e6ee7529 |
1 | /* emulate minimal lib using SDL */ |
2 | |
3 | #include <stdio.h> |
4 | #include <SDL.h> |
5 | |
6 | #include <sys/types.h> |
7 | #include <sys/stat.h> |
8 | #include <fcntl.h> |
9 | #include <unistd.h> |
10 | #include <sys/ioctl.h> |
11 | #include <sys/soundcard.h> |
12 | #include <errno.h> |
13 | |
14 | #include "../gp2x/minimal.h" |
15 | #include "../gp2x/usbjoy.h" |
16 | |
17 | SDL_Surface *screen; |
18 | void *gp2x_screen; |
19 | static int sounddev = 0; |
20 | |
21 | |
22 | /* video stuff */ |
23 | void gp2x_video_flip(void) |
24 | { |
25 | if(SDL_MUSTLOCK(screen)) |
26 | SDL_LockSurface(screen); |
27 | |
28 | memcpy(screen->pixels, gp2x_screen, 320*240*screen->format->BytesPerPixel); |
29 | |
30 | if(SDL_MUSTLOCK(screen)) |
31 | SDL_UnlockSurface(screen); |
32 | |
33 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
34 | } |
35 | |
36 | |
37 | void gp2x_video_changemode2(int bpp) |
38 | { |
39 | const SDL_VideoInfo *vinf; |
40 | int flags=0; |
41 | |
42 | vinf=SDL_GetVideoInfo(); |
43 | |
44 | if(vinf->hw_available) |
45 | flags|=SDL_HWSURFACE; |
46 | |
47 | if (bpp == 8) |
48 | flags|=SDL_HWPALETTE; |
49 | |
50 | screen = SDL_SetVideoMode(320, 240, bpp, flags); |
51 | if(!screen) |
52 | { |
53 | puts(SDL_GetError()); |
54 | return; |
55 | } |
56 | |
57 | SDL_WM_SetCaption("FCE Ultra","FCE Ultra"); |
58 | } |
59 | |
60 | |
61 | static SDL_Color psdl[256]; |
62 | |
63 | void gp2x_video_changemode(int bpp) |
64 | { |
65 | gp2x_video_changemode2(bpp); |
66 | if (bpp == 8) |
67 | SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,256); |
68 | gp2x_video_flip(); |
69 | } |
70 | |
71 | |
72 | void gp2x_video_setpalette(int *pal, int len) |
73 | { |
74 | int i; |
75 | |
76 | for (i = 0; i < len; i++) |
77 | { |
78 | psdl[i].r = pal[i] >> 16; |
79 | psdl[i].g = pal[i] >> 8; |
80 | psdl[i].b = pal[i]; |
81 | } |
82 | |
83 | SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,len); |
84 | } |
85 | |
86 | |
87 | void gp2x_video_RGB_setscaling(int ln_offs, int W, int H) |
88 | { |
89 | } |
90 | |
91 | void gp2x_video_set_offs(int offs) |
92 | { |
93 | } |
94 | |
95 | void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len) |
96 | { |
97 | } |
98 | |
99 | |
100 | void gp2x_memcpy_all_buffers(void *data, int offset, int len) |
101 | { |
102 | } |
103 | |
104 | |
105 | void gp2x_memset_all_buffers(int offset, int byte, int len) |
106 | { |
107 | memset((char *)gp2x_screen + offset, byte, len); |
108 | } |
109 | |
110 | |
111 | unsigned long gp2x_joystick_read(int allow_usb_joy) |
112 | { |
113 | unsigned long keys_out = 0; |
114 | Uint8 *keys; |
115 | int i; |
116 | |
117 | SDL_PumpEvents(); |
118 | keys = SDL_GetKeyState(NULL); |
119 | |
120 | if (keys[SDLK_UP]) keys_out |= GP2X_UP; |
121 | if (keys[SDLK_LEFT]) keys_out |= GP2X_LEFT; |
122 | if (keys[SDLK_DOWN]) keys_out |= GP2X_DOWN; |
123 | if (keys[SDLK_RIGHT]) keys_out |= GP2X_RIGHT; |
124 | if (keys[SDLK_RETURN]) keys_out |= GP2X_START; |
125 | if (keys[SDLK_BACKSLASH]) keys_out |= GP2X_SELECT; |
126 | if (keys[SDLK_s]) keys_out |= GP2X_L; |
127 | if (keys[SDLK_d]) keys_out |= GP2X_R; |
128 | if (keys[SDLK_z]) keys_out |= GP2X_A; |
129 | if (keys[SDLK_x]) keys_out |= GP2X_X; |
130 | if (keys[SDLK_c]) keys_out |= GP2X_B; |
131 | if (keys[SDLK_v]) keys_out |= GP2X_Y; |
132 | if (keys[SDLK_q]) keys_out |= GP2X_VOL_DOWN; |
133 | if (keys[SDLK_w]) keys_out |= GP2X_VOL_UP; |
134 | if (keys[SDLK_RIGHTBRACKET]) keys_out |= GP2X_PUSH; |
135 | |
136 | if (allow_usb_joy && num_of_joys > 0) { |
137 | // check the usb joy as well.. |
138 | gp2x_usbjoy_update(); |
139 | for (i = 0; i < num_of_joys; i++) |
140 | keys_out |= gp2x_usbjoy_check(i); |
141 | } |
142 | |
143 | return keys_out; |
144 | } |
145 | |
146 | static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0; |
147 | |
148 | void gp2x_start_sound(int rate, int bits, int stereo) |
