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-rw-r--r--plugins/eg-sampler.lv2/sampler_ui.c458
1 files changed, 0 insertions, 458 deletions
diff --git a/plugins/eg-sampler.lv2/sampler_ui.c b/plugins/eg-sampler.lv2/sampler_ui.c
deleted file mode 100644
index 769dde0..0000000
--- a/plugins/eg-sampler.lv2/sampler_ui.c
+++ /dev/null
@@ -1,458 +0,0 @@
-// Copyright 2011-2016 David Robillard <d@drobilla.net>
-// SPDX-License-Identifier: ISC
-
-#include "peaks.h"
-#include "uris.h"
-
-#include <lv2/atom/atom.h>
-#include <lv2/atom/forge.h>
-#include <lv2/atom/util.h>
-#include <lv2/core/lv2.h>
-#include <lv2/core/lv2_util.h>
-#include <lv2/log/log.h>
-#include <lv2/log/logger.h>
-#include <lv2/midi/midi.h>
-#include <lv2/ui/ui.h>
-#include <lv2/urid/urid.h>
-
-#include <cairo.h>
-#include <gdk/gdk.h>
-#include <glib-object.h>
-#include <glib.h>
-#include <gobject/gclosure.h>
-#include <gtk/gtk.h>
-
-#include <assert.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define SAMPLER_UI_URI "http://lv2plug.in/plugins/eg-sampler#ui"
-
-#define MIN_CANVAS_W 128
-#define MIN_CANVAS_H 80
-
-typedef struct {
- LV2_Atom_Forge forge;
- LV2_URID_Map* map;
- LV2UI_Request_Value* request_value;
- LV2_Log_Logger logger;
- SamplerURIs uris;
- PeaksReceiver precv;
-
- LV2UI_Write_Function write;
- LV2UI_Controller controller;
-
- GtkWidget* box;
- GtkWidget* play_button;
- GtkWidget* file_button;
- GtkWidget* request_file_button;
- GtkWidget* button_box;
- GtkWidget* canvas;
-
- uint32_t width;
- uint32_t requested_n_peaks;
- char* filename;
-
- uint8_t forge_buf[1024];
-
- // Optional show/hide interface
- GtkWidget* window;
- bool did_init;
-} SamplerUI;
-
-static void
-on_file_set(GtkFileChooserButton* widget, void* handle)
-{
- SamplerUI* ui = (SamplerUI*)handle;
-
- // Get the filename from the file chooser
- char* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
-
- // Write a set message to the plugin to load new file
- lv2_atom_forge_set_buffer(&ui->forge, ui->forge_buf, sizeof(ui->forge_buf));
- LV2_Atom* msg = (LV2_Atom*)write_set_file(
- &ui->forge, &ui->uris, filename, strlen(filename));
-
- assert(msg);
-
- ui->write(ui->controller,
- 0,
- lv2_atom_total_size(msg),
- ui->uris.atom_eventTransfer,
- msg);
-
- g_free(filename);
-}
-
-static void
-on_request_file(GtkButton* widget, void* handle)
-{
- SamplerUI* ui = (SamplerUI*)handle;
-
- ui->request_value->request(
- ui->request_value->handle, ui->uris.eg_sample, 0, NULL);
-}
-
-static void
-on_play_clicked(GtkFileChooserButton* widget, void* handle)
-{
- SamplerUI* ui = (SamplerUI*)handle;
- struct {
- LV2_Atom atom;
- uint8_t msg[3];
- } note_on;
-
- note_on.atom.type = ui->uris.midi_Event;
- note_on.atom.size = 3;
- note_on.msg[0] = LV2_MIDI_MSG_NOTE_ON;
- note_on.msg[1] = 60;
- note_on.msg[2] = 60;
- ui->write(ui->controller,
- 0,
- sizeof(LV2_Atom) + 3,
- ui->uris.atom_eventTransfer,
- &note_on);
