Gloria Wang | 37fe158 | 2010-03-12 14:53:20 -0800 | [diff] [blame] | 1 | /************************************************************************ |
Gloria Wang | 2da723a | 2010-03-18 15:56:16 -0700 | [diff] [blame] | 2 | * Copyright (C) 2002-2009, Xiph.org Foundation |
| 3 | * Copyright (C) 2010, Robin Watts for Pinknoise Productions Ltd |
Gloria Wang | 37fe158 | 2010-03-12 14:53:20 -0800 | [diff] [blame] | 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
Gloria Wang | 2da723a | 2010-03-18 15:56:16 -0700 | [diff] [blame] | 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
Gloria Wang | 37fe158 | 2010-03-12 14:53:20 -0800 | [diff] [blame] | 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
Gloria Wang | 2da723a | 2010-03-18 15:56:16 -0700 | [diff] [blame] | 16 | * * Neither the names of the Xiph.org Foundation nor Pinknoise |
| 17 | * Productions Ltd nor the names of its contributors may be used to |
| 18 | * endorse or promote products derived from this software without |
| 19 | * specific prior written permission. |
Gloria Wang | 37fe158 | 2010-03-12 14:53:20 -0800 | [diff] [blame] | 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | ************************************************************************ |
Gloria Wang | 7913073 | 2010-02-08 14:41:04 -0800 | [diff] [blame] | 33 | |
| 34 | function: packing variable sized words into an octet stream |
| 35 | |
Gloria Wang | 37fe158 | 2010-03-12 14:53:20 -0800 | [diff] [blame] | 36 | ************************************************************************/ |
Gloria Wang | 7913073 | 2010-02-08 14:41:04 -0800 | [diff] [blame] | 37 | |
| 38 | /* We're 'LSb' endian; if we write a word but read individual bits, |
| 39 | then we'll read the lsb first */ |
| 40 | |
| 41 | #include <string.h> |
| 42 | #include <stdlib.h> |
| 43 | #include "misc.h" |
| 44 | #include "ogg.h" |
| 45 | |
| 46 | #include <stdio.h> |
| 47 | |
| 48 | |
| 49 | #if !defined(ARM_LITTLE_ENDIAN) || defined(_V_BIT_TEST) |
| 50 | static unsigned long mask[]= |
| 51 | {0x00000000,0x00000001,0x00000003,0x00000007,0x0000000f, |
| 52 | 0x0000001f,0x0000003f,0x0000007f,0x000000ff,0x000001ff, |
| 53 | 0x000003ff,0x000007ff,0x00000fff,0x00001fff,0x00003fff, |
| 54 | 0x00007fff,0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff, |
| 55 | 0x000fffff,0x001fffff,0x003fffff,0x007fffff,0x00ffffff, |
| 56 | 0x01ffffff,0x03ffffff,0x07ffffff,0x0fffffff,0x1fffffff, |
| 57 | 0x3fffffff,0x7fffffff,0xffffffff }; |
| 58 | #endif |
| 59 | |
| 60 | #ifdef ARM_LITTLE_ENDIAN |
| 61 | |
| 62 | #ifdef DEBUGGING_BITWISE |
| 63 | extern void oggpack_readinitARM(oggpack_buffer *b,ogg_reference *r); |
| 64 | |
| 65 | void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ |
| 66 | oggpack_readinitARM(b,r); |
| 67 | //fprintf(stderr, "Init: buffer=(%d,%x,%d,%d) %08x%08x\n", |
| 68 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| 69 | // b->ptr[1], b->ptr[0]); |
| 70 | //fflush(stderr); |
| 71 | } |
| 72 | |
| 73 | extern long oggpack_lookARM(oggpack_buffer *b,int bits); |
| 74 | |
| 75 | long oggpack_look(oggpack_buffer *b,int bits){ |
| 76 | long l; |
| 77 | |
| 78 | //fprintf(stderr, "PreLook: buffer=(%x,%x,%x) %08x%08x (%d bits)\n", |
| 79 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, |
| 80 | // b->ptr[1], b->ptr[0], bits); |
| 81 | //fflush(stderr); |
| 82 | l = oggpack_lookARM(b,bits); |
| 83 | //fprintf(stderr, "Look: buffer=(%d,%x,%d,%d) %08x%08x (%d bits) (result=%x)\n", |
| 84 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| 85 | // b->ptr[1], b->ptr[0], bits, l); |
| 86 | //fflush(stderr); |
| 87 | |
| 88 | return l; |
| 89 | } |
| 90 | |
| 91 | extern void oggpack_advARM(oggpack_buffer *b,int bits); |
| 92 | |
| 93 | void oggpack_adv(oggpack_buffer *b,int bits){ |
| 94 | //fprintf(stderr, "Adv before: buffer=(%x,%x,%x) %08x%08x (%d bits)\n", |
