Mercurial > hg > dmlib
annotate src/dmlib.h @ 889:e5fde730b4fa
Move perlin noise functions to dmperlin.[ch] and make the API re-entrant.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Wed, 04 Feb 2015 23:45:21 +0200 |
| parents | 26ea35e914ca |
| children | 03bda6477ad4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * DMLib | |
| 3 * -- Main header file | |
| 4 * Programmed and designed by Matti 'ccr' Hamalainen | |
| 863 | 5 * (C) Copyright 2011-2015 Tecnic Software productions (TNSP) |
| 0 | 6 */ |
| 7 #ifndef DMLIB_H | |
| 8 #define DMLIB_H | |
| 9 | |
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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_thread.h> |
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15 #include <SDL_video.h> |
| 0 | 16 #include <stdarg.h> |
| 17 | |
| 18 #ifdef DM_USE_ASSERTS | |
| 770 | 19 # include <assert.h> |
| 0 | 20 #else |
| 770 | 21 # define assert(NEXPR) // stub |
| 0 | 22 #endif |
| 23 | |
| 24 #ifdef __cplusplus | |
| 25 extern "C" { | |
| 26 #endif | |
| 27 | |
| 28 // Defaults | |
| 805 | 29 #define DM_PROG_AUTHOR "By Matti 'ccr' Hamalainen (C) Copyright 2014 TNSP" |
| 341 | 30 #define DM_PROG_LICENSE "Et all, see README / COPYING for more information." |
| 0 | 31 |
| 32 /* Error codes | |
| 33 */ | |
| 34 enum { | |
| 770 | 35 // General error codes |
| 36 DMERR_OK = 0, | |
| 37 DMERR_PROGRESS, // Status OK, but operation in progress | |
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38 |
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39 DMERR_INTERNAL, |
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40 |
| 770 | 41 DMERR_FOPEN, |
| 42 DMERR_FREAD, | |
| 43 DMERR_FWRITE, | |
| 44 DMERR_FSEEK, | |
| 45 DMERR_NOT_FOUND, // Resource/data not found | |
| 0 | 46 |
| 770 | 47 DMERR_INVALID_DATA, // Some data was invalid |
| 48 DMERR_MALLOC, // Memory allocation failure | |
| 49 DMERR_ALREADY_INIT, // Resource has already been initialized | |
| 50 DMERR_INIT_FAIL, // General initialization failure | |
| 51 DMERR_INVALID_ARGS, | |
| 0 | 52 |
| 770 | 53 DMERR_NULLPTR, // NULL pointer specified in critical argument |
| 54 DMERR_NOT_SUPPORTED,// Operation not supported | |
| 55 DMERR_OUT_OF_DATA, | |
| 56 DMERR_EXTRA_DATA, | |
| 57 DMERR_BOUNDS, | |
| 0 | 58 |
| 770 | 59 // PACK-file subsystem |
| 60 DMERR_NOTPACK, | |
| 61 DMERR_VERSION, | |
| 62 DMERR_INVALID, | |
| 63 DMERR_COMPRESSION, | |
| 0 | 64 }; |
| 65 | |
| 813 | 66 // Directory/path separator stuff |
| 67 #define DM_DIR_SEPARATOR '/' | |
| 68 | |
| 0 | 69 |
| 70 // Resource management defines | |
| 71 #define DMRES_NAME_LEN 32 | |
| 72 #define DMRES_DATA_PACK "data.pak" // Name of the data-file | |
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73 #define DMRES_DATA_PATH "data/" // Sub-directory path |
| 0 | 74 #define DMRES_RES_FILE "res.txt" // Resource data file |
| 75 | |
| 76 | |
| 77 /* Define a boolean type | |
| 78 */ | |
| 79 #if !defined(FALSE) && !defined(TRUE) && !defined(BOOL) | |
| 80 typedef enum { FALSE = 0, TRUE = 1 } BOOL; | |
| 81 #endif | |
| 82 | |
| 83 #ifndef BOOL | |
| 770 | 84 # ifdef bool |
| 85 # define BOOL bool | |
| 86 # else | |
| 87 # define BOOL int | |
| 88 # endif | |
| 0 | 89 #endif |
| 90 | |
| 91 | |
|
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92 /* Math constants |
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93 */ |
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94 #define DM_PI 3.14159265358f |
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95 #define DM_PI2 6.28318530718f |
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96 #define DM_E 2.71828182846f |
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97 |
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98 |
| 0 | 99 /* Fixed point math type |
| 100 */ | |
| 101 typedef union | |
| 102 { | |
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103 Sint64 dw; |
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104 Sint32 w[2]; |
| 0 | 105 } DMFixedPoint; |
| 106 | |
| 107 | |
| 108 typedef union | |
| 109 { | |
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110 Sint32 dw; |
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111 Sint16 w[2]; |
| 0 | 112 } DMFixedPoint32; |
| 113 | |
| 114 | |
| 115 /* Macros for fixed point math | |
| 116 */ | |
| 117 #if __GNUC__ >= 3 | |
| 118 # define FP_SET(a, k) a.dw = k ## ULL | |
| 119 #else | |
| 120 # define FP_SET(a, k) a.dw = k | |
| 121 #endif | |
| 122 | |
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123 #define FP_CONV(a, k) a.dw = (k) |
| 0 | 124 |
