baseparse: remove -bad version of baseparse library, now in core

7 files changed, 5 insertions, 4085 deletions

diff --git a/Makefile.am b/Makefile.am
index 27200c59b..daeff6fe2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -56,6 +56,7 @@ CRUFT_FILES = \
 	$(top_builddir)/gst/shapewipe/.libs/*.{so,dll,DLL,dylib} \
 	$(top_builddir)/gst/valve/.libs/*.{so,dll,DLL,dylib} \
 	$(top_builddir)/gst/videoparsers/.libs/libgsth263parse* \
+	$(top_builddir)/gst-libs/gst/baseparse/.libs/libgstbaseparse* \
 	$(top_builddir)/sys/oss4/.libs/*.{so,dll,DLL,dylib} \
 	$(top_builddir)/tests/check/elements/{aac,ac3,amr,flac,mpegaudio,dca}parse \
 	$(top_builddir)/tests/check/elements/autocolorspace \
@@ -78,6 +79,7 @@ CRUFT_DIRS = \
 	$(top_srcdir)/gst/selector \
 	$(top_srcdir)/gst/shapewipe \
 	$(top_srcdir)/gst/valve \
+	$(top_srcdir)/gst-libs/gst/baseparse \
 	$(top_srcdir)/tests/examples/shapewipe \
 	$(top_srcdir)/tests/examples/switch \
 	$(top_srcdir)/tests/examples/jack \
diff --git a/configure.ac b/configure.ac
index d454f0867..fe211c27d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1810,7 +1810,6 @@ gst/y4m/Makefile
 gst-libs/Makefile
 gst-libs/gst/Makefile
 gst-libs/gst/basecamerabinsrc/Makefile
-gst-libs/gst/baseparse/Makefile
 gst-libs/gst/interfaces/Makefile
 gst-libs/gst/signalprocessor/Makefile
 gst-libs/gst/video/Makefile
diff --git a/gst-libs/gst/Makefile.am b/gst-libs/gst/Makefile.am
index 92d951cc8..f58086ca5 100644
--- a/gst-libs/gst/Makefile.am
+++ b/gst-libs/gst/Makefile.am
@@ -2,8 +2,8 @@ if BUILD_EXPERIMENTAL
 EXPERIMENTAL_LIBS=basecamerabinsrc
 endif
 
-SUBDIRS = baseparse interfaces signalprocessor video $(EXPERIMENTAL_LIBS)
+SUBDIRS = interfaces signalprocessor video $(EXPERIMENTAL_LIBS)
 
 noinst_HEADERS = gst-i18n-plugin.h gettext.h
-DIST_SUBDIRS = baseparse interfaces signalprocessor video basecamerabinsrc
+DIST_SUBDIRS = interfaces signalprocessor video basecamerabinsrc
 
diff --git a/gst-libs/gst/baseparse/Makefile.am b/gst-libs/gst/baseparse/Makefile.am
deleted file mode 100644
index e44a78b0a..000000000
--- a/gst-libs/gst/baseparse/Makefile.am
+++ /dev/null
@@ -1,20 +0,0 @@
-
-lib_LTLIBRARIES = libgstbaseparse-@GST_MAJORMINOR@.la
-
-CLEANFILES = $(BUILT_SOURCES)
-
-libgstbaseparse_@GST_MAJORMINOR@_la_SOURCES = \
-	gstbaseparse.c
-
-libgstbaseparse_@GST_MAJORMINOR@includedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/baseparse
-libgstbaseparse_@GST_MAJORMINOR@include_HEADERS = \
-	gstbaseparse.h
-
-libgstbaseparse_@GST_MAJORMINOR@_la_CFLAGS = \
-	$(GST_PLUGINS_BAD_CFLAGS) \
-	$(GST_PLUGINS_BASE_CFLAGS) \
-	-DGST_USE_UNSTABLE_API \
-	$(GST_CFLAGS)
-libgstbaseparse_@GST_MAJORMINOR@_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_BASE_LIBS) $(GST_LIBS)
-libgstbaseparse_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)
-
diff --git a/gst-libs/gst/baseparse/gstbaseparse.c b/gst-libs/gst/baseparse/gstbaseparse.c
deleted file mode 100644
index e465529db..000000000
--- a/gst-libs/gst/baseparse/gstbaseparse.c
+++ /dev/null
@@ -1,3717 +0,0 @@
-/* GStreamer
- * Copyright (C) 2008 Nokia Corporation. All rights reserved.
- *   Contact: Stefan Kost <stefan.kost@nokia.com>
- * Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
- *
- * 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:gstbaseparse
- * @short_description: Base class for stream parsers
- * @see_also: #GstBaseTransform
- *
- * This base class is for parser elements that process data and splits it
- * into separate audio/video/whatever frames.
- *
- * It provides for:
- * <itemizedlist>
- *   <listitem><para>One sinkpad and one srcpad</para></listitem>
- *   <listitem><para>Handles state changes</para></listitem>
- *   <listitem><para>Does flushing</para></listitem>
- *   <listitem><para>Push mode</para></listitem>
- *   <listitem><para>Pull mode</para></listitem>
- *   <listitem><para>Handles events (NEWSEGMENT/EOS/FLUSH)</para></listitem>
- *   <listitem><para>Handles seeking in both modes</para></listitem>
- *   <listitem><para>
- *        Handles POSITION/DURATION/SEEKING/FORMAT/CONVERT queries
- *   </para></listitem>
- * </itemizedlist>
- *
- * The purpose of this base class is to provide a basic functionality of
- * a parser and share a lot of rather complex code.
- *
- * Description of the parsing mechanism:
- * <orderedlist>
- * <listitem>
- *   <itemizedlist><title>Set-up phase</title>
- *   <listitem><para>
- *     GstBaseParse class calls @set_sink_caps to inform the subclass about
- *     incoming sinkpad caps. Subclass should set the srcpad caps accordingly.
- *   </para></listitem>
- *   <listitem><para>
- *     GstBaseParse calls @start to inform subclass that data processing is
- *     about to start now.
- *   </para></listitem>
- *   <listitem><para>
- *      At least in this point subclass needs to tell the GstBaseParse class
- *      how big data chunks it wants to receive (min_frame_size). It can do
- *      this with @gst_base_parse_set_min_frame_size.
- *   </para></listitem>
- *   <listitem><para>
- *      GstBaseParse class sets up appropriate data passing mode (pull/push)
- *      and starts to process the data.
- *   </para></listitem>
- *   </itemizedlist>
- * </listitem>
- * <listitem>
- *   <itemizedlist>
- *   <title>Parsing phase</title>
- *     <listitem><para>
- *       GstBaseParse gathers at least min_frame_size bytes of data either
- *       by pulling it from upstream or collecting buffers into internal
- *       #GstAdapter.
- *     </para></listitem>
- *     <listitem><para>
- *       A buffer of (at least) min_frame_size bytes is passed to subclass with
- *       @check_valid_frame. Subclass checks the contents and returns TRUE
- *       if the buffer contains a valid frame. It also needs to set the
- *       @framesize according to the detected frame size. If buffer didn't
- *       contain a valid frame, this call must return FALSE and optionally
- *       set the @skipsize value to inform base class that how many bytes
- *       it needs to skip in order to find a valid frame. @framesize can always
- *       indicate a new minimum for current frame parsing.  The passed buffer
- *       is read-only.  Note that @check_valid_frame might receive any small
- *       amount of input data when leftover data is being drained (e.g. at EOS).
- *     </para></listitem>
- *     <listitem><para>
- *       After valid frame is found, it will be passed again to subclass with
- *       @parse_frame call. Now subclass is responsible for parsing the
- *       frame contents and setting the caps, and buffer metadata (e.g.
- *       buffer timestamp and duration, or keyframe if applicable).
- *       (although the latter can also be done by GstBaseParse if it is
- *       appropriately configured, see below).  Frame is provided with
- *       timestamp derived from upstream (as much as generally possible),
- *       duration obtained form configuration (see below), and offset
- *       if meaningful (in pull mode).
- *     </para></listitem>
- *     <listitem><para>
- *       Finally the buffer can be pushed downstream and parsing loop starts
- *       over again.  Just prior to actually pushing the buffer in question,
- *       it is passed to @pre_push_buffer which gives subclass yet one
- *       last chance to examine buffer metadata, or to send some custom (tag)
- *       events, or to perform custom (segment) filtering.
- *     </para></listitem>
- *     <listitem><para>
- *       During the parsing process GstBaseParseClass will handle both srcpad and
- *       sinkpad events. They will be passed to subclass if @event or
- *       @src_event callbacks have been provided.
- *     </para></listitem>
- *   </itemizedlist>
- * </listitem>
- * <listitem>
- *   <itemizedlist><title>Shutdown phase</title>
- *   <listitem><para>
- *     GstBaseParse class calls @stop to inform the subclass that data
- *     parsing will be stopped.
- *   </para></listitem>
- *   </itemizedlist>
- * </listitem>
- * </orderedlist>
- *
- * Subclass is responsible for providing pad template caps for
- * source and sink pads. The pads need to be named "sink" and "src". It also
- * needs to set the fixed caps on srcpad, when the format is ensured (e.g.
- * when base class calls subclass' @set_sink_caps function).
- *
- * This base class uses GST_FORMAT_DEFAULT as a meaning of frames. So,
- * subclass conversion routine needs to know that conversion from
- * GST_FORMAT_TIME to GST_FORMAT_DEFAULT must return the
- * frame number that can be found from the given byte position.
- *
- * GstBaseParse uses subclasses conversion methods also for seeking (or otherwise
- * uses its own default one, see also below).
- *
- * Subclass @start and @stop functions will be called to inform the beginning
- * and end of data processing.
- *
- * Things that subclass need to take care of:
- * <itemizedlist>
- *   <listitem><para>Provide pad templates</para></listitem>
- *   <listitem><para>
- *      Fixate the source pad caps when appropriate
- *   </para></listitem>
- *   <listitem><para>
- *      Inform base class how big data chunks should be retrieved. This is
- *      done with @gst_base_parse_set_min_frame_size function.
- *   </para></listitem>
- *   <listitem><para>
- *      Examine data chunks passed to subclass with @check_valid_frame
- *      and tell if they contain a valid frame
- *   </para></listitem>
- *   <listitem><para>
- *      Set the caps and timestamp to frame that is passed to subclass with
- *      @parse_frame function.
- *   </para></listitem>
- *   <listitem><para>Provide conversion functions</para></listitem>
- *   <listitem><para>
- *      Update the duration information with @gst_base_parse_set_duration
- *   </para></listitem>
- *   <listitem><para>
- *      Optionally passthrough using @gst_base_parse_set_format
- *   </para></listitem>
- *   <listitem><para>
- *      Configure various baseparse parameters using @gst_base_parse_set_seek and
- *      @gst_base_parse_set_frame_props.
- *   </para></listitem>
- *   <listitem><para>
- *      In particular, if subclass is unable to determine a duration, but
- *      parsing (or specs) yields a frames per seconds rate, then this can be
- *      provided to GstBaseParse to enable it to cater for
- *      buffer time metadata (which will be taken from upstream as much as possible).
- *      Internally keeping track of frame durations and respective
- *      sizes that have been pushed provides GstBaseParse with an estimated bitrate.
- *      A default @convert (used if not overriden) will then use these
- *      rates to perform obvious conversions.  These rates are also used to update
- *      (estimated) duration at regular frame intervals.
- *   </para></listitem>
- * </itemizedlist>
- *
- */
-
-/* TODO:
- *  - In push mode provide a queue of adapter-"queued" buffers for upstream
- *    buffer metadata
- *  - Queue buffers/events until caps are set
- */
-
-#ifdef HAVE_CONFIG_H
-#  include "config.h"
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "gstbaseparse.h"
-
-#define MIN_FRAMES_TO_POST_BITRATE 10
-#define TARGET_DIFFERENCE          (20 * GST_SECOND)
-
-GST_DEBUG_CATEGORY_STATIC (gst_base_parse_debug);
-#define GST_CAT_DEFAULT gst_base_parse_debug
-
-/* Supported formats */
-static GstFormat fmtlist[] = {
-  GST_FORMAT_DEFAULT,
-  GST_FORMAT_BYTES,
-  GST_FORMAT_TIME,
-  0
-};
-
-#define GST_BASE_PARSE_GET_PRIVATE(obj)  \
-    (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_BASE_PARSE, GstBaseParsePrivate))
-
-struct _GstBaseParsePrivate
-{
-  GstActivateMode pad_mode;
-
-  gint64 duration;
-  GstFormat duration_fmt;
-  gint64 estimated_duration;
-
-  guint min_frame_size;
-  guint format;
-  guint fps_num, fps_den;
-  gint update_interval;
-  guint bitrate;
-  guint lead_in, lead_out;
-  GstClockTime lead_in_ts, lead_out_ts;
-  GstBaseParseSeekable seekable;
-
-  gboolean discont;
-  gboolean flushing;
-  gboolean drain;
-
-  gint64 offset;
-  gint64 sync_offset;
-  GstClockTime next_ts;
-  GstClockTime prev_ts;
-  GstClockTime frame_duration;
-  gboolean seen_keyframe;
-  gboolean is_video;
-
-  guint64 framecount;
-  guint64 bytecount;
-  guint64 data_bytecount;
-  guint64 acc_duration;
-  GstClockTime first_frame_ts;
-  gint64 first_frame_offset;
-
-  gboolean post_min_bitrate;
-  gboolean post_avg_bitrate;
-  gboolean post_max_bitrate;
-  guint min_bitrate;
-  guint avg_bitrate;
-  guint max_bitrate;
-  guint posted_avg_bitrate;
-
-  GList *pending_events;
-
-  GstBuffer *cache;
-
-  /* index entry storage, either ours or provided */
-  GstIndex *index;
-  gint index_id;
-  gboolean own_index;
-  /* seek table entries only maintained if upstream is BYTE seekable */
-  gboolean upstream_seekable;
-  gboolean upstream_has_duration;
-  gint64 upstream_size;
-  /* minimum distance between two index entries */
-  GstClockTimeDiff idx_interval;
-  /* ts and offset of last entry added */
-  GstClockTime index_last_ts;
-  gint64 index_last_offset;
-  gboolean index_last_valid;
-
-  /* timestamps currently produced are accurate, e.g. started from 0 onwards */
-  gboolean exact_position;
-  /* seek events are temporarily kept to match them with newsegments */
-  GSList *pending_seeks;
-
-  /* reverse playback */
-  GSList *buffers_pending;
-  GSList *buffers_queued;
-  GSList *buffers_send;
-  GstClockTime last_ts;
-  gint64 last_offset;
-};
-
-typedef struct _GstBaseParseSeek
-{
-  GstSegment segment;
-  gboolean accurate;
-  gint64 offset;
-  GstClockTime start_ts;
-} GstBaseParseSeek;
-
-#define GST_BASE_PARSE_PASSTHROUGH(parse)  \
-    (parse->priv->format & GST_BASE_PARSE_FORMAT_PASSTHROUGH)
-#define GST_BASE_PARSE_HAS_TIME(parse)  \
-    (parse->priv->format & GST_BASE_PARSE_FORMAT_HAS_TIME)
-
-
-static GstElementClass *parent_class = NULL;
-
-static void gst_base_parse_class_init (GstBaseParseClass * klass);
-static void gst_base_parse_init (GstBaseParse * parse,
-    GstBaseParseClass * klass);
-
-GType
-gst_base_parse_get_type (void)
-{
-  static GType base_parse_type = 0;
-
-  if (!base_parse_type) {
-    static const GTypeInfo base_parse_info = {
-      sizeof (GstBaseParseClass),
-      (GBaseInitFunc) NULL,
-      (GBaseFinalizeFunc) NULL,
-      (GClassInitFunc) gst_base_parse_class_init,
-      NULL,
-      NULL,
-      sizeof (GstBaseParse),
-      0,
-      (GInstanceInitFunc) gst_base_parse_init,
-    };
-
-    base_parse_type = g_type_register_static (GST_TYPE_ELEMENT,
-        "GstBaseParseBad", &base_parse_info, G_TYPE_FLAG_ABSTRACT);
-  }
-  return base_parse_type;
-}
-
-static void gst_base_parse_finalize (GObject * object);
-
-static GstStateChangeReturn gst_base_parse_change_state (GstElement * element,
-    GstStateChange transition);
-static void gst_base_parse_reset (GstBaseParse * parse);
-
-static void gst_base_parse_set_index (GstElement * element, GstIndex * index);
-static GstIndex *gst_base_parse_get_index (GstElement * element);
-
-static gboolean gst_base_parse_sink_activate (GstPad * sinkpad);
-static gboolean gst_base_parse_sink_activate_push (GstPad * pad,
-    gboolean active);
-static gboolean gst_base_parse_sink_activate_pull (GstPad * pad,
-    gboolean active);
-static gboolean gst_base_parse_handle_seek (GstBaseParse * parse,
-    GstEvent * event);
-static void gst_base_parse_handle_tag (GstBaseParse * parse, GstEvent * event);
-
-static gboolean gst_base_parse_src_event (GstPad * pad, GstEvent * event);
-static gboolean gst_base_parse_sink_event (GstPad * pad, GstEvent * event);
-static gboolean gst_base_parse_query (GstPad * pad, GstQuery * query);
-static gboolean gst_base_parse_sink_setcaps (GstPad * pad, GstCaps * caps);
-static const GstQueryType *gst_base_parse_get_querytypes (GstPad * pad);
-
-static GstFlowReturn gst_base_parse_chain (GstPad * pad, GstBuffer * buffer);
-static void gst_base_parse_loop (GstPad * pad);
-
-static gboolean gst_base_parse_check_frame (GstBaseParse * parse,
-    GstBaseParseFrame * frame, guint * framesize, gint * skipsize);
-static GstFlowReturn gst_base_parse_parse_frame (GstBaseParse * parse,
-    GstBaseParseFrame * frame);
-
-static gboolean gst_base_parse_sink_eventfunc (GstBaseParse * parse,
-    GstEvent * event);
-
-static gboolean gst_base_parse_src_eventfunc (GstBaseParse * parse,
-    GstEvent * event);
-
-static void gst_base_parse_drain (GstBaseParse * parse);
-
-static void gst_base_parse_post_bitrates (GstBaseParse * parse,
-    gboolean post_min, gboolean post_avg, gboolean post_max);
-
-static gint64 gst_base_parse_find_offset (GstBaseParse * parse,
-    GstClockTime time, gboolean before, GstClockTime * _ts);
-static GstFlowReturn gst_base_parse_locate_time (GstBaseParse * parse,
-    GstClockTime * _time, gint64 * _offset);
-
-static GstFlowReturn gst_base_parse_process_fragment (GstBaseParse * parse,
-    gboolean push_only);
-
-static void
-gst_base_parse_clear_queues (GstBaseParse * parse)
-{
-  g_slist_foreach (parse->priv->buffers_queued, (GFunc) gst_buffer_unref, NULL);
-  g_slist_free (parse->priv->buffers_queued);
-  parse->priv->buffers_queued = NULL;
-  g_slist_foreach (parse->priv->buffers_pending, (GFunc) gst_buffer_unref,
-      NULL);
-  g_slist_free (parse->priv->buffers_pending);
-  parse->priv->buffers_pending = NULL;
-  g_slist_foreach (parse->priv->buffers_send, (GFunc) gst_buffer_unref, NULL);
-  g_slist_free (parse->priv->buffers_send);
-  parse->priv->buffers_send = NULL;
-}
-
-static void
-gst_base_parse_finalize (GObject * object)
-{
-  GstBaseParse *parse = GST_BASE_PARSE (object);
-  GstEvent **p_ev;
-
-  g_object_unref (parse->adapter);
-
-  if (parse->pending_segment) {
-    p_ev = &parse->pending_segment;
-    gst_event_replace (p_ev, NULL);
-  }
-  if (parse->close_segment) {
-    p_ev = &parse->close_segment;
-    gst_event_replace (p_ev, NULL);
-  }
-
-  if (parse->priv->cache) {
-    gst_buffer_unref (parse->priv->cache);
-    parse->priv->cache = NULL;
-  }
-
-  g_list_foreach (parse->priv->pending_events, (GFunc) gst_mini_object_unref,
-      NULL);
-  g_list_free (parse->priv->pending_events);
-  parse->priv->pending_events = NULL;
-
-  if (parse->priv->index) {
-    gst_object_unref (parse->priv->index);
-    parse->priv->index = NULL;
-  }
-
-  gst_base_parse_clear_queues (parse);
-
-  G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_base_parse_class_init (GstBaseParseClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = G_OBJECT_CLASS (klass);
-  g_type_class_add_private (klass, sizeof (GstBaseParsePrivate));
-  parent_class = g_type_class_peek_parent (klass);
-  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_base_parse_finalize);
-
-  gstelement_class = (GstElementClass *) klass;
-  gstelement_class->change_state =
-      GST_DEBUG_FUNCPTR (gst_base_parse_change_state);
-  gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_base_parse_set_index);
-  gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_base_parse_get_index);
-
-  /* Default handlers */
-  klass->check_valid_frame = gst_base_parse_check_frame;
-  klass->parse_frame = gst_base_parse_parse_frame;
-  klass->src_event = gst_base_parse_src_eventfunc;
-  klass->convert = gst_base_parse_convert_default;
-
-  GST_DEBUG_CATEGORY_INIT (gst_base_parse_debug, "baseparse", 0,
-      "baseparse element");
-}
-
-static void
-gst_base_parse_init (GstBaseParse * parse, GstBaseParseClass * bclass)
-{
-  GstPadTemplate *pad_template;
-
-  GST_DEBUG_OBJECT (parse, "gst_base_parse_init");
-
-  parse->priv = GST_BASE_PARSE_GET_PRIVATE (parse);
-
-  pad_template =
-      gst_element_class_get_pad_template (GST_ELEMENT_CLASS (bclass), "sink");
-  g_return_if_fail (pad_template != NULL);
-  parse->sinkpad = gst_pad_new_from_template (pad_template, "sink");
-  gst_pad_set_event_function (parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_sink_event));
-  gst_pad_set_setcaps_function (parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_sink_setcaps));
-  gst_pad_set_chain_function (parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_chain));
-  gst_pad_set_activate_function (parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_sink_activate));
-  gst_pad_set_activatepush_function (parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_sink_activate_push));
-  gst_pad_set_activatepull_function (parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_sink_activate_pull));
-  gst_element_add_pad (GST_ELEMENT (parse), parse->sinkpad);
-
-  GST_DEBUG_OBJECT (parse, "sinkpad created");
-
-  pad_template =
-      gst_element_class_get_pad_template (GST_ELEMENT_CLASS (bclass), "src");
-  g_return_if_fail (pad_template != NULL);
-  parse->srcpad = gst_pad_new_from_template (pad_template, "src");
-  gst_pad_set_event_function (parse->srcpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_src_event));
-  gst_pad_set_query_type_function (parse->srcpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_get_querytypes));
-  gst_pad_set_query_function (parse->srcpad,
-      GST_DEBUG_FUNCPTR (gst_base_parse_query));
-  gst_pad_use_fixed_caps (parse->srcpad);
-  gst_element_add_pad (GST_ELEMENT (parse), parse->srcpad);
-  GST_DEBUG_OBJECT (parse, "src created");
-
-  parse->adapter = gst_adapter_new ();
-
-  parse->priv->pad_mode = GST_ACTIVATE_NONE;
-
-  /* init state */
-  gst_base_parse_reset (parse);
-  GST_DEBUG_OBJECT (parse, "init ok");
-}
-
-/**
- * gst_base_parse_frame_init:
- * @parse: #GstBaseParse.
