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Removed old sync support. Introduced linked streams

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This commit is contained in:
Abramo Bagnara 2000-07-24 08:19:34 +00:00
parent bd532fd398
commit 59c6c40f5c
4 changed files with 65 additions and 47 deletions
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50
src/pcm/pcm.c
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@ -160,6 +160,7 @@ int snd_pcm_go(snd_pcm_t *handle)
return handle->fast_ops->go(handle->fast_op_arg);
}
#if 0
int snd_pcm_synchro(snd_pcm_synchro_cmd_t cmd,
unsigned int reqs_count, snd_pcm_synchro_request_t *reqs,
snd_pcm_synchro_mode_t mode)
@ -203,7 +204,7 @@ int snd_pcm_synchro(snd_pcm_synchro_cmd_t cmd,
}
return ret;
}
#endif
int snd_pcm_drain(snd_pcm_t *handle)
{
@ -271,6 +272,52 @@ ssize_t snd_pcm_readv(snd_pcm_t *handle, const struct iovec *vector, unsigned lo
return handle->fast_ops->readv(handle->fast_op_arg, 0, vector, count);
}
int snd_pcm_link(snd_pcm_t *handle1, snd_pcm_t *handle2)
{
int fd1, fd2;
switch (handle1->type) {
case SND_PCM_TYPE_HW:
case SND_PCM_TYPE_PLUG:
case SND_PCM_TYPE_MULTI:
fd1 = snd_pcm_file_descriptor(handle1);
break;
default:
errno = -ENOSYS;
return -1;
}
switch (handle2->type) {
case SND_PCM_TYPE_HW:
case SND_PCM_TYPE_PLUG:
case SND_PCM_TYPE_MULTI:
fd2 = snd_pcm_file_descriptor(handle2);
break;
default:
errno = -ENOSYS;
return -1;
}
if (ioctl(fd1, SND_PCM_IOCTL_LINK, fd2) < 0)
return -errno;
return 0;
}
int snd_pcm_unlink(snd_pcm_t *handle)
{
int fd;
switch (handle->type) {
case SND_PCM_TYPE_HW:
case SND_PCM_TYPE_PLUG:
case SND_PCM_TYPE_MULTI:
fd = snd_pcm_file_descriptor(handle);
break;
default:
errno = -ENOSYS;
return -1;
}
if (ioctl(fd, SND_PCM_IOCTL_UNLINK) < 0)
return -errno;
return 0;
}
int snd_pcm_file_descriptor(snd_pcm_t *handle)
{
assert(handle);
@ -381,7 +428,6 @@ int snd_pcm_dump_setup(snd_pcm_t *handle, FILE *fp)
fprintf(fp, "xrun_mode: %s\n", assoc(setup->xrun_mode, xruns));
fprintf(fp, "time: %s\n", assoc(setup->time, onoff));
// ust_time
// sync
fprintf(fp, "buffer_size: %d\n", setup->buffer_size);
fprintf(fp, "frag_size: %d\n", setup->frag_size);
fprintf(fp, "frags: %d\n", setup->frags);