perfect vsync
[libpicofe.git] / linux / gp2x.c
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720ee7f6 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
21void *gp2x_screen;
22static int current_bpp = 8;
23static int current_pal[256];
24static unsigned long current_keys = 0;
25static int sounddev = 0, mixerdev = 0;
26static const char *verstring = "PicoDrive " VERSION;
27
28// dummies
29char *ext_menu = 0, *ext_state = 0;
30
31/* gtk */
32struct gtk_global_struct
33{
34 GtkWidget *window;
35 GtkWidget *pixmap1;
36} gtk_items;
37
38
39static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data)
40{
41 return FALSE;
42}
43
44static void destroy (GtkWidget *widget, gpointer data)
45{
46 gtk_main_quit ();
47}
48
49static 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
73static 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
97static 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
107static 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
155void finalize_image(guchar *pixels, gpointer data)
156{
157 free(pixels);
158}
159
160/* --- */
161
162void gp2x_init(void)
163{
164 printf("entering init()\n"); fflush(stdout);
165
166 gp2x_screen = malloc(320*240*2 + 320*2);
af6e9c49 167 memset(gp2x_screen, 0, 320*240*2 + 320*2);
720ee7f6 168
169 // snd
170 mixerdev = open("/dev/mixer", O_RDWR);
171 if (mixerdev == -1)
172 printf("open(\"/dev/mixer\") failed with %i\n", errno);
173
174 gtk_initf();
175
176 gp2x_usbjoy_init();
177
178 printf("exitting init()\n"); fflush(stdout);
179}
180
181void gp2x_deinit(void)
182{
183 free(gp2x_screen);
184 if (sounddev > 0) close(sounddev);
185 close(mixerdev);
186 gp2x_usbjoy_deinit();
187}
188
189/* video */
190void gp2x_video_flip(void)
191{
192 GdkPixbuf *pixbuf;
193 unsigned char *image;
194 int i;
195
196 gdk_threads_enter();
197
198 image = malloc (320*240*3);
199 if (image == NULL)
200 {
201 gdk_threads_leave();
202 return;
203 }
204
205 if (current_bpp == 8)
206 {
207 unsigned char *pixels = gp2x_screen;
208 int pix;
209
210 for (i = 0; i < 320*240; i++)
211 {
212 pix = current_pal[pixels[i]];
213 image[3 * i + 0] = pix >> 16;
214 image[3 * i + 1] = pix >> 8;
215 image[3 * i + 2] = pix;
216 }
217 }
218 else
219 {
220 unsigned short *pixels = gp2x_screen;
221
222 for (i = 0; i < 320*240; i++)
223 {
224 /* in: rrrr rggg gggb bbbb */
225 /* out: rrrr r000 gggg gg00 bbbb b000 */
226 image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
227 image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
228 image[3 * i + 2] = (pixels[i] << 3);
229 }
230 }
231
232 pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
233 FALSE, 8, 320, 240, 320*3, finalize_image, NULL);
234 gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
235 g_object_unref (pixbuf);
236
237 gdk_threads_leave();
238}
239
e5d315a5 240void gp2x_video_flip2(void)
241{
242 gp2x_video_flip();
243}
244
720ee7f6 245void gp2x_video_changemode(int bpp)
246{
247 current_bpp = bpp;
248}
249
e5d315a5 250void gp2x_video_changemode2(int bpp)
251{
252 current_bpp = bpp;
253}
254
720ee7f6 255void gp2x_video_setpalette(int *pal, int len)
256{
257 memcpy(current_pal, pal, len*4);
258}
259
79cad122 260void gp2x_video_RGB_setscaling(int v_offs, int W, int H)
720ee7f6 261{
262}
263
dccc2bd0 264void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
265{
266 memcpy((char *)gp2x_screen + offset, data, len);
267}
268
720ee7f6 269void gp2x_memcpy_all_buffers(void *data, int offset, int len)
270{
271 memcpy((char *)gp2x_screen + offset, data, len);
272}
273
274
275void gp2x_memset_all_buffers(int offset, int byte, int len)
276{
277 memset((char *)gp2x_screen + offset, byte, len);
278}
279
e5d315a5 280void gp2x_pd_clone_buffer2(void)
281{
282 memset(gp2x_screen, 0, 320*240);
283}
720ee7f6 284
285/* sound */
286static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
287
288void gp2x_start_sound(int rate, int bits, int stereo)
289{
290 int frag = 0, bsize, buffers;
291
292 // if no settings change, we don't need to do anything
293 if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;
294
295 if (sounddev > 0) close(sounddev);
296 sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC);
297 if (sounddev == -1)
298 printf("open(\"/dev/dsp\") failed with %i\n", errno);
299
300 ioctl(sounddev, SNDCTL_DSP_SPEED, &rate);
301 ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits);
302 ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo);
303 // calculate buffer size
304 buffers = 16;
305 bsize = rate / 32;
306 if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding
307 while ((bsize>>=1)) frag++;
308 frag |= buffers<<16; // 16 buffers
309 ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag);
310 printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n",
311 rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff));
312
313 s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
314}
315
316void gp2x_sound_write(void *buff, int len)
317{
318 write(sounddev, buff, len);
319}
320
598e7c06 321void gp2x_sound_sync(void)
322{
323 ioctl(sounddev, SOUND_PCM_SYNC, 0);
324}
325
720ee7f6 326void gp2x_sound_volume(int l, int r)
327{
328 l=l<0?0:l; l=l>255?255:l; r=r<0?0:r; r=r>255?255:r;
329 l<<=8; l|=r;
330 ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &l); /*SOUND_MIXER_WRITE_VOLUME*/
331}
332
333/* joy */
334unsigned long gp2x_joystick_read(int allow_usb_joy)
335{
336 unsigned long value = current_keys;
337 int i;
338
339 if (allow_usb_joy && num_of_joys > 0) {
340 // check the usb joy as well..
341 gp2x_usbjoy_update();
342 for (i = 0; i < num_of_joys; i++)
343 value |= gp2x_usbjoy_check(i);
344 }
345
346 return value;
347}
348
349/* 940 */
350int crashed_940 = 0;
351void Pause940(int yes)
352{
353}
354
8dfb9fd5 355void Reset940(int yes, int bank)
720ee7f6 356{
357}
358
359/* faking gp2x cpuctrl.c */
360void cpuctrl_init(void)
361{
362}
363
364void cpuctrl_deinit(void)
365{
366}
367
368void set_FCLK(unsigned MHZ)
369{
370}
371
372void Disable_940(void)
373{
374}
375
376void gp2x_video_wait_vsync(void)
377{
378}
379
380void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
381{
382}
383
384void set_gamma(int g100)
385{
386}
387
388
389/* squidgehack.c */
390int mmuhack(void)
391{
392 return 0;
393}
394
395
396int mmuunhack(void)
397{
398 return 0;
399}
400
401
402/* misc */
403void spend_cycles(int c)
404{
46ede6a6 405 usleep(c/200);
720ee7f6 406}
407
408
409