| /******************************************************************** |
| * * |
| * THIS FILE IS PART OF THE Ogg CONTAINER SOURCE CODE. * |
| * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
| * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
| * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
| * * |
| * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2018 * |
| * by the Xiph.Org Foundation http://www.xiph.org/ * |
| * * |
| ******************************************************************** |
| |
| function: code raw packets into framed OggSquish stream and |
| decode Ogg streams back into raw packets |
| |
| 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. |
| |
| ********************************************************************/ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <stdlib.h> |
| #include <limits.h> |
| #include <string.h> |
| #include <ogg/ogg.h> |
| |
| /* A complete description of Ogg framing exists in docs/framing.html */ |
| |
| int ogg_page_version(const ogg_page *og){ |
| return((int)(og->header[4])); |
| } |
| |
| int ogg_page_continued(const ogg_page *og){ |
| return((int)(og->header[5]&0x01)); |
| } |
| |
| int ogg_page_bos(const ogg_page *og){ |
| return((int)(og->header[5]&0x02)); |
| } |
| |
| int ogg_page_eos(const ogg_page *og){ |
| return((int)(og->header[5]&0x04)); |
| } |
| |
| ogg_int64_t ogg_page_granulepos(const ogg_page *og){ |
| unsigned char *page=og->header; |
| ogg_uint64_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((ogg_int64_t)granulepos); |
| } |
| |
| int ogg_page_serialno(const ogg_page *og){ |
| return((int)((ogg_uint32_t)og->header[14]) | |
| ((ogg_uint32_t)og->header[15]<<8) | |
| ((ogg_uint32_t)og->header[16]<<16) | |
| ((ogg_uint32_t)og->header[17]<<24)); |
| } |
| |
| long ogg_page_pageno(const ogg_page *og){ |
| return((long)((ogg_uint32_t)og->header[18]) | |
| ((ogg_uint32_t)og->header[19]<<8) | |
| ((ogg_uint32_t)og->header[20]<<16) | |
| ((ogg_uint32_t)og->header[21]<<24)); |
| } |
| |
| |
| |
| /* returns the number of packets that are completed on this page (if |
| the leading packet is begun on a previous page, but ends on this |
| page, it's counted */ |
| |
| /* NOTE: |
| If a page consists of a packet begun on a previous page, and a new |
| packet begun (but not completed) on this page, the return will be: |
| ogg_page_packets(page) ==1, |
| ogg_page_continued(page) !=0 |
| |
| If a page happens to be a single packet that was begun on a |
| previous page, and spans to the next page (in the case of a three or |
| more page packet), the return will be: |
| ogg_page_packets(page) ==0, |
| ogg_page_continued(page) !=0 |
| */ |
| |
| int ogg_page_packets(const ogg_page *og){ |
| int i,n=og->header[26],count=0; |
| for(i=0;i<n;i++) |
| if(og->header[27+i]<255)count++; |
| return(count); |
| } |
| |
| |
| #if 0 |
| /* helper to initialize lookup for direct-table CRC (illustrative; we |
| use the static init in crctable.h) */ |
| |
| static void _ogg_crc_init(){ |
| int i, j; |
| ogg_uint32_t polynomial, crc; |
| polynomial = 0x04c11db7; /* The same as the ethernet generator |
| polynomial, although we use an |
| unreflected alg and an init/final |
| of 0, not 0xffffffff */ |
| for (i = 0; i <= 0xFF; i++){ |
| crc = i << 24; |
| |
| for (j = 0; j < 8; j++) |
| crc = (crc << 1) ^ (crc & (1 << 31) ? polynomial : 0); |
| |
| crc_lookup[0][i] = crc; |
| } |
| |
| for (i = 0; i <= 0xFF; i++) |
| for (j = 1; j < 8; j++) |
| crc_lookup[j][i] = crc_lookup[0][(crc_lookup[j - 1][i] >> 24) & 0xFF] ^ (crc_lookup[j - 1][i] << 8); |
| } |
| #endif |
| |
| #include "crctable.h" |
| |
| /* init the encode/decode logical stream state */ |
| |
| int ogg_stream_init(ogg_stream_state *os,int serialno){ |
| if(os){ |
| memset(os,0,sizeof(*os)); |
| os->body_storage=16*1024; |
| os->lacing_storage=1024; |
| |
| os->body_data=_ogg_malloc(os->body_storage*sizeof(*os->body_data)); |
| os->lacing_vals=_ogg_malloc(os->lacing_storage*sizeof(*os->lacing_vals)); |
| os->granule_vals=_ogg_malloc(os->lacing_storage*sizeof(*os->granule_vals)); |
| |
| if(!os->body_data || !os->lacing_vals || !os->granule_vals){ |
| ogg_stream_clear(os); |
| return -1; |
| } |
| |
| os->serialno=serialno; |
| |
| return(0); |
| } |
| return(-1); |
| } |
| |
| /* async/delayed error detection for the ogg_stream_state */ |
| int ogg_stream_check(ogg_stream_state *os){ |
| if(!os || !os->body_data) return -1; |
| return 0; |
| } |
| |
| /* _clear does not free os, only the non-flat storage within */ |
| int ogg_stream_clear(ogg_stream_state *os){ |
| if(os){ |
| if(os->body_data)_ogg_free(os->body_data); |
| if(os->lacing_vals)_ogg_free(os->lacing_vals); |
| if(os->granule_vals)_ogg_free(os->granule_vals); |
| |
| memset(os,0,sizeof(*os)); |
| } |
| return(0); |
| } |
| |
| int ogg_stream_destroy(ogg_stream_state *os){ |
| if(os){ |
| ogg_stream_clear(os); |
| _ogg_free(os); |
| } |
| return(0); |
| } |
| |
| /* Helpers for ogg_stream_encode; this keeps the structure and |
| what's happening fairly clear */ |
| |
| static int _os_body_expand(ogg_stream_state *os,long needed){ |
| if(os->body_storage-needed<=os->body_fill){ |
| long body_storage; |
| void *ret; |
| if(os->body_storage>LONG_MAX-needed){ |
| ogg_stream_clear(os); |
| return -1; |
| } |
| body_storage=os->body_storage+needed; |
| if(body_storage<LONG_MAX-1024)body_storage+=1024; |
| ret=_ogg_realloc(os->body_data,body_storage*sizeof(*os->body_data)); |
| if(!ret){ |
| ogg_stream_clear(os); |
| return -1; |
| } |
| os->body_storage=body_storage; |
| os->body_data=ret; |
| } |
| return 0; |
| } |
| |
| static int _os_lacing_expand(ogg_stream_state *os,long needed){ |
| if(os->lacing_storage-needed<=os->lacing_fill){ |
| long lacing_storage; |
| void *ret; |
| if(os->lacing_storage>LONG_MAX-needed){ |
| ogg_stream_clear(os); |
| return -1; |
| } |
| lacing_storage=os->lacing_storage+needed; |
| if(lacing_storage<LONG_MAX-32)lacing_storage+=32; |
| ret=_ogg_realloc(os->lacing_vals,lacing_storage*sizeof(*os->lacing_vals)); |
| if(!ret){ |
| ogg_stream_clear(os); |
| return -1; |
| } |
| os->lacing_vals=ret; |
| ret=_ogg_realloc(os->granule_vals,lacing_storage* |
| sizeof(*os->granule_vals)); |
| if(!ret){ |
| ogg_stream_clear(os); |
| return -1; |
| } |
| os->granule_vals=ret; |
| os->lacing_storage=lacing_storage; |
| } |
| return 0; |
| } |
| |
| /* checksum the page */ |
