if (GST_BUFFER_TIMESTAMP (text_buf) == GST_CLOCK_TIME_NONE ||
-      GST_BUFFER_DURATION (text_buf) == GST_CLOCK_TIME_NONE) {
-    GST_WARNING ("Got text buffer with invalid time stamp or duration");
-    gst_text_overlay_pop_text (overlay);
-    GST_BUFFER_TIMESTAMP (text_buf) = now;
-    GST_BUFFER_DURATION (text_buf) = frame_end - now;
-  }
-
-  txt_end = GST_BUFFER_TIMESTAMP (text_buf) + GST_BUFFER_DURATION (text_buf);
-
-  GST_DEBUG ("Got text buffer: %" GST_TIME_FORMAT " - %" GST_TIME_FORMAT,
-      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (text_buf)), GST_TIME_ARGS (txt_end));
-
-  /* if the text buffer is too old, pop it off the
-   * queue and return so we get a new one next time */
-  if (txt_end < now) {
-    GST_DEBUG ("Text buffer too old, popping off the queue");
-    gst_text_overlay_pop_text (overlay);
-    ret = GST_FLOW_OK;
-    goto done;
-  }
-
-  /* if the video frame ends before the text even starts,
-   * just push it out as is and pop it off the queue */
-  if (frame_end < GST_BUFFER_TIMESTAMP (text_buf)) {
-    GST_DEBUG ("Video buffer before text, pushing out and popping off queue");
-    ret = gst_pad_push (overlay->srcpad, video_frame);
-    gst_text_overlay_pop_video (overlay);
-    video_frame = NULL;
-    goto done;
-  }
-
-  /* text duration overlaps video frame duration */
-  text = g_strndup ((gchar *) GST_BUFFER_DATA (text_buf),
-      GST_BUFFER_SIZE (text_buf));
-  g_strdelimit (text, "\n\r\t", ' ');
-  text_len = strlen (text);
-
-  if (text_len > 0) {
-    GST_DEBUG ("Rendering text '%*s'", text_len, text);;
-    gst_text_overlay_render_text (overlay, text, text_len);
-  } else {
-    GST_DEBUG ("No text to render (empty buffer)");
-    gst_text_overlay_render_text (overlay, " ", 1);
-  }
-
-  g_free (text);
-
-  gst_text_overlay_pop_video (overlay);
-  ret = gst_text_overlay_push_frame (overlay, video_frame);
-  video_frame = NULL;
-  goto done;
-
-done:
-  {
-    if (text_buf)
-      gst_buffer_unref (text_buf);
-
-    if (video_frame)
-      gst_buffer_unref (video_frame);
-
-    return ret;
-  }
-}
-
-static gboolean
-gst_text_overlay_src_event (GstPad * pad, GstEvent * event)
-{
-  GstCairoTextOverlay *overlay =
-      GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad));
-  gboolean ret = TRUE;
-
-  /* forward events to the video sink, and, if it is linked, the text sink */
-  if (overlay->text_collect_data) {
-    gst_event_ref (event);
-    ret &= gst_pad_push_event (overlay->text_sinkpad, event);
-  }
-  ret &= gst_pad_push_event (overlay->video_sinkpad, event);
-
-  gst_object_unref (overlay);
-  return ret;
-}
-
-static gboolean
-gst_text_overlay_video_event (GstPad * pad, GstEvent * event)
-{
-  gboolean ret = FALSE;
-  GstCairoTextOverlay *overlay = NULL;
-
-  overlay = GST_CAIRO_TEXT_OVERLAY (gst_pad_get_parent (pad));
-
-  if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
-    GST_DEBUG_OBJECT (overlay,
-        "received new segment on video sink pad, forwarding");
-    gst_event_ref (event);
-    gst_pad_push_event (overlay->srcpad, event);
-  }
-
-  /* now GstCollectPads can take care of the rest, e.g. EOS */
-  ret = overlay->collect_event (pad, event);
-  gst_object_unref (overlay);
-  return ret;
-}
-
-static GstStateChangeReturn
-gst_text_overlay_change_state (GstElement * element, GstStateChange transition)
-{
-  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
