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/* gdevlbp3.c */
/* Canon LASER SHOT LBP-310/320 printer driver for Ghostscript
* working on standerd/fine image mode.
*
* If any comment, write to naoya@mahoroba.ne.jp
*/
#include "gdevprn.h"
#define mm_to_inch(x) (x)/25.4
/* The device descriptor */
static dev_proc_print_page(lbp310PrintPage);
static dev_proc_print_page(lbp320PrintPage);
gx_device_printer far_data gs_lbp310_device =
prn_device(prn_std_procs,
"lbp310",
DEFAULT_WIDTH_10THS,
DEFAULT_HEIGHT_10THS,
600, 600,
mm_to_inch(5.0),
mm_to_inch(5.0),
mm_to_inch(5.0),
mm_to_inch(5.0),
1, lbp310PrintPage);
gx_device_printer far_data gs_lbp320_device =
prn_device(prn_std_procs,
"lbp320",
DEFAULT_WIDTH_10THS,
DEFAULT_HEIGHT_10THS,
600, 600,
mm_to_inch(5.0),
mm_to_inch(5.0),
mm_to_inch(5.0),
mm_to_inch(5.0),
1, lbp320PrintPage);
enum Paper
{
a4, a5, postcard, b5, letter
};
struct bounding
{
enum Paper paper;
int Top, Bottom, Left, Right;
};
struct ppi
{
int w;
int h;
int id;
};
static const struct ppi PaperInfo[] =
{
{2100, 2960, 14}, /* A4 */
{1485, 2098, 16}, /* A5 */
{1000, 1480, 18}, /* Postcard */
{1820, 2570, 26}, /* B5 */
{2100, 2790, 14} /* Letter */
};
static void BoundImage(gx_device_printer *, struct bounding *);
static long CompressImage(gx_device_printer *, struct bounding *, FILE *, const char *);
static int
lbp310PrintPage(gx_device_printer *pDev, FILE *fp)
{
int i;
byte Buf[10];
long DataSize;
struct bounding Box;
BoundImage(pDev, &Box);
DataSize = CompressImage(pDev, &Box, fp, "\x1b[1;%d;%d;11;%d;.r");
/* ----==== Set size ====---- */
sprintf(Buf, "0%ld", DataSize);
i = (DataSize+strlen(Buf)+1)&1;
/* ----==== escape to LIPS ====---- */
fprintf(fp, "\x80%s\x80\x80\x80\x80\x0c",Buf+i);
fprintf(fp, "\x1bP0J\x1b\\");
return(0);
}
static int
lbp320PrintPage(gx_device_printer *pDev, FILE *fp)
{
int i;
byte Buf[16];
long DataSize;
struct bounding Box;
BoundImage(pDev, &Box);
/* ----==== fix bounding box 4-byte align ====---- */
Box.Left &= ~1;
Box.Right |= 1;
/* ----==== JOB start ??? ====---- */
fprintf(fp, "\x1b%%-12345X@PJL CJLMODE\n@PJL JOB\n");
DataSize = CompressImage(pDev, &Box, fp, "\x1b[1;%d;%d;11;%d;.&r");
/* ----==== Set size ====---- */
sprintf(Buf, "000%ld", DataSize);
i = (DataSize+strlen(Buf)+1)&3;
/* ----==== escape to LIPS ====---- */
fprintf(fp, "\x80%s\x80\x80\x80\x80\x0c",Buf+i);
fprintf(fp, "\x1bP0J\x1b\\");
fprintf(fp, "\x1b%%-12345X@PJL CJLMODE\n@PJL EOJ\n\x1b%%-12345X");
return(0);
}
static void
BoundImage(gx_device_printer *pDev, struct bounding *pBox)
{
int x, y, flag;
int LineSize = gdev_mem_bytes_per_scan_line((gx_device *)pDev);
int Xsize, Ysize, Pt, Pb, Pl, Pr;
int Xres = (int)pDev->x_pixels_per_inch,
Yres = (int)pDev->y_pixels_per_inch,
height = pDev->height;
byte *Buf;
enum Paper paper;
/* ----==== Check parameters ====---- */
paper = height*10/Yres < 82 ? postcard :\
height*10/Yres < 98 ? a5 :\
height*10/Yres < 109 ? b5 :\
height*10/Yres < 116 ? letter : a4;
Xsize = Xres * mm_to_inch(PaperInfo[paper].w-100) / 160;
Ysize = Yres * mm_to_inch(PaperInfo[paper].h-100) / 10;
/* ----==== Allocate momory ====---- */
if (LineSize < Xsize*2+1) {
LineSize = Xsize*2+1;
}
Buf = (byte *)gs_malloc(gs_lib_ctx_get_non_gc_memory_t(), 1, LineSize, "LineBuffer");
