nuclear@0: /********************************************************************
nuclear@0:  *                                                                  *
nuclear@0:  * THIS FILE IS PART OF THE Ogg CONTAINER SOURCE CODE.              *
nuclear@0:  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
nuclear@0:  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
nuclear@0:  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
nuclear@0:  *                                                                  *
nuclear@0:  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2010             *
nuclear@0:  * by the Xiph.Org Foundation http://www.xiph.org/                  *
nuclear@0:  *                                                                  *
nuclear@0:  ********************************************************************
nuclear@0: 
nuclear@0:  function: code raw packets into framed OggSquish stream and
nuclear@0:            decode Ogg streams back into raw packets
nuclear@0:  last mod: $Id: framing.c 18758 2013-01-08 16:29:56Z tterribe $
nuclear@0: 
nuclear@0:  note: The CRC code is directly derived from public domain code by
nuclear@0:  Ross Williams (ross@guest.adelaide.edu.au).  See docs/framing.html
nuclear@0:  for details.
nuclear@0: 
nuclear@0:  ********************************************************************/
nuclear@0: 
nuclear@0: #include <stdlib.h>
nuclear@0: #include <limits.h>
nuclear@0: #include <string.h>
nuclear@0: #include <ogg/ogg.h>
nuclear@0: 
nuclear@0: /* A complete description of Ogg framing exists in docs/framing.html */
nuclear@0: 
nuclear@0: int ogg_page_version(const ogg_page *og){
nuclear@0:   return((int)(og->header[4]));
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_page_continued(const ogg_page *og){
nuclear@0:   return((int)(og->header[5]&0x01));
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_page_bos(const ogg_page *og){
nuclear@0:   return((int)(og->header[5]&0x02));
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_page_eos(const ogg_page *og){
nuclear@0:   return((int)(og->header[5]&0x04));
nuclear@0: }
nuclear@0: 
nuclear@0: ogg_int64_t ogg_page_granulepos(const ogg_page *og){
nuclear@0:   unsigned char *page=og->header;
nuclear@0:   ogg_int64_t granulepos=page[13]&(0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[12]&0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[11]&0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[10]&0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[9]&0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[8]&0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[7]&0xff);
nuclear@0:   granulepos= (granulepos<<8)|(page[6]&0xff);
nuclear@0:   return(granulepos);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_page_serialno(const ogg_page *og){
nuclear@0:   return(og->header[14] |
nuclear@0:          (og->header[15]<<8) |
nuclear@0:          (og->header[16]<<16) |
nuclear@0:          (og->header[17]<<24));
nuclear@0: }
nuclear@0: 
nuclear@0: long ogg_page_pageno(const ogg_page *og){
nuclear@0:   return(og->header[18] |
nuclear@0:          (og->header[19]<<8) |
nuclear@0:          (og->header[20]<<16) |
nuclear@0:          (og->header[21]<<24));
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: 
nuclear@0: /* returns the number of packets that are completed on this page (if
nuclear@0:    the leading packet is begun on a previous page, but ends on this
nuclear@0:    page, it's counted */
nuclear@0: 
nuclear@0: /* NOTE:
nuclear@0:    If a page consists of a packet begun on a previous page, and a new
nuclear@0:    packet begun (but not completed) on this page, the return will be:
nuclear@0:      ogg_page_packets(page)   ==1,
nuclear@0:      ogg_page_continued(page) !=0
nuclear@0: 
nuclear@0:    If a page happens to be a single packet that was begun on a
nuclear@0:    previous page, and spans to the next page (in the case of a three or
nuclear@0:    more page packet), the return will be:
nuclear@0:      ogg_page_packets(page)   ==0,
nuclear@0:      ogg_page_continued(page) !=0
nuclear@0: */
nuclear@0: 
nuclear@0: int ogg_page_packets(const ogg_page *og){
nuclear@0:   int i,n=og->header[26],count=0;
nuclear@0:   for(i=0;i<n;i++)
nuclear@0:     if(og->header[27+i]<255)count++;
nuclear@0:   return(count);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: #if 0
nuclear@0: /* helper to initialize lookup for direct-table CRC (illustrative; we
nuclear@0:    use the static init below) */
nuclear@0: 
nuclear@0: static ogg_uint32_t _ogg_crc_entry(unsigned long index){
nuclear@0:   int           i;
nuclear@0:   unsigned long r;
nuclear@0: 
nuclear@0:   r = index << 24;
nuclear@0:   for (i=0; i<8; i++)
nuclear@0:     if (r & 0x80000000UL)
nuclear@0:       r = (r << 1) ^ 0x04c11db7; /* The same as the ethernet generator
nuclear@0:                                     polynomial, although we use an
nuclear@0:                                     unreflected alg and an init/final
nuclear@0:                                     of 0, not 0xffffffff */
nuclear@0:     else
nuclear@0:        r<<=1;
nuclear@0:  return (r & 0xffffffffUL);
nuclear@0: }
nuclear@0: #endif
nuclear@0: 
nuclear@0: static const ogg_uint32_t crc_lookup[256]={
nuclear@0:   0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9,
nuclear@0:   0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005,
nuclear@0:   0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61,
nuclear@0:   0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd,
nuclear@0:   0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9,
nuclear@0:   0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75,
nuclear@0:   0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011,
nuclear@0:   0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd,
nuclear@0:   0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039,
nuclear@0:   0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5,
nuclear@0:   0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81,
nuclear@0:   0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d,
nuclear@0:   0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49,
nuclear@0:   0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95,
nuclear@0:   0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1,
nuclear@0:   0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d,
nuclear@0:   0x34867077,0x30476dc0,0x3d044b19,0x39c556ae,
nuclear@0:   0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072,
nuclear@0:   0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16,
nuclear@0:   0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca,
nuclear@0:   0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde,
nuclear@0:   0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02,
nuclear@0:   0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066,
nuclear@0:   0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba,
nuclear@0:   0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e,
nuclear@0:   0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692,
nuclear@0:   0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6,
nuclear@0:   0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a,
nuclear@0:   0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e,
nuclear@0:   0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2,
nuclear@0:   0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686,
nuclear@0:   0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a,
nuclear@0:   0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637,
nuclear@0:   0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb,
nuclear@0:   0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f,
nuclear@0:   0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53,
nuclear@0:   0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47,
nuclear@0:   0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b,
nuclear@0:   0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff,
nuclear@0:   0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623,
nuclear@0:   0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7,
nuclear@0:   0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b,
nuclear@0:   0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f,
nuclear@0:   0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3,
nuclear@0:   0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7,
nuclear@0:   0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b,
nuclear@0:   0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f,
nuclear@0:   0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3,
nuclear@0:   0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640,
nuclear@0:   0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c,
nuclear@0:   0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8,
nuclear@0:   0x68860bfd,0x6c47164a,0x61043093,0x65c52d24,
nuclear@0:   0x119b4be9,0x155a565e,0x18197087,0x1cd86d30,
nuclear@0:   0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec,
nuclear@0:   0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088,
nuclear@0:   0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654,
nuclear@0:   0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0,
nuclear@0:   0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c,
nuclear@0:   0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18,
nuclear@0:   0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4,
nuclear@0:   0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0,
nuclear@0:   0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c,