| /* Direct table CRC; note that this will be faster in the future if we |
| perform the checksum simultaneously with other copies */ |
| |
| static ogg_uint32_t _os_update_crc(ogg_uint32_t crc, unsigned char *buffer, int size){ |
| while (size>=8){ |
| crc^=((ogg_uint32_t)buffer[0]<<24)|((ogg_uint32_t)buffer[1]<<16)|((ogg_uint32_t)buffer[2]<<8)|((ogg_uint32_t)buffer[3]); |
| |
| crc=crc_lookup[7][ crc>>24 ]^crc_lookup[6][(crc>>16)&0xFF]^ |
| crc_lookup[5][(crc>> 8)&0xFF]^crc_lookup[4][ crc &0xFF]^ |
| crc_lookup[3][buffer[4] ]^crc_lookup[2][buffer[5] ]^ |
| crc_lookup[1][buffer[6] ]^crc_lookup[0][buffer[7] ]; |
| |
| buffer+=8; |
| size-=8; |
| } |
| |
| while (size--) |
| crc=(crc<<8)^crc_lookup[0][((crc >> 24)&0xff)^*buffer++]; |
| return crc; |
| } |
| |
| void ogg_page_checksum_set(ogg_page *og){ |
| if(og){ |
| ogg_uint32_t crc_reg=0; |
| |
| /* safety; needed for API behavior, but not framing code */ |
| og->header[22]=0; |
| og->header[23]=0; |
| og->header[24]=0; |
| og->header[25]=0; |
| |
| crc_reg=_os_update_crc(crc_reg,og->header,og->header_len); |
| crc_reg=_os_update_crc(crc_reg,og->body,og->body_len); |
| |
| og->header[22]=(unsigned char)(crc_reg&0xff); |
| og->header[23]=(unsigned char)((crc_reg>>8)&0xff); |
| og->header[24]=(unsigned char)((crc_reg>>16)&0xff); |
| og->header[25]=(unsigned char)((crc_reg>>24)&0xff); |
| } |
| } |
| |
| /* submit data to the internal buffer of the framing engine */ |
| int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov, int count, |
| long e_o_s, ogg_int64_t granulepos){ |
| |
| long bytes = 0, lacing_vals; |
| int i; |
| |
| if(ogg_stream_check(os)) return -1; |
| if(!iov) return 0; |
| |
| for (i = 0; i < count; ++i){ |
| if(iov[i].iov_len>LONG_MAX) return -1; |
| if(bytes>LONG_MAX-(long)iov[i].iov_len) return -1; |
| bytes += (long)iov[i].iov_len; |
| } |
| lacing_vals=bytes/255+1; |
| |
| if(os->body_returned){ |
| /* advance packet data according to the body_returned pointer. We |
| had to keep it around to return a pointer into the buffer last |
| call */ |
| |
| os->body_fill-=os->body_returned; |
| if(os->body_fill) |
| memmove(os->body_data,os->body_data+os->body_returned, |
| os->body_fill); |
| os->body_returned=0; |
| } |
| |
| /* make sure we have the buffer storage */ |
| if(_os_body_expand(os,bytes) || _os_lacing_expand(os,lacing_vals)) |
| return -1; |
| |
| /* Copy in the submitted packet. Yes, the copy is a waste; this is |
| the liability of overly clean abstraction for the time being. It |
| will actually be fairly easy to eliminate the extra copy in the |
| future */ |
| |
| for (i = 0; i < count; ++i) { |
| memcpy(os->body_data+os->body_fill, iov[i].iov_base, iov[i].iov_len); |
| os->body_fill += (int)iov[i].iov_len; |
| } |
| |
| /* Store lacing vals for this packet */ |
| for(i=0;i<lacing_vals-1;i++){ |
| os->lacing_vals[os->lacing_fill+i]=255; |
| os->granule_vals[os->lacing_fill+i]=os->granulepos; |
| } |
| os->lacing_vals[os->lacing_fill+i]=bytes%255; |
| os->granulepos=os->granule_vals[os->lacing_fill+i]=granulepos; |
| |
| /* flag the first segment as the beginning of the packet */ |
| os->lacing_vals[os->lacing_fill]|= 0x100; |
| |
| os->lacing_fill+=lacing_vals; |
| |
| /* for the sake of completeness */ |
| os->packetno++; |
| |
| if(e_o_s)os->e_o_s=1; |
| |
| return(0); |
| } |
| |
| int ogg_stream_packetin(ogg_stream_state *os,ogg_packet *op){ |
| ogg_iovec_t iov; |
| iov.iov_base = op->packet; |
| iov.iov_len = op->bytes; |
| return ogg_stream_iovecin(os, &iov, 1, op->e_o_s, op->granulepos); |
| } |
| |
| /* Conditionally flush a page; force==0 will only flush nominal-size |
| pages, force==1 forces us to flush a page regardless of page size |
| so long as there's any data available at all. */ |
| static int ogg_stream_flush_i(ogg_stream_state *os,ogg_page *og, int force, int nfill){ |
| int i; |
| int vals=0; |
| int maxvals=(os->lacing_fill>255?255:os->lacing_fill); |
| int bytes=0; |
| long acc=0; |
| ogg_int64_t granule_pos=-1; |
| |
| if(ogg_stream_check(os)) return(0); |
| if(maxvals==0) return(0); |
| |
| /* construct a page */ |
| /* decide how many segments to include */ |
| |
| /* If this is the initial header case, the first page must only include |
| the initial header packet */ |
| if(os->b_o_s==0){ /* 'initial header page' case */ |
| granule_pos=0; |
| for(vals=0;vals<maxvals;vals++){ |
| if((os->lacing_vals[vals]&0x0ff)<255){ |
| vals++; |
| break; |
| } |
| } |
| }else{ |
| |
| /* The extra packets_done, packet_just_done logic here attempts to do two things: |
| 1) Don't unnecessarily span pages. |
| 2) Unless necessary, don't flush pages if there are less than four packets on |
| them; this expands page size to reduce unnecessary overhead if incoming packets |
| are large. |
| These are not necessary behaviors, just 'always better than naive flushing' |
| without requiring an application to explicitly request a specific optimized |
| behavior. We'll want an explicit behavior setup pathway eventually as well. */ |
| |
| int packets_done=0; |
| int packet_just_done=0; |
| for(vals=0;vals<maxvals;vals++){ |
| if(acc>nfill && packet_just_done>=4){ |
| force=1; |
| break; |
| } |
| acc+=os->lacing_vals[vals]&0x0ff; |
| if((os->lacing_vals[vals]&0xff)<255){ |
| granule_pos=os->granule_vals[vals]; |
| packet_just_done=++packets_done; |
| }else |
| packet_just_done=0; |
| } |
| if(vals==255)force=1; |
| } |
| |
| if(!force) return(0); |
| |
| /* construct the header in temp storage */ |
| memcpy(os->header,"OggS",4); |
| |
| /* stream structure version */ |
| os->header[4]=0x00; |
| |
| /* continued packet flag? */ |
| os->header[5]=0x00; |
| if((os->lacing_vals[0]&0x100)==0)os->header[5]|=0x01; |
| /* first page flag? */ |
| if(os->b_o_s==0)os->header[5]|=0x02; |
| /* last page flag? */ |
| if(os->e_o_s && os->lacing_fill==vals)os->header[5]|=0x04; |
| os->b_o_s=1; |
| |
| /* 64 bits of PCM position */ |
| for(i=6;i<14;i++){ |
| os->header[i]=(unsigned char)(granule_pos&0xff); |
| granule_pos>>=8; |
| } |
| |
| /* 32 bits of stream serial number */ |
| { |
| long serialno=os->serialno; |
| for(i=14;i<18;i++){ |
| os->header[i]=(unsigned char)(serialno&0xff); |
| serialno>>=8; |
| } |
| } |
| |
| /* 32 bits of page counter (we have both counter and page header |
| because this val can roll over) */ |
| if(os->pageno==-1)os->pageno=0; /* because someone called |
| stream_reset; this would be a |
| strange thing to do in an |
