From 8f3471999e929bb99116fac52b94d572c42ba15e Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Wed, 29 Sep 2021 22:52:15 +0200
Subject: Squashed 'ogg/' content from commit 4380566a4

git-subtree-dir: ogg
git-subtree-split: 4380566a44b8d5e85ad511c9c17eb04197863ec5
---
 src/framing.c | 2140 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 2140 insertions(+)
 create mode 100644 src/framing.c

(limited to 'src/framing.c')

diff --git a/src/framing.c b/src/framing.c
new file mode 100644
index 0000000..79fc715
--- /dev/null
+++ b/src/framing.c
@@ -0,0 +1,2140 @@
+/********************************************************************
+ *                                                                  *
+ * 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 1994-2010             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: code raw packets into framed OggSquish stream and
+           decode Ogg streams back into raw packets
+ last mod: $Id$
+
+ 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 <limits.h>
+#include <string.h>
+#include <ogg/ogg.h>
+
+/* A complete description of Ogg framing exists in docs/framing.html */
+
+int ogg_page_version(const ogg_page *og){
+  return((int)(og->header[4]));
+}
+
+int ogg_page_continued(const ogg_page *og){
+  return((int)(og->header[5]&0x01));
+}
+
+int ogg_page_bos(const ogg_page *og){
+  return((int)(og->header[5]&0x02));
+}
+
+int ogg_page_eos(const ogg_page *og){
+  return((int)(og->header[5]&0x04));
+}
+
+ogg_int64_t ogg_page_granulepos(const 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(const ogg_page *og){
+  return(og->header[14] |
+         (og->header[15]<<8) |
+         (og->header[16]<<16) |
+         (og->header[17]<<24));
+}
+
+long ogg_page_pageno(const ogg_page *og){
+  return(og->header[18] |
+         (og->header[19]<<8) |
+         (og->header[20]<<16) |
+         (og->header[21]<<24));
+}
+
+
+
+/* returns the number of packets that are completed on this page (if
+   the leading packet is begun on a previous page, but ends on this
+   page, it's counted */
+
+/* NOTE:
+   If a page consists of a packet begun on a previous page, and a new
+   packet begun (but not completed) on this page, the return will be:
+     ogg_page_packets(page)   ==1,
+     ogg_page_continued(page) !=0
+
+   If a page happens to be a single packet that was begun on a
+   previous page, and spans to the next page (in the case of a three or
+   more page packet), the return will be:
+     ogg_page_packets(page)   ==0,
+     ogg_page_continued(page) !=0
+*/
+
+int ogg_page_packets(const ogg_page *og){
+  int i,n=og->header[26],count=0;
+  for(i=0;i<n;i++)
+    if(og->header[27+i]<255)count++;
+  return(count);
+}
+
+
+#if 0
+/* helper to initialize lookup for direct-table CRC (illustrative; we
+   use the static init below) */
+
+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);
+}
+#endif
+
+static const ogg_uint32_t crc_lookup[256]={
+  0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9,
+  0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005,
+  0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61,
+  0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd,
+  0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9,
+  0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75,
+  0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011,
+  0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd,
+  0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039,
+  0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5,
+  0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81,
+  0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d,
+  0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49,
+  0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95,
+  0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1,
+  0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d,
+  0x34867077,0x30476dc0,0x3d044b19,0x39c556ae,
+  0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072,
+  0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16,
+  0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca,
+  0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde,
+  0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02,
+  0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066,
+  0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba,
+  0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e,
+  0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692,
+  0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6,