nuclear@0:   0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668,
nuclear@0:   0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4};
nuclear@0: 
nuclear@0: /* init the encode/decode logical stream state */
nuclear@0: 
nuclear@0: int ogg_stream_init(ogg_stream_state *os,int serialno){
nuclear@0:   if(os){
nuclear@0:     memset(os,0,sizeof(*os));
nuclear@0:     os->body_storage=16*1024;
nuclear@0:     os->lacing_storage=1024;
nuclear@0: 
nuclear@0:     os->body_data=_ogg_malloc(os->body_storage*sizeof(*os->body_data));
nuclear@0:     os->lacing_vals=_ogg_malloc(os->lacing_storage*sizeof(*os->lacing_vals));
nuclear@0:     os->granule_vals=_ogg_malloc(os->lacing_storage*sizeof(*os->granule_vals));
nuclear@0: 
nuclear@0:     if(!os->body_data || !os->lacing_vals || !os->granule_vals){
nuclear@0:       ogg_stream_clear(os);
nuclear@0:       return -1;
nuclear@0:     }
nuclear@0: 
nuclear@0:     os->serialno=serialno;
nuclear@0: 
nuclear@0:     return(0);
nuclear@0:   }
nuclear@0:   return(-1);
nuclear@0: }
nuclear@0: 
nuclear@0: /* async/delayed error detection for the ogg_stream_state */
nuclear@0: int ogg_stream_check(ogg_stream_state *os){
nuclear@0:   if(!os || !os->body_data) return -1;
nuclear@0:   return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: /* _clear does not free os, only the non-flat storage within */
nuclear@0: int ogg_stream_clear(ogg_stream_state *os){
nuclear@0:   if(os){
nuclear@0:     if(os->body_data)_ogg_free(os->body_data);
nuclear@0:     if(os->lacing_vals)_ogg_free(os->lacing_vals);
nuclear@0:     if(os->granule_vals)_ogg_free(os->granule_vals);
nuclear@0: 
nuclear@0:     memset(os,0,sizeof(*os));
nuclear@0:   }
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_destroy(ogg_stream_state *os){
nuclear@0:   if(os){
nuclear@0:     ogg_stream_clear(os);
nuclear@0:     _ogg_free(os);
nuclear@0:   }
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: /* Helpers for ogg_stream_encode; this keeps the structure and
nuclear@0:    what's happening fairly clear */
nuclear@0: 
nuclear@0: static int _os_body_expand(ogg_stream_state *os,long needed){
nuclear@0:   if(os->body_storage-needed<=os->body_fill){
nuclear@0:     long body_storage;
nuclear@0:     void *ret;
nuclear@0:     if(os->body_storage>LONG_MAX-needed){
nuclear@0:       ogg_stream_clear(os);
nuclear@0:       return -1;
nuclear@0:     }
nuclear@0:     body_storage=os->body_storage+needed;
nuclear@0:     if(body_storage<LONG_MAX-1024)body_storage+=1024;
nuclear@0:     ret=_ogg_realloc(os->body_data,body_storage*sizeof(*os->body_data));
nuclear@0:     if(!ret){
nuclear@0:       ogg_stream_clear(os);
nuclear@0:       return -1;
nuclear@0:     }
nuclear@0:     os->body_storage=body_storage;
nuclear@0:     os->body_data=ret;
nuclear@0:   }
nuclear@0:   return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: static int _os_lacing_expand(ogg_stream_state *os,long needed){
nuclear@0:   if(os->lacing_storage-needed<=os->lacing_fill){
nuclear@0:     long lacing_storage;
nuclear@0:     void *ret;
nuclear@0:     if(os->lacing_storage>LONG_MAX-needed){
nuclear@0:       ogg_stream_clear(os);
nuclear@0:       return -1;
nuclear@0:     }
nuclear@0:     lacing_storage=os->lacing_storage+needed;
nuclear@0:     if(lacing_storage<LONG_MAX-32)lacing_storage+=32;
nuclear@0:     ret=_ogg_realloc(os->lacing_vals,lacing_storage*sizeof(*os->lacing_vals));
nuclear@0:     if(!ret){
nuclear@0:       ogg_stream_clear(os);
nuclear@0:       return -1;
nuclear@0:     }
nuclear@0:     os->lacing_vals=ret;
nuclear@0:     ret=_ogg_realloc(os->granule_vals,lacing_storage*
nuclear@0:                      sizeof(*os->granule_vals));
nuclear@0:     if(!ret){
nuclear@0:       ogg_stream_clear(os);
nuclear@0:       return -1;
nuclear@0:     }
nuclear@0:     os->granule_vals=ret;
nuclear@0:     os->lacing_storage=lacing_storage;
nuclear@0:   }
nuclear@0:   return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: /* checksum the page */
nuclear@0: /* Direct table CRC; note that this will be faster in the future if we
nuclear@0:    perform the checksum simultaneously with other copies */
nuclear@0: 
nuclear@0: void ogg_page_checksum_set(ogg_page *og){
nuclear@0:   if(og){
nuclear@0:     ogg_uint32_t crc_reg=0;
nuclear@0:     int i;
nuclear@0: 
nuclear@0:     /* safety; needed for API behavior, but not framing code */
nuclear@0:     og->header[22]=0;
nuclear@0:     og->header[23]=0;
nuclear@0:     og->header[24]=0;
nuclear@0:     og->header[25]=0;
nuclear@0: 
nuclear@0:     for(i=0;i<og->header_len;i++)
nuclear@0:       crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->header[i]];
nuclear@0:     for(i=0;i<og->body_len;i++)
nuclear@0:       crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->body[i]];
nuclear@0: 
nuclear@0:     og->header[22]=(unsigned char)(crc_reg&0xff);
nuclear@0:     og->header[23]=(unsigned char)((crc_reg>>8)&0xff);
nuclear@0:     og->header[24]=(unsigned char)((crc_reg>>16)&0xff);
nuclear@0:     og->header[25]=(unsigned char)((crc_reg>>24)&0xff);
nuclear@0:   }
nuclear@0: }
nuclear@0: 
nuclear@0: /* submit data to the internal buffer of the framing engine */
nuclear@0: int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov, int count,
nuclear@0:                        long e_o_s, ogg_int64_t granulepos){
nuclear@0: 
nuclear@0:   long bytes = 0, lacing_vals;
nuclear@0:   int i;
nuclear@0: 
nuclear@0:   if(ogg_stream_check(os)) return -1;
nuclear@0:   if(!iov) return 0;
nuclear@0: 
nuclear@0:   for (i = 0; i < count; ++i){
nuclear@0:     if(iov[i].iov_len>LONG_MAX) return -1;
nuclear@0:     if(bytes>LONG_MAX-(long)iov[i].iov_len) return -1;
nuclear@0:     bytes += (long)iov[i].iov_len;
nuclear@0:   }
nuclear@0:   lacing_vals=bytes/255+1;
nuclear@0: 
nuclear@0:   if(os->body_returned){
nuclear@0:     /* advance packet data according to the body_returned pointer. We
nuclear@0:        had to keep it around to return a pointer into the buffer last
nuclear@0:        call */
nuclear@0: 
nuclear@0:     os->body_fill-=os->body_returned;
nuclear@0:     if(os->body_fill)
nuclear@0:       memmove(os->body_data,os->body_data+os->body_returned,
nuclear@0:               os->body_fill);
nuclear@0:     os->body_returned=0;
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* make sure we have the buffer storage */
nuclear@0:   if(_os_body_expand(os,bytes) || _os_lacing_expand(os,lacing_vals))
nuclear@0:     return -1;
nuclear@0: 
nuclear@0:   /* Copy in the submitted packet.  Yes, the copy is a waste; this is
nuclear@0:      the liability of overly clean abstraction for the time being.  It
nuclear@0:      will actually be fairly easy to eliminate the extra copy in the
nuclear@0:      future */
nuclear@0: 
nuclear@0:   for (i = 0; i < count; ++i) {
nuclear@0:     memcpy(os->body_data+os->body_fill, iov[i].iov_base, iov[i].iov_len);
nuclear@0:     os->body_fill += (int)iov[i].iov_len;
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* Store lacing vals for this packet */
nuclear@0:   for(i=0;i<lacing_vals-1;i++){
nuclear@0:     os->lacing_vals[os->lacing_fill+i]=255;
nuclear@0:     os->granule_vals[os->lacing_fill+i]=os->granulepos;
nuclear@0:   }
nuclear@0:   os->lacing_vals[os->lacing_fill+i]=bytes%255;
nuclear@0:   os->granulepos=os->granule_vals[os->lacing_fill+i]=granulepos;
nuclear@0: 
nuclear@0:   /* flag the first segment as the beginning of the packet */
nuclear@0:   os->lacing_vals[os->lacing_fill]|= 0x100;
nuclear@0: 
nuclear@0:   os->lacing_fill+=lacing_vals;
nuclear@0: 
nuclear@0:   /* for the sake of completeness */
nuclear@0:   os->packetno++;
nuclear@0: 
nuclear@0:   if(e_o_s)os->e_o_s=1;
nuclear@0: 
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_packetin(ogg_stream_state *os,ogg_packet *op){
nuclear@0:   ogg_iovec_t iov;
nuclear@0:   iov.iov_base = op->packet;
nuclear@0:   iov.iov_len = op->bytes;
nuclear@0:   return ogg_stream_iovecin(os, &iov, 1, op->e_o_s, op->granulepos);
nuclear@0: }
nuclear@0: 
nuclear@0: /* Conditionally flush a page; force==0 will only flush nominal-size
nuclear@0:    pages, force==1 forces us to flush a page regardless of page size
nuclear@0:    so long as there's any data available at all. */
nuclear@0: static int ogg_stream_flush_i(ogg_stream_state *os,ogg_page *og, int force, int nfill){
nuclear@0:   int i;
nuclear@0:   int vals=0;
nuclear@0:   int maxvals=(os->lacing_fill>255?255:os->lacing_fill);
nuclear@0:   int bytes=0;
nuclear@0:   long acc=0;
nuclear@0:   ogg_int64_t granule_pos=-1;
nuclear@0: 
nuclear@0:   if(ogg_stream_check(os)) return(0);
nuclear@0:   if(maxvals==0) return(0);
nuclear@0: 
nuclear@0:   /* construct a page */
nuclear@0:   /* decide how many segments to include */
nuclear@0: 
nuclear@0:   /* If this is the initial header case, the first page must only include
nuclear@0:      the initial header packet */
nuclear@0:   if(os->b_o_s==0){  /* 'initial header page' case */
nuclear@0:     granule_pos=0;
nuclear@0:     for(vals=0;vals<maxvals;vals++){
nuclear@0:       if((os->lacing_vals[vals]&0x0ff)<255){
nuclear@0:         vals++;
nuclear@0:         break;
nuclear@0:       }
nuclear@0:     }
nuclear@0:   }else{
nuclear@0: 
nuclear@0:     /* The extra packets_done, packet_just_done logic here attempts to do two things:
nuclear@0:        1) Don't unneccessarily span pages.
nuclear@0:        2) Unless necessary, don't flush pages if there are less than four packets on
nuclear@0:           them; this expands page size to reduce unneccessary overhead if incoming packets
nuclear@0:           are large.
