plot.c

语音信号处理工具包,里面提供了很多有用的操作。这是最新版本

/*
  ----------------------------------------------------------------
	Speech Signal Processing Toolkit (SPTK): version 3.0
			 SPTK Working Group

		   Department of Computer Science
		   Nagoya Institute of Technology
				and
    Interdisciplinary Graduate School of Science and Engineering
		   Tokyo Institute of Technology
		      Copyright (c) 1984-2000
			All Rights Reserved.

  Permission is hereby granted, free of charge, to use and
  distribute this software and its documentation without
  restriction, including without limitation the rights to use,
  copy, modify, merge, publish, distribute, sublicense, and/or
  sell copies of this work, and to permit persons to whom this
  work is furnished to do so, subject to the following conditions:

    1. The code must retain the above copyright notice, this list
       of conditions and the following disclaimer.

    2. Any modifications must be clearly marked as such.

  NAGOYA INSTITUTE OF TECHNOLOGY, TOKYO INSITITUTE OF TECHNOLOGY,
  SPTK WORKING GROUP, AND THE CONTRIBUTORS TO THIS WORK DISCLAIM
  ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
  SHALL NAGOYA INSTITUTE OF TECHNOLOGY, TOKYO INSITITUTE OF
  TECHNOLOGY, SPTK WORKING GROUP, NOR THE CONTRIBUTORS BE LIABLE
  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
  DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  PERFORMANCE OF THIS SOFTWARE.
 ----------------------------------------------------------------
*/

/********************************************************
*	Interpret X-Y Plotter Commands			*
********************************************************/
#include <stdio.h>
#include "psgr.h"

#define	BUFSIZE		2048
#define	MADJ		0.275
#define	PU_PT		(72.0/254.0)

#define	norm(x)		(int)(x)
#define moveto(x, y)	printf("%d %d MT\n", (x), (y))
#define lineto(x, y)	printf("%d %d LT\n", (x), (y))
#define rmoveto(x, y)	printf("%d %d RMT\n", (x), (y))
#define rlineto(x, y)	printf("%d %d RLT\n", (x), (y))
#define	clip_on()	printf("GS\n")
#define	clip_off()	printf("GR\n")
#define	circle(x, y, r1, r2, ang1, ang2)\
			arc((x), (y), (r1), (ang1), (ang2), 0)

static char	*lmode[] = {
			"[] 0",			/*  Line 0: Solid	*/
			"[1 16] 0",		/*  Line 6: Dotted2	*/
			"[1 7] 0",		/*  Line 2: Dotted	*/
			"[8 8] 0",		/*  Line 4: Dashed	*/
			"[16 14] 0",		/*  Line 5: Long_Dashed	*/
			"[20 8 3 8] 0",
			"[18 7 2 7] 0",		/*  Line 3: Dot_Dashed	*/
			"[16 6 2 6 2 6] 0",
			"[20 8 3 8 3 8] 0"
		};

static float	lwidth[] = {	0.05, 2.00, 0.05, 2.00, 4.00, 6.00,
				0.01, 1.00, 0.10, 0.20, 0.40, 0.60	};

static char	*fillpattern[] = {
			"0",	"0.875",
			"P2", "P3", "P4", "P5", "P6", "P7",
			"0.75",	"1",
		};

static char	*symbol_up = "ABGDEZHQIKLMNXOPRSTUFCYW";
static char	*symbol_lw = "abgdezhqiklmnxoprstufcyw";
#define		INFTY	165
#define		SPACE	32
static char     *font[] = { "FnS", "FnC", "FnCO", "FnCB", "FnCBO" };
static float	fnmag[] = {  1.375,  1.50,   1.50,   1.50,   1.50  };

static struct	cord  {
	int	x;
	int	y;
}  pb;

static int	xb[BUFSIZE], yb[BUFSIZE];
static int	sp = 1;
static int	ch = 30, cw = 30, th = 0, rotate = 0, mfg = 0;
static int	init_str_flag = 0;	/*  Initial string segment
						flag for text rotation.	*/


plot( fp )
	FILE	*fp;
{
	register int	c;
	int		n, xmin, xmax, ymin, ymax;
	int		r1, r2, ang1, ang2;

