From d9f35fad0229e5af3c619cdb609f1bd3118d0d18 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sat, 12 Feb 2011 05:50:15 +0000 Subject: Move lv2_jack_host to utils directory. git-svn-id: http://svn.drobilla.net/lad/trunk/slv2@2938 a436a847-0d15-0410-975c-d299462d15a1 --- hosts/lv2_jack_host.c | 368 -------------------------------------------------- 1 file changed, 368 deletions(-) delete mode 100644 hosts/lv2_jack_host.c (limited to 'hosts/lv2_jack_host.c') diff --git a/hosts/lv2_jack_host.c b/hosts/lv2_jack_host.c deleted file mode 100644 index bf5c6a2..0000000 --- a/hosts/lv2_jack_host.c +++ /dev/null @@ -1,368 +0,0 @@ -/* lv2_jack_host - SLV2 Jack Host - * Copyright (C) 2007-2011 David Robillard - * - * 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 -#include -#include -#include -#include - -#include -#include - -#include "lv2/lv2plug.in/ns/ext/event/event-helpers.h" -#include "lv2/lv2plug.in/ns/ext/event/event.h" -#include "lv2/lv2plug.in/ns/ext/uri-map/uri-map.h" - -#include "slv2/slv2.h" - -#include "slv2-config.h" - -#define MIDI_BUFFER_SIZE 1024 - -enum PortType { - CONTROL, - AUDIO, - EVENT -}; - -struct Port { - SLV2Port slv2_port; - enum PortType type; - jack_port_t* jack_port; /**< For audio/MIDI ports, otherwise NULL */ - float control; /**< For control ports, otherwise 0.0f */ - LV2_Event_Buffer* ev_buffer; /**< For MIDI ports, otherwise NULL */ - bool is_input; -}; - -/** 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 */ - 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 event_class; /**< Event port class (URI) */ - SLV2Value midi_class; /**< MIDI event class (URI) */ - SLV2Value optional; /**< lv2:connectionOptional port property */ -}; - -/** URI map feature, for event types (we use only MIDI) */ -#define MIDI_EVENT_ID 1 -uint32_t -uri_to_id(LV2_URI_Map_Callback_Data callback_data, - const char* map, - const char* uri) -{ - /* Note a non-trivial host needs to use an actual dictionary here */ - if (!strcmp(map, LV2_EVENT_URI) && !strcmp(uri, SLV2_EVENT_CLASS_MIDI)) - return MIDI_EVENT_ID; - else - return 0; /* Refuse to map ID */ -} - -#define NS_EXT "http://lv2plug.in/ns/ext/" - -static LV2_URI_Map_Feature uri_map = { NULL, &uri_to_id }; -static const LV2_Feature uri_map_feature = { NS_EXT "uri-map", &uri_map }; - -const LV2_Feature* features[2] = { &uri_map_feature, NULL }; - -/** Abort and exit on error */ -static void -die(const char* msg) -{ - fprintf(stderr, "%s\n", msg); - exit(EXIT_FAILURE); -} - -/** Creates a port and connects the plugin instance to its 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, - float default_value) -{ - struct Port* const port = &host->ports[port_index]; - - port->slv2_port = slv2_plugin_get_port_by_index(host->plugin, port_index); - port->jack_port = NULL; - port->control = 0.0f; - port->ev_buffer = NULL; - - slv2_instance_connect_port(host->instance, port_index, NULL); - - /* Get the port symbol for console printing */ - SLV2Value symbol = slv2_port_get_symbol(host->plugin, port->slv2_port); - const char* symbol_str = slv2_value_as_string(symbol); - - enum JackPortFlags jack_flags = 0; - if (slv2_port_is_a(host->plugin, port->slv2_port, host->input_class)) { - jack_flags = JackPortIsInput; - port->is_input = true; - } else if (slv2_port_is_a(host->plugin, port->slv2_port, host->output_class)) { - jack_flags = JackPortIsOutput; - port->is_input = false; - } else if (slv2_port_has_property(host->plugin, port->slv2_port, host->optional)) { - slv2_instance_connect_port(host->instance, port_index, NULL); - } else { - die("Mandatory port has unknown type (neither input or output)"); - } - - /* Set control values */ - if (slv2_port_is_a(host->plugin, port->slv2_port, host->control_class)) { - port->type = CONTROL; - port->control = isnan(default_value) ? 0.0 : default_value; - printf("%s = %f\n", symbol_str, 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->event_class)) { - port->type = EVENT; - } - - /* Connect the port based on its type */ - switch (port->type) { - case CONTROL: - slv2_instance_connect_port(host->instance, port_index, &port->control); - break; - case AUDIO: - port->jack_port = jack_port_register( - host->jack_client, symbol_str, JACK_DEFAULT_AUDIO_TYPE, jack_flags, 0); - break; - case EVENT: - port->jack_port = jack_port_register( - host->jack_client, symbol_str, JACK_DEFAULT_MIDI_TYPE, jack_flags, 0); - port->ev_buffer = lv2_event_buffer_new(MIDI_BUFFER_SIZE, LV2_EVENT_AUDIO_STAMP); - slv2_instance_connect_port(host->instance, port_index, port->ev_buffer); - break; - default: - // FIXME: check if port connection is optional and die if not - slv2_instance_connect_port(host->instance, port_index, NULL); - fprintf(stderr, "WARNING: Unknown port type, port not connected.