nuclear@0:        These are not necessary behaviors, just 'always better than naive flushing'
nuclear@0:        without requiring an application to explicitly request a specific optimized
nuclear@0:        behavior. We'll want an explicit behavior setup pathway eventually as well. */
nuclear@0: 
nuclear@0:     int packets_done=0;
nuclear@0:     int packet_just_done=0;
nuclear@0:     for(vals=0;vals<maxvals;vals++){
nuclear@0:       if(acc>nfill && packet_just_done>=4){
nuclear@0:         force=1;
nuclear@0:         break;
nuclear@0:       }
nuclear@0:       acc+=os->lacing_vals[vals]&0x0ff;
nuclear@0:       if((os->lacing_vals[vals]&0xff)<255){
nuclear@0:         granule_pos=os->granule_vals[vals];
nuclear@0:         packet_just_done=++packets_done;
nuclear@0:       }else
nuclear@0:         packet_just_done=0;
nuclear@0:     }
nuclear@0:     if(vals==255)force=1;
nuclear@0:   }
nuclear@0: 
nuclear@0:   if(!force) return(0);
nuclear@0: 
nuclear@0:   /* construct the header in temp storage */
nuclear@0:   memcpy(os->header,"OggS",4);
nuclear@0: 
nuclear@0:   /* stream structure version */
nuclear@0:   os->header[4]=0x00;
nuclear@0: 
nuclear@0:   /* continued packet flag? */
nuclear@0:   os->header[5]=0x00;
nuclear@0:   if((os->lacing_vals[0]&0x100)==0)os->header[5]|=0x01;
nuclear@0:   /* first page flag? */
nuclear@0:   if(os->b_o_s==0)os->header[5]|=0x02;
nuclear@0:   /* last page flag? */
nuclear@0:   if(os->e_o_s && os->lacing_fill==vals)os->header[5]|=0x04;
nuclear@0:   os->b_o_s=1;
nuclear@0: 
nuclear@0:   /* 64 bits of PCM position */
nuclear@0:   for(i=6;i<14;i++){
nuclear@0:     os->header[i]=(unsigned char)(granule_pos&0xff);
nuclear@0:     granule_pos>>=8;
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* 32 bits of stream serial number */
nuclear@0:   {
nuclear@0:     long serialno=os->serialno;
nuclear@0:     for(i=14;i<18;i++){
nuclear@0:       os->header[i]=(unsigned char)(serialno&0xff);
nuclear@0:       serialno>>=8;
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* 32 bits of page counter (we have both counter and page header
nuclear@0:      because this val can roll over) */
nuclear@0:   if(os->pageno==-1)os->pageno=0; /* because someone called
nuclear@0:                                      stream_reset; this would be a
nuclear@0:                                      strange thing to do in an
nuclear@0:                                      encode stream, but it has
nuclear@0:                                      plausible uses */
nuclear@0:   {
nuclear@0:     long pageno=os->pageno++;
nuclear@0:     for(i=18;i<22;i++){
nuclear@0:       os->header[i]=(unsigned char)(pageno&0xff);
nuclear@0:       pageno>>=8;
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* zero for computation; filled in later */
nuclear@0:   os->header[22]=0;
nuclear@0:   os->header[23]=0;
nuclear@0:   os->header[24]=0;
nuclear@0:   os->header[25]=0;
nuclear@0: 
nuclear@0:   /* segment table */
nuclear@0:   os->header[26]=(unsigned char)(vals&0xff);
nuclear@0:   for(i=0;i<vals;i++)
nuclear@0:     bytes+=os->header[i+27]=(unsigned char)(os->lacing_vals[i]&0xff);
nuclear@0: 
nuclear@0:   /* set pointers in the ogg_page struct */
nuclear@0:   og->header=os->header;
nuclear@0:   og->header_len=os->header_fill=vals+27;
nuclear@0:   og->body=os->body_data+os->body_returned;
nuclear@0:   og->body_len=bytes;
nuclear@0: 
nuclear@0:   /* advance the lacing data and set the body_returned pointer */
nuclear@0: 
nuclear@0:   os->lacing_fill-=vals;
nuclear@0:   memmove(os->lacing_vals,os->lacing_vals+vals,os->lacing_fill*sizeof(*os->lacing_vals));
nuclear@0:   memmove(os->granule_vals,os->granule_vals+vals,os->lacing_fill*sizeof(*os->granule_vals));
nuclear@0:   os->body_returned+=bytes;
nuclear@0: 
nuclear@0:   /* calculate the checksum */
nuclear@0: 
nuclear@0:   ogg_page_checksum_set(og);
nuclear@0: 
nuclear@0:   /* done */
nuclear@0:   return(1);
nuclear@0: }
nuclear@0: 
nuclear@0: /* This will flush remaining packets into a page (returning nonzero),
nuclear@0:    even if there is not enough data to trigger a flush normally
nuclear@0:    (undersized page). If there are no packets or partial packets to
nuclear@0:    flush, ogg_stream_flush returns 0.  Note that ogg_stream_flush will
nuclear@0:    try to flush a normal sized page like ogg_stream_pageout; a call to
nuclear@0:    ogg_stream_flush does not guarantee that all packets have flushed.
nuclear@0:    Only a return value of 0 from ogg_stream_flush indicates all packet
nuclear@0:    data is flushed into pages.
nuclear@0: 
nuclear@0:    since ogg_stream_flush will flush the last page in a stream even if
nuclear@0:    it's undersized, you almost certainly want to use ogg_stream_pageout
nuclear@0:    (and *not* ogg_stream_flush) unless you specifically need to flush
nuclear@0:    a page regardless of size in the middle of a stream. */
nuclear@0: 
nuclear@0: int ogg_stream_flush(ogg_stream_state *os,ogg_page *og){
nuclear@0:   return ogg_stream_flush_i(os,og,1,4096);
nuclear@0: }
nuclear@0: 
nuclear@0: /* Like the above, but an argument is provided to adjust the nominal
nuclear@0:    page size for applications which are smart enough to provide their
nuclear@0:    own delay based flushing */
nuclear@0: 
nuclear@0: int ogg_stream_flush_fill(ogg_stream_state *os,ogg_page *og, int nfill){
nuclear@0:   return ogg_stream_flush_i(os,og,1,nfill);
nuclear@0: }
nuclear@0: 
nuclear@0: /* This constructs pages from buffered packet segments.  The pointers
nuclear@0: returned are to static buffers; do not free. The returned buffers are
nuclear@0: good only until the next call (using the same ogg_stream_state) */
nuclear@0: 
nuclear@0: int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og){
nuclear@0:   int force=0;
nuclear@0:   if(ogg_stream_check(os)) return 0;
nuclear@0: 
nuclear@0:   if((os->e_o_s&&os->lacing_fill) ||          /* 'were done, now flush' case */
nuclear@0:      (os->lacing_fill&&!os->b_o_s))           /* 'initial header page' case */
nuclear@0:     force=1;
nuclear@0: 
nuclear@0:   return(ogg_stream_flush_i(os,og,force,4096));
nuclear@0: }
nuclear@0: 
nuclear@0: /* Like the above, but an argument is provided to adjust the nominal
nuclear@0: page size for applications which are smart enough to provide their
nuclear@0: own delay based flushing */
nuclear@0: 
nuclear@0: int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill){
nuclear@0:   int force=0;
nuclear@0:   if(ogg_stream_check(os)) return 0;
nuclear@0: 
nuclear@0:   if((os->e_o_s&&os->lacing_fill) ||          /* 'were done, now flush' case */
nuclear@0:      (os->lacing_fill&&!os->b_o_s))           /* 'initial header page' case */
nuclear@0:     force=1;
nuclear@0: 
nuclear@0:   return(ogg_stream_flush_i(os,og,force,nfill));
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_eos(ogg_stream_state *os){
nuclear@0:   if(ogg_stream_check(os)) return 1;
nuclear@0:   return os->e_o_s;
nuclear@0: }
nuclear@0: 
nuclear@0: /* DECODING PRIMITIVES: packet streaming layer **********************/
nuclear@0: 
nuclear@0: /* This has two layers to place more of the multi-serialno and paging
nuclear@0:    control in the application's hands.  First, we expose a data buffer
nuclear@0:    using ogg_sync_buffer().  The app either copies into the
nuclear@0:    buffer, or passes it directly to read(), etc.  We then call
nuclear@0:    ogg_sync_wrote() to tell how many bytes we just added.
nuclear@0: 
nuclear@0:    Pages are returned (pointers into the buffer in ogg_sync_state)
nuclear@0:    by ogg_sync_pageout().  The page is then submitted to
nuclear@0:    ogg_stream_pagein() along with the appropriate
nuclear@0:    ogg_stream_state* (ie, matching serialno).  We then get raw
nuclear@0:    packets out calling ogg_stream_packetout() with a
nuclear@0:    ogg_stream_state. */
nuclear@0: 
nuclear@0: /* initialize the struct to a known state */
nuclear@0: int ogg_sync_init(ogg_sync_state *oy){
nuclear@0:   if(oy){
nuclear@0:     oy->storage = -1; /* used as a readiness flag */
nuclear@0:     memset(oy,0,sizeof(*oy));
nuclear@0:   }
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: /* clear non-flat storage within */
nuclear@0: int ogg_sync_clear(ogg_sync_state *oy){
nuclear@0:   if(oy){
nuclear@0:     if(oy->data)_ogg_free(oy->data);
nuclear@0:     memset(oy,0,sizeof(*oy));
nuclear@0:   }
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_sync_destroy(ogg_sync_state *oy){
nuclear@0:   if(oy){
nuclear@0:     ogg_sync_clear(oy);
nuclear@0:     _ogg_free(oy);
nuclear@0:   }
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_sync_check(ogg_sync_state *oy){
nuclear@0:   if(oy->storage<0) return -1;
nuclear@0:   return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: char *ogg_sync_buffer(ogg_sync_state *oy, long size){
nuclear@0:   if(ogg_sync_check(oy)) return NULL;
nuclear@0: 
nuclear@0:   /* first, clear out any space that has been previously returned */
nuclear@0:   if(oy->returned){
nuclear@0:     oy->fill-=oy->returned;
nuclear@0:     if(oy->fill>0)
nuclear@0:       memmove(oy->data,oy->data+oy->returned,oy->fill);
nuclear@0:     oy->returned=0;
nuclear@0:   }
nuclear@0: 
nuclear@0:   if(size>oy->storage-oy->fill){
nuclear@0:     /* We need to extend the internal buffer */
nuclear@0:     long newsize=size+oy->fill+4096; /* an extra page to be nice */
nuclear@0:     void *ret;
nuclear@0: 
nuclear@0:     if(oy->data)
nuclear@0:       ret=_ogg_realloc(oy->data,newsize);
nuclear@0:     else
nuclear@0:       ret=_ogg_malloc(newsize);
nuclear@0:     if(!ret){
nuclear@0:       ogg_sync_clear(oy);
nuclear@0:       return NULL;
nuclear@0:     }
nuclear@0:     oy->data=ret;
nuclear@0:     oy->storage=newsize;
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* expose a segment at least as large as requested at the fill mark */
nuclear@0:   return((char *)oy->data+oy->fill);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_sync_wrote(ogg_sync_state *oy, long bytes){
nuclear@0:   if(ogg_sync_check(oy))return -1;
nuclear@0:   if(oy->fill+bytes>oy->storage)return -1;
nuclear@0:   oy->fill+=bytes;
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: /* sync the stream.  This is meant to be useful for finding page
nuclear@0:    boundaries.
