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ui.c
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#include <stdio.h>
#include <SDL2/SDL.h>
#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
#include "lv2/lv2plug.in/ns/ext/atom/forge.h"
#include "lv2/lv2plug.in/ns/ext/atom/util.h"
#include "lv2/lv2plug.in/ns/ext/patch/patch.h"
#include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
#include <SDL2/SDL_syswm.h>
#include <xcb/xcb.h>
#define SDLMETER_UI_URI "http://m4l3z.abod.co/plugin/sdlmeter#ui"
#define SDLMETER_URI "http://m4l3z.abod.co/plugin/sdlmeter"
// Drawing area size
#define DAWIDTH (640)
#define DAHEIGHT (480)
const char* WINDOW_TITLE = "SDL Meter ";
typedef struct {
LV2UI_Write_Function write;
LV2UI_Controller controller;
LV2UI_Widget* twidget;
SDL_Surface *sdlscreen;
SDL_Surface *meter;
SDL_Window* window;
xcb_connection_t *conn;
xcb_screen_t *screen;
xcb_drawable_t win;
xcb_drawable_t widget;
void* parentXwindow;
int done;
}sdlmeterUI;
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)
{
sdlmeterUI* ui = (sdlmeterUI*)malloc(sizeof(sdlmeterUI));
ui->write = write_function;
ui->controller = controller;
ui->screen = NULL;
ui->meter = NULL;
ui->twidget = widget;
LV2UI_Resize *host_resize = NULL;
ui->parentXwindow = 0;
if (strcmp(plugin_uri, SDLMETER_URI) != 0) {
printf(stderr, "Error: this GUI does not support plugin with URI %s\n", plugin_uri);
return NULL;
}
for(int i =0; features[i]; i++)
{
if(!strcmp(features[i]->URI, LV2_UI__parent))
{
ui->parentXwindow = features[i]->data;
printf("Found parent window : %i", ui->parentXwindow);
}
else if(!strcmp(features[i]->URI, LV2_UI__resize))
host_resize = features[i]->data;
}
if(!ui->parentXwindow)
{
free(ui);
return NULL;
}
/*
ui->conn = xcb_connect(NULL, NULL);
ui->screen = xcb_setup_roots_iterator(xcb_get_setup(ui->conn)).data;
ui->win = (uintptr_t)parentXwindow;
ui->widget = xcb_generate_id(ui->conn);
const uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
const uint32_t values [2] = {
ui->screen->black_pixel,
XCB_EVENT_MASK_EXPOSURE
};
xcb_create_window(ui->conn, XCB_COPY_FROM_PARENT, ui->widget, ui->win,
0, 0, 1280, 100, 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT, ui->screen->root_visual, mask, values);
xcb_map_window(ui->conn, ui->widget);
xcb_flush(ui->conn);
*/
char winhack[100];
sprintf(winhack, "SDL_WINDOWID=%ld", ui->parentXwindow);
putenv(winhack);
ui->window = SDL_CreateWindow("test", 0, 0, 640, 480, NULL);
ui->sdlscreen= SDL_CreateRGBSurface(0, 640, 480, 32,
0, 0, 0, 0);
SDL_FillRect(ui->sdlscreen, NULL, SDL_MapRGB(ui->sdlscreen->format, 255, 0, 0));
SDL_BlitSurface(ui->sdlscreen, 0, SDL_GetWindowSurface(ui->window),0);
SDL_UpdateWindowSurface(ui->window );
//SDL_ShowWindow(ui->window);
*(uintptr_t *)widget = (uintptr_t)ui->widget;
if(host_resize)
host_resize->ui_resize(host_resize->handle, 640, 480);
return (LV2UI_Handle) ui;
}
static void cleanup(LV2UI_Handle handle)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
SDL_Quit();
free(ui);
}
static int ui_show(LV2UI_Handle handle)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
// SDL_Surface* screen = SDL_SetVideoMode( WINDOW_WIDTH, WINDOW_HEIGHT, 0,SDL_HWSURFACE | SDL_DOUBLEBUF );
/*
SDL_Init(SDL_INIT_VIDEO);
SDL_WM_SetCaption( WINDOW_TITLE, 0 );
SDL_FillRect(ui->screen, NULL, SDL_MapRGB(ui->screen->format, 255, 0, 0));
SDL_Flip(ui->screen);
SDL_UpdateRect(ui->screen ,0 ,0 ,0 ,0);
*/
//SDL_Init(SDL_INIT_VIDEO);
//SDL_Surface* screen = SDL_SetVideoMode( WINDOW_WIDTH, WINDOW_HEIGHT, 0,SDL_HWSURFACE | SDL_DOUBLEBUF );
//SDL_Window* window =SDL_CreateWindowFrom((const void *) ui->widget);
//ui->screen= SDL_GetWindowSurface( ui->window );
//SDL_FillRect(ui->screen, NULL, SDL_MapRGB(ui->screen->format, 255, 0, 0));
//SDL_UpdateWindowSurface( ui->window );
//ui->widget = SDL_GetWindowID(window);
SDL_SetHint(SDL_HINT_VIDEO_WINDOW_SHARE_PIXEL_FORMAT, "1");
ui->window = SDL_CreateWindowFrom(ui->parentXwindow);
if(!ui->window) {printf("\n couldnt create sdl window");}
ui->sdlscreen = SDL_CreateRGBSurface(0, 640, 480, 32, 0, 0, 0, 0);
SDL_BlitSurface(ui->sdlscreen, 0, SDL_GetWindowSurface(ui->window),0);
if(!SDL_UpdateWindowSurface(ui->window)) {printf("\n couldnt update ui");}
return 0;
}
static int ui_hide(LV2UI_Handle handle)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
SDL_Quit();
return 0;
}
static void send_ui_state(LV2UI_Handle handle)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
}
static void send_ui_disable(LV2UI_Handle handle)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
}
static void send_ui_enable(LV2UI_Handle handle)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
}
static void port_event(LV2UI_Handle handle, uint32_t port_index, uint32_t buffer_size, uint32_t format, const void* buffer)
{
sdlmeterUI* ui = (sdlmeterUI*)handle;
}
static const void*
extension_data(const char* uri)
{
return NULL;
}
static const LV2UI_Descriptor descriptor = {
SDLMETER_UI_URI,
instantiate,
cleanup,
port_event,
extension_data,
NULL
};
LV2_SYMBOL_EXPORT const LV2UI_Descriptor* lv2ui_descriptor(uint32_t index)
{
switch (index) {
case 0:
return &descriptor;
default:
return NULL;
}
}