vout: dispatch window events to the display events handler

src/Makefile.am

@@ -412,6 +412,7 @@ SOURCES_libvlc_common = \
 	video_output/video_widgets.c \
 	video_output/vout_subpictures.c \
 	video_output/window.c \
+	video_output/window.h \
 	video_output/opengl.c \
 	video_output/vout_intf.c \
 	video_output/vout_internal.h \

src/video_output/display.c

@@ -39,6 +39,7 @@
 #include <libvlc.h>
 
 #include "display.h"
+#include "window.h"
 
 #include "event.h"
 
@@ -734,6 +735,7 @@ static void VoutDisplayEvent(vout_display_t *vd, int event, va_list args)
 static vout_window_t *VoutDisplayNewWindow(vout_display_t *vd, const vout_window_cfg_t *cfg)
 {
     vout_display_owner_sys_t *osys = vd->owner.sys;
+    vout_window_t *window;
 
 #ifdef ALLOW_DUMMY_VOUT
     if (!osys->vout->p) {
@@ -742,24 +744,30 @@ 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, NULL);
+        window = vout_display_window_New(osys->vout, &cfg_override);
     }
+    else
 #endif
-    return vout_NewDisplayWindow(osys->vout, cfg);
+        window = vout_NewDisplayWindow(osys->vout, cfg);
+
+    if (window != NULL)
+        vout_display_window_Attach(window, vd);
+    return window;
 }
 
 static void VoutDisplayDelWindow(vout_display_t *vd, vout_window_t *window)
 {
     vout_display_owner_sys_t *osys = vd->owner.sys;
 
+    if (window != NULL)
+        vout_display_window_Detach(window);
 #ifdef ALLOW_DUMMY_VOUT
     if (!osys->vout->p) {
         if( window)
-            vout_window_Delete(window);
-        return;
+            vout_display_window_Delete(window);
     }
 #endif
+    else
         vout_DeleteDisplayWindow(osys->vout, window);
 }
 
@@ -1434,17 +1442,23 @@ struct video_splitter_owner_t {
 static vout_window_t *SplitterNewWindow(vout_display_t *vd, const vout_window_cfg_t *cfg_ptr)
 {
     vout_display_owner_sys_t *osys = vd->owner.sys;
+    vout_window_t *window;
 
     vout_window_cfg_t cfg = *cfg_ptr;
     cfg.is_standalone = true;
 
-    return vout_window_New(VLC_OBJECT(osys->vout), "$window", &cfg, NULL);
+    window = vout_display_window_New(osys->vout, &cfg);
+    if (window != NULL)
+        vout_display_window_Attach(window, vd);
+    return window;
 }
 
 static void SplitterDelWindow(vout_display_t *vd, vout_window_t *window)
 {
-    if (window != NULL)
-        vout_window_Delete(window);
+    if (window != NULL) {
+        vout_display_window_Detach(window);
+        vout_display_window_Delete(window);
+    }
     (void) vd;
 }
 

src/video_output/video_output.c

@@ -50,6 +50,7 @@
 #include "vout_internal.h"
 #include "interlacing.h"
 #include "display.h"
+#include "window.h"
 
 /*****************************************************************************
  * Local prototypes
@@ -173,8 +174,7 @@ 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,
-                                          NULL);
+        vout->p->window = vout_display_window_New(vout, &wcfg);
     } else
         vout->p->window = NULL;
 
@@ -642,7 +642,7 @@ vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout,
 void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_window_t *window)
 {
     if (window == NULL && vout->p->window != NULL) {
-        vout_window_Delete(vout->p->window);
+        vout_display_window_Delete(vout->p->window);
         vout->p->window = NULL;
     }
     assert(vout->p->window == window);

src/video_output/window.c

@@ -111,3 +111,103 @@ void vout_window_Delete(vout_window_t *window)
     vlc_module_unload(w->module, vout_window_stop, window);
     vlc_object_release(window);
 }
+
+/* Video output display integration */
+#include <vlc_vout_display.h>
+#include "window.h"
+
+typedef struct vout_display_window
+{
+    vout_display_t *vd;
+    unsigned width;
+    unsigned height;
+
+    vlc_mutex_t lock;
+} vout_display_window_t;
+
+static void vout_display_window_ResizeNotify(vout_window_t *window,
+                                             unsigned width, unsigned height)
+{
+    vout_display_window_t *state = window->owner.sys;
+
+    msg_Dbg(window, "resized to %ux%u", width, height);
+    vlc_mutex_lock(&state->lock);
+    state->width = width;
+    state->height = height;
+
+    if (state->vd != NULL)
+        vout_display_SendEventDisplaySize(state->vd, width, height);
+    vlc_mutex_unlock(&state->lock);
+}
+
+/**
+ * Creates a video window, initially without any attached display.
+ */
+vout_window_t *vout_display_window_New(vout_thread_t *vout,
+                                       const vout_window_cfg_t *cfg)
+{
+    vout_display_window_t *state = malloc(sizeof (*state));
+    if (state == NULL)
+        return NULL;
+
+    state->vd = NULL;
+    state->width = cfg->width;
+    state->height = cfg->height;
+    vlc_mutex_init(&state->lock);
+
+    vout_window_owner_t owner = {
+        .sys = state,
+        .resized = vout_display_window_ResizeNotify,
+    };
+    vout_window_t *window;
+
+    window = vout_window_New((vlc_object_t *)vout, "$window", cfg, &owner);
+    if (window == NULL) {
+        vlc_mutex_destroy(&state->lock);
+        free(state);
+    }
+    return window;
+}
+
+/**
+ * Attaches a window to a display. Window events will be dispatched to the
+ * display until they are detached.
+ */
+void vout_display_window_Attach(vout_window_t *window, vout_display_t *vd)
+{
+    vout_display_window_t *state = window->owner.sys;
+
+    vlc_mutex_lock(&state->lock);
+    state->vd = vd;
+
+    vout_display_SendEventDisplaySize(vd, state->width, state->height);
+    vlc_mutex_unlock(&state->lock);
+}
+
+/**
+ * Detaches a window from a display. Window events will no longer be dispatched
+ * (except those that do not need a display).
+ */
+void vout_display_window_Detach(vout_window_t *window)
+{
+    vout_display_window_t *state = window->owner.sys;
+
+    vlc_mutex_lock(&state->lock);
+    state->vd = NULL;
+    vlc_mutex_unlock(&state->lock);
+}
+
+/**
+ * Destroys a video window.
+ * \note The window must be detached.
+ */
+void vout_display_window_Delete(vout_window_t *window)
+{
+    vout_display_window_t *state = window->owner.sys;
+
+    vout_window_Delete(window);
+
+    assert(state->vd == NULL);
+    vlc_mutex_destroy(&state->lock);
+    free(state);
+}

src/video_output/window.h

+/*****************************************************************************
+ * window.h: window managment for VLC video output
+ *****************************************************************************
+ * Copyright © 2014 Rémi Denis-Courmont
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+vout_window_t *vout_display_window_New(vout_thread_t *,
+                                       const vout_window_cfg_t *);
+void vout_display_window_Attach(vout_window_t *, vout_display_t *);
+void vout_display_window_Detach(vout_window_t *);
+void vout_display_window_Delete(vout_window_t *);