debian/patches/0001-mtk-upgrade-gst-bad-to-1-14-4.patch

From 41476a48b06f2b2285659844e88f3e7ffa71b1ec Mon Sep 17 00:00:00 2001
From: Yuan Fang <yuan.fang@mediatek.com>
Date: Wed, 14 Aug 2019 16:18:17 +0800
Subject: [PATCH] upgrade-gst-bad-to-1-14-4

---
 ext/resindvd/gstmpegdemux.c           |  17 ++++
 gst-libs/gst/wayland/Makefile.am      |   3 +
 gst-libs/gst/wayland/Makefile.in      |  58 ++++++++---
 gst/adpcmdec/adpcmdec.c               |   4 +
 gst/ivfparse/gstivfparse.c            |   3 +-
 gst/jpegformat/gstjpegformat.c        |   2 +-
 gst/jpegformat/gstjpegparse.c         |   2 +-
 gst/mpegtsdemux/tsdemux.c             | 178 ++++++++++++++++++++++++++++++++++
 gst/videoparsers/gsth264parse.c       |  26 +++--
 gst/videoparsers/gsth264parse.h       |   1 +
 gst/videoparsers/gsth265parse.c       |   8 +-
 gst/videoparsers/gsth265parse.h       |   1 +
 gst/videoparsers/gstmpeg4videoparse.c |   9 +-
 gst/videoparsers/gstmpeg4videoparse.h |   1 +
 gst/videoparsers/gstmpegvideoparse.c  |  91 ++++++++++++++---
 15 files changed, 361 insertions(+), 43 deletions(-)

diff --git a/ext/resindvd/gstmpegdemux.c b/ext/resindvd/gstmpegdemux.c
index a35a6a4..562f3bb 100644
--- a/ext/resindvd/gstmpegdemux.c
+++ b/ext/resindvd/gstmpegdemux.c
@@ -1932,6 +1932,23 @@ gst_flups_demux_data_cb (GstPESFilter * filter, gboolean first,
       }
       if (stream_type == -1)
         goto unknown_stream_type;
+	  } else if (stream_type == ST_GST_VIDEO_MPEG1_OR_2) {
+        if (datalen >= 4) {
+          if (!memcmp("\x00\x00\x01\xB0", map.data, 4)) {
+            stream_type = ST_VIDEO_MPEG4;
+          }
+        }
+        if (datalen >= 5) {
+          if (!memcmp("\x00\x00\x01\x00\x00", map.data, 5)) {
+            stream_type = ST_VIDEO_MPEG4;
+          }
+        }
+    } else if (stream_type == ST_AUDIO_MPEG1) {
+        if (datalen >= 4) {
+          if (!memcmp("\xFF\xF1\x50\x80", map.data, 4)) {
+            stream_type = ST_AUDIO_AAC_ADTS;
+          }
+        }
     }
     if (filter->pts != -1) {
       demux->next_pts = filter->pts + demux->scr_adjust;
diff --git a/gst-libs/gst/wayland/Makefile.am b/gst-libs/gst/wayland/Makefile.am
index 743a489..d2e4f6e 100644
--- a/gst-libs/gst/wayland/Makefile.am
+++ b/gst-libs/gst/wayland/Makefile.am
@@ -22,6 +22,9 @@ libgstwayland_@GST_API_VERSION@_la_LDFLAGS = \
 	$(GST_ALL_LDFLAGS) \
 	$(GST_LT_LDFLAGS)
 
+libgstwayland_@GST_API_VERSION@include_HEADERS = \
+	wayland.h
+
 noinst_HEADERS = \
 	wayland.h
 
diff --git a/gst/adpcmdec/adpcmdec.c b/gst/adpcmdec/adpcmdec.c
index 3cfa820..4412d85 100644
--- a/gst/adpcmdec/adpcmdec.c
+++ b/gst/adpcmdec/adpcmdec.c
@@ -424,6 +424,10 @@ adpcmdec_handle_frame (GstAudioDecoder * bdec, GstBuffer * buffer)
         ("frame decode failed"), ret);
   }
 
