[vlc-devel] [PATCH 2/5] input: extends navigation control

[Thomas Guillem]

Add ControlNav() function. It moves the viewpoint if the input is not a menu.
---
 src/input/input.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 64 insertions(+), 2 deletions(-)

diff --git a/src/input/input.c b/src/input/input.c
index 49653db76f..f02557370f 100644
--- a/src/input/input.c
+++ b/src/input/input.c
@@ -1763,6 +1763,69 @@ static void ViewpointApply( input_thread_t *p_input )
     }
 }
 
+static void ControlNav( input_thread_t *p_input, int i_type )
+{
+    input_thread_private_t *priv = input_priv(p_input);
+
+    /* Handle navigation if input has title */
+    if( priv->master->i_title > 0 )
+    {
+        demux_Control( input_priv(p_input)->master->p_demux, i_type
+                       - INPUT_CONTROL_NAV_ACTIVATE + DEMUX_NAV_ACTIVATE );
+        return;
+    }
+
+    vlc_viewpoint_t vp = {};
+    switch( i_type )
+    {
+        case INPUT_CONTROL_NAV_UP:
+            vp.pitch = -1.f;
+            break;
+        case INPUT_CONTROL_NAV_DOWN:
+            vp.pitch = 1.f;
+            break;
+        case INPUT_CONTROL_NAV_LEFT:
+            vp.yaw = -1.f;
+            break;
+        case INPUT_CONTROL_NAV_RIGHT:
+            vp.yaw = 1.f;
+            break;
+        case INPUT_CONTROL_NAV_ACTIVATE:
+        case INPUT_CONTROL_NAV_POPUP:
+        case INPUT_CONTROL_NAV_MENU:
+            return;
+        default:
+            vlc_assert_unreachable();
+    }
+
+    /* Handle Up/Down/Left/Right if the input can't navigate */
+
+    /* Try to change the viewpoint if possible */
+    vout_thread_t **pp_vout;
+    size_t i_vout;
+    bool b_viewpoint_ch = false;
+    input_resource_HoldVouts( priv->p_resource, &pp_vout, &i_vout );
+    for( size_t i = 0; i < i_vout; ++i )
+    {
+        if( !b_viewpoint_ch
+         && var_GetBool( pp_vout[i], "viewpoint-changeable" ) )
+            b_viewpoint_ch = true;
+        vlc_object_release( pp_vout[i] );
+    }
+    free( pp_vout );
+
+    if( b_viewpoint_ch )
+    {
+        priv->viewpoint_changed = true;
+        priv->viewpoint.yaw   += vp.yaw;
+        priv->viewpoint.pitch += vp.pitch;
+        priv->viewpoint.roll  += vp.roll;
+        priv->viewpoint.fov   += vp.fov;
+        ViewpointApply( p_input );
+        return;
+    }
+}
+
 static bool Control( input_thread_t *p_input,
                      int i_type, vlc_value_t val )
 {
@@ -2190,8 +2253,7 @@ static bool Control( input_thread_t *p_input,
         case INPUT_CONTROL_NAV_RIGHT:
         case INPUT_CONTROL_NAV_POPUP:
         case INPUT_CONTROL_NAV_MENU:
-            demux_Control( input_priv(p_input)->master->p_demux, i_type
-                           - INPUT_CONTROL_NAV_ACTIVATE + DEMUX_NAV_ACTIVATE );
+            ControlNav( p_input, i_type );
             break;
 
         default:
-- 
2.11.0