-}
-
-static void
-request_peaks(SamplerUI* ui, uint32_t n_peaks)
-{
- if (n_peaks == ui->requested_n_peaks) {
- return;
- }
-
- lv2_atom_forge_set_buffer(&ui->forge, ui->forge_buf, sizeof(ui->forge_buf));
-
- LV2_Atom_Forge_Frame frame;
- lv2_atom_forge_object(&ui->forge, &frame, 0, ui->uris.patch_Get);
- lv2_atom_forge_key(&ui->forge, ui->uris.patch_accept);
- lv2_atom_forge_urid(&ui->forge, ui->precv.uris.peaks_PeakUpdate);
- lv2_atom_forge_key(&ui->forge, ui->precv.uris.peaks_total);
- lv2_atom_forge_int(&ui->forge, n_peaks);
- lv2_atom_forge_pop(&ui->forge, &frame);
-
- LV2_Atom* msg = lv2_atom_forge_deref(&ui->forge, frame.ref);
- ui->write(ui->controller,
- 0,
- lv2_atom_total_size(msg),
- ui->uris.atom_eventTransfer,
- msg);
-
- ui->requested_n_peaks = n_peaks;
-}
-
-/** Set Cairo color to a GDK color (to follow Gtk theme). */
-static void
-cairo_set_source_gdk(cairo_t* cr, const GdkColor* color)
-{
- cairo_set_source_rgb(
- cr, color->red / 65535.0, color->green / 65535.0, color->blue / 65535.0);
-}
-
-static gboolean
-on_canvas_expose(GtkWidget* widget, GdkEventExpose* event, gpointer data)
-{
- SamplerUI* ui = (SamplerUI*)data;
-
- GtkAllocation size;
- gtk_widget_get_allocation(widget, &size);
-
- ui->width = size.width;
- if (ui->width > 2 * ui->requested_n_peaks) {
- request_peaks(ui, 2 * ui->requested_n_peaks);
- }
-
- cairo_t* cr = gdk_cairo_create(gtk_widget_get_window(widget));
-
- cairo_set_line_width(cr, 1.0);
- cairo_translate(cr, 0.5, 0.5);
-
- const double mid_y = size.height / 2.0;
-
- const float* const peaks = ui->precv.peaks;
- const int32_t n_peaks = ui->precv.n_peaks;
- if (peaks) {
- // Draw waveform
- const double scale = size.width / ((double)n_peaks - 1.0f);
-
- // Start at left origin
- cairo_move_to(cr, 0, mid_y);
-
- // Draw line through top peaks
- for (int i = 0; i < n_peaks; ++i) {
- const float peak = peaks[i];
- cairo_line_to(cr, i * scale, mid_y + ((peak / 2.0f) * size.height));
- }
-
- // Continue through bottom peaks
- for (int i = n_peaks - 1; i >= 0; --i) {
- const float peak = peaks[i];
- cairo_line_to(cr, i * scale, mid_y - ((peak / 2.0f) * size.height));
- }
-
- // Close shape
- cairo_line_to(cr, 0, mid_y);
-
- cairo_set_source_gdk(cr, widget->style->mid);
- cairo_fill_preserve(cr);
-
- cairo_set_source_gdk(cr, widget->style->fg);
- cairo_stroke(cr);
- }
-
- cairo_destroy(cr);
- return TRUE;
-}
-
-static void
-destroy_window(SamplerUI* ui)
-{
- if (ui->window) {
- gtk_container_remove(GTK_CONTAINER(ui->window), ui->box);
- gtk_widget_destroy(ui->window);
- ui->window = NULL;
- }
-}
-
-static gboolean
-on_window_closed(GtkWidget* widget, GdkEvent* event, gpointer data)
-{
- SamplerUI* ui = (SamplerUI*)data;
-
- // Remove widget so Gtk doesn't delete it when the window is closed
- gtk_container_remove(GTK_CONTAINER(ui->window), ui->box);
- ui->window = NULL;
-
- return FALSE;
-}
-
