From a855d6202536ff28e5aae4f22a0f31d8f5b325d0 Mon Sep 17 00:00:00 2001
From: Franklin Wei <git@fwei.tk>
Date: Sat, 21 Jan 2017 15:18:31 -0500
Subject: Port of Duke Nukem 3D

This ports Fabien Sanglard's Chocolate Duke to run on a version of SDL
for Rockbox.

Change-Id: I8f2c4c78af19de10c1633ed7bb7a997b43256dd9
---
 apps/plugins/sdl/src/video/svga/SDL_svgaevents.c | 412 +++++++++++++++++++++++
 1 file changed, 412 insertions(+)
 create mode 100644 apps/plugins/sdl/src/video/svga/SDL_svgaevents.c

(limited to 'apps/plugins/sdl/src/video/svga/SDL_svgaevents.c')

diff --git a/apps/plugins/sdl/src/video/svga/SDL_svgaevents.c b/apps/plugins/sdl/src/video/svga/SDL_svgaevents.c
new file mode 100644
index 0000000000..107a702cf3
--- /dev/null
+++ b/apps/plugins/sdl/src/video/svga/SDL_svgaevents.c
@@ -0,0 +1,412 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2012 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/* Handle the event stream, converting X11 events into SDL events */
+
+#include <vga.h>
+#include <vgamouse.h>
+#include <vgakeyboard.h>
+#if defined(__LINUX__)
+#include <linux/kd.h>
+#include <linux/keyboard.h>
+#elif defined(__FREEBSD__)
+#include <sys/kbio.h>
+#else
+#error You must choose your operating system here
+#endif
+
+#include "../../events/SDL_sysevents.h"
+#include "../../events/SDL_events_c.h"
+#include "SDL_svgavideo.h"
+#include "SDL_svgaevents_c.h"
+
+/* The translation tables from a console scancode to a SDL keysym */
+#if defined(linux)
+#define NUM_VGAKEYMAPS	(1<<KG_CAPSSHIFT)
+static Uint16 vga_keymap[NUM_VGAKEYMAPS][NR_KEYS];
+#elif defined(__FREEBSD__)
+/* FIXME: Free the keymap when we shut down the video mode */
+static keymap_t *vga_keymap = NULL;
+#else
+#error You must choose your operating system here
+#endif
+static SDLKey keymap[128];
+static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym);
+
+/* Ugh, we have to duplicate the kernel's keysym mapping code...
+   Oh, it's not so bad. :-)
+
+   FIXME: Add keyboard LED handling code
+ */
+#if defined(linux)
+int SVGA_initkeymaps(int fd)
+{
+	struct kbentry entry;
+	int map, i;
+
+	/* Load all the keysym mappings */
+	for ( map=0; map<NUM_VGAKEYMAPS; ++map ) {
+		SDL_memset(vga_keymap[map], 0, NR_KEYS*sizeof(Uint16));
+		for ( i=0; i<NR_KEYS; ++i ) {
+			entry.kb_table = map;
+			entry.kb_index = i;
+			if ( ioctl(fd, KDGKBENT, &entry) == 0 ) {
+				/* The "Enter" key is a special case */
+				if ( entry.kb_value == K_ENTER ) {
+					entry.kb_value = K(KT_ASCII,13);
+				}
+				/* Handle numpad specially as well */
+				if ( KTYP(entry.kb_value) == KT_PAD ) {
+				    switch ( entry.kb_value ) {
+					case K_P0:
+					case K_P1:
+					case K_P2:
+					case K_P3:
+					case K_P4:
+					case K_P5:
+					case K_P6:
+					case K_P7:
+					case K_P8:
+					case K_P9:
+					    vga_keymap[map][i]=entry.kb_value;
+					    vga_keymap[map][i]+= '0';
+					    break;
+                                        case K_PPLUS:
+					    vga_keymap[map][i]=K(KT_ASCII,'+');
+					    break;
+                                        case K_PMINUS:
+					    vga_keymap[map][i]=K(KT_ASCII,'-');
+					    break;
