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libogg: New version 1.3.2

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J08nY 2016-06-19 14:39:38 +02:00
parent 37d1bf4d53
commit 98f23d27a4
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4 changed files with 388 additions and 134 deletions
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315
drivers/ogg/bitwise.c
View File

@ -5,13 +5,13 @@
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2010 *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2014 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: packing variable sized words into an octet stream
last mod: $Id: bitwise.c 17287 2010-06-10 13:42:06Z tterribe $
last mod: $Id: bitwise.c 19149 2014-05-27 16:26:23Z giles $
********************************************************************/
@ -93,11 +93,11 @@ void oggpack_write(oggpack_buffer *b,unsigned long value,int bits){
b->ptr=b->buffer+b->endbyte;
}
value&=mask[bits];
value&=mask[bits];
bits+=b->endbit;
b->ptr[0]|=value<<b->endbit;
b->ptr[0]|=value<<b->endbit;
if(bits>=8){
b->ptr[1]=(unsigned char)(value>>(8-b->endbit));
if(bits>=16){
@ -136,11 +136,11 @@ void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits){
b->ptr=b->buffer+b->endbyte;
}
value=(value&mask[bits])<<(32-bits);
value=(value&mask[bits])<<(32-bits);
bits+=b->endbit;
b->ptr[0]|=value>>(24+b->endbit);
b->ptr[0]|=value>>(24+b->endbit);
if(bits>=8){
b->ptr[1]=(unsigned char)(value>>(16+b->endbit));
if(bits>=16){
@ -187,37 +187,41 @@ static void oggpack_writecopy_helper(oggpack_buffer *b,
unsigned char *ptr=(unsigned char *)source;
long bytes=bits/8;
long pbytes=(b->endbit+bits)/8;
bits-=bytes*8;
/* expand storage up-front */
if(b->endbyte+pbytes>=b->storage){
void *ret;
if(!b->ptr) goto err;
if(b->storage>b->endbyte+pbytes+BUFFER_INCREMENT) goto err;
b->storage=b->endbyte+pbytes+BUFFER_INCREMENT;
ret=_ogg_realloc(b->buffer,b->storage);
if(!ret) goto err;
b->buffer=ret;
b->ptr=b->buffer+b->endbyte;
}
/* copy whole octets */
if(b->endbit){
int i;
/* unaligned copy. Do it the hard way. */
for(i=0;i<bytes;i++)
w(b,(unsigned long)(ptr[i]),8);
w(b,(unsigned long)(ptr[i]),8);
}else{
/* aligned block copy */
if(b->endbyte+bytes+1>=b->storage){
void *ret;
if(!b->ptr) goto err;
if(b->endbyte+bytes+BUFFER_INCREMENT>b->storage) goto err;
b->storage=b->endbyte+bytes+BUFFER_INCREMENT;
ret=_ogg_realloc(b->buffer,b->storage);
if(!ret) goto err;
b->buffer=ret;
b->ptr=b->buffer+b->endbyte;
}
memmove(b->ptr,source,bytes);
b->ptr+=bytes;
b->endbyte+=bytes;
*b->ptr=0;
}
/* copy trailing bits */
if(bits){
if(msb)
w(b,(unsigned long)(ptr[bytes]>>(8-bits)),bits);
w(b,(unsigned long)(ptr[bytes]>>(8-bits)),bits);
else
w(b,(unsigned long)(ptr[bytes]),bits);
w(b,(unsigned long)(ptr[bytes]),bits);
}
return;
err:
@ -281,11 +285,11 @@ long oggpack_look(oggpack_buffer *b,int bits){
ret=b->ptr[0]>>b->endbit;
if(bits>8){
ret|=b->ptr[1]<<(8-b->endbit);
ret|=b->ptr[1]<<(8-b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(16-b->endbit);
ret|=b->ptr[2]<<(16-b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(24-b->endbit);
ret|=b->ptr[3]<<(24-b->endbit);
if(bits>32 && b->endbit)
ret|=b->ptr[4]<<(32-b->endbit);
}
@ -312,11 +316,11 @@ long oggpackB_look(oggpack_buffer *b,int bits){
ret=b->ptr[0]<<(24+b->endbit);
if(bits>8){
ret|=b->ptr[1]<<(16+b->endbit);
ret|=b->ptr[1]<<(16+b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(8+b->endbit);
ret|=b->ptr[2]<<(8+b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(b->endbit);
ret|=b->ptr[3]<<(b->endbit);
if(bits>32 && b->endbit)
ret|=b->ptr[4]>>(8-b->endbit);
}