+  if (bdec->ts_none) {
+	bdec->sub_ts_none = FALSE;
+  }
+
   if (ret == GST_FLOW_OK)
     ret = gst_audio_decoder_finish_frame (bdec, outbuf, 1);
 
diff --git a/gst/ivfparse/gstivfparse.c b/gst/ivfparse/gstivfparse.c
index e0e8401..df6a915 100644
--- a/gst/ivfparse/gstivfparse.c
+++ b/gst/ivfparse/gstivfparse.c
@@ -331,7 +331,8 @@ gst_ivf_parse_handle_frame_data (GstIvfParse * ivf, GstBaseParseFrame * frame,
     if (gst_buffer_map (frame->out_buffer, &map, GST_MAP_READ)) {
       guint32 width, height;
 
-      if (ivf->fourcc == GST_MAKE_FOURCC ('V', 'P', '8', '0')) {
+      if ((ivf->fourcc == GST_MAKE_FOURCC ('V', 'P', '8', '0')) ||
+        (ivf->fourcc == GST_MAKE_FOURCC ('V', 'P', '9', '0'))) {
         guint32 frame_tag;
         frame_tag = GST_READ_UINT24_LE (map.data);
         if (!(frame_tag & 0x01) && map.size >= 10) {    /* key frame */
diff --git a/gst/jpegformat/gstjpegformat.c b/gst/jpegformat/gstjpegformat.c
index b410466..1faf1ce 100644
--- a/gst/jpegformat/gstjpegformat.c
+++ b/gst/jpegformat/gstjpegformat.c
@@ -30,7 +30,7 @@
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-  if (!gst_element_register (plugin, "jpegparse", GST_RANK_NONE,
+  if (!gst_element_register (plugin, "jpegparse", GST_RANK_PRIMARY,
           GST_TYPE_JPEG_PARSE))
     return FALSE;
   if (!gst_element_register (plugin, "jifmux", GST_RANK_SECONDARY,
diff --git a/gst/jpegformat/gstjpegparse.c b/gst/jpegformat/gstjpegparse.c
index 0bfdc80..b9f1853 100644
--- a/gst/jpegformat/gstjpegparse.c
+++ b/gst/jpegformat/gstjpegparse.c
@@ -151,7 +151,7 @@ gst_jpeg_parse_class_init (GstJpegParseClass * klass)
 
   gst_element_class_set_static_metadata (gstelement_class,
       "JPEG stream parser",
-      "Video/Parser",
+      "Video/Parser/Codec",
       "Parse JPEG images into single-frame buffers",
       "Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>");
 
diff --git a/gst/mpegtsdemux/tsdemux.c b/gst/mpegtsdemux/tsdemux.c
index e5c78e7..49a426f 100644
--- a/gst/mpegtsdemux/tsdemux.c
+++ b/gst/mpegtsdemux/tsdemux.c
@@ -39,6 +39,9 @@
 #include <gst/pbutils/pbutils.h>
 #include <gst/base/base.h>
 #include <gst/audio/audio.h>
+#include <gst/riff/riff-read.h>
+#include <gst/riff/riff-ids.h>
+#include <gst/riff/riff-media.h>
 
 #include "mpegtsbase.h"
 #include "tsdemux.h"
@@ -1067,6 +1070,168 @@ gst_ts_demux_create_tags (TSDemuxStream * stream)
   }
 }
 
