| 1 |
/* IO handlers */ |
| 2 |
/* |
| 3 |
* -------------------------------- |
| 4 |
* int mus_create_descriptors (void): initialize (allocate) various global arrays |
| 5 |
* int mus_read(int fd, int beg, int end, int chans, int **bufs) |
| 6 |
* int mus_write(int tfd, int beg, int end, int chans, int **bufs) |
| 7 |
* long mus_seek(int tfd, long offset, int origin) |
| 8 |
* int mus_open_read(char *arg) |
| 9 |
* int mus_open_write(char *arg) |
| 10 |
* int mus_create(char *arg) |
| 11 |
* int mus_reopen_write(char *arg) |
| 12 |
* int mus_close(int fd) |
| 13 |
* int mus_probe_file(char *arg) |
| 14 |
* int mus_open_file_descriptors (int tfd, int df, int ds, int dl) |
| 15 |
* int mus_close_file_descriptors(int tfd) |
| 16 |
* see sndplay.c for a short example |
| 17 |
* -------------------------------- |
| 18 |
*/ |
| 19 |
|
| 20 |
#if defined(HAVE_CONFIG_H) |
| 21 |
#include "config.h" |
| 22 |
#endif |
| 23 |
|
| 24 |
#include <math.h> |
| 25 |
#include <stdio.h> |
| 26 |
#if (!defined(HAVE_CONFIG_H)) || (defined(HAVE_FCNTL_H)) |
| 27 |
#include <fcntl.h> |
| 28 |
#endif |
| 29 |
#include <signal.h> |
| 30 |
#if (!defined(HAVE_CONFIG_H)) || (defined(HAVE_LIMITS_H)) |
| 31 |
#include <limits.h> |
| 32 |
#endif |
| 33 |
#include <errno.h> |
| 34 |
#include <stdlib.h> |
| 35 |
|
| 36 |
#if (defined(NEXT) || (defined(HAVE_LIBC_H) && (!defined(HAVE_UNISTD_H)))) |
| 37 |
#include <libc.h> |
| 38 |
#else |
| 39 |
#if (!(defined(_MSC_VER))) && (!(defined(MPW_C))) |
| 40 |
#include <unistd.h> |
| 41 |
#endif |
| 42 |
#endif |
| 43 |
#if (!defined(HAVE_CONFIG_H)) || (defined(HAVE_STRING_H)) |
| 44 |
#include <string.h> |
| 45 |
#endif |
| 46 |
|
| 47 |
#if (defined(SIZEOF_INT) && (SIZEOF_INT != 4)) || (defined(INT_MAX) && (INT_MAX != 2147483647)) |
| 48 |
#error sndlib C code assumes 32-bit ints |
| 49 |
#endif |
| 50 |
|
| 51 |
#if (defined(SIZEOF_LONG) && (SIZEOF_LONG < 4)) || (defined(LONG_MAX) && (LONG_MAX < 2147483647)) |
| 52 |
#error sndlib C code assumes longs are at least 32 bits |
| 53 |
#endif |
| 54 |
|
| 55 |
#if (defined(SIZEOF_SHORT) && (SIZEOF_SHORT != 2)) || (defined(SHRT_MAX) && (SHRT_MAX != 32767)) |
| 56 |
#error sndlib C code assumes 16-bit shorts |
| 57 |
#endif |
| 58 |
|
| 59 |
#if (defined(SIZEOF_CHAR) && (SIZEOF_CHAR != 1)) || (defined(CHAR_BIT) && (CHAR_BIT != 8)) |
| 60 |
#error sndlib C code assumes 8-bit chars |
| 61 |
#endif |
| 62 |
|
| 63 |
#include "sndlib.h" |
| 64 |
|
| 65 |
/* data translations for big/little endian machines -- the m_* forms are macros where possible for speed */ |
| 66 |
|
| 67 |
void mus_set_big_endian_int(unsigned char *j, int x) |
| 68 |
{ |
| 69 |
unsigned char *ox; |
| 70 |
ox=(unsigned char *)&x; |
| 71 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 72 |
j[0]=ox[3]; j[1]=ox[2]; j[2]=ox[1]; j[3]=ox[0]; |
| 73 |
#else |
| 74 |
j[0]=ox[0]; j[1]=ox[1]; j[2]=ox[2]; j[3]=ox[3]; |
| 75 |
#endif |
| 76 |
} |
| 77 |
|
| 78 |
int mus_big_endian_int (unsigned char *inp) |
| 79 |
{ |
| 80 |
int o; |
| 81 |
unsigned char *outp; |
| 82 |
outp=(unsigned char *)&o; |
| 83 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 84 |
outp[0]=inp[3]; outp[1]=inp[2]; outp[2]=inp[1]; outp[3]=inp[0]; |
| 85 |
#else |
| 86 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 87 |
#endif |
| 88 |
return(o); |
| 89 |
} |
| 90 |
|
| 91 |
void mus_set_little_endian_int(unsigned char *j, int x) |
| 92 |
{ |
| 93 |
unsigned char *ox; |
| 94 |
ox=(unsigned char *)&x; |
| 95 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 96 |
j[0]=ox[3]; j[1]=ox[2]; j[2]=ox[1]; j[3]=ox[0]; |
| 97 |
#else |
| 98 |
j[0]=ox[0]; j[1]=ox[1]; j[2]=ox[2]; j[3]=ox[3]; |
| 99 |
#endif |
| 100 |
} |
| 101 |
|
| 102 |
int mus_little_endian_int (unsigned char *inp) |
| 103 |
{ |
| 104 |
int o; |
| 105 |
unsigned char *outp; |
| 106 |
outp=(unsigned char *)&o; |
| 107 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 108 |
outp[0]=inp[3]; outp[1]=inp[2]; outp[2]=inp[1]; outp[3]=inp[0]; |
| 109 |
#else |
| 110 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 111 |
#endif |
| 112 |
return(o); |
| 113 |
} |
| 114 |
|
| 115 |
int mus_uninterpreted_int (unsigned char *inp) |
| 116 |
{ |
| 117 |
int o; |
| 118 |
unsigned char *outp; |
| 119 |
outp=(unsigned char *)&o; |
| 120 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 121 |
return(o); |
| 122 |
} |
| 123 |
|
| 124 |
unsigned int mus_big_endian_unsigned_int (unsigned char *inp) |
| 125 |
{ |
| 126 |
unsigned int o; |
| 127 |
unsigned char *outp; |
| 128 |
outp=(unsigned char *)&o; |
| 129 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 130 |
outp[0]=inp[3]; outp[1]=inp[2]; outp[2]=inp[1]; outp[3]=inp[0]; |
| 131 |
#else |
| 132 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 133 |
#endif |
| 134 |
return(o); |
| 135 |
} |
| 136 |
|
| 137 |
unsigned int mus_little_endian_unsigned_int (unsigned char *inp) |
| 138 |
{ |
| 139 |
unsigned int o; |
| 140 |
unsigned char *outp; |
| 141 |
outp=(unsigned char *)&o; |
| 142 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 143 |
outp[0]=inp[3]; outp[1]=inp[2]; outp[2]=inp[1]; outp[3]=inp[0]; |
| 144 |
#else |
| 145 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 146 |
#endif |
| 147 |
return(o); |
| 148 |
} |
| 149 |
|
| 150 |
|
| 151 |
void mus_set_big_endian_float(unsigned char *j, float x) |
| 152 |
{ |
| 153 |
unsigned char *ox; |
| 154 |
ox=(unsigned char *)&x; |
| 155 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 156 |
j[0]=ox[3]; j[1]=ox[2]; j[2]=ox[1]; j[3]=ox[0]; |
| 157 |
#else |
| 158 |
j[0]=ox[0]; j[1]=ox[1]; j[2]=ox[2]; j[3]=ox[3]; |
| 159 |
#endif |
| 160 |
} |
| 161 |
|
| 162 |
float mus_big_endian_float (unsigned char *inp) |
| 163 |
{ |
| 164 |
float o; |
| 165 |
unsigned char *outp; |
| 166 |
outp=(unsigned char *)&o; |
| 167 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 168 |
outp[0]=inp[3]; outp[1]=inp[2]; outp[2]=inp[1]; outp[3]=inp[0]; |
| 169 |
#else |
| 170 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 171 |
#endif |
| 172 |
return(o); |
| 173 |
} |
| 174 |
|
| 175 |
void mus_set_little_endian_float(unsigned char *j, float x) |
| 176 |
{ |
| 177 |
unsigned char *ox; |
| 178 |
ox=(unsigned char *)&x; |
| 179 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 180 |
j[0]=ox[3]; j[1]=ox[2]; j[2]=ox[1]; j[3]=ox[0]; |
| 181 |
#else |
| 182 |
j[0]=ox[0]; j[1]=ox[1]; j[2]=ox[2]; j[3]=ox[3]; |
| 183 |
#endif |
| 184 |
} |
| 185 |
|
| 186 |
float mus_little_endian_float (unsigned char *inp) |
| 187 |
{ |
| 188 |
float o; |
| 189 |
unsigned char *outp; |
| 190 |
outp=(unsigned char *)&o; |
| 191 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 192 |
outp[0]=inp[3]; outp[1]=inp[2]; outp[2]=inp[1]; outp[3]=inp[0]; |
| 193 |
#else |
| 194 |
outp[0]=inp[0]; outp[1]=inp[1]; outp[2]=inp[2]; outp[3]=inp[3]; |
| 195 |
#endif |
| 196 |
return(o); |
| 197 |
} |
| 198 |
|
| 199 |
void mus_set_big_endian_short(unsigned char *j, short x) |
| 200 |
{ |
| 201 |
unsigned char *ox; |
| 202 |
ox=(unsigned char *)&x; |
| 203 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 204 |
j[0]=ox[1]; j[1]=ox[0]; |
| 205 |
#else |
| 206 |
j[0]=ox[0]; j[1]=ox[1]; |
| 207 |
#endif |
| 208 |
} |
| 209 |
|
| 210 |
short mus_big_endian_short (unsigned char *inp) |
| 211 |
{ |
| 212 |
short o; |
| 213 |
unsigned char *outp; |
| 214 |
outp=(unsigned char *)&o; |
| 215 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 216 |
outp[0]=inp[1]; outp[1]=inp[0]; |
| 217 |
#else |
| 218 |
outp[0]=inp[0]; outp[1]=inp[1]; |
| 219 |
#endif |
| 220 |
return(o); |
| 221 |
} |
| 222 |
|
| 223 |
void mus_set_little_endian_short(unsigned char *j, short x) |
| 224 |
{ |
| 225 |
unsigned char *ox; |
| 226 |
ox=(unsigned char *)&x; |
| 227 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 228 |
j[0]=ox[1]; j[1]=ox[0]; |
| 229 |
#else |
| 230 |
j[0]=ox[0]; j[1]=ox[1]; |
| 231 |
#endif |
| 232 |
} |
| 233 |
|
| 234 |
short mus_little_endian_short (unsigned char *inp) |
| 235 |
{ |
| 236 |
short o; |
| 237 |
unsigned char *outp; |
| 238 |
outp=(unsigned char *)&o; |
| 239 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 240 |
outp[0]=inp[1]; outp[1]=inp[0]; |
| 241 |
#else |
| 242 |
outp[0]=inp[0]; outp[1]=inp[1]; |
| 243 |
#endif |