+  0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a,
+  0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e,
+  0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2,
+  0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686,
+  0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a,
+  0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637,
+  0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb,
+  0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f,
+  0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53,
+  0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47,
+  0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b,
+  0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff,
+  0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623,
+  0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7,
+  0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b,
+  0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f,
+  0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3,
+  0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7,
+  0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b,
+  0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f,
+  0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3,
+  0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640,
+  0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c,
+  0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8,
+  0x68860bfd,0x6c47164a,0x61043093,0x65c52d24,
+  0x119b4be9,0x155a565e,0x18197087,0x1cd86d30,
+  0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec,
+  0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088,
+  0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654,
+  0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0,
+  0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c,
+  0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18,
+  0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4,
+  0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0,
+  0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c,
+  0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668,
+  0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4};
+
+/* init the encode/decode logical stream state */
+
+int ogg_stream_init(ogg_stream_state *os,int serialno){
+  if(os){
+    memset(os,0,sizeof(*os));
+    os->body_storage=16*1024;
+    os->lacing_storage=1024;
+
+    os->body_data=_ogg_malloc(os->body_storage*sizeof(*os->body_data));
+    os->lacing_vals=_ogg_malloc(os->lacing_storage*sizeof(*os->lacing_vals));
+    os->granule_vals=_ogg_malloc(os->lacing_storage*sizeof(*os->granule_vals));
+
+    if(!os->body_data || !os->lacing_vals || !os->granule_vals){
+      ogg_stream_clear(os);
+      return -1;
+    }
+
+    os->serialno=serialno;
+
+    return(0);
+  }
+  return(-1);
+}
+
+/* async/delayed error detection for the ogg_stream_state */
+int ogg_stream_check(ogg_stream_state *os){
+  if(!os || !os->body_data) return -1;
+  return 0;
+}
+
+/* _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)_ogg_free(os->body_data);
+    if(os->lacing_vals)_ogg_free(os->lacing_vals);
+    if(os->granule_vals)_ogg_free(os->granule_vals);
+
+    memset(os,0,sizeof(*os));
+  }
+  return(0);
+}
+
+int ogg_stream_destroy(ogg_stream_state *os){
+  if(os){
+    ogg_stream_clear(os);
+    _ogg_free(os);
+  }
+  return(0);
+}
+
+/* Helpers for ogg_stream_encode; this keeps the structure and
+   what's happening fairly clear */
+
+static int _os_body_expand(ogg_stream_state *os,long needed){
+  if(os->body_storage-needed<=os->body_fill){
+    long body_storage;
+    void *ret;
+    if(os->body_storage>LONG_MAX-needed){
+      ogg_stream_clear(os);
+      return -1;
+    }
+    body_storage=os->body_storage+needed;
+    if(body_storage<LONG_MAX-1024)body_storage+=1024;
+    ret=_ogg_realloc(os->body_data,body_storage*sizeof(*os->body_data));
+    if(!ret){
+      ogg_stream_clear(os);
+      return -1;
+    }
+    os->body_storage=body_storage;
+    os->body_data=ret;
+  }
+  return 0;
+}
+
+static int _os_lacing_expand(ogg_stream_state *os,long needed){
+  if(os->lacing_storage-needed<=os->lacing_fill){
+    long lacing_storage;
+    void *ret;
+    if(os->lacing_storage>LONG_MAX-needed){
+      ogg_stream_clear(os);
+      return -1;
+    }
+    lacing_storage=os->lacing_storage+needed;
+    if(lacing_storage<LONG_MAX-32)lacing_storage+=32;
+    ret=_ogg_realloc(os->lacing_vals,lacing_storage*sizeof(*os->lacing_vals));
+    if(!ret){
+      ogg_stream_clear(os);
+      return -1;
+    }
+    os->lacing_vals=ret;
