diff options
Diffstat (limited to 'drivers/pulseaudio/audio_driver_pulseaudio.cpp')
| -rw-r--r-- | drivers/pulseaudio/audio_driver_pulseaudio.cpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/pulseaudio/audio_driver_pulseaudio.cpp b/drivers/pulseaudio/audio_driver_pulseaudio.cpp index 0f91c94539..0f47949b4b 100644 --- a/drivers/pulseaudio/audio_driver_pulseaudio.cpp +++ b/drivers/pulseaudio/audio_driver_pulseaudio.cpp @@ -177,7 +177,11 @@ Error AudioDriverPulseAudio::init_device() { pa_buffer_attr attr; // set to appropriate buffer length (in bytes) from global settings - attr.tlength = pa_buffer_size * sizeof(int16_t); + // Note: PulseAudio defaults to 4 fragments, which means that the actual + // latency is tlength / fragments. It seems that the PulseAudio has no way + // to get the fragments number so we're hardcoding this to the default of 4 + const int fragments = 4; + attr.tlength = pa_buffer_size * sizeof(int16_t) * fragments; // set them to be automatically chosen attr.prebuf = (uint32_t)-1; attr.maxlength = (uint32_t)-1; @@ -336,13 +340,22 @@ void AudioDriverPulseAudio::thread_func(void *p_udata) { bytes = byte_size; } - int ret = pa_stream_write(ad->pa_str, ptr, bytes, NULL, 0LL, PA_SEEK_RELATIVE); + ret = pa_stream_write(ad->pa_str, ptr, bytes, NULL, 0LL, PA_SEEK_RELATIVE); if (ret >= 0) { byte_size -= bytes; ptr = (const char *)ptr + bytes; } } else { - pa_mainloop_iterate(ad->pa_ml, 1, NULL); + ret = pa_mainloop_iterate(ad->pa_ml, 0, NULL); + if (ret == 0) { + // If pa_mainloop_iterate returns 0 sleep for 1 msec to wait + // for the stream to be able to process more bytes + ad->unlock(); + + OS::get_singleton()->delay_usec(1000); + + ad->lock(); + } } } } |