Mercurial > hg > dmlib
annotate dmlib.h @ 60:f28cd66356f6
Initial work for bitmapped fonts and text drawing. Also moved TTF header
stuff to dmtext.h.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Mon, 01 Oct 2012 09:46:56 +0300 |
parents | f3407a58e01e |
children | 1ab3fd8b9afc |
rev | line source |
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0 | 1 /* |
2 * DMLib | |
3 * -- Main header file | |
4 * Programmed and designed by Matti 'ccr' Hamalainen | |
5 * (C) Copyright 2011 Tecnic Software productions (TNSP) | |
6 */ | |
7 #ifndef DMLIB_H | |
8 #define DMLIB_H | |
9 | |
10 #include <SDL.h> | |
11 #include <stdarg.h> | |
12 | |
13 #ifdef DM_USE_ASSERTS | |
14 #include <assert.h> | |
15 #else | |
16 #define assert(NEXPR) // stub | |
17 #endif | |
18 | |
19 #ifdef __cplusplus | |
20 extern "C" { | |
21 #endif | |
22 | |
23 // Defaults | |
24 //#define DM_PROG_AUTHOR "By Matti 'ccr' Hmlinen (C) Copyright 2012 TNSP" | |
25 //#define DM_PROG_LICENSE "This software is licensed under GNU GPL version 2" | |
26 | |
27 #define DM_PROG_AUTHOR "" | |
28 #define DM_PROG_LICENSE "" | |
29 | |
30 /* Error codes | |
31 */ | |
32 enum { | |
33 // General error codes | |
34 DMERR_OK = 0, | |
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35 DMERR_PROGRESS, // Status OK, but operation in progress |
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36 |
0 | 37 DMERR_FOPEN, |
38 DMERR_FREAD, | |
39 DMERR_FWRITE, | |
40 DMERR_FSEEK, | |
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41 DMERR_NOT_FOUND, // Resource/data not found |
0 | 42 |
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43 DMERR_INVALID_DATA, // Some data was invalid |
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44 DMERR_MALLOC, // Memory allocation failure |
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45 DMERR_ALREADY_INIT, // Resource has already been initialized |
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46 DMERR_INIT_FAIL, // General initialization failure |
0 | 47 DMERR_INVALID_ARGS, |
48 | |
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49 DMERR_NULLPTR, // NULL pointer specified in critical argument |
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50 DMERR_NOT_SUPPORTED,// Operation not supported |
0 | 51 DMERR_OUT_OF_DATA, |
52 DMERR_EXTRA_DATA, | |
53 DMERR_BOUNDS, | |
54 | |
55 // PACK-file subsystem | |
56 DMERR_NOTPACK, | |
57 DMERR_VERSION, | |
58 DMERR_INVALID, | |
59 DMERR_COMPRESSION, | |
60 }; | |
61 | |
62 | |
63 // Resource management defines | |
64 #define DMRES_NAME_LEN 32 | |
65 #define DMRES_DATA_PACK "data.pak" // Name of the data-file | |
66 #define DMRES_DATA_PATH "DATA/" // Sub-directory path | |
67 #define DMRES_RES_FILE "res.txt" // Resource data file | |
68 | |
69 | |
70 // Mutexes | |
71 #define DMMutex SDL_mutex | |
72 #define dmCreateMutex() SDL_CreateMutex() | |
73 #define dmDestroyMutex(x) SDL_DestroyMutex(x) | |
74 #define dmMutexLock(x) SDL_mutexP(x) | |
75 #define dmMutexUnlock(x) SDL_mutexV(x) | |
76 | |
77 | |
78 /* Define a boolean type | |
79 */ | |
80 #if !defined(FALSE) && !defined(TRUE) && !defined(BOOL) | |
81 typedef enum { FALSE = 0, TRUE = 1 } BOOL; | |
82 #endif | |
83 | |
84 #ifndef BOOL | |
85 #ifdef bool | |
86 #define BOOL bool | |
87 #else | |
88 #define BOOL int | |
89 #endif | |
90 #endif | |
91 | |
92 | |
93 /* Fixed point math type | |
