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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" |
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16 | #include "../gp2x/cpuctrl.h" |
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17 | |
18 | SDL_Surface *screen; |
19 | void *gp2x_screen; |
20 | static int sounddev = 0; |
21 | |
22 | |
23 | /* video stuff */ |
24 | void gp2x_video_flip(void) |
25 | { |
26 | if(SDL_MUSTLOCK(screen)) |
27 | SDL_LockSurface(screen); |
28 | |
29 | memcpy(screen->pixels, gp2x_screen, 320*240*screen->format->BytesPerPixel); |
30 | |
31 | if(SDL_MUSTLOCK(screen)) |
32 | SDL_UnlockSurface(screen); |
33 | |
34 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
35 | } |
36 | |
37 | |
38 | void gp2x_video_changemode2(int bpp) |
39 | { |
40 | const SDL_VideoInfo *vinf; |
41 | int flags=0; |
42 | |
43 | vinf=SDL_GetVideoInfo(); |
44 | |
45 | if(vinf->hw_available) |
46 | flags|=SDL_HWSURFACE; |
47 | |
48 | if (bpp == 8) |
49 | flags|=SDL_HWPALETTE; |
50 | |
51 | screen = SDL_SetVideoMode(320, 240, bpp, flags); |
52 | if(!screen) |
53 | { |
54 | puts(SDL_GetError()); |
55 | return; |
56 | } |
57 | |
58 | SDL_WM_SetCaption("FCE Ultra","FCE Ultra"); |
59 | } |
60 | |
61 | |
62 | static SDL_Color psdl[256]; |
63 | |
64 | void gp2x_video_changemode(int bpp) |
65 | { |
66 | gp2x_video_changemode2(bpp); |
67 | if (bpp == 8) |
68 | SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,256); |
69 | gp2x_video_flip(); |
70 | } |
71 | |
72 | |
73 | void gp2x_video_setpalette(int *pal, int len) |
74 | { |
75 | int i; |
76 | |
77 | for (i = 0; i < len; i++) |
78 | { |
79 | psdl[i].r = pal[i] >> 16; |
80 | psdl[i].g = pal[i] >> 8; |
81 | psdl[i].b = pal[i]; |
82 | } |
83 | |
84 | SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,len); |
85 | } |
86 | |
87 | |
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88 | void gp2x_video_RGB_setscaling(int W, int H) |
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89 | { |
90 | } |
91 | |
92 | void gp2x_video_set_offs(int offs) |
93 | { |
94 | } |
95 | |
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96 | void gp2x_video_flush_cache(void) |
97 | { |
98 | } |
99 | |
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100 | void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len) |
101 | { |
102 | } |
103 | |
104 | |
105 | void gp2x_memcpy_all_buffers(void *data, int offset, int len) |
106 | { |
107 | } |
108 | |
109 | |
110 | void gp2x_memset_all_buffers(int offset, int byte, int len) |
111 | { |
112 | memset((char *)gp2x_screen + offset, byte, len); |
113 | } |
114 | |
115 | |
116 | unsigned long gp2x_joystick_read(int allow_usb_joy) |
117 | { |
118 | unsigned long keys_out = 0; |
119 | Uint8 *keys; |
120 | int i; |
121 | |
122 | SDL_PumpEvents(); |
123 | keys = SDL_GetKeyState(NULL); |
124 | |
125 | if (keys[SDLK_UP]) keys_out |= GP2X_UP; |
126 | if (keys[SDLK_LEFT]) keys_out |= GP2X_LEFT; |
127 | if (keys[SDLK_DOWN]) keys_out |= GP2X_DOWN; |
128 | if (keys[SDLK_RIGHT]) keys_out |= GP2X_RIGHT; |
129 | if (keys[SDLK_RETURN]) keys_out |= GP2X_START; |
130 | if (keys[SDLK_BACKSLASH]) keys_out |= GP2X_SELECT; |
131 | if (keys[SDLK_s]) keys_out |= GP2X_L; |
132 | if (keys[SDLK_d]) keys_out |= GP2X_R; |
133 | if (keys[SDLK_z]) keys_out |= GP2X_A; |
134 | if (keys[SDLK_x]) keys_out |= GP2X_X; |
135 | if (keys[SDLK_c]) keys_out |= GP2X_B; |
136 | if (keys[SDLK_v]) keys_out |= GP2X_Y; |
137 | if (keys[SDLK_q]) keys_out |= GP2X_VOL_DOWN; |
138 | if (keys[SDLK_w]) keys_out |= GP2X_VOL_UP; |
139 | if (keys[SDLK_RIGHTBRACKET]) keys_out |= GP2X_PUSH; |
140 | |
141 | if (allow_usb_joy && num_of_joys > 0) { |
142 | // check the usb joy as well.. |
143 | gp2x_usbjoy_update(); |
144 | for (i = 0; i < num_of_joys; i++) |
145 | keys_out |= gp2x_usbjoy_check(i); |
146 | } |
147 | |
148 | return keys_out; |
149 | } |
150 | |
151 | static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0; |
152 | |
153 | void gp2x_start_sound(int rate, int bits, int stereo) |
154 | { |
155 | int frag = 0, bsize, buffers; |
156 | |
157 | // if no settings change, we don't need to do anything |
158 | if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return; |
159 | |
160 | if (sounddev > 0) close(sounddev); |
161 | sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC); |
162 | if (sounddev == -1) |
163 | { |
