linux/gp2x.c

   1 /* faking/emulating gp2x.c by using gtk */
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <pthread.h>
   6 #include <semaphore.h>
   7 #include <gtk/gtk.h>
   8
   9 #include <unistd.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12 #include <fcntl.h>
  13 #include <errno.h>
  14
  15 #include "../gp2x/emu.h"
  16 #include "../gp2x/gp2x.h"
  17 #include "../gp2x/version.h"
  18 #include "../common/emu.h"
  19 #include "sndout_oss.h"
  20
  21 #include "log_io.h"
  22
  23 unsigned long current_keys = 0;
  24 static int current_bpp = 8;
  25 static int current_pal[256];
  26 static const char *verstring = "PicoDrive " VERSION;
  27 static int scr_changed = 0, scr_w = SCREEN_WIDTH, scr_h = SCREEN_HEIGHT;
  28
  29 // dummies
  30 char *ext_menu = 0, *ext_state = 0;
  31 int mix_32_to_16l_level;
  32
  33 /* gtk */
  34 struct gtk_global_struct
  35 {
  36         GtkWidget *window;
  37         GtkWidget *pixmap1;
  38 } gtk_items;
  39
  40
  41 static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data)
  42 {
  43         return FALSE;
  44 }
  45
  46 static void destroy (GtkWidget *widget, gpointer data)
  47 {
  48         gtk_main_quit ();
  49 }
  50
  51 static gint key_press_event (GtkWidget *widget, GdkEventKey *event)
  52 {
  53         switch (event->hardware_keycode)
  54         {
  55                 case 111:
  56                 case 0x62: current_keys |= GP2X_UP;    break;
  57                 case 116:
  58                 case 0x68: current_keys |= GP2X_DOWN;  break;
  59                 case 113:
  60                 case 0x64: current_keys |= GP2X_LEFT;  break;
  61                 case 114:
  62                 case 0x66: current_keys |= GP2X_RIGHT; break;
  63                 case 0x24: current_keys |= GP2X_START; break; // enter
  64                 case 0x23: current_keys |= GP2X_SELECT;break; // ]
  65                 case 0x34: current_keys |= GP2X_A;     break; // z
  66                 case 0x35: current_keys |= GP2X_X;     break; // x
  67                 case 0x36: current_keys |= GP2X_B;     break; // c
  68                 case 0x37: current_keys |= GP2X_Y;     break; // v
  69                 case 0x27: current_keys |= GP2X_L;     break; // s
  70                 case 0x28: current_keys |= GP2X_R;     break; // d
  71                 case 0x29: current_keys |= GP2X_PUSH;  break; // f
  72                 case 0x18: current_keys |= GP2X_VOL_DOWN;break; // q
  73                 case 0x19: current_keys |= GP2X_VOL_UP;break; // w
  74                 case 0x2d: log_io_clear(); break; // k
  75                 case 0x2e: log_io_dump();  break; // l
  76                 case 0x17: { // tab
  77                         extern int PicoReset(void);
  78                         PicoReset();
  79                         break;
  80                 }
  81         }
  82
  83         return 0;
  84 }
  85
  86 static gint key_release_event (GtkWidget *widget, GdkEventKey *event)
  87 {
  88         switch (event->hardware_keycode)
  89         {
  90                 case 111:
  91                 case 0x62: current_keys &= ~GP2X_UP;    break;
  92                 case 116:
  93                 case 0x68: current_keys &= ~GP2X_DOWN;  break;
  94                 case 113:
  95                 case 0x64: current_keys &= ~GP2X_LEFT;  break;
  96                 case 114:
  97                 case 0x66: current_keys &= ~GP2X_RIGHT; break;
  98                 case 0x24: current_keys &= ~GP2X_START; break; // enter
  99                 case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
 100                 case 0x34: current_keys &= ~GP2X_A;     break; // z
 101                 case 0x35: current_keys &= ~GP2X_X;     break; // x
 102                 case 0x36: current_keys &= ~GP2X_B;     break; // c
 103                 case 0x37: current_keys &= ~GP2X_Y;     break; // v
 104                 case 0x27: current_keys &= ~GP2X_L;     break; // s
 105                 case 0x28: current_keys &= ~GP2X_R;     break; // d
 106                 case 0x29: current_keys &= ~GP2X_PUSH;  break; // f
 107                 case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
