Remove legacyh264parse element

One h264 parser ought to be enough for anybody.

https://bugzilla.gnome.org/show_bug.cgi?id=648002

1 files changed, 0 insertions, 2743 deletions

diff --git a/gst/h264parse/gsth264parse.c b/gst/h264parse/gsth264parse.c
deleted file mode 100644
index 90a537bb7..000000000
--- a/gst/h264parse/gsth264parse.c
+++ /dev/null
@@ -1,2743 +0,0 @@
-/* GStreamer h264 parser
- * Copyright (C) 2005 Michal Benes <michal.benes@itonis.tv>
- *           (C) 2008 Wim Taymans <wim.taymans@gmail.com>
- *           (C) 2009 Mark Nauwelaerts <mnauw users sf net>
- *           (C) 2009 Nokia Corporation. All rights reserved.
- *   Contact: Stefan Kost <stefan.kost@nokia.com>
- *
- * gsth264parse.c:
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-
-#ifdef HAVE_CONFIG_H
-#  include "config.h"
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-
-#include <gst/base/gstbytewriter.h>
-
-#include "gsth264parse.h"
-
-static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
-    GST_PAD_SINK,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("video/x-h264"));
-
-static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("video/x-h264"));
-
-GST_DEBUG_CATEGORY_STATIC (h264_parse_debug);
-#define GST_CAT_DEFAULT h264_parse_debug
-
-#define DEFAULT_SPLIT_PACKETIZED     FALSE
-#define DEFAULT_ACCESS_UNIT          FALSE
-#define DEFAULT_OUTPUT_FORMAT        GST_H264_PARSE_FORMAT_INPUT
-#define DEFAULT_CONFIG_INTERVAL      (0)
-
-enum
-{
-  PROP_0,
-  PROP_SPLIT_PACKETIZED,
-  PROP_ACCESS_UNIT,
-  PROP_CONFIG_INTERVAL,
-  PROP_OUTPUT_FORMAT,
-  PROP_LAST
-};
-
-enum
-{
-  GST_H264_PARSE_FORMAT_SAMPLE = 0,
-  GST_H264_PARSE_FORMAT_BYTE,
-  GST_H264_PARSE_FORMAT_INPUT
-};
-
-#define GST_H264_PARSE_FORMAT_TYPE (gst_h264_parse_format_get_type())
-static GType
-gst_h264_parse_format_get_type (void)
-{
-  static GType format_type = 0;
-
-  static const GEnumValue format_types[] = {
-    {GST_H264_PARSE_FORMAT_SAMPLE, "AVC Sample Format", "sample"},
-    {GST_H264_PARSE_FORMAT_BYTE, "Bytestream Format", "byte"},
-    {GST_H264_PARSE_FORMAT_INPUT, "Input Format", "input"},
-    {0, NULL, NULL}
-  };
-
-  if (!format_type) {
-    format_type = g_enum_register_static ("GstH264ParseFormat", format_types);
-  }
-  return format_type;
-}
-
-typedef enum
-{
-  NAL_UNKNOWN = 0,
-  NAL_SLICE = 1,
-  NAL_SLICE_DPA = 2,
-  NAL_SLICE_DPB = 3,
-  NAL_SLICE_DPC = 4,
-  NAL_SLICE_IDR = 5,
-  NAL_SEI = 6,
-  NAL_SPS = 7,
-  NAL_PPS = 8,
-  NAL_AU_DELIMITER = 9,
-  NAL_SEQ_END = 10,
-  NAL_STREAM_END = 11,
-  NAL_FILTER_DATA = 12
-} GstNalUnitType;
-
-/* small linked list implementation to allocate the list entry and the data in
- * one go */
-struct _GstNalList
-{
-  GstNalList *next;
-
-  gint nal_type;
-  gint nal_ref_idc;
-  gint first_mb_in_slice;
-  gint slice_type;
-  gboolean slice;
-  gboolean i_frame;
-
-  GstBuffer *buffer;
-};
-
-static GstNalList *
-gst_nal_list_new (GstBuffer * buffer)
-{
-  GstNalList *new_list;
-
-  new_list = g_slice_new0 (GstNalList);
-  new_list->buffer = buffer;
-
-  return new_list;
-}
-
-static GstNalList *
-gst_nal_list_prepend_link (GstNalList * list, GstNalList * link)
-{
-  link->next = list;
-
-  return link;
-}
-
-static GstNalList *
-gst_nal_list_delete_head (GstNalList * list)
-{
-  if (list) {
-    GstNalList *old = list;
-
-    list = list->next;
-
-    g_slice_free (GstNalList, old);
-  }
-  return list;
-}
-
-/* simple bitstream parser, automatically skips over
- * emulation_prevention_three_bytes. */
-typedef struct
-{
-  const guint8 *data;
-  const guint8 *end;
-  gint head;                    /* bitpos in the cache of next bit */
-  guint64 cache;                /* cached bytes */
-} GstNalBs;
-
-static void
-gst_nal_bs_init (GstNalBs * bs, const guint8 * data, guint size)
-{
-  bs->data = data;
-  bs->end = data + size;
-  bs->head = 0;
-  /* fill with something other than 0 to detect emulation prevention bytes */
-  bs->cache = 0xffffffff;
-}
-
-static guint32
-gst_nal_bs_read (GstNalBs * bs, guint n)
-{
-  guint32 res = 0;
-  gint shift;
-
-  if (n == 0)
-    return res;
-
-  /* fill up the cache if we need to */
-  while (bs->head < n) {
-    guint8 byte;
-    gboolean check_three_byte;
-
-    check_three_byte = TRUE;
-  next_byte:
-    if (bs->data >= bs->end) {
-      /* we're at the end, can't produce more than head number of bits */
-      n = bs->head;
-      break;
-    }
-    /* get the byte, this can be an emulation_prevention_three_byte that we need
-     * to ignore. */
-    byte = *bs->data++;
-    if (check_three_byte && byte == 0x03 && ((bs->cache & 0xffff) == 0)) {
-      /* next byte goes unconditionally to the cache, even if it's 0x03 */
-      check_three_byte = FALSE;
-      goto next_byte;
-    }
-    /* shift bytes in cache, moving the head bits of the cache left */
-    bs->cache = (bs->cache << 8) | byte;
-    bs->head += 8;
-  }
-
-  /* bring the required bits down and truncate */
-  if ((shift = bs->head - n) > 0)
-    res = bs->cache >> shift;
-  else
-    res = bs->cache;
-
-  /* mask out required bits */
-  if (n < 32)
-    res &= (1 << n) - 1;
-
-  bs->head = shift;
-
-  return res;
-}
-
-static gboolean
-gst_nal_bs_eos (GstNalBs * bs)
-{
-  return (bs->data >= bs->end) && (bs->head == 0);
-}
-
-/* read unsigned Exp-Golomb code */
-static gint
-gst_nal_bs_read_ue (GstNalBs * bs)
-{
-  gint i = 0;
-
-  while (gst_nal_bs_read (bs, 1) == 0 && !gst_nal_bs_eos (bs) && i < 32)
-    i++;
-
-  return ((1 << i) - 1 + gst_nal_bs_read (bs, i));
-}
-
-/* read signed Exp-Golomb code */
-static gint
-gst_nal_bs_read_se (GstNalBs * bs)
-{
-  gint i = 0;
-
-  i = gst_nal_bs_read_ue (bs);
-  /* (-1)^(i+1) Ceil (i / 2) */
-  i = (i + 1) / 2 * (i & 1 ? 1 : -1);
-
-  return i;
-}
-
-
-/* SEI type */
-typedef enum
-{
-  SEI_BUF_PERIOD = 0,
-  SEI_PIC_TIMING = 1
-      /* and more...  */
-} GstSeiPayloadType;
-
-/* SEI pic_struct type */
-typedef enum
-{
-  SEI_PIC_STRUCT_FRAME = 0,     /* 0: %frame */
-  SEI_PIC_STRUCT_TOP_FIELD = 1, /* 1: top field */
-  SEI_PIC_STRUCT_BOTTOM_FIELD = 2,      /* 2: bottom field */
-  SEI_PIC_STRUCT_TOP_BOTTOM = 3,        /* 3: top field, bottom field, in that order */
-  SEI_PIC_STRUCT_BOTTOM_TOP = 4,        /* 4: bottom field, top field, in that order */
-  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5,    /* 5: top field, bottom field, top field repeated, in that order */
-  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, /* 6: bottom field, top field, bottom field repeated, in that order */
-  SEI_PIC_STRUCT_FRAME_DOUBLING = 7,    /* 7: %frame doubling */
-  SEI_PIC_STRUCT_FRAME_TRIPLING = 8     /* 8: %frame tripling */
-} GstSeiPicStructType;
-
-/* pic_struct to NumClockTS lookup table */
-static const guint8 sei_num_clock_ts_table[9] = {
-  1, 1, 1, 2, 2, 3, 3, 2, 3
-};
-
-#define Extended_SAR 255
-
-/* SPS: sequential parameter sets */
-struct _GstH264Sps
-{
-  guint8 profile_idc;
-  guint8 level_idc;
-
-  guint8 sps_id;
-
-  guint8 pic_order_cnt_type;
-
-  guint8 log2_max_frame_num_minus4;
-  gboolean frame_mbs_only_flag;
-  guint8 log2_max_pic_order_cnt_lsb_minus4;
-
-  gboolean frame_cropping_flag;
-
-  /* VUI parameters */
-  gboolean vui_parameters_present_flag;
-
-  gboolean timing_info_present_flag;
-  guint32 num_units_in_tick;
-  guint32 time_scale;
-  gboolean fixed_frame_rate_flag;
-
-  gboolean nal_hrd_parameters_present_flag;
-  gboolean vcl_hrd_parameters_present_flag;
-  /* hrd parameters */
-  guint8 cpb_cnt_minus1;
-  gint initial_cpb_removal_delay_length_minus1; /* initial_cpb_removal_delay_length_minus1 */
-  gint cpb_removal_delay_length_minus1; /* cpb_removal_delay_length_minus1 */
-  gint dpb_output_delay_length_minus1;  /* dpb_output_delay_length_minus1 */
-  gboolean time_offset_length_minus1;
-
-  gboolean pic_struct_present_flag;
-  /* And more...  */
-
-  /* derived values */
-  gint width, height;
-};
-/* PPS: pic parameter sets */
-struct _GstH264Pps
-{
-  guint8 pps_id;
-  guint8 sps_id;
-};
-
-static GstH264Sps *
-gst_h264_parse_get_sps (GstH264Parse * h, guint8 sps_id)
-{
-  GstH264Sps *sps;
-  g_return_val_if_fail (h != NULL, NULL);
-
-  if (sps_id >= MAX_SPS_COUNT) {
-    GST_DEBUG_OBJECT (h, "requested sps_id=%04x out of range", sps_id);
-    return NULL;
-  }
-  sps = h->sps_buffers[sps_id];
-  if (sps == NULL) {
-    GST_DEBUG_OBJECT (h, "Creating sps with sps_id=%04x", sps_id);
-    sps = h->sps_buffers[sps_id] = g_slice_new0 (GstH264Sps);
-    if (sps == NULL) {
-      GST_DEBUG_OBJECT (h, "Allocation failed!");
-    }
-  }
-
-  h->sps = h->sps_buffers[sps_id] = sps;
-  return sps;
-}
-
-static GstH264Pps *
-gst_h264_parse_get_pps (GstH264Parse * h, guint8 pps_id)
-{
-  GstH264Pps *pps;
-  g_return_val_if_fail (h != NULL, NULL);
-
-  pps = h->pps_buffers[pps_id];
-  if (pps == NULL) {
-    GST_DEBUG_OBJECT (h, "Creating pps with pps_id=%04x", pps_id);
-    pps = g_slice_new0 (GstH264Pps);
-    if (pps == NULL) {
-      GST_DEBUG_OBJECT (h, "Failed!");
-    }
-  }
-
-  h->pps = h->pps_buffers[pps_id] = pps;
-  return pps;
-}
-
-/* decode hrd parameters */
-static gboolean
-gst_vui_decode_hrd_parameters (GstH264Parse * h, GstNalBs * bs)
-{
-  GstH264Sps *sps = h->sps;
-  gint sched_sel_idx;
-
-  sps->cpb_cnt_minus1 = gst_nal_bs_read_ue (bs);
-  if (sps->cpb_cnt_minus1 > 31U) {
-    GST_ERROR_OBJECT (h, "cpb_cnt_minus1 = %d out of range",
-        sps->cpb_cnt_minus1);
-    return FALSE;
-  }
-
-  gst_nal_bs_read (bs, 4);      /* bit_rate_scale */
-  gst_nal_bs_read (bs, 4);      /* cpb_size_scale */
-
-  for (sched_sel_idx = 0; sched_sel_idx <= sps->cpb_cnt_minus1; sched_sel_idx++) {
-    gst_nal_bs_read_ue (bs);    /* bit_rate_value_minus1 */
-    gst_nal_bs_read_ue (bs);    /* cpb_size_value_minus1 */
-    gst_nal_bs_read (bs, 1);    /* cbr_flag */
-  }
-
-  sps->initial_cpb_removal_delay_length_minus1 = gst_nal_bs_read (bs, 5);
-  sps->cpb_removal_delay_length_minus1 = gst_nal_bs_read (bs, 5);
-  sps->dpb_output_delay_length_minus1 = gst_nal_bs_read (bs, 5);
-  sps->time_offset_length_minus1 = gst_nal_bs_read (bs, 5);
-
-  return TRUE;
-}
-
-/* decode vui parameters */
-static gboolean
-gst_sps_decode_vui (GstH264Parse * h, GstNalBs * bs)
-{
-  GstH264Sps *sps = h->sps;
-
-  if (gst_nal_bs_read (bs, 1)) {        /* aspect_ratio_info_present_flag */
-    if (gst_nal_bs_read (bs, 8) == Extended_SAR) {      /* aspect_ratio_idc */
-      gst_nal_bs_read (bs, 16); /* sar_width */
-      gst_nal_bs_read (bs, 16); /* sar_height */
-    }
-  }
-
-  if (gst_nal_bs_read (bs, 1)) {        /* overscan_info_present_flag */
-    gst_nal_bs_read (bs, 1);    /* overscan_appropriate_flag */
-  }
-
-  if (gst_nal_bs_read (bs, 1)) {        /* video_signal_type_present_flag */
-    gst_nal_bs_read (bs, 3);    /* video_format */
-    gst_nal_bs_read (bs, 1);    /* video_full_range_flag */
-
-    if (gst_nal_bs_read (bs, 1)) {      /* colour_description_present_flag */
-      gst_nal_bs_read (bs, 8);  /* colour_primaries */
-      gst_nal_bs_read (bs, 8);  /* transfer_characteristics */
-      gst_nal_bs_read (bs, 8);  /* matrix_coefficients */
-    }
-  }
-
-  if (gst_nal_bs_read (bs, 1)) {        /* chroma_loc_info_present_flag */
-    gst_nal_bs_read_ue (bs);    /* chroma_sample_loc_type_top_field */
-    gst_nal_bs_read_ue (bs);    /* chroma_sample_loc_type_bottom_field */
-  }
-
-  /*
-     GST_DEBUG_OBJECT (h,
-     "aspect_ratio_info_present_flag = %d, "
-     "overscan_info_present_flag = %d, "
-     "video_signal_type_present_flag = %d, "
-     "chroma_loc_info_present_flag = %d\n",
-     sps->aspect_ratio_info_present_flag, sps->overscan_info_present_flag,
-     sps->video_signal_type_present_flag, sps->chroma_loc_info_present_flag);
-   */
-
-  sps->timing_info_present_flag = gst_nal_bs_read (bs, 1);
-  if (sps->timing_info_present_flag) {
-    guint32 num_units_in_tick = gst_nal_bs_read (bs, 32);
-    guint32 time_scale = gst_nal_bs_read (bs, 32);
-
-    /* If any of these parameters = 0, discard all timing_info */
-    if (time_scale == 0) {
-      GST_WARNING_OBJECT (h,
-          "time_scale = 0 detected in stream (incompliant to H.264 E.2.1)."
