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wasapi: Improvement to lower possible cases of underruns due to coarse system timer and time-hungry user-side processing.. #307

Merged
merged 1 commit into from
Oct 3, 2020
Merged

wasapi: Improvement to lower possible cases of underruns due to coarse system timer and time-hungry user-side processing.. #307

merged 1 commit into from
Oct 3, 2020
+314 −281

Commits on Oct 3, 2020

  1. wasapi: Improve stability of playback in Polling Shared mode with a l… 

    …ow host latency requsted (22 ms):

- Implement workaround for system timer coarse granularity causing underruns by using timeBeginPeriod/timeEndPeriod APIs inside the Event and Poll thread handlers.
- Update next sleep time of the Poll rendering loop dynamically depending on time taken for processing/rendering of audio data into the available host buffer to avoid underruns and fit processing time into periodic polling time slots.
- Add support for time slots logging in Poll mode if PA_WASAPI_LOG_TIME_SLOTS is defined. Fixed audible glitches by preloading the whole host buffer before stream is started.
- Fix audible glitches on stream start by preloading the whole host buffer before stream is started.
    @dmitrykos
    dmitrykos committed Oct 3, 2020
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