+    ret=_ogg_realloc(os->granule_vals,lacing_storage*
+                     sizeof(*os->granule_vals));
+    if(!ret){
+      ogg_stream_clear(os);
+      return -1;
+    }
+    os->granule_vals=ret;
+    os->lacing_storage=lacing_storage;
+  }
+  return 0;
+}
+
+/* checksum the page */
+/* Direct table CRC; note that this will be faster in the future if we
+   perform the checksum simultaneously with other copies */
+
+void ogg_page_checksum_set(ogg_page *og){
+  if(og){
+    ogg_uint32_t crc_reg=0;
+    int i;
+
+    /* safety; needed for API behavior, but not framing code */
+    og->header[22]=0;
+    og->header[23]=0;
+    og->header[24]=0;
+    og->header[25]=0;
+
+    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]=(unsigned char)(crc_reg&0xff);
+    og->header[23]=(unsigned char)((crc_reg>>8)&0xff);
+    og->header[24]=(unsigned char)((crc_reg>>16)&0xff);
+    og->header[25]=(unsigned char)((crc_reg>>24)&0xff);
+  }
+}
+
+/* submit data to the internal buffer of the framing engine */
+int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov, int count,
+                       long e_o_s, ogg_int64_t granulepos){
+
+  long bytes = 0, lacing_vals;
+  int i;
+
+  if(ogg_stream_check(os)) return -1;
+  if(!iov) return 0;
+
+  for (i = 0; i < count; ++i){
+    if(iov[i].iov_len>LONG_MAX) return -1;
+    if(bytes>LONG_MAX-(long)iov[i].iov_len) return -1;
+    bytes += (long)iov[i].iov_len;
+  }
+  lacing_vals=bytes/255+1;
+
+  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);
+    os->body_returned=0;
+  }
+
+  /* make sure we have the buffer storage */
+  if(_os_body_expand(os,bytes) || _os_lacing_expand(os,lacing_vals))
+    return -1;
+
+  /* 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 */
+
+  for (i = 0; i < count; ++i) {
+    memcpy(os->body_data+os->body_fill, iov[i].iov_base, iov[i].iov_len);
+    os->body_fill += (int)iov[i].iov_len;
+  }
+
+  /* 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]=bytes%255;
+  os->granulepos=os->granule_vals[os->lacing_fill+i]=granulepos;
+
+  /* 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(e_o_s)os->e_o_s=1;
+
+  return(0);
+}
+
+int ogg_stream_packetin(ogg_stream_state *os,ogg_packet *op){
+  ogg_iovec_t iov;
+  iov.iov_base = op->packet;
+  iov.iov_len = op->bytes;
+  return ogg_stream_iovecin(os, &iov, 1, op->e_o_s, op->granulepos);
+}
+
+/* Conditionally flush a page; force==0 will only flush nominal-size
+   pages, force==1 forces us to flush a page regardless of page size
+   so long as there's any data available at all. */
+static int ogg_stream_flush_i(ogg_stream_state *os,ogg_page *og, int force, int nfill){
+  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=-1;
+
+  if(ogg_stream_check(os)) return(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{
+
+    /* The extra packets_done, packet_just_done logic here attempts to do two things:
+       1) Don't unneccessarily span pages.
+       2) Unless necessary, don't flush pages if there are less than four packets on
+          them; this expands page size to reduce unneccessary overhead if incoming packets
+          are large.
+       These are not necessary behaviors, just 'always better than naive flushing'
+       without requiring an application to explicitly request a specific optimized
+       behavior. We'll want an explicit behavior setup pathway eventually as well. */
+
+    int packets_done=0;
+    int packet_just_done=0;
+    for(vals=0;vals<maxvals;vals++){
+      if(acc>nfill && packet_just_done>=4){
+        force=1;
+        break;
+      }
+      acc+=os->lacing_vals[vals]&0x0ff;
+      if((os->lacing_vals[vals]&0xff)<255){
+        granule_pos=os->granule_vals[vals];
+        packet_just_done=++packets_done;
+      }else
+        packet_just_done=0;
+    }
+    if(vals==255)force=1;
+  }
+
+  if(!force) return(0);
+
+  /* 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]=(unsigned char)(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]=(unsigned char)(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]=(unsigned char)(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]=(unsigned char)(vals&0xff);
+  for(i=0;i<vals;i++)
+    bytes+=os->header[i+27]=(unsigned char)(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(*os->lacing_vals));
+  memmove(os->granule_vals,os->granule_vals+vals,os->lacing_fill*sizeof(*os->granule_vals));
+  os->body_returned+=bytes;
+
+  /* calculate the checksum */
+
+  ogg_page_checksum_set(og);
+
+  /* done */
+  return(1);
+}
+
+/* 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 guarantee that all packets have flushed.
