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Diffstat (limited to 'hosts/lv2_jack_host.c')
-rw-r--r--hosts/lv2_jack_host.c117
1 files changed, 72 insertions, 45 deletions
diff --git a/hosts/lv2_jack_host.c b/hosts/lv2_jack_host.c
index a92cb62..96d18cb 100644
--- a/hosts/lv2_jack_host.c
+++ b/hosts/lv2_jack_host.c
@@ -30,23 +30,39 @@
#define MIDI_BUFFER_SIZE 1024
+enum PortDirection {
+ INPUT,
+ OUTPUT
+};
+
+enum PortType {
+ CONTROL,
+ AUDIO,
+ MIDI
+};
+
struct Port {
- SLV2PortDirection direction;
- SLV2PortDataType type;
- SLV2Port slv2_port;
- jack_port_t* jack_port; /**< For audio and MIDI ports, otherwise NULL */
- float control; /**< For control ports, otherwise 0.0f */
- LV2_MIDI* midi_buffer; /**< For midi ports, otherwise NULL */
+ SLV2Port slv2_port;
+ enum PortDirection direction;
+ enum PortType type;
+ jack_port_t* jack_port; /**< For audio and MIDI ports, otherwise NULL */
+ float control; /**< For control ports, otherwise 0.0f */
+ LV2_MIDI* midi_buffer; /**< For midi ports, otherwise NULL */
};
/** 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: */
- struct Port* ports; /** Port array of size num_ports */
+ 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: */
+ struct Port* ports; /** Port array of size num_ports */
+ SLV2Value input_class; /**< Input port class (URI) */
+ SLV2Value output_class; /**< Output port class (URI) */
+ SLV2Value control_class; /**< Control port class (URI) */
+ SLV2Value audio_class; /**< Audio port class (URI) */
+ SLV2Value midi_class; /**< MIDI port class (URI) */
};
@@ -68,6 +84,13 @@ main(int argc, char** argv)
SLV2World world = slv2_world_new();
slv2_world_load_all(world);
SLV2Plugins plugins = slv2_world_get_all_plugins(world);
+
+ /* Set up the port classes this app supports */
+ host.input_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_INPUT);
+ host.output_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_OUTPUT);
+ host.control_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_CONTROL);
+ host.audio_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_AUDIO);
+ host.midi_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_MIDI);
/* Find the plugin to run */
const char* plugin_uri = (argc == 2) ? argv[1] : NULL;
@@ -112,7 +135,7 @@ main(int argc, char** argv)
jack_set_process_callback(host.jack_client, &jack_process_cb, (void*)(&host));
/* Create ports */
- host.num_ports = slv2_plugin_get_num_ports(host.plugin);
+ host.num_ports = slv2_plugin_get_num_ports(host.plugin);
host.ports = calloc((size_t)host.num_ports, sizeof(struct Port));
for (uint32_t i=0; i < host.num_ports; ++i)
@@ -127,9 +150,8 @@ main(int argc, char** argv)
getc(stdin);
printf("\n");
- /* Deactivate plugin and JACK */
- slv2_instance_free(host.instance);
- slv2_plugins_free(world, plugins);
+ /* Deactivate JACK */
+ jack_deactivate(host.jack_client);
printf("Shutting down JACK.\n");
for (unsigned long i=0; i < host.num_ports; ++i) {
@@ -143,6 +165,16 @@ main(int argc, char** argv)
}
jack_client_close(host.jack_client);
+ /* Deactivate plugin */
+ slv2_instance_deactivate(host.instance);
+ slv2_instance_free(host.instance);
+
+ /* Clean up */
+ slv2_value_free(host.input_class);
+ slv2_value_free(host.output_class);
+ slv2_value_free(host.control_class);
+ slv2_value_free(host.audio_class);
+ slv2_value_free(host.midi_class);
slv2_plugins_free(world, plugins);
slv2_world_free(world);
@@ -172,8 +204,6 @@ create_port(struct JackHost* host,
{
struct Port* const port = &host->ports[port_index];
- port->direction = SLV2_PORT_DIRECTION_UNKNOWN;
- port->type = SLV2_PORT_DATA_TYPE_UNKNOWN;
port->slv2_port = slv2_plugin_get_port_by_index(host->plugin, port_index);
port->jack_port = NULL;
port->control = 0.0f;
@@ -184,43 +214,40 @@ create_port(struct JackHost* host,
