Initial revision

svn path=/trunk/ogg/; revision=618

3 files changed, 2072 insertions, 0 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..ba76e64
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,16 @@
+## Process this file with automake to produce Makefile.in
+
+AUTOMAKE_OPTIONS = foreign
+
+INCLUDES = -I$(top_srcdir)/include
+
+lib_LTLIBRARIES = libogg.la
+
+libogg_la_SOURCES = framing.c bitwise.c
+libogg_la_LDFLAGS = -version-info 1:0:0
+
+debug:
+	$(MAKE) all CFLAGS="@DEBUG@"
+
+profile:
+	$(MAKE) all CFLAGS="@PROFILE@"
diff --git a/src/bitwise.c b/src/bitwise.c
new file mode 100644
index 0000000..cf2a237
--- /dev/null
+++ b/src/bitwise.c
@@ -0,0 +1,434 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE.  *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
+ * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE.    *
+ * PLEASE READ THESE TERMS DISTRIBUTING.                            *
+ *                                                                  *
+ * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000             *
+ * by Monty <monty@xiph.org> and The XIPHOPHORUS Company            *
+ * http://www.xiph.org/                                             *
+ *                                                                  *
+ ********************************************************************
+
+  function: packing variable sized words into an octet stream
+  last mod: $Id: bitwise.c,v 1.1 2000/09/03 05:54:28 jack Exp $
+
+ ********************************************************************/
+
+/* 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 <ogg/ogg.h>
+
+#define BUFFER_INCREMENT 256
+
+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 };
+
+void _oggpack_writeinit(oggpack_buffer *b){
+  memset(b,0,sizeof(oggpack_buffer));
+  b->ptr=b->buffer=malloc(BUFFER_INCREMENT);
+  b->buffer[0]='\0';
+  b->storage=BUFFER_INCREMENT;
+}
+
+void _oggpack_reset(oggpack_buffer *b){
+  b->ptr=b->buffer;
+  b->buffer[0]=0;
+  b->endbit=b->endbyte=0;
+}
+
+void _oggpack_writeclear(oggpack_buffer *b){
+  free(b->buffer);
+  memset(b,0,sizeof(oggpack_buffer));
+}
+
+void _oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){
+  memset(b,0,sizeof(oggpack_buffer));
+  b->buffer=b->ptr=buf;
+  b->storage=bytes;
+}
+
+/* Takes only up to 32 bits. */
+void _oggpack_write(oggpack_buffer *b,unsigned long value,int bits){
+  if(b->endbyte+4>=b->storage){
+    b->buffer=realloc(b->buffer,b->storage+BUFFER_INCREMENT);
+    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]=value>>(8-b->endbit);  
+    if(bits>=16){
+      b->ptr[2]=value>>(16-b->endbit);  
+      if(bits>=24){
+	b->ptr[3]=value>>(24-b->endbit);  
+	if(bits>=32){
+	  if(b->endbit)
+	    b->ptr[4]=value>>(32-b->endbit);
+	  else
+	    b->ptr[4]=0;
+	}
+      }
+    }
+  }
+
+  b->endbyte+=bits/8;
+  b->ptr+=bits/8;
+  b->endbit=bits&7;
+}
+
+/* Read in bits without advancing the bitptr; bits <= 32 */
+long _oggpack_look(oggpack_buffer *b,int bits){
+  unsigned long ret;
+  unsigned long m=mask[bits];
+
+  bits+=b->endbit;
+
+  if(b->endbyte+4>=b->storage){
+    /* not the main path */
+    if(b->endbyte+(bits-1)/8>=b->storage)return(-1);
+  }
+  
+  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);
+}
+
+long _oggpack_look1(oggpack_buffer *b){
+  if(b->endbyte>=b->storage)return(-1);
+  return((b->ptr[0]>>b->endbit)&1);
+}
+
+/* Read in bits without advancing the bitptr; bits <= 8 */
+/* we never return 'out of bits'; we'll handle it on _adv */
+long _oggpack_look_huff(oggpack_buffer *b,int bits){
+  unsigned long ret;
+  unsigned long m=mask[bits];
+  
+  bits+=b->endbit;
+  
+  ret=b->ptr[0]>>b->endbit;
+  if(bits>8){
+    ret|=b->ptr[1]<<(8-b->endbit);  
+  }
+  return(m&ret);
+}
+
+void _oggpack_adv(oggpack_buffer *b,int bits){
+  bits+=b->endbit;
+  b->ptr+=bits/8;
+  b->endbyte+=bits/8;
+  b->endbit=bits&7;
+}
+
+void _oggpack_adv1(oggpack_buffer *b){
+  if(++(b->endbit)>7){
+    b->endbit=0;
+    b->ptr++;
+    b->endbyte++;
+  }
+}
+
+/* have to check for overflow now. return -1 on overflow */
+int _oggpack_adv_huff(oggpack_buffer *b,int bits){
+  if(b->endbyte+(b->endbit+bits-1)/8>=b->storage)return(-1);
+  bits+=b->endbit;
+  b->ptr+=bits/8;
+  b->endbyte+=bits/8;
+  b->endbit=bits&7;
+  return 0;
+}
+
+/* bits <= 32 */
+long _oggpack_read(oggpack_buffer *b,int bits){
+  unsigned long ret;
+  unsigned long m=mask[bits];
+
+  bits+=b->endbit;
+
+  if(b->endbyte+4>=b->storage){
+    /* not the main path */
+    ret=-1;
+    if(b->endbyte+(bits-1)/8>=b->storage)goto overflow;
+  }
+  
+  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;
+  
+ overflow:
+
+  b->ptr+=bits/8;
+  b->endbyte+=bits/8;
+  b->endbit=bits&7;
+  return(ret);
+}
+
+long _oggpack_read1(oggpack_buffer *b){
+  unsigned long ret;
+  
+  if(b->endbyte>=b->storage){
+    /* not the main path */
+    ret=-1;
+    goto overflow;
+  }
+
+  ret=(b->ptr[0]>>b->endbit)&1;
+  
+ overflow:
+
+  b->endbit++;
+  if(b->endbit>7){
+    b->endbit=0;
+    b->ptr++;
+    b->endbyte++;
+  }
+  return(ret);
+}
+
+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);
+}
+
+unsigned char *_oggpack_buffer(oggpack_buffer *b){
+  return(b->buffer);
+}
+
+/* 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_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");
+}
+
+int main(void){
+  unsigned char *buffer;
+  long bytes,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 large[]=
+    {2136531625L,2137861823,56732452,131,3212421,12325343,34547562,12313212,
+       1233432,534,5,2146435231,14436467,7869299,76326614,167548585,
+       85525151,0,12321,1,2146528352};
+
+  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;
+
+  int onesize=33;
+  static int one[]={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[]={61,255,255,251,231,29};
+
+  int threesize=54;
+  static int three[]={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[]={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[]={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[]={17,177,170,242,169,19,148};
+
+  /* Test read/write together */
+  /* Later we test against pregenerated bitstreams */
+  _oggpack_writeinit(&o);
+
+  fprintf(stderr,"\nSmall preclipped packing: ");
+  cliptest(testbuffer1,test1size,0,one,onesize);
+  fprintf(stderr,"ok.");
+
+  fprintf(stderr,"\nNull bit call: ");
+  cliptest(testbuffer3,test3size,0,two,twosize);
+  fprintf(stderr,"ok.");
+
