// Attempt to connect to the Jack server
static PyObject* attach(PyObject* self, PyObject* args)
{
char* cname;
if (! PyArg_ParseTuple(args, "s", &cname))
return NULL;
pyjack_client_t * client = self_or_global_client(self);
if(client->pjc != NULL) {
PyErr_SetString(JackUsageError, "A connection is already established.");
return NULL;
}
jack_status_t status;
client->pjc = jack_client_open(cname, JackNoStartServer, &status);
if(client->pjc == NULL) {
//TODO check status
PyErr_SetString(JackNotConnectedError, "Failed to connect to Jack audio server.");
return NULL;
}
jack_on_shutdown(client->pjc, pyjack_shutdown, client);
signal(SIGHUP, pyjack_hangup); // TODO: This just works with global clients
if(jack_set_process_callback(client->pjc, pyjack_process, client) != 0) {
PyErr_SetString(JackError, "Failed to set jack process callback.");
return NULL;
}
if(jack_set_buffer_size_callback(client->pjc, pyjack_buffer_size_changed, client) != 0) {
PyErr_SetString(JackError, "Failed to set jack buffer size callback.");
return NULL;
}
if(jack_set_sample_rate_callback(client->pjc, pyjack_sample_rate_changed, client) != 0) {
PyErr_SetString(JackError, "Failed to set jack sample rate callback.");
return NULL;
}
if(jack_set_port_registration_callback(client->pjc, pyjack_port_registration, client) != 0) {
PyErr_SetString(JackError, "Failed to set jack port registration callback.");
return NULL;
}
if(jack_set_graph_order_callback(client->pjc, pyjack_graph_order, client) != 0) {
PyErr_SetString(JackError, "Failed to set jack graph order callback.");
return NULL;
}
if(jack_set_xrun_callback(client->pjc, pyjack_xrun, client) != 0) {
PyErr_SetString(JackError, "Failed to set jack xrun callback.");
return NULL;
}
// Get buffer size
client->buffer_size = jack_get_buffer_size(client->pjc);
// Success!
Py_INCREF(Py_None);
return Py_None;
}
void gojack_generic_callback_sync_destroy(struct gojack_generic_callback_sync *sync) {
jack_set_freewheel_callback(sync->client, NULL, NULL);
jack_set_buffer_size_callback(sync->client, NULL, NULL);
jack_set_sample_rate_callback(sync->client, NULL, NULL);
jack_set_client_registration_callback(sync->client, NULL, NULL);
jack_set_port_registration_callback(sync->client, NULL, NULL);
jack_set_port_connect_callback(sync->client, NULL, NULL);
jack_set_port_rename_callback(sync->client, NULL, NULL);
jack_set_graph_order_callback(sync->client, NULL, NULL);
jack_set_xrun_callback(sync->client, NULL, NULL);
jack_set_latency_callback(sync->client, NULL, NULL);
cgo_callback_sync_destroy(sync->base);
pthread_mutex_destroy(&sync->lock);
free(sync);
}
bool SC_JackDriver::DriverSetup(int* outNumSamples, double* outSampleRate)
{
char* clientName = 0;
char* serverName = 0;
if (mWorld->hw->mInDeviceName && (strlen(mWorld->hw->mInDeviceName) > 0)) {
// parse string <serverName>:<clientName>
SC_StringParser sp(mWorld->hw->mInDeviceName, ':');
if (!sp.AtEnd()) serverName = strdup(sp.NextToken());
if (!sp.AtEnd()) clientName = strdup(sp.NextToken());
if (clientName == 0) {
// no semicolon found
clientName = serverName;
serverName = 0;
} else if (strlen(clientName) == 0) {
free(clientName);
clientName = 0;
}
}
mClient = jack_client_open(
clientName ? clientName : kJackDefaultClientName,
serverName ? JackServerName : JackNullOption,
NULL, serverName);
if (serverName) free(serverName); if (clientName) free(clientName);
if (mClient == 0) return false;
scprintf("%s: client name is '%s'\n", kJackDriverIdent, jack_get_client_name(mClient));
// create jack I/O ports
mInputList = new SC_JackPortList(mClient, mWorld->mNumInputs, JackPortIsInput);
mOutputList = new SC_JackPortList(mClient, mWorld->mNumOutputs, JackPortIsOutput);
// register callbacks
jack_set_process_callback(mClient, sc_jack_process_cb, this);
jack_set_buffer_size_callback(mClient, sc_jack_bufsize_cb, this);
jack_set_sample_rate_callback(mClient, sc_jack_srate_cb, this);
jack_set_graph_order_callback(mClient, sc_jack_graph_order_cb, this);
jack_set_xrun_callback(mClient, sc_jack_xrun_cb, this);
jack_on_shutdown(mClient, sc_jack_shutdown_cb, mWorld);
*outNumSamples = (int)jack_get_buffer_size(mClient);
