/* Copyright (C) 2001-2006 Artifex Software, Inc.
   All Rights Reserved.
  
   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied, modified
   or distributed except as expressly authorized under the terms of that
   license.  Refer to licensing information at http://www.artifex.com/
   or contact Artifex Software, Inc.,  7 Mt. Lassen Drive - Suite A-134,
   San Rafael, CA  94903, U.S.A., +1(415)492-9861, for further information.
*/
/* $Id: gdevcp50.c 8250 2007-09-25 13:31:24Z giles $*/
/* Mitsubishi CP50 color printer driver */
#include "gdevprn.h"
#define ppdev ((gx_device_printer *)pdev)

/***
 *** Note: this driver was contributed by a user.  Please contact
 ***       Michael Hu (michael@ximage.com) if you have questions.
 ***/

/* The value of X_PIXEL and Y_PIXEL is gained by experiment */
#define X_PIXEL   474
#define Y_PIXEL   800

/* The value of FIRST_LINE and LAST_LINE is gained by experiment */
/* Note: LAST-LINE - FIRST_LINE + 1 should close to Y_PIXEL */
#define FIRST_LINE 140
#define LAST_LINE  933

/* The value of FIRST is gained by experiment */
/* There are 60 pixel(RGB) in the right clipped margin */
#define FIRST_COLUMN    180

/* The value of X_DPI and Y_DPI is gained by experiment */
#define X_DPI 154		/* pixels per inch */ 
#define Y_DPI 187		/* pixels per inch */

/* The device descriptor */
static dev_proc_print_page(cp50_print_page);
static dev_proc_output_page(cp50_output_page);

static dev_proc_map_rgb_color(cp50_rgb_color);
static dev_proc_map_color_rgb(cp50_color_rgb);

static gx_device_procs cp50_procs =
  prn_color_procs(gdev_prn_open, cp50_output_page, gdev_prn_close,
    cp50_rgb_color, cp50_color_rgb);

const gx_device_printer far_data gs_cp50_device =
  prn_device(cp50_procs, "cp50",
	39,				/* width_10ths, 100mm */
	59,				/* height_10ths,150mm  */
	X_DPI, Y_DPI,
	0.39, 0.91, 0.43, 0.75,		/* margins */
	24, cp50_print_page);

int copies;

/* ------ Internal routines ------ */


/* Send the page to the printer. */
static int
cp50_print_page(gx_device_printer *pdev, FILE *prn_stream)
{	
	int line_size = gdev_mem_bytes_per_scan_line((gx_device *)pdev);
	byte *out = (byte *)gs_malloc(pdev->memory, line_size, 1, "cp50_print_page(out)");
    byte *r_plane = (byte *)gs_malloc(pdev->memory, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(r_plane)");
    byte *g_plane = (byte *)gs_malloc(pdev->memory, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(g_plane)");
    byte *b_plane = (byte *)gs_malloc(pdev->memory, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(b_plane)");
    byte *t_plane = (byte *)gs_malloc(pdev->memory, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(t_plane)");
	int lnum = FIRST_LINE;
	int last = LAST_LINE;
    int lines = X_PIXEL;
    byte hi_lines, lo_lines;
    byte num_copies;
    int i,j;


/*fprintf(prn_stream, "%d,%d,%d,", pdev->width, pdev->height, line_size);*/

	/* Check allocations */
	if ( out == 0 || r_plane == 0 || g_plane == 0 || b_plane == 0 || 
         t_plane == 0)
	{	if ( out )
			gs_free(pdev->memory, (char *)out, line_size, 1,
				"cp50_print_page(out)");
        if (r_plane)
            gs_free(pdev->memory, (char *)r_plane, X_PIXEL*Y_PIXEL, 1,
                "cp50_print_page(r_plane)");
        if (g_plane)  
            gs_free(pdev->memory, (char *)g_plane, X_PIXEL*Y_PIXEL, 1, 
                "cp50_print_page(g_plane)");
        if (b_plane)  
            gs_free(pdev->memory, (char *)b_plane, X_PIXEL*Y_PIXEL, 1, 
                "cp50_print_page(b_plane)");
        if (t_plane)
            gs_free(pdev->memory, (char *)t_plane, X_PIXEL*Y_PIXEL, 1, 
                "cp50_print_page(t_plane)");
		return -1;
	}

    /* set each plane as white */
    memset(r_plane, -1, X_PIXEL*Y_PIXEL);
    memset(g_plane, -1, X_PIXEL*Y_PIXEL);
    memset(b_plane, -1, X_PIXEL*Y_PIXEL);
    memset(t_plane, -1, X_PIXEL*Y_PIXEL);