+                                        case K_PSTAR:
+					    vga_keymap[map][i]=K(KT_ASCII,'*');
+					    break;
+                                        case K_PSLASH:
+					    vga_keymap[map][i]=K(KT_ASCII,'/');
+					    break;
+                                        case K_PENTER:
+					    vga_keymap[map][i]=K(KT_ASCII,'\r');
+					    break;
+                                        case K_PCOMMA:
+					    vga_keymap[map][i]=K(KT_ASCII,',');
+					    break;
+                                        case K_PDOT:
+					    vga_keymap[map][i]=K(KT_ASCII,'.');
+					    break;
+					default:
+					    break;
+				    }
+				}
+				/* Do the normal key translation */
+				if ( (KTYP(entry.kb_value) == KT_LATIN) ||
+				     (KTYP(entry.kb_value) == KT_ASCII) ||
+				     (KTYP(entry.kb_value) == KT_LETTER) ) {
+					vga_keymap[map][i] = entry.kb_value;
+				}
+			}
+		}
+	}
+	return(0);
+}
+#elif defined(__FREEBSD__)
+int SVGA_initkeymaps(int fd)
+{
+	vga_keymap = SDL_malloc(sizeof(keymap_t));
+	if ( ! vga_keymap ) {
+		SDL_OutOfMemory();
+		return(-1);
+	}
+	if (ioctl(fd, GIO_KEYMAP, vga_keymap) == -1) {
+		SDL_free(vga_keymap);
+		vga_keymap = NULL;
+		SDL_SetError("Unable to get keyboard map");
+		return(-1);
+	}
+	return(0);
+}
+#else
+#error You must choose your operating system here
+#endif
+
+int posted = 0;
+
+void SVGA_mousecallback(int button, int dx, int dy,
+                          int u1,int u2,int u3, int u4)
+{
+	if ( dx || dy ) {
+		posted += SDL_PrivateMouseMotion(0, 1, dx, dy);
+	}
+	if ( button & MOUSE_LEFTBUTTON ) {
+		if ( !(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(1)) ) {
+			posted += SDL_PrivateMouseButton(SDL_PRESSED, 1, 0, 0);
+		}
+	} else {
+		if ( (SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(1)) ) {
+			posted += SDL_PrivateMouseButton(SDL_RELEASED, 1, 0, 0);
+		}
+	}
+	if ( button & MOUSE_MIDDLEBUTTON ) {
+		if ( !(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(2)) ) {
+			posted += SDL_PrivateMouseButton(SDL_PRESSED, 2, 0, 0);
+		}
+	} else {
+		if ( (SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(2)) ) {
+			posted += SDL_PrivateMouseButton(SDL_RELEASED, 2, 0, 0);
+		}
+	}
+	if ( button & MOUSE_RIGHTBUTTON ) {
+		if ( !(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(3)) ) {
+			posted += SDL_PrivateMouseButton(SDL_PRESSED, 3, 0, 0);
+		}
+	} else {
+		if ( (SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(3)) ) {
+			posted += SDL_PrivateMouseButton(SDL_RELEASED, 3, 0, 0);
+		}
+	}
+}
+
+void SVGA_keyboardcallback(int scancode, int pressed)
+{
+	SDL_keysym keysym;
+
+	if ( pressed ) {
+		posted += SDL_PrivateKeyboard(SDL_PRESSED,
+			    TranslateKey(scancode, &keysym));
+	} else {
+		posted += SDL_PrivateKeyboard(SDL_RELEASED,
+			    TranslateKey(scancode, &keysym));
+	}
+}
+
+void SVGA_PumpEvents(_THIS)
+{
+	do {
+		posted = 0;
+		mouse_update();
+		keyboard_update();
+	} while ( posted );
+}
+
+void SVGA_InitOSKeymap(_THIS)
+{
+	int i;
+
+	/* Initialize the BeOS key translation table */
+	for ( i=0; i<SDL_arraysize(keymap); ++i )
+		keymap[i] = SDLK_UNKNOWN;
+
+	keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
+	keymap[SCANCODE_1] = SDLK_1;