+  fprintf(stderr,"\nLarge preclipped packing: ");
+  cliptest(testbuffer2,test2size,0,three,threesize);
+  fprintf(stderr,"ok.");
+
+  fprintf(stderr,"\n32 bit preclipped packing: ");
+  _oggpack_reset(&o);
+  for(i=0;i<test2size;i++)
+    _oggpack_write(&o,large[i],32);
+  buffer=_oggpack_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: ");
+  cliptest(testbuffer1,test1size,7,four,foursize);
+  fprintf(stderr,"ok.");
+
+  fprintf(stderr,"\nLarge unclipped packing: ");
+  cliptest(testbuffer2,test2size,17,five,fivesize);
+  fprintf(stderr,"ok.");
+
+  fprintf(stderr,"\nSingle bit unclicpped packing: ");
+  cliptest(testbuffer3,test3size,1,six,sixsize);
+  fprintf(stderr,"ok.");
+
+  fprintf(stderr,"\nTesting read past end: ");
+  _oggpack_readinit(&r,"\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,"\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);
+  }
+  fprintf(stderr,"ok.\n\n");
+
+
+  return(0);
+}  
+#endif  /* _V_SELFTEST */
+
+#undef BUFFER_INCREMENT
diff --git a/src/framing.c b/src/framing.c
new file mode 100644
index 0000000..0069a3f
--- /dev/null
+++ b/src/framing.c
@@ -0,0 +1,1622 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE.  *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
+ * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE.    *
+ * PLEASE READ THESE TERMS DISTRIBUTING.                            *
+ *                                                                  *
+ * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000             *
+ * by Monty <monty@xiph.org> and the XIPHOPHORUS Company            *
+ * http://www.xiph.org/                                             *
+ *                                                                  *
+ ********************************************************************
+
+ function: code raw [Vorbis] packets into framed OggSquish stream and
+           decode Ogg streams back into raw packets
+ last mod: $Id: framing.c,v 1.1 2000/09/03 05:54:28 jack Exp $
+
+ note: The CRC code is directly derived from public domain code by
+ Ross Williams (ross@guest.adelaide.edu.au).  See docs/framing.html
+ for details.
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <ogg/ogg.h>
+
+/* A complete description of Ogg framing exists in docs/framing.html */
+
+int ogg_page_version(ogg_page *og){
+  return((int)(og->header[4]));
+}
+
+int ogg_page_continued(ogg_page *og){
+  return((int)(og->header[5]&0x01));
+}
+
+int ogg_page_bos(ogg_page *og){
+  return((int)(og->header[5]&0x02));
+}
+
+int ogg_page_eos(ogg_page *og){
+  return((int)(og->header[5]&0x04));
+}
+
+ogg_int64_t ogg_page_frameno(ogg_page *og){
+  unsigned char *page=og->header;
+  ogg_int64_t granulepos=page[13]&(0xff);
+  granulepos= (granulepos<<8)|(page[12]&0xff);
+  granulepos= (granulepos<<8)|(page[11]&0xff);
+  granulepos= (granulepos<<8)|(page[10]&0xff);
+  granulepos= (granulepos<<8)|(page[9]&0xff);
+  granulepos= (granulepos<<8)|(page[8]&0xff);
+  granulepos= (granulepos<<8)|(page[7]&0xff);
+  granulepos= (granulepos<<8)|(page[6]&0xff);
+  return(granulepos);
+}
+
+int ogg_page_serialno(ogg_page *og){
+  return(og->header[14] |
+	 (og->header[15]<<8) |
+	 (og->header[16]<<16) |
+	 (og->header[17]<<24));
+}
+ 
+int ogg_page_pageno(ogg_page *og){
+  return(og->header[18] |
+	 (og->header[19]<<8) |
+	 (og->header[20]<<16) |
+	 (og->header[21]<<24));
+}
+
+/* helper to initialize lookup for direct-table CRC */
+
+static ogg_uint32_t crc_lookup[256];
+static int crc_ready=0;
+
+static ogg_uint32_t _ogg_crc_entry(unsigned long index){
+  int           i;
+  unsigned long r;
+
+  r = index << 24;
+  for (i=0; i<8; i++)
+    if (r & 0x80000000UL)
+      r = (r << 1) ^ 0x04c11db7; /* The same as the ethernet generator
+				    polynomial, although we use an
+				    unreflected alg and an init/final
+				    of 0, not 0xffffffff */
+    else
+       r<<=1;
+ return (r & 0xffffffffUL);
+}
+
+/* mind this in threaded code; sync_init and stream_init call it.
+   It's thread safe only after the first time it returns */
+
+static void _ogg_crc_init(void){
+  if(!crc_ready){
+    /* initialize the crc_lookup table */
+    int i;
+    for (i=0;i<256;i++)
+      crc_lookup[i]=_ogg_crc_entry((unsigned long)i);
+    crc_ready=0;
+  }
+}
+
+/* init the encode/decode logical stream state */
+
+int ogg_stream_init(ogg_stream_state *os,int serialno){
+  if(os){
+    memset(os,0,sizeof(ogg_stream_state));
+    os->body_storage=16*1024;
+    os->body_data=malloc(os->body_storage*sizeof(char));
+
+    os->lacing_storage=1024;
+    os->lacing_vals=malloc(os->lacing_storage*sizeof(int));
+    os->granule_vals=malloc(os->lacing_storage*sizeof(ogg_int64_t));
+
+    /* initialize the crc_lookup table if not done */
+    _ogg_crc_init();
+
+    os->serialno=serialno;
+
+    return(0);
+  }
+  return(-1);
+} 
+
+/* _clear does not free os, only the non-flat storage within */
+int ogg_stream_clear(ogg_stream_state *os){
+  if(os){
+    if(os->body_data)free(os->body_data);
+    if(os->lacing_vals)free(os->lacing_vals);
+    if(os->granule_vals)free(os->granule_vals);
+
+    memset(os,0,sizeof(ogg_stream_state));    
+  }
+  return(0);
+} 
+
+int ogg_stream_destroy(ogg_stream_state *os){
+  if(os){
+    ogg_stream_clear(os);
+    free(os);
+  }
+  return(0);
+} 
+
+/* Helpers for ogg_stream_encode; this keeps the structure and
+   what's happening fairly clear */
+
+static void _os_body_expand(ogg_stream_state *os,int needed){
+  if(os->body_storage<=os->body_fill+needed){
+    os->body_storage+=(needed+1024);
+    os->body_data=realloc(os->body_data,os->body_storage);
+  }
+}
+
+static void _os_lacing_expand(ogg_stream_state *os,int needed){
+  if(os->lacing_storage<=os->lacing_fill+needed){
+    os->lacing_storage+=(needed+32);
+    os->lacing_vals=realloc(os->lacing_vals,os->lacing_storage*sizeof(int));
+    os->granule_vals=realloc(os->granule_vals,os->lacing_storage*sizeof(ogg_int64_t));
+  }
+}
+
+/* checksum the page */
+/* Direct table CRC; note that this will be faster in the future if we
+   perform the checksum silmultaneously with other copies */
+
+static void _os_checksum(ogg_page *og){
+  ogg_uint32_t crc_reg=0;
+  int i;
+
+  for(i=0;i<og->header_len;i++)
+    crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->header[i]];
+  for(i=0;i<og->body_len;i++)
+    crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->body[i]];
+  
+  og->header[22]=crc_reg&0xff;
+  og->header[23]=(crc_reg>>8)&0xff;
