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virtualx-engine/thirdparty/libogg/bitwise.c
Rémi Verschelde d9a291f641 ogg/vorbis/opus: Make them modules and unbundle thirdparty libs 
Took the opportunity to undo the Godot changed made to the
opus source. The opus module should eventually be built in its
own environment to avoid polluting others with too many include
dirs and defines.

TODO: Fix the platform/ stuff for opus.
2016-10-15 11:50:40 +02:00

1088 lines
30 KiB
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/********************************************************************
* *
* THIS FILE IS PART OF THE Ogg CONTAINER SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2014 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: packing variable sized words into an octet stream
last mod: $Id: bitwise.c 19149 2014-05-27 16:26:23Z giles $
********************************************************************/
/* 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 <limits.h>
#include <ogg/ogg.h>
#define BUFFER_INCREMENT 256
static const 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 };
static const unsigned int mask8B[]=
{0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff};
void oggpack_writeinit(oggpack_buffer *b){
memset(b,0,sizeof(*b));
b->ptr=b->buffer=_ogg_malloc(BUFFER_INCREMENT);
b->buffer[0]='\0';
b->storage=BUFFER_INCREMENT;
}
void oggpackB_writeinit(oggpack_buffer *b){
oggpack_writeinit(b);
}
int oggpack_writecheck(oggpack_buffer *b){
if(!b->ptr || !b->storage)return -1;
return 0;
}
int oggpackB_writecheck(oggpack_buffer *b){
return oggpack_writecheck(b);
}
void oggpack_writetrunc(oggpack_buffer *b,long bits){
long bytes=bits>>3;
if(b->ptr){
bits-=bytes*8;
b->ptr=b->buffer+bytes;
b->endbit=bits;
b->endbyte=bytes;
*b->ptr&=mask[bits];
}
}
void oggpackB_writetrunc(oggpack_buffer *b,long bits){
long bytes=bits>>3;
if(b->ptr){
bits-=bytes*8;
b->ptr=b->buffer+bytes;
b->endbit=bits;
b->endbyte=bytes;
*b->ptr&=mask8B[bits];
}
}
/* Takes only up to 32 bits. */
void oggpack_write(oggpack_buffer *b,unsigned long value,int bits){
if(bits<0 || bits>32) goto err;
if(b->endbyte>=b->storage-4){
void *ret;
if(!b->ptr)return;
if(b->storage>LONG_MAX-BUFFER_INCREMENT) goto err;
ret=_ogg_realloc(b->buffer,b->storage+BUFFER_INCREMENT);
if(!ret) goto err;
b->buffer=ret;
b->storage+=BUFFER_INCREMENT;
b->ptr=b->buffer+b->endbyte;
}
value&=mask[bits];
bits+=b->endbit;
b->ptr[0]|=value<<b->endbit;
if(bits>=8){
b->ptr[1]=(unsigned char)(value>>(8-b->endbit));
if(bits>=16){
b->ptr[2]=(unsigned char)(value>>(16-b->endbit));
if(bits>=24){
b->ptr[3]=(unsigned char)(value>>(24-b->endbit));
if(bits>=32){
if(b->endbit)
b->ptr[4]=(unsigned char)(value>>(32-b->endbit));
else
b->ptr[4]=0;
}
}
}
}
b->endbyte+=bits/8;
b->ptr+=bits/8;
b->endbit=bits&7;
return;
err:
oggpack_writeclear(b);
}
/* Takes only up to 32 bits. */
void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits){
if(bits<0 || bits>32) goto err;
if(b->endbyte>=b->storage-4){
void *ret;
if(!b->ptr)return;
if(b->storage>LONG_MAX-BUFFER_INCREMENT) goto err;
ret=_ogg_realloc(b->buffer,b->storage+BUFFER_INCREMENT);
if(!ret) goto err;
b->buffer=ret;
b->storage+=BUFFER_INCREMENT;
b->ptr=b->buffer+b->endbyte;
}
value=(value&mask[bits])<<(32-bits);
bits+=b->endbit;
b->ptr[0]|=value>>(24+b->endbit);
if(bits>=8){
b->ptr[1]=(unsigned char)(value>>(16+b->endbit));
if(bits>=16){
