Mercurial > hg > dmlib
annotate dmlib.h @ 611:828d86cd10e0
Add new dmCopySurface() helper/wrapper function.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Fri, 12 Apr 2013 12:33:07 +0300 |
| parents | e74ad60b1e85 |
| children | 696f03f30c0e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * DMLib | |
| 3 * -- Main header file | |
| 4 * Programmed and designed by Matti 'ccr' Hamalainen | |
| 569 | 5 * (C) Copyright 2011-2013 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_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 | |
| 569 | 28 #define DM_PROG_AUTHOR "By Matti 'ccr' Hamalainen (C) Copyright 2013 TNSP" |
| 341 | 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, | |
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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 | |
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56 DMERR_INTERNAL, |
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57 |
| 0 | 58 // PACK-file subsystem |
| 59 DMERR_NOTPACK, | |
| 60 DMERR_VERSION, | |
| 61 DMERR_INVALID, | |
| 62 DMERR_COMPRESSION, | |
| 63 }; | |
| 64 | |
| 65 | |
| 66 // Resource management defines | |
| 67 #define DMRES_NAME_LEN 32 | |
| 68 #define DMRES_DATA_PACK "data.pak" // Name of the data-file | |
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69 #define DMRES_DATA_PATH "data/" // Sub-directory path |
| 0 | 70 #define DMRES_RES_FILE "res.txt" // Resource data file |
| 71 | |
| 72 | |
| 73 /* Define a boolean type | |
| 74 */ | |
| 75 #if !defined(FALSE) && !defined(TRUE) && !defined(BOOL) | |
| 76 typedef enum { FALSE = 0, TRUE = 1 } BOOL; | |
| 77 #endif | |
| 78 | |
| 79 #ifndef BOOL | |
| 80 #ifdef bool | |
| 81 #define BOOL bool | |
| 82 #else | |
| 83 #define BOOL int | |
| 84 #endif | |
| 85 #endif | |
| 86 | |
| 87 | |
|
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88 /* Math constants |
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89 */ |
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90 #define DM_PI 3.14159265358f |
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91 #define DM_PI2 6.28318530718f |
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92 #define DM_E 2.71828182846f |
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93 |
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94 |
| 0 | 95 /* Fixed point math type |
| 96 */ | |
| 97 typedef union | |
| 98 { | |
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99 Sint64 dw; |
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100 Sint32 w[2]; |
| 0 | 101 } DMFixedPoint; |
| 102 | |
| 103 | |
| 104 typedef union | |
| 105 { | |
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106 Sint32 dw; |
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107 Sint16 w[2]; |
| 0 | 108 } DMFixedPoint32; |
| 109 | |
| 110 | |
| 111 /* Macros for fixed point math | |
| 112 */ | |
| 113 #if __GNUC__ >= 3 | |
| 114 # define FP_SET(a, k) a.dw = k ## ULL | |
| 115 #else | |
| 116 # define FP_SET(a, k) a.dw = k | |
| 117 #endif | |
| 118 | |
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119 #define FP_CONV(a, k) a.dw = (k) |
| 0 | 120 |
| 121 #ifndef SDL_BYTEORDER | |
| 122 # error Undefined byteorder! | |
| 123 #endif | |
| 124 | |
| 125 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
| 126 # define FP_SETH(a, k) a.w[0] = (k) | |
| 127 # define FP_SETL(a, k) a.w[1] = (k) | |
| 128 # define FP_SETHL(a, h, l) { a.w[0] = (h); a.w[1] = (l); } | |
| 129 # define FP_GETH(a) a.w[0] | |
| 130 # define FP_GETL(a) a.w[1] | |
| 131 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
| 132 # define FP_SETH(a, k) a.w[1] = (k) | |
| 133 # define FP_SETL(a, k) a.w[0] = (k) | |
| 134 # define FP_SETHL(a, h, l) { a.w[1] = (h); a.w[0] = (l); } | |
| 135 # define FP_GETH(a) a.w[1] | |
| 136 # define FP_GETL(a) a.w[0] | |
| 137 #else | |
| 138 # error Unsupported byte order! | |
| 139 #endif | |
| 140 | |
| 141 #define FP_PRINTF(a) printf("%.8x:%.8x", FP_GETH(a), FP_GETL(a)) | |
| 142 #define FP_PRINTF32(a) printf("%.4x:%.4x", FP_GETH(a), FP_GETL(a)) | |
| 143 | |
| 144 #define FP_ADD(a, b) a.dw += b.dw | |
| 145 #define FP_SUB(a, b) a.dw -= b.dw | |
| 146 #define FP_ADD_R(r, a, b) r.dw = a.dw + b.dw | |
| 147 #define FP_SUB_R(r, a, b) r.dw = a.dw - b.dw | |
| 148 #define FP_DIV(a, b) a.dw /= b.dw | |
| 149 #define FP_MUL(a, b) a.dw *= b.dw | |
| 150 #define FP_DIV_R(r, a, b) r.dw = (a.dw / b.dw) | |
| 151 #define FP_MUL_R(r, a, b) r.dw = (a.dw * b.dw) | |
| 152 | |
| 153 | |
| 154 /* Miscellaneous types | |
| 155 */ | |
| 156 typedef struct | |
| 157 { | |
| 158 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
| 159 Uint8 a,g,b,r; | |
| 160 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
| 161 Uint8 r,g,b,a; | |
| 162 #endif | |
| 163 } DMRGBA32; | |
| 164 | |
| 165 | |
| 166 typedef float DMFloat; | |
| 167 | |
