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-rw-r--r--examples/hosts/host.c341
1 files changed, 0 insertions, 341 deletions
diff --git a/examples/hosts/host.c b/examples/hosts/host.c
deleted file mode 100644
index 97937a8..0000000
--- a/examples/hosts/host.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/* LibSLV2 Jack Example Host
- * Copyright (C) 2006 Dave Robillard <drobilla@connect.carleton.ca>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <slv2/slv2.h>
-#include <jack/jack.h>
-
-#define WITH_MIDI 1
-#define MIDI_BUFFER_SIZE 1024
-
-#ifdef WITH_MIDI
-#include <jack/midiport.h>
-#include "lv2-miditype.h"
-#include "lv2-midifunctions.h"
-#endif // WITH_MIDI
-
-struct Port {
- enum Direction { INPUT, OUTPUT} direction;
- enum Type { UNKNOWN, FLOAT, MIDI } 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 */
-};
-
-
-void die(const char* msg);
-void create_port(struct JackHost* host, uint32_t port_index);
-int jack_process_cb(jack_nframes_t nframes, void* data);
-void list_plugins(SLV2List list);
-
-
-int
-main(int argc, char** argv)
-{
- struct JackHost host;
- host.jack_client = NULL;
- host.num_ports = 0;
- host.ports = NULL;
-
- /* Find all installed plugins */
- SLV2List plugins = slv2_list_new();
- slv2_list_load_all(plugins);
- //slv2_list_load_bundle(plugins, "http://www.scs.carleton.ca/~drobilla/files/Amp-swh.lv2");
-
- /* Find the plugin to run */
- const char* plugin_uri = (argc == 2) ? argv[1] : NULL;
-
- if (!plugin_uri) {
- fprintf(stderr, "\nYou must specify a plugin URI to load.\n");
- fprintf(stderr, "\nKnown plugins:\n\n");
- list_plugins(plugins);
- return EXIT_FAILURE;
- }
-
- printf("URI:\t%s\n", plugin_uri);
- host.plugin = slv2_list_get_plugin_by_uri(plugins, plugin_uri);
-
- if (!host.plugin) {
- fprintf(stderr, "Failed to find plugin %s.\n", plugin_uri);
- slv2_list_free(plugins);
- return EXIT_FAILURE;
- }
-
- /* Get the plugin's name */
- char* name = slv2_plugin_get_name(host.plugin);
- printf("Name:\t%s\n", name);
-
- /* Connect to JACK (with plugin name as client name) */
- host.jack_client = jack_client_open(name, JackNullOption, NULL);
- free(name);
- if (!host.jack_client)
- die("Failed to connect to JACK.");
- else
- printf("Connected to JACK.\n");
-
- /* Instantiate the plugin */
- host.instance = slv2_plugin_instantiate(
- host.plugin, jack_get_sample_rate(host.jack_client), NULL);
- if (!host.instance)
- die("Failed to instantiate plugin.\n");
- else
- printf("Succesfully instantiated plugin.\n");
-
- 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.ports = calloc((size_t)host.num_ports, sizeof(struct Port));
-
- for (uint32_t i=0; i < host.num_ports; ++i)
- create_port(&host, i);
-
- /* Activate plugin and JACK */
- slv2_instance_activate(host.instance);
- jack_activate(host.jack_client);
-
- /* Run */
- printf("Press enter to quit: ");
- getc(stdin);
- printf("\n");
-
- /* Deactivate plugin and JACK */
- slv2_instance_free(host.instance);
- slv2_list_free(plugins);
-
- printf("Shutting down JACK.\n");
- for (unsigned long i=0; i < host.num_ports; ++i) {
- if (host.ports[i].jack_port != NULL) {
- jack_port_unregister(host.jack_client, host.ports[i].jack_port);
- host.ports[i].jack_port = NULL;
- }
- if (host.ports[i].midi_buffer != NULL) {
- lv2midi_free(host.ports[i].midi_buffer);
- }
- }
- jack_client_close(host.jack_client);
-
- return 0;
-}
-
-
-/** Abort and exit on error */
-void
-die(const char* msg)
-{
- fprintf(stderr, "%s\n", msg);
- exit(EXIT_FAILURE);
-}
-
-
-/** Creates a port and connects the plugin instance to it's data location.
- *
- * For audio ports, creates a jack port and connects plugin port to buffer.
- *
- * For control ports, sets controls array to default value and connects plugin
- * port to that element.