+static GstFlowReturn
+gst_ts_demux_scan_vc1_wh (MpegTSBase * base, guint * w, guint * h)
+{
+  const guint cacheSize = 64 * 1024;
+  const guint cacheCount = 32;
+  const guint gapCount = 4 + 2 + 3;
+  guint cacheStart = 0;
+  GstFlowReturn ret = GST_FLOW_ERROR;
+  gboolean done = FALSE;
+  GstBuffer *buffer = NULL;
+  guint i = 0;
+  guint offset = 0;
+  GstMapInfo map;
+  guint8 *data = NULL;
+  size_t size = 0;
+
+  if (G_UNLIKELY (base == NULL)) {
+    GST_DEBUG ("base is NULL");
+    return ret;
+  }
+
+  if (w == NULL || h == NULL) {
+    GST_DEBUG ("w or h is NULL");
+    return ret;
+  }
+
+  GST_DEBUG ("Scanning for width and height");
+
+  for (i = 0; (i < cacheCount) && !done; i++) {
+    if (i == 0) {
+      cacheStart = 0;
+    } else {
+      cacheStart = i * (cacheSize - gapCount);
+    }
+
+    GST_DEBUG ("Grabbing %d => %d", cacheStart, cacheStart + cacheSize);
+    ret = gst_pad_pull_range (base->sinkpad, cacheStart, cacheSize, &buffer);
+    if (G_UNLIKELY (ret == GST_FLOW_EOS)) {
+      break;
+    }
+    if (G_UNLIKELY (ret != GST_FLOW_OK)) {
+      break;
+    }
+
+    gst_buffer_map (buffer, &map, GST_MAP_READ);
+
+    data=map.data;
+    size=map.size;
+
+    for (offset = 0; offset <= (size - gapCount); offset++) {
+      if (memcmp("\x00\x00\x01\x0F", data + offset, 4)) {
+        offset++;
+      } else {
+        offset +=4;
+        offset +=2;
+
+        *w = (((data[offset] << 4) + (data[offset+1] >> 4)) << 1) + 2;
+        *h = ((((data[offset+1] & 0x0F) << 8) + data[offset+2]) << 1) + 2;
+        done = TRUE;
+        ret = GST_FLOW_OK;
+        break;
+      }
+    }
+
+    gst_buffer_unmap (buffer, &map);
+    gst_buffer_unref(buffer);
+    buffer = NULL;
+  }
+
+  return ret;
+}
+
+static GstFlowReturn
+gst_ts_demux_separate_vc1_header (GstTSDemux * demux, TSDemuxStream * stream, GstBuffer ** buffer)
+{
+  static gboolean headerPushed = FALSE;
+  GstFlowReturn res = GST_FLOW_OK;
+
+  if (memcmp("\x00\x00\x01\x0F", stream->data, 4)) {
+    if (!headerPushed) {
+      gst_buffer_unref (*buffer);
+      GST_DEBUG ("This frame should be dropped!");
+      res = GST_FLOW_ERROR;
+      return res;
+    }
+  } else {
+    GstBuffer *bufLeft = NULL;
+    const guint8 *data = stream->data;
+    size_t offset = 0;
+
+    while (offset + 3 < stream->current_size) {
+      if (memcmp(data+offset, "\x00\x00\x01", 3)) {
+        offset++;
+        continue;
+      } else {
+        guint currentStartCode = data[offset+3];
+
+        if (currentStartCode == 0x0F || currentStartCode == 0x0E) {
+          offset++;
+          continue;
+        } else {
+          //found data
+          break;
+        }
+      }
+    }
+
+    if (!headerPushed) {
+      GstCaps *caps = NULL;
+      GstStructure *str = NULL;
+      GstBuffer *bufVids = NULL;
+      GstBuffer *bufSeq = NULL;
+      GstBuffer *bufMerged = NULL;
+      guint width = 0;
+      guint height = 0;
+      gst_riff_strf_vids *pVids;
+      const guint sizeVids = sizeof (gst_riff_strf_vids);
+
+      pVids = g_new (gst_riff_strf_vids, 1);
+      memset (pVids, 0, sizeVids);
+
+      caps = gst_pad_get_current_caps (stream->pad);
+      if (caps) {
+        str = gst_caps_get_structure (caps, 0);
+
+        gst_structure_get_int (str, "width", &width);
+        gst_structure_get_int (str, "height", &height);
+      }
+
+      pVids->size = sizeVids + offset;
+      pVids->width = width;
+      pVids->height = height;
+
+      pVids->size = GUINT32_FROM_LE (pVids->size);
+      pVids->width = GUINT32_FROM_LE (pVids->width);
+      pVids->height = GUINT32_FROM_LE (pVids->height);
+      pVids->compression = GST_MAKE_FOURCC ('W', 'V', 'C', '1');
+
+      bufVids = gst_buffer_new_wrapped (g_memdup ((guint8 *) pVids,
+                sizeVids), sizeVids);
+      bufSeq = gst_buffer_new_wrapped (g_memdup ((guint8 *) data,
+                offset), offset);
+      bufMerged = gst_buffer_append (bufVids, bufSeq);
+
+      gst_pad_push (stream->pad, bufMerged);
+      headerPushed = TRUE;
+
+      if (pVids) {
+        g_free (pVids);
+      }
+    }
+
+    bufLeft = gst_buffer_copy_region (*buffer, GST_BUFFER_COPY_ALL, offset, stream->current_size-offset);
+    stream->current_size -= offset;
+    gst_buffer_unref (*buffer);
+    *buffer = bufLeft;
+    res = GST_FLOW_OK;
+  }
+
+  return res;
+}
+
 static GstPad *
 create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
     MpegTSBaseProgram * program)
@@ -1081,6 +1246,8 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
   gboolean sparse = FALSE;
   gboolean is_audio = FALSE, is_video = FALSE, is_subpicture = FALSE,
       is_private = FALSE;
+  guint width = 0;
+  guint height = 0;
 
