Improve Android radio capture lifecycle, VAD and PTT controls

tools/chatgui/tests/test_radio_audio.cpp

@@ -101,6 +101,40 @@ static int pull_max_abs(int npulls) {
 int main() {
     printf("=== test_radio_audio ===\n"); fflush(stdout);
 
+    TEST("RX-only: захват выключен, приём декодируется"); {
+        int rc = radio_audio_start(GID, 0);
+        push_const(SRC_A, 1, 10000, 8);
+        int mx = pull_max_abs(16);
+        int active = radio_audio_active();
+        int talking = radio_audio_transmitting();
+        radio_audio_stop();
+        if (rc == 0 && active && !talking && mx > 1000) OK();
+        else FAIL("rc=%d active=%d talking=%d max=%d", rc, active, talking, mx);
+    }
+
+    TEST("TX stop/start mono/stereo сохраняет накопленный RX PCM"); {
+        const int npulls = 16;
+        int freqs[6] = {300, 1000, 2000, 3000, 4000, 5000};
+        uint8_t pkt[6][256];
+        int lens[6], seqs[6] = {0, 1, 2, 3, 4, 5};
+        int16_t ref[npulls * 960], result[npulls * 960];
+        int ok = 0;
+        if (encode_frames(freqs, 6, pkt, lens)) {
+            run_burst(pkt, lens, seqs, seqs, 6, ref, npulls);
+            ok = radio_audio_start(GID, 0) == 0;
+            feed_frames(pkt, lens, seqs, seqs, 6);
+            for (int ch = 1; ch <= 2; ch++) {
+                ok = (radio_audio_capture_start(GID, ch, 0) == 0) && ok;
+                radio_audio_capture_stop();
+                ok = radio_audio_active() && !radio_audio_transmitting() && ok;
+            }
+            for (int i = 0; i < npulls; i++) radio_audio_pull_pcm(GID, result + i * 960, 960);
+            ok = memcmp(ref, result, sizeof(ref)) == 0 && ok;
+            radio_audio_stop();
+        }
+        if (ok) OK(); else FAIL("TX lifecycle изменил RX или не сменил формат захвата");
+    }
+
     TEST("single-source: decode через jitter-буфер выдаёт ненулевой PCM"); {
         radio_audio_start(GID, 1);
         push_const(SRC_A, 1, 10000, 8);