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SDL12_compat.c
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SDL12_compat.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This file contains functions for backwards compatibility with SDL 1.2 */
#include "SDL20_include_wrapper.h"
#if !SDL_VERSION_ATLEAST(2,0,0)
#error You need to compile against SDL 2.0 headers.
#endif
/*
* We report the library version as 1.2.$(SDL12_COMPAT_VERSION). This number
* should be way ahead of what SDL-1.2 Classic would report, so apps can
* decide if they're running under the compat layer, if they really care.
*/
#define SDL12_COMPAT_VERSION 50
#include <stdarg.h>
#include <limits.h>
#ifndef _WIN32
#include <stdio.h> /* fprintf(), etc. */
#include <stdlib.h> /* for abort() */
#include <string.h>
#endif
/* mingw headers may define these ... */
#undef strtod
#undef strcasecmp
#undef strncasecmp
#undef snprintf
#undef vsnprintf
/* !!! IMPLEMENT_ME X11_KeyToUnicode ? */
#define SDL_BlitSurface SDL_UpperBlit
#ifdef __cplusplus
extern "C" {
#endif
#if 0
#define FIXME(x) do {} while (0)
#else
#define FIXME(x) \
do { \
static SDL_bool seen = SDL_FALSE; \
if (!seen) { \
SDL20_Log("FIXME: %s (%s:%d)\n", x, __FUNCTION__, __LINE__); \
seen = SDL_TRUE; \
} \
} while (0)
#endif
#define SDL20_SYM(rc,fn,params,args,ret) \
typedef rc (SDLCALL *SDL20_##fn##_t) params; \
static SDL20_##fn##_t SDL20_##fn = NULL;
#include "SDL20_syms.h"
/* Things that _should_ be binary compatible pass right through... */
#define SDL20_SYM_PASSTHROUGH(rc,fn,params,args,ret) \
DECLSPEC rc SDLCALL SDL_##fn params { ret SDL20_##fn args; }
#include "SDL20_syms.h"
/* these are macros (etc) in the SDL headers, so make our own. */
#define SDL20_OutOfMemory() SDL20_Error(SDL_ENOMEM)
#define SDL20_Unsupported() SDL20_Error(SDL_UNSUPPORTED)
#define SDL20_InvalidParamError(param) SDL20_SetError("Parameter '%s' is invalid", (param))
#define SDL20_zero(x) SDL20_memset(&(x), 0, sizeof((x)))
#define SDL20_zerop(x) SDL20_memset((x), 0, sizeof(*(x)))
#define SDL_ReportAssertion SDL20_ReportAssertion
/* From SDL2.0's SDL_bits.h: a force-inlined function. */
#if defined(__WATCOMC__) && defined(__386__)
extern _inline int _SDL20_bsr_watcom (Uint32);
#pragma aux _SDL20_bsr_watcom = \
"bsr eax, eax" \
parm [eax] nomemory \
value [eax] \
modify exact [eax] nomemory;
#endif
SDL_FORCE_INLINE int
SDL20_MostSignificantBitIndex32(Uint32 x)
{
#if defined(__GNUC__) && (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
/* Count Leading Zeroes builtin in GCC.
* http://gcc.gnu.org/onlinedocs/gcc-4.3.4/gcc/Other-Builtins.html
*/
if (x == 0) {
return -1;
}
return 31 - __builtin_clz(x);
#elif defined(__WATCOMC__) && defined(__386__)
if (x == 0) {
return -1;
}
return _SDL20_bsr_watcom(x);
#elif defined(_MSC_VER)
unsigned long index;
if (_BitScanReverse(&index, x)) {
return index;
}
return -1;
#else
/* Based off of Bit Twiddling Hacks by Sean Eron Anderson
* <seander@cs.stanford.edu>, released in the public domain.
