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kvm
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189 Commits

Author SHA1 Message Date
Alex P 3b609d2b67 refactor: Simplify audio implementation 
Remove dynamic gain code and rely on Opus encoder quality improvements:
- Increase Opus complexity from 2 to 5 for better quality
- Change bandwidth from FULLBAND (20kHz) to SUPERWIDEBAND (16kHz) for better quality at 128kbps
- Disable FEC to allocate all bits to audio quality
- Increase ALSA buffer from 40ms to 80ms for stability

The dynamic gain code was adding complexity without solving the underlying
issue: TC358743 HDMI chip captures digital audio at whatever volume the
source outputs. Users should adjust volume at the source or in their browser.
 2025-10-07 00:25:45 +03:00
Alex P 639eecbb93 fix: Add noise gate to prevent amplifying silence artifacts 
Add noise gate threshold at peak > 256 (-42dB) to prevent dynamic gain
from amplifying quantization noise and hardware noise floor. This fixes
crackling, buzzing, and static-like noise when HDMI audio is at very
low volume or during silence.

Without the gate, signals below -42dB (peak < 256) would get 8x gain
applied, amplifying noise floor to audible levels. Now these signals
pass through unmodified, eliminating the artifacts.
 2025-10-06 22:23:23 +03:00
Alex P 8bd370668c fix: Address linting errors in audio code 
- Check SetReadDeadline error in IPC client
- Explicitly ignore Kill() error (process may be dead)
- Remove init() function and rely on explicit ExtractEmbeddedBinaries() call
 2025-10-06 22:12:20 +03:00
Alex P 78c3dc3a1e Refactor: Simplify / rewrite Audio 2025-10-06 21:59:44 +03:00
Alex P 2aa07e3860 [WIP] Updates: reduce PR complexity 2025-10-02 00:08:42 +03:00
Alex P c2d343b0dc [WIP] Updates: reduce PR complexity 2025-10-01 22:54:37 +03:00
Alex P 78a9e6d566 [WIP] Updates: reduce PR complexity 2025-10-01 22:07:45 +03:00
Alex P b1b64fc8d2 [WIP] Updates: use native C binaries for audio 2025-10-01 20:13:13 +03:00
Alex P 7fc363789e Updates: integrate all dev branch changes 2025-10-01 15:50:39 +03:00
Alex P c42432b129 [WIP] Updates: update build flows to work with the CGO jetkvm_native 2025-10-01 10:04:42 +03:00
Alex P 51a8ed958d Cleanup: remove silence detection 2025-09-30 14:32:36 +00:00
Alex P 186f3cfbe0 [WIP] Cleanup: cleanup audio code after HDMI switch 2025-09-30 13:32:56 +00:00
Alex P 11830e1123 [WIP] Fix: crackling sound when seeking forward after migrating to HDMI Audio 2025-09-30 13:14:15 +00:00
Alex P a0685877bc [WIP] Fix: crackling sound when seeking forwars 2025-09-30 13:11:16 +00:00
Alex P 5d24eba58e [WIP] Fix: crackling sound when seeking forwars 2025-09-30 12:58:49 +00:00
Alex P f891f14152 [WIP] Updates: simplify audio system 2025-09-30 12:36:41 +00:00
Alex P 918cdba0b7 Updates: adjust gain to avoid audio artifacts 2025-09-30 12:05:03 +00:00
Alex P 4afaf6023a [WIP] Updates: simplify audio system 2025-09-30 11:41:17 +00:00
Alex P 06399820c4 [WIP] Updates: simplify audio system 2025-09-30 11:03:34 +00:00
Alex P d015542088 [WIP] Updates: simplify audio system 2025-09-30 09:36:19 +00:00