| encode stream, but it has |
| plausible uses */ |
| { |
| long pageno=os->pageno++; |
| for(i=18;i<22;i++){ |
| os->header[i]=(unsigned char)(pageno&0xff); |
| pageno>>=8; |
| } |
| } |
| |
| /* zero for computation; filled in later */ |
| os->header[22]=0; |
| os->header[23]=0; |
| os->header[24]=0; |
| os->header[25]=0; |
| |
| /* segment table */ |
| os->header[26]=(unsigned char)(vals&0xff); |
| for(i=0;i<vals;i++) |
| bytes+=os->header[i+27]=(unsigned char)(os->lacing_vals[i]&0xff); |
| |
| /* set pointers in the ogg_page struct */ |
| og->header=os->header; |
| og->header_len=os->header_fill=vals+27; |
| og->body=os->body_data+os->body_returned; |
| og->body_len=bytes; |
| |
| /* advance the lacing data and set the body_returned pointer */ |
| |
| os->lacing_fill-=vals; |
| memmove(os->lacing_vals,os->lacing_vals+vals,os->lacing_fill*sizeof(*os->lacing_vals)); |
| memmove(os->granule_vals,os->granule_vals+vals,os->lacing_fill*sizeof(*os->granule_vals)); |
| os->body_returned+=bytes; |
| |
| /* calculate the checksum */ |
| |
| ogg_page_checksum_set(og); |
| |
| /* done */ |
| return(1); |
| } |
| |
| /* This will flush remaining packets into a page (returning nonzero), |
| even if there is not enough data to trigger a flush normally |
| (undersized page). If there are no packets or partial packets to |
| flush, ogg_stream_flush returns 0. Note that ogg_stream_flush will |
| try to flush a normal sized page like ogg_stream_pageout; a call to |
| ogg_stream_flush does not guarantee that all packets have flushed. |
| Only a return value of 0 from ogg_stream_flush indicates all packet |
| data is flushed into pages. |
| |
| since ogg_stream_flush will flush the last page in a stream even if |
| it's undersized, you almost certainly want to use ogg_stream_pageout |
| (and *not* ogg_stream_flush) unless you specifically need to flush |
| a page regardless of size in the middle of a stream. */ |
| |
| int ogg_stream_flush(ogg_stream_state *os,ogg_page *og){ |
| return ogg_stream_flush_i(os,og,1,4096); |
| } |
| |
| /* Like the above, but an argument is provided to adjust the nominal |
| page size for applications which are smart enough to provide their |
| own delay based flushing */ |
| |
| int ogg_stream_flush_fill(ogg_stream_state *os,ogg_page *og, int nfill){ |
| return ogg_stream_flush_i(os,og,1,nfill); |
| } |
| |
| /* This constructs pages from buffered packet segments. The pointers |
| returned are to static buffers; do not free. The returned buffers are |
| good only until the next call (using the same ogg_stream_state) */ |
| |
| int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og){ |
| int force=0; |
| if(ogg_stream_check(os)) return 0; |
| |
| if((os->e_o_s&&os->lacing_fill) || /* 'were done, now flush' case */ |
| (os->lacing_fill&&!os->b_o_s)) /* 'initial header page' case */ |
| force=1; |
| |
| return(ogg_stream_flush_i(os,og,force,4096)); |
| } |
| |
| /* Like the above, but an argument is provided to adjust the nominal |
| page size for applications which are smart enough to provide their |
| own delay based flushing */ |
| |
| int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill){ |
| int force=0; |
| if(ogg_stream_check(os)) return 0; |
| |
| if((os->e_o_s&&os->lacing_fill) || /* 'were done, now flush' case */ |
| (os->lacing_fill&&!os->b_o_s)) /* 'initial header page' case */ |
| force=1; |
| |
| return(ogg_stream_flush_i(os,og,force,nfill)); |
| } |
| |
| int ogg_stream_eos(ogg_stream_state *os){ |
| if(ogg_stream_check(os)) return 1; |
| return os->e_o_s; |
| } |
| |
| /* DECODING PRIMITIVES: packet streaming layer **********************/ |
| |
| /* This has two layers to place more of the multi-serialno and paging |
| control in the application's hands. First, we expose a data buffer |
| using ogg_sync_buffer(). The app either copies into the |
| buffer, or passes it directly to read(), etc. We then call |
| ogg_sync_wrote() to tell how many bytes we just added. |
| |
| Pages are returned (pointers into the buffer in ogg_sync_state) |
| by ogg_sync_pageout(). The page is then submitted to |
| ogg_stream_pagein() along with the appropriate |
| ogg_stream_state* (ie, matching serialno). We then get raw |
| packets out calling ogg_stream_packetout() with a |
| ogg_stream_state. */ |
| |
| /* initialize the struct to a known state */ |
| int ogg_sync_init(ogg_sync_state *oy){ |
| if(oy){ |
| oy->storage = -1; /* used as a readiness flag */ |
| memset(oy,0,sizeof(*oy)); |
| } |
| return(0); |
| } |
| |
| /* clear non-flat storage within */ |
| int ogg_sync_clear(ogg_sync_state *oy){ |
| if(oy){ |
| if(oy->data)_ogg_free(oy->data); |
| memset(oy,0,sizeof(*oy)); |
| } |
| return(0); |
| } |
| |
| int ogg_sync_destroy(ogg_sync_state *oy){ |
| if(oy){ |
| ogg_sync_clear(oy); |
| _ogg_free(oy); |
| } |
| return(0); |
| } |
| |
| int ogg_sync_check(ogg_sync_state *oy){ |
| if(oy->storage<0) return -1; |
| return 0; |
| } |
| |
| char *ogg_sync_buffer(ogg_sync_state *oy, long size){ |
| if(ogg_sync_check(oy)) return NULL; |
| |
| /* first, clear out any space that has been previously returned */ |
| if(oy->returned){ |
| oy->fill-=oy->returned; |
| if(oy->fill>0) |
| memmove(oy->data,oy->data+oy->returned,oy->fill); |
| oy->returned=0; |
| } |
| |
| if(size>oy->storage-oy->fill){ |
| /* We need to extend the internal buffer */ |
| long newsize=size+oy->fill+4096; /* an extra page to be nice */ |
| void *ret; |
| |
| if(oy->data) |
| ret=_ogg_realloc(oy->data,newsize); |
| else |
| ret=_ogg_malloc(newsize); |
| if(!ret){ |
| ogg_sync_clear(oy); |
| return NULL; |
| } |
| oy->data=ret; |
| oy->storage=newsize; |
| } |
| |
| /* expose a segment at least as large as requested at the fill mark */ |
| return((char *)oy->data+oy->fill); |
| } |
| |
| int ogg_sync_wrote(ogg_sync_state *oy, long bytes){ |
| if(ogg_sync_check(oy))return -1; |
| if(oy->fill+bytes>oy->storage)return -1; |
| oy->fill+=bytes; |
| return(0); |
| } |
| |
| /* sync the stream. This is meant to be useful for finding page |
| boundaries. |
| |
| return values for this: |
| -n) skipped n bytes |
| 0) page not ready; more data (no bytes skipped) |
| n) page synced at current location; page length n bytes |
| |
| */ |
| |
| long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){ |
| unsigned char *page=oy->data+oy->returned; |
| unsigned char *next; |
| long bytes=oy->fill-oy->returned; |