| 95 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, |
| 96 | // b->ptr[1], b->ptr[0],bits); |
| 97 | //fflush(stderr); |
| 98 | oggpack_advARM(b,bits); |
| 99 | //fprintf(stderr, "Adv: buffer=(%d,%x,%d,%d) %08x%08x\n", |
| 100 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| 101 | // b->ptr[1], b->ptr[0]); |
| 102 | //fflush(stderr); |
| 103 | } |
| 104 | |
| 105 | extern long oggpack_readARM(oggpack_buffer *b,int bits); |
| 106 | |
| 107 | /* bits <= 32 */ |
| 108 | long oggpack_read(oggpack_buffer *b,int bits){ |
| 109 | long l; |
| 110 | |
| 111 | //fprintf(stderr, "PreRead: buffer=(%d,%x,%d,%d) %08x%08x (%d bits)\n", |
| 112 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| 113 | // b->ptr[1], b->ptr[0], bits); |
| 114 | //fflush(stderr); |
| 115 | l = oggpack_readARM(b,bits); |
| 116 | //fprintf(stderr, "Read: buffer=(%d,%x,%d,%d) %08x%08x (%d bits) (result=%x)\n", |
| 117 | // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| 118 | // b->ptr[1], b->ptr[0], bits, l); |
| 119 | //fflush(stderr); |
| 120 | |
| 121 | return l; |
| 122 | } |
| 123 | #endif |
| 124 | |
| 125 | int oggpack_eop(oggpack_buffer *b){ |
| 126 | int ret; |
| 127 | if(b->bitsLeftInSegment<0)ret= -1; |
| 128 | else ret = 0; |
| 129 | //fprintf(stderr, "EOP %d\n", ret); |
| 130 | //fflush(stderr); |
| 131 | return ret; |
| 132 | } |
| 133 | |
| 134 | long oggpack_bytes(oggpack_buffer *b){ |
| 135 | long ret; |
| 136 | if(b->bitsLeftInSegment<0) ret = b->count+b->head->length; |
| 137 | else ret = b->count + b->head->length - (b->bitsLeftInSegment)/8; |
| 138 | //fprintf(stderr, "count=%d length=%d bitsLeftInSegment=%d\n", |
| 139 | // b->count, b->head->length, b->bitsLeftInSegment); |
| 140 | //fflush(stderr); |
| 141 | return ret; |
| 142 | } |
| 143 | |
| 144 | long oggpack_bits(oggpack_buffer *b){ |
| 145 | long ret; |
| 146 | if(b->bitsLeftInSegment<0) ret=(b->count+b->head->length)*8; |
| 147 | else ret = b->count*8 + b->head->length*8 - b->bitsLeftInSegment; |
| 148 | //fprintf(stderr, "count=%d length=%d bitsLeftInSegment=%d\n", |
| 149 | // b->count, b->head->length, b->bitsLeftInSegment); |
| 150 | //fflush(stderr); |
| 151 | return ret; |
| 152 | } |
| 153 | |
| 154 | #else |
| 155 | |
| 156 | /* spans forward, skipping as many bytes as headend is negative; if |
| 157 | headend is zero, simply finds next byte. If we're up to the end |
| 158 | of the buffer, leaves headend at zero. If we've read past the end, |
| 159 | halt the decode process. */ |
| 160 | |
| 161 | static void _span(oggpack_buffer *b){ |
| 162 | while(b->headend-(b->headbit>>3)<1){ |
| 163 | b->headend-=b->headbit>>3; |
| 164 | b->headbit&=0x7; |
| 165 | |
| 166 | if(b->head && b->head->next){ |
| 167 | b->count+=b->head->length; |
| 168 | b->head=b->head->next; |
| 169 | |
| 170 | if(b->headend+b->head->length>0) |
| 171 | b->headptr=b->head->buffer->data+b->head->begin-b->headend; |
| 172 | |
| 173 | b->headend+=b->head->length; |
| 174 | }else{ |
| 175 | /* we've either met the end of decode, or gone past it. halt |
| 176 | only if we're past */ |
| 177 | if(b->headend*8<b->headbit) |
| 178 | /* read has fallen off the end */ |
| 179 | b->headend=-1; |
| 180 | break; |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ |
| 186 | memset(b,0,sizeof(*b)); |
| 187 | |
| 188 | b->tail=b->head=r; |
| 189 | b->count=0; |
Marco Nelissen | ea4d754 | 2013-10-15 14:13:32 -0700 | [diff] [blame] | 190 | if (b->head && r->length) { |
Gloria Wang | 7913073 | 2010-02-08 14:41:04 -0800 | [diff] [blame] | 191 | b->headptr=b->head->buffer->data+b->head->begin; |
| 192 | b->headend=b->head->length; |
| 193 | } else { |
| 194 | b->headptr=0; |
| 195 | b->headend=0; |
| 196 | } |
| 197 | _span(b); |
| 198 | |
| 199 | //fprintf(stderr, |
| 200 | // "Init: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x\n", |