| 244 |
return(o); |
| 245 |
} |
| 246 |
|
| 247 |
void mus_set_big_endian_unsigned_short(unsigned char *j, unsigned short x) |
| 248 |
{ |
| 249 |
unsigned char *ox; |
| 250 |
ox=(unsigned char *)&x; |
| 251 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 252 |
j[0]=ox[1]; j[1]=ox[0]; |
| 253 |
#else |
| 254 |
j[0]=ox[0]; j[1]=ox[1]; |
| 255 |
#endif |
| 256 |
} |
| 257 |
|
| 258 |
unsigned short mus_big_endian_unsigned_short (unsigned char *inp) |
| 259 |
{ |
| 260 |
unsigned short o; |
| 261 |
unsigned char *outp; |
| 262 |
outp=(unsigned char *)&o; |
| 263 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 264 |
outp[0]=inp[1]; outp[1]=inp[0]; |
| 265 |
#else |
| 266 |
outp[0]=inp[0]; outp[1]=inp[1]; |
| 267 |
#endif |
| 268 |
return(o); |
| 269 |
} |
| 270 |
|
| 271 |
void mus_set_little_endian_unsigned_short(unsigned char *j, unsigned short x) |
| 272 |
{ |
| 273 |
unsigned char *ox; |
| 274 |
ox=(unsigned char *)&x; |
| 275 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 276 |
j[0]=ox[1]; j[1]=ox[0]; |
| 277 |
#else |
| 278 |
j[0]=ox[0]; j[1]=ox[1]; |
| 279 |
#endif |
| 280 |
} |
| 281 |
|
| 282 |
unsigned short mus_little_endian_unsigned_short (unsigned char *inp) |
| 283 |
{ |
| 284 |
unsigned short o; |
| 285 |
unsigned char *outp; |
| 286 |
outp=(unsigned char *)&o; |
| 287 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 288 |
outp[0]=inp[1]; outp[1]=inp[0]; |
| 289 |
#else |
| 290 |
outp[0]=inp[0]; outp[1]=inp[1]; |
| 291 |
#endif |
| 292 |
return(o); |
| 293 |
} |
| 294 |
|
| 295 |
double mus_little_endian_double (unsigned char *inp) |
| 296 |
{ |
| 297 |
double o; |
| 298 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 299 |
int i; |
| 300 |
#endif |
| 301 |
unsigned char *outp; |
| 302 |
outp=(unsigned char *)&o; |
| 303 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 304 |
for (i=0;i<8;i++) outp[i]=inp[i]; |
| 305 |
#else |
| 306 |
outp[0]=inp[7]; outp[1]=inp[6]; outp[2]=inp[5]; outp[3]=inp[4]; outp[4]=inp[3]; outp[5]=inp[2]; outp[6]=inp[1]; outp[7]=inp[0]; |
| 307 |
#endif |
| 308 |
return(o); |
| 309 |
} |
| 310 |
|
| 311 |
double mus_big_endian_double (unsigned char *inp) |
| 312 |
{ |
| 313 |
double o; |
| 314 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 315 |
int i; |
| 316 |
#endif |
| 317 |
unsigned char *outp; |
| 318 |
outp=(unsigned char *)&o; |
| 319 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 320 |
outp[0]=inp[7]; outp[1]=inp[6]; outp[2]=inp[5]; outp[3]=inp[4]; outp[4]=inp[3]; outp[5]=inp[2]; outp[6]=inp[1]; outp[7]=inp[0]; |
| 321 |
#else |
| 322 |
for (i=0;i<8;i++) outp[i]=inp[i]; |
| 323 |
#endif |
| 324 |
return(o); |
| 325 |
} |
| 326 |
|
| 327 |
void mus_set_big_endian_double(unsigned char *j, double x) |
| 328 |
{ |
| 329 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 330 |
int i; |
| 331 |
#endif |
| 332 |
unsigned char *ox; |
| 333 |
ox=(unsigned char *)&x; |
| 334 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 335 |
j[0]=ox[7]; j[1]=ox[6]; j[2]=ox[5]; j[3]=ox[4]; j[4]=ox[3]; j[5]=ox[2]; j[6]=ox[1]; j[7]=ox[0]; |
| 336 |
#else |
| 337 |
for (i=0;i<8;i++) j[i]=ox[i]; |
| 338 |
#endif |
| 339 |
} |
| 340 |
|
| 341 |
void mus_set_little_endian_double(unsigned char *j, double x) |
| 342 |
{ |
| 343 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 344 |
int i; |
| 345 |
#endif |
| 346 |
unsigned char *ox; |
| 347 |
ox=(unsigned char *)&x; |
| 348 |
#ifndef SNDLIB_LITTLE_ENDIAN |
| 349 |
for (i=0;i<8;i++) j[i]=ox[i]; |
| 350 |
#else |
| 351 |
j[0]=ox[7]; j[1]=ox[6]; j[2]=ox[5]; j[3]=ox[4]; j[4]=ox[3]; j[5]=ox[2]; j[6]=ox[1]; j[7]=ox[0]; |
| 352 |
#endif |
| 353 |
} |
| 354 |
|
| 355 |
/* Vax float translation taken from Mosaic libdtm/vaxcvt.c */ |
| 356 |
static float from_vax_float(unsigned char *inp) |
| 357 |
{ |
| 358 |
unsigned char exp; |
| 359 |
unsigned char c0, c1, c2, c3; |
| 360 |
float o; |
| 361 |
unsigned char *outp; |
| 362 |
outp=(unsigned char *)&o; |
| 363 |
c0 = inp[0]; c1 = inp[1]; c2 = inp[2]; c3 = inp[3]; |
| 364 |
exp = (c1 << 1) | (c0 >> 7); /* extract exponent */ |
| 365 |
if (!exp && !c1) return(0.0); /* zero value */ |
| 366 |
else if (exp>2) { /* normal value */ |
| 367 |
outp[0] = c1 - 1; /* subtracts 2 from exponent */ |
| 368 |
outp[1] = c0; /* copy mantissa, LSB of exponent */ |
| 369 |
outp[2] = c3; |
| 370 |
outp[3] = c2;} |
| 371 |
else if (exp) { /* denormalized number */ |
| 372 |
unsigned int shft; |
| 373 |
outp[0] = c1 & 0x80; /* keep sign, zero exponent */ |
| 374 |
shft = 3 - exp; |
| 375 |
/* shift original mant by 1 or 2 to get denormalized mant */ |
| 376 |
/* prefix mantissa with '1'b or '01'b as appropriate */ |
| 377 |
outp[1] = ((c0 & 0x7f) >> shft) | (0x10 << exp); |
| 378 |
outp[2] = (c0 << (8-shft)) | (c3 >> shft); |
| 379 |
outp[3] = (c3 << (8-shft)) | (c2 >> shft);} |
| 380 |
else { /* sign=1 -> infinity or NaN */ |
| 381 |
outp[0] = 0xff; /* set exp to 255 */ |
| 382 |
outp[1] = c0 | 0x80; /* LSB of exp = 1 */ |
| 383 |
outp[2] = c3; |
| 384 |
outp[3] = c2;} |
| 385 |
return(o); |
| 386 |
} |
| 387 |
|
| 388 |
#if USE_BYTESWAP |
| 389 |
#include <byteswap.h> |
| 390 |
/* in fully optimized code, the byteswap macros are about 15% faster than the calls used here */ |
| 391 |
#endif |
| 392 |
|
| 393 |
#ifdef SNDLIB_LITTLE_ENDIAN |
| 394 |
|
| 395 |
#if USE_BYTESWAP |
| 396 |
#define m_big_endian_short(n) ((short)(bswap_16((*((unsigned short *)n))))) |
| 397 |
#define m_big_endian_int(n) ((int)(bswap_32((*((unsigned int *)n))))) |
| 398 |
#else |
| 399 |
#define m_big_endian_short(n) (mus_big_endian_short(n)) |
| 400 |
#define m_big_endian_int(n) (mus_big_endian_int(n)) |
| 401 |
#endif |
| 402 |
#define m_big_endian_float(n) (mus_big_endian_float(n)) |
| 403 |
#define m_big_endian_double(n) (mus_big_endian_double(n)) |
| 404 |
#define m_big_endian_unsigned_short(n) (mus_big_endian_unsigned_short(n)) |
| 405 |
|
| 406 |
#define m_little_endian_short(n) (*((short *)n)) |
| 407 |
#define m_little_endian_int(n) (*((int *)n)) |
| 408 |
#define m_little_endian_float(n) (*((float *)n)) |
| 409 |
#define m_little_endian_double(n) (*((double *)n)) |
| 410 |
#define m_little_endian_unsigned_short(n) (*((unsigned short *)n)) |
| 411 |
|
| 412 |
#define m_set_big_endian_short(n,x) mus_set_big_endian_short(n,x) |
| 413 |
#define m_set_big_endian_int(n,x) mus_set_big_endian_int(n,x) |
| 414 |
#define m_set_big_endian_float(n,x) mus_set_big_endian_float(n,x) |
| 415 |
#define m_set_big_endian_double(n,x) mus_set_big_endian_double(n,x) |
| 416 |
#define m_set_big_endian_unsigned_short(n,x) mus_set_big_endian_unsigned_short(n,x) |
| 417 |
|
| 418 |
#define m_set_little_endian_short(n,x) (*((short *)n)) = x |
| 419 |
#define m_set_little_endian_int(n,x) (*((int *)n)) = x |
| 420 |
#define m_set_little_endian_float(n,x) (*((float *)n)) = x |
| 421 |
#define m_set_little_endian_double(n,x) (*((double *)n)) = x |
| 422 |
#define m_set_little_endian_unsigned_short(n,x) (*((unsigned short *)n)) = x |
| 423 |
|
| 424 |
#else |
| 425 |
|
| 426 |
#ifndef SUN |
| 427 |
#define m_big_endian_short(n) (*((short *)n)) |
| 428 |
#define m_big_endian_int(n) (*((int *)n)) |
| 429 |
#define m_big_endian_float(n) (*((float *)n)) |
| 430 |
#define m_big_endian_double(n) (*((double *)n)) |
| 431 |
#define m_big_endian_unsigned_short(n) (*((unsigned short *)n)) |
| 432 |
|
| 433 |
#define m_set_big_endian_short(n,x) (*((short *)n)) = x |
| 434 |
#define m_set_big_endian_int(n,x) (*((int *)n)) = x |
| 435 |
#define m_set_big_endian_float(n,x) (*((float *)n)) = x |
| 436 |
#define m_set_big_endian_double(n,x) (*((double *)n)) = x |
| 437 |
#define m_set_big_endian_unsigned_short(n,x) (*((unsigned short *)n)) = x |
| 438 |
#else |
| 439 |
#define m_big_endian_short(n) (mus_big_endian_short(n)) |
| 440 |
#define m_big_endian_int(n) (mus_big_endian_int(n)) |
| 441 |
#define m_big_endian_float(n) (mus_big_endian_float(n)) |
| 442 |
#define m_big_endian_double(n) (mus_big_endian_double(n)) |
| 443 |
#define m_big_endian_unsigned_short(n) (mus_big_endian_unsigned_short(n)) |
| 444 |
|
| 445 |
#define m_set_big_endian_short(n,x) mus_set_big_endian_short(n,x) |
| 446 |
#define m_set_big_endian_int(n,x) mus_set_big_endian_int(n,x) |
| 447 |