- * @fmt: #GstBaseParseFrame.
- *
- * Sets a #GstBaseParseFrame to initial state.  Currently this means
- * all fields are zero-ed.
- */
-void
-gst_base_parse_frame_init (GstBaseParse * parse, GstBaseParseFrame * frame)
-{
-  memset (frame, 0, sizeof (*frame));
-}
-
-/* clear == frame no longer to be used following this */
-static void
-gst_base_parse_frame_clear (GstBaseParse * parse, GstBaseParseFrame * frame)
-{
-  /* limited for now */
-  if (frame->buffer) {
-    gst_buffer_unref (frame->buffer);
-    frame->buffer = NULL;
-  }
-}
-
-static inline void
-gst_base_parse_frame_update (GstBaseParse * parse, GstBaseParseFrame * frame,
-    GstBuffer * buf)
-{
-  gst_buffer_replace (&frame->buffer, buf);
-  if (parse->priv->drain) {
-    frame->flags |= GST_BASE_PARSE_FRAME_FLAG_DRAIN;
-  } else {
-    frame->flags &= ~(GST_BASE_PARSE_FRAME_FLAG_DRAIN);
-  }
-  /* losing sync is pretty much a discont (and vice versa), no ? */
-  if (!parse->priv->discont) {
-    frame->flags |= GST_BASE_PARSE_FRAME_FLAG_SYNC;
-  } else {
-    frame->flags &= ~(GST_BASE_PARSE_FRAME_FLAG_SYNC);
-  }
-}
-
-static void
-gst_base_parse_reset (GstBaseParse * parse)
-{
-  GST_OBJECT_LOCK (parse);
-  gst_segment_init (&parse->segment, GST_FORMAT_TIME);
-  parse->priv->duration = -1;
-  parse->priv->min_frame_size = 1;
-  parse->priv->discont = TRUE;
-  parse->priv->flushing = FALSE;
-  parse->priv->offset = 0;
-  parse->priv->sync_offset = 0;
-  parse->priv->update_interval = -1;
-  parse->priv->fps_num = parse->priv->fps_den = 0;
-  parse->priv->frame_duration = GST_CLOCK_TIME_NONE;
-  parse->priv->lead_in = parse->priv->lead_out = 0;
-  parse->priv->lead_in_ts = parse->priv->lead_out_ts = 0;
-  parse->priv->seekable = GST_BASE_PARSE_SEEK_DEFAULT;
-  parse->priv->bitrate = 0;
-  parse->priv->framecount = 0;
-  parse->priv->bytecount = 0;
-  parse->priv->acc_duration = 0;
-  parse->priv->first_frame_ts = GST_CLOCK_TIME_NONE;
-  parse->priv->first_frame_offset = -1;
-  parse->priv->estimated_duration = -1;
-  parse->priv->next_ts = 0;
-  parse->priv->format = 0;
-  parse->priv->post_min_bitrate = TRUE;
-  parse->priv->post_avg_bitrate = TRUE;
-  parse->priv->post_max_bitrate = TRUE;
-  parse->priv->min_bitrate = G_MAXUINT;
-  parse->priv->max_bitrate = 0;
-  parse->priv->avg_bitrate = 0;
-  parse->priv->posted_avg_bitrate = 0;
-
-  parse->priv->index_last_ts = GST_CLOCK_TIME_NONE;
-  parse->priv->index_last_offset = -1;
-  parse->priv->index_last_valid = TRUE;
-  parse->priv->upstream_seekable = FALSE;
-  parse->priv->upstream_size = 0;
-  parse->priv->upstream_has_duration = FALSE;
-  parse->priv->idx_interval = 0;
-  parse->priv->exact_position = TRUE;
-  parse->priv->seen_keyframe = FALSE;
-
-  parse->priv->last_ts = GST_CLOCK_TIME_NONE;
-  parse->priv->last_offset = 0;
-
-  if (parse->pending_segment) {
-    gst_event_unref (parse->pending_segment);
-    parse->pending_segment = NULL;
-  }
-
-  g_list_foreach (parse->priv->pending_events, (GFunc) gst_mini_object_unref,
-      NULL);
-  g_list_free (parse->priv->pending_events);
-  parse->priv->pending_events = NULL;
-
-  if (parse->priv->cache) {
-    gst_buffer_unref (parse->priv->cache);
-    parse->priv->cache = NULL;
-  }
-
-  g_slist_foreach (parse->priv->pending_seeks, (GFunc) g_free, NULL);
-  g_slist_free (parse->priv->pending_seeks);
-  parse->priv->pending_seeks = NULL;
-
-  GST_OBJECT_UNLOCK (parse);
-}
-
-/**
- * gst_base_parse_check_frame:
- * @parse: #GstBaseParse.
- * @buffer: GstBuffer.
- * @framesize: This will be set to tell the found frame size in bytes.
- * @skipsize: Output parameter that tells how much data needs to be skipped
- *            in order to find the following frame header.
- *
- * Default callback for check_valid_frame.
- *
- * Returns: Always TRUE.
- */
-static gboolean
-gst_base_parse_check_frame (GstBaseParse * parse,
-    GstBaseParseFrame * frame, guint * framesize, gint * skipsize)
-{
-  *framesize = GST_BUFFER_SIZE (frame->buffer);
-  *skipsize = 0;
-  return TRUE;
-}
-
-
-/**
- * gst_base_parse_parse_frame:
- * @parse: #GstBaseParse.
- * @buffer: #GstBuffer.
- *
- * Default callback for parse_frame.
- */
-static GstFlowReturn
-gst_base_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
-{
-  GstBuffer *buffer = frame->buffer;
-
-  if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer) &&
-      GST_CLOCK_TIME_IS_VALID (parse->priv->next_ts)) {
-    GST_BUFFER_TIMESTAMP (buffer) = parse->priv->next_ts;
-  }
-  if (!GST_BUFFER_DURATION_IS_VALID (buffer) &&
-      GST_CLOCK_TIME_IS_VALID (parse->priv->frame_duration)) {
-    GST_BUFFER_DURATION (buffer) = parse->priv->frame_duration;
-  }
-  return GST_FLOW_OK;
-}
-
-/**
- * gst_base_parse_convert:
- * @parse: #GstBaseParse.
- * @src_format: #GstFormat describing the source format.
- * @src_value: Source value to be converted.
- * @dest_format: #GstFormat defining the converted format.
- * @dest_value: Pointer where the conversion result will be put.
- *
- * Converts using configured "convert" vmethod in #GstBaseParse class.
- *
- * Returns: TRUE if conversion was successful.
- */
-static gboolean
-gst_base_parse_convert (GstBaseParse * parse,
-    GstFormat src_format,
-    gint64 src_value, GstFormat dest_format, gint64 * dest_value)
-{
-  GstBaseParseClass *klass = GST_BASE_PARSE_GET_CLASS (parse);
-  gboolean ret;
-
-  g_return_val_if_fail (dest_value != NULL, FALSE);
-
-  if (!klass->convert)
-    return FALSE;
-
-  ret = klass->convert (parse, src_format, src_value, dest_format, dest_value);
-
-#ifndef GST_DISABLE_GST_DEBUG
-  {
-    if (ret) {
-      if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_BYTES) {
-        GST_LOG_OBJECT (parse,
-            "TIME -> BYTES: %" GST_TIME_FORMAT " -> %" G_GINT64_FORMAT,
-            GST_TIME_ARGS (src_value), *dest_value);
-      } else if (dest_format == GST_FORMAT_TIME &&
-          src_format == GST_FORMAT_BYTES) {
-        GST_LOG_OBJECT (parse,
-            "BYTES -> TIME: %" G_GINT64_FORMAT " -> %" GST_TIME_FORMAT,
-            src_value, GST_TIME_ARGS (*dest_value));
-      } else {
-        GST_LOG_OBJECT (parse,
-            "%s -> %s: %" G_GINT64_FORMAT " -> %" G_GINT64_FORMAT,
-            GST_STR_NULL (gst_format_get_name (src_format)),
-            GST_STR_NULL (gst_format_get_name (dest_format)),
-            src_value, *dest_value);
-      }
-    } else {
-      GST_DEBUG_OBJECT (parse, "conversion failed");
-    }
-  }
-#endif
-
-  return ret;
-}
-
-/**
- * gst_base_parse_sink_event:
- * @pad: #GstPad that received the event.
- * @event: #GstEvent to be handled.
- *
- * Handler for sink pad events.
- *
- * Returns: TRUE if the event was handled.
- */
-static gboolean
-gst_base_parse_sink_event (GstPad * pad, GstEvent * event)
-{
-  GstBaseParse *parse;
-  GstBaseParseClass *bclass;
-  gboolean handled = FALSE;
-  gboolean ret = TRUE;
-
-  parse = GST_BASE_PARSE (gst_pad_get_parent (pad));
-  bclass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  GST_DEBUG_OBJECT (parse, "handling event %d, %s", GST_EVENT_TYPE (event),
-      GST_EVENT_TYPE_NAME (event));
-
-  /* Cache all events except EOS, NEWSEGMENT and FLUSH_STOP if we have a
-   * pending segment */
-  if (parse->pending_segment && GST_EVENT_TYPE (event) != GST_EVENT_EOS
-      && GST_EVENT_TYPE (event) != GST_EVENT_NEWSEGMENT
-      && GST_EVENT_TYPE (event) != GST_EVENT_FLUSH_START
-      && GST_EVENT_TYPE (event) != GST_EVENT_FLUSH_STOP) {
-
-    if (GST_EVENT_TYPE (event) == GST_EVENT_TAG)
-      /* See if any bitrate tags were posted */
-      gst_base_parse_handle_tag (parse, event);
-
-    parse->priv->pending_events =
-        g_list_append (parse->priv->pending_events, event);
-    ret = TRUE;
-  } else {
-
-    if (GST_EVENT_TYPE (event) == GST_EVENT_EOS &&
-        parse->priv->framecount < MIN_FRAMES_TO_POST_BITRATE)
-      /* We've not posted bitrate tags yet - do so now */
-      gst_base_parse_post_bitrates (parse, TRUE, TRUE, TRUE);
-
-    if (bclass->event)
-      handled = bclass->event (parse, event);
-
-    if (!handled)
-      handled = gst_base_parse_sink_eventfunc (parse, event);
-
-    if (!handled)
-      ret = gst_pad_event_default (pad, event);
-  }
-
-  gst_object_unref (parse);
-  GST_DEBUG_OBJECT (parse, "event handled");
-  return ret;
-}
-
-
-/**
- * gst_base_parse_sink_eventfunc:
- * @parse: #GstBaseParse.
- * @event: #GstEvent to be handled.
- *
- * Element-level event handler function.
- *
- * The event will be unreffed only if it has been handled and this
- * function returns %TRUE
- *
- * Returns: %TRUE if the event was handled and not need forwarding.
- */
-static gboolean
-gst_base_parse_sink_eventfunc (GstBaseParse * parse, GstEvent * event)
-{
-  gboolean handled = FALSE;
-  GstEvent **eventp;
-
-  switch (GST_EVENT_TYPE (event)) {
-    case GST_EVENT_NEWSEGMENT:
-    {
-      gdouble rate, applied_rate;
-      GstFormat format;
-      gint64 start, stop, pos, next_ts, offset = 0;
-      gboolean update;
-
-      gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
-          &format, &start, &stop, &pos);
-
-      GST_DEBUG_OBJECT (parse, "newseg rate %g, applied rate %g, "
-          "format %d, start = %" GST_TIME_FORMAT ", stop = %" GST_TIME_FORMAT
-          ", pos = %" GST_TIME_FORMAT, rate, applied_rate, format,
-          GST_TIME_ARGS (start), GST_TIME_ARGS (stop), GST_TIME_ARGS (pos));
-
-      if (format == GST_FORMAT_BYTES) {
-        GstClockTime seg_start, seg_stop;
-        GstBaseParseSeek *seek = NULL;
-        GSList *node;
-
-        /* stop time is allowed to be open-ended, but not start & pos */
-        seg_stop = GST_CLOCK_TIME_NONE;
-        seg_start = 0;
-        offset = pos;
-
-        GST_OBJECT_LOCK (parse);
-        for (node = parse->priv->pending_seeks; node; node = node->next) {
-          GstBaseParseSeek *tmp = node->data;
-
-          if (tmp->offset == pos) {
-            seek = tmp;
-            break;
-          }
-        }
-        parse->priv->pending_seeks =
-            g_slist_remove (parse->priv->pending_seeks, seek);
-        GST_OBJECT_UNLOCK (parse);
-
-        if (seek) {
-          GST_DEBUG_OBJECT (parse,
-              "Matched newsegment to%s seek: %" GST_SEGMENT_FORMAT,
-              seek->accurate ? " accurate" : "", &seek->segment);
-          seg_start = seek->segment.start;
-          seg_stop = seek->segment.stop;
-          next_ts = seek->start_ts;
-          parse->priv->exact_position = seek->accurate;
-          g_free (seek);
-        } else {
-          /* best attempt convert */
-          /* as these are only estimates, stop is kept open-ended to avoid
-           * premature cutting */
-          gst_base_parse_convert (parse, GST_FORMAT_BYTES, start,
-              GST_FORMAT_TIME, (gint64 *) & seg_start);
-          parse->priv->exact_position = (start == 0);
-          next_ts = seg_start;
-        }
-
-        gst_event_unref (event);
-        event = gst_event_new_new_segment_full (update, rate, applied_rate,
-            GST_FORMAT_TIME, seg_start, seg_stop, seg_start);
-        format = GST_FORMAT_TIME;
-        start = seg_start;
-        stop = seg_stop;
-        GST_DEBUG_OBJECT (parse, "Converted incoming segment to TIME. "
-            "start = %" GST_TIME_FORMAT ", stop = %" GST_TIME_FORMAT,
-            GST_TIME_ARGS (seg_start), GST_TIME_ARGS (seg_stop));
-      } else if (format != GST_FORMAT_TIME) {
-        /* Unknown incoming segment format. Output a default open-ended
-         * TIME segment */
-        gst_event_unref (event);
-        event = gst_event_new_new_segment_full (update, rate, applied_rate,
-            GST_FORMAT_TIME, 0, GST_CLOCK_TIME_NONE, 0);
-        format = GST_FORMAT_TIME;
-        next_ts = start = 0;
-        stop = GST_CLOCK_TIME_NONE;
-      } else {
-        /* not considered BYTE seekable if it is talking to us in TIME,
-         * whatever else it might claim */
-        parse->priv->upstream_seekable = FALSE;
-        next_ts = start;
-      }
-
-      gst_segment_set_newsegment_full (&parse->segment, update, rate,
-          applied_rate, format, start, stop, start);
-
-      /* save the segment for later, right before we push a new buffer so that
-       * the caps are fixed and the next linked element can receive
-       * the segment. */
-      eventp = &parse->pending_segment;
-      gst_event_replace (eventp, event);
-      gst_event_unref (event);
-      handled = TRUE;
-
-      /* but finish the current segment */
-      GST_DEBUG_OBJECT (parse, "draining current segment");
-      if (parse->segment.rate > 0.0)
-        gst_base_parse_drain (parse);
-      else
-        gst_base_parse_process_fragment (parse, FALSE);
-      gst_adapter_clear (parse->adapter);
-      parse->priv->offset = offset;
-      parse->priv->sync_offset = offset;
-      parse->priv->next_ts = next_ts;
-      parse->priv->last_ts = GST_CLOCK_TIME_NONE;
-      parse->priv->discont = TRUE;
-      parse->priv->seen_keyframe = FALSE;
-      break;
-    }
-
-    case GST_EVENT_FLUSH_START:
-      parse->priv->flushing = TRUE;
-      handled = gst_pad_push_event (parse->srcpad, gst_event_ref (event));
-      if (handled)
-        gst_event_unref (event);
-      /* Wait for _chain() to exit by taking the srcpad STREAM_LOCK */
-      GST_PAD_STREAM_LOCK (parse->srcpad);
-      GST_PAD_STREAM_UNLOCK (parse->srcpad);
-
-      break;
-
-    case GST_EVENT_FLUSH_STOP:
-      gst_adapter_clear (parse->adapter);
-      gst_base_parse_clear_queues (parse);
-      parse->priv->flushing = FALSE;
-      parse->priv->discont = TRUE;
-      parse->priv->last_ts = GST_CLOCK_TIME_NONE;
-      break;
-
-    case GST_EVENT_EOS:
-      if (parse->segment.rate > 0.0)
-        gst_base_parse_drain (parse);
-      else
-        gst_base_parse_process_fragment (parse, FALSE);
-
-      /* If we STILL have zero frames processed, fire an error */
-      if (parse->priv->framecount == 0) {
-        GST_ELEMENT_ERROR (parse, STREAM, WRONG_TYPE,
-            ("No valid frames found before end of stream"), (NULL));
-      }
-      /* newsegment before eos */
-      if (parse->pending_segment) {
-        gst_pad_push_event (parse->srcpad, parse->pending_segment);
-        parse->pending_segment = NULL;
-      }
-      break;
-
-    default:
-      break;
-  }
-
-  return handled;
-}
-
-
-/**
- * gst_base_parse_src_event:
- * @pad: #GstPad that received the event.