| 201 | // b->headbit, b->headptr, b->headend, b->count, |
| 202 | // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| 203 | // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0]); |
| 204 | //fflush(stderr); |
| 205 | } |
| 206 | |
| 207 | #define _lookspan() while(!end){\ |
| 208 | head=head->next;\ |
| 209 | if(!head) return -1;\ |
| 210 | ptr=head->buffer->data + head->begin;\ |
| 211 | end=head->length;\ |
| 212 | } |
| 213 | |
| 214 | /* Read in bits without advancing the bitptr; bits <= 32 */ |
| 215 | long oggpack_look(oggpack_buffer *b,int bits){ |
| 216 | unsigned long m=mask[bits]; |
Bruce Beare | d52f6d7 | 2010-06-25 09:07:39 -0700 | [diff] [blame] | 217 | unsigned long ret = 0; |
Gloria Wang | 7913073 | 2010-02-08 14:41:04 -0800 | [diff] [blame] | 218 | int BITS = bits; |
| 219 | |
Marco Nelissen | 84da163 | 2019-06-18 12:11:37 -0700 | [diff] [blame] | 220 | if (!b->headptr || b->headend < 0) return 0; |
Marco Nelissen | ea4d754 | 2013-10-15 14:13:32 -0700 | [diff] [blame] | 221 | |
Gloria Wang | 7913073 | 2010-02-08 14:41:04 -0800 | [diff] [blame] | 222 | bits+=b->headbit; |
| 223 | |
| 224 | if(bits >= b->headend<<3){ |
| 225 | int end=b->headend; |
| 226 | unsigned char *ptr=b->headptr; |
| 227 | ogg_reference *head=b->head; |
| 228 | |
Douglas Leung | b46673f | 2014-04-24 11:48:12 -0700 | [diff] [blame] | 229 | if(end<0)return 0; |
| 230 | if (!head || !end)return 0; |
Gloria Wang | 7913073 | 2010-02-08 14:41:04 -0800 | [diff] [blame] | 231 | |
| 232 | if(bits){ |
| 233 | _lookspan(); |
| 234 | ret=*ptr++>>b->headbit; |
| 235 | if(bits>8){ |
| 236 | --end; |
| 237 | _lookspan(); |
| 238 | ret|=*ptr++<<(8-b->headbit); |
| 239 | if(bits>16){ |
| 240 | --end; |
| 241 | _lookspan(); |
| 242 | ret|=*ptr++<<(16-b->headbit); |
| 243 | if(bits>24){ |
| 244 | --end; |
| 245 | _lookspan(); |
| 246 | ret|=*ptr++<<(24-b->headbit); |
| 247 | if(bits>32 && b->headbit){ |
| 248 | --end; |
| 249 | _lookspan(); |
| 250 | ret|=*ptr<<(32-b->headbit); |
| 251 | } |
| 252 | } |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | }else{ |
| 258 | |
| 259 | /* make this a switch jump-table */ |
| 260 | ret=b->headptr[0]>>b->headbit; |
| 261 | if(bits>8){ |
| 262 | ret|=b->headptr[1]<<(8-b->headbit); |
| 263 | if(bits>16){ |
| 264 | ret|=b->headptr[2]<<(16-b->headbit); |
| 265 | if(bits>24){ |
| 266 | ret|=b->headptr[3]<<(24-b->headbit); |
| 267 | if(bits>32 && b->headbit) |
| 268 | ret|=b->headptr[4]<<(32-b->headbit); |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | ret&=m; |
| 275 | //fprintf(stderr, |
| 276 | // "Look: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits) return=%x\n", |
| 277 | // b->headbit, b->headptr, b->headend, b->count, |
| 278 | // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| 279 | // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| 280 | // BITS, ret); |
| 281 | //fflush(stderr); |
| 282 | return ret; |
| 283 | } |
| 284 | |
| 285 | /* limited to 32 at a time */ |
| 286 | void oggpack_adv(oggpack_buffer *b,int bits){ |
| 287 | int BITS=bits; |
| 288 | bits+=b->headbit; |
| 289 | b->headbit=bits&7; |
| 290 | b->headend-=(bits>>3); |
| 291 | b->headptr+=(bits>>3); |
| 292 | if(b->headend<1)_span(b); |
| 293 | //fprintf(stderr, "Adv: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits)\n", |
| 294 | // b->headbit, b->headptr, b->headend,b->count, |
| 295 | // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| 296 | // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| 297 | // BITS); |
| 298 | //fflush(stderr); |
| 299 | } |
| 300 | |
| 301 | int oggpack_eop(oggpack_buffer *b){ |
| 302 | int ret; |
| 303 | if(b->headend<0)ret= -1; |
| 304 | else ret = 0; |
| 305 | //fprintf(stderr, "EOP %d\n", ret); |
| 306 | //fflush(stderr); |
| 307 | return ret; |
| 308 | } |
| 309 | |
| 310 | long oggpack_bytes(oggpack_buffer *b){ |
| 311 | long ret; |
