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Use MaxPacketSize for setting up isochronous pipe for recording. 

This fixes dropping samples.
This commit is contained in:
toshii 2003-03-30 04:47:13 +00:00
parent 374319260c
commit ba612a905f
1 changed files with 15 additions and 14 deletions
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29
sys/dev/usb/uaudio.c
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@ -1,4 +1,4 @@
/* $NetBSD: uaudio.c,v 1.64 2003/02/23 04:20:06 simonb Exp $ */
/* $NetBSD: uaudio.c,v 1.65 2003/03/30 04:47:13 toshii Exp $ */
/*
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -44,7 +44,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uaudio.c,v 1.64 2003/02/23 04:20:06 simonb Exp $");
__KERNEL_RCSID(0, "$NetBSD: uaudio.c,v 1.65 2003/03/30 04:47:13 toshii Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -256,7 +256,7 @@ Static usbd_status uaudio_chan_alloc_buffers(struct uaudio_softc *,
Static void uaudio_chan_free_buffers(struct uaudio_softc *,
struct chan *);
Static void uaudio_chan_init(struct chan *, int,
const struct audio_params *);
const struct audio_params *, int);
Static void uaudio_chan_set_param(struct chan *ch, u_char *start,
u_char *end, int blksize);
Static void uaudio_chan_ptransfer(struct chan *ch);
@ -2088,12 +2088,6 @@ uaudio_chan_rtransfer(struct chan *ch)
total = 0;
for (i = 0; i < UAUDIO_NFRAMES; i++) {
size = ch->bytes_per_frame;
residue += ch->fraction;
if (residue >= USB_FRAMES_PER_SECOND) {
if ((ch->sc->sc_altflags & UA_NOFRAC) == 0)
size += ch->sample_size;
residue -= USB_FRAMES_PER_SECOND;
}
cb->sizes[i] = size;
cb->offsets[i] = total;
total += size;
@ -2179,17 +2173,23 @@ uaudio_chan_rintr(usbd_xfer_handle xfer, usbd_private_handle priv,
}
void
uaudio_chan_init(struct chan *ch, int altidx, const struct audio_params *param)
uaudio_chan_init(struct chan *ch, int altidx, const struct audio_params *param,
int maxpktsize)
{
int samples_per_frame, sample_size;
ch->altidx = altidx;
sample_size = param->precision * param->factor * param->hw_channels / 8;
samples_per_frame = param->hw_sample_rate / USB_FRAMES_PER_SECOND;
ch->fraction = param->hw_sample_rate % USB_FRAMES_PER_SECOND;
ch->sample_size = sample_size;
ch->sample_rate = param->hw_sample_rate;
ch->bytes_per_frame = samples_per_frame * sample_size;
if (maxpktsize == 0) {
ch->fraction = param->hw_sample_rate % USB_FRAMES_PER_SECOND;
ch->bytes_per_frame = samples_per_frame * sample_size;
} else {
ch->fraction = 0;
ch->bytes_per_frame = maxpktsize;
}
ch->residue = 0;
}
@ -2521,11 +2521,12 @@ uaudio_set_params(void *addr, int setmode, int usemode,
if ((usemode & AUMODE_PLAY) /*&& paltidx != sc->sc_playchan.altidx*/) {
/* XXX abort transfer if currently happening? */
uaudio_chan_init(&sc->sc_playchan, paltidx, play);
uaudio_chan_init(&sc->sc_playchan, paltidx, play, 0);
}
if ((usemode & AUMODE_RECORD) /*&& raltidx != sc->sc_recchan.altidx*/) {
/* XXX abort transfer if currently happening? */
uaudio_chan_init(&sc->sc_recchan, raltidx, rec);
uaudio_chan_init(&sc->sc_recchan, raltidx, rec,
UGETW(sc->sc_alts[raltidx].edesc->wMaxPacketSize));
}
DPRINTF(("uaudio_set_params: use altidx=p%d/r%d, altno=p%d/r%d\n",