- * @event: #GstEvent that was received.
- *
- * Handler for source pad events.
- *
- * Returns: TRUE if the event was handled.
- */
-static gboolean
-gst_base_parse_src_event (GstPad * pad, GstEvent * event)
-{
-  GstBaseParse *parse;
-  GstBaseParseClass *bclass;
-  gboolean handled = FALSE;
-  gboolean ret = TRUE;
-
-  parse = GST_BASE_PARSE (gst_pad_get_parent (pad));
-  bclass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  GST_DEBUG_OBJECT (parse, "event %d, %s", GST_EVENT_TYPE (event),
-      GST_EVENT_TYPE_NAME (event));
-
-  if (bclass->src_event)
-    handled = bclass->src_event (parse, event);
-
-  if (!handled)
-    ret = gst_pad_event_default (pad, event);
-
-  gst_object_unref (parse);
-  return ret;
-}
-
-
-/**
- * gst_base_parse_src_eventfunc:
- * @parse: #GstBaseParse.
- * @event: #GstEvent that was received.
- *
- * Default srcpad event handler.
- *
- * Returns: TRUE if the event was handled and can be dropped.
- */
-static gboolean
-gst_base_parse_src_eventfunc (GstBaseParse * parse, GstEvent * event)
-{
-  gboolean handled = FALSE;
-
-  switch (GST_EVENT_TYPE (event)) {
-    case GST_EVENT_SEEK:
-    {
-      if (parse->priv->seekable > GST_BASE_PARSE_SEEK_NONE) {
-        handled = gst_base_parse_handle_seek (parse, event);
-      }
-      break;
-    }
-    default:
-      break;
-  }
-  return handled;
-}
-
-
-/**
- * gst_base_parse_convert_default:
- * @parse: #GstBaseParse.
- * @src_format: #GstFormat describing the source format.
- * @src_value: Source value to be converted.
- * @dest_format: #GstFormat defining the converted format.
- * @dest_value: Pointer where the conversion result will be put.
- *
- * Default implementation of "convert" vmethod in #GstBaseParse class.
- *
- * Returns: TRUE if conversion was successful.
- */
-gboolean
-gst_base_parse_convert_default (GstBaseParse * parse,
-    GstFormat src_format,
-    gint64 src_value, GstFormat dest_format, gint64 * dest_value)
-{
-  gboolean ret = FALSE;
-  guint64 bytes, duration;
-
-  if (G_UNLIKELY (src_format == dest_format)) {
-    *dest_value = src_value;
-    return TRUE;
-  }
-
-  if (G_UNLIKELY (src_value == -1)) {
-    *dest_value = -1;
-    return TRUE;
-  }
-
-  if (G_UNLIKELY (src_value == 0)) {
-    *dest_value = 0;
-    return TRUE;
-  }
-
-  /* need at least some frames */
-  if (!parse->priv->framecount)
-    return FALSE;
-
-  duration = parse->priv->acc_duration / GST_MSECOND;
-  bytes = parse->priv->bytecount;
-
-  if (G_UNLIKELY (!duration || !bytes))
-    return FALSE;
-
-  if (src_format == GST_FORMAT_BYTES) {
-    if (dest_format == GST_FORMAT_TIME) {
-      /* BYTES -> TIME conversion */
-      GST_DEBUG_OBJECT (parse, "converting bytes -> time");
-      *dest_value = gst_util_uint64_scale (src_value, duration, bytes);
-      *dest_value *= GST_MSECOND;
-      GST_DEBUG_OBJECT (parse, "conversion result: %" G_GINT64_FORMAT " ms",
-          *dest_value / GST_MSECOND);
-      ret = TRUE;
-    }
-  } else if (src_format == GST_FORMAT_TIME) {
-    if (dest_format == GST_FORMAT_BYTES) {
-      GST_DEBUG_OBJECT (parse, "converting time -> bytes");
-      *dest_value = gst_util_uint64_scale (src_value / GST_MSECOND, bytes,
-          duration);
-      GST_DEBUG_OBJECT (parse,
-          "time %" G_GINT64_FORMAT " ms in bytes = %" G_GINT64_FORMAT,
-          src_value / GST_MSECOND, *dest_value);
-      ret = TRUE;
-    }
-  } else if (src_format == GST_FORMAT_DEFAULT) {
-    /* DEFAULT == frame-based */
-    if (dest_format == GST_FORMAT_TIME) {
-      if (parse->priv->fps_den) {
-        *dest_value = gst_util_uint64_scale (src_value,
-            GST_SECOND * parse->priv->fps_den, parse->priv->fps_num);
-        ret = TRUE;
-      }
-    } else if (dest_format == GST_FORMAT_BYTES) {
-    }
-  }
-
-  return ret;
-}
-
-/**
- * gst_base_parse_update_duration:
- * @parse: #GstBaseParse.
- *
- */
-static void
-gst_base_parse_update_duration (GstBaseParse * aacparse)
-{
-  GstPad *peer;
-  GstBaseParse *parse;
-
-  parse = GST_BASE_PARSE (aacparse);
-
-  peer = gst_pad_get_peer (parse->sinkpad);
-  if (peer) {
-    GstFormat pformat = GST_FORMAT_BYTES;
-    gboolean qres = FALSE;
-    gint64 ptot, dest_value;
-
-    qres = gst_pad_query_duration (peer, &pformat, &ptot);
-    gst_object_unref (GST_OBJECT (peer));
-    if (qres) {
-      if (gst_base_parse_convert (parse, pformat, ptot,
-              GST_FORMAT_TIME, &dest_value)) {
-        parse->priv->estimated_duration = dest_value;
-        GST_LOG_OBJECT (parse,
-            "updated estimated duration to %" GST_TIME_FORMAT,
-            GST_TIME_ARGS (dest_value));
-      }
-    }
-  }
-}
-
-static void
-gst_base_parse_post_bitrates (GstBaseParse * parse, gboolean post_min,
-    gboolean post_avg, gboolean post_max)
-{
-  GstTagList *taglist = gst_tag_list_new ();
-
-  if (post_min && parse->priv->post_min_bitrate)
-    gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
-        GST_TAG_MINIMUM_BITRATE, parse->priv->min_bitrate, NULL);
-
-  if (post_avg && parse->priv->post_avg_bitrate) {
-    parse->priv->posted_avg_bitrate = parse->priv->avg_bitrate;
-    gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE, GST_TAG_BITRATE,
-        parse->priv->avg_bitrate, NULL);
-  }
-
-  if (post_max && parse->priv->post_max_bitrate)
-    gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
-        GST_TAG_MAXIMUM_BITRATE, parse->priv->max_bitrate, NULL);
-
-  GST_DEBUG_OBJECT (parse, "Updated bitrates. Min: %u, Avg: %u, Max: %u",
-      parse->priv->min_bitrate, parse->priv->avg_bitrate,
-      parse->priv->max_bitrate);
-
-  gst_element_found_tags_for_pad (GST_ELEMENT (parse), parse->srcpad, taglist);
-}
-
-/**
- * gst_base_parse_update_bitrates:
- * @parse: #GstBaseParse.
- * @buffer: Current frame as a #GstBuffer
- *
- * Keeps track of the minimum and maximum bitrates, and also maintains a
- * running average bitrate of the stream so far.
- */
-static void
-gst_base_parse_update_bitrates (GstBaseParse * parse, GstBaseParseFrame * frame)
-{
-  /* Only update the tag on a 10 kbps delta */
-  static const gint update_threshold = 10000;
-
-  GstBaseParseClass *klass;
-  guint64 data_len, frame_dur;
-  gint overhead, frame_bitrate, old_avg_bitrate;
-  gboolean update_min = FALSE, update_avg = FALSE, update_max = FALSE;
-  GstBuffer *buffer = frame->buffer;
-
-  klass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  overhead = frame->overhead;
-  if (overhead == -1)
-    return;
-
-  data_len = GST_BUFFER_SIZE (buffer) - overhead;
-  parse->priv->data_bytecount += data_len;
-
-  /* duration should be valid by now,
-   * either set by subclass or maybe based on fps settings */
-  if (GST_BUFFER_DURATION_IS_VALID (buffer) && parse->priv->acc_duration != 0) {
-    /* Calculate duration of a frame from buffer properties */
-    frame_dur = GST_BUFFER_DURATION (buffer);
-    parse->priv->avg_bitrate = (8 * parse->priv->data_bytecount * GST_SECOND) /
-        parse->priv->acc_duration;
-
-  } else {
-    /* No way to figure out frame duration (is this even possible?) */
-    return;
-  }
-
-  /* override if subclass provided bitrate, e.g. metadata based */
-  if (parse->priv->bitrate) {
-    parse->priv->avg_bitrate = parse->priv->bitrate;
-    /* spread this (confirmed) info ASAP */
-    if (parse->priv->posted_avg_bitrate != parse->priv->avg_bitrate)
-      gst_base_parse_post_bitrates (parse, FALSE, TRUE, FALSE);
-  }
-
-  if (frame_dur)
-    frame_bitrate = (8 * data_len * GST_SECOND) / frame_dur;
-  else
-    return;
-
-  GST_LOG_OBJECT (parse, "frame bitrate %u, avg bitrate %u", frame_bitrate,
-      parse->priv->avg_bitrate);
-
-  if (parse->priv->framecount < MIN_FRAMES_TO_POST_BITRATE) {
-    goto exit;
-  } else if (parse->priv->framecount == MIN_FRAMES_TO_POST_BITRATE) {
-    /* always post all at threshold time */
-    update_min = update_max = update_avg = TRUE;
-  }
-
-  if (G_LIKELY (parse->priv->framecount >= MIN_FRAMES_TO_POST_BITRATE)) {
-    if (frame_bitrate < parse->priv->min_bitrate) {
-      parse->priv->min_bitrate = frame_bitrate;
-      update_min = TRUE;
-    }
-
-    if (frame_bitrate > parse->priv->max_bitrate) {
-      parse->priv->max_bitrate = frame_bitrate;
-      update_max = TRUE;
-    }
-
-    old_avg_bitrate = parse->priv->posted_avg_bitrate;
-    if ((gint) (old_avg_bitrate - parse->priv->avg_bitrate) > update_threshold
-        || (gint) (parse->priv->avg_bitrate - old_avg_bitrate) >
-        update_threshold)
-      update_avg = TRUE;
-  }
-
-  if ((update_min || update_avg || update_max))
-    gst_base_parse_post_bitrates (parse, update_min, update_avg, update_max);
-
-  /* If average bitrate changes that much and no valid (time) duration provided,
-   * then post a new duration message so applications can update their cached
-   * values */
-  if (update_avg && !(parse->priv->duration_fmt == GST_FORMAT_TIME &&
-          GST_CLOCK_TIME_IS_VALID (parse->priv->duration)))
-    gst_element_post_message (GST_ELEMENT (parse),
-        gst_message_new_duration (GST_OBJECT (parse), GST_FORMAT_TIME, -1));
-
-exit:
-  return;
-}
-
-/**
- * gst_base_parse_add_index_entry:
- * @parse: #GstBaseParse.
- * @offset: offset of entry
- * @ts: timestamp associated with offset
- * @key: whether entry refers to keyframe
- * @force: add entry disregarding sanity checks
- *
- * Adds an entry to the index associating @offset to @ts.  It is recommended
- * to only add keyframe entries.  @force allows to bypass checks, such as
- * whether the stream is (upstream) seekable, another entry is already "close"
- * to the new entry, etc.
- *
- * Returns: #gboolean indicating whether entry was added
- */
-gboolean
-gst_base_parse_add_index_entry (GstBaseParse * parse, guint64 offset,
-    GstClockTime ts, gboolean key, gboolean force)
-{
-  gboolean ret = FALSE;
-  GstIndexAssociation associations[2];
-
-  GST_LOG_OBJECT (parse, "Adding key=%d index entry %" GST_TIME_FORMAT
-      " @ offset 0x%08" G_GINT64_MODIFIER "x", key, GST_TIME_ARGS (ts), offset);
-
-  if (G_LIKELY (!force)) {
-
-    if (!parse->priv->upstream_seekable) {
-      GST_DEBUG_OBJECT (parse, "upstream not seekable; discarding");
-      goto exit;
-    }
-
-    /* FIXME need better helper data structure that handles these issues
-     * related to ongoing collecting of index entries */
-    if (parse->priv->index_last_offset >= (gint64) offset) {
-      GST_DEBUG_OBJECT (parse, "already have entries up to offset "
-          "0x%08" G_GINT64_MODIFIER "x", parse->priv->index_last_offset);
-      goto exit;
-    }
-
-    if (GST_CLOCK_TIME_IS_VALID (parse->priv->index_last_ts) &&
-        GST_CLOCK_DIFF (parse->priv->index_last_ts, ts) <
-        parse->priv->idx_interval) {
-      GST_DEBUG_OBJECT (parse, "entry too close to last time %" GST_TIME_FORMAT,
-          GST_TIME_ARGS (parse->priv->index_last_ts));
-      goto exit;
-    }
-
-    /* if last is not really the last one */
-    if (!parse->priv->index_last_valid) {
-      GstClockTime prev_ts;
-
-      gst_base_parse_find_offset (parse, ts, TRUE, &prev_ts);
-      if (GST_CLOCK_DIFF (prev_ts, ts) < parse->priv->idx_interval) {
-        GST_DEBUG_OBJECT (parse,
-            "entry too close to existing entry %" GST_TIME_FORMAT,
-            GST_TIME_ARGS (prev_ts));
-        parse->priv->index_last_offset = offset;
-        parse->priv->index_last_ts = ts;
-        goto exit;
-      }
-    }
-  }
-
-  associations[0].format = GST_FORMAT_TIME;
-  associations[0].value = ts;
-  associations[1].format = GST_FORMAT_BYTES;
-  associations[1].value = offset;
-
-  /* index might change on-the-fly, although that would be nutty app ... */
-  GST_OBJECT_LOCK (parse);
-  gst_index_add_associationv (parse->priv->index, parse->priv->index_id,
-      (key) ? GST_ASSOCIATION_FLAG_KEY_UNIT : GST_ASSOCIATION_FLAG_DELTA_UNIT,
-      2, (const GstIndexAssociation *) &associations);
-  GST_OBJECT_UNLOCK (parse);
-
-  if (key) {
-    parse->priv->index_last_offset = offset;
-    parse->priv->index_last_ts = ts;
-  }
-
-  ret = TRUE;
-
-exit:
-  return ret;
-}
-
-/* check for seekable upstream, above and beyond a mere query */
-static void
-gst_base_parse_check_seekability (GstBaseParse * parse)
-{
-  GstQuery *query;
-  gboolean seekable = FALSE;
-  gint64 start = -1, stop = -1;
-  guint idx_interval = 0;
-
-  query = gst_query_new_seeking (GST_FORMAT_BYTES);
-  if (!gst_pad_peer_query (parse->sinkpad, query)) {
-    GST_DEBUG_OBJECT (parse, "seeking query failed");
-    goto done;
-  }
-
-  gst_query_parse_seeking (query, NULL, &seekable, &start, &stop);
-
-  /* try harder to query upstream size if we didn't get it the first time */
-  if (seekable && stop == -1) {
-    GstFormat fmt = GST_FORMAT_BYTES;
-
-    GST_DEBUG_OBJECT (parse, "doing duration query to fix up unset stop");
-    gst_pad_query_peer_duration (parse->sinkpad, &fmt, &stop);
-  }
-
-  /* if upstream doesn't know the size, it's likely that it's not seekable in
-   * practice even if it technically may be seekable */
-  if (seekable && (start != 0 || stop <= start)) {
-    GST_DEBUG_OBJECT (parse, "seekable but unknown start/stop -> disable");
-    seekable = FALSE;
-  }
-
-  /* let's not put every single frame into our index */
-  if (seekable) {
-    if (stop < 10 * 1024 * 1024)
-      idx_interval = 100;
-    else if (stop < 100 * 1024 * 1024)
-      idx_interval = 500;
-    else
-      idx_interval = 1000;
-  }
-
-done:
-  gst_query_unref (query);
-
-  GST_DEBUG_OBJECT (parse, "seekable: %d (%" G_GUINT64_FORMAT " - %"
-      G_GUINT64_FORMAT ")", seekable, start, stop);
-  parse->priv->upstream_seekable = seekable;
-  parse->priv->upstream_size = seekable ? stop : 0;
-
-  GST_DEBUG_OBJECT (parse, "idx_interval: %ums", idx_interval);
-  parse->priv->idx_interval = idx_interval * GST_MSECOND;
-}
-
-/* some misc checks on upstream */
-static void
-gst_base_parse_check_upstream (GstBaseParse * parse)
-{
-  GstFormat fmt = GST_FORMAT_TIME;
-  gint64 stop;
-
-  if (gst_pad_query_peer_duration (parse->sinkpad, &fmt, &stop))
-    if (GST_CLOCK_TIME_IS_VALID (stop) && stop) {
-      /* upstream has one, accept it also, and no further updates */
-      gst_base_parse_set_duration (parse, GST_FORMAT_TIME, stop, 0);
-      parse->priv->upstream_has_duration = TRUE;
-    }
-
-  GST_DEBUG_OBJECT (parse, "upstream_has_duration: %d",
-      parse->priv->upstream_has_duration);
-}
-
-/* checks src caps to determine if dealing with audio or video */
-/* TODO maybe forego automagic stuff and let subclass configure it ? */
-static void
-gst_base_parse_check_media (GstBaseParse * parse)
-{
-  GstCaps *caps;
-  GstStructure *s;
-
-  caps = GST_PAD_CAPS (parse->srcpad);
-  if (G_LIKELY (caps) && (s = gst_caps_get_structure (caps, 0))) {
-    parse->priv->is_video =
-        g_str_has_prefix (gst_structure_get_name (s), "video");
-  } else {
-    /* historical default */
-    parse->priv->is_video = FALSE;
-  }
-
-  GST_DEBUG_OBJECT (parse, "media is video == %d", parse->priv->is_video);
-}
-
-/**
- * gst_base_parse_handle_and_push_buffer:
- * @parse: #GstBaseParse.
- * @klass: #GstBaseParseClass.
- * @buffer: #GstBuffer.
- *
- * Parses the frame from given buffer and pushes it forward. Also performs
- * timestamp handling and checks the segment limits.
- *
- * This is called with srcpad STREAM_LOCK held.
- *
- * Returns: #GstFlowReturn
- */
-static GstFlowReturn
-gst_base_parse_handle_and_push_frame (GstBaseParse * parse,
-    GstBaseParseClass * klass, GstBaseParseFrame * frame)
-{
-  GstFlowReturn ret;
-  gint64 offset;
-  GstBuffer *buffer;
-
-  g_return_val_if_fail (frame != NULL, GST_FLOW_ERROR);
-
-  buffer = frame->buffer;
-
-  if (parse->priv->discont) {
-    GST_DEBUG_OBJECT (parse, "marking DISCONT");
-    GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
-    parse->priv->discont = FALSE;
-  }
-
-  /* some one-time start-up */
-  if (G_UNLIKELY (!parse->priv->framecount)) {
-    gst_base_parse_check_seekability (parse);
-    gst_base_parse_check_upstream (parse);
-  }
-
-  GST_LOG_OBJECT (parse,
-      "parsing frame at offset %" G_GUINT64_FORMAT
-      " (%#" G_GINT64_MODIFIER "x) of size %d",
-      GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET (buffer),
-      GST_BUFFER_SIZE (buffer));
-
-  /* use default handler to provide initial (upstream) metadata */
-  gst_base_parse_parse_frame (parse, frame);
-
-  /* store offset as it might get overwritten */
-  offset = GST_BUFFER_OFFSET (buffer);
-  ret = klass->parse_frame (parse, frame);
-  /* sync */
-  buffer = frame->buffer;
-  /* subclass must play nice */
-  g_return_val_if_fail (buffer != NULL, GST_FLOW_ERROR);
-
-  /* check if subclass/format can provide ts.