+  og->header[24]=(crc_reg>>16)&0xff;
+  og->header[25]=(crc_reg>>24)&0xff;
+}
+
+/* submit data to the internal buffer of the framing engine */
+int ogg_stream_packetin(ogg_stream_state *os,ogg_packet *op){
+  int lacing_vals=op->bytes/255+1,i;
+
+  if(os->body_returned){
+    /* advance packet data according to the body_returned pointer. We
+       had to keep it around to return a pointer into the buffer last
+       call */
+    
+    os->body_fill-=os->body_returned;
+    if(os->body_fill)
+      memmove(os->body_data,os->body_data+os->body_returned,
+	      os->body_fill*sizeof(char));
+    os->body_returned=0;
+  }
+ 
+  /* make sure we have the buffer storage */
+  _os_body_expand(os,op->bytes);
+  _os_lacing_expand(os,lacing_vals);
+
+  /* Copy in the submitted packet.  Yes, the copy is a waste; this is
+     the liability of overly clean abstraction for the time being.  It
+     will actually be fairly easy to eliminate the extra copy in the
+     future */
+
+  memcpy(os->body_data+os->body_fill,op->packet,op->bytes);
+  os->body_fill+=op->bytes;
+
+  /* Store lacing vals for this packet */
+  for(i=0;i<lacing_vals-1;i++){
+    os->lacing_vals[os->lacing_fill+i]=255;
+    os->granule_vals[os->lacing_fill+i]=os->granulepos;
+  }
+  os->lacing_vals[os->lacing_fill+i]=(op->bytes)%255;
+  os->granulepos=os->granule_vals[os->lacing_fill+i]=op->frameno;
+
+  /* flag the first segment as the beginning of the packet */
+  os->lacing_vals[os->lacing_fill]|= 0x100;
+
+  os->lacing_fill+=lacing_vals;
+
+  /* for the sake of completeness */
+  os->packetno++;
+
+  if(op->e_o_s)os->e_o_s=1;
+
+  return(0);
+}
+
+/* This will flush remaining packets into a page (returning nonzero),
+   even if there is not enough data to trigger a flush normally
+   (undersized page). If there are no packets or partial packets to
+   flush, ogg_stream_flush returns 0.  Note that ogg_stream_flush will
+   try to flush a normal sized page like ogg_stream_pageout; a call to
+   ogg_stream_flush does not gurantee that all packets have flushed.
+   Only a return value of 0 from ogg_stream_flush indicates all packet
+   data is flushed into pages.
+
+   ogg_stream_page will flush the last page in a stream even if it's
+   undersized; you almost certainly want to use ogg_stream_pageout
+   (and *not* ogg_stream_flush) unless you need to flush an undersized
+   page in the middle of a stream for some reason. */
+
+int ogg_stream_flush(ogg_stream_state *os,ogg_page *og){
+  int i;
+  int vals=0;
+  int maxvals=(os->lacing_fill>255?255:os->lacing_fill);
+  int bytes=0;
+  long acc=0;
+  ogg_int64_t granule_pos=os->granule_vals[0];
+
+  if(maxvals==0)return(0);
+  
+  /* construct a page */
+  /* decide how many segments to include */
+  
+  /* If this is the initial header case, the first page must only include
+     the initial header packet */
+  if(os->b_o_s==0){  /* 'initial header page' case */
+    granule_pos=0;
+    for(vals=0;vals<maxvals;vals++){
+      if((os->lacing_vals[vals]&0x0ff)<255){
+	vals++;
+	break;
+      }
+    }
+  }else{
+    for(vals=0;vals<maxvals;vals++){
+      if(acc>4096)break;
+      acc+=os->lacing_vals[vals]&0x0ff;
+      granule_pos=os->granule_vals[vals];
+    }
+  }
+  
+  /* construct the header in temp storage */
+  memcpy(os->header,"OggS",4);
+  
+  /* stream structure version */
+  os->header[4]=0x00;
+  
+  /* continued packet flag? */
+  os->header[5]=0x00;
+  if((os->lacing_vals[0]&0x100)==0)os->header[5]|=0x01;
+  /* first page flag? */
+  if(os->b_o_s==0)os->header[5]|=0x02;
+  /* last page flag? */
+  if(os->e_o_s && os->lacing_fill==vals)os->header[5]|=0x04;
+  os->b_o_s=1;
+
+  /* 64 bits of PCM position */
+  for(i=6;i<14;i++){
+    os->header[i]=(granule_pos&0xff);
+    granule_pos>>=8;
+  }
+
+  /* 32 bits of stream serial number */
+  {
+    long serialno=os->serialno;
+    for(i=14;i<18;i++){
+      os->header[i]=(serialno&0xff);
+      serialno>>=8;
+    }
+  }
+
+  /* 32 bits of page counter (we have both counter and page header
+     because this val can roll over) */
+  if(os->pageno==-1)os->pageno=0; /* because someone called
+				     stream_reset; this would be a
+				     strange thing to do in an
+				     encode stream, but it has
+				     plausible uses */
+  {
+    long pageno=os->pageno++;
+    for(i=18;i<22;i++){
+      os->header[i]=(pageno&0xff);
+      pageno>>=8;
+    }
+  }
+  
+  /* zero for computation; filled in later */
+  os->header[22]=0;
+  os->header[23]=0;
+  os->header[24]=0;
+  os->header[25]=0;
+  
+  /* segment table */
+  os->header[26]=vals&0xff;
+  for(i=0;i<vals;i++)
+    bytes+=os->header[i+27]=(os->lacing_vals[i]&0xff);
+  
+  /* set pointers in the ogg_page struct */
+  og->header=os->header;
+  og->header_len=os->header_fill=vals+27;
+  og->body=os->body_data+os->body_returned;
+  og->body_len=bytes;
+  
+  /* advance the lacing data and set the body_returned pointer */
+  
+  os->lacing_fill-=vals;
+  memmove(os->lacing_vals,os->lacing_vals+vals,os->lacing_fill*sizeof(int));
+  memmove(os->granule_vals,os->granule_vals+vals,os->lacing_fill*sizeof(ogg_int64_t));
+  os->body_returned+=bytes;
+  
+  /* calculate the checksum */
+  
+  _os_checksum(og);
+
+  /* done */
+  return(1);
+}
+
+
+/* This constructs pages from buffered packet segments.  The pointers
+returned are to static buffers; do not free. The returned buffers are
+good only until the next call (using the same ogg_stream_state) */
+
+int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og){
+
+  if((os->e_o_s&&os->lacing_fill) ||          /* 'were done, now flush' case */
+     os->body_fill-os->body_returned > 4096 ||/* 'page nominal size' case */
+     os->lacing_fill>=255 ||                  /* 'segment table full' case */
+     (os->lacing_fill&&!os->b_o_s)){          /* 'initial header page' case */
+        
+    return(ogg_stream_flush(os,og));
+  }
+  
+  /* not enough data to construct a page and not end of stream */
+  return(0);
+}
+
+int ogg_stream_eof(ogg_stream_state *os){
+  return os->e_o_s;
+}
+
+/* DECODING PRIMITIVES: packet streaming layer **********************/
+
+/* This has two layers to place more of the multi-serialno and paging
+   control in the application's hands.  First, we expose a data buffer
+   using ogg_sync_buffer().  The app either copies into the
+   buffer, or passes it directly to read(), etc.  We then call
+   ogg_sync_wrote() to tell how many bytes we just added.