| 312 | if(b->headend<0) ret = b->count+b->head->length; |
| 313 | ret = b->count + b->head->length-b->headend + (b->headbit+7)/8; |
| 314 | //fprintf(stderr, "Bytes: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bytes)\n", |
| 315 | // b->headbit, b->headptr, b->headend, b->count, |
| 316 | // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| 317 | // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| 318 | // ret); |
| 319 | //fflush(stderr); |
| 320 | return ret; |
| 321 | } |
| 322 | |
| 323 | long oggpack_bits(oggpack_buffer *b){ |
| 324 | long ret; |
| 325 | if(b->headend<0) ret = (b->count+b->head->length)*8; |
| 326 | else ret = (b->count + b->head->length-b->headend)*8 + b->headbit; |
| 327 | //fprintf(stderr, "Bits: buffer=(%x,%x,%x) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits)\n", |
| 328 | // b->headbit, b->headptr, b->headend, |
| 329 | // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| 330 | // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| 331 | // ret); |
| 332 | //fflush(stderr); |
| 333 | return ret; |
| 334 | } |
| 335 | |
| 336 | /* bits <= 32 */ |
| 337 | long oggpack_read(oggpack_buffer *b,int bits){ |
| 338 | long ret=oggpack_look(b,bits); |
| 339 | oggpack_adv(b,bits); |
| 340 | return(ret); |
| 341 | } |
| 342 | |
| 343 | #endif |
| 344 | |
| 345 | /* Self test of the bitwise routines; everything else is based on |
| 346 | them, so they damned well better be solid. */ |
| 347 | |
| 348 | #ifdef _V_BIT_TEST |
| 349 | #include <string.h> |
| 350 | #include <stdlib.h> |
| 351 | #include <stdio.h> |
| 352 | #include "framing.c" |
| 353 | |
| 354 | static int ilog(unsigned long v){ |
| 355 | int ret=0; |
| 356 | while(v){ |
| 357 | ret++; |
| 358 | v>>=1; |
| 359 | } |
| 360 | return(ret); |
| 361 | } |
| 362 | |
| 363 | oggpack_buffer r; |
| 364 | oggpack_buffer o; |
| 365 | ogg_buffer_state *bs; |
| 366 | ogg_reference *or; |
| 367 | #define TESTWORDS 256 |
| 368 | |
| 369 | void report(char *in){ |
| 370 | fprintf(stderr,"%s",in); |
| 371 | exit(1); |
| 372 | } |
| 373 | |
| 374 | int getbyte(ogg_reference *or,int position){ |
| 375 | while(or && position>=or->length){ |
| 376 | position-=or->length; |
| 377 | or=or->next; |
| 378 | if(or==NULL){ |
| 379 | fprintf(stderr,"\n\tERROR: getbyte ran off end of buffer.\n"); |
| 380 | exit(1); |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | if((position+or->begin)&1) |
| 385 | return (or->buffer->data[(position+or->begin)>>1])&0xff; |
| 386 | else |
| 387 | return (or->buffer->data[(position+or->begin)>>1]>>8)&0xff; |
| 388 | } |
| 389 | |
| 390 | void cliptest(unsigned long *b,int vals,int bits,int *comp,int compsize){ |
| 391 | long i,bitcount=0; |
| 392 | ogg_reference *or=ogg_buffer_alloc(bs,64); |
| 393 | for(i=0;i<compsize;i++) |
| 394 | or->buffer->data[i]= comp[i]; |
| 395 | or->length=i; |
| 396 | |
| 397 | oggpack_readinit(&r,or); |
| 398 | for(i=0;i<vals;i++){ |
| 399 | unsigned long test; |
| 400 | int tbit=bits?bits:ilog(b[i]); |
| 401 | if((test=oggpack_look(&r,tbit))==0xffffffff) |
| 402 | report("out of data!\n"); |
| 403 | if(test!=(b[i]&mask[tbit])){ |
| 404 | fprintf(stderr,"%ld) %lx %lx\n",i,(b[i]&mask[tbit]),test); |
| 405 | report("looked at incorrect value!\n"); |
| 406 | } |
| 407 | if((test=oggpack_read(&r,tbit))==0xffffffff){ |
| 408 | report("premature end of data when reading!\n"); |
| 409 | } |
| 410 | if(test!=(b[i]&mask[tbit])){ |
| 411 | fprintf(stderr,"%ld) %lx %lx\n",i,(b[i]&mask[tbit]),test); |
| 412 | report("read incorrect value!\n"); |
| 413 | } |
| 414 | bitcount+=tbit; |
| 415 | |
| 416 | if(bitcount!=oggpack_bits(&r)) |
| 417 | report("wrong number of bits while reading!\n"); |
| 418 | if((bitcount+7)/8!=oggpack_bytes(&r)) |
| 419 | report("wrong number of bytes while reading!\n"); |
| 420 | |
| 421 | } |
