/* * Display_SDL.i - C64 graphics display, emulator window handling, * SDL specific stuff * * Frodo (C) 1994-1997,2002 Christian Bauer */ #include "C64.h" #include "SAM.h" #include "Version.h" #include // Display surface SDL_Surface *screen = NULL; SDL_Surface *real_screen = NULL; // Keyboard static bool num_locked = false; #if defined(DO_ERROR_BLINK) // For LED error blinking static C64Display *c64_disp; static struct sigaction pulse_sa; static itimerval pulse_tv; #endif // Colors for speedometer/drive LEDs enum { black = 0, white = 1, fill_gray = 16, shine_gray = 17, shadow_gray = 18, red = 19, green = 20, PALETTE_SIZE = 21 }; /* C64 keyboard matrix: Bit 7 6 5 4 3 2 1 0 0 CUD F5 F3 F1 F7 CLR RET DEL 1 SHL E S Z 4 A W 3 2 X T F C 6 D R 5 3 V U H B 8 G Y 7 4 N O K M 0 J I 9 5 , @ : . - L P + 6 / ^ = SHR HOM ; * � 7 R/S Q C= SPC 2 CTL <- 1 */ #define MATRIX(a,b) (((a) << 3) | (b)) /* * Open window */ int init_graphics(void) { Uint32 rmask, gmask, bmask, amask; /* SDL interprets each pixel as a 32-bit number, so our masks must depend on the endianness (byte order) of the machine */ #if SDL_BYTEORDER == SDL_BIG_ENDIAN rmask = 0xff000000; gmask = 0x00ff0000; bmask = 0x0000ff00; amask = 0x000000ff; #else rmask = 0x000000ff; gmask = 0x0000ff00; bmask = 0x00ff0000; amask = 0xff000000; #endif // Open window SDL_WM_SetCaption(VERSION_STRING, "Frodo"); SDL_ShowCursor(SDL_DISABLE); screen = SDL_CreateRGBSurface(SDL_SWSURFACE, DISPLAY_X, DISPLAY_Y + 17, 8, rmask, gmask, bmask, amask); if (!screen) { fprintf(stderr, "Cannot allocate surface to draw on: %s\n", SDL_GetError); exit(1); } real_screen = SDL_SetVideoMode(FULL_DISPLAY_X, FULL_DISPLAY_Y, 8, SDL_DOUBLEBUF); if (!real_screen) { fprintf(stderr, "\n\nCannot initialize video: %s\n", SDL_GetError()); exit(1); } return 1; } /* * Display constructor */ C64Display::C64Display(C64 *the_c64) : TheC64(the_c64) { quit_requested = false; speedometer_string[0] = 0; // LEDs off for (int i=0; i<4; i++) led_state[i] = old_led_state[i] = LED_OFF; #if defined(DO_ERROR_BLINK) // Start timer for LED error blinking c64_disp = this; pulse_sa.sa_handler = (void (*)(int))pulse_handler; pulse_sa.sa_flags = 0; sigemptyset(&pulse_sa.sa_mask); sigaction(SIGALRM, &pulse_sa, NULL); pulse_tv.it_interval.tv_sec = 0; pulse_tv.it_interval.tv_usec = 400000; pulse_tv.it_value.tv_sec = 0; pulse_tv.it_value.tv_usec = 400000; setitimer(ITIMER_REAL, &pulse_tv, NULL); #endif } /* * Display destructor */ C64Display::~C64Display() { SDL_Quit(); } /* * Prefs may have changed */ void C64Display::NewPrefs(Prefs *prefs) { } /* * Redraw bitmap */ void C64Display::Update(void) { // Update display SDL_Rect srcrect, dstrect; if (ThePrefs.DisplayOption == 0) { const int x_border = (DISPLAY_X - FULL_DISPLAY_X / 2) / 2; const int y_border = (DISPLAY_Y - FULL_DISPLAY_Y / 2) / 2; /* Center, double size */ srcrect = (SDL_Rect){x_border, y_border, FULL_DISPLAY_X / 2, FULL_DISPLAY_Y / 2}; dstrect = (SDL_Rect){0, 0, FULL_DISPLAY_X, FULL_DISPLAY_Y}; } else { /* Stretch */ srcrect = (SDL_Rect){0, 0, DISPLAY_X, DISPLAY_Y}; dstrect = (SDL_Rect){0, 