sdi: Add raw SDI muxing/demuxing elements

6 files changed, 1065 insertions, 0 deletions

diff --git a/gst/sdi/Makefile.am b/gst/sdi/Makefile.am
new file mode 100644
index 000000000..160ad85c2
--- /dev/null
+++ b/gst/sdi/Makefile.am
@@ -0,0 +1,14 @@
+plugin_LTLIBRARIES = libgstsdi.la
+
+libgstsdi_la_SOURCES = gstsdi.c \
+	gstsdidemux.c \
+	gstsdimux.c
+
+libgstsdi_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
+libgstsdi_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) \
+		       $(GST_LIBS)
+libgstsdi_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+libgstsdi_la_LIBTOOLFLAGS = --tag=disable-static
+
+noinst_HEADERS = gstsdidemux.h gstsdimux.h
+
diff --git a/gst/sdi/gstsdi.c b/gst/sdi/gstsdi.c
new file mode 100644
index 000000000..30101ebaf
--- /dev/null
+++ b/gst/sdi/gstsdi.c
@@ -0,0 +1,44 @@
+/* GStreamer
+ * Copyright (C) 2010 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstsdidemux.h"
+#include "gstsdimux.h"
+
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+
+  gst_element_register (plugin, "sdidemux", GST_RANK_NONE,
+      gst_sdi_demux_get_type ());
+  gst_element_register (plugin, "sdimux", GST_RANK_NONE,
+      gst_sdi_mux_get_type ());
+
+  return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "sdi",
+    "SDI elements", plugin_init, VERSION, "LGPL", PACKAGE_NAME,
+    GST_PACKAGE_ORIGIN)
diff --git a/gst/sdi/gstsdidemux.c b/gst/sdi/gstsdidemux.c
new file mode 100644
index 000000000..bc0b76635
--- /dev/null
+++ b/gst/sdi/gstsdidemux.c
@@ -0,0 +1,553 @@
+/* GStreamer
+ * Copyright (C) 2010 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+/**
+ * SECTION:element-gstsdidemux
+ *
+ * The gstsdidemux element does FIXME stuff.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v fakesrc ! gstsdidemux ! FIXME ! fakesink
+ * ]|
+ * FIXME Describe what the pipeline does.
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/gst.h>
+#include <string.h>
+#include "gstsdidemux.h"
+
+/* prototypes */
+
+
+static void gst_sdi_demux_set_property (GObject * object,
+    guint property_id, const GValue * value, GParamSpec * pspec);
+static void gst_sdi_demux_get_property (GObject * object,
+    guint property_id, GValue * value, GParamSpec * pspec);
+static void gst_sdi_demux_dispose (GObject * object);
+static void gst_sdi_demux_finalize (GObject * object);
+
+static GstStateChangeReturn
+gst_sdi_demux_change_state (GstElement * element, GstStateChange transition);
+static GstFlowReturn gst_sdi_demux_chain (GstPad * pad, GstBuffer * buffer);
+static gboolean gst_sdi_demux_sink_event (GstPad * pad, GstEvent * event);
+static gboolean gst_sdi_demux_src_event (GstPad * pad, GstEvent * event);
+static GstCaps *gst_sdi_demux_src_getcaps (GstPad * pad);
+
+
+enum
+{
+  PROP_0
+};
+
+/* pad templates */
+
+#define GST_VIDEO_CAPS_NTSC(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
+  "framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=10/11," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+#define GST_VIDEO_CAPS_NTSC_WIDE(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
+  "framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=40/33," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+#define GST_VIDEO_CAPS_PAL(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
