Xworld - Another World interpreter for Rockbox

Co-conspirators: Franklin Wei, Benjamin Brown

--------------------------------------------------------------------
This work is based on:
- Fabien Sanglard's "Fabother World" based on
- Piotr Padkowski's newRaw interpreter which was based on
- Gregory Montoir's reverse engineering of
- Eric Chahi's assembly code

--------------------------------------------------------------------
Progress:

* The plugin runs pretty nicely (with sound!) on most color targets
* Keymaps for color LCD targets are complete
* The manual entry is finished
* Grayscale/monochrome support is NOT PLANNED
  - the game looks horrible in grayscale! :p

--------------------------------------------------------------------
Notes:

* The original game strings were built-in to the executable, and
  were copyrighted and could not be used.
* This port ships with an alternate set of strings by default, but
  can load the "official" strings from a file at runtime.

--------------------------------------------------------------------
To be done (in descending order of importance):

* vertical stride compatibility                          <30% done>
* optimization                                           <10% done>

Change-Id: I3155b0d97c2ac470cb8a2040f40d4139ddcebfa5
Reviewed-on: http://gerrit.rockbox.org/1077
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>

apps/plugins/xworld/serializer.h

@@ -0,0 +1,84 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2014 Franklin Wei, Benjamin Brown
+ * Copyright (C) 2004 Gregory Montoir
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#ifndef __SERIALIZER_H__
+#define __SERIALIZER_H__
+
+#include "intern.h"
+
+#define CUR_VER 2
+
+#define VER(x) x
+
+enum EntryType {
+    SET_INT,
+    SET_ARRAY,
+    SET_PTR,
+    SET_END
+};
+
+#define SE_INT(i,sz,ver)     { SET_INT, sz, 1, i, ver, CUR_VER }
+#define SE_ARRAY(a,n,sz,ver) { SET_ARRAY, sz, n, a, ver, CUR_VER }
+#define SE_PTR(p,ver)        { SET_PTR, 0, 0, p, ver, CUR_VER }
+#define SE_END()             { SET_END, 0, 0, 0, 0, 0 }
+
+struct File;
+
+enum {
+    SES_BOOL  = 1,
+    SES_INT8  = 1,
+    SES_INT16 = 2,
+    SES_INT32 = 4
+};
+
+enum Mode {
+    SM_SAVE,
+    SM_LOAD
+};
+
+struct Entry {
+    enum EntryType type;
+    uint8_t size;
+    uint16_t n;
+    void *data;
+    uint16_t minVer;
+    uint16_t maxVer;
+};
+
+struct Serializer {
+    File *_stream;
+    enum Mode _mode;
+    uint8_t *_ptrBlock;
+    uint16_t _saveVer;
+    uint32_t _bytesCount;
+};
+
+void ser_create(struct Serializer*, File *stream, enum Mode mode, uint8_t *ptrBlock, uint16_t saveVer);
+
+void ser_saveOrLoadEntries(struct Serializer*, struct Entry *entry);
+
+void ser_saveEntries(struct Serializer*, struct Entry *entry);
+void ser_loadEntries(struct Serializer*, struct Entry *entry);
+
+void ser_saveInt(struct Serializer*, uint8_t es, void *p);
+void ser_loadInt(struct Serializer*, uint8_t es, void *p);
+#endif