	while ((c=getc(fp)) != EOF)  {
	    switch (c)  {
		case 'M':	fscanf(fp, "%d %d", &pb.x, &pb.y);
				_move(pb.x, pb.y);			break;
		case 'D':	_line(fp);				break;
/*		case '%':	fscanf(fp, "%d", &n);	polyg(fp, n);	break;
*/		case '%':	fscanf(fp, "%d", &n);
				hatching(fp, n);			break;
/**/		case 'P':	get_str(fp);				break;
		case 'S':	fscanf(fp, "%d", &ch);	ch += 3;	break;
		case 'Q':	fscanf(fp, "%d", &cw);	cw += 3;	break;
		case 'R':	fscanf(fp, "%d", &th);
				rotate = th / 10;
				th = (th == 0) ? 0 : 1;			break;
		case 'L':	fscanf(fp, "%d", &n);	line_type(n);	break;
		case 'W':	fscanf(fp, "%d %d %d %d %d %d",
					&pb.x, &pb.y, &r1, &r2, &ang1, &ang2);
				circle(norm(pb.x), norm(pb.y),
						r1, r2, ang1, ang2);	break;
		case 'N':	fscanf(fp, "%d", &n);	mark(n);	break;
		case 'J':	fscanf(fp, "%d", &n);	newpen(n);	break;
		case '\\':	fscanf(fp, "%d %d", &xmin, &ymin);
				if ( xmin < 0 )		xmin = 0;
				if ( ymin < 0 )		ymin = 0;	break;
		case 'Z':	fscanf(fp, "%d %d", &xmax, &ymax);
				if ( xmax > xleng )	xmax = xleng;
				if ( ymax > yleng )	ymax = yleng;
				clip(norm(xmin), norm(ymin),
				     norm(xmax), norm(ymax));		break;
		case ';':
		case ':':						break;
		default:						break;
	    }
	}
}

_move( x, y )
	int	x, y;
{
	xb[0] = norm(x);
	yb[0] = norm(y);
}

_line( fp )
	FILE	*fp;
{
	while (_getcord(fp, &pb))
		_send(&pb);

	_flush();
}

_getcord( fp, buf )
	FILE	*fp;
	int	*buf;
{
	register int	c;

	while ((c=getc(fp)) == '\n' || c == ' ')
		;
	if ( c )  {
		ungetc(c, fp);
		fscanf(fp, "%d %d", buf, buf+1);
		return(1);
	}
	else
		return(0);
}

_send( buf )
	int	*buf;
{
	if ( sp == BUFSIZE )
		_flush();
	xb[sp]   = norm(*buf++);
	yb[sp++] = norm(*buf);
}

_flush()
{
	if ( sp > 1 )  {
		polylines(xb, yb, sp--);
		xb[0] = xb[sp];
		yb[0] = yb[sp];
		sp = 1;
	}
}

polylines( x, y, n )
	int	*x, *y, n;
{
	moveto(*x++, *y++);
	while ( --n > 0 )
		lineto(*x++, *y++);

	printf("ST\n");
}

polyg( fp, type )
	FILE	*fp;
	int	type;
{
	register int	n;
	int		d, angle;

	intstyle(type);
	fscanf(fp, "%d %d", &d, &angle);
	for (n=1; _getcord(fp, &pb); n++)  {
		xb[n] = norm(pb.x);
		yb[n] = norm(pb.y);
	}
	xb[n] = xb[1];
	yb[n] = yb[1];
	polylines(xb+1, yb+1, n);
}

intstyle( type )
	int	type;
{
	int	is_frame = 1, style = 2;

	switch (type -= 20)  {
		case 1:		style = 0;			break;
		case 2:		is_frame = 0;			break;
		case 3:						break;
		default:	if ( type < 0 )
					is_frame = 0;
				else
					type = -type;
				if ( (style = type+10) == 0 )
					style = 1;
	}
}

hatching( fp, type )
	FILE	*fp;
	int	type;
{
	register int	n;
	int		style, frame;
	int		x, y, d, angle;

	fscanf(fp, "%d %d", &d, &angle);

	for (n=1; _getcord(fp, &pb); n++)  {
		xb[n] = norm(pb.x);
		yb[n] = norm(pb.y);
	}
	xb[n] = xb[1];
	yb[n] = yb[1];

	switch ( type-=20 )  {
	    case 1:	frame = 1;	type = -1;	break;
	    case 2:	frame = 0;	type = -1;	break;
	    case 3:	frame = 1;	type = -1;	break;
	    default:	if ( type < 0 )  {
				frame = 0;
				type = -type;
			}
			else
				frame = 1;
							break;
	}
	if ( type == -1 )
		polylines(xb+1, yb+1, n);
	else
		rectangle(xb[1], yb[1], xb[2], yb[3], frame, type);
}

rectangle( x0, y0, x1, y1, frame, fill )
	int	x0, y0, x1, y1;
	int	frame, fill;
{
	static char	gray[16][8] = {
				"0",	"0.875",
				"0.7",	"0.6",	"0.5",	"0.4",	"0.3",	"0.2",
				"0.75",	"1",
			};
		