*outSampleRate = (double)jack_get_sample_rate(mClient);
return true;
}
int
main (int argc, char *argv[])
{
jack_client_t *client;
jack_options_t options = JackNullOption;
jack_status_t status;
if ((client = jack_client_open ("event-monitor", options, &status, NULL)) == 0) {
fprintf (stderr, "jack_client_open() failed, "
"status = 0x%2.0x\n", status);
if (status & JackServerFailed) {
fprintf (stderr, "Unable to connect to JACK server\n");
}
return 1;
}
if (jack_set_port_registration_callback (client, port_callback, NULL)) {
fprintf (stderr, "cannot set port registration callback\n");
return 1;
}
if (jack_set_port_connect_callback (client, connect_callback, NULL)) {
fprintf (stderr, "cannot set port connect callback\n");
return 1;
}
if (jack_set_client_registration_callback (client, client_callback, NULL)) {
fprintf (stderr, "cannot set client registration callback\n");
return 1;
}
if (jack_set_graph_order_callback (client, graph_callback, NULL)) {
fprintf (stderr, "cannot set graph order registration callback\n");
return 1;
}
if (jack_set_property_change_callback (client, (JackPropertyChangeCallback) propchange, 0)) {
fprintf (stderr, "cannot set property change callback\n");
return 1;
}
if (jack_activate (client)) {
fprintf (stderr, "cannot activate client");
return 1;
}
sleep (-1);
exit (0);
}
struct gojack_generic_callback_sync * gojack_generic_callback_sync_create(jack_client_t *client) {
struct gojack_generic_callback_sync *sync = (struct gojack_generic_callback_sync *) malloc(sizeof(struct gojack_generic_callback_sync));
void *arg = (void *) sync;
sync->base = cgo_callback_sync_create();
cgo_callback_sync_set_log_callback(sync->base, &handle_log, NULL);
pthread_mutex_init(&sync->lock, NULL);
sync->client = client;
jack_set_freewheel_callback(client, &handle_freewheel, arg);
jack_set_buffer_size_callback(client, &handle_buffer_size, arg);
//jack_set_sample_rate_callback(client, &handle_sample_rate, arg);
jack_set_client_registration_callback(client, &handle_client_registration, arg);
jack_set_port_registration_callback(client, &handle_port_registration, arg);
jack_set_port_connect_callback(client, &handle_port_connect, arg);
jack_set_port_rename_callback(client, &handle_port_rename, arg);
jack_set_graph_order_callback(client, &handle_graph_order, arg);
jack_set_xrun_callback(client, &handle_xrun, arg);
//jack_set_latency_callback(client, &handle_latency, arg);
return sync;
}
/*****************************************************************************
* Open: create a JACK client
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
char psz_name[32];
audio_output_t *p_aout = (audio_output_t *)p_this;
struct aout_sys_t *p_sys = NULL;
int status = VLC_SUCCESS;
unsigned int i;
int i_error;
/* Allocate structure */
p_sys = calloc( 1, sizeof( aout_sys_t ) );
if( p_sys == NULL )
{
status = VLC_ENOMEM;
goto error_out;
}
p_aout->sys = p_sys;
p_sys->latency = 0;
/* Connect to the JACK server */
snprintf( psz_name, sizeof(psz_name), "vlc_%d", getpid());
psz_name[sizeof(psz_name) - 1] = '\0';
p_sys->p_jack_client = jack_client_open( psz_name,
JackNullOption | JackNoStartServer,
NULL );
if( p_sys->p_jack_client == NULL )
{
msg_Err( p_aout, "failed to connect to JACK server" );
status = VLC_EGENERIC;
goto error_out;
}
/* Set the process callback */
jack_set_process_callback( p_sys->p_jack_client, Process, p_aout );
jack_set_graph_order_callback ( p_sys->p_jack_client, GraphChange, p_aout );
p_aout->pf_play = aout_PacketPlay;
p_aout->pf_pause = aout_PacketPause;
p_aout->pf_flush = aout_PacketFlush;
aout_PacketInit( p_aout, &p_sys->packet,
jack_get_buffer_size( p_sys->p_jack_client ) );
aout_VolumeSoftInit( p_aout );
/* JACK only supports fl32 format */
p_aout->format.i_format = VLC_CODEC_FL32;
// TODO add buffer size callback
p_aout->format.i_rate = jack_get_sample_rate( p_sys->p_jack_client );
p_sys->i_channels = aout_FormatNbChannels( &p_aout->format );
p_sys->p_jack_ports = malloc( p_sys->i_channels *
sizeof(jack_port_t *) );
if( p_sys->p_jack_ports == NULL )
{
status = VLC_ENOMEM;
goto error_out;
}
p_sys->p_jack_buffers = malloc( p_sys->i_channels *
sizeof(jack_sample_t *) );
