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Support recording conversions that change the sample size. PR 10029, from Gregory McGarry.

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augustss 2000-05-02 00:00:00 +00:00
parent 015216d717
commit c7d698ac41
1 changed files with 15 additions and 1 deletions
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16
sys/dev/audio.c
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@ -1,4 +1,4 @@
/* $NetBSD: audio.c,v 1.124 2000/05/01 17:10:40 augustss Exp $ */
/* $NetBSD: audio.c,v 1.125 2000/05/02 00:00:00 augustss Exp $ */
/*
* Copyright (c) 1991-1993 Regents of the University of California.
@ -1266,13 +1266,27 @@ audio_read(sc, uio, ioflag)
if (n < cc)
cc = n; /* don't read beyond end of buffer */
if (sc->sc_rparams.factor != 1) {
/* Compensate for software coding expansion factor. */
n /= sc->sc_rparams.factor;
cc /= sc->sc_rparams.factor;
}
if (uio->uio_resid < cc)
cc = uio->uio_resid; /* and no more than we want */
if (sc->sc_rparams.sw_code)
sc->sc_rparams.sw_code(sc->hw_hdl, outp, cc);
DPRINTFN(1,("audio_read: outp=%p, cc=%d\n", outp, cc));
n = uio->uio_resid;
error = uiomove(outp, cc, uio);
cc = n - uio->uio_resid; /* number of bytes actually moved */
if (sc->sc_rparams.factor != 1) {
/* Adjust count with expansion. */
cc *= sc->sc_rparams.factor;
}
used -= cc;
outp += cc;
if (outp >= cb->end)