| |
| if(ogg_sync_check(oy))return 0; |
| |
| if(oy->headerbytes==0){ |
| int headerbytes,i; |
| if(bytes<27)return(0); /* not enough for a header */ |
| |
| /* verify capture pattern */ |
| if(memcmp(page,"OggS",4))goto sync_fail; |
| |
| headerbytes=page[26]+27; |
| if(bytes<headerbytes)return(0); /* not enough for header + seg table */ |
| |
| /* count up body length in the segment table */ |
| |
| for(i=0;i<page[26];i++) |
| oy->bodybytes+=page[27+i]; |
| oy->headerbytes=headerbytes; |
| } |
| |
| if(oy->bodybytes+oy->headerbytes>bytes)return(0); |
| |
| /* The whole test page is buffered. Verify the checksum */ |
| { |
| /* Grab the checksum bytes, set the header field to zero */ |
| char chksum[4]; |
| ogg_page log; |
| |
| memcpy(chksum,page+22,4); |
| memset(page+22,0,4); |
| |
| /* set up a temp page struct and recompute the checksum */ |
| log.header=page; |
| log.header_len=oy->headerbytes; |
| log.body=page+oy->headerbytes; |
| log.body_len=oy->bodybytes; |
| ogg_page_checksum_set(&log); |
| |
| /* Compare */ |
| if(memcmp(chksum,page+22,4)){ |
| /* D'oh. Mismatch! Corrupt page (or miscapture and not a page |
| at all) */ |
| /* replace the computed checksum with the one actually read in */ |
| memcpy(page+22,chksum,4); |
| |
| #ifndef DISABLE_CRC |
| /* Bad checksum. Lose sync */ |
| goto sync_fail; |
| #endif |
| } |
| } |
| |
| /* yes, have a whole page all ready to go */ |
| { |
| if(og){ |
| og->header=page; |
| og->header_len=oy->headerbytes; |
| og->body=page+oy->headerbytes; |
| og->body_len=oy->bodybytes; |
| } |
| |
| oy->unsynced=0; |
| oy->returned+=(bytes=oy->headerbytes+oy->bodybytes); |
| oy->headerbytes=0; |
| oy->bodybytes=0; |
| return(bytes); |
| } |
| |
| sync_fail: |
| |
| oy->headerbytes=0; |
| oy->bodybytes=0; |
| |
| /* search for possible capture */ |
| next=memchr(page+1,'O',bytes-1); |
| if(!next) |
| next=oy->data+oy->fill; |
| |
| oy->returned=(int)(next-oy->data); |
| return((long)-(next-page)); |
| } |
| |
| /* sync the stream and get a page. Keep trying until we find a page. |
| Suppress 'sync errors' after reporting the first. |
| |
| return values: |
| -1) recapture (hole in data) |
| 0) need more data |
| 1) page returned |
| |
| Returns pointers into buffered data; invalidated by next call to |
| _stream, _clear, _init, or _buffer */ |
| |
| int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){ |
| |
| if(ogg_sync_check(oy))return 0; |
| |
| /* all we need to do is verify a page at the head of the stream |
| buffer. If it doesn't verify, we look for the next potential |
| frame */ |
| |
| for(;;){ |
| long ret=ogg_sync_pageseek(oy,og); |
| if(ret>0){ |
| /* have a page */ |
| return(1); |
| } |
| if(ret==0){ |
| /* need more data */ |
| return(0); |
| } |
| |
| /* head did not start a synced page... skipped some bytes */ |
| if(!oy->unsynced){ |
| oy->unsynced=1; |
| return(-1); |
| } |
| |
| /* loop. keep looking */ |
| |
| } |
| } |
| |
| /* add the incoming page to the stream state; we decompose the page |
| into packet segments here as well. */ |
| |
| int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){ |
| unsigned char *header=og->header; |
| unsigned char *body=og->body; |
| long bodysize=og->body_len; |
| int segptr=0; |
| |
| int version=ogg_page_version(og); |
| int continued=ogg_page_continued(og); |
| int bos=ogg_page_bos(og); |
| int eos=ogg_page_eos(og); |
| ogg_int64_t granulepos=ogg_page_granulepos(og); |
| int serialno=ogg_page_serialno(og); |
| long pageno=ogg_page_pageno(og); |
| int segments=header[26]; |
| |
| if(ogg_stream_check(os)) return -1; |
| |
| /* clean up 'returned data' */ |
| { |
| long lr=os->lacing_returned; |
| long br=os->body_returned; |
| |
| /* body data */ |
| if(br){ |
| os->body_fill-=br; |
| if(os->body_fill) |
| memmove(os->body_data,os->body_data+br,os->body_fill); |
| os->body_returned=0; |
| } |
| |
| if(lr){ |
| /* segment table */ |
| if(os->lacing_fill-lr){ |
| memmove(os->lacing_vals,os->lacing_vals+lr, |
| (os->lacing_fill-lr)*sizeof(*os->lacing_vals)); |
| memmove(os->granule_vals,os->granule_vals+lr, |
| (os->lacing_fill-lr)*sizeof(*os->granule_vals)); |
| } |
| os->lacing_fill-=lr; |
| os->lacing_packet-=lr; |
| os->lacing_returned=0; |
| } |
| } |
| |
| /* check the serial number */ |
| if(serialno!=os->serialno)return(-1); |
| if(version>0)return(-1); |
| |
| if(_os_lacing_expand(os,segments+1)) return -1; |
| |
| /* are we in sequence? */ |
| if(pageno!=os->pageno){ |
| int i; |
| |
| /* unroll previous partial packet (if any) */ |
| for(i=os->lacing_packet;i<os->lacing_fill;i++) |
| os->body_fill-=os->lacing_vals[i]&0xff; |
| os->lacing_fill=os->lacing_packet; |
| |
| /* make a note of dropped data in segment table */ |
| if(os->pageno!=-1){ |
| os->lacing_vals[os->lacing_fill++]=0x400; |
| os->lacing_packet++; |
| } |
| } |
| |
| /* are we a 'continued packet' page? If so, we may need to skip |
| some segments */ |
| if(continued){ |
| if(os->lacing_fill<1 || |
| (os->lacing_vals[os->lacing_fill-1]&0xff)<255 || |
| os->lacing_vals[os->lacing_fill-1]==0x400){ |
| bos=0; |
| for(;segptr<segments;segptr++){ |
| int val=header[27+segptr]; |
| body+=val; |
| bodysize-=val; |
| if(val<255){ |
| segptr++; |
| break; |
| } |
| } |
| } |
| } |
| |
| if(bodysize){ |
| if(_os_body_expand(os,bodysize)) return -1; |
| memcpy(os->body_data+os->body_fill,body,bodysize); |
| os->body_fill+=bodysize; |
| } |
| |
| { |
| int saved=-1; |
| while(segptr<segments){ |
| int val=header[27+segptr]; |
| os->lacing_vals[os->lacing_fill]=val; |
| os->granule_vals[os->lacing_fill]=-1; |
| |
| if(bos){ |
| os->lacing_vals[os->lacing_fill]|=0x100; |
| bos=0; |
| } |
| |
| if(val<255)saved=os->lacing_fill; |
| |
| os->lacing_fill++; |
| segptr++; |
| |
| if(val<255)os->lacing_packet=os->lacing_fill; |
| } |
| |
| /* set the granulepos on the last granuleval of the last full packet */ |
| if(saved!=-1){ |
| os->granule_vals[saved]=granulepos; |
| } |
| |
| } |
| |
| if(eos){ |
| os->e_o_s=1; |
| if(os->lacing_fill>0) |
| os->lacing_vals[os->lacing_fill-1]|=0x200; |
| } |
| |
| os->pageno=pageno+1; |
| |
| return(0); |
| } |
| |
| /* clear things to an initial state. Good to call, eg, before seeking */ |
| int ogg_sync_reset(ogg_sync_state *oy){ |
| if(ogg_sync_check(oy))return -1; |
| |
| oy->fill=0; |
| oy->returned=0; |
| oy->unsynced=0; |
| oy->headerbytes=0; |
| oy->bodybytes=0; |
| return(0); |
| } |