#define m_set_big_endian_float(n,x) mus_set_big_endian_float(n,x) |
| 448 |
#define m_set_big_endian_double(n,x) mus_set_big_endian_double(n,x) |
| 449 |
#define m_set_big_endian_unsigned_short(n,x) mus_set_big_endian_unsigned_short(n,x) |
| 450 |
#endif |
| 451 |
|
| 452 |
#if USE_BYTESWAP |
| 453 |
#define m_little_endian_short(n) ((short)(bswap_16((*((unsigned short *)n))))) |
| 454 |
#define m_little_endian_int(n) ((int)(bswap_32((*((unsigned int *)n))))) |
| 455 |
#else |
| 456 |
#define m_little_endian_short(n) (mus_little_endian_short(n)) |
| 457 |
#define m_little_endian_int(n) (mus_little_endian_int(n)) |
| 458 |
#endif |
| 459 |
#define m_little_endian_float(n) (mus_little_endian_float(n)) |
| 460 |
#define m_little_endian_double(n) (mus_little_endian_double(n)) |
| 461 |
#define m_little_endian_unsigned_short(n) (mus_little_endian_unsigned_short(n)) |
| 462 |
|
| 463 |
#define m_set_little_endian_short(n,x) mus_set_little_endian_short(n,x) |
| 464 |
#define m_set_little_endian_int(n,x) mus_set_little_endian_int(n,x) |
| 465 |
#define m_set_little_endian_float(n,x) mus_set_little_endian_float(n,x) |
| 466 |
#define m_set_little_endian_double(n,x) mus_set_little_endian_double(n,x) |
| 467 |
#define m_set_little_endian_unsigned_short(n,x) mus_set_little_endian_unsigned_short(n,x) |
| 468 |
|
| 469 |
#endif |
| 470 |
|
| 471 |
|
| 472 |
/* ---------------- file descriptors ---------------- |
| 473 |
* |
| 474 |
* I'm using unbuffered IO here because it is faster on the machines I normally use, |
| 475 |
* and I'm normally doing very large reads/writes (that is, the stuff is self-buffered). |
| 476 |
* |
| 477 |
* machine read/write: fread/fwrite: arithmetic: |
| 478 |
* 256 512 8192 65536 same sizes tbl bigfft sffts |
| 479 |
* |
| 480 |
* NeXT 68040 (32MB): 11575 10514 10256 9943 11951 11923 12358 12259 10478 108122 26622 |
| 481 |
* NeXT Turbo (16MB): 8329 7760 6933 6833 9216 8742 9416 9238 7825 121591 19495 |
| 482 |
* HP 90MHz Pentium NextStep: 11970 10069 9840 9920 11930 11209 11399 11540 1930 46389 4019 |
| 483 |
* Mac 8500 120 MHz PPC MacOS: 21733 15416 5000 2916 9566 9550 9733 9850 <died in memory manager> |
| 484 |
* Mac G3 266 MHz PPC MacOS: 4866 3216 1850 1366 2400 2400 2366 2450 550 12233 700 |
| 485 |
* MkLinux G3 266 MHz: 580 462 390 419 640 631 552 500 485 11364 770 |
| 486 |
* LinuxPPC G3 266 MHz: 456 385 366 397 489 467 467 487 397 11808 763 |
| 487 |
* Mac clone 120 MHz PPC BeOS: 1567 885 725 3392 1015 1000 1114 1161 1092 37212 1167 |
| 488 |
* SGI R4600 132 MHz Indy (32MB): 2412 1619 959 1045 1172 1174 1111 1126 1224 30825 3490 |
| 489 |
* SGI R5000 150 MHz Indy (32MB): 1067 846 684 737 847 817 734 791 885 25878 1591 |
| 490 |
* SGI R5000 180 MHz O2 (64MB): 1359 788 431 446 1919 1944 1891 1885 828 24658 1390 |
| 491 |
* Sun Ultra5 270 MHz (128 MB): 981 880 796 827 965 1029 922 903 445 26791 691 |
| 492 |
* HP 200 MHz Pentium Linux: 576 492 456 482 615 613 599 592 695 14851 882 |
| 493 |
* Asus 266 MHz Pentium II Linux: 475 426 404 406 466 455 467 465 490 13170 595 |
| 494 |
* ditto W95: 1320 660 600 550 2470 2470 2470 2470 990 17410 1540 |
| 495 |
* Dell XPSD300 Pentium II Linux: 393 350 325 332 376 369 397 372 414 8793 576 |
| 496 |
* 450MHz PC Linux: 263 227 208 217 268 263 274 270 275 6224 506 |
| 497 |
* |
| 498 |
* the first 8 numbers are comparing read/write fread/fwrite at various buffer sizes -- CLM uses 65536. |
| 499 |
* the last 3 numbers are comparing table lookup, a huge fft, and a bunch of small ffts. |
| 500 |
* In normal CLM usage, small instruments and mixes are IO bound, so these differences can matter. |
| 501 |
* The reason to use 65536 rather than 8192 is that it allows us to forgo IO completely in |
| 502 |
* many cases -- the output buffer can collect many notes before flushing, etc. |
| 503 |
*/ |
| 504 |
|
| 505 |
#if defined(SGI) || defined(LINUX) || defined(UW2) || defined(SCO5) |
| 506 |
#define FILE_DESCRIPTORS 400 |
| 507 |
#define BASE_FILE_DESCRIPTORS 200 |
| 508 |
#else |
| 509 |
#define FILE_DESCRIPTORS 128 |
| 510 |
#define BASE_FILE_DESCRIPTORS 64 |
| 511 |
#endif |
| 512 |
|
| 513 |
/* this from the glibc FAQ: |
| 514 |
* You can always get the maximum number of file descriptors a process is |
| 515 |
* allowed to have open at any time using number = sysconf (_SC_OPEN_MAX) |
| 516 |
*/ |
| 517 |
|
| 518 |
static int io_descriptors_ok = 0; |
| 519 |
static int *io_data_format,*io_bytes_per_sample,*io_data_location,*io_files,*io_data_clipped,*io_chans,*io_header_type; |
| 520 |
static int io_files_ready = 0; |
| 521 |
static int max_descriptor = 0; |
| 522 |
|
| 523 |
static int rt_ap_out; /* address of RT audio ports, if any */ |
| 524 |
|
| 525 |
#ifdef CLM |
| 526 |
void set_rt_audio_p (int rt) |
| 527 |
{ |
| 528 |
rt_ap_out = rt; |
| 529 |
} |
| 530 |
#endif |
| 531 |
|
| 532 |
int mus_create_descriptors (void) |
| 533 |
{ |
| 534 |
if (!io_descriptors_ok) |
| 535 |
{ |
| 536 |
io_descriptors_ok = 1; |
| 537 |
max_descriptor = 0; |
| 538 |
io_data_format = (int *)CALLOC(FILE_DESCRIPTORS,sizeof(int)); |
| 539 |
io_bytes_per_sample = (int *)CALLOC(FILE_DESCRIPTORS,sizeof(int)); |
| 540 |
io_data_clipped = (int *)CALLOC(FILE_DESCRIPTORS,sizeof(int)); |
| 541 |
io_header_type = (int *)CALLOC(FILE_DESCRIPTORS,sizeof(int)); |
| 542 |
io_chans = (int *)CALLOC(FILE_DESCRIPTORS,sizeof(int)); |
| 543 |
io_data_location = (int *)CALLOC(FILE_DESCRIPTORS,sizeof(int)); |
| 544 |
io_files = (int *)CALLOC(BASE_FILE_DESCRIPTORS,sizeof(int)); |
| 545 |
if ((io_data_format == NULL) || (io_bytes_per_sample == NULL) || (io_data_location == NULL) || (io_files == NULL) || |
| 546 |
(io_data_clipped == NULL) || (io_header_type == NULL)) |
| 547 |
{ |
| 548 |
mus_error(MUS_MEMORY_ALLOCATION_FAILED,"file descriptor buffer allocation trouble"); |
| 549 |
return(-1); |
| 550 |
} |
| 551 |
} |
| 552 |
return(0); |
| 553 |
} |
| 554 |
|
| 555 |
static int convert_fd(int n) |
| 556 |
{ |
| 557 |
if (n<BASE_FILE_DESCRIPTORS) |
| 558 |
return(n); |
| 559 |
else |
| 560 |
{ |
| 561 |
int i; |
| 562 |
for (i=0;i<BASE_FILE_DESCRIPTORS;i++) |
| 563 |
{ |
| 564 |
if (io_files[i] == n) return(i+BASE_FILE_DESCRIPTORS); |
| 565 |
} |
| 566 |
return(-1); |
| 567 |
} |
| 568 |
} |
| 569 |
|
| 570 |
static int open_mus_file (int tfd) |
| 571 |
{ |
| 572 |
int fd; |
| 573 |
if (tfd < BASE_FILE_DESCRIPTORS) return(tfd); |
| 574 |
if (io_files_ready == 0) |
| 575 |
{ |
| 576 |
for (fd=0;fd<BASE_FILE_DESCRIPTORS;fd++) io_files[fd]=-1; |
| 577 |
io_files_ready = 1; |
| 578 |
} |
| 579 |
for (fd=0;fd<BASE_FILE_DESCRIPTORS;fd++) |
| 580 |
{ |
| 581 |
if (io_files[fd] == -1) |
| 582 |
{ |
| 583 |
io_files[fd] = tfd; |
| 584 |
return(fd+BASE_FILE_DESCRIPTORS); |
| 585 |
} |
| 586 |
} |
| 587 |
return(-1); |
| 588 |
} |
| 589 |
|
| 590 |
int mus_open_file_descriptors (int tfd, int format, int size, int location) |
| 591 |
{ /* transfers header info from functions in header.c back to us for reads here and in merge.c */ |
| 592 |
int fd; |
| 593 |
if (!io_descriptors_ok) return(-1); |
| 594 |
fd = open_mus_file(tfd); |
| 595 |
if (fd == -1) return(-1); |
| 596 |
io_data_format[fd] = format; |
| 597 |
io_bytes_per_sample[fd] = size; |
| 598 |
io_data_location[fd] = location; |
| 599 |
io_data_clipped[fd] = 0; |
| 600 |
io_header_type[fd] = 0; |
| 601 |
io_chans[fd] = 1; |
| 602 |
if (fd > max_descriptor) max_descriptor = fd; |
| 603 |
return(0); |
| 604 |
} |
| 605 |
|
| 606 |
int mus_set_file_descriptors (int tfd, int format, int size, int location, int chans, int type) |
| 607 |
{ |
| 608 |
/* new form to make sound.c handlers cleaner, 4-Sep-99 */ |
| 609 |
int fd; |
| 610 |
if (!io_descriptors_ok) return(-1); |
| 611 |
fd = open_mus_file(tfd); |
| 612 |
if (fd == -1) return(-1); |
| 613 |
io_data_format[fd] = format; |
| 614 |
io_bytes_per_sample[fd] = size; |
| 615 |
io_data_location[fd] = location; |
| 616 |
io_header_type[fd] = type; |
| 617 |
io_data_clipped[fd] = 0; |
| 618 |
io_chans[fd] = chans; |
| 619 |
if (fd > max_descriptor) max_descriptor = fd; |
| 620 |
return(0); |
| 621 |
} |
| 622 |
|
| 623 |
int mus_close_file_descriptors(int tfd) |
| 624 |
{ |
| 625 |
int fd; |
| 626 |
if (!io_descriptors_ok) return(0); /* not necessarily an error -- c-close before with-sound etc */ |
