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nusb/cam: use setalt()

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This commit is contained in:
cinap_lenrek 2022-02-23 18:02:02 +00:00
parent 67750a093f
commit 11e12ea0c0
1 changed files with 11 additions and 14 deletions
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25
sys/src/cmd/nusb/cam/video.c
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@ -190,7 +190,7 @@ cvtproc(void *v)
c->abort = 1;
free(fbuf);
closedev(c->ep);
usbcmd(c->dev, 0x01, Rsetiface, 0, c->iface->id, nil, 0);
setalt(c->dev, c->iface);
c->ep = nil;
c->active = 0;
c->abort = 0;
@ -198,7 +198,7 @@ cvtproc(void *v)
}
static Ep*
selaltc(Cam *c, ProbeControl *pc, Ep *ep)
selbw(Cam *c, ProbeControl *pc, Ep *ep)
{
uvlong bw, bw1, minbw;
Format *fo;
@ -206,7 +206,8 @@ selaltc(Cam *c, ProbeControl *pc, Ep *ep)
Ep *mink;
if(getframedesc(c, pc->bFormatIndex, pc->bFrameIndex, &fo, &f) < 0){
werrstr("selaltc: PROBE_CONTROL returned invalid bFormatIndex,bFrameIndex=%d,%d", pc->bFormatIndex, pc->bFrameIndex);
werrstr("selaltc: PROBE_CONTROL returned invalid bFormatIndex,bFrameIndex=%d,%d",
pc->bFormatIndex, pc->bFrameIndex);
return nil;
}
mink = nil;
@ -218,8 +219,8 @@ selaltc(Cam *c, ProbeControl *pc, Ep *ep)
bw1 = ep->maxpkt * ep->ntds * 8 * 1000 * 8;
if(bw1 >= bw) {
if(mink == nil || bw1 < minbw){
minbw = bw1;
mink = ep;
minbw = bw1;
}
}
}
@ -227,10 +228,6 @@ selaltc(Cam *c, ProbeControl *pc, Ep *ep)
werrstr("device does not have enough bandwidth (need %lld bit/s)", bw);
return nil;
}
if(usbcmd(c->dev, 0x01, Rsetiface, mink->iface->alt, mink->iface->id, nil, 0) < 0){
werrstr("selaltc: SET_INTERFACE(%d, %d): %r", ep->iface->id, ep->iface->alt);
return nil;
}
return mink;
}
@ -275,22 +272,22 @@ err:
}
if(getconverter(f) == nil) goto err;
d = c->dev;
if(usbcmd(d, 0x01, Rsetiface, 0, c->iface->id, nil, 0) < 0) goto err;
if(setalt(d, c->iface) < 0) goto err;
if(usbcmd(d, 0x21, SET_CUR, VS_PROBE_CONTROL << 8, c->iface->id, (uchar *) &c->pc, sizeof(ProbeControl)) < sizeof(ProbeControl)) goto err;
if(usbcmd(d, 0xA1, GET_CUR, VS_PROBE_CONTROL << 8, c->iface->id, (uchar *) &c->pc, sizeof(ProbeControl)) < 0) goto err;
if(usbcmd(d, 0x21, SET_CUR, VS_COMMIT_CONTROL << 8, c->iface->id, (uchar *) &c->pc, sizeof(ProbeControl)) < sizeof(ProbeControl)) goto err;
e = selaltc(c, &c->pc, d->usb->ep[c->hdr->bEndpointAddress & Epmax]);
if(e == nil)
goto err;
e = selbw(c, &c->pc, d->usb->ep[c->hdr->bEndpointAddress & Epmax]);
if(e == nil || setalt(c->dev, e->iface) < 0)
return nil;
c->ep = openep(d, e);
if(c->ep == nil){
usbcmd(d, 0x01, Rsetiface, 0, c->iface->id, nil, 0);
setalt(d, c->iface);
goto err;
}
devctl(c->ep, "uframes 1");
if(opendevdata(c->ep, OREAD) < 0){
usbcmd(d, 0x01, Rsetiface, 0, c->iface->id, nil, 0);
closedev(c->ep);
setalt(d, c->iface);
goto err;
}
mkframes(c);