From bc7e8282d3734949f4696bd846bd092a7c37feb6 Mon Sep 17 00:00:00 2001
From: Jan Schmidt <jan@centricular.com>
Date: Tue, 12 May 2015 21:52:24 +1000
Subject: [PATCH] dvdread: Work around basesrc initial seek

Ignore the initial seek basesrc sends, as it
breaks starting from another chapter by
immediately seeking back to the start of the title
---
 ext/dvdread/dvdreadsrc.c | 8 ++++++++
 ext/dvdread/dvdreadsrc.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/ext/dvdread/dvdreadsrc.c b/ext/dvdread/dvdreadsrc.c
index e0584ef9b6..52c0d22b08 100644
--- a/ext/dvdread/dvdreadsrc.c
+++ b/ext/dvdread/dvdreadsrc.c
@@ -115,6 +115,7 @@ gst_dvd_read_src_init (GstDvdReadSrc * src)
   src->dvd_title = NULL;
 
   src->location = g_strdup ("/dev/dvd");
+  src->first_seek = TRUE;
   src->new_seek = TRUE;
   src->new_cell = TRUE;
   src->change_cell = FALSE;
@@ -1239,6 +1240,13 @@ gst_dvd_read_src_do_seek (GstBaseSrc * basesrc, GstSegment * s)
   GST_DEBUG_OBJECT (src, "Seeking to %s: %12" G_GINT64_FORMAT,
       gst_format_get_name (s->format), s->position);
 
+  /* Ignore the first seek to 0, as it breaks starting playback
+   * from another chapter by seeking back to sector 0 */
+  if (src->first_seek && s->format == GST_FORMAT_BYTES && s->start == 0) {
+    src->first_seek = FALSE;
+    return TRUE;
+  }
+
   if (s->format == sector_format || s->format == GST_FORMAT_BYTES
       || s->format == GST_FORMAT_TIME) {
     guint old;
diff --git a/ext/dvdread/dvdreadsrc.h b/ext/dvdread/dvdreadsrc.h
index 4fa63724c7..fbca0ee02d 100644
--- a/ext/dvdread/dvdreadsrc.h
+++ b/ext/dvdread/dvdreadsrc.h
@@ -48,6 +48,7 @@ struct _GstDvdReadSrc {
   /* location */
   gchar           *location;
 
+  gboolean         first_seek;
   gboolean         new_seek;
   gboolean         change_cell;