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Implemented generic sync requests

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This commit is contained in:
Abramo Bagnara 2000-07-04 19:29:16 +00:00
parent 9c72daca41
commit 74832704a8
6 changed files with 55 additions and 36 deletions
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38
src/pcm/pcm.c
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@ -23,6 +23,7 @@
#include <string.h>
#include <malloc.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <sys/uio.h>
#include "pcm_local.h"
@ -167,12 +168,43 @@ int snd_pcm_go(snd_pcm_t *handle)
return handle->ops->go(handle->op_arg);
}
int snd_pcm_sync_go(snd_pcm_t *handle, snd_pcm_sync_t *sync)
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)
{
assert(handle);
return handle->ops->sync_go(handle->op_arg, sync);
snd_pcm_sync_request_t *sync_reqs;
snd_pcm_sync_t sync;
unsigned int k;
assert(reqs_count > 0 && reqs);
sync_reqs = __builtin_alloca(sizeof(*sync_reqs) * reqs_count);
switch (cmd) {
case SND_PCM_SYNCHRO_GO:
break;
default:
assert(0);
return -EINVAL;
}
sync.mode = mode;
sync.requests_count = reqs_count;
sync.requests = sync_reqs;
for (k = 0; k < reqs_count; ++k) {
switch (snd_pcm_type(reqs[k].handle)) {
case SND_PCM_TYPE_HW:
case SND_PCM_TYPE_PLUG:
sync_reqs[k].fd = snd_pcm_file_descriptor(reqs[k].handle);
break;
default:
/* Not yet implemented */
assert(0);
return -ENOSYS;
}
}
if (ioctl(sync_reqs[0].fd, SND_PCM_IOCTL_SYNC, &sync) < 0)
return -errno;
return 0;
}
int snd_pcm_drain(snd_pcm_t *handle)
{
assert(handle);