-  GstCairoTextOverlay *overlay = GST_CAIRO_TEXT_OVERLAY (element);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_READY_TO_PAUSED:
-      gst_collect_pads_start (overlay->collect);
-      break;
-    case GST_STATE_CHANGE_PAUSED_TO_READY:
-      /* need to unblock the collectpads before calling the
-       * parent change_state so that streaming can finish */
-      gst_collect_pads_stop (overlay->collect);
-      break;
-    default:
-      break;
-  }
-
-  ret = parent_class->change_state (element, transition);
-  if (ret == GST_STATE_CHANGE_FAILURE)
-    return ret;
-
-  switch (transition) {
-    default:
-      break;
-  }
-
-  return ret;
-}
diff --git a/ext/cairo/gsttextoverlay.h b/ext/cairo/gsttextoverlay.h
deleted file mode 100644
index 34763194f..000000000
--- a/ext/cairo/gsttextoverlay.h
+++ /dev/null
@@ -1,90 +0,0 @@
-
-#ifndef __GST_CAIRO_TEXT_OVERLAY_H__
-#define __GST_CAIRO_TEXT_OVERLAY_H__
-
-#include <gst/gst.h>
-#include <gst/base/gstcollectpads.h>
-
-G_BEGIN_DECLS
-
-#define GST_TYPE_CAIRO_TEXT_OVERLAY           (gst_text_overlay_get_type())
-#define GST_CAIRO_TEXT_OVERLAY(obj)           (G_TYPE_CHECK_INSTANCE_CAST((obj),\
-                                        GST_TYPE_CAIRO_TEXT_OVERLAY, GstCairoTextOverlay))
-#define GST_CAIRO_TEXT_OVERLAY_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass),\
-                                        GST_TYPE_CAIRO_TEXT_OVERLAY, GstCairoTextOverlayClass))
-#define GST_CAIRO_TEXT_OVERLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),\
-                                        GST_TYPE_CAIRO_TEXT_OVERLAY, GstCairoTextOverlayClass))
-#define GST_IS_CAIRO_TEXT_OVERLAY(obj)        (G_TYPE_CHECK_INSTANCE_TYPE((obj),\
-                                        GST_TYPE_CAIRO_TEXT_OVERLAY))
-#define GST_IS_CAIRO_TEXT_OVERLAY_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass),\
-                                        GST_TYPE_CAIRO_TEXT_OVERLAY))
-
-typedef struct _GstCairoTextOverlay      GstCairoTextOverlay;
-typedef struct _GstCairoTextOverlayClass GstCairoTextOverlayClass;
-
-typedef enum _GstCairoTextOverlayVAlign GstCairoTextOverlayVAlign;
-typedef enum _GstCairoTextOverlayHAlign GstCairoTextOverlayHAlign;
-
-enum _GstCairoTextOverlayVAlign {
-    GST_CAIRO_TEXT_OVERLAY_VALIGN_BASELINE,
-    GST_CAIRO_TEXT_OVERLAY_VALIGN_BOTTOM,
-    GST_CAIRO_TEXT_OVERLAY_VALIGN_TOP
-};
-
-enum _GstCairoTextOverlayHAlign {
-    GST_CAIRO_TEXT_OVERLAY_HALIGN_LEFT,
-    GST_CAIRO_TEXT_OVERLAY_HALIGN_CENTER,
-    GST_CAIRO_TEXT_OVERLAY_HALIGN_RIGHT
-};
-
-
-struct _GstCairoTextOverlay {
-    GstElement            element;
-
-    GstPad               *video_sinkpad;
-    GstPad               *text_sinkpad;
-    GstPad               *srcpad;
-
-    GstCollectPads      *collect;
-    GstCollectData      *video_collect_data;
-    GstCollectData      *text_collect_data;
-    GstPadEventFunction   collect_event;
-
-    gint                  width;
-    gint                  height;
-    gint                  fps_n;
-    gint                  fps_d;
-
-    GstCairoTextOverlayVAlign  valign;
-    GstCairoTextOverlayHAlign  halign;
-    gint                  xpad;
-    gint                  ypad;
-    gint                  deltax;
-    gint                  deltay;
-    gchar                *default_text;
-    gboolean              want_shading;
-
-    guchar               *text_fill_image;