+   Only a return value of 0 from ogg_stream_flush indicates all packet
+   data is flushed into pages.
+
+   since ogg_stream_flush 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 specifically need to flush
+   a page regardless of size in the middle of a stream. */
+
+int ogg_stream_flush(ogg_stream_state *os,ogg_page *og){
+  return ogg_stream_flush_i(os,og,1,4096);
+}
+
+/* Like the above, but an argument is provided to adjust the nominal
+   page size for applications which are smart enough to provide their
+   own delay based flushing */
+
+int ogg_stream_flush_fill(ogg_stream_state *os,ogg_page *og, int nfill){
+  return ogg_stream_flush_i(os,og,1,nfill);
+}
+
+/* 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){
+  int force=0;
+  if(ogg_stream_check(os)) return 0;
+
+  if((os->e_o_s&&os->lacing_fill) ||          /* 'were done, now flush' case */
+     (os->lacing_fill&&!os->b_o_s))           /* 'initial header page' case */
+    force=1;
+
+  return(ogg_stream_flush_i(os,og,force,4096));
+}
+
+/* Like the above, but an argument is provided to adjust the nominal
+page size for applications which are smart enough to provide their
+own delay based flushing */
+
+int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill){
+  int force=0;
+  if(ogg_stream_check(os)) return 0;
+
+  if((os->e_o_s&&os->lacing_fill) ||          /* 'were done, now flush' case */
+     (os->lacing_fill&&!os->b_o_s))           /* 'initial header page' case */
+    force=1;
+
+  return(ogg_stream_flush_i(os,og,force,nfill));
+}
+
+int ogg_stream_eos(ogg_stream_state *os){
+  if(ogg_stream_check(os)) return 1;
+  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. */
+
+/* initialize the struct to a known state */
+int ogg_sync_init(ogg_sync_state *oy){
+  if(oy){
+    oy->storage = -1; /* used as a readiness flag */
+    memset(oy,0,sizeof(*oy));
+  }
+  return(0);
+}
+
+/* clear non-flat storage within */
+int ogg_sync_clear(ogg_sync_state *oy){
+  if(oy){
+    if(oy->data)_ogg_free(oy->data);
+    memset(oy,0,sizeof(*oy));
+  }
+  return(0);
+}
+
+int ogg_sync_destroy(ogg_sync_state *oy){
+  if(oy){
+    ogg_sync_clear(oy);
+    _ogg_free(oy);
+  }
+  return(0);
+}
+
+int ogg_sync_check(ogg_sync_state *oy){
+  if(oy->storage<0) return -1;
+  return 0;
+}
+
+char *ogg_sync_buffer(ogg_sync_state *oy, long size){
+  if(ogg_sync_check(oy)) return NULL;
+
+  /* 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);
+    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 */
+    void *ret;
+
+    if(oy->data)
+      ret=_ogg_realloc(oy->data,newsize);
+    else
+      ret=_ogg_malloc(newsize);
+    if(!ret){
+      ogg_sync_clear(oy);
+      return NULL;
+    }
+    oy->data=ret;
+    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(ogg_sync_check(oy))return -1;
+  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(ogg_sync_check(oy))return 0;
+
+  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;
+    ogg_page_checksum_set(&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=(int)(next-oy->data);
+  return((long)-(next-page));
+}
+
+/* sync the stream and get a page.  Keep trying until we find a page.
