int
JackCoreMidiDriver::Attach()
{
jack_nframes_t buffer_size = fEngineControl->fBufferSize;
jack_port_id_t index;
jack_nframes_t latency = buffer_size;
jack_latency_range_t latency_range;
const char *name;
JackPort *port;
JackCoreMidiPort *port_obj;
latency_range.max = latency;
latency_range.min = latency;
// Physical inputs
for (int i = 0; i < num_physical_inputs; i++) {
port_obj = physical_input_ports[i];
name = port_obj->GetName();
if (fEngine->PortRegister(fClientControl.fRefNum, name,
JACK_DEFAULT_MIDI_TYPE,
CaptureDriverFlags, buffer_size, &index) < 0) {
jack_error("JackCoreMidiDriver::Attach - cannot register physical "
"input port with name '%s'.", name);
// X: Do we need to deallocate ports?
return -1;
}
port = fGraphManager->GetPort(index);
port->SetAlias(port_obj->GetAlias());
port->SetLatencyRange(JackCaptureLatency, &latency_range);
fCapturePortList[i] = index;
}
// Virtual inputs
for (int i = 0; i < num_virtual_inputs; i++) {
port_obj = virtual_input_ports[i];
name = port_obj->GetName();
if (fEngine->PortRegister(fClientControl.fRefNum, name,
JACK_DEFAULT_MIDI_TYPE,
CaptureDriverFlags, buffer_size, &index) < 0) {
jack_error("JackCoreMidiDriver::Attach - cannot register virtual "
"input port with name '%s'.", name);
// X: Do we need to deallocate ports?
return -1;
}
port = fGraphManager->GetPort(index);
port->SetAlias(port_obj->GetAlias());
port->SetLatencyRange(JackCaptureLatency, &latency_range);
fCapturePortList[num_physical_inputs + i] = index;
}
if (! fEngineControl->fSyncMode) {
latency += buffer_size;
latency_range.max = latency;
latency_range.min = latency;
}
// Physical outputs
for (int i = 0; i < num_physical_outputs; i++) {
port_obj = physical_output_ports[i];
name = port_obj->GetName();
fEngine->PortRegister(fClientControl.fRefNum, name,
JACK_DEFAULT_MIDI_TYPE,
PlaybackDriverFlags, buffer_size, &index);
if (index == NO_PORT) {
jack_error("JackCoreMidiDriver::Attach - cannot register physical "
"output port with name '%s'.", name);
// X: Do we need to deallocate ports?
return -1;
}
port = fGraphManager->GetPort(index);
port->SetAlias(port_obj->GetAlias());
port->SetLatencyRange(JackPlaybackLatency, &latency_range);
fPlaybackPortList[i] = index;
}
// Virtual outputs
for (int i = 0; i < num_virtual_outputs; i++) {
port_obj = virtual_output_ports[i];
name = port_obj->GetName();
fEngine->PortRegister(fClientControl.fRefNum, name,
JACK_DEFAULT_MIDI_TYPE,
PlaybackDriverFlags, buffer_size, &index);
if (index == NO_PORT) {
jack_error("JackCoreMidiDriver::Attach - cannot register virtual "
"output port with name '%s'.", name);
// X: Do we need to deallocate ports?
return -1;
}
port = fGraphManager->GetPort(index);
port->SetAlias(port_obj->GetAlias());
port->SetLatencyRange(JackPlaybackLatency, &latency_range);
fPlaybackPortList[num_physical_outputs + i] = index;
}
return 0;
}
int JackClient::HandleLatencyCallback(int status)
{
jack_latency_callback_mode_t mode = (status == 0) ? JackCaptureLatency : JackPlaybackLatency;
jack_latency_range_t latency = { UINT32_MAX, 0 };
/* first setup all latency values of the ports.
* this is based on the connections of the ports.
*/
list<jack_port_id_t>::iterator it;
for (it = fPortList.begin(); it != fPortList.end(); it++) {
JackPort* port = GetGraphManager()->GetPort(*it);
if ((port->GetFlags() & JackPortIsOutput) && (mode == JackPlaybackLatency)) {
GetGraphManager()->RecalculateLatency(*it, mode);
}
if ((port->GetFlags() & JackPortIsInput) && (mode == JackCaptureLatency)) {
GetGraphManager()->RecalculateLatency(*it, mode);
}
}
if (!fLatency) {
/*
* default action is to assume all ports depend on each other.
* then always take the maximum latency.
