initial commit

18 files changed, 1931 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a8f06d8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,23 @@
+aclocal.m4
+autom4te.cache
+autoregen.sh
+config.*
+configure
+autoregen.sh
+libtool
+INSTALL
+ABOUT-NLS
+Makefile
+Makefile.in
+depcomp
+install-sh
+ltmain.sh
+missing
+stamp-*
+*~
+*.lo
+*.la
+.deps
+.libs
+po
+compile
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a6b1eda
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "common"]
+	path = common
+	url = git://anongit.freedesktop.org/gstreamer/common
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..418e821
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1 @@
+Rob Clark <rob@ti.com>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..5ab7695
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,504 @@
+		  GNU LESSER GENERAL PUBLIC LICENSE
+		       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
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+
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..d72f0ea
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,3 @@
+2010-11-22  Rob Clark  <rob@ti.com>
+
+  	* initial version
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..1ea48a2
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+EXTRA_DIST = autogen.sh m4 po
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..3474a99
--- /dev/null
+++ b/NEWS
@@ -0,0 +1 @@
+Nothing much yet.
diff --git a/README b/README
new file mode 100644
index 0000000..696ecb9
--- /dev/null
+++ b/README
@@ -0,0 +1,22 @@
+WHAT IT IS
+----------
+
+gst-ducati is a plugin for using the hw accellerated codecs on IVA-HD via the
+codec-engine API.  Uses the libdce (distributed codec-engine) library to
+use the codec on ducati.
+
+WHY IS IT?
+----------
+
+An OpenMAX-like API is provided by TI along with modified gst-openmax
+plugins.  So gst-ducati is not needed in that sense.  But libdce and this
+was an interesting project for me to try on my free time.
+
+TODO
+----
++ flush (for seek/eos)
++ mpeg4, vc1, vp6, vp7
++ fallbacks for sink elements not providing TILER buffers to decode into
++ search the code for XXX or TODO ;-)
+
+
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..93f924a
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,121 @@
+#!/bin/sh
+# Run this to generate all the initial makefiles, etc.
+
+DIE=0
+package=gst-ducati
+srcfile=src/gstducati.c
+
+# Make sure we have common
+if test ! -f common/gst-autogen.sh;
+then
+  echo "+ Setting up common submodule"
+  git submodule init
+fi
+git submodule update
+
+# source helper functions
+if test ! -f common/gst-autogen.sh;
+then
+  echo There is something wrong with your source tree.
+  echo You are missing common/gst-autogen.sh
+  exit 1
+fi
+. common/gst-autogen.sh
+
+# install pre-commit hook for doing clean commits
+if test ! \( -x .git/hooks/pre-commit -a -L .git/hooks/pre-commit \);
+then
+    rm -f .git/hooks/pre-commit
+    ln -s ../../common/hooks/pre-commit.hook .git/hooks/pre-commit
+fi
+
+touch ChangeLog
+
+CONFIGURE_DEF_OPT='--enable-maintainer-mode'
+
+autogen_options $@
+
+printf "+ check for build tools"
+if test ! -z "$NOCHECK"; then echo " skipped"; else  echo; fi
+version_check "autoconf" "$AUTOCONF autoconf autoconf270 autoconf269 autoconf268 autoconf267 autoconf266 autoconf265 autoconf264 autoconf263 autoconf262 autoconf261 autoconf260" \
+              "ftp://ftp.gnu.org/pub/gnu/autoconf/" 2 60 || DIE=1
+version_check "automake" "$AUTOMAKE automake automake-1.11 automake-1.10" \
+              "ftp://ftp.gnu.org/pub/gnu/automake/" 1 10 || DIE=1
+version_check "autopoint" "autopoint" \
+              "ftp://ftp.gnu.org/pub/gnu/gettext/" 0 17 || DIE=1
+version_check "libtoolize" "$LIBTOOLIZE libtoolize glibtoolize" \
+              "ftp://ftp.gnu.org/pub/gnu/libtool/" 1 5 0 || DIE=1
+version_check "pkg-config" "" \
+              "http://www.freedesktop.org/software/pkgconfig" 0 8 0 || DIE=1
+
+die_check $DIE
+
+aclocal_check || DIE=1
+autoheader_check || DIE=1
+
+die_check $DIE
+
+# if no arguments specified then this will be printed
+if test -z "$*"; then
+  echo "+ checking for autogen.sh options"
+  echo "  This autogen script will automatically run ./configure as:"
+  echo "  ./configure $CONFIGURE_DEF_OPT"
+  echo "  To pass any additional options, please specify them on the $0"
+  echo "  command line."
+fi
+
+toplevel_check $srcfile
+
+# autopoint
+#    older autopoint (< 0.12) has a tendency to complain about mkinstalldirs
+if test -x mkinstalldirs; then rm mkinstalldirs; fi
+#    first remove patch if necessary, then run autopoint, then reapply
+if test -f po/Makefile.in.in;
+then
+  patch -p0 -R < common/gettext.patch
+fi
+tool_run "$autopoint --force"
+patch -p0 < common/gettext.patch
+
+tool_run "$libtoolize" "--copy --force"
+tool_run "$aclocal" "-I m4 -I common/m4 $ACLOCAL_FLAGS"
+tool_run "$autoheader"
+
+# touch the stamp-h.in build stamp so we don't re-run autoheader in maintainer mode -- wingo
+echo timestamp > stamp-h.in 2> /dev/null
+
+tool_run "$autoconf"
+tool_run "$automake" "-a -c"
+
+# if enable exists, add an -enable option for each of the lines in that file
+if test -f enable; then
+  for a in `cat enable`; do
+    CONFIGURE_FILE_OPT="--enable-$a"
+  done
+fi
+
+# if disable exists, add an -disable option for each of the lines in that file
+if test -f disable; then
+  for a in `cat disable`; do
+    CONFIGURE_FILE_OPT="$CONFIGURE_FILE_OPT --disable-$a"
+  done
+fi
+
+test -n "$NOCONFIGURE" && {
+  echo "+ skipping configure stage for package $package, as requested."
+  echo "+ autogen.sh done."
