linux/gp2x.c

   1 /* faking/emulating gp2x 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 int mix_32_to_16l_level;
  31
  32 /* gtk */
  33 struct gtk_global_struct
  34 {
  35         GtkWidget *window;
  36         GtkWidget *pixmap1;
  37 } gtk_items;
  38
  39
  40 static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data)
  41 {
  42         return FALSE;
  43 }
  44
  45 static void destroy (GtkWidget *widget, gpointer data)
  46 {
  47         gtk_main_quit ();
  48 }
  49
  50 /* faking GP2X pad */
  51 enum  { GP2X_UP=0x1,       GP2X_LEFT=0x4,       GP2X_DOWN=0x10,  GP2X_RIGHT=0x40,
  52         GP2X_START=1<<8,   GP2X_SELECT=1<<9,    GP2X_L=1<<10,    GP2X_R=1<<11,
  53         GP2X_A=1<<12,      GP2X_B=1<<13,        GP2X_X=1<<14,    GP2X_Y=1<<15,
  54         GP2X_VOL_UP=1<<23, GP2X_VOL_DOWN=1<<22, GP2X_PUSH=1<<27 };
  55
  56 static gint key_press_event (GtkWidget *widget, GdkEventKey *event)
  57 {
  58         switch (event->hardware_keycode)
  59         {
  60                 case 111:
  61                 case 0x62: current_keys |= GP2X_UP;    break;
  62                 case 116:
  63                 case 0x68: current_keys |= GP2X_DOWN;  break;
  64                 case 113:
  65                 case 0x64: current_keys |= GP2X_LEFT;  break;
  66                 case 114:
  67                 case 0x66: current_keys |= GP2X_RIGHT; break;
  68                 case 0x24: current_keys |= GP2X_START; break; // enter
  69                 case 0x23: current_keys |= GP2X_SELECT;break; // ]
  70                 case 0x34: current_keys |= GP2X_A;     break; // z
  71                 case 0x35: current_keys |= GP2X_X;     break; // x
  72                 case 0x36: current_keys |= GP2X_B;     break; // c
  73                 case 0x37: current_keys |= GP2X_Y;     break; // v
  74                 case 0x27: current_keys |= GP2X_L;     break; // s
  75                 case 0x28: current_keys |= GP2X_R;     break; // d
  76                 case 0x29: current_keys |= GP2X_PUSH;  break; // f
  77                 case 0x18: current_keys |= GP2X_VOL_DOWN;break; // q
  78                 case 0x19: current_keys |= GP2X_VOL_UP;break; // w
  79                 case 0x2d: log_io_clear(); break; // k
  80                 case 0x2e: log_io_dump();  break; // l
  81                 case 0x17: { // tab
  82                         extern int PicoReset(void);
  83                         PicoReset();
  84                         break;
  85                 }
  86         }
  87
  88         return 0;
  89 }
  90
  91 static gint key_release_event (GtkWidget *widget, GdkEventKey *event)
  92 {
  93         switch (event->hardware_keycode)
  94         {
  95                 case 111:
  96                 case 0x62: current_keys &= ~GP2X_UP;    break;
  97                 case 116:
  98                 case 0x68: current_keys &= ~GP2X_DOWN;  break;
  99                 case 113:
 100                 case 0x64: current_keys &= ~GP2X_LEFT;  break;
 101                 case 114:
 102                 case 0x66: current_keys &= ~GP2X_RIGHT; break;
 103                 case 0x24: current_keys &= ~GP2X_START; break; // enter
 104                 case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
 105                 case 0x34: current_keys &= ~GP2X_A;     break; // z
 106                 case 0x35: current_keys &= ~GP2X_X;     break; // x
 107                 case 0x36: current_keys &= ~GP2X_B;     break; // c
 108                 case 0x37: current_keys &= ~GP2X_Y;     break; // v
 109                 case 0x27: current_keys &= ~GP2X_L;     break; // s
 110                 case 0x28: current_keys &= ~GP2X_R;     break; // d
 111                 case 0x29: current_keys &= ~GP2X_PUSH;  break; // f
 112                 case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