nuclear@0: 
nuclear@0:    return values for this:
nuclear@0:   -n) skipped n bytes
nuclear@0:    0) page not ready; more data (no bytes skipped)
nuclear@0:    n) page synced at current location; page length n bytes
nuclear@0: 
nuclear@0: */
nuclear@0: 
nuclear@0: long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){
nuclear@0:   unsigned char *page=oy->data+oy->returned;
nuclear@0:   unsigned char *next;
nuclear@0:   long bytes=oy->fill-oy->returned;
nuclear@0: 
nuclear@0:   if(ogg_sync_check(oy))return 0;
nuclear@0: 
nuclear@0:   if(oy->headerbytes==0){
nuclear@0:     int headerbytes,i;
nuclear@0:     if(bytes<27)return(0); /* not enough for a header */
nuclear@0: 
nuclear@0:     /* verify capture pattern */
nuclear@0:     if(memcmp(page,"OggS",4))goto sync_fail;
nuclear@0: 
nuclear@0:     headerbytes=page[26]+27;
nuclear@0:     if(bytes<headerbytes)return(0); /* not enough for header + seg table */
nuclear@0: 
nuclear@0:     /* count up body length in the segment table */
nuclear@0: 
nuclear@0:     for(i=0;i<page[26];i++)
nuclear@0:       oy->bodybytes+=page[27+i];
nuclear@0:     oy->headerbytes=headerbytes;
nuclear@0:   }
nuclear@0: 
nuclear@0:   if(oy->bodybytes+oy->headerbytes>bytes)return(0);
nuclear@0: 
nuclear@0:   /* The whole test page is buffered.  Verify the checksum */
nuclear@0:   {
nuclear@0:     /* Grab the checksum bytes, set the header field to zero */
nuclear@0:     char chksum[4];
nuclear@0:     ogg_page log;
nuclear@0: 
nuclear@0:     memcpy(chksum,page+22,4);
nuclear@0:     memset(page+22,0,4);
nuclear@0: 
nuclear@0:     /* set up a temp page struct and recompute the checksum */
nuclear@0:     log.header=page;
nuclear@0:     log.header_len=oy->headerbytes;
nuclear@0:     log.body=page+oy->headerbytes;
nuclear@0:     log.body_len=oy->bodybytes;
nuclear@0:     ogg_page_checksum_set(&log);
nuclear@0: 
nuclear@0:     /* Compare */
nuclear@0:     if(memcmp(chksum,page+22,4)){
nuclear@0:       /* D'oh.  Mismatch! Corrupt page (or miscapture and not a page
nuclear@0:          at all) */
nuclear@0:       /* replace the computed checksum with the one actually read in */
nuclear@0:       memcpy(page+22,chksum,4);
nuclear@0: 
nuclear@0:       /* Bad checksum. Lose sync */
nuclear@0:       goto sync_fail;
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* yes, have a whole page all ready to go */
nuclear@0:   {
nuclear@0:     unsigned char *page=oy->data+oy->returned;
nuclear@0:     long bytes;
nuclear@0: 
nuclear@0:     if(og){
nuclear@0:       og->header=page;
nuclear@0:       og->header_len=oy->headerbytes;
nuclear@0:       og->body=page+oy->headerbytes;
nuclear@0:       og->body_len=oy->bodybytes;
nuclear@0:     }
nuclear@0: 
nuclear@0:     oy->unsynced=0;
nuclear@0:     oy->returned+=(bytes=oy->headerbytes+oy->bodybytes);
nuclear@0:     oy->headerbytes=0;
nuclear@0:     oy->bodybytes=0;
nuclear@0:     return(bytes);
nuclear@0:   }
nuclear@0: 
nuclear@0:  sync_fail:
nuclear@0: 
nuclear@0:   oy->headerbytes=0;
nuclear@0:   oy->bodybytes=0;
nuclear@0: 
nuclear@0:   /* search for possible capture */
nuclear@0:   next=memchr(page+1,'O',bytes-1);
nuclear@0:   if(!next)
nuclear@0:     next=oy->data+oy->fill;
nuclear@0: 
nuclear@0:   oy->returned=(int)(next-oy->data);
nuclear@0:   return((long)-(next-page));
nuclear@0: }
nuclear@0: 
nuclear@0: /* sync the stream and get a page.  Keep trying until we find a page.
nuclear@0:    Suppress 'sync errors' after reporting the first.
nuclear@0: 
nuclear@0:    return values:
nuclear@0:    -1) recapture (hole in data)
nuclear@0:     0) need more data
nuclear@0:     1) page returned
nuclear@0: 
nuclear@0:    Returns pointers into buffered data; invalidated by next call to
nuclear@0:    _stream, _clear, _init, or _buffer */
nuclear@0: 
nuclear@0: int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){
nuclear@0: 
nuclear@0:   if(ogg_sync_check(oy))return 0;
nuclear@0: 
nuclear@0:   /* all we need to do is verify a page at the head of the stream
nuclear@0:      buffer.  If it doesn't verify, we look for the next potential
nuclear@0:      frame */
nuclear@0: 
nuclear@0:   for(;;){
nuclear@0:     long ret=ogg_sync_pageseek(oy,og);
nuclear@0:     if(ret>0){
nuclear@0:       /* have a page */
nuclear@0:       return(1);
nuclear@0:     }
nuclear@0:     if(ret==0){
nuclear@0:       /* need more data */
nuclear@0:       return(0);
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* head did not start a synced page... skipped some bytes */
nuclear@0:     if(!oy->unsynced){
nuclear@0:       oy->unsynced=1;
nuclear@0:       return(-1);
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* loop. keep looking */
nuclear@0: 
nuclear@0:   }
nuclear@0: }
nuclear@0: 
nuclear@0: /* add the incoming page to the stream state; we decompose the page
nuclear@0:    into packet segments here as well. */
nuclear@0: 
nuclear@0: int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){
nuclear@0:   unsigned char *header=og->header;
nuclear@0:   unsigned char *body=og->body;
nuclear@0:   long           bodysize=og->body_len;
nuclear@0:   int            segptr=0;
nuclear@0: 
nuclear@0:   int version=ogg_page_version(og);
nuclear@0:   int continued=ogg_page_continued(og);
nuclear@0:   int bos=ogg_page_bos(og);
nuclear@0:   int eos=ogg_page_eos(og);
nuclear@0:   ogg_int64_t granulepos=ogg_page_granulepos(og);
nuclear@0:   int serialno=ogg_page_serialno(og);
nuclear@0:   long pageno=ogg_page_pageno(og);
nuclear@0:   int segments=header[26];
nuclear@0: 
nuclear@0:   if(ogg_stream_check(os)) return -1;
nuclear@0: 
nuclear@0:   /* clean up 'returned data' */
nuclear@0:   {
nuclear@0:     long lr=os->lacing_returned;
nuclear@0:     long br=os->body_returned;
nuclear@0: 
nuclear@0:     /* body data */
nuclear@0:     if(br){
nuclear@0:       os->body_fill-=br;
nuclear@0:       if(os->body_fill)
nuclear@0:         memmove(os->body_data,os->body_data+br,os->body_fill);
nuclear@0:       os->body_returned=0;
nuclear@0:     }
nuclear@0: 
nuclear@0:     if(lr){
nuclear@0:       /* segment table */
nuclear@0:       if(os->lacing_fill-lr){
nuclear@0:         memmove(os->lacing_vals,os->lacing_vals+lr,
nuclear@0:                 (os->lacing_fill-lr)*sizeof(*os->lacing_vals));
nuclear@0:         memmove(os->granule_vals,os->granule_vals+lr,
nuclear@0:                 (os->lacing_fill-lr)*sizeof(*os->granule_vals));
nuclear@0:       }
nuclear@0:       os->lacing_fill-=lr;
nuclear@0:       os->lacing_packet-=lr;
nuclear@0:       os->lacing_returned=0;
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* check the serial number */
nuclear@0:   if(serialno!=os->serialno)return(-1);
nuclear@0:   if(version>0)return(-1);
nuclear@0: 
nuclear@0:   if(_os_lacing_expand(os,segments+1)) return -1;
nuclear@0: 
nuclear@0:   /* are we in sequence? */
nuclear@0:   if(pageno!=os->pageno){
nuclear@0:     int i;
nuclear@0: 
nuclear@0:     /* unroll previous partial packet (if any) */
nuclear@0:     for(i=os->lacing_packet;i<os->lacing_fill;i++)
nuclear@0:       os->body_fill-=os->lacing_vals[i]&0xff;
nuclear@0:     os->lacing_fill=os->lacing_packet;
nuclear@0: 
nuclear@0:     /* make a note of dropped data in segment table */
nuclear@0:     if(os->pageno!=-1){
nuclear@0:       os->lacing_vals[os->lacing_fill++]=0x400;
nuclear@0:       os->lacing_packet++;
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* are we a 'continued packet' page?  If so, we may need to skip
nuclear@0:      some segments */
nuclear@0:   if(continued){
nuclear@0:     if(os->lacing_fill<1 ||
nuclear@0:        os->lacing_vals[os->lacing_fill-1]==0x400){
nuclear@0:       bos=0;
nuclear@0:       for(;segptr<segments;segptr++){
nuclear@0:         int val=header[27+segptr];
nuclear@0:         body+=val;
nuclear@0:         bodysize-=val;
nuclear@0:         if(val<255){
nuclear@0:           segptr++;
nuclear@0:           break;
nuclear@0:         }
nuclear@0:       }
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   if(bodysize){
nuclear@0:     if(_os_body_expand(os,bodysize)) return -1;
nuclear@0:     memcpy(os->body_data+os->body_fill,body,bodysize);
nuclear@0:     os->body_fill+=bodysize;
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     int saved=-1;
nuclear@0:     while(segptr<segments){
nuclear@0:       int val=header[27+segptr];
nuclear@0:       os->lacing_vals[os->lacing_fill]=val;
nuclear@0:       os->granule_vals[os->lacing_fill]=-1;
nuclear@0: 
nuclear@0:       if(bos){
nuclear@0:         os->lacing_vals[os->lacing_fill]|=0x100;
nuclear@0:         bos=0;
nuclear@0:       }
nuclear@0: 
nuclear@0:       if(val<255)saved=os->lacing_fill;
nuclear@0: 
nuclear@0:       os->lacing_fill++;
nuclear@0:       segptr++;
nuclear@0: 
nuclear@0:       if(val<255)os->lacing_packet=os->lacing_fill;
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* set the granulepos on the last granuleval of the last full packet */
nuclear@0:     if(saved!=-1){
nuclear@0:       os->granule_vals[saved]=granulepos;
nuclear@0:     }
nuclear@0: 
nuclear@0:   }
nuclear@0: 
nuclear@0:   if(eos){
nuclear@0:     os->e_o_s=1;
nuclear@0:     if(os->lacing_fill>0)