	fill %= 10;
	if ( fill >= 2 && fill <= 7 )  {
		printf("%s SG\n", gray[fill]);
/*		printf("PM {%s} IM\n", fillpattern[fill]);
*/		printf("%d %d %d %d RP\n",(x0),(y0),(x1-x0),(y1-y0));
	}
	else
		printf("%s SG\n", fillpattern[fill]);

	printf("%d %d %d %d RF\n",(x0),(y0),(x1-x0),(y1-y0));

	if ( fill != 0 )
		printf("0 SG\n");

	if ( frame )
		printf("%d %d %d %d RS\n",(x0),(y0),(x1-x0),(y1-y0));
}

/*
#define	box(x0, y0, x1, y1)\
			printf("%d %d %d %d RS\n",(x0),(y0),(x1-x0),(y1-y0))
#define	fillbox(x0, y0, x1, y1)\
			printf("%d %d %d %d RF\n",(x0),(y0),(x1-x0),(y1-y0))
#define	setfill(x)	printf("%3.1f SG\n", (x))
#define	unsetfill()	printf("0 SG\n")

rectangle( x0, y0, x1, y1, frame, fill )
	int	x0, y0, x1, y1;
	int	frame, fill;
{
	if ( (fill %= 10) != 9 )  {
		if (fill)  {
			setfill(gray[fill]);
			fillbox(x0, y0, x1, y1);
			unsetfill();
		}
		else
			fillbox(x0, y0, x1, y1);
	}

	if ( frame )
		box(x0, y0, x1, y1);
}
*/
/*
hatching( fp, type )
	FILE	*fp;
	int	type;
{
	register int	n;
	int		style;
	int		x, y, d, ang, r1, r2, ang1, ang2;

	style = type % 10;
	type /= 10;

	switch ( type )  {
	    case 0:
			fscanf(fp, "%d %d %d %d", &x, &y, &d, &ang);
			box(x, y);
			break;
	    case 1:
			fscanf(fp, "%d %d %d %d %d %d",
					 &r1, &r2, &ang1, &ang2, &d, &ang);
			circle(norm(pb.x), norm(pb.y), r1, r2, ang1, ang2);
			break;
	    case 2:
			for (n=1; _getcord(fp, &pb); n++)  {
				xb[n] = norm(pb.x);
				yb[n] = norm(pb.y);
			}
			xb[n] = xb[1];
			yb[n] = yb[1];
			polylines(xb+1, yb+1, n);
			break;
	    default:
			break;
	}
}
*/

get_str( fp )
	FILE	*fp;
{		    
	int		c;	/*  charactor code  */
	int		i;	/*  outputs strings length  */
	int		j;	/*  previus strings length of same fonts  */
	int		k;	/*  current strings length of same fonts  */
	int		sfg=0;	/*  Symbol fonts' flag  */
	char		s[512];
	static float	mag = 0.875;		/*  7/8  */

	init_str_flag = 1;

	for (i=j=k=0; c=getc(fp); i++, j++)  {
		if ( (c &= 0xff) <= 192 )  {	/*  not Symbol	  */
			if ( sfg )  {		/*  flush buffer  */
				s[i] = '\0';
				xb[0] += (int)(cw * k * mag);
				text(s, i, 0);
				k = j;
				i = j = 0;
				sfg = 0;
			}
			if ( c != '(' && c != ')' )
				s[i] = c;
			else  {
				sprintf(s+i, "\\%c", c);
				i++;
			}
		}
		else  {				/*  Symbol        */
			if ( !sfg )  {		/*  flush buffer  */
				s[i] = '\0';
				xb[0] += (int)(cw * k * mag);
				text(s, i, font_no);
				k = j;
				i = j = 0;
				sfg = 1;
			}
			if ( c <= 216 )
				sprintf(s+i,"%c", symbol_up[c-193]);
			else if ( c >=225 && c <= 248 )
				sprintf(s+i,"%c", symbol_lw[c-225]);
			else if ( c == 254 )
				sprintf(s+i,"%c", INFTY);
			else
				sprintf(s+i,"%c", SPACE);
		}
	}
	s[i] = '\0';
	xb[0] += (int)(cw * k * mag);
	if ( ! sfg )
		text(s, i, font_no);
	else
		text(s, i, 0);
}

text( s, n, fn )
	char	*s;
	int	n, fn;
{
	int		fn_w, fn_h;
	static int	cfn=-1, ccw=-1, cch=-1;

	if ( n <= 0 )	return;

	if ( cfn != fn || ccw != cw || cch != ch || mfg )  {
		fn_w = (int)(cw * fnmag[fn]);
		fn_h = (int)(ch * fnmag[fn]);