+
+   Pages are returned (pointers into the buffer in ogg_sync_state)
+   by ogg_sync_pageout().  The page is then submitted to
+   ogg_stream_pagein() along with the appropriate
+   ogg_stream_state* (ie, matching serialno).  We then get raw
+   packets out calling ogg_stream_packetout() with a
+   ogg_stream_state.  See the 'frame-prog.txt' docs for details and
+   example code. */
+
+/* initialize the struct to a known state */
+int ogg_sync_init(ogg_sync_state *oy){
+  if(oy){
+    memset(oy,0,sizeof(ogg_sync_state));
+    _ogg_crc_init();
+  }
+  return(0);
+}
+
+/* clear non-flat storage within */
+int ogg_sync_clear(ogg_sync_state *oy){
+  if(oy){
+    if(oy->data)free(oy->data);
+    ogg_sync_init(oy);
+  }
+  return(0);
+}
+
+char *ogg_sync_buffer(ogg_sync_state *oy, long size){
+
+  /* first, clear out any space that has been previously returned */
+  if(oy->returned){
+    oy->fill-=oy->returned;
+    if(oy->fill>0)
+      memmove(oy->data,oy->data+oy->returned,
+	      (oy->fill)*sizeof(char));
+    oy->returned=0;
+  }
+
+  if(size>oy->storage-oy->fill){
+    /* We need to extend the internal buffer */
+    long newsize=size+oy->fill+4096; /* an extra page to be nice */
+
+    if(oy->data)
+      oy->data=realloc(oy->data,newsize);
+    else
+      oy->data=malloc(newsize);
+    oy->storage=newsize;
+  }
+
+  /* expose a segment at least as large as requested at the fill mark */
+  return((char *)oy->data+oy->fill);
+}
+
+int ogg_sync_wrote(ogg_sync_state *oy, long bytes){
+  if(oy->fill+bytes>oy->storage)return(-1);
+  oy->fill+=bytes;
+  return(0);
+}
+
+/* sync the stream.  This is meant to be useful for finding page
+   boundaries.
+
+   return values for this:
+  -n) skipped n bytes
+   0) page not ready; more data (no bytes skipped)
+   n) page synced at current location; page length n bytes
+   
+*/
+
+long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){
+  unsigned char *page=oy->data+oy->returned;
+  unsigned char *next;
+  long bytes=oy->fill-oy->returned;
+  
+  if(oy->headerbytes==0){
+    int headerbytes,i;
+    if(bytes<27)return(0); /* not enough for a header */
+    
+    /* verify capture pattern */
+    if(memcmp(page,"OggS",4))goto sync_fail;
+    
+    headerbytes=page[26]+27;
+    if(bytes<headerbytes)return(0); /* not enough for header + seg table */
+    
+    /* count up body length in the segment table */
+    
+    for(i=0;i<page[26];i++)
+      oy->bodybytes+=page[27+i];
+    oy->headerbytes=headerbytes;
+  }
+  
+  if(oy->bodybytes+oy->headerbytes>bytes)return(0);
+  
+  /* The whole test page is buffered.  Verify the checksum */
+  {
+    /* Grab the checksum bytes, set the header field to zero */
+    char chksum[4];
+    ogg_page log;
+    
+    memcpy(chksum,page+22,4);
+    memset(page+22,0,4);
+    
+    /* set up a temp page struct and recompute the checksum */
+    log.header=page;
+    log.header_len=oy->headerbytes;
+    log.body=page+oy->headerbytes;
+    log.body_len=oy->bodybytes;
+    _os_checksum(&log);
+    
+    /* Compare */
+    if(memcmp(chksum,page+22,4)){
+      /* D'oh.  Mismatch! Corrupt page (or miscapture and not a page
+	 at all) */
+      /* replace the computed checksum with the one actually read in */
+      memcpy(page+22,chksum,4);
+      
+      /* Bad checksum. Lose sync */
+      goto sync_fail;
+    }
+  }
+  
+  /* yes, have a whole page all ready to go */
+  {
+    unsigned char *page=oy->data+oy->returned;
+    long bytes;
+
+    if(og){
+      og->header=page;
+      og->header_len=oy->headerbytes;
+      og->body=page+oy->headerbytes;
+      og->body_len=oy->bodybytes;
+    }
+
+    oy->unsynced=0;
+    oy->returned+=(bytes=oy->headerbytes+oy->bodybytes);
+    oy->headerbytes=0;
+    oy->bodybytes=0;
+    return(bytes);
+  }
+  
+ sync_fail:
+  
+  oy->headerbytes=0;
+  oy->bodybytes=0;
+  
+  /* search for possible capture */
+  next=memchr(page+1,'O',bytes-1);
+  if(!next)
+    next=oy->data+oy->fill;
+
+  oy->returned=next-oy->data;
+  return(-(next-page));
+}
+
+/* sync the stream and get a page.  Keep trying until we find a page.
+   Supress 'sync errors' after reporting the first.