@ -386,11 +390,11 @@ long oggpack_read(oggpack_buffer *b,int bits){
ret=b->ptr[0]>>b->endbit;
if(bits>8){
ret|=b->ptr[1]<<(8-b->endbit);
ret|=b->ptr[1]<<(8-b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(16-b->endbit);
ret|=b->ptr[2]<<(16-b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(24-b->endbit);
ret|=b->ptr[3]<<(24-b->endbit);
if(bits>32 && b->endbit){
ret|=b->ptr[4]<<(32-b->endbit);
}
@ -429,11 +433,11 @@ long oggpackB_read(oggpack_buffer *b,int bits){
ret=b->ptr[0]<<(24+b->endbit);
if(bits>8){
ret|=b->ptr[1]<<(16+b->endbit);
ret|=b->ptr[1]<<(16+b->endbit);
if(bits>16){
ret|=b->ptr[2]<<(8+b->endbit);
ret|=b->ptr[2]<<(8+b->endbit);
if(bits>24){
ret|=b->ptr[3]<<(b->endbit);
ret|=b->ptr[3]<<(b->endbit);
if(bits>32 && b->endbit)
ret|=b->ptr[4]>>(8-b->endbit);
}
@ -511,7 +515,7 @@ long oggpackB_bytes(oggpack_buffer *b){
long oggpackB_bits(oggpack_buffer *b){
return oggpack_bits(b);
}
unsigned char *oggpack_get_buffer(oggpack_buffer *b){
return(b->buffer);
}
@ -534,7 +538,7 @@ static int ilog(unsigned int v){
}
return(ret);
}
oggpack_buffer o;
oggpack_buffer r;
@ -581,7 +585,7 @@ void cliptest(unsigned long *b,int vals,int bits,int *comp,int compsize){
void cliptestB(unsigned long *b,int vals,int bits,int *comp,int compsize){
long bytes,i;
unsigned char *buffer;
oggpackB_reset(&o);
for(i=0;i<vals;i++)
oggpackB_write(&o,b[i],bits?bits:ilog(b[i]));
@ -613,9 +617,190 @@ void cliptestB(unsigned long *b,int vals,int bits,int *comp,int compsize){
if(oggpackB_bytes(&r)!=bytes)report("leftover bytes after read!\n");
}
void copytest(int prefill, int copy){
oggpack_buffer source_write;
oggpack_buffer dest_write;
oggpack_buffer source_read;
oggpack_buffer dest_read;
unsigned char *source;
unsigned char *dest;
long source_bytes,dest_bytes;
int i;
oggpack_writeinit(&source_write);
oggpack_writeinit(&dest_write);
for(i=0;i<(prefill+copy+7)/8;i++)
oggpack_write(&source_write,(i^0x5a)&0xff,8);
source=oggpack_get_buffer(&source_write);
source_bytes=oggpack_bytes(&source_write);
/* prefill */
oggpack_writecopy(&dest_write,source,prefill);
/* check buffers; verify end byte masking */
dest=oggpack_get_buffer(&dest_write);
dest_bytes=oggpack_bytes(&dest_write);
if(dest_bytes!=(prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill! %ld!=%d\n",dest_bytes,(prefill+7)/8);
exit(1);
}
oggpack_readinit(&source_read,source,source_bytes);
oggpack_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpack_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpack_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
if(prefill<dest_bytes){
if(oggpack_read(&dest_read,dest_bytes-prefill)!=0){
fprintf(stderr,"prefill=%d mismatch! trailing bits not zero\n",prefill);
exit(1);
}
}
/* second copy */
oggpack_writecopy(&dest_write,source,copy);
/* check buffers; verify end byte masking */
dest=oggpack_get_buffer(&dest_write);
dest_bytes=oggpack_bytes(&dest_write);
if(dest_bytes!=(copy+prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill+copy! %ld!=%d\n",dest_bytes,(copy+prefill+7)/8);
exit(1);
}
oggpack_readinit(&source_read,source,source_bytes);
oggpack_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpack_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpack_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
oggpack_readinit(&source_read,source,source_bytes);
for(i=0;i<copy;i+=8){
int s=oggpack_read(&source_read,copy-i<8?copy-i:8);
int d=oggpack_read(&dest_read,copy-i<8?copy-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d copy=%d mismatch! byte %d, %x!=%x\n",prefill,copy,i/8,s,d);
exit(1);
}
}
if(copy+prefill<dest_bytes){
if(oggpack_read(&dest_read,dest_bytes-copy-prefill)!=0){
