alphadecodebin: Add wrappers to decode VP8/VP9 alpha

This includes base class with wrappers bin that will create a static
pipeline capable of handling the VP8/VP9 alpha channel decoding
using two instances of vp8/vp9dec element each.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2199>

1 files changed, 35 insertions, 0 deletions

diff --git a/gst/codecalpha/gstvp8alphadecodebin.h b/gst/codecalpha/gstvp8alphadecodebin.h
new file mode 100644
index 000000000..1eeaf2698
--- /dev/null
+++ b/gst/codecalpha/gstvp8alphadecodebin.h
@@ -0,0 +1,35 @@
+/* GStreamer
+ * Copyright (C) <2021> Collabora Ltd.
+ *   Author: Nicolas Dufresne <nicolas.dufresne@collabora.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.
+ */
+
+#ifndef __GST_VP8_ALPHA_DECODE_BIN_H__
+#define __GST_VP8_ALPHA_DECODE_BIN_H__
+
+#include "gstalphadecodebin.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_VP8_ALPHA_DECODE_BIN (gst_vp8_alpha_decode_bin_get_type())
+G_DECLARE_FINAL_TYPE (GstVp8AlphaDecodeBin, gst_vp8_alpha_decode_bin,
+    GST, VP8_ALPHA_DECODE_BIN, GstAlphaDecodeBin);
+
+GST_ELEMENT_REGISTER_DECLARE (vp8_alpha_decode_bin);
+
+G_END_DECLS
+#endif