+
+   return values:
+   -1) recapture (hole in data)
+    0) need more data
+    1) page returned
+
+   Returns pointers into buffered data; invalidated by next call to
+   _stream, _clear, _init, or _buffer */
+
+int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){
+
+  /* all we need to do is verify a page at the head of the stream
+     buffer.  If it doesn't verify, we look for the next potential
+     frame */
+
+  while(1){
+    long ret=ogg_sync_pageseek(oy,og);
+    if(ret>0){
+      /* have a page */
+      return(1);
+    }
+    if(ret==0){
+      /* need more data */
+      return(0);
+    }
+    
+    /* head did not start a synced page... skipped some bytes */
+    if(!oy->unsynced){
+      oy->unsynced=1;
+      return(-1);
+    }
+
+    /* loop. keep looking */
+
+  }
+}
+
+/* add the incoming page to the stream state; we decompose the page
+   into packet segments here as well. */
+
+int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){
+  unsigned char *header=og->header;
+  unsigned char *body=og->body;
+  long           bodysize=og->body_len;
+  int            segptr=0;
+
+  int version=ogg_page_version(og);
+  int continued=ogg_page_continued(og);
+  int bos=ogg_page_bos(og);
+  int eos=ogg_page_eos(og);
+  ogg_int64_t granulepos=ogg_page_frameno(og);
+  int serialno=ogg_page_serialno(og);
+  int pageno=ogg_page_pageno(og);
+  int segments=header[26];
+  
+  /* clean up 'returned data' */
+  {
+    long lr=os->lacing_returned;
+    long br=os->body_returned;
+
+    /* body data */
+    if(br){
+      os->body_fill-=br;
+      if(os->body_fill)
+	memmove(os->body_data,os->body_data+br,os->body_fill);
+      os->body_returned=0;
+    }
+
+    if(lr){
+      /* segment table */
+      if(os->lacing_fill-lr){
+	memmove(os->lacing_vals,os->lacing_vals+lr,
+		(os->lacing_fill-lr)*sizeof(int));
+	memmove(os->granule_vals,os->granule_vals+lr,
+		(os->lacing_fill-lr)*sizeof(ogg_int64_t));
+      }
+      os->lacing_fill-=lr;
+      os->lacing_packet-=lr;
+      os->lacing_returned=0;
+    }
+  }
+
+  /* check the serial number */
+  if(serialno!=os->serialno)return(-1);
+  if(version>0)return(-1);
+
+  _os_lacing_expand(os,segments+1);
+
+  /* are we in sequence? */
+  if(pageno!=os->pageno){
+    int i;
+
+    /* unroll previous partial packet (if any) */
+    for(i=os->lacing_packet;i<os->lacing_fill;i++)
+      os->body_fill-=os->lacing_vals[i]&0xff;
+    os->lacing_fill=os->lacing_packet;
+
+    /* make a note of dropped data in segment table */
+    if(os->pageno!=-1){
+      os->lacing_vals[os->lacing_fill++]=0x400;
+      os->lacing_packet++;
+    }
+
+    /* are we a 'continued packet' page?  If so, we'll need to skip
+       some segments */
+    if(continued){
+      bos=0;
+      for(;segptr<segments;segptr++){
+	int val=header[27+segptr];
+	body+=val;
+	bodysize-=val;
+	if(val<255){
+	  segptr++;
+	  break;
+	}
+      }
+    }
+  }
+  
+  if(bodysize){
+    _os_body_expand(os,bodysize);
+    memcpy(os->body_data+os->body_fill,body,bodysize);
+    os->body_fill+=bodysize;
+  }
+
+  {
+    int saved=-1;
+    while(segptr<segments){
+      int val=header[27+segptr];
+      os->lacing_vals[os->lacing_fill]=val;
+      os->granule_vals[os->lacing_fill]=-1;
+      
+      if(bos){
+	os->lacing_vals[os->lacing_fill]|=0x100;
+	bos=0;
+      }
+      
+      if(val<255)saved=os->lacing_fill;
+      
+      os->lacing_fill++;
+      segptr++;
+      
+      if(val<255)os->lacing_packet=os->lacing_fill;
+    }
+  
+    /* set the granulepos on the last granuleval of the last full packet */
+    if(saved!=-1){
+      os->granule_vals[saved]=granulepos;
+    }
+
+  }
+
+  if(eos){
+    os->e_o_s=1;
+    if(os->lacing_fill>0)
+      os->lacing_vals[os->lacing_fill-1]|=0x200;
+  }
+
+  os->pageno=pageno+1;
+
+  return(0);
+}
+
+/* clear things to an initial state.  Good to call, eg, before seeking */
+int ogg_sync_reset(ogg_sync_state *oy){
+  oy->fill=0;
+  oy->returned=0;
+  oy->unsynced=0;
+  oy->headerbytes=0;
+  oy->bodybytes=0;
+  return(0);
+}
+
+int ogg_stream_reset(ogg_stream_state *os){
+  os->body_fill=0;
+  os->body_returned=0;
+
+  os->lacing_fill=0;
+  os->lacing_packet=0;
+  os->lacing_returned=0;
+
+  os->header_fill=0;
+
+  os->e_o_s=0;
+  os->b_o_s=0;
+  os->pageno=-1;
+  os->packetno=0;
+  os->granulepos=0;
+
+  return(0);
+}
+
+int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){
+
+  /* The last part of decode. We have the stream broken into packet
+     segments.  Now we need to group them into packets (or return the
+     out of sync markers) */
+
+  int ptr=os->lacing_returned;
+
+  if(os->lacing_packet<=ptr)return(0);
+
+  if(os->lacing_vals[ptr]&0x400){
+    /* We lost sync here; let the app know */
+    os->lacing_returned++;
+
+    /* we need to tell the codec there's a gap; it might need to
+       handle previous packet dependencies. */
+    os->packetno++;
+    return(-1);
+  }
+
+  /* Gather the whole packet. We'll have no holes or a partial packet */
+  {
+    int size=os->lacing_vals[ptr]&0xff;
+    int bytes=0;
+
+    op->packet=os->body_data+os->body_returned;
+    op->e_o_s=os->lacing_vals[ptr]&0x200; /* last packet of the stream? */
+    op->b_o_s=os->lacing_vals[ptr]&0x100; /* first packet of the stream? */
+    bytes+=size;
+
+    while(size==255){
+      int val=os->lacing_vals[++ptr];
+      size=val&0xff;
+      if(val&0x200)op->e_o_s=0x200;
+      bytes+=size;
+    }
+
+    op->packetno=os->packetno;
+    op->frameno=os->granule_vals[ptr];
+    op->bytes=bytes;
+
+    os->body_returned+=bytes;
+    os->lacing_returned=ptr+1;
+  }
+  os->packetno++;
+  return(1);
+}
+
+#ifdef _V_SELFTEST
+#include <stdio.h>
+
+ogg_stream_state os_en, os_de;
+ogg_sync_state oy;
+
+void checkpacket(ogg_packet *op,int len, int no, int pos){
+  long j;
+  static int sequence=0;
+  static int lastno=0;
+
+  if(op->bytes!=len){
+    fprintf(stderr,"incorrect packet length!\n");
+    exit(1);
+  }
+  if(op->frameno!=pos){
+    fprintf(stderr,"incorrect packet position!\n");
+    exit(1);
+  }
+
+  /* packet number just follows sequence/gap; adjust the input number
+     for that */
+  if(no==0){
+    sequence=0;
+  }else{
+    sequence++;
+    if(no>lastno+1)
+      sequence++;
+  }
+  lastno=no;
+  if(op->packetno!=sequence){
+    fprintf(stderr,"incorrect packet sequence %ld != %d\n",
+	    (long)(op->packetno),sequence);
+    exit(1);
+  }
+
+  /* Test data */
+  for(j=0;j<op->bytes;j++)
+    if(op->packet[j]!=((j+no)&0xff)){
+      fprintf(stderr,"body data mismatch (1) at pos %ld: %x!=%lx!\n\n",
+	      j,op->packet[j],(j+no)&0xff);
