some audio problems fixed, missing files added
[picodrive.git] / platform / 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 <gtk/gtk.h>
7
8 #include <unistd.h>
9 #include <sys/types.h>
10 #include <sys/stat.h>
11 #include <sys/ioctl.h>
12 #include <sys/soundcard.h>
13 #include <fcntl.h>
14 #include <errno.h>
15
16 #include "../gp2x/emu.h"
17 #include "../gp2x/gp2x.h"
18 #include "../gp2x/usbjoy.h"
19 #include "../gp2x/version.h"
20
21 void *gp2x_screen;
22 static int current_bpp = 8;
23 static int current_pal[256];
24 static unsigned long current_keys = 0;
25 static int sounddev = 0, mixerdev = 0;
26 static const char *verstring = "PicoDrive " VERSION;
27
28 // dummies
29 char *ext_menu = 0, *ext_state = 0;
30
31 /* gtk */
32 struct gtk_global_struct
33 {
34         GtkWidget *window;
35         GtkWidget *pixmap1;
36 } gtk_items;
37
38
39 static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data)
40 {
41         return FALSE;
42 }
43
44 static void destroy (GtkWidget *widget, gpointer data)
45 {
46         gtk_main_quit ();
47 }
48
49 static gint key_press_event (GtkWidget *widget, GdkEventKey *event)
50 {
51         switch (event->hardware_keycode)
52         {
53                 case 0x62: current_keys |= GP2X_UP;    break;
54                 case 0x68: current_keys |= GP2X_DOWN;  break;
55                 case 0x64: current_keys |= GP2X_LEFT;  break;
56                 case 0x66: current_keys |= GP2X_RIGHT; break;
57                 case 0x24: current_keys |= GP2X_START; break; // enter
58                 case 0x23: current_keys |= GP2X_SELECT;break; // ]
59                 case 0x34: current_keys |= GP2X_A;     break; // z
60                 case 0x35: current_keys |= GP2X_X;     break; // x
61                 case 0x36: current_keys |= GP2X_B;     break; // c
62                 case 0x37: current_keys |= GP2X_Y;     break; // v
63                 case 0x27: current_keys |= GP2X_L;     break; // s
64                 case 0x28: current_keys |= GP2X_R;     break; // d
65                 case 0x29: current_keys |= GP2X_PUSH;  break; // f
66                 case 0x18: current_keys |= GP2X_VOL_DOWN;break; // q
67                 case 0x19: current_keys |= GP2X_VOL_UP;break; // w
68         }
69
70         return 0;
71 }
72
73 static gint key_release_event (GtkWidget *widget, GdkEventKey *event)
74 {
75         switch (event->hardware_keycode)
76         {
77                 case 0x62: current_keys &= ~GP2X_UP;    break;
78                 case 0x68: current_keys &= ~GP2X_DOWN;  break;
79                 case 0x64: current_keys &= ~GP2X_LEFT;  break;
80                 case 0x66: current_keys &= ~GP2X_RIGHT; break;
81                 case 0x24: current_keys &= ~GP2X_START; break; // enter
82                 case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
83                 case 0x34: current_keys &= ~GP2X_A;     break; // z
84                 case 0x35: current_keys &= ~GP2X_X;     break; // x
85                 case 0x36: current_keys &= ~GP2X_B;     break; // c
86                 case 0x37: current_keys &= ~GP2X_Y;     break; // v
87                 case 0x27: current_keys &= ~GP2X_L;     break; // s
88                 case 0x28: current_keys &= ~GP2X_R;     break; // d
89                 case 0x29: current_keys &= ~GP2X_PUSH;  break; // f
90                 case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
91                 case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
92         }
93
94         return 0;
95 }
96
97 static void *gtk_threadf(void *none)
98 {
99         gtk_main();
100
101         printf("linux: gtk thread finishing\n");
102         engineState = PGS_Quit;
103
104         return NULL;
105 }
106
107 static void gtk_initf(void)
108 {
109         int argc = 0;
110         char *argv[] = { "" };
111         GtkWidget *box;
112         pthread_t gtk_thread;