/* Get the port symbol (label) for console printing */
char* symbol = slv2_port_get_symbol(host->plugin, port->slv2_port);
- /* Get the direction of the port (input, output) */
- port->direction = slv2_port_get_direction(host->plugin, port->slv2_port);
-
- /* Get the (data) type of the port (control, audio, MIDI, OSC) */
- port->type = slv2_port_get_data_type(host->plugin, port->slv2_port);
-
- if (port->type == SLV2_PORT_DATA_TYPE_CONTROL)
- port->control = slv2_port_get_default_value(host->plugin, port->slv2_port);
-
enum JackPortFlags jack_flags = 0;
- switch (port->direction) {
- case SLV2_PORT_DIRECTION_INPUT:
- jack_flags = JackPortIsInput; break;
- case SLV2_PORT_DIRECTION_OUTPUT:
- jack_flags = JackPortIsOutput; break;
- default:
- // FIXME: check if port connection is is optional and die if not
- slv2_instance_connect_port(host->instance, port_index, NULL);
- return;
+ if (slv2_port_is_a(host->plugin, port->slv2_port, host->input_class)) {
+ jack_flags = JackPortIsInput;
+ port->direction = INPUT;
+ } else if (slv2_port_is_a(host->plugin, port->slv2_port, host->output_class)) {
+ jack_flags = JackPortIsOutput;
+ port->direction = OUTPUT;
+ } else if (slv2_port_has_property(host->plugin, port->slv2_port, SLV2_NAMESPACE_LV2 "connectionOptional")) {
+ slv2_instance_connect_port(host->instance, port_index, NULL);
+ } else {
+ die("Mandatory port has unknown type (neither input or output)");
}
-
+
/* Set control values */
- if (port->direction == SLV2_PORT_DIRECTION_INPUT && port->type == SLV2_PORT_DATA_TYPE_CONTROL) {
+ if (slv2_port_is_a(host->plugin, port->slv2_port, host->control_class)) {
+ port->type = CONTROL;
port->control = slv2_port_get_default_value(host->plugin, port->slv2_port);
printf("Set %s to %f\n", symbol, host->ports[port_index].control);
+ } else if (slv2_port_is_a(host->plugin, port->slv2_port, host->audio_class)) {
+ port->type = AUDIO;
+ } else if (slv2_port_is_a(host->plugin, port->slv2_port, host->midi_class)) {
+ port->type = MIDI;
}
/* Connect the port based on it's type */
switch (port->type) {
- case SLV2_PORT_DATA_TYPE_CONTROL:
+ case CONTROL:
slv2_instance_connect_port(host->instance, port_index, &port->control);
break;
- case SLV2_PORT_DATA_TYPE_AUDIO:
+ case AUDIO:
port->jack_port = jack_port_register(host->jack_client,
symbol, JACK_DEFAULT_AUDIO_TYPE, jack_flags, 0);
break;
- case SLV2_PORT_DATA_TYPE_MIDI:
+ case MIDI:
port->jack_port = jack_port_register(host->jack_client,
symbol, JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0);
port->midi_buffer = lv2midi_new(MIDI_BUFFER_SIZE);
@@ -247,16 +274,16 @@ jack_process_cb(jack_nframes_t nframes, void* data)
if (!host->ports[p].jack_port)
continue;
- if (host->ports[p].type == SLV2_PORT_DATA_TYPE_AUDIO) {
+ if (host->ports[p].type == AUDIO) {
slv2_instance_connect_port(host->instance, p,
jack_port_get_buffer(host->ports[p].jack_port, nframes));
- } else if (host->ports[p].type == SLV2_PORT_DATA_TYPE_MIDI) {
+ } else if (host->ports[p].type == MIDI) {
lv2midi_reset_buffer(host->ports[p].midi_buffer);
- if (host->ports[p].direction == SLV2_PORT_DIRECTION_INPUT) {
+ if (host->ports[p].direction == INPUT) {
void* jack_buffer = jack_port_get_buffer(host->ports[p].jack_port, nframes);
lv2midi_reset_buffer(host->ports[p].midi_buffer);
@@ -286,8 +313,8 @@ jack_process_cb(jack_nframes_t nframes, void* data)
/* Deliver output */
for (uint32_t p=0; p < host->num_ports; ++p) {
if (host->ports[p].jack_port
- && host->ports[p].direction == SLV2_PORT_DIRECTION_OUTPUT
- && host->ports[p].type == SLV2_PORT_DATA_TYPE_MIDI) {
+ && host->ports[p].direction == INPUT
+ && host->ports[p].type == MIDI) {
void* jack_buffer = jack_port_get_buffer(host->ports[p].jack_port, nframes);
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-20 06:10:24 +0000