Files
looper/tests/integration.c
Loic Coenen 20c0820910 refactor: use explicit pointer casts to clarify type conversions
Co-authored-by: aider (deepseek/deepseek-reasoner) <aider@aider.chat>
2026-05-09 14:46:09 +00:00

896 lines
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C
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <string.h>
#include <stdarg.h>
#include <fcntl.h>
#include <jack/jack.h>
#include <jack/midiport.h>
#include <math.h>
#include <time.h>
/* static variables for passthrough test */
static jack_port_t *passthrough_output_port = NULL;
static jack_port_t *passthrough_input_port = NULL;
static float passthrough_phase = 0.0f;
static float passthrough_freq = 440.0f;
static int passthrough_sample_rate = 0;
static long passthrough_total_samples = 0;
static double passthrough_sum_sq = 0.0;
static volatile int passthrough_done = 0;
static volatile int beep_remaining = 0;
static volatile int bursts = 0;
static volatile int prev_above = 0;
static int continuous_sine = 0;
/* variables for MIDI injection (used by send_jack_note_on) */
static volatile int midi_inject_pending = 0;
static jack_port_t *midi_inject_port = NULL;
static jack_client_t *midi_inject_client = NULL;
static unsigned char midi_inject_note = 0;
static unsigned char midi_inject_velocity = 0;
static void safe_usleep(unsigned int usec) {
struct timespec ts;
ts.tv_sec = usec / 1000000;
ts.tv_nsec = (usec % 1000000) * 1000L;
nanosleep(&ts, NULL);
}
static int midi_inject_process(jack_nframes_t nframes, void *arg) {
(void)arg;
if (!midi_inject_port) return 0;
void *port_buf = jack_port_get_buffer(midi_inject_port, nframes);
if (!port_buf) return 0;
jack_midi_clear_buffer(port_buf);
if (!midi_inject_pending) return 0;
jack_midi_data_t *buf = jack_midi_event_reserve(port_buf, 0, 3);
if (!buf) return 0;
buf[0] = 0x90;
buf[1] = midi_inject_note;
buf[2] = midi_inject_velocity;
midi_inject_pending = 0;
return 0;
}
/* The test code uses this callback in two ways:
- For the audio passthrough test (existing function) it still works.
- For the loop test we need a version that respects the static variables
beep_remaining and bursts (declared in test_looper_looping).
We change the existing function to also handle those globals. */
static int passthrough_process(jack_nframes_t nframes, void *arg) {
(void)arg;
jack_default_audio_sample_t *out =
(jack_default_audio_sample_t *)jack_port_get_buffer(passthrough_output_port, nframes);
const jack_default_audio_sample_t *in =
(const jack_default_audio_sample_t *)jack_port_get_buffer(passthrough_input_port, nframes);
if (!out || !in) return 0;
float *f_out = (float *)out;
const float *f_in = (const float *)in;
for (jack_nframes_t i = 0; i < nframes; i++) {
/* generate beep while beep_remaining > 0 or continuous sine */
float out_val;
if (continuous_sine || beep_remaining > 0) {
out_val = sinf(passthrough_phase);
passthrough_phase += 2.0f * (float)M_PI * passthrough_freq / passthrough_sample_rate;
if (passthrough_phase > 2.0f * M_PI)
passthrough_phase -= 2.0f * M_PI;
if (beep_remaining > 0) beep_remaining--;
} else {
out_val = 0.0f;
}
f_out[i] = out_val;
/* detect bursts on the input (looper output) */
float sample = f_in[i];
int above = (fabsf(sample) > 0.05f);
if (above && !prev_above) {
bursts++;
}
prev_above = above;
passthrough_sum_sq += (double)f_in[i] * (double)f_in[i];
passthrough_total_samples++;
}
if (passthrough_total_samples >= passthrough_sample_rate * 2) {
passthrough_done = 1;
}
return 0;
}
/*
* Integration test for the JACK looper.
*
* Uses SIGUSR1 to request the looper to report its current state and exit.
* Verifies that MIDI noteon and clock messages produce correct state transitions.
*/
#define STATE_IDLE 0
#define STATE_RECORD 1
#define STATE_LOOPING 2
#define STATE_PAUSED 3
#define WAIT_SECONDS 1
/*
* Start a fresh instance of the looper, wait for JACK ports to appear,
* return its PID, or -1 on failure.