* http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog
*/
const Uint32 b[] = {0x2, 0xC, 0xF0, 0xFF00, 0xFFFF0000};
const int S[] = {1, 2, 4, 8, 16};
int msbIndex = 0;
int i;
if (x == 0) {
return -1;
}
for (i = 4; i >= 0; i--)
{
if (x & b[i])
{
x >>= S[i];
msbIndex |= S[i];
}
}
return msbIndex;
#endif
}
#define SDL12_DEFAULT_REPEAT_DELAY 500
#define SDL12_DEFAULT_REPEAT_INTERVAL 30
#define SDL12_INIT_TIMER 0x00000001
#define SDL12_INIT_AUDIO 0x00000010
#define SDL12_INIT_VIDEO 0x00000020
#define SDL12_INIT_CDROM 0x00000100
#define SDL12_INIT_JOYSTICK 0x00000200
#define SDL12_INIT_NOPARACHUTE 0x00100000
#define SDL12_INIT_EVENTTHREAD 0x01000000
#define SDL12_INIT_EVERYTHING 0x0000FFFF
#define SDL12_LOGPAL 1
#define SDL12_PHYSPAL 2
#ifndef SDL_SIMD_ALIGNED
#define SDL_SIMD_ALIGNED 0x00000008
#endif
typedef struct SDL12_Rect
{
Sint16 x;
Sint16 y;
Uint16 w;
Uint16 h;
} SDL12_Rect;
typedef struct SDL12_Palette
{
int ncolors;
SDL_Color *colors;
} SDL12_Palette;
typedef struct SDL12_PixelFormat
{
SDL12_Palette *palette;
Uint8 BitsPerPixel;
Uint8 BytesPerPixel;
Uint8 Rloss;
Uint8 Gloss;
Uint8 Bloss;
Uint8 Aloss;
Uint8 Rshift;
Uint8 Gshift;
Uint8 Bshift;
Uint8 Ashift;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
Uint32 colorkey;
Uint8 alpha;
} SDL12_PixelFormat;
typedef struct SDL12_Surface
{
Uint32 flags;
SDL12_PixelFormat *format;
int w;
int h;
Uint16 pitch;
void *pixels;
int offset;
SDL_Surface *surface20; /* the real SDL 1.2 has an opaque pointer to a platform-specific thing here named "hwdata". */
SDL12_Rect clip_rect;
Uint32 unused1;
Uint32 locked;
void *blitmap;
unsigned int format_version;
int refcount;
} SDL12_Surface;
#define SDL12_YV12_OVERLAY 0x32315659
#define SDL12_IYUV_OVERLAY 0x56555949
#define SDL12_YUY2_OVERLAY 0x32595559
#define SDL12_UYVY_OVERLAY 0x59565955
#define SDL12_YVYU_OVERLAY 0x55595659
typedef struct SDL12_Overlay
{
Uint32 format;
int w;
int h;
int planes;
Uint16 *pitches;
Uint8 **pixels;
void *hwfuncs;
void *hwdata;
Uint32 hw_overlay :1;
Uint32 UnusedBits :31;
} SDL12_Overlay;
typedef struct SDL12_YUVData /* internal struct, not part of public SDL 1.2 API */
{
SDL_Texture *texture20;
SDL_bool dirty;
Uint8 *pixelbuf;
Uint8 *pixels[3];
Uint16 pitches[3];
} SDL12_YUVData;
typedef struct
{
Uint32 hw_available :1;
Uint32 wm_available :1;
Uint32 UnusedBits1 :6;
Uint32 UnusedBits2 :1;
Uint32 blit_hw :1;
Uint32 blit_hw_CC :1;
Uint32 blit_hw_A :1;
Uint32 blit_sw :1;
Uint32 blit_sw_CC :1;
Uint32 blit_sw_A :1;
Uint32 blit_fill :1;
Uint32 UnusedBits3 :16;
Uint32 video_mem;
SDL12_PixelFormat *vfmt;
int current_w;
int current_h;
} SDL12_VideoInfo;
#define SDL12_HWSURFACE 0x00000001
#define SDL12_ASYNCBLIT 0x00000004
#define SDL12_ANYFORMAT 0x10000000
#define SDL12_HWPALETTE 0x20000000
#define SDL12_DOUBLEBUF 0x40000000
