Mercurial > hg > dmlib
annotate dmlib.h @ 341:9f16badc4bd3
License/copyright.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Mon, 15 Oct 2012 18:12:37 +0300 |
parents | 036fde2fd630 |
children | 59045853853d |
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 | |
288
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10 #include <SDL_config.h> |
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11 #include <SDL_endian.h> |
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12 #include <SDL_types.h> |
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13 #include <SDL_mutex.h> |
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14 #include <SDL_video.h> |
0 | 15 #include <stdarg.h> |
16 | |
17 #ifdef DM_USE_ASSERTS | |
18 #include <assert.h> | |
19 #else | |
20 #define assert(NEXPR) // stub | |
21 #endif | |
22 | |
23 #ifdef __cplusplus | |
24 extern "C" { | |
25 #endif | |
26 | |
27 // Defaults | |
341 | 28 #define DM_PROG_AUTHOR "By Matti 'ccr' Hamalainen (C) Copyright 2012 TNSP" |
29 #define DM_PROG_LICENSE "Et all, see README / COPYING for more information." | |
0 | 30 |
31 /* Error codes | |
32 */ | |
33 enum { | |
34 // General error codes | |
35 DMERR_OK = 0, | |
26
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36 DMERR_PROGRESS, // Status OK, but operation in progress |
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37 |
0 | 38 DMERR_FOPEN, |
39 DMERR_FREAD, | |
40 DMERR_FWRITE, | |
41 DMERR_FSEEK, | |
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42 DMERR_NOT_FOUND, // Resource/data not found |
0 | 43 |
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44 DMERR_INVALID_DATA, // Some data was invalid |
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45 DMERR_MALLOC, // Memory allocation failure |
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46 DMERR_ALREADY_INIT, // Resource has already been initialized |
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47 DMERR_INIT_FAIL, // General initialization failure |
0 | 48 DMERR_INVALID_ARGS, |
49 | |
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50 DMERR_NULLPTR, // NULL pointer specified in critical argument |
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51 DMERR_NOT_SUPPORTED,// Operation not supported |
0 | 52 DMERR_OUT_OF_DATA, |
53 DMERR_EXTRA_DATA, | |
54 DMERR_BOUNDS, | |
55 | |
56 // PACK-file subsystem | |
57 DMERR_NOTPACK, | |
58 DMERR_VERSION, | |
59 DMERR_INVALID, | |
60 DMERR_COMPRESSION, | |
61 }; | |
62 | |
63 | |
64 // Resource management defines | |
65 #define DMRES_NAME_LEN 32 | |
66 #define DMRES_DATA_PACK "data.pak" // Name of the data-file | |
67 #define DMRES_DATA_PATH "DATA/" // Sub-directory path | |
68 #define DMRES_RES_FILE "res.txt" // Resource data file | |
69 | |
70 | |
71 /* Define a boolean type | |
72 */ | |
73 #if !defined(FALSE) && !defined(TRUE) && !defined(BOOL) | |
74 typedef enum { FALSE = 0, TRUE = 1 } BOOL; | |
75 #endif | |
76 | |
77 #ifndef BOOL | |
78 #ifdef bool | |
79 #define BOOL bool | |
80 #else | |
81 #define BOOL int | |
82 #endif | |
83 #endif | |
84 | |
85 | |
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86 /* Math constants |
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87 */ |
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88 #define DM_PI 3.14159265358f |
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89 #define DM_PI2 6.28318530718f |
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90 #define DM_E 2.71828182846f |
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91 |
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92 |
0 | 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 | |
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117 #define FP_CONV(a, k) a.dw = (k) |
0 | 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 | |
118
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167 // Macro for swapping two lvalues of same type |
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168 #define DM_SWAP(T, A, B) { if ((B) < (A)) { T swtmp = (B); B = (A); A = swtmp; } } |
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169 |
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170 |
0 | 171 /* Drawing modes used by blitting and some other functions. |
172 */ | |
173 enum | |
174 { | |
175 DMD_NONE = 0x0000, | |
176 DMD_TRANSPARENT = 0x0001, | |
177 DMD_SATURATE = 0x0002, | |
178 | |
179 DMD_ANTIALIAS = 0x0004, | |
180 | |
181 DMD_NMODES = 6 | |
182 }; | |
183 | |
184 | |
185 // Available bitdepths. Not all functions may support every one of these. | |
186 enum | |
187 { | |
188 DMD_8BIT = 0, | |
189 DMD_32BIT, | |
190 | |
191 DMD_NBITDEPTHS | |
192 }; | |
193 | |
194 | |
195 static inline int dmBitsPerPixel2Index(int bpp) | |
196 { | |
197 return (bpp == 8 ? 0 : (bpp == 32 ? 1 : -1)); | |
198 } | |
199 | |
200 | |
201 /* Generic parameter interpolation | |
202 */ | |
203 #define DMM_S_CURVE(t) ((t) * (t) * (3.0f - 2.0f * (t))) | |
204 #define DMM_LERP(t, a, b) ((a) + (t) * ((b) - (a))) | |
205 | |
206 typedef struct | |
207 { | |
208 DMFloat start, end, nsteps; | |
209 } DMLerpContext; | |
210 | |
211 | |
212 void dmLerpInit(DMLerpContext *ctx, DMFloat start, DMFloat end, DMFloat nsteps); | |
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213 DMFloat dmCatmullRom(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3); |
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214 |
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215 |