b->ptr[2]=(unsigned char)(value>>(8+b->endbit));
if(bits>=24){
b->ptr[3]=(unsigned char)(value>>(b->endbit));
if(bits>=32){
if(b->endbit)
b->ptr[4]=(unsigned char)(value<<(8-b->endbit));
else
b->ptr[4]=0;
}
}
}
}
b->endbyte+=bits/8;
b->ptr+=bits/8;
b->endbit=bits&7;
return;
err:
oggpack_writeclear(b);
}
void oggpack_writealign(oggpack_buffer *b){
int bits=8-b->endbit;
if(bits<8)
oggpack_write(b,0,bits);
}
void oggpackB_writealign(oggpack_buffer *b){
int bits=8-b->endbit;
if(bits<8)
oggpackB_write(b,0,bits);
}
static void oggpack_writecopy_helper(oggpack_buffer *b,
void *source,
long bits,
void (*w)(oggpack_buffer *,
unsigned long,
int),
int msb){
unsigned char *ptr=(unsigned char *)source;
long bytes=bits/8;
long pbytes=(b->endbit+bits)/8;
bits-=bytes*8;
/* expand storage up-front */
if(b->endbyte+pbytes>=b->storage){
void *ret;
if(!b->ptr) goto err;
if(b->storage>b->endbyte+pbytes+BUFFER_INCREMENT) goto err;
b->storage=b->endbyte+pbytes+BUFFER_INCREMENT;
ret=_ogg_realloc(b->buffer,b->storage);
if(!ret) goto err;
b->buffer=ret;
b->ptr=b->buffer+b->endbyte;
}
/* copy whole octets */
if(b->endbit){
int i;
/* unaligned copy. Do it the hard way. */
for(i=0;i<bytes;i++)
w(b,(unsigned long)(ptr[i]),8);
}else{
/* aligned block copy */
memmove(b->ptr,source,bytes);
b->ptr+=bytes;
b->endbyte+=bytes;
*b->ptr=0;
}
/* copy trailing bits */
if(bits){
if(msb)
w(b,(unsigned long)(ptr[bytes]>>(8-bits)),bits);
else
w(b,(unsigned long)(ptr[bytes]),bits);
}
return;
err:
oggpack_writeclear(b);
}
void oggpack_writecopy(oggpack_buffer *b,void *source,long bits){
oggpack_writecopy_helper(b,source,bits,oggpack_write,0);
}
void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits){
oggpack_writecopy_helper(b,source,bits,oggpackB_write,1);
}
void oggpack_reset(oggpack_buffer *b){
if(!b->ptr)return;
b->ptr=b->buffer;
b->buffer[0]=0;
b->endbit=b->endbyte=0;
}
void oggpackB_reset(oggpack_buffer *b){
oggpack_reset(b);
}
void oggpack_writeclear(oggpack_buffer *b){
if(b->buffer)_ogg_free(b->buffer);
memset(b,0,sizeof(*b));
}
void oggpackB_writeclear(oggpack_buffer *b){
oggpack_writeclear(b);
}
void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){
memset(b,0,sizeof(*b));
b->buffer=b->ptr=buf;
b->storage=bytes;
}
void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){
oggpack_readinit(b,buf,bytes);
}
/* Read in bits without advancing the bitptr; bits <= 32 */
long oggpack_look(oggpack_buffer *b,int bits){
unsigned long ret;
unsigned long m;
if(bits<0 || bits>32) return -1;
m=mask[bits];
bits+=b->endbit;
if(b->endbyte >= b->storage-4){
/* not the main path */
if(b->endbyte > b->storage-((bits+7)>>3)) return -1;
/* special case to avoid reading b->ptr[0], which might be past the end of
the buffer; also skips some useless accounting */
else if(!bits)return(0L);
}
ret=b->ptr[0]>>b->endbit;
if(bits>8){
ret|=b->ptr[1]<<(8-b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(16-b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(24-b->endbit);
if(bits>32 && b->endbit)
ret|=b->ptr[4]<<(32-b->endbit);
}
}
}
return(m&ret);
}
/* Read in bits without advancing the bitptr; bits <= 32 */
long oggpackB_look(oggpack_buffer *b,int bits){
unsigned long ret;
int m=32-bits;
if(m<0 || m>32) return -1;
bits+=b->endbit;
if(b->endbyte >= b->storage-4){
/* not the main path */
if(b->endbyte > b->storage-((bits+7)>>3)) return -1;
/* special case to avoid reading b->ptr[0], which might be past the end of