*/
static pid_t start_looper(void) {
pid_t pid = fork();
if (pid < 0) {
perror("fork");
return -1;
}
if (pid == 0) {
/* child: suppress stderr messages */
close(2);
open("/dev/null", O_WRONLY);
execl("./looper", "looper", NULL);
perror("execl");
_exit(1);
}
printf("Started looper (pid %d)\n", (int)pid);
sleep(3); /* wait for JACK ports to register */
return pid;
}
static int test_audio_pass_through(void) {
printf("Test: audio passthrough (connectivity)\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_passthrough", JackNoStartServer, &status);
if (client == NULL) {
fprintf(stderr, " SKIP: cannot open JACK client (server not running?)\n");
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
return 1;
}
jack_port_t *output_port = jack_port_register(client, "output",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
jack_port_t *input_port = jack_port_register(client, "input",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
if (!output_port || !input_port) {
fprintf(stderr, " FAIL: could not register ports\n");
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000);
const char *looper_input = "looper:input";
const char *looper_output = "looper:output";
char my_output[64], my_input[64];
snprintf(my_output, sizeof(my_output), "test_passthrough:output");
snprintf(my_input, sizeof(my_input), "test_passthrough:input");
if (jack_connect(client, my_output, looper_input) != 0) {
fprintf(stderr, " FAIL: cannot connect test_passthrough:output -> looper:input\n");
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
return 1;
}
if (jack_connect(client, looper_output, my_input) != 0) {
fprintf(stderr, " FAIL: cannot connect looper:output -> test_passthrough:input\n");
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
return 1;
}
passthrough_output_port = output_port;
passthrough_input_port = input_port;
passthrough_phase = 0.0f;
passthrough_freq = 440.0f;
passthrough_sample_rate = jack_get_sample_rate(client);
passthrough_total_samples = 0;
passthrough_sum_sq = 0.0;
passthrough_done = 0;
continuous_sine = 1; /* enable continuous tone for this test */
beep_remaining = 0; /* not needed */
jack_set_process_callback(client, passthrough_process, NULL);
if (jack_activate(client) != 0) {
fprintf(stderr, " FAIL: cannot activate client\n");
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(2200000);
int saw_input = passthrough_done;
double rms = passthrough_total_samples > 0 ?
sqrt(passthrough_sum_sq / passthrough_total_samples) : 0.0;
jack_deactivate(client);
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
if (!saw_input) {
fprintf(stderr, " FAIL: looper did not produce output (no callback run?)\n");
return 1;
}
if (rms < 0.001) {
fprintf(stderr, " FAIL: looper output RMS too small (%.6f)\n", rms);
return 1;
}
printf(" PASS (RMS %.6f)\n", rms);
return 0;
}
/* Helper: open a transient JACK client, send a MIDI noteon, close */
static int send_jack_note_on(const char *target_port, unsigned char note, unsigned char velocity) {
midi_inject_note = note;
midi_inject_velocity = velocity;
jack_status_t st;
midi_inject_client = jack_client_open("test_midi_inject", JackNoStartServer, &st);
if (!midi_inject_client) return -1;
midi_inject_port = jack_port_register(midi_inject_client, "out",
JACK_DEFAULT_MIDI_TYPE,
JackPortIsOutput, 0);
if (!midi_inject_port) {
jack_client_close(midi_inject_client);
midi_inject_client = NULL;
return -1;
}
char src[64];
snprintf(src, sizeof(src), "test_midi_inject:out");
if (jack_connect(midi_inject_client, src, target_port) != 0) {
jack_client_close(midi_inject_client);
midi_inject_client = NULL;
midi_inject_port = NULL;
return -1;
}
midi_inject_pending = 1; /* signal before activation */
jack_set_process_callback(midi_inject_client, midi_inject_process, NULL);
if (jack_activate(midi_inject_client) != 0) {
jack_client_close(midi_inject_client);
midi_inject_client = NULL;
midi_inject_port = NULL;
return -1;
}
/* wait for the process callback to clear the flag (event delivered) */
for (int attempts = 0; attempts < 50; attempts++) { /* ~50 * 10ms = 500ms */
safe_usleep(10000);
if (!midi_inject_pending) break;
}
jack_deactivate(midi_inject_client);
jack_client_close(midi_inject_client);
midi_inject_client = NULL;
midi_inject_port = NULL;
return 0;
}
/*
* Full loop recording test:
* 1. start looper
* 2. open JACK test client (audio)
* 3. send noteon to move IDLE->RECORD
* 4. generate a short 440 Hz beep (~0.1 s) while recording
* 5. send noteon to move RECORD->LOOPING
* 6. monitor looper output for the beep being repeated (≥3 times)
*/
static int test_looper_looping(void) {
printf("Test: loop recording and playback (expect ≥3 repetitions)\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_looping", JackNoStartServer, &status);
