| /************************************************************************ |
| * Copyright (C) 2002-2009, Xiph.org Foundation |
| * Copyright (C) 2010, Robin Watts for Pinknoise Productions Ltd |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the names of the Xiph.org Foundation nor Pinknoise |
| * Productions Ltd nor the names of its contributors may be used to |
| * endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| ************************************************************************ |
| |
| function: packing variable sized words into an octet stream |
| |
| ************************************************************************/ |
| |
| /* We're 'LSb' endian; if we write a word but read individual bits, |
| then we'll read the lsb first */ |
| |
| #include <string.h> |
| #include <stdlib.h> |
| #include "misc.h" |
| #include "ogg.h" |
| |
| #include <stdio.h> |
| |
| |
| #if !defined(ARM_LITTLE_ENDIAN) || defined(_V_BIT_TEST) |
| static unsigned long mask[]= |
| {0x00000000,0x00000001,0x00000003,0x00000007,0x0000000f, |
| 0x0000001f,0x0000003f,0x0000007f,0x000000ff,0x000001ff, |
| 0x000003ff,0x000007ff,0x00000fff,0x00001fff,0x00003fff, |
| 0x00007fff,0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff, |
| 0x000fffff,0x001fffff,0x003fffff,0x007fffff,0x00ffffff, |
| 0x01ffffff,0x03ffffff,0x07ffffff,0x0fffffff,0x1fffffff, |
| 0x3fffffff,0x7fffffff,0xffffffff }; |
| #endif |
| |
| #ifdef ARM_LITTLE_ENDIAN |
| |
| #ifdef DEBUGGING_BITWISE |
| extern void oggpack_readinitARM(oggpack_buffer *b,ogg_reference *r); |
| |
| void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ |
| oggpack_readinitARM(b,r); |
| //fprintf(stderr, "Init: buffer=(%d,%x,%d,%d) %08x%08x\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| // b->ptr[1], b->ptr[0]); |
| //fflush(stderr); |
| } |
| |
| extern long oggpack_lookARM(oggpack_buffer *b,int bits); |
| |
| long oggpack_look(oggpack_buffer *b,int bits){ |
| long l; |
| |
| //fprintf(stderr, "PreLook: buffer=(%x,%x,%x) %08x%08x (%d bits)\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, |
| // b->ptr[1], b->ptr[0], bits); |
| //fflush(stderr); |
| l = oggpack_lookARM(b,bits); |
| //fprintf(stderr, "Look: buffer=(%d,%x,%d,%d) %08x%08x (%d bits) (result=%x)\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| // b->ptr[1], b->ptr[0], bits, l); |
| //fflush(stderr); |
| |
| return l; |
| } |
| |
| extern void oggpack_advARM(oggpack_buffer *b,int bits); |
| |
| void oggpack_adv(oggpack_buffer *b,int bits){ |
| //fprintf(stderr, "Adv before: buffer=(%x,%x,%x) %08x%08x (%d bits)\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, |
| // b->ptr[1], b->ptr[0],bits); |
| //fflush(stderr); |
| oggpack_advARM(b,bits); |
| //fprintf(stderr, "Adv: buffer=(%d,%x,%d,%d) %08x%08x\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| // b->ptr[1], b->ptr[0]); |
| //fflush(stderr); |
| } |
| |
| extern long oggpack_readARM(oggpack_buffer *b,int bits); |
| |
| /* bits <= 32 */ |
| long oggpack_read(oggpack_buffer *b,int bits){ |
