radio: add activation controls, live VAD meters and signal diagnostics

tools/chatgui/tests/test_voice_audio_io.cpp

@@ -14,6 +14,7 @@ extern "C" {
 #include <cstdio>
 #include <cstdlib>
 #include <algorithm>
+#include <cstring>
 #define REQUIRE(x) do { if (!(x)) { fprintf(stderr, "voice-io:%d %s\n", __LINE__, #x); abort(); } } while (0)
 static std::mutex mutex;
 static std::vector<int16_t> capture, transmitted;
@@ -21,6 +22,10 @@ static std::vector<uint8_t> masks;
 static bool talking;
 static std::atomic<int> pulls{0}, blocks{0};
 static std::atomic<bool> stall{false}, stalled{false};
+static std::atomic<bool> idleReported{false};
+static void capture_diagnostic(int, const char*, const char* message) {
+    if (std::strstr(message, "voice-io: capture stalled")) idleReported = true;
+}
 static std::atomic<uint64_t> output_position{0}, output_delay{0};
 extern "C" void radio_audio_playback_progress(uint64_t, uint64_t position, uint64_t delay) {
     output_delay = delay; output_position = position;
@@ -58,6 +63,15 @@ int main() {
     debug_config_init(); debug_set_level(DEBUG_LEVEL_WARN);
     VoiceAudioIo voice;
     std::array<int16_t, 960> pcm{}; pcm.fill(1234);
+    // Отсутствие PCM должно попадать в лог без необходимости ждать следующего кадра.
+    debug_set_log_hook(capture_diagnostic);
+    REQUIRE(voice.start(VoiceAudioIo::Kind::Radio, 7) && voice.startCapture(1, false));
+    await([] { return idleReported.load(); });
+    voice.capture(pcm.data(), 960, 0);
+    await([] { return blocks.load() == 1; });
+    voice.stop(); debug_set_log_hook(nullptr);
+    REQUIRE(capture.size() == 960 && capture.front() == 1234 && capture.back() == 1234);
+    reset(); pulls = 0; output_position = 0;
     // Выдача RX worker не подтверждает вывод; частичный callback сохраняет позицию и backend delay.
     REQUIRE(voice.start(VoiceAudioIo::Kind::Radio, 7));
     await([] { return pulls.load() >= 2; });