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>

gst/vaapi/Makefile.am

@@ -75,6 +75,19 @@ libgstvaapi_source_h += $(libgstvaapi_glx_source_h)
 endif
 endif
 
+libgstvaapi_1_2p_source_c = \
+	gstvaapivideometa_texture.c \
+	$(NULL)
+
+libgstvaapi_1_2p_source_h = \
+	gstvaapivideometa_texture.h \
+	$(NULL)
+
+if USE_GST_API_1_2p
+libgstvaapi_source_c += $(libgstvaapi_1_2p_source_c)
+libgstvaapi_source_h += $(libgstvaapi_1_2p_source_h)
+endif
+
 libgstvaapi_1_0p_source_c = \
 	gstvaapivideobufferpool.c \
 	gstvaapivideomemory.c	\
@@ -135,6 +148,8 @@ libgstvaapi_la_LIBTOOLFLAGS = --tag=disable-static
 EXTRA_DIST = \
 	$(libgstvaapi_glx_source_c)	\
 	$(libgstvaapi_glx_source_h)	\
+	$(libgstvaapi_1_2p_source_c)	\
+	$(libgstvaapi_1_2p_source_h)	\
 	$(libgstvaapi_1_0p_source_c)	\
 	$(libgstvaapi_1_0p_source_h)	\
 	$(libgstvaapi_0_10_source_c)	\

gst/vaapi/gstvaapidecode.c

@@ -35,6 +35,9 @@
 #include "gstvaapipluginutil.h"
 #include "gstvaapivideocontext.h"
 #include "gstvaapivideobuffer.h"
+#if GST_CHECK_VERSION(1,1,0)
+#include "gstvaapivideometa_texture.h"
+#endif
 #if GST_CHECK_VERSION(1,0,0)
 #include "gstvaapivideobufferpool.h"
 #include "gstvaapivideomemory.h"
@@ -69,7 +72,10 @@ static const char gst_vaapidecode_sink_caps_str[] =
 static const char gst_vaapidecode_src_caps_str[] =
 #if GST_CHECK_VERSION(1,1,0)
     GST_VIDEO_CAPS_MAKE_WITH_FEATURES(
-        GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, GST_VIDEO_FORMATS_ALL);
+        GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, GST_VIDEO_FORMATS_ALL) ";"
+    GST_VIDEO_CAPS_MAKE_WITH_FEATURES(
+        GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
+        GST_VIDEO_FORMATS_ALL);
 #else
     GST_VAAPI_SURFACE_CAPS;
 #endif
@@ -343,6 +349,11 @@ gst_vaapidecode_push_decoded_frame(GstVideoDecoder *vdec)
                 crop_meta->height = crop_rect->height;
             }
         }
+
+#if GST_CHECK_VERSION(1,1,0)
+        if (decode->has_texture_upload_meta)
+            gst_buffer_add_texture_upload_meta(out_frame->output_buffer);
+#endif
 #else
         out_frame->output_buffer =
             gst_vaapi_video_buffer_new_with_surface_proxy(proxy);
@@ -529,6 +540,18 @@ gst_vaapidecode_decide_allocation(GstVideoDecoder *vdec, GstQuery *query)
         gst_buffer_pool_set_config(pool, config);
     }
 
+    decode->has_texture_upload_meta = FALSE;
+    if (gst_query_find_allocation_meta(query, GST_VIDEO_META_API_TYPE, NULL)) {
+        config = gst_buffer_pool_get_config(pool);
+        gst_buffer_pool_config_add_option(config,
+            GST_BUFFER_POOL_OPTION_VIDEO_META);
+        gst_buffer_pool_set_config(pool, config);
+#if GST_CHECK_VERSION(1,1,0)
+        decode->has_texture_upload_meta = gst_query_find_allocation_meta(query,
+            GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, NULL);
+#endif
+    }
+
     if (update_pool)
         gst_query_set_nth_allocation_pool(query, 0, pool, size, min, max);
     else
@@ -636,6 +659,8 @@ gst_vaapidecode_reset_full(GstVaapiDecode *decode, GstCaps *caps, gboolean hard)
 {
     GstVaapiCodec codec;
 
+    decode->has_texture_upload_meta = FALSE;
+
     /* Reset timers if hard reset was requested (e.g. seek) */
     if (hard) {
         decode->render_time_base = 0;

gst/vaapi/gstvaapidecode.h

@@ -79,6 +79,7 @@ struct _GstVaapiDecode {
     gint64              render_time_base;
     GstClockTime        last_buffer_time;
     guint               current_frame_size;
+    guint               has_texture_upload_meta : 1;
 };
 
 struct _GstVaapiDecodeClass {

gst/vaapi/gstvaapisink.c

@@ -86,7 +86,10 @@ GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapisink);
 static const char gst_vaapisink_sink_caps_str[] =
 #if GST_CHECK_VERSION(1,1,0)
     GST_VIDEO_CAPS_MAKE_WITH_FEATURES(
-        GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, GST_VIDEO_FORMATS_ALL);
+        GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE, GST_VIDEO_FORMATS_ALL) ";"
+    GST_VIDEO_CAPS_MAKE_WITH_FEATURES(
+        GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META,
+        GST_VIDEO_FORMATS_ALL);
 #else
 #if GST_CHECK_VERSION(1,0,0)
     GST_VIDEO_CAPS_MAKE(GST_VIDEO_FORMATS_ALL) "; "

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

gst/vaapi/gstvaapivideometa_texture.h

@@ -0,0 +1,37 @@
+/*
+ *  gstvaapivideometa_texture.h - 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
+ */
+
+#ifndef GST_VAAPI_VIDEO_META_TEXTURE_H
+#define GST_VAAPI_VIDEO_META_TEXTURE_H
+
+#include <gst/vaapi/gstvaapitexture.h>
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL
+gboolean
+gst_buffer_add_texture_upload_meta(GstBuffer *buffer);
+
+G_END_DECLS
+
+#endif /* GST_VAAPI_VIDEO_META_TEXTURE_H */