#define SDL12_FULLSCREEN 0x80000000
#define SDL12_OPENGL 0x00000002
#define SDL12_OPENGLBLIT 0x0000000A
#define SDL12_RESIZABLE 0x00000010
#define SDL12_NOFRAME 0x00000020
#define SDL12_HWACCEL 0x00000100
#define SDL12_SRCCOLORKEY 0x00001000
#define SDL12_RLEACCELOK 0x00002000
#define SDL12_RLEACCEL 0x00004000
#define SDL12_SRCALPHA 0x00010000
#define SDL12_PREALLOC 0x01000000
typedef enum
{
SDLK12_UNKNOWN = 0,
SDLK12_FIRST = 0,
SDLK12_BACKSPACE = 8,
SDLK12_TAB = 9,
SDLK12_CLEAR = 12,
SDLK12_RETURN = 13,
SDLK12_PAUSE = 19,
SDLK12_ESCAPE = 27,
SDLK12_SPACE = 32,
SDLK12_EXCLAIM = 33,
SDLK12_QUOTEDBL = 34,
SDLK12_HASH = 35,
SDLK12_DOLLAR = 36,
SDLK12_AMPERSAND = 38,
SDLK12_QUOTE = 39,
SDLK12_LEFTPAREN = 40,
SDLK12_RIGHTPAREN = 41,
SDLK12_ASTERISK = 42,
SDLK12_PLUS = 43,
SDLK12_COMMA = 44,
SDLK12_MINUS = 45,
SDLK12_PERIOD = 46,
SDLK12_SLASH = 47,
SDLK12_0 = 48,
SDLK12_1 = 49,
SDLK12_2 = 50,
SDLK12_3 = 51,
SDLK12_4 = 52,
SDLK12_5 = 53,
SDLK12_6 = 54,
SDLK12_7 = 55,
SDLK12_8 = 56,
SDLK12_9 = 57,
SDLK12_COLON = 58,
SDLK12_SEMICOLON = 59,
SDLK12_LESS = 60,
SDLK12_EQUALS = 61,
SDLK12_GREATER = 62,
SDLK12_QUESTION = 63,
SDLK12_AT = 64,
SDLK12_LEFTBRACKET = 91,
SDLK12_BACKSLASH = 92,
SDLK12_RIGHTBRACKET = 93,
SDLK12_CARET = 94,
SDLK12_UNDERSCORE = 95,
SDLK12_BACKQUOTE = 96,
SDLK12_a = 97,
SDLK12_b = 98,
SDLK12_c = 99,
SDLK12_d = 100,
SDLK12_e = 101,
SDLK12_f = 102,
SDLK12_g = 103,
SDLK12_h = 104,
SDLK12_i = 105,
SDLK12_j = 106,
SDLK12_k = 107,
SDLK12_l = 108,
SDLK12_m = 109,
SDLK12_n = 110,
SDLK12_o = 111,
SDLK12_p = 112,
SDLK12_q = 113,
SDLK12_r = 114,
SDLK12_s = 115,
SDLK12_t = 116,
SDLK12_u = 117,
SDLK12_v = 118,
SDLK12_w = 119,
SDLK12_x = 120,
SDLK12_y = 121,
SDLK12_z = 122,
SDLK12_DELETE = 127,
SDLK12_WORLD_0 = 160,
SDLK12_WORLD_1 = 161,
SDLK12_WORLD_2 = 162,
SDLK12_WORLD_3 = 163,
SDLK12_WORLD_4 = 164,
SDLK12_WORLD_5 = 165,
SDLK12_WORLD_6 = 166,
SDLK12_WORLD_7 = 167,
SDLK12_WORLD_8 = 168,
SDLK12_WORLD_9 = 169,
SDLK12_WORLD_10 = 170,
SDLK12_WORLD_11 = 171,
SDLK12_WORLD_12 = 172,
SDLK12_WORLD_13 = 173,
SDLK12_WORLD_14 = 174,
SDLK12_WORLD_15 = 175,
SDLK12_WORLD_16 = 176,
SDLK12_WORLD_17 = 177,
SDLK12_WORLD_18 = 178,
SDLK12_WORLD_19 = 179,
SDLK12_WORLD_20 = 180,
SDLK12_WORLD_21 = 181,
SDLK12_WORLD_22 = 182,
SDLK12_WORLD_23 = 183,
SDLK12_WORLD_24 = 184,
SDLK12_WORLD_25 = 185,
SDLK12_WORLD_26 = 186,
SDLK12_WORLD_27 = 187,
SDLK12_WORLD_28 = 188,
SDLK12_WORLD_29 = 189,
SDLK12_WORLD_30 = 190,
SDLK12_WORLD_31 = 191,
SDLK12_WORLD_32 = 192,
SDLK12_WORLD_33 = 193,
SDLK12_WORLD_34 = 194,
SDLK12_WORLD_35 = 195,
SDLK12_WORLD_36 = 196,
SDLK12_WORLD_37 = 197,
SDLK12_WORLD_38 = 198,
SDLK12_WORLD_39 = 199,
SDLK12_WORLD_40 = 200,
SDLK12_WORLD_41 = 201,
SDLK12_WORLD_42 = 202,
SDLK12_WORLD_43 = 203,
SDLK12_WORLD_44 = 204,
SDLK12_WORLD_45 = 205,