0, FULL_DISPLAY_X, FULL_DISPLAY_Y}; } SDL_SoftStretch(screen, &srcrect, real_screen, &dstrect); SDL_Flip(real_screen); } /* * Draw string into surface using the C64 ROM font */ void C64Display::draw_string(SDL_Surface *s, int x, int y, const char *str, uint8 front_color, uint8 back_color) { uint8 *pb = (uint8 *)s->pixels + s->pitch*y + x; char c; while ((c = *str++) != 0) { uint8 *q = TheC64->Char + c*8 + 0x800; uint8 *p = pb; for (int y=0; y<8; y++) { uint8 v = *q++; p[0] = (v & 0x80) ? front_color : back_color; p[1] = (v & 0x40) ? front_color : back_color; p[2] = (v & 0x20) ? front_color : back_color; p[3] = (v & 0x10) ? front_color : back_color; p[4] = (v & 0x08) ? front_color : back_color; p[5] = (v & 0x04) ? front_color : back_color; p[6] = (v & 0x02) ? front_color : back_color; p[7] = (v & 0x01) ? front_color : back_color; p += s->pitch; } pb += 8; } } /* * LED error blink */ #if defined(DO_ERROR_BLINK) void C64Display::pulse_handler(...) { for (int i=0; i<4; i++) switch (c64_disp->led_state[i]) { case LED_ERROR_ON: c64_disp->led_state[i] = LED_ERROR_OFF; break; case LED_ERROR_OFF: c64_disp->led_state[i] = LED_ERROR_ON; break; } } #endif /* * Draw speedometer */ void C64Display::Speedometer(int speed) { static int delay = 0; if (delay >= 20) { delay = 0; sprintf(speedometer_string, "%d%%", speed); } else delay++; } /* * Return pointer to bitmap data */ uint8 *C64Display::BitmapBase(void) { return (uint8 *)screen->pixels; } /* * Return number of bytes per row */ int C64Display::BitmapXMod(void) { return screen->pitch; } void C64Display::FakeKeyPress(int kc, bool shift, uint8 *CIA_key_matrix, uint8 *CIA_rev_matrix) { // Clear matrices for (int i = 0; i < 8; i ++) { CIA_key_matrix[i] = 0xFF; CIA_rev_matrix[i] = 0xFF; } if (shift) { CIA_key_matrix[6] &= 0xef; CIA_rev_matrix[4] &= 0xbf; } if (kc != -1) { int c64_byte, c64_bit, shifted; c64_byte = kc >> 3; c64_bit = kc & 7; shifted = kc & 128; c64_byte &= 7; if (shifted) { CIA_key_matrix[6] &= 0xef; CIA_rev_matrix[4] &= 0xbf; } CIA_key_matrix[c64_byte] &= ~(1 << c64_bit); CIA_rev_matrix[c64_bit] &= ~(1 << c64_byte); } } void C64Display::UpdateKeyMatrix(int c64_key, bool key_up, uint8 *key_matrix, uint8 *rev_matrix) { bool shifted = c64_key & 0x80; int c64_byte = (c64_key >> 3) & 7; int c64_bit = c64_key & 7; if (key_up) { if (shifted) { key_matrix[6] |= 0x10; rev_matrix[4] |= 0x40; } key_matrix[c64_byte] |= (1 << c64_bit); rev_matrix[c64_bit] |= (1 << c64_byte); } else { if (shifted) { key_matrix[6] &= 0xef; rev_matrix[4] &= 0xbf; } key_matrix[c64_byte] &= ~(1 << c64_bit); rev_matrix[c64_bit] &= ~(1 << c64_byte); } } /* * Poll the keyboard */ void C64Display::TranslateKey(SDLKey key, bool key_up, uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick) { int c64_key = -1; switch (key) { case SDLK_a: c64_key = MATRIX(1,2); break; case SDLK_b: c64_key = MATRIX(3,4); break; case SDLK_c: c64_key = MATRIX(2,4); break; case SDLK_d: c64_key = MATRIX(2,2); break; case SDLK_e: c64_key = MATRIX(1,6); break; case SDLK_f: c64_key = MATRIX(2,5); break; case SDLK_g: c64_key = MATRIX(3,2); break; case SDLK_h: c64_key = MATRIX(3,5); break; case SDLK_i: c64_key = MATRIX(4,1); break; case SDLK_j: c64_key = MATRIX(4,2); break; case SDLK_k: c64_key = MATRIX(4,5); break; case SDLK_l: c64_key = MATRIX(5,2); break; case SDLK_m: c64_key = MATRIX(4,4); break; case SDLK_n: c64_key = MATRIX(4,7); break; case SDLK_o: c64_key = MATRIX(4,6); break; case SDLK_p: c64_key = MATRIX(5,1); break; case SDLK_q: c64_key = MATRIX(7,6); break; case SDLK_r: c64_key = MATRIX(2,1); break; case SDLK_s: c64_key = MATRIX(1,5); break; case SDLK_t: c64_key = MATRIX(2,6); break; case SDLK_u: c64_key = MATRIX(3,6); break; case SDLK_v: c64_key = MATRIX(3,7); break; case SDLK_w: c64_key = MATRIX(1,1); break; case SDLK_x: c64_key = MATRIX(2,7); break; case SDLK_y: c64_key = MATRIX(3,1); break; case SDLK_z: c64_key = MATRIX(1,4); break; case SDLK_0: c64_key = MATRIX(4,3); break; case SDLK_1: c64_key = MATRIX(7,0); break; case SDLK_2: c64_key = MATRIX(7,3); break; case SDLK_3: c64_key = MATRIX(1,0); break; case SDLK_4: c64_key = MATRIX(1,3); break; case SDLK_5: c64_key = MATRIX(2,0); break; case SDLK_6: c64_key = MATRIX(2,3); break; case SDLK_7: c64_key = MATRIX(3,0); break; case SDLK_8: c64_key = MATRIX(3,3); break; case SDLK_9: c64_key = MATRIX(4,0); break; case SDLK_SPACE: c64_key = MATRIX(7,4); break; case SDLK_BACKQUOTE: c64_key = MATRIX(7,1); break; case SDLK_BACKSLASH: c64_key = MATRIX(6,6); break; case SDLK_COMMA: c64_key = MATRIX(5,7); break; case SDLK_PERIOD: c64_key = MATRIX(5,4); break; case SDLK_MINUS: c64_key = MATRIX(5,0); break; case SDLK_EQUALS: c64_key = MATRIX(5,3); break; case SDLK_LEFTBRACKET: c64_key = MATRIX(5,6); break; case SDLK_RIGHTBRACKET: c64_key = MATRIX(6,1); break; case SDLK_SEMICOLON: c64_key = MATRIX(5,5); break; case SDLK_QUOTE: c64_key = MATRIX(6,2); break; case SDLK_SLASH: c64_key = MATRIX(6,7); break; case SDLK_ESCAPE: c64_key = MATRIX(7,7); break; case SDLK_RETURN: c64_key = MATRIX(0,1); break; case SDLK_BACKSPACE: case SDLK_DELETE: c64_key = MATRIX(0,0); break; case SDLK_INSERT: c64_key = MATRIX(6,3); break; case SDLK_HOME: c64_key = MATRIX(6,3); break; case SDLK_END: c64_key = MATRIX(6,0); break; case SDLK_PAGEUP: c64_key = MATRIX(6,0); break; case SDLK_PAGEDOWN: c64_key = MATRIX(6,5); break; case SDLK_LCTRL: case SDLK_TAB: c64_key = MATRIX(7,2); break; case SDLK_RCTRL: c64_key = MATRIX(7,5); break; case SDLK_LSHIFT: c64_key = MATRIX(1,7); break; case SDLK_RSHIFT: c64_key = MATRIX(6,4); break; case SDLK_LALT: case SDLK_LMETA: c64_key = MATRIX(7,5); break; case SDLK_RALT: case SDLK_RMETA: c64_key = MATRIX(7,5); break; case SDLK_UP: c64_key = MATRIX(0,7)| 0x80; break; case SDLK_DOWN: c64_key = MATRIX(0,7); break; case SDLK_LEFT: c64_key = MATRIX(0,2) | 0x80; break; case SDLK_RIGHT: c64_key = MATRIX(0,2); break; case SDLK_F1: c64_key = MATRIX(0,4); break; case SDLK_F2: c64_key = MATRIX(0,4) | 0x80; break; case SDLK_F3: c64_key = MATRIX(0,5); break; case SDLK_F4: c64_key = MATRIX(0,5) | 0x80; break; case SDLK_F5: c64_key = MATRIX(0,6); break; case SDLK_F6: c64_key = MATRIX(0,6) | 0x80; break; case SDLK_F7: c64_key = MATRIX(0,3); break; case SDLK_F8: c64_key = MATRIX(0,3) | 0x80; break; case SDLK_KP0: case SDLK_KP5: c64_key = 0x10 | 0x40; break; case SDLK_KP1: c64_key = 0x06 | 0x40; break; case SDLK_KP2: c64_key = 0x02 | 0x40; break; case SDLK_KP3: c64_key = 0x0a | 0x40; break; case SDLK_KP4: c64_key = 0x04 | 0x40; break; case SDLK_KP6: c64_key = 0x08 | 0x40; break; case SDLK_KP7: c64_key = 0x05 | 0x40; break; case SDLK_KP8: c64_key = 0x01 | 0x40; break; case SDLK_KP9: c64_key = 0x09 | 0x40; break; case SDLK_KP_DIVIDE: c64_key = MATRIX(6,7); break; case SDLK_KP_ENTER: c64_key = MATRIX(0,1); break; default: break; } if (c64_key < 0) return; // Handle joystick emulation if (c64_key & 0x40) { c64_key &= 0x1f; if (key_up) *joystick |= c64_key; else *joystick &= ~c64_key; return; } this->UpdateKeyMatrix(c64_key, key_up, key_matrix, rev_matrix); } void C64Display::PollKeyboard(uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick) { SDL_Event event; while (SDL_PollEvent(&event)) { switch (event.type) { // Key pressed case SDL_KEYDOWN: switch (event.key.keysym.sym) { case SDLK_F9: // F9: Invoke SAM SAM(TheC64); break; case SDLK_F10: // F10: Quit quit_requested = true; break; case SDLK_F11: // F11: NMI (Restore) TheC64->NMI(); break; case SDLK_F12: // F12: Reset TheC64->Reset(); break; case SDLK_HOME: // Home: Pause and enter menu TheC64->enter_menu(); break; case SDLK_NUMLOCK: num_locked = true; break; case SDLK_KP_PLUS: // '+' on keypad: Increase SkipFrames ThePrefs.SkipFrames++; break; case SDLK_KP_MINUS: // '-' on keypad: Decrease SkipFrames if (ThePrefs.SkipFrames > 1) ThePrefs.SkipFrames--; break; case SDLK_KP_MULTIPLY: // '*' on keypad: Toggle speed limiter ThePrefs.LimitSpeed = !ThePrefs.LimitSpeed; break; default: TranslateKey(event.key.keysym.sym, false, key_matrix, rev_matrix, joystick); break; } break; // Key released case SDL_KEYUP: if (event.key.keysym.sym == SDLK_NUMLOCK) num_locked = false; else TranslateKey(event.key.keysym.sym, true, key_matrix, rev_matrix, joystick); break; // Quit Frodo case SDL_QUIT: quit_requested = true; break; } } } /* * Check if NumLock is down (for switching the joystick keyboard emulation) */ bool C64Display::NumLock(void) { return num_locked; } /* * Allocate C64 colors */ void C64Display::InitColors(uint8 *colors) { SDL_Color palette[PALETTE_SIZE]; for (int i=0; i<16; i++) { palette[i].r = palette_red[i]; palette[i].g = palette_green[i]; palette[i].b = palette_blue[i]; } palette[fill_gray].r = palette[fill_gray].g = palette[fill_gray].b = 0xd0; palette[shine_gray].r = palette[shine_gray].g = palette[shine_gray].b = 0xf0; palette[shadow_gray].r = palette[shadow_gray].g = palette[shadow_gray].b = 0x80; palette[red].r = 0xf0; palette[red].g = palette[red].b = 0; palette[green].g = 0xf0; palette[green].r = palette[green].b = 0; SDL_SetColors(screen, palette, 0, PALETTE_SIZE); SDL_SetColors(real_screen, palette, 0, PALETTE_SIZE); for (int i=0; i<256; i++) colors[i] = i & 0x0f; } /* * Show a requester (error message) */ long int ShowRequester(char *a,char *b,char *) { printf("%s: %s\n", a, b); return 1; }