| 125 #ifndef SDL_BYTEORDER | |
| 126 # error Undefined byteorder! | |
| 127 #endif | |
| 128 | |
| 129 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
| 130 # define FP_SETH(a, k) a.w[0] = (k) | |
| 131 # define FP_SETL(a, k) a.w[1] = (k) | |
| 132 # define FP_SETHL(a, h, l) { a.w[0] = (h); a.w[1] = (l); } | |
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133 # define FP_GETH32(a) a.w[0] |
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134 # define FP_GETL32(a) a.w[1] |
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135 # define FP_GETH16(a) a.w[0] |
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136 # define FP_GETL16(a) a.w[1] |
| 0 | 137 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) |
| 138 # define FP_SETH(a, k) a.w[1] = (k) | |
| 139 # define FP_SETL(a, k) a.w[0] = (k) | |
| 140 # define FP_SETHL(a, h, l) { a.w[1] = (h); a.w[0] = (l); } | |
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141 # define FP_GETH32(a) a.w[1] |
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142 # define FP_GETL32(a) a.w[0] |
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143 # define FP_GETH16(a) a.w[1] |
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144 # define FP_GETL16(a) a.w[0] |
| 0 | 145 #else |
| 146 # error Unsupported byte order! | |
| 147 #endif | |
| 148 | |
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149 #define FP_PRINTF64(a) printf("%.8x:%.8x", FP_GETH32(a), FP_GETL32(a)) |
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150 #define FP_PRINTF32(a) printf("%.4x:%.4x", FP_GETH16(a), FP_GETL16(a)) |
| 0 | 151 |
| 152 #define FP_ADD(a, b) a.dw += b.dw | |
| 153 #define FP_SUB(a, b) a.dw -= b.dw | |
| 154 #define FP_ADD_R(r, a, b) r.dw = a.dw + b.dw | |
| 155 #define FP_SUB_R(r, a, b) r.dw = a.dw - b.dw | |
| 156 #define FP_DIV(a, b) a.dw /= b.dw | |
| 157 #define FP_MUL(a, b) a.dw *= b.dw | |
| 158 #define FP_DIV_R(r, a, b) r.dw = (a.dw / b.dw) | |
| 159 #define FP_MUL_R(r, a, b) r.dw = (a.dw * b.dw) | |
| 160 | |
| 161 | |
| 162 /* Miscellaneous types | |
| 163 */ | |
| 164 typedef struct | |
| 165 { | |
| 166 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
| 167 Uint8 a,g,b,r; | |
| 168 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
| 169 Uint8 r,g,b,a; | |
| 170 #endif | |
| 171 } DMRGBA32; | |
| 172 | |
| 173 | |
| 174 typedef float DMFloat; | |
| 175 | |
| 176 | |
|
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177 // Macro for swapping two lvalues of same type |
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178 #define DM_SWAP(T, A, B) { if ((B) < (A)) { T swtmp = (B); B = (A); A = swtmp; } } |
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179 |
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180 |
| 0 | 181 /* Drawing modes used by blitting and some other functions. |
| 182 */ | |
| 183 enum | |
| 184 { | |
| 185 DMD_NONE = 0x0000, | |
| 186 DMD_TRANSPARENT = 0x0001, | |
| 187 DMD_SATURATE = 0x0002, | |
| 188 | |
| 189 DMD_ANTIALIAS = 0x0004, | |
| 190 | |
| 191 DMD_NMODES = 6 | |
| 192 }; | |
| 193 | |
| 194 | |
| 195 // Available bitdepths. Not all functions may support every one of these. | |
| 196 enum | |
| 197 { | |
| 198 DMD_8BIT = 0, | |
| 199 DMD_32BIT, | |
| 200 | |
| 201 DMD_NBITDEPTHS | |
| 202 }; | |
| 203 | |
| 204 | |
| 205 static inline int dmBitsPerPixel2Index(int bpp) | |
| 206 { | |
| 207 return (bpp == 8 ? 0 : (bpp == 32 ? 1 : -1)); | |
| 208 } | |
| 209 | |
| 210 | |
| 211 /* Generic parameter interpolation | |
| 212 */ | |
| 213 #define DMM_S_CURVE(t) ((t) * (t) * (3.0f - 2.0f * (t))) | |
| 214 #define DMM_LERP(t, a, b) ((a) + (t) * ((b) - (a))) | |
| 215 | |
| 216 typedef struct | |
| 217 { | |
| 218 DMFloat start, end, nsteps; | |
| 219 } DMLerpContext; | |
| 220 | |
| 221 | |
| 222 void dmLerpInit(DMLerpContext *ctx, DMFloat start, DMFloat end, DMFloat nsteps); | |
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223 DMFloat dmCatmullRom(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3); |
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224 |
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225 |
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226 static inline DMFloat dmClamp10(const DMFloat a) |
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227 { |
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228 return (a < 0.0f ? 0.0f : (a > 1.0f ? 1.0f : a)); |
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229 } |
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230 |
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231 |
