1 /* emulate minimal lib using SDL */
10 #include <sys/ioctl.h>
11 #include <sys/soundcard.h>
14 #include "../gp2x/minimal.h"
15 #include "../gp2x/usbjoy.h"
19 static int sounddev = 0;
23 void gp2x_video_flip(void)
25 if(SDL_MUSTLOCK(screen))
26 SDL_LockSurface(screen);
28 memcpy(screen->pixels, gp2x_screen, 320*240*screen->format->BytesPerPixel);
30 if(SDL_MUSTLOCK(screen))
31 SDL_UnlockSurface(screen);
33 SDL_UpdateRect(screen, 0, 0, 0, 0);
37 void gp2x_video_changemode2(int bpp)
39 const SDL_VideoInfo *vinf;
42 vinf=SDL_GetVideoInfo();
44 if(vinf->hw_available)
50 screen = SDL_SetVideoMode(320, 240, bpp, flags);
57 SDL_WM_SetCaption("FCE Ultra","FCE Ultra");
61 static SDL_Color psdl[256];
63 void gp2x_video_changemode(int bpp)
65 gp2x_video_changemode2(bpp);
67 SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,256);
72 void gp2x_video_setpalette(int *pal, int len)
76 for (i = 0; i < len; i++)
78 psdl[i].r = pal[i] >> 16;
79 psdl[i].g = pal[i] >> 8;
83 SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,len);
87 void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
91 void gp2x_video_set_offs(int offs)
95 void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
100 void gp2x_memcpy_all_buffers(void *data, int offset, int len)
105 void gp2x_memset_all_buffers(int offset, int byte, int len)
107 memset((char *)gp2x_screen + offset, byte, len);
111 unsigned long gp2x_joystick_read(int allow_usb_joy)
113 unsigned long keys_out = 0;
118 keys = SDL_GetKeyState(NULL);
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;
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);
146 static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
148 void gp2x_start_sound(int rate, int bits, int stereo)
150 int frag = 0, bsize, buffers;
152 // if no settings change, we don't need to do anything
153 if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;
155 if (sounddev > 0) close(sounddev);
156 sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC);
159 printf("open(\"/dev/dsp\") failed with %i\n", errno);
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
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));
176 s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
181 void gp2x_sound_write(void *buff, int len)
184 write(sounddev, buff, len);
187 void gp2x_sound_sync(void)
190 ioctl(sounddev, SOUND_PCM_SYNC, 0);
193 void gp2x_sound_volume(int l, int r)
200 printf("entering init()\n"); fflush(stdout);
202 gp2x_screen = malloc(320*240*2 + 32);
203 if(gp2x_screen == NULL) return;
204 memset(gp2x_screen, 0, 320*240*2 + 32);
206 if(SDL_Init(SDL_INIT_NOPARACHUTE))
208 printf("Could not initialize SDL: %s.\n", SDL_GetError());
212 if(SDL_InitSubSystem(SDL_INIT_VIDEO)==-1)
214 puts(SDL_GetError());
220 gp2x_video_changemode(8);
222 /* init usb joys -GnoStiC */
227 printf("gp2x_init done.\n");
231 char *ext_menu = 0, *ext_state = 0;
233 void gp2x_deinit(void)
235 SDL_QuitSubSystem(SDL_INIT_VIDEO);
239 if (sounddev > 0) close(sounddev);
240 gp2x_usbjoy_deinit();
244 /* other stuff to be faked */
245 void cpuctrl_init(void)
249 void cpuctrl_deinit(void)
253 void set_FCLK(unsigned MHZ)
257 void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
261 void set_gamma(int g100)
276 void memset32(int *dest, int c, int count)
278 memset(dest, c, count*4);
281 void spend_cycles(int c)
286 /* don't scale, just convert */
287 void soft_scale(void *dst, unsigned short *pal, int line_offs, int lines)
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;
294 *(--dest) = pal[*(--src)];