+   Suppress '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){
+
+  if(ogg_sync_check(oy))return 0;
+
+  /* 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 */
+
+  for(;;){
+    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_granulepos(og);
+  int serialno=ogg_page_serialno(og);
+  long pageno=ogg_page_pageno(og);
+  int segments=header[26];
+
+  if(ogg_stream_check(os)) return -1;
+
+  /* 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(*os->lacing_vals));
+        memmove(os->granule_vals,os->granule_vals+lr,
+                (os->lacing_fill-lr)*sizeof(*os->granule_vals));
+      }
+      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);
+
+  if(_os_lacing_expand(os,segments+1)) return -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 may need to skip
+     some segments */
+  if(continued){
+    if(os->lacing_fill<1 ||
+       (os->lacing_vals[os->lacing_fill-1]&0xff)<255 ||
+       os->lacing_vals[os->lacing_fill-1]==0x400){
+      bos=0;
+      for(;segptr<segments;segptr++){
+        int val=header[27+segptr];
+        body+=val;
+        bodysize-=val;
+        if(val<255){
+          segptr++;
+          break;
+        }
+      }
+    }
+  }
+
+  if(bodysize){
+    if(_os_body_expand(os,bodysize)) return -1;
+    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){
+  if(ogg_sync_check(oy))return -1;
+
+  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){
+  if(ogg_stream_check(os)) return -1;
+
+  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_reset_serialno(ogg_stream_state *os,int serialno){
+  if(ogg_stream_check(os)) return -1;
+  ogg_stream_reset(os);
+  os->serialno=serialno;
+  return(0);
+}
+
+static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){
+
+  /* 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 need to tell the codec there's a gap; it might need to
+       handle previous packet dependencies. */
+    os->lacing_returned++;
+    os->packetno++;
+    return(-1);
+  }
+
+  if(!op && !adv)return(1); /* just using peek as an inexpensive way
+                               to ask if there's a whole packet
+                               waiting */
+
+  /* Gather the whole packet. We'll have no holes or a partial packet */
+  {
+    int size=os->lacing_vals[ptr]&0xff;
+    long bytes=size;
+    int eos=os->lacing_vals[ptr]&0x200; /* last packet of the stream? */
+    int bos=os->lacing_vals[ptr]&0x100; /* first packet of the stream? */
+
+    while(size==255){
+      int val=os->lacing_vals[++ptr];
+      size=val&0xff;
+      if(val&0x200)eos=0x200;
+      bytes+=size;
+    }
+
+    if(op){
+      op->e_o_s=eos;
+      op->b_o_s=bos;
+      op->packet=os->body_data+os->body_returned;
+      op->packetno=os->packetno;
+      op->granulepos=os->granule_vals[ptr];
+      op->bytes=bytes;
+    }
+
+    if(adv){
+      os->body_returned+=bytes;
+      os->lacing_returned=ptr+1;
+      os->packetno++;
+    }
+  }
+  return(1);
+}
+
+int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){
+  if(ogg_stream_check(os)) return 0;
+  return _packetout(os,op,1);
+}
+
+int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op){
+  if(ogg_stream_check(os)) return 0;
+  return _packetout(os,op,0);
+}
+
+void ogg_packet_clear(ogg_packet *op) {
+  _ogg_free(op->packet);
+  memset(op, 0, sizeof(*op));
+}
+
+#ifdef _V_SELFTEST
+#include <stdio.h>
+
+ogg_stream_state os_en, os_de;
+ogg_sync_state oy;
+
+void checkpacket(ogg_packet *op,long len, int no, long pos){
+  long j;
+  static int sequence=0;
+  static int lastno=0;
+
+  if(op->bytes!=len){
+    fprintf(stderr,"incorrect packet length (%ld != %ld)!\n",op->bytes,len);
+    exit(1);
+  }
+  if(op->granulepos!=pos){
+    fprintf(stderr,"incorrect packet granpos (%ld != %ld)!\n",(long)op->granulepos,pos);
+    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: %ld\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],
+          ((long)(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=_ogg_malloc(og->header_len);
+  memcpy(temp,og->header,og->header_len);
+  og->header=temp;
+
+  temp=_ogg_malloc(og->body_len);
+  memcpy(temp,og->body,og->body_len);
+  og->body=temp;
+}
+
+void free_page(ogg_page *og){
+  _ogg_free (og->header);
+  _ogg_free (og->body);
+}
+
+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,
+                       0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+                       0x01,0x02,0x03,0x04,1,0,0,0,