-   * If so, that allows and enables extra seek and duration determining options */
-  if (G_UNLIKELY (parse->priv->first_frame_offset < 0 && ret == GST_FLOW_OK)) {
-    if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer) &&
-        GST_BASE_PARSE_HAS_TIME (parse) &&
-        parse->priv->pad_mode == GST_ACTIVATE_PULL) {
-      parse->priv->first_frame_offset = offset;
-      parse->priv->first_frame_ts = GST_BUFFER_TIMESTAMP (buffer);
-      GST_DEBUG_OBJECT (parse, "subclass provided ts %" GST_TIME_FORMAT
-          " for first frame at offset %" G_GINT64_FORMAT,
-          GST_TIME_ARGS (parse->priv->first_frame_ts),
-          parse->priv->first_frame_offset);
-      if (!GST_CLOCK_TIME_IS_VALID (parse->priv->duration)) {
-        gint64 off;
-        GstClockTime last_ts = G_MAXINT64;
-
-        GST_DEBUG_OBJECT (parse, "no duration; trying scan to determine");
-        gst_base_parse_locate_time (parse, &last_ts, &off);
-        if (GST_CLOCK_TIME_IS_VALID (last_ts))
-          gst_base_parse_set_duration (parse, GST_FORMAT_TIME, last_ts, 0);
-      }
-    } else {
-      /* disable further checks */
-      parse->priv->first_frame_offset = 0;
-    }
-  }
-
-  /* again use default handler to add missing metadata;
-   * we may have new information on frame properties */
-  gst_base_parse_parse_frame (parse, frame);
-  if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer) &&
-      GST_BUFFER_DURATION_IS_VALID (buffer)) {
-    parse->priv->next_ts =
-        GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer);
-  } else {
-    /* we lost track, do not produce bogus time next time around
-     * (probably means parser subclass has given up on parsing as well) */
-    GST_DEBUG_OBJECT (parse, "no next fallback timestamp");
-    parse->priv->next_ts = GST_CLOCK_TIME_NONE;
-  }
-
-  if (parse->priv->upstream_seekable && parse->priv->exact_position &&
-      GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
-    gst_base_parse_add_index_entry (parse, offset,
-        GST_BUFFER_TIMESTAMP (buffer),
-        !GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT), FALSE);
-
-  /* First buffers are dropped, this means that the subclass needs more
-   * frames to decide on the format and queues them internally */
-  /* convert internal flow to OK and mark discont for the next buffer. */
-  if (ret == GST_BASE_PARSE_FLOW_DROPPED) {
-    gst_base_parse_frame_clear (parse, frame);
-    return GST_FLOW_OK;
-  } else if (ret != GST_FLOW_OK) {
-    return ret;
-  }
-
-  return gst_base_parse_push_frame (parse, frame);
-}
-
-/**
- * gst_base_parse_push_frame:
- * @parse: #GstBaseParse.
- * @frame: #GstBaseParseFrame.
- *
- * Pushes the frame downstream, sends any pending events and
- * does some timestamp and segment handling.
- *
- * This must be called with sinkpad STREAM_LOCK held.
- *
- * Returns: #GstFlowReturn
- */
-GstFlowReturn
-gst_base_parse_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
-{
-  GstFlowReturn ret = GST_FLOW_OK;
-  GstClockTime last_start = GST_CLOCK_TIME_NONE;
-  GstClockTime last_stop = GST_CLOCK_TIME_NONE;
-  GstBaseParseClass *klass = GST_BASE_PARSE_GET_CLASS (parse);
-  GstBuffer *buffer;
-
-  g_return_val_if_fail (frame != NULL, GST_FLOW_ERROR);
-  g_return_val_if_fail (frame->buffer != NULL, GST_FLOW_ERROR);
-
-  buffer = frame->buffer;
-
-  GST_LOG_OBJECT (parse,
-      "processing buffer of size %d with ts %" GST_TIME_FORMAT
-      ", duration %" GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer),
-      GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
-      GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
-
-  /* update stats */
-  parse->priv->bytecount += GST_BUFFER_SIZE (buffer);
-  if (G_LIKELY (!(frame->flags & GST_BASE_PARSE_FRAME_FLAG_NO_FRAME))) {
-    parse->priv->framecount++;
-    if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
-      parse->priv->acc_duration += GST_BUFFER_DURATION (buffer);
-    }
-  }
-  /* 0 means disabled */
-  if (parse->priv->update_interval < 0)
-    parse->priv->update_interval = 50;
-  else if (parse->priv->update_interval > 0 &&
-      (parse->priv->framecount % parse->priv->update_interval) == 0)
-    gst_base_parse_update_duration (parse);
-
-  if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
-    last_start = last_stop = GST_BUFFER_TIMESTAMP (buffer);
-  if (last_start != GST_CLOCK_TIME_NONE
-      && GST_BUFFER_DURATION_IS_VALID (buffer))
-    last_stop = last_start + GST_BUFFER_DURATION (buffer);
-
-  /* should have caps by now */
-  g_return_val_if_fail (GST_PAD_CAPS (parse->srcpad), GST_FLOW_ERROR);
-
-  /* segment adjustment magic; only if we are running the whole show */
-  if (!GST_BASE_PARSE_PASSTHROUGH (parse) && parse->segment.rate > 0.0 &&
-      (parse->priv->pad_mode == GST_ACTIVATE_PULL ||
-          parse->priv->upstream_seekable)) {
-    /* segment times are typically estimates,
-     * actual frame data might lead subclass to different timestamps,
-     * so override segment start from what is supplied there */
-    if (G_UNLIKELY (parse->pending_segment && !parse->priv->exact_position &&
-            GST_CLOCK_TIME_IS_VALID (last_start))) {
-      gst_event_unref (parse->pending_segment);
-      parse->segment.start =
-          MIN ((guint64) last_start, (guint64) parse->segment.stop);
-      GST_DEBUG_OBJECT (parse,
-          "adjusting pending segment start to %" GST_TIME_FORMAT,
-          GST_TIME_ARGS (parse->segment.start));
-      parse->pending_segment =
-          gst_event_new_new_segment (FALSE, parse->segment.rate,
-          parse->segment.format, parse->segment.start, parse->segment.stop,
-          parse->segment.start);
-    }
-    /* handle gaps, e.g. non-zero start-time, in as much not handled by above */
-    if (GST_CLOCK_TIME_IS_VALID (parse->segment.last_stop) &&
-        GST_CLOCK_TIME_IS_VALID (last_start)) {
-      GstClockTimeDiff diff;
-
-      /* only send newsegments with increasing start times,
-       * otherwise if these go back and forth downstream (sinks) increase
-       * accumulated time and running_time */
-      diff = GST_CLOCK_DIFF (parse->segment.last_stop, last_start);
-      if (G_UNLIKELY (diff > 2 * GST_SECOND && last_start > parse->segment.start
-              && (!GST_CLOCK_TIME_IS_VALID (parse->segment.stop) ||
-                  last_start < parse->segment.stop))) {
-        GST_DEBUG_OBJECT (parse,
-            "Gap of %" G_GINT64_FORMAT " ns detected in stream "
-            "(%" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT "). "
-            "Sending updated NEWSEGMENT events", diff,
-            GST_TIME_ARGS (parse->segment.last_stop),
-            GST_TIME_ARGS (last_start));
-        if (G_UNLIKELY (parse->pending_segment)) {
-          gst_event_unref (parse->pending_segment);
-          parse->segment.start = last_start;
-          parse->pending_segment =
-              gst_event_new_new_segment (FALSE, parse->segment.rate,
-              parse->segment.format, parse->segment.start, parse->segment.stop,
-              parse->segment.start);
-        } else {
-          /* send newsegment events such that the gap is not accounted in
-           * accum time, hence running_time */
-          /* close ahead of gap */
-          gst_pad_push_event (parse->srcpad,
-              gst_event_new_new_segment (TRUE, parse->segment.rate,
-                  parse->segment.format, parse->segment.last_stop,
-                  parse->segment.last_stop, parse->segment.last_stop));
-          /* skip gap */
-          gst_pad_push_event (parse->srcpad,
-              gst_event_new_new_segment (FALSE, parse->segment.rate,
-                  parse->segment.format, last_start, parse->segment.stop,
-                  last_start));
-        }
-        /* align segment view with downstream,
-         * prevents double-counting accum when closing segment */
-        gst_segment_set_newsegment (&parse->segment, FALSE,
-            parse->segment.rate, parse->segment.format, last_start,
-            parse->segment.stop, last_start);
-        parse->segment.last_stop = last_start;
-      }
-    }
-  }
-
-  /* and should then also be linked downstream, so safe to send some events */
-  if (G_UNLIKELY (parse->close_segment)) {
-    /* only set up by loop */
-    GST_DEBUG_OBJECT (parse, "loop sending close segment");
-    gst_pad_push_event (parse->srcpad, parse->close_segment);
-    parse->close_segment = NULL;
-  }
-  if (G_UNLIKELY (parse->pending_segment)) {
-    GST_DEBUG_OBJECT (parse, "%s push pending segment",
-        parse->priv->pad_mode == GST_ACTIVATE_PULL ? "loop" : "chain");
-    gst_pad_push_event (parse->srcpad, parse->pending_segment);
-    parse->pending_segment = NULL;
-
-    /* have caps; check identity */
-    gst_base_parse_check_media (parse);
-  }
-
-  /* update bitrates and optionally post corresponding tags
-   * (following newsegment) */
-  gst_base_parse_update_bitrates (parse, frame);
-
-  if (G_UNLIKELY (parse->priv->pending_events)) {
-    GList *l;
-
-    for (l = parse->priv->pending_events; l != NULL; l = l->next) {
-      gst_pad_push_event (parse->srcpad, GST_EVENT (l->data));
-    }
-    g_list_free (parse->priv->pending_events);
-    parse->priv->pending_events = NULL;
-  }
-
-  if (klass->pre_push_frame) {
-    ret = klass->pre_push_frame (parse, frame);
-  } else {
-    frame->flags |= GST_BASE_PARSE_FRAME_FLAG_CLIP;
-  }
-
-  /* take final ownership of frame buffer */
-  buffer = frame->buffer;
-  frame->buffer = NULL;
-
-  /* subclass must play nice */
-  g_return_val_if_fail (buffer != NULL, GST_FLOW_ERROR);
-
-  /* decorate */
-  buffer = gst_buffer_make_metadata_writable (buffer);
-  gst_buffer_set_caps (buffer, GST_PAD_CAPS (parse->srcpad));
-
-  parse->priv->seen_keyframe |= parse->priv->is_video &&
-      !GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
-
-  if (frame->flags & GST_BASE_PARSE_FRAME_FLAG_CLIP) {
-    if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer) &&
-        GST_CLOCK_TIME_IS_VALID (parse->segment.stop) &&
-        GST_BUFFER_TIMESTAMP (buffer) >
-        parse->segment.stop + parse->priv->lead_out_ts) {
-      GST_LOG_OBJECT (parse, "Dropped frame, after segment");
-      ret = GST_FLOW_UNEXPECTED;
-    } else if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer) &&
-        GST_BUFFER_DURATION_IS_VALID (buffer) &&
-        GST_CLOCK_TIME_IS_VALID (parse->segment.start) &&
-        GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer) +
-        parse->priv->lead_in_ts < parse->segment.start) {
-      if (parse->priv->seen_keyframe) {
-        GST_LOG_OBJECT (parse, "Frame before segment, after keyframe");
-        ret = GST_FLOW_OK;
-      } else {
-        GST_LOG_OBJECT (parse, "Dropped frame, before segment");
-        ret = GST_BASE_PARSE_FLOW_DROPPED;
-      }
-    } else {
-      ret = GST_FLOW_OK;
-    }
-  }
-
-  if (ret == GST_BASE_PARSE_FLOW_DROPPED) {
-    GST_LOG_OBJECT (parse, "frame (%d bytes) dropped",
-        GST_BUFFER_SIZE (buffer));
-    gst_buffer_unref (buffer);
-    ret = GST_FLOW_OK;
-  } else if (ret == GST_FLOW_OK) {
-    if (parse->segment.rate > 0.0) {
-      ret = gst_pad_push (parse->srcpad, buffer);
-      GST_LOG_OBJECT (parse, "frame (%d bytes) pushed: %s",
-          GST_BUFFER_SIZE (buffer), gst_flow_get_name (ret));
-    } else {
-      GST_LOG_OBJECT (parse, "frame (%d bytes) queued for now",
-          GST_BUFFER_SIZE (buffer));
-      parse->priv->buffers_queued =
-          g_slist_prepend (parse->priv->buffers_queued, buffer);
-      ret = GST_FLOW_OK;
-    }
-  } else {
-    gst_buffer_unref (buffer);
-    GST_LOG_OBJECT (parse, "frame (%d bytes) not pushed: %s",
-        GST_BUFFER_SIZE (buffer), gst_flow_get_name (ret));
-    /* if we are not sufficiently in control, let upstream decide on EOS */
-    if (ret == GST_FLOW_UNEXPECTED &&
-        (GST_BASE_PARSE_PASSTHROUGH (parse) ||
-            (parse->priv->pad_mode == GST_ACTIVATE_PUSH &&
-                !parse->priv->upstream_seekable)))
-      ret = GST_FLOW_OK;
-  }
-
-  /* Update current running segment position */
-  if (ret == GST_FLOW_OK && last_stop != GST_CLOCK_TIME_NONE &&
-      parse->segment.last_stop < last_stop)
-    gst_segment_set_last_stop (&parse->segment, GST_FORMAT_TIME, last_stop);
-
-  gst_base_parse_frame_clear (parse, frame);
-
-  return ret;
-}
-
-
-/**
- * gst_base_parse_drain:
- * @parse: #GstBaseParse.
- *
- * Drains the adapter until it is empty. It decreases the min_frame_size to
- * match the current adapter size and calls chain method until the adapter
- * is emptied or chain returns with error.
- */
-static void
-gst_base_parse_drain (GstBaseParse * parse)
-{
-  guint avail;
-
-  GST_DEBUG_OBJECT (parse, "draining");
-  parse->priv->drain = TRUE;
-
-  for (;;) {
-    avail = gst_adapter_available (parse->adapter);
-    if (!avail)
-      break;
-
-    if (gst_base_parse_chain (parse->sinkpad, NULL) != GST_FLOW_OK) {
-      break;
-    }
-
-    /* nothing changed, maybe due to truncated frame; break infinite loop */
-    if (avail == gst_adapter_available (parse->adapter)) {
-      GST_DEBUG_OBJECT (parse, "no change during draining; flushing");
-      gst_adapter_clear (parse->adapter);
-    }
-  }
-
-  parse->priv->drain = FALSE;
-}
-
-/**
- * gst_base_parse_process_fragment:
- * @parse: #GstBaseParse.
- *
- * Sends buffers collected in send_buffers downstream, and ensures that list
- * is empty at the end (errors or not).
- */
-static GstFlowReturn
-gst_base_parse_send_buffers (GstBaseParse * parse)
-{
-  GSList *send = NULL;
-  GstBuffer *buf;
-  GstFlowReturn ret = GST_FLOW_OK;
-
-  send = parse->priv->buffers_send;
-
-  /* send buffers */
-  while (send) {
-    buf = GST_BUFFER_CAST (send->data);
-    GST_LOG_OBJECT (parse, "pushing buffer %p, timestamp %"
-        GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT
-        ", offset %" G_GINT64_FORMAT, buf,
-        GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
-        GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_OFFSET (buf));
-
-    /* iterate output queue an push downstream */
-    ret = gst_pad_push (parse->srcpad, buf);
-    send = g_slist_delete_link (send, send);
-
-    /* clear any leftover if error */
-    if (G_UNLIKELY (ret != GST_FLOW_OK)) {
-      while (send) {
-        buf = GST_BUFFER_CAST (send->data);
-        gst_buffer_unref (buf);
-        send = g_slist_delete_link (send, send);
-      }
-    }
-  }
-
-  parse->priv->buffers_send = send;
-
-  return ret;
-}
-
-/**
- * gst_base_parse_process_fragment:
- * @parse: #GstBaseParse.
- *
- * Processes a reverse playback (forward) fragment:
- * - append head of last fragment that was skipped to current fragment data
- * - drain the resulting current fragment data (i.e. repeated chain)
- * - add time/duration (if needed) to frames queued by chain
- * - push queued data
- */
-static GstFlowReturn
-gst_base_parse_process_fragment (GstBaseParse * parse, gboolean push_only)
-{
-  GstBuffer *buf;
-  GstFlowReturn ret = GST_FLOW_OK;
-  gboolean seen_key = FALSE, seen_delta = FALSE;
-
-  if (push_only)
-    goto push;
-
-  /* restore order */
-  parse->priv->buffers_pending = g_slist_reverse (parse->priv->buffers_pending);
-  while (parse->priv->buffers_pending) {
-    buf = GST_BUFFER_CAST (parse->priv->buffers_pending->data);
-    GST_LOG_OBJECT (parse, "adding pending buffer (size %d)",
-        GST_BUFFER_SIZE (buf));
-    gst_adapter_push (parse->adapter, buf);
-    parse->priv->buffers_pending =
-        g_slist_delete_link (parse->priv->buffers_pending,
-        parse->priv->buffers_pending);
-  }
-
-  /* invalidate so no fall-back timestamping is performed;
-   * ok if taken from subclass or upstream */
-  parse->priv->next_ts = GST_CLOCK_TIME_NONE;
-  /* prevent it hanging around stop all the time */
-  parse->segment.last_stop = GST_CLOCK_TIME_NONE;
-  /* mark next run */
-  parse->priv->discont = TRUE;
-
-  /* chain looks for frames and queues resulting ones (in stead of pushing) */
-  /* initial skipped data is added to buffers_pending */
-  gst_base_parse_drain (parse);
-
-push:
-  if (parse->priv->buffers_send) {
-    buf = GST_BUFFER_CAST (parse->priv->buffers_send->data);
-    seen_key |= !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
-  }
-
-  /* add metadata (if needed to queued buffers */
-  GST_LOG_OBJECT (parse, "last timestamp: %" GST_TIME_FORMAT,
-      GST_TIME_ARGS (parse->priv->last_ts));
-  while (parse->priv->buffers_queued) {
-    buf = GST_BUFFER_CAST (parse->priv->buffers_queued->data);
-
-    /* no touching if upstream or parsing provided time */
-    if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
-      GST_LOG_OBJECT (parse, "buffer has time %" GST_TIME_FORMAT,
-          GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
-    } else if (GST_CLOCK_TIME_IS_VALID (parse->priv->last_ts) &&
-        GST_BUFFER_DURATION_IS_VALID (buf)) {
-      if (G_LIKELY (GST_BUFFER_DURATION (buf) <= parse->priv->last_ts))
-        parse->priv->last_ts -= GST_BUFFER_DURATION (buf);
-      else
-        parse->priv->last_ts = 0;
-      GST_BUFFER_TIMESTAMP (buf) = parse->priv->last_ts;
-      GST_LOG_OBJECT (parse, "applied time %" GST_TIME_FORMAT,
-          GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
-    } else {
-      /* no idea, very bad */
-      GST_WARNING_OBJECT (parse, "could not determine time for buffer");
-    }
-
-    parse->priv->last_ts = GST_BUFFER_TIMESTAMP (buf);
-
-    /* reverse order for ascending sending */
-    /* send downstream at keyframe not preceded by a keyframe
-     * (e.g. that should identify start of collection of IDR nals) */
-    if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT)) {
-      if (seen_key) {
-        ret = gst_base_parse_send_buffers (parse);
-        /* if a problem, throw all to sending */
-        if (ret != GST_FLOW_OK) {
-          parse->priv->buffers_send =
-              g_slist_reverse (parse->priv->buffers_queued);
-          parse->priv->buffers_queued = NULL;
-          break;
-        }
-        seen_key = FALSE;
-      }
-    } else {
-      seen_delta = TRUE;
-    }
-
-    seen_key |= !GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
-
-    parse->priv->buffers_send =
-        g_slist_prepend (parse->priv->buffers_send, buf);
-    parse->priv->buffers_queued =
-        g_slist_delete_link (parse->priv->buffers_queued,
-        parse->priv->buffers_queued);
-  }
-
-  /* audio may have all marked as keyframe, so arrange to send here */
-  if (!seen_delta)
-    ret = gst_base_parse_send_buffers (parse);
-
-  /* any trailing unused no longer usable (ideally none) */
-  if (G_UNLIKELY (gst_adapter_available (parse->adapter))) {
-    GST_DEBUG_OBJECT (parse, "discarding %d trailing bytes",
-        gst_adapter_available (parse->adapter));
-    gst_adapter_clear (parse->adapter);
-  }
-
-  return ret;
-}
-
-/* small helper that checks whether we have been trying to resync too long */
-static inline GstFlowReturn
-gst_base_parse_check_sync (GstBaseParse * parse)
-{
-  if (G_UNLIKELY (parse->priv->discont &&
-          parse->priv->offset - parse->priv->sync_offset > 2 * 1024 * 1024)) {
-    GST_ELEMENT_ERROR (parse, STREAM, DECODE,
-        ("Failed to parse stream"), (NULL));
-    return GST_FLOW_ERROR;
-  }
-
-  return GST_FLOW_OK;
-}
-
-
-/**
- * gst_base_parse_chain:
- * @pad: #GstPad.