+  "framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=12/11," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+#define GST_VIDEO_CAPS_PAL_WIDE(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
+  "framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=16/11," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+
+static GstStaticPadTemplate gst_sdi_demux_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("application/x-raw-sdi")
+    );
+
+static GstStaticPadTemplate gst_sdi_demux_src_template =
+    GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_NTSC ("UYVY") ";"
+        GST_VIDEO_CAPS_PAL ("UYVY"))
+    );
+
+/* class initialization */
+
+GST_BOILERPLATE (GstSdiDemux, gst_sdi_demux, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_sdi_demux_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_sdi_demux_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_sdi_demux_sink_template));
+
+  gst_element_class_set_details_simple (element_class,
+      "SDI Demuxer",
+      "Demuxer",
+      "Demultiplex SDI streams into raw audio and video",
+      "David Schleef <ds@schleef.org>");
+}
+
+static void
+gst_sdi_demux_class_init (GstSdiDemuxClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gobject_class->set_property = gst_sdi_demux_set_property;
+  gobject_class->get_property = gst_sdi_demux_get_property;
+  gobject_class->dispose = gst_sdi_demux_dispose;
+  gobject_class->finalize = gst_sdi_demux_finalize;
+  if (0)
+    element_class->change_state =
+        GST_DEBUG_FUNCPTR (gst_sdi_demux_change_state);
+
+}
+
+static void
+gst_sdi_demux_init (GstSdiDemux * sdidemux, GstSdiDemuxClass * sdidemux_class)
+{
+
+  sdidemux->sinkpad =
+      gst_pad_new_from_static_template (&gst_sdi_demux_sink_template, "sink");
+  gst_pad_set_event_function (sdidemux->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_demux_sink_event));
+  gst_pad_set_chain_function (sdidemux->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_demux_chain));
+  gst_element_add_pad (GST_ELEMENT (sdidemux), sdidemux->sinkpad);
+
+  sdidemux->srcpad =
+      gst_pad_new_from_static_template (&gst_sdi_demux_src_template, "src");
+  gst_pad_set_event_function (sdidemux->srcpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_demux_src_event));
+  gst_pad_set_getcaps_function (sdidemux->srcpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_demux_src_getcaps));
+  gst_element_add_pad (GST_ELEMENT (sdidemux), sdidemux->srcpad);
+
+
+}
+
+void
+gst_sdi_demux_set_property (GObject * object, guint property_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstSdiDemux *sdidemux;
+
+  g_return_if_fail (GST_IS_SDI_DEMUX (object));
+  sdidemux = GST_SDI_DEMUX (object);
+
+  switch (property_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+void
+gst_sdi_demux_get_property (GObject * object, guint property_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstSdiDemux *sdidemux;
+
+  g_return_if_fail (GST_IS_SDI_DEMUX (object));
+  sdidemux = GST_SDI_DEMUX (object);
+
+  switch (property_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+void
+gst_sdi_demux_dispose (GObject * object)
+{
+  GstSdiDemux *sdidemux;
+
+  g_return_if_fail (GST_IS_SDI_DEMUX (object));
