[mutter/wip/nielsdg/add-yuv-support] WIP: add YUV support

[Niels De Graef <nielsdg src gnome org>]

commit e1dfaac17ae726be7429c8cb639575464b56e75e
Author: Niels De Graef <Niels DeGraef barco com>
Date:   Tue Oct 23 12:26:30 2018 +0200

    WIP: add YUV support

 cogl/cogl/cogl-bitmap-conversion.c |  1 +
 cogl/cogl/cogl-types.h             |  4 +++-
 src/wayland/meta-wayland-buffer.c  | 17 +++++++++++++++++
 3 files changed, 21 insertions(+), 1 deletion(-)
---
diff --git a/cogl/cogl/cogl-bitmap-conversion.c b/cogl/cogl/cogl-bitmap-conversion.c
index 9748aca0c..14634d03e 100644
--- a/cogl/cogl/cogl-bitmap-conversion.c
+++ b/cogl/cogl/cogl-bitmap-conversion.c
@@ -323,6 +323,7 @@ _cogl_bitmap_needs_short_temp_buffer (CoglPixelFormat format)
     case COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8:
     case COGL_PIXEL_FORMAT_ANY:
     case COGL_PIXEL_FORMAT_YUV:
+    case COGL_PIXEL_FORMAT_Y_UV:
       g_assert_not_reached ();
 
     case COGL_PIXEL_FORMAT_A_8:
diff --git a/cogl/cogl/cogl-types.h b/cogl/cogl/cogl-types.h
index f67895dd9..25163c13f 100644
--- a/cogl/cogl/cogl-types.h
+++ b/cogl/cogl/cogl-types.h
@@ -353,7 +353,9 @@ typedef enum { /*< prefix=COGL_PIXEL_FORMAT >*/
   COGL_PIXEL_FORMAT_DEPTH_16  = (9 | COGL_DEPTH_BIT),
   COGL_PIXEL_FORMAT_DEPTH_32  = (3 | COGL_DEPTH_BIT),
 
-  COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8 = (3 | COGL_DEPTH_BIT | COGL_STENCIL_BIT)
+  COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8 = (3 | COGL_DEPTH_BIT | COGL_STENCIL_BIT),
+
+  COGL_PIXEL_FORMAT_Y_UV = 14        /* NV12 */
 } CoglPixelFormat;
 
 /**
diff --git a/src/wayland/meta-wayland-buffer.c b/src/wayland/meta-wayland-buffer.c
index b4b1e7825..b5a050815 100644
--- a/src/wayland/meta-wayland-buffer.c
+++ b/src/wayland/meta-wayland-buffer.c
@@ -181,6 +181,19 @@ shm_buffer_get_cogl_pixel_format (struct wl_shm_buffer  *shm_buffer,
       components = COGL_TEXTURE_COMPONENTS_RGB;
       break;
 #endif
+    case WL_SHM_FORMAT_NV12:
+      g_warning ("FORMAT IS NV12");
+    case WL_SHM_FORMAT_NV21:
+      g_warning ("FORMAT IS NV21");
+    case WL_SHM_FORMAT_YUV422:
+      g_warning ("FORMAT IS YUV422");
+    case WL_SHM_FORMAT_YVU422:
+      g_warning ("FORMAT IS YVU422");
+    case WL_SHM_FORMAT_YUV444:
+      g_warning ("FORMAT IS YUV444");
+    case WL_SHM_FORMAT_YVU444:
+      g_warning ("FORMAT IS YVU444");
+
     default:
       g_warn_if_reached ();
       format = COGL_PIXEL_FORMAT_ARGB_8888;
@@ -288,6 +301,10 @@ egl_image_buffer_attach (MetaWaylandBuffer *buffer,
     case EGL_TEXTURE_RGBA:
       cogl_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
       break;
+    case EGL_TEXTURE_Y_UV_WL:
+      g_warning ("Got a NV12 color format texture!!");
+      cogl_format = COGL_PIXEL_FORMAT_Y_UV;
+      break;
     default:
       g_set_error (error, G_IO_ERROR,
                    G_IO_ERROR_FAILED,