ref: 892008af7ca37124d61f3833f800675f6aa77f6b
parent: ccb06791e3ddde584127de0e4aa3ad1c0ea4ae14
author: qwx <[email protected]>
date: Sat Sep 17 23:55:33 EDT 2022
games/dmid: don't buffer output fixes streaming, doesn't really affect performance elsewhere
--- a/sys/src/games/dmid.c
+++ b/sys/src/games/dmid.c
@@ -85,8 +85,7 @@
double freq[128];
int mfmt, ntrk, div = 1, tempo, opl2, stream;
uvlong T;
-Channel *echan;
-Biobuf *ib, *ob;
+Biobuf *ib;
void *
emalloc(ulong n)
@@ -174,7 +173,7 @@
*p++ = v;
*p++ = dt;
*p++ = dt >> 8;
- Bwrite(ob, u, p-u);
+ write(1, u, p-u);
}
void
@@ -440,7 +439,7 @@
void
tproc(void *)
{
- vlong t, Δt;
+ uvlong t, Δt;
uchar u[4];
Trk x;
@@ -447,11 +446,6 @@
x.e = u + sizeof u;
t = nsec();
for(;;){
- if(nbrecv(echan, u) > 0){
- u[0] = 0;
- x.p = u;
- ev(&x);
- }
putcmd(0, 0, 1);
t += 10000000 / (Rate / 100);
Δt = (t - nsec()) / 1000000;
@@ -541,7 +535,7 @@
uchar u[4];
Chan *c;
Opl *o;
- Trk *x, *minx;
+ Trk xs, *x, *minx;
i = "/mnt/wad/genmidi";
ARGBEGIN{
@@ -552,7 +546,6 @@
}ARGEND
readinst(i);
readmid(*argv);
- ob = bfdopen(1, OWRITE);
f = pow(2, 1./12);
for(n=0; n<nelem(freq); n++)
freq[n] = 440 * pow(f, n - 69);
@@ -570,12 +563,14 @@
if(stream){
if(proccreate(tproc, nil, mainstacksize) < 0)
sysfatal("proccreate: %r");
- if((echan = chancreate(sizeof u, 0)) == nil)
- sysfatal("chancreate: %r");
+ xs.p = u;
+ xs.e = u + sizeof u;
for(;;){
if((n = Bread(ib, u, sizeof u)) != sizeof u)
break;
- send(echan, u);
+ u[0] = 0;
+ xs.p = u;
+ ev(&xs);
}
threadexitsall(n < 0 ? "read: %r" : nil);
}