the buffer; also skips some useless accounting */
else if(!bits)return(0L);
}
ret=b->ptr[0]<<(24+b->endbit);
if(bits>8){
ret|=b->ptr[1]<<(16+b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(8+b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(b->endbit);
if(bits>32 && b->endbit)
ret|=b->ptr[4]>>(8-b->endbit);
}
}
}
return ((ret&0xffffffff)>>(m>>1))>>((m+1)>>1);
}
long oggpack_look1(oggpack_buffer *b){
if(b->endbyte>=b->storage)return(-1);
return((b->ptr[0]>>b->endbit)&1);
}
long oggpackB_look1(oggpack_buffer *b){
if(b->endbyte>=b->storage)return(-1);
return((b->ptr[0]>>(7-b->endbit))&1);
}
void oggpack_adv(oggpack_buffer *b,int bits){
bits+=b->endbit;
if(b->endbyte > b->storage-((bits+7)>>3)) goto overflow;
b->ptr+=bits/8;
b->endbyte+=bits/8;
b->endbit=bits&7;
return;
overflow:
b->ptr=NULL;
b->endbyte=b->storage;
b->endbit=1;
}
void oggpackB_adv(oggpack_buffer *b,int bits){
oggpack_adv(b,bits);
}
void oggpack_adv1(oggpack_buffer *b){
if(++(b->endbit)>7){
b->endbit=0;
b->ptr++;
b->endbyte++;
}
}
void oggpackB_adv1(oggpack_buffer *b){
oggpack_adv1(b);
}
/* bits <= 32 */
long oggpack_read(oggpack_buffer *b,int bits){
long ret;
unsigned long m;
if(bits<0 || bits>32) goto err;
m=mask[bits];
bits+=b->endbit;
if(b->endbyte >= b->storage-4){
/* not the main path */
if(b->endbyte > b->storage-((bits+7)>>3)) goto overflow;
/* special case to avoid reading b->ptr[0], which might be past the end of
the buffer; also skips some useless accounting */
else if(!bits)return(0L);
}
ret=b->ptr[0]>>b->endbit;
if(bits>8){
ret|=b->ptr[1]<<(8-b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(16-b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(24-b->endbit);
if(bits>32 && b->endbit){
ret|=b->ptr[4]<<(32-b->endbit);
}
}
}
}
ret&=m;
b->ptr+=bits/8;
b->endbyte+=bits/8;
b->endbit=bits&7;
return ret;
overflow:
err:
b->ptr=NULL;
b->endbyte=b->storage;
b->endbit=1;
return -1L;
}
/* bits <= 32 */
long oggpackB_read(oggpack_buffer *b,int bits){
long ret;
long m=32-bits;
if(m<0 || m>32) goto err;
bits+=b->endbit;
if(b->endbyte+4>=b->storage){
/* not the main path */
if(b->endbyte > b->storage-((bits+7)>>3)) goto overflow;
/* special case to avoid reading b->ptr[0], which might be past the end of
the buffer; also skips some useless accounting */
else if(!bits)return(0L);
}
ret=b->ptr[0]<<(24+b->endbit);
if(bits>8){
ret|=b->ptr[1]<<(16+b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(8+b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(b->endbit);
if(bits>32 && b->endbit)
ret|=b->ptr[4]>>(8-b->endbit);
}
}
}
ret=((ret&0xffffffffUL)>>(m>>1))>>((m+1)>>1);
b->ptr+=bits/8;
b->endbyte+=bits/8;
b->endbit=bits&7;
return ret;
overflow:
err:
b->ptr=NULL;
b->endbyte=b->storage;
b->endbit=1;
return -1L;
}
long oggpack_read1(oggpack_buffer *b){
long ret;
if(b->endbyte >= b->storage) goto overflow;
ret=(b->ptr[0]>>b->endbit)&1;
b->endbit++;
if(b->endbit>7){
b->endbit=0;
b->ptr++;
b->endbyte++;
}
return ret;
overflow:
b->ptr=NULL;
b->endbyte=b->storage;
b->endbit=1;
return -1L;
}
long oggpackB_read1(oggpack_buffer *b){
long ret;
if(b->endbyte >= b->storage) goto overflow;
ret=(b->ptr[0]>>(7-b->endbit))&1;
b->endbit++;
if(b->endbit>7){
b->endbit=0;
b->ptr++;
b->endbyte++;
}
return ret;
overflow:
b->ptr=NULL;
b->endbyte=b->storage;
b->endbit=1;
return -1L;
}
long oggpack_bytes(oggpack_buffer *b){
return(b->endbyte+(b->endbit+7)/8);