-    guchar               *text_outline_image;
-    gint                  font_height;
-    gint                  text_x0, text_x1; /* start/end x position of text */
-    gint                  text_dy;
-
-    gboolean              need_render;
-
-    gchar                *font;
-    gint                  slant;
-    gint                  weight;
-    gdouble               scale;
-    gboolean              silent;
-};
-
-struct _GstCairoTextOverlayClass {
-  GstElementClass parent_class;
-};
-
-GType gst_text_overlay_get_type (void);
-
-G_END_DECLS
-
-#endif /* __GST_CAIRO_TEXT_OVERLAY_H */
diff --git a/ext/cairo/gsttimeoverlay.c b/ext/cairo/gsttimeoverlay.c
deleted file mode 100644
index 7c70b0714..000000000
--- a/ext/cairo/gsttimeoverlay.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- * Copyright (C) <2003> David Schleef <ds@schleef.org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-/**
- * SECTION:element-cairotimeoverlay
- *
- * cairotimeoverlay renders the buffer timestamp for each frame on top of
- * the frame.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch-1.0 videotestsrc ! cairotimeoverlay ! autovideosink
- * ]|
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gst/math-compat.h>
-
-#include <gsttimeoverlay.h>
-
-#include <string.h>
-
-#include <cairo.h>
-
-#include <gst/video/video.h>
-
-static GstStaticPadTemplate gst_cairo_time_overlay_src_template =
-GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-    );
-
-static GstStaticPadTemplate gst_cairo_time_overlay_sink_template =
-GST_STATIC_PAD_TEMPLATE ("sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
-    );
-
-static GstBaseTransformClass *parent_class = NULL;
-
-static void
-gst_cairo_time_overlay_update_font_height (GstCairoTimeOverlay * timeoverlay)
-{
-  gint width, height;
-  cairo_surface_t *font_surface;
-  cairo_t *font_cairo;
-  cairo_font_extents_t font_extents;
-
-  width = timeoverlay->width;
-  height = timeoverlay->height;
-
-  font_surface =
-      cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
-  font_cairo = cairo_create (font_surface);
-  cairo_surface_destroy (font_surface);
-  font_surface = NULL;
-
-  cairo_select_font_face (font_cairo, "monospace", 0, 0);
-  cairo_set_font_size (font_cairo, 20);
-  cairo_font_extents (font_cairo, &font_extents);
-  timeoverlay->text_height = font_extents.height;
-  GST_DEBUG_OBJECT (timeoverlay, "font height is %f", font_extents.height);
-  cairo_destroy (font_cairo);
-  font_cairo = NULL;
-}
-
-static gboolean
-gst_cairo_time_overlay_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
-    GstCaps * outcaps)
-{
-  GstCairoTimeOverlay *filter = GST_CAIRO_TIME_OVERLAY (btrans);
-  GstStructure *structure;
-  gboolean ret = FALSE;
-
-  structure = gst_caps_get_structure (incaps, 0);
-
-  if (gst_structure_get_int (structure, "width", &filter->width) &&
-      gst_structure_get_int (structure, "height", &filter->height)) {
-    gst_cairo_time_overlay_update_font_height (filter);
-    ret = TRUE;
-  }
-
-  return ret;
-}
-
-/* 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)
-
-#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_cairo_time_overlay_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
-    guint * size)
-{
-  GstCairoTimeOverlay *filter;
-  GstStructure *structure;
-  gboolean ret = FALSE;
-  gint width, height;
-
-  filter = GST_CAIRO_TIME_OVERLAY (btrans);
-
