diff options
| -rw-r--r-- | plugins/alsa/alsa-core-pcm.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/plugins/alsa/alsa-core-pcm.c b/plugins/alsa/alsa-core-pcm.c index 509e1ac..f41aed0 100644 --- a/plugins/alsa/alsa-core-pcm.c +++ b/plugins/alsa/alsa-core-pcm.c @@ -555,7 +555,21 @@ static void *writeThreadEntry(void *handle) { alsa_ringbuf_t * rbuf = pcmCopyHandle->rbuf; - const snd_pcm_sframes_t threshold = 1000; + snd_pcm_status_t *pcmOutStatus; + snd_pcm_uframes_t pcmOutSize; + + snd_pcm_sframes_t threshold; + + snd_pcm_status_alloca(&pcmOutStatus); + snd_pcm_status(pcmOut, pcmOutStatus); + pcmOutSize = snd_pcm_status_get_avail_max(pcmOutStatus); + + /* This threshold is the expected space available in the hw output buffer + * The aim is to wait to have a significant amount of space, in order to + * avoid to write to the device too often, or take a very small amount of + * frames from the ring buffer. So basically, this saves some CPU load */ + + threshold = pcmOutSize / 3; for (;;) { |