| 627 |
fd = convert_fd(tfd); |
| 628 |
if (fd >= 0) |
| 629 |
{ |
| 630 |
if (fd >= BASE_FILE_DESCRIPTORS) |
| 631 |
io_files[fd-BASE_FILE_DESCRIPTORS] = -1; |
| 632 |
io_data_format[fd]=SNDLIB_NO_SND; |
| 633 |
io_header_type[fd] = 0; |
| 634 |
io_data_clipped[fd] = 0; |
| 635 |
io_chans[fd] = 0; |
| 636 |
return(0); |
| 637 |
} |
| 638 |
return(-1); |
| 639 |
} |
| 640 |
|
| 641 |
int mus_cleanup_file_descriptors(void) |
| 642 |
{ |
| 643 |
/* error cleanup -- try to find C-opened files that are invisible to lisp and close them */ |
| 644 |
int fd,lim; |
| 645 |
if (!io_descriptors_ok) return(0); |
| 646 |
lim = BASE_FILE_DESCRIPTORS-1; |
| 647 |
if (max_descriptor < lim) lim = max_descriptor; |
| 648 |
for (fd=0;fd<=lim;fd++) |
| 649 |
if (io_data_format[fd] != SNDLIB_NO_SND) mus_close(fd); |
| 650 |
if ((io_files_ready) && (max_descriptor > BASE_FILE_DESCRIPTORS)) |
| 651 |
{ |
| 652 |
lim = max_descriptor - BASE_FILE_DESCRIPTORS; |
| 653 |
if (lim >= BASE_FILE_DESCRIPTORS) lim = BASE_FILE_DESCRIPTORS - 1; |
| 654 |
for (fd=0;fd<=lim;fd++) |
| 655 |
if (io_files[fd] != -1) |
| 656 |
mus_close(io_files[fd]); |
| 657 |
} |
| 658 |
return(0); |
| 659 |
} |
| 660 |
|
| 661 |
int mus_set_data_clipped (int tfd, int clipped) |
| 662 |
{ |
| 663 |
int fd; |
| 664 |
if (!io_descriptors_ok) return(0); |
| 665 |
fd = convert_fd(tfd); |
| 666 |
if (fd < 0) return(-1); |
| 667 |
io_data_clipped[fd] = clipped; |
| 668 |
return(0); |
| 669 |
} |
| 670 |
|
| 671 |
int mus_set_header_type (int tfd, int type) |
| 672 |
{ |
| 673 |
int fd; |
| 674 |
if (!io_descriptors_ok) return(0); |
| 675 |
fd = convert_fd(tfd); |
| 676 |
if (fd < 0) return(-1); |
| 677 |
io_header_type[fd] = type; |
| 678 |
return(0); |
| 679 |
} |
| 680 |
|
| 681 |
int mus_get_header_type(int tfd) |
| 682 |
{ |
| 683 |
int fd; |
| 684 |
if (!io_descriptors_ok) return(0); |
| 685 |
fd = convert_fd(tfd); |
| 686 |
if (fd < 0) return(-1); |
| 687 |
return(io_header_type[fd]); |
| 688 |
} |
| 689 |
|
| 690 |
int mus_set_chans (int tfd, int chans) |
| 691 |
{ |
| 692 |
int fd; |
| 693 |
if (!io_descriptors_ok) return(0); |
| 694 |
fd = convert_fd(tfd); |
| 695 |
if (fd < 0) return(-1); |
| 696 |
io_chans[fd] = chans; |
| 697 |
return(0); |
| 698 |
} |
| 699 |
|
| 700 |
|
| 701 |
/* ---------------- open, creat, close ---------------- */ |
| 702 |
|
| 703 |
int mus_open_read(char *arg) |
| 704 |
{ |
| 705 |
#ifdef MACOS |
| 706 |
return(open (arg, O_RDONLY)); |
| 707 |
#else |
| 708 |
int fd; |
| 709 |
#ifdef WINDOZE |
| 710 |
fd = open (arg, O_RDONLY | O_BINARY); |
| 711 |
#else |
| 712 |
fd = open (arg, O_RDONLY, 0); |
| 713 |
#endif |
| 714 |
return(fd); |
| 715 |
#endif |
| 716 |
} |
| 717 |
|
| 718 |
int mus_probe_file(char *arg) |
| 719 |
{ |
| 720 |
int fd; |
| 721 |
#ifdef MACOS |
| 722 |
fd = (open (arg, O_RDONLY)); |
| 723 |
#else |
| 724 |
#ifdef WINDOZE |
| 725 |
fd = open (arg, O_RDONLY | O_BINARY); |
| 726 |
#else |
| 727 |
#ifdef O_NONBLOCK |
| 728 |
fd = open(arg,O_RDONLY,O_NONBLOCK); |
| 729 |
#else |
| 730 |
fd = open(arg,O_RDONLY,0); |
| 731 |
#endif |
| 732 |
#endif |
| 733 |
#endif |
| 734 |
if (fd == -1) return(0); |
| 735 |
close(fd); |
| 736 |
return(1); |
| 737 |
} |
| 738 |
|
| 739 |
int mus_open_write(char *arg) |
| 740 |
{ |
| 741 |
int fd; |
| 742 |
#ifdef MACOS |
| 743 |
if ((fd = open(arg,O_RDWR)) == -1) |
| 744 |
#ifdef MPW_C |
| 745 |
fd = creat(arg); |
| 746 |
#else |
| 747 |
fd = creat(arg, 0); |
| 748 |
#endif |
| 749 |
else |
| 750 |
lseek(fd,0L,SEEK_END); |
| 751 |
#else |
| 752 |
#ifdef WINDOZE |
| 753 |
if ((fd = open(arg,O_RDWR | O_BINARY)) == -1) |
| 754 |
#else |
| 755 |
if ((fd = open(arg,O_RDWR,0)) == -1) |
| 756 |
#endif |
| 757 |
{ |
| 758 |
fd = creat(arg,0666); /* equivalent to the new open(arg,O_RDWR | O_CREAT | O_TRUNC, 0666) */ |
| 759 |
} |
| 760 |
else |
| 761 |
lseek(fd,0L,SEEK_END); |
| 762 |
#endif |
| 763 |
return(fd); |
| 764 |
} |
| 765 |
|
| 766 |
int mus_create(char *arg) |
| 767 |
{ |
| 768 |
#ifdef MACOS |
| 769 |
#ifdef MPW_C |
| 770 |
return(creat(arg)); |
| 771 |
#else |
| 772 |
return(creat(arg,0)); |
| 773 |
#endif |
| 774 |
#else |
| 775 |
int fd; |
| 776 |
fd = creat(arg,0666); |
| 777 |
return(fd); |
| 778 |
#endif |
| 779 |
} |
| 780 |
|
| 781 |
int mus_reopen_write(char *arg) |
| 782 |
{ |
| 783 |
#ifdef MACOS |
| 784 |
return(open(arg,O_RDWR)); |
| 785 |
#else |
| 786 |
int fd; |
| 787 |
#ifdef WINDOZE |
| 788 |
fd = open(arg,O_RDWR | O_BINARY); |
| 789 |
#else |
| 790 |
fd = open(arg,O_RDWR,0); |
| 791 |
#endif |
| 792 |
return(fd); |
| 793 |
#endif |
| 794 |
} |
| 795 |
|
| 796 |
int mus_close(int fd) |
| 797 |
{ |
| 798 |
mus_close_file_descriptors(fd); |
| 799 |
return(close(fd)); |
| 800 |
} |
| 801 |
|
| 802 |
|
| 803 |
|
| 804 |
/* ---------------- seek ---------------- */ |
| 805 |
|
| 806 |
long mus_seek(int tfd, long offset, int origin) |
| 807 |
{ |
| 808 |
int fd,siz; /* siz = datum size in bytes */ |
| 809 |
long loc,true_loc,header_end; |
| 810 |
if (!io_descriptors_ok) {mus_error(MUS_FILE_DESCRIPTORS_NOT_INITIALIZED,"mus_seek: file descriptors not initialized!"); return(-1);} |
| 811 |
if ((tfd == SNDLIB_DAC_CHANNEL) || (tfd == SNDLIB_DAC_REVERB)) return(0); |
| 812 |
fd = convert_fd(tfd); |
| 813 |
if (fd < 0) return(-1); |
| 814 |
if (io_data_format[fd] == SNDLIB_NO_SND) |
| 815 |
{ |
| 816 |
mus_error(MUS_NOT_A_SOUND_FILE,"mus_seek: invalid stream: %d (%d, %d, %d)",fd,tfd,(int)offset,origin); |
| 817 |
return(-1); |
| 818 |
} |
| 819 |
siz = io_bytes_per_sample[fd]; |
| 820 |
if ((siz == 2) || (origin != 0)) |
| 821 |
return(lseek(tfd,offset,origin)); |
| 822 |
else |
| 823 |
{ |
| 824 |
header_end = io_data_location[fd]; |
| 825 |
loc = offset - header_end; |
| 826 |
switch (siz) |
| 827 |
{ |
| 828 |
case 1: |
| 829 |
true_loc = lseek(tfd,header_end+(loc>>1),origin); |
| 830 |
/* now pretend we're still in 16-bit land and return where we "actually" are in that region */ |
| 831 |
/* that is, loc (in bytes) = how many (2-byte) samples into the file we want to go, return what we got */ |
| 832 |
return(header_end + ((true_loc - header_end)<<1)); |
| 833 |
break; |
| 834 |
case 3: |
| 835 |
true_loc = lseek(tfd,header_end+loc+(loc>>1),origin); |
| 836 |
return(true_loc + ((true_loc - header_end)>>1)); |
| 837 |
break; |
| 838 |
case 4: |
| 839 |
true_loc = lseek(tfd,header_end+(loc<<1),origin); |
| 840 |
return(header_end + ((true_loc - header_end)>>1)); |
| 841 |
break; |
| 842 |
case 8: |
| 843 |
true_loc = lseek(tfd,header_end+(loc<<2),origin); |
| 844 |
return(header_end + ((true_loc - header_end)>>2)); |
| 845 |
break; |
| 846 |
} |
| 847 |
} |
| 848 |
return(-1); |
| 849 |
} |
| 850 |
|
| 851 |
int mus_seek_frame(int tfd, int frame) |
| 852 |
{ |
| 853 |
int fd; |
| 854 |
if (!io_descriptors_ok) {mus_error(MUS_FILE_DESCRIPTORS_NOT_INITIALIZED,"mus_seek_frame: file descriptors not initialized!"); return(-1);} |
| 855 |
if ((tfd == SNDLIB_DAC_CHANNEL) || (tfd == SNDLIB_DAC_REVERB)) return(0); |
| 856 |
fd = convert_fd(tfd); |
| 857 |
if (fd < 0) return(-1); |
| 858 |
if (io_data_format[fd] == SNDLIB_NO_SND) |
| 859 |
{ |
| 860 |
mus_error(MUS_NOT_A_SOUND_FILE,"mus_seek_frame: invalid stream: %d (%d, %d)",fd,tfd,frame); |
| 861 |
return(-1); |
| 862 |
} |
| 863 |
return(lseek(tfd,io_data_location[fd] + (io_chans[fd] * frame * io_bytes_per_sample[fd]),SEEK_SET)); |
| 864 |
} |
| 865 |
|
| 866 |
|
| 867 |
|
| 868 |
/* ---------------- mulaw/alaw conversions ---------------- |
| 869 |
* |
| 870 |
* x : input signal with max value 32767 |
| 871 |
* mu : compression parameter (mu=255 used for telephony) |
| 872 |
* y = (32767/log(1+mu))*log(1+mu*abs(x)/32767)*sign(x); -- this isn't right -- typo? |
| 873 |
*/ |
| 874 |
|
| 875 |
/* from sox g711.c */ |
| 876 |
|
| 877 |
#define SIGN_BIT (0x80) /* Sign bit for a A-law byte. */ |
| 878 |
#define QUANT_MASK (0xf) /* Quantization field mask. */ |
| 879 |
#define NSEGS (8) /* Number of A-law segments. */ |
| 880 |
#define SEG_SHIFT (4) /* Left shift for segment number. */ |
| 881 |
#define SEG_MASK (0x70) /* Segment field mask. */ |
| 882 |
|
| 883 |
static short seg_end[8] = {0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF, 0x1FFF, 0x3FFF, 0x7FFF}; |
| 884 |
|
| 885 |