-  structure = gst_caps_get_structure (caps, 0);
-
-  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 (filter, "our frame size is %d bytes (%dx%d)", *size,
-        width, height);
-  }
-
-  return ret;
-}
-
-static char *
-gst_cairo_time_overlay_print_smpte_time (guint64 time)
-{
-  int hours;
-  int minutes;
-  int seconds;
-  int ms;
-  double x;
-
-  x = rint (gst_util_guint64_to_gdouble (time + 500000) * 1e-6);
-
-  hours = floor (x / (60 * 60 * 1000));
-  x -= hours * 60 * 60 * 1000;
-  minutes = floor (x / (60 * 1000));
-  x -= minutes * 60 * 1000;
-  seconds = floor (x / (1000));
-  x -= seconds * 1000;
-  ms = rint (x);
-
-  return g_strdup_printf ("%02d:%02d:%02d.%03d", hours, minutes, seconds, ms);
-}
-
-
-static GstFlowReturn
-gst_cairo_time_overlay_transform (GstBaseTransform * trans, GstBuffer * in,
-    GstBuffer * out)
-{
-  GstCairoTimeOverlay *timeoverlay;
-  int width;
-  int height;
-  int b_width;
-  int stride_y, stride_u, stride_v;
-  char *string;
-  int i, j;
-  unsigned char *image;
-  cairo_text_extents_t extents;
-  guint8 *dest, *src;
-  cairo_surface_t *font_surface;
-  cairo_t *text_cairo;
-  GstFlowReturn ret = GST_FLOW_OK;
-
-  timeoverlay = GST_CAIRO_TIME_OVERLAY (trans);
-
-  gst_buffer_copy_metadata (out, in, GST_BUFFER_COPY_TIMESTAMPS);
-
-  src = GST_BUFFER_DATA (in);
-  dest = GST_BUFFER_DATA (out);
-
-  width = timeoverlay->width;
-  height = timeoverlay->height;
-
-  /* create surface for font rendering */
-  /* FIXME: preparation of the surface could also be done once when settings
-   * change */
-  image = g_malloc (4 * width * timeoverlay->text_height);
-
-  font_surface =
-      cairo_image_surface_create_for_data (image, CAIRO_FORMAT_ARGB32, width,
-      timeoverlay->text_height, width * 4);
-  text_cairo = cairo_create (font_surface);
-  cairo_surface_destroy (font_surface);
-  font_surface = NULL;
-
-  /* we draw a rectangle because the compositing on the buffer below
-   * doesn't do alpha */
-  cairo_save (text_cairo);
-  cairo_rectangle (text_cairo, 0, 0, width, timeoverlay->text_height);
-  cairo_set_source_rgba (text_cairo, 0, 0, 0, 1);
-  cairo_set_operator (text_cairo, CAIRO_OPERATOR_SOURCE);
-  cairo_fill (text_cairo);
-  cairo_restore (text_cairo);
-
-  string = gst_cairo_time_overlay_print_smpte_time (GST_BUFFER_TIMESTAMP (in));
-  cairo_save (text_cairo);
-  cairo_select_font_face (text_cairo, "monospace", 0, 0);
-  cairo_set_font_size (text_cairo, 20);
-  cairo_text_extents (text_cairo, string, &extents);
-  cairo_set_source_rgb (text_cairo, 1, 1, 1);
-  cairo_move_to (text_cairo, 0, timeoverlay->text_height - 2);
-  cairo_show_text (text_cairo, string);
-  g_free (string);
-
-  cairo_restore (text_cairo);
-
-  /* blend width; should retain a max text width so it doesn't jitter */
-  b_width = extents.width;
-  if (b_width > width)
-    b_width = width;
-
-  stride_y = GST_VIDEO_I420_Y_ROWSTRIDE (width);
-  stride_u = GST_VIDEO_I420_U_ROWSTRIDE (width);
-  stride_v = GST_VIDEO_I420_V_ROWSTRIDE (width);
-
-  memcpy (dest, src, GST_BUFFER_SIZE (in));
-  for (i = 0; i < timeoverlay->text_height; i++) {
-    for (j = 0; j < b_width; j++) {
-      ((unsigned char *) dest)[i * stride_y + j] =
-          image[(i * width + j) * 4 + 0];
-    }
-  }
-  for (i = 0; i < timeoverlay->text_height / 2; i++) {
-    memset (dest + GST_VIDEO_I420_U_OFFSET (width, height) + i * stride_u, 128,