}
long oggpack_bits(oggpack_buffer *b){
return(b->endbyte*8+b->endbit);
}
long oggpackB_bytes(oggpack_buffer *b){
return oggpack_bytes(b);
}
long oggpackB_bits(oggpack_buffer *b){
return oggpack_bits(b);
}
unsigned char *oggpack_get_buffer(oggpack_buffer *b){
return(b->buffer);
}
unsigned char *oggpackB_get_buffer(oggpack_buffer *b){
return oggpack_get_buffer(b);
}
/* Self test of the bitwise routines; everything else is based on
them, so they damned well better be solid. */
#ifdef _V_SELFTEST
#include <stdio.h>
static int ilog(unsigned int v){
int ret=0;
while(v){
ret++;
v>>=1;
}
return(ret);
}
oggpack_buffer o;
oggpack_buffer r;
void report(char *in){
fprintf(stderr,"%s",in);
exit(1);
}
void cliptest(unsigned long *b,int vals,int bits,int *comp,int compsize){
long bytes,i;
unsigned char *buffer;
oggpack_reset(&o);
for(i=0;i<vals;i++)
oggpack_write(&o,b[i],bits?bits:ilog(b[i]));
buffer=oggpack_get_buffer(&o);
bytes=oggpack_bytes(&o);
if(bytes!=compsize)report("wrong number of bytes!\n");
for(i=0;i<bytes;i++)if(buffer[i]!=comp[i]){
for(i=0;i<bytes;i++)fprintf(stderr,"%x %x\n",(int)buffer[i],(int)comp[i]);
report("wrote incorrect value!\n");
}
oggpack_readinit(&r,buffer,bytes);
for(i=0;i<vals;i++){
int tbit=bits?bits:ilog(b[i]);
if(oggpack_look(&r,tbit)==-1)
report("out of data!\n");
if(oggpack_look(&r,tbit)!=(b[i]&mask[tbit]))
report("looked at incorrect value!\n");
if(tbit==1)
if(oggpack_look1(&r)!=(b[i]&mask[tbit]))
report("looked at single bit incorrect value!\n");
if(tbit==1){
if(oggpack_read1(&r)!=(b[i]&mask[tbit]))
report("read incorrect single bit value!\n");
}else{
if(oggpack_read(&r,tbit)!=(b[i]&mask[tbit]))
report("read incorrect value!\n");
}
}
if(oggpack_bytes(&r)!=bytes)report("leftover bytes after read!\n");
}
void cliptestB(unsigned long *b,int vals,int bits,int *comp,int compsize){
long bytes,i;
unsigned char *buffer;
oggpackB_reset(&o);
for(i=0;i<vals;i++)
oggpackB_write(&o,b[i],bits?bits:ilog(b[i]));
buffer=oggpackB_get_buffer(&o);
bytes=oggpackB_bytes(&o);
if(bytes!=compsize)report("wrong number of bytes!\n");
for(i=0;i<bytes;i++)if(buffer[i]!=comp[i]){
for(i=0;i<bytes;i++)fprintf(stderr,"%x %x\n",(int)buffer[i],(int)comp[i]);
report("wrote incorrect value!\n");
}
oggpackB_readinit(&r,buffer,bytes);
for(i=0;i<vals;i++){
int tbit=bits?bits:ilog(b[i]);
if(oggpackB_look(&r,tbit)==-1)
report("out of data!\n");
if(oggpackB_look(&r,tbit)!=(b[i]&mask[tbit]))
report("looked at incorrect value!\n");
if(tbit==1)
if(oggpackB_look1(&r)!=(b[i]&mask[tbit]))
report("looked at single bit incorrect value!\n");
if(tbit==1){
if(oggpackB_read1(&r)!=(b[i]&mask[tbit]))
report("read incorrect single bit value!\n");
}else{
if(oggpackB_read(&r,tbit)!=(b[i]&mask[tbit]))
report("read incorrect value!\n");
}
}
if(oggpackB_bytes(&r)!=bytes)report("leftover bytes after read!\n");
}
void copytest(int prefill, int copy){
oggpack_buffer source_write;
oggpack_buffer dest_write;
oggpack_buffer source_read;
oggpack_buffer dest_read;
unsigned char *source;
unsigned char *dest;
long source_bytes,dest_bytes;
int i;
oggpack_writeinit(&source_write);
oggpack_writeinit(&dest_write);
for(i=0;i<(prefill+copy+7)/8;i++)
oggpack_write(&source_write,(i^0x5a)&0xff,8);
source=oggpack_get_buffer(&source_write);
source_bytes=oggpack_bytes(&source_write);
/* prefill */
oggpack_writecopy(&dest_write,source,prefill);
/* check buffers; verify end byte masking */