SDLK12_WORLD_46 = 206,
SDLK12_WORLD_47 = 207,
SDLK12_WORLD_48 = 208,
SDLK12_WORLD_49 = 209,
SDLK12_WORLD_50 = 210,
SDLK12_WORLD_51 = 211,
SDLK12_WORLD_52 = 212,
SDLK12_WORLD_53 = 213,
SDLK12_WORLD_54 = 214,
SDLK12_WORLD_55 = 215,
SDLK12_WORLD_56 = 216,
SDLK12_WORLD_57 = 217,
SDLK12_WORLD_58 = 218,
SDLK12_WORLD_59 = 219,
SDLK12_WORLD_60 = 220,
SDLK12_WORLD_61 = 221,
SDLK12_WORLD_62 = 222,
SDLK12_WORLD_63 = 223,
SDLK12_WORLD_64 = 224,
SDLK12_WORLD_65 = 225,
SDLK12_WORLD_66 = 226,
SDLK12_WORLD_67 = 227,
SDLK12_WORLD_68 = 228,
SDLK12_WORLD_69 = 229,
SDLK12_WORLD_70 = 230,
SDLK12_WORLD_71 = 231,
SDLK12_WORLD_72 = 232,
SDLK12_WORLD_73 = 233,
SDLK12_WORLD_74 = 234,
SDLK12_WORLD_75 = 235,
SDLK12_WORLD_76 = 236,
SDLK12_WORLD_77 = 237,
SDLK12_WORLD_78 = 238,
SDLK12_WORLD_79 = 239,
SDLK12_WORLD_80 = 240,
SDLK12_WORLD_81 = 241,
SDLK12_WORLD_82 = 242,
SDLK12_WORLD_83 = 243,
SDLK12_WORLD_84 = 244,
SDLK12_WORLD_85 = 245,
SDLK12_WORLD_86 = 246,
SDLK12_WORLD_87 = 247,
SDLK12_WORLD_88 = 248,
SDLK12_WORLD_89 = 249,
SDLK12_WORLD_90 = 250,
SDLK12_WORLD_91 = 251,
SDLK12_WORLD_92 = 252,
SDLK12_WORLD_93 = 253,
SDLK12_WORLD_94 = 254,
SDLK12_WORLD_95 = 255,
SDLK12_KP0 = 256,
SDLK12_KP1 = 257,
SDLK12_KP2 = 258,
SDLK12_KP3 = 259,
SDLK12_KP4 = 260,
SDLK12_KP5 = 261,
SDLK12_KP6 = 262,
SDLK12_KP7 = 263,
SDLK12_KP8 = 264,
SDLK12_KP9 = 265,
SDLK12_KP_PERIOD = 266,
SDLK12_KP_DIVIDE = 267,
SDLK12_KP_MULTIPLY = 268,
SDLK12_KP_MINUS = 269,
SDLK12_KP_PLUS = 270,
SDLK12_KP_ENTER = 271,
SDLK12_KP_EQUALS = 272,
SDLK12_UP = 273,
SDLK12_DOWN = 274,
SDLK12_RIGHT = 275,
SDLK12_LEFT = 276,
SDLK12_INSERT = 277,
SDLK12_HOME = 278,
SDLK12_END = 279,
SDLK12_PAGEUP = 280,
SDLK12_PAGEDOWN = 281,
SDLK12_F1 = 282,
SDLK12_F2 = 283,
SDLK12_F3 = 284,
SDLK12_F4 = 285,
SDLK12_F5 = 286,
SDLK12_F6 = 287,
SDLK12_F7 = 288,
SDLK12_F8 = 289,
SDLK12_F9 = 290,
SDLK12_F10 = 291,
SDLK12_F11 = 292,
SDLK12_F12 = 293,
SDLK12_F13 = 294,
SDLK12_F14 = 295,
SDLK12_F15 = 296,
SDLK12_NUMLOCK = 300,
SDLK12_CAPSLOCK = 301,
SDLK12_SCROLLOCK = 302,
SDLK12_RSHIFT = 303,
SDLK12_LSHIFT = 304,
SDLK12_RCTRL = 305,
SDLK12_LCTRL = 306,
SDLK12_RALT = 307,
SDLK12_LALT = 308,
SDLK12_RMETA = 309,
SDLK12_LMETA = 310,
SDLK12_LSUPER = 311,
SDLK12_RSUPER = 312,
SDLK12_MODE = 313,
SDLK12_COMPOSE = 314,
SDLK12_HELP = 315,
SDLK12_PRINT = 316,
SDLK12_SYSREQ = 317,
SDLK12_BREAK = 318,
SDLK12_MENU = 319,
SDLK12_POWER = 320,
SDLK12_EURO = 321,
SDLK12_UNDO = 322,
SDLK12_LAST
} SDL12Key;
typedef enum
{
KMOD12_NONE = 0x0000,
KMOD12_LSHIFT = 0x0001,
KMOD12_RSHIFT = 0x0002,
KMOD12_LCTRL = 0x0040,
KMOD12_RCTRL = 0x0080,
KMOD12_LALT = 0x0100,
KMOD12_RALT = 0x0200,
KMOD12_LMETA = 0x0400,
KMOD12_RMETA = 0x0800,
KMOD12_NUM = 0x1000,
KMOD12_CAPS = 0x2000,
KMOD12_MODE = 0x4000,
KMOD12_RESERVED = 0x8000
} SDL12Mod;
typedef struct SDL12_keysym
