Reduce Linux voice capture latency and verify device timing

tools/chatgui/tests/test_audio_diagnostics.cpp

@@ -32,13 +32,16 @@ int main() {
     assert(capture.captureSequence == 1440 && capture.captureFrames == 1440 && capture.captureBlocks == 3);
     assert(capture.captureJumps == 1 && capture.captureMaxDelta == 4000 && capture.captureMinDelta == 0);
     assert(capture.captureMissing == 480 && capture.captureEstimated == 0);
-    assert(capture.captureMinLatency == 96000 && capture.captureMaxLatency == 100000);
+    assert(capture.captureLatency.low == 96000 && capture.captureLatency.high == 100000);
+    assert(capture.captureLatency.count == 3 && capture.captureLatency.average() == 97333);
+    assert(capture.captureBlock.low == 10000 && capture.captureBlock.high == 10000);
     report(devices, now(CLOCK_MONOTONIC), 1.0);
     timing.first_us = 1034000; timing.missing = 0; timing.measured = 0;
     audio_diag_capture_clock(nullptr, &timing);
     assert(take(e)); consume(e, devices);
     assert(capture.captureJumps == 0 && capture.captureMissing == 0 && capture.captureEstimated == 1);
     assert(capture.captureSequence == 1920 && capture.captureBlocks == 1 && capture.captureFrames == 480);
+    assert(capture.captureLatency.count == 0 && capture.captureBlock.count == 1);
     // Отсутствующий timestamp не превращается в измеренную нулевую задержку.
     audio_playback_timing output{30000, 1000, 1200, 48000, 1};
     audio_diag_playback_clock(nullptr, &output);
@@ -47,11 +50,12 @@ int main() {
     output.latency_us = 999999; output.measured = 0;
     audio_diag_playback_clock(nullptr, &output);
     while (take(e)) consume(e, devices);
-    assert(capture.playbackBlocks == 3 && capture.playbackFrames == 3120 && capture.playbackMeasured == 2);
-    assert(capture.playbackMinLatency == -1000 && capture.playbackMaxLatency == 30000);
-    assert(capture.playbackMaxBlock == 25000 && capture.playbackMaxConverter == 1000);
+    assert(capture.playbackBlocks == 3 && capture.playbackFrames == 3120 && capture.playbackLatency.count == 2);
+    assert(capture.playbackLatency.low == -1000 && capture.playbackLatency.high == 30000);
+    assert(capture.playbackBlock.high == 25000 && capture.playbackMaxConverter == 1000);
+    assert(capture.playbackLatency.average() == 14500 && capture.playbackBlock.low == 20000);
     report(devices, now(CLOCK_MONOTONIC), 1.0);
-    assert(capture.playbackBlocks == 0 && capture.playbackMeasured == 0 && capture.playbackMaxBlock == 0);
+    assert(capture.playbackBlocks == 0 && capture.playbackLatency.count == 0 && capture.playbackBlock.high == 0);
     std::vector<std::thread> workers;
     for (int p = 0; p < producers; ++p) workers.emplace_back([p, &done]() {
         for (int i = 0; i < perProducer; ++i)