 108                 case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
 109         }
 110
 111         return 0;
 112 }
 113
 114 static void size_allocate_event(GtkWidget *widget, GtkAllocation *allocation, gpointer user_data)
 115 {
 116         // printf("%dx%d\n", allocation->width, allocation->height);
 117         if (scr_w != allocation->width - 2 || scr_h != allocation->height - 2) {
 118                 scr_w = allocation->width - 2;
 119                 scr_h = allocation->height - 2;
 120                 scr_changed = 1;
 121         }
 122 }
 123
 124 static void *gtk_threadf(void *targ)
 125 {
 126         int argc = 0;
 127         char *argv[] = { "" };
 128         GtkWidget *box;
 129         sem_t *sem = targ;
 130
 131         g_thread_init (NULL);
 132         gdk_threads_init ();
 133         gdk_set_locale ();
 134         gtk_init (&argc, (char ***) &argv);
 135
 136         /* create new window */
 137         gtk_items.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 138         g_signal_connect (G_OBJECT (gtk_items.window), "delete_event",
 139                         G_CALLBACK (delete_event), NULL);
 140
 141         g_signal_connect (G_OBJECT (gtk_items.window), "destroy",
 142                         G_CALLBACK (destroy), NULL);
 143
 144         g_signal_connect (G_OBJECT (gtk_items.window), "key_press_event",
 145                         G_CALLBACK (key_press_event), NULL);
 146
 147         g_signal_connect (G_OBJECT (gtk_items.window), "key_release_event",
 148                         G_CALLBACK (key_release_event), NULL);
 149
 150         g_signal_connect (G_OBJECT (gtk_items.window), "size_allocate",
 151                         G_CALLBACK (size_allocate_event), NULL);
 152
 153         gtk_container_set_border_width (GTK_CONTAINER (gtk_items.window), 1);
 154         gtk_window_set_title ((GtkWindow *) gtk_items.window, verstring);
 155
 156         box = gtk_hbox_new(FALSE, 0);
 157         gtk_widget_show(box);
 158         gtk_container_add (GTK_CONTAINER (gtk_items.window), box);
 159
 160         /* live pixmap */
 161         gtk_items.pixmap1 = gtk_image_new ();
 162         gtk_container_add (GTK_CONTAINER (box), gtk_items.pixmap1);
 163         gtk_widget_show (gtk_items.pixmap1);
 164         gtk_widget_set_size_request (gtk_items.pixmap1, 320, 240);
 165
 166         gtk_widget_show  (gtk_items.window);
 167
 168         sem_post(sem);
 169
 170         gtk_main();
 171
 172         printf("linux: gtk thread finishing\n");
 173         exit(1);
 174
 175         return NULL;
 176 }
 177
 178 static void gtk_initf(void)
 179 {
 180         pthread_t gtk_thread;
 181         sem_t sem;
 182         sem_init(&sem, 0, 0);
 183
 184         pthread_create(&gtk_thread, NULL, gtk_threadf, &sem);
 185         pthread_detach(gtk_thread);
 186
 187         sem_wait(&sem);
 188         sem_close(&sem);
 189 }
 190
 191 void finalize_image(guchar *pixels, gpointer data)
 192 {
 193         free(pixels);
 194 }
 195
 196 /* --- */
 197
 198 static void realloc_screen(void)
 199 {
 200         void *old = g_screen_ptr;
 201         g_screen_width = scr_w;
 202         g_screen_height = scr_h;
 203         g_screen_ptr = calloc(g_screen_width * g_screen_height * 2, 1);
 204         free(old);
 205         scr_changed = 0;
 206 }
 207
 208 void gp2x_init(void)
 209 {
 210         printf("entering init()\n"); fflush(stdout);
 211
 212         realloc_screen();
 213         memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);
 214
 215         // snd
 216         sndout_oss_init();
 217
 218         gtk_initf();
 219
 220         printf("exitting init()\n"); fflush(stdout);
 221 }
 222
 223 void gp2x_deinit(void)
 224 {
 225         free(g_screen_ptr);
 226         sndout_oss_exit();
 227 }
 228
 229 /* video */
 230 void gp2x_video_flip(void)
 231 {
 232         GdkPixbuf       *pixbuf;
 233         unsigned char   *image;
 234         int             pixel_count, i;
 235
 236         pixel_count = g_screen_width * g_screen_height;
 237
 238         gdk_threads_enter();
 239
 240         image = malloc(pixel_count * 3);