dest=oggpack_get_buffer(&dest_write);
dest_bytes=oggpack_bytes(&dest_write);
if(dest_bytes!=(prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill! %ld!=%d\n",dest_bytes,(prefill+7)/8);
exit(1);
}
oggpack_readinit(&source_read,source,source_bytes);
oggpack_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpack_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpack_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
if(prefill<dest_bytes){
if(oggpack_read(&dest_read,dest_bytes-prefill)!=0){
fprintf(stderr,"prefill=%d mismatch! trailing bits not zero\n",prefill);
exit(1);
}
}
/* second copy */
oggpack_writecopy(&dest_write,source,copy);
/* check buffers; verify end byte masking */
dest=oggpack_get_buffer(&dest_write);
dest_bytes=oggpack_bytes(&dest_write);
if(dest_bytes!=(copy+prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill+copy! %ld!=%d\n",dest_bytes,(copy+prefill+7)/8);
exit(1);
}
oggpack_readinit(&source_read,source,source_bytes);
oggpack_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpack_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpack_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
oggpack_readinit(&source_read,source,source_bytes);
for(i=0;i<copy;i+=8){
int s=oggpack_read(&source_read,copy-i<8?copy-i:8);
int d=oggpack_read(&dest_read,copy-i<8?copy-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d copy=%d mismatch! byte %d, %x!=%x\n",prefill,copy,i/8,s,d);
exit(1);
}
}
if(copy+prefill<dest_bytes){
if(oggpack_read(&dest_read,dest_bytes-copy-prefill)!=0){
fprintf(stderr,"prefill=%d copy=%d mismatch! trailing bits not zero\n",prefill,copy);
exit(1);
}
}
oggpack_writeclear(&source_write);
oggpack_writeclear(&dest_write);
}
void copytestB(int prefill, int copy){
oggpack_buffer source_write;
oggpack_buffer dest_write;
oggpack_buffer source_read;
oggpack_buffer dest_read;
unsigned char *source;
unsigned char *dest;
long source_bytes,dest_bytes;
int i;
oggpackB_writeinit(&source_write);
oggpackB_writeinit(&dest_write);
for(i=0;i<(prefill+copy+7)/8;i++)
oggpackB_write(&source_write,(i^0x5a)&0xff,8);
source=oggpackB_get_buffer(&source_write);
source_bytes=oggpackB_bytes(&source_write);
/* prefill */
oggpackB_writecopy(&dest_write,source,prefill);
/* check buffers; verify end byte masking */
dest=oggpackB_get_buffer(&dest_write);
dest_bytes=oggpackB_bytes(&dest_write);
if(dest_bytes!=(prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill! %ld!=%d\n",dest_bytes,(prefill+7)/8);
exit(1);
}
oggpackB_readinit(&source_read,source,source_bytes);
oggpackB_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpackB_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpackB_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
if(prefill<dest_bytes){
if(oggpackB_read(&dest_read,dest_bytes-prefill)!=0){
fprintf(stderr,"prefill=%d mismatch! trailing bits not zero\n",prefill);
exit(1);
}
}
/* second copy */
oggpackB_writecopy(&dest_write,source,copy);
/* check buffers; verify end byte masking */
dest=oggpackB_get_buffer(&dest_write);
dest_bytes=oggpackB_bytes(&dest_write);
if(dest_bytes!=(copy+prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill+copy! %ld!=%d\n",dest_bytes,(copy+prefill+7)/8);
exit(1);
}
oggpackB_readinit(&source_read,source,source_bytes);
oggpackB_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpackB_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpackB_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
