plugins: add support for GstVideoGLTextureUploadMeta.

If the allocation meta GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE is
requested, and more specifically under a GLX configuration, then add
the GstVideoGLTextureUploadMeta to the output buffer.

https://bugzilla.gnome.org/show_bug.cgi?id=703236

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/gst/vaapi/gstvaapivideometa_texture.c b/gst/vaapi/gstvaapivideometa_texture.c
new file mode 100644
index 00000000..17b19a00
--- /dev/null
+++ b/gst/vaapi/gstvaapivideometa_texture.c
@@ -0,0 +1,92 @@
+/*
+ *  gstvaapivideometa_texture.c - GStreamer/VA video meta (GLTextureUpload)
+ *
+ *  Copyright (C) 2010-2011 Splitted-Desktop Systems
+ *  Copyright (C) 2011-2013 Intel Corporation
+ *  Copyright (C) 2013 Igalia
+ *
+ *  This library 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 library 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 library; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301 USA
+ */
+
+#include "gst/vaapi/sysdeps.h"
+#include "gstvaapivideometa.h"
+#include "gstvaapivideometa_texture.h"
+#include "gstvaapipluginutil.h"
+
+#if GST_CHECK_VERSION(1,1,0) && USE_GLX
+static void
+gst_vaapi_texure_upload_free(gpointer data)
+{
+    GstVaapiTexture * const texture = data;
+
+    if (texture)
+        gst_vaapi_texture_unref(texture);
+}
+
+static gboolean
+gst_vaapi_texture_upload(GstVideoGLTextureUploadMeta *meta, guint texture_id[4])
+{
+    GstVaapiVideoMeta * const vmeta =
+        gst_buffer_get_vaapi_video_meta(meta->buffer);
+    GstVaapiTexture *texture = meta->user_data;
+    GstVaapiSurface * const surface = gst_vaapi_video_meta_get_surface(vmeta);
+    GstVaapiDisplay * const dpy =
+        gst_vaapi_object_get_display(GST_VAAPI_OBJECT(surface));
+
+    if (gst_vaapi_display_get_display_type(dpy) != GST_VAAPI_DISPLAY_TYPE_GLX)
+        return FALSE;
+
+    if (texture) {
+        GstVaapiDisplay * const tex_dpy =
+            gst_vaapi_object_get_display(GST_VAAPI_OBJECT(texture));
+        if (tex_dpy != dpy)
+            gst_vaapi_texture_replace(&texture, NULL);
+    }
+
+    if (!texture) {
+        /* FIXME: should we assume target? */
+        texture = gst_vaapi_texture_new_with_texture(dpy, texture_id[0],
+            GL_TEXTURE_2D, GL_RGBA);
+        meta->user_data = texture;
+    }
+
+    if (!gst_vaapi_apply_composition(surface, meta->buffer))
+        GST_WARNING("could not update subtitles");
+
+    return gst_vaapi_texture_put_surface(texture, surface,
+        gst_vaapi_video_meta_get_render_flags(vmeta));
+}
+#endif
+
+#if GST_CHECK_VERSION(1,1,0)
+gboolean
+gst_buffer_add_texture_upload_meta(GstBuffer *buffer)
+{
+    GstVideoGLTextureUploadMeta *meta = NULL;
+    GstVideoGLTextureType tex_type[] = { GST_VIDEO_GL_TEXTURE_TYPE_RGBA };
+
+    if (!buffer)
+        return FALSE;
+
+#if USE_GLX
+    meta = gst_buffer_add_video_gl_texture_upload_meta(buffer,
+        GST_VIDEO_GL_TEXTURE_ORIENTATION_X_NORMAL_Y_NORMAL,
+        1, tex_type, gst_vaapi_texture_upload,
+        NULL, NULL, gst_vaapi_texure_upload_free);
+#endif
+    return meta != NULL;
+}
+#endif