- */
-void
-create_port(struct JackHost* host,
- uint32_t port_index)
-{
- //struct Port* port = (Port*)malloc(sizeof(Port));
- struct Port* const port = &host->ports[port_index];
-
- port->type = UNKNOWN;
- port->jack_port = NULL;
- port->control = 0.0f;
- port->midi_buffer = NULL;
-
- slv2_instance_connect_port(host->instance, port_index, NULL);
-
- char* type_str = slv2_port_get_data_type(host->plugin, port_index);
- if (!strcmp(type_str, SLV2_DATA_TYPE_FLOAT))
- port->type = FLOAT;
- else if (!strcmp(type_str, SLV2_DATA_TYPE_MIDI))
- port->type = MIDI;
-
- /* Get the port symbol (label) for console printing */
- char* symbol = slv2_port_get_symbol(host->plugin, port_index);
-
- /* Get the 'class' (not data type) of the port (control input, audio output, etc) */
- enum SLV2PortClass class = slv2_port_get_class(host->plugin, port_index);
-
- if (port->type == FLOAT) {
-
- /* Connect the port based on it's 'class' */
- switch (class) {
- case SLV2_CONTROL_RATE_INPUT:
- port->direction = INPUT;
- port->control = slv2_port_get_default_value(host->plugin, port_index);
- slv2_instance_connect_port(host->instance, port_index, &port->control);
- printf("Set %s to %f\n", symbol, host->ports[port_index].control);
- break;
- case SLV2_CONTROL_RATE_OUTPUT:
- port->direction = OUTPUT;
- slv2_instance_connect_port(host->instance, port_index, &port->control);
- break;
- case SLV2_AUDIO_RATE_INPUT:
- printf("AI!\n");
- port->direction = INPUT;
- port->jack_port = jack_port_register(host->jack_client,
- symbol, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
- break;
- case SLV2_AUDIO_RATE_OUTPUT:
- printf("AO!\n");
- port->direction = OUTPUT;
- port->jack_port = jack_port_register(host->jack_client,
- symbol, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
- break;
- default:
- fprintf(stderr, "ERROR: Unknown port class\n");
- }
-
- } else if (port->type == MIDI) {
-
- printf("MIDI! %s\n", symbol);
- if (class == SLV2_CONTROL_RATE_INPUT) {
- port->direction = INPUT;
- port->jack_port = jack_port_register(host->jack_client,
- symbol, JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0);
- port->midi_buffer = lv2midi_new(MIDI_BUFFER_SIZE);
- slv2_instance_connect_port(host->instance, port_index, port->midi_buffer);
- } else if (class == SLV2_CONTROL_RATE_OUTPUT) {
- port->direction = OUTPUT;
- port->jack_port = jack_port_register(host->jack_client,
- symbol, JACK_DEFAULT_MIDI_TYPE, JackPortIsOutput, 0);
- port->midi_buffer = lv2midi_new(MIDI_BUFFER_SIZE);
- slv2_instance_connect_port(host->instance, port_index, port->midi_buffer);
- } else {
- fprintf(stderr, "ERROR: Audio rate MIDI port?? Ignoring.\n");
- }
-
- } else {
-
- fprintf(stderr, "Unrecognized data type %s for port %s, ignored.\n",
- type_str, symbol);
- fprintf(stderr, " %s\n",
- SLV2_DATA_TYPE_MIDI);
-
- }
-
- free(symbol);
- free(type_str);
-}
-
-
-/** Jack process callback. */
-int
-jack_process_cb(jack_nframes_t nframes, void* data)
-{
- struct JackHost* const host = (struct JackHost*)data;
-
- /* Connect inputs */
- for (uint32_t p=0; p < host->num_ports; ++p) {
- if (!host->ports[p].jack_port)
- continue;
-
- if (host->ports[p].type == FLOAT) {
- slv2_instance_connect_port(host->instance, p,
- jack_port_get_buffer(host->ports[p].jack_port, nframes));
- } else if (host->ports[p].type == MIDI) {
-
- void* jack_buffer = jack_port_get_buffer(host->ports[p].jack_port, nframes);
-
- LV2_MIDIState state;
- lv2midi_reset_state(&state, host->ports[p].midi_buffer, nframes);
- lv2midi_reset_buffer(state.midi);
-
- if (host->ports[p].direction == INPUT) {
- jack_midi_event_t ev;
-
- const jack_nframes_t event_count
- = jack_midi_get_event_count(jack_buffer, nframes);
-
- for (jack_nframes_t e=0; e < event_count; ++e) {
-
- jack_midi_event_get(&ev, jack_buffer, e, nframes);
-
- state.midi = host->ports[p].midi_buffer;
- lv2midi_put_event(&state, (double)ev.time, ev.size, ev.buffer);
- }
- }
- }
- }
-
-
- /* Run plugin for this cycle */
- slv2_instance_run(host->instance, nframes);
-
-
- /* Deliver output */
- for (uint32_t p=0; p < host->num_ports; ++p) {
- if (host->ports[p].jack_port
- && host->ports[p].type == MIDI
- && host->ports[p].direction == OUTPUT) {
-
- void* jack_buffer = jack_port_get_buffer(host->ports[p].jack_port, nframes);
-
- jack_midi_clear_buffer(jack_buffer, nframes);
-
- LV2_MIDIState state;
- lv2midi_reset_state(&state, host->ports[p].midi_buffer, nframes);
-
- double timestamp = 0.0f;
- uint32_t size = 0;
- unsigned char* data = NULL;
-
- const uint32_t event_count = state.midi->event_count;
-
- for (uint32_t i=0; i < event_count; ++i) {
- lv2midi_get_event(&state, &timestamp, &size, &data);
-
- jack_midi_event_write(jack_buffer,
- (jack_nframes_t)timestamp, data, size, nframes);
-
- lv2midi_increment(&state);
- }
-
- }
- }
-
- return 0;
-}
-
-
-void
-list_plugins(SLV2List list)
-{
- for (size_t i=0; i < slv2_list_get_length(list); ++i) {
- const SLV2Plugin* const p = slv2_list_get_plugin_by_index(list, i);
- printf("%s\n", slv2_plugin_get_uri(p));
- }
-}
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