| 422 | if(oggpack_bytes(&r)!=(bitcount+7)/8){ |
| 423 | fprintf(stderr, "%d vs %d\n", oggpack_bytes(&r), (bitcount+7)/8); |
| 424 | report("leftover bytes after read!\n"); |
| 425 | } |
| 426 | ogg_buffer_release(or); |
| 427 | } |
| 428 | |
| 429 | void _end_verify(int count){ |
| 430 | int i; |
| 431 | |
| 432 | /* are the proper number of bits left over? */ |
| 433 | int leftover=count*8-oggpack_bits(&o); |
| 434 | if(leftover>7) |
| 435 | report("\nERROR: too many bits reported left over.\n"); |
| 436 | |
| 437 | /* does reading to exactly byte alignment *not* trip EOF? */ |
| 438 | if(oggpack_read(&o,leftover)==-1) |
| 439 | report("\nERROR: read to but not past exact end tripped EOF.\n"); |
| 440 | if(oggpack_bits(&o)!=count*8) |
| 441 | report("\nERROR: read to but not past exact end reported bad bitcount.\n"); |
| 442 | |
| 443 | /* does EOF trip properly after a single additional bit? */ |
| 444 | if(oggpack_read(&o,1)!=-1) |
| 445 | report("\nERROR: read past exact end did not trip EOF.\n"); |
| 446 | if(oggpack_bits(&o)!=count*8) |
| 447 | report("\nERROR: read past exact end reported bad bitcount.\n"); |
| 448 | |
| 449 | /* does EOF stay set over additional bit reads? */ |
| 450 | for(i=0;i<=32;i++){ |
| 451 | if(oggpack_read(&o,i)!=-1) |
| 452 | report("\nERROR: EOF did not stay set on stream.\n"); |
| 453 | if(oggpack_bits(&o)!=count*8) |
| 454 | report("\nERROR: read past exact end reported bad bitcount.\n"); |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | void _end_verify2(int count){ |
| 459 | int i; |
| 460 | |
| 461 | /* are the proper number of bits left over? */ |
| 462 | int leftover=count*8-oggpack_bits(&o); |
| 463 | if(leftover>7) |
| 464 | report("\nERROR: too many bits reported left over.\n"); |
| 465 | |
| 466 | /* does reading to exactly byte alignment *not* trip EOF? */ |
| 467 | oggpack_adv(&o,leftover); |
| 468 | #ifdef ARM_LITTLE_ENDIAN |
| 469 | if(o.bitsLeftInSegment!=0) |
| 470 | #else |
| 471 | if(o.headend!=0) |
| 472 | #endif |
| 473 | report("\nERROR: read to but not past exact end tripped EOF.\n"); |
| 474 | if(oggpack_bits(&o)!=count*8) |
| 475 | report("\nERROR: read to but not past exact end reported bad bitcount.\n"); |
| 476 | |
| 477 | /* does EOF trip properly after a single additional bit? */ |
| 478 | oggpack_adv(&o,1); |
| 479 | #ifdef ARM_LITTLE_ENDIAN |
| 480 | if(o.bitsLeftInSegment>=0) |
| 481 | #else |
| 482 | if(o.headend>=0) |
| 483 | #endif |
| 484 | report("\nERROR: read past exact end did not trip EOF.\n"); |
| 485 | if(oggpack_bits(&o)!=count*8) |
| 486 | report("\nERROR: read past exact end reported bad bitcount.\n"); |
| 487 | |
| 488 | /* does EOF stay set over additional bit reads? */ |
| 489 | for(i=0;i<=32;i++){ |
| 490 | oggpack_adv(&o,i); |
| 491 | #ifdef ARM_LITTLE_ENDIAN |
| 492 | if(o.bitsLeftInSegment>=0) |
| 493 | #else |
| 494 | if(o.headend>=0) |
| 495 | #endif |
| 496 | report("\nERROR: EOF did not stay set on stream.\n"); |
| 497 | if(oggpack_bits(&o)!=count*8) |
| 498 | report("\nERROR: read past exact end reported bad bitcount.\n"); |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | long ogg_buffer_length(ogg_reference *or){ |
| 503 | int count=0; |
| 504 | while(or){ |
| 505 | count+=or->length; |
| 506 | or=or->next; |
| 507 | } |
| 508 | return count; |
| 509 | } |
| 510 | |
| 511 | ogg_reference *ogg_buffer_extend(ogg_reference *or,long bytes){ |
| 512 | if(or){ |
| 513 | while(or->next){ |
| 514 | or=or->next; |
| 515 | } |
| 516 | or->next=ogg_buffer_alloc(or->buffer->ptr.owner,bytes); |
| 517 | return(or->next); |
| 518 | } |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | void ogg_buffer_posttruncate(ogg_reference *or,long pos){ |
| 523 | /* walk to the point where we want to begin truncate */ |
| 524 | while(or && pos>or->length){ |
| 525 | pos-=or->length; |
| 526 | or=or->next; |
| 527 | } |
