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comparison decoders/shn.c @ 212:8c2cb920a383

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Changed the magic number macro to be more uniform with other decoders.
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 13 Jan 2002 19:46:04 +0000
parents 47cc2de2ae36
children c9772a9f5271
comparison
equal deleted inserted replaced
211:b35c04e4691e 212:8c2cb920a383
213 #define SHN_BITSHIFTSIZE 2 213 #define SHN_BITSHIFTSIZE 2
214 214
215 #define SHN_LPCQOFFSET_VER2 (1 << SHN_LPCQUANT) 215 #define SHN_LPCQOFFSET_VER2 (1 << SHN_LPCQUANT)
216 216
217 217
218 #define MAGIC_NUM 0x676B6A61 /* looks like "ajkg" as chars. */ 218 #define SHN_MAGIC 0x676B6A61 /* looks like "ajkg" as chars. */
219 219
220 #ifndef M_LN2 220 #ifndef M_LN2
221 #define M_LN2 0.69314718055994530942 221 #define M_LN2 0.69314718055994530942
222 #endif 222 #endif
223 223
355 355
356 while (1) 356 while (1)
357 { 357 {
358 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1); 358 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1);
359 word = ((word << 8) & 0xFFFFFF00) | ch; 359 word = ((word << 8) & 0xFFFFFF00) | ch;
360 if (SDL_SwapBE32(word) == MAGIC_NUM) 360 if (SDL_SwapBE32(word) == SHN_MAGIC)
361 { 361 {
362 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1); 362 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1);
363 return((int) ch); 363 return((int) ch);
364 } /* if */ 364 } /* if */
365 } /* while */ 365 } /* while */
385 385
386 if (__Sound_strcasecmp(ext, "shn") == 0) 386 if (__Sound_strcasecmp(ext, "shn") == 0)
387 return(extended_shn_magic_search(sample)); 387 return(extended_shn_magic_search(sample));
388 388
389 BAIL_IF_MACRO(SDL_RWread(rw, &magic, sizeof (magic), 1) != 1, NULL, -1); 389 BAIL_IF_MACRO(SDL_RWread(rw, &magic, sizeof (magic), 1) != 1, NULL, -1);
390 BAIL_IF_MACRO(SDL_SwapLE32(magic) != MAGIC_NUM, "SHN: Not a SHN file", -1); 390 BAIL_IF_MACRO(SDL_SwapLE32(magic) != SHN_MAGIC, "SHN: Not a SHN file", -1);
391 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1); 391 BAIL_IF_MACRO(SDL_RWread(rw, &ch, sizeof (ch), 1) != 1, NULL, -1);
392 BAIL_IF_MACRO(ch > 3, "SHN: Unsupported file version", -1); 392 BAIL_IF_MACRO(ch > 3, "SHN: Unsupported file version", -1);
393 393
394 return((int) ch); 394 return((int) ch);
395 } /* determine_shn_version */ 395 } /* determine_shn_version */