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authorDavid Robillard <d@drobilla.net>2008-01-21 15:14:53 +0000
committerDavid Robillard <d@drobilla.net>2008-01-21 15:14:53 +0000
commit0bf92c1f25a854566212e42deafe72ecd2a5f1a1 (patch)
tree7933e54159426aee99a3c6493d9d4852da094baf /hosts/lv2_simple_jack_host.c
parent42aa3c32cdd4c6a0cc1e3372d57ac99511b2f46d (diff)
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Work on generic LV2 events.
git-svn-id: http://svn.drobilla.net/lad/slv2@1090 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'hosts/lv2_simple_jack_host.c')
-rw-r--r--hosts/lv2_simple_jack_host.c66
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 :)