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216 static inline DMFloat dmClamp10(const DMFloat a) |
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217 { |
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218 return (a < 0.0f ? 0.0f : (a > 1.0f ? 1.0f : a)); |
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219 } |
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220 |
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221 |
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222 static inline int dmClamp(const int v, const int min, const int max) |
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223 { |
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224 return (v < min ? min : (v > max ? max : v)); |
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225 } |
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226 |
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227 |
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228 static inline DMFloat dmLerpSCurve(DMLerpContext *ctx, const DMFloat step) |
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229 { |
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230 const DMFloat n = step / ctx->nsteps; |
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231 const DMFloat v = DMM_S_CURVE(n); |
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232 return DMM_LERP(v, ctx->start, ctx->end); |
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233 } |
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234 |
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235 |
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236 static inline DMFloat dmLerpSCurveClamp(DMLerpContext *ctx, const DMFloat step) |
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237 { |
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238 const DMFloat n = dmClamp10(step / ctx->nsteps); |
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239 const DMFloat v = DMM_S_CURVE(n); |
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240 return DMM_LERP(v, ctx->start, ctx->end); |
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241 } |
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242 |
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243 |
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244 static inline DMFloat dmLerp1(DMLerpContext *ctx, const DMFloat step) |
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245 { |
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246 const DMFloat v = step / ctx->nsteps; |
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247 return DMM_LERP(v, ctx->start, ctx->end); |
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248 } |
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249 |
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250 |
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251 static inline DMFloat dmLerp1Clamp(DMLerpContext *ctx, const DMFloat step) |
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252 { |
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253 const DMFloat v = dmClamp10(step / ctx->nsteps); |
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254 return DMM_LERP(v, ctx->start, ctx->end); |
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255 } |
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256 |
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257 |
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258 static inline DMFloat dmCatmullRomClamp(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3) |
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259 { |
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260 return dmCatmullRom(dmClamp10(t), p0, p1, p2, p3); |
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261 } |
0 | 262 |
263 | |
264 /* Perlin noise | |
265 */ | |
266 void dmPerlinInit(void); | |
267 DMFloat dmPerlinNoise2D(DMFloat x, DMFloat y, DMFloat alpha, DMFloat beta, int n); | |
268 | |
269 | |
270 /* Arbitrary line drawing | |
271 */ | |
272 #ifdef DM_GFX_LINES | |
232
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273 #define DM_HEADER |
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274 #include "dmlinefunc.h" |
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275 |
262
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276 enum |
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277 { |
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278 CLIP_TOP = 1, |
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279 CLIP_BOTTOM = 2, |
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280 CLIP_RIGHT = 4, |
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281 CLIP_LEFT = 8 |
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282 }; |
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283 |
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284 #define DM_CLIP_FUNC dmClipLineCoordsFloat |
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285 #define DM_COORD_TYPE DMFloat |
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286 #include "dmlineclip.h" |
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287 |
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288 #undef DM_HEADER |
0 | 289 #endif |
290 | |
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291 |
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292 /* Various blitting functions |
0 | 293 */ |
294 #ifdef DM_GFX_BLITS | |
295 typedef int (*DMScaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst); | |
