diff --git a/tascam_test_program.c b/tascam_test_program.c deleted file mode 100644 index 64b2722..0000000 --- a/tascam_test_program.c +++ /dev/null @@ -1,582 +0,0 @@ -// MIT License -// Copyright (c) 2025 serifpersia - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -// --- Latency Tuning --- -#define ISO_PLAYBACK_PACKETS_PER_TRANSFER 40 -#define NUM_PLAYBACK_TRANSFERS 8 -#define NUM_FEEDBACK_TRANSFERS 8 -#define NUM_CAPTURE_TRANSFERS 4 -#define CAPTURE_PACKET_SIZE 131072 - -// --- Device and Endpoint Configuration --- -#define TASCAM_VID 0x0644 -#define TASCAM_PID 0x8020 -#define EP_AUDIO_OUT 0x02 -#define EP_PLAYBACK_FEEDBACK 0x81 -#define EP_CAPTURE_DATA 0x86 - -// --- USB Request Types --- -#define RT_H2D_CLASS_EP 0x22 -#define RT_D2H_VENDOR_DEV 0xc0 -#define RT_H2D_VENDOR_DEV 0x40 - -// --- UAC / Vendor Requests --- -#define UAC_SET_CUR 0x01 -#define UAC_SAMPLING_FREQ_CONTROL 0x0100 -#define VENDOR_REQ_REGISTER_WRITE 65 -#define VENDOR_REQ_MODE_CONTROL 73 - -// --- Streaming Configuration --- -#define BYTES_PER_SAMPLE 3 -#define DEVICE_CHANNELS 4 -#define SINE_CHANNELS 2 -#define DEVICE_FRAME_SIZE (DEVICE_CHANNELS * BYTES_PER_SAMPLE) -#define SINE_FRAME_SIZE (SINE_CHANNELS * BYTES_PER_SAMPLE) -#define FEEDBACK_PACKET_SIZE 3 -#define MAX_FEEDBACK_PACKETS_PER_URB 5 -#define USB_TIMEOUT 1000 - -// --- Sine Wave Configuration --- -#define SINE_FREQUENCY 440.0 -#define SINE_AMPLITUDE 8388600.0 - -// --- Feedback Synchronization Engine --- -#define FEEDBACK_ACCUMULATOR_SIZE 128 -#define WARMUP_THRESHOLD (ISO_PLAYBACK_PACKETS_PER_TRANSFER * 2) - -// --- Data Structures for Rate/Profile Configuration --- -struct latency_profile_config { - const char *name; - int feedback_packets_per_urb; - int asio_buffer_size_frames; - double expected_feedback_ms; -}; - -struct sample_rate_config { - int rate; - const unsigned char rate_data[3]; - uint16_t rate_vendor_wValue; - unsigned int feedback_base_value; - unsigned int feedback_max_value; - const struct latency_profile_config profiles[5]; -}; - -// --- Global Configuration Table --- -static const struct sample_rate_config g_rate_configs[] = { - { 44100, {0x44, 0xac, 0x00}, 0x1000, 42, 46, { {"Lowest",1,49,2.0}, {"Low",1,64,2.0}, {"Normal",2,128,2.0}, {"High",5,256,5.0}, {"Highest",5,512,5.0} } }, - { 48000, {0x80, 0xbb, 0x00}, 0x1002, 46, 50, { {"Lowest",1,48,1.0}, {"Low",1,64,2.0}, {"Normal",2,128,2.0}, {"High",5,256,5.0}, {"Highest",5,512,5.0} } }, - { 88200, {0x88, 0x58, 0x01}, 0x1008, 86, 90, { {"Lowest",1,98,1.0}, {"Low",1,128,2.0}, {"Normal",2,256,2.0}, {"High",5,512,5.0}, {"Highest",5,1024,5.0} } }, - { 96000, {0x00, 0x77, 0x01}, 0x100a, 94, 98, { {"Lowest",1,96,1.0}, {"Low",1,128,2.0}, {"Normal",2,256,2.0}, {"High",5,512,5.0}, {"Highest",5,1024,5.0} } } -}; -#define NUM_SUPPORTED_RATES (sizeof(g_rate_configs) / sizeof(g_rate_configs[0])) -#define NUM_PROFILES 5 - -// --- Global State --- -static volatile bool is_running = true; - -struct stream_state { - pthread_mutex_t lock; - const struct sample_rate_config *rate_cfg; - const struct latency_profile_config *profile_cfg; - double sine_phase; - bool playing_sine; - unsigned int feedback_accumulator_pattern[FEEDBACK_ACCUMULATOR_SIZE]; - unsigned int feedback_pattern_out_idx; - unsigned int feedback_pattern_in_idx; - bool feedback_synced; - bool feedback_warmed_up; - int last_feedback_value; - struct timeval last_feedback_completion_time; - double last_feedback_interval_ms; - double min_feedback_interval_ms; - double max_feedback_interval_ms; - double avg_feedback_interval_sum; - unsigned long feedback_interval_count; - unsigned long underrun_count; - unsigned long overrun_count; -}; - -struct logging_thread_args { - struct stream_state *state; - bool minimal_log; - int log_interval_ms; -}; - -// --- Function Prototypes --- -void print_usage(const char *prog_name); -void print_latency_report(void); -int perform_initialization_sequence(libusb_device_handle *handle, const struct sample_rate_config *rate_config); -static void LIBUSB_CALL iso_playback_callback(struct libusb_transfer *transfer); -static void LIBUSB_CALL feedback_callback(struct libusb_transfer *transfer); -static void LIBUSB_CALL capture_callback(struct libusb_transfer *transfer); -void *logging_thread_func(void *arg); -double timeval_diff_ms(struct timeval *start, struct timeval *end); -static void generate_feedback_pattern(unsigned int base_frames, int frame_adjustment, unsigned int* output_pattern); - - -void sigint_handler(int signum) { - if (is_running) { - printf("\n\n\n\n\nCtrl+C detected, stopping...\n"); - is_running = false; - } -} - -void print_latency_report(void) { - const double ESTIMATED_OS_DRIVER_LATENCY_MS = 2.0; - const double ESTIMATED_DEVICE_HW_LATENCY_MS = 4.0; - double packet_duration_ms = 0.125; - double transfer_latency_ms = ISO_PLAYBACK_PACKETS_PER_TRANSFER * packet_duration_ms; - double buffer_latency_ms = NUM_PLAYBACK_TRANSFERS * transfer_latency_ms; - double total_estimated_latency = buffer_latency_ms + ESTIMATED_OS_DRIVER_LATENCY_MS + ESTIMATED_DEVICE_HW_LATENCY_MS; - - printf("\n--- Audio Latency Report ---\n"); - printf("Configurable Latency (Software Buffer):\n"); - printf(" USB Transfer Size ......: %.3f ms (%d packets)\n", transfer_latency_ms, ISO_PLAYBACK_PACKETS_PER_TRANSFER); - printf(" Software Buffer Size ...: %.3f ms (%d transfers)\n", buffer_latency_ms, NUM_PLAYBACK_TRANSFERS); - printf("--------------------------------------------------\n"); - printf("Fixed Latency (Estimates):\n"); - printf(" OS & Driver Overhead ...: %.1f ms\n", ESTIMATED_OS_DRIVER_LATENCY_MS); - printf(" Device Hardware ........: %.1f ms (Internal Buffer + D/A)\n", ESTIMATED_DEVICE_HW_LATENCY_MS); - printf("--------------------------------------------------\n"); - printf(" >> Total Estimated Output Latency: %.2f ms <<\n\n", total_estimated_latency); -} - - -int main(int argc, char *argv[]) { - int sample_rate = 0; - int profile_index = -1; - bool minimal_log = false; - int log_interval_ms = 100; - - for (int i = 1; i < argc; i++) { - if (strcmp(argv[i], "-r") == 0 && i + 1 < argc) sample_rate = atoi(argv[++i]); - else if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) profile_index = atoi(argv[++i]); - else if (strcmp(argv[i], "--minimal-log") == 0) minimal_log = true; - else if (strcmp(argv[i], "--log-interval") == 0 && i + 1 < argc) log_interval_ms = atoi(argv[++i]); - } - - if (sample_rate == 0 || profile_index < 0) { - print_usage(argv[0]); - return 1; - } - - const struct sample_rate_config *rate_config = NULL; - for (unsigned int i = 0; i < NUM_SUPPORTED_RATES; i++) { - if (g_rate_configs[i].rate == sample_rate) { - rate_config = &g_rate_configs[i]; - break; - } - } - - if (!rate_config) { - fprintf(stderr, "Error: Sample rate %d is not supported.\n", sample_rate); - return 1; - } - if (profile_index >= NUM_PROFILES) { - fprintf(stderr, "Error: Invalid profile index %d.