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232 static inline int dmClamp(const int v, const int min, const int max) |
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233 { |
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234 return (v < min ? min : (v > max ? max : v)); |
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235 } |
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236 |
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237 |
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238 static inline DMFloat dmLerpSCurve(DMLerpContext *ctx, const DMFloat step) |
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239 { |
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240 const DMFloat n = step / ctx->nsteps; |
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241 const DMFloat v = DMM_S_CURVE(n); |
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242 return DMM_LERP(v, ctx->start, ctx->end); |
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243 } |
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244 |
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245 |
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246 static inline DMFloat dmLerpSCurveClamp(DMLerpContext *ctx, const DMFloat step) |
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247 { |
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248 const DMFloat n = dmClamp10(step / ctx->nsteps); |
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249 const DMFloat v = DMM_S_CURVE(n); |
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250 return DMM_LERP(v, ctx->start, ctx->end); |
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251 } |
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252 |
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253 |
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254 static inline DMFloat dmLerp1(DMLerpContext *ctx, const DMFloat step) |
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255 { |
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256 const DMFloat v = step / ctx->nsteps; |
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257 return DMM_LERP(v, ctx->start, ctx->end); |
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258 } |
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259 |
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260 |
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261 static inline DMFloat dmLerp1Clamp(DMLerpContext *ctx, const DMFloat step) |
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262 { |
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263 const DMFloat v = dmClamp10(step / ctx->nsteps); |
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264 return DMM_LERP(v, ctx->start, ctx->end); |
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265 } |
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266 |
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267 |
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268 static inline DMFloat dmCatmullRomClamp(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3) |
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269 { |
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270 return dmCatmullRom(dmClamp10(t), p0, p1, p2, p3); |
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271 } |
| 0 | 272 |
| 273 | |
| 274 /* Arbitrary line drawing | |
| 275 */ | |
| 276 #ifdef DM_GFX_LINES | |
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277 #define DM_HEADER |
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278 #include "dmlinefunc.h" |
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279 |
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262
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280 enum |
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281 { |
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282 CLIP_TOP = 1, |
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283 CLIP_BOTTOM = 2, |
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284 CLIP_RIGHT = 4, |
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285 CLIP_LEFT = 8 |
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286 }; |
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287 |
|
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288 #define DM_CLIP_FUNC dmClipLineCoordsFloat |
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289 #define DM_COORD_TYPE DMFloat |
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290 #include "dmlineclip.h" |
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291 |