113
114         g_thread_init (NULL);
115         gdk_threads_init ();
116         gdk_set_locale ();
117         gtk_init (&argc, (char ***) &argv);
118
119         /* create new window */
120         gtk_items.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
121         g_signal_connect (G_OBJECT (gtk_items.window), "delete_event",
122                         G_CALLBACK (delete_event), NULL);
123
124         g_signal_connect (G_OBJECT (gtk_items.window), "destroy",
125                         G_CALLBACK (destroy), NULL);
126
127         g_signal_connect (G_OBJECT (gtk_items.window), "key_press_event",
128                         G_CALLBACK (key_press_event), NULL);
129
130         g_signal_connect (G_OBJECT (gtk_items.window), "key_release_event",
131                         G_CALLBACK (key_release_event), NULL);
132
133         gtk_container_set_border_width (GTK_CONTAINER (gtk_items.window), 2);
134         gtk_window_set_title ((GtkWindow *) gtk_items.window, verstring);
135
136         box = gtk_hbox_new(FALSE, 0);
137         gtk_widget_show(box);
138         gtk_container_add (GTK_CONTAINER (gtk_items.window), box);
139
140         /* live pixmap */
141         gtk_items.pixmap1 = gtk_image_new ();
142         gtk_container_add (GTK_CONTAINER (box), gtk_items.pixmap1);
143         gtk_widget_show (gtk_items.pixmap1);
144         gtk_widget_set_size_request (gtk_items.pixmap1, 320, 240);
145
146         gtk_widget_show  (gtk_items.window);
147
148         // pthread_mutex_init (&thr_mutex, NULL);
149         // pthread_mutex_lock (&thr_mutex);
150         // pthread_mutex_init (&scanner_muttex, NULL);
151
152         pthread_create(&gtk_thread, NULL, gtk_threadf, NULL);
153 }
154
155 void finalize_image(guchar *pixels, gpointer data)
156 {
157         free(pixels);
158 }
159
160 /* --- */
161
162 void gp2x_init(void)
163 {
164         printf("entering init()\n"); fflush(stdout);
165
166         gp2x_screen = malloc(320*240*2 + 320*2);
167
168         // snd
169         mixerdev = open("/dev/mixer", O_RDWR);
170         if (mixerdev == -1)
171                 printf("open(\"/dev/mixer\") failed with %i\n", errno);
172
173         gtk_initf();
174
175         gp2x_usbjoy_init();
176
177         printf("exitting init()\n"); fflush(stdout);
178 }
179
180 void gp2x_deinit(void)
181 {
182         free(gp2x_screen);
183         if (sounddev > 0) close(sounddev);
184         close(mixerdev);
185         gp2x_usbjoy_deinit();
186 }
187
188 /* video */
189 void gp2x_video_flip(void)
190 {
191         GdkPixbuf       *pixbuf;
192         unsigned char   *image;
193         int             i;
194
195         gdk_threads_enter();
196
197         image = malloc (320*240*3);
198         if (image == NULL)
199         {
200                 gdk_threads_leave();
201                 return;
202         }
203
204         if (current_bpp == 8)
205         {
206                 unsigned char *pixels = gp2x_screen;
207                 int pix;
208
209                 for (i = 0; i < 320*240; i++)
210                 {
211                         pix = current_pal[pixels[i]];
212                         image[3 * i + 0] = pix >> 16;
213                         image[3 * i + 1] = pix >>  8;
214                         image[3 * i + 2] = pix;
215                 }
216         }
217         else
218         {
219                 unsigned short *pixels = gp2x_screen;
220
221                 for (i = 0; i < 320*240; i++)
222                 {
223                         /*  in:           rrrr rggg gggb bbbb */
224                         /* out: rrrr r000 gggg gg00 bbbb b000 */
225                         image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
226                         image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
227                         image[3 * i + 2] = (pixels[i] << 3);