296 DMScaledBlitFunc dmGetScaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); | |
297 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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298 |
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299 typedef int (*DMUnscaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, SDL_Surface *dst); |
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300 DMUnscaledBlitFunc dmGetUnscaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); |
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301 int dmUnscaledBlitSurfaceAny(SDL_Surface *src, const int x0, const int y0, SDL_Surface *dst, int mode); |
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302 |
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303 #define DM_HEADER |
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304 #include "dmblitfunc.h" |
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305 #undef DM_HEADER |
0 | 306 #endif |
307 | |
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308 |
0 | 309 /* Misc functions |
310 */ | |
311 #ifdef DM_GFX_MISC | |
312 void dmFillRect(SDL_Surface *screen, int x0, int y0, int x1, int y1, const Uint32 col); | |
313 void dmDrawHLine(SDL_Surface *screen, int x0, int x1, int yc, const Uint32 col); | |
314 void dmDrawVLine(SDL_Surface *screen, int y0, int y1, int xc, const Uint32 col); | |
150
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315 |
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316 void dmDrawBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 ucol, Uint32 dcol); |
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317 void dmFillBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 bgcol, Uint32 ucol, Uint32 dcol); |
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318 |
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319 |
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320 static inline void dmClearSurface(SDL_Surface *screen, const Uint32 col) |
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321 { |
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322 SDL_FillRect(screen, NULL, col); |
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323 } |
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324 |
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325 |
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326 static inline Uint32 dmMapRGB(SDL_Surface *screen, int r, int g, int b) |
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327 { |
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328 return SDL_MapRGB(screen->format, r, g, b); |
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329 } |
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330 |
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331 |
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332 static inline Uint32 dmMapRGBA(SDL_Surface *screen, int r, int g, int b, int a) |
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333 { |
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334 return SDL_MapRGBA(screen->format, r, g, b, a); |
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335 } |
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336 |
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337 |
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338 static inline int dmDirectBlitSurface(SDL_Surface *bmp, SDL_Surface *screen) |
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339 { |
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340 return SDL_BlitSurface(bmp, NULL, screen, NULL); |
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341 } |
0 | 342 #endif |
343 | |
344 | |
345 /* Global variables | |
346 */ | |
347 extern char *dmProgName, | |
348 *dmProgDesc, | |
349 *dmProgVersion, | |
350 *dmProgAuthor, | |
351 *dmProgLicense; | |
352 | |
353 extern int dmVerbosity; | |
354 void dmInitProg(char *name, char *desc, char *version, char *author, char *license); | |
355 void dmPrintBanner(FILE *outFile, const char *name, const char *usage); | |
356 | |
357 void dmMsgVA(int level, const char *fmt, va_list ap); | |
358 void dmMsg(int level, const char *fmt, ...); | |
359 void dmPrintVA(int level, const char *fmt, va_list ap); | |
360 void dmPrint(int level, const char *fmt, ...); | |
361 void dmErrorVA(const char *fmt, va_list); | |
362 void dmError(const char *fmt, ...); | |
363 | |
364 void * dmMalloc(size_t); | |
365 void * dmMalloc0(size_t); | |
366 void * dmRealloc(void *, size_t); | |
367 void * dmCalloc(size_t, size_t); | |
368 void dmFree(void *); | |
369 | |
370 BOOL dmGetIntVal(const char *s, int *i); | |
371 | |
372 int dmGetErrno(); | |
373 const char *dmErrorStr(int error); | |
374 | |
375 char * dm_strdup(const char *); | |
376 char * dm_strdup_vprintf(const char *, va_list); | |
377 char * dm_strdup_printf(const char *, ...); | |
378 | |
379 | |
294
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380 /* Mutexes |
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381 */ |
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382 #ifdef DM_MUTEX_DEBUG |
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383 |
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384 typedef struct |
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385 { |
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386 BOOL used; |
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387 Uint32 id; |
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388 int state; |