| 528 | if(or){ |
| 529 | ogg_buffer_release(or->next); |
| 530 | or->next=0; |
| 531 | or->length=pos; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | int main(void){ |
| 536 | long i; |
| 537 | static unsigned long testbuffer1[]= |
| 538 | {18,12,103948,4325,543,76,432,52,3,65,4,56,32,42,34,21,1,23,32,546,456,7, |
| 539 | 567,56,8,8,55,3,52,342,341,4,265,7,67,86,2199,21,7,1,5,1,4}; |
| 540 | int test1size=43; |
| 541 | |
| 542 | static unsigned long testbuffer2[]= |
| 543 | {216531625L,1237861823,56732452,131,3212421,12325343,34547562,12313212, |
| 544 | 1233432,534,5,346435231,14436467,7869299,76326614,167548585, |
| 545 | 85525151,0,12321,1,349528352}; |
| 546 | int test2size=21; |
| 547 | |
| 548 | static unsigned long testbuffer3[]= |
| 549 | {1,0,14,0,1,0,12,0,1,0,0,0,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,1,1,1,1,0,0,1, |
| 550 | 0,1,30,1,1,1,0,0,1,0,0,0,12,0,11,0,1,0,0,1}; |
| 551 | int test3size=56; |
| 552 | |
| 553 | static unsigned long large[]= |
| 554 | {2136531625L,2137861823,56732452,131,3212421,12325343,34547562,12313212, |
| 555 | 1233432,534,5,2146435231,14436467,7869299,76326614,167548585, |
| 556 | 85525151,0,12321,1,2146528352}; |
| 557 | |
| 558 | int onesize=33; |
| 559 | static int one[33]={146,25,44,151,195,15,153,176,233,131,196,65,85,172,47,40, |
| 560 | 34,242,223,136,35,222,211,86,171,50,225,135,214,75,172, |
| 561 | 223,4}; |
| 562 | |
| 563 | int twosize=6; |
| 564 | static int two[6]={61,255,255,251,231,29}; |
| 565 | |
| 566 | int threesize=54; |
| 567 | static int three[54]={169,2,232,252,91,132,156,36,89,13,123,176,144,32,254, |
| 568 | 142,224,85,59,121,144,79,124,23,67,90,90,216,79,23,83, |
| 569 | 58,135,196,61,55,129,183,54,101,100,170,37,127,126,10, |
| 570 | 100,52,4,14,18,86,77,1}; |
| 571 | |
| 572 | int foursize=38; |
| 573 | static int four[38]={18,6,163,252,97,194,104,131,32,1,7,82,137,42,129,11,72, |
| 574 | 132,60,220,112,8,196,109,64,179,86,9,137,195,208,122,169, |
| 575 | 28,2,133,0,1}; |
| 576 | |
| 577 | int fivesize=45; |
| 578 | static int five[45]={169,2,126,139,144,172,30,4,80,72,240,59,130,218,73,62, |
| 579 | 241,24,210,44,4,20,0,248,116,49,135,100,110,130,181,169, |
| 580 | 84,75,159,2,1,0,132,192,8,0,0,18,22}; |
| 581 | |
| 582 | int sixsize=7; |
| 583 | static int six[7]={17,177,170,242,169,19,148}; |
| 584 | |
| 585 | /* Test read/write together */ |
| 586 | /* Later we test against pregenerated bitstreams */ |
| 587 | bs=ogg_buffer_create(); |
| 588 | |
| 589 | fprintf(stderr,"\nSmall preclipped packing (LSb): "); |
| 590 | cliptest(testbuffer1,test1size,0,one,onesize); |
| 591 | fprintf(stderr,"ok."); |
| 592 | |
| 593 | fprintf(stderr,"\nNull bit call (LSb): "); |
| 594 | cliptest(testbuffer3,test3size,0,two,twosize); |
| 595 | fprintf(stderr,"ok."); |
| 596 | |
| 597 | fprintf(stderr,"\nLarge preclipped packing (LSb): "); |
| 598 | cliptest(testbuffer2,test2size,0,three,threesize); |
| 599 | fprintf(stderr,"ok."); |
| 600 | |
| 601 | fprintf(stderr,"\n32 bit preclipped packing (LSb): "); |
| 602 | |
| 603 | or=ogg_buffer_alloc(bs,128); |
| 604 | for(i=0;i<test2size;i++){ |
| 605 | or->buffer->data[i*4] = large[i]&0xff; |
| 606 | or->buffer->data[i*4+1] = (large[i]>>8)&0xff; |
| 607 | or->buffer->data[i*4+2] = (large[i]>>16)&0xff; |
| 608 | or->buffer->data[i*4+3] = (large[i]>>24)&0xff; |
| 609 | } |
| 610 | or->length=test2size*4; |
| 611 | oggpack_readinit(&r,or); |
| 612 | for(i=0;i<test2size;i++){ |
| 613 | unsigned long test; |
| 614 | if((test=oggpack_look(&r,32))==0xffffffffUL)report("out of data. failed!"); |
| 615 | if(test!=large[i]){ |
| 616 | fprintf(stderr,"%ld != %ld (%lx!=%lx):",test,large[i], |
| 617 | test,large[i]); |
| 618 | report("read incorrect value!\n"); |
| 619 | } |
| 620 | oggpack_adv(&r,32); |
| 621 | } |
| 622 | ogg_buffer_release(or); |
| 623 | if(oggpack_bytes(&r)!=test2size*4){ |
