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Added snd_timer_async() function.

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More updates to pcm_dmix.c .
This commit is contained in:
Jaroslav Kysela 2003-02-06 19:15:53 +00:00
parent 7c5e5f5728
commit 757785fece
5 changed files with 125 additions and 32 deletions
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77
src/pcm/pcm_dmix.c
View file

@ -48,6 +48,12 @@
const char *_snd_module_pcm_dmix = "";
#endif
/*
*
*/
int snd_timer_async(snd_timer_t *timer, int sig, pid_t pid);
/*
*
*/
@ -432,24 +438,51 @@ static int client_discard(snd_pcm_dmix_t *dmix)
return 0;
}
/*
* ring buffer operation
*/
/*
* synchronize shm ring buffer with hardware
*/
static void snd_pcm_dmix_sync_ptr(snd_pcm_t *pcm, snd_pcm_uframes_t size)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
snd_pcm_uframes_t appl_ptr;
/* get the start of update area */
appl_ptr = dmix->appl_ptr - size;
if (appl_ptr > pcm->boundary)
appl_ptr += pcm->boundary;
}
/*
* plugin implementation
*/
static int snd_pcm_dmix_nonblock(snd_pcm_t *pcm, int nonblock)
static int snd_pcm_dmix_nonblock(snd_pcm_t *pcm, int nonblock ATTRIBUTE_UNUSED)
{
/* value is cached for us in pcm->mode (SND_PCM_NONBLOCK flag) */
return 0;
}
static int snd_pcm_dmix_async(snd_pcm_t *pcm, int sig, pid_t pid)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
return snd_timer_async(dmix->timer, sig, pid);
}
static int snd_pcm_dmix_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
memset(info, 0, sizeof(*info));
info->stream = pcm->stream;
info->card = -1;
/* FIXME: fill this with something more useful: we know the hardware name */
strncpy(info->id, pcm->name, sizeof(info->id));
strncpy(info->name, pcm->name, sizeof(info->name));
strncpy(info->subname, pcm->name, sizeof(info->subname));
info->subdevices_count = 1;
return 0;
}
@ -499,26 +532,25 @@ static int snd_pcm_dmix_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
static int snd_pcm_dmix_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
// snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
}
static int snd_pcm_dmix_hw_free(snd_pcm_t *pcm)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
// snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
}
static int snd_pcm_dmix_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t * params)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
// snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
}
static int snd_pcm_dmix_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * info)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
return snd_pcm_channel_info_shm(pcm, info, -1);
}
static int snd_pcm_dmix_status(snd_pcm_t *pcm, snd_pcm_status_t * status)
@ -595,33 +627,35 @@ static int snd_pcm_dmix_resume(snd_pcm_t *pcm)
static snd_pcm_sframes_t snd_pcm_dmix_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size)
{
return -ENODEV;
int res = snd_pcm_mmap_writei(pcm, buffer, size);
snd_pcm_dmix_sync_ptr(pcm, size);
return res;
}
static snd_pcm_sframes_t snd_pcm_dmix_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
{
return -ENODEV;
int res = snd_pcm_mmap_writen(pcm, bufs, size);
snd_pcm_dmix_sync_ptr(pcm, size);
return res;
}
static snd_pcm_sframes_t snd_pcm_dmix_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size)
static snd_pcm_sframes_t snd_pcm_dmix_readi(snd_pcm_t *pcm ATTRIBUTE_UNUSED, void *buffer ATTRIBUTE_UNUSED, snd_pcm_uframes_t size ATTRIBUTE_UNUSED)
{
return -ENODEV;
}
static snd_pcm_sframes_t snd_pcm_dmix_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size)
static snd_pcm_sframes_t snd_pcm_dmix_readn(snd_pcm_t *pcm ATTRIBUTE_UNUSED, void **bufs ATTRIBUTE_UNUSED, snd_pcm_uframes_t size ATTRIBUTE_UNUSED)
{
return -ENODEV;
}
static int snd_pcm_dmix_mmap(snd_pcm_t *pcm)
static int snd_pcm_dmix_mmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
}
static int snd_pcm_dmix_munmap(snd_pcm_t *pcm)
static int snd_pcm_dmix_munmap(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
}
@ -648,16 +682,17 @@ static int snd_pcm_dmix_close(snd_pcm_t *pcm)
}
static snd_pcm_sframes_t snd_pcm_dmix_mmap_commit(snd_pcm_t *pcm,
snd_pcm_uframes_t offset ATTRIBUTE_UNUSED,
snd_pcm_uframes_t size)
snd_pcm_uframes_t offset ATTRIBUTE_UNUSED,
snd_pcm_uframes_t size)
{
snd_pcm_dmix_t *hw = pcm->private_data;
return 0;
snd_pcm_mmap_appl_forward(pcm, size);
snd_pcm_dmix_sync_ptr(pcm, size);
return size;
}
static snd_pcm_sframes_t snd_pcm_dmix_avail_update(snd_pcm_t *pcm)
static snd_pcm_sframes_t snd_pcm_dmix_avail_update(snd_pcm_t *pcm ATTRIBUTE_UNUSED)
{
snd_pcm_dmix_t *hw = pcm->private_data;
//snd_pcm_dmix_t *dmix = pcm->private_data;
return 0;
}

3
src/pcm/pcm_null.c
View file

@ -65,7 +65,7 @@ static int snd_pcm_null_async(snd_pcm_t *pcm ATTRIBUTE_UNUSED, int sig ATTRIBUTE
return -ENOSYS;
}
static int snd_pcm_null_info(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_info_t * info)
static int snd_pcm_null_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
{
memset(info, 0, sizeof(*info));
info->stream = pcm->stream;
@ -79,7 +79,6 @@ static int snd_pcm_null_info(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_info_t * i
static int snd_pcm_null_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * info)
{
snd_pcm_null_t *null = pcm->private_data;
return snd_pcm_channel_info_shm(pcm, info, -1);
}