+	keymap[SCANCODE_2] = SDLK_2;
+	keymap[SCANCODE_3] = SDLK_3;
+	keymap[SCANCODE_4] = SDLK_4;
+	keymap[SCANCODE_5] = SDLK_5;
+	keymap[SCANCODE_6] = SDLK_6;
+	keymap[SCANCODE_7] = SDLK_7;
+	keymap[SCANCODE_8] = SDLK_8;
+	keymap[SCANCODE_9] = SDLK_9;
+	keymap[SCANCODE_0] = SDLK_0;
+	keymap[SCANCODE_MINUS] = SDLK_MINUS;
+	keymap[SCANCODE_EQUAL] = SDLK_EQUALS;
+	keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
+	keymap[SCANCODE_TAB] = SDLK_TAB;
+	keymap[SCANCODE_Q] = SDLK_q;
+	keymap[SCANCODE_W] = SDLK_w;
+	keymap[SCANCODE_E] = SDLK_e;
+	keymap[SCANCODE_R] = SDLK_r;
+	keymap[SCANCODE_T] = SDLK_t;
+	keymap[SCANCODE_Y] = SDLK_y;
+	keymap[SCANCODE_U] = SDLK_u;
+	keymap[SCANCODE_I] = SDLK_i;
+	keymap[SCANCODE_O] = SDLK_o;
+	keymap[SCANCODE_P] = SDLK_p;
+	keymap[SCANCODE_BRACKET_LEFT] = SDLK_LEFTBRACKET;
+	keymap[SCANCODE_BRACKET_RIGHT] = SDLK_RIGHTBRACKET;
+	keymap[SCANCODE_ENTER] = SDLK_RETURN;
+	keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
+	keymap[SCANCODE_A] = SDLK_a;
+	keymap[SCANCODE_S] = SDLK_s;
+	keymap[SCANCODE_D] = SDLK_d;
+	keymap[SCANCODE_F] = SDLK_f;
+	keymap[SCANCODE_G] = SDLK_g;
+	keymap[SCANCODE_H] = SDLK_h;
+	keymap[SCANCODE_J] = SDLK_j;
+	keymap[SCANCODE_K] = SDLK_k;
+	keymap[SCANCODE_L] = SDLK_l;
+	keymap[SCANCODE_SEMICOLON] = SDLK_SEMICOLON;
+	keymap[SCANCODE_APOSTROPHE] = SDLK_QUOTE;
+	keymap[SCANCODE_GRAVE] = SDLK_BACKQUOTE;
+	keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
+	keymap[SCANCODE_BACKSLASH] = SDLK_BACKSLASH;
+	keymap[SCANCODE_Z] = SDLK_z;
+	keymap[SCANCODE_X] = SDLK_x;
+	keymap[SCANCODE_C] = SDLK_c;
+	keymap[SCANCODE_V] = SDLK_v;
+	keymap[SCANCODE_B] = SDLK_b;
+	keymap[SCANCODE_N] = SDLK_n;
+	keymap[SCANCODE_M] = SDLK_m;
+	keymap[SCANCODE_COMMA] = SDLK_COMMA;
+	keymap[SCANCODE_PERIOD] = SDLK_PERIOD;
+	keymap[SCANCODE_SLASH] = SDLK_SLASH;
+	keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
+	keymap[SCANCODE_KEYPADMULTIPLY] = SDLK_KP_MULTIPLY;
+	keymap[SCANCODE_LEFTALT] = SDLK_LALT;
+	keymap[SCANCODE_SPACE] = SDLK_SPACE;
+	keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
+	keymap[SCANCODE_F1] = SDLK_F1;
+	keymap[SCANCODE_F2] = SDLK_F2;
+	keymap[SCANCODE_F3] = SDLK_F3;
+	keymap[SCANCODE_F4] = SDLK_F4;
+	keymap[SCANCODE_F5] = SDLK_F5;
+	keymap[SCANCODE_F6] = SDLK_F6;
+	keymap[SCANCODE_F7] = SDLK_F7;
+	keymap[SCANCODE_F8] = SDLK_F8;
+	keymap[SCANCODE_F9] = SDLK_F9;
+	keymap[SCANCODE_F10] = SDLK_F10;
+	keymap[SCANCODE_NUMLOCK] = SDLK_NUMLOCK;
+	keymap[SCANCODE_SCROLLLOCK] = SDLK_SCROLLOCK;
+	keymap[SCANCODE_KEYPAD7] = SDLK_KP7;
+	keymap[SCANCODE_CURSORUPLEFT] = SDLK_KP7;
+	keymap[SCANCODE_KEYPAD8] = SDLK_KP8;
+	keymap[SCANCODE_CURSORUP] = SDLK_KP8;
+	keymap[SCANCODE_KEYPAD9] = SDLK_KP9;
+	keymap[SCANCODE_CURSORUPRIGHT] = SDLK_KP9;
+	keymap[SCANCODE_KEYPADMINUS] = SDLK_KP_MINUS;
+	keymap[SCANCODE_KEYPAD4] = SDLK_KP4;
+	keymap[SCANCODE_CURSORLEFT] = SDLK_KP4;
+	keymap[SCANCODE_KEYPAD5] = SDLK_KP5;
+	keymap[SCANCODE_KEYPAD6] = SDLK_KP6;
+	keymap[SCANCODE_CURSORRIGHT] = SDLK_KP6;
+	keymap[SCANCODE_KEYPADPLUS] = SDLK_KP_PLUS;
+	keymap[SCANCODE_KEYPAD1] = SDLK_KP1;
+	keymap[SCANCODE_CURSORDOWNLEFT] = SDLK_KP1;
+	keymap[SCANCODE_KEYPAD2] = SDLK_KP2;