\n"); - } -} - -/** Jack process callback. */ -int -jack_process_cb(jack_nframes_t nframes, void* data) -{ - struct JackHost* const host = (struct JackHost*)data; - - /* Prepare port buffers */ - for (uint32_t p = 0; p < host->num_ports; ++p) { - if (!host->ports[p].jack_port) - continue; - - if (host->ports[p].type == AUDIO) { - /* Connect plugin port directly to Jack port buffer. */ - slv2_instance_connect_port( - host->instance, p, - jack_port_get_buffer(host->ports[p].jack_port, nframes)); - - } else if (host->ports[p].type == EVENT) { - /* Clear Jack event port buffer. */ - lv2_event_buffer_reset(host->ports[p].ev_buffer, - LV2_EVENT_AUDIO_STAMP, - (uint8_t*)(host->ports[p].ev_buffer + 1)); - - if (host->ports[p].is_input) { - void* buf = jack_port_get_buffer(host->ports[p].jack_port, - nframes); - - LV2_Event_Iterator iter; - lv2_event_begin(&iter, host->ports[p].ev_buffer); - - for (uint32_t i = 0; i < jack_midi_get_event_count(buf); ++i) { - jack_midi_event_t ev; - jack_midi_event_get(&ev, buf, i); - lv2_event_write(&iter, - ev.time, 0, - MIDI_EVENT_ID, ev.size, ev.buffer); - } - } - } - } - - /* Run plugin for this cycle */ - slv2_instance_run(host->instance, nframes); - - /* Deliver MIDI output */ - for (uint32_t p = 0; p < host->num_ports; ++p) { - if (host->ports[p].jack_port - && !host->ports[p].is_input - && host->ports[p].type == EVENT) { - - void* buf = jack_port_get_buffer(host->ports[p].jack_port, - nframes); - - jack_midi_clear_buffer(buf); - - LV2_Event_Iterator iter; - lv2_event_begin(&iter, host->ports[p].ev_buffer); - - for (uint32_t i = 0; i < iter.buf->event_count; ++i) { - uint8_t* data; - LV2_Event* ev = lv2_event_get(&iter, &data); - jack_midi_event_write(buf, ev->frames, data, ev->size); - lv2_event_increment(&iter); - } - } - } - - return 0; -} - -int -main(int argc, char** argv) -{ - struct JackHost host; - host.jack_client = NULL; - host.num_ports = 0; - host.ports = NULL; - - /* Find all installed plugins */ - 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.event_class = slv2_value_new_uri(world, SLV2_PORT_CLASS_EVENT); - host.midi_class = slv2_value_new_uri(world, SLV2_EVENT_CLASS_MIDI); - host.optional = slv2_value_new_uri(world, SLV2_NAMESPACE_LV2 - "connectionOptional"); - - /* 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, "\nUse lv2_list to list installed plugins.\n"); - slv2_world_free(world); - return EXIT_FAILURE; - } - - printf("Plugin: %s\n", plugin_uri_str); - - SLV2Value plugin_uri = slv2_value_new_uri(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(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); - - /* 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: %s\n\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.\n"); - - /* Instantiate the plugin */ - host.instance = slv2_plugin_instantiate( - host.plugin, jack_get_sample_rate(host.jack_client), features); - if (!host.instance) - die("Failed to instantiate 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)); - float* default_values = calloc(slv2_plugin_get_num_ports(host.plugin), - sizeof(float)); - slv2_plugin_get_port_ranges_float(host.plugin, NULL, NULL, default_values); - - for (uint32_t i = 0; i < host.num_ports; ++i) - create_port(&host, i, default_values[i]); - - free(default_values); - - /* Activate plugin and JACK */ - slv2_instance_activate(host.instance); - jack_activate(host.jack_client); - - /* Run */ - printf("\nPress enter to quit: "); - getc(stdin); - printf("\n"); - - /* Deactivate JACK */ - jack_deactivate(host.jack_client); - - 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].ev_buffer != NULL) { - free(host.ports[i].ev_buffer); - } - } - jack_client_close(host.jack_client); - - /* Deactivate plugin */ - slv2_instance_deactivate(host.instance); - slv2_instance_free(host.instance); - - /* Clean up */ - free(host.ports); - 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.event_class); - slv2_value_free(host.midi_class); - slv2_value_free(host.optional); - slv2_plugins_free(world, plugins); - slv2_world_free(world); - - return 0; -} -- cgit v1.2.1