- * @buffer: #GstBuffer.
- *
- * Returns: #GstFlowReturn.
- */
-static GstFlowReturn
-gst_base_parse_chain (GstPad * pad, GstBuffer * buffer)
-{
-  GstBaseParseClass *bclass;
-  GstBaseParse *parse;
-  GstFlowReturn ret = GST_FLOW_OK;
-  GstBuffer *outbuf = NULL;
-  GstBuffer *tmpbuf = NULL;
-  guint fsize = 1;
-  gint skip = -1;
-  const guint8 *data;
-  guint old_min_size = 0, min_size, av;
-  GstClockTime timestamp;
-  GstBaseParseFrame _frame = { 0, };
-  GstBaseParseFrame *frame;
-
-  parse = GST_BASE_PARSE (GST_OBJECT_PARENT (pad));
-  bclass = GST_BASE_PARSE_GET_CLASS (parse);
-  frame = &_frame;
-
-  if (G_LIKELY (buffer)) {
-    GST_LOG_OBJECT (parse, "buffer size: %d, offset = %" G_GINT64_FORMAT,
-        GST_BUFFER_SIZE (buffer), GST_BUFFER_OFFSET (buffer));
-    if (G_UNLIKELY (GST_BASE_PARSE_PASSTHROUGH (parse))) {
-      frame->buffer = gst_buffer_make_metadata_writable (buffer);
-      return gst_base_parse_push_frame (parse, frame);
-    }
-    /* upstream feeding us in reverse playback;
-     * gather each fragment, then process it in single run */
-    if (parse->segment.rate < 0.0) {
-      if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))) {
-        GST_DEBUG_OBJECT (parse, "buffer starts new reverse playback fragment");
-        ret = gst_base_parse_process_fragment (parse, FALSE);
-      }
-      gst_adapter_push (parse->adapter, buffer);
-      return ret;
-    }
-    gst_adapter_push (parse->adapter, buffer);
-  }
-
-  /* Parse and push as many frames as possible */
-  /* Stop either when adapter is empty or we are flushing */
-  while (!parse->priv->flushing) {
-    gboolean res;
-
-    tmpbuf = gst_buffer_new ();
-
-    old_min_size = 0;
-    /* Synchronization loop */
-    for (;;) {
-      min_size = MAX (parse->priv->min_frame_size, fsize);
-      av = gst_adapter_available (parse->adapter);
-
-      /* loop safety check */
-      if (G_UNLIKELY (old_min_size >= min_size))
-        goto invalid_min;
-      old_min_size = min_size;
-
-      if (G_UNLIKELY (parse->priv->drain)) {
-        min_size = av;
-        GST_DEBUG_OBJECT (parse, "draining, data left: %d", min_size);
-        if (G_UNLIKELY (!min_size)) {
-          gst_buffer_unref (tmpbuf);
-          goto done;
-        }
-      }
-
-      /* Collect at least min_frame_size bytes */
-      if (av < min_size) {
-        GST_DEBUG_OBJECT (parse, "not enough data available (only %d bytes)",
-            av);
-        gst_buffer_unref (tmpbuf);
-        goto done;
-      }
-
-      /* always pass all available data */
-      data = gst_adapter_peek (parse->adapter, av);
-      GST_BUFFER_DATA (tmpbuf) = (guint8 *) data;
-      GST_BUFFER_SIZE (tmpbuf) = min_size;
-      GST_BUFFER_OFFSET (tmpbuf) = parse->priv->offset;
-      GST_BUFFER_FLAG_SET (tmpbuf, GST_MINI_OBJECT_FLAG_READONLY);
-
-      if (parse->priv->discont) {
-        GST_DEBUG_OBJECT (parse, "marking DISCONT");
-        GST_BUFFER_FLAG_SET (tmpbuf, GST_BUFFER_FLAG_DISCONT);
-      }
-
-      skip = -1;
-      gst_base_parse_frame_update (parse, frame, tmpbuf);
-      res = bclass->check_valid_frame (parse, frame, &fsize, &skip);
-      gst_buffer_replace (&frame->buffer, NULL);
-      if (res) {
-        if (gst_adapter_available (parse->adapter) < fsize) {
-          GST_DEBUG_OBJECT (parse,
-              "found valid frame but not enough data available (only %d bytes)",
-              gst_adapter_available (parse->adapter));
-          gst_buffer_unref (tmpbuf);
-          goto done;
-        }
-        GST_LOG_OBJECT (parse, "valid frame of size %d at pos %d", fsize, skip);
-        break;
-      }
-      if (skip == -1) {
-        /* subclass didn't touch this value. By default we skip 1 byte */
-        skip = 1;
-      }
-      if (skip > 0) {
-        GST_LOG_OBJECT (parse, "finding sync, skipping %d bytes", skip);
-        if (parse->segment.rate < 0.0 && !parse->priv->buffers_queued) {
-          /* reverse playback, and no frames found yet, so we are skipping
-           * the leading part of a fragment, which may form the tail of
-           * fragment coming later, hopefully subclass skips efficiently ... */
-          timestamp = gst_adapter_prev_timestamp (parse->adapter, NULL);
-          outbuf = gst_adapter_take_buffer (parse->adapter, skip);
-          outbuf = gst_buffer_make_metadata_writable (outbuf);
-          GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
-          parse->priv->buffers_pending =
-              g_slist_prepend (parse->priv->buffers_pending, outbuf);
-          outbuf = NULL;
-        } else {
-          gst_adapter_flush (parse->adapter, skip);
-        }
-        parse->priv->offset += skip;
-        if (!parse->priv->discont)
-          parse->priv->sync_offset = parse->priv->offset;
-        parse->priv->discont = TRUE;
-        /* something changed least; nullify loop check */
-        old_min_size = 0;
-      }
-      /* skip == 0 should imply subclass set min_size to need more data;
-       * we check this shortly */
-      if ((ret = gst_base_parse_check_sync (parse)) != GST_FLOW_OK) {
-        gst_buffer_unref (tmpbuf);
-        goto done;
-      }
-    }
-    gst_buffer_unref (tmpbuf);
-    tmpbuf = NULL;
-
-    if (skip > 0) {
-      /* Subclass found the sync, but still wants to skip some data */
-      GST_LOG_OBJECT (parse, "skipping %d bytes", skip);
-      gst_adapter_flush (parse->adapter, skip);
-      parse->priv->offset += skip;
-    }
-
-    /* Grab lock to prevent a race with FLUSH_START handler */
-    GST_PAD_STREAM_LOCK (parse->srcpad);
-
-    /* FLUSH_START event causes the "flushing" flag to be set. In this
-     * case we can leave the frame pushing loop */
-    if (parse->priv->flushing) {
-      GST_PAD_STREAM_UNLOCK (parse->srcpad);
-      break;
-    }
-
-    /* move along with upstream timestamp (if any),
-     * but interpolate in between */
-    timestamp = gst_adapter_prev_timestamp (parse->adapter, NULL);
-    if (GST_CLOCK_TIME_IS_VALID (timestamp) &&
-        (parse->priv->prev_ts != timestamp)) {
-      parse->priv->prev_ts = parse->priv->next_ts = timestamp;
-    }
-
-    /* FIXME: Would it be more efficient to make a subbuffer instead? */
-    outbuf = gst_adapter_take_buffer (parse->adapter, fsize);
-    outbuf = gst_buffer_make_metadata_writable (outbuf);
-
-    /* Subclass may want to know the data offset */
-    GST_BUFFER_OFFSET (outbuf) = parse->priv->offset;
-    parse->priv->offset += fsize;
-    GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
-    GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
-
-    frame->buffer = outbuf;
-    ret = gst_base_parse_handle_and_push_frame (parse, bclass, frame);
-    GST_PAD_STREAM_UNLOCK (parse->srcpad);
-
-    if (ret != GST_FLOW_OK) {
-      GST_LOG_OBJECT (parse, "push returned %d", ret);
-      break;
-    }
-  }
-
-done:
-  GST_LOG_OBJECT (parse, "chain leaving");
-  return ret;
-
-  /* ERRORS */
-invalid_min:
-  {
-    GST_ELEMENT_ERROR (parse, STREAM, FAILED, (NULL),
-        ("min_size evolution %d -> %d; breaking to avoid looping",
-            old_min_size, min_size));
-    return GST_FLOW_ERROR;
-  }
-}
-
-/* pull @size bytes at current offset,
- * i.e. at least try to and possibly return a shorter buffer if near the end */
-static GstFlowReturn
-gst_base_parse_pull_range (GstBaseParse * parse, guint size,
-    GstBuffer ** buffer)
-{
-  GstFlowReturn ret = GST_FLOW_OK;
-
-  g_return_val_if_fail (buffer != NULL, GST_FLOW_ERROR);
-
-  /* Caching here actually makes much less difference than one would expect.
-   * We do it mainly to avoid pulling buffers of 1 byte all the time */
-  if (parse->priv->cache) {
-    gint64 cache_offset = GST_BUFFER_OFFSET (parse->priv->cache);
-    gint cache_size = GST_BUFFER_SIZE (parse->priv->cache);
-
-    if (cache_offset <= parse->priv->offset &&
-        (parse->priv->offset + size) <= (cache_offset + cache_size)) {
-      *buffer = gst_buffer_create_sub (parse->priv->cache,
-          parse->priv->offset - cache_offset, size);
-      GST_BUFFER_OFFSET (*buffer) = parse->priv->offset;
-      return GST_FLOW_OK;
-    }
-    /* not enough data in the cache, free cache and get a new one */
-    gst_buffer_unref (parse->priv->cache);
-    parse->priv->cache = NULL;
-  }
-
-  /* refill the cache */
-  ret =
-      gst_pad_pull_range (parse->sinkpad, parse->priv->offset, MAX (size,
-          64 * 1024), &parse->priv->cache);
-  if (ret != GST_FLOW_OK) {
-    parse->priv->cache = NULL;
-    return ret;
-  }
-
-  if (GST_BUFFER_SIZE (parse->priv->cache) >= size) {
-    *buffer = gst_buffer_create_sub (parse->priv->cache, 0, size);
-    GST_BUFFER_OFFSET (*buffer) = parse->priv->offset;
-    return GST_FLOW_OK;
-  }
-
-  /* Not possible to get enough data, try a last time with
-   * requesting exactly the size we need */
-  gst_buffer_unref (parse->priv->cache);
-  parse->priv->cache = NULL;
-
-  ret = gst_pad_pull_range (parse->sinkpad, parse->priv->offset, size,
-      &parse->priv->cache);
-
-  if (ret != GST_FLOW_OK) {
-    GST_DEBUG_OBJECT (parse, "pull_range returned %d", ret);
-    *buffer = NULL;
-    return ret;
-  }
-
-  if (GST_BUFFER_SIZE (parse->priv->cache) < size) {
-    GST_DEBUG_OBJECT (parse, "Returning short buffer at offset %"
-        G_GUINT64_FORMAT ": wanted %u bytes, got %u bytes", parse->priv->offset,
-        size, GST_BUFFER_SIZE (parse->priv->cache));
-
-    *buffer = parse->priv->cache;
-    parse->priv->cache = NULL;
-
-    return GST_FLOW_OK;
-  }
-
-  *buffer = gst_buffer_create_sub (parse->priv->cache, 0, size);
-  GST_BUFFER_OFFSET (*buffer) = parse->priv->offset;
-
-  return GST_FLOW_OK;
-}
-
-static GstFlowReturn
-gst_base_parse_handle_previous_fragment (GstBaseParse * parse)
-{
-  gint64 offset = 0;
-  GstClockTime ts = 0;
-  GstBuffer *buffer;
-  GstFlowReturn ret;
-
-  GST_DEBUG_OBJECT (parse, "fragment ended; last_ts = %" GST_TIME_FORMAT
-      ", last_offset = %" G_GINT64_FORMAT, GST_TIME_ARGS (parse->priv->last_ts),
-      parse->priv->last_offset);
-
-  if (!parse->priv->last_offset || parse->priv->last_ts <= parse->segment.start) {
-    GST_DEBUG_OBJECT (parse, "past start of segment %" GST_TIME_FORMAT,
-        GST_TIME_ARGS (parse->segment.start));
-    ret = GST_FLOW_UNEXPECTED;
-    goto exit;
-  }
-
-  /* last fragment started at last_offset / last_ts;
-   * seek back 10s capped at 1MB */
-  if (parse->priv->last_ts >= 10 * GST_SECOND)
-    ts = parse->priv->last_ts - 10 * GST_SECOND;
-  /* if we are exact now, we will be more so going backwards */
-  if (parse->priv->exact_position) {
-    offset = gst_base_parse_find_offset (parse, ts, TRUE, NULL);
-  } else {
-    GstFormat dstformat = GST_FORMAT_BYTES;
-
-    if (!gst_pad_query_convert (parse->srcpad, GST_FORMAT_TIME, ts,
-            &dstformat, &offset)) {
-      GST_DEBUG_OBJECT (parse, "conversion failed, only BYTE based");
-    }
-  }
-  offset = CLAMP (offset, parse->priv->last_offset - 1024 * 1024,
-      parse->priv->last_offset - 1024);
-  offset = MAX (0, offset);
-
-  GST_DEBUG_OBJECT (parse, "next fragment from offset %" G_GINT64_FORMAT,
-      offset);
-  parse->priv->offset = offset;
-
-  ret = gst_base_parse_pull_range (parse, parse->priv->last_offset - offset,
-      &buffer);
-  if (ret != GST_FLOW_OK)
-    goto exit;
-
-  /* offset will increase again as fragment is processed/parsed */
-  parse->priv->last_offset = offset;
-
-  gst_adapter_push (parse->adapter, buffer);
-  ret = gst_base_parse_process_fragment (parse, FALSE);
-  if (ret != GST_FLOW_OK)
-    goto exit;
-
-  /* force previous fragment */
-  parse->priv->offset = -1;
-
-exit:
-  return ret;
-}
-
-/* PULL mode:
- * pull and scan for next frame starting from current offset
- * ajusts sync, drain and offset going along */
-static GstFlowReturn
-gst_base_parse_scan_frame (GstBaseParse * parse, GstBaseParseClass * klass,
-    GstBaseParseFrame * frame, gboolean full)
-{
-  GstBuffer *buffer, *outbuf;
-  GstFlowReturn ret = GST_FLOW_OK;
-  guint fsize = 1, min_size, old_min_size = 0;
-  gint skip = 0;
-
-  g_return_val_if_fail (frame != NULL, GST_FLOW_ERROR);
-
-  GST_LOG_OBJECT (parse, "scanning for frame at offset %" G_GUINT64_FORMAT
-      " (%#" G_GINT64_MODIFIER "x)", parse->priv->offset, parse->priv->offset);
-
-  while (TRUE) {
-    gboolean res;
-
-    min_size = MAX (parse->priv->min_frame_size, fsize);
-    /* loop safety check */
-    if (G_UNLIKELY (old_min_size >= min_size))
-      goto invalid_min;
-    old_min_size = min_size;
-
-    ret = gst_base_parse_pull_range (parse, min_size, &buffer);
-    if (ret != GST_FLOW_OK)
-      goto done;
-
-    if (parse->priv->discont) {
-      GST_DEBUG_OBJECT (parse, "marking DISCONT");
-      GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
-    }
-
-    /* if we got a short read, inform subclass we are draining leftover
-     * and no more is to be expected */
-    if (GST_BUFFER_SIZE (buffer) < min_size)
-      parse->priv->drain = TRUE;
-
-    skip = -1;
-    gst_base_parse_frame_update (parse, frame, buffer);
-    res = klass->check_valid_frame (parse, frame, &fsize, &skip);
-    gst_buffer_replace (&frame->buffer, NULL);
-    if (res) {
-      parse->priv->drain = FALSE;
-      GST_LOG_OBJECT (parse, "valid frame of size %d at pos %d", fsize, skip);
-      break;
-    }
-    parse->priv->drain = FALSE;
-    if (skip == -1)
-      skip = 1;
-    if (skip > 0) {
-      GST_LOG_OBJECT (parse, "finding sync, skipping %d bytes", skip);
-      if (full && parse->segment.rate < 0.0 && !parse->priv->buffers_queued) {
-        /* reverse playback, and no frames found yet, so we are skipping
-         * the leading part of a fragment, which may form the tail of
-         * fragment coming later, hopefully subclass skips efficiently ... */
-        outbuf = gst_buffer_create_sub (buffer, 0, skip);
-        parse->priv->buffers_pending =
-            g_slist_prepend (parse->priv->buffers_pending, outbuf);
-        outbuf = NULL;
-      }
-      parse->priv->offset += skip;
-      if (!parse->priv->discont)
-        parse->priv->sync_offset = parse->priv->offset;
-      parse->priv->discont = TRUE;
-      /* something changed least; nullify loop check */
-      old_min_size = 0;
-    }
-    /* skip == 0 should imply subclass set min_size to need more data;
-     * we check this shortly */
-    GST_DEBUG_OBJECT (parse, "finding sync...");
-    gst_buffer_unref (buffer);
-    if ((ret = gst_base_parse_check_sync (parse)) != GST_FLOW_OK) {
-      goto done;
-    }
-  }
-
-  /* Does the subclass want to skip too? */
-  if (skip > 0)
-    parse->priv->offset += skip;
-  else if (skip < 0)
-    skip = 0;
-
-  if (fsize + skip <= GST_BUFFER_SIZE (buffer)) {
-    outbuf = gst_buffer_create_sub (buffer, skip, fsize);
-    GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buffer) + skip;
-    GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
-    gst_buffer_unref (buffer);
-  } else {
-    gst_buffer_unref (buffer);
-    ret = gst_base_parse_pull_range (parse, fsize, &outbuf);
-    if (ret != GST_FLOW_OK)
-      goto done;
-    if (GST_BUFFER_SIZE (outbuf) < fsize) {
-      gst_buffer_unref (outbuf);
-      ret = GST_FLOW_UNEXPECTED;
-    }
-  }
-
-  parse->priv->offset += fsize;
-
-  frame->buffer = outbuf;
-
-done:
-  return ret;
-
-  /* ERRORS */
-invalid_min:
-  {
-    GST_ELEMENT_ERROR (parse, STREAM, FAILED, (NULL),
-        ("min_size evolution %d -> %d; breaking to avoid looping",
-            old_min_size, min_size));
-    return GST_FLOW_ERROR;
-  }
-}
-
-/**
- * gst_base_parse_loop:
- * @pad: GstPad
- *
- * Loop that is used in pull mode to retrieve data from upstream.