if (!client) {
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " SKIP: JACK not running?\n");
return 1;
}
jack_port_t *audio_out = jack_port_register(client, "out",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
jack_port_t *audio_in = jack_port_register(client, "in",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
if (!audio_out || !audio_in) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000); /* wait for ports to appear */
/* connect test:out -> looper:input, looper:output -> test:in */
char my_out[64], my_in[64];
snprintf(my_out, sizeof(my_out), "test_looping:out");
snprintf(my_in, sizeof(my_in), "test_looping:in");
if (jack_connect(client, my_out, "looper:input") ||
jack_connect(client, "looper:output", my_in)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
/* first noteon: IDLE -> RECORD */
if (send_jack_note_on("looper:control", 1, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(500000); /* allow state to change (500ms) */
int sr = jack_get_sample_rate(client);
continuous_sine = 0; /* disable continuous tone */
beep_remaining = (int)(0.1f * sr); /* 0.1 second beep */
bursts = 0;
prev_above = 0;
passthrough_output_port = audio_out;
passthrough_input_port = audio_in;
passthrough_phase = 0.0f;
passthrough_freq = 440.0f;
passthrough_sample_rate = sr;
passthrough_total_samples = 0;
passthrough_sum_sq = 0.0;
passthrough_done = 0;
jack_set_process_callback(client, passthrough_process, NULL);
if (jack_activate(client)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(150000); /* let beep start */
/* ensure beep is fully captured */
safe_usleep(800000); /* 0.8s after start of beep */
if (send_jack_note_on("looper:control", 1, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
/* wait enough time for several loops (4 seconds to be safe) */
safe_usleep(4000000);
jack_deactivate(client);
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
int got_bursts = bursts;
printf(" detected bursts: %d\n", got_bursts);
if (got_bursts < 3) {
fprintf(stderr, " FAIL: expected ≥3 bursts, got %d\n", got_bursts);
return 1;
}
printf(" PASS (at least 3 repetitions)\n");
return 0;
}
/* test multiple channels */
static int test_multiple_channels(void) {
printf("Test: dynamic channel creation via MIDI command\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_multi", JackNoStartServer, &status);
if (!client) {
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " SKIP: no JACK\n");
return 1;
}
if (send_jack_note_on("looper:control", 60, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send note 60 failed\n");
return 1;
}
/* wait long enough for the looper's main loop to process the add command
(it sleeps for 1 second between checks, so 1.5 s is safe) */
safe_usleep(1500000);
int found = 0;
const char **ports = jack_get_ports(client, NULL, JACK_DEFAULT_AUDIO_TYPE, 0);
if (ports) {
for (int i = 0; ports[i]; i++) {
if (strstr(ports[i], "looper:channel1_input")) {
found = 1;
break;
}
}
jack_free(ports);
}
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
if (!found) {
fprintf(stderr, " FAIL: channel1_input port not created after add command\n");
return 1;
}
printf(" PASS (channel created)\n");
return 0;
}
/* test controlkey modifier (note 64 + note 62) */
static int test_control_key_modifier(void) {
printf("Test: controlkey modifier triggers state transition via note 62\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_ctrl_key", JackNoStartServer, &status);
if (!client) {
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " SKIP: no JACK\n");
return 1;
}
/* connect same as in test_looper_looping but no beep generation */
jack_port_t *audio_out = jack_port_register(client, "out",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
jack_port_t *audio_in = jack_port_register(client, "in",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
if (!audio_out || !audio_in) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000);
char my_out[64], my_in[64];
snprintf(my_out, sizeof(my_out), "test_ctrl_key:out");
snprintf(my_in, sizeof(my_in), "test_ctrl_key:in");
if (jack_connect(client, my_out, "looper:input") ||
jack_connect(client, "looper:output", my_in)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
/* First send note 64 (control key) */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send note 64 failed\n");
return 1;
}
safe_usleep(200000);
/* Now send note 62 (toggle channel 0) */
if (send_jack_note_on("looper:control", 62, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send note 62 failed\n");
return 1;
}
/* Wait for looper to enter RECORD and detect audio */
int sr = jack_get_sample_rate(client);
continuous_sine = 0;
beep_remaining = (int)(0.1f * sr); /* 0.1 second beep */
bursts = 0;
prev_above = 0;