-          " Discarding related info.");
-    } else if (num_units_in_tick == 0) {
-      GST_WARNING_OBJECT (h,
-          "num_units_in_tick  = 0 detected in stream (incompliant to H.264 E.2.1)."
-          " Discarding related info.");
-    } else {
-      sps->num_units_in_tick = num_units_in_tick;
-      sps->time_scale = time_scale;
-      sps->fixed_frame_rate_flag = gst_nal_bs_read (bs, 1);
-      GST_DEBUG_OBJECT (h, "timing info: dur=%d/%d fixed=%d",
-          num_units_in_tick, time_scale, sps->fixed_frame_rate_flag);
-    }
-  }
-
-  sps->nal_hrd_parameters_present_flag = gst_nal_bs_read (bs, 1);
-  if (sps->nal_hrd_parameters_present_flag) {
-    gst_vui_decode_hrd_parameters (h, bs);
-  }
-  sps->vcl_hrd_parameters_present_flag = gst_nal_bs_read (bs, 1);
-  if (sps->vcl_hrd_parameters_present_flag) {
-    gst_vui_decode_hrd_parameters (h, bs);
-  }
-  if (sps->nal_hrd_parameters_present_flag
-      || sps->vcl_hrd_parameters_present_flag) {
-    gst_nal_bs_read (bs, 1);    /* low_delay_hrd_flag */
-  }
-
-  sps->pic_struct_present_flag = gst_nal_bs_read (bs, 1);
-
-
-#if 0
-  /* Not going down anymore */
-
-  if (gst_nal_bs_read (bs, 1)) {        /* bitstream_restriction_flag */
-    gst_nal_bs_read (bs, 1);    /* motion_vectors_over_pic_boundaries_flag */
-    gst_nal_bs_read_ue (bs);    /* max_bytes_per_pic_denom */
-    gst_nal_bs_read_ue (bs);    /* max_bits_per_mb_denom */
-    gst_nal_bs_read_ue (bs);    /* log2_max_mv_length_horizontal */
-    gst_nal_bs_read_ue (bs);    /* log2_max_mv_length_vertical */
-    gst_nal_bs_read_ue (bs);    /* num_reorder_frames */
-    gst_nal_bs_read_ue (bs);    /* max_dec_frame_buffering */
-  }
-#endif
-
-  return TRUE;
-}
-
-/* decode sequential parameter sets */
-static gboolean
-gst_nal_decode_sps (GstH264Parse * h, GstNalBs * bs)
-{
-  guint8 profile_idc, level_idc;
-  guint8 sps_id;
-  GstH264Sps *sps = NULL;
-  guint subwc[] = { 1, 2, 2, 1 };
-  guint subhc[] = { 1, 2, 1, 1 };
-  guint chroma;
-  guint fc_top, fc_bottom, fc_left, fc_right;
-  gint width, height;
-
-  profile_idc = gst_nal_bs_read (bs, 8);
-  gst_nal_bs_read (bs, 1);      /* constraint_set0_flag */
-  gst_nal_bs_read (bs, 1);      /* constraint_set1_flag */
-  gst_nal_bs_read (bs, 1);      /* constraint_set2_flag */
-  gst_nal_bs_read (bs, 1);      /* constraint_set3_flag */
-  gst_nal_bs_read (bs, 4);      /* reserved */
-  level_idc = gst_nal_bs_read (bs, 8);
-
-  sps_id = gst_nal_bs_read_ue (bs);
-  sps = gst_h264_parse_get_sps (h, sps_id);
-  if (sps == NULL) {
-    return FALSE;
-  }
-  sps->profile_idc = profile_idc;
-  sps->level_idc = level_idc;
-
-  if (profile_idc == 100 || profile_idc == 110 || profile_idc == 122
-      || profile_idc == 244 || profile_idc == 44 ||
-      profile_idc == 83 || profile_idc == 86) {
-    gint scp_flag = 0;
-
-    if ((chroma = gst_nal_bs_read_ue (bs)) == 3) {      /* chroma_format_idc */
-      scp_flag = gst_nal_bs_read (bs, 1);       /* separate_colour_plane_flag */
-    }
-    gst_nal_bs_read_ue (bs);    /* bit_depth_luma_minus8 */
-    gst_nal_bs_read_ue (bs);    /* bit_depth_chroma_minus8 */
-    gst_nal_bs_read (bs, 1);    /* qpprime_y_zero_transform_bypass_flag */
-    if (gst_nal_bs_read (bs, 1)) {      /* seq_scaling_matrix_present_flag */
-      gint i, j, m, d;
-
-      m = (chroma != 3) ? 8 : 12;
-      for (i = 0; i < m; i++) {
-        /* seq_scaling_list_present_flag[i] */
-        d = gst_nal_bs_read (bs, 1);
-        if (d) {
-          gint lastScale = 8, nextScale = 8, deltaScale;
-
-          j = (i < 6) ? 16 : 64;
-          for (; j > 0; j--) {
-            if (nextScale != 0) {
-              deltaScale = gst_nal_bs_read_se (bs);
-              nextScale = (lastScale + deltaScale + 256) % 256;
-            }
-            if (nextScale != 0)
-              lastScale = nextScale;
-          }
-        }
-      }
-    }
-    if (scp_flag)
-      chroma = 0;
-  } else {
-    /* inferred value */
-    chroma = 1;
-  }
-
-  sps->log2_max_frame_num_minus4 = gst_nal_bs_read_ue (bs);     /* between 0 and 12 */
-  if (sps->log2_max_frame_num_minus4 > 12) {
-    GST_DEBUG_OBJECT (h, "log2_max_frame_num_minus4 = %d out of range"
-        " [0,12]", sps->log2_max_frame_num_minus4);
-    return FALSE;
-  }
-
-  sps->pic_order_cnt_type = gst_nal_bs_read_ue (bs);
-  if (sps->pic_order_cnt_type == 0) {
-    sps->log2_max_pic_order_cnt_lsb_minus4 = gst_nal_bs_read_ue (bs);
-  } else if (sps->pic_order_cnt_type == 1) {
-    gint d;
-
-    /* delta_pic_order_always_zero_flag */
-    gst_nal_bs_read (bs, 1);
-    /* offset_for_non_ref_pic */
-    gst_nal_bs_read_ue (bs);
-    /* offset_for_top_to_bottom_field */
-    gst_nal_bs_read_ue (bs);
-    /* num_ref_frames_in_pic_order_cnt_cycle */
-    d = gst_nal_bs_read_ue (bs);
-    for (; d > 0; d--) {
-      /* offset_for_ref_frame[i] */
-      gst_nal_bs_read_ue (bs);
-    }
-  }
-
-  gst_nal_bs_read_ue (bs);      /* max_num_ref_frames */
-  gst_nal_bs_read (bs, 1);      /* gaps_in_frame_num_value_allowed_flag */
-  width = gst_nal_bs_read_ue (bs);      /* pic_width_in_mbs_minus1 */
-  height = gst_nal_bs_read_ue (bs);     /* pic_height_in_map_units_minus1 */
-
-  sps->frame_mbs_only_flag = gst_nal_bs_read (bs, 1);
-  if (!sps->frame_mbs_only_flag) {
-    gst_nal_bs_read (bs, 1);    /* mb_adaptive_frame_field_flag */
-  }
-
-  width++;
-  width *= 16;
-  height++;
-  height *= 16 * (2 - sps->frame_mbs_only_flag);
-
-  gst_nal_bs_read (bs, 1);      /* direct_8x8_inference_flag */
-  if (gst_nal_bs_read (bs, 1)) {        /* frame_cropping_flag */
-    fc_left = gst_nal_bs_read_ue (bs);  /* frame_crop_left_offset */
-    fc_right = gst_nal_bs_read_ue (bs); /* frame_crop_right_offset */
-    fc_top = gst_nal_bs_read_ue (bs);   /* frame_crop_top_offset */
-    fc_bottom = gst_nal_bs_read_ue (bs);        /* frame_crop_bottom_offset */
-  } else
-    fc_left = fc_right = fc_top = fc_bottom = 0;
-
-  GST_DEBUG_OBJECT (h, "Decoding SPS: profile_idc = %d, "
-      "level_idc = %d, "
-      "sps_id = %d, "
-      "pic_order_cnt_type = %d, "
-      "frame_mbs_only_flag = %d\n",
-      sps->profile_idc,
-      sps->level_idc,
-      sps_id, sps->pic_order_cnt_type, sps->frame_mbs_only_flag);
-
-  /* calculate width and height */
-  GST_DEBUG_OBJECT (h, "initial width=%d, height=%d", width, height);
-  GST_DEBUG_OBJECT (h, "crop (%d,%d)(%d,%d)",
-      fc_left, fc_top, fc_right, fc_bottom);
-  if (chroma > 3) {
-    GST_DEBUG_OBJECT (h, "chroma=%d in SPS is out of range", chroma);
-    return FALSE;
-  }
-  width -= (fc_left + fc_right) * subwc[chroma];
-  height -=
-      (fc_top + fc_bottom) * subhc[chroma] * (2 - sps->frame_mbs_only_flag);
-  if (width < 0 || height < 0) {
-    GST_DEBUG_OBJECT (h, "invalid width/height in SPS");
-    return FALSE;
-  }
-  GST_DEBUG_OBJECT (h, "final width=%u, height=%u", width, height);
-  sps->width = width;
-  sps->height = height;
-
-  sps->vui_parameters_present_flag = gst_nal_bs_read (bs, 1);
-  if (sps->vui_parameters_present_flag) {
-    gst_sps_decode_vui (h, bs);
-  }
-
-  return TRUE;
-}
-
-/* decode pic parameter set */
-static gboolean
-gst_nal_decode_pps (GstH264Parse * h, GstNalBs * bs)
-{
-  gint pps_id;
-  GstH264Pps *pps = NULL;
-
-  pps_id = gst_nal_bs_read_ue (bs);
-  if (pps_id >= MAX_PPS_COUNT) {
-    GST_DEBUG_OBJECT (h, "requested pps_id=%04x out of range", pps_id);
-    return FALSE;
-  }
-
-  pps = gst_h264_parse_get_pps (h, pps_id);
-  if (pps == NULL) {
-    return FALSE;
-  }
-  h->pps = pps;
-
-  pps->sps_id = gst_nal_bs_read_ue (bs);
-
-  /* not parsing the rest for the time being */
-  return TRUE;
-}
-
-/* decode buffering periods */
-static gboolean
-gst_sei_decode_buffering_period (GstH264Parse * h, GstNalBs * bs)
-{
-  guint8 sps_id;
-  gint sched_sel_idx;
-  GstH264Sps *sps;
-
-  sps_id = gst_nal_bs_read_ue (bs);
-  sps = gst_h264_parse_get_sps (h, sps_id);
-  if (!sps)
-    return FALSE;
-
-  if (sps->nal_hrd_parameters_present_flag) {
-    for (sched_sel_idx = 0; sched_sel_idx <= sps->cpb_cnt_minus1;
-        sched_sel_idx++) {
-      h->initial_cpb_removal_delay[sched_sel_idx]
-          = gst_nal_bs_read (bs,
-          sps->initial_cpb_removal_delay_length_minus1 + 1);
-      gst_nal_bs_read (bs, sps->initial_cpb_removal_delay_length_minus1 + 1);   /* initial_cpb_removal_delay_offset */
-    }
-  }
-  if (sps->vcl_hrd_parameters_present_flag) {
-    for (sched_sel_idx = 0; sched_sel_idx <= sps->cpb_cnt_minus1;
-        sched_sel_idx++) {
-      h->initial_cpb_removal_delay[sched_sel_idx]
-          = gst_nal_bs_read (bs,
-          sps->initial_cpb_removal_delay_length_minus1 + 1);
-      gst_nal_bs_read (bs, sps->initial_cpb_removal_delay_length_minus1 + 1);   /* initial_cpb_removal_delay_offset */
-    }
-  }
-#if 0
-  h->ts_trn_nb = MPEGTIME_TO_GSTTIME (h->initial_cpb_removal_delay[0]); /* Assuming SchedSelIdx=0 */
-#endif
-  if (h->ts_trn_nb == GST_CLOCK_TIME_NONE || h->dts == GST_CLOCK_TIME_NONE)
-    h->ts_trn_nb = 0;
-  else
-    h->ts_trn_nb = h->dts;
-
-  GST_DEBUG_OBJECT (h, "h->ts_trn_nb updated: %" GST_TIME_FORMAT,
-      GST_TIME_ARGS (h->ts_trn_nb));
-
-  return 0;
-}
-
-/* decode SEI picture timing message */
-static gboolean
-gst_sei_decode_picture_timing (GstH264Parse * h, GstNalBs * bs)
-{
-  GstH264Sps *sps = h->sps;
-
-  if (sps == NULL) {
-    GST_WARNING_OBJECT (h, "h->sps=NULL; delayed decoding of picture timing "
-        "info not implemented yet");
-    return FALSE;
-  }
-
-  if (sps->nal_hrd_parameters_present_flag
-      || sps->vcl_hrd_parameters_present_flag) {
-    h->sei_cpb_removal_delay =
-        gst_nal_bs_read (bs, sps->cpb_removal_delay_length_minus1 + 1);
-    h->sei_dpb_output_delay =
-        gst_nal_bs_read (bs, sps->dpb_output_delay_length_minus1 + 1);
-  }
-  if (sps->pic_struct_present_flag) {
-    guint i, num_clock_ts;
-    h->sei_pic_struct = gst_nal_bs_read (bs, 4);
-    h->sei_ct_type = 0;
-
-    if (h->sei_pic_struct > SEI_PIC_STRUCT_FRAME_TRIPLING)
-      return FALSE;
-
-    num_clock_ts = sei_num_clock_ts_table[h->sei_pic_struct];
-
-    for (i = 0; i < num_clock_ts; i++) {
-      if (gst_nal_bs_read (bs, 1)) {    /* clock_timestamp_flag */
-        guint full_timestamp_flag;
-        h->sei_ct_type |= 1 << gst_nal_bs_read (bs, 2);
