SERVER_EXPORT const jack_driver_desc_t* driver_get_descriptor ()
{
jack_driver_desc_t * desc;
jack_driver_desc_filler_t filler;
jack_driver_param_value_t value;
desc = jack_driver_descriptor_construct("alsa", JackDriverMaster, "Linux ALSA API based audio backend", &filler);
strcpy(value.str, "none");
jack_driver_descriptor_add_parameter(desc, &filler, "capture", 'C', JackDriverParamString, &value, NULL, "Provide capture ports. Optionally set device", NULL);
jack_driver_descriptor_add_parameter(desc, &filler, "playback", 'P', JackDriverParamString, &value, NULL, "Provide playback ports. Optionally set device", NULL);
strcpy(value.str, "hw:0");
jack_driver_descriptor_add_parameter(desc, &filler, "device", 'd', JackDriverParamString, &value, enum_alsa_devices(), "ALSA device name", NULL);
value.ui = 48000U;
jack_driver_descriptor_add_parameter(desc, &filler, "rate", 'r', JackDriverParamUInt, &value, NULL, "Sample rate", NULL);
value.ui = 1024U;
jack_driver_descriptor_add_parameter(desc, &filler, "period", 'p', JackDriverParamUInt, &value, NULL, "Frames per period", NULL);
value.ui = 2U;
jack_driver_descriptor_add_parameter(desc, &filler, "nperiods", 'n', JackDriverParamUInt, &value, NULL, "Number of periods of playback latency", NULL);
value.i = 0;
jack_driver_descriptor_add_parameter(desc, &filler, "hwmon", 'H', JackDriverParamBool, &value, NULL, "Hardware monitoring, if available", NULL);
value.i = 0;
jack_driver_descriptor_add_parameter(desc, &filler, "hwmeter", 'M', JackDriverParamBool, &value, NULL, "Hardware metering, if available", NULL);
value.i = 1;
jack_driver_descriptor_add_parameter(desc, &filler, "duplex", 'D', JackDriverParamBool, &value, NULL, "Provide both capture and playback ports", NULL);
value.i = 0;
jack_driver_descriptor_add_parameter(desc, &filler, "softmode", 's', JackDriverParamBool, &value, NULL, "Soft-mode, no xrun handling", NULL);
value.i = 0;
jack_driver_descriptor_add_parameter(desc, &filler, "monitor", 'm', JackDriverParamBool, &value, NULL, "Provide monitor ports for the output", NULL);
value.c = 'n';
jack_driver_descriptor_add_parameter(
desc,
&filler,
"dither",
'z',
JackDriverParamChar,
&value,
get_dither_constraint(),
"Dithering mode",
"Dithering mode:\n"
" n - none\n"
" r - rectangular\n"
" s - shaped\n"
" t - triangular");
value.i = 0;
jack_driver_descriptor_add_parameter(desc, &filler, "inchannels", 'i', JackDriverParamInt, &value, NULL, "Number of capture channels (defaults to hardware max)", NULL);
jack_driver_descriptor_add_parameter(desc, &filler, "outchannels", 'o', JackDriverParamInt, &value, NULL, "Number of playback channels (defaults to hardware max)", NULL);
value.i = FALSE;
jack_driver_descriptor_add_parameter(desc, &filler, "shorts", 'S', JackDriverParamBool, &value, NULL, "Try 16-bit samples before 32-bit", NULL);
value.ui = 0;
jack_driver_descriptor_add_parameter(desc, &filler, "input-latency", 'I', JackDriverParamUInt, &value, NULL, "Extra input latency (frames)", NULL);
jack_driver_descriptor_add_parameter(desc, &filler, "output-latency", 'O', JackDriverParamUInt, &value, NULL, "Extra output latency (frames)", NULL);
strcpy(value.str, "none");
jack_driver_descriptor_add_parameter(
desc,
&filler,
"midi-driver",
'X',
JackDriverParamString,
&value,
get_midi_driver_constraint(),
"ALSA device name",
"ALSA MIDI driver:\n"
" none - no MIDI driver\n"
" seq - ALSA Sequencer driver\n"
" raw - ALSA RawMIDI driver\n");
return desc;
}
SERVER_EXPORT const jack_driver_desc_t* driver_get_descriptor ()
{
jack_driver_desc_t * desc;
jack_driver_param_desc_t * params;
unsigned int i;
desc = (jack_driver_desc_t*)calloc (1, sizeof (jack_driver_desc_t));
strcpy(desc->name, "alsa"); // size MUST be less then JACK_DRIVER_NAME_MAX + 1
strcpy(desc->desc, "Linux ALSA API based audio backend"); // size MUST be less then JACK_DRIVER_PARAM_DESC + 1
desc->nparams = 18;
params = (jack_driver_param_desc_t*)calloc (desc->nparams, sizeof (jack_driver_param_desc_t));
i = 0;
strcpy (params[i].name, "capture");
params[i].character = 'C';
params[i].type = JackDriverParamString;
strcpy (params[i].value.str, "none");
strcpy (params[i].short_desc,
"Provide capture ports. Optionally set device");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "playback");
