From 5db4db68369e10cf1278a197045bbb40a903896c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Sun, 13 Apr 2014 16:40:58 +0200
Subject: [PATCH] gl/android: Notify the window's resize callback about surface
 dimension changes

https://bugzilla.gnome.org/show_bug.cgi?id=728107
---
 .../gst/gl/android/gstglwindow_android_egl.c  | 22 ++++++++++++++++++-
 .../gst/gl/android/gstglwindow_android_egl.h  |  1 +
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/gst-libs/gst/gl/android/gstglwindow_android_egl.c b/gst-libs/gst/gl/android/gstglwindow_android_egl.c
index 1f23b28ee6..1a70999ce1 100644
--- a/gst-libs/gst/gl/android/gstglwindow_android_egl.c
+++ b/gst-libs/gst/gl/android/gstglwindow_android_egl.c
@@ -30,6 +30,7 @@
 
 #include <gst/gst.h>
 
+#include <gst/gl/egl/gstglcontext_egl.h>
 #include "gstglwindow_android_egl.h"
 
 #define GST_CAT_DEFAULT gst_gl_window_debug
@@ -212,8 +213,26 @@ draw_cb (gpointer data)
   GstGLWindowAndroidEGL *window_egl = draw_data->window;
   GstGLWindow *window = GST_GL_WINDOW (window_egl);
   GstGLContext *context = gst_gl_window_get_context (window);
+  GstGLContextEGL *context_egl = GST_GL_CONTEXT_EGL (context);
   GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
 
+  if (context_egl->egl_surface) {
+    gint width, height;
+
+    if (eglQuerySurface (context_egl->egl_display,
+            context_egl->egl_surface, EGL_WIDTH, &width) &&
+        eglQuerySurface (context_egl->egl_display,
+            context_egl->egl_surface, EGL_HEIGHT, &height)
+        && (width != window_egl->window_width
+            || height != window_egl->window_height)) {
+      window_egl->window_width = width;
+      window_egl->window_height = height;
+
+      if (window->resize)
+        window->resize (window->resize_data, width, height);
+    }
+  }
+
   if (window->draw)
     window->draw (window->draw_data);
 
@@ -226,8 +245,9 @@ static void
 gst_gl_window_android_egl_draw (GstGLWindow * window, guint width, guint height)
 {
   struct draw draw_data;
+  GstGLWindowAndroidEGL *window_egl = GST_GL_WINDOW_ANDROID_EGL (window);
 
-  draw_data.window = GST_GL_WINDOW_ANDROID_EGL (window);
+  draw_data.window = window_egl;
   draw_data.width = width;
   draw_data.height = height;
 
diff --git a/gst-libs/gst/gl/android/gstglwindow_android_egl.h b/gst-libs/gst/gl/android/gstglwindow_android_egl.h
index e5ea1cb71d..0e927e3eca 100644
--- a/gst-libs/gst/gl/android/gstglwindow_android_egl.h
+++ b/gst-libs/gst/gl/android/gstglwindow_android_egl.h
@@ -42,6 +42,7 @@ struct _GstGLWindowAndroidEGL {
 
   /* This is actually an ANativeWindow */
   EGLNativeWindowType native_window;
+  gint window_width, window_height;
 
   GMainContext *main_context;
   GMainLoop *loop;