| long l; |
| |
| //fprintf(stderr, "PreRead: buffer=(%d,%x,%d,%d) %08x%08x (%d bits)\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| // b->ptr[1], b->ptr[0], bits); |
| //fflush(stderr); |
| l = oggpack_readARM(b,bits); |
| //fprintf(stderr, "Read: buffer=(%d,%x,%d,%d) %08x%08x (%d bits) (result=%x)\n", |
| // b->bitsLeftInSegment, b->ptr, b->bitsLeftInWord, b->count, |
| // b->ptr[1], b->ptr[0], bits, l); |
| //fflush(stderr); |
| |
| return l; |
| } |
| #endif |
| |
| int oggpack_eop(oggpack_buffer *b){ |
| int ret; |
| if(b->bitsLeftInSegment<0)ret= -1; |
| else ret = 0; |
| //fprintf(stderr, "EOP %d\n", ret); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| long oggpack_bytes(oggpack_buffer *b){ |
| long ret; |
| if(b->bitsLeftInSegment<0) ret = b->count+b->head->length; |
| else ret = b->count + b->head->length - (b->bitsLeftInSegment)/8; |
| //fprintf(stderr, "count=%d length=%d bitsLeftInSegment=%d\n", |
| // b->count, b->head->length, b->bitsLeftInSegment); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| long oggpack_bits(oggpack_buffer *b){ |
| long ret; |
| if(b->bitsLeftInSegment<0) ret=(b->count+b->head->length)*8; |
| else ret = b->count*8 + b->head->length*8 - b->bitsLeftInSegment; |
| //fprintf(stderr, "count=%d length=%d bitsLeftInSegment=%d\n", |
| // b->count, b->head->length, b->bitsLeftInSegment); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| #else |
| |
| /* spans forward, skipping as many bytes as headend is negative; if |
| headend is zero, simply finds next byte. If we're up to the end |
| of the buffer, leaves headend at zero. If we've read past the end, |
| halt the decode process. */ |
| |
| static void _span(oggpack_buffer *b){ |
| while(b->headend-(b->headbit>>3)<1){ |
| b->headend-=b->headbit>>3; |
| b->headbit&=0x7; |
| |
| if(b->head && b->head->next){ |
| b->count+=b->head->length; |
| b->head=b->head->next; |
| |
| if(b->headend+b->head->length>0) |
| b->headptr=b->head->buffer->data+b->head->begin-b->headend; |
| |
| b->headend+=b->head->length; |
| }else{ |
| /* we've either met the end of decode, or gone past it. halt |
| only if we're past */ |
| if(b->headend*8<b->headbit) |
| /* read has fallen off the end */ |
| b->headend=-1; |
| break; |
| } |
| } |
| } |
| |
| void oggpack_readinit(oggpack_buffer *b,ogg_reference *r){ |
| memset(b,0,sizeof(*b)); |
| |
| b->tail=b->head=r; |
| b->count=0; |
| if (b->head && r->length) { |
| b->headptr=b->head->buffer->data+b->head->begin; |
| b->headend=b->head->length; |
| } else { |
| b->headptr=0; |
| b->headend=0; |
| } |
| _span(b); |
| |
| //fprintf(stderr, |
| // "Init: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x\n", |
| // b->headbit, b->headptr, b->headend, b->count, |
| // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0]); |
| //fflush(stderr); |
| } |
| |
| #define _lookspan() while(!end){\ |
| head=head->next;\ |
| if(!head) return -1;\ |
| ptr=head->buffer->data + head->begin;\ |
| end=head->length;\ |