+  sdidemux = GST_SDI_DEMUX (object);
+
+  /* clean up as possible.  may be called multiple times */
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+void
+gst_sdi_demux_finalize (GObject * object)
+{
+  GstSdiDemux *sdidemux;
+
+  g_return_if_fail (GST_IS_SDI_DEMUX (object));
+  sdidemux = GST_SDI_DEMUX (object);
+
+  /* clean up object here */
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+
+static GstStateChangeReturn
+gst_sdi_demux_change_state (GstElement * element, GstStateChange transition)
+{
+
+  return GST_STATE_CHANGE_SUCCESS;
+}
+
+static GstCaps *
+gst_sdi_demux_src_getcaps (GstPad * pad)
+{
+  return gst_caps_from_string (GST_VIDEO_CAPS_NTSC ("UYVY"));
+}
+
+static void
+gst_sdi_demux_get_output_buffer (GstSdiDemux * sdidemux)
+{
+  sdidemux->output_buffer =
+      gst_buffer_new_and_alloc (720 * sdidemux->format->active_lines * 2);
+  gst_buffer_set_caps (sdidemux->output_buffer,
+      gst_caps_from_string (GST_VIDEO_CAPS_PAL ("UYVY")));
+  GST_BUFFER_TIMESTAMP (sdidemux->output_buffer) =
+      GST_SECOND * sdidemux->frame_number;
+  sdidemux->frame_number++;
+}
+
+static guint32
+get_word10 (guint8 * ptr)
+{
+  guint32 a;
+
+  a = (((ptr[0] >> 2) | (ptr[1] << 6)) & 0xff) << 24;
+  a |= (((ptr[1] >> 4) | (ptr[2] << 4)) & 0xff) << 16;
+  a |= (((ptr[2] >> 6) | (ptr[3] << 2)) & 0xff) << 8;
+  a |= ptr[4];
+
+  return a;
+}
+
+static void
+line10_copy (guint8 * dest, guint8 * src, int n)
+{
+  int i;
+  guint32 a;
+  for (i = 0; i < n; i++) {
+    a = get_word10 (src);
+    GST_WRITE_UINT32_BE (dest, a);
+    src += 5;
+    dest += 4;
+  }
+
+}
+
+
+static GstFlowReturn
+copy_line (GstSdiDemux * sdidemux, guint8 * line)
+{
+  guint8 *output_data;
+  GstFlowReturn ret = GST_FLOW_OK;
+  GstSdiFormat *format = sdidemux->format;
+
+  output_data = GST_BUFFER_DATA (sdidemux->output_buffer);
+
+  /* line is one less than the video line */
+  if (sdidemux->line >= format->start0 - 1 &&
+      sdidemux->line < format->start0 - 1 + format->active_lines / 2) {
+#if 0
+    memcpy (output_data + 720 * 2 * ((sdidemux->line -
+                (format->start0 - 1)) * 2 + (!format->tff)),
+        line + (format->width - 720) * 2, 720 * 2);
+#else
+    line10_copy (output_data + 720 * 2 * ((sdidemux->line -
+                (format->start0 - 1)) * 2 + (!format->tff)),
+        line + (format->width - 720) / 2 * 5, 720 / 2);
+#endif
+  }
+  if (sdidemux->line >= format->start1 - 1 &&
+      sdidemux->line < format->start1 - 1 + format->active_lines / 2) {
+#if 0
+    memcpy (output_data + 720 * 2 * ((sdidemux->line -
+                (format->start1 - 1)) * 2 + (format->tff)),
+        line + (format->width - 720) * 2, 720 * 2);
+#else
+    line10_copy (output_data + 720 * 2 * ((sdidemux->line -
+                (format->start1 - 1)) * 2 + (format->tff)),
+        line + (format->width - 720) / 2 * 5, 720 / 2);
+#endif
+  }
+
+  sdidemux->offset = 0;
+  sdidemux->line++;
+  if (sdidemux->line == format->lines) {
+    ret = gst_pad_push (sdidemux->srcpad, sdidemux->output_buffer);
+    gst_sdi_demux_get_output_buffer (sdidemux);
+    output_data = GST_BUFFER_DATA (sdidemux->output_buffer);
+    sdidemux->line = 0;
+  }
+
+  return ret;
+}
+
+#define SDI_IS_SYNC(a) (((a)&0xffffff80) == 0xff000080)
