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# Ukraine, Lozovaya
# std freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy plp_id
T2 554000000 8MHz 3/5 NONE QAM256 32k 1/16 NONE
T2 746000000 8MHz 3/5 NONE QAM256 32k 1/16 NONE
T2 754000000 8MHz 3/5 NONE QAM256 32k 1/16 NONE
T2 778000000 8MHz 3/5 NONE QAM256 32k 1/16 NONE
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/* $Id
 *
 * generic driver helper for graphic displays
 *
 * Copyright (C) 1999, 2000 Michael Reinelt <reinelt@eunet.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux 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, or (at your option)
 * any later version.
 *
 * LCD4Linux 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: drv_generic_graphic.c,v $
 * Revision 1.14  2005/01/18 06:30:23  reinelt
 * added (C) to all copyright statements
 *
 * Revision 1.13  2005/01/09 10:53:24  reinelt
 * small type in plugin_uname fixed
 * new homepage lcd4linux.bulix.org
 *
 * Revision 1.12  2004/06/26 12:04:59  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.11  2004/06/26 09:27:21  reinelt
 *
 * added '-W' to CFLAGS
 * changed all C++ comments to C ones
 * cleaned up a lot of signed/unsigned mistakes
 *
 * Revision 1.10  2004/06/20 10:09:55  reinelt
 *
 * 'const'ified the whole source
 *
 * Revision 1.9  2004/06/09 06:40:29  reinelt
 *
 * splash screen for T6963 driver
 *
 * Revision 1.8  2004/06/08 21:46:38  reinelt
 *
 * splash screen for X11 driver (and generic graphic driver)
 *
 * Revision 1.7  2004/06/01 06:45:30  reinelt
 *
 * some Fixme's processed
 * documented some code
 *
 * Revision 1.6  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.5  2004/02/29 14:30:59  reinelt
 * icon visibility fix for generic graphics from Xavier
 *
 * Revision 1.4  2004/02/24 05:55:04  reinelt
 *
 * X11 driver ported
 *
 * Revision 1.3  2004/02/22 17:35:41  reinelt
 * some fixes for generic graphic driver and T6963
 * removed ^M from plugin_imon (Nico, are you editing under Windows?)
 *
 * Revision 1.2  2004/02/18 06:39:20  reinelt
 * T6963 driver for graphic displays finished
 *
 * Revision 1.1  2004/02/15 21:43:43  reinelt
 * T6963 driver nearly finished
 * framework for graphic displays done
 * i2c_sensors patch from Xavier
 * some more old generation files removed
 *
 */

/* 
 *
 * exported functions:
 *
 * int drv_generic_graphic_init (char *section, char *driver);
 *   initializes the generic graphic driver
 *
 * int drv_generic_graphic_draw (WIDGET *W);
 *   renders Text widget into framebuffer
 *   calls drv_generic_graphic_real_blit()
 *
 * int drv_generic_graphic_icon_draw (WIDGET *W);
 *   renders Icon widget into framebuffer
 *   calls drv_generic_graphic_real_blit()
 *
 * int drv_generic_graphic_bar_draw (WIDGET *W);
 *   renders Bar widget into framebuffer
 *   calls drv_generic_graphic_real_blit()
 *
 * int drv_generic_graphic_quit (void);
 *   closes generic graphic driver
 *
 */


#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>

#include "debug.h"
#include "cfg.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "drv.h"
#include "drv_generic_graphic.h"
#include "font_6x8.h"

#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif


static char *Section=NULL;
static char *Driver=NULL;

int DROWS, DCOLS; /* display size (pixels!) */
int LROWS, LCOLS; /* layout size  (pixels!) */
int XRES,  YRES;  /* pixels of one char cell */

unsigned char *drv_generic_graphic_FB = NULL;


/****************************************/
/*** generic Framebuffer stuff        ***/
/****************************************/

static void drv_generic_graphic_resizeFB (int rows, int cols)
{
  unsigned char *newFB;
  int row, col;
  
  /* Layout FB is large enough */
  if (rows<=LROWS && cols<=LCOLS)
    return;
  