| } |
| |
| /* Read in bits without advancing the bitptr; bits <= 32 */ |
| long oggpack_look(oggpack_buffer *b,int bits){ |
| unsigned long m=mask[bits]; |
| unsigned long ret = 0; |
| int BITS = bits; |
| |
| if (!b->headptr) return 0; |
| |
| bits+=b->headbit; |
| |
| if(bits >= b->headend<<3){ |
| int end=b->headend; |
| unsigned char *ptr=b->headptr; |
| ogg_reference *head=b->head; |
| |
| if(end<0)return 0; |
| if (!head || !end)return 0; |
| |
| if(bits){ |
| _lookspan(); |
| ret=*ptr++>>b->headbit; |
| if(bits>8){ |
| --end; |
| _lookspan(); |
| ret|=*ptr++<<(8-b->headbit); |
| if(bits>16){ |
| --end; |
| _lookspan(); |
| ret|=*ptr++<<(16-b->headbit); |
| if(bits>24){ |
| --end; |
| _lookspan(); |
| ret|=*ptr++<<(24-b->headbit); |
| if(bits>32 && b->headbit){ |
| --end; |
| _lookspan(); |
| ret|=*ptr<<(32-b->headbit); |
| } |
| } |
| } |
| } |
| } |
| |
| }else{ |
| |
| /* make this a switch jump-table */ |
| ret=b->headptr[0]>>b->headbit; |
| if(bits>8){ |
| ret|=b->headptr[1]<<(8-b->headbit); |
| if(bits>16){ |
| ret|=b->headptr[2]<<(16-b->headbit); |
| if(bits>24){ |
| ret|=b->headptr[3]<<(24-b->headbit); |
| if(bits>32 && b->headbit) |
| ret|=b->headptr[4]<<(32-b->headbit); |
| } |
| } |
| } |
| } |
| |
| ret&=m; |
| //fprintf(stderr, |
| // "Look: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits) return=%x\n", |
| // b->headbit, b->headptr, b->headend, b->count, |
| // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| // BITS, ret); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| /* limited to 32 at a time */ |
| void oggpack_adv(oggpack_buffer *b,int bits){ |
| int BITS=bits; |
| bits+=b->headbit; |
| b->headbit=bits&7; |
| b->headend-=(bits>>3); |
| b->headptr+=(bits>>3); |
| if(b->headend<1)_span(b); |
| //fprintf(stderr, "Adv: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits)\n", |
| // b->headbit, b->headptr, b->headend,b->count, |
| // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| // BITS); |
| //fflush(stderr); |
| } |
| |
| int oggpack_eop(oggpack_buffer *b){ |
| int ret; |
| if(b->headend<0)ret= -1; |
| else ret = 0; |
| //fprintf(stderr, "EOP %d\n", ret); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| long oggpack_bytes(oggpack_buffer *b){ |
| long ret; |
| if(b->headend<0) ret = b->count+b->head->length; |
| ret = b->count + b->head->length-b->headend + (b->headbit+7)/8; |
| //fprintf(stderr, "Bytes: buffer=(%d,%x,%d,%d) %02x%02x%02x%02x%02x%02x%02x%02x (%d bytes)\n", |
| // b->headbit, b->headptr, b->headend, b->count, |
| // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| // ret); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| long oggpack_bits(oggpack_buffer *b){ |
| long ret; |
| if(b->headend<0) ret = (b->count+b->head->length)*8; |
| else ret = (b->count + b->head->length-b->headend)*8 + b->headbit; |
| //fprintf(stderr, "Bits: buffer=(%x,%x,%x) %02x%02x%02x%02x%02x%02x%02x%02x (%d bits)\n", |
| // b->headbit, b->headptr, b->headend, |
