1 files changed, 409 insertions, 0 deletions

diff --git a/apps/plugins/xrick/system/sysvid_rockbox.c b/apps/plugins/xrick/system/sysvid_rockbox.c
new file mode 100644
index 0000000000..e93522f6c9
--- /dev/null
+++ b/apps/plugins/xrick/system/sysvid_rockbox.c
@@ -0,0 +1,409 @@
+ /***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Port of xrick, a Rick Dangerous clone, to Rockbox.
+ * See http://www.bigorno.net/xrick/
+ *
+ * Copyright (C) 2008-2014 Pierluigi Vicinanza
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#include "xrick/system/system.h"
+
+#include "xrick/config.h"
+#include "xrick/draw.h"
+#include "xrick/game.h"
+#include "xrick/data/img.h"
+#include "xrick/debug.h"
+
+#include "plugin.h"
+#include "lib/helper.h"
+
+/*
+ * Global variables
+ */
+U8 *sysvid_fb = NULL; /* xRick generic 320x200 8bpp frame buffer */
+
+/*
+ * Local variables
+ */
+static fb_data palette[256] IBSS_ATTR;
+static bool isVideoInitialised = false;
+#ifndef HAVE_LCD_COLOR
+#  include "lib/grey.h"
+GREY_INFO_STRUCT_IRAM
+static unsigned char greybuffer[LCD_HEIGHT * LCD_WIDTH] IBSS_ATTR; /* off screen buffer */
+static unsigned char *gbuf;
+#  if LCD_PIXELFORMAT == HORIZONTAL_PACKING
+enum { GREYBUFSIZE = (((LCD_WIDTH+7)/8)*LCD_HEIGHT*16+200) };
+#  else
+enum { GREYBUFSIZE = (LCD_WIDTH*((LCD_HEIGHT+7)/8)*16+200) };
+#  endif
+#endif /* ndef HAVE_LCD_COLOR */
+
+#ifdef HAVE_LCD_COLOR
+static fb_data *lcd_fb = NULL;
+#endif
+
+#if (LCD_HEIGHT < SYSVID_HEIGHT)
+enum { ROW_RESIZE_STEP = (LCD_HEIGHT << 16) / SYSVID_HEIGHT };
+
+static bool rowsToSkip[SYSVID_HEIGHT];
+
+/*
+ *
+ */
+static void calculateRowsToSkip(void)
+{
+    U32 currentRow, prevResizedRow;
+
+    prevResizedRow = 0;
+    rowsToSkip[0] = false;
+
+    for (currentRow = 1; currentRow < SYSVID_HEIGHT; ++currentRow)
+    {
+        U32 resizedRow = (currentRow * ROW_RESIZE_STEP) >> 16;
+        if (resizedRow == prevResizedRow)
+        {
+            rowsToSkip[currentRow] = true;
+        }
+        prevResizedRow = resizedRow;
+    }
+}
+#endif /* (LCD_HEIGHT < SYSVID_HEIGHT) */
+
+#if (LCD_WIDTH < SYSVID_WIDTH)
+enum { COLUMN_RESIZE_STEP = (LCD_WIDTH << 16) / (SYSVID_WIDTH + (DRAW_XYMAP_SCRLEFT*2)) };
+
+static bool columnsToSkip[SYSVID_WIDTH + (DRAW_XYMAP_SCRLEFT*2)];
+
+/*
+ *
+ */
+static void calculateColumnsToSkip(void)
+{
+    U32 currentColumn, prevResizedColumn;
+
+    prevResizedColumn = 0;
+    columnsToSkip[0] = false;
+
+    for (currentColumn = 1; currentColumn < (SYSVID_WIDTH + (DRAW_XYMAP_SCRLEFT*2)); ++currentColumn)
+    {
+        U32 resizedColumn = (currentColumn * COLUMN_RESIZE_STEP) >> 16;
+        if (resizedColumn == prevResizedColumn)
+        {
+            columnsToSkip[currentColumn] = true;
+        }
+        prevResizedColumn = resizedColumn;
+    }
+}
+#endif /* (LCD_WIDTH < SYSVID_WIDTH) */
+
+/*
+ *
+ */
+void sysvid_setPalette(img_color_t *pal, U16 n)
+{
+    U16 i;
+
+    for (i = 0; i < n; i++)
+    {
+#ifdef HAVE_LCD_COLOR
+#if (LCD_PIXELFORMAT == RGB888) || (LCD_PIXELFORMAT == XRGB8888)
+        unsigned long x =  LCD_RGBPACK(pal[i].r, pal[i].g, pal[i].b);
+        palette[i] = FB_SCALARPACK(x);
+#else
+        palette[i] = LCD_RGBPACK(pal[i].r, pal[i].g, pal[i].b);
+#endif
+#else
+        palette[i] = ((3 * pal[i].r) + (6 * pal[i].g) + pal[i].b) / 10;
+#endif
+    }
+}
+
+/*
+ *
+ */
+void sysvid_setGamePalette()
+{
+    sysvid_setPalette(game_colors, game_color_count);