+#define SDI_SYNC_F(a) (((a)>>6)&1)
+#define SDI_SYNC_V(a) (((a)>>5)&1)
+#define SDI_SYNC_H(a) (((a)>>4)&1)
+
+GstSdiFormat sd_ntsc = { 525, 480, 858, 20, 283, 0 };
+GstSdiFormat sd_pal = { 625, 576, 864, 23, 336, 1 };
+
+static GstFlowReturn
+gst_sdi_demux_chain (GstPad * pad, GstBuffer * buffer)
+{
+  GstSdiDemux *sdidemux;
+  int offset = 0;
+  guint8 *data = GST_BUFFER_DATA (buffer);
+  int size = GST_BUFFER_SIZE (buffer);
+  guint8 *output_data;
+  GstFlowReturn ret = GST_FLOW_OK;
+  GstSdiFormat *format;
+
+  sdidemux = GST_SDI_DEMUX (gst_pad_get_parent (pad));
+  sdidemux->format = &sd_pal;
+  format = sdidemux->format;
+
+  GST_DEBUG_OBJECT (sdidemux, "chain");
+
+  if (GST_BUFFER_IS_DISCONT (buffer)) {
+    sdidemux->have_hsync = FALSE;
+    sdidemux->have_vsync = FALSE;
+  }
+
+  if (!sdidemux->have_hsync) {
+#if 0
+    for (offset = 0; offset < size; offset += 4) {
+      guint32 sync = READ_UINT32_BE (data + offset);
+      GST_ERROR ("sync value %08x", sync);
+      if (SDI_IS_SYNC (sync) && SDI_SYNC_H (sync)) {
+        sdidemux->have_hsync = TRUE;
+        sdidemux->line = 0;
+        sdidemux->offset = 0;
+        break;
+      }
+    }
+#else
+    for (offset = 0; offset < size; offset += 5) {
+      guint32 sync = get_word10 (data + offset);
+      //GST_ERROR("sync value %08x", sync);
+      if (SDI_IS_SYNC (sync) && SDI_SYNC_H (sync)) {
+        sdidemux->have_hsync = TRUE;
+        sdidemux->line = 0;
+        sdidemux->offset = 0;
+        break;
+      }
+    }
+#endif
+    if (!sdidemux->have_hsync) {
+      GST_ERROR ("no sync");
+      goto out;
+    }
+  }
+
+  if (sdidemux->output_buffer == NULL) {
+    gst_sdi_demux_get_output_buffer (sdidemux);
+  }
+  output_data = GST_BUFFER_DATA (sdidemux->output_buffer);
+
+#if 0
+  if (sdidemux->offset) {
+    int n;
+
+    /* second half of a line */
+    n = MIN (size - offset, format->width * 2 - sdidemux->offset);
+
+    memcpy (sdidemux->stored_line + sdidemux->offset, data + offset, n);
+
+    offset += n;
+    sdidemux->offset += n;
+
+    if (sdidemux->offset == format->width * 2) {
+      guint32 sync =
+          GST_READ_UINT32_BE (data + offset + (format->width - 720 - 2) * 2);
+
+      //GST_ERROR("%08x", sync);
+      if (!sdidemux->have_vsync) {
+        //GST_ERROR("%08x", GST_READ_UINT32_BE(data+offset));
+        if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
+            SDI_SYNC_F (sdidemux->last_sync)) {
+          sdidemux->have_vsync = TRUE;
+        }
+        sdidemux->line = 0;
+      }
+
+      ret = copy_line (sdidemux, sdidemux->stored_line);
+
+      sdidemux->last_sync = sync;
+    }
+  }
+
+  while (size - offset >= format->width * 2) {
+    guint32 sync =
+        GST_READ_UINT32_BE (data + offset + (format->width - 720 - 2) * 2);
+
+    //GST_ERROR("%08x", sync);
+    if (!sdidemux->have_vsync) {
+      if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
+          SDI_SYNC_F (sdidemux->last_sync)) {
+        sdidemux->have_vsync = TRUE;
+      }
+      sdidemux->line = 0;
+    }
+
+    ret = copy_line (sdidemux, data + offset);
+    offset += format->width * 2;
+
+    sdidemux->last_sync = sync;
+  }
+
+  if (size - offset > 0) {
+    memcpy (sdidemux->stored_line, data + offset, size - offset);
