Add can-rate to distinguish between normal rate control and negative playback direction.

(cherry picked from commit: f400b143)
Signed-off-by: Jean-Paul Saman <jpsaman@videolan.org>

modules/control/rc.c

@@ -1088,7 +1088,7 @@ static int Input( vlc_object_t *p_this, char const *psz_cmd,
     }
     else if ( !strcmp( psz_cmd, "fastforward" ) )
     {
-        if( var_GetBool( p_input, "can-rewind" ) )
+        if( var_GetBool( p_input, "can-rate" ) )
         {
             int i_rate = var_GetInteger( p_input, "rate" );
             i_rate = (i_rate < 0) ? -i_rate : i_rate * 2;

src/input/input.c

@@ -2203,6 +2203,7 @@ static int InputSourceInit( input_thread_t *p_input,
                             &in->b_can_pause ) )
             in->b_can_pause = false;
         var_SetBool( p_input, "can-pause", in->b_can_pause );
+        var_SetBool( p_input, "can-rate", in->b_can_rate_control );
         var_SetBool( p_input, "can-rewind", !in->b_rescale_ts );
 
         int ret = demux_Control( in->p_demux, DEMUX_CAN_SEEK,
@@ -2290,6 +2291,7 @@ static int InputSourceInit( input_thread_t *p_input,
                              &in->b_can_pause );
 
             var_SetBool( p_input, "can-pause", in->b_can_pause );
+            var_SetBool( p_input, "can-rate", in->b_can_rate_control );
             var_SetBool( p_input, "can-rewind", !in->b_rescale_ts );
 
             access_Control( in->p_access, ACCESS_CAN_SEEK,

src/input/var.c

@@ -473,6 +473,9 @@ void input_ConfigVarInit ( input_thread_t *p_input )
     val.b_bool = true; /* Fixed later*/
     var_Change( p_input, "can-pause", VLC_VAR_SETVALUE, &val, NULL );
 
+    var_Create( p_input, "can-rate", VLC_VAR_BOOL );
+    var_SetBool( p_input, "can-rate", false );
+
     var_Create( p_input, "can-rewind", VLC_VAR_BOOL );
     val.b_bool = false;
     var_Change( p_input, "can-rewind", VLC_VAR_SETVALUE, &val, NULL );