94 */ | |
95 typedef union | |
96 { | |
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97 Sint64 dw; |
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98 Sint32 w[2]; |
0 | 99 } DMFixedPoint; |
100 | |
101 | |
102 typedef union | |
103 { | |
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104 Sint32 dw; |
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105 Sint16 w[2]; |
0 | 106 } DMFixedPoint32; |
107 | |
108 | |
109 /* Macros for fixed point math | |
110 */ | |
111 #if __GNUC__ >= 3 | |
112 # define FP_SET(a, k) a.dw = k ## ULL | |
113 #else | |
114 # define FP_SET(a, k) a.dw = k | |
115 #endif | |
116 | |
117 #define FP_CONV(a, k) a.dw = k | |
118 | |
119 #ifndef SDL_BYTEORDER | |
120 # error Undefined byteorder! | |
121 #endif | |
122 | |
123 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
124 # define FP_SETH(a, k) a.w[0] = (k) | |
125 # define FP_SETL(a, k) a.w[1] = (k) | |
126 # define FP_SETHL(a, h, l) { a.w[0] = (h); a.w[1] = (l); } | |
127 # define FP_GETH(a) a.w[0] | |
128 # define FP_GETL(a) a.w[1] | |
129 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
130 # define FP_SETH(a, k) a.w[1] = (k) | |
131 # define FP_SETL(a, k) a.w[0] = (k) | |
132 # define FP_SETHL(a, h, l) { a.w[1] = (h); a.w[0] = (l); } | |
133 # define FP_GETH(a) a.w[1] | |
134 # define FP_GETL(a) a.w[0] | |
135 #else | |
136 # error Unsupported byte order! | |
137 #endif | |
138 | |
139 #define FP_PRINTF(a) printf("%.8x:%.8x", FP_GETH(a), FP_GETL(a)) | |
140 #define FP_PRINTF32(a) printf("%.4x:%.4x", FP_GETH(a), FP_GETL(a)) | |
141 | |
142 #define FP_ADD(a, b) a.dw += b.dw | |
143 #define FP_SUB(a, b) a.dw -= b.dw | |
144 #define FP_ADD_R(r, a, b) r.dw = a.dw + b.dw | |
145 #define FP_SUB_R(r, a, b) r.dw = a.dw - b.dw | |
146 #define FP_DIV(a, b) a.dw /= b.dw | |
147 #define FP_MUL(a, b) a.dw *= b.dw | |
148 #define FP_DIV_R(r, a, b) r.dw = (a.dw / b.dw) | |
149 #define FP_MUL_R(r, a, b) r.dw = (a.dw * b.dw) | |
150 | |
151 | |
152 /* Miscellaneous types | |
153 */ | |
154 typedef struct | |
155 { | |
156 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
157 Uint8 a,g,b,r; | |
158 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
159 Uint8 r,g,b,a; | |
160 #endif | |
161 } DMRGBA32; | |
162 | |
163 | |
164 typedef float DMFloat; | |
165 | |
166 | |
167 /* Drawing modes used by blitting and some other functions. | |
168 */ | |
169 enum | |
170 { | |
171 DMD_NONE = 0x0000, | |
172 DMD_TRANSPARENT = 0x0001, | |
173 DMD_SATURATE = 0x0002, | |
174 | |
175 DMD_ANTIALIAS = 0x0004, | |
176 | |
177 DMD_NMODES = 6 | |
178 }; | |
179 | |
180 | |
181 // Available bitdepths. Not all functions may support every one of these. | |
182 enum | |
183 { | |
184 DMD_8BIT = 0, | |
185 DMD_32BIT, | |
186 | |
187 DMD_NBITDEPTHS | |
188 }; | |
189 | |
190 | |
191 static inline int dmBitsPerPixel2Index(int bpp) | |
192 { | |
193 return (bpp == 8 ? 0 : (bpp == 32 ? 1 : -1)); | |
194 } | |
195 | |
196 | |
197 /* Generic parameter interpolation | |
198 */ | |
199 #define DMM_S_CURVE(t) ((t) * (t) * (3.0f - 2.0f * (t))) | |
200 #define DMM_LERP(t, a, b) ((a) + (t) * ((b) - (a))) | |
201 | |
202 typedef struct | |
203 { | |
204 DMFloat start, end, nsteps; | |
205 } DMLerpContext; | |
206 | |
207 | |
208 void dmLerpInit(DMLerpContext *ctx, DMFloat start, DMFloat end, DMFloat nsteps); | |