+}
+
+/*
+ * Update screen
+ */
+void sysvid_update(const rect_t *rects)
+{
+    unsigned sourceRow, sourceLastRow;
+    unsigned sourceColumn, sourceLastColumn;
+    unsigned resizedRow, resizedColumn;
+    unsigned resizedWidth, resizedHeight;
+    unsigned x, y;
+    U8 *sourceBuf, *sourceTemp;
+    fb_data *destBuf, *destTemp;
+
+    if (!rects)
+    {
+        return;
+    }
+
+    while (rects)
+    {
+        sourceRow = rects->y;
+        sourceLastRow = sourceRow + rects->height;
+        sourceColumn = rects->x;
+        sourceLastColumn = sourceColumn + rects->width;
+
+#if (LCD_WIDTH < SYSVID_WIDTH)
+        /* skip black borders */
+        if (sourceColumn < -DRAW_XYMAP_SCRLEFT)
+        {
+            sourceColumn = -DRAW_XYMAP_SCRLEFT;
+        }
+        if (sourceLastColumn > (SYSVID_WIDTH + DRAW_XYMAP_SCRLEFT))
+        {
+            sourceLastColumn = SYSVID_WIDTH + DRAW_XYMAP_SCRLEFT;
+        }
+
+        /* skip unwanted columns */
+        while (columnsToSkip[sourceColumn + DRAW_XYMAP_SCRLEFT] /* && sourceColumn < (SYSVID_WIDTH + DRAW_XYMAP_SCRLEFT) */)
+        {
+            ++sourceColumn;
+        }
+
+        resizedColumn = ((sourceColumn + DRAW_XYMAP_SCRLEFT) * COLUMN_RESIZE_STEP) >> 16;
+        resizedWidth = 0;
+#else
+        resizedColumn = sourceColumn;
+        resizedWidth = rects->width;
+#endif /* (LCD_WIDTH < SYSVID_WIDTH) */
+
+#if (LCD_HEIGHT < SYSVID_HEIGHT)
+        /* skip unwanted rows */
+        while (rowsToSkip[sourceRow] /* && sourceRow < SYSVID_HEIGHT */)
+        {
+            ++sourceRow;
+        }
+
+        resizedRow = (sourceRow * ROW_RESIZE_STEP) >> 16;
+        resizedHeight = 0;
+#else
+        resizedRow = sourceRow;
+        resizedHeight = rects->height;
+#endif /* (LCD_HEIGHT < SYSVID_HEIGHT) */
+
+        sourceBuf = sysvid_fb;
+        sourceBuf += sourceColumn + sourceRow * SYSVID_WIDTH;
+
+#ifdef HAVE_LCD_COLOR
+        if(!lcd_fb)
+        {
+            struct viewport *vp_main = rb->lcd_set_viewport(NULL);
+            lcd_fb = vp_main->buffer->fb_ptr;
+        }
+        destBuf = lcd_fb;
+#else
+        destBuf = (fb_data*) greybuffer;
+#endif /* HAVE_LCD_COLOR */
+        destBuf += resizedColumn + resizedRow * LCD_WIDTH;
+
+#if (LCD_WIDTH < SYSVID_WIDTH)
+        sourceColumn += DRAW_XYMAP_SCRLEFT;
+        sourceLastColumn += DRAW_XYMAP_SCRLEFT;
+#endif /* (LCD_WIDTH < SYSVID_WIDTH) */
+
+        for (y = sourceRow; y < sourceLastRow; ++y)
+        {
+#if (LCD_HEIGHT < SYSVID_HEIGHT)
+            if (rowsToSkip[y])
+            {
+                sourceBuf += SYSVID_WIDTH;
+                continue;
+            }
+
+            ++resizedHeight;
+#endif /* (LCD_HEIGHT < SYSVID_HEIGHT) */
+
+            sourceTemp = sourceBuf;
+            destTemp = destBuf;
+            for (x = sourceColumn; x < sourceLastColumn; ++x)
+            {
+#if (LCD_WIDTH < SYSVID_WIDTH)
+                if (columnsToSkip[x])
+                {
+                    ++sourceTemp;
+                    continue;
+                }
+
+                if (y == sourceRow)
+                {
+                    ++resizedWidth;
+                }
+#endif /* (LCD_WIDTH < SYSVID_WIDTH) */
+
+                *destTemp = palette[*sourceTemp];
+
+                ++sourceTemp;
+                ++destTemp;
+            }
+
+            sourceBuf += SYSVID_WIDTH;
+            destBuf += LCD_WIDTH;