-        b_width / 2);
-    memset (dest + GST_VIDEO_I420_V_OFFSET (width, height) + i * stride_v, 128,
-        b_width / 2);
-  }
-
-  cairo_destroy (text_cairo);
-  text_cairo = NULL;
-  g_free (image);
-
-  return ret;
-}
-
-static void
-gst_cairo_time_overlay_base_init (gpointer g_class)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_set_static_metadata (element_class, "Time overlay",
-      "Filter/Editor/Video",
-      "Overlays the time on a video stream", "David Schleef <ds@schleef.org>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&gst_cairo_time_overlay_sink_template));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&gst_cairo_time_overlay_src_template));
-}
-
-static void
-gst_cairo_time_overlay_class_init (gpointer klass, gpointer class_data)
-{
-  GstBaseTransformClass *trans_class;
-
-  trans_class = (GstBaseTransformClass *) klass;
-
-  parent_class = g_type_class_peek_parent (klass);
-
-  trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_cairo_time_overlay_set_caps);
-  trans_class->get_unit_size =
-      GST_DEBUG_FUNCPTR (gst_cairo_time_overlay_get_unit_size);
-  trans_class->transform = GST_DEBUG_FUNCPTR (gst_cairo_time_overlay_transform);
-}
-
-static void
-gst_cairo_time_overlay_init (GTypeInstance * instance, gpointer g_class)
-{
-}
-
-GType
-gst_cairo_time_overlay_get_type (void)
-{
-  static GType cairo_time_overlay_type = 0;
-
-  if (!cairo_time_overlay_type) {
-    static const GTypeInfo cairo_time_overlay_info = {
-      sizeof (GstCairoTimeOverlayClass),
-      gst_cairo_time_overlay_base_init,
-      NULL,
-      gst_cairo_time_overlay_class_init,
-      NULL,
-      NULL,
-      sizeof (GstCairoTimeOverlay),
-      0,
-      gst_cairo_time_overlay_init,
-    };
-
-    cairo_time_overlay_type = g_type_register_static (GST_TYPE_BASE_TRANSFORM,
-        "GstCairoTimeOverlay", &cairo_time_overlay_info, 0);
-  }
-  return cairo_time_overlay_type;
-}
diff --git a/ext/cairo/gsttimeoverlay.h b/ext/cairo/gsttimeoverlay.h
deleted file mode 100644
index 63e60d758..000000000
--- a/ext/cairo/gsttimeoverlay.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* 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., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#ifndef __GST_CAIRO_TIME_OVERLAY_H__
-#define __GST_CAIRO_TIME_OVERLAY_H__
-
-#include <gst/gst.h>
-#include <gst/base/gstbasetransform.h>
-#include <cairo.h>
-
-G_BEGIN_DECLS
-
-#define GST_TYPE_CAIRO_TIME_OVERLAY \
-  (gst_cairo_time_overlay_get_type())
-#define GST_CAIRO_TIME_OVERLAY(obj) \
-  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAIRO_TIME_OVERLAY,GstCairoTimeOverlay))
-#define GST_CAIRO_TIME_OVERLAY_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAIRO_TIME_OVERLAY,GstCairoTimeOverlayClass))
-#define GST_IS_CAIRO_TIME_OVERLAY(obj) \
-  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAIRO_TIME_OVERLAY))
-#define GST_IS_CAIRO_TIME_OVERLAY_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAIRO_TIME_OVERLAY))
-
-typedef struct _GstCairoTimeOverlay {
-  GstBaseTransform basetransform;
-
-  gint width, height;
-
-  cairo_surface_t *surface;
-  cairo_t *cr;
-  int text_height;
-
-} GstCairoTimeOverlay;
-
-typedef struct _GstCairoTimeOverlayClass {
-  GstBaseTransformClass parent_class;
-} GstCairoTimeOverlayClass;
-
-GType gst_cairo_time_overlay_get_type(void);
-
-G_END_DECLS
-
-#endif /* __GST_CAIRO_TIME_OVERLAY_H__ */