if( p_sys->p_jack_buffers == NULL )
{
status = VLC_ENOMEM;
goto error_out;
}
/* Create the output ports */
for( i = 0; i < p_sys->i_channels; i++ )
{
snprintf( psz_name, sizeof(psz_name), "out_%d", i + 1);
psz_name[sizeof(psz_name) - 1] = '\0';
p_sys->p_jack_ports[i] = jack_port_register( p_sys->p_jack_client,
psz_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0 );
if( p_sys->p_jack_ports[i] == NULL )
{
msg_Err( p_aout, "failed to register a JACK port" );
status = VLC_EGENERIC;
goto error_out;
}
}
/* Tell the JACK server we are ready */
i_error = jack_activate( p_sys->p_jack_client );
if( i_error )
{
msg_Err( p_aout, "failed to activate JACK client (error %d)", i_error );
status = VLC_EGENERIC;
goto error_out;
}
/* Auto connect ports if we were asked to */
if( var_InheritBool( p_aout, AUTO_CONNECT_OPTION ) )
{
unsigned int i_in_ports;
char *psz_regex = var_InheritString( p_aout, CONNECT_REGEX_OPTION );
const char **pp_in_ports = jack_get_ports( p_sys->p_jack_client,
psz_regex, NULL,
JackPortIsInput );
free( psz_regex );
/* Count the number of returned ports */
i_in_ports = 0;
while( pp_in_ports && pp_in_ports[i_in_ports] )
{
i_in_ports++;
}
/* Tie the output ports to JACK input ports */
for( i = 0; i_in_ports > 0 && i < p_sys->i_channels; i++ )
{
const char* psz_in = pp_in_ports[i % i_in_ports];
const char* psz_out = jack_port_name( p_sys->p_jack_ports[i] );
i_error = jack_connect( p_sys->p_jack_client, psz_out, psz_in );
if( i_error )
{
msg_Err( p_aout, "failed to connect port %s to port %s (error %d)",
psz_out, psz_in, i_error );
}
else
{
msg_Dbg( p_aout, "connecting port %s to port %s",
psz_out, psz_in );
}
}
free( pp_in_ports );
}
msg_Dbg( p_aout, "JACK audio output initialized (%d channels, rate=%d)",
p_sys->i_channels, p_aout->format.i_rate );
error_out:
/* Clean up, if an error occurred */
if( status != VLC_SUCCESS && p_sys != NULL)
{
if( p_sys->p_jack_client )
{
jack_deactivate( p_sys->p_jack_client );
jack_client_close( p_sys->p_jack_client );
aout_PacketDestroy( p_aout );
}
free( p_sys->p_jack_ports );
free( p_sys->p_jack_buffers );
free( p_sys );
}
return status;
}
mfp_context *
mfp_jack_startup(char * client_name, int num_inputs, int num_outputs)
{
mfp_context * ctxt;
jack_status_t status;
jack_port_t * port;
int i;
char namebuf[16];
ctxt = mfp_context_new(CTYPE_JACK);
if ((ctxt->info.jack->client = jack_client_open(client_name, JackNullOption, &status, NULL)) == 0) {
fprintf (stderr, "jack_client_open() failed.");
return NULL;
}
/* callbacks */
jack_set_process_callback(ctxt->info.jack->client, process_cb, ctxt);
jack_set_graph_order_callback(ctxt->info.jack->client, reorder_cb, ctxt);
/* no info logging to console */
jack_set_info_function(info_cb);
jack_set_error_function(info_cb);
/* create application input and output ports */
if (num_inputs > 0) {
ctxt->info.jack->input_ports = g_array_new(TRUE, TRUE, sizeof(jack_port_t *));
for(i=0; i<num_inputs; i++) {
snprintf(namebuf, 16, "in_%d", i);
port = jack_port_register (ctxt->info.jack->client, namebuf, JACK_DEFAULT_AUDIO_TYPE,
JackPortIsInput, i);
g_array_append_val(ctxt->info.jack->input_ports, port);
}
}
if (num_outputs > 0) {
ctxt->info.jack->output_ports = g_array_new(TRUE, TRUE, sizeof(jack_port_t *));
for(i=0; i<num_outputs; i++) {
snprintf(namebuf, 16, "out_%d", i);
port = jack_port_register (ctxt->info.jack->client, namebuf, JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, i);
g_array_append_val(ctxt->info.jack->output_ports, port);
}
}
/* find out sample rate */
ctxt->samplerate = jack_get_sample_rate(ctxt->info.jack->client);
ctxt->blocksize = jack_get_buffer_size(ctxt->info.jack->client);
mfp_in_latency = 3000.0 * ctxt->blocksize / ctxt->samplerate;
mfp_out_latency = 3000.0 * ctxt->blocksize / ctxt->samplerate;
printf("jack_startup: samplerate=%d, blocksize=%d, in_latency=%.1f, out_latency = %.1f\n",
ctxt->samplerate, ctxt->blocksize, mfp_in_latency, mfp_out_latency);
/* tell the JACK server that we are ready to roll */
if (jack_activate (ctxt->info.jack->client)) {
fprintf (stderr, "cannot activate client");
return NULL;
}
else {
ctxt->activated = 1;
}
return ctxt;
}