   gst_ts_demux_create_tags (stream);
 
@@ -1565,6 +1732,10 @@ create_pad_for_stream (MpegTSBase * base, MpegTSBaseStream * bstream,
       is_video = TRUE;
       caps = gst_caps_new_simple ("video/x-wmv",
           "wmvversion", G_TYPE_INT, 3, "format", G_TYPE_STRING, "WVC1", NULL);
+
+	  gst_ts_demux_scan_vc1_wh (base, &width, &height);
+	  gst_caps_set_simple (caps, "width", G_TYPE_INT, width, NULL);
+	  gst_caps_set_simple (caps, "height", G_TYPE_INT, height, NULL);
 
       break;
     }
@@ -2945,6 +3116,13 @@ gst_ts_demux_push_pending_data (GstTSDemux * demux, TSDemuxStream * stream,
     }
   }
 
+  if (bs->stream_type == ST_PRIVATE_EA) {
+    if (G_UNLIKELY (gst_ts_demux_separate_vc1_header (demux, stream, &buffer)
+        != GST_FLOW_OK)) {
+      goto beach;
+    }
+  }
+
   if (G_UNLIKELY (stream->need_newsegment))
     calculate_and_push_newsegment (demux, stream, target_program);
 
diff --git a/gst/videoparsers/gsth264parse.c b/gst/videoparsers/gsth264parse.c
index 7751ea2..ceb2f58 100644
--- a/gst/videoparsers/gsth264parse.c
+++ b/gst/videoparsers/gsth264parse.c
@@ -167,6 +167,7 @@ gst_h264_parse_init (GstH264Parse * h264parse)
 
   h264parse->aud_needed = TRUE;
   h264parse->aud_insert = TRUE;
+  h264parse->caps_flag = FALSE;
 }
 
 
@@ -1835,13 +1836,21 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
       caps = gst_caps_copy (sink_caps);
 
       /* sps should give this but upstream overrides */
-      if (s && gst_structure_has_field (s, "width"))
-        gst_structure_get_int (s, "width", &width);
+      if (s && gst_structure_has_field (s, "width")) {
+         gst_structure_get_int (s, "width", &width);
+		 if (width != h264parse->width) {
+          width = h264parse->width;
+        }
+      }
       else
         width = h264parse->width;
 
-      if (s && gst_structure_has_field (s, "height"))
-        gst_structure_get_int (s, "height", &height);
+      if (s && gst_structure_has_field (s, "height")) {
+          gst_structure_get_int (s, "height", &height);
+		  if (height != h264parse->height) {
+          height = h264parse->height;
+        }
+      }
       else
         height = h264parse->height;
 
@@ -1988,7 +1997,10 @@ gst_h264_parse_update_src_caps (GstH264Parse * h264parse, GstCaps * caps)
         gst_buffer_replace (&h264parse->codec_data, NULL);
       }
 