149 | { |
150 | int frag = 0, bsize, buffers; |
151 | |
152 | // if no settings change, we don't need to do anything |
153 | if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return; |
154 | |
155 | if (sounddev > 0) close(sounddev); |
156 | sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC); |
157 | if (sounddev == -1) |
158 | { |
159 | printf("open(\"/dev/dsp\") failed with %i\n", errno); |
160 | return; |
161 | } |
162 | |
163 | ioctl(sounddev, SNDCTL_DSP_SPEED, &rate); |
164 | ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits); |
165 | ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo); |
166 | // calculate buffer size |
167 | buffers = 16; |
168 | bsize = rate / 32; |
169 | if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding |
170 | while ((bsize>>=1)) frag++; |
171 | frag |= buffers<<16; // 16 buffers |
172 | ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag); |
173 | printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n", |
174 | rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff)); |
175 | |
176 | s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo; |
177 | usleep(100000); |
178 | } |
179 | |
180 | |
181 | void gp2x_sound_write(void *buff, int len) |
182 | { |
183 | if (sounddev > 0) |
184 | write(sounddev, buff, len); |
185 | } |
186 | |
187 | void gp2x_sound_sync(void) |
188 | { |
189 | if (sounddev > 0) |
190 | ioctl(sounddev, SOUND_PCM_SYNC, 0); |
191 | } |
192 | |
193 | void gp2x_sound_volume(int l, int r) |
194 | { |
195 | } |
196 | |
197 | |
198 | void gp2x_init(void) |
199 | { |
200 | printf("entering init()\n"); fflush(stdout); |
201 | |
47d0839e |
202 | gp2x_screen = malloc(320*240*2 + 32); |
e6ee7529 |
203 | if(gp2x_screen == NULL) return; |
47d0839e |
204 | memset(gp2x_screen, 0, 320*240*2 + 32); |
e6ee7529 |
205 | |
206 | if(SDL_Init(SDL_INIT_NOPARACHUTE)) |
207 | { |
208 | printf("Could not initialize SDL: %s.\n", SDL_GetError()); |
209 | return; |
210 | } |
211 | |
212 | if(SDL_InitSubSystem(SDL_INIT_VIDEO)==-1) |
213 | { |
214 | puts(SDL_GetError()); |
215 | return; |
216 | } |
217 | |
218 | SDL_ShowCursor(0); |
219 | |
220 | gp2x_video_changemode(8); |
221 | |
222 | /* init usb joys -GnoStiC */ |
223 | gp2x_usbjoy_init(); |
224 | |
225 | SDL_PumpEvents(); |
226 | |
227 | printf("gp2x_init done.\n"); |
228 | } |
229 | |
230 | |
231 | char *ext_menu = 0, *ext_state = 0; |
232 | |
233 | void gp2x_deinit(void) |
234 | { |
235 | SDL_QuitSubSystem(SDL_INIT_VIDEO); |
236 | SDL_Quit(); |
237 | |
32a0f49f |
238 | free(gp2x_screen); |
e6ee7529 |
239 | if (sounddev > 0) close(sounddev); |
240 | gp2x_usbjoy_deinit(); |
241 | } |
242 | |
243 | |
244 | /* other stuff to be faked */ |
245 | void cpuctrl_init(void) |
246 | { |
247 | } |
248 | |
249 | void cpuctrl_deinit(void) |
250 | { |
251 | } |
252 | |
253 | void set_FCLK(unsigned MHZ) |
254 | { |
255 | } |
256 | |
257 | void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD) |
258 | { |
259 | } |
260 | |
261 | void set_gamma(int g100) |
262 | { |
263 | } |
264 | |
265 | |
266 | int mmuhack(void) |
267 | { |
268 | return 1; |
269 | } |
270 | |
271 | int mmuunhack(void) |
272 | { |
273 | return 1; |
274 | } |
275 | |
276 | void memset32(int *dest, int c, int count) |
277 | { |
278 | memset(dest, c, count*4); |
279 | } |
280 | |
281 | void spend_cycles(int c) |
282 | { |
283 | usleep(c/200); |
284 | } |
285 | |
47d0839e |
286 | /* don't scale, just convert */ |
e6ee7529 |
287 | void soft_scale(void *dst, unsigned short *pal, int line_offs, int lines) |
288 | { |
47d0839e |
289 | unsigned char *src = (unsigned char *)dst + (line_offs + lines) * 320; |
290 | unsigned short *dest = (unsigned short *)dst + (line_offs + lines) * 320; |
291 | int count = lines*320; |
292 | |
293 | while (count--) |
294 | *(--dest) = pal[*(--src)]; |
e6ee7529 |
295 | } |
296 | |