Request 20 ms call capture and test output latency reports

tools/chatgui/src/call_audio_engine.cpp

@@ -59,6 +59,8 @@ bool CallAudioEngine::openCapture() {
     if (!context) return false;
     ma_device_config config = ma_device_config_init(ma_device_type_capture);
     config.capture.format = ma_format_s16; config.capture.channels = 1; config.sampleRate = CALL_AUDIO_SAMPLE_RATE;
+    config.periodSizeInMilliseconds = CALL_AUDIO_FRAME_MS;
+    DEBUG_INFO(DEBUG_CATEGORY_CALL, "CallAudio: capture requested period=%dms; actual period reported by device", CALL_AUDIO_FRAME_MS);
     ma_device_id id;
     bool selected = SoundManager::deviceId(m_captureId, &id);
     if (selected) config.capture.pDeviceID = &id;

tools/chatgui/tests/test_audio_diagnostics.cpp

@@ -39,6 +39,19 @@ int main() {
     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);
+    // Отсутствующий timestamp не превращается в измеренную нулевую задержку.
+    audio_playback_timing output{30000, 1000, 1200, 48000, 1};
+    audio_diag_playback_clock(nullptr, &output);
+    output.latency_us = -1000; output.frames = 960;
+    audio_diag_playback_clock(nullptr, &output);
+    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);
+    report(devices, now(CLOCK_MONOTONIC), 1.0);
+    assert(capture.playbackBlocks == 0 && capture.playbackMeasured == 0 && capture.playbackMaxBlock == 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)