| |
| int ogg_stream_reset(ogg_stream_state *os){ |
| if(ogg_stream_check(os)) return -1; |
| |
| os->body_fill=0; |
| os->body_returned=0; |
| |
| os->lacing_fill=0; |
| os->lacing_packet=0; |
| os->lacing_returned=0; |
| |
| os->header_fill=0; |
| |
| os->e_o_s=0; |
| os->b_o_s=0; |
| os->pageno=-1; |
| os->packetno=0; |
| os->granulepos=0; |
| |
| return(0); |
| } |
| |
| int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno){ |
| if(ogg_stream_check(os)) return -1; |
| ogg_stream_reset(os); |
| os->serialno=serialno; |
| return(0); |
| } |
| |
| static int _packetout(ogg_stream_state *os,ogg_packet *op,int adv){ |
| |
| /* The last part of decode. We have the stream broken into packet |
| segments. Now we need to group them into packets (or return the |
| out of sync markers) */ |
| |
| int ptr=os->lacing_returned; |
| |
| if(os->lacing_packet<=ptr)return(0); |
| |
| if(os->lacing_vals[ptr]&0x400){ |
| /* we need to tell the codec there's a gap; it might need to |
| handle previous packet dependencies. */ |
| os->lacing_returned++; |
| os->packetno++; |
| return(-1); |
| } |
| |
| if(!op && !adv)return(1); /* just using peek as an inexpensive way |
| to ask if there's a whole packet |
| waiting */ |
| |
| /* Gather the whole packet. We'll have no holes or a partial packet */ |
| { |
| int size=os->lacing_vals[ptr]&0xff; |
| long bytes=size; |
| int eos=os->lacing_vals[ptr]&0x200; /* last packet of the stream? */ |
| int bos=os->lacing_vals[ptr]&0x100; /* first packet of the stream? */ |
| |
| while(size==255){ |
| int val=os->lacing_vals[++ptr]; |
| size=val&0xff; |
| if(val&0x200)eos=0x200; |
| bytes+=size; |
| } |
| |
| if(op){ |
| op->e_o_s=eos; |
| op->b_o_s=bos; |
| op->packet=os->body_data+os->body_returned; |
| op->packetno=os->packetno; |
| op->granulepos=os->granule_vals[ptr]; |
| op->bytes=bytes; |
| } |
| |
| if(adv){ |
| os->body_returned+=bytes; |
| os->lacing_returned=ptr+1; |
| os->packetno++; |
| } |
| } |
| return(1); |
| } |
| |
| int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op){ |
| if(ogg_stream_check(os)) return 0; |
| return _packetout(os,op,1); |
| } |
| |
| int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op){ |
| if(ogg_stream_check(os)) return 0; |
| return _packetout(os,op,0); |
| } |
| |
| void ogg_packet_clear(ogg_packet *op) { |
| _ogg_free(op->packet); |
| memset(op, 0, sizeof(*op)); |
| } |
| |
| #ifdef _V_SELFTEST |
| #include <stdio.h> |
| |
| ogg_stream_state os_en, os_de; |
| ogg_sync_state oy; |
| |
| void checkpacket(ogg_packet *op,long len, int no, long pos){ |
| long j; |
| static int sequence=0; |
| static int lastno=0; |
| |
| if(op->bytes!=len){ |
| fprintf(stderr,"incorrect packet length (%ld != %ld)!\n",op->bytes,len); |
| exit(1); |
| } |
| if(op->granulepos!=pos){ |
| fprintf(stderr,"incorrect packet granpos (%ld != %ld)!\n",(long)op->granulepos,pos); |
| exit(1); |
| } |
| |
| /* packet number just follows sequence/gap; adjust the input number |
| for that */ |
| if(no==0){ |
| sequence=0; |
| }else{ |
| sequence++; |
| if(no>lastno+1) |
| sequence++; |
| } |
| lastno=no; |
| if(op->packetno!=sequence){ |
| fprintf(stderr,"incorrect packet sequence %ld != %d\n", |
| (long)(op->packetno),sequence); |
| exit(1); |
| } |
| |
| /* Test data */ |
| for(j=0;j<op->bytes;j++) |
| if(op->packet[j]!=((j+no)&0xff)){ |
| fprintf(stderr,"body data mismatch (1) at pos %ld: %x!=%lx!\n\n", |
| j,op->packet[j],(j+no)&0xff); |
| exit(1); |
| } |
| } |
| |
| void check_page(unsigned char *data,const int *header,ogg_page *og){ |
| long j; |
| /* Test data */ |
| for(j=0;j<og->body_len;j++) |
| if(og->body[j]!=data[j]){ |
| fprintf(stderr,"body data mismatch (2) at pos %ld: %x!=%x!\n\n", |
| j,data[j],og->body[j]); |
| exit(1); |
| } |
| |
| /* Test header */ |
| for(j=0;j<og->header_len;j++){ |
| if(og->header[j]!=header[j]){ |
| fprintf(stderr,"header content mismatch at pos %ld:\n",j); |
| for(j=0;j<header[26]+27;j++) |
| fprintf(stderr," (%ld)%02x:%02x",j,header[j],og->header[j]); |
| fprintf(stderr,"\n"); |
| exit(1); |
| } |
| } |
| if(og->header_len!=header[26]+27){ |
| fprintf(stderr,"header length incorrect! (%ld!=%d)\n", |
| og->header_len,header[26]+27); |
| exit(1); |
| } |
| } |
| |
| void print_header(ogg_page *og){ |
| int j; |
| fprintf(stderr,"\nHEADER:\n"); |
| fprintf(stderr," capture: %c %c %c %c version: %d flags: %x\n", |
| og->header[0],og->header[1],og->header[2],og->header[3], |
| (int)og->header[4],(int)og->header[5]); |
| |
| fprintf(stderr," granulepos: %d serialno: %d pageno: %ld\n", |
| (og->header[9]<<24)|(og->header[8]<<16)| |
| (og->header[7]<<8)|og->header[6], |
| (og->header[17]<<24)|(og->header[16]<<16)| |
| (og->header[15]<<8)|og->header[14], |
| ((long)(og->header[21])<<24)|(og->header[20]<<16)| |
| (og->header[19]<<8)|og->header[18]); |
| |
| fprintf(stderr," checksum: %02x:%02x:%02x:%02x\n segments: %d (", |
| (int)og->header[22],(int)og->header[23], |
| (int)og->header[24],(int)og->header[25], |
| (int)og->header[26]); |
| |
| for(j=27;j<og->header_len;j++) |
| fprintf(stderr,"%d ",(int)og->header[j]); |
| fprintf(stderr,")\n\n"); |
| } |
| |
| void copy_page(ogg_page *og){ |
| unsigned char *temp=_ogg_malloc(og->header_len); |
| memcpy(temp,og->header,og->header_len); |
| og->header=temp; |
| |
| temp=_ogg_malloc(og->body_len); |
| memcpy(temp,og->body,og->body_len); |
| og->body=temp; |
| } |
| |
| void free_page(ogg_page *og){ |
| _ogg_free (og->header); |
| _ogg_free (og->body); |
| } |
| |
| void error(void){ |
| fprintf(stderr,"error!\n"); |
| exit(1); |
| } |
| |
| /* 17 only */ |
| const int head1_0[] = {0x4f,0x67,0x67,0x53,0,0x06, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0x15,0xed,0xec,0x91, |
| 1, |
| 17}; |
| |
| /* 17, 254, 255, 256, 500, 510, 600 byte, pad */ |
| const int head1_1[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0x59,0x10,0x6c,0x2c, |
| 1, |
| 17}; |
| const int head2_1[] = {0x4f,0x67,0x67,0x53,0,0x04, |
| 0x07,0x18,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0x89,0x33,0x85,0xce, |
| 13, |
| 254,255,0,255,1,255,245,255,255,0, |
| 255,255,90}; |
| |
| /* nil packets; beginning,middle,end */ |
| const int head1_2[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0xff,0x7b,0x23,0x17, |
| 1, |
| 0}; |
| const int head2_2[] = {0x4f,0x67,0x67,0x53,0,0x04, |
| 0x07,0x28,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0x5c,0x3f,0x66,0xcb, |
| 17, |
