420 lines
13 KiB
C
420 lines
13 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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#include <math.h>
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#include <stdbool.h>
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#include <jack/jack.h>
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#include <jack/midiport.h>
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#include <pthread.h>
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#include <sys/wait.h>
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#include <stdatomic.h>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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// Test configuration
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#define TEST_SAMPLE_RATE 48000
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#define TEST_NFRAMES 1024
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#define TEST_DURATION_SECONDS 2
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#define MAX_CHANNELS 8
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#define MAX_SCENES 8
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#define MAX_CLIPS 512
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// Global test state
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static pid_t looper_pid = -1;
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static jack_client_t *test_client = NULL;
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static jack_port_t *test_audio_out[MAX_CHANNELS];
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static jack_port_t *test_audio_in[MAX_CHANNELS];
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static jack_port_t *test_midi_out;
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static jack_port_t *test_midi_in;
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static atomic_bool test_running;
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static atomic_int tests_passed;
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static atomic_int tests_failed;
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// Test audio buffers
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static float test_output_buffer[MAX_CHANNELS][TEST_NFRAMES * TEST_DURATION_SECONDS];
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static atomic_size_t test_output_count[MAX_CHANNELS];
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// ============================================================
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// Test framework
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// ============================================================
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#define TEST(name, expr) do { \
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if (expr) { \
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atomic_fetch_add(&tests_passed, 1); \
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printf(" PASS: %s\n", name); \
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} else { \
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atomic_fetch_add(&tests_failed, 1); \
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printf(" FAIL: %s\n", name); \
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} \
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} while(0)
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// ============================================================
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// JACK test client callbacks
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// ============================================================
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static int test_process_callback(jack_nframes_t nframes, void *arg) {
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(void)arg;
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if (!atomic_load(&test_running)) return 0;
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// Read audio from looper outputs
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for (int ch = 0; ch < MAX_CHANNELS; ch++) {
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jack_default_audio_sample_t *in = (jack_default_audio_sample_t *)
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jack_port_get_buffer(test_audio_in[ch], nframes);
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size_t count = atomic_load(&test_output_count[ch]);
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if (count + nframes <= TEST_NFRAMES * TEST_DURATION_SECONDS) {
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for (jack_nframes_t i = 0; i < nframes; i++) {
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test_output_buffer[ch][count + i] = in[i];
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}
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atomic_store(&test_output_count[ch], count + nframes);
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}
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}
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// Read MIDI from looper
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void *midi_buf = jack_port_get_buffer(test_midi_in, nframes);
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jack_midi_event_t event;
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int event_count = jack_midi_get_event_count(midi_buf);
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for (int i = 0; i < event_count; i++) {
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jack_midi_event_get(&event, midi_buf, i);
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// Process MIDI events if needed
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}
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return 0;
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}
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// ============================================================
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// Helper functions
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// ============================================================
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static int start_looper(const char *client_name) {
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looper_pid = fork();
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if (looper_pid == 0) {
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// Child process - start jack-looper
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execl("./jack-looper", "jack-looper", "-n", client_name, "-i", NULL);
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perror("execl failed");
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exit(1);
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}
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if (looper_pid < 0) {
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perror("fork failed");
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return -1;
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}
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// Wait for looper to start
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usleep(500000); // 500ms
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return 0;
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}
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static int stop_looper(void) {
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if (looper_pid > 0) {
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kill(looper_pid, SIGTERM);
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int status;
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waitpid(looper_pid, &status, 0);
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looper_pid = -1;
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}
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return 0;
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}
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static int connect_test_client(const char *looper_name) {
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jack_status_t status;
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test_client = jack_client_open("test_routing", JackNullOption, &status, NULL);
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if (!test_client) return -1;
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char port_name[64];
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for (int ch = 0; ch < MAX_CHANNELS; ch++) {
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snprintf(port_name, sizeof(port_name), "test_out_%d", ch);
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test_audio_out[ch] = jack_port_register(test_client, port_name,
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JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsOutput, 0);
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snprintf(port_name, sizeof(port_name), "test_in_%d", ch);
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test_audio_in[ch] = jack_port_register(test_client, port_name,
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JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsInput, 0);
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if (!test_audio_out[ch] || !test_audio_in[ch]) return -1;
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}