nuclear@0:       os->lacing_vals[os->lacing_fill-1]|=0x200;
nuclear@0:   }
nuclear@0: 
nuclear@0:   os->pageno=pageno+1;
nuclear@0: 
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: /* clear things to an initial state.  Good to call, eg, before seeking */
nuclear@0: int ogg_sync_reset(ogg_sync_state *oy){
nuclear@0:   if(ogg_sync_check(oy))return -1;
nuclear@0: 
nuclear@0:   oy->fill=0;
nuclear@0:   oy->returned=0;
nuclear@0:   oy->unsynced=0;
nuclear@0:   oy->headerbytes=0;
nuclear@0:   oy->bodybytes=0;
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_reset(ogg_stream_state *os){
nuclear@0:   if(ogg_stream_check(os)) return -1;
nuclear@0: 
nuclear@0:   os->body_fill=0;
nuclear@0:   os->body_returned=0;
nuclear@0: 
nuclear@0:   os->lacing_fill=0;
nuclear@0:   os->lacing_packet=0;
nuclear@0:   os->lacing_returned=0;
nuclear@0: 
nuclear@0:   os->header_fill=0;
nuclear@0: 
nuclear@0:   os->e_o_s=0;
nuclear@0:   os->b_o_s=0;
nuclear@0:   os->pageno=-1;
nuclear@0:   os->packetno=0;
nuclear@0:   os->granulepos=0;
nuclear@0: 
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno){
nuclear@0:   if(ogg_stream_check(os)) return -1;
nuclear@0:   ogg_stream_reset(os);
nuclear@0:   os->serialno=serialno;
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){
nuclear@0: 
nuclear@0:   /* The last part of decode. We have the stream broken into packet
nuclear@0:      segments.  Now we need to group them into packets (or return the
nuclear@0:      out of sync markers) */
nuclear@0: 
nuclear@0:   int ptr=os->lacing_returned;
nuclear@0: 
nuclear@0:   if(os->lacing_packet<=ptr)return(0);
nuclear@0: 
nuclear@0:   if(os->lacing_vals[ptr]&0x400){
nuclear@0:     /* we need to tell the codec there's a gap; it might need to
nuclear@0:        handle previous packet dependencies. */
nuclear@0:     os->lacing_returned++;
nuclear@0:     os->packetno++;
nuclear@0:     return(-1);
nuclear@0:   }
nuclear@0: 
nuclear@0:   if(!op && !adv)return(1); /* just using peek as an inexpensive way
nuclear@0:                                to ask if there's a whole packet
nuclear@0:                                waiting */
nuclear@0: 
nuclear@0:   /* Gather the whole packet. We'll have no holes or a partial packet */
nuclear@0:   {
nuclear@0:     int size=os->lacing_vals[ptr]&0xff;
nuclear@0:     long bytes=size;
nuclear@0:     int eos=os->lacing_vals[ptr]&0x200; /* last packet of the stream? */
nuclear@0:     int bos=os->lacing_vals[ptr]&0x100; /* first packet of the stream? */
nuclear@0: 
nuclear@0:     while(size==255){
nuclear@0:       int val=os->lacing_vals[++ptr];
nuclear@0:       size=val&0xff;
nuclear@0:       if(val&0x200)eos=0x200;
nuclear@0:       bytes+=size;
nuclear@0:     }
nuclear@0: 
nuclear@0:     if(op){
nuclear@0:       op->e_o_s=eos;
nuclear@0:       op->b_o_s=bos;
nuclear@0:       op->packet=os->body_data+os->body_returned;
nuclear@0:       op->packetno=os->packetno;
nuclear@0:       op->granulepos=os->granule_vals[ptr];
nuclear@0:       op->bytes=bytes;
nuclear@0:     }
nuclear@0: 
nuclear@0:     if(adv){
nuclear@0:       os->body_returned+=bytes;
nuclear@0:       os->lacing_returned=ptr+1;
nuclear@0:       os->packetno++;
nuclear@0:     }
nuclear@0:   }
nuclear@0:   return(1);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){
nuclear@0:   if(ogg_stream_check(os)) return 0;
nuclear@0:   return _packetout(os,op,1);
nuclear@0: }
nuclear@0: 
nuclear@0: int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op){
nuclear@0:   if(ogg_stream_check(os)) return 0;
nuclear@0:   return _packetout(os,op,0);
nuclear@0: }
nuclear@0: 
nuclear@0: void ogg_packet_clear(ogg_packet *op) {
nuclear@0:   _ogg_free(op->packet);
nuclear@0:   memset(op, 0, sizeof(*op));
nuclear@0: }
nuclear@0: 
nuclear@0: #ifdef _V_SELFTEST
nuclear@0: #include <stdio.h>
nuclear@0: 
nuclear@0: ogg_stream_state os_en, os_de;
nuclear@0: ogg_sync_state oy;
nuclear@0: 
nuclear@0: void checkpacket(ogg_packet *op,long len, int no, long pos){
nuclear@0:   long j;
nuclear@0:   static int sequence=0;
nuclear@0:   static int lastno=0;
nuclear@0: 
nuclear@0:   if(op->bytes!=len){
nuclear@0:     fprintf(stderr,"incorrect packet length (%ld != %ld)!\n",op->bytes,len);
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   if(op->granulepos!=pos){
nuclear@0:     fprintf(stderr,"incorrect packet granpos (%ld != %ld)!\n",(long)op->granulepos,pos);
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* packet number just follows sequence/gap; adjust the input number
nuclear@0:      for that */
nuclear@0:   if(no==0){
nuclear@0:     sequence=0;
nuclear@0:   }else{
nuclear@0:     sequence++;
nuclear@0:     if(no>lastno+1)
nuclear@0:       sequence++;
nuclear@0:   }
nuclear@0:   lastno=no;
nuclear@0:   if(op->packetno!=sequence){
nuclear@0:     fprintf(stderr,"incorrect packet sequence %ld != %d\n",
nuclear@0:             (long)(op->packetno),sequence);
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* Test data */
nuclear@0:   for(j=0;j<op->bytes;j++)
nuclear@0:     if(op->packet[j]!=((j+no)&0xff)){
nuclear@0:       fprintf(stderr,"body data mismatch (1) at pos %ld: %x!=%lx!\n\n",
nuclear@0:               j,op->packet[j],(j+no)&0xff);
nuclear@0:       exit(1);
nuclear@0:     }
nuclear@0: }
nuclear@0: 
nuclear@0: void check_page(unsigned char *data,const int *header,ogg_page *og){
nuclear@0:   long j;
nuclear@0:   /* Test data */
nuclear@0:   for(j=0;j<og->body_len;j++)
nuclear@0:     if(og->body[j]!=data[j]){
nuclear@0:       fprintf(stderr,"body data mismatch (2) at pos %ld: %x!=%x!\n\n",
nuclear@0:               j,data[j],og->body[j]);
nuclear@0:       exit(1);
nuclear@0:     }
nuclear@0: 
nuclear@0:   /* Test header */
nuclear@0:   for(j=0;j<og->header_len;j++){
nuclear@0:     if(og->header[j]!=header[j]){
nuclear@0:       fprintf(stderr,"header content mismatch at pos %ld:\n",j);
nuclear@0:       for(j=0;j<header[26]+27;j++)
nuclear@0:         fprintf(stderr," (%ld)%02x:%02x",j,header[j],og->header[j]);
nuclear@0:       fprintf(stderr,"\n");
nuclear@0:       exit(1);
nuclear@0:     }
nuclear@0:   }
nuclear@0:   if(og->header_len!=header[26]+27){
nuclear@0:     fprintf(stderr,"header length incorrect! (%ld!=%d)\n",
nuclear@0:             og->header_len,header[26]+27);
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0: }
nuclear@0: 
nuclear@0: void print_header(ogg_page *og){
nuclear@0:   int j;
nuclear@0:   fprintf(stderr,"\nHEADER:\n");
nuclear@0:   fprintf(stderr,"  capture: %c %c %c %c  version: %d  flags: %x\n",
nuclear@0:           og->header[0],og->header[1],og->header[2],og->header[3],
nuclear@0:           (int)og->header[4],(int)og->header[5]);
nuclear@0: 
nuclear@0:   fprintf(stderr,"  granulepos: %d  serialno: %d  pageno: %ld\n",
nuclear@0:           (og->header[9]<<24)|(og->header[8]<<16)|
nuclear@0:           (og->header[7]<<8)|og->header[6],
nuclear@0:           (og->header[17]<<24)|(og->header[16]<<16)|
nuclear@0:           (og->header[15]<<8)|og->header[14],
nuclear@0:           ((long)(og->header[21])<<24)|(og->header[20]<<16)|
nuclear@0:           (og->header[19]<<8)|og->header[18]);
nuclear@0: 
nuclear@0:   fprintf(stderr,"  checksum: %02x:%02x:%02x:%02x\n  segments: %d (",
nuclear@0:           (int)og->header[22],(int)og->header[23],
nuclear@0:           (int)og->header[24],(int)og->header[25],
nuclear@0:           (int)og->header[26]);
nuclear@0: 
nuclear@0:   for(j=27;j<og->header_len;j++)
nuclear@0:     fprintf(stderr,"%d ",(int)og->header[j]);
nuclear@0:   fprintf(stderr,")\n\n");
nuclear@0: }
nuclear@0: 
nuclear@0: void copy_page(ogg_page *og){
nuclear@0:   unsigned char *temp=_ogg_malloc(og->header_len);
nuclear@0:   memcpy(temp,og->header,og->header_len);
nuclear@0:   og->header=temp;
nuclear@0: 
nuclear@0:   temp=_ogg_malloc(og->body_len);
nuclear@0:   memcpy(temp,og->body,og->body_len);
nuclear@0:   og->body=temp;
nuclear@0: }
nuclear@0: 
nuclear@0: void free_page(ogg_page *og){
nuclear@0:   _ogg_free (og->header);
nuclear@0:   _ogg_free (og->body);
nuclear@0: }
nuclear@0: 
nuclear@0: void error(void){
nuclear@0:   fprintf(stderr,"error!\n");
nuclear@0:   exit(1);
nuclear@0: }
nuclear@0: 
nuclear@0: /* 17 only */
nuclear@0: const int head1_0[] = {0x4f,0x67,0x67,0x53,0,0x06,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0x15,0xed,0xec,0x91,
nuclear@0:                        1,
nuclear@0:                        17};
nuclear@0: 
nuclear@0: /* 17, 254, 255, 256, 500, 510, 600 byte, pad */
nuclear@0: const int head1_1[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0x59,0x10,0x6c,0x2c,
nuclear@0:                        1,
nuclear@0:                        17};
nuclear@0: const int head2_1[] = {0x4f,0x67,0x67,0x53,0,0x04,
nuclear@0:                        0x07,0x18,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0x89,0x33,0x85,0xce,
nuclear@0:                        13,
nuclear@0:                        254,255,0,255,1,255,245,255,255,0,
nuclear@0:                        255,255,90};
nuclear@0: 
nuclear@0: /* nil packets; beginning,middle,end */
nuclear@0: const int head1_2[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0xff,0x7b,0x23,0x17,