|
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292 #undef DM_HEADER |
| 0 | 293 #endif |
| 294 | |
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295 |
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296 /* Various blitting functions |
| 0 | 297 */ |
| 298 #ifdef DM_GFX_BLITS | |
| 299 typedef int (*DMScaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst); | |
| 300 DMScaledBlitFunc dmGetScaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); | |
| 301 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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302 |
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303 typedef int (*DMUnscaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, SDL_Surface *dst); |
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304 DMUnscaledBlitFunc dmGetUnscaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); |
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305 int dmUnscaledBlitSurfaceAny(SDL_Surface *src, const int x0, const int y0, SDL_Surface *dst, int mode); |
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306 |
|
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307 SDL_Surface *dmConvertScaledSurface(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags, const int dwidth, const int dheight); |
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308 |
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309 |
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310 #define DM_HEADER |
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311 #include "dmblitfunc.h" |
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312 #undef DM_HEADER |
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313 |
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314 #endif // DM_GFX_BLITS |
| 0 | 315 |
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316 |
| 0 | 317 /* Misc functions |
| 318 */ | |
| 319 #ifdef DM_GFX_MISC | |
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320 |
| 0 | 321 void dmFillRect(SDL_Surface *screen, int x0, int y0, int x1, int y1, const Uint32 col); |
| 322 void dmDrawHLine(SDL_Surface *screen, int x0, int x1, int yc, const Uint32 col); | |
| 323 void dmDrawVLine(SDL_Surface *screen, int y0, int y1, int xc, const Uint32 col); | |
|
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324 |
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325 void dmDrawBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 ucol, Uint32 dcol); |
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326 void dmFillBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 bgcol, Uint32 ucol, Uint32 dcol); |
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327 |
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328 #endif // DM_GFX_MISC |
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329 |
|
90
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330 |
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331 static inline void dmClearSurface(SDL_Surface *screen, const Uint32 col) |
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332 { |
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333 SDL_FillRect(screen, NULL, col); |
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334 } |
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335 |
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336 |
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337 static inline Uint32 dmMapRGB(SDL_Surface *screen, int r, int g, int b) |
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338 { |
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339 return SDL_MapRGB(screen->format, r, g, b); |
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340 } |
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341 |
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342 |
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343 static inline Uint32 dmMapRGBA(SDL_Surface *screen, int r, int g, int b, int a) |
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344 { |
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345 return SDL_MapRGBA(screen->format, r, g, b, a); |
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346 } |
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347 |
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348 |
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349 static inline int dmDirectBlitSurface(SDL_Surface *bmp, SDL_Surface *screen) |
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350 { |
