| 1 | /* |
| 2 | * PicoDrive |
| 3 | * (C) notaz, 2013 |
| 4 | * |
| 5 | * This work is licensed under the terms of MAME license. |
| 6 | * See COPYING file in the top-level directory. |
| 7 | */ |
| 8 | |
| 9 | #include <stdio.h> |
| 10 | |
| 11 | #include "../libpicofe/input.h" |
| 12 | #include "../libpicofe/plat_sdl.h" |
| 13 | #include "../libpicofe/in_sdl.h" |
| 14 | #include "../libpicofe/gl.h" |
| 15 | #include "emu.h" |
| 16 | #include "menu_pico.h" |
| 17 | #include "input_pico.h" |
| 18 | #include "version.h" |
| 19 | |
| 20 | // FIXME: these 2 shouldn't be here |
| 21 | static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)]; |
| 22 | unsigned char *PicoDraw2FB = PicoDraw2FB_; |
| 23 | |
| 24 | static void *shadow_fb; |
| 25 | |
| 26 | static const struct in_default_bind in_sdl_defbinds[] = { |
| 27 | { SDLK_UP, IN_BINDTYPE_PLAYER12, GBTN_UP }, |
| 28 | { SDLK_DOWN, IN_BINDTYPE_PLAYER12, GBTN_DOWN }, |
| 29 | { SDLK_LEFT, IN_BINDTYPE_PLAYER12, GBTN_LEFT }, |
| 30 | { SDLK_RIGHT, IN_BINDTYPE_PLAYER12, GBTN_RIGHT }, |
| 31 | { SDLK_z, IN_BINDTYPE_PLAYER12, GBTN_A }, |
| 32 | { SDLK_x, IN_BINDTYPE_PLAYER12, GBTN_B }, |
| 33 | { SDLK_c, IN_BINDTYPE_PLAYER12, GBTN_C }, |
| 34 | { SDLK_a, IN_BINDTYPE_PLAYER12, GBTN_X }, |
| 35 | { SDLK_s, IN_BINDTYPE_PLAYER12, GBTN_Y }, |
| 36 | { SDLK_d, IN_BINDTYPE_PLAYER12, GBTN_Z }, |
| 37 | { SDLK_RETURN, IN_BINDTYPE_PLAYER12, GBTN_START }, |
| 38 | { SDLK_f, IN_BINDTYPE_PLAYER12, GBTN_MODE }, |
| 39 | { SDLK_ESCAPE, IN_BINDTYPE_EMU, PEVB_MENU }, |
| 40 | { SDLK_F1, IN_BINDTYPE_EMU, PEVB_STATE_SAVE }, |
| 41 | { SDLK_F2, IN_BINDTYPE_EMU, PEVB_STATE_LOAD }, |
| 42 | { SDLK_F3, IN_BINDTYPE_EMU, PEVB_SSLOT_PREV }, |
| 43 | { SDLK_F4, IN_BINDTYPE_EMU, PEVB_SSLOT_NEXT }, |
| 44 | { SDLK_F5, IN_BINDTYPE_EMU, PEVB_SWITCH_RND }, |
| 45 | { SDLK_F6, IN_BINDTYPE_EMU, PEVB_PICO_PPREV }, |
| 46 | { SDLK_F7, IN_BINDTYPE_EMU, PEVB_PICO_PNEXT }, |
| 47 | { SDLK_F8, IN_BINDTYPE_EMU, PEVB_PICO_SWINP }, |
| 48 | { SDLK_BACKSPACE, IN_BINDTYPE_EMU, PEVB_FF }, |
| 49 | { 0, 0, 0 } |
| 50 | }; |
| 51 | |
| 52 | /* YUV stuff */ |
| 53 | static int yuv_ry[32], yuv_gy[32], yuv_by[32]; |
| 54 | static unsigned char yuv_u[32 * 2], yuv_v[32 * 2]; |
| 55 | |
| 56 | void bgr_to_uyvy_init(void) |
| 57 | { |
| 58 | int i, v; |
| 59 | |
| 60 | /* init yuv converter: |
| 61 | y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0)); |
| 62 | y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1)); |
| 63 | u = (int)(8 * 0.565f * (b0 - y0)) + 128; |
| 64 | v = (int)(8 * 0.713f * (r0 - y0)) + 128; |
| 65 | */ |
| 66 | for (i = 0; i < 32; i++) { |
| 67 | yuv_ry[i] = (int)(0.299f * i * 65536.0f + 0.5f); |
| 68 | yuv_gy[i] = (int)(0.587f * i * 65536.0f + 0.5f); |
| 69 | yuv_by[i] = (int)(0.114f * i * 65536.0f + 0.5f); |