oggpackB_readinit(&source_read,source,source_bytes);
for(i=0;i<copy;i+=8){
int s=oggpackB_read(&source_read,copy-i<8?copy-i:8);
int d=oggpackB_read(&dest_read,copy-i<8?copy-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d copy=%d mismatch! byte %d, %x!=%x\n",prefill,copy,i/8,s,d);
exit(1);
}
}
if(copy+prefill<dest_bytes){
if(oggpackB_read(&dest_read,dest_bytes-copy-prefill)!=0){
fprintf(stderr,"prefill=%d copy=%d mismatch! trailing bits not zero\n",prefill,copy);
exit(1);
}
}
oggpackB_writeclear(&source_write);
oggpackB_writeclear(&dest_write);
}
int main(void){
unsigned char *buffer;
long bytes,i,j;
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};
static int oneB[33]={150,101,131,33,203,15,204,216,105,193,156,65,84,85,222,
8,139,145,227,126,34,55,244,171,85,100,39,195,173,18,
245,251,128};
int twosize=6;
static int two[6]={61,255,255,251,231,29};
static int twoB[6]={247,63,255,253,249,120};
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};
static int threeB[54]={206,128,42,153,57,8,183,251,13,89,36,30,32,144,183,
130,59,240,121,59,85,223,19,228,180,134,33,107,74,98,
233,253,196,135,63,2,110,114,50,155,90,127,37,170,104,
200,20,254,4,58,106,176,144,0};
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};
static int fourB[38]={36,48,102,83,243,24,52,7,4,35,132,10,145,21,2,93,2,41,
1,219,184,16,33,184,54,149,170,132,18,30,29,98,229,67,
129,10,4,32};
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};
static int fiveB[45]={1,84,145,111,245,100,128,8,56,36,40,71,126,78,213,226,
124,105,12,0,133,128,0,162,233,242,67,152,77,205,77,
172,150,169,129,79,128,0,6,4,32,0,27,9,0};
int sixsize=7;
static int six[7]={17,177,170,242,169,19,148};
static int sixB[7]={136,141,85,79,149,200,41};
/* Test read/write together */
/* Later we test against pregenerated bitstreams */
oggpack_writeinit(&o);
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): ");
oggpack_reset(&o);
for(i=0;i<test2size;i++)
oggpack_write(&o,large[i],32);
buffer=oggpack_get_buffer(&o);
bytes=oggpack_bytes(&o);
oggpack_readinit(&r,buffer,bytes);
for(i=0;i<test2size;i++){
if(oggpack_look(&r,32)==-1)report("out of data. failed!");
if(oggpack_look(&r,32)!=large[i]){
fprintf(stderr,"%ld != %ld (%lx!=%lx):",oggpack_look(&r,32),large[i],
oggpack_look(&r,32),large[i]);
report("read incorrect value!\n");
}
oggpack_adv(&r,32);
}
if(oggpack_bytes(&r)!=bytes)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): ");
oggpack_readinit(&r,(unsigned char *)"\0\0\0\0\0\0\0\0",8);
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);
}
oggpack_readinit(&r,(unsigned char *)"\0\0\0\0\0\0\0\0",8);
if(oggpack_read(&r,30)!=0 || oggpack_read(&r,16)!=0){
fprintf(stderr,"failed 2; got -1 prematurely.\n");
exit(1);
}
if(oggpack_look(&r,18)!=0 ||
oggpack_look(&r,18)!=0){
fprintf(stderr,"failed 3; got -1 prematurely.\n");
exit(1);
}
if(oggpack_look(&r,19)!=-1 ||
oggpack_look(&r,19)!=-1){
fprintf(stderr,"failed; read past end without -1.\n");
exit(1);
}
if(oggpack_look(&r,32)!=-1 ||
oggpack_look(&r,32)!=-1){
fprintf(stderr,"failed; read past end without -1.\n");
exit(1);
}
oggpack_writeclear(&o);
fprintf(stderr,"ok.");
/* this is partly glassbox; we're mostly concerned about the allocation boundaries */
fprintf(stderr,"\nTesting aligned writecopies (LSb): ");
for(i=0;i<71;i++)
for(j=0;j<5;j++)
copytest(j*8,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=0;j<5;j++)