static int search(int val, short *table, int size) |
| 886 |
{ |
| 887 |
int i; |
| 888 |
for (i = 0; i < size; i++) {if (val <= *table++) return (i);} |
| 889 |
return (size); |
| 890 |
} |
| 891 |
|
| 892 |
static unsigned char to_alaw(int pcm_val) |
| 893 |
{ |
| 894 |
int mask,seg; |
| 895 |
unsigned char aval; |
| 896 |
if (pcm_val >= 0) {mask = 0xD5;} else {mask = 0x55; pcm_val = -pcm_val - 8;} |
| 897 |
seg = search(pcm_val, seg_end, 8); |
| 898 |
if (seg >= 8) return (0x7F ^ mask); |
| 899 |
else |
| 900 |
{ |
| 901 |
aval = seg << SEG_SHIFT; |
| 902 |
if (seg < 2) aval |= (pcm_val >> 4) & QUANT_MASK; else aval |= (pcm_val >> (seg + 3)) & QUANT_MASK; |
| 903 |
return (aval ^ mask); |
| 904 |
} |
| 905 |
} |
| 906 |
|
| 907 |
static const int alaw[256] = { |
| 908 |
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736, -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784, |
| 909 |
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368, -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392, |
| 910 |
-22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944, -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136, |
| 911 |
-11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472, -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568, |
| 912 |
-344, -328, -376, -360, -280, -264, -312, -296, -472, -456, -504, -488, -408, -392, -440, -424, |
| 913 |
-88, -72, -120, -104, -24, -8, -56, -40, -216, -200, -248, -232, -152, -136, -184, -168, |
| 914 |
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184, -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696, |
| 915 |
-688, -656, -752, -720, -560, -528, -624, -592, -944, -912, -1008, -976, -816, -784, -880, -848, |
| 916 |
5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736, 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784, |
| 917 |
2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368, 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392, |
| 918 |
22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944, 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136, |
| 919 |
11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472, 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568, |
| 920 |
344, 328, 376, 360, 280, 264, 312, 296, 472, 456, 504, 488, 408, 392, 440, 424, |
| 921 |
88, 72, 120, 104, 24, 8, 56, 40, 216, 200, 248, 232, 152, 136, 184, 168, |
| 922 |
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184, 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696, |
| 923 |
688, 656, 752, 720, 560, 528, 624, 592, 944, 912, 1008, 976, 816, 784, 880, 848 |
| 924 |
}; |
| 925 |
|
| 926 |
#if 0 |
| 927 |
static int from_alaw(unsigned char a_val) |
| 928 |
{ |
| 929 |
int t,seg; |
| 930 |
a_val ^= 0x55; |
| 931 |
t = (a_val & QUANT_MASK) << 4; |
| 932 |
seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT; |
| 933 |
switch (seg) |
| 934 |
{ |
| 935 |
case 0: t += 8; break; |
| 936 |
case 1: t += 0x108; break; |
| 937 |
default: t += 0x108; t <<= seg - 1; |
| 938 |
} |
| 939 |
return((a_val & SIGN_BIT) ? t : -t); |
| 940 |
} |
| 941 |
#endif |
| 942 |
|
| 943 |
#define BIAS (0x84) /* Bias for linear code. */ |
| 944 |
|
| 945 |
static unsigned char to_mulaw(int pcm_val) |
| 946 |
{ |
| 947 |
int mask; |
| 948 |
int seg; |
| 949 |
unsigned char uval; |
| 950 |
if (pcm_val < 0) {pcm_val = BIAS - pcm_val; mask = 0x7F;} else {pcm_val += BIAS; mask = 0xFF;} |
| 951 |
seg = search(pcm_val, seg_end, 8); |
| 952 |
if (seg >= 8) return (0x7F ^ mask); |
| 953 |
else |
| 954 |
{ |
| 955 |
uval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0xF); |
| 956 |
return (uval ^ mask); |
| 957 |
} |
| 958 |
} |
| 959 |
|
| 960 |
/* generated by SNDiMulaw on a NeXT -- see /usr/include/sound/mulaw.h */ |
| 961 |
static const int mulaw[256] = { |
| 962 |
-32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956, -23932, -22908, -21884, -20860, |
| 963 |
-19836, -18812, -17788, -16764, -15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412, |
| 964 |
-11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316, -7932, -7676, -7420, -7164, -6908, |
| 965 |
-6652, -6396, -6140, -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092, -3900, -3772, -3644, |
| 966 |
-3516, -3388, -3260, -3132, -3004, -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980, -1884, |
| 967 |
-1820, -1756, -1692, -1628, -1564, -1500, -1436, -1372, -1308, -1244, -1180, -1116, -1052, -988, |
| 968 |
-924, -876, -844, -812, -780, -748, -716, -684, -652, -620, -588, -556, -524, -492, -460, -428, |
| 969 |
-396, -372, -356, -340, -324, -308, -292, -276, -260, -244, -228, -212, -196, -180, -164, -148, |
| 970 |
-132, -120, -112, -104, -96, -88, -80, -72, -64, -56, -48, -40, -32, -24, -16, -8, 0, 32124, 31100, |
| 971 |
30076, 29052, 28028, 27004, 25980, 24956, 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764, |
| 972 |
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412, 11900, 11388, 10876, 10364, 9852, 9340, |
| 973 |
8828, 8316, 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140, 5884, 5628, 5372, 5116, 4860, 4604, |
| 974 |
4348, 4092, 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004, 2876, 2748, 2620, 2492, 2364, 2236, |
| 975 |
2108, 1980, 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436, 1372, 1308, 1244, 1180, 1116, 1052, |
| 976 |
988, 924, 876, 844, 812, 780, 748, 716, 684, 652, 620, 588, 556, 524, 492, 460, 428, 396, 372, |
| 977 |
356, 340, 324, 308, 292, 276, 260, 244, 228, 212, 196, 180, 164, 148, 132, 120, 112, 104, 96, |
| 978 |
88, 80, 72, 64, 56, 48, 40, 32, 24, 16, 8, 0}; |
| 979 |
|
| 980 |
#if 0 |
| 981 |
/* in case it's ever needed, here's the mulaw to linear converter from g711.c -- identical to table above */ |
| 982 |
static int from_mulaw(unsigned char u_val) |
| 983 |
{ |
| 984 |
int t; |
| 985 |
u_val = ~u_val; |
| 986 |
t = ((u_val & QUANT_MASK) << 3) + BIAS; |
| 987 |
t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT; |
| 988 |
return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS)); |
| 989 |
} |
| 990 |
#endif |
| 991 |
|
| 992 |
/* ---------------- read/write buffer allocation ---------------- */ |
| 993 |
|
| 994 |
#if LONG_INT_P |
| 995 |
static int **long_int_p_table = NULL; |
| 996 |
static int long_int_p_table_size = 0; |
| 997 |
|
| 998 |
int *delist_ptr(int arr) {return(long_int_p_table[arr]);} |
| 999 |
|
| 1000 |
int list_ptr(int *arr) |
| 1001 |
{ |
| 1002 |
int i,loc; |
| 1003 |
loc = -1; |
| 1004 |
for (i=0;i<long_int_p_table_size;i++) |
| 1005 |
{ |
| 1006 |
if (long_int_p_table[i] == NULL) |
| 1007 |
{ |
| 1008 |
loc = i; |
| 1009 |
break; |
| 1010 |
} |
| 1011 |
} |
| 1012 |
if (loc == -1) |
| 1013 |
{ |
| 1014 |
loc = long_int_p_table_size; |
| 1015 |
long_int_p_table_size+=16; |
| 1016 |
if (long_int_p_table) |
| 1017 |
{ |
| 1018 |
long_int_p_table = (int **)REALLOC(long_int_p_table,long_int_p_table_size * sizeof(int *)); |
| 1019 |
for (i=loc;i<long_int_p_table_size;i++) long_int_p_table[i] = NULL; |
| 1020 |
} |
| 1021 |
else |
| 1022 |
long_int_p_table = (int **)CALLOC(long_int_p_table_size,sizeof(int *)); |
| 1023 |
} |
| 1024 |
long_int_p_table[loc] = arr; |
| 1025 |
return(loc); |
| 1026 |
} |
| 1027 |
|
| 1028 |
void freearray(int ip_1) |
| 1029 |
{ |
| 1030 |
int *ip; |
| 1031 |
ip = delist_ptr(ip_1); |
| 1032 |
if (ip) FREE(ip); |
| 1033 |
long_int_p_table[ip_1] = NULL; |
| 1034 |
} |
| 1035 |
#else |
| 1036 |
void freearray(int *ip) {if (ip) FREE(ip);} |
| 1037 |
#endif |
| 1038 |
|
| 1039 |
#define BUFLIM (64*1024) |
| 1040 |
|
| 1041 |
static int checked_write(int fd, char *buf, int chars) |
| 1042 |
{ |
| 1043 |
#ifdef CLM |
| 1044 |
#ifndef MACOS |
| 1045 |
long lisp_call(int index); |
| 1046 |
#endif |
| 1047 |
#endif |
| 1048 |
int bytes,cfd; |
| 1049 |
if (fd == SNDLIB_DAC_CHANNEL) |
| 1050 |
{ |
| 1051 |
write_audio(rt_ap_out,buf,chars); |
| 1052 |
} |
| 1053 |
else |
| 1054 |
{ |
| 1055 |
bytes=write(fd,buf,chars); |
| 1056 |
if (bytes != chars) |
| 1057 |
{ |
| 1058 |
if (!io_descriptors_ok) {mus_error(MUS_FILE_DESCRIPTORS_NOT_INITIALIZED,"checked_write: file descriptors not initialized!"); return(-1);} |
| 1059 |
cfd = convert_fd(fd); |
| 1060 |
if (cfd < 0) return(-1); |
