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