\n", profile_index); - return 1; - } - const struct latency_profile_config *profile_config = &rate_config->profiles[profile_index]; - - libusb_device_handle *handle = NULL; - struct libusb_transfer *playback_transfers[NUM_PLAYBACK_TRANSFERS] = {0}; - struct libusb_transfer *feedback_transfers[NUM_FEEDBACK_TRANSFERS] = {0}; - struct libusb_transfer *capture_transfers[NUM_CAPTURE_TRANSFERS] = {0}; - struct stream_state state = { .sine_phase = 0.0, .playing_sine = false }; - struct logging_thread_args log_args = { &state, minimal_log, log_interval_ms }; - pthread_t logging_thread = 0; - bool kernel_driver_was_active[2] = {false, false}; - int r = 0; - - const int max_frames_per_packet = (rate_config->rate / 8000) + 2; - const int playback_packet_max_size = max_frames_per_packet * DEVICE_FRAME_SIZE; - const int playback_transfer_size = playback_packet_max_size * ISO_PLAYBACK_PACKETS_PER_TRANSFER; - const int feedback_transfer_size = FEEDBACK_PACKET_SIZE * MAX_FEEDBACK_PACKETS_PER_URB; - const int capture_transfer_size = CAPTURE_PACKET_SIZE; - - printf("--- TASCAM US-144MKII Sine Wave Generator ---\n"); - printf("Profile: %d, Rate: %d Hz, Latency: %s (%d-sample buffer)\n", - profile_index, rate_config->rate, profile_config->name, profile_config->asio_buffer_size_frames); - printf("Config: Feedback URB contains %d packet(s), expected interval %.1f ms.\n", - profile_config->feedback_packets_per_urb, profile_config->expected_feedback_ms); - printf("Signal: Generating %.1f Hz sine wave.\n", SINE_FREQUENCY); - print_latency_report(); - - pthread_mutex_init(&state.lock, NULL); - state.rate_cfg = rate_config; - state.profile_cfg = profile_config; - state.min_feedback_interval_ms = DBL_MAX; - - signal(SIGINT, sigint_handler); - if (libusb_init(NULL) < 0) { r = 1; goto cleanup; } - - handle = libusb_open_device_with_vid_pid(NULL, TASCAM_VID, TASCAM_PID); - if (!handle) { fprintf(stderr, "Device not found\n"); r = 1; goto cleanup; } - - for (int i = 0; i < 2; i++) { - if (libusb_kernel_driver_active(handle, i)) { - kernel_driver_was_active[i] = true; - if ((r = libusb_detach_kernel_driver(handle, i)) != 0) { - fprintf(stderr, "Could not detach kernel driver for interface %d: %s\n", i, libusb_error_name(r)); - r = 1; goto cleanup; - } - } - } - - if (perform_initialization_sequence(handle, rate_config) != 0) { - fprintf(stderr, "Device configuration failed.\n"); r = 1; goto cleanup; - } - - printf("Starting playback stream... (waiting for buffer warm-up)\n"); - for (int i = 0; i < NUM_PLAYBACK_TRANSFERS; i++) { - playback_transfers[i] = libusb_alloc_transfer(ISO_PLAYBACK_PACKETS_PER_TRANSFER); - if (!playback_transfers[i]) { fprintf(stderr, "Failed to allocate playback transfer %d\n", i); r = 1; goto cleanup; } - unsigned char *buf = malloc(playback_transfer_size); - if (!buf) { fprintf(stderr, "Failed to allocate playback buffer %d\n", i); r = 1; goto cleanup; } - - int nominal_packet_size = (rate_config->rate / 8000) * DEVICE_FRAME_SIZE; - int nominal_transfer_size = nominal_packet_size * ISO_PLAYBACK_PACKETS_PER_TRANSFER; - memset(buf, 0, playback_transfer_size); - libusb_fill_iso_transfer(playback_transfers[i], handle, EP_AUDIO_OUT, buf, nominal_transfer_size, ISO_PLAYBACK_PACKETS_PER_TRANSFER, iso_playback_callback, &state, USB_TIMEOUT); - libusb_set_iso_packet_lengths(playback_transfers[i], nominal_packet_size); - - int submit_res = libusb_submit_transfer(playback_transfers[i]); - if (submit_res < 0) { fprintf(stderr, "Failed to submit playback transfer %d: %s\n", i, libusb_error_name(submit_res)); r = 1; goto cleanup; } - } - - printf("Starting feedback stream...\n"); - for (int i = 0; i < NUM_FEEDBACK_TRANSFERS; i++) { - feedback_transfers[i] = libusb_alloc_transfer(profile_config->feedback_packets_per_urb); - if (!feedback_transfers[i]) { fprintf(stderr, "Failed to allocate feedback transfer %d\n", i); r = 1; goto cleanup; } - unsigned char *buf = malloc(feedback_transfer_size); - if (!buf) { fprintf(stderr, "Failed to allocate feedback buffer %d\n", i); r = 1; goto cleanup; } - libusb_fill_iso_transfer(feedback_transfers[i], handle, EP_PLAYBACK_FEEDBACK, buf, feedback_transfer_size, profile_config->feedback_packets_per_urb, feedback_callback, &state, USB_TIMEOUT); - libusb_set_iso_packet_lengths(feedback_transfers[i], FEEDBACK_PACKET_SIZE); - int submit_res = libusb_submit_transfer(feedback_transfers[i]); - if (submit_res < 0) { fprintf(stderr, "Failed to submit feedback transfer %d: %s\n", i, libusb_error_name(submit_res)); r = 1; goto cleanup; } - } - - printf("Starting capture stream... (bulk transfers on EP 0x%02X)\n", EP_CAPTURE_DATA); - for (int i = 0; i < NUM_CAPTURE_TRANSFERS; i++) { - capture_transfers[i] = libusb_alloc_transfer(0); - if (!capture_transfers[i]) { fprintf(stderr, "Failed to allocate capture transfer %d\n", i); r = 1; goto cleanup; } - unsigned char *buf = malloc(capture_transfer_size); - if (!buf) { fprintf(stderr, "Failed to allocate capture buffer for transfer %d\n", i); r = 1; goto cleanup; } - libusb_fill_bulk_transfer(capture_transfers[i], handle, EP_CAPTURE_DATA, buf, capture_transfer_size, capture_callback, &state, USB_TIMEOUT); - int submit_res = libusb_submit_transfer(capture_transfers[i]); - if (submit_res < 0) { fprintf(stderr, "Failed to submit capture transfer %d: %s\n", i, libusb_error_name(submit_res)); r = 1; goto cleanup; } - } - printf("Initial capture transfers submitted.\n"); - - if (pthread_create(&logging_thread, NULL, logging_thread_func, &log_args) != 0) { - fprintf(stderr, "Failed to create logging thread.\n"); - is_running = false; - } - - int flags = fcntl(STDIN_FILENO, F_GETFL, 0); - if (flags != -1) fcntl(STDIN_FILENO, F_SETFL, flags | O_NONBLOCK); - - printf("\n--- Playback active. Press 'p' to toggle sine wave, Ctrl+C to stop. ---\n"); - if (!minimal_log) printf("\n\n\n\n\n"); - - while (is_running) { - libusb_handle_events_timeout_completed(NULL, &(struct timeval){0, 50000}, NULL); - char c = 0; - if (read(STDIN_FILENO, &c, 1) > 0 && c == 'p') { - pthread_mutex_lock(&state.lock); - state.playing_sine = !state.playing_sine; - if (!minimal_log) printf("\033[6A\033[K\r>>> Playback mode changed to: %s <<<\n", state.playing_sine ? "SINE WAVE" : "SILENCE"); - else printf("\nPlayback mode: %s\n", state.playing_sine ? "SINE WAVE" : "SILENCE"); - fflush(stdout); - pthread_mutex_unlock(&state.lock); - } - } - - cleanup: - is_running = false; - if (logging_thread) pthread_join(logging_thread, NULL); - - for (int i = 0; i < NUM_PLAYBACK_TRANSFERS; i++) if (playback_transfers[i]) libusb_cancel_transfer(playback_transfers[i]); - for (int i = 0; i < NUM_FEEDBACK_TRANSFERS; i++) if (feedback_transfers[i]) libusb_cancel_transfer(feedback_transfers[i]); - for (int i = 0; i < NUM_CAPTURE_TRANSFERS; i++) if (capture_transfers[i]) libusb_cancel_transfer(capture_transfers[i]); - - struct timeval tv = {0, 100000}; - libusb_handle_events_timeout_completed(NULL, &tv, NULL); - - if (handle) { - libusb_release_interface(handle, 1); - libusb_release_interface(handle, 0); - for(int i = 0; i < 2; i++) if (kernel_driver_was_active[i]) libusb_attach_kernel_driver(handle, i); - libusb_close(handle); - } - - for (int i = 0; i < NUM_PLAYBACK_TRANSFERS; i++) if (playback_transfers[i]) { if (playback_transfers[i]->buffer) free(playback_transfers[i]->buffer); libusb_free_transfer(playback_transfers[i]); } - for (int i = 0; i < NUM_FEEDBACK_TRANSFERS; i++) if (feedback_transfers[i]) { if (feedback_transfers[i]->buffer) free(feedback_transfers[i]->buffer); libusb_free_transfer(feedback_transfers[i]); } - for (int i = 0; i < NUM_CAPTURE_TRANSFERS; i++) if (capture_transfers[i]) { if (capture_transfers[i]->buffer) free(capture_transfers[i]->buffer); libusb_free_transfer(capture_transfers[i]); } - - pthread_mutex_destroy(&state.lock); - if (r != 1) libusb_exit(NULL); - printf("Cleanup complete.\n"); - return r; -} - -static void LIBUSB_CALL capture_callback(struct libusb_transfer *transfer) { - if (!is_running) return; - if (transfer->status != LIBUSB_TRANSFER_COMPLETED && transfer->status != LIBUSB_TRANSFER_CANCELLED) { - fprintf(stderr, "\nCapture transfer error: %s\n", libusb_error_name(transfer->status)); - if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) is_running = false; - } - if (is_running && libusb_submit_transfer(transfer) < 0) { - fprintf(stderr, "\nFailed to re-submit capture transfer\n"); - is_running = false; - } -} - -void print_usage(const char *prog_name) { - fprintf(stderr, "Usage: %s -r -p [options]\n", prog_name); - fprintf(stderr, "Required:\n"); - fprintf(stderr, " -r : 44100, 48000, 88200, 96000\n"); - fprintf(stderr, " -p : 0-4 (Lowest, Low, Normal, High, Highest)\n"); - fprintf(stderr, "Optional:\n"); - fprintf(stderr, " --minimal-log : Switch to a simple, single-line status summary.\n"); - fprintf(stderr, " --log-interval : Set summary update frequency (default: 100ms).\n"); -} - -double timeval_diff_ms(struct timeval *start, struct timeval *end) { - return (end->tv_sec - start->tv_sec) * 1000.0 + (end->tv_usec - start->tv_usec) / 1000.0; -} - -void *logging_thread_func(void *arg) { - struct logging_thread_args *args = (struct logging_thread_args *)arg; - struct stream_state *state = args->state; - const int bar_width = 20; - - while (is_running) { - usleep(args->log_interval_ms * 1000); - pthread_mutex_lock(&state->lock); - - const char *health = (state->underrun_count > 0 || state->overrun_count > 0) ? "\033[1;31mUNSTABLE\033[0m" : "\033[1;32mSTABLE\033[0m"; - const char *sync_status_str = state->feedback_warmed_up ? "\033[1;32mACQUIRED\033[0m" : (state->feedback_synced ? "\033[1;33mWARM-UP\033[0m" : "\033[1;31mLOST/OFF\033[0m"); - double avg_interval = (state->feedback_interval_count > 0) ? state->avg_feedback_interval_sum / state->feedback_interval_count : 0.0; - - if (args->minimal_log) { - printf("Health: %s, Sync: %s, Avg Interval: %.2fms, Underruns: %lu, Overruns: %lu \r", - (state->underrun_count > 0 || state->overrun_count > 0) ? "UNSTABLE" : "STABLE", - state->feedback_warmed_up ? "ACQUIRED" : "WARMING", - avg_interval, state->underrun_count, state->overrun_count); - } else { - size_t fill = (state->feedback_pattern_in_idx - state->feedback_pattern_out_idx + FEEDBACK_ACCUMULATOR_SIZE) % FEEDBACK_ACCUMULATOR_SIZE; - int filled_chars = (int)((double)fill / FEEDBACK_ACCUMULATOR_SIZE * bar_width); - printf("\033[5A\033[K\n\033[K\n\033[K\n\033[K\n\033[K\n\033[5A"); - printf("--- TASCAM US-144MKII Stream Health ---\n"); - printf(" Health: %-18s Sync: %-18s Feedback: %-3d\n", health, sync_status_str, state->last_feedback_value); - printf(" Buffer: ["); - for(int i=0; i Now: %4.2f Min: %4.2f Avg: %4.2f Max: %4.2f\n", - state->last_feedback_interval_ms, - state->min_feedback_interval_ms == DBL_MAX ? 0.0 : state->min_feedback_interval_ms, - avg_interval, state->max_feedback_interval_ms); - printf(" Errors -> Underruns: %-5lu Overruns: %lu\n", state->underrun_count, state->overrun_count); - } - fflush(stdout); - pthread_mutex_unlock(&state->lock); - } - return NULL; -} - -static void generate_feedback_pattern(unsigned int base_frames, int frame_adjustment, unsigned int* output_pattern) { - int num_steps = 8; - int num_adj_packets = abs(frame_adjustment); - int adj = (frame_adjustment > 0) ? 1 : -1; - int accumulator = 0; - - for (int i = 0; i < num_steps; i++) { - accumulator += num_adj_packets; - if (accumulator >= num_steps) { - output_pattern[i] = base_frames + adj; - accumulator -= num_steps; - } else { - output_pattern[i] = base_frames; - } - } -} - -static void LIBUSB_CALL feedback_callback(struct libusb_transfer *transfer) { - if (!is_running) return; - struct stream_state *state = transfer->user_data; - struct timeval now; - gettimeofday(&now, NULL); - - if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { - if (transfer->status != LIBUSB_TRANSFER_CANCELLED) { - pthread_mutex_lock(&state->lock); - if (state->feedback_synced) printf("\nSync Lost (URB Error: %s)!\n", libusb_error_name(transfer->status)); - state->feedback_synced = false; - state->feedback_warmed_up = false; - pthread_mutex_unlock(&state->lock); - } - goto resubmit; - } - - pthread_mutex_lock(&state->lock); - if (state->last_feedback_completion_time.tv_sec > 0) { - state->last_feedback_interval_ms = timeval_diff_ms(&state->last_feedback_completion_time, &now); - if (state->feedback_warmed_up) { - if (state->last_feedback_interval_ms < state->min_feedback_interval_ms) state->min_feedback_interval_ms = state->last_feedback_interval_ms; - if (state->last_feedback_interval_ms > state->max_feedback_interval_ms) state->max_feedback_interval_ms = state->last_feedback_interval_ms; - state->avg_feedback_interval_sum += state->last_feedback_interval_ms; - state->feedback_interval_count++; - } - } - state->last_feedback_completion_time = now; - - bool was_synced = state->feedback_synced; - bool sync_lost_this_urb = false; - - for (int p = 0; p < transfer->num_iso_packets; p++) { - struct libusb_iso_packet_descriptor *pack = &transfer->iso_packet_desc[p]; - if (pack->status != 0 || pack->actual_length < 1) { - sync_lost_this_urb = true; - continue; - } - size_t packet_offset = p * FEEDBACK_PACKET_SIZE; - uint8_t feedback_value = transfer->buffer[packet_offset]; - state->last_feedback_value = feedback_value; - - if (feedback_value >= state->rate_cfg->feedback_base_value && feedback_value <= state->rate_cfg->feedback_max_value) { - unsigned int generated_pattern[8]; - unsigned int base_frames = state->rate_cfg->rate / 8000; - unsigned int target_total_frames = feedback_value; - int frame_adjustment = target_total_frames - (8 * base_frames); - - generate_feedback_pattern(base_frames, frame_adjustment, generated_pattern); - - size_t fill_level = (state->feedback_pattern_in_idx - state->feedback_pattern_out_idx + FEEDBACK_ACCUMULATOR_SIZE) % FEEDBACK_ACCUMULATOR_SIZE; - if (fill_level > (FEEDBACK_ACCUMULATOR_SIZE - 16)) state->overrun_count++; - - for (int i = 0; i < 8; i++) { - unsigned int in_idx = (state->feedback_pattern_in_idx + i) % FEEDBACK_ACCUMULATOR_SIZE; - state->feedback_accumulator_pattern[in_idx] = generated_pattern[i]; - } - state->feedback_pattern_in_idx = (state->feedback_pattern_in_idx + 8) % FEEDBACK_ACCUMULATOR_SIZE; - } else { - sync_lost_this_urb = true; - } - } - - if (sync_lost_this_urb) { - if (was_synced) printf("\nSync Lost (Bad Packet)!