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godot/thirdparty/libogg/framing.c

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/********************************************************************
* *
* 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. *
* *
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* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2018 *
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* 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.
********************************************************************/
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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
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#include <stdlib.h>
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#include <limits.h>
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#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;
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ogg_uint64_t granulepos=page[13]&(0xff);
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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);
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return((ogg_int64_t)granulepos);
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}
int ogg_page_serialno(const ogg_page *og){
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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));
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}
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long ogg_page_pageno(const ogg_page *og){
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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));
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}
/* 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:
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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
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*/
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
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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);
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}
#endif
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#include "crctable.h"
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/* 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);
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}
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/* 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);
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memset(os,0,sizeof(*os));
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}
return(0);
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}
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int ogg_stream_destroy(ogg_stream_state *os){
if(os){
ogg_stream_clear(os);
_ogg_free(os);
}
return(0);
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}
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/* Helpers for ogg_stream_encode; this keeps the structure and
what's happening fairly clear */
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static int _os_body_expand(ogg_stream_state *os,long needed){
if(os->body_storage-needed<=os->body_fill){
long body_storage;
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void *ret;
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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));
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if(!ret){
ogg_stream_clear(os);
return -1;
}
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os->body_storage=body_storage;
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os->body_data=ret;
}
return 0;
}
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static int _os_lacing_expand(ogg_stream_state *os,long needed){
if(os->lacing_storage-needed<=os->lacing_fill){
long lacing_storage;
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void *ret;
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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));
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if(!ret){
ogg_stream_clear(os);
return -1;
}
os->lacing_vals=ret;
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ret=_ogg_realloc(os->granule_vals,lacing_storage*
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sizeof(*os->granule_vals));
if(!ret){
ogg_stream_clear(os);
return -1;
}
os->granule_vals=ret;
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os->lacing_storage=lacing_storage;
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}
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 */
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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;
}
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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;
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crc_reg=_os_update_crc(crc_reg,og->header,og->header_len);
crc_reg=_os_update_crc(crc_reg,og->body,og->body_len);
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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){
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long bytes = 0, lacing_vals;
int i;
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if(ogg_stream_check(os)) return -1;
if(!iov) return 0;
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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;
}
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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 */
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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;
}
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/* 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:
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1) Don't unnecessarily span pages.
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2) Unless necessary, don't flush pages if there are less than four packets on
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them; this expands page size to reduce unnecessary overhead if incoming packets
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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;
}
}
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/* zero for computation; filled in later */
os->header[22]=0;
os->header[23]=0;
os->header[24]=0;
os->header[25]=0;
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/* 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);
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/* 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;
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/* advance the lacing data and set the body_returned pointer */
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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;
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/* calculate the checksum */
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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
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a page regardless of size in the middle of a stream. */
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int ogg_stream_flush(ogg_stream_state *os,ogg_page *og){
return ogg_stream_flush_i(os,og,1,4096);
}
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/* 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);
}
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/* 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));
}
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/* Like the above, but an argument is provided to adjust the nominal
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page size for applications which are smart enough to provide their
own delay based flushing */
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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
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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*/
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;
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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if(oy->headerbytes==0){
int headerbytes,i;
if(bytes<27)return(0); /* not enough for a header */
libogg: New version 1.3.2
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/* verify capture pattern */
if(memcmp(page,"OggS",4))goto sync_fail;
libogg: New version 1.3.2
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headerbytes=page[26]+27;
if(bytes<headerbytes)return(0); /* not enough for header + seg table */
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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/* count up body length in the segment table */
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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for(i=0;i<page[26];i++)
oy->bodybytes+=page[27+i];
oy->headerbytes=headerbytes;
}
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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if(oy->bodybytes+oy->headerbytes>bytes)return(0);
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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/* 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;
libogg: New version 1.3.2
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memcpy(chksum,page+22,4);
memset(page+22,0,4);
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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/* 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);
libogg: New version 1.3.2
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/* 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);
libogg: New version 1.3.2
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Update libogg to upstream c8fca6b
2019-10-31 06:40:59 +08:00
#ifndef DISABLE_CRC
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/* Bad checksum. Lose sync */
goto sync_fail;
Update libogg to upstream c8fca6b
2019-10-31 06:40:59 +08:00
#endif
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}
}
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/* 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);
}
libogg: New version 1.3.2
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sync_fail:
libogg: New version 1.3.2
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oy->headerbytes=0;
oy->bodybytes=0;
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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/* 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);
}
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/* 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];
libogg: New version 1.3.2
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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){
libogg: New version 1.3.2
2016-06-19 20:39:38 +08:00
if(os->lacing_fill<1 ||
libogg: Update to pristine version 1.3.3
2018-01-13 19:59:25 +08:00
(os->lacing_vals[os->lacing_fill-1]&0xff)<255 ||
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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;
}
}
}
}
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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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;
libogg: New version 1.3.2
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if(bos){
os->lacing_vals[os->lacing_fill]|=0x100;
bos=0;
}
libogg: New version 1.3.2
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GODOT IS OPEN SOURCE
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if(val<255)saved=os->lacing_fill;
libogg: New version 1.3.2
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os->lacing_fill++;
segptr++;
libogg: New version 1.3.2
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if(val<255)os->lacing_packet=os->lacing_fill;
}
libogg: New version 1.3.2
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/* 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};
libogg: Update to pristine version 1.3.3
2018-01-13 19:59:25 +08:00
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);
}
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
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];
libogg: New version 1.3.2
2016-06-19 20:39:38 +08:00
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
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;
libogg: New version 1.3.2
2016-06-19 20:39:38 +08:00
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
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. */
libogg: New version 1.3.2
2016-06-19 20:39:38 +08:00
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
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 */
libogg: New version 1.3.2
2016-06-19 20:39:38 +08:00
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
/* verify peek and out match */
libogg: Update to pristine version 1.3.3
2018-01-13 19:59:25 +08:00
if(compare_packet(&op_de,&op_de2)){
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
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;
libogg: New version 1.3.2
2016-06-19 20:39:38 +08:00
GODOT IS OPEN SOURCE
2014-02-10 09:10:30 +08:00
/* 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};
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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};
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fprintf(stderr,"testing very large packets... ");
test_pack(packets,headret,0,0,0);
}
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#ifndef DISABLE_CRC
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{
/* 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};
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fprintf(stderr,"testing continuation resync in very large packets... ");
test_pack(packets,headret,100,2,3);
}
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#else
fprintf(stderr,"Skipping continuation resync test due to --disable-crc\n");
#endif
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{
/* term only page. why not? */
const int packets[]={0,100,64770,-1};
const int *headret[]={head1_7,head2_7,head3_7,NULL};
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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];
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ogg_stream_reset(&os_en);
for(i=0;pl[i]!=-1;i++){
ogg_packet op;
int len=pl[i];
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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? */
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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");
}
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/* Test recapture: garbage + page */
{
ogg_page og_de;
fprintf(stderr,"Testing search for capture... ");
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ogg_sync_reset(&oy);
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/* '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");
}
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#ifndef DISABLE_CRC
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/* Test recapture: page + garbage + page */
{
ogg_page og_de;
fprintf(stderr,"Testing recapture... ");
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ogg_sync_reset(&oy);
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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");
}
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#else
fprintf(stderr,"Skipping recapture test due to --disable-crc\n");
#endif
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/* Free page data that was previously copied */
{
for(i=0;i<5;i++){
free_page(&og[i]);
}
}
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}
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ogg_sync_clear(&oy);
ogg_stream_clear(&os_en);
ogg_stream_clear(&os_de);
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return(0);
}
#endif
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