- */
-static void
-gst_base_parse_loop (GstPad * pad)
-{
-  GstBaseParse *parse;
-  GstBaseParseClass *klass;
-  GstFlowReturn ret = GST_FLOW_OK;
-  GstBaseParseFrame frame = { 0, };
-
-  parse = GST_BASE_PARSE (gst_pad_get_parent (pad));
-  klass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  /* reverse playback:
-   * first fragment (closest to stop time) is handled normally below,
-   * then we pull in fragments going backwards */
-  if (parse->segment.rate < 0.0) {
-    /* check if we jumped back to a previous fragment,
-     * which is a post-first fragment */
-    if (parse->priv->offset < 0) {
-      ret = gst_base_parse_handle_previous_fragment (parse);
-      goto done;
-    }
-  }
-
-  ret = gst_base_parse_scan_frame (parse, klass, &frame, TRUE);
-  if (ret != GST_FLOW_OK)
-    goto done;
-
-  /* This always cleans up frame, even if error occurs */
-  ret = gst_base_parse_handle_and_push_frame (parse, klass, &frame);
-
-  /* eat expected eos signalling past segment in reverse playback */
-  if (parse->segment.rate < 0.0 && ret == GST_FLOW_UNEXPECTED &&
-      parse->segment.last_stop >= parse->segment.stop) {
-    GST_DEBUG_OBJECT (parse, "downstream has reached end of segment");
-    /* push what was accumulated during loop run */
-    gst_base_parse_process_fragment (parse, TRUE);
-    /* force previous fragment */
-    parse->priv->offset = -1;
-    ret = GST_FLOW_OK;
-  }
-
-done:
-  if (ret == GST_FLOW_UNEXPECTED)
-    goto eos;
-  else if (ret != GST_FLOW_OK)
-    goto pause;
-
-  gst_object_unref (parse);
-  return;
-
-  /* ERRORS */
-eos:
-  {
-    ret = GST_FLOW_UNEXPECTED;
-    GST_DEBUG_OBJECT (parse, "eos");
-    /* fall-through */
-  }
-pause:
-  {
-    gboolean push_eos = FALSE;
-
-    GST_DEBUG_OBJECT (parse, "pausing task, reason %s",
-        gst_flow_get_name (ret));
-    gst_pad_pause_task (parse->sinkpad);
-
-    if (ret == GST_FLOW_UNEXPECTED) {
-      /* handle end-of-stream/segment */
-      if (parse->segment.flags & GST_SEEK_FLAG_SEGMENT) {
-        gint64 stop;
-
-        if ((stop = parse->segment.stop) == -1)
-          stop = parse->segment.duration;
-
-        GST_DEBUG_OBJECT (parse, "sending segment_done");
-
-        gst_element_post_message
-            (GST_ELEMENT_CAST (parse),
-            gst_message_new_segment_done (GST_OBJECT_CAST (parse),
-                GST_FORMAT_TIME, stop));
-      } else {
-        /* If we STILL have zero frames processed, fire an error */
-        if (parse->priv->framecount == 0) {
-          GST_ELEMENT_ERROR (parse, STREAM, WRONG_TYPE,
-              ("No valid frames found before end of stream"), (NULL));
-        }
-        push_eos = TRUE;
-      }
-    } else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
-      /* for fatal errors we post an error message, wrong-state is
-       * not fatal because it happens due to flushes and only means
-       * that we should stop now. */
-      GST_ELEMENT_ERROR (parse, STREAM, FAILED, (NULL),
-          ("streaming stopped, reason %s", gst_flow_get_name (ret)));
-      push_eos = TRUE;
-    }
-    if (push_eos) {
-      /* newsegment before eos */
-      if (parse->pending_segment) {
-        gst_pad_push_event (parse->srcpad, parse->pending_segment);
-        parse->pending_segment = NULL;
-      }
-      gst_pad_push_event (parse->srcpad, gst_event_new_eos ());
-    }
-    gst_object_unref (parse);
-  }
-}
-
-
-/**
- * gst_base_parse_sink_activate:
- * @sinkpad: #GstPad to be activated.
- *
- * Returns: TRUE if activation succeeded.
- */
-static gboolean
-gst_base_parse_sink_activate (GstPad * sinkpad)
-{
-  GstBaseParse *parse;
-  gboolean result = TRUE;
-
-  parse = GST_BASE_PARSE (gst_pad_get_parent (sinkpad));
-
-  GST_DEBUG_OBJECT (parse, "sink activate");
-
-  if (gst_pad_check_pull_range (sinkpad)) {
-    GST_DEBUG_OBJECT (parse, "trying to activate in pull mode");
-    result = gst_pad_activate_pull (sinkpad, TRUE);
-  } else {
-    GST_DEBUG_OBJECT (parse, "trying to activate in push mode");
-    result = gst_pad_activate_push (sinkpad, TRUE);
-  }
-
-  GST_DEBUG_OBJECT (parse, "sink activate return %d", result);
-  gst_object_unref (parse);
-  return result;
-}
-
-
-/**
- * gst_base_parse_activate:
- * @parse: #GstBaseParse.
- * @active: TRUE if element will be activated, FALSE if deactivated.
- *
- * Returns: TRUE if the operation succeeded.
- */
-static gboolean
-gst_base_parse_activate (GstBaseParse * parse, gboolean active)
-{
-  GstBaseParseClass *klass;
-  gboolean result = FALSE;
-
-  GST_DEBUG_OBJECT (parse, "activate %d", active);
-
-  klass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  if (active) {
-    if (parse->priv->pad_mode == GST_ACTIVATE_NONE && klass->start)
-      result = klass->start (parse);
-  } else {
-    /* We must make sure streaming has finished before resetting things
-     * and calling the ::stop vfunc */
-    GST_PAD_STREAM_LOCK (parse->sinkpad);
-    GST_PAD_STREAM_UNLOCK (parse->sinkpad);
-
-    if (parse->priv->pad_mode != GST_ACTIVATE_NONE && klass->stop)
-      result = klass->stop (parse);
-
-    parse->priv->pad_mode = GST_ACTIVATE_NONE;
-  }
-  GST_DEBUG_OBJECT (parse, "activate return: %d", result);
-  return result;
-}
-
-
-/**
- * gst_base_parse_sink_activate_push:
- * @pad: #GstPad to be (de)activated.
- * @active: TRUE when activating, FALSE when deactivating.
- *
- * Returns: TRUE if (de)activation succeeded.
- */
-static gboolean
-gst_base_parse_sink_activate_push (GstPad * pad, gboolean active)
-{
-  gboolean result = TRUE;
-  GstBaseParse *parse;
-
-  parse = GST_BASE_PARSE (gst_pad_get_parent (pad));
-
-  GST_DEBUG_OBJECT (parse, "sink activate push %d", active);
-
-  result = gst_base_parse_activate (parse, active);
-
-  if (result)
-    parse->priv->pad_mode = active ? GST_ACTIVATE_PUSH : GST_ACTIVATE_NONE;
-
-  GST_DEBUG_OBJECT (parse, "sink activate push return: %d", result);
-
-  gst_object_unref (parse);
-  return result;
-}
-
-
-/**
- * gst_base_parse_sink_activate_pull:
- * @sinkpad: #GstPad to be (de)activated.
- * @active: TRUE when activating, FALSE when deactivating.
- *
- * Returns: TRUE if (de)activation succeeded.
- */
-static gboolean
-gst_base_parse_sink_activate_pull (GstPad * sinkpad, gboolean active)
-{
-  gboolean result = FALSE;
-  GstBaseParse *parse;
-
-  parse = GST_BASE_PARSE (gst_pad_get_parent (sinkpad));
-
-  GST_DEBUG_OBJECT (parse, "activate pull %d", active);
-
-  result = gst_base_parse_activate (parse, active);
-
-  if (result) {
-    if (active) {
-      parse->pending_segment = gst_event_new_new_segment (FALSE,
-          parse->segment.rate, parse->segment.format,
-          parse->segment.start, parse->segment.stop, parse->segment.last_stop);
-      result &= gst_pad_start_task (sinkpad,
-          (GstTaskFunction) gst_base_parse_loop, sinkpad);
-    } else {
-      result &= gst_pad_stop_task (sinkpad);
-    }
-  }
-
-  if (result)
-    parse->priv->pad_mode = active ? GST_ACTIVATE_PULL : GST_ACTIVATE_NONE;
-
-  GST_DEBUG_OBJECT (parse, "sink activate pull return: %d", result);
-
-  gst_object_unref (parse);
-  return result;
-}
-
-
-/**
- * gst_base_parse_set_duration:
- * @parse: #GstBaseParse.
- * @fmt: #GstFormat.
- * @duration: duration value.
- *
- * Sets the duration of the currently playing media. Subclass can use this
- * when it is able to determine duration and/or notices a change in the media
- * duration.  Alternatively, if @interval is non-zero (default), then stream
- * duration is determined based on estimated bitrate, and updated every @interval
- * frames. */
-void
-gst_base_parse_set_duration (GstBaseParse * parse,
-    GstFormat fmt, gint64 duration, gint interval)
-{
-  g_return_if_fail (parse != NULL);
-
-  if (parse->priv->upstream_has_duration) {
-    GST_DEBUG_OBJECT (parse, "using upstream duration; discarding update");
-    goto exit;
-  }
-
-  if (duration != parse->priv->duration) {
-    GstMessage *m;
-
-    m = gst_message_new_duration (GST_OBJECT (parse), fmt, duration);
-    gst_element_post_message (GST_ELEMENT (parse), m);
-
-    /* TODO: what about duration tag? */
-  }
-  parse->priv->duration = duration;
-  parse->priv->duration_fmt = fmt;
-  GST_DEBUG_OBJECT (parse, "set duration: %" G_GINT64_FORMAT, duration);
-  if (fmt == GST_FORMAT_TIME && GST_CLOCK_TIME_IS_VALID (duration)) {
-    if (interval != 0) {
-      GST_DEBUG_OBJECT (parse, "valid duration provided, disabling estimate");
-      interval = 0;
-    }
-  }
-  GST_DEBUG_OBJECT (parse, "set update interval: %d", interval);
-  parse->priv->update_interval = interval;
-exit:
-  return;
-}
-
-/**
- * gst_base_parse_set_seek:
- * @parse: #GstBaseParse.
- * @seek: #GstBaseParseSeekable.
- * @abitrate: average bitrate.
- *
- * Sets whether and how the media is seekable (in time).
- * Also optionally provides average bitrate detected in media (if non-zero),
- * e.g. based on metadata, as it will be posted to the application.
- *
- * By default, announced average bitrate is estimated, and seekability is assumed
- * possible based on estimated bitrate.
- */
-void
-gst_base_parse_set_seek (GstBaseParse * parse,
-    GstBaseParseSeekable seek, guint bitrate)
-{
-  parse->priv->seekable = seek;
-  parse->priv->bitrate = bitrate;
-  GST_DEBUG_OBJECT (parse, "seek %d, bitrate %d", seek, bitrate);
-}
-
-
-/**
- * gst_base_parse_set_min_frame_size:
- * @parse: #GstBaseParse.
- * @min_size: Minimum size of the data that this base class should give to
- *            subclass.
- *
- * Subclass can use this function to tell the base class that it needs to
- * give at least #min_size buffers.
- */
-void
-gst_base_parse_set_min_frame_size (GstBaseParse * parse, guint min_size)
-{
-  g_return_if_fail (parse != NULL);
-
-  parse->priv->min_frame_size = min_size;
-  GST_LOG_OBJECT (parse, "set frame_min_size: %d", min_size);
-}
-
-/**
- * gst_base_parse_set_format:
- * @parse: the #GstBaseParseFormat to set or unset
- * @flags: format flag to enable or disable
- * @on: whether or not to enable
- *
- * Set flags describing characteristics of parsed format.
- */
-void
-gst_base_parse_set_format (GstBaseParse * parse, GstBaseParseFormat flag,
-    gboolean on)
-{
-  g_return_if_fail (parse != NULL);
-
-  GST_LOG_OBJECT (parse, "set flag %d to %d", flag, on);
-  if (on)
-    parse->priv->format |= flag;
-  else
-    parse->priv->format &= ~flag;
-}
-
-/**
- * gst_base_parse_set_frame_props:
- * @parse: the #GstBaseParse to set
- * @fps_num: frames per second (numerator).
- * @fps_den: frames per second (denominator).
- * @lead_in: frames needed before a segment for subsequent decode
- * @lead_out: frames needed after a segment
- *
- * If frames per second is configured, parser can take care of buffer duration
- * and timestamping.  When performing segment clipping, or seeking to a specific
- * location, a corresponding decoder might need an initial @lead_in and a
- * following @lead_out number of frames to ensure the desired segment is
- * entirely filled upon decoding.
- */
-void
-gst_base_parse_set_frame_props (GstBaseParse * parse, guint fps_num,
-    guint fps_den, guint lead_in, guint lead_out)
-{
-  g_return_if_fail (parse != NULL);
-
-  parse->priv->fps_num = fps_num;
-  parse->priv->fps_den = fps_den;
-  if (!fps_num || !fps_den) {
-    GST_DEBUG_OBJECT (parse, "invalid fps (%d/%d), ignoring parameters",
-        fps_num, fps_den);
-    fps_num = fps_den = 0;
-    parse->priv->frame_duration = GST_CLOCK_TIME_NONE;
-    parse->priv->lead_in = parse->priv->lead_out = 0;
-    parse->priv->lead_in_ts = parse->priv->lead_out_ts = 0;
-  } else {
-    parse->priv->frame_duration =
-        gst_util_uint64_scale (GST_SECOND, fps_den, fps_num);
-    parse->priv->lead_in = lead_in;
-    parse->priv->lead_out = lead_out;
-    parse->priv->lead_in_ts =
-        gst_util_uint64_scale (GST_SECOND, fps_den * lead_in, fps_num);
-    parse->priv->lead_out_ts =
-        gst_util_uint64_scale (GST_SECOND, fps_den * lead_out, fps_num);
-    /* aim for about 1.5s to estimate duration */
-    if (parse->priv->update_interval < 0) {
-      parse->priv->update_interval = fps_num * 3 / (fps_den * 2);
-      GST_LOG_OBJECT (parse, "estimated update interval to %d frames",
-          parse->priv->update_interval);
-    }
-  }
-  GST_LOG_OBJECT (parse, "set fps: %d/%d => duration: %" G_GINT64_FORMAT " ms",
-      fps_num, fps_den, parse->priv->frame_duration / GST_MSECOND);
-  GST_LOG_OBJECT (parse, "set lead in: %d frames = %" G_GUINT64_FORMAT " ms, "
-      "lead out: %d frames = %" G_GUINT64_FORMAT " ms",
-      lead_in, parse->priv->lead_in_ts / GST_MSECOND,
-      lead_out, parse->priv->lead_out_ts / GST_MSECOND);
-}
-
-static gboolean
-gst_base_parse_get_duration (GstBaseParse * parse, GstFormat format,
-    GstClockTime * duration)
-{
-  gboolean res = FALSE;
-
-  g_return_val_if_fail (duration != NULL, FALSE);
-
-  *duration = GST_CLOCK_TIME_NONE;
-  if (parse->priv->duration != -1 && format == parse->priv->duration_fmt) {
-    GST_LOG_OBJECT (parse, "using provided duration");
-    *duration = parse->priv->duration;
-    res = TRUE;
-  } else if (parse->priv->duration != -1) {
-    GST_LOG_OBJECT (parse, "converting provided duration");
-    res = gst_base_parse_convert (parse, parse->priv->duration_fmt,
-        parse->priv->duration, format, (gint64 *) duration);
-  } else if (format == GST_FORMAT_TIME && parse->priv->estimated_duration != -1) {
-    GST_LOG_OBJECT (parse, "using estimated duration");
-    *duration = parse->priv->estimated_duration;
-    res = TRUE;
-  }
-
-  GST_LOG_OBJECT (parse, "res: %d, duration %" GST_TIME_FORMAT, res,
-      GST_TIME_ARGS (*duration));
-  return res;
-}
-
-/**
- * gst_base_parse_get_querytypes:
- * @pad: GstPad
- *
- * Returns: A table of #GstQueryType items describing supported query types.
- */
-static const GstQueryType *
-gst_base_parse_get_querytypes (GstPad * pad)
-{
-  static const GstQueryType list[] = {
-    GST_QUERY_POSITION,
-    GST_QUERY_DURATION,
-    GST_QUERY_FORMATS,
-    GST_QUERY_SEEKING,
-    GST_QUERY_CONVERT,
-    0
-  };
-
-  return list;
-}
-
-
-/**
- * gst_base_parse_query:
- * @pad: #GstPad.
- * @query: #GstQuery.
- *
- * Returns: TRUE on success.
