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add more error checking in chn_init() and chn_reset()

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This commit is contained in:
Cameron Grant 2002-01-23 05:21:27 +00:00
parent 79e6a82b48
commit 1e59d53c22
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=89687
1 changed files with 63 additions and 32 deletions
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95
sys/dev/sound/pcm/channel.c
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@ -632,30 +632,33 @@ fmtvalid(u_int32_t fmt, u_int32_t *fmtlist)
int
chn_reset(struct pcm_channel *c, u_int32_t fmt)
{
int hwspd, r = 0;
int hwspd, r;
CHN_LOCKASSERT(c);
c->flags &= CHN_F_RESET;
c->interrupts = 0;
c->xruns = 0;
CHANNEL_RESET(c->methods, c->devinfo);
if (fmt) {
r = CHANNEL_RESET(c->methods, c->devinfo);
if (fmt != 0) {
hwspd = DSP_DEFAULT_SPEED;
/* only do this on a record channel until feederbuilder works */
if (c->direction == PCMDIR_REC)
RANGE(hwspd, chn_getcaps(c)->minspeed, chn_getcaps(c)->maxspeed);
c->speed = hwspd;
r = chn_setformat(c, fmt);
if (r == 0)
r = chn_setformat(c, fmt);
if (r == 0)
r = chn_setspeed(c, hwspd);
if (r == 0)
r = chn_setvolume(c, 100, 100);
}
r = chn_setblocksize(c, 0, 0);
if (r == 0)
r = chn_setblocksize(c, 0, 0);
if (r == 0) {
chn_resetbuf(c);
CHANNEL_RESETDONE(c->methods, c->devinfo);
r = CHANNEL_RESETDONE(c->methods, c->devinfo);
}
return r;
}
@ -665,46 +668,74 @@ chn_init(struct pcm_channel *c, void *devinfo, int dir)
{
struct feeder_class *fc;
struct snd_dbuf *b, *bs;
int ret;
chn_lockinit(c);
CHN_LOCK(c);
b = NULL;
bs = NULL;
c->devinfo = NULL;
c->feeder = NULL;
ret = EINVAL;
fc = feeder_getclass(NULL);
if (fc == NULL)
return EINVAL;
goto out;
if (chn_addfeeder(c, fc, NULL))
return EINVAL;
goto out;
ret = ENOMEM;
b = sndbuf_create(c->name, "primary");
if (b == NULL)
return ENOMEM;
goto out;
bs = sndbuf_create(c->name, "secondary");
if (bs == NULL) {
sndbuf_destroy(b);
return ENOMEM;
}
if (bs == NULL)
goto out;
sndbuf_setup(bs, NULL, 0);
c->bufhard = b;
c->bufsoft = bs;
c->flags = 0;
c->feederflags = 0;
c->devinfo = CHANNEL_INIT(c->methods, devinfo, b, c, dir);
if (c->devinfo == NULL) {
sndbuf_destroy(bs);
sndbuf_destroy(b);
return ENODEV;
}
if ((sndbuf_getsize(b) == 0) && ((c->flags & CHN_F_VIRTUAL) == 0)) {
sndbuf_destroy(bs);
sndbuf_destroy(b);
return ENOMEM;
}
chn_setdir(c, dir);
/* And the secondary buffer. */
sndbuf_setfmt(b, AFMT_U8);
sndbuf_setfmt(bs, AFMT_U8);
ret = ENODEV;
c->devinfo = CHANNEL_INIT(c->methods, devinfo, b, c, dir);
if (c->devinfo == NULL)
goto out;
ret = ENOMEM;
if ((sndbuf_getsize(b) == 0) && ((c->flags & CHN_F_VIRTUAL) == 0))
goto out;
ret = chn_setdir(c, dir);
if (ret)
goto out;
ret = sndbuf_setfmt(b, AFMT_U8);
if (ret)
goto out;
ret = sndbuf_setfmt(bs, AFMT_U8);
if (ret)
goto out;
out:
if (ret) {
if (c->devinfo) {
if (CHANNEL_FREE(c->methods, c->devinfo))
sndbuf_free(b);
}
if (bs)
sndbuf_destroy(bs);
if (b)
sndbuf_destroy(b);
c->flags |= CHN_F_DEAD;
chn_lockdestroy(c);
return ret;
}
CHN_UNLOCK(c);
return 0;
}
@ -841,11 +872,11 @@ chn_tryformat(struct pcm_channel *c, u_int32_t fmt)
c->format = fmt;
r = chn_buildfeeder(c);
if (r == 0) {
sndbuf_setfmt(b, c->feeder->desc->out);
sndbuf_setfmt(bs, fmt);
sndbuf_setfmt(bs, c->format);
chn_resetbuf(c);
CHANNEL_SETFORMAT(c->methods, c->devinfo, sndbuf_getfmt(b));
r = chn_tryspeed(c, c->speed);
r = CHANNEL_SETFORMAT(c->methods, c->devinfo, sndbuf_getfmt(b));
if (r == 0)
r = chn_tryspeed(c, c->speed);
}
return r;
} else