passthrough_output_port = audio_out;
passthrough_input_port = audio_in;
passthrough_phase = 0.0f;
passthrough_freq = 440.0f;
passthrough_sample_rate = sr;
passthrough_total_samples = 0;
passthrough_sum_sq = 0.0;
passthrough_done = 0;
jack_set_process_callback(client, passthrough_process, NULL);
if (jack_activate(client)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000); /* allow beep */
/* send note 62 again under control key to move RECORD->LOOPING */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: control key resend\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 62, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send note 62 for loop\n");
return 1;
}
safe_usleep(2000000);
jack_deactivate(client);
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
int got_bursts = bursts;
printf(" detected bursts: %d\n", got_bursts);
if (got_bursts < 3) {
fprintf(stderr, " FAIL: expected ≥3 bursts, got %d\n", got_bursts);
return 1;
}
printf(" PASS (controlkey modifier works)\n");
return 0;
}
/* test bind channel */
static int test_bind_channel(void) {
printf("Test: controlkey bind channel (note 0) and toggle\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_bind", JackNoStartServer, &status);
if (!client) {
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " SKIP: no JACK\n");
return 1;
}
jack_port_t *audio_out = jack_port_register(client, "out",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
jack_port_t *audio_in = jack_port_register(client, "in",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
if (!audio_out || !audio_in) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000);
char my_out[64], my_in[64];
snprintf(my_out, sizeof(my_out), "test_bind:out");
snprintf(my_in, sizeof(my_in), "test_bind:in");
if (jack_connect(client, my_out, "looper:input") ||
jack_connect(client, "looper:output", my_in)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
/* Send control key + note 0 to bind to channel 0 */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send control key failed\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 0, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send bind note 0 failed\n");
return 1;
}
safe_usleep(200000);
/* Now toggle using control+note62 should toggle channel 0 */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send control key again failed\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 62, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send toggle note 62 failed\n");
return 1;
}
/* Wait and detect bursts as before */
int sr = jack_get_sample_rate(client);
continuous_sine = 0;
beep_remaining = (int)(0.1f * sr);
bursts = 0;
prev_above = 0;
passthrough_output_port = audio_out;
passthrough_input_port = audio_in;
passthrough_phase = 0.0f;
passthrough_freq = 440.0f;
passthrough_sample_rate = sr;
passthrough_total_samples = 0;
passthrough_sum_sq = 0.0;
passthrough_done = 0;
jack_set_process_callback(client, passthrough_process, NULL);
if (jack_activate(client)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000); /* allow beep */
/* send control+note62 again to move RECORD->LOOPING */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: control key for loop\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 62, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: toggle for loop\n");
return 1;
}
safe_usleep(2000000);
jack_deactivate(client);
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
int got_bursts = bursts;
printf(" detected bursts: %d\n", got_bursts);
if (got_bursts < 3) {
fprintf(stderr, " FAIL: expected >=3 bursts, got %d\n", got_bursts);
return 1;
}
printf(" PASS (bind and toggle)\n");
return 0;
}
/* test unbind */
static int test_bind_unbind(void) {
printf("Test: bind to channel 5, unbind, then toggle default (channel 0)\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_unbind", JackNoStartServer, &status);
if (!client) {
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " SKIP: no JACK\n");
return 1;
}
jack_port_t *audio_out = jack_port_register(client, "out",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
jack_port_t *audio_in = jack_port_register(client, "in",
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, 0);
if (!audio_out || !audio_in) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000);
char my_out[64], my_in[64];
snprintf(my_out, sizeof(my_out), "test_unbind:out");
snprintf(my_in, sizeof(my_in), "test_unbind:in");
if (jack_connect(client, my_out, "looper:input") ||
jack_connect(client, "looper:output", my_in)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
/* Bind to channel 5 */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send control key failed\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 5, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: bind to 5 failed\n");