copytest(j*8,i);
fprintf(stderr,"ok. ");
fprintf(stderr,"\nTesting unaligned writecopies (LSb): ");
for(i=0;i<71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytest(j,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytest(j,i);
fprintf(stderr,"ok. \n");
/********** lazy, cut-n-paste retest with MSb packing ***********/
/* Test read/write together */
/* Later we test against pregenerated bitstreams */
oggpackB_writeinit(&o);
fprintf(stderr,"\nSmall preclipped packing (MSb): ");
cliptestB(testbuffer1,test1size,0,oneB,onesize);
fprintf(stderr,"ok.");
fprintf(stderr,"\nNull bit call (MSb): ");
cliptestB(testbuffer3,test3size,0,twoB,twosize);
fprintf(stderr,"ok.");
fprintf(stderr,"\nLarge preclipped packing (MSb): ");
cliptestB(testbuffer2,test2size,0,threeB,threesize);
fprintf(stderr,"ok.");
fprintf(stderr,"\n32 bit preclipped packing (MSb): ");
oggpackB_reset(&o);
for(i=0;i<test2size;i++)
oggpackB_write(&o,large[i],32);
buffer=oggpackB_get_buffer(&o);
bytes=oggpackB_bytes(&o);
oggpackB_readinit(&r,buffer,bytes);
for(i=0;i<test2size;i++){
if(oggpackB_look(&r,32)==-1)report("out of data. failed!");
if(oggpackB_look(&r,32)!=large[i]){
fprintf(stderr,"%ld != %ld (%lx!=%lx):",oggpackB_look(&r,32),large[i],
oggpackB_look(&r,32),large[i]);
report("read incorrect value!\n");
}
oggpackB_adv(&r,32);
}
if(oggpackB_bytes(&r)!=bytes)report("leftover bytes after read!\n");
fprintf(stderr,"ok.");
fprintf(stderr,"\nSmall unclipped packing (MSb): ");
cliptestB(testbuffer1,test1size,7,fourB,foursize);
fprintf(stderr,"ok.");
fprintf(stderr,"\nLarge unclipped packing (MSb): ");
cliptestB(testbuffer2,test2size,17,fiveB,fivesize);
fprintf(stderr,"ok.");
fprintf(stderr,"\nSingle bit unclipped packing (MSb): ");
cliptestB(testbuffer3,test3size,1,sixB,sixsize);
fprintf(stderr,"ok.");
fprintf(stderr,"\nTesting read past end (MSb): ");
oggpackB_readinit(&r,(unsigned char *)"\0\0\0\0\0\0\0\0",8);
for(i=0;i<64;i++){
if(oggpackB_read(&r,1)!=0){
fprintf(stderr,"failed; got -1 prematurely.\n");
exit(1);
}
}
if(oggpackB_look(&r,1)!=-1 ||
oggpackB_read(&r,1)!=-1){
fprintf(stderr,"failed; read past end without -1.\n");
exit(1);
}
oggpackB_readinit(&r,(unsigned char *)"\0\0\0\0\0\0\0\0",8);
if(oggpackB_read(&r,30)!=0 || oggpackB_read(&r,16)!=0){
fprintf(stderr,"failed 2; got -1 prematurely.\n");
exit(1);
}
if(oggpackB_look(&r,18)!=0 ||
oggpackB_look(&r,18)!=0){
fprintf(stderr,"failed 3; got -1 prematurely.\n");
exit(1);
}
if(oggpackB_look(&r,19)!=-1 ||
oggpackB_look(&r,19)!=-1){
fprintf(stderr,"failed; read past end without -1.\n");
exit(1);
}
if(oggpackB_look(&r,32)!=-1 ||
oggpackB_look(&r,32)!=-1){
fprintf(stderr,"failed; read past end without -1.\n");
exit(1);
}
fprintf(stderr,"ok.");
oggpackB_writeclear(&o);
/* this is partly glassbox; we're mostly concerned about the allocation boundaries */
fprintf(stderr,"\nTesting aligned writecopies (MSb): ");
for(i=0;i<71;i++)
for(j=0;j<5;j++)
copytestB(j*8,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=0;j<5;j++)
copytestB(j*8,i);
fprintf(stderr,"ok. ");
fprintf(stderr,"\nTesting unaligned writecopies (MSb): ");
for(i=0;i<71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytestB(j,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytestB(j,i);
fprintf(stderr,"ok. \n\n");
return(0);
}
#endif /* _V_SELFTEST */
#undef BUFFER_INCREMENT
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