-        gst_nal_bs_read (bs, 1);        /* nuit_field_based_flag */
-        gst_nal_bs_read (bs, 5);        /* counting_type */
-        full_timestamp_flag = gst_nal_bs_read (bs, 1);
-        gst_nal_bs_read (bs, 1);        /* discontinuity_flag */
-        gst_nal_bs_read (bs, 1);        /* cnt_dropped_flag */
-        gst_nal_bs_read (bs, 8);        /* n_frames */
-        if (full_timestamp_flag) {
-          gst_nal_bs_read (bs, 6);      /* seconds_value 0..59 */
-          gst_nal_bs_read (bs, 6);      /* minutes_value 0..59 */
-          gst_nal_bs_read (bs, 5);      /* hours_value 0..23 */
-        } else {
-          if (gst_nal_bs_read (bs, 1)) {        /* seconds_flag */
-            gst_nal_bs_read (bs, 6);    /* seconds_value range 0..59 */
-            if (gst_nal_bs_read (bs, 1)) {      /* minutes_flag */
-              gst_nal_bs_read (bs, 6);  /* minutes_value 0..59 */
-              if (gst_nal_bs_read (bs, 1))      /* hours_flag */
-                gst_nal_bs_read (bs, 5);        /* hours_value 0..23 */
-            }
-          }
-        }
-        if (sps->time_offset_length_minus1 >= 0)
-          gst_nal_bs_read (bs, sps->time_offset_length_minus1 + 1);     /* time_offset */
-      }
-    }
-
-    GST_DEBUG_OBJECT (h, "ct_type:%X pic_struct:%d\n", h->sei_ct_type,
-        h->sei_pic_struct);
-  }
-  return 0;
-}
-
-/* decode supplimental enhancement information */
-static gboolean
-gst_nal_decode_sei (GstH264Parse * h, GstNalBs * bs)
-{
-  guint8 tmp;
-  GstSeiPayloadType payloadType = 0;
-  gint8 payloadSize = 0;
-
-  do {
-    tmp = gst_nal_bs_read (bs, 8);
-    payloadType += tmp;
-  } while (tmp == 255);
-  do {
-    tmp = gst_nal_bs_read (bs, 8);
-    payloadSize += tmp;
-  } while (tmp == 255);
-  GST_DEBUG_OBJECT (h,
-      "SEI message received: payloadType = %d, payloadSize = %d bytes",
-      payloadType, payloadSize);
-
-  switch (payloadType) {
-    case SEI_BUF_PERIOD:
-      if (!gst_sei_decode_buffering_period (h, bs))
-        return FALSE;
-      break;
-    case SEI_PIC_TIMING:
-      /* TODO: According to H264 D2.2 Note1, it might be the case that the
-       * picture timing SEI message is encountered before the corresponding SPS
-       * is specified. Need to hold down the message and decode it later.  */
-      if (!gst_sei_decode_picture_timing (h, bs))
-        return FALSE;
-      break;
-    default:
-      GST_DEBUG_OBJECT (h, "SEI message of payloadType = %d is recieved but not"
-          " parsed", payloadType);
-  }
-
-  return TRUE;
-}
-
-/* decode slice header */
-static gboolean
-gst_nal_decode_slice_header (GstH264Parse * h, GstNalBs * bs)
-{
-  guint8 pps_id, sps_id;
-  h->first_mb_in_slice = gst_nal_bs_read_ue (bs);
-  h->slice_type = gst_nal_bs_read_ue (bs);
-
-  pps_id = gst_nal_bs_read_ue (bs);
-  h->pps = gst_h264_parse_get_pps (h, pps_id);
-  if (!h->pps)
-    return FALSE;
-  /* FIXME: note that pps might be uninitialized */
-  sps_id = h->pps->sps_id;
-  h->sps = gst_h264_parse_get_sps (h, sps_id);
-  if (!h->sps)
-    return FALSE;
-  /* FIXME: in some streams sps/pps may not be ready before the first slice
-   * header. In this case it is not a good idea to _get_sps()/_pps() at this
-   * point
-   * TODO: scan one round beforehand for SPS/PPS before decoding slice headers?
-   * */
-
-  /* TODO: separate_color_plane_flag: from SPS, not implemented yet, assumed to
-   * be false */
-
-  h->frame_num =
-      gst_nal_bs_read (bs, h->sps->log2_max_pic_order_cnt_lsb_minus4 + 4);
-
-  if (!h->sps && !h->sps->frame_mbs_only_flag) {
-    h->field_pic_flag = gst_nal_bs_read (bs, 1);
-    if (h->field_pic_flag)
-      h->bottom_field_flag = gst_nal_bs_read (bs, 1);
-  }
-
-  /* not parsing the rest for the time being */
-  return TRUE;
-}
-
-typedef GstH264Parse GstLegacyH264Parse;
-typedef GstH264ParseClass GstLegacyH264ParseClass;
-GST_BOILERPLATE (GstLegacyH264Parse, gst_h264_parse, GstElement,
-    GST_TYPE_ELEMENT);
-
-static void gst_h264_parse_reset (GstH264Parse * h264parse);
-static void gst_h264_parse_finalize (GObject * object);
-static void gst_h264_parse_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_h264_parse_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-
-static GstFlowReturn gst_h264_parse_chain (GstPad * pad, GstBuffer * buf);
-static gboolean gst_h264_parse_sink_event (GstPad * pad, GstEvent * event);
-static gboolean gst_h264_parse_sink_setcaps (GstPad * pad, GstCaps * caps);
-
-static GstStateChangeReturn gst_h264_parse_change_state (GstElement * element,
-    GstStateChange transition);
-
-static void
-gst_h264_parse_base_init (gpointer g_class)
-{
-  GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
-
-  gst_element_class_add_pad_template (gstelement_class,
-      gst_static_pad_template_get (&srctemplate));
-  gst_element_class_add_pad_template (gstelement_class,
-      gst_static_pad_template_get (&sinktemplate));
-  gst_element_class_set_details_simple (gstelement_class, "H264Parse",
-      "Codec/Parser/Video",
-      "Parses raw h264 stream",
-      "Michal Benes <michal.benes@itonis.tv>,"
-      "Wim Taymans <wim.taymans@gmail.com>");
-
-  GST_DEBUG_CATEGORY_INIT (h264_parse_debug, "legacy h264parse", 0,
-      "legacy h264 parser");
-}
-
-static void
-gst_h264_parse_class_init (GstH264ParseClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *gstelement_class;
-
-  gobject_class = G_OBJECT_CLASS (klass);
-  gstelement_class = (GstElementClass *) klass;
-
-  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_h264_parse_finalize);
-  gobject_class->set_property = gst_h264_parse_set_property;
-  gobject_class->get_property = gst_h264_parse_get_property;
-
-  g_object_class_install_property (gobject_class, PROP_SPLIT_PACKETIZED,
-      g_param_spec_boolean ("split-packetized", "Split packetized",
-          "Split NAL units of packetized streams", DEFAULT_SPLIT_PACKETIZED,
-          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_ACCESS_UNIT,
-      g_param_spec_boolean ("access-unit", "Access Units",
-          "Output Acess Units rather than NALUs", DEFAULT_ACCESS_UNIT,
-          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_OUTPUT_FORMAT,
-      g_param_spec_enum ("output-format", "Output Format",
-          "Output Format of stream (bytestream or otherwise)",
-          GST_H264_PARSE_FORMAT_TYPE, DEFAULT_OUTPUT_FORMAT,
-          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_CONFIG_INTERVAL,
-      g_param_spec_uint ("config-interval",
-          "SPS PPS Send Interval",
-          "Send SPS and PPS Insertion Interval in seconds (sprop parameter sets "
-          "will be multiplexed in the data stream when detected.) (0 = disabled)",
-          0, 3600, DEFAULT_CONFIG_INTERVAL,
-          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
-  gstelement_class->change_state = gst_h264_parse_change_state;
-}
-
-static void
-gst_h264_parse_init (GstH264Parse * h264parse, GstH264ParseClass * g_class)
-{
-  h264parse->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
-  gst_pad_set_chain_function (h264parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_h264_parse_chain));
-  gst_pad_set_event_function (h264parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_h264_parse_sink_event));
-  gst_pad_set_setcaps_function (h264parse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_h264_parse_sink_setcaps));
-  gst_element_add_pad (GST_ELEMENT (h264parse), h264parse->sinkpad);
-
-  h264parse->srcpad = gst_pad_new_from_static_template (&srctemplate, "src");
-  gst_element_add_pad (GST_ELEMENT (h264parse), h264parse->srcpad);
-
-  h264parse->split_packetized = DEFAULT_SPLIT_PACKETIZED;
-  h264parse->adapter = gst_adapter_new ();
-
-  h264parse->merge = DEFAULT_ACCESS_UNIT;
-  h264parse->picture_adapter = gst_adapter_new ();
-
-  h264parse->interval = DEFAULT_CONFIG_INTERVAL;
-  h264parse->last_report = GST_CLOCK_TIME_NONE;
-
-  h264parse->format = GST_H264_PARSE_FORMAT_INPUT;
-
-  gst_h264_parse_reset (h264parse);
-}
-
-static void
-gst_h264_parse_reset (GstH264Parse * h264parse)
-{
-  gint i;
-  GSList *list;
-
-  for (i = 0; i < MAX_SPS_COUNT; i++) {
-    if (h264parse->sps_buffers[i])
-      g_slice_free (GstH264Sps, h264parse->sps_buffers[i]);
-    h264parse->sps_buffers[i] = NULL;
-    gst_buffer_replace (&h264parse->sps_nals[i], NULL);
-  }
-  for (i = 0; i < MAX_PPS_COUNT; i++) {
-    if (h264parse->pps_buffers[i])
-      g_slice_free (GstH264Pps, h264parse->pps_buffers[i]);
-    h264parse->pps_buffers[i] = NULL;
-    gst_buffer_replace (&h264parse->pps_nals[i], NULL);
-  }
-  h264parse->sps = NULL;
-  h264parse->pps = NULL;
-
-  h264parse->first_mb_in_slice = -1;
-  h264parse->slice_type = -1;
-  h264parse->pps_id = -1;
-  h264parse->frame_num = -1;
-  h264parse->field_pic_flag = FALSE;
-  h264parse->bottom_field_flag = FALSE;
-
-  for (i = 0; i < 32; i++)
-    h264parse->initial_cpb_removal_delay[i] = -1;
-  h264parse->sei_cpb_removal_delay = 0;
-  h264parse->sei_dpb_output_delay = 0;
-  h264parse->sei_pic_struct = -1;
-  h264parse->sei_ct_type = -1;
-
-  h264parse->dts = GST_CLOCK_TIME_NONE;
-  h264parse->ts_trn_nb = GST_CLOCK_TIME_NONE;
-  h264parse->cur_duration = 0;
-  h264parse->last_outbuf_dts = GST_CLOCK_TIME_NONE;
-
-  list = h264parse->codec_nals;
-  g_slist_foreach (list, (GFunc) gst_buffer_unref, NULL);
-  g_slist_free (h264parse->codec_nals);
-  h264parse->codec_nals = NULL;
-  h264parse->picture_start = FALSE;
-  h264parse->idr_offset = -1;
-
-  if (h264parse->pending_segment)
-    gst_event_unref (h264parse->pending_segment);
-  h264parse->pending_segment = NULL;
-
-  g_list_foreach (h264parse->pending_events, (GFunc) gst_event_unref, NULL);
-  g_list_free (h264parse->pending_events);
-  h264parse->pending_events = NULL;
-
-  gst_caps_replace (&h264parse->src_caps, NULL);
-}
-
-static void
-gst_h264_parse_finalize (GObject * object)
-{
-  GstH264Parse *h264parse;
-
-  h264parse = GST_H264PARSE (object);
-
-  gst_h264_parse_reset (h264parse);
-
-  g_object_unref (h264parse->adapter);
-  g_object_unref (h264parse->picture_adapter);
-
-  G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static void
-gst_h264_parse_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstH264Parse *parse;
-
-  parse = GST_H264PARSE (object);
-
-  switch (prop_id) {
