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authorDavid Robillard <d@drobilla.net>2009-06-16 17:34:49 +0000
committerDavid Robillard <d@drobilla.net>2009-06-16 17:34:49 +0000
commit762819dcfde67013d8c9ee1f752272abbaf3d82d (patch)
tree295cda30d9c43251c016a839f216cf7c43f2d645 /hosts
parentdcd7a652424b16868763820ca630750c5b2e011f (diff)
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Remove lv2_simple_jack_host (was never useful anyway, just a crippled lv2_jack_host).
git-svn-id: http://svn.drobilla.net/lad/trunk/slv2@2115 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'hosts')
-rw-r--r--hosts/lv2_simple_jack_host.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/hosts/lv2_simple_jack_host.c b/hosts/lv2_simple_jack_host.c
deleted file mode 100644
index 4f0654a..0000000
--- a/hosts/lv2_simple_jack_host.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/* SLV2 Simple Jack Host Example
- * Copyright (C) 2007-2009 Dave Robillard <http://drobilla.net>
- *
- * 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.
- */
-
-#define _XOPEN_SOURCE 500
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <jack/jack.h>
-#include "slv2/slv2.h"
-
-
-/** This program's data */
-struct JackHost {
- 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) */
-};
-
-
-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(SLV2Plugins list);
-
-
-int
-main(int argc, char** argv)
-{
- struct JackHost host;
- host.jack_client = NULL;
- host.num_ports = 0;
- host.jack_ports = NULL;
- host.controls = NULL;
-
- /* Find all installed plugins */
- host.world = slv2_world_new();
- slv2_world_load_all(host.world);
- SLV2Plugins plugins = slv2_world_get_all_plugins(host.world);
-
- /* 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 the plugin to run */
- const char* plugin_uri_str = (argc == 2) ? argv[1] : NULL;
-
- if (!plugin_uri_str) {
- fprintf(stderr, "\nYou must specify a plugin URI to load.\n");
- fprintf(stderr, "\nKnown plugins:\n\n");
- list_plugins(plugins);
- slv2_world_free(host.world);
- return EXIT_FAILURE;
- }
-
- printf("URI:\t%s\n", plugin_uri_str);
- SLV2Value plugin_uri = slv2_value_new_uri(host.world, plugin_uri_str);
- host.plugin = slv2_plugins_get_by_uri(plugins, plugin_uri);
- slv2_value_free(plugin_uri);
-
- if (!host.plugin) {
- fprintf(stderr, "Failed to find plugin %s.\n", plugin_uri_str);
- slv2_world_free(host.world);
- return EXIT_FAILURE;
- }
-
- /* Get the plugin's name */
- SLV2Value name = slv2_plugin_get_name(host.plugin);
- const char* name_str = slv2_value_as_string(name);
- printf("Plugin Name:\t%s\n", slv2_value_as_string(name));
-
- /* Truncate plugin name to suit JACK (if necessary) */
- char* jack_name = NULL;
- if (strlen(name_str) >= (unsigned)jack_client_name_size() - 1) {
- jack_name = calloc(jack_client_name_size(), sizeof(char));
- strncpy(jack_name, name_str, jack_client_name_size() - 1);
- } else {
- jack_name = strdup(name_str);
- }
-
- /* Connect to JACK */
- printf("JACK Name:\t%s\n", jack_name);
- host.jack_client = jack_client_open(jack_name, JackNullOption, NULL);
-
- free(jack_name);
- slv2_value_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.jack_ports = calloc((size_t)host.num_ports, sizeof(jack_port_t*));
- host.controls = calloc((size_t)host.num_ports, sizeof(float*));
-
- 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 JACK */
- jack_deactivate(host.jack_client);
-
- printf("Shutting down JACK.\n");
- for (unsigned long i=0; i < host.num_ports; ++i) {
- if (host.jack_ports[i] != NULL) {
- jack_port_unregister(host.jack_client, host.jack_ports[i]);
- host.jack_ports[i] = NULL;
- }
- }
- 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.audio_class);
- slv2_value_free(host.control_class);
- slv2_plugins_free(host.world, plugins);
- slv2_world_free(host.world);
-
- 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 index)
-{
- SLV2Port port = slv2_plugin_get_port_by_index(host->plugin, index);
-
- /* Get the port symbol (label) for console printing */
- SLV2Value symbol = slv2_port_get_symbol(host->plugin, port);
- const char* symbol_str = slv2_value_as_string(symbol);
-
- /* Initialize the port array elements */
- host->jack_ports[index] = NULL;
- host->controls[index] = 0.0f;
-
- /* Connect control ports to controls array */
- if (slv2_port_is_a(host->plugin, port, host->control_class)) {
-
- /* Set default control values for inputs */
- if (slv2_port_is_a(host->plugin, port, host->input_class)) {
- SLV2Value def;
- slv2_port_get_range(host->plugin, port, &def, NULL, NULL);
- host->controls[index] = slv2_value_as_float(def);
- printf("Set %s to %f\n", symbol_str, host->controls[index]);
- slv2_value_free(def);
- }
-
- slv2_instance_connect_port(host->instance, index, &host->controls[index]);
-
- } else if (slv2_port_is_a(host->plugin, port, host->audio_class)) {
-
- host->jack_ports[index] = jack_port_register(host->jack_client,
- symbol_str, JACK_DEFAULT_AUDIO_TYPE,
- slv2_port_is_a(host->plugin, port, host->input_class)
- ? JackPortIsInput : JackPortIsOutput,
- 0);
-
- } else {
- // Simple examples don't have to be robust :)
- die("ERROR: Unknown port type, aborting messily!\n");
- }
-}
-
-
-/** Jack process callback. */
-int
-jack_process_cb(jack_nframes_t nframes, void* data)
-{
- struct JackHost* host = (struct JackHost*)data;
-
- /* Connect plugin ports directly to JACK buffers */
- for (uint32_t i=0; i < host->num_ports; ++i)
- if (host->jack_ports[i] != NULL)
- slv2_instance_connect_port(host->instance, i,
- jack_port_get_buffer(host->jack_ports[i], nframes));
-
- /* Run plugin for this cycle */
- slv2_instance_run(host->instance, nframes);
-
- return 0;
-}
-
-
-void
-list_plugins(SLV2Plugins list)
-{
- for (unsigned i=0; i < slv2_plugins_size(list); ++i) {
- SLV2Plugin p = slv2_plugins_get_at(list, i);
- printf("%s\n", slv2_value_as_uri(slv2_plugin_get_uri(p)));
- }
-}