+  exit 0
+}
+
+echo "+ running configure ... "
+test ! -z "$CONFIGURE_DEF_OPT" && echo "  ./configure default flags: $CONFIGURE_DEF_OPT"
+test ! -z "$CONFIGURE_EXT_OPT" && echo "  ./configure external flags: $CONFIGURE_EXT_OPT"
+test ! -z "$CONFIGURE_FILE_OPT" && echo "  ./configure enable/disable flags: $CONFIGURE_FILE_OPT"
+echo
+
+./configure $CONFIGURE_DEF_OPT $CONFIGURE_EXT_OPT $CONFIGURE_FILE_OPT || {
+        echo "  configure failed"
+        exit 1
+}
+
+echo "Now type 'make' to compile $package."
diff --git a/common b/common
new file mode 160000
+Subproject 011bcc8a0fc7f798ee874a7ba899123fb2470e2
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..c70edfe
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,137 @@
+dnl required version of autoconf
+AC_PREREQ([2.53])
+
+dnl TODO: fill in your package name and package version here
+AC_INIT([gst-ducati],[0.10.0])
+
+dnl required versions of gstreamer and plugins-base
+GST_MAJORMINOR=0.10
+GST_REQUIRED=0.10.30
+
+AC_CONFIG_SRCDIR([src/gstducati.c])
+AC_CONFIG_HEADERS([config.h])
+
+dnl required version of automake
+AM_INIT_AUTOMAKE([1.10])
+
+dnl enable mainainer mode by default
+AM_MAINTAINER_MODE
+
+dnl sets host_* variables
+AC_CANONICAL_HOST
+
+dnl use pretty build output with automake >= 1.11
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],
+  [AM_DEFAULT_VERBOSITY=1
+   AC_SUBST(AM_DEFAULT_VERBOSITY)])
+
+dnl check for tools
+AC_PROG_CC
+AM_PROG_CC_C_O
+AC_PROG_INSTALL
+AC_PROG_LIBTOOL
+
+PKG_CHECK_MODULES([CHECK], [check], HAVE_CHECK=yes, HAVE_CHECK=no)
+
+dnl Keep correct libtool macros in-tree.
+AC_CONFIG_MACRO_DIR([m4])
+
+dnl initialize GStreamer macros
+AG_GST_INIT
+dnl define an ERROR_CFLAGS Makefile variable
+AG_GST_SET_ERROR_CFLAGS($GST_CVS)
+
+dnl set up gettext
+dnl the version check needs to stay here because autopoint greps for it
+AM_GNU_GETTEXT_VERSION([0.17])
+AM_GNU_GETTEXT([external])
+AG_GST_GETTEXT([gst-ducati-$GST_MAJORMINOR])
+
+dnl add GStreamer arguments
+AG_GST_ARG_DEBUG
+AG_GST_ARG_PROFILING
+AG_GST_ARG_VALGRIND
+AG_GST_ARG_GCOV
+
+AG_GST_ARG_WITH_PKG_CONFIG_PATH
+AG_GST_ARG_WITH_PACKAGE_NAME
+AG_GST_ARG_WITH_PACKAGE_ORIGIN
+
+dnl required version of libtool
+LT_PREREQ([2.2.6])
+LT_INIT
+
+dnl give error and exit if we don't have pkgconfig
+AC_CHECK_PROG(HAVE_PKGCONFIG, pkg-config, [ ], [
+  AC_MSG_ERROR([You need to have pkg-config installed!])
+])
+
+dnl Check for tiler memmgr
+PKG_CHECK_MODULES([MEMMGR], [libmemmgr])
+
+dnl Check for required codec-engine library..
+PKG_CHECK_MODULES(LIBDCE, [libdce >= 1.0.0])
+
+dnl Check for the required version of GStreamer core (and gst-plugins-base)
+dnl This will export GST_CFLAGS and GST_LIBS variables for use in Makefile.am
+PKG_CHECK_MODULES(GST, [
+  gstreamer-0.10 >= $GST_REQUIRED
+  gstreamer-base-0.10 >= $GST_REQUIRED
+], [
+  AC_SUBST(GST_CFLAGS)
+  AC_SUBST(GST_LIBS)
+], [
+  AC_MSG_ERROR([
+      You need to install or upgrade the GStreamer development
+      packages on your system. On debian-based systems these are
+      libgstreamer0.10-dev and libgstreamer-plugins-base0.10-dev.
+      on RPM-based systems gstreamer0.10-devel, libgstreamer0.10-devel
+      or similar. The minimum version required is $GST_REQUIRED.
+  ])
+])
+
+dnl set license and copyright notice
+GST_LICENSE="LGPL"
+AC_DEFINE_UNQUOTED(GST_LICENSE, "$GST_LICENSE", [GStreamer license])
+AC_SUBST(GST_LICENSE)
+
+dnl set GStreamer plug-in dir
+AG_GST_SET_PLUGINDIR
+
+dnl GST_OPTION_CFLAGS
+if test "x$USE_DEBUG" = xyes; then
+   PROFILE_CFLAGS="-g"
+fi
+AC_SUBST(PROFILE_CFLAGS)
+
+DEPRECATED_CFLAGS="-DGST_DISABLE_DEPRECATED"
+AC_SUBST(DEPRECATED_CFLAGS)
+
+dnl every flag in GST_OPTION_CFLAGS can be overridden at make time
+GST_OPTION_CFLAGS="\$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
+AC_SUBST(GST_OPTION_CFLAGS)
+
+dnl our libraries need to be versioned correctly
+AC_SUBST(GST_LT_LDFLAGS)
+
+dnl FIXME: do we want to rename to GST_ALL_* ?