		if ( cw == ch )
			if ( fn != 0 )		/*  not Symbol  */
				printf("%s %d SF\n", font[fn], fn_w);
			else
				printf("%s [%d 0 %d %d 0 0] SF\n",
						font[fn], fn_w, fn_h/4, fn_h);
		else
			if ( fn != 0 )
				printf("%s [%d 0 0 %d 0 0] SF\n",
						font[fn],fn_w,fn_h);
			else
				printf("%s [%d 0 %d %d 0 0] SF\n",
						font[fn], fn_w, fn_h/4, fn_h);

		cfn = fn;	ccw = cw;	cch = ch;
		mfg = 0;
	}
	if ( th == 0 )
		printf("(%s) %d %d MS\n", s, xb[0], yb[0]);
	else  {
		if ( init_str_flag )  {
			printf("%d %d MT\n", xb[0], yb[0]);
			printf("%d rotate\n", rotate);
			printf("(%s) show\n", s);
			printf("%d rotate\n", -rotate);
			init_str_flag = 0;
		}
		else  {
			printf("%d %d TR\n", xb[0], yb[0]);
			printf("%d rotate\n", rotate);
			printf("(%s) show\n", s);
			printf("%d rotate\n", -rotate);
			printf("%d %d TR\n", -xb[0], -yb[0]);
		}
	}
}

line_type( type )
	int	type;
{
	if ( type < 0 || type > 8 )
		type = 0;

	printf("%s setdash\n", lmode[type]);
}

newpen( width )
	int	width;
{
	if ( width < 0 || width > 10 )
		width = 1;

	printf("%4.2f SL\n", lwidth[width]);
}

mark( no )
	int	no;
{
	int	size, dsize, qsize, hsize;

/*	size = (int)(ch * MADJ);
*/	size = (int)(ch * MADJ * 0.75);
	dsize = 2 * size;
	qsize = 4 * size;
	hsize = size / 2;

	moveto(*xb, *yb);
	switch (no)  {
	    case 1:	arc(*xb, *yb, hsize, 0, 360, 1);		break;
	    case 2:	symbol("\264", dsize, -hsize, -hsize);		break;
	    case 3: 	rect(*xb-size, *yb-size, dsize, dsize, 0);	break;
	    case 4:	tangle(size, 0);				break;
	    case 5:	arc(*xb, *yb, size, 0, 360, 0);			break;
	    case 6:	symbol("\340", qsize, -size, -size-hsize);	break;
	    case 7:	symbol("\264", qsize, -size, -size);		break;
	    case 8:	symbol("\053", qsize, -size, -size);		break;
	    case 9:	symbol("\304", qsize, -size*8/5, -size*7/5);	break;
	    case 10:	symbol("\305", qsize, -size*8/5, -size*7/5);	break;
	    case 11:	rect(*xb-size, *yb-size, dsize, dsize, 1);	break;
	    case 12:	tangle(size, 1);				break;
	    case 13:	arc(*xb, *yb, size, 0, 360, 1);			break;
	    case 14:	symbol("\250", qsize, -size-hsize, -size);	break;
	    case 15:	symbol("\052", qsize, -size, -size-hsize);	break;
	    default:							break;
	}
}

rect( x, y, w, h, fill )
	int	x, y, w, h, fill;
{
	if ( ! fill )
		printf("%d %d %d %d RS\n", x, y, w, h);
	else
		printf("%d %d %d %d RF\n", x, y, w, h);
}

tangle( size, fill )
	int	size, fill;
{
	int	bsize;

	bsize = (int)(0.8*size);
	rmoveto(0, bsize);
	rlineto(size, -2*bsize);
	rlineto(-2*size, 0);
	printf("closepath\n");
	if ( fill )
		printf("fill\n");
	printf("ST\n");
}

arc( x, y, r, ang1, ang2, fill )
	int	x, y, r, ang1, ang2;
{
	printf("newpath\n");
 	printf("%d %d %d %d %d arc\n", x, y, r, ang1, ang2);
	printf("closepath\n");
	if ( fill )
		printf("fill\n");
	printf("ST\n");
}

symbol( code, size, xoffset, yoffset )
	char	*code;
	int	size, xoffset, yoffset;
{
	static char	prev[16];

	if ( !mfg || strcmp(prev,code) )  {
		printf("FnS %d SF\n", size);
		mfg = 1;
		strcpy(prev, code);
	}
	printf("(%s) %d %d RMS\n", code, xoffset, yoffset);
}


clip( x0, y0, x1, y1 )
	int	x0, y0, x1, y1;
{
	if ( clip_mode )  {
		clip_off();
		clip_mode = 0;
	}

	if ( (x0 != 0) && (y0 != 0) && (x1 != xleng) && (y1 != yleng) ) {
		clip_on();
		clip_mode = 1;

		printf("%d %d %d %d RC\n", x0, y0, x1-x0, y1-y0);
	}
}