| 70 | } |
| 71 | for (i = -32; i < 32; i++) { |
| 72 | v = (int)(8 * 0.565f * i) + 128; |
| 73 | if (v < 0) |
| 74 | v = 0; |
| 75 | if (v > 255) |
| 76 | v = 255; |
| 77 | yuv_u[i + 32] = v; |
| 78 | v = (int)(8 * 0.713f * i) + 128; |
| 79 | if (v < 0) |
| 80 | v = 0; |
| 81 | if (v > 255) |
| 82 | v = 255; |
| 83 | yuv_v[i + 32] = v; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | void rgb565_to_uyvy(void *d, const void *s, int pixels) |
| 88 | { |
| 89 | unsigned int *dst = d; |
| 90 | const unsigned short *src = s; |
| 91 | const unsigned char *yu = yuv_u + 32; |
| 92 | const unsigned char *yv = yuv_v + 32; |
| 93 | int r0, g0, b0, r1, g1, b1; |
| 94 | int y0, y1, u, v; |
| 95 | |
| 96 | for (; pixels > 0; src += 2, dst++, pixels -= 2) |
| 97 | { |
| 98 | r0 = (src[0] >> 11) & 0x1f; |
| 99 | g0 = (src[0] >> 6) & 0x1f; |
| 100 | b0 = src[0] & 0x1f; |
| 101 | r1 = (src[1] >> 11) & 0x1f; |
| 102 | g1 = (src[1] >> 6) & 0x1f; |
| 103 | b1 = src[1] & 0x1f; |
| 104 | y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16; |
| 105 | y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16; |
| 106 | u = yu[b0 - y0]; |
| 107 | v = yv[r0 - y0]; |
| 108 | // valid Y range seems to be 16..235 |
| 109 | y0 = 16 + 219 * y0 / 31; |
| 110 | y1 = 16 + 219 * y1 / 31; |
| 111 | |
| 112 | *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | void plat_video_flip(void) |
| 117 | { |
| 118 | if (plat_sdl_overlay != NULL) { |
| 119 | SDL_Rect dstrect = |
| 120 | { 0, 0, plat_sdl_screen->w, plat_sdl_screen->h }; |
| 121 | |
| 122 | SDL_LockYUVOverlay(plat_sdl_overlay); |
| 123 | rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb, |
| 124 | g_screen_width * g_screen_height); |
| 125 | SDL_UnlockYUVOverlay(plat_sdl_overlay); |
| 126 | SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect); |
| 127 | } |
| 128 | else if (plat_sdl_gl_active) { |
| 129 | gl_flip(shadow_fb, g_screen_width, g_screen_height); |
| 130 | } |
| 131 | else { |
| 132 | // XXX: no locking, but should be fine with SDL_SWSURFACE? |
| 133 | SDL_Flip(plat_sdl_screen); |
| 134 | g_screen_ptr = plat_sdl_screen->pixels; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | void plat_video_wait_vsync(void) |
| 139 | { |
| 140 | } |
| 141 | |
| 142 | void plat_video_menu_enter(int is_rom_loaded) |
| 143 | { |
| 144 | plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h, 0); |
| 145 | } |
| 146 | |
| 147 | void plat_video_menu_begin(void) |
| 148 | { |
| 149 | if (plat_sdl_overlay != NULL || plat_sdl_gl_active) { |
| 150 | g_menuscreen_ptr = shadow_fb; |
| 151 | } |
| 152 | else { |
| 153 | SDL_LockSurface(plat_sdl_screen); |
| 154 | g_menuscreen_ptr = plat_sdl_screen->pixels; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | void plat_video_menu_end(void) |