+dnl prefer internal headers to already installed ones
+dnl also add builddir include for enumtypes and marshal
+dnl add GST_OPTION_CFLAGS, but overridable
+GST_CFLAGS="-I\$(top_srcdir)/gst-libs -I\$(top_builddir)/gst-libs $GST_CFLAGS \$(GST_OPTION_CFLAGS)"
+AC_SUBST(GST_CFLAGS)
+AC_SUBST(GST_LIBS)
+
+dnl LDFLAGS really should only contain flags, not libs - they get added before
+dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
+GST_ALL_LDFLAGS=""
+AC_SUBST(GST_ALL_LDFLAGS)
+
+dnl this really should only contain flags, not libs - they get added before
+dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
+GST_PLUGIN_LDFLAGS="-module -avoid-version -export-symbols-regex '^[_]*gst_plugin_desc\$\$' $GST_ALL_LDFLAGS"
+AC_SUBST(GST_PLUGIN_LDFLAGS)
+
+AC_CONFIG_FILES([Makefile src/Makefile])
+AC_OUTPUT
+
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..2ab0022
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,20 @@
+plugin_LTLIBRARIES = libgstducati.la
+
+# headers we need but don't want installed
+noinst_HEADERS = \
+	gstducatih264dec.h \
+	gstducatividdec.h \
+	gstducati.h
+
+# sources used to compile this plug-in
+libgstducati_la_SOURCES = \
+	gstducatih264dec.c \
+	gstducatividdec.c \
+	gstducati.c \
+	$(noinst_HEADERS)
+
+# compiler and linker flags used to compile this plugin, set in configure.ac
+libgstducati_la_CFLAGS = $(GST_CFLAGS) $(MEMMGR_CFLAGS) $(LIBDCE_CFLAGS)
+libgstducati_la_LIBADD = $(GST_LIBS) $(MEMMGR_LIBS) $(LIBDCE_LIBS)
+libgstducati_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(GST_ALL_LDFLAGS)
+libgstducati_la_LIBTOOLFLAGS = --tag=disable-static
diff --git a/src/gstducati.c b/src/gstducati.c
new file mode 100644
index 0000000..66d139b
--- /dev/null
+++ b/src/gstducati.c
@@ -0,0 +1,102 @@
+/*
+ * GStreamer
+ * Copyright (c) 2010, Texas Instruments Incorporated
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <gst/gst.h>
+
+#include "gstducatih264dec.h"
+
+GST_DEBUG_CATEGORY (gst_ducati_debug);
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  GST_DEBUG_CATEGORY_INIT (gst_ducati_debug, "ducati", 0, "ducati");
+
+  return gst_element_register (plugin, "ducatih264dec", GST_RANK_PRIMARY,
+      GST_TYPE_DUCATIH264DEC);
+}
+
+void *
+gst_ducati_alloc_1d (gint sz)
+{
+  MemAllocBlock block = {
+    .pixelFormat = PIXEL_FMT_PAGE,
+    .dim.len = sz,
+  };
+  return MemMgr_Alloc (&block, 1);
+}
+
+void *
+gst_ducati_alloc_2d (gint width, gint height)
+{
+  MemAllocBlock block[] = { {
+          .pixelFormat = PIXEL_FMT_8BIT,
+          .dim = {.area = {
+                      .width = width,
+                      .height = height,
+                  }}
+      }, {
+        .pixelFormat = PIXEL_FMT_16BIT,
+        .dim = {.area = {
+                    .width = width,
+                    .height = height / 2,
+                }}
+      }
+  };
+  return MemMgr_Alloc (block, 2);
+}
+
+XDAS_Int16
+gst_ducati_get_mem_type (SSPtr paddr)
+{
+  if ((0x60000000 <= paddr) && (paddr < 0x68000000))
+    return XDM_MEMTYPE_TILED8;
+  if ((0x68000000 <= paddr) && (paddr < 0x70000000))
+    return XDM_MEMTYPE_TILED16;
+  if ((0x70000000 <= paddr) && (paddr < 0x78000000))
+    return XDM_MEMTYPE_TILED32;
+  if ((0x78000000 <= paddr) && (paddr < 0x80000000))
+    return XDM_MEMTYPE_RAW;
+  return -1;
+}
+
+/* PACKAGE: this is usually set by autotools depending on some _INIT macro
+ * in configure.ac and then written into and defined in config.h, but we can
+ * just set it ourselves here in case someone doesn't use autotools to
+ * compile this code. GST_PLUGIN_DEFINE needs PACKAGE to be defined.
+ */
+#ifndef PACKAGE
+#  define PACKAGE "ducati"
+#endif
+
+GST_PLUGIN_DEFINE (
+    GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "ducati",
+    "Hardware accellerated codecs for OMAP4",
+    plugin_init,
+    VERSION,
+    "LGPL",
+    "GStreamer",
+    "http://gstreamer.net/"
+)
diff --git a/src/gstducati.h b/src/gstducati.h
new file mode 100644
index 0000000..9897eab
--- /dev/null
+++ b/src/gstducati.h
@@ -0,0 +1,47 @@
+/*
+ * GStreamer
+ * Copyright (c) 2010, Texas Instruments Incorporated
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __GST_DUCATI_H__
+#define __GST_DUCATI_H__
+
+#include <stdint.h>
+#include <string.h>
+
+#include <gst/gst.h>
+
+#include <tiler.h>
+#include <tilermem.h>
+#include <memmgr.h>
+#include <dce.h>
+#include <xdc/std.h>
+#include <ti/sdo/ce/Engine.h>
+#include <ti/sdo/ce/video3/viddec3.h>
+
+G_BEGIN_DECLS
+
+GST_DEBUG_CATEGORY_EXTERN (gst_ducati_debug);
+#define GST_CAT_DEFAULT gst_ducati_debug
+
+void * gst_ducati_alloc_1d (gint sz);
+void * gst_ducati_alloc_2d (gint width, gint height);
+XDAS_Int16 gst_ducati_get_mem_type (SSPtr paddr);
+
+G_END_DECLS
+
+#endif /* __GST_DUCATI_H__ */
diff --git a/src/gstducatih264dec.c b/src/gstducatih264dec.c
new file mode 100644
index 0000000..324826c
--- /dev/null
+++ b/src/gstducatih264dec.c
@@ -0,0 +1,126 @@
+/*
+ * GStreamer
+ * Copyright (c) 2010, Texas Instruments Incorporated
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/**
+ * SECTION:element-ducatih264dec
+ *
