WIP: plugin: Add VA memory GL-based importer

lib/gst/plugin/importers/gstclappervaglimporter.c

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstclappervaglimporter.h"
+#include "gst/plugin/gstgdkformats.h"
+
+#include <gst/va/gstva.h>
+
+#define GST_CAT_DEFAULT gst_clapper_va_gl_importer_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+#define parent_class gst_clapper_va_gl_importer_parent_class
+GST_CLAPPER_IMPORTER_DEFINE (GstClapperVAGLImporter, gst_clapper_va_gl_importer, GST_TYPE_CLAPPER_GL_BASE_IMPORTER);
+
+static GdkTexture *
+gst_clapper_va_gl_importer_generate_texture (GstClapperImporter *importer,
+    GstBuffer *buffer, GstVideoInfo *v_info)
+{
+  return NULL;
+}
+
+static void
+gst_clapper_va_gl_importer_init (GstClapperVAGLImporter *self)
+{
+}
+
+static void
+gst_clapper_va_gl_importer_class_init (GstClapperVAGLImporterClass *klass)
+{
+  GstClapperImporterClass *importer_class = (GstClapperImporterClass *) klass;
+
+  GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "clappervaglimporter", 0,
+      "Clapper VA GL Importer");
+
+  importer_class->generate_texture = gst_clapper_va_gl_importer_generate_texture;
+}
+
+GstClapperImporter *
+make_importer (void)
+{
+  return g_object_new (GST_TYPE_CLAPPER_VA_GL_IMPORTER, NULL);
+}
+
+GstCaps *
+make_caps (GstRank *rank, GStrv *context_types)
+{
+  GstCaps *caps, *tmp;
+
+  *rank = GST_RANK_PRIMARY;
+
+  tmp = gst_caps_from_string (
+      GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_VA,
+          "{ " GST_GDK_GL_TEXTURE_FORMATS " }"));
+
+  caps = gst_caps_copy (tmp);
+  gst_caps_set_features_simple (caps, gst_caps_features_new (
+      GST_CAPS_FEATURE_MEMORY_VA,
+      GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION, NULL));
+
+  gst_caps_append (caps, tmp);
+
+  return caps;
+}

lib/gst/plugin/importers/gstclappervaglimporter.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include "gstclapperglbaseimporter.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_CLAPPER_VA_GL_IMPORTER (gst_clapper_va_gl_importer_get_type())
+G_DECLARE_FINAL_TYPE (GstClapperVAGLImporter, gst_clapper_va_gl_importer, GST, CLAPPER_VA_GL_IMPORTER, GstClapperGLBaseImporter)
+
+#define GST_CLAPPER_VA_GL_IMPORTER_CAST(obj)        ((GstClapperVAGLImporter *)(obj))
+
+struct _GstClapperVAGLImporter
+{
+  GstClapperGLBaseImporter parent;
+};
+
+G_END_DECLS

lib/gst/plugin/importers/meson.build

@@ -3,10 +3,12 @@ gst_clapper_gl_base_importer_dep = dependency('', required: false)
 plugin_needs_gl_base = (
   not get_option('glimporter').disabled()
   or not get_option('gluploader').disabled()
+  or not get_option('vaglimporter').disabled()
 )
 plugin_gl_support_required = (
   get_option('glimporter').enabled()
   or get_option('gluploader').enabled()
+  or get_option('vaglimporter').enabled()
 )
 
 gst_plugin_gl_deps = [gstgl_dep, gstglproto_dep]
@@ -118,3 +120,38 @@ if build_rawimporter
     install_dir: gst_clapper_importers_libdir,
   )
 endif
+
+gst_va_dep = dependency('gstreamer-va-1.0',
+  version: gst_req,
+  required: false,
+)
+
+gst_clapper_va_gl_importer_deps = [
+  gst_clapper_gl_base_importer_dep,
+  gst_va_dep,
+]
+
+foreach dep : gst_clapper_va_gl_importer_deps
+  if not dep.found()
+    if get_option('vaglimporter').enabled()
+      error('VA GL-based importer was enabled, but required dependencies were not found')
+    endif
+  endif
+endforeach
+
+build_vaglimporter = (
+  not get_option('vaglimporter').disabled()
+  and gst_clapper_gl_base_importer_dep.found()
+)
+
+if build_vaglimporter
+  library(
+    'gstclappervaglimporter',
+    'gstclappervaglimporter.c',
+    dependencies: gst_clapper_va_gl_importer_deps,
+    include_directories: configinc,
+    c_args: gst_clapper_plugin_args,
+    install: true,
+    install_dir: gst_clapper_importers_libdir,
+  )
+endif

meson_options.txt

@@ -14,10 +14,10 @@ option('gst-plugin',
   description: 'Build GStreamer plugin (includes GTK video sink element)'
 )
 
-option('rawimporter',
+option('vaglimporter',
   type: 'feature',
   value: 'auto',
-  description: 'Build RAW system memory importer for clappersink'
+  description: 'Build VA memory GL-based importer for clappersink'
 )
 option('glimporter',
   type: 'feature',
@@ -29,6 +29,11 @@ option('gluploader',
   value: 'auto',
   description: 'Build GL uploader for clappersink'
 )
+option('rawimporter',
+  type: 'feature',
+  value: 'auto',
+  description: 'Build RAW system memory importer for clappersink'
+)
 
 option('devel-checks',
   type: 'boolean',