| 17,254,255,0,0,255,1,0,255,245,255,255,0, |
| 255,255,90,0}; |
| |
| /* large initial packet */ |
| const int head1_3[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0x01,0x27,0x31,0xaa, |
| 18, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255,255,10}; |
| |
| const int head2_3[] = {0x4f,0x67,0x67,0x53,0,0x04, |
| 0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0x7f,0x4e,0x8a,0xd2, |
| 4, |
| 255,4,255,0}; |
| |
| |
| /* continuing packet test */ |
| const int head1_4[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0xff,0x7b,0x23,0x17, |
| 1, |
| 0}; |
| |
| const int head2_4[] = {0x4f,0x67,0x67,0x53,0,0x00, |
| 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0xf8,0x3c,0x19,0x79, |
| 255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255}; |
| |
| const int head3_4[] = {0x4f,0x67,0x67,0x53,0,0x05, |
| 0x07,0x0c,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,2,0,0,0, |
| 0x38,0xe6,0xb6,0x28, |
| 6, |
| 255,220,255,4,255,0}; |
| |
| |
| /* spill expansion test */ |
| const int head1_4b[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0xff,0x7b,0x23,0x17, |
| 1, |
| 0}; |
| |
| const int head2_4b[] = {0x4f,0x67,0x67,0x53,0,0x00, |
| 0x07,0x10,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0xce,0x8f,0x17,0x1a, |
| 23, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255,255,10,255,4,255,0,0}; |
| |
| |
| const int head3_4b[] = {0x4f,0x67,0x67,0x53,0,0x04, |
| 0x07,0x14,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,2,0,0,0, |
| 0x9b,0xb2,0x50,0xa1, |
| 1, |
| 0}; |
| |
| /* page with the 255 segment limit */ |
| const int head1_5[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0xff,0x7b,0x23,0x17, |
| 1, |
| 0}; |
| |
| const int head2_5[] = {0x4f,0x67,0x67,0x53,0,0x00, |
| 0x07,0xfc,0x03,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0xed,0x2a,0x2e,0xa7, |
| 255, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10}; |
| |
| const int head3_5[] = {0x4f,0x67,0x67,0x53,0,0x04, |
| 0x07,0x00,0x04,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,2,0,0,0, |
| 0x6c,0x3b,0x82,0x3d, |
| 1, |
| 50}; |
| |
| |
| /* packet that overspans over an entire page */ |
| const int head1_6[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0xff,0x7b,0x23,0x17, |
| 1, |
| 0}; |
| |
| const int head2_6[] = {0x4f,0x67,0x67,0x53,0,0x00, |
| 0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0x68,0x22,0x7c,0x3d, |
| 255, |
| 100, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255}; |
| |
| const int head3_6[] = {0x4f,0x67,0x67,0x53,0,0x01, |
| 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, |
| 0x01,0x02,0x03,0x04,2,0,0,0, |
| 0xf4,0x87,0xba,0xf3, |
| 255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255}; |
| |
| const int head4_6[] = {0x4f,0x67,0x67,0x53,0,0x05, |
| 0x07,0x10,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,3,0,0,0, |
| 0xf7,0x2f,0x6c,0x60, |
| 5, |
| 254,255,4,255,0}; |
| |
| /* packet that overspans over an entire page */ |
| const int head1_7[] = {0x4f,0x67,0x67,0x53,0,0x02, |
| 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,0,0,0,0, |
| 0xff,0x7b,0x23,0x17, |
| 1, |
| 0}; |
| |
| const int head2_7[] = {0x4f,0x67,0x67,0x53,0,0x00, |
| 0x07,0x04,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,1,0,0,0, |
| 0x68,0x22,0x7c,0x3d, |
| 255, |
| 100, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255,255,255, |
| 255,255,255,255,255,255}; |
| |
| const int head3_7[] = {0x4f,0x67,0x67,0x53,0,0x05, |
| 0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00, |
| 0x01,0x02,0x03,0x04,2,0,0,0, |
| 0xd4,0xe0,0x60,0xe5, |
| 1, |
| 0}; |
| |
| int compare_packet(const ogg_packet *op1, const ogg_packet *op2){ |
| if(op1->packet!=op2->packet){ |
| fprintf(stderr,"op1->packet != op2->packet\n"); |
| return(1); |
| } |
| if(op1->bytes!=op2->bytes){ |
| fprintf(stderr,"op1->bytes != op2->bytes\n"); |
| return(1); |
| } |
| if(op1->b_o_s!=op2->b_o_s){ |
| fprintf(stderr,"op1->b_o_s != op2->b_o_s\n"); |
| return(1); |
| } |
| if(op1->e_o_s!=op2->e_o_s){ |
| fprintf(stderr,"op1->e_o_s != op2->e_o_s\n"); |
| return(1); |
| } |
| if(op1->granulepos!=op2->granulepos){ |
| fprintf(stderr,"op1->granulepos != op2->granulepos\n"); |
| return(1); |
| } |
| if(op1->packetno!=op2->packetno){ |
| fprintf(stderr,"op1->packetno != op2->packetno\n"); |
| return(1); |
| } |
| return(0); |
| } |
| |
| void test_pack(const int *pl, const int **headers, int byteskip, |
| int pageskip, int packetskip){ |
| unsigned char *data=_ogg_malloc(1024*1024); /* for scripted test cases only */ |
| long inptr=0; |
| long outptr=0; |
| long deptr=0; |
| long depacket=0; |
| long granule_pos=7,pageno=0; |
| int i,j,packets,pageout=pageskip; |
| int eosflag=0; |
| int bosflag=0; |
| |
| int byteskipcount=0; |
| |
| ogg_stream_reset(&os_en); |
| ogg_stream_reset(&os_de); |
| ogg_sync_reset(&oy); |
| |
| for(packets=0;packets<packetskip;packets++) |
| depacket+=pl[packets]; |
| |
| for(packets=0;;packets++)if(pl[packets]==-1)break; |
| |
| for(i=0;i<packets;i++){ |
| /* construct a test packet */ |
| ogg_packet op; |
| int len=pl[i]; |
| |
| op.packet=data+inptr; |
| op.bytes=len; |
| op.e_o_s=(pl[i+1]<0?1:0); |
| op.granulepos=granule_pos; |
| |
| granule_pos+=1024; |
| |
| for(j=0;j<len;j++)data[inptr++]=i+j; |
| |
| /* submit the test packet */ |
| ogg_stream_packetin(&os_en,&op); |
| |
| /* retrieve any finished pages */ |
| { |
| ogg_page og; |
| |
| while(ogg_stream_pageout(&os_en,&og)){ |
| /* We have a page. Check it carefully */ |
| |
| fprintf(stderr,"%ld, ",pageno); |
| |
| if(headers[pageno]==NULL){ |
| fprintf(stderr,"coded too many pages!\n"); |
| exit(1); |
| } |
| |
| check_page(data+outptr,headers[pageno],&og); |
| |
| outptr+=og.body_len; |
| pageno++; |
| if(pageskip){ |
| bosflag=1; |
| pageskip--; |
| deptr+=og.body_len; |
| } |
| |
| /* have a complete page; submit it to sync/decode */ |
| |
| { |
| ogg_page og_de; |
| ogg_packet op_de,op_de2; |
| char *buf=ogg_sync_buffer(&oy,og.header_len+og.body_len); |
| char *next=buf; |
| byteskipcount+=og.header_len; |
| if(byteskipcount>byteskip){ |
| memcpy(next,og.header,byteskipcount-byteskip); |
| next+=byteskipcount-byteskip; |
| byteskipcount=byteskip; |
| } |
| |
| byteskipcount+=og.body_len; |
| if(byteskipcount>byteskip){ |
| memcpy(next,og.body,byteskipcount-byteskip); |
| next+=byteskipcount-byteskip; |
| byteskipcount=byteskip; |
| } |
| |
| ogg_sync_wrote(&oy,next-buf); |