\n"); - state->feedback_synced = false; - state->feedback_warmed_up = false; - } else { - if (!was_synced) printf("\nSync Acquired!\n"); - state->feedback_synced = true; - size_t fill_level = (state->feedback_pattern_in_idx - state->feedback_pattern_out_idx + FEEDBACK_ACCUMULATOR_SIZE) % FEEDBACK_ACCUMULATOR_SIZE; - if (!state->feedback_warmed_up && fill_level >= WARMUP_THRESHOLD) { - state->feedback_warmed_up = true; - state->min_feedback_interval_ms = DBL_MAX; - state->max_feedback_interval_ms = 0.0; - state->avg_feedback_interval_sum = 0.0; - state->feedback_interval_count = 0; - printf("\nBuffer warmed up. Measuring steady-state performance.\n"); - } - } - pthread_mutex_unlock(&state->lock); - - resubmit: - if (is_running) libusb_submit_transfer(transfer); -} - -static void LIBUSB_CALL iso_playback_callback(struct libusb_transfer *transfer) { - if (!is_running) return; - struct stream_state *state = transfer->user_data; - - if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { - if (transfer->status != LIBUSB_TRANSFER_CANCELLED) { - fprintf(stderr, "\nPlayback callback error: %s\n", libusb_error_name(transfer->status)); - is_running = false; - } - return; - } - - pthread_mutex_lock(&state->lock); - int nominal_frames = state->rate_cfg->rate / 8000; - unsigned char *buf_ptr = transfer->buffer; - size_t total_bytes_in_urb = 0; - const double phase_increment = (2.0 * M_PI * SINE_FREQUENCY) / state->rate_cfg->rate; - - for (int i = 0; i < transfer->num_iso_packets; i++) { - unsigned int frames_for_packet; - if (!state->feedback_warmed_up || state->feedback_pattern_out_idx == state->feedback_pattern_in_idx) { - if (state->feedback_warmed_up) state->underrun_count++; - frames_for_packet = nominal_frames; - } else { - frames_for_packet = state->feedback_accumulator_pattern[state->feedback_pattern_out_idx]; - state->feedback_pattern_out_idx = (state->feedback_pattern_out_idx + 1) % FEEDBACK_ACCUMULATOR_SIZE; - } - size_t bytes_for_packet = frames_for_packet * DEVICE_FRAME_SIZE; - unsigned char* packet_buf_ptr = buf_ptr + total_bytes_in_urb; - - if (state->playing_sine && state->feedback_warmed_up) { - for (unsigned int f = 0; f < frames_for_packet; f++) { - double value = sin(state->sine_phase); - int32_t sample_int = (int32_t)(value * SINE_AMPLITUDE); - unsigned char* frame_ptr = packet_buf_ptr + (f * DEVICE_FRAME_SIZE); - frame_ptr[0] = (sample_int >> 0) & 0xFF; frame_ptr[1] = (sample_int >> 8) & 0xFF; frame_ptr[2] = (sample_int >> 16) & 0xFF; - frame_ptr[3] = (sample_int >> 0) & 0xFF; frame_ptr[4] = (sample_int >> 8) & 0xFF; frame_ptr[5] = (sample_int >> 16) & 0xFF; - memset(frame_ptr + 6, 0, DEVICE_FRAME_SIZE - 6); - state->sine_phase += phase_increment; - } - if (state->sine_phase >= 2.0 * M_PI) state->sine_phase -= 2.0 * M_PI; - } else { - memset(packet_buf_ptr, 0, bytes_for_packet); - } - - transfer->iso_packet_desc[i].length = bytes_for_packet; - total_bytes_in_urb += bytes_for_packet; - } - pthread_mutex_unlock(&state->lock); - - transfer->length = total_bytes_in_urb; - - if (is_running && libusb_submit_transfer(transfer) < 0) { - fprintf(stderr, "\nError resubmitting playback transfer\n"); - is_running = false; - } -} - -int perform_initialization_sequence(libusb_device_handle *handle, const struct sample_rate_config *rate_config) { - unsigned char buf[64]; int r; - printf("\n--- STARTING DEVICE CONFIGURATION (per Spec v5.0) ---\n"); - #define CHECK(desc, call) r = (call); if (r < 0) { fprintf(stderr, " [FAIL] %s: %s\n", desc, libusb_error_name(r)); return -1; } else { printf(" [OK] %s (returned %d)\n", desc, r); } - printf(" [INFO] Step 1: Set Interfaces\n"); - r = libusb_set_configuration(handle, 1); if (r < 0 && r != LIBUSB_ERROR_BUSY) { fprintf(stderr, " [FAIL] Set Configuration 1: %s\n", libusb_error_name(r)); return -1; } - for (int i=0; i<=1; i++) { r = libusb_claim_interface(handle, i); if (r < 0) { fprintf(stderr, " [FAIL] Claim Interface %d: %s\n", i, libusb_error_name(r)); return -1; } r = libusb_set_interface_alt_setting(handle, i, 1); if (r < 0) { fprintf(stderr, " [FAIL] Set Alt Setting on Intf %d: %s\n", i, libusb_error_name(r)); return -1; } } - printf(" [OK] Step 1: Interfaces set and claimed.\n"); - printf("\n-- Step 2: Initial Handshake --\n"); CHECK("Status Check", libusb_control_transfer(handle, RT_D2H_VENDOR_DEV, VENDOR_REQ_MODE_CONTROL, 0x0000, 0x0000, buf, 1, USB_TIMEOUT)); - printf("\n-- Step 3: Set Initial Mode --\n"); CHECK("Set Initial Mode", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_MODE_CONTROL, 0x0010, 0x0000, NULL, 0, USB_TIMEOUT)); - printf("\n-- Step 4: Set Sample Rate to %d Hz --\n", rate_config->rate); - CHECK("Set Rate on Feedback EP (0x81)", libusb_control_transfer(handle, RT_H2D_CLASS_EP, UAC_SET_CUR, UAC_SAMPLING_FREQ_CONTROL, EP_PLAYBACK_FEEDBACK, (unsigned char*)rate_config->rate_data, 3, USB_TIMEOUT)); - CHECK("Set Rate on Playback EP (0x02)", libusb_control_transfer(handle, RT_H2D_CLASS_EP, UAC_SET_CUR, UAC_SAMPLING_FREQ_CONTROL, EP_AUDIO_OUT, (unsigned char*)rate_config->rate_data, 3, USB_TIMEOUT)); - printf("\n-- Step 5: Configure Internal Registers --\n"); CHECK("Reg Write 1 (0x0d04)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x0d04, 0x0101, NULL, 0, USB_TIMEOUT)); CHECK("Reg Write 2 (0x0e00)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x0e00, 0x0101, NULL, 0, USB_TIMEOUT)); CHECK("Reg Write 3 (0x0f00)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x0f00, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Reg Write 4 (Rate-Dep)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, rate_config->rate_vendor_wValue, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Reg Write 5 (0x110b)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x110b, 0x0101, NULL, 0, USB_TIMEOUT)); - printf("\n-- Step 6: Enable Streaming --\n"); CHECK("Enable Streaming", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_MODE_CONTROL, 0x0030, 0x0000, NULL, 0, USB_TIMEOUT)); - printf("\n--- CONFIGURATION COMPLETE ---\n\n"); return 0; -} diff --git a/tascam_test_program_jack.c b/tascam_test_program_jack.c