-    case PROP_SPLIT_PACKETIZED:
-      parse->split_packetized = g_value_get_boolean (value);
-      break;
-    case PROP_ACCESS_UNIT:
-      parse->merge = g_value_get_boolean (value);
-      break;
-    case PROP_OUTPUT_FORMAT:
-      parse->format = g_value_get_enum (value);
-      break;
-    case PROP_CONFIG_INTERVAL:
-      parse->interval = g_value_get_uint (value);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static void
-gst_h264_parse_get_property (GObject * object, guint prop_id, GValue * value,
-    GParamSpec * pspec)
-{
-  GstH264Parse *parse;
-
-  parse = GST_H264PARSE (object);
-
-  switch (prop_id) {
-    case PROP_SPLIT_PACKETIZED:
-      g_value_set_boolean (value, parse->split_packetized);
-      break;
-    case PROP_ACCESS_UNIT:
-      g_value_set_boolean (value, parse->merge);
-      break;
-    case PROP_OUTPUT_FORMAT:
-      g_value_set_enum (value, parse->format);
-      break;
-    case PROP_CONFIG_INTERVAL:
-      g_value_set_uint (value, parse->interval);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-/* make a buffer consisting of a 4-byte start code following by
- * (a copy of) given nal data */
-static GstBuffer *
-gst_h264_parse_make_nal (GstH264Parse * h264parse, const guint8 * data,
-    guint len)
-{
-  GstBuffer *buf;
-
-  buf = gst_buffer_new_and_alloc (4 + len);
-  GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf), 1);
-  memcpy (GST_BUFFER_DATA (buf) + 4, data, len);
-
-  return buf;
-}
-
-/* byte together avc codec data based on collected pps and sps so far */
-static GstBuffer *
-gst_h264_parse_make_codec_data (GstH264Parse * h264parse)
-{
-  GstBuffer *buf, *nal;
-  gint i, sps_size = 0, pps_size = 0, num_sps = 0, num_pps = 0;
-  guint8 profile_idc = 0, profile_comp = 0, level_idc = 0;
-  gboolean found = FALSE;
-  guint8 *data;
-
-  /* sps_nals and pps_nals contain start code */
-
-  for (i = 0; i < MAX_SPS_COUNT; i++) {
-    if ((nal = h264parse->sps_nals[i])) {
-      num_sps++;
-      /* size bytes also count */
-      sps_size += GST_BUFFER_SIZE (nal) - 4 + 2;
-      if (GST_BUFFER_SIZE (nal) >= 8) {
-        found = TRUE;
-        profile_idc = (GST_BUFFER_DATA (nal))[5];
-        profile_comp = (GST_BUFFER_DATA (nal))[6];
-        level_idc = (GST_BUFFER_DATA (nal))[7];
-      }
-    }
-  }
-  for (i = 0; i < MAX_PPS_COUNT; i++) {
-    if ((nal = h264parse->pps_nals[i])) {
-      num_pps++;
-      /* size bytes also count */
-      pps_size += GST_BUFFER_SIZE (nal) - 4 + 2;
-    }
-  }
-
-  GST_DEBUG_OBJECT (h264parse,
-      "constructing codec_data: num_sps=%d, num_pps=%d", num_sps, num_pps);
-
-  if (!found || !num_pps)
-    return NULL;
-
-  buf = gst_buffer_new_and_alloc (5 + 1 + sps_size + 1 + pps_size);
-  data = GST_BUFFER_DATA (buf);
-
-  data[0] = 1;                  /* AVC Decoder Configuration Record ver. 1 */
-  data[1] = profile_idc;        /* profile_idc                             */
-  data[2] = profile_comp;       /* profile_compability                     */
-  data[3] = level_idc;          /* level_idc                               */
-  data[4] = 0xfc | (4 - 1);     /* nal_length_size_minus1                  */
-  data[5] = 0xe0 | num_sps;     /* number of SPSs */
-
-  data += 6;
-  for (i = 0; i < MAX_SPS_COUNT; i++) {
-    if ((nal = h264parse->sps_nals[i])) {
-      GST_WRITE_UINT16_BE (data, GST_BUFFER_SIZE (nal) - 4);
-      memcpy (data + 2, GST_BUFFER_DATA (nal) + 4, GST_BUFFER_SIZE (nal) - 4);
-      data += 2 + GST_BUFFER_SIZE (nal) - 4;
-    }
-  }
-
-  data[0] = num_pps;
-  data++;
-  for (i = 0; i < MAX_PPS_COUNT; i++) {
-    if ((nal = h264parse->pps_nals[i])) {
-      GST_WRITE_UINT16_BE (data, GST_BUFFER_SIZE (nal) - 4);
-      memcpy (data + 2, GST_BUFFER_DATA (nal) + 4, GST_BUFFER_SIZE (nal) - 4);
-      data += 2 + GST_BUFFER_SIZE (nal) - 4;
-    }
-  }
-
-  return buf;
-}
-
-static guint
-gst_h264_parse_parse_stream_format (GstH264Parse * h264parse,
-    const gchar * stream_format)
-{
-  if (strcmp (stream_format, "avc") == 0) {
-    return GST_H264_PARSE_FORMAT_SAMPLE;
-  } else if (strcmp (stream_format, "byte-stream") == 0) {
-    return GST_H264_PARSE_FORMAT_BYTE;
-  }
-  return GST_H264_PARSE_FORMAT_INPUT;   /* this means we don't know */
-}
-
-static gboolean
-gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
-{
-  GstH264Sps *sps = NULL;
-  GstCaps *src_caps = NULL;
-  GstStructure *structure;
-  gboolean modified = FALSE;
-  const gchar *stream_format, *alignment;
-
-  /* current PPS dictates which SPS to use */
-  if (h264parse->pps && h264parse->pps->sps_id < MAX_SPS_COUNT) {
-    sps = h264parse->sps_buffers[h264parse->pps->sps_id];
-  }
-  /* failing that, we'll take most recent SPS we can get */
-  if (!sps) {
-    sps = h264parse->sps;
-  }
-
-  if (G_UNLIKELY (h264parse->src_caps == NULL)) {
-    src_caps = gst_caps_copy (caps);
-    modified = TRUE;
-  } else {
-    src_caps = gst_caps_ref (h264parse->src_caps);
-  }
-  src_caps = gst_caps_make_writable (src_caps);
-
-  g_return_val_if_fail (src_caps != NULL, FALSE);
-
-  /* if some upstream metadata missing, fill in from parsed stream */
-  /* width / height */
-  if (sps && (sps->width > 0 && sps->height > 0) &&
-      (h264parse->width != sps->width || h264parse->height != sps->height)) {
-    gint width, height;
-
-    width = h264parse->width = sps->width;
-    height = h264parse->height = sps->height;
-
-    GST_DEBUG_OBJECT (h264parse, "updating caps w/h %dx%d", width, height);
-    gst_caps_set_simple (src_caps, "width", G_TYPE_INT, width,
-        "height", G_TYPE_INT, height, NULL);
-    modified = TRUE;
-  }
-
-  /* framerate */
-  if (sps && (sps->time_scale > 0 && sps->num_units_in_tick > 0) &&
-      (h264parse->fps_num != sps->time_scale ||
-          h264parse->fps_den != sps->num_units_in_tick)) {
-    gint fps_num, fps_den;
-
-    fps_num = h264parse->fps_num = sps->time_scale;
-    fps_den = h264parse->fps_den = sps->num_units_in_tick;
-
-    /* FIXME verify / also handle other cases */
-    if (sps->fixed_frame_rate_flag && sps->frame_mbs_only_flag &&
-        !sps->pic_struct_present_flag) {
-      fps_den *= 2;             /* picture is a frame = 2 fields */
-      GST_DEBUG_OBJECT (h264parse, "updating caps fps %d/%d", fps_num, fps_den);
-      gst_caps_set_simple (src_caps,
-          "framerate", GST_TYPE_FRACTION, fps_num, fps_den, NULL);
-      modified = TRUE;
-    }
-  }
-
-  structure = gst_caps_get_structure (src_caps, 0);
-
-  /* we replace the stream-format on caps if needed */
-  stream_format = gst_structure_get_string (structure, "stream-format");
-  if (stream_format) {
-    guint input_format;
-    guint output_format;
-
-    input_format = gst_h264_parse_parse_stream_format (h264parse,
-        stream_format);
-    output_format = h264parse->format;
-
-    if (output_format == GST_H264_PARSE_FORMAT_INPUT) {
-      if (h264parse->packetized) {
-        output_format = GST_H264_PARSE_FORMAT_SAMPLE;
-      } else {
-        output_format = GST_H264_PARSE_FORMAT_BYTE;
-      }
-    }
-
-    if (input_format != output_format) {
-      /* we need to replace it */
-      stream_format = NULL;
-    }
-  }
-
-  /* we need to add a new stream-format */
-  if (stream_format == NULL) {
-    gst_structure_remove_field (structure, "stream-format");
-    if (h264parse->format == GST_H264_PARSE_FORMAT_SAMPLE) {
-      stream_format = "avc";
-    } else if (h264parse->format == GST_H264_PARSE_FORMAT_BYTE) {
-      stream_format = "byte-stream";
-    } else {
-      if (h264parse->packetized) {
-        stream_format = "avc";
-      } else {
-        stream_format = "byte-stream";
-      }
-    }
-    gst_structure_set (structure, "stream-format", G_TYPE_STRING, stream_format,
-        NULL);
-    modified = TRUE;
-  }
-
-  /* set alignment field */
-  if (h264parse->merge) {
-    alignment = "au";
-  } else {
-    if (h264parse->packetized) {
-      if (h264parse->split_packetized)
-        alignment = "nal";
-      else {
-        /* if packetized input is not split,
-         * take upstream alignment if validly provided,
-         * otherwise assume au aligned ... */
-        alignment = gst_structure_get_string (structure, "alignment");
-        if (!alignment || (alignment &&
-                strcmp (alignment, "au") != 0 &&
-                strcmp (alignment, "nal") != 0)) {
-          alignment = "au";
-        }
-      }
-    } else {
-      alignment = "nal";
-    }
-  }
-  /* now only set if changed */
-  {
-    const gchar *old_alignment;
-
-    old_alignment = gst_structure_get_string (structure, "alignment");
-    if (!old_alignment || strcmp (alignment, old_alignment) != 0) {
-      gst_structure_set (structure, "alignment", G_TYPE_STRING, alignment,
-          NULL);
-      modified = TRUE;
-    }
-  }
-
-  /* transforming to non-bytestream needs to make codec-data */
-  if (h264parse->format == GST_H264_PARSE_FORMAT_SAMPLE) {
-    GstBuffer *buf;
-    const GValue *value = NULL;
-    const GstBuffer *codec_data = NULL;
-
-    value = gst_structure_get_value (structure, "codec_data");
-    if (value != NULL)
-      codec_data = gst_value_get_buffer (value);
-    buf = gst_h264_parse_make_codec_data (h264parse);
-    if (buf) {
-      if (!codec_data || GST_BUFFER_SIZE (buf) != GST_BUFFER_SIZE (codec_data)
-          || memcmp (GST_BUFFER_DATA (buf), GST_BUFFER_DATA (codec_data),
-              GST_BUFFER_SIZE (buf))) {
-        GST_DEBUG_OBJECT (h264parse, "setting new codec_data");
-        gst_caps_set_simple (src_caps, "codec_data", GST_TYPE_BUFFER, buf,
-            NULL);
-        modified = TRUE;
-      }
-      gst_buffer_unref (buf);
-    } else {
-      GST_DEBUG_OBJECT (h264parse, "no codec_data yet");
-    }
-  } else if (h264parse->format == GST_H264_PARSE_FORMAT_BYTE) {
-    /* need to remove the codec_data */
-    if (gst_structure_has_field (structure, "codec_data")) {
-      gst_structure_remove_field (structure, "codec_data");
-      modified = TRUE;
-    }
-  }
-
-  /* save as new caps, caps will be set when pushing data */
-  /* avoid replacing caps by a mere identical copy, thereby triggering
-   * negotiating (which e.g. some container might not appreciate) */
-  if (modified)
-    gst_caps_replace (&h264parse->src_caps, src_caps);