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389 } DMMutexLock; |
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390 |
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391 typedef struct |
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392 { |
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393 char *cr_file; |
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394 int cr_line; |
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395 SDL_mutex *m; |
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396 DMMutexLock locks[8]; |
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397 } DMMutex; |
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398 |
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399 #define dmMutexLock(x) dmDOMutexLock(x, __FILE__, (int) __LINE__) |
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400 #define dmMutexUnlock(x) dmDOMutexUnlock(x, __FILE__, (int) __LINE__) |
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401 #define dmCreateMutex(x) dmDOCreateMutex(__FILE__, (int) __LINE__) |
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402 |
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403 int dmDOMutexLock(DMMutex *mutex, const char *file, const int line); |
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404 int dmDOMutexUnlock(DMMutex *mutex, const char *file, const int line); |
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405 DMMutex * dmDOCreateMutex(const char *file, const int line); |
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406 void dmDestroyMutex(DMMutex *mutex); |
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407 |
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408 #else |
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409 #define DMMutex SDL_mutex |
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410 #define dmCreateMutex() SDL_CreateMutex() |
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411 #define dmDestroyMutex(x) SDL_DestroyMutex(x) |
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412 #define dmMutexLock(x) SDL_mutexP(x) |
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413 #define dmMutexUnlock(x) SDL_mutexV(x) |
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414 #endif |
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415 |
0 | 416 /* Endianess swapping macros |
417 */ | |
418 #define DM_SWAP_16_LE_BE(value) ((Uint16) ( \ | |
419 (Uint16) ((Uint16) (value) >> 8) | \ | |
420 (Uint16) ((Uint16) (value) << 8)) ) | |
421 | |
422 | |
423 #define DM_SWAP_32_LE_BE(value) ((Uint32) ( \ | |
424 (((Uint32) (value) & (Uint32) 0x000000ffU) << 24) | \ | |
425 (((Uint32) (value) & (Uint32) 0x0000ff00U) << 8) | \ | |
426 (((Uint32) (value) & (Uint32) 0x00ff0000U) >> 8) | \ | |
427 (((Uint32) (value) & (Uint32) 0xff000000U) >> 24))) | |
428 | |
429 #ifdef DM_HAVE_64BIT | |
430 #define DM_SWAP_64_LE_BE(value) ((Uint64) ( \ | |
431 (((Uint64) (value) & (Uint64) 0x00000000000000ffULL) << 56) | \ | |
432 (((Uint64) (value) & (Uint64) 0x000000000000ff00ULL) << 40) | \ | |
433 (((Uint64) (value) & (Uint64) 0x0000000000ff0000ULL) << 24) | \ | |
434 (((Uint64) (value) & (Uint64) 0x00000000ff000000ULL) << 8) | \ | |
435 (((Uint64) (value) & (Uint64) 0x000000ff00000000ULL) >> 8) | \ | |
436 (((Uint64) (value) & (Uint64) 0x0000ff0000000000ULL) >> 24) | \ | |
437 (((Uint64) (value) & (Uint64) 0x00ff000000000000ULL) >> 40) | \ | |
438 (((Uint64) (value) & (Uint64) 0xff00000000000000ULL) >> 56))) | |
439 #endif | |
440 | |
441 /* Macros that swap only when needed ... | |
442 */ | |
443 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
444 # define DM_LE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) | |
445 # define DM_LE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
446 # define DM_NATIVE_TO_LE16(value) DM_SWAP_16_LE_BE(value) | |
447 # define DM_NATIVE_TO_LE32(value) DM_SWAP_32_LE_BE(value) | |
448 | |
449 # define DM_BE16_TO_NATIVE(value) ((Uint16) (value)) | |
450 # define DM_BE32_TO_NATIVE(value) ((Uint32) (value)) | |
451 # define DM_NATIVE_TO_BE16(value) ((Uint16) (value)) | |
452 # define DM_NATIVE_TO_BE32(value) ((Uint32) (value)) | |
453 | |
454 # ifdef DM_HAVE_64BIT | |
455 # define DM_LE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) | |
456 # define DM_NATIVE_TO_LE64(value) DM_SWAP_64_LE_BE(value) | |
457 # define DM_BE64_TO_NATIVE(value) ((Uint64) (value)) | |
458 # define DM_NATIVE_TO_BE64(value) ((Uint64) (value)) | |
459 # endif | |
460 | |
461 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
462 | |
463 # define DM_LE16_TO_NATIVE(value) ((Uint16) (value)) | |
464 # define DM_LE32_TO_NATIVE(value) ((Uint32) (value)) | |
465 # define DM_NATIVE_TO_LE16(value) ((Uint16) (value)) | |
466 # define DM_NATIVE_TO_LE32(value) ((Uint32) (value)) | |
467 | |
468 # define DM_BE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) | |
469 # define DM_BE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
470 # define DM_NATIVE_TO_BE16(value) DM_SWAP_16_LE_BE(value) | |
471 # define DM_NATIVE_TO_BE32(value) DM_SWAP_32_LE_BE(value) | |
472 | |
473 # ifdef DM_HAVE_64BIT | |
474 # define DM_LE64_TO_NATIVE(value) ((Uint64) (value)) | |
475 # define DM_NATIVE_TO_LE64(value) ((Uint64) (value)) | |
476 # define DM_BE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) | |
477 # define DM_NATIVE_TO_BE64(value) DM_SWAP_64_LE_BE(value) | |
478 # endif | |
479 #endif | |
480 | |
481 | |
482 #ifdef __cplusplus | |
483 } | |
484 #endif | |
485 #endif // DMLIB_H |