164 | printf("open(\"/dev/dsp\") failed with %i\n", errno); |
165 | return; |
166 | } |
167 | |
168 | ioctl(sounddev, SNDCTL_DSP_SPEED, &rate); |
169 | ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits); |
170 | ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo); |
171 | // calculate buffer size |
172 | buffers = 16; |
173 | bsize = rate / 32; |
174 | if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding |
175 | while ((bsize>>=1)) frag++; |
176 | frag |= buffers<<16; // 16 buffers |
177 | ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag); |
178 | printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n", |
179 | rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff)); |
180 | |
181 | s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo; |
182 | usleep(100000); |
183 | } |
184 | |
185 | |
186 | void gp2x_sound_write(void *buff, int len) |
187 | { |
188 | if (sounddev > 0) |
189 | write(sounddev, buff, len); |
190 | } |
191 | |
192 | void gp2x_sound_sync(void) |
193 | { |
194 | if (sounddev > 0) |
195 | ioctl(sounddev, SOUND_PCM_SYNC, 0); |
196 | } |
197 | |
198 | void gp2x_sound_volume(int l, int r) |
199 | { |
200 | } |
201 | |
202 | |
203 | void gp2x_init(void) |
204 | { |
205 | printf("entering init()\n"); fflush(stdout); |
206 | |
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207 | gp2x_screen = malloc(320*240*2 + 32); |
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208 | if(gp2x_screen == NULL) return; |
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209 | memset(gp2x_screen, 0, 320*240*2 + 32); |
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210 | |
211 | if(SDL_Init(SDL_INIT_NOPARACHUTE)) |
212 | { |
213 | printf("Could not initialize SDL: %s.\n", SDL_GetError()); |
214 | return; |
215 | } |
216 | |
217 | if(SDL_InitSubSystem(SDL_INIT_VIDEO)==-1) |
218 | { |
219 | puts(SDL_GetError()); |
220 | return; |
221 | } |
222 | |
223 | SDL_ShowCursor(0); |
224 | |
225 | gp2x_video_changemode(8); |
226 | |
227 | /* init usb joys -GnoStiC */ |
228 | gp2x_usbjoy_init(); |
229 | |
230 | SDL_PumpEvents(); |
231 | |
232 | printf("gp2x_init done.\n"); |
233 | } |
234 | |
235 | |
236 | char *ext_menu = 0, *ext_state = 0; |
237 | |
238 | void gp2x_deinit(void) |
239 | { |
240 | SDL_QuitSubSystem(SDL_INIT_VIDEO); |
241 | SDL_Quit(); |
242 | |
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243 | free(gp2x_screen); |
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244 | if (sounddev > 0) close(sounddev); |
245 | gp2x_usbjoy_deinit(); |
246 | } |
247 | |
248 | |
249 | /* other stuff to be faked */ |
250 | void cpuctrl_init(void) |
251 | { |
252 | } |
253 | |
254 | void cpuctrl_deinit(void) |
255 | { |
256 | } |
257 | |
258 | void set_FCLK(unsigned MHZ) |
259 | { |
260 | } |
261 | |
262 | void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD) |
263 | { |
264 | } |
265 | |
266 | void set_gamma(int g100) |
267 | { |
268 | } |
269 | |
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270 | void set_LCD_custom_rate(lcd_rate_t rate) |
271 | { |
272 | } |
273 | |
274 | void unset_LCD_custom_rate(void) |
275 | { |
276 | } |
277 | |
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278 | |
279 | int mmuhack(void) |
280 | { |
281 | return 1; |
282 | } |
283 | |
284 | int mmuunhack(void) |
285 | { |
286 | return 1; |
287 | } |
288 | |
289 | void memset32(int *dest, int c, int count) |
290 | { |
291 | memset(dest, c, count*4); |
292 | } |
293 | |
294 | void spend_cycles(int c) |
295 | { |
296 | usleep(c/200); |
297 | } |
298 | |
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299 | void convert2RGB555(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) |
300 | { |
301 | while (count--) |
302 | *dst++ = pal[*src++]; |
303 | } |
304 | |
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305 | /* don't scale, just convert */ |
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306 | void soft_scale(void *dst, unsigned short *pal, int line_offs, int lines) |
307 | { |
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308 | unsigned char *src = (unsigned char *)dst + (line_offs + lines) * 320; |
309 | unsigned short *dest = (unsigned short *)dst + (line_offs + lines) * 320; |
310 | int count = lines*320; |
311 | |
312 | while (count--) |
313 | *(--dest) = pal[*(--src)]; |
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314 | } |
315 | |