+    sdidemux->offset = size - offset;
+  }
+#else
+  if (sdidemux->offset) {
+    int n;
+
+    /* second half of a line */
+    n = MIN (size - offset, format->width / 2 * 5 - sdidemux->offset);
+
+    memcpy (sdidemux->stored_line + sdidemux->offset, data + offset, n);
+
+    offset += n;
+    sdidemux->offset += n;
+
+    if (sdidemux->offset == (format->width / 2) * 5) {
+      guint32 sync =
+          get_word10 (data + offset + ((format->width - 720 - 2) / 2) * 5);
+
+      if (!sdidemux->have_vsync) {
+        //GST_ERROR("%08x", GST_READ_UINT32_BE(data+offset));
+        if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
+            SDI_SYNC_F (sdidemux->last_sync)) {
+          sdidemux->have_vsync = TRUE;
+        }
+        sdidemux->line = 0;
+      }
+
+      ret = copy_line (sdidemux, sdidemux->stored_line);
+
+      sdidemux->last_sync = sync;
+    }
+  }
+
+  while (size - offset >= format->width / 2 * 5) {
+    guint32 sync =
+        get_word10 (data + offset + ((format->width - 720 - 2) / 2) * 5);
+
+    //GST_ERROR("%08x", sync);
+    if (!sdidemux->have_vsync) {
+      if (SDI_IS_SYNC (sync) && !SDI_SYNC_F (sync) &&
+          SDI_SYNC_F (sdidemux->last_sync)) {
+        sdidemux->have_vsync = TRUE;
+      }
+      sdidemux->line = 0;
+    }
+
+    ret = copy_line (sdidemux, data + offset);
+    offset += (format->width / 2) * 5;
+
+    sdidemux->last_sync = sync;
+  }
+
+  if (size - offset > 0) {
+    memcpy (sdidemux->stored_line, data + offset, size - offset);
+    sdidemux->offset = size - offset;
+  }
+#endif
+
+out:
+  gst_buffer_unref (buffer);
+  gst_object_unref (sdidemux);
+  return ret;
+}
+
+static gboolean
+gst_sdi_demux_sink_event (GstPad * pad, GstEvent * event)
+{
+  gboolean res;
+  GstSdiDemux *sdidemux;
+
+  sdidemux = GST_SDI_DEMUX (gst_pad_get_parent (pad));
+
+  GST_DEBUG_OBJECT (sdidemux, "event");
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_FLUSH_START:
+      res = gst_pad_push_event (sdidemux->srcpad, event);
+      break;
+    case GST_EVENT_FLUSH_STOP:
+      res = gst_pad_push_event (sdidemux->srcpad, event);
+      break;
+    case GST_EVENT_NEWSEGMENT:
+      res = gst_pad_push_event (sdidemux->srcpad, event);
+      break;
+    case GST_EVENT_EOS:
+      res = gst_pad_push_event (sdidemux->srcpad, event);
+      break;
+    default:
+      res = gst_pad_push_event (sdidemux->srcpad, event);
+      break;
+  }
+
+  gst_object_unref (sdidemux);
+  return TRUE;
+}
+
+static gboolean
+gst_sdi_demux_src_event (GstPad * pad, GstEvent * event)
+{
+  gboolean res;
+  GstSdiDemux *sdidemux;
+
+  sdidemux = GST_SDI_DEMUX (gst_pad_get_parent (pad));
+
+  GST_DEBUG_OBJECT (sdidemux, "event");
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_SEEK:
+      res = gst_pad_push_event (sdidemux->sinkpad, event);
+      break;
+    default:
+      res = gst_pad_push_event (sdidemux->sinkpad, event);
+      break;
+  }
+
+  gst_object_unref (sdidemux);
+  return TRUE;
+}
diff --git a/gst/sdi/gstsdidemux.h b/gst/sdi/gstsdidemux.h
new file mode 100644
index 000000000..5c6425ad2
--- /dev/null
+++ b/gst/sdi/gstsdidemux.h
@@ -0,0 +1,76 @@
+/* GStreamer
+ * Copyright (C) 2010 REAL_NAME <EMAIL_ADDRESS>
+ *
+ * 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.