| // b->headptr[7], b->headptr[6], b->headptr[5], b->headptr[4], |
| // b->headptr[3], b->headptr[2], b->headptr[1], b->headptr[0], |
| // ret); |
| //fflush(stderr); |
| return ret; |
| } |
| |
| /* bits <= 32 */ |
| long oggpack_read(oggpack_buffer *b,int bits){ |
| long ret=oggpack_look(b,bits); |
| oggpack_adv(b,bits); |
| return(ret); |
| } |
| |
| #endif |
| |
| /* Self test of the bitwise routines; everything else is based on |
| them, so they damned well better be solid. */ |
| |
| #ifdef _V_BIT_TEST |
| #include <string.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include "framing.c" |
| |
| static int ilog(unsigned long v){ |
| int ret=0; |
| while(v){ |
| ret++; |
| v>>=1; |
| } |
| return(ret); |
| } |
| |
| oggpack_buffer r; |
| oggpack_buffer o; |
| ogg_buffer_state *bs; |
| ogg_reference *or; |
| #define TESTWORDS 256 |
| |
| void report(char *in){ |
| fprintf(stderr,"%s",in); |
| exit(1); |
| } |
| |
| int getbyte(ogg_reference *or,int position){ |
| while(or && position>=or->length){ |
| position-=or->length; |
| or=or->next; |
| if(or==NULL){ |
| fprintf(stderr,"\n\tERROR: getbyte ran off end of buffer.\n"); |
| exit(1); |
| } |
| } |
| |
| if((position+or->begin)&1) |
| return (or->buffer->data[(position+or->begin)>>1])&0xff; |
| else |
| return (or->buffer->data[(position+or->begin)>>1]>>8)&0xff; |
| } |
| |
| void cliptest(unsigned long *b,int vals,int bits,int *comp,int compsize){ |
| long i,bitcount=0; |
| ogg_reference *or=ogg_buffer_alloc(bs,64); |
| for(i=0;i<compsize;i++) |
| or->buffer->data[i]= comp[i]; |
| or->length=i; |
| |
| oggpack_readinit(&r,or); |
| for(i=0;i<vals;i++){ |
| unsigned long test; |
| int tbit=bits?bits:ilog(b[i]); |
| if((test=oggpack_look(&r,tbit))==0xffffffff) |
| report("out of data!\n"); |
| if(test!=(b[i]&mask[tbit])){ |
| fprintf(stderr,"%ld) %lx %lx\n",i,(b[i]&mask[tbit]),test); |
| report("looked at incorrect value!\n"); |
| } |
| if((test=oggpack_read(&r,tbit))==0xffffffff){ |
| report("premature end of data when reading!\n"); |
| } |
| if(test!=(b[i]&mask[tbit])){ |
| fprintf(stderr,"%ld) %lx %lx\n",i,(b[i]&mask[tbit]),test); |
| report("read incorrect value!\n"); |
| } |
| bitcount+=tbit; |
| |
| if(bitcount!=oggpack_bits(&r)) |
| report("wrong number of bits while reading!\n"); |
| if((bitcount+7)/8!=oggpack_bytes(&r)) |
| report("wrong number of bytes while reading!\n"); |
| |
| } |
| if(oggpack_bytes(&r)!=(bitcount+7)/8){ |
| fprintf(stderr, "%d vs %d\n", oggpack_bytes(&r), (bitcount+7)/8); |
| report("leftover bytes after read!\n"); |
| } |
| ogg_buffer_release(or); |
| } |
| |
| void _end_verify(int count){ |
| int i; |
| |
| /* are the proper number of bits left over? */ |
| int leftover=count*8-oggpack_bits(&o); |
| if(leftover>7) |
| report("\nERROR: too many bits reported left over.\n"); |
| |
| /* does reading to exactly byte alignment *not* trip EOF? */ |
| if(oggpack_read(&o,leftover)==-1) |
| report("\nERROR: read to but not past exact end tripped EOF.\n"); |
| if(oggpack_bits(&o)!=count*8) |