-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)
-{
- SamplerUI* ui = (SamplerUI*)calloc(1, sizeof(SamplerUI));
- if (!ui) {
- return NULL;
- }
-
- ui->write = write_function;
- ui->controller = controller;
- ui->width = MIN_CANVAS_W;
- *widget = NULL;
- ui->window = NULL;
- ui->did_init = false;
-
- // Get host features
- // clang-format off
- const char* missing = lv2_features_query(
- features,
- LV2_LOG__log, &ui->logger.log, false,
- LV2_URID__map, &ui->map, true,
- LV2_UI__requestValue, &ui->request_value, false,
- NULL);
- // clang-format on
-
- lv2_log_logger_set_map(&ui->logger, ui->map);
- if (missing) {
- lv2_log_error(&ui->logger, "Missing feature <%s>\n", missing);
- free(ui);
- return NULL;
- }
-
- // Map URIs and initialise forge
- map_sampler_uris(ui->map, &ui->uris);
- lv2_atom_forge_init(&ui->forge, ui->map);
- peaks_receiver_init(&ui->precv, ui->map);
-
- // Construct Gtk UI
- ui->box = gtk_vbox_new(FALSE, 4);
- ui->play_button = gtk_button_new_with_label("▶");
- ui->canvas = gtk_drawing_area_new();
- ui->button_box = gtk_hbox_new(FALSE, 4);
- ui->file_button =
- gtk_file_chooser_button_new("Load Sample", GTK_FILE_CHOOSER_ACTION_OPEN);
- ui->request_file_button = gtk_button_new_with_label("Request Sample");
- gtk_widget_set_size_request(ui->canvas, MIN_CANVAS_W, MIN_CANVAS_H);
- gtk_container_set_border_width(GTK_CONTAINER(ui->box), 4);
- gtk_box_pack_start(GTK_BOX(ui->box), ui->canvas, TRUE, TRUE, 0);
- gtk_box_pack_start(GTK_BOX(ui->box), ui->button_box, FALSE, TRUE, 0);
- gtk_box_pack_start(GTK_BOX(ui->button_box), ui->play_button, FALSE, FALSE, 0);
- gtk_box_pack_start(
- GTK_BOX(ui->button_box), ui->request_file_button, FALSE, FALSE, 0);
- gtk_box_pack_start(GTK_BOX(ui->button_box), ui->file_button, TRUE, TRUE, 0);
-
- g_signal_connect(ui->file_button, "file-set", G_CALLBACK(on_file_set), ui);
-
- g_signal_connect(
- ui->request_file_button, "clicked", G_CALLBACK(on_request_file), ui);
-
- g_signal_connect(ui->play_button, "clicked", G_CALLBACK(on_play_clicked), ui);
-
- g_signal_connect(
- G_OBJECT(ui->canvas), "expose_event", G_CALLBACK(on_canvas_expose), ui);
-
- // Request state (filename) from plugin
- lv2_atom_forge_set_buffer(&ui->forge, ui->forge_buf, sizeof(ui->forge_buf));
- LV2_Atom_Forge_Frame frame;
- LV2_Atom* msg =
- (LV2_Atom*)lv2_atom_forge_object(&ui->forge, &frame, 0, ui->uris.patch_Get);
-
- assert(msg);
-
- lv2_atom_forge_pop(&ui->forge, &frame);
-
- ui->write(ui->controller,
- 0,
- lv2_atom_total_size(msg),
- ui->uris.atom_eventTransfer,
- msg);
-
- *widget = ui->box;
-
- return ui;
-}
-
-static void
-cleanup(LV2UI_Handle handle)
-{
- SamplerUI* ui = (SamplerUI*)handle;
-
- if (ui->window) {
- destroy_window(ui);
- }
-
- gtk_widget_destroy(ui->canvas);
- gtk_widget_destroy(ui->play_button);
- gtk_widget_destroy(ui->file_button);
- gtk_widget_destroy(ui->request_file_button);
- gtk_widget_destroy(ui->button_box);