deleted file mode 100644 index 1e8ccee..0000000 --- a/tascam_test_program_jack.c +++ /dev/null @@ -1,525 +0,0 @@ -// MIT License -// Copyright (c) 2025 serifpersia - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define ISO_PLAYBACK_PACKETS_PER_TRANSFER 8 -#define NUM_PLAYBACK_TRANSFERS 8 -#define NUM_FEEDBACK_TRANSFERS 8 -#define NUM_CAPTURE_TRANSFERS 8 -#define CAPTURE_PACKET_SIZE 131072 - -#define TASCAM_VID 0x0644 -#define TASCAM_PID 0x8020 -#define EP_AUDIO_OUT 0x02 -#define EP_PLAYBACK_FEEDBACK 0x81 -#define EP_CAPTURE_DATA 0x86 - -#define RT_H2D_CLASS_EP 0x22 -#define RT_D2H_VENDOR_DEV 0xc0 -#define RT_H2D_VENDOR_DEV 0x40 - -#define UAC_SET_CUR 0x01 -#define UAC_SAMPLING_FREQ_CONTROL 0x0100 -#define VENDOR_REQ_REGISTER_WRITE 65 -#define VENDOR_REQ_MODE_CONTROL 73 - -#define BYTES_PER_SAMPLE 3 -#define DEVICE_CHANNELS 4 -#define DEVICE_FRAME_SIZE (DEVICE_CHANNELS * BYTES_PER_SAMPLE) -#define FEEDBACK_PACKET_SIZE 3 -#define MAX_FEEDBACK_PACKETS_PER_URB 5 -#define USB_TIMEOUT 1000 -#define S24_MAX_VALUE 8388607.0 - -#define FEEDBACK_ACCUMULATOR_SIZE 128 -#define WARMUP_THRESHOLD (ISO_PLAYBACK_PACKETS_PER_TRANSFER * 2) - -struct latency_profile_config { - const char *name; - int feedback_packets_per_urb; -}; - -struct sample_rate_config { - int rate; - const unsigned char rate_data[3]; - uint16_t rate_vendor_wValue; - unsigned int feedback_base_value; - unsigned int feedback_max_value; - const struct latency_profile_config profiles[5]; -}; - -static const struct sample_rate_config g_rate_configs[] = { - { 44100, {0x44, 0xac, 0x00}, 0x1000, 42, 46, { {"Lowest",1}, {"Low",1}, {"Normal",2}, {"High",5}, {"Highest",5} } }, - { 48000, {0x80, 0xbb, 0x00}, 0x1002, 46, 50, { {"Lowest",1}, {"Low",1}, {"Normal",2}, {"High",5}, {"Highest",5} } }, - { 88200, {0x88, 0x58, 0x01}, 0x1008, 86, 90, { {"Lowest",1}, {"Low",1}, {"Normal",2}, {"High",5}, {"Highest",5} } }, - { 96000, {0x00, 0x77, 0x01}, 0x100a, 94, 98, { {"Lowest",1}, {"Low",1}, {"Normal",2}, {"High",5}, {"Highest",5} } } -}; -#define NUM_SUPPORTED_RATES (sizeof(g_rate_configs) / sizeof(g_rate_configs[0])) -#define NUM_PROFILES 5 - -static volatile bool is_running = true; -static bool g_debug_mode = false; -jack_client_t *jack_client = NULL; -jack_port_t *jack_playback_ports[DEVICE_CHANNELS]; -jack_port_t *jack_capture_ports[DEVICE_CHANNELS]; - -struct stream_state { - pthread_mutex_t lock; - const struct sample_rate_config *rate_cfg; - const struct latency_profile_config *profile_cfg; - - unsigned char *jack_buffer; - atomic_uint jack_buffer_read_pos_frames; - atomic_uint jack_buffer_write_pos_frames; - unsigned int ring_buffer_frames; - - unsigned int feedback_accumulator_pattern[FEEDBACK_ACCUMULATOR_SIZE]; - unsigned int feedback_pattern_out_idx; - unsigned int feedback_pattern_in_idx; - atomic_bool feedback_synced; - atomic_bool feedback_warmed_up; - - atomic_ulong underrun_count; - atomic_ulong overrun_count; - atomic_ulong sync_loss_count; - atomic_uint current_buffer_fill; -}; - -void print_usage(const char *prog_name); -int perform_initialization_sequence(libusb_device_handle *handle, const struct sample_rate_config *rate_config); -static void LIBUSB_CALL iso_playback_callback(struct libusb_transfer *transfer); -static void LIBUSB_CALL feedback_callback(struct libusb_transfer *transfer); -static void LIBUSB_CALL capture_callback(struct libusb_transfer *transfer); -static void generate_feedback_pattern(unsigned int base_frames, int frame_adjustment, unsigned int* output_pattern); -int jack_process_callback(jack_nframes_t nframes, void *arg); - -void sigint_handler(int signum) { - if (is_running) { - printf("\nCtrl+C detected, stopping...\n"); - is_running = false; - } -} - -int main(int argc, char *argv[]) { - int sample_rate = 0; - int profile_index = -2; // Use -2 as an uninitialized sentinel - - for (int i = 1; i < argc; i++) { - if (strcmp(argv[i], "-r") == 0 && i + 1 < argc) { - sample_rate = atoi(argv[++i]); - } else if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) { - profile_index = atoi(argv[++i]); - } else if (strcmp(argv[i], "-d") == 0 || strcmp(argv[i], "--debug") == 0) { - g_debug_mode = true; - } - } - - if (sample_rate == 0 || profile_index == -2) { - print_usage(argv[0]); - return 1; - } - - const struct sample_rate_config *rate_config = NULL; - for (unsigned int i = 0; i < NUM_SUPPORTED_RATES; i++) { - if (g_rate_configs[i].rate == sample_rate) { - rate_config = &g_rate_configs[i]; - break; - } - } - - if (!rate_config) { fprintf(stderr, "Error: Sample rate %d is not supported.\n", sample_rate); return 1; } - - libusb_device_handle *handle = NULL; - struct libusb_transfer *playback_transfers[NUM_PLAYBACK_TRANSFERS] = {0}; - struct libusb_transfer *feedback_transfers[NUM_FEEDBACK_TRANSFERS] = {0}; - struct libusb_transfer *capture_transfers[NUM_CAPTURE_TRANSFERS] = {0}; - struct stream_state state = {0}; - bool kernel_driver_was_active[2] = {false, false}; - int r = 0; - - printf("--- TASCAM US-144MKII JACK User-Space Driver ---\n"); - - pthread_mutex_init(&state.lock, NULL); - state.rate_cfg = rate_config; - - atomic_init(&state.underrun_count, 0); - atomic_init(&state.overrun_count, 0); - atomic_init(&state.sync_loss_count, 0); - atomic_init(&state.current_buffer_fill, 0); - atomic_init(&state.feedback_synced, false); - atomic_init(&state.feedback_warmed_up, false); - - signal(SIGINT, sigint_handler); - if (libusb_init(NULL) < 0) { r = 1; goto cleanup; } - - handle = libusb_open_device_with_vid_pid(NULL, TASCAM_VID, TASCAM_PID); - if (!handle) { fprintf(stderr, "Device not found\n"); r = 1; goto cleanup; } - - for (int i = 0; i < 2; i++) { - if (libusb_kernel_driver_active(handle, i)) { - kernel_driver_was_active[i] = true; - if ((r = libusb_detach_kernel_driver(handle, i)) != 0) { - fprintf(stderr, "Could not detach kernel driver for interface %d: %s\n", i, libusb_error_name(r)); - r = 1; goto cleanup; - } - } - } - - if (perform_initialization_sequence(handle, rate_config) != 0) { r = 1; goto cleanup; } - - jack_status_t status; - jack_client = jack_client_open("tascam_us144mkii", JackNullOption, &status); - if (jack_client == NULL) { fprintf(stderr, "jack_client_open() failed, status = 0x%2.0x\n", status); r = 1; goto cleanup; } - - unsigned int jack_buffer_size = jack_get_buffer_size(jack_client); - printf("Detected JACK configuration: Buffer = %u frames\n", jack_buffer_size); - - if (profile_index == -1) { - printf("Automatic profile selection enabled...