diff options
Diffstat (limited to 'hosts/lv2_simple_jack_host.c')
| -rw-r--r-- | hosts/lv2_simple_jack_host.c | 66 |
1 files changed, 42 insertions, 24 deletions
diff --git a/hosts/lv2_simple_jack_host.c b/hosts/lv2_simple_jack_host.c index 5543074..89bc904 100644 --- a/hosts/lv2_simple_jack_host.c +++ b/hosts/lv2_simple_jack_host.c @@ -25,12 +25,16 @@ /** This program's data */ struct JackHost { - jack_client_t* jack_client; /**< Jack client */ - SLV2Plugin plugin; /**< Plugin "class" (actually just a few strings) */ - SLV2Instance instance; /**< Plugin "instance" (loaded shared lib) */ - uint32_t num_ports; /**< Size of the two following arrays: */ - jack_port_t** jack_ports; /**< For audio ports, otherwise NULL */ - float* controls; /**< For control ports, otherwise 0.0f */ + jack_client_t* jack_client; /**< Jack client */ + SLV2World world; /**< SLV2 "world" object */ + SLV2Plugin plugin; /**< Plugin "class" (actually just a few strings) */ + SLV2Instance instance; /**< Plugin "instance" (loaded shared lib) */ + uint32_t num_ports; /**< Size of the two following arrays: */ + jack_port_t** jack_ports; /**< For audio ports, otherwise NULL */ + float* controls; /**< For control ports, otherwise 0.0f */ + SLV2Value input_class; /**< Input port class (URI) */ + SLV2Value control_class; /**< Control port class (URI) */ + SLV2Value audio_class; /**< Audio port class (URI) */ }; @@ -48,11 +52,20 @@ main(int argc, char** argv) host.num_ports = 0; host.jack_ports = NULL; host.controls = NULL; + + /* Set up the port classes this app supports */ + host.input_class = slv2_value_new_uri(host.world, SLV2_PORT_CLASS_INPUT); + host.audio_class = slv2_value_new_uri(host.world, SLV2_PORT_CLASS_OUTPUT); + /* Note that SLV2_PORT_CLASS_* are simply strings defined for convenience. + * host.control_class = slv2_value_new(host.world, SLV2_PORT_CLASS_CONTROL); + * is the same as: */ + host.control_class = slv2_value_new_uri(host.world, + "http://lv2plug.in/ns/lv2core#ControlPort"); /* Find all installed plugins */ - SLV2World world = slv2_world_new(); - slv2_world_load_all(world); - SLV2Plugins plugins = slv2_world_get_all_plugins(world); + host.world = slv2_world_new(); + slv2_world_load_all(host.world); + SLV2Plugins plugins = slv2_world_get_all_plugins(host.world); /* Find the plugin to run */ const char* plugin_uri = (argc == 2) ? argv[1] : NULL; @@ -61,7 +74,7 @@ main(int argc, char** argv) fprintf(stderr, "\nYou must specify a plugin URI to load.\n"); fprintf(stderr, "\nKnown plugins:\n\n"); list_plugins(plugins); - slv2_world_free(world); + slv2_world_free(host.world); return EXIT_FAILURE; } @@ -70,7 +83,7 @@ main(int argc, char** argv) if (!host.plugin) { fprintf(stderr, "Failed to find plugin %s.\n", plugin_uri); - slv2_world_free(world); + slv2_world_free(host.world); return EXIT_FAILURE; } @@ -113,8 +126,8 @@ main(int argc, char** argv) getc(stdin); printf("\n"); - /* Deactivate plugin and JACK */ - slv2_instance_free(host.instance); + /* Deactivate JACK */ + jack_deactivate(host.jack_client); printf("Shutting down JACK.\n"); for (unsigned long i=0; i < host.num_ports; ++i) { @@ -125,7 +138,16 @@ main(int argc, char** argv) } jack_client_close(host.jack_client); - slv2_world_free(world); + /* Deactivate plugin */ + slv2_instance_deactivate(host.instance); + slv2_instance_free(host.instance); + + /* Clean up */ + slv2_value_free(host.input_class); + slv2_value_free(host.audio_class); + slv2_value_free(host.control_class); + slv2_plugins_free(host.world, plugins); + slv2_world_free(host.world); return 0; } @@ -160,28 +182,24 @@ create_port(struct JackHost* host, host->jack_ports[index] = NULL; host->controls[index] = 0.0f; - /* Get the direction of the port (input, output) */ - SLV2PortDirection direction = slv2_port_get_direction(host->plugin, port); - - /* Get the (data) type of the port (control, audio, MIDI, OSC) */ - SLV2PortDataType type = slv2_port_get_data_type(host->plugin, port); - /* Connect control ports to controls array */ - if (type == SLV2_PORT_DATA_TYPE_CONTROL) { + if (slv2_port_is_a(host->plugin, port, host->control_class)) { /* Set default control values for inputs */ - if (direction == SLV2_PORT_DIRECTION_INPUT) { + if (slv2_port_is_a(host->plugin, port, host->input_class)) { host->controls[index] = slv2_port_get_default_value(host->plugin, port); printf("Set %s to %f\n", symbol, host->controls[index]); } slv2_instance_connect_port(host->instance, index, &host->controls[index]); - } else if (type == SLV2_PORT_DATA_TYPE_AUDIO) { + } else if (slv2_port_is_a(host->plugin, port, host->audio_class)) { host->jack_ports[index] = jack_port_register(host->jack_client, symbol, JACK_DEFAULT_AUDIO_TYPE, - (direction == SLV2_PORT_DIRECTION_INPUT) ? JackPortIsInput : JackPortIsOutput, 0); + slv2_port_is_a(host->plugin, port, host->input_class) + ? JackPortIsInput : JackPortIsOutput, + 0); } else { // Simple examples don't have to be robust :) |