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test_midi_out = jack_port_register(test_client, "test_midi_out",
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JACK_DEFAULT_MIDI_TYPE,
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JackPortIsOutput, 0);
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test_midi_in = jack_port_register(test_client, "test_midi_in",
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JACK_DEFAULT_MIDI_TYPE,
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JackPortIsInput, 0);
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if (!test_midi_out || !test_midi_in) return -1;
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jack_set_process_callback(test_client, test_process_callback, NULL);
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if (jack_activate(test_client) != 0) return -1;
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// Connect test outputs to looper inputs
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for (int ch = 0; ch < MAX_CHANNELS; ch++) {
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char looper_port[64];
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snprintf(looper_port, sizeof(looper_port), "%s:audio_in_%d", looper_name, ch);
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snprintf(port_name, sizeof(port_name), "test_routing:test_out_%d", ch);
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jack_connect(test_client, port_name, looper_port);
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// Connect looper outputs to test inputs
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snprintf(looper_port, sizeof(looper_port), "%s:audio_out_%d", looper_name, ch);
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snprintf(port_name, sizeof(port_name), "test_routing:test_in_%d", ch);
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jack_connect(test_client, looper_port, port_name);
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}
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// Connect MIDI
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char looper_port[64];
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snprintf(looper_port, sizeof(looper_port), "%s:midi_control_in", looper_name);
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jack_connect(test_client, "test_routing:test_midi_out", looper_port);
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snprintf(looper_port, sizeof(looper_port), "%s:midi_out", looper_name);
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jack_connect(test_client, looper_port, "test_routing:test_midi_in");
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return 0;
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}
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static void disconnect_test_client(void) {
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if (test_client) {
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jack_client_close(test_client);
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test_client = NULL;
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}
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}
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static void send_sine_wave(int channel, float frequency, float amplitude, jack_nframes_t duration) {
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if (!test_client) return;
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jack_nframes_t sample_rate = jack_get_sample_rate(test_client);
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jack_nframes_t total_samples = (sample_rate * duration) / 1000;
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jack_nframes_t processed = 0;
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while (processed < total_samples && atomic_load(&test_running)) {
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jack_nframes_t nframes = (total_samples - processed < TEST_NFRAMES)
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? (total_samples - processed) : TEST_NFRAMES;
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jack_default_audio_sample_t *buf = (jack_default_audio_sample_t *)
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jack_port_get_buffer(test_audio_out[channel], nframes);
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for (jack_nframes_t i = 0; i < nframes; i++) {
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buf[i] = amplitude * sinf(2.0 * M_PI * frequency * (processed + i) / sample_rate);
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}
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processed += nframes;
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usleep(10000); // 10ms delay to let JACK process
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}
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}
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static void send_midi_note(int note, int velocity) {
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if (!test_client) return;
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jack_nframes_t nframes = TEST_NFRAMES;
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void *buf = jack_port_get_buffer(test_midi_out, nframes);
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jack_midi_clear_buffer(buf);
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uint8_t msg[3] = {0x90, note & 0x7F, velocity & 0x7F};
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jack_midi_event_write(buf, 0, msg, 3);
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usleep(100000); // 100ms to let JACK process
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}
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static float get_channel_rms(int channel) {
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size_t count = atomic_load(&test_output_count[channel]);
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if (count == 0) return 0.0f;
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double sum_sq = 0.0;
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for (size_t i = 0; i < count; i++) {
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sum_sq += test_output_buffer[channel][i] * test_output_buffer[channel][i];
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}
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return sqrtf(sum_sq / count);
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}
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static void clear_output_buffers(void) {
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for (int ch = 0; ch < MAX_CHANNELS; ch++) {
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atomic_store(&test_output_count[ch], 0);
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memset(test_output_buffer[ch], 0, sizeof(test_output_buffer[ch]));
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}
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}
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// ============================================================
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// Test cases
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// ============================================================
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static void test_basic_audio_routing(void) {
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printf("\nTest: Basic Audio Routing\n");
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clear_output_buffers();
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// Send sine wave to channel 0
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send_sine_wave(0, 440.0, 0.5, 500);
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usleep(200000); // Wait for processing
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// Check that audio appears on channel 0 output
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float rms_0 = get_channel_rms(0);
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float rms_1 = get_channel_rms(1);
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TEST("Channel 0 has audio output", rms_0 > 0.01f);
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TEST("Channel 1 has no audio (no input)", rms_1 < 0.01f);
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}
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static void test_multi_channel_routing(void) {
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printf("\nTest: Multi-Channel Audio Routing\n");
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clear_output_buffers();
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// Send different frequencies to different channels
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send_sine_wave(0, 440.0, 0.5, 300);
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send_sine_wave(1, 880.0, 0.5, 300);
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send_sine_wave(2, 1760.0, 0.5, 300);
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usleep(200000);
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float rms[3];
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for (int ch = 0; ch < 3; ch++) {
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rms[ch] = get_channel_rms(ch);
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}
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TEST("Channel 0 has audio", rms[0] > 0.01f);