  /* get maximum values */
  if (rows<LROWS) rows=LROWS;
  if (cols<LCOLS) cols=LCOLS;
  
  /* allocate new Layout FB */
  newFB = malloc(cols*rows*sizeof(char));
  memset (newFB, 0, rows*cols*sizeof(char));
  
  /* transfer contents */
  if (drv_generic_graphic_FB!=NULL) {
    for (row=0; row<LROWS; row++) {
      for (col=0; col<LCOLS; col++) {
	newFB[row*cols+col]=drv_generic_graphic_FB[row*LCOLS+col];
      }
    }
    free (drv_generic_graphic_FB);
  }
  drv_generic_graphic_FB = newFB;
  
  LCOLS    = cols;
  LROWS    = rows;
}


int drv_generic_graphic_clear (void)
{
  memset(drv_generic_graphic_FB, 0, DCOLS*DROWS*sizeof(*drv_generic_graphic_FB));
  drv_generic_graphic_real_blit (0, 0, DROWS, DCOLS);
  return 0;
}


/****************************************/
/*** generic text handling            ***/
/****************************************/

static void drv_generic_graphic_render (const int row, const int col, const char *txt)
{
  int c, r, x, y;
  int len = strlen(txt);
  
  /* maybe grow layout framebuffer */
  drv_generic_graphic_resizeFB (row + YRES, col + XRES * len);
  
  r = row;
  c = col;

  /* render text into layout FB */
  while (*txt != '\0') {
    for (y = 0; y < YRES; y++) {
      int mask = 1 << XRES;
      for (x = 0; x < XRES; x++) {
	mask >>= 1;
	drv_generic_graphic_FB[(r+y) * LCOLS + c + x] = Font_6x8[(int)*txt][y]&mask ? 1:0;
      }
    }
    c += XRES;
    txt++;
  }
  
  /* flush area */
  drv_generic_graphic_real_blit (row, col, YRES, XRES*len);

}


/* say hello to the user */
int drv_generic_graphic_greet (const char *msg1, const char *msg2)
{
  char *line1[] = { "* LCD4Linux " VERSION " *",
		    "LCD4Linux " VERSION,
		    "* LCD4Linux *",
		    "LCD4Linux",
		    "L4Linux",
		    NULL };
  
  char *line2[] = { "http://lcd4linux.bulix.org",
		    "lcd4linux.bulix.org",
		    NULL };
  
  int i;
  int flag = 0;
  
  unsigned int cols = DCOLS/XRES;
  unsigned int rows = DROWS/YRES;
  
  for (i = 0; line1[i]; i++) {
    if (strlen(line1[i]) <= cols) {
      drv_generic_graphic_render (YRES * 0 , XRES * (cols-strlen(line1[i]))/2, line1[i]);
      flag = 1;
      break;
    }
  }

  if (rows >= 2) {
    for (i = 0; line2[i]; i++) {
      if (strlen(line2[i]) <= cols) {
	drv_generic_graphic_render (YRES * 1, XRES * (cols-strlen(line2[i]))/2, line2[i]);
	flag = 1;
	break;
      }
    }
  }
  
  if (msg1 && rows >= 3) {
    unsigned int len = strlen(msg1);
    if ( len <= cols) {
      drv_generic_graphic_render (YRES * 2, XRES * (cols-len)/2, msg1);
      flag = 1;
    }
  }
  
  if (msg2 && rows >= 4) {
    unsigned int len = strlen(msg2);
    if ( len <= cols) {
      drv_generic_graphic_render (YRES * 3, XRES * (cols-len)/2, msg2);
      flag = 1;
    }
  }

  return flag;
}


int drv_generic_graphic_draw (WIDGET *W)
{
  WIDGET_TEXT *Text = W->data;
  drv_generic_graphic_render (YRES * W->row, XRES * W->col, Text->buffer);
  return 0;
}


