[mutter] egl: Add vfuncs needed for client EGLStream surfaces

[Jonas Ådahl <jadahl src gnome org>]

commit f5bdf75f70272bd1bce632ecf15c8f5157343bea
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Oct 20 16:44:18 2016 +0800

    egl: Add vfuncs needed for client EGLStream surfaces
    
    https://bugzilla.gnome.org/show_bug.cgi?id=773629

 src/backends/meta-egl.c |   47 +++++++++++++++++++++++++++++++++++++++++++++++
 src/backends/meta-egl.h |   10 ++++++++++
 2 files changed, 57 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/meta-egl.c b/src/backends/meta-egl.c
index e61790a..b1e8b66 100644
--- a/src/backends/meta-egl.c
+++ b/src/backends/meta-egl.c
@@ -63,6 +63,10 @@ struct _MetaEgl
   PFNEGLSTREAMCONSUMERACQUIREATTRIBEXTPROC eglStreamConsumerAcquireAttribEXT;
 
   PFNEGLSTREAMCONSUMERGLTEXTUREEXTERNALKHRPROC eglStreamConsumerGLTextureExternalKHR;
+
+  PFNEGLSTREAMCONSUMERACQUIREKHRPROC eglStreamConsumerAcquireKHR;
+
+  PFNEGLCREATESTREAMFROMFILEDESCRIPTORKHRPROC eglCreateStreamFromFileDescriptorKHR;
 };
 
 G_DEFINE_TYPE (MetaEgl, meta_egl, G_TYPE_OBJECT)
@@ -655,6 +659,45 @@ meta_egl_stream_consumer_gl_texture_external (MetaEgl     *egl,
   return TRUE;
 }
 
+gboolean
+meta_egl_stream_consumer_acquire (MetaEgl     *egl,
+                                  EGLDisplay   display,
+                                  EGLStreamKHR stream,
+                                  GError     **error)
+{
+  if (!is_egl_proc_valid (egl->eglStreamConsumerAcquireKHR, error))
+    return FALSE;
+
+  if (!egl->eglStreamConsumerAcquireKHR (display, stream))
+    {
+      set_egl_error (error);
+      return FALSE;
+    }
+
+  return TRUE;
+}
+
+EGLStreamKHR
+meta_egl_create_stream_from_file_descriptor (MetaEgl                   *egl,
+                                             EGLDisplay                 display,
+                                             EGLNativeFileDescriptorKHR file_descriptor,
+                                             GError                   **error)
+{
+  EGLStreamKHR stream;
+
+  if (!is_egl_proc_valid (egl->eglCreateStreamFromFileDescriptorKHR, error))
+    return EGL_NO_STREAM_KHR;
+
+  stream = egl->eglCreateStreamFromFileDescriptorKHR (display, file_descriptor);
+  if (stream == EGL_NO_STREAM_KHR)
+    {
+      set_egl_error (error);
+      return EGL_NO_STREAM_KHR;
+    }
+
+  return stream;
+}
+
 #define GET_EGL_PROC_ADDR(proc) \
   egl->proc = (void *) eglGetProcAddress (#proc);
 
@@ -694,6 +737,10 @@ meta_egl_constructed (GObject *object)
   GET_EGL_PROC_ADDR (eglStreamConsumerAcquireAttribEXT);
 
   GET_EGL_PROC_ADDR (eglStreamConsumerGLTextureExternalKHR);
+
+  GET_EGL_PROC_ADDR (eglStreamConsumerAcquireKHR);
+
+  GET_EGL_PROC_ADDR (eglCreateStreamFromFileDescriptorKHR);
 }
 
 #undef GET_EGL_PROC_ADDR
diff --git a/src/backends/meta-egl.h b/src/backends/meta-egl.h
index 191955c..b7bdf32 100644
--- a/src/backends/meta-egl.h
+++ b/src/backends/meta-egl.h
@@ -148,9 +148,19 @@ gboolean meta_egl_stream_consumer_acquire_attrib (MetaEgl     *egl,
                                                   EGLAttrib   *attrib_list,
                                                   GError     **error);
 
+gboolean meta_egl_stream_consumer_acquire (MetaEgl     *egl,
+                                           EGLDisplay   display,
+                                           EGLStreamKHR stream,
+                                           GError     **error);
+
 gboolean meta_egl_stream_consumer_gl_texture_external (MetaEgl     *egl,
                                                        EGLDisplay   display,
                                                        EGLStreamKHR stream,
                                                        GError     **error);
 
+EGLStreamKHR meta_egl_create_stream_from_file_descriptor (MetaEgl                   *egl,
+                                                          EGLDisplay                 display,
+                                                          EGLNativeFileDescriptorKHR file_descriptor,
+                                                          GError                   **error);
+
 #endif /* META_EGL_H */