| 1061 |
if (io_data_format[cfd] == SNDLIB_NO_SND) mus_error(MUS_FILE_CLOSED,"checked_write called on closed file"); |
| 1062 |
#if LONG_INT_P |
| 1063 |
mus_error(MUS_WRITE_ERROR,"IO write error (%s): %d of %d bytes written for %d from %d (%d %d %d)\n", |
| 1064 |
strerror(errno), |
| 1065 |
bytes,chars,fd,cfd,io_bytes_per_sample[cfd],io_data_format[cfd],io_data_location[cfd]); |
| 1066 |
#else |
| 1067 |
#ifndef MACOS |
| 1068 |
mus_error(MUS_WRITE_ERROR,"IO write error (%s): %d of %d bytes written for %d from %d (%d %d %d %d)\n", |
| 1069 |
strerror(errno), |
| 1070 |
bytes,chars,fd,cfd,(int)buf,io_bytes_per_sample[cfd],io_data_format[cfd],io_data_location[cfd]); |
| 1071 |
#else |
| 1072 |
mus_error(MUS_WRITE_ERROR,"IO write error: %d of %d bytes written for %d from %d (%d %d %d %d)\n", |
| 1073 |
bytes,chars,fd,cfd,(int)buf,io_bytes_per_sample[cfd],io_data_format[cfd],io_data_location[cfd]); |
| 1074 |
#endif |
| 1075 |
#endif |
| 1076 |
return(-1); |
| 1077 |
} |
| 1078 |
} |
| 1079 |
return(0); |
| 1080 |
} |
| 1081 |
|
| 1082 |
|
| 1083 |
|
| 1084 |
/* ---------------- read ---------------- */ |
| 1085 |
|
| 1086 |
/* normally we assume a 16-bit fractional part, but sometimes user want 24-bits */ |
| 1087 |
static int shift_24_choice = 0; |
| 1088 |
#ifdef CLM |
| 1089 |
int get_shift_24_choice(void) {return(shift_24_choice);} |
| 1090 |
void set_shift_24_choice(int choice) {shift_24_choice = choice;} |
| 1091 |
#endif |
| 1092 |
|
| 1093 |
int mus_read_any(int tfd, int beg, int chans, int nints, int **bufs, int *cm) |
| 1094 |
{ |
| 1095 |
int fd; |
| 1096 |
int bytes,j,lim,siz,total,leftover,total_read,k,loc,oldloc,siz_chans,buflim; |
| 1097 |
unsigned char *jchar; |
| 1098 |
char *charbuf = NULL; |
| 1099 |
int *buffer; |
| 1100 |
if (!io_descriptors_ok) {mus_error(MUS_FILE_DESCRIPTORS_NOT_INITIALIZED,"mus_read: file descriptors not initialized!"); return(-1);} |
| 1101 |
if (nints <= 0) return(0); |
| 1102 |
fd = convert_fd(tfd); |
| 1103 |
if (fd < 0) return(-1); |
| 1104 |
if (io_data_format[fd] == SNDLIB_NO_SND) {mus_error(MUS_FILE_CLOSED,"read_any called on closed file"); return(-1);} |
| 1105 |
charbuf = (char *)CALLOC(BUFLIM,sizeof(char)); |
| 1106 |
if (charbuf == NULL) {mus_error(MUS_MEMORY_ALLOCATION_FAILED,"IO buffer allocation trouble"); return(-1);} |
| 1107 |
siz = io_bytes_per_sample[fd]; |
| 1108 |
siz_chans = siz*chans; |
| 1109 |
leftover = (nints*siz_chans); |
| 1110 |
k = (BUFLIM) % siz_chans; |
| 1111 |
if (k != 0) /* for example, 3 channel output of 1-byte (mulaw) samples will need a mod 3 buffer */ |
| 1112 |
buflim = (BUFLIM) - k; |
| 1113 |
else buflim = BUFLIM; |
| 1114 |
total_read = 0; |
| 1115 |
loc = beg; |
| 1116 |
while (leftover > 0) |
| 1117 |
{ |
| 1118 |
bytes = leftover; |
| 1119 |
if (bytes > buflim) {leftover = (bytes-buflim); bytes = buflim;} else leftover = 0; |
| 1120 |
total = read(tfd,charbuf,bytes); |
| 1121 |
if (total <= 0) |
| 1122 |
{ |
| 1123 |
/* zero out trailing section (some callers don't check the returned value) -- this added 9-May-99 */ |
| 1124 |
lim = beg+nints; |
| 1125 |
if (loc < lim) |
| 1126 |
{ |
| 1127 |
for (k=0;k<chans;k++) |
| 1128 |
{ |
| 1129 |
if ((cm == NULL) || (cm[k])) |
| 1130 |
{ |
| 1131 |
for (j=loc;j<lim;j++) |
| 1132 |
bufs[k][j] = 0; |
| 1133 |
} |
| 1134 |
} |
| 1135 |
} |
| 1136 |
FREE(charbuf); |
| 1137 |
return(total_read); |
| 1138 |
} |
| 1139 |
lim = (int) (total / siz_chans); /* this divide must be exact (hence the buflim calc above) */ |
| 1140 |
total_read += lim; |
| 1141 |
oldloc = loc; |
| 1142 |
|
| 1143 |
for (k=0;k<chans;k++) |
| 1144 |
{ |
| 1145 |
if ((cm == NULL) || (cm[k])) |
| 1146 |
{ |
| 1147 |
buffer = (int *)(bufs[k]); |
| 1148 |
if (buffer) |
| 1149 |
{ |
| 1150 |
loc = oldloc; |
| 1151 |
jchar = (unsigned char *)charbuf; |
| 1152 |
jchar += (k*siz); |
| 1153 |
switch (io_data_format[fd]) |
| 1154 |
{ |
| 1155 |
case SNDLIB_16_LINEAR: |
| 1156 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int)m_big_endian_short(jchar); |
| 1157 |
break; |
| 1158 |
case SNDLIB_16_LINEAR_LITTLE_ENDIAN: |
| 1159 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int)m_little_endian_short(jchar); |
| 1160 |
break; |
| 1161 |
case SNDLIB_32_LINEAR: |
| 1162 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = m_big_endian_int(jchar); |
| 1163 |
break; |
| 1164 |
case SNDLIB_32_LINEAR_LITTLE_ENDIAN: |
| 1165 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = m_little_endian_int(jchar); |
| 1166 |
break; |
| 1167 |
case SNDLIB_8_MULAW: |
| 1168 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = mulaw[*jchar]; |
| 1169 |
break; |
| 1170 |
case SNDLIB_8_ALAW: |
| 1171 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = alaw[*jchar]; |
| 1172 |
break; |
| 1173 |
case SNDLIB_8_LINEAR: |
| 1174 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int)(((signed char)(*jchar)) << 8); |
| 1175 |
break; |
| 1176 |
case SNDLIB_8_UNSIGNED: |
| 1177 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int) ((((int)(*jchar))-128) << 8); |
| 1178 |
break; |
| 1179 |
case SNDLIB_32_FLOAT: |
| 1180 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int) (SNDLIB_SNDFIX*(m_big_endian_float(jchar))); |
| 1181 |
break; |
| 1182 |
case SNDLIB_64_DOUBLE: |
| 1183 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int) (SNDLIB_SNDFIX*(m_big_endian_double(jchar))); |
| 1184 |
break; |
| 1185 |
case SNDLIB_32_FLOAT_LITTLE_ENDIAN: |
| 1186 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int) (SNDLIB_SNDFIX*(m_little_endian_float(jchar))); |
| 1187 |
break; |
| 1188 |
case SNDLIB_64_DOUBLE_LITTLE_ENDIAN: |
| 1189 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int) (SNDLIB_SNDFIX*(m_little_endian_double(jchar))); |
| 1190 |
break; |
| 1191 |
case SNDLIB_16_UNSIGNED: |
| 1192 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = ((int)(m_big_endian_unsigned_short(jchar)) - 32768); |
| 1193 |
break; |
| 1194 |
case SNDLIB_16_UNSIGNED_LITTLE_ENDIAN: |
| 1195 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = ((int)(m_little_endian_unsigned_short(jchar)) - 32768); |
| 1196 |
break; |
| 1197 |
case SNDLIB_32_VAX_FLOAT: |
| 1198 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) buffer[loc] = (int)from_vax_float(jchar); |
| 1199 |
break; |
| 1200 |
case SNDLIB_24_LINEAR: |
| 1201 |
if (shift_24_choice == 0) |
| 1202 |
{ |
| 1203 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) |
| 1204 |
buffer[loc] = (int)(((jchar[0]<<24)+(jchar[1]<<16))>>16); |
| 1205 |
} |
| 1206 |
else |
| 1207 |
{ |
| 1208 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) |
| 1209 |
buffer[loc] = (int)(((jchar[0]<<24)+(jchar[1]<<16)+(jchar[2]<<8))>>8); |
| 1210 |
} |
| 1211 |
break; |
| 1212 |
case SNDLIB_24_LINEAR_LITTLE_ENDIAN: |
| 1213 |
if (shift_24_choice == 0) |
| 1214 |
{ |
| 1215 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) |
| 1216 |
buffer[loc] = (int)(((jchar[2]<<24)+(jchar[1]<<16))>>16); |
| 1217 |
} |
| 1218 |
else |
| 1219 |
{ |
| 1220 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) |
| 1221 |
buffer[loc] = (int)(((jchar[2]<<24)+(jchar[1]<<16)+(jchar[0]<<8))>>8); |
| 1222 |
} |
| 1223 |
break; |
| 1224 |
} |
| 1225 |
} |
| 1226 |
} |
| 1227 |
} |
| 1228 |
} |
| 1229 |
FREE(charbuf); |
| 1230 |
return(total_read); |
| 1231 |
} |
| 1232 |
|
| 1233 |
int mus_read(int fd, int beg, int end, int chans, int **bufs) |
| 1234 |
{ |
| 1235 |
int num,rtn,i,k; |
| 1236 |
int *buffer; |
| 1237 |
num=(end-beg+1); |
| 1238 |
rtn=mus_read_any(fd,beg,chans,num,bufs,NULL); |
| 1239 |
if (rtn == -1) return(-1); |
| 1240 |
if (rtn<num) |
| 1241 |
{ |
| 1242 |
for (k=0;k<chans;k++) |
| 1243 |
{ |
| 1244 |
buffer=(int *)(bufs[k]); |
| 1245 |
for (i=rtn+beg;i<=end;i++) |
| 1246 |
{ |
| 1247 |
buffer[i]=0; |
| 1248 |
} |
| 1249 |
} |
| 1250 |
} |
| 1251 |
return(num); |
| 1252 |
} |
| 1253 |
|
| 1254 |
int mus_read_chans(int fd, int beg, int end, int chans, int **bufs, int *cm) |
| 1255 |
{ |
| 1256 |
/* an optimization of mus_read -- just reads the desired channels */ |
| 1257 |
int num,rtn,i,k; |
| 1258 |
int *buffer; |
| 1259 |
num=(end-beg+1); |
| 1260 |
rtn=mus_read_any(fd,beg,chans,num,bufs,cm); |
| 1261 |
if (rtn == -1) return(-1); |
| 1262 |
if (rtn<num) |
| 1263 |
{ |