+      exit(1);
+    }
+}
+
+void check_page(unsigned char *data,const int *header,ogg_page *og){
+  long j;
+  /* Test data */
+  for(j=0;j<og->body_len;j++)
+    if(og->body[j]!=data[j]){
+      fprintf(stderr,"body data mismatch (2) at pos %ld: %x!=%x!\n\n",
+	      j,data[j],og->body[j]);
+      exit(1);
+    }
+
+  /* Test header */
+  for(j=0;j<og->header_len;j++){
+    if(og->header[j]!=header[j]){
+      fprintf(stderr,"header content mismatch at pos %ld:\n",j);
+      for(j=0;j<header[26]+27;j++)
+	fprintf(stderr," (%ld)%02x:%02x",j,header[j],og->header[j]);
+      fprintf(stderr,"\n");
+      exit(1);
+    }
+  }
+  if(og->header_len!=header[26]+27){
+    fprintf(stderr,"header length incorrect! (%ld!=%d)\n",
+	    og->header_len,header[26]+27);
+    exit(1);
+  }
+}
+
+void print_header(ogg_page *og){
+  int j;
+  fprintf(stderr,"\nHEADER:\n");
+  fprintf(stderr,"  capture: %c %c %c %c  version: %d  flags: %x\n",
+	  og->header[0],og->header[1],og->header[2],og->header[3],
+	  (int)og->header[4],(int)og->header[5]);
+
+  fprintf(stderr,"  granulepos: %d  serialno: %d  pageno: %d\n",
+	  (og->header[9]<<24)|(og->header[8]<<16)|
+	  (og->header[7]<<8)|og->header[6],
+	  (og->header[17]<<24)|(og->header[16]<<16)|
+	  (og->header[15]<<8)|og->header[14],
+	  (og->header[21]<<24)|(og->header[20]<<16)|
+	  (og->header[19]<<8)|og->header[18]);
+
+  fprintf(stderr,"  checksum: %02x:%02x:%02x:%02x\n  segments: %d (",
+	  (int)og->header[22],(int)og->header[23],
+	  (int)og->header[24],(int)og->header[25],
+	  (int)og->header[26]);
+
+  for(j=27;j<og->header_len;j++)
+    fprintf(stderr,"%d ",(int)og->header[j]);
+  fprintf(stderr,")\n\n");
+}
+
+void copy_page(ogg_page *og){
+  unsigned char *temp=malloc(og->header_len);
+  memcpy(temp,og->header,og->header_len);
+  og->header=temp;
+
+  temp=malloc(og->body_len);
+  memcpy(temp,og->body,og->body_len);
+  og->body=temp;
+}
+
+void error(void){
+  fprintf(stderr,"error!\n");
+  exit(1);
+}
+
+/* 17 only */
+const int head1_0[] = {0x4f,0x67,0x67,0x53,0,0x06,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0x15,0xed,0xec,0x91,
+		       1,
+		       17};
+
+/* 17, 254, 255, 256, 500, 510, 600 byte, pad */
+const int head1_1[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0x59,0x10,0x6c,0x2c,
+		       1,
+		       17};
+const int head2_1[] = {0x4f,0x67,0x67,0x53,0,0x04,
+		       0x07,0x18,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0x89,0x33,0x85,0xce,
+		       13,
+		       254,255,0,255,1,255,245,255,255,0,
+		       255,255,90};
+
+/* nil packets; beginning,middle,end */
+const int head1_2[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0xff,0x7b,0x23,0x17,
+		       1,
+		       0};
+const int head2_2[] = {0x4f,0x67,0x67,0x53,0,0x04,
+		       0x07,0x28,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0x5c,0x3f,0x66,0xcb,
+		       17,
+		       17,254,255,0,0,255,1,0,255,245,255,255,0,
+		       255,255,90,0};
+
+/* large initial packet */
+const int head1_3[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0x01,0x27,0x31,0xaa,
+		       18,
+		       255,255,255,255,255,255,255,255,
+		       255,255,255,255,255,255,255,255,255,10};
+
+const int head2_3[] = {0x4f,0x67,0x67,0x53,0,0x04,
+		       0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0x7f,0x4e,0x8a,0xd2,
+		       4,
+		       255,4,255,0};
+
+
+/* continuing packet test */
+const int head1_4[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0xff,0x7b,0x23,0x17,
+		       1,
+		       0};
+
+const int head2_4[] = {0x4f,0x67,0x67,0x53,0,0x00,
+		       0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0x34,0x24,0xd5,0x29,
+		       17,
+		       255,255,255,255,255,255,255,255,
+		       255,255,255,255,255,255,255,255,255};
+
+const int head3_4[] = {0x4f,0x67,0x67,0x53,0,0x05,
+		       0x07,0x0c,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,2,0,0,0,
+		       0xc8,0xc3,0xcb,0xed,
+		       5,
+		       10,255,4,255,0};
+
+
+/* page with the 255 segment limit */
+const int head1_5[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0xff,0x7b,0x23,0x17,
+		       1,
+		       0};
+
+const int head2_5[] = {0x4f,0x67,0x67,0x53,0,0x00,
+		       0x07,0xfc,0x03,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0xed,0x2a,0x2e,0xa7,
+		       255,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10,10,
+		       10,10,10,10,10,10,10};
+
+const int head3_5[] = {0x4f,0x67,0x67,0x53,0,0x04,
+		       0x07,0x00,0x04,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,2,0,0,0,
+		       0x6c,0x3b,0x82,0x3d,
+		       1,
+		       50};
+
+
+/* packet that overspans over an entire page */
+const int head1_6[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0xff,0x7b,0x23,0x17,
+		       1,
+		       0};
+
+const int head2_6[] = {0x4f,0x67,0x67,0x53,0,0x00,
+		       0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0x3c,0xd9,0x4d,0x3f,
+		       17,
+		       100,255,255,255,255,255,255,255,255,
+		       255,255,255,255,255,255,255,255};
+
+const int head3_6[] = {0x4f,0x67,0x67,0x53,0,0x01,
+		       0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,2,0,0,0,
+		       0xbd,0xd5,0xb5,0x8b,
+		       17,
+		       255,255,255,255,255,255,255,255,
+		       255,255,255,255,255,255,255,255,255};
+
+const int head4_6[] = {0x4f,0x67,0x67,0x53,0,0x05,
+		       0x07,0x10,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,3,0,0,0,
+		       0xef,0xdd,0x88,0xde,
+		       7,
+		       255,255,75,255,4,255,0};
+
+/* packet that overspans over an entire page */
+const int head1_7[] = {0x4f,0x67,0x67,0x53,0,0x02,
+		       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,0,0,0,0,
+		       0xff,0x7b,0x23,0x17,
+		       1,
+		       0};
+
+const int head2_7[] = {0x4f,0x67,0x67,0x53,0,0x00,
+		       0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,1,0,0,0,
+		       0x3c,0xd9,0x4d,0x3f,
+		       17,
+		       100,255,255,255,255,255,255,255,255,
+		       255,255,255,255,255,255,255,255};
+
+const int head3_7[] = {0x4f,0x67,0x67,0x53,0,0x05,
+		       0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
+		       0x01,0x02,0x03,0x04,2,0,0,0,
+		       0xd4,0xe0,0x60,0xe5,
+		       1,0};
+
+void test_pack(const int *pl, const int **headers){
+  unsigned char *data=malloc(1024*1024); /* for scripted test cases only */
+  long inptr=0;
+  long outptr=0;
+  long deptr=0;
+  long depacket=0;
+  long granule_pos=7;
+  int i,j,packets,pageno=0,pageout=0;
+  int eosflag=0;
+  int bosflag=0;
+
+  ogg_stream_reset(&os_en);
+  ogg_stream_reset(&os_de);
+  ogg_sync_reset(&oy);
+
+  for(packets=0;;packets++)if(pl[packets]==-1)break;
