diff options
Diffstat (limited to 'src/modules/alsa/alsa-util.c')
| -rw-r--r-- | src/modules/alsa/alsa-util.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c index 43a8e829..b8d13575 100644 --- a/src/modules/alsa/alsa-util.c +++ b/src/modules/alsa/alsa-util.c @@ -43,6 +43,7 @@ #include <pulsecore/once.h> #include <pulsecore/thread.h> #include <pulsecore/conf-parser.h> +#include <pulsecore/core-rtclock.h> #include "alsa-util.h" #include "alsa-mixer.h" @@ -403,7 +404,7 @@ finish: return ret; } -int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min) { +int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min, pa_bool_t period_event) { snd_pcm_sw_params_t *swparams; snd_pcm_uframes_t boundary; int err; @@ -417,7 +418,7 @@ int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min) { return err; } - if ((err = snd_pcm_sw_params_set_period_event(pcm, swparams, 0)) < 0) { + if ((err = snd_pcm_sw_params_set_period_event(pcm, swparams, period_event)) < 0) { pa_log_warn("Unable to disable period event: %s\n", pa_alsa_strerror(err)); return err; } @@ -1308,3 +1309,26 @@ const char* pa_alsa_strerror(int errnum) { return translated; } + +pa_bool_t pa_alsa_may_tsched(pa_bool_t want) { + + if (!want) + return FALSE; + + if (!pa_rtclock_hrtimer()) { + /* We cannot depend on being woken up in time when the timers + are inaccurate, so let's fallback to classic IO based playback + then. */ + pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel."); + return FALSE; } + + if (pa_running_in_vm()) { + /* We cannot depend on being woken up when we ask for in a VM, + * so let's fallback to classic IO based playback then. */ + pa_log_notice("Disabling timer-based scheduling because running inside a VM."); + return FALSE; + } + + + return TRUE; +} |