| |
| while(1){ |
| int ret=ogg_sync_pageout(&oy,&og_de); |
| if(ret==0)break; |
| if(ret<0)continue; |
| /* got a page. Happy happy. Verify that it's good. */ |
| |
| fprintf(stderr,"(%d), ",pageout); |
| |
| check_page(data+deptr,headers[pageout],&og_de); |
| deptr+=og_de.body_len; |
| pageout++; |
| |
| /* submit it to deconstitution */ |
| ogg_stream_pagein(&os_de,&og_de); |
| |
| /* packets out? */ |
| while(ogg_stream_packetpeek(&os_de,&op_de2)>0){ |
| ogg_stream_packetpeek(&os_de,NULL); |
| ogg_stream_packetout(&os_de,&op_de); /* just catching them all */ |
| |
| /* verify peek and out match */ |
| if(compare_packet(&op_de,&op_de2)){ |
| fprintf(stderr,"packetout != packetpeek! pos=%ld\n", |
| depacket); |
| exit(1); |
| } |
| |
| /* verify the packet! */ |
| /* check data */ |
| if(memcmp(data+depacket,op_de.packet,op_de.bytes)){ |
| fprintf(stderr,"packet data mismatch in decode! pos=%ld\n", |
| depacket); |
| exit(1); |
| } |
| /* check bos flag */ |
| if(bosflag==0 && op_de.b_o_s==0){ |
| fprintf(stderr,"b_o_s flag not set on packet!\n"); |
| exit(1); |
| } |
| if(bosflag && op_de.b_o_s){ |
| fprintf(stderr,"b_o_s flag incorrectly set on packet!\n"); |
| exit(1); |
| } |
| bosflag=1; |
| depacket+=op_de.bytes; |
| |
| /* check eos flag */ |
| if(eosflag){ |
| fprintf(stderr,"Multiple decoded packets with eos flag!\n"); |
| exit(1); |
| } |
| |
| if(op_de.e_o_s)eosflag=1; |
| |
| /* check granulepos flag */ |
| if(op_de.granulepos!=-1){ |
| fprintf(stderr," granule:%ld ",(long)op_de.granulepos); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| _ogg_free(data); |
| if(headers[pageno]!=NULL){ |
| fprintf(stderr,"did not write last page!\n"); |
| exit(1); |
| } |
| if(headers[pageout]!=NULL){ |
| fprintf(stderr,"did not decode last page!\n"); |
| exit(1); |
| } |
| if(inptr!=outptr){ |
| fprintf(stderr,"encoded page data incomplete!\n"); |
| exit(1); |
| } |
| if(inptr!=deptr){ |
| fprintf(stderr,"decoded page data incomplete!\n"); |
| exit(1); |
| } |
| if(inptr!=depacket){ |
| fprintf(stderr,"decoded packet data incomplete!\n"); |
| exit(1); |
| } |
| if(!eosflag){ |
| fprintf(stderr,"Never got a packet with EOS set!\n"); |
| exit(1); |
| } |
| fprintf(stderr,"ok.\n"); |
| } |
| |
| int main(void){ |
| |
| ogg_stream_init(&os_en,0x04030201); |
| ogg_stream_init(&os_de,0x04030201); |
| ogg_sync_init(&oy); |
| |
| /* Exercise each code path in the framing code. Also verify that |
| the checksums are working. */ |
| |
| { |
| /* 17 only */ |
| const int packets[]={17, -1}; |
| const int *headret[]={head1_0,NULL}; |
| |
| fprintf(stderr,"testing single page encoding... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| { |
| /* 17, 254, 255, 256, 500, 510, 600 byte, pad */ |
| const int packets[]={17, 254, 255, 256, 500, 510, 600, -1}; |
| const int *headret[]={head1_1,head2_1,NULL}; |
| |
| fprintf(stderr,"testing basic page encoding... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| { |
| /* nil packets; beginning,middle,end */ |
| const int packets[]={0,17, 254, 255, 0, 256, 0, 500, 510, 600, 0, -1}; |
| const int *headret[]={head1_2,head2_2,NULL}; |
| |
| fprintf(stderr,"testing basic nil packets... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| { |
| /* large initial packet */ |
| const int packets[]={4345,259,255,-1}; |
| const int *headret[]={head1_3,head2_3,NULL}; |
| |
| fprintf(stderr,"testing initial-packet lacing > 4k... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| { |
| /* continuing packet test; with page spill expansion, we have to |
| overflow the lacing table. */ |
| const int packets[]={0,65500,259,255,-1}; |
| const int *headret[]={head1_4,head2_4,head3_4,NULL}; |
| |
| fprintf(stderr,"testing single packet page span... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| { |
| /* spill expand packet test */ |
| const int packets[]={0,4345,259,255,0,0,-1}; |
| const int *headret[]={head1_4b,head2_4b,head3_4b,NULL}; |
| |
| fprintf(stderr,"testing page spill expansion... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| /* page with the 255 segment limit */ |
| { |
| |
| const int packets[]={0,10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,10, |
| 10,10,10,10,10,10,10,50,-1}; |
| const int *headret[]={head1_5,head2_5,head3_5,NULL}; |
| |
| fprintf(stderr,"testing max packet segments... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| { |
| /* packet that overspans over an entire page */ |
| const int packets[]={0,100,130049,259,255,-1}; |
| const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL}; |
| |
| fprintf(stderr,"testing very large packets... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| #ifndef DISABLE_CRC |
| { |
| /* test for the libogg 1.1.1 resync in large continuation bug |
| found by Josh Coalson) */ |
| const int packets[]={0,100,130049,259,255,-1}; |
| const int *headret[]={head1_6,head2_6,head3_6,head4_6,NULL}; |
| |
| fprintf(stderr,"testing continuation resync in very large packets... "); |
| test_pack(packets,headret,100,2,3); |
| } |
| #else |
| fprintf(stderr,"Skipping continuation resync test due to --disable-crc\n"); |
| #endif |
| |
| { |
| /* term only page. why not? */ |
| const int packets[]={0,100,64770,-1}; |
| const int *headret[]={head1_7,head2_7,head3_7,NULL}; |
| |
| fprintf(stderr,"testing zero data page (1 nil packet)... "); |
| test_pack(packets,headret,0,0,0); |
| } |
| |
| |
| |
| { |
| /* build a bunch of pages for testing */ |
| unsigned char *data=_ogg_malloc(1024*1024); |
| int pl[]={0, 1,1,98,4079, 1,1,2954,2057, 76,34,912,0,234,1000,1000, 1000,300,-1}; |
| int inptr=0,i,j; |
| ogg_page og[5]; |
| |
| ogg_stream_reset(&os_en); |
| |
| for(i=0;pl[i]!=-1;i++){ |
| ogg_packet op; |
| int len=pl[i]; |
| |
| op.packet=data+inptr; |
| op.bytes=len; |
| op.e_o_s=(pl[i+1]<0?1:0); |
| op.granulepos=(i+1)*1000; |
| |
| for(j=0;j<len;j++)data[inptr++]=i+j; |
| ogg_stream_packetin(&os_en,&op); |
| } |
| |
| _ogg_free(data); |
| |
| /* retrieve finished pages */ |
| for(i=0;i<5;i++){ |
| if(ogg_stream_pageout(&os_en,&og[i])==0){ |
| fprintf(stderr,"Too few pages output building sync tests!\n"); |
| exit(1); |
| } |
| copy_page(&og[i]); |
| } |
| |
| /* Test lost pages on pagein/packetout: no rollback */ |
| { |
| ogg_page temp; |
| ogg_packet test; |
| |
| fprintf(stderr,"Testing loss of pages... "); |
| |
| ogg_sync_reset(&oy); |
| ogg_stream_reset(&os_de); |
