[vlc-devel] [PATCH 5/6] demux: add control calls to read the demuxer title/seekpoint

[Steve Lhomme]

this will become handy with the demux filters
---
 include/vlc_demux.h |  5 ++++
 src/input/demux.c   | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 70 insertions(+), 3 deletions(-)

diff --git a/include/vlc_demux.h b/include/vlc_demux.h
index f4baeea..9a74908 100644
--- a/include/vlc_demux.h
+++ b/include/vlc_demux.h
@@ -187,6 +187,11 @@ enum demux_query_e
      * arg1= int */
     DEMUX_SET_SEEKPOINT,        /* arg1= int            can fail */
 
+    DEMUX_GET_UPDATE_FLAGS,     /* arg1= int*           can fail */
+    DEMUX_CLEAR_UPDATE_FLAGS,   /* arg1= const int*     can fail */
+    DEMUX_GET_TITLE,            /* arg1= int*           can fail */
+    DEMUX_GET_SEEKPOINT,        /* arg1= int*           can fail */
+
     /* I. Common queries to access_demux and demux */
     /* POSITION double between 0.0 and 1.0 */
     DEMUX_GET_POSITION = 0x300, /* arg1= double *       res=    */
diff --git a/src/input/demux.c b/src/input/demux.c
index baf1880..9178928 100644
--- a/src/input/demux.c
+++ b/src/input/demux.c
@@ -416,6 +416,58 @@ int demux_vaControl( demux_t *demux, int query, va_list args )
             }
         }
 
+    switch( query )
+    {
+        case DEMUX_GET_UPDATE_FLAGS:
+        {
+            int ret;
+            va_list ap;
+
+            va_copy( ap, args );
+            ret = demux->pf_control( demux, query, args );
+            if (ret != VLC_SUCCESS)
+                *va_arg( ap, int * ) = demux->info.i_update;
+            va_end( ap );
+            return VLC_SUCCESS;
+        }
+        case DEMUX_CLEAR_UPDATE_FLAGS:
+        {
+            int ret;
+            va_list ap;
+
+            va_copy( ap, args );
+            ret = demux->pf_control( demux, query, args );
+            if (ret != VLC_SUCCESS)
+                demux->info.i_update &= ~(*va_arg( ap, const int * ));
+            va_end( ap );
+            return VLC_SUCCESS;
+        }
+        case DEMUX_GET_TITLE:
+        {
+            int ret;
+            va_list ap;
+
+            va_copy( ap, args );
+            ret = demux->pf_control( demux, query, args );
+            if (ret != VLC_SUCCESS)
+                *va_arg( ap, int * ) = demux->info.i_title;
+            va_end( ap );
+            return VLC_SUCCESS;
+        }
+        case DEMUX_GET_SEEKPOINT:
+        {
+            int ret;
+            va_list ap;
+
+            va_copy( ap, args );
+            ret = demux->pf_control( demux, query, args );
+            if (ret != VLC_SUCCESS)
+                *va_arg( ap, int * ) = demux->info.i_seekpoint;
+            va_end( ap );
+            return VLC_SUCCESS;
+        }
+    }
+
     return demux->pf_control( demux, query, args );
 }
 
@@ -658,20 +710,30 @@ static bool SkipAPETag( demux_t *p_demux )
 
 int demux_GetUpdateFlags( demux_t *p_demux )
 {
+    int i_update;
+    if ( demux_Control( p_demux, DEMUX_GET_UPDATE_FLAGS, &i_update ) == VLC_SUCCESS )
+        return i_update;
     return p_demux->info.i_update;
 }
 
 void demux_ResetUpdateFlags( demux_t *p_demux, int i_flags )
 {
-    p_demux->info.i_update &= ~i_flags;
+    if ( demux_Control( p_demux, DEMUX_CLEAR_UPDATE_FLAGS, &i_flags ) != VLC_SUCCESS )
+        p_demux->info.i_update &= ~i_flags;
 }
 
 int demux_GetTitle( demux_t *p_demux )
 {
-    return p_demux->info.i_title;
+    int i_title;
+    if ( demux_Control( p_demux, DEMUX_GET_TITLE, &i_title ) == VLC_SUCCESS )
+        return i_title;
+    return 0;
 }
 
 int demux_GetSeekpoint( demux_t *p_demux )
 {
-    return p_demux->info.i_seekpoint;
+    int i_seekpoint;
+    if ( demux_Control( p_demux, DEMUX_GET_SEEKPOINT, &i_seekpoint ) == VLC_SUCCESS  )
+        return i_seekpoint;
+    return 0;
 }
-- 
2.7.0