[vlc-commits] mkv: introduced helper functions related to indexes

[Filip Roséen]

vlc | branch: master | Filip Roséen <filip at videolabs.io> | Wed Mar  9 12:49:56 2016 +0100| [0a7d6eb836784c7b265cdb88331cb12b5f7a2ed8] | committer: Jean-Baptiste Kempf

mkv: introduced helper functions related to indexes

Signed-off-by: Jean-Baptiste Kempf <jb at videolan.org>

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=0a7d6eb836784c7b265cdb88331cb12b5f7a2ed8
---

 modules/demux/mkv/matroska_segment.cpp |    8 +++-----
 modules/demux/mkv/matroska_segment.hpp |    7 +++++--
 modules/demux/mkv/mkv.cpp              |    4 ++--
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/modules/demux/mkv/matroska_segment.cpp b/modules/demux/mkv/matroska_segment.cpp
index ca72176..64d775b 100644
--- a/modules/demux/mkv/matroska_segment.cpp
+++ b/modules/demux/mkv/matroska_segment.cpp
@@ -893,13 +893,11 @@ void matroska_segment_c::Seek( mtime_t i_mk_date, mtime_t i_mk_time_offset, int6
         return;
     }
 
-    indexes_t::const_iterator index_it = indexes.begin ();
+    indexes_t::const_iterator index_it = indexes_begin ();
 
     if ( index_idx() )
     {
-        indexes_t::const_iterator last_active_it = indexes.end() - 1;
-
-        for( ; index_it != last_active_it; ++index_it )
+        for( ; index_it != indexes_end(); ++index_it )
         {
             if (index_it->i_mk_time == -1)
                 continue;
@@ -908,7 +906,7 @@ void matroska_segment_c::Seek( mtime_t i_mk_date, mtime_t i_mk_time_offset, int6
                 break;
         }
 
-        if( index_it != indexes.begin ())
+        if( index_it != indexes_begin ())
             --index_it;
 
         i_seek_position = index_it->i_position;
diff --git a/modules/demux/mkv/matroska_segment.hpp b/modules/demux/mkv/matroska_segment.hpp
index cab3702..a1b8b92 100644
--- a/modules/demux/mkv/matroska_segment.hpp
+++ b/modules/demux/mkv/matroska_segment.hpp
@@ -145,8 +145,11 @@ public:
     void UnSelect();
 
     size_t        index_idx () const { return indexes.size () - 1; }
-    mkv_index_t&      index () { return *indexes.rbegin (); }
-    mkv_index_t& prev_index () { return *(indexes.end()-2); }
+    mkv_index_t&      index ()       { return *(indexes.rbegin()); }
+    mkv_index_t& prev_index ()       { return *(indexes.rbegin()+1); }
+
+    indexes_t::iterator indexes_begin () { return indexes.begin(); }
+    indexes_t::iterator indexes_end   () { return indexes.end() - (indexes.size() ? 1 : 0); }
 
     static bool CompareSegmentUIDs( const matroska_segment_c * item_a, const matroska_segment_c * item_b );
 
diff --git a/modules/demux/mkv/mkv.cpp b/modules/demux/mkv/mkv.cpp
index 35b52c7..cd31bb7 100644
--- a/modules/demux/mkv/mkv.cpp
+++ b/modules/demux/mkv/mkv.cpp
@@ -475,8 +475,8 @@ static void Seek( demux_t *p_demux, mtime_t i_mk_date, double f_percent, virtual
 
             if (p_segment->indexes.size())
             {
-                matroska_segment_c::indexes_t::iterator it          = p_segment->indexes.begin ();
-                matroska_segment_c::indexes_t::iterator last_active = p_segment->indexes.end()-1;
+                matroska_segment_c::indexes_t::iterator it          = p_segment->indexes_begin ();
+                matroska_segment_c::indexes_t::iterator last_active = p_segment->indexes_end ();
 
                 for ( ; it != last_active; ++it )
                 {