| 624 | fprintf(stderr, "%d vs %d\n", oggpack_bytes(&r), test2size*4); |
| 625 | report("leftover bytes after read!\n"); |
| 626 | } |
| 627 | fprintf(stderr,"ok."); |
| 628 | |
| 629 | fprintf(stderr,"\nSmall unclipped packing (LSb): "); |
| 630 | cliptest(testbuffer1,test1size,7,four,foursize); |
| 631 | fprintf(stderr,"ok."); |
| 632 | |
| 633 | fprintf(stderr,"\nLarge unclipped packing (LSb): "); |
| 634 | cliptest(testbuffer2,test2size,17,five,fivesize); |
| 635 | fprintf(stderr,"ok."); |
| 636 | |
| 637 | fprintf(stderr,"\nSingle bit unclipped packing (LSb): "); |
| 638 | cliptest(testbuffer3,test3size,1,six,sixsize); |
| 639 | fprintf(stderr,"ok."); |
| 640 | |
| 641 | fprintf(stderr,"\nTesting read past end (LSb): "); |
| 642 | { |
| 643 | unsigned char dda[]={0,0,0,0}; |
| 644 | ogg_buffer lob={dda,8,0,{0}}; |
| 645 | ogg_reference lor={&lob,0,8,0}; |
| 646 | |
| 647 | oggpack_readinit(&r,&lor); |
| 648 | for(i=0;i<64;i++){ |
| 649 | if(oggpack_read(&r,1)<0){ |
| 650 | fprintf(stderr,"failed; got -1 prematurely.\n"); |
| 651 | exit(1); |
| 652 | } |
| 653 | } |
| 654 | if(oggpack_look(&r,1)!=-1 || |
| 655 | oggpack_read(&r,1)!=-1){ |
| 656 | fprintf(stderr,"failed; read past end without -1.\n"); |
| 657 | exit(1); |
| 658 | } |
| 659 | } |
| 660 | { |
| 661 | unsigned char dda[]={0,0,0,0}; |
| 662 | ogg_buffer lob={dda,8,0,{0}}; |
| 663 | ogg_reference lor={&lob,0,8,0}; |
| 664 | unsigned long test; |
| 665 | |
| 666 | oggpack_readinit(&r,&lor); |
| 667 | if((test=oggpack_read(&r,30))==0xffffffffUL || |
| 668 | (test=oggpack_read(&r,16))==0xffffffffUL){ |
| 669 | fprintf(stderr,"failed 2; got -1 prematurely.\n"); |
| 670 | exit(1); |
| 671 | } |
| 672 | |
| 673 | if((test=oggpack_look(&r,18))==0xffffffffUL){ |
| 674 | fprintf(stderr,"failed 3; got -1 prematurely.\n"); |
| 675 | exit(1); |
| 676 | } |
| 677 | if((test=oggpack_look(&r,19))!=0xffffffffUL){ |
| 678 | fprintf(stderr,"failed; read past end without -1.\n"); |
| 679 | exit(1); |
| 680 | } |
| 681 | if((test=oggpack_look(&r,32))!=0xffffffffUL){ |
| 682 | fprintf(stderr,"failed; read past end without -1.\n"); |
| 683 | exit(1); |
| 684 | } |
| 685 | } |
| 686 | fprintf(stderr,"ok.\n"); |
| 687 | |
| 688 | /* now the scary shit: randomized testing */ |
| 689 | |
| 690 | for(i=0;i<10000;i++){ |
| 691 | long j,count=0,count2=0,bitcount=0; |
| 692 | unsigned long values[TESTWORDS]; |
| 693 | int len[TESTWORDS]; |
| 694 | unsigned char flat[4*TESTWORDS]; /* max possible needed size */ |
| 695 | |
| 696 | memset(flat,0,sizeof(flat)); |
| 697 | fprintf(stderr,"\rRandomized testing (LSb)... (%ld) ",10000-i); |
| 698 | |
| 699 | /* generate a list of words and lengths */ |
| 700 | /* write the required number of bits out to packbuffer */ |
| 701 | { |
| 702 | long word=0; |
| 703 | long bit=0; |
| 704 | int k; |
| 705 | |
| 706 | for(j=0;j<TESTWORDS;j++){ |
| 707 | values[j]=rand(); |
| 708 | len[j]=(rand()%33); |
| 709 | |
| 710 | for(k=0;k<len[j];k++){ |
| 711 | flat[word] |= ((values[j]>>k)&0x1)<<bit; |
| 712 | bit++; |
| 713 | bitcount++; |
| 714 | if(bit>7){ |
| 715 | bit=0; |
| 716 | word++; |
| 717 | } |
| 718 | } |
| 719 | } |
| 720 | } |
| 721 | count2=(bitcount+7)>>3; |
| 722 | |
| 723 | /* construct random-length buffer chain from flat vector; random |
| 724 | byte starting offset within the length of the vector */ |
| 725 | { |
| 726 | ogg_reference *or=NULL,*orl=NULL; |
| 727 | long pos=0; |
| 728 | |
| 729 | /* build buffer chain */ |
| 730 | while(count2){ |
| 731 | int ilen=(rand()%32),k; |
| 732 | int ibegin=(rand()%32); |
| 733 | |
| 734 | |
| 735 | if(ilen>count2)ilen=count2; |
| 736 | |
| 737 | if(or) |
| 738 | orl=ogg_buffer_extend(orl,64); |
| 739 | else |
| 740 | or=orl=ogg_buffer_alloc(bs,64); |
| 741 | |
| 742 | orl->length=ilen; |
| 743 | orl->begin=ibegin; |
| 744 | |