-      gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (h264parse), caps);
+      if (sps && !h264parse->caps_flag) {
+        h264parse->caps_flag = TRUE;
+        gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (h264parse), caps);
+      }
     }
 
     if (src_caps)
@@ -2581,11 +2593,11 @@ gst_h264_parse_set_caps (GstBaseParse * parse, GstCaps * caps)
   if (format == GST_H264_PARSE_FORMAT_NONE) {
     /* codec_data implies avc */
     if (codec_data_value != NULL) {
-      GST_ERROR ("video/x-h264 caps with codec_data but no stream-format=avc");
+      GST_LOG ("video/x-h264 caps with codec_data but no stream-format=avc");
       format = GST_H264_PARSE_FORMAT_AVC;
     } else {
       /* otherwise assume bytestream input */
-      GST_ERROR ("video/x-h264 caps without codec_data or stream-format");
+      GST_LOG ("video/x-h264 caps without codec_data or stream-format");
       format = GST_H264_PARSE_FORMAT_BYTE;
     }
   }
diff --git a/gst/videoparsers/gsth264parse.h b/gst/videoparsers/gsth264parse.h
index 137c2cd..997c0e3 100644
--- a/gst/videoparsers/gsth264parse.h
+++ b/gst/videoparsers/gsth264parse.h
@@ -132,6 +132,7 @@ struct _GstH264Parse
   /* For insertion of AU Delimiter */
   gboolean aud_needed;
   gboolean aud_insert;
+  gboolean caps_flag;
 };
 
 struct _GstH264ParseClass
diff --git a/gst/videoparsers/gsth265parse.c b/gst/videoparsers/gsth265parse.c
index 775cd24..13c93ea 100644
--- a/gst/videoparsers/gsth265parse.c
+++ b/gst/videoparsers/gsth265parse.c
@@ -154,6 +154,7 @@ static void
 gst_h265_parse_init (GstH265Parse * h265parse)
 {
   h265parse->frame_out = gst_adapter_new ();
+  h265parse->has_caps_flag = FALSE;
   gst_base_parse_set_pts_interpolation (GST_BASE_PARSE (h265parse), FALSE);
   GST_PAD_SET_ACCEPT_INTERSECT (GST_BASE_PARSE_SINK_PAD (h265parse));
   GST_PAD_SET_ACCEPT_TEMPLATE (GST_BASE_PARSE_SINK_PAD (h265parse));
@@ -1761,7 +1762,12 @@ gst_h265_parse_update_src_caps (GstH265Parse * h265parse, GstCaps * caps)
         gst_buffer_replace (&h265parse->codec_data, NULL);
       }
 
-      gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (h265parse), caps);
+      if (h265parse->has_caps_flag == FALSE) {
+        GST_INFO_OBJECT (h265parse, "h265parse->has_caps_flag=FALSE");
+        gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (h265parse), caps);
+        h265parse->has_caps_flag = TRUE;
+      }
+
     }
 
     if (src_caps)
diff --git a/gst/videoparsers/gsth265parse.h b/gst/videoparsers/gsth265parse.h
index eb82f6f..0d6be87 100644
--- a/gst/videoparsers/gsth265parse.h
+++ b/gst/videoparsers/gsth265parse.h
@@ -86,6 +86,7 @@ struct _GstH265Parse
   /* frame parsing */
   gint idr_pos, sei_pos;
   gboolean update_caps;
+  gboolean has_caps_flag;
   GstAdapter *frame_out;
   gboolean keyframe;
   gboolean header;
diff --git a/gst/videoparsers/gstmpeg4videoparse.c b/gst/videoparsers/gstmpeg4videoparse.c
index 38e1f45..990f0db 100644
--- a/gst/videoparsers/gstmpeg4videoparse.c
+++ b/gst/videoparsers/gstmpeg4videoparse.c
@@ -210,6 +210,7 @@ gst_mpeg4vparse_reset (GstMpeg4VParse * mp4vparse)
   mp4vparse->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
   mp4vparse->force_key_unit_event = NULL;
   mp4vparse->discont = FALSE;
+  mp4vparse->vop_flag = FALSE;
 
   gst_buffer_replace (&mp4vparse->config, NULL);
   memset (&mp4vparse->vol, 0, sizeof (mp4vparse->vol));
@@ -338,6 +339,7 @@ gst_mpeg4vparse_process_sc (GstMpeg4VParse * mp4vparse, GstMpeg4Packet * packet,
       if (packet->type == GST_MPEG4_VIDEO_OBJ_PLANE) {
         GST_LOG_OBJECT (mp4vparse, "startcode is VOP");
         mp4vparse->vop_offset = packet->offset;
+		mp4vparse->vop_flag = TRUE;
       } else if (packet->type == GST_MPEG4_GROUP_OF_VOP) {
         GST_LOG_OBJECT (mp4vparse, "startcode is GOP");
       } else {
@@ -527,6 +529,7 @@ out:
       GST_BUFFER_FLAG_SET (frame->buffer, GST_BUFFER_FLAG_DISCONT);
       mp4vparse->discont = FALSE;
     }
+	mp4vparse->vop_flag = FALSE;
     return gst_base_parse_finish_frame (parse, frame, framesize);
   }
 