\n"); - switch (sample_rate) { - case 44100: - if (jack_buffer_size <= 49) profile_index = 0; - else if (jack_buffer_size <= 64) profile_index = 1; - else if (jack_buffer_size <= 128) profile_index = 2; - else if (jack_buffer_size <= 256) profile_index = 3; - else profile_index = 4; - break; - case 48000: - if (jack_buffer_size <= 48) profile_index = 0; - else if (jack_buffer_size <= 64) profile_index = 1; - else if (jack_buffer_size <= 128) profile_index = 2; - else if (jack_buffer_size <= 256) profile_index = 3; - else profile_index = 4; - break; - case 88200: - if (jack_buffer_size <= 98) profile_index = 0; - else if (jack_buffer_size <= 128) profile_index = 1; - else if (jack_buffer_size <= 256) profile_index = 2; - else if (jack_buffer_size <= 512) profile_index = 3; - else profile_index = 4; - break; - case 96000: - if (jack_buffer_size <= 96) profile_index = 0; - else if (jack_buffer_size <= 128) profile_index = 1; - else if (jack_buffer_size <= 256) profile_index = 2; - else if (jack_buffer_size <= 512) profile_index = 3; - else profile_index = 4; - break; - default: - printf("Warning: Unknown sample rate for auto-selection, defaulting to 'Lowest'.\n"); - profile_index = 0; - } - printf("Matched JACK buffer %u to Profile %d (%s)\n", jack_buffer_size, profile_index, rate_config->profiles[profile_index].name); - } - - if (profile_index >= NUM_PROFILES) { fprintf(stderr, "Error: Invalid profile index %d.\n", profile_index); return 1; } - const struct latency_profile_config *profile_config = &rate_config->profiles[profile_index]; - state.profile_cfg = profile_config; - - state.ring_buffer_frames = (jack_buffer_size * 2) + 1; - printf("Calculated optimal ring buffer size: %u frames\n", state.ring_buffer_frames); - - state.jack_buffer = malloc(state.ring_buffer_frames * DEVICE_FRAME_SIZE); - if (!state.jack_buffer) { fprintf(stderr, "Failed to allocate intermediate buffer\n"); r = 1; goto cleanup; } - memset(state.jack_buffer, 0, state.ring_buffer_frames * DEVICE_FRAME_SIZE); - - jack_set_process_callback(jack_client, jack_process_callback, &state); - for (int i = 0; i < DEVICE_CHANNELS; i++) { - char port_name[32]; - sprintf(port_name, "playback_%d", i + 1); - jack_playback_ports[i] = jack_port_register(jack_client, port_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0); - sprintf(port_name, "capture_%d", i + 1); - jack_capture_ports[i] = jack_port_register(jack_client, port_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0); - } - if (jack_activate(jack_client)) { fprintf(stderr, "Cannot activate JACK client\n"); r = 1; goto cleanup; } - printf("JACK client activated. Connect your applications.\n"); - - printf("Priming audio buffer before starting USB streams...\n"); - const unsigned int prime_target_frames = state.ring_buffer_frames / 2; - while (is_running) { - unsigned int read_pos = atomic_load(&state.jack_buffer_read_pos_frames); - unsigned int write_pos = atomic_load(&state.jack_buffer_write_pos_frames); - unsigned int avail = (write_pos - read_pos + state.ring_buffer_frames) % state.ring_buffer_frames; - float fill_percent = 100.0f * avail / state.ring_buffer_frames; - fprintf(stdout, "\rPriming buffer... %u / %u frames (%5.1f%%)", avail, prime_target_frames, fill_percent); - fflush(stdout); - if (avail >= prime_target_frames) { - printf("\nBuffer primed. Starting USB streams.\n\n"); - break; - } - usleep(10000); - } - - if (!is_running) goto cleanup; - - const int max_frames_per_packet = (rate_config->rate / 8000) + 2; - const int playback_packet_max_size = max_frames_per_packet * DEVICE_FRAME_SIZE; - const int playback_transfer_size = playback_packet_max_size * ISO_PLAYBACK_PACKETS_PER_TRANSFER; - const int feedback_transfer_size = FEEDBACK_PACKET_SIZE * MAX_FEEDBACK_PACKETS_PER_URB; - const int capture_transfer_size = CAPTURE_PACKET_SIZE; - - for (int i = 0; i < NUM_PLAYBACK_TRANSFERS; i++) { - playback_transfers[i] = libusb_alloc_transfer(ISO_PLAYBACK_PACKETS_PER_TRANSFER); - unsigned char *buf = malloc(playback_transfer_size); - int nominal_packet_size = (rate_config->rate / 8000) * DEVICE_FRAME_SIZE; - int nominal_transfer_size = nominal_packet_size * ISO_PLAYBACK_PACKETS_PER_TRANSFER; - memset(buf, 0, playback_transfer_size); - libusb_fill_iso_transfer(playback_transfers[i], handle, EP_AUDIO_OUT, buf, nominal_transfer_size, ISO_PLAYBACK_PACKETS_PER_TRANSFER, iso_playback_callback, &state, USB_TIMEOUT); - libusb_set_iso_packet_lengths(playback_transfers[i], nominal_packet_size); - if (libusb_submit_transfer(playback_transfers[i]) < 0) { r = 1; goto cleanup; } - } - for (int i = 0; i < NUM_FEEDBACK_TRANSFERS; i++) { - feedback_transfers[i] = libusb_alloc_transfer(profile_config->feedback_packets_per_urb); - unsigned char *buf = malloc(feedback_transfer_size); - libusb_fill_iso_transfer(feedback_transfers[i], handle, EP_PLAYBACK_FEEDBACK, buf, feedback_transfer_size, profile_config->feedback_packets_per_urb, feedback_callback, &state, USB_TIMEOUT); - libusb_set_iso_packet_lengths(feedback_transfers[i], FEEDBACK_PACKET_SIZE); - if (libusb_submit_transfer(feedback_transfers[i]) < 0) { r = 1; goto cleanup; } - } - for (int i = 0; i < NUM_CAPTURE_TRANSFERS; i++) { - capture_transfers[i] = libusb_alloc_transfer(0); - unsigned char *buf = malloc(capture_transfer_size); - libusb_fill_bulk_transfer(capture_transfers[i], handle, EP_CAPTURE_DATA, buf, capture_transfer_size, capture_callback, &state, USB_TIMEOUT); - if (libusb_submit_transfer(capture_transfers[i]) < 0) { r = 1; goto cleanup; } - } - - while (is_running) { - struct timeval tv = {0, 100000}; - libusb_handle_events_timeout_completed(NULL, &tv, NULL); - - if (g_debug_mode) { - unsigned long underruns = atomic_load(&state.underrun_count); - unsigned long overruns = atomic_load(&state.overrun_count); - unsigned long sync_losses = atomic_load(&state.sync_loss_count); - unsigned int buffer_fill = atomic_load(&state.current_buffer_fill); - float fill_percent = 100.0f * buffer_fill / state.ring_buffer_frames; - const char* sync_status = atomic_load(&state.feedback_synced) ? "SYNCED" : "NO SYNC"; - fprintf(stdout, "\rBuffer: %4u/%u frames (%5.1f%%) | Underruns: %-5lu | Overruns: %-5lu | Sync: %-7s (Losses: %lu)", - buffer_fill, state.ring_buffer_frames, fill_percent, underruns, overruns, sync_status, sync_losses); - fflush(stdout); - } - } - - cleanup: - printf("\n"); - is_running = false; - if (jack_client) jack_client_close(jack_client); - for (int i = 0; i < NUM_PLAYBACK_TRANSFERS; i++) if (playback_transfers[i]) libusb_cancel_transfer(playback_transfers[i]); - for (int i = 0; i < NUM_FEEDBACK_TRANSFERS; i++) if (feedback_transfers[i]) libusb_cancel_transfer(feedback_transfers[i]); - for (int i = 0; i < NUM_CAPTURE_TRANSFERS; i++) if (capture_transfers[i]) libusb_cancel_transfer(capture_transfers[i]); - struct timeval tv = {0, 200000}; - libusb_handle_events_timeout_completed(NULL, &tv, NULL); - if (handle) { - libusb_release_interface(handle, 1); - libusb_release_interface(handle, 0); - for(int i = 0; i < 2; i++) if (kernel_driver_was_active[i]) libusb_attach_kernel_driver(handle, i); - libusb_close(handle); - } - for (int i = 0; i < NUM_PLAYBACK_TRANSFERS; i++) if (playback_transfers[i]) { if (playback_transfers[i]->buffer) free(playback_transfers[i]->buffer); libusb_free_transfer(playback_transfers[i]); } - for (int i = 0; i < NUM_FEEDBACK_TRANSFERS; i++) if (feedback_transfers[i]) { if (feedback_transfers[i]->buffer) free(feedback_transfers[i]->buffer); libusb_free_transfer(feedback_transfers[i]); } - for (int i = 0; i < NUM_CAPTURE_TRANSFERS; i++) if (capture_transfers[i]) { if (capture_transfers[i]->buffer) free(capture_transfers[i]->buffer); libusb_free_transfer(capture_transfers[i]); } - pthread_mutex_destroy(&state.lock); - if (state.jack_buffer) free(state.jack_buffer); - if (r != 1) libusb_exit(NULL); - printf("Cleanup complete.