-  gst_caps_unref (src_caps);
-
-  return TRUE;
-}
-
-static gboolean
-gst_h264_parse_sink_setcaps (GstPad * pad, GstCaps * caps)
-{
-  GstH264Parse *h264parse;
-  GstStructure *str;
-  const GValue *value;
-  guint8 *data;
-  guint size, num_sps, num_pps;
-
-  h264parse = GST_H264PARSE (GST_PAD_PARENT (pad));
-
-  str = gst_caps_get_structure (caps, 0);
-
-  /* accept upstream info if provided */
-  gst_structure_get_int (str, "width", &h264parse->width);
-  gst_structure_get_int (str, "height", &h264parse->height);
-  gst_structure_get_fraction (str, "framerate", &h264parse->fps_num,
-      &h264parse->fps_den);
-
-  /* packetized video has a codec_data */
-  if ((value = gst_structure_get_value (str, "codec_data"))) {
-    GstBuffer *buffer;
-    gint profile;
-    GstNalBs bs;
-    gint i, len;
-    GSList *nlist = NULL;
-
-    GST_DEBUG_OBJECT (h264parse, "have packetized h264");
-    h264parse->packetized = TRUE;
-
-    buffer = gst_value_get_buffer (value);
-    data = GST_BUFFER_DATA (buffer);
-    size = GST_BUFFER_SIZE (buffer);
-
-    /* parse the avcC data */
-    if (size < 7)
-      goto avcc_too_small;
-    /* parse the version, this must be 1 */
-    if (data[0] != 1)
-      goto wrong_version;
-
-    /* AVCProfileIndication */
-    /* profile_compat */
-    /* AVCLevelIndication */
-    profile = (data[1] << 16) | (data[2] << 8) | data[3];
-    GST_DEBUG_OBJECT (h264parse, "profile %06x", profile);
-
-    /* 6 bits reserved | 2 bits lengthSizeMinusOne */
-    /* this is the number of bytes in front of the NAL units to mark their
-     * length */
-    h264parse->nal_length_size = (data[4] & 0x03) + 1;
-    GST_DEBUG_OBJECT (h264parse, "nal length %u", h264parse->nal_length_size);
-
-    num_sps = data[5] & 0x1f;
-    data += 6;
-    size -= 6;
-    for (i = 0; i < num_sps; i++) {
-      len = GST_READ_UINT16_BE (data);
-      if (size < len + 2)
-        goto avcc_too_small;
-      gst_nal_bs_init (&bs, data + 2 + 1, len - 1);
-      gst_nal_decode_sps (h264parse, &bs);
-      /* store for later use, e.g. insertion */
-      if (h264parse->sps) {
-        h264parse->sps_nals[h264parse->sps->sps_id] =
-            gst_h264_parse_make_nal (h264parse, data + 2, len);
-      }
-      if (h264parse->format == GST_H264_PARSE_FORMAT_BYTE)
-        nlist = g_slist_append (nlist,
-            gst_h264_parse_make_nal (h264parse, data + 2, len));
-      data += len + 2;
-      size -= len + 2;
-    }
-    num_pps = data[0];
-    data++;
-    size++;
-    for (i = 0; i < num_pps; i++) {
-      len = GST_READ_UINT16_BE (data);
-      if (size < len + 2)
-        goto avcc_too_small;
-      gst_nal_bs_init (&bs, data + 2 + 1, len - 1);
-      gst_nal_decode_pps (h264parse, &bs);
-      /* store for later use, e.g. insertion */
-      if (h264parse->pps) {
-        h264parse->pps_nals[h264parse->pps->pps_id] =
-            gst_h264_parse_make_nal (h264parse, data + 2, len);
-      }
-      if (h264parse->format == GST_H264_PARSE_FORMAT_BYTE)
-        nlist = g_slist_append (nlist,
-            gst_h264_parse_make_nal (h264parse, data + 2, len));
-      data += len + 2;
-      size -= len + 2;
-    }
-    h264parse->codec_nals = nlist;
-  } else {
-    GST_DEBUG_OBJECT (h264parse, "have bytestream h264");
-    h264parse->packetized = FALSE;
-    /* we have 4 sync bytes */
-    h264parse->nal_length_size = 4;
-  }
-
-  /* forward the caps */
-  return gst_h264_parse_update_src_caps (h264parse, caps);
-
-  /* ERRORS */
-avcc_too_small:
-  {
-    GST_ERROR_OBJECT (h264parse, "avcC size %u < 7", size);
-    return FALSE;
-  }
-wrong_version:
-  {
-    GST_ERROR_OBJECT (h264parse, "wrong avcC version");
-    return FALSE;
-  }
-}
-
-/* if forced output mode,
- * ensures that NALU @nal starts with start code or length
- * takes ownership of nal and returns buffer
- */
-static GstBuffer *
-gst_h264_parse_write_nal_prefix (GstH264Parse * h264parse, GstBuffer * nal)
-{
-  guint nal_length = h264parse->nal_length_size;
-  gint i;
-
-  g_assert (nal_length <= 4);
-
-  /* ensure proper transformation on prefix if needed */
-  if (h264parse->format == GST_H264_PARSE_FORMAT_SAMPLE) {
-    nal = gst_buffer_make_writable (nal);
-    switch (nal_length) {
-      case 1:
-        GST_WRITE_UINT8 (GST_BUFFER_DATA (nal),
-            GST_BUFFER_SIZE (nal) - nal_length);
-        break;
-      case 2:
-        GST_WRITE_UINT16_BE (GST_BUFFER_DATA (nal),
-            GST_BUFFER_SIZE (nal) - nal_length);
-        break;
-      case 3:
-        GST_WRITE_UINT24_BE (GST_BUFFER_DATA (nal),
-            GST_BUFFER_SIZE (nal) - nal_length);
-        break;
-      case 4:
-        GST_WRITE_UINT32_BE (GST_BUFFER_DATA (nal),
-            GST_BUFFER_SIZE (nal) - nal_length);
-        break;
-      default:
-        g_assert_not_reached ();
-        break;
-    }
-  } else if (h264parse->format == GST_H264_PARSE_FORMAT_BYTE) {
-    gint offset = 0;
-    guint nalu_size = 0;
-
-    if (nal_length == 4) {
-      nal = gst_buffer_make_writable (nal);
-      while (offset + 4 <= GST_BUFFER_SIZE (nal)) {
-        nalu_size = GST_READ_UINT32_BE (GST_BUFFER_DATA (nal) + offset);
-        /* input may already be in byte-stream */
-        if (nalu_size == 1)
-          break;
-        GST_WRITE_UINT32_BE (GST_BUFFER_DATA (nal) + offset, 0x01);
-        offset += nalu_size + 4;
-      }
-    } else {
-      GstAdapter *adapter = gst_adapter_new ();
-      GstBuffer *sub;
-      while (offset + nal_length <= GST_BUFFER_SIZE (nal)) {
-        nalu_size = 0;
-        for (i = 0; i < nal_length; i++)
-          nalu_size = (nalu_size << 8) | GST_BUFFER_DATA (nal)[i];
-        if (nalu_size > GST_BUFFER_SIZE (nal) - nal_length - offset) {
-          GST_WARNING_OBJECT (h264parse, "NAL size %u is larger than buffer, "
-              "reducing it to the buffer size: %u", nalu_size,
-              GST_BUFFER_SIZE (nal) - nal_length - offset);
-          nalu_size = GST_BUFFER_SIZE (nal) - nal_length - offset;
-        }
-
-        sub = gst_h264_parse_make_nal (h264parse,
-            GST_BUFFER_DATA (nal) + nal_length + offset, nalu_size);
-        gst_adapter_push (adapter, sub);
-        offset += nalu_size + nal_length;
-      }
-      sub = gst_adapter_take_buffer (adapter, gst_adapter_available (adapter));
-      gst_buffer_copy_metadata (sub, nal, GST_BUFFER_COPY_ALL);
-      gst_buffer_unref (nal);
-      nal = sub;
-      g_object_unref (adapter);
-    }
-  }
-
-  /* in any case, ensure metadata can be messed with later on */
-  nal = gst_buffer_make_metadata_writable (nal);
-
-  return nal;
-}
-
-/* sends a codec NAL downstream, decorating and transforming as needed.
- * No ownership is taken of @nal */
-static GstFlowReturn
-gst_h264_parse_push_codec_buffer (GstH264Parse * h264parse, GstBuffer * nal,
-    GstClockTime ts)
-{
-  nal = gst_buffer_copy (nal);
-  nal = gst_h264_parse_write_nal_prefix (h264parse, nal);
-
-  GST_BUFFER_TIMESTAMP (nal) = ts;
-  GST_BUFFER_DURATION (nal) = 0;
-
-  gst_buffer_set_caps (nal, h264parse->src_caps);
-
-  return gst_pad_push (h264parse->srcpad, nal);
-}
-
-/* sends buffer downstream, inserting codec_data NALUs if needed */
-static GstFlowReturn
-gst_h264_parse_push_buffer (GstH264Parse * h264parse, GstBuffer * buf)
-{
-  GstFlowReturn res = GST_FLOW_OK;
-
-  /* We can send pending events if this is the first call, since we now have
-   * caps for the srcpad */
-  if (G_UNLIKELY (h264parse->pending_segment != NULL)) {
-    gst_pad_push_event (h264parse->srcpad, h264parse->pending_segment);
-    h264parse->pending_segment = NULL;
-
-    if (G_UNLIKELY (h264parse->pending_events != NULL)) {
-      GList *l;
-
-      for (l = h264parse->pending_events; l != NULL; l = l->next)
-        gst_pad_push_event (h264parse->srcpad, GST_EVENT (l->data));
-
-      g_list_free (h264parse->pending_events);
-      h264parse->pending_events = NULL;
-    }
-  }
-
-  if (G_UNLIKELY (h264parse->width == 0 || h264parse->height == 0)) {
-    GST_DEBUG ("Delaying actual push until we are configured");
-    h264parse->gather = g_list_append (h264parse->gather, buf);
-    goto beach;
-  }
-
-  if (G_UNLIKELY (h264parse->gather)) {
-    GList *pendingbuffers = h264parse->gather;
-    GList *tmp;
-
-    GST_DEBUG ("Pushing out pending buffers");
-
-    /* Yes, we're recursively calling in... */
-    h264parse->gather = NULL;
-    for (tmp = pendingbuffers; tmp; tmp = tmp->next) {
-      res = gst_h264_parse_push_buffer (h264parse, (GstBuffer *) tmp->data);
-      if (res != GST_FLOW_OK && res != GST_FLOW_NOT_LINKED)
-        break;
-    }
-    g_list_free (pendingbuffers);
-
-    if (res != GST_FLOW_OK && res != GST_FLOW_NOT_LINKED) {
-      gst_buffer_unref (buf);
-      goto beach;
-    }
-  }
-
-  /* start of picture is good time to slip in codec_data NALUs
-   * (when outputting NALS and transforming to bytestream) */
-  if (G_UNLIKELY (h264parse->codec_nals && h264parse->picture_start)) {
-    GSList *nals = h264parse->codec_nals;
-    while (nals) {
-      GST_DEBUG_OBJECT (h264parse, "pushing codec_nal of size %d",
-          GST_BUFFER_SIZE (nals->data));
-      GST_BUFFER_TIMESTAMP (nals->data) = GST_BUFFER_TIMESTAMP (buf);
-      GST_BUFFER_DURATION (nals->data) = 0;
-
-      gst_buffer_set_caps (nals->data, h264parse->src_caps);
-      (void) gst_pad_push (h264parse->srcpad, nals->data);
-      nals = g_slist_delete_link (nals, nals);
-    }
-    h264parse->codec_nals = NULL;
-  }
-
-  /* periodic SPS/PPS sending */
-  if (h264parse->interval > 0) {
-    gint nal_type = 0;
-    guint8 *data = GST_BUFFER_DATA (buf);
-    guint nal_length = h264parse->nal_length_size;
-    guint64 diff;
-    GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buf);
-
-    /* init */
-    if (!GST_CLOCK_TIME_IS_VALID (h264parse->last_report)) {
-      h264parse->last_report = timestamp;
-    }
-
-    if (!h264parse->merge) {
-      nal_type = data[nal_length] & 0x1f;
-      GST_LOG_OBJECT (h264parse, "- nal type: %d", nal_type);
-    } else if (h264parse->idr_offset >= 0) {
-      GST_LOG_OBJECT (h264parse, "AU has IDR nal at offset %d",
-          h264parse->idr_offset);
-      nal_type = 5;
-    }
-
-    /* insert on IDR */
-    if (G_UNLIKELY (nal_type == 5)) {
-      if (timestamp > h264parse->last_report)
