shithub: pplay

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logic for sample drawing pixel width

--- a/draw.c

+++ b/draw.c

@@ -25,6 +25,7 @@

 static usize T;

 static uchar *sbuf;

 static usize sbufsz;

+static int sampwidth = 1;

 static Image *

 eallocimage(Rectangle r, int repl, ulong col)

@@ -75,9 +76,9 @@

 end:

 		recvul(drawc);

 again:

-		if(sbufsz < T){

-			sbuf = erealloc(sbuf, T, sbufsz);

-			sbufsz = T;

+		if(sbufsz < T * sampwidth){

+			sbuf = erealloc(sbuf, T * sampwidth, sbufsz);

+			sbufsz = T * sampwidth;

 		}

 		lockdisplay(display);

 		draw(viewbg, viewbg->r, col[Cbg], nil, ZP);

@@ -91,7 +92,7 @@

 				qunlock(&lsync);

 				goto again;

 			}

-			n = m < T ? m : T;

+			n = m < T * sampwidth ? m : T * sampwidth;

 			p = getbuf(d, n, sbuf, &n);

 			qunlock(&lsync);

 			if(p == nil){

@@ -116,13 +117,13 @@

 					else if(s > rmax)

 						rmax = s;

 				}

-				p += 4;

+				p += 4 * sampwidth;

 			}

 			m -= n;

 			l = Rect(x, bgscalyl - lmax / bgscalf,

-				x+1, bgscalyl - lmin / bgscalf);

+				x+sampwidth, bgscalyl - lmin / bgscalf);

 			r = Rect(x, bgscalyr - rmax / bgscalf,

-				x+1, bgscalyr - rmin / bgscalf);

+				x+sampwidth, bgscalyr - rmin / bgscalf);

 			lockdisplay(display);

 			draw(viewbg, l, col[Csamp], nil, ZP);

 			if(stereo)