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/version.h"
  16 #include "../common/emu.h"
  17 #include "../common/menu.h"
  18 #include "../common/readpng.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 int crashed_940 = 0;
  32 int default_cpu_clock = 123;
  33 void *gp2x_memregs = NULL;
  34
  35 /* gtk */
  36 struct gtk_global_struct
  37 {
  38         GtkWidget *window;
  39         GtkWidget *pixmap1;
  40 } gtk_items;
  41
  42
  43 static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data)
  44 {
  45         return FALSE;
  46 }
  47
  48 static void destroy (GtkWidget *widget, gpointer data)
  49 {
  50         gtk_main_quit ();
  51 }
  52
  53 /* faking GP2X pad */
  54 enum  { GP2X_UP=0x1,       GP2X_LEFT=0x4,       GP2X_DOWN=0x10,  GP2X_RIGHT=0x40,
  55         GP2X_START=1<<8,   GP2X_SELECT=1<<9,    GP2X_L=1<<10,    GP2X_R=1<<11,
  56         GP2X_A=1<<12,      GP2X_B=1<<13,        GP2X_X=1<<14,    GP2X_Y=1<<15,
  57         GP2X_VOL_UP=1<<23, GP2X_VOL_DOWN=1<<22, GP2X_PUSH=1<<27 };
  58
  59 static gint key_press_event (GtkWidget *widget, GdkEventKey *event)
  60 {
  61         switch (event->hardware_keycode)
  62         {
  63                 case 111:
  64                 case 0x62: current_keys |= GP2X_UP;    break;
  65                 case 116:
  66                 case 0x68: current_keys |= GP2X_DOWN;  break;
  67                 case 113:
  68                 case 0x64: current_keys |= GP2X_LEFT;  break;
  69                 case 114:
  70                 case 0x66: current_keys |= GP2X_RIGHT; break;
  71                 case 0x24: current_keys |= GP2X_START; break; // enter
  72                 case 0x23: current_keys |= GP2X_SELECT;break; // ]
  73                 case 0x34: current_keys |= GP2X_A;     break; // z
  74                 case 0x35: current_keys |= GP2X_X;     break; // x
  75                 case 0x36: current_keys |= GP2X_B;     break; // c
  76                 case 0x37: current_keys |= GP2X_Y;     break; // v
  77                 case 0x27: current_keys |= GP2X_L;     break; // s
  78                 case 0x28: current_keys |= GP2X_R;     break; // d
  79                 case 0x29: current_keys |= GP2X_PUSH;  break; // f
  80                 case 0x18: current_keys |= GP2X_VOL_DOWN;break; // q
  81                 case 0x19: current_keys |= GP2X_VOL_UP;break; // w
  82                 case 0x2d: log_io_clear(); break; // k
  83                 case 0x2e: log_io_dump();  break; // l
  84                 case 0x17: { // tab
  85                         extern int PicoReset(void);
  86                         PicoReset();
  87                         break;
  88                 }
  89         }
  90
  91         return 0;
  92 }
  93
  94 static gint key_release_event (GtkWidget *widget, GdkEventKey *event)
  95 {
  96         switch (event->hardware_keycode)
  97         {
  98                 case 111:
  99                 case 0x62: current_keys &= ~GP2X_UP;    break;
 100                 case 116:
 101                 case 0x68: current_keys &= ~GP2X_DOWN;  break;
 102                 case 113:
 103                 case 0x64: current_keys &= ~GP2X_LEFT;  break;
 104                 case 114:
 105                 case 0x66: current_keys &= ~GP2X_RIGHT; break;
 106                 case 0x24: current_keys &= ~GP2X_START; break; // enter
 107                 case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
 108                 case 0x34: current_keys &= ~GP2X_A;     break; // z
 109                 case 0x35: current_keys &= ~GP2X_X;     break; // x
 110                 case 0x36: current_keys &= ~GP2X_B;     break; // c
 111                 case 0x37: current_keys &= ~GP2X_Y;     break; // v
 112                 case 0x27: current_keys &= ~GP2X_L;     break; // s
 113                 case 0x28: current_keys &= ~GP2X_R;     break; // d
 114                 case 0x29: current_keys &= ~GP2X_PUSH;  break; // f
 115                 case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
 116                 case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
 117         }
 118
 119         return 0;
 120 }
 121
 122 static void size_allocate_event(GtkWidget *widget, GtkAllocation *allocation, gpointer user_data)
 123 {
 124         // printf("%dx%d\n", allocation->width, allocation->height);