+ */
+
+#ifndef _GST_SDI_DEMUX_H_
+#define _GST_SDI_DEMUX_H_
+
+#include <gst/gst.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_SDI_DEMUX   (gst_sdi_demux_get_type())
+#define GST_SDI_DEMUX(obj)   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SDI_DEMUX,GstSdiDemux))
+#define GST_SDI_DEMUX_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SDI_DEMUX,GstSdiDemuxClass))
+#define GST_IS_SDI_DEMUX(obj)   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SDI_DEMUX))
+#define GST_IS_SDI_DEMUX_CLASS(obj)   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SDI_DEMUX))
+
+typedef struct _GstSdiDemux GstSdiDemux;
+typedef struct _GstSdiDemuxClass GstSdiDemuxClass;
+typedef struct _GstSdiFormat GstSdiFormat;
+
+struct _GstSdiDemux
+{
+  GstElement base_sdidemux;
+  GstPad *sinkpad;
+  GstPad *srcpad;
+
+  GstBuffer *output_buffer;
+  int line;
+  int offset;
+
+  gboolean have_hsync;
+  gboolean have_vsync;
+  guchar stored_line[2160]; /* 864/2*5 */
+
+  int frame_number;
+  guint32 last_sync;
+  GstSdiFormat *format;
+};
+
+struct _GstSdiFormat
+{
+  int lines;
+  int active_lines;
+  int width;
+  int start0;
+  int start1;
+  int tff;
+};
+
+struct _GstSdiDemuxClass
+{
+  GstElementClass base_sdidemux_class;
+};
+
+GType gst_sdi_demux_get_type (void);
+
+G_END_DECLS
+
+#endif
diff --git a/gst/sdi/gstsdimux.c b/gst/sdi/gstsdimux.c
new file mode 100644
index 000000000..d2c4ef7c6
--- /dev/null
+++ b/gst/sdi/gstsdimux.c
@@ -0,0 +1,324 @@
+/* GStreamer
+ * Copyright (C) 2010 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+/**
+ * SECTION:element-gstsdimux
+ *
+ * The gstsdimux element does FIXME stuff.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v fakesrc ! gstsdimux ! FIXME ! fakesink
+ * ]|
+ * FIXME Describe what the pipeline does.
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/gst.h>
+#include "gstsdimux.h"
+
+/* prototypes */
+
+
+static void gst_sdi_mux_set_property (GObject * object,
+    guint property_id, const GValue * value, GParamSpec * pspec);
+static void gst_sdi_mux_get_property (GObject * object,
+    guint property_id, GValue * value, GParamSpec * pspec);
+static void gst_sdi_mux_dispose (GObject * object);
+static void gst_sdi_mux_finalize (GObject * object);
+
+static GstPad *gst_sdi_mux_request_new_pad (GstElement * element,
+    GstPadTemplate * templ, const gchar * name);
+static void gst_sdi_mux_release_pad (GstElement * element, GstPad * pad);
+static GstStateChangeReturn
+gst_sdi_mux_change_state (GstElement * element, GstStateChange transition);
+static const GstQueryType *gst_sdi_mux_get_query_types (GstElement * element);
+static gboolean gst_sdi_mux_query (GstElement * element, GstQuery * query);
+static GstFlowReturn gst_sdi_mux_chain (GstPad * pad, GstBuffer * buffer);
+static gboolean gst_sdi_mux_sink_event (GstPad * pad, GstEvent * event);
+static gboolean gst_sdi_mux_src_event (GstPad * pad, GstEvent * event);
+
+enum
+{
+  PROP_0
+};
+
+/* pad templates */
+
+#define GST_VIDEO_CAPS_NTSC(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
+  "framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=10/11," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+#define GST_VIDEO_CAPS_NTSC_WIDE(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=480," \
+  "framerate=30000/1001,interlaced=TRUE,pixel-aspect-ratio=40/33," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+#define GST_VIDEO_CAPS_PAL(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