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351 return SDL_BlitSurface(bmp, NULL, screen, NULL); |
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352 } |
| 0 | 353 |
| 354 | |
|
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355 static inline SDL_Surface *dmCopySurface(SDL_Surface *src) |
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356 { |
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357 if (src != NULL) |
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358 return SDL_ConvertSurface(src, src->format, src->flags); |
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359 else |
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360 return NULL; |
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361 } |
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362 |
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363 |
| 0 | 364 /* Global variables |
| 365 */ | |
| 366 extern char *dmProgName, | |
| 367 *dmProgDesc, | |
| 368 *dmProgVersion, | |
| 369 *dmProgAuthor, | |
| 370 *dmProgLicense; | |
| 371 | |
| 372 extern int dmVerbosity; | |
| 373 void dmInitProg(char *name, char *desc, char *version, char *author, char *license); | |
| 374 void dmPrintBanner(FILE *outFile, const char *name, const char *usage); | |
| 375 | |
| 376 void dmMsgVA(int level, const char *fmt, va_list ap); | |
| 377 void dmMsg(int level, const char *fmt, ...); | |
| 378 void dmPrintVA(int level, const char *fmt, va_list ap); | |
| 379 void dmPrint(int level, const char *fmt, ...); | |
| 380 void dmErrorVA(const char *fmt, va_list); | |
| 381 void dmError(const char *fmt, ...); | |
| 382 | |
| 383 void * dmMalloc(size_t); | |
| 384 void * dmMalloc0(size_t); | |
| 385 void * dmRealloc(void *, size_t); | |
| 386 void * dmCalloc(size_t, size_t); | |
| 387 void dmFree(void *); | |
| 388 | |
|
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389 BOOL dmGetIntVal(const char *s, unsigned int *i); |
| 0 | 390 |
| 391 int dmGetErrno(); | |
| 392 const char *dmErrorStr(int error); | |
| 393 | |
| 394 char * dm_strdup(const char *); | |
|
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395 char * dm_strndup(const char *, const size_t n); |
| 0 | 396 char * dm_strdup_vprintf(const char *, va_list); |
| 397 char * dm_strdup_printf(const char *, ...); | |
| 398 | |
| 813 | 399 char * dm_basefilename(const char *filename); |
| 400 char * dm_strdup_fext(const char *filename, const char *fmt); | |
| 816 | 401 char * dm_strrcasecmp(char *str, const char *needle); |
| 0 | 402 |
|
294
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403 /* Mutexes |
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404 */ |
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405 #ifdef DM_MUTEX_DEBUG |
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406 |
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407 typedef struct |
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408 { |
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409 BOOL used; |
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410 Uint32 id; |
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411 int state; |
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412 } DMMutexLock; |
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413 |
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414 typedef struct |
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415 { |
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416 char *cr_file; |
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417 int cr_line; |
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418 SDL_mutex *m; |
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419 DMMutexLock locks[8]; |
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420 } DMMutex; |
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421 |
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422 #define dmMutexLock(x) dmDOMutexLock(x, __FILE__, (int) __LINE__) |
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423 #define dmMutexUnlock(x) dmDOMutexUnlock(x, __FILE__, (int) __LINE__) |
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424 #define dmCreateMutex(x) dmDOCreateMutex(__FILE__, (int) __LINE__) |
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425 |
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426 int dmDOMutexLock(DMMutex *mutex, const char *file, const int line); |
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427 int dmDOMutexUnlock(DMMutex *mutex, const char *file, const int line); |