+	keymap[SCANCODE_CURSORDOWN] = SDLK_KP2;
+	keymap[SCANCODE_KEYPAD3] = SDLK_KP3;
+	keymap[SCANCODE_CURSORDOWNRIGHT] = SDLK_KP3;
+	keymap[SCANCODE_KEYPAD0] = SDLK_KP0;
+	keymap[SCANCODE_KEYPADPERIOD] = SDLK_KP_PERIOD;
+	keymap[SCANCODE_LESS] = SDLK_LESS;
+	keymap[SCANCODE_F11] = SDLK_F11;
+	keymap[SCANCODE_F12] = SDLK_F12;
+	keymap[SCANCODE_KEYPADENTER] = SDLK_KP_ENTER;
+	keymap[SCANCODE_RIGHTCONTROL] = SDLK_RCTRL;
+	keymap[SCANCODE_CONTROL] = SDLK_RCTRL;
+	keymap[SCANCODE_KEYPADDIVIDE] = SDLK_KP_DIVIDE;
+	keymap[SCANCODE_PRINTSCREEN] = SDLK_PRINT;
+	keymap[SCANCODE_RIGHTALT] = SDLK_RALT;
+	keymap[SCANCODE_BREAK] = SDLK_BREAK;
+	keymap[SCANCODE_BREAK_ALTERNATIVE] = SDLK_UNKNOWN;
+	keymap[SCANCODE_HOME] = SDLK_HOME;
+	keymap[SCANCODE_CURSORBLOCKUP] = SDLK_UP;
+	keymap[SCANCODE_PAGEUP] = SDLK_PAGEUP;
+	keymap[SCANCODE_CURSORBLOCKLEFT] = SDLK_LEFT;
+	keymap[SCANCODE_CURSORBLOCKRIGHT] = SDLK_RIGHT;
+	keymap[SCANCODE_END] = SDLK_END;
+	keymap[SCANCODE_CURSORBLOCKDOWN] = SDLK_DOWN;
+	keymap[SCANCODE_PAGEDOWN] = SDLK_PAGEDOWN;
+	keymap[SCANCODE_INSERT] = SDLK_INSERT;
+	keymap[SCANCODE_REMOVE] = SDLK_DELETE;
+	keymap[119] = SDLK_PAUSE;
+	keymap[SCANCODE_RIGHTWIN] = SDLK_RSUPER;
+	keymap[SCANCODE_LEFTWIN] = SDLK_LSUPER;
+	keymap[127] = SDLK_MENU;
+}
+
+#if defined(linux)
+static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
+{
+	/* Set the keysym information */
+	keysym->scancode = scancode;
+	keysym->sym = keymap[scancode];
+	keysym->mod = KMOD_NONE;
+
+	/* If UNICODE is on, get the UNICODE value for the key */
+	keysym->unicode = 0;
+	if ( SDL_TranslateUNICODE ) {
+		int map;
+		SDLMod modstate;
+
+		modstate = SDL_GetModState();
+		map = 0;
+		if ( modstate & KMOD_SHIFT ) {
+			map |= (1<<KG_SHIFT);
+		}
+		if ( modstate & KMOD_CTRL ) {
+			map |= (1<<KG_CTRL);
+		}
+		if ( modstate & KMOD_ALT ) {
+			map |= (1<<KG_ALT);
+		}
+		if ( modstate & KMOD_MODE ) {
+			map |= (1<<KG_ALTGR);
+		}
+		if ( KTYP(vga_keymap[map][scancode]) == KT_LETTER ) {
+			if ( modstate & KMOD_CAPS ) {
+				map ^= (1<<KG_SHIFT);
+			}
+		}
+		if ( KTYP(vga_keymap[map][scancode]) == KT_PAD ) {
+			if ( modstate & KMOD_NUM ) {
+				keysym->unicode=KVAL(vga_keymap[map][scancode]);
+			}
+		} else {
+			keysym->unicode = KVAL(vga_keymap[map][scancode]);
+		}
+	}
+	return(keysym);
+}
+#elif defined(__FREEBSD__)
+static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
+{
+	/* Set the keysym information */
+	keysym->scancode = scancode;
+	keysym->sym = keymap[scancode];
+	keysym->mod = KMOD_NONE;
+
+	/* If UNICODE is on, get the UNICODE value for the key */
+	keysym->unicode = 0;
+	if ( SDL_TranslateUNICODE && vga_keymap ) {
+		int map;
+		SDLMod modstate;
+
+		modstate = SDL_GetModState();
+		map = 0;
+		if ( modstate & KMOD_SHIFT ) {
+			map += 1;
+		}
+		if ( modstate & KMOD_CTRL ) {
+			map += 2;
+		}
+		if ( modstate & KMOD_ALT ) {
+			map += 4;
+		}
+		if ( !(vga_keymap->key[scancode].spcl & (0x80 >> map)) ) {
+			keysym->unicode = vga_keymap->key[scancode].map[map];
+		}
+
+	}
+	return(keysym);
+}
+#else
+#error You must choose your operating system here
+#endif
-- 
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