209 DMFloat dmLerpSCurve(DMLerpContext *ctx, const DMFloat step); | |
210 DMFloat dmLerp1(DMLerpContext *ctx, const DMFloat step); | |
211 DMFloat dmCatmull_Rom(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3); | |
212 | |
213 | |
214 /* Perlin noise | |
215 */ | |
216 void dmPerlinInit(void); | |
217 DMFloat dmPerlinNoise2D(DMFloat x, DMFloat y, DMFloat alpha, DMFloat beta, int n); | |
218 | |
219 | |
220 /* Arbitrary line drawing | |
221 */ | |
222 #ifdef DM_GFX_LINES | |
223 typedef int (*DMDrawLineFunc)(SDL_Surface *src, int x0, int y0, int x1, int y1, const Uint32 color); | |
224 DMDrawLineFunc dmGetDrawLineFunc(SDL_PixelFormat *dst, int mode); | |
225 int dmDrawLineAny(SDL_Surface *src, int x0, int y0, int x1, int y1, const Uint32 color, int mode); | |
226 #endif | |
227 | |
228 /* Scaled blitting functions | |
229 */ | |
230 #ifdef DM_GFX_BLITS | |
231 typedef int (*DMScaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst); | |
232 | |
233 DMScaledBlitFunc dmGetScaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); | |
234 int dmScaledBlitSurfaceAny(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst, int mode); | |
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235 |
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236 int dmScaledBlitSurface32to32TransparentX(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst); |
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237 int dmScaledBlitSurface32to32TransparentGA(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst, Uint32 alpha); |
0 | 238 #endif |
239 | |
240 /* Misc functions | |
241 */ | |
242 #ifdef DM_GFX_MISC | |
243 void dmFillRect(SDL_Surface *screen, int x0, int y0, int x1, int y1, const Uint32 col); | |
244 void dmDrawHLine(SDL_Surface *screen, int x0, int x1, int yc, const Uint32 col); | |
245 void dmDrawVLine(SDL_Surface *screen, int y0, int y1, int xc, const Uint32 col); | |
246 void dmDrawBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 bgcol, Uint32 ucol, Uint32 dcol); | |
247 void dmClearSurface(SDL_Surface *screen, const Uint32 col); | |
248 Uint32 dmMapRGB(SDL_Surface *screen, int r, int g, int b); | |
249 Uint32 dmMapRGBA(SDL_Surface *screen, int r, int g, int b, int a); | |
250 int dmDirectBlitSurface(SDL_Surface *bmp, SDL_Surface *screen); | |
251 #endif | |
252 | |
253 | |
254 /* Global variables | |
255 */ | |
256 extern char *dmProgName, | |
257 *dmProgDesc, | |
258 *dmProgVersion, | |
259 *dmProgAuthor, | |
260 *dmProgLicense; | |
261 | |
262 extern int dmVerbosity; | |
263 void dmInitProg(char *name, char *desc, char *version, char *author, char *license); | |
264 void dmPrintBanner(FILE *outFile, const char *name, const char *usage); | |
265 | |
266 void dmMsgVA(int level, const char *fmt, va_list ap); | |
267 void dmMsg(int level, const char *fmt, ...); | |
268 void dmPrintVA(int level, const char *fmt, va_list ap); | |
269 void dmPrint(int level, const char *fmt, ...); | |
270 void dmErrorVA(const char *fmt, va_list); | |
271 void dmError(const char *fmt, ...); | |
272 | |
273 void * dmMalloc(size_t); | |
274 void * dmMalloc0(size_t); | |
275 void * dmRealloc(void *, size_t); | |
276 void * dmCalloc(size_t, size_t); | |
277 void dmFree(void *); | |
278 | |
279 BOOL dmGetIntVal(const char *s, int *i); | |
280 | |
281 int dmGetErrno(); | |
282 const char *dmErrorStr(int error); | |