nuclear@0:                        1,
nuclear@0:                        0};
nuclear@0: const int head2_2[] = {0x4f,0x67,0x67,0x53,0,0x04,
nuclear@0:                        0x07,0x28,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0x5c,0x3f,0x66,0xcb,
nuclear@0:                        17,
nuclear@0:                        17,254,255,0,0,255,1,0,255,245,255,255,0,
nuclear@0:                        255,255,90,0};
nuclear@0: 
nuclear@0: /* large initial packet */
nuclear@0: const int head1_3[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0x01,0x27,0x31,0xaa,
nuclear@0:                        18,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,255,10};
nuclear@0: 
nuclear@0: const int head2_3[] = {0x4f,0x67,0x67,0x53,0,0x04,
nuclear@0:                        0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0x7f,0x4e,0x8a,0xd2,
nuclear@0:                        4,
nuclear@0:                        255,4,255,0};
nuclear@0: 
nuclear@0: 
nuclear@0: /* continuing packet test */
nuclear@0: const int head1_4[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0xff,0x7b,0x23,0x17,
nuclear@0:                        1,
nuclear@0:                        0};
nuclear@0: 
nuclear@0: const int head2_4[] = {0x4f,0x67,0x67,0x53,0,0x00,
nuclear@0:                        0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0xf8,0x3c,0x19,0x79,
nuclear@0:                        255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255};
nuclear@0: 
nuclear@0: const int head3_4[] = {0x4f,0x67,0x67,0x53,0,0x05,
nuclear@0:                        0x07,0x0c,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,2,0,0,0,
nuclear@0:                        0x38,0xe6,0xb6,0x28,
nuclear@0:                        6,
nuclear@0:                        255,220,255,4,255,0};
nuclear@0: 
nuclear@0: 
nuclear@0: /* spill expansion test */
nuclear@0: const int head1_4b[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                         0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                         0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                         0xff,0x7b,0x23,0x17,
nuclear@0:                         1,
nuclear@0:                         0};
nuclear@0: 
nuclear@0: const int head2_4b[] = {0x4f,0x67,0x67,0x53,0,0x00,
nuclear@0:                         0x07,0x10,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                         0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                         0xce,0x8f,0x17,0x1a,
nuclear@0:                         23,
nuclear@0:                         255,255,255,255,255,255,255,255,
nuclear@0:                         255,255,255,255,255,255,255,255,255,10,255,4,255,0,0};
nuclear@0: 
nuclear@0: 
nuclear@0: const int head3_4b[] = {0x4f,0x67,0x67,0x53,0,0x04,
nuclear@0:                         0x07,0x14,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                         0x01,0x02,0x03,0x04,2,0,0,0,
nuclear@0:                         0x9b,0xb2,0x50,0xa1,
nuclear@0:                         1,
nuclear@0:                         0};
nuclear@0: 
nuclear@0: /* page with the 255 segment limit */
nuclear@0: const int head1_5[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0xff,0x7b,0x23,0x17,
nuclear@0:                        1,
nuclear@0:                        0};
nuclear@0: 
nuclear@0: const int head2_5[] = {0x4f,0x67,0x67,0x53,0,0x00,
nuclear@0:                        0x07,0xfc,0x03,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0xed,0x2a,0x2e,0xa7,
nuclear@0:                        255,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10,10,
nuclear@0:                        10,10,10,10,10,10,10};
nuclear@0: 
nuclear@0: const int head3_5[] = {0x4f,0x67,0x67,0x53,0,0x04,
nuclear@0:                        0x07,0x00,0x04,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,2,0,0,0,
nuclear@0:                        0x6c,0x3b,0x82,0x3d,
nuclear@0:                        1,
nuclear@0:                        50};
nuclear@0: 
nuclear@0: 
nuclear@0: /* packet that overspans over an entire page */
nuclear@0: const int head1_6[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0xff,0x7b,0x23,0x17,
nuclear@0:                        1,
nuclear@0:                        0};
nuclear@0: 
nuclear@0: const int head2_6[] = {0x4f,0x67,0x67,0x53,0,0x00,
nuclear@0:                        0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0x68,0x22,0x7c,0x3d,
nuclear@0:                        255,
nuclear@0:                        100,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255};
nuclear@0: 
nuclear@0: const int head3_6[] = {0x4f,0x67,0x67,0x53,0,0x01,
nuclear@0:                        0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
nuclear@0:                        0x01,0x02,0x03,0x04,2,0,0,0,
nuclear@0:                        0xf4,0x87,0xba,0xf3,
nuclear@0:                        255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255};
nuclear@0: 
nuclear@0: const int head4_6[] = {0x4f,0x67,0x67,0x53,0,0x05,
nuclear@0:                        0x07,0x10,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,3,0,0,0,
nuclear@0:                        0xf7,0x2f,0x6c,0x60,
nuclear@0:                        5,
nuclear@0:                        254,255,4,255,0};
nuclear@0: 
nuclear@0: /* packet that overspans over an entire page */
nuclear@0: const int head1_7[] = {0x4f,0x67,0x67,0x53,0,0x02,
nuclear@0:                        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,0,0,0,0,
nuclear@0:                        0xff,0x7b,0x23,0x17,
nuclear@0:                        1,
nuclear@0:                        0};
nuclear@0: 
nuclear@0: const int head2_7[] = {0x4f,0x67,0x67,0x53,0,0x00,
nuclear@0:                        0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,1,0,0,0,
nuclear@0:                        0x68,0x22,0x7c,0x3d,
nuclear@0:                        255,
nuclear@0:                        100,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255,255,255,
nuclear@0:                        255,255,255,255,255,255};
nuclear@0: 
nuclear@0: const int head3_7[] = {0x4f,0x67,0x67,0x53,0,0x05,
nuclear@0:                        0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
nuclear@0:                        0x01,0x02,0x03,0x04,2,0,0,0,
nuclear@0:                        0xd4,0xe0,0x60,0xe5,
nuclear@0:                        1,
nuclear@0:                        0};
nuclear@0: 
nuclear@0: void test_pack(const int *pl, const int **headers, int byteskip,
nuclear@0:                int pageskip, int packetskip){
nuclear@0:   unsigned char *data=_ogg_malloc(1024*1024); /* for scripted test cases only */
nuclear@0:   long inptr=0;
nuclear@0:   long outptr=0;
nuclear@0:   long deptr=0;
nuclear@0:   long depacket=0;
nuclear@0:   long granule_pos=7,pageno=0;
nuclear@0:   int i,j,packets,pageout=pageskip;
nuclear@0:   int eosflag=0;
nuclear@0:   int bosflag=0;
nuclear@0: 
nuclear@0:   int byteskipcount=0;
nuclear@0: 
nuclear@0:   ogg_stream_reset(&os_en);
nuclear@0:   ogg_stream_reset(&os_de);
nuclear@0:   ogg_sync_reset(&oy);
nuclear@0: 
nuclear@0:   for(packets=0;packets<packetskip;packets++)
nuclear@0:     depacket+=pl[packets];
nuclear@0: 
nuclear@0:   for(packets=0;;packets++)if(pl[packets]==-1)break;
nuclear@0: 
nuclear@0:   for(i=0;i<packets;i++){
nuclear@0:     /* construct a test packet */
nuclear@0:     ogg_packet op;
nuclear@0:     int len=pl[i];
nuclear@0: 
nuclear@0:     op.packet=data+inptr;
nuclear@0:     op.bytes=len;
nuclear@0:     op.e_o_s=(pl[i+1]<0?1:0);
nuclear@0:     op.granulepos=granule_pos;
nuclear@0: 
nuclear@0:     granule_pos+=1024;
nuclear@0: 
nuclear@0:     for(j=0;j<len;j++)data[inptr++]=i+j;
nuclear@0: 
nuclear@0:     /* submit the test packet */
nuclear@0:     ogg_stream_packetin(&os_en,&op);
nuclear@0: 
nuclear@0:     /* retrieve any finished pages */
nuclear@0:     {
nuclear@0:       ogg_page og;
nuclear@0: 
nuclear@0:       while(ogg_stream_pageout(&os_en,&og)){
nuclear@0:         /* We have a page.  Check it carefully */
nuclear@0: 
nuclear@0:         fprintf(stderr,"%ld, ",pageno);
nuclear@0: 
nuclear@0:         if(headers[pageno]==NULL){
nuclear@0:           fprintf(stderr,"coded too many pages!\n");
nuclear@0:           exit(1);
nuclear@0:         }
nuclear@0: 
nuclear@0:         check_page(data+outptr,headers[pageno],&og);
nuclear@0: 
nuclear@0:         outptr+=og.body_len;
nuclear@0:         pageno++;
nuclear@0:         if(pageskip){
nuclear@0:           bosflag=1;
nuclear@0:           pageskip--;
nuclear@0:           deptr+=og.body_len;
nuclear@0:         }
nuclear@0: 
nuclear@0:         /* have a complete page; submit it to sync/decode */
nuclear@0: 
nuclear@0:         {
nuclear@0:           ogg_page og_de;
nuclear@0:           ogg_packet op_de,op_de2;
nuclear@0:           char *buf=ogg_sync_buffer(&oy,og.header_len+og.body_len);
nuclear@0:           char *next=buf;
nuclear@0:           byteskipcount+=og.header_len;
nuclear@0:           if(byteskipcount>byteskip){
nuclear@0:             memcpy(next,og.header,byteskipcount-byteskip);
nuclear@0:             next+=byteskipcount-byteskip;