 113                 case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
 114         }
 115
 116         return 0;
 117 }
 118
 119 static void size_allocate_event(GtkWidget *widget, GtkAllocation *allocation, gpointer user_data)
 120 {
 121         // printf("%dx%d\n", allocation->width, allocation->height);
 122         if (scr_w != allocation->width - 2 || scr_h != allocation->height - 2) {
 123                 scr_w = allocation->width - 2;
 124                 scr_h = allocation->height - 2;
 125                 scr_changed = 1;
 126         }
 127 }
 128
 129 static void *gtk_threadf(void *targ)
 130 {
 131         int argc = 0;
 132         char *argv[] = { "" };
 133         GtkWidget *box;
 134         sem_t *sem = targ;
 135
 136         g_thread_init (NULL);
 137         gdk_threads_init ();
 138         gdk_set_locale ();
 139         gtk_init (&argc, (char ***) &argv);
 140
 141         /* create new window */
 142         gtk_items.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 143         g_signal_connect (G_OBJECT (gtk_items.window), "delete_event",
 144                         G_CALLBACK (delete_event), NULL);
 145
 146         g_signal_connect (G_OBJECT (gtk_items.window), "destroy",
 147                         G_CALLBACK (destroy), NULL);
 148
 149         g_signal_connect (G_OBJECT (gtk_items.window), "key_press_event",
 150                         G_CALLBACK (key_press_event), NULL);
 151
 152         g_signal_connect (G_OBJECT (gtk_items.window), "key_release_event",
 153                         G_CALLBACK (key_release_event), NULL);
 154
 155         g_signal_connect (G_OBJECT (gtk_items.window), "size_allocate",
 156                         G_CALLBACK (size_allocate_event), NULL);
 157
 158         gtk_container_set_border_width (GTK_CONTAINER (gtk_items.window), 1);
 159         gtk_window_set_title ((GtkWindow *) gtk_items.window, verstring);
 160
 161         box = gtk_hbox_new(FALSE, 0);
 162         gtk_widget_show(box);
 163         gtk_container_add (GTK_CONTAINER (gtk_items.window), box);
 164
 165         /* live pixmap */
 166         gtk_items.pixmap1 = gtk_image_new ();
 167         gtk_container_add (GTK_CONTAINER (box), gtk_items.pixmap1);
 168         gtk_widget_show (gtk_items.pixmap1);
 169         gtk_widget_set_size_request (gtk_items.pixmap1, 320, 240);
 170
 171         gtk_widget_show  (gtk_items.window);
 172
 173         sem_post(sem);
 174
 175         gtk_main();
 176
 177         printf("linux: gtk thread finishing\n");
 178         exit(1);
 179
 180         return NULL;
 181 }
 182
 183 static void gtk_initf(void)
 184 {
 185         pthread_t gtk_thread;
 186         sem_t sem;
 187         sem_init(&sem, 0, 0);
 188
 189         pthread_create(&gtk_thread, NULL, gtk_threadf, &sem);
 190         pthread_detach(gtk_thread);
 191
 192         sem_wait(&sem);
 193         sem_close(&sem);
 194 }
 195
 196 void finalize_image(guchar *pixels, gpointer data)
 197 {
 198         free(pixels);
 199 }
 200
 201 /* --- */
 202
 203 static void realloc_screen(void)
 204 {
 205         void *old = g_screen_ptr;
 206         g_screen_width = scr_w;
 207         g_screen_height = scr_h;
 208         g_screen_ptr = calloc(g_screen_width * g_screen_height * 2, 1);
 209         free(old);
 210         scr_changed = 0;
 211 }
 212
 213 void plat_init(void)
 214 {
 215         printf("entering init()\n"); fflush(stdout);
 216
 217         realloc_screen();
 218         memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);
 219
 220         // snd
 221         sndout_oss_init();
 222
 223         gtk_initf();
 224
 225         printf("exitting init()\n"); fflush(stdout);
 226 }
 227
 228 void plat_finish(void)
 229 {
 230         free(g_screen_ptr);
 231         sndout_oss_exit();
 232 }
 233
 234 /* video */