| report("\nERROR: read to but not past exact end reported bad bitcount.\n"); |
| |
| /* does EOF trip properly after a single additional bit? */ |
| if(oggpack_read(&o,1)!=-1) |
| report("\nERROR: read past exact end did not trip EOF.\n"); |
| if(oggpack_bits(&o)!=count*8) |
| report("\nERROR: read past exact end reported bad bitcount.\n"); |
| |
| /* does EOF stay set over additional bit reads? */ |
| for(i=0;i<=32;i++){ |
| if(oggpack_read(&o,i)!=-1) |
| report("\nERROR: EOF did not stay set on stream.\n"); |
| if(oggpack_bits(&o)!=count*8) |
| report("\nERROR: read past exact end reported bad bitcount.\n"); |
| } |
| } |
| |
| void _end_verify2(int count){ |
| int i; |
| |
| /* are the proper number of bits left over? */ |
| int leftover=count*8-oggpack_bits(&o); |
| if(leftover>7) |
| report("\nERROR: too many bits reported left over.\n"); |
| |
| /* does reading to exactly byte alignment *not* trip EOF? */ |
| oggpack_adv(&o,leftover); |
| #ifdef ARM_LITTLE_ENDIAN |
| if(o.bitsLeftInSegment!=0) |
| #else |
| if(o.headend!=0) |
| #endif |
| report("\nERROR: read to but not past exact end tripped EOF.\n"); |
| if(oggpack_bits(&o)!=count*8) |
| report("\nERROR: read to but not past exact end reported bad bitcount.\n"); |
| |
| /* does EOF trip properly after a single additional bit? */ |
| oggpack_adv(&o,1); |
| #ifdef ARM_LITTLE_ENDIAN |
| if(o.bitsLeftInSegment>=0) |
| #else |
| if(o.headend>=0) |
| #endif |
| report("\nERROR: read past exact end did not trip EOF.\n"); |
| if(oggpack_bits(&o)!=count*8) |
| report("\nERROR: read past exact end reported bad bitcount.\n"); |
| |
| /* does EOF stay set over additional bit reads? */ |
| for(i=0;i<=32;i++){ |
| oggpack_adv(&o,i); |
| #ifdef ARM_LITTLE_ENDIAN |
| if(o.bitsLeftInSegment>=0) |
| #else |
| if(o.headend>=0) |
| #endif |
| report("\nERROR: EOF did not stay set on stream.\n"); |
| if(oggpack_bits(&o)!=count*8) |
| report("\nERROR: read past exact end reported bad bitcount.\n"); |
| } |
| } |
| |
| long ogg_buffer_length(ogg_reference *or){ |
| int count=0; |
| while(or){ |
| count+=or->length; |
| or=or->next; |
| } |
| return count; |
| } |
| |
| ogg_reference *ogg_buffer_extend(ogg_reference *or,long bytes){ |
| if(or){ |
| while(or->next){ |
| or=or->next; |
| } |
| or->next=ogg_buffer_alloc(or->buffer->ptr.owner,bytes); |
| return(or->next); |
| } |
| return 0; |
| } |
| |
| void ogg_buffer_posttruncate(ogg_reference *or,long pos){ |
| /* walk to the point where we want to begin truncate */ |
| while(or && pos>or->length){ |
| pos-=or->length; |
| or=or->next; |
| } |
| if(or){ |
| ogg_buffer_release(or->next); |
| or->next=0; |
| or->length=pos; |
| } |
| } |
| |
| int main(void){ |
| long i; |
| static unsigned long testbuffer1[]= |
| {18,12,103948,4325,543,76,432,52,3,65,4,56,32,42,34,21,1,23,32,546,456,7, |
| 567,56,8,8,55,3,52,342,341,4,265,7,67,86,2199,21,7,1,5,1,4}; |
| int test1size=43; |
| |
| static unsigned long testbuffer2[]= |
| {216531625L,1237861823,56732452,131,3212421,12325343,34547562,12313212, |
