mangavalk/lcdproc
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Updated the framebuffer code in _flush()

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This commit is contained in:
wayn3
2004-02-26 02:32:57 +00:00
parent b9433140bf
commit 197b9fd70b
1 changed files with 40 additions and 48 deletions
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server/drivers/CFontzPacket.c
+40 -48
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@@ -11,6 +11,10 @@
* It support the CrystalFontz 633 USB/Serial and the 631 USB
* (get yours from http://crystalfontz.com)
*
* Applicable Data Sheets
* http://www.crystalfontz.com/products/631/CFA-631_v1.0.pdf
* http://www.crystalfontz.com/products/633/CFA_633_0_6.PDF
*
* Copyright (C) 2002 David GLAUDE
*
* This program is free software; you can redistribute it and/or modify
@@ -28,7 +32,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
*/
/*
* Driver status
* 04/04/2002: Working driver
@@ -295,12 +298,15 @@ else
/* Set display-specific stuff.. */
if (reboot) {
debug(RPT_INFO, "CFontz633: reboot requested\n" );
CFontz633_reboot ();
reboot = 0;
sleep (1);
debug(RPT_INFO, "CFontz633: reboot done" );
}
CFontz633_hidecursor ();
CFontz633_set_contrast (drvthis, contrast);
CFontz633_no_live_report ();
@@ -357,9 +363,8 @@ MODULE_EXPORT void
CFontz633_flush (Driver * drvthis)
{
int i,j;
int count_diff;
int diff_length;
int first_diff;
int current_pos;
char *xp, *xq;
char out[22];
@@ -369,7 +374,7 @@ char out[22];
if (old==NULL) {
old = (unsigned char *) malloc (width * height);
memset (old, ' ', width * height);
memset (old, ' ', width * height );
CFontz633_hardware_clear (drvthis);
}
@@ -404,60 +409,46 @@ if (model==633) {
/*
* CF631 protocol is more flexible and we can do real delta update.
*/
xp = framebuf;
xq = old;
current_pos=0;
first_diff=0;
for (i = 0; i < height; i++) {
memcpy(&out[0], &framebuf[current_pos], 20);
out[20]=0;
debug (RPT_INFO,"Framebuf: '%s'", out);
memcpy(&out[0], &old[current_pos], 20);
out[20]=0;
debug (RPT_INFO," old : '%s'", out);
xp = framebuf+(i*width);
xq = old+(i*width);
debug (RPT_INFO,"Framebuf: '%.*s'", width, xp );
debug (RPT_INFO," old: '%.*s'", width, xq );
count_diff=0;
for (j = 0; j < width; j++) {
if (*xp == *xq) {
if (count_diff!=0) {
out[0]=i;
out[1]=first_diff-(i*width);
debug (RPT_INFO,"WriteDiff: l=%d c=%d count=%d", out[0], out[1], count_diff);
memcpy(&out[2], &framebuf[first_diff], count_diff);
send_bytes_message(fd, count_diff+2, CF633_Send_Data_to_LCD, out);
count_diff=0;
}
} else { /* (*xp != *xq) */
if (count_diff==0)
{
debug (RPT_INFO,"NewDiff: pos=%d", current_pos);
first_diff=current_pos;
}
count_diff++;
}
current_pos++;
xp++;
xq++;
} /* for j loop */
for (j = 0; j < width; ) {
if (count_diff!=0) { /* End of line treatment (assuming no wrap) */
out[0]=i;
out[1]=first_diff-(i*width);
debug (RPT_INFO,"WriteDiffEOL: l=%d c=%d count=%d", out[0], out[1], count_diff);
memcpy(&out[2], &framebuf[first_diff], count_diff);
send_bytes_message(fd, count_diff+2, CF633_Send_Data_to_LCD, out);
count_diff=0;
}
// skip over identical portions
for ( ; *xp == *xq && j < width; xp++, xq++, j++ );
// deal with the differences
if ( j < width ){
first_diff = j;
for ( ; *xp != *xq && j < width; xp++, xq++, j++ );
}
strncpy(old, framebuf, width*height);
}
// send the difference to the screen
diff_length = j - first_diff;
out[0]=i;
out[1]=first_diff;
debug (RPT_INFO,"WriteDiff: l=%d c=%d count=%d string='%.*s'",
out[0], out[1], diff_length, diff_length,
&framebuf[first_diff+(i*width)] );
memcpy(&out[2], &framebuf[first_diff+(i*width)], diff_length );
send_bytes_message(fd, diff_length+2, CF633_Send_Data_to_LCD, out);
}
} // j < width
} //i < height
memcpy(old, framebuf, width*height);
}
}
/*
@@ -632,6 +623,7 @@ if (model==633)
static void
CFontz633_reboot ()
{
char out[3]= {8, 18, 99};
send_bytes_message(fd, 3, CF633_Reboot, out);
}