va: Implement the vaav1enc plugin

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3015>

subprojects/gst-plugins-bad/sys/va/gstvaav1enc.h

@@ -0,0 +1,34 @@
+/* GStreamer
+ *  Copyright (C) 2022 Intel Corporation
+ *     Author: He Junyan <junyan.he@intel.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 "gstvadevice.h"
+
+G_BEGIN_DECLS
+
+gboolean     gst_va_av1_enc_register                 (GstPlugin * plugin,
+                                                      GstVaDevice * device,
+                                                      GstCaps * sink_caps,
+                                                      GstCaps * src_caps,
+                                                      guint rank,
+                                                      VAEntrypoint entrypoint);
+
+G_END_DECLS

subprojects/gst-plugins-bad/sys/va/meson.build

@@ -71,6 +71,10 @@ if cc.get_id() == 'msvc'
   c_std_arg = ['c_std=c11']
 endif
 
+if libva_dep.version().version_compare('>= 1.15')
+  va_sources += 'gstvaav1enc.c'
+endif
+
 gstva = library('gstva',
   va_sources,
   c_args : gst_plugins_bad_args + extra_args,

subprojects/gst-plugins-bad/sys/va/plugin.c

@@ -28,6 +28,7 @@
 #endif
 
 #include "gstvaav1dec.h"
+#include "gstvaav1enc.h"
 #include "gstvacaps.h"
 #include "gstvacompositor.h"
 #include "gstvadeinterlace.h"
@@ -207,6 +208,15 @@ plugin_register_encoders (GstPlugin * plugin, GstVaDevice * device,
               device->render_device_path);
         }
         break;
+#if VA_CHECK_VERSION(1, 15, 0)
+      case AV1:
+        if (!gst_va_av1_enc_register (plugin, device, sinkcaps, srccaps,
+                GST_RANK_NONE, entrypoint)) {
+          GST_WARNING ("Failed to register AV1 encoder: %s",
+              device->render_device_path);
+        }
+        break;
+#endif
       default:
         GST_DEBUG ("No encoder implementation for %" GST_FOURCC_FORMAT,
             GST_FOURCC_ARGS (codec));