| 1233432,534,5,346435231,14436467,7869299,76326614,167548585, |
| 85525151,0,12321,1,349528352}; |
| int test2size=21; |
| |
| static unsigned long testbuffer3[]= |
| {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, |
| 0,1,30,1,1,1,0,0,1,0,0,0,12,0,11,0,1,0,0,1}; |
| int test3size=56; |
| |
| static unsigned long large[]= |
| {2136531625L,2137861823,56732452,131,3212421,12325343,34547562,12313212, |
| 1233432,534,5,2146435231,14436467,7869299,76326614,167548585, |
| 85525151,0,12321,1,2146528352}; |
| |
| int onesize=33; |
| static int one[33]={146,25,44,151,195,15,153,176,233,131,196,65,85,172,47,40, |
| 34,242,223,136,35,222,211,86,171,50,225,135,214,75,172, |
| 223,4}; |
| |
| int twosize=6; |
| static int two[6]={61,255,255,251,231,29}; |
| |
| int threesize=54; |
| static int three[54]={169,2,232,252,91,132,156,36,89,13,123,176,144,32,254, |
| 142,224,85,59,121,144,79,124,23,67,90,90,216,79,23,83, |
| 58,135,196,61,55,129,183,54,101,100,170,37,127,126,10, |
| 100,52,4,14,18,86,77,1}; |
| |
| int foursize=38; |
| static int four[38]={18,6,163,252,97,194,104,131,32,1,7,82,137,42,129,11,72, |
| 132,60,220,112,8,196,109,64,179,86,9,137,195,208,122,169, |
| 28,2,133,0,1}; |
| |
| int fivesize=45; |
| static int five[45]={169,2,126,139,144,172,30,4,80,72,240,59,130,218,73,62, |
| 241,24,210,44,4,20,0,248,116,49,135,100,110,130,181,169, |
| 84,75,159,2,1,0,132,192,8,0,0,18,22}; |
| |
| int sixsize=7; |
| static int six[7]={17,177,170,242,169,19,148}; |
| |
| /* Test read/write together */ |
| /* Later we test against pregenerated bitstreams */ |
| bs=ogg_buffer_create(); |
| |
| fprintf(stderr,"\nSmall preclipped packing (LSb): "); |
| cliptest(testbuffer1,test1size,0,one,onesize); |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\nNull bit call (LSb): "); |
| cliptest(testbuffer3,test3size,0,two,twosize); |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\nLarge preclipped packing (LSb): "); |
| cliptest(testbuffer2,test2size,0,three,threesize); |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\n32 bit preclipped packing (LSb): "); |
| |
| or=ogg_buffer_alloc(bs,128); |
| for(i=0;i<test2size;i++){ |
| or->buffer->data[i*4] = large[i]&0xff; |
| or->buffer->data[i*4+1] = (large[i]>>8)&0xff; |
| or->buffer->data[i*4+2] = (large[i]>>16)&0xff; |
| or->buffer->data[i*4+3] = (large[i]>>24)&0xff; |
| } |
| or->length=test2size*4; |
| oggpack_readinit(&r,or); |
| for(i=0;i<test2size;i++){ |
| unsigned long test; |
| if((test=oggpack_look(&r,32))==0xffffffffUL)report("out of data. failed!"); |
| if(test!=large[i]){ |
| fprintf(stderr,"%ld != %ld (%lx!=%lx):",test,large[i], |
| test,large[i]); |
| report("read incorrect value!\n"); |
| } |
| oggpack_adv(&r,32); |
| } |
| ogg_buffer_release(or); |
| if(oggpack_bytes(&r)!=test2size*4){ |
| fprintf(stderr, "%d vs %d\n", oggpack_bytes(&r), test2size*4); |
| report("leftover bytes after read!\n"); |
| } |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\nSmall unclipped packing (LSb): "); |
