feat: add scene-based recording, e2e tests, and improved TUI state indicators

e2e/gen_tone.c

@@ -0,0 +1,78 @@
+#include <jack/jack.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static jack_port_t *output_port;
+static jack_client_t *client;
+static volatile int running = 1;
+static double phase = 0.0;
+static double freq = 440.0;
+static int sample_rate = 48000;
+static int total_samples = 0;
+static int samples_written = 0;
+
+int process(jack_nframes_t nframes, void *arg) {
+    jack_default_audio_sample_t *out =
+        (jack_default_audio_sample_t *)jack_port_get_buffer(output_port, nframes);
+    if (!out) return 0;
+    for (jack_nframes_t i = 0; i < nframes; i++) {
+        out[i] = sin(2 * M_PI * phase);
+        phase += freq / sample_rate;
+        if (phase >= 1.0) phase -= 1.0;
+        samples_written++;
+        if (total_samples > 0 && samples_written >= total_samples) {
+            running = 0;
+            break;
+        }
+    }
+    return 0;
+}
+
+void shutdown(void *arg) { running = 0; }
+
+int main(int argc, char **argv) {
+    if (argc < 3) {
+        fprintf(stderr, "Usage: gen_tone <duration_seconds> <target_port> [frequency]\n");
+        return 1;
+    }
+    double duration = atof(argv[1]);
+    const char *target = argv[2];
+    if (argc >= 4) freq = atof(argv[3]);
+
+    jack_status_t status;
+    client = jack_client_open("gen_tone", JackNoStartServer, &status);
+    if (!client) { fprintf(stderr, "Cannot open JACK client\n"); return 1; }
+
+    sample_rate = jack_get_sample_rate(client);
+    total_samples = (int)(duration * sample_rate + 0.5);
+
+    output_port = jack_port_register(client, "output",
+                                     JACK_DEFAULT_AUDIO_TYPE,
+                                     JackPortIsOutput, 0);
+    if (!output_port) { fprintf(stderr, "Cannot register port\n"); return 1; }
+
+    jack_set_process_callback(client, process, NULL);
+    jack_on_shutdown(client, shutdown, NULL);
+    if (jack_activate(client)) { fprintf(stderr, "Cannot activate client\n"); return 1; }
+
+    // Connect to target
+    const char **ports = jack_get_ports(client, target,
+                                        JACK_DEFAULT_AUDIO_TYPE,
+                                        JackPortIsInput);
+    if (!ports || !ports[0]) {
+        fprintf(stderr, "Target port '%s' not found\n", target);
+        return 1;
+    }
+    if (jack_connect(client, jack_port_name(output_port), ports[0])) {
+        fprintf(stderr, "Cannot connect port\n");
+        return 1;
+    }
+
+    while (running) sleep(1);
+
+    jack_client_close(client);
+    return 0;
+}