+                       0xf8,0x3c,0x19,0x79,
+                       255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       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,
+                       0x38,0xe6,0xb6,0x28,
+                       6,
+                       255,220,255,4,255,0};
+
+
+/* spill expansion test */
+const int head1_4b[] = {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_4b[] = {0x4f,0x67,0x67,0x53,0,0x00,
+                        0x07,0x10,0x00,0x00,0x00,0x00,0x00,0x00,
+                        0x01,0x02,0x03,0x04,1,0,0,0,
+                        0xce,0x8f,0x17,0x1a,
+                        23,
+                        255,255,255,255,255,255,255,255,
+                        255,255,255,255,255,255,255,255,255,10,255,4,255,0,0};
+
+
+const int head3_4b[] = {0x4f,0x67,0x67,0x53,0,0x04,
+                        0x07,0x14,0x00,0x00,0x00,0x00,0x00,0x00,
+                        0x01,0x02,0x03,0x04,2,0,0,0,
+                        0x9b,0xb2,0x50,0xa1,
+                        1,
+                        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,
+                       0x68,0x22,0x7c,0x3d,
+                       255,
+                       100,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255};
+
+const int head3_6[] = {0x4f,0x67,0x67,0x53,0,0x01,
+                       0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+                       0x01,0x02,0x03,0x04,2,0,0,0,
+                       0xf4,0x87,0xba,0xf3,
+                       255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       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,
+                       0xf7,0x2f,0x6c,0x60,
+                       5,
+                       254,255,4,255,0};
+
+/* 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,
+                       0x68,0x22,0x7c,0x3d,
+                       255,
+                       100,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       255,255,255,255,255,255,255,255,
+                       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};
+
+int compare_packet(const ogg_packet *op1, const ogg_packet *op2){
+  if(op1->packet!=op2->packet){
+    fprintf(stderr,"op1->packet != op2->packet\n");
+    return(1);
+  }
+  if(op1->bytes!=op2->bytes){
+    fprintf(stderr,"op1->bytes != op2->bytes\n");
+    return(1);
+  }
+  if(op1->b_o_s!=op2->b_o_s){
+    fprintf(stderr,"op1->b_o_s != op2->b_o_s\n");
+    return(1);
+  }
+  if(op1->e_o_s!=op2->e_o_s){
+    fprintf(stderr,"op1->e_o_s != op2->e_o_s\n");
+    return(1);
+  }
+  if(op1->granulepos!=op2->granulepos){
+    fprintf(stderr,"op1->granulepos != op2->granulepos\n");
+    return(1);
+  }
+  if(op1->packetno!=op2->packetno){
+    fprintf(stderr,"op1->packetno != op2->packetno\n");
+    return(1);
+  }
+  return(0);
+}
+
+void test_pack(const int *pl, const int **headers, int byteskip,
+               int pageskip, int packetskip){
+  unsigned char *data=_ogg_malloc(1024*1024); /* for scripted test cases only */
+  long inptr=0;
+  long outptr=0;
+  long deptr=0;
+  long depacket=0;
+  long granule_pos=7,pageno=0;
+  int i,j,packets,pageout=pageskip;
+  int eosflag=0;
+  int bosflag=0;
+
+  int byteskipcount=0;
+
+  ogg_stream_reset(&os_en);
+  ogg_stream_reset(&os_de);
+  ogg_sync_reset(&oy);
+
+  for(packets=0;packets<packetskip;packets++)
+    depacket+=pl[packets];
+
+  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.granulepos=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,"%ld, ",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++;
+        if(pageskip){
+          bosflag=1;
+          pageskip--;
+          deptr+=og.body_len;
+        }
+
+        /* have a complete page; submit it to sync/decode */
+
+        {
+          ogg_page og_de;
+          ogg_packet op_de,op_de2;
+          char *buf=ogg_sync_buffer(&oy,og.header_len+og.body_len);
+          char *next=buf;
+          byteskipcount+=og.header_len;
+          if(byteskipcount>byteskip){
+            memcpy(next,og.header,byteskipcount-byteskip);
+            next+=byteskipcount-byteskip;
+            byteskipcount=byteskip;
+          }
+
+          byteskipcount+=og.body_len;
+          if(byteskipcount>byteskip){
+            memcpy(next,og.body,byteskipcount-byteskip);
+            next+=byteskipcount-byteskip;
+            byteskipcount=byteskip;
+          }
+