+  "framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=12/11," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+#define GST_VIDEO_CAPS_PAL_WIDE(fourcc) \
+  "video/x-raw-yuv,format=(fourcc)" fourcc ",width=720,height=576," \
+  "framerate=25/1,interlaced=TRUE,pixel-aspect-ratio=16/11," \
+  "chroma-site=mpeg2,color-matrix=sdtv"
+
+static GstStaticPadTemplate gst_sdi_mux_sink_template =
+    GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_NTSC ("{UYVY,v210}") ";"
+        GST_VIDEO_CAPS_PAL ("{UYVY,v210}"))
+    );
+
+static GstStaticPadTemplate gst_sdi_mux_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS
+    ("application/x-raw-sdi,rate=270,format=(fourcc){UYVY,v210}")
+    );
+
+/* class initialization */
+
+GST_BOILERPLATE (GstSdiMux, gst_sdi_mux, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_sdi_mux_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_sdi_mux_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_sdi_mux_sink_template));
+
+  gst_element_class_set_details_simple (element_class, "SDI Muxer",
+      "Muxer",
+      "Multiplex raw audio and video into SDI",
+      "David Schleef <ds@schleef.org>");
+}
+
+static void
+gst_sdi_mux_class_init (GstSdiMuxClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gobject_class->set_property = gst_sdi_mux_set_property;
+  gobject_class->get_property = gst_sdi_mux_get_property;
+  gobject_class->dispose = gst_sdi_mux_dispose;
+  gobject_class->finalize = gst_sdi_mux_finalize;
+  element_class->request_new_pad =
+      GST_DEBUG_FUNCPTR (gst_sdi_mux_request_new_pad);
+  element_class->release_pad = GST_DEBUG_FUNCPTR (gst_sdi_mux_release_pad);
+  element_class->change_state = GST_DEBUG_FUNCPTR (gst_sdi_mux_change_state);
+  element_class->get_query_types =
+      GST_DEBUG_FUNCPTR (gst_sdi_mux_get_query_types);
+  element_class->query = GST_DEBUG_FUNCPTR (gst_sdi_mux_query);
+
+}
+
+static void
+gst_sdi_mux_init (GstSdiMux * sdimux, GstSdiMuxClass * sdimux_class)
+{
+
+  sdimux->sinkpad =
+      gst_pad_new_from_static_template (&gst_sdi_mux_sink_template, "sink");
+  gst_pad_set_event_function (sdimux->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_mux_sink_event));
+  gst_pad_set_chain_function (sdimux->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_mux_chain));
+  gst_element_add_pad (GST_ELEMENT (sdimux), sdimux->sinkpad);
+
+  sdimux->srcpad = gst_pad_new_from_static_template (&gst_sdi_mux_src_template,
+      "src");
+  gst_pad_set_event_function (sdimux->srcpad,
+      GST_DEBUG_FUNCPTR (gst_sdi_mux_src_event));
+  gst_element_add_pad (GST_ELEMENT (sdimux), sdimux->srcpad);
+
+}
+
+void
+gst_sdi_mux_set_property (GObject * object, guint property_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstSdiMux *sdimux;
+
+  g_return_if_fail (GST_IS_SDI_MUX (object));
+  sdimux = GST_SDI_MUX (object);
+
+  switch (property_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+void
+gst_sdi_mux_get_property (GObject * object, guint property_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstSdiMux *sdimux;
+
+  g_return_if_fail (GST_IS_SDI_MUX (object));
+  sdimux = GST_SDI_MUX (object);
+
+  switch (property_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+void
+gst_sdi_mux_dispose (GObject * object)
+{
+  GstSdiMux *sdimux;
+
+  g_return_if_fail (GST_IS_SDI_MUX (object));
+  sdimux = GST_SDI_MUX (object);
+
+  /* clean up as possible.  may be called multiple times */
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+void
+gst_sdi_mux_finalize (GObject * object)