	/* Initialize the printer */ /* see programmer manual for CP50 */
	fprintf(prn_stream,"\033\101");
    fprintf(prn_stream,"\033\106\010\001");
    fprintf(prn_stream,"\033\106\010\003");

    /* set number of copies */
    fprintf(prn_stream,"\033\116");
    num_copies = copies & 0xFF;
    fwrite(&num_copies, sizeof(char), 1, prn_stream);

    /* download image */
    hi_lines = lines >> 8;
    lo_lines = lines & 0xFF;

    fprintf(prn_stream,"\033\123\062");
    fwrite(&hi_lines, sizeof(char), 1, prn_stream);
    fwrite(&lo_lines, sizeof(char), 1, prn_stream);
    fprintf(prn_stream,"\001"); /* dummy */

	/* Print lines of graphics */
	while ( lnum <= last )
	   {
        int i, col;
		gdev_prn_copy_scan_lines(pdev, lnum, (byte *)out, line_size);
		/*fwrite(out, sizeof(char), line_size, prn_stream);*/
        for(i=0; i<X_PIXEL; i++)
        {
          col = (lnum-FIRST_LINE) * X_PIXEL + i;
          r_plane[col] = out[i*3+FIRST_COLUMN];
          g_plane[col] = out[i*3+1+FIRST_COLUMN];
          b_plane[col] = out[i*3+2+FIRST_COLUMN];
        }
		lnum ++;
	   }

    /* rotate each plane and download it */
    for(i=0;i<X_PIXEL;i++)
      for(j=Y_PIXEL-1;j>=0;j--)
        t_plane[(Y_PIXEL-1-j)+i*Y_PIXEL] = r_plane[i+j*X_PIXEL];
    fwrite(t_plane, sizeof(char), X_PIXEL*Y_PIXEL, prn_stream);

    for(i=0;i<X_PIXEL;i++)
      for(j=Y_PIXEL-1;j>=0;j--)
        t_plane[(Y_PIXEL-1-j)+i*Y_PIXEL] = g_plane[i+j*X_PIXEL]; 
    fwrite(t_plane, sizeof(char), X_PIXEL*Y_PIXEL, prn_stream);

    for(i=0;i<X_PIXEL;i++)
      for(j=Y_PIXEL-1;j>=0;j--)
        t_plane[(Y_PIXEL-1-j)+i*Y_PIXEL] = b_plane[i+j*X_PIXEL]; 
    fwrite(t_plane, sizeof(char), X_PIXEL*Y_PIXEL, prn_stream);


	gs_free(pdev->memory, (char *)out, line_size, 1, "cp50_print_page(out)");
    gs_free(pdev->memory, (char *)r_plane, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(r_plane)");
    gs_free(pdev->memory, (char *)g_plane, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(g_plane)");
    gs_free(pdev->memory, (char *)b_plane, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(b_plane)");
    gs_free(pdev->memory, (char *)t_plane, X_PIXEL*Y_PIXEL, 1, "cp50_print_page(t_plane)");

	return 0;
}

static int 
cp50_output_page(gx_device *pdev, int num_copies, int flush)
{   int code, outcode, closecode;

    code = gdev_prn_open_printer(pdev, 1);
    if ( code < 0 ) return code;

    copies = num_copies; /* using global variable to pass */

    /* Print the accumulated page description. */
    outcode = (*ppdev->printer_procs.print_page)(ppdev, ppdev->file);
    if ( code < 0 ) return code;

    closecode = gdev_prn_close_printer(pdev);
    if ( code < 0 ) return code;

    if ( ppdev->buffer_space ) /* reinitialize clist for writing */
      code = (*gs_clist_device_procs.output_page)(pdev, num_copies, flush);
 
    if ( outcode < 0 ) return outcode;
    if ( closecode < 0 ) return closecode;
    if ( code < 0 ) return code;
    return gx_finish_output_page(pdev, num_copies, flush);
}


/* 24-bit color mappers (taken from gdevmem2.c). */
/* Note that Windows expects RGB values in the order B,G,R. */
 
/* Map a r-g-b color to a color index. */
static gx_color_index
cp50_rgb_color(gx_device *dev, const gx_color_value cv[])
{   
    gx_color_value red, green, blue;

    red = cv[0]; green = cv[1]; blue = cv[2];
    return ((ulong)gx_color_value_to_byte(red) << 16)+
           ((uint)gx_color_value_to_byte(green) << 8) +
           gx_color_value_to_byte(blue);
}
 
/* Map a color index to a r-g-b color. */
static int
cp50_color_rgb(gx_device *dev, gx_color_index color,
  gx_color_value prgb[3])
{   prgb[2] = gx_color_value_from_byte(color & 0xff);
    prgb[1] = gx_color_value_from_byte((color >> 8) & 0xff);
    prgb[0] = gx_color_value_from_byte(color >> 16);
    return 0;
}