- */
-static gboolean
-gst_base_parse_query (GstPad * pad, GstQuery * query)
-{
-  GstBaseParse *parse;
-  gboolean res = FALSE;
-
-  parse = GST_BASE_PARSE (GST_PAD_PARENT (pad));
-
-  GST_LOG_OBJECT (parse, "handling query: %" GST_PTR_FORMAT, query);
-
-  switch (GST_QUERY_TYPE (query)) {
-    case GST_QUERY_POSITION:
-    {
-      gint64 dest_value;
-      GstFormat format;
-
-      GST_DEBUG_OBJECT (parse, "position query");
-      gst_query_parse_position (query, &format, NULL);
-
-      GST_OBJECT_LOCK (parse);
-      if (format == GST_FORMAT_BYTES) {
-        dest_value = parse->priv->offset;
-        res = TRUE;
-      } else if (format == parse->segment.format &&
-          GST_CLOCK_TIME_IS_VALID (parse->segment.last_stop)) {
-        dest_value = parse->segment.last_stop;
-        res = TRUE;
-      }
-      GST_OBJECT_UNLOCK (parse);
-
-      if (res)
-        gst_query_set_position (query, format, dest_value);
-      else {
-        res = gst_pad_query_default (pad, query);
-        if (!res) {
-          /* no precise result, upstream no idea either, then best estimate */
-          /* priv->offset is updated in both PUSH/PULL modes */
-          res = gst_base_parse_convert (parse,
-              GST_FORMAT_BYTES, parse->priv->offset, format, &dest_value);
-        }
-      }
-      break;
-    }
-    case GST_QUERY_DURATION:
-    {
-      GstFormat format;
-      GstClockTime duration;
-
-      GST_DEBUG_OBJECT (parse, "duration query");
-      gst_query_parse_duration (query, &format, NULL);
-
-      /* consult upstream */
-      res = gst_pad_query_default (pad, query);
-
-      /* otherwise best estimate from us */
-      if (!res) {
-        res = gst_base_parse_get_duration (parse, format, &duration);
-        if (res)
-          gst_query_set_duration (query, format, duration);
-      }
-      break;
-    }
-    case GST_QUERY_SEEKING:
-    {
-      GstFormat fmt;
-      GstClockTime duration = GST_CLOCK_TIME_NONE;
-      gboolean seekable = FALSE;
-
-      GST_DEBUG_OBJECT (parse, "seeking query");
-      gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
-
-      /* consult upstream */
-      res = gst_pad_query_default (pad, query);
-
-      /* we may be able to help if in TIME */
-      if (fmt == GST_FORMAT_TIME &&
-          parse->priv->seekable > GST_BASE_PARSE_SEEK_NONE) {
-        gst_query_parse_seeking (query, &fmt, &seekable, NULL, NULL);
-        /* already OK if upstream takes care */
-        GST_LOG_OBJECT (parse, "upstream handled %d, seekable %d",
-            res, seekable);
-        if (!(res && seekable)) {
-          if (!gst_base_parse_get_duration (parse, GST_FORMAT_TIME, &duration)
-              || duration == -1) {
-            /* seekable if we still have a chance to get duration later on */
-            seekable =
-                parse->priv->upstream_seekable && parse->priv->update_interval;
-          } else {
-            seekable = parse->priv->upstream_seekable;
-            GST_LOG_OBJECT (parse, "already determine upstream seekabled: %d",
-                seekable);
-          }
-          gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0, duration);
-          res = TRUE;
-        }
-      }
-      break;
-    }
-    case GST_QUERY_FORMATS:
-      gst_query_set_formatsv (query, 3, fmtlist);
-      res = TRUE;
-      break;
-    case GST_QUERY_CONVERT:
-    {
-      GstFormat src_format, dest_format;
-      gint64 src_value, dest_value;
-
-      gst_query_parse_convert (query, &src_format, &src_value,
-          &dest_format, &dest_value);
-
-      res = gst_base_parse_convert (parse, src_format, src_value,
-          dest_format, &dest_value);
-      if (res) {
-        gst_query_set_convert (query, src_format, src_value,
-            dest_format, dest_value);
-      }
-      break;
-    }
-    default:
-      res = gst_pad_query_default (pad, query);
-      break;
-  }
-  return res;
-}
-
-/* scans for a cluster start from @pos,
- * return GST_FLOW_OK and frame position/time in @pos/@time if found */
-static GstFlowReturn
-gst_base_parse_find_frame (GstBaseParse * parse, gint64 * pos,
-    GstClockTime * time, GstClockTime * duration)
-{
-  GstBaseParseClass *klass;
-  gint64 orig_offset;
-  gboolean orig_drain, orig_discont;
-  GstFlowReturn ret = GST_FLOW_OK;
-  GstBuffer *buf = NULL;
-  GstBaseParseFrame frame = { 0, };
-
-  g_return_val_if_fail (GST_FLOW_ERROR, pos != NULL);
-  g_return_val_if_fail (GST_FLOW_ERROR, time != NULL);
-  g_return_val_if_fail (GST_FLOW_ERROR, duration != NULL);
-
-  klass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  *time = GST_CLOCK_TIME_NONE;
-  *duration = GST_CLOCK_TIME_NONE;
-
-  /* save state */
-  orig_offset = parse->priv->offset;
-  orig_discont = parse->priv->discont;
-  orig_drain = parse->priv->drain;
-
-  GST_DEBUG_OBJECT (parse, "scanning for frame starting at %" G_GINT64_FORMAT
-      " (%#" G_GINT64_MODIFIER "x)", *pos, *pos);
-
-  /* jump elsewhere and locate next frame */
-  parse->priv->offset = *pos;
-  ret = gst_base_parse_scan_frame (parse, klass, &frame, FALSE);
-  if (ret != GST_FLOW_OK)
-    goto done;
-
-  buf = frame.buffer;
-  GST_LOG_OBJECT (parse,
-      "peek parsing frame at offset %" G_GUINT64_FORMAT
-      " (%#" G_GINT64_MODIFIER "x) of size %d",
-      GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf));
-
-  /* get offset first, subclass parsing might dump other stuff in there */
-  *pos = GST_BUFFER_OFFSET (buf);
-  ret = klass->parse_frame (parse, &frame);
-  buf = frame.buffer;
-
-  /* but it should provide proper time */
-  *time = GST_BUFFER_TIMESTAMP (buf);
-  *duration = GST_BUFFER_DURATION (buf);
-  gst_base_parse_frame_clear (parse, &frame);
-
-  GST_LOG_OBJECT (parse,
-      "frame with time %" GST_TIME_FORMAT " at offset %" G_GINT64_FORMAT,
-      GST_TIME_ARGS (*time), *pos);
-
-done:
-  /* restore state */
-  parse->priv->offset = orig_offset;
-  parse->priv->discont = orig_discont;
-  parse->priv->drain = orig_drain;
-
-  return ret;
-}
-
-/* bisect and scan through file for frame starting before @time,
- * returns OK and @time/@offset if found, NONE and/or error otherwise
- * If @time == G_MAXINT64, scan for duration ( == last frame) */
-static GstFlowReturn
-gst_base_parse_locate_time (GstBaseParse * parse, GstClockTime * _time,
-    gint64 * _offset)
-{
-  GstFlowReturn ret = GST_FLOW_OK;
-  gint64 lpos, hpos, newpos;
-  GstClockTime time, ltime, htime, newtime, dur;
-  gboolean cont = TRUE;
-  const GstClockTime tolerance = TARGET_DIFFERENCE;
-  const guint chunk = 4 * 1024;
-
-  g_return_val_if_fail (_time != NULL, GST_FLOW_ERROR);
-  g_return_val_if_fail (_offset != NULL, GST_FLOW_ERROR);
-
-  /* TODO also make keyframe aware if useful some day */
-
-  time = *_time;
-
-  /* basic cases */
-  if (time == 0) {
-    *_offset = 0;
-    return GST_FLOW_OK;
-  }
-
-  if (time == -1) {
-    *_offset = -1;
-    return GST_FLOW_OK;
-  }
-
-  /* do not know at first */
-  *_offset = -1;
-  *_time = GST_CLOCK_TIME_NONE;
-
-  /* need initial positions; start and end */
-  lpos = parse->priv->first_frame_offset;
-  ltime = parse->priv->first_frame_ts;
-  htime = parse->priv->duration;
-  hpos = parse->priv->upstream_size;
-
-  /* check preconditions are satisfied;
-   * start and end are needed, except for special case where we scan for
-   * last frame to determine duration */
-  if (parse->priv->pad_mode != GST_ACTIVATE_PULL || !hpos ||
-      !GST_CLOCK_TIME_IS_VALID (ltime) ||
-      (!GST_CLOCK_TIME_IS_VALID (htime) && time != G_MAXINT64)) {
-    return GST_FLOW_OK;
-  }
-
-  /* shortcut cases */
-  if (time < ltime) {
-    goto exit;
-  } else if (time < ltime + tolerance) {
-    *_offset = lpos;
-    *_time = ltime;
-    goto exit;
-  } else if (time >= htime) {
-    *_offset = hpos;
-    *_time = htime;
-    goto exit;
-  }
-
-  while (htime > ltime && cont) {
-    GST_LOG_OBJECT (parse,
-        "lpos: %" G_GUINT64_FORMAT ", ltime: %" GST_TIME_FORMAT, lpos,
-        GST_TIME_ARGS (ltime));
-    GST_LOG_OBJECT (parse,
-        "hpos: %" G_GUINT64_FORMAT ", htime: %" GST_TIME_FORMAT, hpos,
-        GST_TIME_ARGS (htime));
-    if (G_UNLIKELY (time == G_MAXINT64)) {
-      newpos = hpos;
-    } else if (G_LIKELY (hpos > lpos)) {
-      newpos =
-          gst_util_uint64_scale (hpos - lpos, time - ltime, htime - ltime) +
-          lpos - chunk;
-    } else {
-      /* should mean lpos == hpos, since lpos <= hpos is invariant */
-      newpos = lpos;
-      /* we check this case once, but not forever, so break loop */
-      cont = FALSE;
-    }
-
-    /* ensure */
-    newpos = CLAMP (newpos, lpos, hpos);
-    GST_LOG_OBJECT (parse,
-        "estimated _offset for %" GST_TIME_FORMAT ": %" G_GINT64_FORMAT,
-        GST_TIME_ARGS (time), newpos);
-
-    ret = gst_base_parse_find_frame (parse, &newpos, &newtime, &dur);
-    if (ret == GST_FLOW_UNEXPECTED) {
-      /* heuristic HACK */
-      hpos = MAX (lpos, hpos - chunk);
-      continue;
-    } else if (ret != GST_FLOW_OK) {
-      goto exit;
-    }
-
-    if (newtime == -1 || newpos == -1) {
-      GST_DEBUG_OBJECT (parse, "subclass did not provide metadata; aborting");
-      break;
-    }
-
-    if (G_UNLIKELY (time == G_MAXINT64)) {
-      *_offset = newpos;
-      *_time = newtime;
-      if (GST_CLOCK_TIME_IS_VALID (dur))
-        *_time += dur;
-      break;
-    } else if (newtime > time) {
-      /* overshoot */
-      hpos = (newpos >= hpos) ? MAX (lpos, hpos - chunk) : MAX (lpos, newpos);
-      htime = newtime;
-    } else if (newtime + tolerance > time) {
-      /* close enough undershoot */
-      *_offset = newpos;
-      *_time = newtime;
-      break;
-    } else if (newtime < ltime) {
-      /* so a position beyond lpos resulted in earlier time than ltime ... */
-      GST_DEBUG_OBJECT (parse, "non-ascending time; aborting");
-      break;
-    } else {
-      /* undershoot too far */
-      newpos += newpos == lpos ? chunk : 0;
-      lpos = CLAMP (newpos, lpos, hpos);
-      ltime = newtime;
-    }
-  }
-
-exit:
-  GST_LOG_OBJECT (parse, "return offset %" G_GINT64_FORMAT ", time %"
-      GST_TIME_FORMAT, *_offset, GST_TIME_ARGS (*_time));
-  return ret;
-}
-
-static gint64
-gst_base_parse_find_offset (GstBaseParse * parse, GstClockTime time,
-    gboolean before, GstClockTime * _ts)
-{
-  gint64 bytes = 0, ts = 0;
-  GstIndexEntry *entry = NULL;
-
-  if (time == GST_CLOCK_TIME_NONE) {
-    ts = time;
-    bytes = -1;
-    goto exit;
-  }
-
-  GST_OBJECT_LOCK (parse);
-  if (parse->priv->index) {
-    /* Let's check if we have an index entry for that time */
-    entry = gst_index_get_assoc_entry (parse->priv->index,
-        parse->priv->index_id,
-        before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER,
-        GST_ASSOCIATION_FLAG_KEY_UNIT, GST_FORMAT_TIME, time);
-  }
-
-  if (entry) {
-    gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &bytes);
-    gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &ts);
-
-    GST_DEBUG_OBJECT (parse, "found index entry for %" GST_TIME_FORMAT
-        " at %" GST_TIME_FORMAT ", offset %" G_GINT64_FORMAT,
-        GST_TIME_ARGS (time), GST_TIME_ARGS (ts), bytes);
-  } else {
-    GST_DEBUG_OBJECT (parse, "no index entry found for %" GST_TIME_FORMAT,
-        GST_TIME_ARGS (time));
-    if (!before) {
-      bytes = -1;
-      ts = GST_CLOCK_TIME_NONE;
-    }
-  }
-  GST_OBJECT_UNLOCK (parse);
-
-exit:
-  if (_ts)
-    *_ts = ts;
-
-  return bytes;
-}
-
-
-/**
- * gst_base_parse_handle_seek:
- * @parse: #GstBaseParse.
- * @event: #GstEvent.
- *
- * Returns: TRUE if seek succeeded.
- */
-static gboolean
-gst_base_parse_handle_seek (GstBaseParse * parse, GstEvent * event)
-{
-  gdouble rate;
-  GstFormat format;
-  GstSeekFlags flags;
-  GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
-  gboolean flush, update, res = TRUE, accurate;
-  gint64 cur, stop, seekpos, seekstop;
-  GstSegment seeksegment = { 0, };
-  GstFormat dstformat;
-  GstClockTime start_ts;
-
-  gst_event_parse_seek (event, &rate, &format, &flags,
-      &cur_type, &cur, &stop_type, &stop);
-
-  GST_DEBUG_OBJECT (parse, "seek to format %s, rate %f, "
-      "start type %d at %" GST_TIME_FORMAT ", end type %d at %"
-      GST_TIME_FORMAT, gst_format_get_name (format), rate,
-      cur_type, GST_TIME_ARGS (cur), stop_type, GST_TIME_ARGS (stop));
-
-  /* no negative rates in push mode */
-  if (rate < 0.0 && parse->priv->pad_mode == GST_ACTIVATE_PUSH)
-    goto negative_rate;
-
-  if (cur_type != GST_SEEK_TYPE_SET ||
-      (stop_type != GST_SEEK_TYPE_SET && stop_type != GST_SEEK_TYPE_NONE))
-    goto wrong_type;
-
-  /* For any format other than TIME, see if upstream handles
-   * it directly or fail. For TIME, try upstream, but do it ourselves if
-   * it fails upstream */
-  if (format != GST_FORMAT_TIME) {
-    /* default action delegates to upstream */
-    res = FALSE;
-    goto done;
-  } else {
-    gst_event_ref (event);
-    if ((res = gst_pad_push_event (parse->sinkpad, event))) {
-      goto done;
-    }
-  }
-
-  /* get flush flag */
-  flush = flags & GST_SEEK_FLAG_FLUSH;
-
-  /* copy segment, we need this because we still need the old
-   * segment when we close the current segment. */
-  memcpy (&seeksegment, &parse->segment, sizeof (GstSegment));
-
-  GST_DEBUG_OBJECT (parse, "configuring seek");
-  gst_segment_set_seek (&seeksegment, rate, format, flags,
-      cur_type, cur, stop_type, stop, &update);
-
-  /* accurate seeking implies seek tables are used to obtain position,
-   * and the requested segment is maintained exactly, not adjusted any way */
-  accurate = flags & GST_SEEK_FLAG_ACCURATE;
-
-  /* maybe we can be accurate for (almost) free */
-  gst_base_parse_find_offset (parse, seeksegment.last_stop, TRUE, &start_ts);
-  if (seeksegment.last_stop <= start_ts + TARGET_DIFFERENCE) {
-    GST_DEBUG_OBJECT (parse, "accurate seek possible");
-    accurate = TRUE;
-  }
-  if (accurate) {
-    GstClockTime startpos = seeksegment.last_stop;
-
-    /* accurate requested, so ... seek a bit before target */
-    if (startpos < parse->priv->lead_in_ts)
-      startpos = 0;
-    else
-      startpos -= parse->priv->lead_in_ts;
-    seekpos = gst_base_parse_find_offset (parse, startpos, TRUE, &start_ts);
-    seekstop = gst_base_parse_find_offset (parse, seeksegment.stop, FALSE,
-        NULL);
-  } else {
-    start_ts = seeksegment.last_stop;
-    dstformat = GST_FORMAT_BYTES;
-    if (!gst_pad_query_convert (parse->srcpad, format, seeksegment.last_stop,
-            &dstformat, &seekpos))
-      goto convert_failed;
-    if (!gst_pad_query_convert (parse->srcpad, format, seeksegment.stop,
-            &dstformat, &seekstop))
-      goto convert_failed;
-  }
-
-  GST_DEBUG_OBJECT (parse,
-      "seek position %" G_GINT64_FORMAT " in bytes: %" G_GINT64_FORMAT,
-      start_ts, seekpos);
-  GST_DEBUG_OBJECT (parse,
-      "seek stop %" G_GINT64_FORMAT " in bytes: %" G_GINT64_FORMAT,
-      seeksegment.stop, seekstop);
-
-  if (parse->priv->pad_mode == GST_ACTIVATE_PULL) {
-    gint64 last_stop;
-
-    GST_DEBUG_OBJECT (parse, "seek in PULL mode");
-
-    if (flush) {
-      if (parse->srcpad) {
-        GST_DEBUG_OBJECT (parse, "sending flush start");
-        gst_pad_push_event (parse->srcpad, gst_event_new_flush_start ());
-        /* unlock upstream pull_range */
-        gst_pad_push_event (parse->sinkpad, gst_event_new_flush_start ());
-      }
-    } else {
-      gst_pad_pause_task (parse->sinkpad);
-    }
-
-    /* we should now be able to grab the streaming thread because we stopped it
-     * with the above flush/pause code */
-    GST_PAD_STREAM_LOCK (parse->sinkpad);
-
-    /* save current position */
-    last_stop = parse->segment.last_stop;
-    GST_DEBUG_OBJECT (parse, "stopped streaming at %" G_GINT64_FORMAT,
-        last_stop);
-
-    /* now commit to new position */
-
-    /* prepare for streaming again */
-    if (flush) {
-      GST_DEBUG_OBJECT (parse, "sending flush stop");
-      gst_pad_push_event (parse->srcpad, gst_event_new_flush_stop ());
-      gst_pad_push_event (parse->sinkpad, gst_event_new_flush_stop ());
-      gst_base_parse_clear_queues (parse);
-    } else {
-      if (parse->close_segment)
-        gst_event_unref (parse->close_segment);
-
-      parse->close_segment = gst_event_new_new_segment (TRUE,
-          parse->segment.rate, parse->segment.format,
-          parse->segment.accum, parse->segment.last_stop, parse->segment.accum);
-
-      /* keep track of our last_stop */
-      seeksegment.accum = parse->segment.last_stop;
-
-      GST_DEBUG_OBJECT (parse, "Created close seg format %d, "
-          "start = %" GST_TIME_FORMAT ", stop = %" GST_TIME_FORMAT
-          ", pos = %" GST_TIME_FORMAT, format,
-          GST_TIME_ARGS (parse->segment.accum),
-          GST_TIME_ARGS (parse->segment.last_stop),
-          GST_TIME_ARGS (parse->segment.accum));
-    }
-
-    memcpy (&parse->segment, &seeksegment, sizeof (GstSegment));
-
-    /* store the newsegment event so it can be sent from the streaming thread. */
-    if (parse->pending_segment)
-      gst_event_unref (parse->pending_segment);
-
-    /* This will be sent later in _loop() */
-    parse->pending_segment =
-        gst_event_new_new_segment (FALSE, parse->segment.rate,
-        parse->segment.format, parse->segment.start, parse->segment.stop,
-        parse->segment.start);
-
-    GST_DEBUG_OBJECT (parse, "Created newseg format %d, "
-        "start = %" GST_TIME_FORMAT ", stop = %" GST_TIME_FORMAT
-        ", pos = %" GST_TIME_FORMAT, format,
-        GST_TIME_ARGS (parse->segment.start),
-        GST_TIME_ARGS (parse->segment.stop),
-        GST_TIME_ARGS (parse->segment.start));
-
-    /* one last chance in pull mode to stay accurate;
-     * maybe scan and subclass can find where to go */
-    if (!accurate) {
-      gint64 scanpos;
-      GstClockTime ts = seeksegment.last_stop;
-
-      gst_base_parse_locate_time (parse, &ts, &scanpos);
-      if (scanpos >= 0) {
-        accurate = TRUE;
-        seekpos = scanpos;
-        /* running collected index now consists of several intervals,
-         * so optimized check no longer possible */
-        parse->priv->index_last_valid = FALSE;
-        parse->priv->index_last_offset = 0;
-        parse->priv->index_last_ts = 0;
-      }
-    }
-
-    /* mark discont if we are going to stream from another position. */
-    if (seekpos != parse->priv->offset) {
-      GST_DEBUG_OBJECT (parse,
-          "mark DISCONT, we did a seek to another position");
-      parse->priv->offset = seekpos;
-      parse->priv->last_offset = seekpos;
-      parse->priv->seen_keyframe = FALSE;
-      parse->priv->discont = TRUE;
-      parse->priv->next_ts = start_ts;
-      parse->priv->last_ts = GST_CLOCK_TIME_NONE;
-      parse->priv->sync_offset = seekpos;
-      parse->priv->exact_position = accurate;
-    }
-
-    /* Start streaming thread if paused */
-    gst_pad_start_task (parse->sinkpad,
-        (GstTaskFunction) gst_base_parse_loop, parse->sinkpad);
-
-    GST_PAD_STREAM_UNLOCK (parse->sinkpad);
-
-    /* handled seek */
-    res = TRUE;
-  } else {
-    GstEvent *new_event;
-    GstBaseParseSeek *seek;
-
-    /* The only thing we need to do in PUSH-mode is to send the
-       seek event (in bytes) to upstream. Segment / flush handling happens
-       in corresponding src event handlers */
-    GST_DEBUG_OBJECT (parse, "seek in PUSH mode");
-    if (seekstop >= 0 && seekpos <= seekpos)
-      seekstop = seekpos;
-    new_event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flush,
-        GST_SEEK_TYPE_SET, seekpos, stop_type, seekstop);
-
-    /* store segment info so its precise details can be reconstructed when
-     * receiving newsegment;
-     * this matters for all details when accurate seeking,
-     * is most useful to preserve NONE stop time otherwise */
-    seek = g_new0 (GstBaseParseSeek, 1);
-    seek->segment = seeksegment;
-    seek->accurate = accurate;
-    seek->offset = seekpos;
-    seek->start_ts = start_ts;
-    GST_OBJECT_LOCK (parse);
-    /* less optimal, but preserves order */
-    parse->priv->pending_seeks =
-        g_slist_append (parse->priv->pending_seeks, seek);
-    GST_OBJECT_UNLOCK (parse);
-
-    res = gst_pad_push_event (parse->sinkpad, new_event);
-
-    if (!res) {
-      GST_OBJECT_LOCK (parse);
-      parse->priv->pending_seeks =
-          g_slist_remove (parse->priv->pending_seeks, seek);
-      GST_OBJECT_UNLOCK (parse);
-      g_free (seek);
-    }
-  }
-
-done:
-  /* handled event is ours to free */
-  if (res)
-    gst_event_unref (event);
-  return res;
-
-  /* ERRORS */
-negative_rate:
-  {
-    GST_DEBUG_OBJECT (parse, "negative playback rates delegated upstream.");
-    res = FALSE;
-    goto done;
-  }
-wrong_type:
-  {
-    GST_DEBUG_OBJECT (parse, "unsupported seek type.");
-    res = FALSE;
-    goto done;
-  }
-convert_failed:
-  {
-    GST_DEBUG_OBJECT (parse, "conversion TIME to BYTES failed.");
-    res = FALSE;
-    goto done;
-  }
-}
-
-/**
- * gst_base_parse_handle_tag:
- * @parse: #GstBaseParse.