- gtk_widget_destroy(ui->box);
- free(ui);
-}
-
-static void
-port_event(LV2UI_Handle handle,
- uint32_t port_index,
- uint32_t buffer_size,
- uint32_t format,
- const void* buffer)
-{
- SamplerUI* ui = (SamplerUI*)handle;
- if (format == ui->uris.atom_eventTransfer) {
- const LV2_Atom* atom = (const LV2_Atom*)buffer;
- if (lv2_atom_forge_is_object_type(&ui->forge, atom->type)) {
- const LV2_Atom_Object* obj = (const LV2_Atom_Object*)atom;
- if (obj->body.otype == ui->uris.patch_Set) {
- const char* path = read_set_file(&ui->uris, obj);
- if (path && (!ui->filename || !!strcmp(path, ui->filename))) {
- g_free(ui->filename);
- ui->filename = g_strdup(path);
- gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(ui->file_button),
- path);
- peaks_receiver_clear(&ui->precv);
- ui->requested_n_peaks = 0;
- request_peaks(ui, ui->width / 2 * 2);
- } else if (!path) {
- lv2_log_warning(&ui->logger, "Set message has no path\n");
- }
- } else if (obj->body.otype == ui->precv.uris.peaks_PeakUpdate) {
- if (!peaks_receiver_receive(&ui->precv, obj)) {
- gtk_widget_queue_draw(ui->canvas);
- }
- }
- } else {
- lv2_log_error(&ui->logger, "Unknown message type\n");
- }
- } else {
- lv2_log_warning(&ui->logger, "Unknown port event format\n");
- }
-}
-
-/* Optional non-embedded UI show interface. */
-static int
-ui_show(LV2UI_Handle handle)
-{
- SamplerUI* ui = (SamplerUI*)handle;
-
- if (ui->window) {
- return 0;
- }
-
- if (!ui->did_init) {
- int argc = 0;
- gtk_init_check(&argc, NULL);
- g_object_ref(ui->box);
- ui->did_init = true;
- }
-
- ui->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
- gtk_container_add(GTK_CONTAINER(ui->window), ui->box);
-
- g_signal_connect(
- G_OBJECT(ui->window), "delete-event", G_CALLBACK(on_window_closed), handle);
-
- gtk_widget_show_all(ui->window);
- gtk_window_present(GTK_WINDOW(ui->window));
-
- return 0;
-}
-
-/* Optional non-embedded UI hide interface. */
-static int
-ui_hide(LV2UI_Handle handle)
-{
- SamplerUI* ui = (SamplerUI*)handle;
-
- if (ui->window) {
- destroy_window(ui);
- }
-
- return 0;
-}
-
-/* Idle interface for optional non-embedded UI. */
-static int
-ui_idle(LV2UI_Handle handle)
-{
- const SamplerUI* ui = (const SamplerUI*)handle;
- if (ui->window) {
- gtk_main_iteration_do(false);
- }
- return 0;
-}
-
-static const void*
-extension_data(const char* uri)
-{
- static const LV2UI_Show_Interface show = {ui_show, ui_hide};
- static const LV2UI_Idle_Interface idle = {ui_idle};
-
- if (!strcmp(uri, LV2_UI__showInterface)) {
- return &show;
- }
-
- if (!strcmp(uri, LV2_UI__idleInterface)) {
- return &idle;
- }
-
- return NULL;
-}
-
-static const LV2UI_Descriptor descriptor = {SAMPLER_UI_URI,
- instantiate,
- cleanup,
- port_event,
- extension_data};
-
-LV2_SYMBOL_EXPORT const LV2UI_Descriptor*
-lv2ui_descriptor(uint32_t index)
-{
- return index == 0 ? &descriptor : NULL;
-}
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