Alex P 36b8f74087 [WIP] Updates: simplify audio system 2025-09-30 09:08:55 +00:00
Alex P c8401cc483 [WIP] Updates: simplify audio system 2025-09-30 09:04:07 +00:00
Alex P e5357a6a11 [WIP] Cleanup: PR Cleanup 2025-09-20 22:57:19 +03:00
Alex P fa0626db0a [WIP] Cleanup: PR Cleanup 2025-09-20 01:14:41 +03:00
Alex P e944df8e82 [WIP] Cleanup: PR Cleanup 2025-09-20 00:57:57 +03:00
Alex P c6428818a6 [WIP] Cleanup: PR Cleanup 2025-09-20 00:54:14 +03:00
Alex P c7dd1da73a [WIP] Cleanup: PR Cleanup 2025-09-20 00:21:09 +03:00
Alex P bf50669e3a perf(audio): add ARM NEON SIMD optimizations for audio processing 
Implement SIMD-optimized audio operations using ARM NEON for Cortex-A7 targets
Update Makefile and CI configuration to support NEON compilation flags
Add SIMD implementations for common audio operations including:
- Sample clearing and interleaving
- Volume scaling and format conversion
- Channel manipulation and balance adjustment
- Endianness swapping and prefetching
 2025-09-16 18:18:19 +00:00
Alex P c6951fc57e PR Review Optimization: As recommended, use ternary operators instead of if/else for better readability 2025-09-16 16:17:56 +03:00
Alex P b9733566bc Consistency: keep if block multi-line 2025-09-16 16:08:16 +03:00
Alex P 755e1cef28 Cleanup: removed redundant code 2025-09-16 16:03:20 +03:00
Alex P 53e8422ac7 Cleanup: removed redundant code 2025-09-16 16:00:55 +03:00
Alex P b03a9f1171 Fix: remove misplaced const 2025-09-16 15:52:53 +03:00
Alex P fe19379ef1 Cleanup, Optimizations: Small aaudio optimizations 2025-09-16 15:46:55 +03:00
Alex P 7615b5c3ef Cleanup, Optimizations: Small aaudio optimizations 2025-09-16 15:45:03 +03:00
Alex P ab6a918219 Cleanup, Optimizations: Small aaudio optimizations 2025-09-16 15:37:23 +03:00
Alex P 6d2b8e585a Cleanup: removed redundant code, comments, etc. 2025-09-16 15:31:10 +03:00
Alex P 717d84672f Cleanup: removed redundant code, comments, etc. 2025-09-16 15:23:16 +03:00
Alex P d810f06417 [WIP] Cleanup: removed redundant code 2025-09-16 15:17:49 +03:00
Alex P 26ac27f33d [WIP] Cleanup: removed redundant code 2025-09-16 15:14:00 +03:00
Alex P 410f10ff39 [WIP] Maintainability Improvement: Add debug logging throughout the audio system for easy debugging and troubleshooting 2025-09-16 15:05:08 +03:00
Alex P bbeeaf2a00 [WIP] Maintainability Improvement: Add debug logging throughout the audio system for easy debugging and troubleshooting 2025-09-16 11:27:18 +03:00
Alex P 21d7c87fc7 [WIP] Add debug logging throughout the audio system 2025-09-16 11:26:48 +03:00
Alex P 53b5a0a90c [WIP] Maintainability: Add debug / trace logs to make it easy to debug audio input issues 2025-09-16 11:11:18 +03:00
Alex P 1d275099d2 [WIP] Cleanup: function naming 2025-09-16 07:33:34 +00:00
Alex P 1fca01c64d [WIP] Cleanup: remove unnecessary complexity 2025-09-15 23:00:03 +00:00
Alex P aa8a5fa7e7 [WIP] Simplification: PR Simplification 2025-09-16 00:44:26 +03:00
Alex P 48c62c5912 Fix: pcm_snd_wait won't work when device is busy 2025-09-16 00:32:19 +03:00
Alex P 97b2fe0c32 [WIP] Optimizations: Optimize audio system 2025-09-15 21:22:02 +00:00
Alex P 7c4f884704 [WIP] Fix: add commented code back 2025-09-15 12:04:24 +00:00