*/
if (mode == JackPlaybackLatency) {
/* iterate over all OutputPorts, to find maximum playback latency
*/
for (it = fPortList.begin(); it != fPortList.end(); it++) {
JackPort* port = GetGraphManager()->GetPort(*it);
if (port->GetFlags() & JackPortIsOutput) {
jack_latency_range_t other_latency;
port->GetLatencyRange(mode, &other_latency);
if (other_latency.max > latency.max) {
latency.max = other_latency.max;
}
if (other_latency.min < latency.min) {
latency.min = other_latency.min;
}
}
}
if (latency.min == UINT32_MAX) {
latency.min = 0;
}
/* now set the found latency on all input ports
*/
for (it = fPortList.begin(); it != fPortList.end(); it++) {
JackPort* port = GetGraphManager()->GetPort(*it);
if (port->GetFlags() & JackPortIsInput) {
port->SetLatencyRange(mode, &latency);
}
}
}
if (mode == JackCaptureLatency) {
/* iterate over all InputPorts, to find maximum playback latency
*/
for (it = fPortList.begin(); it != fPortList.end(); it++) {
JackPort* port = GetGraphManager()->GetPort(*it);
if (port->GetFlags() & JackPortIsInput) {
jack_latency_range_t other_latency;
port->GetLatencyRange(mode, &other_latency);
if (other_latency.max > latency.max) {
latency.max = other_latency.max;
}
if (other_latency.min < latency.min) {
latency.min = other_latency.min;
}
}
}
if (latency.min == UINT32_MAX) {
latency.min = 0;
}
/* now set the found latency on all output ports
*/
for (it = fPortList.begin(); it != fPortList.end(); it++) {
JackPort* port = GetGraphManager()->GetPort(*it);
if (port->GetFlags() & JackPortIsOutput) {
port->SetLatencyRange(mode, &latency);
}
}
}
return 0;
}
/* we have a latency callback setup by the client,
* lets use it...
*/
fLatency(mode, fLatencyArg);
return 0;
}
int JackAlsaDriver::Attach()
{
JackPort* port;
int port_index;
unsigned long port_flags = (unsigned long)CaptureDriverFlags;
char name[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];
char alias[JACK_CLIENT_NAME_SIZE + JACK_PORT_NAME_SIZE];
jack_latency_range_t range;
assert(fCaptureChannels < DRIVER_PORT_NUM);
assert(fPlaybackChannels < DRIVER_PORT_NUM);
alsa_driver_t* alsa_driver = (alsa_driver_t*)fDriver;
if (alsa_driver->has_hw_monitoring)
port_flags |= JackPortCanMonitor;
// ALSA driver may have changed the values
JackAudioDriver::SetBufferSize(alsa_driver->frames_per_cycle);
JackAudioDriver::SetSampleRate(alsa_driver->frame_rate);
jack_log("JackAlsaDriver::Attach fBufferSize %ld fSampleRate %ld", fEngineControl->fBufferSize, fEngineControl->fSampleRate);
for (int i = 0; i < fCaptureChannels; i++) {
snprintf(alias, sizeof(alias) - 1, "%s:%s:out%d", fAliasName, fCaptureDriverName, i + 1);
snprintf(name, sizeof(name) - 1, "%s:capture_%d", fClientControl.fName, i + 1);
if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, (JackPortFlags)port_flags, fEngineControl->fBufferSize)) == NO_PORT) {
jack_error("driver: cannot register port for %s", name);
return -1;
}
port = fGraphManager->GetPort(port_index);
port->SetAlias(alias);
range.min = range.max = alsa_driver->frames_per_cycle + alsa_driver->capture_frame_latency;
port->SetLatencyRange(JackCaptureLatency, &range);
fCapturePortList[i] = port_index;
jack_log("JackAlsaDriver::Attach fCapturePortList[i] %ld ", port_index);
}
port_flags = (unsigned long)PlaybackDriverFlags;
for (int i = 0; i < fPlaybackChannels; i++) {
snprintf(alias, sizeof(alias) - 1, "%s:%s:in%d", fAliasName, fPlaybackDriverName, i + 1);
snprintf(name, sizeof(name) - 1, "%s:playback_%d", fClientControl.fName, i + 1);
if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, (JackPortFlags)port_flags, fEngineControl->fBufferSize)) == NO_PORT) {
jack_error("driver: cannot register port for %s", name);
return -1;
}
port = fGraphManager->GetPort(port_index);
port->SetAlias(alias);
// Add one buffer more latency if "async" mode is used...
range.min = range.max = (alsa_driver->frames_per_cycle * (alsa_driver->user_nperiods - 1)) +
((fEngineControl->fSyncMode) ? 0 : fEngineControl->fBufferSize) + alsa_driver->playback_frame_latency;
port->SetLatencyRange(JackPlaybackLatency, &range);
fPlaybackPortList[i] = port_index;
jack_log("JackAlsaDriver::Attach fPlaybackPortList[i] %ld ", port_index);
// Monitor ports
if (fWithMonitorPorts) {
jack_log("Create monitor port");
snprintf(name, sizeof(name) - 1, "%s:monitor_%d", fClientControl.fName, i + 1);
if ((port_index = fGraphManager->AllocatePort(fClientControl.fRefNum, name, JACK_DEFAULT_AUDIO_TYPE, MonitorDriverFlags, fEngineControl->fBufferSize)) == NO_PORT) {
jack_error ("ALSA: cannot register monitor port for %s", name);
} else {
port = fGraphManager->GetPort(port_index);
range.min = range.max = alsa_driver->frames_per_cycle;
port->SetLatencyRange(JackCaptureLatency, &range);
fMonitorPortList[i] = port_index;
}
}
}
if (alsa_driver->midi) {
int err = (alsa_driver->midi->attach)(alsa_driver->midi);
if (err)
jack_error ("ALSA: cannot attach MIDI: %d", err);
}
return 0;
}