+
+  for(i=0;i<packets;i++){
+    /* construct a test packet */
+    ogg_packet op;
+    int len=pl[i];
+    
+    op.packet=data+inptr;
+    op.bytes=len;
+    op.e_o_s=(pl[i+1]<0?1:0);
+    op.frameno=granule_pos;
+
+    granule_pos+=1024;
+
+    for(j=0;j<len;j++)data[inptr++]=i+j;
+
+    /* submit the test packet */
+    ogg_stream_packetin(&os_en,&op);
+
+    /* retrieve any finished pages */
+    {
+      ogg_page og;
+      
+      while(ogg_stream_pageout(&os_en,&og)){
+	/* We have a page.  Check it carefully */
+
+	fprintf(stderr,"%d, ",pageno);
+
+	if(headers[pageno]==NULL){
+	  fprintf(stderr,"coded too many pages!\n");
+	  exit(1);
+	}
+
+	check_page(data+outptr,headers[pageno],&og);
+
+	outptr+=og.body_len;
+	pageno++;
+
+	/* have a complete page; submit it to sync/decode */
+
+	{
+	  ogg_page og_de;
+	  ogg_packet op_de;
+	  char *buf=ogg_sync_buffer(&oy,og.header_len+og.body_len);
+	  memcpy(buf,og.header,og.header_len);
+	  memcpy(buf+og.header_len,og.body,og.body_len);
+	  ogg_sync_wrote(&oy,og.header_len+og.body_len);
+
+	  while(ogg_sync_pageout(&oy,&og_de)>0){
+	    /* got a page.  Happy happy.  Verify that it's good. */
+	    
+	    check_page(data+deptr,headers[pageout],&og_de);
+	    deptr+=og_de.body_len;
+	    pageout++;
+
+	    /* submit it to deconstitution */
+	    ogg_stream_pagein(&os_de,&og_de);
+
+	    /* packets out? */
+	    while(ogg_stream_packetout(&os_de,&op_de)>0){
+	      
+	      /* verify the packet! */
+	      /* check data */
+	      if(memcmp(data+depacket,op_de.packet,op_de.bytes)){
+		fprintf(stderr,"packet data mismatch in decode! pos=%ld\n",
+			depacket);
+		exit(1);
+	      }
+	      /* check bos flag */
+	      if(bosflag==0 && op_de.b_o_s==0){
+		fprintf(stderr,"b_o_s flag not set on packet!\n");
+		exit(1);
+	      }
+	      if(bosflag && op_de.b_o_s){
+		fprintf(stderr,"b_o_s flag incorrectly set on packet!\n");
+		exit(1);
+	      }
+	      bosflag=1;
+	      depacket+=op_de.bytes;
+	      
+	      /* check eos flag */
+	      if(eosflag){
+		fprintf(stderr,"Multiple decoded packets with eos flag!\n");
+		exit(1);
+	      }
+
+	      if(op_de.e_o_s)eosflag=1;
+
+	      /* check granulepos flag */
+	      if(op_de.frameno!=-1){
+		fprintf(stderr," granule:%ld ",(long)op_de.frameno);
+	      }
+	    }
+	  }
+	}
+      }
+    }
+  }
+  free(data);
+  if(headers[pageno]!=NULL){
+    fprintf(stderr,"did not write last page!\n");
+    exit(1);
+  }
+  if(headers[pageout]!=NULL){
+    fprintf(stderr,"did not decode last page!\n");
+    exit(1);
+  }
+  if(inptr!=outptr){
+    fprintf(stderr,"encoded page data incomplete!\n");
+    exit(1);
+  }
+  if(inptr!=deptr){
+    fprintf(stderr,"decoded page data incomplete!\n");
+    exit(1);
+  }
+  if(inptr!=depacket){
+    fprintf(stderr,"decoded packet data incomplete!\n");
+    exit(1);
+  }
+  if(!eosflag){
+    fprintf(stderr,"Never got a packet with EOS set!\n");
+    exit(1);
+  }
+  fprintf(stderr,"ok.\n");
+}
+
+int main(void){
+
+  ogg_stream_init(&os_en,0x04030201);
+  ogg_stream_init(&os_de,0x04030201);
+  ogg_sync_init(&oy);
+
+  /* Exercise each code path in the framing code.  Also verify that
+     the checksums are working.  */
+
+  {
+    /* 17 only */
+    const int packets[]={17, -1};
+    const int *headret[]={head1_0,NULL};
+    
+    fprintf(stderr,"testing single page encoding... ");
+    test_pack(packets,headret);
+  }
+
+  {
+    /* 17, 254, 255, 256, 500, 510, 600 byte, pad */
+    const int packets[]={17, 254, 255, 256, 500, 510, 600, -1};
+    const int *headret[]={head1_1,head2_1,NULL};
+    
+    fprintf(stderr,"testing basic page encoding... ");
+    test_pack(packets,headret);
+  }
+
+  {
+    /* nil packets; beginning,middle,end */
+    const int packets[]={0,17, 254, 255, 0, 256, 0, 500, 510, 600, 0, -1};
+    const int *headret[]={head1_2,head2_2,NULL};
+    
+    fprintf(stderr,"testing basic nil packets... ");
+    test_pack(packets,headret);
+  }
+
+  {
+    /* large initial packet */
+    const int packets[]={4345,259,255,-1};
+    const int *headret[]={head1_3,head2_3,NULL};
+    
+    fprintf(stderr,"testing initial-packet lacing > 4k... ");
+    test_pack(packets,headret);
+  }
+
+  {
+    /* continuing packet test */
+    const int packets[]={0,4345,259,255,-1};
+    const int *headret[]={head1_4,head2_4,head3_4,NULL};
+    
+    fprintf(stderr,"testing single packet page span... ");
+    test_pack(packets,headret);
+  }
+
+  /* page with the 255 segment limit */
+  {
+
+    const int packets[]={0,10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,10,
+		   10,10,10,10,10,10,10,50,-1};
+    const int *headret[]={head1_5,head2_5,head3_5,NULL};
+    
+    fprintf(stderr,"testing max packet segments... ");
+    test_pack(packets,headret);
+  }
+
+  {
+    /* packet that overspans over an entire page */
+    const int packets[]={0,100,9000,259,255,-1};
+    const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL};
+    
+    fprintf(stderr,"testing very large packets... ");
+    test_pack(packets,headret);
+  }
+
+  {
+    /* term only page.  why not? */
+    const int packets[]={0,100,4080,-1};
+    const int *headret[]={head1_7,head2_7,head3_7,NULL};
+    
+    fprintf(stderr,"testing zero data page (1 nil packet)... ");
+    test_pack(packets,headret);
+  }
+
+
+
+  {
+    /* build a bunch of pages for testing */
+    unsigned char *data=malloc(1024*1024);
+    int pl[]={0,100,4079,2956,2057,76,34,912,0,234,1000,1000,1000,300,-1};
+    int inptr=0,i,j;
+    ogg_page og[5];
+    
+    ogg_stream_reset(&os_en);
+
+    for(i=0;pl[i]!=-1;i++){
+      ogg_packet op;
+      int len=pl[i];
+      
+      op.packet=data+inptr;
+      op.bytes=len;
+      op.e_o_s=(pl[i+1]<0?1:0);
+      op.frameno=(i+1)*1000;
+
+      for(j=0;j<len;j++)data[inptr++]=i+j;
+      ogg_stream_packetin(&os_en,&op);
+    }
+
+    free(data);
+
+    /* retrieve finished pages */
+    for(i=0;i<5;i++){
+      if(ogg_stream_pageout(&os_en,&og[i])==0){
+	fprintf(stderr,"Too few pages output building sync tests!\n");
+	exit(1);
+      }
+      copy_page(&og[i]);
+    }
+
+    /* Test lost pages on pagein/packetout: no rollback */
+    {
+      ogg_page temp;
+      ogg_packet test;
+
+      fprintf(stderr,"Testing loss of pages... ");
+
+      ogg_sync_reset(&oy);
+      ogg_stream_reset(&os_de);
+      for(i=0;i<5;i++){
+	memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header,
+	       og[i].header_len);
+	ogg_sync_wrote(&oy,og[i].header_len);
+	memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len);
+	ogg_sync_wrote(&oy,og[i].body_len);
+      }
