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More generic support for poll descriptors

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This commit is contained in:
Abramo Bagnara 2001-02-12 23:51:49 +00:00
parent a86efa083c
commit 460660d4b4
25 changed files with 162 additions and 68 deletions
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24
src/pcm/pcm.c
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@ -205,12 +205,12 @@ snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t s
}
/* FIXME */
#define snd_pcm_link_descriptor snd_pcm_poll_descriptor
#define _snd_pcm_link_descriptor _snd_pcm_poll_descriptor
int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2)
{
int fd1 = snd_pcm_link_descriptor(pcm1);
int fd2 = snd_pcm_link_descriptor(pcm2);
int fd1 = _snd_pcm_link_descriptor(pcm1);
int fd2 = _snd_pcm_link_descriptor(pcm2);
if (fd1 < 0 || fd2 < 0)
return -ENOSYS;
if (ioctl(fd1, SNDRV_PCM_IOCTL_LINK, fd2) < 0) {
@ -223,7 +223,7 @@ int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2)
int snd_pcm_unlink(snd_pcm_t *pcm)
{
int fd;
fd = snd_pcm_link_descriptor(pcm);
fd = _snd_pcm_link_descriptor(pcm);
if (ioctl(fd, SNDRV_PCM_IOCTL_UNLINK) < 0) {
SYSERR("SNDRV_PCM_IOCTL_UNLINK failed");
return -errno;
@ -231,12 +231,22 @@ int snd_pcm_unlink(snd_pcm_t *pcm)
return 0;
}
int snd_pcm_poll_descriptor(snd_pcm_t *pcm)
int _snd_pcm_poll_descriptor(snd_pcm_t *pcm)
{
assert(pcm);
return pcm->poll_fd;
}
int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space)
{
assert(pcm);
if (space >= 1) {
pfds->fd = pcm->poll_fd;
pfds->events = pcm->stream == SND_PCM_STREAM_PLAYBACK ? POLLOUT : POLLIN;
}
return 1;
}
#define STATE(v) [SND_PCM_STATE_##v] = #v
#define STREAM(v) [SND_PCM_STREAM_##v] = #v
#define READY(v) [SND_PCM_READY_##v] = #v
@ -688,8 +698,8 @@ int snd_pcm_wait(snd_pcm_t *pcm, int timeout)
{
struct pollfd pfd;
int err;
pfd.fd = snd_pcm_poll_descriptor(pcm);
pfd.events = pcm->stream == SND_PCM_STREAM_PLAYBACK ? POLLOUT : POLLIN;
err = snd_pcm_poll_descriptors(pcm, &pfd, 1);
assert(err == 1);
err = poll(&pfd, 1, timeout);
if (err < 0)
return -errno;