mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-11-03 09:01:52 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

pcm: Implement timestamp type setup in hw plugin

Browse source 
This patch implements the support for sw_params timestamp type in PCM
hw layer.  As gettimestamp() is still unchanged, the resultant
timstamps may be still with CLOCK_MONOTONIC even if you pass monotonic
raw type.  More fixes will follow.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-07-10 14:32:50 +02:00
parent 0d393c29a2
commit 9b716075de
1 changed files with 32 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

37
src/pcm/pcm_hw.c
View file

@ -304,7 +304,8 @@ static int snd_pcm_hw_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
if (params->info != ~0U) {
params->info &= ~0xf0000000;
params->info |= (pcm->monotonic ? SND_PCM_INFO_MONOTONIC : 0);
if (pcm->tstamp_type != SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY)
params->info |= SND_PCM_INFO_MONOTONIC;
}
return 0;
@ -328,7 +329,8 @@ static int snd_pcm_hw_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
return err;
}
params->info &= ~0xf0000000;
params->info |= (pcm->monotonic ? SND_PCM_INFO_MONOTONIC : 0);
if (pcm->tstamp_type != SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY)
params->info |= SND_PCM_INFO_MONOTONIC;
err = sync_ptr(hw, 0);
if (err < 0)
return err;
@ -435,6 +437,7 @@ static int snd_pcm_hw_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t * params)
int old_period_event = sw_get_period_event(params);
sw_set_period_event(params, 0);
if ((snd_pcm_tstamp_t) params->tstamp_mode == pcm->tstamp_mode &&
(snd_pcm_tstamp_type_t) params->tstamp_type == pcm->tstamp_type &&
params->period_step == pcm->period_step &&
params->start_threshold == pcm->start_threshold &&
params->stop_threshold == pcm->stop_threshold &&
@ -444,11 +447,33 @@ static int snd_pcm_hw_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t * params)
hw->mmap_control->avail_min = params->avail_min;
return sync_ptr(hw, 0);
}
if (params->tstamp_type == SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW &&
hw->version < SNDRV_PROTOCOL_VERSION(2, 0, 12)) {
SYSMSG("Kernel doesn't support SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW");
return -EINVAL;
}
if (params->tstamp_type == SND_PCM_TSTAMP_TYPE_MONOTONIC &&
hw->version < SNDRV_PROTOCOL_VERSION(2, 0, 5)) {
SYSMSG("Kernel doesn't support SND_PCM_TSTAMP_TYPE_MONOTONIC");
return -EINVAL;
}
if (ioctl(fd, SNDRV_PCM_IOCTL_SW_PARAMS, params) < 0) {
err = -errno;
SYSMSG("SNDRV_PCM_IOCTL_SW_PARAMS failed (%i)", err);
return err;
}
if ((snd_pcm_tstamp_type_t) params->tstamp_type != pcm->tstamp_type) {
if (hw->version < SNDRV_PROTOCOL_VERSION(2, 0, 12)) {
int on = (snd_pcm_tstamp_type_t) params->tstamp_type ==
SND_PCM_TSTAMP_TYPE_MONOTONIC;
if (ioctl(fd, SNDRV_PCM_IOCTL_TSTAMP, &on) < 0) {
err = -errno;
SNDMSG("TSTAMP failed\n");
return err;
}
}
pcm->tstamp_type = params->tstamp_type;
}
sw_set_period_event(params, old_period_event);
hw->mmap_control->avail_min = params->avail_min;
if (hw->period_event != old_period_event) {
@ -1381,7 +1406,8 @@ int snd_pcm_hw_open_fd(snd_pcm_t **pcmp, const char *name,
int fd, int mmap_emulation ATTRIBUTE_UNUSED,
int sync_ptr_ioctl)
{
int ver, mode, monotonic = 0;
int ver, mode;
snd_pcm_tstamp_type_t tstamp_type = SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY;
long fmode;
snd_pcm_t *pcm = NULL;
snd_pcm_hw_t *hw = NULL;
@ -1429,7 +1455,7 @@ int snd_pcm_hw_open_fd(snd_pcm_t **pcmp, const char *name,
SNDMSG("TTSTAMP failed\n");
return ret;
}
monotonic = 1;
tstamp_type = SND_PCM_TSTAMP_TYPE_MONOTONIC;
}
} else
#endif
@ -1471,7 +1497,8 @@ int snd_pcm_hw_open_fd(snd_pcm_t **pcmp, const char *name,
pcm->private_data = hw;
pcm->poll_fd = fd;
pcm->poll_events = info.stream == SND_PCM_STREAM_PLAYBACK ? POLLOUT : POLLIN;
pcm->monotonic = monotonic;
pcm->tstamp_type = tstamp_type;
pcm->monotonic = tstamp_type != SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY;
ret = snd_pcm_hw_mmap_status(pcm);
if (ret < 0) {