+ * FIXME:Describe ducatih264dec here.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m fakesrc ! ducatih264dec ! fakesink silent=TRUE
+ * ]|
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include "gstducatih264dec.h"
+
+
+#define PADX  32
+#define PADY  24
+
+
+GST_BOILERPLATE (GstDucatiH264Dec, gst_ducati_h264dec, GstDucatiVidDec,
+    GST_TYPE_DUCATIVIDDEC);
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-h264, "
+//        "alignment = au, "              /* only entire frames */
+//        "stream-format = byte-stream, " /* only byte-stream */
+        "width = (int)[ 16, 2048 ], "
+        "height = (int)[ 16, 2048 ], "
+        "framerate = (fraction)[ 0, max ];")
+    );
+
+/* GstDucatiVideDec vmethod implementations */
+
+static void
+gst_ducati_h264dec_update_buffer_size (GstDucatiVidDec * self)
+{
+  gint w = self->width;
+  gint h = self->height;
+
+  /* calculate output buffer parameters: */
+  self->padded_width = (w + (2 * PADX) + 127) & 0xFFFFFF80;
+  self->padded_height = h + 4 * PADY;
+  self->min_buffers = MIN (16, 32768 / ((w / 16) * (h / 16))) + 3;
+}
+
+static gboolean
+gst_ducati_h264dec_allocate_params (GstDucatiVidDec * self, gint params_sz,
+    gint dynparams_sz, gint status_sz, gint inargs_sz, gint outargs_sz)
+{
+  gboolean ret = parent_class->allocate_params (self,
+      sizeof (IH264VDEC_Params), sizeof (IH264VDEC_DynamicParams),
+      sizeof (IH264VDEC_Status), sizeof (IH264VDEC_InArgs),
+      sizeof (IH264VDEC_OutArgs));
+
+  if (ret) {
+    IH264VDEC_Params *params = (IH264VDEC_Params *) self->params;
+    self->params->displayDelay = IVIDDEC3_DISPLAY_DELAY_AUTO;
+    params->maxNumRefFrames = IH264VDEC_NUM_REFFRAMES_AUTO;
+    params->pConstantMemory = 0;
+  }
+
+  return ret;
+}
+
+/* GObject vmethod implementations */
+
+static void
+gst_ducati_h264dec_base_init (gpointer gclass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+  gst_element_class_set_details_simple (element_class,
+      "DucatiH264Dec",
+      "Codec/Decoder/Video",
+      "Decodes video in H.264/AVC format with ducati",
+      "Rob Clark <rob@ti.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+}
+
+static void
+gst_ducati_h264dec_class_init (GstDucatiH264DecClass * klass)
+{
+  GstDucatiVidDecClass *bclass = GST_DUCATIVIDDEC_CLASS (klass);
+  bclass->codec_name = "ivahd_h264dec";
+  bclass->update_buffer_size =
+      GST_DEBUG_FUNCPTR (gst_ducati_h264dec_update_buffer_size);
+  bclass->allocate_params =
+      GST_DEBUG_FUNCPTR (gst_ducati_h264dec_allocate_params);
+}
+
+static void
+gst_ducati_h264dec_init (GstDucatiH264Dec * self,
+    GstDucatiH264DecClass * gclass)
+{
+}
diff --git a/src/gstducatih264dec.h b/src/gstducatih264dec.h
new file mode 100644
index 0000000..ce0e636
--- /dev/null
+++ b/src/gstducatih264dec.h
@@ -0,0 +1,55 @@
+/*
+ * GStreamer
+ * Copyright (c) 2010, Texas Instruments Incorporated
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __GST_DUCATIH264DEC_H__
+#define __GST_DUCATIH264DEC_H__
+
+#include <gst/gst.h>
+
+#include "gstducatividdec.h"
+
+#include <ti/sdo/codecs/h264dec/ih264vdec.h>
+
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_DUCATIH264DEC              (gst_ducati_h264dec_get_type())
+#define GST_DUCATIH264DEC(obj)              (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_DUCATIH264DEC, GstDucatiH264Dec))
+#define GST_DUCATIH264DEC_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_DUCATIH264DEC, GstDucatiH264DecClass))
+#define GST_IS_DUCATIH264DEC(obj)           (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_DUCATIH264DEC))
+#define GST_IS_DUCATIH264DEC_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_DUCATIH264DEC))
+
+typedef struct _GstDucatiH264Dec      GstDucatiH264Dec;
+typedef struct _GstDucatiH264DecClass GstDucatiH264DecClass;
+
+struct _GstDucatiH264Dec
+{
+  GstDucatiVidDec parent;
+};
+
+struct _GstDucatiH264DecClass 
+{
+  GstDucatiVidDecClass parent_class;
+};
+
+GType gst_ducati_h264dec_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_DUCATIH264DEC_H__ */
diff --git a/src/gstducatividdec.c b/src/gstducatividdec.c
new file mode 100644
index 0000000..cac3c27
--- /dev/null
+++ b/src/gstducatividdec.c
@@ -0,0 +1,658 @@
+/*
+ * GStreamer
+ * Copyright (c) 2010, Texas Instruments Incorporated
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include "gstducatividdec.h"
+
+GST_BOILERPLATE (GstDucatiVidDec, gst_ducati_viddec, GstElement,
+    GST_TYPE_ELEMENT);
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV_STRIDED ("NV12", "[ 0, max ]"))
+    );
+
+/* helper functions */
+
+static void
+engine_close (GstDucatiVidDec * self)
+{
+  if (self->engine) {
+    Engine_close (self->engine);
+    self->engine = NULL;
+  }
+
+  if (self->params) {
+    dce_free (self->params);
+    self->params = NULL;
+  }
+
+  if (self->dynParams) {
+    dce_free (self->dynParams);
+    self->dynParams = NULL;
+  }
+
+  if (self->status) {
+    dce_free (self->status);
+    self->status = NULL;
+  }
+
+  if (self->inBufs) {
+    dce_free (self->inBufs);
+    self->inBufs = NULL;
+  }
+
+  if (self->outBufs) {
+    dce_free (self->outBufs);