nuclear@0:             byteskipcount=byteskip;
nuclear@0:           }
nuclear@0: 
nuclear@0:           byteskipcount+=og.body_len;
nuclear@0:           if(byteskipcount>byteskip){
nuclear@0:             memcpy(next,og.body,byteskipcount-byteskip);
nuclear@0:             next+=byteskipcount-byteskip;
nuclear@0:             byteskipcount=byteskip;
nuclear@0:           }
nuclear@0: 
nuclear@0:           ogg_sync_wrote(&oy,next-buf);
nuclear@0: 
nuclear@0:           while(1){
nuclear@0:             int ret=ogg_sync_pageout(&oy,&og_de);
nuclear@0:             if(ret==0)break;
nuclear@0:             if(ret<0)continue;
nuclear@0:             /* got a page.  Happy happy.  Verify that it's good. */
nuclear@0: 
nuclear@0:             fprintf(stderr,"(%d), ",pageout);
nuclear@0: 
nuclear@0:             check_page(data+deptr,headers[pageout],&og_de);
nuclear@0:             deptr+=og_de.body_len;
nuclear@0:             pageout++;
nuclear@0: 
nuclear@0:             /* submit it to deconstitution */
nuclear@0:             ogg_stream_pagein(&os_de,&og_de);
nuclear@0: 
nuclear@0:             /* packets out? */
nuclear@0:             while(ogg_stream_packetpeek(&os_de,&op_de2)>0){
nuclear@0:               ogg_stream_packetpeek(&os_de,NULL);
nuclear@0:               ogg_stream_packetout(&os_de,&op_de); /* just catching them all */
nuclear@0: 
nuclear@0:               /* verify peek and out match */
nuclear@0:               if(memcmp(&op_de,&op_de2,sizeof(op_de))){
nuclear@0:                 fprintf(stderr,"packetout != packetpeek! pos=%ld\n",
nuclear@0:                         depacket);
nuclear@0:                 exit(1);
nuclear@0:               }
nuclear@0: 
nuclear@0:               /* verify the packet! */
nuclear@0:               /* check data */
nuclear@0:               if(memcmp(data+depacket,op_de.packet,op_de.bytes)){
nuclear@0:                 fprintf(stderr,"packet data mismatch in decode! pos=%ld\n",
nuclear@0:                         depacket);
nuclear@0:                 exit(1);
nuclear@0:               }
nuclear@0:               /* check bos flag */
nuclear@0:               if(bosflag==0 && op_de.b_o_s==0){
nuclear@0:                 fprintf(stderr,"b_o_s flag not set on packet!\n");
nuclear@0:                 exit(1);
nuclear@0:               }
nuclear@0:               if(bosflag && op_de.b_o_s){
nuclear@0:                 fprintf(stderr,"b_o_s flag incorrectly set on packet!\n");
nuclear@0:                 exit(1);
nuclear@0:               }
nuclear@0:               bosflag=1;
nuclear@0:               depacket+=op_de.bytes;
nuclear@0: 
nuclear@0:               /* check eos flag */
nuclear@0:               if(eosflag){
nuclear@0:                 fprintf(stderr,"Multiple decoded packets with eos flag!\n");
nuclear@0:                 exit(1);
nuclear@0:               }
nuclear@0: 
nuclear@0:               if(op_de.e_o_s)eosflag=1;
nuclear@0: 
nuclear@0:               /* check granulepos flag */
nuclear@0:               if(op_de.granulepos!=-1){
nuclear@0:                 fprintf(stderr," granule:%ld ",(long)op_de.granulepos);
nuclear@0:               }
nuclear@0:             }
nuclear@0:           }
nuclear@0:         }
nuclear@0:       }
nuclear@0:     }
nuclear@0:   }
nuclear@0:   _ogg_free(data);
nuclear@0:   if(headers[pageno]!=NULL){
nuclear@0:     fprintf(stderr,"did not write last page!\n");
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   if(headers[pageout]!=NULL){
nuclear@0:     fprintf(stderr,"did not decode last page!\n");
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   if(inptr!=outptr){
nuclear@0:     fprintf(stderr,"encoded page data incomplete!\n");
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   if(inptr!=deptr){
nuclear@0:     fprintf(stderr,"decoded page data incomplete!\n");
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   if(inptr!=depacket){
nuclear@0:     fprintf(stderr,"decoded packet data incomplete!\n");
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   if(!eosflag){
nuclear@0:     fprintf(stderr,"Never got a packet with EOS set!\n");
nuclear@0:     exit(1);
nuclear@0:   }
nuclear@0:   fprintf(stderr,"ok.\n");
nuclear@0: }
nuclear@0: 
nuclear@0: int main(void){
nuclear@0: 
nuclear@0:   ogg_stream_init(&os_en,0x04030201);
nuclear@0:   ogg_stream_init(&os_de,0x04030201);
nuclear@0:   ogg_sync_init(&oy);
nuclear@0: 
nuclear@0:   /* Exercise each code path in the framing code.  Also verify that
nuclear@0:      the checksums are working.  */
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* 17 only */
nuclear@0:     const int packets[]={17, -1};
nuclear@0:     const int *headret[]={head1_0,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing single page encoding... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* 17, 254, 255, 256, 500, 510, 600 byte, pad */
nuclear@0:     const int packets[]={17, 254, 255, 256, 500, 510, 600, -1};
nuclear@0:     const int *headret[]={head1_1,head2_1,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing basic page encoding... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* nil packets; beginning,middle,end */
nuclear@0:     const int packets[]={0,17, 254, 255, 0, 256, 0, 500, 510, 600, 0, -1};
nuclear@0:     const int *headret[]={head1_2,head2_2,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing basic nil packets... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* large initial packet */
nuclear@0:     const int packets[]={4345,259,255,-1};
nuclear@0:     const int *headret[]={head1_3,head2_3,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing initial-packet lacing > 4k... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* continuing packet test; with page spill expansion, we have to
nuclear@0:        overflow the lacing table. */
nuclear@0:     const int packets[]={0,65500,259,255,-1};
nuclear@0:     const int *headret[]={head1_4,head2_4,head3_4,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing single packet page span... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* spill expand packet test */
nuclear@0:     const int packets[]={0,4345,259,255,0,0,-1};
nuclear@0:     const int *headret[]={head1_4b,head2_4b,head3_4b,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing page spill expansion... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   /* page with the 255 segment limit */
nuclear@0:   {
nuclear@0: 
nuclear@0:     const int packets[]={0,10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,10,
nuclear@0:                    10,10,10,10,10,10,10,50,-1};
nuclear@0:     const int *headret[]={head1_5,head2_5,head3_5,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing max packet segments... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* packet that overspans over an entire page */
nuclear@0:     const int packets[]={0,100,130049,259,255,-1};
nuclear@0:     const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing very large packets... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* test for the libogg 1.1.1 resync in large continuation bug
nuclear@0:        found by Josh Coalson)  */
nuclear@0:     const int packets[]={0,100,130049,259,255,-1};
nuclear@0:     const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing continuation resync in very large packets... ");
nuclear@0:     test_pack(packets,headret,100,2,3);
nuclear@0:   }
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* term only page.  why not? */
nuclear@0:     const int packets[]={0,100,64770,-1};
nuclear@0:     const int *headret[]={head1_7,head2_7,head3_7,NULL};
nuclear@0: 
nuclear@0:     fprintf(stderr,"testing zero data page (1 nil packet)... ");
nuclear@0:     test_pack(packets,headret,0,0,0);
nuclear@0:   }
nuclear@0: 
nuclear@0: 
nuclear@0: 
nuclear@0:   {
nuclear@0:     /* build a bunch of pages for testing */
nuclear@0:     unsigned char *data=_ogg_malloc(1024*1024);
nuclear@0:     int pl[]={0, 1,1,98,4079, 1,1,2954,2057, 76,34,912,0,234,1000,1000, 1000,300,-1};
nuclear@0:     int inptr=0,i,j;
nuclear@0:     ogg_page og[5];
nuclear@0: 
nuclear@0:     ogg_stream_reset(&os_en);
nuclear@0: 
nuclear@0:     for(i=0;pl[i]!=-1;i++){
nuclear@0:       ogg_packet op;
nuclear@0:       int len=pl[i];
nuclear@0: 
nuclear@0:       op.packet=data+inptr;
nuclear@0:       op.bytes=len;
nuclear@0:       op.e_o_s=(pl[i+1]<0?1:0);
nuclear@0:       op.granulepos=(i+1)*1000;
nuclear@0: 
nuclear@0:       for(j=0;j<len;j++)data[inptr++]=i+j;
nuclear@0:       ogg_stream_packetin(&os_en,&op);
nuclear@0:     }
nuclear@0: 
nuclear@0:     _ogg_free(data);
nuclear@0: 
nuclear@0:     /* retrieve finished pages */
nuclear@0:     for(i=0;i<5;i++){
nuclear@0:       if(ogg_stream_pageout(&os_en,&og[i])==0){
nuclear@0:         fprintf(stderr,"Too few pages output building sync tests!\n");
nuclear@0:         exit(1);
nuclear@0:       }
nuclear@0:       copy_page(&og[i]);
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* Test lost pages on pagein/packetout: no rollback */
nuclear@0:     {
nuclear@0:       ogg_page temp;
nuclear@0:       ogg_packet test;
nuclear@0: 
nuclear@0:       fprintf(stderr,"Testing loss of pages... ");