| 168 | |
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169 // Macro for swapping two lvalues of same type |
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170 #define DM_SWAP(T, A, B) { if ((B) < (A)) { T swtmp = (B); B = (A); A = swtmp; } } |
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171 |
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172 |
| 0 | 173 /* Drawing modes used by blitting and some other functions. |
| 174 */ | |
| 175 enum | |
| 176 { | |
| 177 DMD_NONE = 0x0000, | |
| 178 DMD_TRANSPARENT = 0x0001, | |
| 179 DMD_SATURATE = 0x0002, | |
| 180 | |
| 181 DMD_ANTIALIAS = 0x0004, | |
| 182 | |
| 183 DMD_NMODES = 6 | |
| 184 }; | |
| 185 | |
| 186 | |
| 187 // Available bitdepths. Not all functions may support every one of these. | |
| 188 enum | |
| 189 { | |
| 190 DMD_8BIT = 0, | |
| 191 DMD_32BIT, | |
| 192 | |
| 193 DMD_NBITDEPTHS | |
| 194 }; | |
| 195 | |
| 196 | |
| 197 static inline int dmBitsPerPixel2Index(int bpp) | |
| 198 { | |
| 199 return (bpp == 8 ? 0 : (bpp == 32 ? 1 : -1)); | |
| 200 } | |
| 201 | |
| 202 | |
| 203 /* Generic parameter interpolation | |
| 204 */ | |
| 205 #define DMM_S_CURVE(t) ((t) * (t) * (3.0f - 2.0f * (t))) | |
| 206 #define DMM_LERP(t, a, b) ((a) + (t) * ((b) - (a))) | |
| 207 | |
| 208 typedef struct | |
| 209 { | |
| 210 DMFloat start, end, nsteps; | |
| 211 } DMLerpContext; | |
| 212 | |
| 213 | |
| 214 void dmLerpInit(DMLerpContext *ctx, DMFloat start, DMFloat end, DMFloat nsteps); | |
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215 DMFloat dmCatmullRom(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3); |
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216 |
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217 |
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218 static inline DMFloat dmClamp10(const DMFloat a) |
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219 { |
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220 return (a < 0.0f ? 0.0f : (a > 1.0f ? 1.0f : a)); |
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221 } |
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222 |
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223 |
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224 static inline int dmClamp(const int v, const int min, const int max) |
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225 { |
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226 return (v < min ? min : (v > max ? max : v)); |
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227 } |
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228 |
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229 |
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230 static inline DMFloat dmLerpSCurve(DMLerpContext *ctx, const DMFloat step) |
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231 { |
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232 const DMFloat n = step / ctx->nsteps; |
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233 const DMFloat v = DMM_S_CURVE(n); |
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234 return DMM_LERP(v, ctx->start, ctx->end); |
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235 } |
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236 |
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237 |
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238 static inline DMFloat dmLerpSCurveClamp(DMLerpContext *ctx, const DMFloat step) |
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239 { |
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240 const DMFloat n = dmClamp10(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 dmLerp1(DMLerpContext *ctx, const DMFloat step) |
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247 { |
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248 const DMFloat v = step / ctx->nsteps; |
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249 return DMM_LERP(v, ctx->start, ctx->end); |
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250 } |
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251 |
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252 |
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253 static inline DMFloat dmLerp1Clamp(DMLerpContext *ctx, const DMFloat step) |
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254 { |
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255 const DMFloat v = dmClamp10(step / ctx->nsteps); |
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256 return DMM_LERP(v, ctx->start, ctx->end); |
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257 } |
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258 |
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259 |
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260 static inline DMFloat dmCatmullRomClamp(const DMFloat t, const DMFloat p0, const DMFloat p1, const DMFloat p2, const DMFloat p3) |