@@ -540,8 +543,8 @@ gst_mpeg4vparse_update_src_caps (GstMpeg4VParse * mp4vparse)
   GstStructure *s = NULL;
 
   /* only update if no src caps yet or explicitly triggered */
-  if (G_LIKELY (gst_pad_has_current_caps (GST_BASE_PARSE_SRC_PAD (mp4vparse)) &&
-          !mp4vparse->update_caps))
+  if (G_LIKELY (gst_pad_has_current_caps (GST_BASE_PARSE_SRC_PAD (mp4vparse)) ||
+    !mp4vparse->update_caps || (mp4vparse->vop_flag == FALSE)))
     return;
 
   GST_LOG_OBJECT (mp4vparse, "Updating caps");
@@ -641,7 +644,7 @@ gst_mpeg4vparse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
   else
     GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
 
-  if (G_UNLIKELY (mp4vparse->drop && !mp4vparse->config)) {
+  if (G_UNLIKELY (mp4vparse->drop && !mp4vparse->config && (mp4vparse->vop_flag == FALSE))) {
     GST_LOG_OBJECT (mp4vparse, "dropping frame as no config yet");
     return GST_BASE_PARSE_FLOW_DROPPED;
   } else
diff --git a/gst/videoparsers/gstmpeg4videoparse.h b/gst/videoparsers/gstmpeg4videoparse.h
index 149289a..73e4407 100644
--- a/gst/videoparsers/gstmpeg4videoparse.h
+++ b/gst/videoparsers/gstmpeg4videoparse.h
@@ -54,6 +54,7 @@ struct _GstMpeg4VParse {
   gboolean config_found;
   gboolean update_caps;
   gboolean sent_codec_tag;
+  gboolean vop_flag;
 
   GstMpeg4VisualObject vo;
   gint vo_offset;
diff --git a/gst/videoparsers/gstmpegvideoparse.c b/gst/videoparsers/gstmpegvideoparse.c
index 6896339..6547517 100644
--- a/gst/videoparsers/gstmpegvideoparse.c
+++ b/gst/videoparsers/gstmpegvideoparse.c
@@ -561,10 +561,10 @@ gst_mpegv_parse_process_sc (GstMpegvParse * mpvparse,
         ret = FALSE;
       } else {
         /* TSN is stored in first 10 bits */
-        int tsn = info->data[off] << 2 | (info->data[off + 1] & 0xC0) >> 6;
+        //int tsn = info->data[off] << 2 | (info->data[off + 1] & 0xC0) >> 6;
 
-        if (tsn == mpvparse->pichdr.tsn)        /* prevent termination if TSN is same */
-          ret = FALSE;
+        //if (tsn == mpvparse->pichdr.tsn)        /* prevent termination if TSN is same */
+        //  ret = FALSE;
       }
     }
   }
@@ -731,12 +731,18 @@ gst_mpegv_parse_update_src_caps (GstMpegvParse * mpvparse)
 {
   GstCaps *caps = NULL;
   GstStructure *s = NULL;
+  static gboolean is_first_in=TRUE;
 
   /* only update if no src caps yet or explicitly triggered */
   if (G_LIKELY (gst_pad_has_current_caps (GST_BASE_PARSE_SRC_PAD (mpvparse)) &&
           !mpvparse->update_caps))
     return;
 
+  if (!is_first_in) {
+    return;
+  }
+  is_first_in = FALSE;
+
   /* carry over input caps as much as possible; override with our own stuff */
   caps = gst_pad_get_current_caps (GST_BASE_PARSE_SINK_PAD (mpvparse));
   if (caps) {
@@ -758,24 +764,12 @@ gst_mpegv_parse_update_src_caps (GstMpegvParse * mpvparse)
       "parsed", G_TYPE_BOOLEAN, TRUE, NULL);
 
   if (mpvparse->sequencehdr.width > 0 && mpvparse->sequencehdr.height > 0) {
-    GstMpegVideoSequenceDisplayExt *seqdispext;
+
     gint width, height;
 
     width = mpvparse->sequencehdr.width;
     height = mpvparse->sequencehdr.height;
 