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428 DMMutex * dmDOCreateMutex(const char *file, const int line); |
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429 void dmDestroyMutex(DMMutex *mutex); |
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430 |
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431 #else |
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432 #define DMMutex SDL_mutex |
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433 #define dmCreateMutex() SDL_CreateMutex() |
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434 #define dmDestroyMutex(x) SDL_DestroyMutex(x) |
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435 #define dmMutexLock(x) SDL_mutexP(x) |
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436 #define dmMutexUnlock(x) SDL_mutexV(x) |
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437 #endif |
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438 |
| 0 | 439 /* Endianess swapping macros |
| 440 */ | |
| 441 #define DM_SWAP_16_LE_BE(value) ((Uint16) ( \ | |
| 442 (Uint16) ((Uint16) (value) >> 8) | \ | |
| 443 (Uint16) ((Uint16) (value) << 8)) ) | |
| 444 | |
| 445 | |
| 446 #define DM_SWAP_32_LE_BE(value) ((Uint32) ( \ | |
| 447 (((Uint32) (value) & (Uint32) 0x000000ffU) << 24) | \ | |
| 448 (((Uint32) (value) & (Uint32) 0x0000ff00U) << 8) | \ | |
| 449 (((Uint32) (value) & (Uint32) 0x00ff0000U) >> 8) | \ | |
| 450 (((Uint32) (value) & (Uint32) 0xff000000U) >> 24))) | |
| 451 | |
| 452 #define DM_SWAP_64_LE_BE(value) ((Uint64) ( \ | |
| 453 (((Uint64) (value) & (Uint64) 0x00000000000000ffULL) << 56) | \ | |
| 454 (((Uint64) (value) & (Uint64) 0x000000000000ff00ULL) << 40) | \ | |
| 455 (((Uint64) (value) & (Uint64) 0x0000000000ff0000ULL) << 24) | \ | |
| 456 (((Uint64) (value) & (Uint64) 0x00000000ff000000ULL) << 8) | \ | |
| 457 (((Uint64) (value) & (Uint64) 0x000000ff00000000ULL) >> 8) | \ | |
| 458 (((Uint64) (value) & (Uint64) 0x0000ff0000000000ULL) >> 24) | \ | |
| 459 (((Uint64) (value) & (Uint64) 0x00ff000000000000ULL) >> 40) | \ | |
| 460 (((Uint64) (value) & (Uint64) 0xff00000000000000ULL) >> 56))) | |
| 873 | 461 |
| 0 | 462 |
| 463 /* Macros that swap only when needed ... | |
| 464 */ | |
| 465 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
| 770 | 466 # define DM_LE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) |
| 467 # define DM_LE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
| 468 # define DM_NATIVE_TO_LE16(value) DM_SWAP_16_LE_BE(value) | |
| 469 # define DM_NATIVE_TO_LE32(value) DM_SWAP_32_LE_BE(value) | |
| 0 | 470 |
| 770 | 471 # define DM_BE16_TO_NATIVE(value) ((Uint16) (value)) |
| 472 # define DM_BE32_TO_NATIVE(value) ((Uint32) (value)) | |
| 473 # define DM_NATIVE_TO_BE16(value) ((Uint16) (value)) | |
| 474 # define DM_NATIVE_TO_BE32(value) ((Uint32) (value)) | |
| 0 | 475 |
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476 # define DM_LE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) |
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477 # define DM_NATIVE_TO_LE64(value) DM_SWAP_64_LE_BE(value) |
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478 # define DM_BE64_TO_NATIVE(value) ((Uint64) (value)) |
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479 # define DM_NATIVE_TO_BE64(value) ((Uint64) (value)) |
| 0 | 480 |
| 481 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
| 482 | |
| 770 | 483 # define DM_LE16_TO_NATIVE(value) ((Uint16) (value)) |
| 484 # define DM_LE32_TO_NATIVE(value) ((Uint32) (value)) | |
| 485 # define DM_NATIVE_TO_LE16(value) ((Uint16) (value)) | |
| 486 # define DM_NATIVE_TO_LE32(value) ((Uint32) (value)) | |
| 0 | 487 |
| 770 | 488 # define DM_BE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) |
| 489 # define DM_BE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
| 490 # define DM_NATIVE_TO_BE16(value) DM_SWAP_16_LE_BE(value) | |
| 491 # define DM_NATIVE_TO_BE32(value) DM_SWAP_32_LE_BE(value) | |
| 0 | 492 |
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493 # define DM_LE64_TO_NATIVE(value) ((Uint64) (value)) |
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494 # define DM_NATIVE_TO_LE64(value) ((Uint64) (value)) |
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495 # define DM_BE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) |
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496 # define DM_NATIVE_TO_BE64(value) DM_SWAP_64_LE_BE(value) |
| 0 | 497 #endif |
| 498 | |
| 499 | |
| 500 #ifdef __cplusplus | |
| 501 } | |
| 502 #endif | |
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503 |
| 0 | 504 #endif // DMLIB_H |