fprintf(stderr,"prefill=%d copy=%d mismatch! trailing bits not zero\n",prefill,copy);
exit(1);
}
}
oggpack_writeclear(&source_write);
oggpack_writeclear(&dest_write);
}
void copytestB(int prefill, int copy){
oggpack_buffer source_write;
oggpack_buffer dest_write;
oggpack_buffer source_read;
oggpack_buffer dest_read;
unsigned char *source;
unsigned char *dest;
long source_bytes,dest_bytes;
int i;
oggpackB_writeinit(&source_write);
oggpackB_writeinit(&dest_write);
for(i=0;i<(prefill+copy+7)/8;i++)
oggpackB_write(&source_write,(i^0x5a)&0xff,8);
source=oggpackB_get_buffer(&source_write);
source_bytes=oggpackB_bytes(&source_write);
/* prefill */
oggpackB_writecopy(&dest_write,source,prefill);
/* check buffers; verify end byte masking */
dest=oggpackB_get_buffer(&dest_write);
dest_bytes=oggpackB_bytes(&dest_write);
if(dest_bytes!=(prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill! %ld!=%d\n",dest_bytes,(prefill+7)/8);
exit(1);
}
oggpackB_readinit(&source_read,source,source_bytes);
oggpackB_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpackB_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpackB_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
if(prefill<dest_bytes){
if(oggpackB_read(&dest_read,dest_bytes-prefill)!=0){
fprintf(stderr,"prefill=%d mismatch! trailing bits not zero\n",prefill);
exit(1);
}
}
/* second copy */
oggpackB_writecopy(&dest_write,source,copy);
/* check buffers; verify end byte masking */
dest=oggpackB_get_buffer(&dest_write);
dest_bytes=oggpackB_bytes(&dest_write);
if(dest_bytes!=(copy+prefill+7)/8){
fprintf(stderr,"wrong number of bytes after prefill+copy! %ld!=%d\n",dest_bytes,(copy+prefill+7)/8);
exit(1);
}
oggpackB_readinit(&source_read,source,source_bytes);
oggpackB_readinit(&dest_read,dest,dest_bytes);
for(i=0;i<prefill;i+=8){
int s=oggpackB_read(&source_read,prefill-i<8?prefill-i:8);
int d=oggpackB_read(&dest_read,prefill-i<8?prefill-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d mismatch! byte %d, %x!=%x\n",prefill,i/8,s,d);
exit(1);
}
}
oggpackB_readinit(&source_read,source,source_bytes);
for(i=0;i<copy;i+=8){
int s=oggpackB_read(&source_read,copy-i<8?copy-i:8);
int d=oggpackB_read(&dest_read,copy-i<8?copy-i:8);
if(s!=d){
fprintf(stderr,"prefill=%d copy=%d mismatch! byte %d, %x!=%x\n",prefill,copy,i/8,s,d);
exit(1);
}
}
if(copy+prefill<dest_bytes){
if(oggpackB_read(&dest_read,dest_bytes-copy-prefill)!=0){
fprintf(stderr,"prefill=%d copy=%d mismatch! trailing bits not zero\n",prefill,copy);
exit(1);
}
}
oggpackB_writeclear(&source_write);
oggpackB_writeclear(&dest_write);
}
int main(void){
unsigned char *buffer;
long bytes,i;
long bytes,i,j;
static unsigned long testbuffer1[]=
{18,12,103948,4325,543,76,432,52,3,65,4,56,32,42,34,21,1,23,32,546,456,7,
567,56,8,8,55,3,52,342,341,4,265,7,67,86,2199,21,7,1,5,1,4};
@ -761,7 +946,31 @@ int main(void){
exit(1);
}
oggpack_writeclear(&o);
fprintf(stderr,"ok.\n");
fprintf(stderr,"ok.");
/* this is partly glassbox; we're mostly concerned about the allocation boundaries */
fprintf(stderr,"\nTesting aligned writecopies (LSb): ");
for(i=0;i<71;i++)
for(j=0;j<5;j++)
copytest(j*8,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=0;j<5;j++)
copytest(j*8,i);
fprintf(stderr,"ok. ");
fprintf(stderr,"\nTesting unaligned writecopies (LSb): ");
for(i=0;i<71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytest(j,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytest(j,i);
fprintf(stderr,"ok. \n");
/********** lazy, cut-n-paste retest with MSb packing ***********/
@ -846,12 +1055,34 @@ int main(void){
fprintf(stderr,"failed; read past end without -1.\n");
exit(1);