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261 { |
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262 return dmCatmullRom(dmClamp10(t), p0, p1, p2, p3); |
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263 } |
| 0 | 264 |
| 265 | |
| 266 /* Perlin noise | |
| 267 */ | |
| 268 void dmPerlinInit(void); | |
| 269 DMFloat dmPerlinNoise2D(DMFloat x, DMFloat y, DMFloat alpha, DMFloat beta, int n); | |
| 270 | |
| 271 | |
| 272 /* Arbitrary line drawing | |
| 273 */ | |
| 274 #ifdef DM_GFX_LINES | |
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275 #define DM_HEADER |
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276 #include "dmlinefunc.h" |
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277 |
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262
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278 enum |
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279 { |
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280 CLIP_TOP = 1, |
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281 CLIP_BOTTOM = 2, |
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282 CLIP_RIGHT = 4, |
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283 CLIP_LEFT = 8 |
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284 }; |
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285 |
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286 #define DM_CLIP_FUNC dmClipLineCoordsFloat |
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287 #define DM_COORD_TYPE DMFloat |
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288 #include "dmlineclip.h" |
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289 |
|
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290 #undef DM_HEADER |
| 0 | 291 #endif |
| 292 | |
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293 |
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294 /* Various blitting functions |
| 0 | 295 */ |
| 296 #ifdef DM_GFX_BLITS | |
| 297 typedef int (*DMScaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, const int dwidth, const int dheight, SDL_Surface *dst); | |
| 298 DMScaledBlitFunc dmGetScaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); | |
| 299 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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300 |
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301 typedef int (*DMUnscaledBlitFunc)(SDL_Surface *src, const int x0, const int y0, SDL_Surface *dst); |
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302 DMUnscaledBlitFunc dmGetUnscaledBlitFunc(SDL_PixelFormat *src, SDL_PixelFormat *dst, int mode); |
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303 int dmUnscaledBlitSurfaceAny(SDL_Surface *src, const int x0, const int y0, SDL_Surface *dst, int mode); |
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304 |
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305 SDL_Surface *dmConvertScaledSurface(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags, const int dwidth, const int dheight); |
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306 |
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307 |
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308 #define DM_HEADER |
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309 #include "dmblitfunc.h" |
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310 #undef DM_HEADER |
| 0 | 311 #endif |
| 312 | |
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313 |
| 0 | 314 /* Misc functions |
| 315 */ | |
| 316 #ifdef DM_GFX_MISC | |
| 317 void dmFillRect(SDL_Surface *screen, int x0, int y0, int x1, int y1, const Uint32 col); | |
| 318 void dmDrawHLine(SDL_Surface *screen, int x0, int x1, int yc, const Uint32 col); | |
| 319 void dmDrawVLine(SDL_Surface *screen, int y0, int y1, int xc, const Uint32 col); | |
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320 |
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321 void dmDrawBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 ucol, Uint32 dcol); |
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322 void dmFillBox3D(SDL_Surface *screen, int x0, int y0, int x1, int y1, Uint32 bgcol, Uint32 ucol, Uint32 dcol); |
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323 |
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324 |
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325 static inline void dmClearSurface(SDL_Surface *screen, const Uint32 col) |
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326 { |
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327 SDL_FillRect(screen, NULL, col); |
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328 } |
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329 |
