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/* convoLV2 -- LV2 convolution plugin
*
* Copyright 2011-2012 David Robillard <d@drobilla.net>
* Copyright (C) 2012 Robin Gareus <robin@gareus.org>
*
* 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, 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
#include "./uris.h"
typedef struct {
LV2_Atom_Forge forge;
LV2_URID_Map* map;
ConvoLV2URIs uris;
LV2UI_Write_Function write;
LV2UI_Controller controller;
GtkWidget* box;
GtkWidget* btn_load;
GtkWidget* label;
char *filename;
} ConvoLV2UI;
/******************************************************************************
* GUI callbacks
*/
static void
on_load_clicked(GtkWidget* widget,
void* handle)
{
ConvoLV2UI* ui = (ConvoLV2UI*)handle;
/* Create a dialog to select a IR file. */
GtkWidget* dialog = gtk_file_chooser_dialog_new(
"Load IR",
NULL,
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
NULL);
if (ui->filename) {
gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (dialog), ui->filename);
}
/* Run the dialog, and return if it is cancelled. */
if (gtk_dialog_run(GTK_DIALOG(dialog)) != GTK_RESPONSE_ACCEPT) {
gtk_widget_destroy(dialog);
return;
}
if (ui->filename) {
g_free(ui->filename);
}
/* Get the file path from the dialog. */
ui->filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
/* Got what we need, destroy the dialog. */
gtk_widget_destroy(dialog);
#define OBJ_BUF_SIZE 1024
uint8_t obj_buf[OBJ_BUF_SIZE];
lv2_atom_forge_set_buffer(&ui->forge, obj_buf, OBJ_BUF_SIZE);
LV2_Atom* msg = write_set_file(&ui->forge, &ui->uris, ui->filename);
ui->write(ui->controller, 0, lv2_atom_total_size(msg),
ui->uris.atom_eventTransfer,
msg);
}
/******************************************************************************
* GUI
*/
static void clv_gui_setup(ConvoLV2UI* ui) {
ui->box = gtk_vbox_new(FALSE, 4);
ui->label = gtk_label_new("?");
ui->btn_load = gtk_button_new_with_label("Load IR");
gtk_box_pack_start(GTK_BOX(ui->box), ui->label, TRUE, TRUE, 4);
gtk_box_pack_start(GTK_BOX(ui->box), ui->btn_load, FALSE, FALSE, 4);
g_signal_connect(ui->btn_load, "clicked",
G_CALLBACK(on_load_clicked),
ui);
}
/******************************************************************************
* LV2 callbacks
*/
static LV2UI_Handle
instantiate(const LV2UI_Descriptor* descriptor,
const char* plugin_uri,
const char* bundle_path,
LV2UI_Write_Function write_function,
LV2UI_Controller controller,
LV2UI_Widget* widget,
const LV2_Feature* const* features)
{
ConvoLV2UI* ui = (ConvoLV2UI*)malloc(sizeof(ConvoLV2UI));
ui->map = NULL;
ui->write = write_function;
ui->controller = controller;
ui->box = NULL;
ui->btn_load = NULL;
ui->label = NULL;
ui->filename = NULL;
*widget = NULL;
for (int i = 0; features[i]; ++i) {
if (!strcmp(features[i]->URI, LV2_URID_URI "#map")) {
ui->map = (LV2_URID_Map*)features[i]->data;
}
}
if (!ui->map) {
fprintf(stderr, "UI: Host does not support urid:map\n");
free(ui);
return NULL;
}
map_convolv2_uris(ui->map, &ui->uris);
lv2_atom_forge_init(&ui->forge, ui->map);
clv_gui_setup(ui);
*widget = ui->box;
#if 1 //ask plugin about current state
uint8_t obj_buf[OBJ_BUF_SIZE];
lv2_atom_forge_set_buffer(&ui->forge, obj_buf, OBJ_BUF_SIZE);
LV2_Atom_Forge_Frame set_frame;
LV2_Atom* msg = (LV2_Atom*)x_forge_object(
&ui->forge, &set_frame, 1, ui->uris.patch_Get);
lv2_atom_forge_pop(&ui->forge, &set_frame);
ui->write(ui->controller, 0, lv2_atom_total_size(msg),
ui->uris.atom_eventTransfer,
msg);
#endif
return ui;
}
static void
cleanup(LV2UI_Handle handle)
{
ConvoLV2UI* ui = (ConvoLV2UI*)handle;
if (ui->filename) {
g_free(ui->filename);
}
gtk_widget_destroy(ui->btn_load);
free(ui);
}
static void
port_event(LV2UI_Handle handle,
uint32_t port_index,
uint32_t buffer_size,
uint32_t format,
const void* buffer)
{
ConvoLV2UI* ui = (ConvoLV2UI*)handle;
if (format == ui->uris.atom_eventTransfer) {
LV2_Atom* atom = (LV2_Atom*)buffer;
if (atom->type == ui->uris.atom_Blank || atom->type == ui->uris.atom_Object) {
LV2_Atom_Object* obj = (LV2_Atom_Object*)atom;
const LV2_Atom* file_uri = read_set_file(&ui->uris, obj);
if (!file_uri) {
fprintf(stderr, "UI: Unknown message received from UI.\n");
return;
}
const char* uri = (const char*)LV2_ATOM_BODY(file_uri);
gtk_label_set_text(GTK_LABEL(ui->label), uri);
} else {
fprintf(stderr, "UI: Unknown message type.\n");
}
} else {
fprintf(stderr, "UI: Unknown format.\n");
}
}
/******************************************************************************
* LV2 setup
*/
static const void*
extension_data(const char* uri)
{
return NULL;
}
static const LV2UI_Descriptor descriptor = {
CONVOLV2_URI "#ui",
instantiate,
cleanup,
port_event,
extension_data
};
LV2_SYMBOL_EXPORT
const LV2UI_Descriptor*
lv2ui_descriptor(uint32_t index)
{
switch (index) {
case 0:
return &descriptor;
default:
return NULL;
}
}