Differential D47917 Diff 148988 sys/dev/sound/pcm/channel.c

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sys/dev/sound/pcm/channel.c

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struct pcm_channel *		struct pcm_channel *
chn_init(struct snddev_info d, struct pcm_channel parent, kobj_class_t cls,		chn_init(struct snddev_info d, struct pcm_channel parent, kobj_class_t cls,
int dir, void *devinfo)		int dir, void *devinfo)
{		{
struct pcm_channel *c;		struct pcm_channel *c;
struct feeder_class *fc;		struct feeder_class *fc;
struct snd_dbuf b, bs;		struct snd_dbuf b, bs;
char buf[CHN_NAMELEN];		char buf[CHN_NAMELEN];
int i, direction;		int err, i, direction;

PCM_BUSYASSERT(d);		PCM_BUSYASSERT(d);
PCM_LOCKASSERT(d);		PCM_LOCKASSERT(d);

switch (dir) {		switch (dir) {
case PCMDIR_PLAY:		case PCMDIR_PLAY:
case PCMDIR_PLAY_VIRTUAL:		case PCMDIR_PLAY_VIRTUAL:
direction = PCMDIR_PLAY;		direction = PCMDIR_PLAY;
▲ Show 20 Lines • Show All 90 Lines • ▼ Show 20 Lines	chn_init(struct snddev_info d, struct pcm_channel parent, kobj_class_t cls,
* is allocated by the driver or via DMA map setup, and tmpbuf		* is allocated by the driver or via DMA map setup, and tmpbuf
* seems to only come into existence in sndbuf_resize().		* seems to only come into existence in sndbuf_resize().
*/		*/
if (c->direction == PCMDIR_PLAY) {		if (c->direction == PCMDIR_PLAY) {
bs->sl = sndbuf_getmaxsize(bs);		bs->sl = sndbuf_getmaxsize(bs);
bs->shadbuf = malloc(bs->sl, M_DEVBUF, M_WAITOK);		bs->shadbuf = malloc(bs->sl, M_DEVBUF, M_WAITOK);
}		}

		/* vchans get a chn_reset() from vchan_create(). */
		if ((c->flags & CHN_F_VIRTUAL) == 0) {
		CHN_LOCK(c);
		err = chn_reset(c, c->format, c->speed);
		CHN_UNLOCK(c);
		if (err != 0)
		goto fail;
		}

PCM_LOCK(d);		PCM_LOCK(d);
CHN_INSERT_SORT_ASCEND(d, c, channels.pcm);		CHN_INSERT_SORT_ASCEND(d, c, channels.pcm);
		if ((c->flags & CHN_F_VIRTUAL) == 0)
		CHN_INSERT_SORT_ASCEND(d, c, channels.pcm.primary);

switch (c->type) {		switch (c->type) {
case PCMDIR_PLAY:		case PCMDIR_PLAY:
d->playcount++;		d->playcount++;
break;		break;
case PCMDIR_PLAY_VIRTUAL:		case PCMDIR_PLAY_VIRTUAL:
d->pvchancount++;		d->pvchancount++;
break;		break;
Show All 35 Lines	chn_kill(struct pcm_channel *c)
struct snddev_info *d = c->parentsnddev;		struct snddev_info *d = c->parentsnddev;
struct snd_dbuf *b = c->bufhard;		struct snd_dbuf *b = c->bufhard;
struct snd_dbuf *bs = c->bufsoft;		struct snd_dbuf *bs = c->bufsoft;

PCM_BUSYASSERT(c->parentsnddev);		PCM_BUSYASSERT(c->parentsnddev);

PCM_LOCK(d);		PCM_LOCK(d);
CHN_REMOVE(d, c, channels.pcm);		CHN_REMOVE(d, c, channels.pcm);
		if ((c->flags & CHN_F_VIRTUAL) == 0)
		CHN_REMOVE(d, c, channels.pcm.primary);

switch (c->type) {		switch (c->type) {
case PCMDIR_PLAY:		case PCMDIR_PLAY:
d->playcount--;		d->playcount--;
break;		break;
case PCMDIR_PLAY_VIRTUAL:		case PCMDIR_PLAY_VIRTUAL:
d->pvchancount--;		d->pvchancount--;
break;		break;
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