Code for drawing the VNC screen, does not work

platform/gtk/vnc-draw.c

@@ -0,0 +1,210 @@
+/*
+ * Copyright (c) 2003, Adam Dunkels.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of the Contiki VNC client
+ *
+ * $Id: vnc-draw.c,v 1.1 2006/06/17 23:07:15 adamdunkels Exp $
+ *
+ */
+
+
+
+#include "vnc-draw.h"
+
+#include "contiki-conf.h"
+
+#ifndef VNC_CONF_VIEWPORT_WIDTH
+#define VNC_CONF_VIEWPORT_WIDTH  (32*8)
+#endif
+
+#ifndef VNC_CONF_VIEWPORT_HEIGHT
+#define VNC_CONF_VIEWPORT_HEIGHT (16*8)
+#endif
+
+#ifndef VNC_CONF_REFRESH_ROWS
+#define VNC_CONF_REFRESH_ROWS    8
+#endif
+
+
+static unsigned char conv[256];
+
+static unsigned char oratab[8] =
+  { 0x80, 0x40, 0x20, 0x10,
+    0x08, 0x04, 0x02, 0x01 };
+static unsigned char andtab[8] =
+  { 0x7f, 0xbf, 0xdf, 0xef,
+    0xf7, 0xfb, 0xfd, 0xfe };
+
+static u8_t *bitmapptrtab[VNC_CONF_VIEWPORT_HEIGHT];
+
+static unsigned short viewport_x,
+  viewport_y, viewport_w, viewport_h;
+
+u8_t vnc_draw_bitmap[(VNC_CONF_VIEWPORT_WIDTH / 8) *
+		     VNC_CONF_VIEWPORT_HEIGHT];
+
+
+
+u16_t vnc_draw_x;
+u16_t vnc_draw_y;
+u8_t *vnc_draw_dataptr;
+u8_t *vnc_draw_bitmapptr;
+u16_t vnc_draw_datalen;
+
+/*-----------------------------------------------------------------------------------*/
+void
+vnc_draw_pixel(u16_t x, u8_t y, u8_t c)
+{
+  u8_t o, a;
+  
+  vnc_draw_bitmapptr = bitmapptrtab[y] + (x & 0x1f8);
+  
+  if(c) {
+    o = oratab[x & 7];
+    *vnc_draw_bitmapptr = *vnc_draw_bitmapptr | o;
+  } else {
+    a = andtab[x & 7];
+    *vnc_draw_bitmapptr = *vnc_draw_bitmapptr & a;
+  }
+}
+/*-----------------------------------------------------------------------------------*/
+void
+vnc_draw_pixelline(u16_t x, u16_t y, u8_t *data, u16_t datalen)
+{
+  u8_t o, a;
+  register u8_t *bitmapptr;
+  
+  vnc_draw_x = x - viewport_x;
+  vnc_draw_y = y - viewport_y;
+
+  /*  if(vnc_draw_y & 1) {
+    return;
+  } else {
+    vnc_draw_y /= 2;
+    }*/
+
+  
+  
+  if(vnc_draw_y >= VNC_CONF_VIEWPORT_HEIGHT ||
+     vnc_draw_x >= VNC_CONF_VIEWPORT_WIDTH) {
+    return;
+  }
+
+  vnc_draw_datalen = datalen;
+  
+  if(vnc_draw_datalen + vnc_draw_x >= VNC_CONF_VIEWPORT_WIDTH) {
+    vnc_draw_datalen = VNC_CONF_VIEWPORT_WIDTH - vnc_draw_x;
+    if(vnc_draw_datalen == 0) {
+      return;
+    }
+  }
+  
+  vnc_draw_dataptr = data;
+
+  /*  vnc_draw_bitmapptr = bitmaptab[vnc_draw_y] +
+      (vnc_draw_x & 0x1f8);*/
+
+  for(; vnc_draw_datalen > 0; --vnc_draw_datalen) {
+    /*    vnc_draw_pixel(vnc_draw_x, vnc_draw_y,
+	  conv[*vnc_draw_dataptr]);*/
+
+    bitmapptr = bitmapptrtab[vnc_draw_y] + (vnc_draw_x & 0x1f8);
+    
+    if(conv[*vnc_draw_dataptr]) {
+      o = oratab[vnc_draw_x & 7];
+      *bitmapptr = *bitmapptr | o;
+    } else {
+      a = andtab[vnc_draw_x & 7];
+      *bitmapptr = *bitmapptr & a;
+    }
+    ++vnc_draw_dataptr;
+    ++vnc_draw_x;
+  }
+}
+/*-----------------------------------------------------------------------------------*/
+void
+vnc_draw_init(void)
+{
+  unsigned int tmp;
+  unsigned int i;
+  unsigned short ptr;
+
+
+  /* Create color conversion table. */
+  for(i = 0; i < 256; ++i) {
+    if(((i & 0xc0) > 0xc0) ||
+       ((i & 0x38) > 0x18) ||
+       ((i & 0x07) > 0x03)) {
+      conv[i] = 0;
+    } else {
+      conv[i] = 1;
+    }
+  }
+
+  memset(vnc_draw_bitmap, 0, sizeof(vnc_draw_bitmap));
+  
+  for(i = 0; i < VNC_CONF_VIEWPORT_HEIGHT; ++i) {
+    bitmapptrtab[i] = (u8_t *)((u8_t *)vnc_draw_bitmap +
+			       ((i & 0xfff8)/8) * VNC_CONF_VIEWPORT_WIDTH +
+			       (i & 7));
+  }
+
+  viewport_x = 0;
+  viewport_y = 0;
+
+  viewport_w = VNC_CONF_VIEWPORT_WIDTH;
+  viewport_h = VNC_CONF_VIEWPORT_HEIGHT;
+  
+  return;
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+vnc_draw_viewport_x(void)
+{
+  return viewport_x;
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+vnc_draw_viewport_y(void)
+{
+  return viewport_y;
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+vnc_draw_viewport_w(void)
+{
+  return viewport_w;
+}
+/*-----------------------------------------------------------------------------------*/
+u16_t
+vnc_draw_viewport_h(void)
+{
+  return viewport_h;
+}
+/*-----------------------------------------------------------------------------------*/