}
fprintf(stderr,"ok.");
oggpackB_writeclear(&o);
fprintf(stderr,"ok.\n\n");
/* this is partly glassbox; we're mostly concerned about the allocation boundaries */
fprintf(stderr,"\nTesting aligned writecopies (MSb): ");
for(i=0;i<71;i++)
for(j=0;j<5;j++)
copytestB(j*8,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=0;j<5;j++)
copytestB(j*8,i);
fprintf(stderr,"ok. ");
fprintf(stderr,"\nTesting unaligned writecopies (MSb): ");
for(i=0;i<71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytestB(j,i);
for(i=BUFFER_INCREMENT*8-71;i<BUFFER_INCREMENT*8+71;i++)
for(j=1;j<40;j++)
if(j&0x7)
copytestB(j,i);
fprintf(stderr,"ok. \n\n");
return(0);
}
}
#endif /* _V_SELFTEST */
#undef BUFFER_INCREMENT

200
drivers/ogg/framing.c
View File

@ -12,7 +12,7 @@
function: code raw packets into framed OggSquish stream and
decode Ogg streams back into raw packets
last mod: $Id: framing.c 17592 2010-11-01 20:27:54Z xiphmont $
last mod: $Id: framing.c 18758 2013-01-08 16:29:56Z tterribe $
note: The CRC code is directly derived from public domain code by
Ross Williams (ross@guest.adelaide.edu.au). See docs/framing.html
@ -21,6 +21,7 @@
********************************************************************/
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <ogg/ogg.h>
@ -61,7 +62,7 @@ int ogg_page_serialno(const ogg_page *og){
(og->header[16]<<16) |
(og->header[17]<<24));
}
long ogg_page_pageno(const ogg_page *og){
return(og->header[18] |
(og->header[19]<<8) |
@ -76,16 +77,16 @@ long ogg_page_pageno(const ogg_page *og){
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 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
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){
@ -205,7 +206,7 @@ int ogg_stream_init(ogg_stream_state *os,int serialno){
return(0);
}
return(-1);
}
}
/* async/delayed error detection for the ogg_stream_state */
int ogg_stream_check(ogg_stream_state *os){
@ -220,10 +221,10 @@ int ogg_stream_clear(ogg_stream_state *os){
if(os->lacing_vals)_ogg_free(os->lacing_vals);
if(os->granule_vals)_ogg_free(os->granule_vals);
memset(os,0,sizeof(*os));
memset(os,0,sizeof(*os));
}
return(0);
}
}
int ogg_stream_destroy(ogg_stream_state *os){
if(os){
@ -231,44 +232,56 @@ int ogg_stream_destroy(ogg_stream_state *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,int needed){
if(os->body_storage<=os->body_fill+needed){
static int _os_body_expand(ogg_stream_state *os,long needed){
if(os->body_storage-needed<=os->body_fill){
long body_storage;
void *ret;
ret=_ogg_realloc(os->body_data,(os->body_storage+needed+1024)*
sizeof(*os->body_data));
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+=(needed+1024);
os->body_storage=body_storage;
os->body_data=ret;
}
return 0;
}
static int _os_lacing_expand(ogg_stream_state *os,int needed){
if(os->lacing_storage<=os->lacing_fill+needed){
static int _os_lacing_expand(ogg_stream_state *os,long needed){
if(os->lacing_storage-needed<=os->lacing_fill){
long lacing_storage;
void *ret;
ret=_ogg_realloc(os->lacing_vals,(os->lacing_storage+needed+32)*
sizeof(*os->lacing_vals));
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,(os->lacing_storage+needed+32)*
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+=(needed+32);
os->lacing_storage=lacing_storage;
}
return 0;
}
@ -287,12 +300,12 @@ void ogg_page_checksum_set(ogg_page *og){
og->header[23]=0;
og->header[24]=0;
og->header[25]=0;
for(i=0;i<og->header_len;i++)
crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->header[i]];
for(i=0;i<og->body_len;i++)
crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->body[i]];
og->header[22]=(unsigned char)(crc_reg&0xff);