/****************************************/
/*** generic icon handling            ***/
/****************************************/

int drv_generic_graphic_icon_draw (WIDGET *W)
{
  WIDGET_ICON *Icon = W->data;
  unsigned char *bitmap = Icon->bitmap+YRES*Icon->curmap;
  int row, col;
  int x, y;
  
  row = YRES*W->row;
  col = XRES*W->col;
  
  /* maybe grow layout framebuffer */
  drv_generic_graphic_resizeFB (row+YRES, col+XRES);
  
  /* render icon */
  for (y=0; y<YRES; y++) {
    int mask=1<<XRES;
    for (x=0; x<XRES; x++) {
      int i = (row+y)*LCOLS+col+x;
      mask >>= 1;
      if (Icon->visible) {
	drv_generic_graphic_FB[i] = bitmap[y]&mask ? 1 : 0;
      } else {
	drv_generic_graphic_FB[i] = 0;
      }
    }
  }

  /* flush area */
  drv_generic_graphic_real_blit (row, col, YRES, XRES);

  return 0;
  
}


/****************************************/
/*** generic bar handling             ***/
/****************************************/

int drv_generic_graphic_bar_draw (WIDGET *W)
{
  WIDGET_BAR *Bar = W->data;
  int row, col, len, res, rev, max, val1, val2;
  int x, y;
  DIRECTION dir;
  
  row = YRES*W->row;
  col = XRES*W->col;
  dir = Bar->direction;
  len = Bar->length;
  
  /* maybe grow layout framebuffer */
  if (dir & (DIR_EAST|DIR_WEST)) {
    drv_generic_graphic_resizeFB (row+YRES, col+XRES*len);
  } else {
    drv_generic_graphic_resizeFB (row+YRES*len, col+XRES);
  }
  
  res  = dir & (DIR_EAST|DIR_WEST)?XRES:YRES;
  max  = len * res;
  val1 = Bar->val1 * (double)(max);
  val2 = Bar->val2 * (double)(max);
  
  if      (val1<1)   val1=1;
  else if (val1>max) val1=max;
  
  if      (val2<1)   val2=1;
  else if (val2>max) val2=max;
  
  rev=0;
  
  switch (dir) {
  case DIR_WEST:
    val1=max-val1;
    val2=max-val2;
    rev=1;
    
  case DIR_EAST:
    for (y=0; y<YRES; y++) {
      int val=y<YRES/2 ? val1 : val2;
      for (x=0; x<max; x++) {
	drv_generic_graphic_FB[(row+y)*LCOLS+col+x] = x<val ? !rev : rev;
      }
    }
    break;
    
  case DIR_SOUTH:
    val1=max-val1;
    val2=max-val2;
    rev=1;
    
  case DIR_NORTH:
    for (y=0; y<max; y++) {
      for (x=0; x<XRES; x++) {
	int val=x<XRES/2 ? val1 : val2;
  	drv_generic_graphic_FB[(row+y)*LCOLS+col+x] = y<val ? !rev : rev;
      }
    }
    break;
  }
  
  /* flush area */
  if (dir & (DIR_EAST|DIR_WEST)) {
    drv_generic_graphic_real_blit (row, col, YRES, XRES*len);
  } else {
    drv_generic_graphic_real_blit (row, col, YRES*len, XRES);
  }

  return 0;
}


/****************************************/
/*** generic init/quit                ***/
/****************************************/

int drv_generic_graphic_init (const char *section, const char *driver)
{
  Section = (char*)section;
  Driver  = (char*)driver;
  
  /* init layout framebuffer */
  LROWS = 0;
  LCOLS = 0;
  drv_generic_graphic_FB=NULL;
  drv_generic_graphic_resizeFB (DROWS, DCOLS);
  
  /* sanity check */
  if (drv_generic_graphic_FB==NULL) {
    error ("%s: framebuffer could not be allocated: malloc() failed", Driver);
    return -1;
  }
  
  return 0;
}


int drv_generic_graphic_quit (void) 
{
  if (drv_generic_graphic_FB) {
    free(drv_generic_graphic_FB);
    drv_generic_graphic_FB=NULL;
  }
  
  widget_unregister();  
  return (0);
}