X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fsdl%2Fminimal.c;fp=drivers%2Fsdl%2Fminimal.c;h=57c98f60803f0902c201145fdcd4435c3d953721;hb=4a2a617ac879a95babe3b8a822188b71e9769ba4;hp=0000000000000000000000000000000000000000;hpb=396c448eb538587248ddbf586a90371c71b48183;p=fceu.git diff --git a/drivers/sdl/minimal.c b/drivers/sdl/minimal.c new file mode 100644 index 0000000..57c98f6 --- /dev/null +++ b/drivers/sdl/minimal.c @@ -0,0 +1,315 @@ +/* emulate minimal lib using SDL */ + +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "../gp2x/minimal.h" +#include "../gp2x/usbjoy.h" +#include "../gp2x/cpuctrl.h" + +SDL_Surface *screen; +void *gp2x_screen; +static int sounddev = 0; + + +/* video stuff */ +void gp2x_video_flip(void) +{ + if(SDL_MUSTLOCK(screen)) + SDL_LockSurface(screen); + + memcpy(screen->pixels, gp2x_screen, 320*240*screen->format->BytesPerPixel); + + if(SDL_MUSTLOCK(screen)) + SDL_UnlockSurface(screen); + + SDL_UpdateRect(screen, 0, 0, 0, 0); +} + + +void gp2x_video_changemode2(int bpp) +{ + const SDL_VideoInfo *vinf; + int flags=0; + + vinf=SDL_GetVideoInfo(); + + if(vinf->hw_available) + flags|=SDL_HWSURFACE; + + if (bpp == 8) + flags|=SDL_HWPALETTE; + + screen = SDL_SetVideoMode(320, 240, bpp, flags); + if(!screen) + { + puts(SDL_GetError()); + return; + } + + SDL_WM_SetCaption("FCE Ultra","FCE Ultra"); +} + + +static SDL_Color psdl[256]; + +void gp2x_video_changemode(int bpp) +{ + gp2x_video_changemode2(bpp); + if (bpp == 8) + SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,256); + gp2x_video_flip(); +} + + +void gp2x_video_setpalette(int *pal, int len) +{ + int i; + + for (i = 0; i < len; i++) + { + psdl[i].r = pal[i] >> 16; + psdl[i].g = pal[i] >> 8; + psdl[i].b = pal[i]; + } + + SDL_SetPalette(screen,SDL_PHYSPAL,psdl,0,len); +} + + +void gp2x_video_RGB_setscaling(int W, int H) +{ +} + +void gp2x_video_set_offs(int offs) +{ +} + +void gp2x_video_flush_cache(void) +{ +} + +void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len) +{ +} + + +void gp2x_memcpy_all_buffers(void *data, int offset, int len) +{ +} + + +void gp2x_memset_all_buffers(int offset, int byte, int len) +{ + memset((char *)gp2x_screen + offset, byte, len); +} + + +unsigned long gp2x_joystick_read(int allow_usb_joy) +{ + unsigned long keys_out = 0; + Uint8 *keys; + int i; + + SDL_PumpEvents(); + keys = SDL_GetKeyState(NULL); + + if (keys[SDLK_UP]) keys_out |= GP2X_UP; + if (keys[SDLK_LEFT]) keys_out |= GP2X_LEFT; + if (keys[SDLK_DOWN]) keys_out |= GP2X_DOWN; + if (keys[SDLK_RIGHT]) keys_out |= GP2X_RIGHT; + if (keys[SDLK_RETURN]) keys_out |= GP2X_START; + if (keys[SDLK_BACKSLASH]) keys_out |= GP2X_SELECT; + if (keys[SDLK_s]) keys_out |= GP2X_L; + if (keys[SDLK_d]) keys_out |= GP2X_R; + if (keys[SDLK_z]) keys_out |= GP2X_A; + if (keys[SDLK_x]) keys_out |= GP2X_X; + if (keys[SDLK_c]) keys_out |= GP2X_B; + if (keys[SDLK_v]) keys_out |= GP2X_Y; + if (keys[SDLK_q]) keys_out |= GP2X_VOL_DOWN; + if (keys[SDLK_w]) keys_out |= GP2X_VOL_UP; + if (keys[SDLK_RIGHTBRACKET]) keys_out |= GP2X_PUSH; + + if (allow_usb_joy && num_of_joys > 0) { + // check the usb joy as well.. + gp2x_usbjoy_update(); + for (i = 0; i < num_of_joys; i++) + keys_out |= gp2x_usbjoy_check(i); + } + + return keys_out; +} + +static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0; + +void gp2x_start_sound(int rate, int bits, int stereo) +{ + int frag = 0, bsize, buffers; + + // if no settings change, we don't need to do anything + if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return; + + if (sounddev > 0) close(sounddev); + sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC); + if (sounddev == -1) + { + printf("open(\"/dev/dsp\") failed with %i\n", errno); + return; + } + + ioctl(sounddev, SNDCTL_DSP_SPEED, &rate); + ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits); + ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo); + // calculate buffer size + buffers = 16; + bsize = rate / 32; + if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding + while ((bsize>>=1)) frag++; + frag |= buffers<<16; // 16 buffers + ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag); + printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n", + rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff)); + + s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo; + usleep(100000); +} + + +void gp2x_sound_write(void *buff, int len) +{ + if (sounddev > 0) + write(sounddev, buff, len); +} + +void gp2x_sound_sync(void) +{ + if (sounddev > 0) + ioctl(sounddev, SOUND_PCM_SYNC, 0); +} + +void gp2x_sound_volume(int l, int r) +{ +} + + +void gp2x_init(void) +{ + printf("entering init()\n"); fflush(stdout); + + gp2x_screen = malloc(320*240*2 + 32); + if(gp2x_screen == NULL) return; + memset(gp2x_screen, 0, 320*240*2 + 32); + + if(SDL_Init(SDL_INIT_NOPARACHUTE)) + { + printf("Could not initialize SDL: %s.\n", SDL_GetError()); + return; + } + + if(SDL_InitSubSystem(SDL_INIT_VIDEO)==-1) + { + puts(SDL_GetError()); + return; + } + + SDL_ShowCursor(0); + + gp2x_video_changemode(8); + + /* init usb joys -GnoStiC */ + gp2x_usbjoy_init(); + + SDL_PumpEvents(); + + printf("gp2x_init done.\n"); +} + + +char *ext_menu = 0, *ext_state = 0; + +void gp2x_deinit(void) +{ + SDL_QuitSubSystem(SDL_INIT_VIDEO); + SDL_Quit(); + + free(gp2x_screen); + if (sounddev > 0) close(sounddev); + gp2x_usbjoy_deinit(); +} + + +/* other stuff to be faked */ +void cpuctrl_init(void) +{ +} + +void cpuctrl_deinit(void) +{ +} + +void set_FCLK(unsigned MHZ) +{ +} + +void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD) +{ +} + +void set_gamma(int g100) +{ +} + +void set_LCD_custom_rate(lcd_rate_t rate) +{ +} + +void unset_LCD_custom_rate(void) +{ +} + + +int mmuhack(void) +{ + return 1; +} + +int mmuunhack(void) +{ + return 1; +} + +void memset32(int *dest, int c, int count) +{ + memset(dest, c, count*4); +} + +void spend_cycles(int c) +{ + usleep(c/200); +} + +void convert2RGB555(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) +{ + while (count--) + *dst++ = pal[*src++]; +} + +/* don't scale, just convert */ +void soft_scale(void *dst, unsigned short *pal, int line_offs, int lines) +{ + unsigned char *src = (unsigned char *)dst + (line_offs + lines) * 320; + unsigned short *dest = (unsigned short *)dst + (line_offs + lines) * 320; + int count = lines*320; + + while (count--) + *(--dest) = pal[*(--src)]; +} +