-    if (mpvparse->config_flags & FLAG_SEQUENCE_DISPLAY_EXT) {
-      seqdispext = &mpvparse->sequencedispext;
-
-      if (seqdispext->display_horizontal_size <= width
-          && seqdispext->display_vertical_size <= height) {
-        width = seqdispext->display_horizontal_size;
-        height = seqdispext->display_vertical_size;
-        GST_INFO_OBJECT (mpvparse,
-            "stream has display extension: display_width=%d display_height=%d",
-            width, height);
-      }
-    }
     gst_caps_set_simple (caps, "width", G_TYPE_INT, width,
         "height", G_TYPE_INT, height, NULL);
   }
@@ -927,6 +921,61 @@ gst_mpegv_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
 }
 
 static GstFlowReturn
+gst_mpegv_parse_frame_max_slice_no (const GstBuffer * buf, guint * max_slice_no)
+{
+  GstFlowReturn ret = GST_FLOW_OK;
+  GstBuffer *buffer = buf;
+  GstMapInfo map;
+  guint8 *data = NULL;
+  size_t size = 0;
+  size_t offset = 0;
+  guint max_no = 0;
+
+  gst_buffer_map (buffer, &map, GST_MAP_READ);
+  data = map.data;
+  size = map.size;
+
+  for (offset=0; offset + 3 < size; offset++) {
+    if (!memcmp(data+offset, "\x00\x00\x01", 3)) {
+      guint currentStartCode = data[offset+3];
+
+      if ((currentStartCode <= GST_MPEG_VIDEO_PACKET_SLICE_MAX) && (currentStartCode > max_no)) {
+        max_no = currentStartCode;
+      }
+    }
+  }
+
+  gst_buffer_unmap (buffer, &map);
+
+  *max_slice_no = max_no;
+  return ret;
+}
+
+static gboolean
+gst_mpegv_parse_frame_is_invalid (GstBaseParse * parse, GstBaseParseFrame * frame)
+{
+  GstMpegvParse *mpvparse = GST_MPEGVIDEO_PARSE (parse);
+  GstBuffer *buffer = frame->buffer;
+  static guint preFrameMaxSliceNo = 0;
+  guint curFrameMaxSliceNo = 0;
+  static gboolean shouldDrop = FALSE;
+
+  if (G_UNLIKELY (mpvparse->pichdr.pic_type != GST_MPEG_VIDEO_PICTURE_TYPE_I)) {
+    return shouldDrop;
+  }
+
+  gst_mpegv_parse_frame_max_slice_no (buffer, &curFrameMaxSliceNo);
+  if ((curFrameMaxSliceNo + 13) <= preFrameMaxSliceNo) {
+    shouldDrop = TRUE;
+  } else {
+    shouldDrop = FALSE;
+  }
+
+  preFrameMaxSliceNo = curFrameMaxSliceNo;
+  return shouldDrop;
+}
+
+static GstFlowReturn
 gst_mpegv_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
 {
   GstMpegvParse *mpvparse = GST_MPEGVIDEO_PARSE (parse);
@@ -939,6 +988,16 @@ gst_mpegv_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
   GstMpegVideoPictureExt *pic_ext = NULL;
   GstMpegVideoQuantMatrixExt *quant_ext = NULL;
 
+  if (gst_mpegv_parse_frame_is_invalid (parse, frame)) {
+    frame->flags |= GST_BASE_PARSE_FRAME_FLAG_DROP;
+    return GST_FLOW_OK;
+  }
+
+  GstBuffer *buffer = frame->buffer;
+  if (!GST_BUFFER_PTS_IS_VALID (buffer)) {
+    GST_BUFFER_PTS (buffer) = GST_BUFFER_DTS (buffer);
+  }
+
   /* tag sending done late enough in hook to ensure pending events
    * have already been sent */
 
-- 
1.9.1