| 1264 |
for (k=0;k<chans;k++) |
| 1265 |
{ |
| 1266 |
if ((cm == NULL) || (cm[k])) |
| 1267 |
{ |
| 1268 |
buffer=(int *)(bufs[k]); |
| 1269 |
for (i=rtn+beg;i<=end;i++) |
| 1270 |
{ |
| 1271 |
buffer[i]=0; |
| 1272 |
} |
| 1273 |
} |
| 1274 |
} |
| 1275 |
} |
| 1276 |
return(num); |
| 1277 |
} |
| 1278 |
|
| 1279 |
|
| 1280 |
/* ---------------- write ---------------- */ |
| 1281 |
|
| 1282 |
#ifdef WINDOZE |
| 1283 |
#undef min |
| 1284 |
#endif |
| 1285 |
|
| 1286 |
#define min(x,y) ((x) < (y) ? (x) : (y)) |
| 1287 |
|
| 1288 |
int mus_write_zeros(int tfd, int num) |
| 1289 |
{ |
| 1290 |
int i,lim,curnum,fd,err; |
| 1291 |
char *charbuf = NULL; |
| 1292 |
if (tfd == -1) return(-1); |
| 1293 |
if (tfd == SNDLIB_DAC_REVERB) return(0); |
| 1294 |
if (!io_descriptors_ok) {mus_error(MUS_FILE_DESCRIPTORS_NOT_INITIALIZED,"mus_write: file descriptors not initialized!"); return(-1);} |
| 1295 |
fd = convert_fd(tfd); |
| 1296 |
if (fd < 0) return(-1); |
| 1297 |
if (io_data_format[fd] == SNDLIB_NO_SND) {mus_error(MUS_FILE_CLOSED,"write_zeros called on closed file"); return(-1);} |
| 1298 |
charbuf = (char *)CALLOC(BUFLIM,sizeof(char)); |
| 1299 |
if (charbuf == NULL) {mus_error(MUS_MEMORY_ALLOCATION_FAILED,"IO buffer allocation trouble"); return(-1);} |
| 1300 |
lim = num*(io_bytes_per_sample[fd]); |
| 1301 |
curnum=min(lim,BUFLIM); |
| 1302 |
for (i=0;i<curnum;i++) charbuf[i]=0; |
| 1303 |
while (curnum>0) |
| 1304 |
{ |
| 1305 |
err = checked_write(tfd,charbuf,curnum); |
| 1306 |
if (err == -1) return(-1); |
| 1307 |
lim -= (BUFLIM); |
| 1308 |
curnum=min(lim,BUFLIM); |
| 1309 |
} |
| 1310 |
FREE(charbuf); |
| 1311 |
return(num); |
| 1312 |
} |
| 1313 |
|
| 1314 |
|
| 1315 |
#ifdef CLM |
| 1316 |
void mus_write_float(int fd, float val) {write(fd,(char *)(&val),4);} |
| 1317 |
|
| 1318 |
#if defined(ACL4) && defined(ALPHA) |
| 1319 |
/* in this case, the array passed from lisp is a list of table indices */ |
| 1320 |
void mus_write_1(int tfd, int beg, int end, int chans, int *buflist) |
| 1321 |
{ |
| 1322 |
int i; |
| 1323 |
int **bufs; |
| 1324 |
bufs = (int **)CALLOC(chans,sizeof(int *)); |
| 1325 |
for (i=0;i<chans;i++) bufs[i] = delist_ptr(buflist[i]); |
| 1326 |
mus_write(tfd,beg,end,chans,bufs); |
| 1327 |
FREE(bufs); |
| 1328 |
} |
| 1329 |
void mus_read_1(int fd, int beg, int end, int chans, int *buflist) |
| 1330 |
{ |
| 1331 |
int i; |
| 1332 |
int **bufs; |
| 1333 |
bufs = (int **)CALLOC(chans,sizeof(int *)); |
| 1334 |
for (i=0;i<chans;i++) bufs[i] = delist_ptr(buflist[i]); |
| 1335 |
mus_read(fd,beg,end,chans,bufs); |
| 1336 |
FREE(bufs); |
| 1337 |
} |
| 1338 |
#endif |
| 1339 |
#endif |
| 1340 |
|
| 1341 |
int mus_write(int tfd, int beg, int end, int chans, int **bufs) |
| 1342 |
{ |
| 1343 |
int fd,err; |
| 1344 |
int bytes,j,k,lim,siz,leftover,loc,bk,oldloc,buflim,siz_chans,cliploc; |
| 1345 |
unsigned char *jchar; |
| 1346 |
char *charbuf = NULL; |
| 1347 |
int *buffer; |
| 1348 |
if (tfd == -1) return(-1); |
| 1349 |
if (tfd == SNDLIB_DAC_REVERB) return(0); |
| 1350 |
if (!io_descriptors_ok) {mus_error(MUS_FILE_DESCRIPTORS_NOT_INITIALIZED,"mus_write: file descriptors not initialized!"); return(-1);} |
| 1351 |
fd = convert_fd(tfd); |
| 1352 |
if (fd < 0) return(-1); |
| 1353 |
if (io_data_format[fd] == SNDLIB_NO_SND) {mus_error(MUS_FILE_CLOSED,"write called on closed file"); return(-1);} |
| 1354 |
charbuf = (char *)CALLOC(BUFLIM,sizeof(char)); |
| 1355 |
if (charbuf == NULL) {mus_error(MUS_MEMORY_ALLOCATION_FAILED,"IO buffer allocation trouble"); return(-1);} |
| 1356 |
siz = io_bytes_per_sample[fd]; |
| 1357 |
lim=(end-beg+1); |
| 1358 |
siz_chans = siz*chans; |
| 1359 |
leftover = lim*siz_chans; |
| 1360 |
k = (BUFLIM) % siz_chans; |
| 1361 |
if (k != 0) |
| 1362 |
buflim = (BUFLIM) - k; |
| 1363 |
else buflim = BUFLIM; |
| 1364 |
loc = beg; |
| 1365 |
while (leftover > 0) |
| 1366 |
{ |
| 1367 |
bytes = leftover; |
| 1368 |
if (bytes > buflim) {leftover = (bytes-buflim); bytes = buflim;} else leftover = 0; |
| 1369 |
lim = (int)(bytes/siz_chans); /* see note above */ |
| 1370 |
oldloc = loc; |
| 1371 |
|
| 1372 |
for (k=0;k<chans;k++) |
| 1373 |
{ |
| 1374 |
loc = oldloc; |
| 1375 |
buffer = (int *)(bufs[k]); |
| 1376 |
if (io_data_clipped[fd]) |
| 1377 |
{ |
| 1378 |
cliploc = oldloc; |
| 1379 |
for (j=0;j<lim;j++,cliploc++) |
| 1380 |
{ |
| 1381 |
if (buffer[cliploc] > 32767) |
| 1382 |
buffer[cliploc] = 32767; |
| 1383 |
else |
| 1384 |
if (buffer[cliploc] < -32768) |
| 1385 |
buffer[cliploc] = -32768; |
| 1386 |
} |
| 1387 |
} |
| 1388 |
jchar = (unsigned char *)charbuf; |
| 1389 |
jchar += (k*siz); |
| 1390 |
switch (io_data_format[fd]) |
| 1391 |
{ |
| 1392 |
case SNDLIB_16_LINEAR: |
| 1393 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_big_endian_short(jchar,(short)(buffer[loc])); |
| 1394 |
break; |
| 1395 |
case SNDLIB_16_LINEAR_LITTLE_ENDIAN: |
| 1396 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_little_endian_short(jchar,(short)(buffer[loc])); |
| 1397 |
break; |
| 1398 |
case SNDLIB_32_LINEAR: |
| 1399 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_big_endian_int(jchar,buffer[loc]); |
| 1400 |
break; |
| 1401 |
case SNDLIB_32_LINEAR_LITTLE_ENDIAN: |
| 1402 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_little_endian_int(jchar,buffer[loc]); |
| 1403 |
break; |
| 1404 |
case SNDLIB_8_MULAW: |
| 1405 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) (*jchar) = to_mulaw(buffer[loc]); |
| 1406 |
break; |
| 1407 |
case SNDLIB_8_ALAW: |
| 1408 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) (*jchar) = to_alaw(buffer[loc]); |
| 1409 |
break; |
| 1410 |
case SNDLIB_8_LINEAR: |
| 1411 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) (*((signed char *)jchar)) = ((buffer[loc])>>8); |
| 1412 |
break; |
| 1413 |
case SNDLIB_8_UNSIGNED: |
| 1414 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) (*jchar) = ((buffer[loc])>>8)+128; |
| 1415 |
break; |
| 1416 |
case SNDLIB_32_FLOAT: |
| 1417 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_big_endian_float(jchar,(SNDLIB_SNDFLT * (buffer[loc]))); |
| 1418 |
break; |
| 1419 |
case SNDLIB_32_FLOAT_LITTLE_ENDIAN: |
| 1420 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_little_endian_float(jchar,(SNDLIB_SNDFLT * (buffer[loc]))); |
| 1421 |
break; |
| 1422 |
case SNDLIB_64_DOUBLE: |
| 1423 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_big_endian_double(jchar,(SNDLIB_SNDFLT * (buffer[loc]))); |
| 1424 |
break; |
| 1425 |
case SNDLIB_64_DOUBLE_LITTLE_ENDIAN: |
| 1426 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_little_endian_double(jchar,(SNDLIB_SNDFLT * (buffer[loc]))); |
| 1427 |
break; |
| 1428 |
case SNDLIB_16_UNSIGNED: |
| 1429 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_big_endian_unsigned_short(jchar,(short)(buffer[loc] + 32768)); |
| 1430 |
break; |
| 1431 |
case SNDLIB_16_UNSIGNED_LITTLE_ENDIAN: |
| 1432 |
for (j=0;j<lim;j++,loc++,jchar+=siz_chans) m_set_little_endian_unsigned_short(jchar,(short)(buffer[loc] + 32768)); |
| 1433 |
break; |
| 1434 |
case SNDLIB_24_LINEAR: |
| 1435 |
bk=(k*3); |
| 1436 |
if (shift_24_choice == 0) |
| 1437 |
{ |
| 1438 |
for (j=0;j<lim;j++,loc++,bk+=(chans*3)) |
| 1439 |
{ |
| 1440 |
charbuf[bk]=((buffer[loc])>>8); |
| 1441 |
charbuf[bk+1]=((buffer[loc])&0xFF); |
| 1442 |
charbuf[bk+2]=0; |
| 1443 |
} |
| 1444 |
} |
| 1445 |
else |
| 1446 |
{ |
| 1447 |
for (j=0;j<lim;j++,loc++,bk+=(chans*3)) |
| 1448 |
{ |
| 1449 |
charbuf[bk]=((buffer[loc])>>16); |
| 1450 |
charbuf[bk+1]=((buffer[loc])>>8); |
| 1451 |
charbuf[bk+2]=((buffer[loc])&0xFF); |
| 1452 |
} |
| 1453 |
} |
| 1454 |
break; |
| 1455 |
case SNDLIB_24_LINEAR_LITTLE_ENDIAN: |
| 1456 |
bk=(k*3); |
| 1457 |
if (shift_24_choice == 0) |
| 1458 |
{ |
| 1459 |
for (j=0;j<lim;j++,loc++,bk+=(chans*3)) |
| 1460 |
{ |
| 1461 |
charbuf[bk+2]=((buffer[loc])>>8); |
| 1462 |
charbuf[bk+1]=((buffer[loc])&0xFF); |
| 1463 |
charbuf[bk]=0; |
| 1464 |
} |
| 1465 |
} |
| 1466 |
else |
| 1467 |
{ |
| 1468 |
for (j=0;j<lim;j++,loc++,bk+=(chans*3)) |
| 1469 |
{ |
| 1470 |
charbuf[bk+2]=((buffer[loc])>>16); |
| 1471 |
charbuf[bk+1]=((buffer[loc])>>8); |
| 1472 |
charbuf[bk]=((buffer[loc])&0xFF); |
| 1473 |
} |
| 1474 |
} |
| 1475 |
break; |
| 1476 |
} |
| 1477 |