+{
+  GstSdiMux *sdimux;
+
+  g_return_if_fail (GST_IS_SDI_MUX (object));
+  sdimux = GST_SDI_MUX (object);
+
+  /* clean up object here */
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+
+
+static GstPad *
+gst_sdi_mux_request_new_pad (GstElement * element, GstPadTemplate * templ,
+    const gchar * name)
+{
+
+  return NULL;
+}
+
+static void
+gst_sdi_mux_release_pad (GstElement * element, GstPad * pad)
+{
+
+}
+
+static GstStateChangeReturn
+gst_sdi_mux_change_state (GstElement * element, GstStateChange transition)
+{
+
+  return GST_STATE_CHANGE_SUCCESS;
+}
+
+static const GstQueryType *
+gst_sdi_mux_get_query_types (GstElement * element)
+{
+
+  return NULL;
+}
+
+static gboolean
+gst_sdi_mux_query (GstElement * element, GstQuery * query)
+{
+
+  return FALSE;
+}
+
+static GstFlowReturn
+gst_sdi_mux_chain (GstPad * pad, GstBuffer * buffer)
+{
+  GstSdiMux *sdimux;
+
+  sdimux = GST_SDI_MUX (gst_pad_get_parent (pad));
+
+  GST_DEBUG_OBJECT (sdimux, "chain");
+
+
+  gst_object_unref (sdimux);
+  return GST_FLOW_OK;
+}
+
+static gboolean
+gst_sdi_mux_sink_event (GstPad * pad, GstEvent * event)
+{
+  gboolean res;
+  GstSdiMux *sdimux;
+
+  sdimux = GST_SDI_MUX (gst_pad_get_parent (pad));
+
+  GST_DEBUG_OBJECT (sdimux, "event");
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_FLUSH_START:
+      res = gst_pad_push_event (sdimux->srcpad, event);
+      break;
+    case GST_EVENT_FLUSH_STOP:
+      res = gst_pad_push_event (sdimux->srcpad, event);
+      break;
+    case GST_EVENT_NEWSEGMENT:
+      res = gst_pad_push_event (sdimux->srcpad, event);
+      break;
+    case GST_EVENT_EOS:
+      res = gst_pad_push_event (sdimux->srcpad, event);
+      break;
+    default:
+      res = gst_pad_push_event (sdimux->srcpad, event);
+      break;
+  }
+
+  gst_object_unref (sdimux);
+  return TRUE;
+}
+
+static gboolean
+gst_sdi_mux_src_event (GstPad * pad, GstEvent * event)
+{
+  gboolean res;
+  GstSdiMux *sdimux;
+
+  sdimux = GST_SDI_MUX (gst_pad_get_parent (pad));
+
+  GST_DEBUG_OBJECT (sdimux, "event");
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_SEEK:
+      res = gst_pad_push_event (sdimux->sinkpad, event);
+      break;
+    default:
+      res = gst_pad_push_event (sdimux->sinkpad, event);
+      break;
+  }
+
+  gst_object_unref (sdimux);
+  return TRUE;
+}
diff --git a/gst/sdi/gstsdimux.h b/gst/sdi/gstsdimux.h
new file mode 100644
index 000000000..5955810d5
--- /dev/null
+++ b/gst/sdi/gstsdimux.h
@@ -0,0 +1,54 @@
+/* GStreamer
+ * Copyright (C) 2010 REAL_NAME <EMAIL_ADDRESS>
+ *
+ * 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.
+ */
+
+#ifndef _GST_SDI_MUX_H_
+#define _GST_SDI_MUX_H_
+
+#include <gst/gst.h>
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_SDI_MUX   (gst_sdi_mux_get_type())
+#define GST_SDI_MUX(obj)   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SDI_MUX,GstSdiMux))
+#define GST_SDI_MUX_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SDI_MUX,GstSdiMuxClass))
+#define GST_IS_SDI_MUX(obj)   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SDI_MUX))
+#define GST_IS_SDI_MUX_CLASS(obj)   (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SDI_MUX))
+
+typedef struct _GstSdiMux GstSdiMux;
+typedef struct _GstSdiMuxClass GstSdiMuxClass;
+
+struct _GstSdiMux
+{
+  GstElement base_sdimux;
+
+  GstPad *srcpad;
+  GstPad *sinkpad;
+};
+
+struct _GstSdiMuxClass
+{
+  GstElementClass base_sdimux_class;
+};
+
+GType gst_sdi_mux_get_type (void);
+
+G_END_DECLS
+
+#endif