/*
Copyright 2007-2016 David Robillard <http://drobilla.net>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define _POSIX_C_SOURCE 200809L
#define _XOPEN_SOURCE 600
#define _BSD_SOURCE 1
#define _DEFAULT_SOURCE 1
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "jalv_config.h"
#include "jalv_internal.h"
#include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
static int
print_usage(const char* name, bool error)
{
FILE* const os = error ? stderr : stdout;
fprintf(os, "Usage: %s [OPTION...] PLUGIN_URI\n", name);
fprintf(os, "Run an LV2 plugin as a Jack application.\n");
fprintf(os, " -b SIZE Buffer size for plugin <=> UI communication\n");
fprintf(os, " -c SYM=VAL Set control value (e.g. \"vol=1.4\")\n");
fprintf(os, " -d Dump plugin <=> UI communication\n");
fprintf(os, " -h Display this help and exit\n");
fprintf(os, " -l DIR Load state from save directory\n");
fprintf(os, " -n NAME JACK client name\n");
fprintf(os, " -p Print control output changes to stdout\n");
fprintf(os, " -s Show plugin UI if possible\n");
fprintf(os, " -t Print trace messages from plugin\n");
fprintf(os, " -u UUID UUID for Jack session restoration\n");
fprintf(os, " -x Exact JACK client name (exit if taken)\n");
return error ? 1 : 0;
}
int
jalv_ui_resize(Jalv* jalv, int width, int height)
{
return 0;
}
void
jalv_ui_port_event(Jalv* jalv,
uint32_t port_index,
uint32_t buffer_size,
uint32_t protocol,
const void* buffer)
{
}
int
jalv_init(int* argc, char*** argv, JalvOptions* opts)
{
opts->controls = (char**)malloc(sizeof(char*));
opts->controls[0] = NULL;
int n_controls = 0;
int a = 1;
for (; a < *argc && (*argv)[a][0] == '-'; ++a) {
if ((*argv)[a][1] == 'h') {
return print_usage((*argv)[0], true);
} else if ((*argv)[a][1] == 's') {
opts->show_ui = true;
} else if ((*argv)[a][1] == 'p') {
opts->print_controls = true;
} else if ((*argv)[a][1] == 'u') {
if (++a == *argc) {
fprintf(stderr, "Missing argument for -u\n");
return 1;
}
opts->uuid = jalv_strdup((*argv)[a]);
} else if ((*argv)[a][1] == 'l') {
if (++a == *argc) {
fprintf(stderr, "Missing argument for -l\n");
return 1;
}
opts->load = jalv_strdup((*argv)[a]);
} else if ((*argv)[a][1] == 'b') {
if (++a == *argc) {
fprintf(stderr, "Missing argument for -b\n");
return 1;
}
opts->buffer_size = atoi((*argv)[a]);
} else if ((*argv)[a][1] == 'c') {
if (++a == *argc) {
fprintf(stderr, "Missing argument for -c\n");
return 1;
}
opts->controls = (char**)realloc(
opts->controls, (++n_controls + 1) * sizeof(char*));
opts->controls[n_controls - 1] = (*argv)[a];
opts->controls[n_controls] = NULL;
} else if ((*argv)[a][1] == 'i') {
opts->non_interactive = true;
} else if ((*argv)[a][1] == 'd') {
opts->dump = true;
} else if ((*argv)[a][1] == 't') {
opts->trace = true;
} else if ((*argv)[a][1] == 'n') {
if (++a == *argc) {
fprintf(stderr, "Missing argument for -n\n");
return 1;
}
free(opts->name);
opts->name = jalv_strdup((*argv)[a]);
} else if ((*argv)[a][1] == 'x') {
opts->name_exact = 1;
} else {
fprintf(stderr, "Unknown option %s\n", (*argv)[a]);
return print_usage((*argv)[0], true);
}
}
return 0;
}
const char*
jalv_native_ui_type(Jalv* jalv)
{
return NULL;
}
static void
jalv_process_command(Jalv* jalv, const char* cmd)
{
char sym[64];
float value;
if (sscanf(cmd, "%[a-zA-Z0-9] = %f", sym, &value) == 2) {
struct Port* port = NULL;
for (uint32_t i = 0; i < jalv->num_ports; ++i) {
struct Port* p = &jalv->ports[i];
const LilvNode* s = lilv_port_get_symbol(jalv->plugin, p->lilv_port);
if (!strcmp(lilv_node_as_string(s), sym)) {
port = p;
break;
}
}
if (port) {
port->control = value;
printf("%-*s = %f\n", jalv->longest_sym, sym, value);
} else {
fprintf(stderr, "error: no port `%s'\n", sym);
}
}
}
bool
jalv_discover_ui(Jalv* jalv)
{
return jalv->opts.show_ui;
}
int
jalv_open_ui(Jalv* jalv)
{
const LV2UI_Idle_Interface* idle_iface = NULL;
const LV2UI_Show_Interface* show_iface = NULL;
if (jalv->ui && jalv->opts.show_ui) {
jalv_ui_instantiate(jalv, jalv_native_ui_type(jalv), NULL);
idle_iface = (const LV2UI_Idle_Interface*)
suil_instance_extension_data(jalv->ui_instance, LV2_UI__idleInterface);
show_iface = (LV2UI_Show_Interface*)
suil_instance_extension_data(jalv->ui_instance, LV2_UI__showInterface);
}
if (show_iface && idle_iface) {
show_iface->show(suil_instance_get_handle(jalv->ui_instance));
// Drive idle interface until interrupted
while (!zix_sem_try_wait(jalv->done)) {
jalv_update(jalv);
if (idle_iface->idle(suil_instance_get_handle(jalv->ui_instance))) {
break;
}
usleep(33333);
}
show_iface->hide(suil_instance_get_handle(jalv->ui_instance));
} else if (!jalv->opts.non_interactive) {
// Primitive command prompt for setting control values
while (!zix_sem_try_wait(jalv->done)) {
char line[128];
printf("> ");
if (fgets(line, sizeof(line), stdin)) {
jalv_process_command(jalv, line);
} else {
break;
}
}
} else {
zix_sem_wait(jalv->done);
}
// Caller waits on the done sem, so increment it again to exit
zix_sem_post(jalv->done);
return 0;
}
int
jalv_close_ui(Jalv* jalv)
{
zix_sem_post(jalv->done);
return 0;
}