| 159 | { |
| 160 | if (plat_sdl_overlay != NULL) { |
| 161 | SDL_Rect dstrect = |
| 162 | { 0, 0, plat_sdl_screen->w, plat_sdl_screen->h }; |
| 163 | |
| 164 | SDL_LockYUVOverlay(plat_sdl_overlay); |
| 165 | rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb, |
| 166 | g_menuscreen_w * g_menuscreen_h); |
| 167 | SDL_UnlockYUVOverlay(plat_sdl_overlay); |
| 168 | |
| 169 | SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect); |
| 170 | } |
| 171 | else if (plat_sdl_gl_active) { |
| 172 | gl_flip(g_menuscreen_ptr, g_menuscreen_w, g_menuscreen_h); |
| 173 | } |
| 174 | else { |
| 175 | SDL_UnlockSurface(plat_sdl_screen); |
| 176 | SDL_Flip(plat_sdl_screen); |
| 177 | } |
| 178 | g_menuscreen_ptr = NULL; |
| 179 | |
| 180 | } |
| 181 | |
| 182 | void plat_video_menu_leave(void) |
| 183 | { |
| 184 | } |
| 185 | |
| 186 | void plat_video_loop_prepare(void) |
| 187 | { |
| 188 | plat_sdl_change_video_mode(g_screen_width, g_screen_height, 0); |
| 189 | |
| 190 | if (plat_sdl_overlay != NULL || plat_sdl_gl_active) { |
| 191 | g_screen_ptr = shadow_fb; |
| 192 | } |
| 193 | else { |
| 194 | SDL_LockSurface(plat_sdl_screen); |
| 195 | g_screen_ptr = plat_sdl_screen->pixels; |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | void plat_early_init(void) |
| 200 | { |
| 201 | } |
| 202 | |
| 203 | static void plat_sdl_quit(void) |
| 204 | { |
| 205 | // for now.. |
| 206 | exit(1); |
| 207 | } |
| 208 | |
| 209 | void plat_init(void) |
| 210 | { |
| 211 | int shadow_size; |
| 212 | int ret; |
| 213 | |
| 214 | ret = plat_sdl_init(); |
| 215 | if (ret != 0) |
| 216 | exit(1); |
| 217 | |
| 218 | plat_sdl_quit_cb = plat_sdl_quit; |
| 219 | |
| 220 | SDL_WM_SetCaption("PicoDrive " VERSION, NULL); |
| 221 | |
| 222 | g_menuscreen_w = plat_sdl_screen->w; |
| 223 | g_menuscreen_h = plat_sdl_screen->h; |
| 224 | g_menuscreen_ptr = NULL; |
| 225 | |
| 226 | shadow_size = g_menuscreen_w * g_menuscreen_h * 2; |
| 227 | if (shadow_size < 320 * 480 * 2) |
| 228 | shadow_size = 320 * 480 * 2; |
| 229 | |
| 230 | shadow_fb = malloc(shadow_size); |
| 231 | g_menubg_ptr = malloc(shadow_size); |
| 232 | if (shadow_fb == NULL || g_menubg_ptr == NULL) { |
| 233 | fprintf(stderr, "OOM\n"); |
| 234 | exit(1); |
| 235 | } |
| 236 | |
| 237 | g_screen_width = 320; |
| 238 | g_screen_height = 240; |
| 239 | g_screen_ptr = shadow_fb; |
| 240 | |
| 241 | in_sdl_init(in_sdl_defbinds, plat_sdl_event_handler); |
| 242 | in_probe(); |
| 243 | |
| 244 | bgr_to_uyvy_init(); |
| 245 | } |
| 246 | |
| 247 | void plat_finish(void) |
| 248 | { |
| 249 | free(shadow_fb); |
| 250 | shadow_fb = NULL; |
| 251 | free(g_menubg_ptr); |
| 252 | g_menubg_ptr = NULL; |
| 253 | plat_sdl_finish(); |
| 254 | } |