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330 |
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331 static inline Uint32 dmMapRGB(SDL_Surface *screen, int r, int g, int b) |
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332 { |
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333 return SDL_MapRGB(screen->format, r, g, b); |
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334 } |
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335 |
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336 |
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337 static inline Uint32 dmMapRGBA(SDL_Surface *screen, int r, int g, int b, int a) |
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338 { |
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339 return SDL_MapRGBA(screen->format, r, g, b, a); |
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340 } |
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341 |
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342 |
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343 static inline int dmDirectBlitSurface(SDL_Surface *bmp, SDL_Surface *screen) |
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344 { |
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345 return SDL_BlitSurface(bmp, NULL, screen, NULL); |
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346 } |
| 0 | 347 #endif |
| 348 | |
| 349 | |
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350 static inline SDL_Surface *dmCopySurface(SDL_Surface *src) |
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351 { |
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352 if (src != NULL) |
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353 return SDL_ConvertSurface(src, src->format, src->flags); |
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354 else |
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355 return NULL; |
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356 } |
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357 |
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358 |
| 0 | 359 /* Global variables |
| 360 */ | |
| 361 extern char *dmProgName, | |
| 362 *dmProgDesc, | |
| 363 *dmProgVersion, | |
| 364 *dmProgAuthor, | |
| 365 *dmProgLicense; | |
| 366 | |
| 367 extern int dmVerbosity; | |
| 368 void dmInitProg(char *name, char *desc, char *version, char *author, char *license); | |
| 369 void dmPrintBanner(FILE *outFile, const char *name, const char *usage); | |
| 370 | |
| 371 void dmMsgVA(int level, const char *fmt, va_list ap); | |
| 372 void dmMsg(int level, const char *fmt, ...); | |
| 373 void dmPrintVA(int level, const char *fmt, va_list ap); | |
| 374 void dmPrint(int level, const char *fmt, ...); | |
| 375 void dmErrorVA(const char *fmt, va_list); | |
| 376 void dmError(const char *fmt, ...); | |
| 377 | |
| 378 void * dmMalloc(size_t); | |
| 379 void * dmMalloc0(size_t); | |
| 380 void * dmRealloc(void *, size_t); | |
| 381 void * dmCalloc(size_t, size_t); | |
| 382 void dmFree(void *); | |
| 383 | |
| 384 BOOL dmGetIntVal(const char *s, int *i); | |
| 385 | |
| 386 int dmGetErrno(); | |
| 387 const char *dmErrorStr(int error); | |
| 388 | |
| 389 char * dm_strdup(const char *); | |
| 390 char * dm_strdup_vprintf(const char *, va_list); | |
| 391 char * dm_strdup_printf(const char *, ...); | |
| 392 | |
| 393 | |
|
294
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394 /* Mutexes |
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395 */ |
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396 #ifdef DM_MUTEX_DEBUG |
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397 |
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398 typedef struct |
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399 { |
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400 BOOL used; |
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401 Uint32 id; |
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402 int state; |
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403 } DMMutexLock; |
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404 |
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405 typedef struct |
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406 { |
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407 char *cr_file; |
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408 int cr_line; |
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409 SDL_mutex *m; |
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410 DMMutexLock locks[8]; |
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411 } DMMutex; |
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412 |
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413 #define dmMutexLock(x) dmDOMutexLock(x, __FILE__, (int) __LINE__) |