return 1;
}
safe_usleep(200000);
/* Unbind (reset to 0) */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: control key for unbind\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 63, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send unbind note 63 failed\n");
return 1;
}
safe_usleep(200000);
/* Now toggle with control+62 should affect channel 0 */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: control key for toggle\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 62, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: toggle note 62\n");
return 1;
}
/* Wait for beep and loop */
int sr = jack_get_sample_rate(client);
continuous_sine = 0;
beep_remaining = (int)(0.1f * sr);
bursts = 0;
prev_above = 0;
passthrough_output_port = audio_out;
passthrough_input_port = audio_in;
passthrough_phase = 0.0f;
passthrough_freq = 440.0f;
passthrough_sample_rate = sr;
passthrough_total_samples = 0;
passthrough_sum_sq = 0.0;
passthrough_done = 0;
jack_set_process_callback(client, passthrough_process, NULL);
if (jack_activate(client)) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
return 1;
}
safe_usleep(200000); /* allow beep */
/* second control+62 -> loop */
if (send_jack_note_on("looper:control", 64, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: control key for loop\n");
return 1;
}
safe_usleep(200000);
if (send_jack_note_on("looper:control", 62, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: toggle for loop\n");
return 1;
}
safe_usleep(2000000);
jack_deactivate(client);
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
int got_bursts = bursts;
printf(" detected bursts: %d\n", got_bursts);
if (got_bursts < 3) {
fprintf(stderr, " FAIL: expected >=3 bursts, got %d\n", got_bursts);
return 1;
}
printf(" PASS (unbind works, toggle channel 0)\n");
return 0;
}
/* test remove channel */
static int test_remove_channel(void) {
printf("Test: dynamic channel removal via MIDI command\n");
pid_t pid = start_looper();
if (pid < 0) return 1;
jack_client_t *client;
jack_status_t status;
client = jack_client_open("test_remove", JackNoStartServer, &status);
if (!client) {
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " SKIP: no JACK\n");
return 1;
}
/* add channel */
if (send_jack_note_on("looper:control", 60, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send note 60 failed\n");
return 1;
}
safe_usleep(1500000);
/* verify channel1_input exists */
const char **ports = jack_get_ports(client, NULL, JACK_DEFAULT_AUDIO_TYPE, 0);
int found = 0;
if (ports) {
for (int i = 0; ports[i]; i++) {
if (strstr(ports[i], "looper:channel1_input")) {
found = 1;
break;
}
}
jack_free(ports);
}
if (!found) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: channel1_input not created\n");
return 1;
}
printf(" channel1_input created\n");
/* remove channel */
if (send_jack_note_on("looper:control", 61, 127) != 0) {
jack_client_close(client);
kill(pid, SIGTERM); waitpid(pid, NULL, 0);
fprintf(stderr, " FAIL: send note 61 failed\n");
return 1;
}
safe_usleep(1500000);
/* verify channel1_input has disappeared */
ports = jack_get_ports(client, NULL, JACK_DEFAULT_AUDIO_TYPE, 0);
int still_found = 0;
if (ports) {
for (int i = 0; ports[i]; i++) {
if (strstr(ports[i], "looper:channel1_input")) {
still_found = 1;
break;
}
}
jack_free(ports);
}
jack_client_close(client);
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
if (still_found) {
fprintf(stderr, " FAIL: channel1_input not removed after remove command\n");
return 1;
}
printf(" PASS (channel removed)\n");
return 0;
}
int main(void) {
/* 1. binary must exist */
if (system("test -x ./looper") != 0) {
fprintf(stderr, "FATAL: looper binary not found\n");
return 1;
}
/* 2. MIDI transition tests (skipped no external tools) */
/* 3. Audio passthrough test must work for basic connectivity */
test_audio_pass_through();
int failures = 0;
/* 4. Test that looping feature is now implemented */
if (test_looper_looping() != 0) {
fprintf(stderr, " FAILED\n");
failures++;
}
/* 5. Test multiple dynamic channels */
if (test_multiple_channels() != 0) {
fprintf(stderr, " FAILED\n");
failures++;
}
/* 6. Test controlkey modifier */
if (test_control_key_modifier() != 0) {
fprintf(stderr, " FAILED\n");
failures++;
}
/* 7. Test bind channel */
if (test_bind_channel() != 0) {
fprintf(stderr, " FAILED\n");
failures++;
}
/* 8. Test unbind */
if (test_bind_unbind() != 0) {
fprintf(stderr, " FAILED\n");
failures++;
}
/* 9. Test channel removal */
if (test_remove_channel() != 0) {
fprintf(stderr, " FAILED\n");
failures++;
}
if (failures > 0) {
fprintf(stderr, "%d test(s) FAILED\n", failures);
return 1;
}
printf("All tests completed successfully.\n");
return 0;
}