-        diff = timestamp - h264parse->last_report;
-      else
-        diff = 0;
-
-      GST_LOG_OBJECT (h264parse,
-          "now %" GST_TIME_FORMAT ", last SPS/PPS %" GST_TIME_FORMAT,
-          GST_TIME_ARGS (timestamp), GST_TIME_ARGS (h264parse->last_report));
-
-      GST_DEBUG_OBJECT (h264parse,
-          "interval since last SPS/PPS %" GST_TIME_FORMAT,
-          GST_TIME_ARGS (diff));
-
-      if (GST_TIME_AS_SECONDS (diff) >= h264parse->interval) {
-        gint i;
-
-        if (!h264parse->merge) {
-          /* send separate config NAL buffers */
-          GST_DEBUG_OBJECT (h264parse, "- sending SPS/PPS");
-          for (i = 0; i < MAX_SPS_COUNT; i++) {
-            if (h264parse->sps_nals[i]) {
-              GST_DEBUG_OBJECT (h264parse, "sending SPS nal");
-              gst_h264_parse_push_codec_buffer (h264parse,
-                  h264parse->sps_nals[i], timestamp);
-              h264parse->last_report = timestamp;
-            }
-          }
-          for (i = 0; i < MAX_PPS_COUNT; i++) {
-            if (h264parse->pps_nals[i]) {
-              GST_DEBUG_OBJECT (h264parse, "sending PPS nal");
-              gst_h264_parse_push_codec_buffer (h264parse,
-                  h264parse->pps_nals[i], timestamp);
-              h264parse->last_report = timestamp;
-            }
-          }
-        } else {
-          /* insert config NALs into AU */
-          GstByteWriter bw;
-          GstBuffer *codec_nal, *new_buf;
-
-          gst_byte_writer_init_with_size (&bw, GST_BUFFER_SIZE (buf), FALSE);
-          gst_byte_writer_put_data (&bw, GST_BUFFER_DATA (buf),
-              h264parse->idr_offset);
-          GST_DEBUG_OBJECT (h264parse, "- inserting SPS/PPS");
-          for (i = 0; i < MAX_SPS_COUNT; i++) {
-            if (h264parse->sps_nals[i]) {
-              GST_DEBUG_OBJECT (h264parse, "inserting SPS nal");
-              codec_nal = gst_buffer_copy (h264parse->sps_nals[i]);
-              codec_nal =
-                  gst_h264_parse_write_nal_prefix (h264parse, codec_nal);
-              gst_byte_writer_put_data (&bw, GST_BUFFER_DATA (codec_nal),
-                  GST_BUFFER_SIZE (codec_nal));
-              h264parse->last_report = timestamp;
-            }
-          }
-          for (i = 0; i < MAX_PPS_COUNT; i++) {
-            if (h264parse->pps_nals[i]) {
-              GST_DEBUG_OBJECT (h264parse, "inserting PPS nal");
-              codec_nal = gst_buffer_copy (h264parse->pps_nals[i]);
-              codec_nal =
-                  gst_h264_parse_write_nal_prefix (h264parse, codec_nal);
-              gst_byte_writer_put_data (&bw, GST_BUFFER_DATA (codec_nal),
-                  GST_BUFFER_SIZE (codec_nal));
-              h264parse->last_report = timestamp;
-            }
-          }
-          gst_byte_writer_put_data (&bw,
-              GST_BUFFER_DATA (buf) + h264parse->idr_offset,
-              GST_BUFFER_SIZE (buf) - h264parse->idr_offset);
-          /* collect result and push */
-          new_buf = gst_byte_writer_reset_and_get_buffer (&bw);
-          gst_buffer_copy_metadata (new_buf, buf, GST_BUFFER_COPY_ALL);
-          gst_buffer_unref (buf);
-          buf = new_buf;
-        }
-      }
-    }
-  }
-
-  gst_buffer_set_caps (buf, h264parse->src_caps);
-  res = gst_pad_push (h264parse->srcpad, buf);
-
-beach:
-  return res;
-}
-
-/* takes over ownership of nal and returns fresh buffer */
-static GstBuffer *
-gst_h264_parse_push_nal (GstH264Parse * h264parse, GstBuffer * nal,
-    guint8 * next_nal, gboolean * _start)
-{
-  gint nal_type;
-  guint8 *data;
-  GstBuffer *outbuf = NULL;
-  guint outsize, size, nal_length = h264parse->nal_length_size;
-  gboolean start;
-  gboolean complete;
-
-  data = GST_BUFFER_DATA (nal);
-  size = GST_BUFFER_SIZE (nal);
-
-  /* deal with 3-byte start code by normalizing to 4-byte here */
-  if (!h264parse->packetized && data[2] == 0x01) {
-    GstBuffer *tmp;
-
-    /* ouch, copy */
-    GST_DEBUG_OBJECT (h264parse, "replacing 3-byte startcode");
-    tmp = gst_buffer_new_and_alloc (1);
-    GST_BUFFER_DATA (tmp)[0] = 0;
-    gst_buffer_ref (nal);
-    tmp = gst_buffer_join (tmp, nal);
-    GST_BUFFER_TIMESTAMP (tmp) = GST_BUFFER_TIMESTAMP (nal);
-    gst_buffer_unref (nal);
-    nal = tmp;
-
-    data = GST_BUFFER_DATA (nal);
-    size = GST_BUFFER_SIZE (nal);
-  }
-
-  /* caller ensures number of bytes available */
-  g_return_val_if_fail (size >= nal_length + 1, NULL);
-
-  /* determine if AU complete */
-  nal_type = data[nal_length] & 0x1f;
-  GST_LOG_OBJECT (h264parse, "nal type: %d", nal_type);
-  h264parse->picture_start |= (nal_type == 1 || nal_type == 2 || nal_type == 5);
-  /* first_mb_in_slice == 0 considered start of frame */
-  start = h264parse->picture_start && (data[nal_length + 1] & 0x80);
-  if (G_UNLIKELY (!next_nal)) {
-    complete = TRUE;
-  } else {
-    /* consider a coded slices (IDR or not) to start a picture,
-     * (so ending the previous one) if first_mb_in_slice == 0
-     * (non-0 is part of previous one) */
-    /* NOTE this is not entirely according to Access Unit specs in 7.4.1.2.4,
-     * but in practice it works in sane cases, needs not much parsing,
-     * and also works with broken frame_num in NAL
-     * (where spec-wise would fail) */
-    nal_type = next_nal[nal_length] & 0x1f;
-    GST_LOG_OBJECT (h264parse, "next nal type: %d", nal_type);
-    complete = h264parse->picture_start && (nal_type >= 6 && nal_type <= 9);
-    complete |= h264parse->picture_start &&
-        (nal_type == 1 || nal_type == 2 || nal_type == 5) &&
-        (next_nal[nal_length + 1] & 0x80);
-  }
-
-  /* collect SPS and PPS NALUs to make up codec_data, if so needed */
-  nal_type = data[nal_length] & 0x1f;
-  if (G_UNLIKELY (nal_type == NAL_SPS)) {
-    GstNalBs bs;
-    guint id;
-
-    gst_nal_bs_init (&bs, data + nal_length + 1, size - nal_length - 1);
-    gst_nal_bs_read (&bs, 24);  /* profile_idc, profile_compatibility, level_idc */
-    id = gst_nal_bs_read_ue (&bs);
-    if (!gst_nal_bs_eos (&bs) && id < MAX_SPS_COUNT) {
-      GST_DEBUG_OBJECT (h264parse, "storing SPS id %d", id);
-      gst_buffer_replace (&h264parse->sps_nals[id], NULL);
-      h264parse->sps_nals[id] =
-          gst_h264_parse_make_nal (h264parse, data + nal_length,
-          size - nal_length);
-      gst_h264_parse_update_src_caps (h264parse, NULL);
-    }
-  } else if (G_UNLIKELY (nal_type == NAL_PPS)) {
-    GstNalBs bs;
-    guint id;
-
-    gst_nal_bs_init (&bs, data + nal_length + 1, size - nal_length - 1);
-    id = gst_nal_bs_read_ue (&bs);
-    if (!gst_nal_bs_eos (&bs) && id < MAX_PPS_COUNT) {
-      GST_DEBUG_OBJECT (h264parse, "storing PPS id %d", id);
-      gst_buffer_replace (&h264parse->pps_nals[id], NULL);
-      h264parse->pps_nals[id] =
-          gst_h264_parse_make_nal (h264parse, data + nal_length,
-          size - nal_length);
-      gst_h264_parse_update_src_caps (h264parse, NULL);
-    }
-  }
-
-  if (h264parse->merge) {
-    /* clear IDR mark state */
-    if (gst_adapter_available (h264parse->picture_adapter) == 0)
-      h264parse->idr_offset = -1;
-
-    /* proper prefix */
-    nal = gst_h264_parse_write_nal_prefix (h264parse, nal);
-
-    /* start of a picture is a good time to insert codec SPS and PPS */
-    if (G_UNLIKELY (h264parse->codec_nals && h264parse->picture_start)) {
-      while (h264parse->codec_nals) {
-        GST_DEBUG_OBJECT (h264parse, "inserting codec_nal of size %d into AU",
-            GST_BUFFER_SIZE (h264parse->codec_nals->data));
-        gst_adapter_push (h264parse->picture_adapter,
-            h264parse->codec_nals->data);
-        h264parse->codec_nals =
-            g_slist_delete_link (h264parse->codec_nals, h264parse->codec_nals);
-      }
-    }
-
-    /* mark IDR nal location for later possible config insertion */
-    if (nal_type == 5 && h264parse->idr_offset < 0)
-      h264parse->idr_offset =
-          gst_adapter_available (h264parse->picture_adapter);
-
-    /* regardless, collect this NALU */
-    gst_adapter_push (h264parse->picture_adapter, nal);
-
-    if (complete) {
-      GstClockTime ts;
-
-      h264parse->picture_start = FALSE;
-      ts = gst_adapter_prev_timestamp (h264parse->picture_adapter, NULL);
-      outsize = gst_adapter_available (h264parse->picture_adapter);
-      outbuf = gst_adapter_take_buffer (h264parse->picture_adapter, outsize);
-      outbuf = gst_buffer_make_metadata_writable (outbuf);
-      GST_BUFFER_TIMESTAMP (outbuf) = ts;
-
-      /* AU always starts a frame */
-      start = TRUE;
-    }
-  } else {
-    outbuf = gst_h264_parse_write_nal_prefix (h264parse, nal);
-  }
-
-  if (_start)
-    *_start = start;
-
-  return outbuf;
-}
-
-static void
-gst_h264_parse_clear_queues (GstH264Parse * h264parse)
-{
-  g_list_foreach (h264parse->gather, (GFunc) gst_mini_object_unref, NULL);
-  g_list_free (h264parse->gather);
-  h264parse->gather = NULL;
-  while (h264parse->decode) {
-    gst_buffer_unref (h264parse->decode->buffer);
-    h264parse->decode = gst_nal_list_delete_head (h264parse->decode);
-  }
-  h264parse->decode = NULL;
-  h264parse->decode_len = 0;
-  if (h264parse->prev) {
-    gst_buffer_unref (h264parse->prev);
-    h264parse->prev = NULL;
-  }
-  gst_adapter_clear (h264parse->adapter);
-  h264parse->have_i_frame = FALSE;
-  gst_adapter_clear (h264parse->picture_adapter);
-  h264parse->picture_start = FALSE;
-}
-
-static GstFlowReturn
-gst_h264_parse_chain_forward (GstH264Parse * h264parse, gboolean discont,
-    GstBuffer * buffer)
-{
-  GstFlowReturn res = GST_FLOW_OK;
-  const guint8 *data;
-
-  if (discont) {
-    gst_adapter_clear (h264parse->adapter);
-    h264parse->discont = TRUE;
-  }
-
-  gst_adapter_push (h264parse->adapter, buffer);
-
-  while (res == GST_FLOW_OK) {
-    gint i;
-    gint next_nalu_pos = -1;
-    gint avail;
-    gboolean delta_unit = FALSE;
-    gboolean got_frame = FALSE;
-
-    avail = gst_adapter_available (h264parse->adapter);
-    if (avail < h264parse->nal_length_size + 2)
-      break;
-    data = gst_adapter_peek (h264parse->adapter, avail);
-
-    if (!h264parse->packetized) {
-      /* Bytestream format, first 3/4 bytes are sync code */
-      /* re-sync; locate initial startcode */
-      if (G_UNLIKELY (h264parse->discont)) {
-        guint32 value;
-