| 745 | for(k=0;k<ilen;k++) |
| 746 | orl->buffer->data[ibegin++]= flat[pos++]; |
| 747 | |
| 748 | count2-=ilen; |
| 749 | } |
| 750 | |
| 751 | if(ogg_buffer_length(or)!=(bitcount+7)/8){ |
| 752 | fprintf(stderr,"\nERROR: buffer length incorrect after build.\n"); |
| 753 | exit(1); |
| 754 | } |
| 755 | |
| 756 | |
| 757 | { |
| 758 | int begin=0; //=(rand()%TESTWORDS); |
| 759 | int ilen=(rand()%(TESTWORDS-begin)); |
| 760 | int bitoffset,bitcount=0; |
| 761 | unsigned long temp; |
| 762 | |
| 763 | for(j=0;j<begin;j++) |
| 764 | bitcount+=len[j]; |
| 765 | or=ogg_buffer_pretruncate(or,bitcount/8); |
| 766 | bitoffset=bitcount%=8; |
| 767 | for(;j<begin+ilen;j++) |
| 768 | bitcount+=len[j]; |
| 769 | ogg_buffer_posttruncate(or,((bitcount+7)/8)); |
| 770 | |
| 771 | if((count=ogg_buffer_length(or))!=(bitcount+7)/8){ |
| 772 | fprintf(stderr,"\nERROR: buffer length incorrect after truncate.\n"); |
| 773 | exit(1); |
| 774 | } |
| 775 | |
| 776 | oggpack_readinit(&o,or); |
| 777 | |
| 778 | /* verify bit count */ |
| 779 | if(oggpack_bits(&o)!=0){ |
| 780 | fprintf(stderr,"\nERROR: Read bitcounter not zero!\n"); |
| 781 | exit(1); |
| 782 | } |
| 783 | if(oggpack_bytes(&o)!=0){ |
| 784 | fprintf(stderr,"\nERROR: Read bytecounter not zero!\n"); |
| 785 | exit(1); |
| 786 | } |
| 787 | |
| 788 | bitcount=bitoffset; |
| 789 | oggpack_read(&o,bitoffset); |
| 790 | |
| 791 | /* read and compare to original list */ |
| 792 | for(j=begin;j<begin+ilen;j++){ |
| 793 | temp=oggpack_read(&o,len[j]); |
| 794 | if(temp==0xffffffffUL){ |
| 795 | fprintf(stderr,"\nERROR: End of stream too soon! word: %ld,%d\n", |
| 796 | j-begin,ilen); |
| 797 | exit(1); |
| 798 | } |
| 799 | if(temp!=(values[j]&mask[len[j]])){ |
| 800 | fprintf(stderr,"\nERROR: Incorrect read %lx != %lx, word %ld, len %d\n" |
| 801 | , |
| 802 | values[j]&mask[len[j]],temp,j-begin,len[j]); |
| 803 | exit(1); |
| 804 | } |
| 805 | bitcount+=len[j]; |
| 806 | if(oggpack_bits(&o)!=bitcount){ |
| 807 | fprintf(stderr,"\nERROR: Read bitcounter %d != %ld!\n", |
| 808 | bitcount,oggpack_bits(&o)); |
| 809 | exit(1); |
| 810 | } |
| 811 | if(oggpack_bytes(&o)!=(bitcount+7)/8){ |
| 812 | fprintf(stderr,"\nERROR: Read bytecounter %d != %ld!\n", |
| 813 | (bitcount+7)/8,oggpack_bytes(&o)); |
| 814 | exit(1); |
| 815 | } |
| 816 | |
| 817 | } |
| 818 | _end_verify(count); |
| 819 | |
| 820 | /* look/adv version */ |
| 821 | oggpack_readinit(&o,or); |
| 822 | bitcount=bitoffset; |
| 823 | oggpack_adv(&o,bitoffset); |
| 824 | |
| 825 | /* read and compare to original list */ |
| 826 | for(j=begin;j<begin+ilen;j++){ |
| 827 | temp=oggpack_look(&o,len[j]); |
| 828 | |
| 829 | if(temp==0xffffffffUL){ |
| 830 | fprintf(stderr,"\nERROR: End of stream too soon! word: %ld\n", |
| 831 | j-begin); |
| 832 | exit(1); |
| 833 | } |
| 834 | if(temp!=(values[j]&mask[len[j]])){ |
| 835 | fprintf(stderr,"\nERROR: Incorrect look %lx != %lx, word %ld, len %d\n" |
| 836 | , |
| 837 | values[j]&mask[len[j]],temp,j-begin,len[j]); |
| 838 | exit(1); |
| 839 | } |
| 840 | oggpack_adv(&o,len[j]); |
| 841 | bitcount+=len[j]; |
| 842 | if(oggpack_bits(&o)!=bitcount){ |
| 843 | fprintf(stderr,"\nERROR: Look/Adv bitcounter %d != %ld!\n", |
| 844 | bitcount,oggpack_bits(&o)); |
| 845 | exit(1); |
| 846 | } |
| 847 | if(oggpack_bytes(&o)!=(bitcount+7)/8){ |
| 848 | fprintf(stderr,"\nERROR: Look/Adv bytecounter %d != %ld!\n", |
| 849 | (bitcount+7)/8,oggpack_bytes(&o)); |
| 850 | exit(1); |
| 851 | } |
| 852 | |
| 853 | } |
| 854 | _end_verify2(count); |
| 855 | |
| 856 | } |
| 857 | ogg_buffer_release(or); |
| 858 | } |
| 859 | } |
| 860 | fprintf(stderr,"\rRandomized testing (LSb)... ok. \n"); |
| 861 | |
| 862 | return(0); |
| 863 | } |
| 864 | |
| 865 | #ifdef _WIN32_WCE |
| 866 | int WinMain(void){ |
| 867 | return main(); |
| 868 | } |
| 869 | #endif |
| 870 | |
| 871 | #endif |