og->header[23]=(unsigned char)((crc_reg>>8)&0xff);
og->header[24]=(unsigned char)((crc_reg>>16)&0xff);
@ -304,26 +317,31 @@ void ogg_page_checksum_set(ogg_page *og){
int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov, int count,
long e_o_s, ogg_int64_t granulepos){
int bytes = 0, lacing_vals, i;
long bytes = 0, lacing_vals;
int i;
if(ogg_stream_check(os)) return -1;
if(!iov) return 0;
for (i = 0; i < count; ++i) bytes += (int)iov[i].iov_len;
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;
@ -467,33 +485,33 @@ static int ogg_stream_flush_i(ogg_stream_state *os,ogg_page *og, int force, int
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 */
@ -512,12 +530,20 @@ static int ogg_stream_flush_i(ogg_stream_state *os,ogg_page *og, int force, int
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
an page regardless of size in the middle of a stream. */
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) */
@ -533,10 +559,10 @@ int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og){
return(ogg_stream_flush_i(os,og,force,4096));
}
/* Like the above, but an argument is provided to adjust the nominal
/* 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;
@ -645,7 +671,7 @@ int ogg_sync_wrote(ogg_sync_state *oy, long bytes){
-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){
@ -654,54 +680,54 @@ long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){
long bytes=oy->fill-oy->returned;
if(ogg_sync_check(oy))return 0;
if(oy->headerbytes==0){
int headerbytes,i;
if(bytes<27)return(0); /* not enough for a header */
/* verify capture pattern */
if(memcmp(page,"OggS",4))goto sync_fail;
headerbytes=page[26]+27;
if(bytes<headerbytes)return(0); /* not enough for header + seg table */
/* count up body length in the segment table */
for(i=0;i<page[26];i++)
oy->bodybytes+=page[27+i];
oy->headerbytes=headerbytes;
}
if(oy->bodybytes+oy->headerbytes>bytes)return(0);
/* The whole test page is buffered. Verify the checksum */
{
/* Grab the checksum bytes, set the header field to zero */
char chksum[4];
ogg_page log;
memcpy(chksum,page+22,4);
memset(page+22,0,4);
/* set up a temp page struct and recompute the checksum */
log.header=page;
log.header_len=oy->headerbytes;
log.body=page+oy->headerbytes;
log.body_len=oy->bodybytes;
ogg_page_checksum_set(&log);
/* Compare */
if(memcmp(chksum,page+22,4)){
/* D'oh. Mismatch! Corrupt page (or miscapture and not a page
at all) */
/* replace the computed checksum with the one actually read in */
memcpy(page+22,chksum,4);
/* Bad checksum. Lose sync */
goto sync_fail;
}
}
/* yes, have a whole page all ready to go */
{
unsigned char *page=oy->data+oy->returned;
@ -720,12 +746,12 @@ long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og){
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)
@ -764,7 +790,7 @@ int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og){
/* need more data */
return(0);
}
/* head did not start a synced page... skipped some bytes */
if(!oy->unsynced){
oy->unsynced=1;
@ -793,7 +819,7 @@ int ogg_stream_pagein(ogg_stream_state *os, ogg_page *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' */
@ -848,7 +874,7 @@ int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){
/* are we a 'continued packet' page? If so, we may need to skip
some segments */
if(continued){
if(os->lacing_fill<1 ||
if(os->lacing_fill<1 ||
os->lacing_vals[os->lacing_fill-1]==0x400){
bos=0;
for(;segptr<segments;segptr++){
@ -862,7 +888,7 @@ int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){
}
}
}
if(bodysize){
if(_os_body_expand(os,bodysize)) return -1;
memcpy(os->body_data+os->body_fill,body,bodysize);