+
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+      ogg_sync_pageout(&oy,&temp);
+      /* skip */
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+
+      /* do we get the expected results/packets? */
+      
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,0,0,0);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,100,1,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,4079,2,3000);
+      if(ogg_stream_packetout(&os_de,&test)!=-1){
+	fprintf(stderr,"Error: loss of page did not return error\n");
+	exit(1);
+      }
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,76,5,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,34,6,-1);
+      fprintf(stderr,"ok.\n");
+    }
+
+    /* Test lost pages on pagein/packetout: rollback with continuation */
+    {
+      ogg_page temp;
+      ogg_packet test;
+
+      fprintf(stderr,"Testing loss of pages (rollback required)... ");
+
+      ogg_sync_reset(&oy);
+      ogg_stream_reset(&os_de);
+      for(i=0;i<5;i++){
+	memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header,
+	       og[i].header_len);
+	ogg_sync_wrote(&oy,og[i].header_len);
+	memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len);
+	ogg_sync_wrote(&oy,og[i].body_len);
+      }
+
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+      ogg_sync_pageout(&oy,&temp);
+      /* skip */
+      ogg_sync_pageout(&oy,&temp);
+      ogg_stream_pagein(&os_de,&temp);
+
+      /* do we get the expected results/packets? */
+      
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,0,0,0);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,100,1,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,4079,2,3000);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,2956,3,4000);
+      if(ogg_stream_packetout(&os_de,&test)!=-1){
+	fprintf(stderr,"Error: loss of page did not return error\n");
+	exit(1);
+      }
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,300,13,14000);
+      fprintf(stderr,"ok.\n");
+    }
+    
+    /* the rest only test sync */
+    {
+      ogg_page og_de;
+      /* Test fractional page inputs: incomplete capture */
+      fprintf(stderr,"Testing sync on partial inputs... ");
+      ogg_sync_reset(&oy);
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
+	     3);
+      ogg_sync_wrote(&oy,3);
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      
+      /* Test fractional page inputs: incomplete fixed header */
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+3,
+	     20);
+      ogg_sync_wrote(&oy,20);
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      
+      /* Test fractional page inputs: incomplete header */
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+23,
+	     5);
+      ogg_sync_wrote(&oy,5);
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      
+      /* Test fractional page inputs: incomplete body */
+      
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+28,
+	     og[1].header_len-28);
+      ogg_sync_wrote(&oy,og[1].header_len-28);
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,1000);
+      ogg_sync_wrote(&oy,1000);
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body+1000,
+	     og[1].body_len-1000);
+      ogg_sync_wrote(&oy,og[1].body_len-1000);
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+      
+      fprintf(stderr,"ok.\n");
+    }
+
+    /* Test fractional page inputs: page + incomplete capture */
+    {
+      ogg_page og_de;
+      fprintf(stderr,"Testing sync on 1+partial inputs... ");
+      ogg_sync_reset(&oy); 
+
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
+	     og[1].header_len);
+      ogg_sync_wrote(&oy,og[1].header_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
+	     og[1].body_len);
+      ogg_sync_wrote(&oy,og[1].body_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
+	     20);
+      ogg_sync_wrote(&oy,20);
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+20,
+	     og[1].header_len-20);
+      ogg_sync_wrote(&oy,og[1].header_len-20);
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
+	     og[1].body_len);
+      ogg_sync_wrote(&oy,og[1].body_len);
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+
+      fprintf(stderr,"ok.\n");
+    }
+    
+    /* Test recapture: garbage + page */
+    {
+      ogg_page og_de;
+      fprintf(stderr,"Testing search for capture... ");
+      ogg_sync_reset(&oy); 
+      
+      /* 'garbage' */
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
+	     og[1].body_len);
+      ogg_sync_wrote(&oy,og[1].body_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
+	     og[1].header_len);
+      ogg_sync_wrote(&oy,og[1].header_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
+	     og[1].body_len);
+      ogg_sync_wrote(&oy,og[1].body_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
+	     20);
+      ogg_sync_wrote(&oy,20);
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+
+      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header+20,
+	     og[2].header_len-20);
+      ogg_sync_wrote(&oy,og[2].header_len-20);
+      memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body,
+	     og[2].body_len);
+      ogg_sync_wrote(&oy,og[2].body_len);
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+
+      fprintf(stderr,"ok.\n");
+    }
+
+    /* Test recapture: page + garbage + page */
+    {
+      ogg_page og_de;
+      fprintf(stderr,"Testing recapture... ");
+      ogg_sync_reset(&oy); 
+
+      memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
+	     og[1].header_len);
+      ogg_sync_wrote(&oy,og[1].header_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
+	     og[1].body_len);
+      ogg_sync_wrote(&oy,og[1].body_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
+	     og[2].header_len);
+      ogg_sync_wrote(&oy,og[2].header_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
+	     og[2].header_len);
+      ogg_sync_wrote(&oy,og[2].header_len);
+
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+
+      memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body,
+	     og[2].body_len-5);
+      ogg_sync_wrote(&oy,og[2].body_len-5);
+
+      memcpy(ogg_sync_buffer(&oy,og[3].header_len),og[3].header,
+	     og[3].header_len);
+      ogg_sync_wrote(&oy,og[3].header_len);
+
+      memcpy(ogg_sync_buffer(&oy,og[3].body_len),og[3].body,
+	     og[3].body_len);
+      ogg_sync_wrote(&oy,og[3].body_len);
+
+      if(ogg_sync_pageout(&oy,&og_de)>0)error();
+      if(ogg_sync_pageout(&oy,&og_de)<=0)error();
+
+      fprintf(stderr,"ok.\n");
+    }
+  }    
+
+  return(0);
+}
+
+#endif
+
+
+
+