+    self->outBufs = NULL;
+  }
+
+  if (self->inArgs) {
+    dce_free (self->inArgs);
+    self->inArgs = NULL;
+  }
+
+  if (self->outArgs) {
+    dce_free (self->outArgs);
+    self->outArgs = NULL;
+  }
+}
+
+static gboolean
+engine_open (GstDucatiVidDec * self)
+{
+  gboolean ret;
+
+  if (G_UNLIKELY (self->engine)) {
+    return TRUE;
+  }
+
+  GST_DEBUG_OBJECT (self, "opening engine");
+
+  self->engine = Engine_open ("ivahd_vidsvr", NULL, NULL);
+  if (G_UNLIKELY (!self->engine)) {
+    GST_ERROR_OBJECT (self, "could not create engine");
+    return FALSE;
+  }
+
+  ret = GST_DUCATIVIDDEC_GET_CLASS (self)->allocate_params (self,
+      sizeof (IVIDDEC3_Params), sizeof (IVIDDEC3_DynamicParams),
+      sizeof (IVIDDEC3_Status), sizeof (IVIDDEC3_InArgs),
+      sizeof (IVIDDEC3_OutArgs));
+
+  return ret;
+}
+
+static void
+codec_delete (GstDucatiVidDec * self)
+{
+  if (self->codec) {
+    //XXX this crashes ducati:
+    //VIDDEC3_delete(self->codec);
+    self->codec = NULL;
+  }
+
+  if (self->input) {
+    MemMgr_Free (self->input);
+    self->input = NULL;
+  }
+}
+
+static gboolean
+codec_create (GstDucatiVidDec * self)
+{
+  gint err;
+  const gchar *codec_name;
+
+  codec_delete (self);
+
+  if (G_UNLIKELY (!self->engine)) {
+    GST_ERROR_OBJECT (self, "no engine");
+    return FALSE;
+  }
+
+  /* these need to be set before VIDDEC3_create */
+  self->params->maxWidth = (self->width + 15) & ~0xf;   /* round up to MB */
+  self->params->maxHeight = (self->height + 15) & ~0xf; /* round up to MB */
+
+  codec_name = GST_DUCATIVIDDEC_GET_CLASS (self)->codec_name;
+
+  /* create codec: */
+  GST_DEBUG_OBJECT (self, "creating codec: %s", codec_name);
+  self->codec = VIDDEC3_create (self->engine, (char *)codec_name, self->params);
+
+  if (!self->codec) {
+    return FALSE;
+  }
+
+  err = VIDDEC3_control(self->codec, XDM_SETPARAMS, self->dynParams, self->status);
+  if (err) {
+    GST_ERROR_OBJECT (self, "failed XDM_SETPARAMS");
+    return FALSE;
+  }
+
+#if 0
+  /* not entirely sure why we need to call this here.. just copying omx.. */
+  err = VIDDEC3_control(self->codec, XDM_GETBUFINFO, self->dynParams, self->status);
+  if (err) {
+    GST_ERROR_OBJECT (self, "failed XDM_GETBUFINFO");
+    return FALSE;
+  }
+#endif
+
+  /* allocate input buffer and initialize inBufs: */
+  self->inBufs->numBufs = 1;
+  self->input = gst_ducati_alloc_1d (self->width * self->height);
+  self->inBufs->descs[0].buf = (XDAS_Int8 *) TilerMem_VirtToPhys (self->input);
+  self->inBufs->descs[0].memType = XDM_MEMTYPE_RAW;
+
+  return TRUE;
+}
+
+static XDAS_Int32
+codec_prepare_outbuf (GstDucatiVidDec * self, GstBuffer * buf)
+{
+  XDAS_Int16 y_type, uv_type;
+  guint8 *y_vaddr, *uv_vaddr;
+  SSPtr y_paddr, uv_paddr;
+
+  y_vaddr = GST_BUFFER_DATA (buf);
+  uv_vaddr = y_vaddr + self->stride * self->padded_height;
+
+  y_paddr = TilerMem_VirtToPhys (y_vaddr);
+  uv_paddr = TilerMem_VirtToPhys (uv_vaddr);
+
+  y_type = gst_ducati_get_mem_type (y_paddr);
+  uv_type = gst_ducati_get_mem_type (uv_paddr);
+
+  if ((y_type < 0) || (uv_type < 0)) {
+    return 0;
+  }
+
+  if (!self->outBufs->numBufs) {
+    /* initialize output buffer type */
+    self->outBufs->numBufs = 2;
+    self->outBufs->descs[0].memType = y_type;
+    self->outBufs->descs[0].bufSize.tileMem.width = self->padded_width;
+    self->outBufs->descs[0].bufSize.tileMem.height = self->padded_height;
+    self->outBufs->descs[1].memType = uv_type;
+    /* note that UV interleaved width is same a Y: */
+    self->outBufs->descs[1].bufSize.tileMem.width = self->padded_width;
+    self->outBufs->descs[1].bufSize.tileMem.height = self->padded_height / 2;
+  } else {
+    /* verify output buffer type matches what we've already given
+     * to the codec
+     */
+    // TODO
+  }
+
+  self->outBufs->descs[0].buf = (XDAS_Int8 *)y_paddr;
+  self->outBufs->descs[1].buf = (XDAS_Int8 *)uv_paddr;
+
+  return (XDAS_Int32) buf;      // XXX use lookup table
+}
+
+static GstBuffer *
+codec_get_outbuf (GstDucatiVidDec * self, XDAS_Int32 id)
+{
+  GstBuffer *buf = (GstBuffer *) id;    // XXX use lookup table
+  if (buf) {
+    gst_buffer_ref (buf);
+  }
+  return buf;
+}
+
+static void
+codec_unlock_outbuf (GstDucatiVidDec * self, XDAS_Int32 id)
+{
+  GstBuffer *buf = (GstBuffer *) id;    // XXX use lookup table
+  if (buf) {
+    gst_buffer_unref (buf);
+  }
+}
+
+static gboolean
+codec_flush (GstDucatiVidDec * self)
+{
+  if (G_UNLIKELY (!self->codec)) {
+    GST_WARNING_OBJECT (self, "no codec");
+    return TRUE;
+  }
+
+  GST_WARNING_OBJECT (self, "TODO");
+
+  return FALSE;
+}
+
+/* GstDucatiVidDec vmethod default implementations */
+
+static gboolean
+gst_ducati_viddec_allocate_params (GstDucatiVidDec * self, gint params_sz,
+    gint dynparams_sz, gint status_sz, gint inargs_sz, gint outargs_sz)
+{
+
+  /* allocate params: */
+  self->params = dce_alloc (params_sz);
+  if (G_UNLIKELY (!self->params)) {
+    return FALSE;
+  }
+  self->params->size = params_sz;
+  self->params->maxFrameRate = 30000;
+  //h264, mpeg4:
+  //note mpeg4 and h263 are same..
