FS#10911 - Plugins: Fractals (formerly Mandelbrot)

- Rename the mandelbrot plugin to fractals
- Update manual accordingly
- Separate plugin's functionality into separate files
- Lay the ground for having fractals sets other than the Mandelbrot set.
  For that the following will need to be implemented:
  - Create a new file for the new fracral set
  - Provide key mapping to switch between sets


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24230 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/fractals/mandelbrot_set.h

@@ -0,0 +1,60 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Tomer Shalev
+ *
+ * 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 _MANDELBROT_SET_H
+#define _MANDELBROT_SET_H
+
+#include "fractal_sets.h"
+
+/* CPU stuff */
+#if CONFIG_CPU == SH7034
+#include "cpu_sh7043.h"
+#elif defined CPU_COLDFIRE
+#include "cpu_coldfire.h"
+#elif defined CPU_ARM
+#include "cpu_arm.h"
+#endif
+
+#if CONFIG_CPU == SH7034
+#define MULS16_ASR10(a, b) muls16_asr10(a, b)
+#define MULS32_ASR26(a, b) muls32_asr26(a, b)
+#elif defined CPU_COLDFIRE
+/* Needs the EMAC initialised to fractional mode w/o rounding and saturation */
+#define MULS32_INIT() coldfire_set_macsr(EMAC_FRACTIONAL)
+#define MULS16_ASR10(a, b) muls16_asr10(a, b)
+#define MULS32_ASR26(a, b) muls32_asr26(a, b)
+#elif defined CPU_ARM
+#define MULS32_ASR26(a, b) muls32_asr26(a, b)
+#endif
+
+/* default macros */
+#ifndef MULS16_ASR10
+#define MULS16_ASR10(a, b) ((short)(((long)(a) * (long)(b)) >> 10))
+#endif
+#ifndef MULS32_ASR26
+#define MULS32_ASR26(a, b) ((long)(((long long)(a) * (long long)(b)) >> 26))
+#endif
+#ifndef MULS32_INIT
+#define MULS32_INIT()
+#endif
+
+extern struct fractal_ops mandelbrot_ops;
+
+#endif