\n"); - return r; -} - -int jack_process_callback(jack_nframes_t nframes, void *arg) { - struct stream_state *state = (struct stream_state *)arg; - jack_default_audio_sample_t *in[DEVICE_CHANNELS]; - for (int i = 0; i < DEVICE_CHANNELS; i++) { - in[i] = (jack_default_audio_sample_t *)jack_port_get_buffer(jack_playback_ports[i], nframes); - } - unsigned int read_pos = atomic_load(&state->jack_buffer_read_pos_frames); - unsigned int write_pos = atomic_load(&state->jack_buffer_write_pos_frames); - unsigned int space = (read_pos - write_pos - 1 + state->ring_buffer_frames) % state->ring_buffer_frames; - if (space < nframes) { - atomic_fetch_add(&state->overrun_count, 1); - return 0; - } - for (jack_nframes_t f = 0; f < nframes; f++) { - unsigned int current_write_pos = (write_pos + f) % state->ring_buffer_frames; - unsigned char *frame_ptr = state->jack_buffer + (current_write_pos * DEVICE_FRAME_SIZE); - memset(frame_ptr, 0, DEVICE_FRAME_SIZE); - for (int c = 0; c < 2; c++) { - float sample_float = in[c][f]; - if (sample_float > 1.0f) sample_float = 1.0f; - else if (sample_float < -1.0f) sample_float = -1.0f; - int32_t sample_int = (int32_t)(sample_float * S24_MAX_VALUE); - frame_ptr[c * 3 + 0] = (sample_int >> 0) & 0xFF; - frame_ptr[c * 3 + 1] = (sample_int >> 8) & 0xFF; - frame_ptr[c * 3 + 2] = (sample_int >> 16) & 0xFF; - } - } - atomic_store(&state->jack_buffer_write_pos_frames, (write_pos + nframes) % state->ring_buffer_frames); - return 0; -} - -static void LIBUSB_CALL iso_playback_callback(struct libusb_transfer *transfer) { - if (!is_running) return; - struct stream_state *state = transfer->user_data; - if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { - if (transfer->status != LIBUSB_TRANSFER_CANCELLED) { - fprintf(stderr, "\nPlayback callback error: %s\n", libusb_error_name(transfer->status)); - is_running = false; - } - return; - } - int nominal_frames = state->rate_cfg->rate / 8000; - unsigned char *buf_ptr = transfer->buffer; - size_t total_bytes_in_urb = 0; - for (int i = 0; i < transfer->num_iso_packets; i++) { - unsigned int frames_for_packet; - if (!atomic_load(&state->feedback_warmed_up)) { - frames_for_packet = nominal_frames; - } else { - frames_for_packet = state->feedback_accumulator_pattern[state->feedback_pattern_out_idx]; - state->feedback_pattern_out_idx = (state->feedback_pattern_out_idx + 1) % FEEDBACK_ACCUMULATOR_SIZE; - } - size_t bytes_for_packet = frames_for_packet * DEVICE_FRAME_SIZE; - unsigned char* packet_buf_ptr = buf_ptr + total_bytes_in_urb; - unsigned int read_pos = atomic_load(&state->jack_buffer_read_pos_frames); - unsigned int write_pos = atomic_load(&state->jack_buffer_write_pos_frames); - unsigned int avail = (write_pos - read_pos + state->ring_buffer_frames) % state->ring_buffer_frames; - atomic_store(&state->current_buffer_fill, avail); - if (avail < frames_for_packet) { - memset(packet_buf_ptr, 0, bytes_for_packet); - if (atomic_load(&state->feedback_warmed_up)) { - atomic_fetch_add(&state->underrun_count, 1); - } - } else { - for (unsigned int f = 0; f < frames_for_packet; f++) { - unsigned int current_read_pos = (read_pos + f) % state->ring_buffer_frames; - unsigned char* src_frame_ptr = state->jack_buffer + (current_read_pos * DEVICE_FRAME_SIZE); - unsigned char* dest_frame_ptr = packet_buf_ptr + (f * DEVICE_FRAME_SIZE); - memcpy(dest_frame_ptr, src_frame_ptr, DEVICE_FRAME_SIZE); - } - atomic_store(&state->jack_buffer_read_pos_frames, (read_pos + frames_for_packet) % state->ring_buffer_frames); - } - transfer->iso_packet_desc[i].length = bytes_for_packet; - total_bytes_in_urb += bytes_for_packet; - } - transfer->length = total_bytes_in_urb; - if (is_running && libusb_submit_transfer(transfer) < 0) { - fprintf(stderr, "\nError resubmitting playback transfer\n"); - is_running = false; - } -} - -static void LIBUSB_CALL capture_callback(struct libusb_transfer *transfer) { - if (!is_running) return; - if (transfer->status != LIBUSB_TRANSFER_COMPLETED && transfer->status != LIBUSB_TRANSFER_CANCELLED) { - fprintf(stderr, "\nCapture transfer error: %s\n", libusb_error_name(transfer->status)); - if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) is_running = false; - } - if (is_running && libusb_submit_transfer(transfer) < 0) { - fprintf(stderr, "\nFailed to re-submit capture transfer\n"); - is_running = false; - } -} - -int perform_initialization_sequence(libusb_device_handle *handle, const struct sample_rate_config *rate_config) { - unsigned char buf[64]; int r; - printf("\n--- STARTING DEVICE CONFIGURATION ---\n"); - #define CHECK(desc, call) r = (call); if (r < 0) { fprintf(stderr, " [FAIL] %s: %s\n", desc, libusb_error_name(r)); return -1; } else { printf(" [OK] %s\n", desc); } - CHECK("Set Configuration 1", libusb_set_configuration(handle, 1)); - for (int i=0; i<=1; i++) { CHECK("Claim Interface", libusb_claim_interface(handle, i)); CHECK("Set Alt Setting", libusb_set_interface_alt_setting(handle, i, 1)); } - CHECK("Status Check", libusb_control_transfer(handle, RT_D2H_VENDOR_DEV, VENDOR_REQ_MODE_CONTROL, 0x0000, 0x0000, buf, 1, USB_TIMEOUT)); - CHECK("Set Initial Mode", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_MODE_CONTROL, 0x0010, 0x0000, NULL, 0, USB_TIMEOUT)); - printf("--- Set Sample Rate to %d Hz ---\n", rate_config->rate); - CHECK("Set Rate on Feedback EP (0x81)", libusb_control_transfer(handle, RT_H2D_CLASS_EP, UAC_SET_CUR, UAC_SAMPLING_FREQ_CONTROL, EP_PLAYBACK_FEEDBACK, (unsigned char*)rate_config->rate_data, 3, USB_TIMEOUT)); - CHECK("Set Rate on Playback EP (0x02)", libusb_control_transfer(handle, RT_H2D_CLASS_EP, UAC_SET_CUR, UAC_SAMPLING_FREQ_CONTROL, EP_AUDIO_OUT, (unsigned char*)rate_config->rate_data, 3, USB_TIMEOUT)); - CHECK("Reg Write 1 (0x0d04)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x0d04, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Reg Write 2 (0x0e00)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x0e00, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Reg Write 3 (0x0f00)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x0f00, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Reg Write 4 (Rate-Dep)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, rate_config->rate_vendor_wValue, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Reg Write 5 (0x110b)", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_REGISTER_WRITE, 0x110b, 0x0101, NULL, 0, USB_TIMEOUT)); - CHECK("Enable Streaming", libusb_control_transfer(handle, RT_H2D_VENDOR_DEV, VENDOR_REQ_MODE_CONTROL, 0x0030, 0x0000, NULL, 0, USB_TIMEOUT)); - printf("--- CONFIGURATION COMPLETE ---\n\n"); return 0; -} - -static void generate_feedback_pattern(unsigned int base_frames, int frame_adjustment, unsigned int* output_pattern) { - int num_steps = 8; - int num_adj_packets = abs(frame_adjustment); - int adj = (frame_adjustment > 0) ? 