+          ogg_sync_wrote(&oy,next-buf);
+
+          while(1){
+            int ret=ogg_sync_pageout(&oy,&og_de);
+            if(ret==0)break;
+            if(ret<0)continue;
+            /* got a page.  Happy happy.  Verify that it's good. */
+
+            fprintf(stderr,"(%d), ",pageout);
+
+            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_packetpeek(&os_de,&op_de2)>0){
+              ogg_stream_packetpeek(&os_de,NULL);
+              ogg_stream_packetout(&os_de,&op_de); /* just catching them all */
+
+              /* verify peek and out match */
+              if(compare_packet(&op_de,&op_de2)){
+                fprintf(stderr,"packetout != packetpeek! pos=%ld\n",
+                        depacket);
+                exit(1);
+              }
+
+              /* 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.granulepos!=-1){
+                fprintf(stderr," granule:%ld ",(long)op_de.granulepos);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  _ogg_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,0,0,0);
+  }
+
+  {
+    /* 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,0,0,0);
+  }
+
+  {
+    /* 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,0,0,0);
+  }
+
+  {
+    /* 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,0,0,0);
+  }
+
+  {
+    /* continuing packet test; with page spill expansion, we have to
+       overflow the lacing table. */
+    const int packets[]={0,65500,259,255,-1};
+    const int *headret[]={head1_4,head2_4,head3_4,NULL};
+
+    fprintf(stderr,"testing single packet page span... ");
+    test_pack(packets,headret,0,0,0);
+  }
+
+  {
+    /* spill expand packet test */
+    const int packets[]={0,4345,259,255,0,0,-1};
+    const int *headret[]={head1_4b,head2_4b,head3_4b,NULL};
+
+    fprintf(stderr,"testing page spill expansion... ");
+    test_pack(packets,headret,0,0,0);
+  }
+
+  /* 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,0,0,0);
+  }
+
+  {
+    /* packet that overspans over an entire page */
+    const int packets[]={0,100,130049,259,255,-1};
+    const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL};
+
+    fprintf(stderr,"testing very large packets... ");
+    test_pack(packets,headret,0,0,0);
+  }
+
+  {
+    /* test for the libogg 1.1.1 resync in large continuation bug
+       found by Josh Coalson)  */
+    const int packets[]={0,100,130049,259,255,-1};
+    const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL};
+
+    fprintf(stderr,"testing continuation resync in very large packets... ");
+    test_pack(packets,headret,100,2,3);
+  }
+
+  {
+    /* term only page.  why not? */
+    const int packets[]={0,100,64770,-1};
+    const int *headret[]={head1_7,head2_7,head3_7,NULL};
+
+    fprintf(stderr,"testing zero data page (1 nil packet)... ");
+    test_pack(packets,headret,0,0,0);
+  }
+
+
+
+  {
+    /* build a bunch of pages for testing */
+    unsigned char *data=_ogg_malloc(1024*1024);
+    int pl[]={0, 1,1,98,4079, 1,1,2954,2057, 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.granulepos=(i+1)*1000;
+
+      for(j=0;j<len;j++)data[inptr++]=i+j;
+      ogg_stream_packetin(&os_en,&op);
+    }
+
+    _ogg_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,1,1,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,1,2,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,98,3,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,4079,4,5000);
+      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,76,9,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,34,10,-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,1,1,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,1,2,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,98,3,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,4079,4,5000);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,1,5,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,1,6,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,2954,7,-1);
+      if(ogg_stream_packetout(&os_de,&test)!=1)error();
+      checkpacket(&test,2057,8,9000);
+      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,300,17,18000);
+      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");
+    }
+
+    /* Free page data that was previously copied */
+    {
+      for(i=0;i<5;i++){
+        free_page(&og[i]);
+      }
+    }
+  }
+
+  return(0);
+}
+
+#endif
-- 
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