| cliptest(testbuffer1,test1size,7,four,foursize); |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\nLarge unclipped packing (LSb): "); |
| cliptest(testbuffer2,test2size,17,five,fivesize); |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\nSingle bit unclipped packing (LSb): "); |
| cliptest(testbuffer3,test3size,1,six,sixsize); |
| fprintf(stderr,"ok."); |
| |
| fprintf(stderr,"\nTesting read past end (LSb): "); |
| { |
| unsigned char dda[]={0,0,0,0}; |
| ogg_buffer lob={dda,8,0,{0}}; |
| ogg_reference lor={&lob,0,8,0}; |
| |
| oggpack_readinit(&r,&lor); |
| for(i=0;i<64;i++){ |
| if(oggpack_read(&r,1)<0){ |
| fprintf(stderr,"failed; got -1 prematurely.\n"); |
| exit(1); |
| } |
| } |
| if(oggpack_look(&r,1)!=-1 || |
| oggpack_read(&r,1)!=-1){ |
| fprintf(stderr,"failed; read past end without -1.\n"); |
| exit(1); |
| } |
| } |
| { |
| unsigned char dda[]={0,0,0,0}; |
| ogg_buffer lob={dda,8,0,{0}}; |
| ogg_reference lor={&lob,0,8,0}; |
| unsigned long test; |
| |
| oggpack_readinit(&r,&lor); |
| if((test=oggpack_read(&r,30))==0xffffffffUL || |
| (test=oggpack_read(&r,16))==0xffffffffUL){ |
| fprintf(stderr,"failed 2; got -1 prematurely.\n"); |
| exit(1); |
| } |
| |
| if((test=oggpack_look(&r,18))==0xffffffffUL){ |
| fprintf(stderr,"failed 3; got -1 prematurely.\n"); |
| exit(1); |
| } |
| if((test=oggpack_look(&r,19))!=0xffffffffUL){ |
| fprintf(stderr,"failed; read past end without -1.\n"); |
| exit(1); |
| } |
| if((test=oggpack_look(&r,32))!=0xffffffffUL){ |
| fprintf(stderr,"failed; read past end without -1.\n"); |
| exit(1); |
| } |
| } |
| fprintf(stderr,"ok.\n"); |
| |
| /* now the scary shit: randomized testing */ |
| |
| for(i=0;i<10000;i++){ |
| long j,count=0,count2=0,bitcount=0; |
| unsigned long values[TESTWORDS]; |
| int len[TESTWORDS]; |
| unsigned char flat[4*TESTWORDS]; /* max possible needed size */ |
| |
| memset(flat,0,sizeof(flat)); |
| fprintf(stderr,"\rRandomized testing (LSb)... (%ld) ",10000-i); |
| |
| /* generate a list of words and lengths */ |
| /* write the required number of bits out to packbuffer */ |
| { |
| long word=0; |
| long bit=0; |
| int k; |
| |
| for(j=0;j<TESTWORDS;j++){ |
| values[j]=rand(); |
| len[j]=(rand()%33); |
| |
| for(k=0;k<len[j];k++){ |
| flat[word] |= ((values[j]>>k)&0x1)<<bit; |
| bit++; |
| bitcount++; |
| if(bit>7){ |
| bit=0; |
| word++; |
| } |
| } |
| } |
| } |
| count2=(bitcount+7)>>3; |
| |
| /* construct random-length buffer chain from flat vector; random |
| byte starting offset within the length of the vector */ |
| { |
| ogg_reference *or=NULL,*orl=NULL; |
| long pos=0; |
| |
| /* build buffer chain */ |
| while(count2){ |
| int ilen=(rand()%32),k; |
| int ibegin=(rand()%32); |
| |
| |
| if(ilen>count2)ilen=count2; |
| |
| if(or) |
| orl=ogg_buffer_extend(orl,64); |
| else |
| or=orl=ogg_buffer_alloc(bs,64); |
| |
| orl->length=ilen; |
| orl->begin=ibegin; |
| |
| for(k=0;k<ilen;k++) |
| orl->buffer->data[ibegin++]= flat[pos++]; |
| |
| count2-=ilen; |
| } |