{
Uint8 scancode;
SDL12Key sym;
unsigned int mod; /* SDL12Mod */
Uint16 unicode;
} SDL12_keysym;
#define SDL12_RELEASED 0
#define SDL12_PRESSED 1
typedef enum
{
SDL12_NOEVENT = 0,
SDL12_ACTIVEEVENT,
SDL12_KEYDOWN,
SDL12_KEYUP,
SDL12_MOUSEMOTION,
SDL12_MOUSEBUTTONDOWN,
SDL12_MOUSEBUTTONUP,
SDL12_JOYAXISMOTION,
SDL12_JOYBALLMOTION,
SDL12_JOYHATMOTION,
SDL12_JOYBUTTONDOWN,
SDL12_JOYBUTTONUP,
SDL12_QUIT,
SDL12_SYSWMEVENT,
SDL12_EVENT_RESERVEDA,
SDL12_EVENT_RESERVEDB,
SDL12_VIDEORESIZE,
SDL12_VIDEOEXPOSE,
SDL12_USEREVENT = 24,
SDL12_NUMEVENTS = 32
} SDL12_EventType;
#define SDL12_APPMOUSEFOCUS (1<<0)
#define SDL12_APPINPUTFOCUS (1<<1)
#define SDL12_APPACTIVE (1<<2)
typedef struct
{
Uint8 type;
Uint8 gain;
Uint8 state;
} SDL12_ActiveEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 state;
SDL12_keysym keysym;
} SDL12_KeyboardEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 state;
Uint16 x, y;
Sint16 xrel;
Sint16 yrel;
} SDL12_MouseMotionEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 button;
Uint8 state;
Uint16 x, y;
} SDL12_MouseButtonEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 axis;
Sint16 value;
} SDL12_JoyAxisEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 ball;
Sint16 xrel;
Sint16 yrel;
} SDL12_JoyBallEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 hat;
Uint8 value;
} SDL12_JoyHatEvent;
typedef struct
{
Uint8 type;
Uint8 which;
Uint8 button;
Uint8 state;
} SDL12_JoyButtonEvent;
typedef struct
{
Uint8 type;
int w;
int h;
} SDL12_ResizeEvent;
typedef struct
{
Uint8 type;
} SDL12_ExposeEvent;
typedef struct
{
Uint8 type;
} SDL12_QuitEvent;
typedef struct
{
Uint8 type;
int code;
void *data1;
void *data2;
} SDL12_UserEvent;
typedef struct
{
Uint8 type;
void *msg;
} SDL12_SysWMEvent;
typedef union
{
Uint8 type;
SDL12_ActiveEvent active;
SDL12_KeyboardEvent key;
SDL12_MouseMotionEvent motion;
SDL12_MouseButtonEvent button;
SDL12_JoyAxisEvent jaxis;
SDL12_JoyBallEvent jball;
SDL12_JoyHatEvent jhat;
SDL12_JoyButtonEvent jbutton;
SDL12_ResizeEvent resize;
SDL12_ExposeEvent expose;
SDL12_QuitEvent quit;
SDL12_UserEvent user;
SDL12_SysWMEvent syswm;
} SDL12_Event;
typedef int (SDLCALL *SDL12_EventFilter)(const SDL12_Event *event12);
static int SDLCALL EventFilter20to12(void *data, SDL_Event *event20);
typedef Uint32 (SDLCALL *SDL12_TimerCallback)(Uint32 interval);
typedef SDL_TimerCallback SDL12_NewTimerCallback;
typedef struct
{
SDL12_Rect area;
Sint16 hot_x;
Sint16 hot_y;
Uint8 *data;
Uint8 *mask;
Uint8 *save[2];
SDL_Cursor *wm_cursor; /* the real SDL 1.2 has an opaque pointer to a platform-specific cursor here. */
} SDL12_Cursor;
typedef enum
{
SDL12_GRAB_QUERY = -1,
SDL12_GRAB_OFF = 0,
SDL12_GRAB_ON = 1
} SDL12_GrabMode;
typedef enum
{
SDL12_GL_RED_SIZE,
SDL12_GL_GREEN_SIZE,