 125         if (scr_w != allocation->width - 2 || scr_h != allocation->height - 2) {
 126                 scr_w = allocation->width - 2;
 127                 scr_h = allocation->height - 2;
 128                 scr_changed = 1;
 129         }
 130 }
 131
 132 static void *gtk_threadf(void *targ)
 133 {
 134         int argc = 0;
 135         char *argv[] = { "" };
 136         GtkWidget *box;
 137         sem_t *sem = targ;
 138
 139         g_thread_init (NULL);
 140         gdk_threads_init ();
 141         gdk_set_locale ();
 142         gtk_init (&argc, (char ***) &argv);
 143
 144         /* create new window */
 145         gtk_items.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 146         g_signal_connect (G_OBJECT (gtk_items.window), "delete_event",
 147                         G_CALLBACK (delete_event), NULL);
 148
 149         g_signal_connect (G_OBJECT (gtk_items.window), "destroy",
 150                         G_CALLBACK (destroy), NULL);
 151
 152         g_signal_connect (G_OBJECT (gtk_items.window), "key_press_event",
 153                         G_CALLBACK (key_press_event), NULL);
 154
 155         g_signal_connect (G_OBJECT (gtk_items.window), "key_release_event",
 156                         G_CALLBACK (key_release_event), NULL);
 157
 158         g_signal_connect (G_OBJECT (gtk_items.window), "size_allocate",
 159                         G_CALLBACK (size_allocate_event), NULL);
 160
 161         gtk_container_set_border_width (GTK_CONTAINER (gtk_items.window), 1);
 162         gtk_window_set_title ((GtkWindow *) gtk_items.window, verstring);
 163
 164         box = gtk_hbox_new(FALSE, 0);
 165         gtk_widget_show(box);
 166         gtk_container_add (GTK_CONTAINER (gtk_items.window), box);
 167
 168         /* live pixmap */
 169         gtk_items.pixmap1 = gtk_image_new ();
 170         gtk_container_add (GTK_CONTAINER (box), gtk_items.pixmap1);
 171         gtk_widget_show (gtk_items.pixmap1);
 172         gtk_widget_set_size_request (gtk_items.pixmap1, 320, 240);
 173
 174         gtk_widget_show  (gtk_items.window);
 175
 176         sem_post(sem);
 177
 178         gtk_main();
 179
 180         printf("linux: gtk thread finishing\n");
 181         exit(1);
 182
 183         return NULL;
 184 }
 185
 186 static void gtk_initf(void)
 187 {
 188         pthread_t gtk_thread;
 189         sem_t sem;
 190         sem_init(&sem, 0, 0);
 191
 192         pthread_create(&gtk_thread, NULL, gtk_threadf, &sem);
 193         pthread_detach(gtk_thread);
 194
 195         sem_wait(&sem);
 196         sem_close(&sem);
 197 }
 198
 199 void finalize_image(guchar *pixels, gpointer data)
 200 {
 201         free(pixels);
 202 }
 203
 204 /* --- */
 205
 206 static void realloc_screen(void)
 207 {
 208         void *old = g_screen_ptr;
 209         g_screen_width = scr_w;
 210         g_screen_height = scr_h;
 211         g_screen_ptr = calloc(g_screen_width * g_screen_height * 2, 1);
 212         free(old);
 213         scr_changed = 0;
 214 }
 215
 216 /* gp2x/emu.c stuff, most to be rm'd */
 217 static void gp2x_video_flip_(void)
 218 {
 219         GdkPixbuf       *pixbuf;
 220         unsigned char   *image;
 221         int             pixel_count, i;
 222
 223         pixel_count = g_screen_width * g_screen_height;
 224
 225         gdk_threads_enter();
 226
 227         image = malloc(pixel_count * 3);
 228         if (image == NULL)
 229         {
 230                 gdk_threads_leave();
 231                 return;
 232         }
 233
 234         if (current_bpp == 8)
 235         {
 236                 unsigned char *pixels = g_screen_ptr;
 237                 int pix;
 238
 239                 for (i = 0; i < pixel_count; i++)
 240                 {
 241                         pix = current_pal[pixels[i]];
 242                         image[3 * i + 0] = pix >> 16;
 243                         image[3 * i + 1] = pix >>  8;
 244                         image[3 * i + 2] = pix;
 245                 }
 246         }
 247         else
 248         {
 249                 unsigned short *pixels = g_screen_ptr;
 250
 251                 for (i = 0; i < pixel_count; i++)
 252                 {
 253                         /*  in:           rrrr rggg gggb bbbb */
