More type fixes

Param ids and IO ids are now simple enums.
Move some type info in one place, delete some type-info files
Fix type debug
Make audio layout an enum
Mark more enums as enums in types so they show us with their names in
the debug.

spa/include/spa/param/buffers.h

@@ -1,42 +0,0 @@
-/* Simple Plugin API
- * Copyright (C) 2016 Wim Taymans <wim.taymans@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.
- */
-
-#ifndef __SPA_PARAM_BUFFERS_H__
-#define __SPA_PARAM_BUFFERS_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <spa/utils/defs.h>
-
-/** properties for SPA_ID_OBJECT_ParamBuffers */
-enum spa_param_buffers {
-	SPA_PARAM_BUFFERS_buffers,	/**< number of buffers */
-	SPA_PARAM_BUFFERS_blocks,	/**< number of data blocks per buffer */
-	SPA_PARAM_BUFFERS_size,		/**< size of a data block memory */
-	SPA_PARAM_BUFFERS_stride,	/**< stride of data block memory */
-	SPA_PARAM_BUFFERS_align,	/**< alignment of data block memory */
-};
-
-#ifdef __cplusplus
-}  /* extern "C" */
-#endif
-
-#endif /* __SPA_PARAM_BUFFERS_H__ */