- * @event: #GstEvent.
- *
- * Checks if bitrates are available from upstream tags so that we don't
- * override them later
- */
-static void
-gst_base_parse_handle_tag (GstBaseParse * parse, GstEvent * event)
-{
-  GstTagList *taglist = NULL;
-  guint tmp;
-
-  gst_event_parse_tag (event, &taglist);
-
-  if (gst_tag_list_get_uint (taglist, GST_TAG_MINIMUM_BITRATE, &tmp)) {
-    GST_DEBUG_OBJECT (parse, "upstream min bitrate %d", tmp);
-    parse->priv->post_min_bitrate = FALSE;
-  }
-  if (gst_tag_list_get_uint (taglist, GST_TAG_BITRATE, &tmp)) {
-    GST_DEBUG_OBJECT (parse, "upstream avg bitrate %d", tmp);
-    parse->priv->post_avg_bitrate = FALSE;
-  }
-  if (gst_tag_list_get_uint (taglist, GST_TAG_MAXIMUM_BITRATE, &tmp)) {
-    GST_DEBUG_OBJECT (parse, "upstream max bitrate %d", tmp);
-    parse->priv->post_max_bitrate = FALSE;
-  }
-}
-
-/**
- * gst_base_parse_sink_setcaps:
- * @pad: #GstPad.
- * @caps: #GstCaps.
- *
- * Returns: TRUE if caps were accepted.
- */
-static gboolean
-gst_base_parse_sink_setcaps (GstPad * pad, GstCaps * caps)
-{
-  GstBaseParse *parse;
-  GstBaseParseClass *klass;
-  gboolean res = TRUE;
-
-  parse = GST_BASE_PARSE (GST_PAD_PARENT (pad));
-  klass = GST_BASE_PARSE_GET_CLASS (parse);
-
-  GST_DEBUG_OBJECT (parse, "caps: %" GST_PTR_FORMAT, caps);
-
-  if (klass->set_sink_caps)
-    res = klass->set_sink_caps (parse, caps);
-
-  return res;
-}
-
-static void
-gst_base_parse_set_index (GstElement * element, GstIndex * index)
-{
-  GstBaseParse *parse = GST_BASE_PARSE (element);
-
-  GST_OBJECT_LOCK (parse);
-  if (parse->priv->index)
-    gst_object_unref (parse->priv->index);
-  if (index) {
-    parse->priv->index = gst_object_ref (index);
-    gst_index_get_writer_id (index, GST_OBJECT (element),
-        &parse->priv->index_id);
-    parse->priv->own_index = FALSE;
-  } else
-    parse->priv->index = NULL;
-  GST_OBJECT_UNLOCK (parse);
-}
-
-static GstIndex *
-gst_base_parse_get_index (GstElement * element)
-{
-  GstBaseParse *parse = GST_BASE_PARSE (element);
-  GstIndex *result = NULL;
-
-  GST_OBJECT_LOCK (parse);
-  if (parse->priv->index)
-    result = gst_object_ref (parse->priv->index);
-  GST_OBJECT_UNLOCK (parse);
-
-  return result;
-}
-
-static GstStateChangeReturn
-gst_base_parse_change_state (GstElement * element, GstStateChange transition)
-{
-  GstBaseParse *parse;
-  GstStateChangeReturn result;
-
-  parse = GST_BASE_PARSE (element);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_READY_TO_PAUSED:
-      /* If this is our own index destroy it as the
-       * old entries might be wrong for the new stream */
-      if (parse->priv->own_index) {
-        gst_object_unref (parse->priv->index);
-        parse->priv->index = NULL;
-        parse->priv->own_index = FALSE;
-      }
-
-      /* If no index was created, generate one */
-      if (G_UNLIKELY (!parse->priv->index)) {
-        GST_DEBUG_OBJECT (parse, "no index provided creating our own");
-
-        parse->priv->index = gst_index_factory_make ("memindex");
-        gst_index_get_writer_id (parse->priv->index, GST_OBJECT (parse),
-            &parse->priv->index_id);
-        parse->priv->own_index = TRUE;
-      }
-      break;
-    default:
-      break;
-  }
-
-  result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_PAUSED_TO_READY:
-      gst_base_parse_reset (parse);
-      break;
-    default:
-      break;
-  }
-
-  return result;
-}
diff --git a/gst-libs/gst/baseparse/gstbaseparse.h b/gst-libs/gst/baseparse/gstbaseparse.h
deleted file mode 100644
index d0f43ee7c..000000000
--- a/gst-libs/gst/baseparse/gstbaseparse.h
+++ /dev/null
@@ -1,344 +0,0 @@
-/* GStreamer
- * Copyright (C) 2008 Nokia Corporation. All rights reserved.
- *
- * Contact: Stefan Kost <stefan.kost@nokia.com>
- *
- * 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_BASE_PARSE_H__
-#define __GST_BASE_PARSE_H__
-
-#include <gst/gst.h>
-#include <gst/base/gstadapter.h>
-
-G_BEGIN_DECLS
-
-#define GST_TYPE_BASE_PARSE		   (gst_base_parse_get_type())
-#define GST_BASE_PARSE(obj)		   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_PARSE,GstBaseParse))
-#define GST_BASE_PARSE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_PARSE,GstBaseParseClass))
-#define GST_BASE_PARSE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_BASE_PARSE,GstBaseParseClass))
-#define GST_IS_BASE_PARSE(obj)	   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_PARSE))
-#define GST_IS_BASE_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_PARSE))
-#define GST_BASE_PARSE_CAST(obj)	((GstBaseParse *)(obj))
-
-/**
- * GST_BASE_PARSE_SINK_NAME:
- *
- * the name of the templates for the sink pad
- */
-#define GST_BASE_PARSE_SINK_NAME	"sink"
-/**
- * GST_BASE_PARSE_SRC_NAME:
- *
- * the name of the templates for the source pad
- */
-#define GST_BASE_PARSE_SRC_NAME	        "src"
-
-/**
- * GST_BASE_PARSE_SRC_PAD:
- * @obj: base parse instance
- *
- * Gives the pointer to the source #GstPad object of the element.
- *
- * Since: 0.10.x
- */
-#define GST_BASE_PARSE_SRC_PAD(obj)	(GST_BASE_PARSE_CAST (obj)->srcpad)
-
-/**
- * GST_BASE_PARSE_SINK_PAD:
- * @obj: base parse instance
- *
- * Gives the pointer to the sink #GstPad object of the element.
- *
- * Since: 0.10.x
- */
-#define GST_BASE_PARSE_SINK_PAD(obj)	(GST_BASE_PARSE_CAST (obj)->sinkpad)
-
-/**
- * GST_BASE_PARSE_SEGMENT:
- * @obj: base parse instance
- *
- * Gives the segment of the element.
- *
- * Since: 0.10.x
- */
-#define GST_BASE_PARSE_SEGMENT(obj)     (GST_BASE_PARSE_CAST (obj)->segment)
-
-/**
- * GST_BASE_PARSE_FLOW_DROPPED:
- *
- * A #GstFlowReturn that can be returned from parse_frame to
- * indicate that no output buffer was generated, or from pre_push_buffer to
- * to forego pushing buffer.
- *
- * Since: 0.10.x
- */
-#define GST_BASE_PARSE_FLOW_DROPPED     GST_FLOW_CUSTOM_SUCCESS
-
-/**
- * GstBaseParseFrameFlags:
- * @GST_BASE_PARSE_FRAME_FLAG_NONE: no flag
- * @GST_BASE_PARSE_FRAME_FLAG_SYNC: indicates if parsing is 'in sync'
- * @GST_BASE_PARSE_FRAME_FLAG_DRAIN: indicates if parser is 'draining'.
- *   That is, leftover data (e.g. in FLUSH or EOS situation) is being parsed.
- * @GST_BASE_PARSE_FRAME_FLAG_NO_FRAME: set to indicate this buffer should not be
- *   counted as frame, e.g. if this frame is dependent on a previous one.
- *   As it is not counted as a frame, bitrate increases but frame to time
- *   conversions are maintained.
- * @GST_BASE_PARSE_FRAME_FLAG_CLIP: @pre_push_buffer can set this to indicate
- *    that regular segment clipping can still be performed (as opposed to
- *    any custom one having been done).
- *
- * Flags to be used in a #GstBaseParseFrame.
- *
- * Since: 0.10.x
- */
-typedef enum {
-  GST_BASE_PARSE_FRAME_FLAG_NONE         = 0,
-  GST_BASE_PARSE_FRAME_FLAG_SYNC         = (1 << 0),
-  GST_BASE_PARSE_FRAME_FLAG_DRAIN        = (1 << 1),
-  GST_BASE_PARSE_FRAME_FLAG_NO_FRAME     = (1 << 2),
-  GST_BASE_PARSE_FRAME_FLAG_CLIP         = (1 << 3)
-} GstBaseParseFrameFlags;
-
-/**
- * GstBaseParseFrame:
- * @buffer: data to check for valid frame or parsed frame.
- *   Subclass is allowed to replace this buffer.
- * @overhead: subclass can set this to indicates the metadata overhead
- *   for the given frame, which is then used to enable more accurate bitrate
- *   computations. If this is -1, it is assumed that this frame should be
- *   skipped in bitrate calculation.
- * @flags: a combination of input and output #GstBaseParseFrameFlags that
- *  convey additional context to subclass or allow subclass to tune
- *  subsequent #GstBaseParse actions.
- *
- * Frame (context) data passed to each frame parsing virtual methods.  In
- * addition to providing the data to be checked for a valid frame or an already
- * identified frame, it conveys additional metadata or control information
- * from and to the subclass w.r.t. the particular frame in question (rather
- * than global parameters).  Some of these may apply to each parsing stage, others
- * only to some a particular one.  These parameters are effectively zeroed at start
- * of each frame's processing, i.e. parsing virtual method invocation sequence.
- *
- * Since: 0.10.x
- */
-typedef struct {
-  GstBuffer       *buffer;
-  guint           flags;
-  gint            overhead;
-} GstBaseParseFrame;
-
-/**
- * GST_BASE_PARSE_FRAME_SYNC:
- * @frame: base parse frame instance
- *
- * Obtains current sync status indicated in frame.
- *
- * Since: 0.10.x
- */
-#define GST_BASE_PARSE_FRAME_SYNC(frame)     (!!(frame->flags & GST_BASE_PARSE_FRAME_FLAG_SYNC))
-
-/**
- * GST_BASE_PARSE_FRAME_DRAIN:
- * @frame: base parse frame instance
- *
- * Obtains current drain status indicated in frame.
- *
- * Since: 0.10.x
- */
-#define GST_BASE_PARSE_FRAME_DRAIN(frame)    (!!(frame->flags & GST_BASE_PARSE_FRAME_FLAG_DRAIN))
-
-/**
- * GstBaseParseFormat:
- * @GST_BASE_PARSE_FORMAT_NONE: default setting
- * @GST_BASE_PARSE_FORMAT_PASSTHROUGH: nature of format or configuration
- *   does not allow (much) parsing, so parser should operate in passthrough mode
- *   (which only applies operating in pull mode).  That is, incoming buffers
- *   are pushed through unmodified, i.e. no @check_valid_frame or @parse_frame
- *   callbacks will be invoked.  On the other hand, @pre_push_buffer is still invoked,
- *   where subclass can perform as much or as little is appropriate for
- *   "passthrough" semantics.
- * @GST_BASE_PARSE_FORMAT_HAS_TIME: frames carry timing info which subclass
- *   can (generally) parse and provide.  In particular, intrinsic time
- *   (rather than estimated) can be obtained following seek.
- *
- * Since: 0.10.x
- */
-typedef enum _GstBaseParseFormat {
-  GST_BASE_PARSE_FORMAT_NONE               = 0,
-  GST_BASE_PARSE_FORMAT_PASSTHROUGH        = (1 << 0),
-  GST_BASE_PARSE_FORMAT_HAS_TIME           = (1 << 1),
-} GstBaseParseFormat;
-
-/**
- * GstBaseParseSeekable:
- * @GST_BASE_PARSE_SEEK_NONE: No seeking possible.
- * @GST_BASE_PARSE_SEEK_DEFAULT: Default seeking possible using estimated bitrate.
- * @GST_BASE_PARSE_SEEK_TABLE: Additional metadata provides more accurate seeking.
- *
- * Indicates what level (of quality) of seeking is possible.
- *
- * Since: 0.10.x
- */
-typedef enum _GstBaseParseSeekable {
-  GST_BASE_PARSE_SEEK_NONE,
-  GST_BASE_PARSE_SEEK_DEFAULT,
-  GST_BASE_PARSE_SEEK_TABLE
-} GstBaseParseSeekable;
-
-typedef struct _GstBaseParse GstBaseParse;
-typedef struct _GstBaseParseClass GstBaseParseClass;
-typedef struct _GstBaseParsePrivate GstBaseParsePrivate;
-
-/**
- * GstBaseParse:
- * @element: the parent element.
- *
- * The opaque #GstBaseParse data structure.
- */
-struct _GstBaseParse {
-  GstElement     element;
-  GstAdapter    *adapter;
-
-  /*< protected >*/
-  /* source and sink pads */
-  GstPad         *sinkpad;
-  GstPad         *srcpad;
-
-  /* MT-protected (with STREAM_LOCK) */
-  GstSegment      segment;
-
-  /* Newsegment event to be sent after SEEK */
-  GstEvent       *pending_segment;
-
-  /* Segment event that closes the running segment prior to SEEK */
-  GstEvent       *close_segment;
-
-  /*< private >*/
-  gpointer       _gst_reserved[GST_PADDING_LARGE];
-  GstBaseParsePrivate *priv;
-};
-
-/**
- * GstBaseParseClass:
- * @start:          Optional.
- *                  Called when the element starts processing.
- *                  Allows opening external resources.
- * @stop:           Optional.
- *                  Called when the element stops processing.
- *                  Allows closing external resources.
- * @set_sink_caps:  allows the subclass to be notified of the actual caps set.
- * @check_valid_frame:  Check if the given piece of data contains a valid
- *                      frame.
- * @parse_frame:    Parse the already checked frame. Subclass need to
- *                  set the buffer timestamp, duration, caps and possibly
- *                  other necessary metadata. This is called with srcpad's
- *                  STREAM_LOCK held.
- * @convert:        Optional.
- *                  Convert between formats.
- * @event:          Optional.
- *                  Event handler on the sink pad. This function should return
- *                  TRUE if the event was handled and can be dropped.
- * @src_event:      Optional.
- *                  Event handler on the source pad. Should return TRUE
- *                  if the event was handled and can be dropped.
- *
- * @pre_push_frame: Optional.
- *                   Called just prior to pushing a frame (after any pending
- *                   events have been sent) to give subclass a chance to perform
- *                   additional actions at this time (e.g. tag sending) or to
- *                   decide whether this buffer should be dropped or not
- *                   (e.g. custom segment clipping).
- *
- * Subclasses can override any of the available virtual methods or not, as
- * needed. At minimum @check_valid_frame and @parse_frame needs to be
- * overridden.
- */
-struct _GstBaseParseClass {
-  GstElementClass parent_class;
-
-  /*< public >*/
-  /* virtual methods for subclasses */
-
-  gboolean      (*start)              (GstBaseParse *parse);
-
-  gboolean      (*stop)               (GstBaseParse *parse);
-
-  gboolean      (*set_sink_caps)      (GstBaseParse *parse,
-                                       GstCaps *caps);
-
-  gboolean      (*check_valid_frame)  (GstBaseParse *parse,
-                                       GstBaseParseFrame *frame,
-                                       guint *framesize,
-                                       gint *skipsize);
-
-  GstFlowReturn (*parse_frame)        (GstBaseParse *parse,
-                                       GstBaseParseFrame *frame);
-
-  GstFlowReturn (*pre_push_frame)     (GstBaseParse *parse,
-                                       GstBaseParseFrame *frame);
-
-  gboolean      (*convert)            (GstBaseParse * parse,
-                                       GstFormat src_format,
-                                       gint64 src_value,
-                                       GstFormat dest_format,
-                                       gint64 * dest_value);
-
-  gboolean      (*event)              (GstBaseParse *parse,
-                                       GstEvent *event);
-
-  gboolean      (*src_event)          (GstBaseParse *parse,
-                                       GstEvent *event);
-
-  /*< private >*/
-  gpointer       _gst_reserved[GST_PADDING_LARGE];
-};
-
-GType           gst_base_parse_get_type         (void);
-
-void            gst_base_parse_frame_init (GstBaseParse * parse,
-                                           GstBaseParseFrame * frame);
-GstFlowReturn   gst_base_parse_push_frame (GstBaseParse *parse,
-                                           GstBaseParseFrame *frame);
-
-void            gst_base_parse_set_duration (GstBaseParse *parse,
-                                             GstFormat fmt, gint64 duration,
-                                              gint interval);
-void            gst_base_parse_set_seek (GstBaseParse * parse,
-                                         GstBaseParseSeekable seek,
-                                         guint bitrate);
-void            gst_base_parse_set_min_frame_size (GstBaseParse *parse,
-                                                   guint min_size);
-void            gst_base_parse_set_format (GstBaseParse * parse,
-                                           GstBaseParseFormat flag,
-                                           gboolean on);
-void            gst_base_parse_set_frame_props (GstBaseParse * parse,
-                                                guint fps_num, guint fps_den,
-                                                guint lead_in, guint lead_out);
-
-gboolean        gst_base_parse_convert_default (GstBaseParse * parse,
-                                                GstFormat src_format, gint64 src_value,
-                                                GstFormat dest_format, gint64 * dest_value);
-
-gboolean        gst_base_parse_add_index_entry (GstBaseParse * parse,
-                                                guint64 offset, GstClockTime ts,
-                                                gboolean key, gboolean force);
-
-G_END_DECLS
-
-#endif /* __GST_BASE_PARSE_H__ */
diff --git a/tools/element-templates/baseparse b/tools/element-templates/baseparse
index ff56b3ca4..01293f68a 100644
--- a/tools/element-templates/baseparse
+++ b/tools/element-templates/baseparse
@@ -5,7 +5,7 @@ GST_TYPE_BASE_PARSE
 % pkg-config
 gstreamer-base-0.10
 % includes
-#include <gst/baseparse/gstbaseparse.h>
+#include <gst/base/gstbaseparse.h>
 % prototypes
 static gboolean gst_replace_start (GstBaseParse *parse);
 static gboolean gst_replace_stop (GstBaseParse *parse);