SDL12_GL_BLUE_SIZE,
SDL12_GL_ALPHA_SIZE,
SDL12_GL_BUFFER_SIZE,
SDL12_GL_DOUBLEBUFFER,
SDL12_GL_DEPTH_SIZE,
SDL12_GL_STENCIL_SIZE,
SDL12_GL_ACCUM_RED_SIZE,
SDL12_GL_ACCUM_GREEN_SIZE,
SDL12_GL_ACCUM_BLUE_SIZE,
SDL12_GL_ACCUM_ALPHA_SIZE,
SDL12_GL_STEREO,
SDL12_GL_MULTISAMPLEBUFFERS,
SDL12_GL_MULTISAMPLESAMPLES,
SDL12_GL_ACCELERATED_VISUAL,
SDL12_GL_SWAP_CONTROL,
SDL12_GL_MAX_ATTRIBUTE
} SDL12_GLattr;
typedef enum
{
SDL12_CD_TRAYEMPTY,
SDL12_CD_STOPPED,
SDL12_CD_PLAYING,
SDL12_CD_PAUSED,
SDL12_CD_ERROR = -1
} SDL12_CDstatus;
typedef struct
{
Uint8 id;
Uint8 type;
Uint16 unused;
Uint32 length;
Uint32 offset;
} SDL12_CDtrack;
typedef struct SDL12_CD
{
int id;
SDL12_CDstatus status;
int numtracks;
int cur_track;
int cur_frame;
SDL12_CDtrack track[100]; /* in 1.2, this was SDL_MAX_TRACKS+1 */
} SDL12_CD;
typedef struct
{
Uint32 format;
int nummodes;
SDL12_Rect *modeslist12;
SDL12_Rect **modes12; /* ptrs to each item in modeslist, for SDL_ListModes() */
} VideoModeList;
typedef struct
{
int device_index;
SDL_Joystick *joystick;
} JoystickOpenedItem;
#include "SDL_opengl.h"
#include "SDL_opengl_glext.h"
#define OPENGL_SYM(ext,rc,fn,params,args,ret) typedef rc (GLAPIENTRY *openglfn_##fn##_t) params;
#include "SDL20_syms.h"
typedef struct OpenGLEntryPoints
{
SDL_bool SUPPORTS_Core;
#define OPENGL_EXT(name) SDL_bool SUPPORTS_##name;
#include "SDL20_syms.h"
#define OPENGL_SYM(ext,rc,fn,params,args,ret) openglfn_##fn##_t fn;
#include "SDL20_syms.h"
} OpenGLEntryPoints;
/* !!! FIXME: grep for VideoWindow20 places that might care if it's NULL */
/* !!! FIXME: go through all of these. */
static VideoModeList *VideoModes = NULL;
static int VideoModesCount = 0; /* this counts items in VideoModeList, not total video modes. */
static SDL12_VideoInfo VideoInfo12;
static SDL12_Palette VideoInfoPalette12;
static SDL12_PixelFormat VideoInfoVfmt12;
static SDL_PixelFormat *VideoInfoVfmt20 = NULL;
static SDL_bool VideoWindowGrabbed = SDL_FALSE;
static SDL_bool VideoCursorHidden = SDL_FALSE;
static SDL_Window *VideoWindow20 = NULL;
static SDL_Renderer *VideoRenderer20 = NULL;
static SDL_Texture *VideoTexture20 = NULL;
static SDL12_Surface *VideoSurface12 = NULL;
static SDL_Palette *VideoPhysicalPalette20 = NULL;
static Uint32 VideoSurfacePresentTicks = 0;
static Uint32 VideoSurfaceLastPresentTicks = 0;
static SDL_Surface *VideoConvertSurface20 = NULL;
static SDL_GLContext VideoGLContext20 = NULL;
static SDL12_Overlay *QueuedDisplayOverlay12 = NULL;
static SDL12_Rect QueuedDisplayOverlayDstRect12;
static char *WindowTitle = NULL;
static char *WindowIconTitle = NULL;
static SDL_Surface *VideoIcon20 = NULL;
static int EnabledUnicode = 0;
static int VideoDisplayIndex = 0;
static SDL_bool CDRomInit = SDL_FALSE;
static char *CDRomPath = NULL;
static SDL12_CD *CDRomDevice = NULL;