| for(i=0;i<5;i++){ |
| memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header, |
| og[i].header_len); |
| ogg_sync_wrote(&oy,og[i].header_len); |
| memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len); |
| ogg_sync_wrote(&oy,og[i].body_len); |
| } |
| |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| ogg_sync_pageout(&oy,&temp); |
| /* skip */ |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| |
| /* do we get the expected results/packets? */ |
| |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,0,0,0); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,1,1,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,1,2,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,98,3,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,4079,4,5000); |
| if(ogg_stream_packetout(&os_de,&test)!=-1){ |
| fprintf(stderr,"Error: loss of page did not return error\n"); |
| exit(1); |
| } |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,76,9,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,34,10,-1); |
| fprintf(stderr,"ok.\n"); |
| } |
| |
| /* Test lost pages on pagein/packetout: rollback with continuation */ |
| { |
| ogg_page temp; |
| ogg_packet test; |
| |
| fprintf(stderr,"Testing loss of pages (rollback required)... "); |
| |
| ogg_sync_reset(&oy); |
| ogg_stream_reset(&os_de); |
| for(i=0;i<5;i++){ |
| memcpy(ogg_sync_buffer(&oy,og[i].header_len),og[i].header, |
| og[i].header_len); |
| ogg_sync_wrote(&oy,og[i].header_len); |
| memcpy(ogg_sync_buffer(&oy,og[i].body_len),og[i].body,og[i].body_len); |
| ogg_sync_wrote(&oy,og[i].body_len); |
| } |
| |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| ogg_sync_pageout(&oy,&temp); |
| /* skip */ |
| ogg_sync_pageout(&oy,&temp); |
| ogg_stream_pagein(&os_de,&temp); |
| |
| /* do we get the expected results/packets? */ |
| |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,0,0,0); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,1,1,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,1,2,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,98,3,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,4079,4,5000); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,1,5,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,1,6,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,2954,7,-1); |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,2057,8,9000); |
| if(ogg_stream_packetout(&os_de,&test)!=-1){ |
| fprintf(stderr,"Error: loss of page did not return error\n"); |
| exit(1); |
| } |
| if(ogg_stream_packetout(&os_de,&test)!=1)error(); |
| checkpacket(&test,300,17,18000); |
| fprintf(stderr,"ok.\n"); |
| } |
| |
| /* the rest only test sync */ |
| { |
| ogg_page og_de; |
| /* Test fractional page inputs: incomplete capture */ |
| fprintf(stderr,"Testing sync on partial inputs... "); |
| ogg_sync_reset(&oy); |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header, |
| 3); |
| ogg_sync_wrote(&oy,3); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| /* Test fractional page inputs: incomplete fixed header */ |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+3, |
| 20); |
| ogg_sync_wrote(&oy,20); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| /* Test fractional page inputs: incomplete header */ |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+23, |
| 5); |
| ogg_sync_wrote(&oy,5); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| /* Test fractional page inputs: incomplete body */ |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+28, |
| og[1].header_len-28); |
| ogg_sync_wrote(&oy,og[1].header_len-28); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,1000); |
| ogg_sync_wrote(&oy,1000); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body+1000, |
| og[1].body_len-1000); |
| ogg_sync_wrote(&oy,og[1].body_len-1000); |
| if(ogg_sync_pageout(&oy,&og_de)<=0)error(); |
| |
| fprintf(stderr,"ok.\n"); |
| } |
| |
| /* Test fractional page inputs: page + incomplete capture */ |
| { |
| ogg_page og_de; |
| fprintf(stderr,"Testing sync on 1+partial inputs... "); |
| ogg_sync_reset(&oy); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header, |
| og[1].header_len); |
| ogg_sync_wrote(&oy,og[1].header_len); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body, |
| og[1].body_len); |
| ogg_sync_wrote(&oy,og[1].body_len); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header, |
| 20); |
| ogg_sync_wrote(&oy,20); |
| if(ogg_sync_pageout(&oy,&og_de)<=0)error(); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header+20, |
| og[1].header_len-20); |
| ogg_sync_wrote(&oy,og[1].header_len-20); |
| memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body, |
| og[1].body_len); |
| ogg_sync_wrote(&oy,og[1].body_len); |
| if(ogg_sync_pageout(&oy,&og_de)<=0)error(); |
| |
| fprintf(stderr,"ok.\n"); |
| } |
| |
| /* Test recapture: garbage + page */ |
| { |
| ogg_page og_de; |
| fprintf(stderr,"Testing search for capture... "); |
| ogg_sync_reset(&oy); |
| |
| /* 'garbage' */ |
| memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body, |
| og[1].body_len); |
| ogg_sync_wrote(&oy,og[1].body_len); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header, |
| og[1].header_len); |
| ogg_sync_wrote(&oy,og[1].header_len); |
| |
| memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body, |
| og[1].body_len); |
| ogg_sync_wrote(&oy,og[1].body_len); |
| |
| memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header, |
| 20); |
| ogg_sync_wrote(&oy,20); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| if(ogg_sync_pageout(&oy,&og_de)<=0)error(); |
| if(ogg_sync_pageout(&oy,&og_de)>0)error(); |
| |
| memcpy(ogg_sync_buffer(&oy,og[2].header_len),og[2].header+20, |
| og[2].header_len-20); |
| ogg_sync_wrote(&oy,og[2].header_len-20); |
| memcpy(ogg_sync_buffer(&oy,og[2].body_len),og[2].body, |
| og[2].body_len); |
| ogg_sync_wrote(&oy,og[2].body_len); |
| if(ogg_sync_pageout(&oy,&og_de)<=0)error(); |
| |
| fprintf(stderr,"ok.\n"); |
| } |
| |
| #ifndef DISABLE_CRC |
| /* 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"); |
| } |
| #else |
| fprintf(stderr,"Skipping recapture test due to --disable-crc\n"); |
| #endif |
| |
| /* Free page data that was previously copied */ |
| { |
| for(i=0;i<5;i++){ |
| free_page(&og[i]); |
| } |
| } |
| } |
| ogg_sync_clear(&oy); |
| ogg_stream_clear(&os_en); |
| ogg_stream_clear(&os_de); |
| |
| return(0); |
| } |
| |
| #endif |