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TEST("Channel 1 has audio", rms[1] > 0.01f);
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TEST("Channel 2 has audio", rms[2] > 0.01f);
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TEST("Channel 3 has no audio (no input)", get_channel_rms(3) < 0.01f);
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}
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static void test_midi_clip_trigger(void) {
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printf("\nTest: MIDI Clip Trigger\n");
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clear_output_buffers();
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// Send MIDI note to trigger clip recording
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send_midi_note(60, 100); // Middle C, velocity 100
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usleep(100000);
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// Send audio to channel 0 while clip is recording
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send_sine_wave(0, 440.0, 0.5, 500);
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usleep(200000);
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// Send another MIDI note to stop recording (toggle)
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send_midi_note(60, 100);
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usleep(100000);
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// Now the clip should be looping - send no audio input
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clear_output_buffers();
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usleep(200000);
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// Check that audio is still coming out (from the looped clip)
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float rms = get_channel_rms(0);
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TEST("Looped clip produces audio", rms > 0.01f);
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}
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static void test_midi_scene_launch(void) {
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printf("\nTest: MIDI Scene Launch\n");
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clear_output_buffers();
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// Record clips on multiple channels for scene 0
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for (int ch = 0; ch < 4; ch++) {
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send_midi_note(60 + ch, 100); // Start recording
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usleep(50000);
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send_sine_wave(ch, 440.0 * (ch + 1), 0.3, 200);
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usleep(50000);
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send_midi_note(60 + ch, 100); // Stop recording
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usleep(50000);
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}
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clear_output_buffers();
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usleep(200000);
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// All 4 channels should have audio from their looped clips
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for (int ch = 0; ch < 4; ch++) {
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float rms = get_channel_rms(ch);
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char test_name[64];
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snprintf(test_name, sizeof(test_name), "Channel %d has looped audio", ch);
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TEST(test_name, rms > 0.01f);
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}
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}
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static void test_channel_independence(void) {
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printf("\nTest: Channel Independence\n");
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clear_output_buffers();
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// Send audio only to channel 0
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send_sine_wave(0, 440.0, 0.8, 500);
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usleep(200000);
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float rms_0 = get_channel_rms(0);
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float rms_1 = get_channel_rms(1);
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float rms_2 = get_channel_rms(2);
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TEST("Channel 0 has strong signal", rms_0 > 0.1f);
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TEST("Channel 1 has no crosstalk", rms_1 < 0.01f);
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TEST("Channel 2 has no crosstalk", rms_2 < 0.01f);
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}
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static void test_volume_control(void) {
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printf("\nTest: Volume Control\n");
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// Note: Volume control would need to be set via CLI commands
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// For now, test that audio passes through at default volume
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clear_output_buffers();
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send_sine_wave(0, 440.0, 0.5, 500);
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usleep(200000);
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float rms = get_channel_rms(0);
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TEST("Audio passes through at default volume", rms > 0.01f);
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}
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// ============================================================
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// Main test runner
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// ============================================================
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int main(void) {
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printf("=== Audio and MIDI Routing Integration Tests ===\n");
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printf("Note: These tests require JACK to be running\n\n");
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atomic_store(&tests_passed, 0);
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atomic_store(&tests_failed, 0);
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atomic_store(&test_running, true);
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// Start jack-looper
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printf("Starting jack-looper...\n");
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if (start_looper("test_looper") != 0) {
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fprintf(stderr, "Failed to start jack-looper\n");
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return 1;
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}
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printf("jack-looper started (PID: %d)\n", looper_pid);
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// Connect test client
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printf("Connecting test client...\n");
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if (connect_test_client("test_looper") != 0) {
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fprintf(stderr, "Failed to connect test client\n");
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stop_looper();
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return 1;
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}
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printf("Test client connected\n\n");
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// Run tests
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test_basic_audio_routing();
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test_multi_channel_routing();
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test_midi_clip_trigger();
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test_midi_scene_launch();
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test_channel_independence();
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test_volume_control();
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// Cleanup
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atomic_store(&test_running, false);
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disconnect_test_client();
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stop_looper();
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// Report results
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int passed = atomic_load(&tests_passed);
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int failed = atomic_load(&tests_failed);
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printf("\n=== Results ===\n");
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printf("Passed: %d\n", passed);
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printf("Failed: %d\n", failed);
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return failed > 0 ? 1 : 0;
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}
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