+  self->params->maxBitRate = 10000000;
+  //vc1:
+  //self->params->maxBitRate = 45000000;
+
+  self->params->dataEndianness = XDM_BYTE;
+  self->params->forceChromaFormat = XDM_YUV_420SP;
+  self->params->operatingMode = IVIDEO_DECODE_ONLY;
+
+  //mpeg4:
+  //self->params->displayDelay = IVIDDEC3_DISPLAY_DELAY_1;
+
+  //vc1:
+  //self->params->displayDelay = IVIDDEC3_DISPLAY_DELAY_1;
+
+
+  self->params->displayBufsMode = IVIDDEC3_DISPLAYBUFS_EMBEDDED;
+  self->params->inputDataMode = IVIDEO_ENTIREFRAME;
+  self->params->outputDataMode = IVIDEO_ENTIREFRAME;
+  self->params->numInputDataUnits = 0;
+  self->params->numOutputDataUnits = 0;
+
+  //vp6, vp7:
+  //self->params->numInputDataUnits = 1;
+  //self->params->numOutputDataUnits = 1;
+
+  self->params->metadataType[0] = IVIDEO_METADATAPLANE_NONE;
+  self->params->metadataType[1] = IVIDEO_METADATAPLANE_NONE;
+  self->params->metadataType[2] = IVIDEO_METADATAPLANE_NONE;
+  self->params->errorInfoMode = IVIDEO_ERRORINFO_OFF;
+
+  //mpeg4:
+  //((IMPEG4VDEC_Params *) self->params)->outloopDeBlocking = 0;
+  //((IMPEG4VDEC_Params *) self->params)->sorensonSparkStream = 0;
+  //((IMPEG4VDEC_Params *) self->params)->ErrorConcealmentON = 1;
+
+
+  /* allocate dynParams: */
+  self->dynParams = dce_alloc (dynparams_sz);
+  if (G_UNLIKELY (!self->dynParams)) {
+    return FALSE;
+  }
+  self->dynParams->size = dynparams_sz;
+  self->dynParams->decodeHeader = XDM_DECODE_AU;
+  self->dynParams->displayWidth = 0;
+  self->dynParams->frameSkipMode = IVIDEO_NO_SKIP;
+  self->dynParams->newFrameFlag = XDAS_TRUE;
+
+  //mpeg4:
+  //self->dynParams->lateAcquireArg = IRES_HDVICP2_UNKNOWNLATEACQUIREARG;
+
+  /* allocate status: */
+  self->status = dce_alloc (status_sz);
+  if (G_UNLIKELY (!self->status)) {
+    return FALSE;
+  }
+  self->status->size = status_sz;
+
+  /* allocate inBufs/outBufs: */
+  self->inBufs = dce_alloc (sizeof (XDM2_BufDesc));
+  self->outBufs = dce_alloc (sizeof (XDM2_BufDesc));
+  if (G_UNLIKELY (!self->inBufs) || G_UNLIKELY (!self->outBufs)) {
+    return FALSE;
+  }
+
+  /* allocate inArgs/outArgs: */
+  self->inArgs = dce_alloc (inargs_sz);
+  self->outArgs = dce_alloc (outargs_sz);
+  if (G_UNLIKELY (!self->inArgs) || G_UNLIKELY (!self->outArgs)) {
+    return FALSE;
+  }
+  self->inArgs->size = inargs_sz;
+  self->outArgs->size = outargs_sz;
+}
+
+static GstBuffer *
+gst_ducati_viddec_push_input (GstDucatiVidDec * self, GstBuffer * buf)
+{
+  /* just copy entire buffer */
+  self->inArgs->numBytes = GST_BUFFER_SIZE (buf);
+  self->inBufs->descs[0].bufSize.bytes = self->inArgs->numBytes;
+  GST_DEBUG_OBJECT (self, "push: %d bytes)", self->inArgs->numBytes);
+  memcpy (self->input, GST_BUFFER_DATA (buf), self->inArgs->numBytes);
+  gst_buffer_unref (buf);
+  return NULL;
+}
+
+/* GstElement vmethod implementations */
+
+static gboolean
+gst_ducati_viddec_set_caps (GstPad * pad, GstCaps * caps)
+{
+  gboolean ret = TRUE;
+  GstDucatiVidDec *self = GST_DUCATIVIDDEC (gst_pad_get_parent (pad));
+  GstStructure *s;
+
+  g_return_val_if_fail (caps, FALSE);
+  g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
+
+  s = gst_caps_get_structure (caps, 0);
+
+  if (pad == self->sinkpad) {
+    gint width, height, frn, frd;
+    GST_INFO_OBJECT (self, "setcaps (sink): %" GST_PTR_FORMAT, caps);
+
+    if (gst_structure_get_int (s, "width", &width) &&
+        gst_structure_get_int (s, "height", &height) &&
+        gst_structure_get_fraction (s, "framerate", &frn, &frd)) {
+      GstCaps *outcaps;
+
+      /* ok, these caps seem sane.. grab the required values and construct
+       * appropriate output caps
+       */
+      self->width = width;
+      self->height = height;
+      self->stride = 4096;      /* TODO: don't hardcode */
+
+      /* update output/padded sizes:
+       */
+      GST_DUCATIVIDDEC_GET_CLASS (self)->update_buffer_size (self);
+
+      self->outsize =
+          GST_ROUND_UP_2 (self->stride * self->padded_height * 3) / 2;
+
+      outcaps = gst_caps_new_simple ("video/x-raw-yuv-strided",
+          "rowstride", G_TYPE_INT, self->stride,
+          "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N','V','1','2'),
+          "width", G_TYPE_INT, self->padded_width,
+          "height", G_TYPE_INT, self->padded_height,
+          "framerate", GST_TYPE_FRACTION, frn, frd,
+          NULL);
+
+      GST_DEBUG_OBJECT (self, "outcaps: %" GST_PTR_FORMAT, outcaps);
+
+      ret = gst_pad_set_caps (self->srcpad, outcaps);
+      gst_caps_unref (outcaps);
+
+      if (!ret) {
+        GST_WARNING_OBJECT (self, "failed to set caps");
+        return FALSE;
+      }
+    } else {
+      GST_WARNING_OBJECT (self, "missing required fields");
+      return FALSE;
+    }
+  } else {
+    GST_INFO_OBJECT (self, "setcaps (src): %" GST_PTR_FORMAT, caps);
+    // XXX check to make sure caps are ok.. keep track if we
+    // XXX need to handle unstrided buffers..