static SDL12_EventFilter EventFilter12 = NULL;
static SDL12_Cursor *CurrentCursor12 = NULL;
static Uint8 EventStates[SDL12_NUMEVENTS];
static int SwapInterval = 0;
static JoystickOpenedItem JoystickOpenList[16];
static Uint8 KeyState[SDLK12_LAST];
static SDL_bool MouseInputIsRelative = SDL_FALSE;
static SDL_Point MousePosition = { 0, 0 };
static OpenGLEntryPoints OpenGLFuncs;
static int OpenGLBlitLockCount = 0;
static GLuint OpenGLBlitTexture = 0;
static int OpenGLLogicalScalingWidth = 0;
static int OpenGLLogicalScalingHeight = 0;
static GLuint OpenGLLogicalScalingFBO = 0;
static GLuint OpenGLLogicalScalingColor = 0;
static GLuint OpenGLLogicalScalingDepth = 0;
static int OpenGLLogicalScalingSamples = 0;
static GLuint OpenGLLogicalScalingMultisampleFBO = 0;
static GLuint OpenGLLogicalScalingMultisampleColor = 0;
static GLuint OpenGLLogicalScalingMultisampleDepth = 0;
static GLuint OpenGLCurrentReadFBO = 0;
static GLuint OpenGLCurrentDrawFBO = 0;
/* !!! FIXME: need a mutex for the event queue. */
#define SDL12_MAXEVENTS 128
typedef struct EventQueueType
{
SDL12_Event event12;
struct EventQueueType *next;
} EventQueueType;
static EventQueueType EventQueuePool[SDL12_MAXEVENTS];
static EventQueueType *EventQueueHead = NULL;
static EventQueueType *EventQueueTail = NULL;
static EventQueueType *EventQueueAvailable = NULL;
/* This is a KEYDOWN event which is being held for a follow-up TEXTINPUT */
static SDL12_Event PendingKeydownEvent;
/* Obviously we can't use SDL_LoadObject() to load SDL2. :) */
static char loaderror[256];
#if defined(_WIN32)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
#define DIRSEP "\\"
#define SDL20_LIBNAME "SDL2.dll"
/* require SDL2 >= 2.0.12 for SDL_CreateThread binary compatibility */
#define SDL20_REQUIRED_VER SDL_VERSIONNUM(2,0,12)
static HMODULE Loaded_SDL20 = NULL;
#define LoadSDL20Library() ((Loaded_SDL20 = LoadLibraryA(SDL20_LIBNAME)) != NULL)
#define LookupSDL20Sym(sym) (void *)GetProcAddress(Loaded_SDL20, sym)
#define CloseSDL20Library() { if (Loaded_SDL20) { FreeLibrary(Loaded_SDL20); Loaded_SDL20 = NULL; } }
#define strcpy_fn lstrcpyA
#define sprintf_fn wsprintfA
#elif defined(__OS2__)
#include <os2.h>
#define DIRSEP "\\"
#define SDL20_LIBNAME "SDL2.dll"
#define SDL20_REQUIRED_VER SDL_VERSIONNUM(2,0,9)
#define strcpy_fn strcpy
#define sprintf_fn sprintf
static HMODULE Loaded_SDL20 = NULLHANDLE;
static SDL_bool LoadSDL20Library(void) {
char err[256];
if (DosLoadModule(err, sizeof(err), SDL20_LIBNAME, &Loaded_SDL20) != 0) {
return SDL_FALSE;
}
return SDL_TRUE;
}
static void *LookupSDL20Sym (const char *symname) {
PFN fp;
if (DosQueryProcAddr(Loaded_SDL20, 0, symname, &fp) != 0) return NULL;
return (void *)fp;
}
static void CloseSDL20Library(void) {
if (Loaded_SDL20 != NULLHANDLE) {