nuclear@0: 
nuclear@0:       ogg_sync_reset(&oy);
nuclear@0:       ogg_stream_reset(&os_de);
nuclear@0:       for(i=0;i<5;i++){
nuclear@0:         memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header,
nuclear@0:                og[i].header_len);
nuclear@0:         ogg_sync_wrote(&oy,og[i].header_len);
nuclear@0:         memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len);
nuclear@0:         ogg_sync_wrote(&oy,og[i].body_len);
nuclear@0:       }
nuclear@0: 
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       /* skip */
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0: 
nuclear@0:       /* do we get the expected results/packets? */
nuclear@0: 
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,0,0,0);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,1,1,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,1,2,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,98,3,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,4079,4,5000);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=-1){
nuclear@0:         fprintf(stderr,"Error: loss of page did not return error\n");
nuclear@0:         exit(1);
nuclear@0:       }
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,76,9,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,34,10,-1);
nuclear@0:       fprintf(stderr,"ok.\n");
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* Test lost pages on pagein/packetout: rollback with continuation */
nuclear@0:     {
nuclear@0:       ogg_page temp;
nuclear@0:       ogg_packet test;
nuclear@0: 
nuclear@0:       fprintf(stderr,"Testing loss of pages (rollback required)... ");
nuclear@0: 
nuclear@0:       ogg_sync_reset(&oy);
nuclear@0:       ogg_stream_reset(&os_de);
nuclear@0:       for(i=0;i<5;i++){
nuclear@0:         memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header,
nuclear@0:                og[i].header_len);
nuclear@0:         ogg_sync_wrote(&oy,og[i].header_len);
nuclear@0:         memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len);
nuclear@0:         ogg_sync_wrote(&oy,og[i].body_len);
nuclear@0:       }
nuclear@0: 
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       /* skip */
nuclear@0:       ogg_sync_pageout(&oy,&temp);
nuclear@0:       ogg_stream_pagein(&os_de,&temp);
nuclear@0: 
nuclear@0:       /* do we get the expected results/packets? */
nuclear@0: 
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,0,0,0);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,1,1,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,1,2,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,98,3,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,4079,4,5000);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,1,5,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,1,6,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,2954,7,-1);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,2057,8,9000);
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=-1){
nuclear@0:         fprintf(stderr,"Error: loss of page did not return error\n");
nuclear@0:         exit(1);
nuclear@0:       }
nuclear@0:       if(ogg_stream_packetout(&os_de,&test)!=1)error();
nuclear@0:       checkpacket(&test,300,17,18000);
nuclear@0:       fprintf(stderr,"ok.\n");
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* the rest only test sync */
nuclear@0:     {
nuclear@0:       ogg_page og_de;
nuclear@0:       /* Test fractional page inputs: incomplete capture */
nuclear@0:       fprintf(stderr,"Testing sync on partial inputs... ");
nuclear@0:       ogg_sync_reset(&oy);
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
nuclear@0:              3);
nuclear@0:       ogg_sync_wrote(&oy,3);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       /* Test fractional page inputs: incomplete fixed header */
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+3,
nuclear@0:              20);
nuclear@0:       ogg_sync_wrote(&oy,20);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       /* Test fractional page inputs: incomplete header */
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+23,
nuclear@0:              5);
nuclear@0:       ogg_sync_wrote(&oy,5);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       /* Test fractional page inputs: incomplete body */
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+28,
nuclear@0:              og[1].header_len-28);
nuclear@0:       ogg_sync_wrote(&oy,og[1].header_len-28);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,1000);
nuclear@0:       ogg_sync_wrote(&oy,1000);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body+1000,
nuclear@0:              og[1].body_len-1000);
nuclear@0:       ogg_sync_wrote(&oy,og[1].body_len-1000);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0: 
nuclear@0:       fprintf(stderr,"ok.\n");
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* Test fractional page inputs: page + incomplete capture */
nuclear@0:     {
nuclear@0:       ogg_page og_de;
nuclear@0:       fprintf(stderr,"Testing sync on 1+partial inputs... ");
nuclear@0:       ogg_sync_reset(&oy);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
nuclear@0:              og[1].header_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].header_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
nuclear@0:              og[1].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].body_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
nuclear@0:              20);
nuclear@0:       ogg_sync_wrote(&oy,20);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+20,
nuclear@0:              og[1].header_len-20);
nuclear@0:       ogg_sync_wrote(&oy,og[1].header_len-20);
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
nuclear@0:              og[1].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].body_len);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0: 
nuclear@0:       fprintf(stderr,"ok.\n");
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* Test recapture: garbage + page */
nuclear@0:     {
nuclear@0:       ogg_page og_de;
nuclear@0:       fprintf(stderr,"Testing search for capture... ");
nuclear@0:       ogg_sync_reset(&oy);
nuclear@0: 
nuclear@0:       /* 'garbage' */
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
nuclear@0:              og[1].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].body_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
nuclear@0:              og[1].header_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].header_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
nuclear@0:              og[1].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].body_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
nuclear@0:              20);
nuclear@0:       ogg_sync_wrote(&oy,20);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header+20,
nuclear@0:              og[2].header_len-20);
nuclear@0:       ogg_sync_wrote(&oy,og[2].header_len-20);
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body,
nuclear@0:              og[2].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[2].body_len);
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0: 
nuclear@0:       fprintf(stderr,"ok.\n");
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* Test recapture: page + garbage + page */
nuclear@0:     {
nuclear@0:       ogg_page og_de;
nuclear@0:       fprintf(stderr,"Testing recapture... ");
nuclear@0:       ogg_sync_reset(&oy);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
nuclear@0:              og[1].header_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].header_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
nuclear@0:              og[1].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[1].body_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
nuclear@0:              og[2].header_len);
nuclear@0:       ogg_sync_wrote(&oy,og[2].header_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header,
nuclear@0:              og[2].header_len);
nuclear@0:       ogg_sync_wrote(&oy,og[2].header_len);
nuclear@0: 
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body,
nuclear@0:              og[2].body_len-5);
nuclear@0:       ogg_sync_wrote(&oy,og[2].body_len-5);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[3].header_len),og[3].header,
nuclear@0:              og[3].header_len);
nuclear@0:       ogg_sync_wrote(&oy,og[3].header_len);
nuclear@0: 
nuclear@0:       memcpy(ogg_sync_buffer(&oy,og[3].body_len),og[3].body,
nuclear@0:              og[3].body_len);
nuclear@0:       ogg_sync_wrote(&oy,og[3].body_len);
nuclear@0: 
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)>0)error();
nuclear@0:       if(ogg_sync_pageout(&oy,&og_de)<=0)error();
nuclear@0: 
nuclear@0:       fprintf(stderr,"ok.\n");
nuclear@0:     }
nuclear@0: 
nuclear@0:     /* Free page data that was previously copied */
nuclear@0:     {
nuclear@0:       for(i=0;i<5;i++){
nuclear@0:         free_page(&og[i]);
nuclear@0:       }
nuclear@0:     }
nuclear@0:   }
nuclear@0: 
nuclear@0:   return(0);
nuclear@0: }
nuclear@0: 
nuclear@0: #endif