+    GST_WARNING_OBJECT (self, "TODO");
+  }
+
+  gst_object_unref (self);
+
+  return gst_pad_set_caps (pad, caps);
+}
+
+static gboolean
+gst_ducati_viddec_query (GstPad * pad, GstQuery * query)
+{
+  GstDucatiVidDec *self = GST_DUCATIVIDDEC (GST_OBJECT_PARENT (pad));
+
+  switch (GST_QUERY_TYPE (query)) {
+    case GST_QUERY_BUFFERS:
+      GST_DEBUG_OBJECT (self, "min buffers: %d", self->min_buffers);
+      gst_query_set_buffers_count (query, self->min_buffers);
+
+      GST_DEBUG_OBJECT (self, "min dimensions: %dx%d",
+          self->padded_width, self->padded_height);
+      gst_query_set_buffers_dimensions (query,
+          self->padded_width, self->padded_height);
+      return TRUE;
+    default:
+      return FALSE;
+  }
+}
+
+static GstFlowReturn
+gst_ducati_viddec_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstDucatiVidDec *self = GST_DUCATIVIDDEC (GST_OBJECT_PARENT (pad));
+  GstFlowReturn ret;
+  Int32 err;
+  gint i;
+  GstBuffer *outbuf = NULL;
+
+  if (G_UNLIKELY (!self->engine)) {
+    GST_ERROR_OBJECT (self, "no engine");
+    return GST_FLOW_ERROR;
+  }
+
+  /* do this before creating codec to ensure reverse caps negotiation
+   * happens first:
+   */
+  ret = gst_pad_alloc_buffer_and_set_caps (self->srcpad, 0, self->outsize,
+      GST_PAD_CAPS (self->srcpad), &outbuf);
+
+  if (ret != GST_FLOW_OK) {
+    /* TODO: if we had our own buffer class, we could allocate our own
+     * output buffer from TILER...
+     */
+ GST_WARNING_OBJECT (self, "ret=%d", ret);
+    GST_WARNING_OBJECT (self, "TODO: allocate output TILER buffer");
+    return ret;
+  }
+
+  if (G_UNLIKELY (!self->codec)) {
+    if (!codec_create (self)) {
+      GST_ERROR_OBJECT (self, "could not create codec");
+      return GST_FLOW_ERROR;
+    }
+  }
+
+  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+  GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
+
+  self->inArgs->inputID = codec_prepare_outbuf (self, outbuf);
+  if (!self->inArgs->inputID) {
+    GST_ERROR_OBJECT (self, "could not prepare output buffer");
+    return GST_FLOW_ERROR;
+  }
+
+  buf = GST_DUCATIVIDDEC_GET_CLASS (self)->push_input (self, buf);
+
+  if (buf) {
+    // XXX
+    GST_WARNING_OBJECT (self, "TODO.. can't push more than one.. need loop");
+    gst_buffer_unref (buf);
+    buf = NULL;
+  }
+
+  //XXX t = mark (NULL);
+  err = VIDDEC3_process (self->codec,
+      self->inBufs, self->outBufs,
+      self->inArgs, self->outArgs);
+  //XXX GST_DEBUG_OBJECT (self, "processed returned in: %dus", mark (&t));
+  if (err) {
+    GST_ERROR_OBJECT (self, "process returned error: %d %08x",
+        err, self->outArgs->extendedError);
+    return GST_FLOW_ERROR;
+  }
+
+  for (i = 0; self->outArgs->outputID[i]; i++) {
+#if 0
+    /* calculate offset to region of interest */
+    XDM_Rect *r = &(outArgs->displayBufs.bufDesc[0].activeFrameRegion);
+    int yoff = (r->topLeft.y * 4096) + r->topLeft.x;
+    int uvoff = (r->topLeft.y * 4096 / 2) + r->topLeft.x;
+    // XXX do something..
