// Crude way of automatically connecting up jack ports
int autoconnect_jack_ports( jack_client_t* client )
{
const char **all_ports;
unsigned int ch=0;
int i;
// Get a list of all the jack ports
all_ports = jack_get_ports(client, NULL, NULL, JackPortIsOutput);
if (!all_ports) {
rotter_fatal("autoconnect_jack_ports(): jack_get_ports() returned NULL.");
return -1;
}
// Step through each port name
for (i = 0; all_ports[i]; ++i) {
// Connect the port
if (connect_jack_port( all_ports[i], inport[ch] )) {
return -1;
}
// Found enough ports ?
if (++ch >= channels) break;
}
free( all_ports );
return 0;
}
static
jack_client_t* init_jack( const char * client_name, const char* connect_port )
{
jack_status_t status;
jack_options_t options = JackNoStartServer;
jack_client_t *client = NULL;
// Register with Jack
if ((client = jack_client_open(client_name, options, &status)) == 0) {
fprintf(stderr, "Failed to start jack client: %d\n", status);
exit(1);
}
if (!quiet) printf("JACK client registered as '%s'.\n", jack_get_client_name( client ) );
// Create our pair of output ports
if (!(input_port = jack_port_register(client, "in", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0))) {
fprintf(stderr, "Cannot register input port 'in'.\n");
exit(1);
}
// Register shutdown callback
jack_on_shutdown (client, shutdown_callback_jack, NULL );
// Register the peak audio callback
jack_set_process_callback(client, process_peak, 0);
// Activate the client
if (jack_activate(client)) {
fprintf(stderr, "Cannot activate client.\n");
exit(1);
}
// Connect up our input port ?
if (connect_port) {
connect_jack_port( client, input_port, connect_port );
}
return client;
}
int main(int argc, char *argv[])
{
int autoconnect = 0;
jack_options_t jack_opt = JackNullOption;
char *client_name = DEFAULT_CLIENT_NAME;
char *connect_left = NULL;
char *connect_right = NULL;
const char *format_name = NULL;
int bitrate = DEFAULT_BITRATE;
int sync_period = DEFAULT_SYNC_PERIOD;
float sleep_time = 0;
time_t next_sync = 0;
int i,opt;
// Make STDOUT unbuffered
setbuf(stdout, NULL);
// Parse Switches
while ((opt = getopt(argc, argv, "al:r:n:N:O:p:jf:b:Q:d:c:R:L:s:uvqh")) != -1) {
switch (opt) {
case 'a': autoconnect = 1; break;
case 'l': connect_left = optarg; break;
case 'r': connect_right = optarg; break;
case 'n': client_name = optarg; break;
case 'N': archive_name = optarg; break;
case 'O': originator = strdup(optarg); break;
case 'p': archive_period_seconds = atol(optarg); break;
case 'j': jack_opt |= JackNoStartServer; break;
case 'f': format_name = rotter_str_tolower(optarg); break;
case 'b': bitrate = atoi(optarg); break;
case 'Q': vbr_quality = atof(optarg); break;
case 'd': delete_hours = atoi(optarg); break;
case 'c': channels = atoi(optarg); break;
case 'R': rb_duration = atof(optarg); break;
case 'L': file_layout = optarg; break;
case 's': sync_period = atoi(optarg); break;
case 'u': utc = 1; break;
case 'v': verbose = 1; break;
case 'q': quiet = 1; break;
default: usage(); break;
}
}
// Validate parameters
if (quiet && verbose) {
rotter_error("Can't be quiet and verbose at the same time.");
usage();
}
// Check the number of channels
if (channels!=1 && channels!=2) {
rotter_error("Number of channels should be either 1 or 2.");
usage();
}
// Check remaining arguments
argc -= optind;
argv += optind;
if (argc!=1) {
rotter_error("%s requires a root directory argument.", PACKAGE_NAME);
usage();
} else {
root_directory = argv[0];
if (root_directory[strlen(root_directory)-1] == '/')
root_directory[strlen(root_directory)-1] = 0;
if (rotter_directory_exists(root_directory)) {
rotter_debug("Root directory: %s", root_directory);
} else {
rotter_fatal("Root directory does not exist: %s", root_directory);
goto cleanup;
}
}
// Search for the selected output format
if (format_name) {
for(i=0; format_list[i].name; i++) {
if (strcmp( format_list[i].name, format_name ) == 0) {
// Found desired format
output_format = &format_list[i];
rotter_debug("User selected [%s] '%s'.", output_format->name, output_format->desc);
break;
}
}
if (output_format==NULL) {
rotter_fatal("Failed to find format [%s], please check the supported format list.", format_name);
goto cleanup;
}
} else {
output_format = &format_list[0];
}
// No originator defined?
if (!originator) {
originator = rotter_get_hostname();
}
// Initialise JACK
if (init_jack( client_name, jack_opt )) {
rotter_debug("Failed to initialise Jack client.");
goto cleanup;
}
// Create ring buffers
if (init_ringbuffers()) {
rotter_debug("Failed to initialise ring buffers.");
goto cleanup;
}
// Create temporary buffer for reading samples into
if (init_tmpbuffers(output_format->samples_per_frame)) {
rotter_debug("Failed to initialise temporary buffers.");
goto cleanup;
}
// Initialise encoder
encoder = output_format->initfunc(output_format, channels, bitrate);
if (encoder==NULL) {
rotter_debug("Failed to initialise encoder.");
goto cleanup;
}
// Activate JACK
if (jack_activate(client)) {
rotter_fatal("Cannot activate JACK client.");
goto cleanup;
}
// Setup signal handlers
signal(SIGTERM, rotter_termination_handler);
signal(SIGINT, rotter_termination_handler);
signal(SIGHUP, rotter_termination_handler);
// Auto-connect our input ports ?
if (autoconnect) autoconnect_jack_ports( client );
if (connect_left) connect_jack_port( connect_left, inport[0] );
if (connect_right && channels == 2) connect_jack_port( connect_right, inport[1] );
// Calculate period to wait when there is no audio to process
sleep_time = (2.0f * output_format->samples_per_frame / jack_get_sample_rate( client ));
rotter_debug("Sleep period is %dms.", (int)(sleep_time * 1000));
while( rotter_run_state == ROTTER_STATE_RUNNING ) {
time_t now = time(NULL);
int samples_processed = rotter_process_audio();
if (samples_processed <= 0) {
usleep(sleep_time * 1000000);
}
// Is it time to sync the encoded audio to disk?
if (next_sync < now) {
rotter_sync_to_disk();
next_sync = now + sync_period;
}
deletefiles_cleanup_child();
}
cleanup:
// Clean up JACK
deinit_jack();
// Free buffers and close files
deinit_tmpbuffers();
deinit_ringbuffers();
// Shut down encoder
if (encoder)
encoder->deinit();
// Free the originator string
if (originator)
free(originator);
// Did something go wrong?
if (rotter_run_state == ROTTER_STATE_QUITING) {
return EXIT_SUCCESS;
} else {
return EXIT_FAILURE;
}
}