 254                         /* out: rrrr r000 gggg gg00 bbbb b000 */
 255                         image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
 256                         image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
 257                         image[3 * i + 2] = (pixels[i] << 3);
 258                 }
 259         }
 260
 261         pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
 262                         FALSE, 8, g_screen_width, g_screen_height,
 263                         g_screen_width * 3, finalize_image, NULL);
 264         gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
 265         g_object_unref (pixbuf);
 266
 267         gdk_threads_leave();
 268
 269         if (scr_changed)
 270                 realloc_screen();
 271 }
 272
 273 static void gp2x_video_changemode_ll_(int bpp)
 274 {
 275         current_bpp = bpp;
 276 }
 277
 278 static void gp2x_video_setpalette_(int *pal, int len)
 279 {
 280         memcpy(current_pal, pal, len*4);
 281 }
 282
 283 void gp2x_memcpy_all_buffers(void *data, int offset, int len)
 284 {
 285 }
 286
 287 void gp2x_memset_all_buffers(int offset, int byte, int len)
 288 {
 289         memset((char *)g_screen_ptr + offset, byte, len);
 290 }
 291
 292 void gp2x_video_changemode(int bpp)
 293 {
 294         gp2x_video_changemode_ll_(bpp);
 295 }
 296
 297 void gp2x_make_fb_bufferable(int yes)
 298 {
 299 }
 300
 301 int soc_detect(void)
 302 {
 303         return 0;
 304 }
 305
 306 /* plat */
 307 static char menu_bg_buffer[320*240*2];
 308 char cpu_clk_name[16] = "GP2X CPU clocks";
 309
 310 void plat_video_menu_enter(int is_rom_loaded)
 311 {
 312         if (is_rom_loaded)
 313         {
 314                 // darken the active framebuffer
 315                 memset(g_screen_ptr, 0, 320*8*2);
 316                 menu_darken_bg((char *)g_screen_ptr + 320*8*2, 320*224, 1);
 317                 memset((char *)g_screen_ptr + 320*232*2, 0, 320*8*2);
 318         }
 319         else
 320         {
 321                 // should really only happen once, on startup..
 322                 readpng(g_screen_ptr, "skin/background.png", READPNG_BG);
 323         }
 324
 325         memcpy(menu_bg_buffer, g_screen_ptr, 320*240*2);
 326
 327         // switch to 16bpp
 328         gp2x_video_changemode_ll_(16);
 329         gp2x_video_flip_();
 330 }
 331
 332 void plat_video_menu_begin(void)
 333 {
 334         memcpy(g_screen_ptr, menu_bg_buffer, 320*240*2);
 335 }
 336
 337 void plat_video_menu_end(void)
 338 {
 339         gp2x_video_flip_();
 340 }
 341
 342 void plat_validate_config(void)
 343 {
 344 //      PicoOpt &= ~POPT_EXT_FM;
 345 }
 346
 347 void plat_early_init(void)
 348 {
 349 }
 350
 351 void plat_init(void)
 352 {
 353         realloc_screen();
 354         memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);
 355
 356         // snd
 357         sndout_oss_init();
 358
 359         gtk_initf();
 360 }
 361
 362 void plat_finish(void)
 363 {
 364         free(g_screen_ptr);
 365         sndout_oss_exit();
 366 }
 367
 368 /* nasty */
 369 static void do_nothing()
 370 {
 371 }
 372
 373 void *gp2x_video_flip = gp2x_video_flip_;
 374 void *gp2x_video_flip2 = gp2x_video_flip_;
 375 void *gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
 376 void *gp2x_video_setpalette = gp2x_video_setpalette_;
 377
 378 void *gp2x_video_RGB_setscaling = do_nothing;
 379 void *gp2x_video_wait_vsync = do_nothing;
 380 void *gp2x_set_cpuclk = do_nothing;
 381 void *set_lcd_custom_rate = do_nothing;
 382 void *unset_lcd_custom_rate = do_nothing;
 383 void *set_lcd_gamma = do_nothing;
 384 void *set_ram_timings = do_nothing;
 385 void *unset_ram_timings = do_nothing;
 386
 387 /* joy */
 388 int gp2x_touchpad_read(int *x, int *y)
 389 {
 390         return -1;
 391 }
 392
 393 /* misc */
 394 void spend_cycles(int c)
 395 {
 396         usleep(c/200);
 397 }
 398
 399 int mp3_get_bitrate(FILE *f, int size)
 400 {
 401         return 128;
 402 }
 403
 404 void mp3_start_play(FILE *f, int pos)
 405 {
 406 }
 407
 408 void mp3_update(int *buffer, int length, int stereo)
 409 {
 410 }
 411
 412 /* lprintf */
 413 void lprintf(const char *fmt, ...)
 414 {
 415         va_list vl;
 416
 417         va_start(vl, fmt);
 418         vprintf(fmt, vl);
 419         va_end(vl);
 420 }
 421