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-rw-r--r--ogg/src/bitwise.c1088
1 files changed, 1088 insertions, 0 deletions
diff --git a/ogg/src/bitwise.c b/ogg/src/bitwise.c
new file mode 100644
index 0000000..fa2b572
--- /dev/null
+++ b/ogg/src/bitwise.c
@@ -0,0 +1,1088 @@
+/********************************************************************
+ * *
+ * 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: $Id$
+
+ ********************************************************************/
+
+/* 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
generated by cgit v1.1 at 2024-11-04 21:58:01 +0000