@ -875,20 +901,20 @@ int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og){
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;
@ -1493,7 +1519,7 @@ void test_pack(const int *pl, const int **headers, int byteskip,
/* 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);
@ -1509,7 +1535,7 @@ void test_pack(const int *pl, const int **headers, int byteskip,
/* retrieve any finished pages */
{
ogg_page og;
while(ogg_stream_pageout(&os_en,&og)){
/* We have a page. Check it carefully */
@ -1558,7 +1584,7 @@ void test_pack(const int *pl, const int **headers, int byteskip,
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);
@ -1572,7 +1598,7 @@ void test_pack(const int *pl, const int **headers, int byteskip,
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(memcmp(&op_de,&op_de2,sizeof(op_de))){
fprintf(stderr,"packetout != packetpeek! pos=%ld\n",
@ -1598,7 +1624,7 @@ void test_pack(const int *pl, const int **headers, int byteskip,
}
bosflag=1;
depacket+=op_de.bytes;
/* check eos flag */
if(eosflag){
fprintf(stderr,"Multiple decoded packets with eos flag!\n");
@ -1745,7 +1771,7 @@ int main(void){
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);
}
@ -1754,7 +1780,7 @@ int main(void){
/* 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);
}
@ -1764,7 +1790,7 @@ int main(void){
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);
}
@ -1773,7 +1799,7 @@ int main(void){
/* 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);
}
@ -1786,13 +1812,13 @@ int main(void){
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);
@ -1840,7 +1866,7 @@ int main(void){
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();
@ -1991,13 +2017,13 @@ int main(void){
fprintf(stderr,"ok.\n");
}
/* Test recapture: garbage + page */
{
ogg_page og_de;
fprintf(stderr,"Testing search for capture... ");
ogg_sync_reset(&oy);
ogg_sync_reset(&oy);
/* 'garbage' */
memcpy(ogg_sync_buffer(&oy,og[1].body_len),og[1].body,
og[1].body_len);
@ -2033,7 +2059,7 @@ int main(void){
{
ogg_page og_de;
fprintf(stderr,"Testing recapture... ");
ogg_sync_reset(&oy);
ogg_sync_reset(&oy);
memcpy(ogg_sync_buffer(&oy,og[1].header_len),og[1].header,
og[1].header_len);
@ -2077,13 +2103,9 @@ int main(void){
free_page(&og[i]);
}
}
}
}
return(0);
}
#endif

3
drivers/ogg/ogg.h
View File

@ -11,7 +11,7 @@
********************************************************************
function: toplevel libogg include
last mod: $Id: ogg.h 17571 2010-10-27 13:28:20Z xiphmont $
last mod: $Id: ogg.h 18044 2011-08-01 17:55:20Z gmaxwell $
********************************************************************/
#ifndef _OGG_H
@ -161,6 +161,7 @@ extern int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov,
extern int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og);
extern int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill);
extern int ogg_stream_flush(ogg_stream_state *os, ogg_page *og);
extern int ogg_stream_flush_fill(ogg_stream_state *os, ogg_page *og, int nfill);
/* Ogg BITSTREAM PRIMITIVES: decoding **************************/

4
drivers/ogg/os_types.h
View File

@ -11,7 +11,7 @@
********************************************************************
function: #ifdef jail to whip a few platforms into the UNIX ideal.
last mod: $Id: os_types.h 17712 2010-12-03 17:10:02Z xiphmont $
last mod: $Id: os_types.h 19098 2014-02-26 19:06:45Z giles $
********************************************************************/
#ifndef _OS_TYPES_H
@ -24,7 +24,7 @@
#define _ogg_realloc realloc
#define _ogg_free free
#if defined(_WIN32)
#if defined(_WIN32)
# if defined(__CYGWIN__)
# include <stdint.h>