/* ----==== bounding image ====---- */
Pt = Pb = Pl = Pr = -1;
for(y=0 ; y<height && y<Ysize ; y++){
flag = 0;
gdev_prn_copy_scan_lines(pDev, y, Buf, LineSize);
for (x=0 ; x<min(LineSize/2, Xsize) ; x++) {
if (*(Buf+x*2) || *(Buf+x*2+1)) {
if (Pl == -1 || Pl > x) {
Pl = x;
}
if (Pr < x) {
Pr = x;
}
flag = 1;
}
}
if (flag) {
if (Pt == -1) {
Pt = y;
}
Pb = y;
}
}
pBox->paper = paper;
pBox->Top = Pt;
pBox->Bottom = Pb;
pBox->Left = Pl;
pBox->Right = Pr;
gs_free(gs_lib_ctx_get_non_gc_memory_t(), Buf, 1, LineSize, "LineBuffer");
}
static long
CompressImage(gx_device_printer *pDev, struct bounding *pBox, FILE *fp, const char *format)
{
int x, y, i, count = 255;
int Xres = (int)pDev->x_pixels_per_inch;
int LineSize = gdev_mem_bytes_per_scan_line((gx_device *)pDev);
byte *Buf, oBuf[128], c_prev, c_cur, c_tmp;
long DataSize = 0;
/* ----==== Printer initialize ====---- */
/* ----==== start TEXT mode ====---- */
fprintf(fp, "\x1b%%@");
/* ----==== job start ====---- */
fprintf(fp, "\x1bP35;%d;1J;GhostScript\x1b\\", Xres);
/* ----==== soft reset ====---- */
fprintf(fp, "\x1b<");
/* ----==== select size as dot ====---- */
fprintf(fp, "\x1b[7 I");
/* ----==== ??? ====---- */
fprintf(fp, "\x1b[;1;'v");
/* ----==== set paper size ====---- */
fprintf(fp, "\x1b[%d;;p", PaperInfo[pBox->paper].id);
/* ----==== select sheet feeder ====---- */
fprintf(fp, "\x1b[1q");
/* ----==== disable automatic FF ====---- */
fprintf(fp, "\x1b[?2h");
/* ----==== set number of copies ====---- */
fprintf(fp, "\x1b[%dv", 1);
/* ----==== move CAP location ====---- */
fprintf(fp, "\x1b[%d;%df", pBox->Top, pBox->Left*16);
/* ----==== draw raster image ====---- */
fprintf(fp, format, pBox->Right-pBox->Left+1,
Xres, pBox->Bottom-pBox->Top+1);
/* ----==== Allocate momory ====---- */
Buf = (byte *)gs_malloc(gs_lib_ctx_get_non_gc_memory_t(), 1, LineSize, "LineBuffer");
/* ----==== transfer raster image ====---- */
for (y=pBox->Top ; y<=pBox->Bottom ; y++) {
gdev_prn_copy_scan_lines(pDev, y, Buf, LineSize);
for (x=pBox->Left*2 ; x<=pBox->Right*2+1 ; x++) {
/* ----==== check pointer & Reverse bit order ====---- */
c_cur = 0;
if (x<LineSize) {
c_tmp = *(Buf+x);
for (i=0 ; i<8 ; i++) {
c_cur = (c_cur << 1) | (c_tmp & 1);
c_tmp = c_tmp >> 1;
}
}
/* ----==== Compress data ====---- */
if (count < 0) {
if (c_prev == c_cur && count > -127) {
count--;
continue;
} else {
fprintf(fp, "%c%c", count, c_prev);
DataSize += 2;
}
} else if (count == 0) {
if (c_prev == c_cur) {
count--;
} else {
count++;
c_prev = *(oBuf+count) = c_cur;
}
continue;
} else if (count < 127) {
if (c_prev == c_cur) {
fprintf(fp, "%c", count-1);
fwrite(oBuf, 1, count, fp);
DataSize += (count+1);
count = -1;
} else {
count++;
c_prev = *(oBuf+count) = c_cur;
}
continue;
} else if (count == 127) {
fprintf(fp, "%c", count);
fwrite(oBuf, 1, count+1, fp);
DataSize += (count+2);
}
c_prev = *oBuf = c_cur;
count = 0;
}
}
/* ----==== flush data ====---- */
if (count < 0) {
fprintf(fp, "%c%c", count, c_prev);
DataSize += 2;
} else {
fprintf(fp, "%c", count);
fwrite(oBuf, 1, count+1, fp);
DataSize += (count+2);
}
gs_free(gs_lib_ctx_get_non_gc_memory_t(), Buf, 1, LineSize, "LineBuffer");
return(DataSize);
}
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