audio: WASAPI exclusive resampling, buffer size increase options (#727)
## Link to GitHub Issue or related Pull Request, if one exists n/a ## Description of change Resampler: Implement resampler for exclusive mode streams, as we are seeing more and more devices - not just laptops but onboard audio devices - that only support 48khz and not 44.1khz. Should work with volume boost (gain calculated inside resample) and also downmixer (hands off intermediate scratch buffers). Buffer size increase: By default many of these games request a tiny buffer when in shared mode (TDJ uses 3ms). On some audio setup this results in crackling due to underflow. Add an option to forcibly increase the buffer size. ## Testing With resampler set to 48kHz and buffer set to 20ms I can reliably boot and play IIDX on my display port monitor's speakers; previously this wasn't possible. IIDX is event-driven. Tested SDVX7 as well at 48kHz, which opens timer-driven streams.
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@@ -73,11 +73,7 @@ HRESULT STDMETHODCALLTYPE DummyIAudioClient::Initialize(
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// verbose output
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log_info("audio::wasapi", "IAudioClient::Initialize hook hit");
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log_info("audio::wasapi", "... ShareMode : {}", share_mode_str(ShareMode));
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log_info("audio::wasapi", "... StreamFlags : {}", stream_flags_str(StreamFlags));
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log_info("audio::wasapi", "... hnsBufferDuration : {}", hnsBufferDuration);
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log_info("audio::wasapi", "... hnsPeriodicity : {}", hnsPeriodicity);
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print_format(pFormat);
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print_format(ShareMode, StreamFlags, hnsBufferDuration, hnsPeriodicity, pFormat);
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CHECK_RESULT(this->backend->on_initialize(
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&ShareMode,
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