 235 void gp2x_video_flip(void)
 236 {
 237         GdkPixbuf       *pixbuf;
 238         unsigned char   *image;
 239         int             pixel_count, i;
 240
 241         pixel_count = g_screen_width * g_screen_height;
 242
 243         gdk_threads_enter();
 244
 245         image = malloc(pixel_count * 3);
 246         if (image == NULL)
 247         {
 248                 gdk_threads_leave();
 249                 return;
 250         }
 251
 252         if (current_bpp == 8)
 253         {
 254                 unsigned char *pixels = g_screen_ptr;
 255                 int pix;
 256
 257                 for (i = 0; i < pixel_count; i++)
 258                 {
 259                         pix = current_pal[pixels[i]];
 260                         image[3 * i + 0] = pix >> 16;
 261                         image[3 * i + 1] = pix >>  8;
 262                         image[3 * i + 2] = pix;
 263                 }
 264         }
 265         else
 266         {
 267                 unsigned short *pixels = g_screen_ptr;
 268
 269                 for (i = 0; i < pixel_count; i++)
 270                 {
 271                         /*  in:           rrrr rggg gggb bbbb */
 272                         /* out: rrrr r000 gggg gg00 bbbb b000 */
 273                         image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
 274                         image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
 275                         image[3 * i + 2] = (pixels[i] << 3);
 276                 }
 277         }
 278
 279         pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
 280                         FALSE, 8, g_screen_width, g_screen_height,
 281                         g_screen_width * 3, finalize_image, NULL);
 282         gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
 283         g_object_unref (pixbuf);
 284
 285         gdk_threads_leave();
 286
 287         if (scr_changed)
 288                 realloc_screen();
 289 }
 290
 291 void gp2x_video_flip2(void)
 292 {
 293         gp2x_video_flip();
 294 }
 295
 296 void gp2x_video_changemode(int bpp)
 297 {
 298         current_bpp = bpp;
 299 }
 300
 301 void gp2x_video_changemode2(int bpp)
 302 {
 303         current_bpp = bpp;
 304 }
 305
 306 void gp2x_video_setpalette(int *pal, int len)
 307 {
 308         memcpy(current_pal, pal, len*4);
 309 }
 310
 311 void gp2x_video_RGB_setscaling(int v_offs, int W, int H)
 312 {
 313 }
 314
 315 void gp2x_memset_all_buffers(int offset, int byte, int len)
 316 {
 317         memset((char *)g_screen_ptr + offset, byte, len);
 318 }
 319
 320 /* joy */
 321 int gp2x_touchpad_read(int *x, int *y)
 322 {
 323         return -1;
 324 }
 325
 326 /* 940 */
 327 int crashed_940 = 0;
 328 void pause940(int yes)
 329 {
 330 }
 331
 332 void reset940(int yes, int bank)
 333 {
 334 }
 335
 336 /* faking gp2x cpuctrl.c */
 337 void cpuctrl_init(void)
 338 {
 339 }
 340
 341 void cpuctrl_deinit(void)
 342 {
 343 }
 344
 345 void set_FCLK(unsigned MHZ)
 346 {
 347 }
 348
 349 void Disable_940(void)
 350 {
 351 }
 352
 353 void gp2x_video_wait_vsync(void)
 354 {
 355 }
 356
 357 void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
 358 {
 359 }
 360
 361 void set_gamma(int g100, int A_SNs_curve)
 362 {
 363 }
 364
 365 void set_LCD_custom_rate(int rate)
 366 {
 367 }
 368
 369 void unset_LCD_custom_rate(void)
 370 {
 371 }
 372
 373 /* squidgehack.c */
 374 int mmuhack(void)
 375 {
 376         return 0;
 377 }
 378
 379
 380 int mmuunhack(void)
 381 {
 382         return 0;
 383 }
 384
 385
 386 /* misc */
 387 void spend_cycles(int c)
 388 {
 389         usleep(c/200);
 390 }
 391
 392 /* lprintf */
 393 void lprintf(const char *fmt, ...)
 394 {
 395         va_list vl;
 396
 397         va_start(vl, fmt);
 398         vprintf(fmt, vl);
 399         va_end(vl);
 400 }
 401