} |
| 1478 |
err = checked_write(tfd,charbuf,bytes); |
| 1479 |
if (err == -1) {FREE(charbuf); return(-1);} |
| 1480 |
} |
| 1481 |
FREE(charbuf); |
| 1482 |
return(0); |
| 1483 |
} |
| 1484 |
|
| 1485 |
int mus_float_sound(char *charbuf, int samps, int charbuf_format, float *buffer) |
| 1486 |
{ |
| 1487 |
/* translate whatever is in charbuf to 32-bit floats still interleaved */ |
| 1488 |
int j,siz; |
| 1489 |
unsigned char *jchar; |
| 1490 |
siz = mus_format2bytes(charbuf_format); |
| 1491 |
jchar = (unsigned char *)charbuf; |
| 1492 |
switch (charbuf_format) |
| 1493 |
{ |
| 1494 |
case SNDLIB_16_LINEAR: |
| 1495 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(m_big_endian_short(jchar)); |
| 1496 |
break; |
| 1497 |
case SNDLIB_16_LINEAR_LITTLE_ENDIAN: |
| 1498 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(m_little_endian_short(jchar)); |
| 1499 |
break; |
| 1500 |
case SNDLIB_32_LINEAR: |
| 1501 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(m_big_endian_int(jchar)); |
| 1502 |
break; |
| 1503 |
case SNDLIB_32_LINEAR_LITTLE_ENDIAN: |
| 1504 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(m_little_endian_int(jchar)); |
| 1505 |
break; |
| 1506 |
case SNDLIB_8_MULAW: |
| 1507 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(mulaw[*jchar]); |
| 1508 |
break; |
| 1509 |
case SNDLIB_8_ALAW: |
| 1510 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(alaw[*jchar]); |
| 1511 |
break; |
| 1512 |
case SNDLIB_8_LINEAR: |
| 1513 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)((int)((*((signed char *)jchar)) << 8)); |
| 1514 |
break; |
| 1515 |
case SNDLIB_8_UNSIGNED: |
| 1516 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)((int) ((((int)(*jchar))-128) << 8)); |
| 1517 |
break; |
| 1518 |
case SNDLIB_24_LINEAR: |
| 1519 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)((int)(((jchar[0]<<24)+(jchar[1]<<16))>>16)); |
| 1520 |
break; |
| 1521 |
case SNDLIB_24_LINEAR_LITTLE_ENDIAN: |
| 1522 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)((int)(((jchar[2]<<24)+(jchar[1]<<16))>>16)); |
| 1523 |
break; |
| 1524 |
case SNDLIB_32_FLOAT: |
| 1525 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = m_big_endian_float(jchar); |
| 1526 |
break; |
| 1527 |
case SNDLIB_64_DOUBLE: |
| 1528 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(m_big_endian_double(jchar)); |
| 1529 |
break; |
| 1530 |
case SNDLIB_32_FLOAT_LITTLE_ENDIAN: |
| 1531 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = m_little_endian_float(jchar); |
| 1532 |
break; |
| 1533 |
case SNDLIB_64_DOUBLE_LITTLE_ENDIAN: |
| 1534 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(m_little_endian_double(jchar)); |
| 1535 |
break; |
| 1536 |
case SNDLIB_16_UNSIGNED: |
| 1537 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)(((int)(m_big_endian_unsigned_short(jchar)) - 32768)); |
| 1538 |
break; |
| 1539 |
case SNDLIB_32_VAX_FLOAT: |
| 1540 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)((int)from_vax_float(jchar)); |
| 1541 |
break; |
| 1542 |
case SNDLIB_16_UNSIGNED_LITTLE_ENDIAN: |
| 1543 |
for (j=0;j<samps;j++,jchar+=siz) buffer[j] = (float)((int)(m_little_endian_unsigned_short(jchar)) - 32768); |
| 1544 |
break; |
| 1545 |
default: return(-1); break; |
| 1546 |
} |
| 1547 |
return(0); |
| 1548 |
} |
| 1549 |
|
| 1550 |
#ifdef CLM |
| 1551 |
|
| 1552 |
/* originally part of clmnet.c, but requires endian handlers and is easier to deal with on the Mac if it's in this file */ |
| 1553 |
int net_mix(int fd, int loc, char *buf1, char *buf2, int bytes) |
| 1554 |
{ |
| 1555 |
#if defined(SNDLIB_LITTLE_ENDIAN) || defined(SUN) |
| 1556 |
unsigned char*b1,*b2; |
| 1557 |
#else |
| 1558 |
short *dat1,*dat2; |
| 1559 |
#endif |
| 1560 |
int i,lim,rtn; |
| 1561 |
lim = bytes>>1; |
| 1562 |
lseek(fd,loc,SEEK_SET); |
| 1563 |
rtn = read(fd,buf1,bytes); |
| 1564 |
if (rtn < bytes) |
| 1565 |
{ |
| 1566 |
for (i=rtn;i<bytes;i++) buf1[i]=buf2[i]; |
| 1567 |
lim = rtn>>1; |
| 1568 |
} |
| 1569 |
lseek(fd,loc,SEEK_SET); |
| 1570 |
#if defined(SNDLIB_LITTLE_ENDIAN) || defined(SUN) |
| 1571 |
/* all intermediate results are written as big-endian shorts (NeXT output) */ |
| 1572 |
b1 = (unsigned char *)buf1; |
| 1573 |
b2 = (unsigned char *)buf2; |
| 1574 |
for (i=0;i<lim;i++,b1+=2,b2+=2) mus_set_big_endian_short(b1,(short)(mus_big_endian_short(b1) + mus_big_endian_short(b2))); |
| 1575 |
#else |
| 1576 |
dat1 = (short *)buf1; |
| 1577 |
dat2 = (short *)buf2; |
| 1578 |
for (i=0;i<lim;i++) dat1[i] += dat2[i]; |
| 1579 |
#endif |
| 1580 |
write(fd,buf1,bytes); |
| 1581 |
return(0); |
| 1582 |
} |
| 1583 |
#endif |
| 1584 |
|
| 1585 |
int mus_unshort_sound(short *in_buf, int samps, int new_format, char *out_buf) |
| 1586 |
{ |
| 1587 |
int j,siz; |
| 1588 |
unsigned char *jchar; |
| 1589 |
siz = mus_format2bytes(new_format); |
| 1590 |
jchar = (unsigned char *)out_buf; |
| 1591 |
switch (new_format) |
| 1592 |
{ |
| 1593 |
case SNDLIB_16_LINEAR: |
| 1594 |
for (j=0;j<samps;j++,jchar+=siz) m_set_big_endian_short(jchar,in_buf[j]); |
| 1595 |
break; |
| 1596 |
case SNDLIB_16_LINEAR_LITTLE_ENDIAN: |
| 1597 |
for (j=0;j<samps;j++,jchar+=siz) m_set_little_endian_short(jchar,in_buf[j]); |
| 1598 |
break; |
| 1599 |
case SNDLIB_32_LINEAR: |
| 1600 |
for (j=0;j<samps;j++,jchar+=siz) m_set_big_endian_int(jchar,(int)in_buf[j]); |
| 1601 |
break; |
| 1602 |
case SNDLIB_32_LINEAR_LITTLE_ENDIAN: |
| 1603 |
for (j=0;j<samps;j++,jchar+=siz) m_set_little_endian_int(jchar,(int)in_buf[j]); |
| 1604 |
break; |
| 1605 |
case SNDLIB_8_MULAW: |
| 1606 |
for (j=0;j<samps;j++,jchar+=siz) (*jchar) = to_mulaw(in_buf[j]); |
| 1607 |
break; |
| 1608 |
case SNDLIB_8_ALAW: |
| 1609 |
for (j=0;j<samps;j++,jchar+=siz) (*jchar) = to_alaw(in_buf[j]); |
| 1610 |
break; |
| 1611 |
case SNDLIB_8_LINEAR: |
| 1612 |
for (j=0;j<samps;j++,jchar+=siz) (*((signed char *)jchar)) = ((in_buf[j])>>8); |
| 1613 |
break; |
| 1614 |
case SNDLIB_8_UNSIGNED: |
| 1615 |
for (j=0;j<samps;j++,jchar+=siz) (*jchar) = ((in_buf[j])>>8)+128; |
| 1616 |
break; |
| 1617 |
case SNDLIB_32_FLOAT: |
| 1618 |
for (j=0;j<samps;j++,jchar+=siz) m_set_big_endian_float(jchar,(SNDLIB_SNDFLT * (in_buf[j]))); |
| 1619 |
break; |
| 1620 |
case SNDLIB_32_FLOAT_LITTLE_ENDIAN: |
| 1621 |
for (j=0;j<samps;j++,jchar+=siz) m_set_little_endian_float(jchar,(SNDLIB_SNDFLT * (in_buf[j]))); |
| 1622 |
break; |
| 1623 |
default: return(0); break; |
| 1624 |
} |
| 1625 |
return(samps*siz); |
| 1626 |
} |
| 1627 |
|
| 1628 |
#ifdef CLM |
| 1629 |
void reset_io_c(void) |
| 1630 |
{ |
| 1631 |
io_descriptors_ok = 0; |
| 1632 |
io_files_ready = 0; |
| 1633 |
#if LONG_INT_P |
| 1634 |
long_int_p_table = NULL; |
| 1635 |
long_int_p_table_size = 0; |
| 1636 |
#endif |
| 1637 |
} |
| 1638 |
#endif |
| 1639 |
|
| 1640 |
char *mus_complete_filename(char *tok) |
| 1641 |
{ |
| 1642 |
/* fill out under-specified library pathnames and check for the damned '//' business (SGI file selection box uses this) */ |
| 1643 |
/* what about "../" and "./" ? these work, but perhaps we should handle them explicitly) */ |
| 1644 |
char *file_name_buf; |
| 1645 |
int i,j,len; |
| 1646 |
file_name_buf = (char *)CALLOC(SNDLIB_MAX_FILE_NAME,sizeof(char)); |
| 1647 |
if ((tok) && (*tok)) len = strlen(tok); else len = 0; |
| 1648 |
j = 0; |
| 1649 |
for (i=0;i<len-1;i++) |
| 1650 |
{ |
| 1651 |
if ((tok[i] == '/') && (tok[i+1] == '/')) j=i+1; |
| 1652 |
} |
| 1653 |
if (j > 0) |
| 1654 |
{ |
| 1655 |
for (i=0;j<len;i++,j++) tok[i] = tok[j]; |
| 1656 |
tok[i]='\0'; |
| 1657 |
} |
| 1658 |
#ifdef MACOS |
| 1659 |
strcpy(file_name_buf,tok); |
| 1660 |
#else |
| 1661 |
if (tok[0] != '/') |
| 1662 |
{ |
| 1663 |
file_name_buf[0] = '\0'; |
| 1664 |
if (tok[0] == '~') |
| 1665 |
{ |
| 1666 |
strcpy(file_name_buf,getenv("HOME")); |
| 1667 |
strcat(file_name_buf,++tok); |
| 1668 |
} |
| 1669 |
else |
| 1670 |
{ |
| 1671 |
#if (!defined(NEXT)) || defined(HAVE_GETCWD) |
| 1672 |
getcwd(file_name_buf,SNDLIB_MAX_FILE_NAME); |
| 1673 |
#else |
| 1674 |
getwd(file_name_buf); |
| 1675 |
#endif |
| 1676 |
strcat(file_name_buf,"/"); |
| 1677 |
strcat(file_name_buf,tok); |
| 1678 |
} |
| 1679 |
} |
| 1680 |
else strcpy(file_name_buf,tok); |
| 1681 |
#endif |
| 1682 |
return(file_name_buf); |
| 1683 |
} |