1 : -1; - int accumulator = 0; - for (int i = 0; i < num_steps; i++) { - accumulator += num_adj_packets; - if (accumulator >= num_steps) { - output_pattern[i] = base_frames + adj; - accumulator -= num_steps; - } else { - output_pattern[i] = base_frames; - } - } -} - -static void LIBUSB_CALL feedback_callback(struct libusb_transfer *transfer) { - if (!is_running) return; - struct stream_state *state = transfer->user_data; - if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { - if (transfer->status != LIBUSB_TRANSFER_CANCELLED) { - if (atomic_load(&state->feedback_synced)) { - atomic_fetch_add(&state->sync_loss_count, 1); - } - atomic_store(&state->feedback_synced, false); - atomic_store(&state->feedback_warmed_up, false); - } - goto resubmit; - } - bool sync_lost_this_urb = false; - for (int p = 0; p < transfer->num_iso_packets; p++) { - struct libusb_iso_packet_descriptor *pack = &transfer->iso_packet_desc[p]; - if (pack->status != 0 || pack->actual_length < 1) { sync_lost_this_urb = true; continue; } - uint8_t feedback_value = transfer->buffer[p * FEEDBACK_PACKET_SIZE]; - if (feedback_value >= state->rate_cfg->feedback_base_value && feedback_value <= state->rate_cfg->feedback_max_value) { - unsigned int generated_pattern[8]; - unsigned int base_frames = state->rate_cfg->rate / 8000; - int frame_adjustment = feedback_value - (8 * base_frames); - generate_feedback_pattern(base_frames, frame_adjustment, generated_pattern); - pthread_mutex_lock(&state->lock); - for (int i = 0; i < 8; i++) { - unsigned int in_idx = (state->feedback_pattern_in_idx + i) % FEEDBACK_ACCUMULATOR_SIZE; - state->feedback_accumulator_pattern[in_idx] = generated_pattern[i]; - } - state->feedback_pattern_in_idx = (state->feedback_pattern_in_idx + 8) % FEEDBACK_ACCUMULATOR_SIZE; - pthread_mutex_unlock(&state->lock); - } else { sync_lost_this_urb = true; } - } - if (sync_lost_this_urb) { - if (atomic_load(&state->feedback_synced)) { - atomic_fetch_add(&state->sync_loss_count, 1); - } - atomic_store(&state->feedback_synced, false); - atomic_store(&state->feedback_warmed_up, false); - } else { - atomic_store(&state->feedback_synced, true); - size_t fill_level = (state->feedback_pattern_in_idx - state->feedback_pattern_out_idx + FEEDBACK_ACCUMULATOR_SIZE) % FEEDBACK_ACCUMULATOR_SIZE; - if (!atomic_load(&state->feedback_warmed_up) && fill_level >= WARMUP_THRESHOLD) { - atomic_store(&state->feedback_warmed_up, true); - } - } - resubmit: if (is_running) libusb_submit_transfer(transfer); -} - -void print_usage(const char *prog_name) { - fprintf(stderr, "Usage: %s -r -p [-d | --debug]\n", prog_name); - fprintf(stderr, " -r : 44100, 48000, 88200, 96000\n"); - fprintf(stderr, " -p : -1 for Automatic, or 0-4 for manual (Lowest..Highest)\n"); - fprintf(stderr, " -d, --debug : Enable live monitoring of buffer health.\n"); -} diff --git a/test_program_jack_star.sh b/test_program_jack_star.sh deleted file mode 100755 index 15d7ecf..0000000 --- a/test_program_jack_star.sh +++ /dev/null @@ -1,113 +0,0 @@ -#!/bin/bash - -# Script to compile and run the Tascam user-space JACK driver. -# It interactively asks for the desired sample rate and latency profile. - -# --- Configuration --- -SOURCE_FILE="tascam_test_program_jack.c" -PROG_NAME="test_program_jack" - -# --- Check for root --- -if [ "$EUID" -eq 0 ]; then - echo "Please do not run this script with sudo or as the root user." - echo "It must be run as a regular user who is part of the 'audio' group." - exit 1 -fi - -# --- Cleanup function --- -cleanup() { - echo -e "\nScript interrupted. Cleaning up..." - pkill -f "$PROG_NAME" 2>/dev/null - echo "Driver program stopped." - exit 0 -} - -trap cleanup SIGINT - -# --- Main Script --- -echo "--- Tascam Driver Setup ---" - -# 1. Ask for Sample Rate -echo "Please select a sample rate:" -echo " 1) 44100 Hz" -echo " 2) 48000 Hz" -echo " 3) 88200 Hz" -echo " 4) 96000 Hz" -read -p "Enter choice [1-4, default: 2]: " rate_choice -rate_choice=${rate_choice:-2} # Default to 48000 Hz - -case $rate_choice in - 1) RATE=44100 ;; - 2) RATE=48000 ;; - 3) RATE=88200 ;; - 4) RATE=96000 ;; - *) echo "Invalid choice. Exiting."; exit 1 ;; -esac - -# 2. Ask for Latency Profile -echo -e "\nPlease select a latency profile:" -echo " 1) Automatic (Recommended)" -echo " 2) Lowest" -echo " 3) Low" -echo " 4) Normal" -echo " 5) High" -echo " 6) Highest" -read -p "Enter choice [1-6, default: 1]: " profile_choice -profile_choice=${profile_choice:-1} # Default to Automatic - -case $profile_choice in - 1) PROFILE=-1 ;; # Use -1 to signal "Automatic" mode - 2) PROFILE=0 ;; - 3) PROFILE=1 ;; - 4) PROFILE=2 ;; - 5) PROFILE=3 ;; - 6) PROFILE=4 ;; - *) echo "Invalid choice. Exiting."; exit 1 ;; -esac - -# 3. Ask for Debug Mode -read -p "Enable live monitoring (debug mode)? [y/N]: " debug_choice -DEBUG_FLAG="" -if [[ "$debug_choice" == "y" || "$debug_choice" == "Y" ]]; then - DEBUG_FLAG="-d" -fi - -# 4. Instruct user to start JACK -echo "------------------------------------------------------------" -echo "Configuration selected:" -echo " - Sample Rate: $RATE Hz" -echo "" -echo "ACTION REQUIRED:" -echo "Please start the JACK server now (e.g., using QJackCtl)." -echo "Ensure its Sample Rate is set to $RATE Hz." -echo "------------------------------------------------------------" -read -p "Press Enter when JACK is running..." - -# 5. Verify JACK is running -echo "Checking for a running JACK server..." -if ! jack_lsp >/dev/null 2>&1; then - echo "ERROR: JACK server was not detected. Please start it and try again." - exit 1 -fi -echo "JACK server detected." - -# 6. Compile the driver program -echo "Compiling the driver program..." -rm -f "$PROG_NAME" -gcc -o "$PROG_NAME" "$SOURCE_FILE" -Wall -lusb-1.0 -lpthread -lm -ljack -if [ $? -ne 0 ]; then - echo "Compilation failed!" - exit 1 -fi -echo "Compilation successful." - -# 7. Run the driver -echo "" -echo "--- Starting Tascam User-Space Driver ---" -echo "Connect your JACK clients now (e.g., Ardour, QJackCtl Graph/Patchbay)." -echo "Press Ctrl+C in this terminal to stop the driver." -echo "" - -"./$PROG_NAME" -r "$RATE" -p "$PROFILE" $DEBUG_FLAG - -echo "Driver stopped."