+#endif
+
+    outbuf = codec_get_outbuf (self, self->outArgs->outputID[i]);
+    gst_pad_push (self->srcpad, outbuf);
+  }
+
+  for (i = 0; self->outArgs->freeBufID[i]; i++) {
+    codec_unlock_outbuf (self, self->outArgs->freeBufID[i]);
+  }
+
+  if (self->outArgs->outBufsInUseFlag) {
+    GST_WARNING_OBJECT (self, "TODO... outBufsInUseFlag");      // XXX
+  }
+
+  return GST_FLOW_OK;
+}
+
+static gboolean
+gst_ducati_viddec_event (GstPad * pad, GstEvent * event)
+{
+  GstDucatiVidDec *self = GST_DUCATIVIDDEC (GST_OBJECT_PARENT (pad));
+  gboolean ret = TRUE;
+
+  GST_INFO_OBJECT (self, "begin: event=%s", GST_EVENT_TYPE_NAME (event));
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_EOS:
+    case GST_EVENT_FLUSH_STOP:
+      if (!codec_flush (self)) {
+        GST_ERROR_OBJECT (self, "could not flush");
+        return FALSE;
+      }
+      /* fall-through */
+    default:
+      ret = gst_pad_push_event (self->srcpad, event);
+      break;
+  }
+
+  GST_LOG_OBJECT (self, "end");
+
+  return ret;
+}
+
+static GstStateChangeReturn
+gst_ducati_viddec_change_state (GstElement * element,
+    GstStateChange transition)
+{
+  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+  GstDucatiVidDec *self = GST_DUCATIVIDDEC (element);
+
+  GST_INFO_OBJECT (self, "begin: changing state %s -> %s",
+      gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
+      gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      if (!engine_open (self)) {
+        GST_ERROR_OBJECT (self, "could not open");
+        return GST_STATE_CHANGE_FAILURE;
+      }
+      break;
+    default:
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  if (ret == GST_STATE_CHANGE_FAILURE)
+    goto leave;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      codec_delete (self);
+      engine_close (self);
+      break;
+    default:
+      break;
+  }
+
+leave:
+  GST_LOG_OBJECT (self, "end");
+
+  return ret;
+}
+
+/* GObject vmethod implementations */
+
+static void
+gst_ducati_viddec_finalize (GObject * obj)
+{
+  GstDucatiVidDec *self = GST_DUCATIVIDDEC (obj);
+
+  codec_delete (self);
+  engine_close (self);
+
+  G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+static void
+gst_ducati_viddec_base_init (gpointer gclass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+}
+
+static void
+gst_ducati_viddec_class_init (GstDucatiVidDecClass * klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+  gobject_class->finalize = gst_ducati_viddec_finalize;
+  gstelement_class->change_state = gst_ducati_viddec_change_state;
+
+  klass->allocate_params =
+      GST_DEBUG_FUNCPTR (gst_ducati_viddec_allocate_params);
+  klass->push_input =
+      GST_DEBUG_FUNCPTR (gst_ducati_viddec_push_input);
+}
+
+static void
+gst_ducati_viddec_init (GstDucatiVidDec * self, GstDucatiVidDecClass * klass)
+{
+  GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+  self->sinkpad = gst_pad_new_from_template (
+      gst_element_class_get_pad_template (gstelement_class, "sink"), "sink");
+  gst_pad_set_setcaps_function (self->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_ducati_viddec_set_caps));
+  gst_pad_set_chain_function (self->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_ducati_viddec_chain));
+  gst_pad_set_event_function (self->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_ducati_viddec_event));
+
+  self->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
+  gst_pad_set_setcaps_function (self->srcpad,
+      GST_DEBUG_FUNCPTR (gst_ducati_viddec_set_caps));
+  gst_pad_set_query_function (self->srcpad,
+          GST_DEBUG_FUNCPTR (gst_ducati_viddec_query));
+
+  gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
+  gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
+}
diff --git a/src/gstducatividdec.h b/src/gstducatividdec.h
new file mode 100644
index 0000000..dfb505a
--- /dev/null
+++ b/src/gstducatividdec.h
@@ -0,0 +1,105 @@
+/*
+ * GStreamer
+ * Copyright (c) 2010, Texas Instruments Incorporated
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation
+ * version 2.1 of the License.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __GST_DUCATIVIDDEC_H__
+#define __GST_DUCATIVIDDEC_H__
+
+#include <gst/gst.h>
+
+#include "gstducati.h"
+
+
+G_BEGIN_DECLS
+
+// XXX move these
+GST_DEBUG_CATEGORY_EXTERN (gst_ducati_debug);
+
+
+#define GST_TYPE_DUCATIVIDDEC               (gst_ducati_viddec_get_type())
+#define GST_DUCATIVIDDEC(obj)               (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_DUCATIVIDDEC, GstDucatiVidDec))
+#define GST_DUCATIVIDDEC_CLASS(klass)       (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_DUCATIVIDDEC, GstDucatiVidDecClass))
+#define GST_IS_DUCATIVIDDEC(obj)            (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_DUCATIVIDDEC))
+#define GST_IS_DUCATIVIDDEC_CLASS(klass)    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_DUCATIVIDDEC))
+#define GST_DUCATIVIDDEC_GET_CLASS(obj)     (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_DUCATIVIDDEC, GstDucatiVidDecClass))
+
+typedef struct _GstDucatiVidDec      GstDucatiVidDec;
+typedef struct _GstDucatiVidDecClass GstDucatiVidDecClass;
+
+struct _GstDucatiVidDec
+{
+  GstElement parent;
+
+  GstPad *sinkpad, *srcpad;
+
+  /* minimum output size required by the codec: */
+  gint outsize;
+
+  /* minimum number of buffers required by the codec: */
+  gint min_buffers;
+
+  /* input (unpadded) size of video: */
+  gint width, height;
+
+  /* output (padded) size including any codec padding: */
+  gint padded_width, padded_height;
+
+  /* output stride (>= padded_width) */
+  gint stride;
+
+  /* input buffer, allocated when codec is created: */
+  guint8 *input;
+
+  Engine_Handle           engine;
+  VIDDEC3_Handle          codec;
+  VIDDEC3_Params         *params;
+  VIDDEC3_DynamicParams  *dynParams;
+  VIDDEC3_Status         *status;
+  XDM2_BufDesc           *inBufs;
+  XDM2_BufDesc           *outBufs;
+  VIDDEC3_InArgs         *inArgs;
+  VIDDEC3_OutArgs        *outArgs;
+};
+
+struct _GstDucatiVidDecClass
+{
+  GstElementClass parent_class;
+
+  const gchar *codec_name;
+
+  /**
+   * Called when the input buffer size changes, to recalculate codec required
+   * output buffer size and minimum count
+   */
+  void (*update_buffer_size) (GstDucatiVidDec * self);
+
+  gboolean (*allocate_params) (GstDucatiVidDec * self, gint params_sz,
+      gint dynparams_sz, gint status_sz, gint inargs_sz, gint outargs_sz);
+
+  /**
+   * Push input data into codec's input buffer, returning a sub-buffer of
+   * any remaining data, or NULL if none.  Consumes reference to 'buf'
+   */
+  GstBuffer * (*push_input) (GstDucatiVidDec * self, GstBuffer * buf);
+};
+
+GType gst_ducati_viddec_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_DUCATIVIDDEC_H__ */