| |
| if(ogg_buffer_length(or)!=(bitcount+7)/8){ |
| fprintf(stderr,"\nERROR: buffer length incorrect after build.\n"); |
| exit(1); |
| } |
| |
| |
| { |
| int begin=0; //=(rand()%TESTWORDS); |
| int ilen=(rand()%(TESTWORDS-begin)); |
| int bitoffset,bitcount=0; |
| unsigned long temp; |
| |
| for(j=0;j<begin;j++) |
| bitcount+=len[j]; |
| or=ogg_buffer_pretruncate(or,bitcount/8); |
| bitoffset=bitcount%=8; |
| for(;j<begin+ilen;j++) |
| bitcount+=len[j]; |
| ogg_buffer_posttruncate(or,((bitcount+7)/8)); |
| |
| if((count=ogg_buffer_length(or))!=(bitcount+7)/8){ |
| fprintf(stderr,"\nERROR: buffer length incorrect after truncate.\n"); |
| exit(1); |
| } |
| |
| oggpack_readinit(&o,or); |
| |
| /* verify bit count */ |
| if(oggpack_bits(&o)!=0){ |
| fprintf(stderr,"\nERROR: Read bitcounter not zero!\n"); |
| exit(1); |
| } |
| if(oggpack_bytes(&o)!=0){ |
| fprintf(stderr,"\nERROR: Read bytecounter not zero!\n"); |
| exit(1); |
| } |
| |
| bitcount=bitoffset; |
| oggpack_read(&o,bitoffset); |
| |
| /* read and compare to original list */ |
| for(j=begin;j<begin+ilen;j++){ |
| temp=oggpack_read(&o,len[j]); |
| if(temp==0xffffffffUL){ |
| fprintf(stderr,"\nERROR: End of stream too soon! word: %ld,%d\n", |
| j-begin,ilen); |
| exit(1); |
| } |
| if(temp!=(values[j]&mask[len[j]])){ |
| fprintf(stderr,"\nERROR: Incorrect read %lx != %lx, word %ld, len %d\n" |
| , |
| values[j]&mask[len[j]],temp,j-begin,len[j]); |
| exit(1); |
| } |
| bitcount+=len[j]; |
| if(oggpack_bits(&o)!=bitcount){ |
| fprintf(stderr,"\nERROR: Read bitcounter %d != %ld!\n", |
| bitcount,oggpack_bits(&o)); |
| exit(1); |
| } |
| if(oggpack_bytes(&o)!=(bitcount+7)/8){ |
| fprintf(stderr,"\nERROR: Read bytecounter %d != %ld!\n", |
| (bitcount+7)/8,oggpack_bytes(&o)); |
| exit(1); |
| } |
| |
| } |
| _end_verify(count); |
| |
| /* look/adv version */ |
| oggpack_readinit(&o,or); |
| bitcount=bitoffset; |
| oggpack_adv(&o,bitoffset); |
| |
| /* read and compare to original list */ |
| for(j=begin;j<begin+ilen;j++){ |
| temp=oggpack_look(&o,len[j]); |
| |
| if(temp==0xffffffffUL){ |
| fprintf(stderr,"\nERROR: End of stream too soon! word: %ld\n", |
| j-begin); |
| exit(1); |
| } |
| if(temp!=(values[j]&mask[len[j]])){ |
| fprintf(stderr,"\nERROR: Incorrect look %lx != %lx, word %ld, len %d\n" |
| , |
| values[j]&mask[len[j]],temp,j-begin,len[j]); |
| exit(1); |
| } |
| oggpack_adv(&o,len[j]); |
| bitcount+=len[j]; |
| if(oggpack_bits(&o)!=bitcount){ |
| fprintf(stderr,"\nERROR: Look/Adv bitcounter %d != %ld!\n", |
| bitcount,oggpack_bits(&o)); |
| exit(1); |
| } |
| if(oggpack_bytes(&o)!=(bitcount+7)/8){ |
| fprintf(stderr,"\nERROR: Look/Adv bytecounter %d != %ld!\n", |
| (bitcount+7)/8,oggpack_bytes(&o)); |
| exit(1); |
| } |
| |
| } |
| _end_verify2(count); |
| |
| } |
| ogg_buffer_release(or); |
| } |
| } |
| fprintf(stderr,"\rRandomized testing (LSb)... ok. \n"); |
| |
| return(0); |
| } |
| |
| #ifdef _WIN32_WCE |
| int WinMain(void){ |
| return main(); |
| } |
| #endif |
| |
| #endif |