 241         if (image == NULL)
 242         {
 243                 gdk_threads_leave();
 244                 return;
 245         }
 246
 247         if (current_bpp == 8)
 248         {
 249                 unsigned char *pixels = g_screen_ptr;
 250                 int pix;
 251
 252                 for (i = 0; i < pixel_count; i++)
 253                 {
 254                         pix = current_pal[pixels[i]];
 255                         image[3 * i + 0] = pix >> 16;
 256                         image[3 * i + 1] = pix >>  8;
 257                         image[3 * i + 2] = pix;
 258                 }
 259         }
 260         else
 261         {
 262                 unsigned short *pixels = g_screen_ptr;
 263
 264                 for (i = 0; i < pixel_count; i++)
 265                 {
 266                         /*  in:           rrrr rggg gggb bbbb */
 267                         /* out: rrrr r000 gggg gg00 bbbb b000 */
 268                         image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
 269                         image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
 270                         image[3 * i + 2] = (pixels[i] << 3);
 271                 }
 272         }
 273
 274         pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
 275                         FALSE, 8, g_screen_width, g_screen_height,
 276                         g_screen_width * 3, finalize_image, NULL);
 277         gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
 278         g_object_unref (pixbuf);
 279
 280         gdk_threads_leave();
 281
 282         if (scr_changed)
 283                 realloc_screen();
 284 }
 285
 286 void gp2x_video_flip2(void)
 287 {
 288         gp2x_video_flip();
 289 }
 290
 291 void gp2x_video_changemode(int bpp)
 292 {
 293         current_bpp = bpp;
 294 }
 295
 296 void gp2x_video_changemode2(int bpp)
 297 {
 298         current_bpp = bpp;
 299 }
 300
 301 void gp2x_video_setpalette(int *pal, int len)
 302 {
 303         memcpy(current_pal, pal, len*4);
 304 }
 305
 306 void gp2x_video_flush_cache(void)
 307 {
 308 }
 309
 310 void gp2x_video_RGB_setscaling(int v_offs, int W, int H)
 311 {
 312 }
 313
 314 void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
 315 {
 316         if ((char *)g_screen_ptr + offset != data)
 317                 memcpy((char *)g_screen_ptr + offset, data, len);
 318 }
 319
 320 void gp2x_memcpy_all_buffers(void *data, int offset, int len)
 321 {
 322         memcpy((char *)g_screen_ptr + offset, data, len);
 323 }
 324
 325
 326 void gp2x_memset_all_buffers(int offset, int byte, int len)
 327 {
 328         memset((char *)g_screen_ptr + offset, byte, len);
 329 }
 330
 331 void gp2x_pd_clone_buffer2(void)
 332 {
 333         memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);
 334 }
 335
 336 /* joy */
 337 unsigned long gp2x_joystick_read(int allow_usb_joy)
 338 {
 339         return current_keys;
 340 }
 341
 342 int gp2x_touchpad_read(int *x, int *y)
 343 {
 344         return -1;
 345 }
 346
 347 /* 940 */
 348 int crashed_940 = 0;
 349 void Pause940(int yes)
 350 {
 351 }
 352
 353 void Reset940(int yes, int bank)
 354 {
 355 }
 356
 357 /* faking gp2x cpuctrl.c */
 358 void cpuctrl_init(void)
 359 {
 360 }
 361
 362 void cpuctrl_deinit(void)
 363 {
 364 }
 365
 366 void set_FCLK(unsigned MHZ)
 367 {
 368 }
 369
 370 void Disable_940(void)
 371 {
 372 }
 373
 374 void gp2x_video_wait_vsync(void)
 375 {
 376 }
 377
 378 void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
 379 {
 380 }
 381
 382 void set_gamma(int g100, int A_SNs_curve)
 383 {
 384 }
 385
 386 void set_LCD_custom_rate(int rate)
 387 {
 388 }
 389
 390 void unset_LCD_custom_rate(void)
 391 {
 392 }
 393
 394 /* squidgehack.c */
 395 int mmuhack(void)
 396 {
 397         return 0;
 398 }
 399
 400
 401 int mmuunhack(void)
 402 {
 403         return 0;
 404 }
 405
 406
 407 /* misc */
 408 void spend_cycles(int c)
 409 {
 410         usleep(c/200);
 411 }
 412
 413 /* lprintf */
 414 void lprintf(const char *fmt, ...)
 415 {
 416         va_list vl;
 417
 418         va_start(vl, fmt);
 419         vprintf(fmt, vl);
 420         va_end(vl);
 421 }
 422