-        /* check for initial 00 00 01 */
-        i = gst_adapter_masked_scan_uint32 (h264parse->adapter, 0xffffff00,
-            0x00000100, 0, 4);
-        if (i < 0) {
-          i = gst_adapter_masked_scan_uint32_peek (h264parse->adapter,
-              0x00ffffff, 0x01, 0, avail, &value);
-          if (i < 0) {
-            /* no sync code, flush and try next time */
-            gst_adapter_flush (h264parse->adapter, avail - 2);
-            break;
-          } else {
-            if (value >> 24 != 00)
-              /* so a 3 byte startcode */
-              i++;
-            gst_adapter_flush (h264parse->adapter, i);
-            avail -= i;
-            data = gst_adapter_peek (h264parse->adapter, avail);
-          }
-        }
-        GST_DEBUG_OBJECT (h264parse, "re-sync found startcode at %d", i);
-      }
-      /* Find next NALU header, might be 3 or 4 bytes */
-      for (i = 1; i < avail - 4; ++i) {
-        if (data[i + 1] == 0 && data[i + 2] == 0 && data[i + 3] == 1) {
-          if (data[i + 0] == 0)
-            next_nalu_pos = i;
-          else
-            next_nalu_pos = i + 1;
-          break;
-        }
-      }
-      /* skip sync */
-      if (data[2] == 0x1) {
-        data += 3;
-        avail -= 3;
-      } else {
-        data += 4;
-        avail -= 4;
-      }
-    } else {
-      guint32 nalu_size;
-
-      nalu_size = 0;
-      for (i = 0; i < h264parse->nal_length_size; i++)
-        nalu_size = (nalu_size << 8) | data[i];
-
-      GST_LOG_OBJECT (h264parse, "got NALU size %u", nalu_size);
-
-      /* check for invalid NALU sizes, assume the size if the available bytes
-       * when something is fishy */
-      if (nalu_size <= 1 || nalu_size + h264parse->nal_length_size > avail) {
-        nalu_size = avail - h264parse->nal_length_size;
-        GST_DEBUG_OBJECT (h264parse, "fixing invalid NALU size to %u",
-            nalu_size);
-      }
-
-      /* Packetized format, see if we have to split it, usually splitting is not
-       * a good idea as decoders have no way of handling it. */
-      if (h264parse->split_packetized) {
-        if (nalu_size + h264parse->nal_length_size <= avail)
-          next_nalu_pos = nalu_size + h264parse->nal_length_size;
-      } else {
-        next_nalu_pos = avail;
-      }
-      /* skip nalu_size bytes */
-      data += h264parse->nal_length_size;
-      avail -= h264parse->nal_length_size;
-    }
-
-    /* Figure out if this is a delta unit */
-    {
-      GstNalUnitType nal_type;
-      gint nal_ref_idc;
-      GstNalBs bs;
-
-      nal_type = (data[0] & 0x1f);
-      nal_ref_idc = (data[0] & 0x60) >> 5;
-
-      GST_DEBUG_OBJECT (h264parse, "NAL type: %d, ref_idc: %d", nal_type,
-          nal_ref_idc);
-
-      gst_nal_bs_init (&bs, data + 1, avail - 1);
-
-      /* first parse some things needed to get to the frame type */
-      switch (nal_type) {
-        case NAL_SLICE:
-        case NAL_SLICE_DPA:
-        case NAL_SLICE_DPB:
-        case NAL_SLICE_DPC:
-        case NAL_SLICE_IDR:
-        {
-          gint first_mb_in_slice, slice_type;
-
-          gst_nal_decode_slice_header (h264parse, &bs);
-          first_mb_in_slice = h264parse->first_mb_in_slice;
-          slice_type = h264parse->slice_type;
-
-          GST_DEBUG_OBJECT (h264parse, "first MB: %d, slice type: %d",
-              first_mb_in_slice, slice_type);
-
-          switch (slice_type) {
-            case 0:
-            case 5:
-            case 3:
-            case 8:            /* SP */
-              /* P frames */
-              GST_DEBUG_OBJECT (h264parse, "we have a P slice");
-              delta_unit = TRUE;
-              break;
-            case 1:
-            case 6:
-              /* B frames */
-              GST_DEBUG_OBJECT (h264parse, "we have a B slice");
-              delta_unit = TRUE;
-              break;
-            case 2:
-            case 7:
-            case 4:
-            case 9:
-              /* I frames */
-              GST_DEBUG_OBJECT (h264parse, "we have an I slice");
-              got_frame = TRUE;
-              break;
-          }
-          break;
-
-        }
-        case NAL_SEI:
-          GST_DEBUG_OBJECT (h264parse, "we have an SEI NAL");
-          gst_nal_decode_sei (h264parse, &bs);
-          break;
-        case NAL_SPS:
-          GST_DEBUG_OBJECT (h264parse, "we have an SPS NAL");
-          gst_nal_decode_sps (h264parse, &bs);
-          break;
-        case NAL_PPS:
-          GST_DEBUG_OBJECT (h264parse, "we have a PPS NAL");
-          gst_nal_decode_pps (h264parse, &bs);
-          break;
-        case NAL_AU_DELIMITER:
-          GST_DEBUG_OBJECT (h264parse, "we have an access unit delimiter.");
-          break;
-        default:
-          GST_DEBUG_OBJECT (h264parse,
-              "NAL of nal_type = %d encountered but not parsed", nal_type);
-      }
-    }
-
-    /* we have a packet */
-    if (next_nalu_pos > 0) {
-      GstBuffer *outbuf;
-      GstClockTime outbuf_dts = GST_CLOCK_TIME_NONE;
-      gboolean start;
-      guint8 *next_data;
-
-      outbuf_dts = gst_adapter_prev_timestamp (h264parse->adapter, NULL);       /* Better value for the second parameter? */
-      outbuf = gst_adapter_take_buffer (h264parse->adapter, next_nalu_pos);
-
-      /* packetized will have no next data, which serves fine here */
-      next_data = (guint8 *) gst_adapter_peek (h264parse->adapter, 6);
-      outbuf = gst_h264_parse_push_nal (h264parse, outbuf, next_data, &start);
-      if (!outbuf) {
-        /* no complete unit yet, go for next round */
-        continue;
-      }
-
-      /* Ignore upstream dts that stalls or goes backward. Upstream elements
-       * like filesrc would keep on writing timestamp=0.  XXX: is this correct?
-       * TODO: better way to detect whether upstream timstamps are useful */
-      if (h264parse->last_outbuf_dts != GST_CLOCK_TIME_NONE
-          && outbuf_dts != GST_CLOCK_TIME_NONE
-          && outbuf_dts <= h264parse->last_outbuf_dts)
-        outbuf_dts = GST_CLOCK_TIME_NONE;
-
-      if ((got_frame || delta_unit) && start) {
-        GstH264Sps *sps = h264parse->sps;
-        gint duration = 1;
-
-        if (!sps) {
-          GST_DEBUG_OBJECT (h264parse, "referred SPS invalid");
-          goto TIMESTAMP_FINISH;
-        } else if (!sps->timing_info_present_flag) {
-          GST_DEBUG_OBJECT (h264parse,
-              "unable to compute timestamp: timing info not present");
-          goto TIMESTAMP_FINISH;
-        } else if (sps->time_scale == 0) {
-          GST_DEBUG_OBJECT (h264parse,
-              "unable to compute timestamp: time_scale = 0 "
-              "(this is forbidden in spec; bitstream probably contains error)");
-          goto TIMESTAMP_FINISH;
-        }
-
-        if (sps->pic_struct_present_flag
-            && h264parse->sei_pic_struct != (guint8) - 1) {
-          /* Note that when h264parse->sei_pic_struct == -1 (unspecified), there
-           * are ways to infer its value. This is related to computing the
-           * TopFieldOrderCnt and BottomFieldOrderCnt, which looks
-           * complicated and thus not implemented for the time being. Yet
-           * the value we have here is correct for many applications
-           */
-          switch (h264parse->sei_pic_struct) {
-            case SEI_PIC_STRUCT_TOP_FIELD:
-            case SEI_PIC_STRUCT_BOTTOM_FIELD:
-              duration = 1;
-              break;
-            case SEI_PIC_STRUCT_FRAME:
-            case SEI_PIC_STRUCT_TOP_BOTTOM:
-            case SEI_PIC_STRUCT_BOTTOM_TOP:
-              duration = 2;
-              break;
-            case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
-            case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
-              duration = 3;
-              break;
-            case SEI_PIC_STRUCT_FRAME_DOUBLING:
-              duration = 4;
-              break;
-            case SEI_PIC_STRUCT_FRAME_TRIPLING:
-              duration = 6;
-              break;
-            default:
-              GST_DEBUG_OBJECT (h264parse,
-                  "h264parse->sei_pic_struct of unknown value %d. Not parsed",
-                  h264parse->sei_pic_struct);
-          }
-        } else {
-          duration = h264parse->field_pic_flag ? 1 : 2;
-        }
-
-        /*
-         * h264parse.264 C.1.2 Timing of coded picture removal (equivalent to DTS):
-         * Tr,n(0) = initial_cpb_removal_delay[ SchedSelIdx ] / 90000
-         * Tr,n(n) = Tr,n(nb) + Tc * cpb_removal_delay(n)
-         * where
-         * Tc = num_units_in_tick / time_scale
-         */
-
-        if (h264parse->ts_trn_nb != GST_CLOCK_TIME_NONE) {
-          /* buffering period is present */
-          if (outbuf_dts != GST_CLOCK_TIME_NONE) {
-            /* If upstream timestamp is valid, we respect it and adjust current
-             * reference point */
-            h264parse->ts_trn_nb = outbuf_dts -
-                (GstClockTime) gst_util_uint64_scale_int
-                (h264parse->sei_cpb_removal_delay * GST_SECOND,
-                sps->num_units_in_tick, sps->time_scale);
-          } else {
-            /* If no upstream timestamp is given, we write in new timestamp */
-            h264parse->dts = h264parse->ts_trn_nb +
-                (GstClockTime) gst_util_uint64_scale_int
-                (h264parse->sei_cpb_removal_delay * GST_SECOND,
-                sps->num_units_in_tick, sps->time_scale);
-          }
-        } else {
-          /* naive method: no removal delay specified, use best guess (add prev
-           * frame duration) */
-          if (outbuf_dts != GST_CLOCK_TIME_NONE)
-            h264parse->dts = outbuf_dts;
-          else if (h264parse->dts != GST_CLOCK_TIME_NONE)
-            h264parse->dts += (GstClockTime)
-                gst_util_uint64_scale_int (h264parse->cur_duration * GST_SECOND,
-                sps->num_units_in_tick, sps->time_scale);
-          else
-            h264parse->dts = 0; /* initialization */
-
-          /* TODO: better approach: construct a buffer queue and put all these
-           * NALs into the buffer. Wait until we are able to get any valid dts
-           * or such like, and dump the buffer and estimate the timestamps of
-           * the NALs by their duration.