283 | |
284 char * dm_strdup(const char *); | |
285 char * dm_strdup_vprintf(const char *, va_list); | |
286 char * dm_strdup_printf(const char *, ...); | |
287 | |
288 | |
289 /* Endianess swapping macros | |
290 */ | |
291 #define DM_SWAP_16_LE_BE(value) ((Uint16) ( \ | |
292 (Uint16) ((Uint16) (value) >> 8) | \ | |
293 (Uint16) ((Uint16) (value) << 8)) ) | |
294 | |
295 | |
296 #define DM_SWAP_32_LE_BE(value) ((Uint32) ( \ | |
297 (((Uint32) (value) & (Uint32) 0x000000ffU) << 24) | \ | |
298 (((Uint32) (value) & (Uint32) 0x0000ff00U) << 8) | \ | |
299 (((Uint32) (value) & (Uint32) 0x00ff0000U) >> 8) | \ | |
300 (((Uint32) (value) & (Uint32) 0xff000000U) >> 24))) | |
301 | |
302 #ifdef DM_HAVE_64BIT | |
303 #define DM_SWAP_64_LE_BE(value) ((Uint64) ( \ | |
304 (((Uint64) (value) & (Uint64) 0x00000000000000ffULL) << 56) | \ | |
305 (((Uint64) (value) & (Uint64) 0x000000000000ff00ULL) << 40) | \ | |
306 (((Uint64) (value) & (Uint64) 0x0000000000ff0000ULL) << 24) | \ | |
307 (((Uint64) (value) & (Uint64) 0x00000000ff000000ULL) << 8) | \ | |
308 (((Uint64) (value) & (Uint64) 0x000000ff00000000ULL) >> 8) | \ | |
309 (((Uint64) (value) & (Uint64) 0x0000ff0000000000ULL) >> 24) | \ | |
310 (((Uint64) (value) & (Uint64) 0x00ff000000000000ULL) >> 40) | \ | |
311 (((Uint64) (value) & (Uint64) 0xff00000000000000ULL) >> 56))) | |
312 #endif | |
313 | |
314 /* Macros that swap only when needed ... | |
315 */ | |
316 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
317 # define DM_LE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) | |
318 # define DM_LE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
319 # define DM_NATIVE_TO_LE16(value) DM_SWAP_16_LE_BE(value) | |
320 # define DM_NATIVE_TO_LE32(value) DM_SWAP_32_LE_BE(value) | |
321 | |
322 # define DM_BE16_TO_NATIVE(value) ((Uint16) (value)) | |
323 # define DM_BE32_TO_NATIVE(value) ((Uint32) (value)) | |
324 # define DM_NATIVE_TO_BE16(value) ((Uint16) (value)) | |
325 # define DM_NATIVE_TO_BE32(value) ((Uint32) (value)) | |
326 | |
327 # ifdef DM_HAVE_64BIT | |
328 # define DM_LE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) | |
329 # define DM_NATIVE_TO_LE64(value) DM_SWAP_64_LE_BE(value) | |
330 # define DM_BE64_TO_NATIVE(value) ((Uint64) (value)) | |
331 # define DM_NATIVE_TO_BE64(value) ((Uint64) (value)) | |
332 # endif | |
333 | |
334 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
335 | |
336 # define DM_LE16_TO_NATIVE(value) ((Uint16) (value)) | |
337 # define DM_LE32_TO_NATIVE(value) ((Uint32) (value)) | |
338 # define DM_NATIVE_TO_LE16(value) ((Uint16) (value)) | |
339 # define DM_NATIVE_TO_LE32(value) ((Uint32) (value)) | |
340 | |
341 # define DM_BE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) | |
342 # define DM_BE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
343 # define DM_NATIVE_TO_BE16(value) DM_SWAP_16_LE_BE(value) | |
344 # define DM_NATIVE_TO_BE32(value) DM_SWAP_32_LE_BE(value) | |
345 | |
346 # ifdef DM_HAVE_64BIT | |
347 # define DM_LE64_TO_NATIVE(value) ((Uint64) (value)) | |
348 # define DM_NATIVE_TO_LE64(value) ((Uint64) (value)) | |
349 # define DM_BE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) | |
350 # define DM_NATIVE_TO_BE64(value) DM_SWAP_64_LE_BE(value) | |
351 # endif | |
352 #endif | |
353 | |
354 | |
355 #ifdef __cplusplus | |
356 } | |
357 #endif | |
358 #endif // DMLIB_H |