228                 }
229         }
230
231         pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
232                         FALSE, 8, 320, 240, 320*3, finalize_image, NULL);
233         gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
234         g_object_unref (pixbuf);
235
236         gdk_threads_leave();
237 }
238
239 void gp2x_video_changemode(int bpp)
240 {
241         current_bpp = bpp;
242 }
243
244 void gp2x_video_setpalette(int *pal, int len)
245 {
246         memcpy(current_pal, pal, len*4);
247 }
248
249 void gp2x_video_RGB_setscaling(int W, int H)
250 {
251 }
252
253 void gp2x_memcpy_all_buffers(void *data, int offset, int len)
254 {
255         memcpy((char *)gp2x_screen + offset, data, len);
256 }
257
258
259 void gp2x_memset_all_buffers(int offset, int byte, int len)
260 {
261         memset((char *)gp2x_screen + offset, byte, len);
262 }
263
264
265 /* sound */
266 static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
267
268 void gp2x_start_sound(int rate, int bits, int stereo)
269 {
270         int frag = 0, bsize, buffers;
271
272         // if no settings change, we don't need to do anything
273         if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;
274
275         if (sounddev > 0) close(sounddev);
276         sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC);
277         if (sounddev == -1)
278                 printf("open(\"/dev/dsp\") failed with %i\n", errno);
279
280         ioctl(sounddev, SNDCTL_DSP_SPEED,  &rate);
281         ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits);
282         ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo);
283         // calculate buffer size
284         buffers = 16;
285         bsize = rate / 32;
286         if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding
287         while ((bsize>>=1)) frag++;
288         frag |= buffers<<16; // 16 buffers
289         ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag);
290         printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n",
291                 rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff));
292
293         s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
294 }
295
296 void gp2x_sound_write(void *buff, int len)
297 {
298         write(sounddev, buff, len);
299 }
300
301 void gp2x_sound_sync(void)
302 {
303         ioctl(sounddev, SOUND_PCM_SYNC, 0);
304 }
305
306 void gp2x_sound_volume(int l, int r)
307 {
308         l=l<0?0:l; l=l>255?255:l; r=r<0?0:r; r=r>255?255:r;
309         l<<=8; l|=r;
310         ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &l); /*SOUND_MIXER_WRITE_VOLUME*/
311 }
312
313 /* joy */
314 unsigned long gp2x_joystick_read(int allow_usb_joy)
315 {
316         unsigned long value = current_keys;
317         int i;
318
319         if (allow_usb_joy && num_of_joys > 0) {
320                 // check the usb joy as well..
321                 gp2x_usbjoy_update();
322                 for (i = 0; i < num_of_joys; i++)
323                         value |= gp2x_usbjoy_check(i);
324         }
325
326         return value;
327 }
328
329 /* 940 */
330 int crashed_940 = 0;
331 void Pause940(int yes)
332 {
333 }
334
335 void Reset940(int yes, int bank)
336 {
337 }
338
339 /* faking gp2x cpuctrl.c */
340 void cpuctrl_init(void)
341 {
342 }
343
344 void cpuctrl_deinit(void)
345 {
346 }
347
348 void set_FCLK(unsigned MHZ)
349 {
350 }
351
352 void Disable_940(void)
353 {
354 }
355
356 void gp2x_video_wait_vsync(void)
357 {
358 }
359
360 void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
361 {
362 }
363
364 void set_gamma(int g100)
365 {
366 }
367
368
369 /* squidgehack.c */
370 int mmuhack(void)
371 {
372         return 0;
373 }
374
375
376 int mmuunhack(void)
377 {
378         return 0;
379 }
380
381
382 /* misc */
383 void spend_cycles(int c)
384 {
385         usleep(c/*/200*/);
386 }
387
388
389