-           */
-        }
-
-        h264parse->cur_duration = duration;
-        h264parse->frame_cnt += 1;
-        if (outbuf_dts != GST_CLOCK_TIME_NONE)
-          h264parse->last_outbuf_dts = outbuf_dts;
-      }
-
-      if (outbuf_dts == GST_CLOCK_TIME_NONE)
-        outbuf_dts = h264parse->dts;
-      else
-        h264parse->dts = outbuf_dts;
-
-    TIMESTAMP_FINISH:
-      GST_BUFFER_TIMESTAMP (outbuf) = outbuf_dts;
-
-      GST_DEBUG_OBJECT (h264parse,
-          "pushing buffer %p, size %u, ts %" GST_TIME_FORMAT, outbuf,
-          next_nalu_pos, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
-
-      if (h264parse->discont) {
-        GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
-        h264parse->discont = FALSE;
-      }
-
-      if (delta_unit)
-        GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
-      else
-        GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
-
-      res = gst_h264_parse_push_buffer (h264parse, outbuf);
-    } else {
-      /* NALU can not be parsed yet, we wait for more data in the adapter. */
-      break;
-    }
-  }
-  return res;
-}
-
-static GstFlowReturn
-gst_h264_parse_flush_decode (GstH264Parse * h264parse)
-{
-  GstFlowReturn res = GST_FLOW_OK;
-  gboolean first = TRUE;
-
-  while (h264parse->decode) {
-    GstNalList *link;
-    GstBuffer *buf;
-
-    link = h264parse->decode;
-    buf = link->buffer;
-
-    h264parse->decode = gst_nal_list_delete_head (h264parse->decode);
-    h264parse->decode_len--;
-
-    GST_DEBUG_OBJECT (h264parse, "have type: %d, I frame: %d", link->nal_type,
-        link->i_frame);
-
-    buf = gst_h264_parse_push_nal (h264parse, buf,
-        h264parse->decode ? GST_BUFFER_DATA (h264parse->decode->buffer) : NULL,
-        NULL);
-    if (!buf)
-      continue;
-
-    if (first) {
-      /* first buffer has discont */
-      GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
-      first = FALSE;
-    } else {
-      /* next buffers are not discont */
-      GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
-    }
-
-    if (link->i_frame)
-      GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
-    else
-      GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
-
-    GST_DEBUG_OBJECT (h264parse, "pushing buffer %p, ts %" GST_TIME_FORMAT,
-        buf, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
-
-    gst_buffer_set_caps (buf, h264parse->src_caps);
-    res = gst_pad_push (h264parse->srcpad, buf);
-
-  }
-  /* the i frame is gone now */
-  h264parse->have_i_frame = FALSE;
-
-  return res;
-}
-
-/* check that the decode queue contains a valid sync code that should be pushed
- * out before adding @buffer to the decode queue */
-static GstFlowReturn
-gst_h264_parse_queue_buffer (GstH264Parse * parse, GstBuffer * buffer)
-{
-  guint8 *data;
-  guint size;
-  guint32 nalu_size;
-  GstNalBs bs;
-  GstNalList *link;
-  GstFlowReturn res = GST_FLOW_OK;
-  GstClockTime timestamp;
-
-  /* create new NALU link */
-  link = gst_nal_list_new (buffer);
-
-  /* first parse the buffer */
-  data = GST_BUFFER_DATA (buffer);
-  size = GST_BUFFER_SIZE (buffer);
-  timestamp = GST_BUFFER_TIMESTAMP (buffer);
-
-  link->slice = FALSE;
-  link->i_frame = FALSE;
-
-  GST_DEBUG_OBJECT (parse,
-      "analyse buffer of size %u, timestamp %" GST_TIME_FORMAT, size,
-      GST_TIME_ARGS (timestamp));
-
-  /* now parse all the NAL units in this buffer, for bytestream we only have one
-   * NAL unit but for packetized streams we can have multiple ones */
-  while (size >= parse->nal_length_size + 1) {
-    gint i;
-
-    nalu_size = 0;
-    if (parse->packetized) {
-      for (i = 0; i < parse->nal_length_size; i++)
-        nalu_size = (nalu_size << 8) | data[i];
-    }
-
-    /* skip nalu_size or sync bytes */
-    data += parse->nal_length_size;
-    size -= parse->nal_length_size;
-
-    link->nal_ref_idc = (data[0] & 0x60) >> 5;
-    link->nal_type = (data[0] & 0x1f);
-
-    /* nalu_size is 0 for bytestream, we have a complete packet */
-    GST_DEBUG_OBJECT (parse, "size: %u, NAL type: %d, ref_idc: %d",
-        nalu_size, link->nal_type, link->nal_ref_idc);
-
-    /* first parse some things needed to get to the frame type */
-    if (link->nal_type >= NAL_SLICE && link->nal_type <= NAL_SLICE_IDR) {
-      gst_nal_bs_init (&bs, data + 1, size - 1);
-
-      link->first_mb_in_slice = gst_nal_bs_read_ue (&bs);
-      link->slice_type = gst_nal_bs_read_ue (&bs);
-      link->slice = TRUE;
-
-      GST_DEBUG_OBJECT (parse, "first MB: %d, slice type: %d",
-          link->first_mb_in_slice, link->slice_type);
-
-      switch (link->slice_type) {
-        case 0:
-        case 5:
-        case 3:
-        case 8:                /* SP */
-          /* P frames */
-          GST_DEBUG_OBJECT (parse, "we have a P slice");
-          break;
-        case 1:
-        case 6:
-          /* B frames */
-          GST_DEBUG_OBJECT (parse, "we have a B slice");
-          break;
-        case 2:
-        case 7:
-        case 4:
-        case 9:
-          /* I frames */
-          GST_DEBUG_OBJECT (parse, "we have an I slice");
-          link->i_frame = TRUE;
-          break;
-      }
-    }
-    /* bytestream, we can exit now */
-    if (!parse->packetized)
-      break;
-
-    /* packetized format, continue parsing all packets, skip size, we already
-     * skipped the nal_length_size bytes */
-    data += nalu_size;
-    size -= nalu_size;
-  }
-
-  /* we have an I frame in the queue, this new NAL unit is a slice but not
-   * an I frame, output the decode queue */
-  GST_DEBUG_OBJECT (parse, "have_I_frame: %d, I_frame: %d, slice: %d",
-      parse->have_i_frame, link->i_frame, link->slice);
-  if (parse->have_i_frame && !link->i_frame && link->slice) {
-    GST_DEBUG_OBJECT (parse, "flushing decode queue");
-    res = gst_h264_parse_flush_decode (parse);
-  }
-  if (link->i_frame)
-    /* we're going to add a new I-frame in the queue */
-    parse->have_i_frame = TRUE;
-
-  parse->decode = gst_nal_list_prepend_link (parse->decode, link);
-  parse->decode_len++;
-  GST_DEBUG_OBJECT (parse,
-      "copied %d bytes of NAL to decode queue. queue size %d", size,
-      parse->decode_len);
-
-  return res;
-}
-
-static guint
-gst_h264_parse_find_start_reverse (GstH264Parse * parse, guint8 * data,
-    guint size, guint32 * code)
-{
-  guint32 search = *code;
-
-  while (size > 0) {
-    /* the sync code is kept in reverse */
-    search = (search << 8) | (data[size - 1]);
-    if (search == 0x01000000)
-      break;
-
-    size--;
-  }
-  *code = search;
-
-  return size - 1;
-}
-
-static GstFlowReturn
-gst_h264_parse_chain_reverse (GstH264Parse * h264parse, gboolean discont,
-    GstBuffer * buffer)
-{
-  GstFlowReturn res = GST_FLOW_OK;
-  GstBuffer *gbuf = NULL;
-
-  /* if we have a discont, move buffers to the decode list */
-  if (G_UNLIKELY (discont)) {
-    guint start, last;
-    guint32 code;
-    GstBuffer *prev;
-    GstClockTime timestamp;
-
-    GST_DEBUG_OBJECT (h264parse,
-        "received discont, copy gathered buffers for decoding");
-
-    /* init start code accumulator */
-    prev = h264parse->prev;
-    h264parse->prev = NULL;
-
-    while (h264parse->gather) {
-      guint8 *data;
-
-      /* get new buffer and init the start code search to the end position */
-      if (gbuf != NULL)
-        gst_buffer_unref (gbuf);
-      gbuf = GST_BUFFER_CAST (h264parse->gather->data);
-
-      /* remove from the gather list, they are in reverse order */
-      h264parse->gather =
-          g_list_delete_link (h264parse->gather, h264parse->gather);
-
-      if (h264parse->packetized) {
-        /* packetized the packets are already split, we can just parse and 
-         * store them */
-        GST_DEBUG_OBJECT (h264parse, "copied packetized buffer");
-        res = gst_h264_parse_queue_buffer (h264parse, gbuf);
-        gbuf = NULL;
-      } else {
-        /* bytestream, we have to split the NALUs on the sync markers */
-        code = 0xffffffff;
-        if (prev) {
-          /* if we have a previous buffer or a leftover, merge them together
-           * now */
-          GST_DEBUG_OBJECT (h264parse, "merging previous buffer");
-          gbuf = gst_buffer_join (gbuf, prev);
-          prev = NULL;
-        }
-
-        last = GST_BUFFER_SIZE (gbuf);
-        data = GST_BUFFER_DATA (gbuf);
-        timestamp = GST_BUFFER_TIMESTAMP (gbuf);
-
-        GST_DEBUG_OBJECT (h264parse,
-            "buffer size: %u, timestamp %" GST_TIME_FORMAT, last,
-            GST_TIME_ARGS (timestamp));
-
-        while (last > 0) {
-          GST_DEBUG_OBJECT (h264parse, "scan from %u", last);
-          /* find a start code searching backwards in this buffer */
-          start =
-              gst_h264_parse_find_start_reverse (h264parse, data, last, &code);
-          if (start != -1) {
-            GstBuffer *decode;
-
-            GST_DEBUG_OBJECT (h264parse, "found start code at %u", start);
-
-            /* we found a start code, copy everything starting from it to the
-             * decode queue. */
-            decode = gst_buffer_create_sub (gbuf, start, last - start);
-
-            GST_BUFFER_TIMESTAMP (decode) = timestamp;
-
-            /* see what we have here */
-            res = gst_h264_parse_queue_buffer (h264parse, decode);
-
-            last = start;
-          } else {
-            /* no start code found, keep the buffer and merge with potential next
-             * buffer. */
-            GST_DEBUG_OBJECT (h264parse, "no start code, keeping buffer to %u",
-                last);
-            prev = gst_buffer_create_sub (gbuf, 0, last);
-            gst_buffer_unref (gbuf);
-            gbuf = NULL;
-            break;
-          }
-        }
-      }
-    }
-    if (prev) {
-      GST_DEBUG_OBJECT (h264parse, "keeping buffer");
-      h264parse->prev = prev;
-    }
-  }
-  if (buffer) {
-    /* add buffer to gather queue */
-    GST_DEBUG_OBJECT (h264parse, "gathering buffer %p, size %u", buffer,
-        GST_BUFFER_SIZE (buffer));
-    h264parse->gather = g_list_prepend (h264parse->gather, buffer);
-  }
-
-  if (gbuf) {
-    gst_buffer_unref (gbuf);
-    gbuf = NULL;
-  }
-
-  return res;
-}
-
-static GstFlowReturn
-gst_h264_parse_chain (GstPad * pad, GstBuffer * buffer)
-{
-  GstFlowReturn res;
-  GstH264Parse *h264parse;
-  gboolean discont;
-  GstCaps *caps;
-
-  h264parse = GST_H264PARSE (GST_PAD_PARENT (pad));
-
-  if (!h264parse->src_caps) {
-    /* Set default caps if the sink caps were not negotiated, this is when we
-     * are reading from a file or so */
-    caps = gst_caps_new_simple ("video/x-h264", NULL);
-
-    /* we assume the bytestream format. If the data turns out to be packetized,
-     * we have a problem because we don't know the length of the nalu_size
-     * indicator. Packetized input MUST set the codec_data. */
-    h264parse->packetized = FALSE;
-    h264parse->nal_length_size = 4;
-
-    h264parse->src_caps = caps;
-  }
-
-  discont = GST_BUFFER_IS_DISCONT (buffer);
-
-  GST_DEBUG_OBJECT (h264parse, "received buffer of size %u",
-      GST_BUFFER_SIZE (buffer));
-
-  if (h264parse->segment.rate > 0.0)
-    res = gst_h264_parse_chain_forward (h264parse, discont, buffer);
-  else
-    res = gst_h264_parse_chain_reverse (h264parse, discont, buffer);
-
-  return res;
-}
-
-static gboolean
-gst_h264_parse_sink_event (GstPad * pad, GstEvent * event)
-{
-  GstH264Parse *h264parse;
-  gboolean res;
-
-  h264parse = GST_H264PARSE (gst_pad_get_parent (pad));
-
-  switch (GST_EVENT_TYPE (event)) {
-    case GST_EVENT_FLUSH_STOP:
-      GST_DEBUG_OBJECT (h264parse, "received FLUSH stop");
-      gst_segment_init (&h264parse->segment, GST_FORMAT_UNDEFINED);
-      gst_h264_parse_clear_queues (h264parse);
-      h264parse->last_outbuf_dts = GST_CLOCK_TIME_NONE;
-      res = gst_pad_push_event (h264parse->srcpad, event);
-      break;
-    case GST_EVENT_EOS:
-      GST_DEBUG_OBJECT (h264parse, "received EOS");
-      if (h264parse->pending_segment) {
-        /* Send pending newsegment before EOS */
-        gst_pad_push_event (h264parse->srcpad, h264parse->pending_segment);
-        h264parse->pending_segment = NULL;
-      }
-      if (h264parse->segment.rate < 0.0) {
-        gst_h264_parse_chain_reverse (h264parse, TRUE, NULL);
-        gst_h264_parse_flush_decode (h264parse);
-      }
-      res = gst_pad_push_event (h264parse->srcpad, event);
-      break;
-    case GST_EVENT_NEWSEGMENT:
-    {
-      gdouble rate, applied_rate;
-      GstFormat format;
-      gint64 start, stop, pos;
-      gboolean update;
-      GstEvent **ev;
-
-      gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
-          &format, &start, &stop, &pos);
-
-      /* now configure the values */
-      gst_segment_set_newsegment_full (&h264parse->segment, update,
-          rate, applied_rate, format, start, stop, pos);
-
-      GST_DEBUG_OBJECT (h264parse,
-          "Keeping newseg rate %g, applied rate %g, format %d, start %"
-          G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT ", pos %" G_GINT64_FORMAT,
-          rate, applied_rate, format, start, stop, pos);
-
-      ev = &h264parse->pending_segment;
-      gst_event_replace (ev, event);
-      gst_event_unref (event);
-      res = TRUE;
-      break;
-    }
-    case GST_EVENT_FLUSH_START:
-    {
-      res = gst_pad_push_event (h264parse->srcpad, event);
-      break;
-    }
-    default:
-    {
-      if (G_UNLIKELY (h264parse->src_caps == NULL ||
-              h264parse->pending_segment)) {
-        /* We don't yet have enough data to set caps on the srcpad, so collect
-         * non-critical events till we do */
-        h264parse->pending_events = g_list_append (h264parse->pending_events,
-            event);
-        res = TRUE;
-      } else
-        res = gst_pad_push_event (h264parse->srcpad, event);
-
-      break;
-    }
-  }
-  gst_object_unref (h264parse);
-
-  return res;
-}
-
-static GstStateChangeReturn
-gst_h264_parse_change_state (GstElement * element, GstStateChange transition)
-{
-  GstH264Parse *h264parse;
-  GstStateChangeReturn ret;
-
-  h264parse = GST_H264PARSE (element);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_READY_TO_PAUSED:
-      gst_segment_init (&h264parse->segment, GST_FORMAT_UNDEFINED);
-      break;
-    default:
-      break;
-  }
-
-  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_PAUSED_TO_READY:
-      gst_h264_parse_clear_queues (h264parse);
-      gst_h264_parse_reset (h264parse);
-      break;
-    default:
-      break;
-  }
-
-  return ret;
-}
-
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
-  return gst_element_register (plugin, "legacyh264parse",
-      GST_RANK_NONE, GST_TYPE_H264PARSE);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
-    GST_VERSION_MINOR,
-    "h264parse",
-    "Element parsing raw h264 streams",
-    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)