vout: add window owner structure and resize event

include/vlc_vout_window.h

@@ -80,6 +80,11 @@ typedef struct {
 
 } vout_window_cfg_t;
 
+typedef struct vout_window_owner {
+    void *sys;
+    void (*resized)(vout_window_t *, unsigned width, unsigned height);
+} vout_window_owner_t;
+
 /**
  * FIXME do we need an event system in the window too ?
  * or the window user will take care of it ?
@@ -118,6 +123,8 @@ struct vout_window_t {
      * A module is free to use it as it wishes.
      */
     vout_window_sys_t *sys;
+
+    vout_window_owner_t owner;
 };
 
 /**
@@ -128,7 +135,7 @@ struct vout_window_t {
  / vout_display_NewWindow() and vout_display_DeleteWindow() instead.
  * This enables recycling windows.
  */
-VLC_API vout_window_t * vout_window_New(vlc_object_t *, const char *module, const vout_window_cfg_t *);
+VLC_API vout_window_t * vout_window_New(vlc_object_t *, const char *module, const vout_window_cfg_t *, const vout_window_owner_t *);
 
 /**
  * Deletes a window created by vout_window_New().
@@ -186,4 +193,11 @@ static inline int vout_window_SetFullScreen(vout_window_t *window, bool full)
     return vout_window_Control(window, VOUT_WINDOW_SET_FULLSCREEN, full);
 }
 
+static inline void vout_window_ReportSize(vout_window_t *window,
+                                          unsigned width, unsigned height)
+{
+    if (window->owner.resized != NULL)
+        window->owner.resized(window, width, height);
+}
+
 #endif /* VLC_VOUT_WINDOW_H */

src/video_output/display.c

@@ -746,7 +746,8 @@ static vout_window_t *VoutDisplayNewWindow(vout_display_t *vd, const vout_window
         if (!var_InheritBool(osys->vout, "embedded-video"))
             cfg_override.is_standalone = true;
 
-        return vout_window_New(VLC_OBJECT(osys->vout), "$window", &cfg_override);
+        return vout_window_New(VLC_OBJECT(osys->vout), "$window",
+                               &cfg_override, NULL);
     }
 #endif
     return vout_NewDisplayWindow(osys->vout, cfg);
@@ -1445,7 +1446,7 @@ static vout_window_t *SplitterNewWindow(vout_display_t *vd, const vout_window_cf
     vout_window_cfg_t cfg = *cfg_ptr;
     cfg.is_standalone = true;
 
-    return vout_window_New(VLC_OBJECT(osys->vout), "$window", &cfg);
+    return vout_window_New(VLC_OBJECT(osys->vout), "$window", &cfg, NULL);
 }
 
 static void SplitterDelWindow(vout_display_t *vd, vout_window_t *window)

src/video_output/video_output.c

@@ -173,7 +173,8 @@ static vout_thread_t *VoutCreate(vlc_object_t *object,
             .height = cfg->fmt->i_visible_height,
         };
 
-        vout->p->window = vout_window_New(VLC_OBJECT(vout), "$window", &wcfg);
+        vout->p->window = vout_window_New(VLC_OBJECT(vout), "$window", &wcfg,
+                                          NULL);
     } else
         vout->p->window = NULL;
 

src/video_output/window.c

@@ -51,9 +51,9 @@ static int vout_window_start(void *func, va_list ap)
     return activate(wnd, cfg);
 }
 
-vout_window_t *vout_window_New(vlc_object_t *obj,
-                               const char *module,
-                               const vout_window_cfg_t *cfg)
+vout_window_t *vout_window_New(vlc_object_t *obj, const char *module,
+                               const vout_window_cfg_t *cfg,
+                               const vout_window_owner_t *owner)
 {
     window_t *w = vlc_custom_create(obj, sizeof(*w), "window");
     vout_window_t *window = &w->wnd;
@@ -62,6 +62,11 @@ vout_window_t *vout_window_New(vlc_object_t *obj,
     window->control = NULL;
     window->sys = NULL;
 
+    if (owner != NULL)
+        window->owner = *owner;
+    else
+        window->owner.resized = NULL;
+
     w->module = vlc_module_load(window, "vout window", module,
                                 module && *module,
                                 vout_window_start, window, cfg);