params[i].character = 'P';
params[i].type = JackDriverParamString;
strcpy (params[i].value.str, "none");
strcpy (params[i].short_desc,
"Provide playback ports. Optionally set device");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "device");
params[i].character = 'd';
params[i].type = JackDriverParamString;
strcpy (params[i].value.str, "hw:0");
strcpy (params[i].short_desc, "ALSA device name");
strcpy (params[i].long_desc, params[i].short_desc);
params[i].constraint = enum_alsa_devices();
i++;
strcpy (params[i].name, "rate");
params[i].character = 'r';
params[i].type = JackDriverParamUInt;
params[i].value.ui = 48000U;
strcpy (params[i].short_desc, "Sample rate");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "period");
params[i].character = 'p';
params[i].type = JackDriverParamUInt;
params[i].value.ui = 1024U;
strcpy (params[i].short_desc, "Frames per period");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "nperiods");
params[i].character = 'n';
params[i].type = JackDriverParamUInt;
params[i].value.ui = 2U;
strcpy (params[i].short_desc, "Number of periods of playback latency");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "hwmon");
params[i].character = 'H';
params[i].type = JackDriverParamBool;
params[i].value.i = 0;
strcpy (params[i].short_desc, "Hardware monitoring, if available");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "hwmeter");
params[i].character = 'M';
params[i].type = JackDriverParamBool;
params[i].value.i = 0;
strcpy (params[i].short_desc, "Hardware metering, if available");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "duplex");
params[i].character = 'D';
params[i].type = JackDriverParamBool;
params[i].value.i = 1;
strcpy (params[i].short_desc,
"Provide both capture and playback ports");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "softmode");
params[i].character = 's';
params[i].type = JackDriverParamBool;
params[i].value.i = 0;
strcpy (params[i].short_desc, "Soft-mode, no xrun handling");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "monitor");
params[i].character = 'm';
params[i].type = JackDriverParamBool;
params[i].value.i = 0;
strcpy (params[i].short_desc, "Provide monitor ports for the output");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "dither");
params[i].character = 'z';
params[i].type = JackDriverParamChar;
params[i].value.c = 'n';
strcpy (params[i].short_desc, "Dithering mode");
strcpy (params[i].long_desc,
"Dithering mode:\n"
" n - none\n"
" r - rectangular\n"
" s - shaped\n"
" t - triangular");
params[i].constraint = get_dither_constraint();
i++;
strcpy (params[i].name, "inchannels");
params[i].character = 'i';
params[i].type = JackDriverParamUInt;
params[i].value.i = 0;
strcpy (params[i].short_desc,
"Number of capture channels (defaults to hardware max)");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "outchannels");
params[i].character = 'o';
params[i].type = JackDriverParamUInt;
params[i].value.i = 0;
strcpy (params[i].short_desc,
"Number of playback channels (defaults to hardware max)");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "shorts");
params[i].character = 'S';
params[i].type = JackDriverParamBool;
params[i].value.i = FALSE;
strcpy (params[i].short_desc, "Try 16-bit samples before 32-bit");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "input-latency");
params[i].character = 'I';
params[i].type = JackDriverParamUInt;
params[i].value.i = 0;
strcpy (params[i].short_desc, "Extra input latency (frames)");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "output-latency");
params[i].character = 'O';
params[i].type = JackDriverParamUInt;
params[i].value.i = 0;
strcpy (params[i].short_desc, "Extra output latency (frames)");
strcpy (params[i].long_desc, params[i].short_desc);
i++;
strcpy (params[i].name, "midi-driver");
params[i].character = 'X';
params[i].type = JackDriverParamString;
strcpy (params[i].value.str, "none");
strcpy (params[i].short_desc, "ALSA MIDI driver name (seq|raw)");
strcpy (params[i].long_desc,
"ALSA MIDI driver:\n"
" none - no MIDI driver\n"
" seq - ALSA Sequencer driver\n"
" raw - ALSA RawMIDI driver\n");
params[i].constraint = get_midi_driver_constraint();
desc->params = params;
return desc;
}