* 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 1994-2007 *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2015 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: maintain the info structure, info <-> header packets
- last mod: $Id$
********************************************************************/
#include <stdlib.h>
#include <string.h>
-#include <ctype.h>
#include <ogg/ogg.h>
#include "vorbis/codec.h"
#include "codec_internal.h"
#include "misc.h"
#include "os.h"
-/* helpers */
-static int ilog2(unsigned int v){
- int ret=0;
- if(v)--v;
- while(v){
- ret++;
- v>>=1;
- }
- return(ret);
-}
+#define GENERAL_VENDOR_STRING "Xiph.Org libVorbis 1.3.6"
+#define ENCODE_VENDOR_STRING "Xiph.Org libVorbis I 20180316 (Now 100% fewer shells)"
+/* helpers */
static void _v_writestring(oggpack_buffer *o,const char *s, int bytes){
while(bytes--){
}
}
+static int _v_toupper(int c) {
+ return (c >= 'a' && c <= 'z') ? (c & ~('a' - 'A')) : c;
+}
+
void vorbis_comment_init(vorbis_comment *vc){
memset(vc,0,sizeof(*vc));
}
void vorbis_comment_add(vorbis_comment *vc,const char *comment){
vc->user_comments=_ogg_realloc(vc->user_comments,
- (vc->comments+2)*sizeof(*vc->user_comments));
+ (vc->comments+2)*sizeof(*vc->user_comments));
vc->comment_lengths=_ogg_realloc(vc->comment_lengths,
- (vc->comments+2)*sizeof(*vc->comment_lengths));
+ (vc->comments+2)*sizeof(*vc->comment_lengths));
vc->comment_lengths[vc->comments]=strlen(comment);
vc->user_comments[vc->comments]=_ogg_malloc(vc->comment_lengths[vc->comments]+1);
strcpy(vc->user_comments[vc->comments], comment);
}
void vorbis_comment_add_tag(vorbis_comment *vc, const char *tag, const char *contents){
- char *comment=alloca(strlen(tag)+strlen(contents)+2); /* +2 for = and \0 */
+ /* Length for key and value +2 for = and \0 */
+ char *comment=_ogg_malloc(strlen(tag)+strlen(contents)+2);
strcpy(comment, tag);
strcat(comment, "=");
strcat(comment, contents);
vorbis_comment_add(vc, comment);
+ _ogg_free(comment);
}
/* This is more or less the same as strncasecmp - but that doesn't exist
static int tagcompare(const char *s1, const char *s2, int n){
int c=0;
while(c < n){
- if(toupper(s1[c]) != toupper(s2[c]))
+ if(_v_toupper(s1[c]) != _v_toupper(s2[c]))
return !0;
c++;
}
long i;
int found = 0;
int taglen = strlen(tag)+1; /* +1 for the = we append */
- char *fulltag = alloca(taglen+ 1);
+ char *fulltag = _ogg_malloc(taglen+1);
strcpy(fulltag, tag);
strcat(fulltag, "=");
-
+
for(i=0;i<vc->comments;i++){
if(!tagcompare(vc->user_comments[i], fulltag, taglen)){
- if(count == found)
- /* We return a pointer to the data, not a copy */
- return vc->user_comments[i] + taglen;
- else
- found++;
+ if(count == found) {
+ /* We return a pointer to the data, not a copy */
+ _ogg_free(fulltag);
+ return vc->user_comments[i] + taglen;
+ } else {
+ found++;
+ }
}
}
+ _ogg_free(fulltag);
return NULL; /* didn't find anything */
}
int vorbis_comment_query_count(vorbis_comment *vc, const char *tag){
int i,count=0;
int taglen = strlen(tag)+1; /* +1 for the = we append */
- char *fulltag = alloca(taglen+1);
+ char *fulltag = _ogg_malloc(taglen+1);
strcpy(fulltag,tag);
strcat(fulltag, "=");
count++;
}
+ _ogg_free(fulltag);
return count;
}
void vorbis_comment_clear(vorbis_comment *vc){
if(vc){
long i;
- for(i=0;i<vc->comments;i++)
- if(vc->user_comments[i])_ogg_free(vc->user_comments[i]);
- if(vc->user_comments)_ogg_free(vc->user_comments);
- if(vc->comment_lengths)_ogg_free(vc->comment_lengths);
+ if(vc->user_comments){