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414 #define dmMutexUnlock(x) dmDOMutexUnlock(x, __FILE__, (int) __LINE__) |
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415 #define dmCreateMutex(x) dmDOCreateMutex(__FILE__, (int) __LINE__) |
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416 |
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417 int dmDOMutexLock(DMMutex *mutex, const char *file, const int line); |
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418 int dmDOMutexUnlock(DMMutex *mutex, const char *file, const int line); |
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419 DMMutex * dmDOCreateMutex(const char *file, const int line); |
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420 void dmDestroyMutex(DMMutex *mutex); |
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421 |
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422 #else |
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423 #define DMMutex SDL_mutex |
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424 #define dmCreateMutex() SDL_CreateMutex() |
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425 #define dmDestroyMutex(x) SDL_DestroyMutex(x) |
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426 #define dmMutexLock(x) SDL_mutexP(x) |
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427 #define dmMutexUnlock(x) SDL_mutexV(x) |
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428 #endif |
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429 |
| 0 | 430 /* Endianess swapping macros |
| 431 */ | |
| 432 #define DM_SWAP_16_LE_BE(value) ((Uint16) ( \ | |
| 433 (Uint16) ((Uint16) (value) >> 8) | \ | |
| 434 (Uint16) ((Uint16) (value) << 8)) ) | |
| 435 | |
| 436 | |
| 437 #define DM_SWAP_32_LE_BE(value) ((Uint32) ( \ | |
| 438 (((Uint32) (value) & (Uint32) 0x000000ffU) << 24) | \ | |
| 439 (((Uint32) (value) & (Uint32) 0x0000ff00U) << 8) | \ | |
| 440 (((Uint32) (value) & (Uint32) 0x00ff0000U) >> 8) | \ | |
| 441 (((Uint32) (value) & (Uint32) 0xff000000U) >> 24))) | |
| 442 | |
| 443 #ifdef DM_HAVE_64BIT | |
| 444 #define DM_SWAP_64_LE_BE(value) ((Uint64) ( \ | |
| 445 (((Uint64) (value) & (Uint64) 0x00000000000000ffULL) << 56) | \ | |
| 446 (((Uint64) (value) & (Uint64) 0x000000000000ff00ULL) << 40) | \ | |
| 447 (((Uint64) (value) & (Uint64) 0x0000000000ff0000ULL) << 24) | \ | |
| 448 (((Uint64) (value) & (Uint64) 0x00000000ff000000ULL) << 8) | \ | |
| 449 (((Uint64) (value) & (Uint64) 0x000000ff00000000ULL) >> 8) | \ | |
| 450 (((Uint64) (value) & (Uint64) 0x0000ff0000000000ULL) >> 24) | \ | |
| 451 (((Uint64) (value) & (Uint64) 0x00ff000000000000ULL) >> 40) | \ | |
| 452 (((Uint64) (value) & (Uint64) 0xff00000000000000ULL) >> 56))) | |
| 453 #endif | |
| 454 | |
| 455 /* Macros that swap only when needed ... | |
| 456 */ | |
| 457 #if (SDL_BYTEORDER == SDL_BIG_ENDIAN) | |
| 458 # define DM_LE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) | |
| 459 # define DM_LE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
| 460 # define DM_NATIVE_TO_LE16(value) DM_SWAP_16_LE_BE(value) | |
| 461 # define DM_NATIVE_TO_LE32(value) DM_SWAP_32_LE_BE(value) | |
| 462 | |
| 463 # define DM_BE16_TO_NATIVE(value) ((Uint16) (value)) | |
| 464 # define DM_BE32_TO_NATIVE(value) ((Uint32) (value)) | |
| 465 # define DM_NATIVE_TO_BE16(value) ((Uint16) (value)) | |
| 466 # define DM_NATIVE_TO_BE32(value) ((Uint32) (value)) | |
| 467 | |
| 468 # ifdef DM_HAVE_64BIT | |
| 469 # define DM_LE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) | |
| 470 # define DM_NATIVE_TO_LE64(value) DM_SWAP_64_LE_BE(value) | |
| 471 # define DM_BE64_TO_NATIVE(value) ((Uint64) (value)) | |
| 472 # define DM_NATIVE_TO_BE64(value) ((Uint64) (value)) | |
| 473 # endif | |
| 474 | |
| 475 #elif (SDL_BYTEORDER == SDL_LIL_ENDIAN) | |
| 476 | |
| 477 # define DM_LE16_TO_NATIVE(value) ((Uint16) (value)) | |
| 478 # define DM_LE32_TO_NATIVE(value) ((Uint32) (value)) | |
| 479 # define DM_NATIVE_TO_LE16(value) ((Uint16) (value)) | |
| 480 # define DM_NATIVE_TO_LE32(value) ((Uint32) (value)) | |
| 481 | |
| 482 # define DM_BE16_TO_NATIVE(value) DM_SWAP_16_LE_BE(value) | |
| 483 # define DM_BE32_TO_NATIVE(value) DM_SWAP_32_LE_BE(value) | |
| 484 # define DM_NATIVE_TO_BE16(value) DM_SWAP_16_LE_BE(value) | |
| 485 # define DM_NATIVE_TO_BE32(value) DM_SWAP_32_LE_BE(value) | |
| 486 | |
| 487 # ifdef DM_HAVE_64BIT | |
| 488 # define DM_LE64_TO_NATIVE(value) ((Uint64) (value)) | |
| 489 # define DM_NATIVE_TO_LE64(value) ((Uint64) (value)) | |
| 490 # define DM_BE64_TO_NATIVE(value) DM_SWAP_64_LE_BE(value) | |
| 491 # define DM_NATIVE_TO_BE64(value) DM_SWAP_64_LE_BE(value) | |
| 492 # endif | |
| 493 #endif | |
| 494 | |
| 495 | |
| 496 #ifdef __cplusplus | |
| 497 } | |
| 498 #endif | |
|
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499 |
| 0 | 500 #endif // DMLIB_H |