DosFreeModule(Loaded_SDL20);
Loaded_SDL20 = NULLHANDLE;
}
}
#elif defined(__APPLE__)
#include <dlfcn.h>
#include <pwd.h>
#include <unistd.h>
#define SDL20_LIBNAME "libSDL2-2.0.0.dylib"
#define SDL20_FRAMEWORK "SDL2.framework/Versions/A/SDL2"
#define SDL20_REQUIRED_VER SDL_VERSIONNUM(2,0,9)
#define strcpy_fn strcpy
#define sprintf_fn sprintf
static void *Loaded_SDL20 = NULL;
#define LookupSDL20Sym(sym) dlsym(Loaded_SDL20, sym)
#define CloseSDL20Library() { if (Loaded_SDL20) { dlclose(Loaded_SDL20); Loaded_SDL20 = NULL; } }
static SDL_bool LoadSDL20Library(void) {
/* I don't know if this is the _right_ order to try, but this seems reasonable */
static const char * const dylib_locations[] = {
"@loader_path/" SDL20_LIBNAME, /* MyApp.app/Contents/MacOS/libSDL2-2.0.0.dylib */
"@loader_path/../Frameworks/" SDL20_FRAMEWORK, /* MyApp.app/Contents/Frameworks/SDL2.framework */
"@executable_path/" SDL20_LIBNAME, /* MyApp.app/Contents/MacOS/libSDL2-2.0.0.dylib */
"@executable_path/../Frameworks/" SDL20_FRAMEWORK, /* MyApp.app/Contents/Frameworks/SDL2.framework */
NULL, /* /Users/username/Library/Frameworks/SDL2.framework */
"/Library/Frameworks" SDL20_FRAMEWORK, /* /Library/Frameworks/SDL2.framework */
SDL20_LIBNAME /* oh well, anywhere the system can see the .dylib (/usr/local/lib or whatever) */
};
int i;
for (i = 0; i < SDL_arraysize(dylib_locations); i++) {
const char *location = dylib_locations[i];
if (location) {
Loaded_SDL20 = dlopen(location, RTLD_LOCAL|RTLD_NOW);
} else { /* hack to mean "try homedir" */
const char *homedir = NULL;
struct passwd *pwent = getpwuid(getuid());
if (pwent) {
homedir = pwent->pw_dir;
}
if (!homedir) {
homedir = getenv("HOME");
}
if (homedir) {
char framework[512];
const int rc = snprintf(framework, sizeof (framework), "%s/Library/Frameworks/" SDL20_FRAMEWORK, homedir);
if ((rc > 0) && (rc < sizeof (framework))) {
Loaded_SDL20 = dlopen(framework, RTLD_LOCAL|RTLD_NOW);
}
}
}
if (Loaded_SDL20) {
return SDL_TRUE;
}
}
return SDL_FALSE; /* didn't find it anywhere reasonable. :( */
}
#elif defined(__unix__)
#include <dlfcn.h>
#define SDL20_LIBNAME "libSDL2-2.0.so.0"
#define SDL20_REQUIRED_VER SDL_VERSIONNUM(2,0,9)
static void *Loaded_SDL20 = NULL;
#define LoadSDL20Library() ((Loaded_SDL20 = dlopen(SDL20_LIBNAME, RTLD_LOCAL|RTLD_NOW)) != NULL)
#define LookupSDL20Sym(sym) dlsym(Loaded_SDL20, sym)
#define CloseSDL20Library() { if (Loaded_SDL20) { dlclose(Loaded_SDL20); Loaded_SDL20 = NULL; } }
#define strcpy_fn strcpy
#define sprintf_fn sprintf
#else
#error Please define your platform.
#endif
#ifndef DIRSEP
#define DIRSEP "/"
#endif
static void *
LoadSDL20Symbol(const char *fn, int *okay)
{
void *retval = NULL;
if (*okay) { /* only bother trying if we haven't previously failed. */
retval = LookupSDL20Sym(fn);