+        }
+
+#ifdef HAVE_LCD_COLOR
+        IFDEBUG_VIDEO2(
+            for (y = resizedRow; y < resizedRow + resizedHeight; ++y)
+            {
+                destBuf = lcd_fb + resizedColumn + y * LCD_WIDTH;
+                *destBuf = palette[0x01];
+                *(destBuf + resizedWidth - 1) = palette[0x01];
+            }
+
+            for (x = resizedColumn; x < resizedColumn + resizedWidth; ++x)
+            {
+                destBuf = rb->lcd_fb + x + resizedRow * LCD_WIDTH;
+                *destBuf = palette[0x01];
+                *(destBuf + (resizedHeight - 1) * LCD_WIDTH) = palette[0x01];
+            }
+        );
+
+        rb->lcd_update_rect(resizedColumn, resizedRow, resizedWidth, resizedHeight);
+#else
+        grey_ub_gray_bitmap_part(greybuffer, resizedColumn, resizedRow, LCD_WIDTH, resizedColumn, resizedRow, resizedWidth, resizedHeight);
+#endif /* HAVE_LCD_COLOR */
+
+       rects = rects->next;
+    }
+}
+
+/*
+ * Clear screen
+ * (077C)
+ */
+void sysvid_clear(void)
+{
+    rb->memset(sysvid_fb, 0, sizeof(U8) * SYSVID_WIDTH * SYSVID_HEIGHT);
+}
+
+/*
+ * Initialise video
+ */
+bool sysvid_init()
+{
+    bool success;
+
+    if (isVideoInitialised)
+    {
+        return true;
+    }
+
+    IFDEBUG_VIDEO(sys_printf("xrick/video: start\n"););
+
+    success = false;
+    do
+    {
+        /* allocate xRick generic frame buffer into memory */
+        sysvid_fb = sysmem_push(sizeof(U8) * SYSVID_WIDTH * SYSVID_HEIGHT);
+        if (!sysvid_fb)
+        {
+            sys_error("(video) unable to allocate frame buffer");
+            break;
+        }
+
+#ifndef HAVE_LCD_COLOR
+        gbuf = sysmem_push(GREYBUFSIZE);
+        if (!gbuf)
+        {
+            sys_error("(video) unable to allocate buffer for greyscale functions");
+            break;
+        }
+
+        if (!grey_init(gbuf, GREYBUFSIZE, GREY_ON_COP, LCD_WIDTH, LCD_HEIGHT, NULL))
+        {
+            sys_error("(video) not enough memory to initialise greyscale functions");
+            break;
+        }
+#endif /* ndef HAVE_LCD_COLOR */
+
+        success = true;
+    } while (false);
+
+    if (!success)
+    {
+#ifndef HAVE_LCD_COLOR
+        sysmem_pop(gbuf);
+#endif
+        sysmem_pop(sysvid_fb);
+        return false;
+    }
+
+#if (LCD_HEIGHT < SYSVID_HEIGHT)
+    calculateRowsToSkip();
+#endif
+#if (LCD_WIDTH < SYSVID_WIDTH)
+    calculateColumnsToSkip();
+#endif
+
+#if LCD_DEPTH > 1
+    rb->lcd_set_backdrop(NULL);
+#endif
+    /* Turn off backlight timeout */
+    backlight_ignore_timeout();
+
+    rb->lcd_set_foreground(LCD_WHITE);
+    rb->lcd_set_background(LCD_BLACK);
+    rb->lcd_clear_display();
+
+#ifdef HAVE_LCD_COLOR
+    rb->lcd_update();
+#else
+    /* switch on greyscale overlay */
+    grey_show(true);
+#endif /* HAVE_LCD_COLOR */
+
+    isVideoInitialised = true;
+    IFDEBUG_VIDEO(sys_printf("xrick/video: ready\n"););
+    return true;
+}
+
+/*
+ * Shutdown video
+ */
+void sysvid_shutdown(void)
+{
+    if (!isVideoInitialised)
+    {
+        return;
+    }
+
+#ifndef HAVE_LCD_COLOR
+    grey_show(false);
+    grey_release();
+
+    sysmem_pop(gbuf);
+#endif /* ndef HAVE_LCD_COLOR */
+    sysmem_pop(sysvid_fb);
+
+    /* Turn on backlight timeout (revert to settings) */
+    backlight_use_settings();
+
+    isVideoInitialised = false;
+    IFDEBUG_VIDEO(sys_printf("xrick/video: stop\n"););
+}
+
+/* eof */