Implement fix for glitching WASAPI playback #303

diff --git a/src/hostapi/wasapi/pa_win_wasapi.c b/src/hostapi/wasapi/pa_win_wasapi.c
index f4b31862c045246d93d25bcae5b1bb8b17e8012e..7354f8ab67b30f8025e94342145d04bc152aba0e 100644 (file)
--- a/src/hostapi/wasapi/pa_win_wasapi.c
+++ b/src/hostapi/wasapi/pa_win_wasapi.c
@@ -5764,6 +5764,7 @@ PA_THREAD_FUNC ProcThreadPoll(void *param)
        // Calculate timeout for next polling attempt.
        sleep_ms_in  = GetFramesSleepTime(stream->in.framesPerHostCallback / WASAPI_PACKETS_PER_INPUT_BUFFER, stream->in.wavex.Format.nSamplesPerSec);
        sleep_ms_out = GetFramesSleepTime(stream->out.framesPerBuffer, stream->out.wavex.Format.nSamplesPerSec);
+       sleep_ms_out /= 2; // wait only for half of the buffer
 
        // WASAPI Input packets tend to expire very easily, let's limit sleep time to 2 milliseconds
        // for all cases. Please propose better solution if any.
@@ -5776,6 +5777,7 @@ PA_THREAD_FUNC ProcThreadPoll(void *param)
        {
                //sleep_ms_in = GetFramesSleepTime((stream->bufferProcessor.framesPerUserBuffer ? stream->bufferProcessor.framesPerUserBuffer : stream->in.params.frames_per_buffer), stream->in.wavex.Format.nSamplesPerSec);
                sleep_ms_out = GetFramesSleepTime((stream->bufferProcessor.framesPerUserBuffer ? stream->bufferProcessor.framesPerUserBuffer : stream->out.params.frames_per_buffer), stream->out.wavex.Format.nSamplesPerSec);
+               sleep_ms_out /= 2; // wait only for half of the buffer
        }
 
        // Choose smallest
@@ -5789,6 +5791,7 @@ PA_THREAD_FUNC ProcThreadPoll(void *param)
        {
                sleep_ms_in  = GetFramesSleepTimeMicroseconds(stream->in.framesPerHostCallback / WASAPI_PACKETS_PER_INPUT_BUFFER, stream->in.wavex.Format.nSamplesPerSec);
                sleep_ms_out = GetFramesSleepTimeMicroseconds((stream->bufferProcessor.framesPerUserBuffer ? stream->bufferProcessor.framesPerUserBuffer : stream->out.params.frames_per_buffer), stream->out.wavex.Format.nSamplesPerSec);
+               sleep_ms_out /= 2; // wait only for half of the buffer
 
                // Choose smallest
                if ((sleep_ms_in != 0) && (sleep_ms_out != 0))