+ for(i=0;i<vc->comments;i++)
+ if(vc->user_comments[i])_ogg_free(vc->user_comments[i]);
+ _ogg_free(vc->user_comments);
+ }
+ if(vc->comment_lengths)_ogg_free(vc->comment_lengths);
if(vc->vendor)_ogg_free(vc->vendor);
memset(vc,0,sizeof(*vc));
}
for(i=0;i<ci->maps;i++) /* unpack does the range checking */
if(ci->map_param[i]) /* this may be cleaning up an aborted
- unpack, in which case the below type
- cannot be trusted */
- _mapping_P[ci->map_type[i]]->free_info(ci->map_param[i]);
+ unpack, in which case the below type
+ cannot be trusted */
+ _mapping_P[ci->map_type[i]]->free_info(ci->map_param[i]);
for(i=0;i<ci->floors;i++) /* unpack does the range checking */
if(ci->floor_param[i]) /* this may be cleaning up an aborted
- unpack, in which case the below type
- cannot be trusted */
- _floor_P[ci->floor_type[i]]->free_info(ci->floor_param[i]);
-
+ unpack, in which case the below type
+ cannot be trusted */
+ _floor_P[ci->floor_type[i]]->free_info(ci->floor_param[i]);
+
for(i=0;i<ci->residues;i++) /* unpack does the range checking */
if(ci->residue_param[i]) /* this may be cleaning up an aborted
- unpack, in which case the below type
- cannot be trusted */
- _residue_P[ci->residue_type[i]]->free_info(ci->residue_param[i]);
-
+ unpack, in which case the below type
+ cannot be trusted */
+ _residue_P[ci->residue_type[i]]->free_info(ci->residue_param[i]);
+
for(i=0;i<ci->books;i++){
if(ci->book_param[i]){
- /* knows if the book was not alloced */
- vorbis_staticbook_destroy(ci->book_param[i]);
+ /* knows if the book was not alloced */
+ vorbis_staticbook_destroy(ci->book_param[i]);
}
if(ci->fullbooks)
- vorbis_book_clear(ci->fullbooks+i);
+ vorbis_book_clear(ci->fullbooks+i);
}
if(ci->fullbooks)
- _ogg_free(ci->fullbooks);
-
+ _ogg_free(ci->fullbooks);
+
for(i=0;i<ci->psys;i++)
_vi_psy_free(ci->psy_param[i]);
static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
codec_setup_info *ci=vi->codec_setup;
+ int bs;
if(!ci)return(OV_EFAULT);
vi->version=oggpack_read(opb,32);
vi->channels=oggpack_read(opb,8);
vi->rate=oggpack_read(opb,32);
- vi->bitrate_upper=oggpack_read(opb,32);
- vi->bitrate_nominal=oggpack_read(opb,32);
- vi->bitrate_lower=oggpack_read(opb,32);
+ vi->bitrate_upper=(ogg_int32_t)oggpack_read(opb,32);
+ vi->bitrate_nominal=(ogg_int32_t)oggpack_read(opb,32);
+ vi->bitrate_lower=(ogg_int32_t)oggpack_read(opb,32);
+
+ bs = oggpack_read(opb,4);
+ if(bs<0)goto err_out;
+ ci->blocksizes[0]=1<<bs;
+ bs = oggpack_read(opb,4);
+ if(bs<0)goto err_out;
+ ci->blocksizes[1]=1<<bs;
- ci->blocksizes[0]=1<<oggpack_read(opb,4);
- ci->blocksizes[1]=1<<oggpack_read(opb,4);
-
if(vi->rate<1)goto err_out;
if(vi->channels<1)goto err_out;
- if(ci->blocksizes[0]<64)goto err_out;
+ if(ci->blocksizes[0]<64)goto err_out;
if(ci->blocksizes[1]<ci->blocksizes[0])goto err_out;
if(ci->blocksizes[1]>8192)goto err_out;
int i;
int vendorlen=oggpack_read(opb,32);
if(vendorlen<0)goto err_out;
+ if(vendorlen>opb->storage-8)goto err_out;
vc->vendor=_ogg_calloc(vendorlen+1,1);
_v_readstring(opb,vc->vendor,vendorlen);
- vc->comments=oggpack_read(opb,32);
- if(vc->comments<0)goto err_out;
+ i=oggpack_read(opb,32);
+ if(i<0)goto err_out;
+ if(i>((opb->storage-oggpack_bytes(opb))>>2))goto err_out;
+ vc->comments=i;
vc->user_comments=_ogg_calloc(vc->comments+1,sizeof(*vc->user_comments));
vc->comment_lengths=_ogg_calloc(vc->comments+1, sizeof(*vc->comment_lengths));
-
+
for(i=0;i<vc->comments;i++){
int len=oggpack_read(opb,32);
if(len<0)goto err_out;
- vc->comment_lengths[i]=len;
+ if(len>opb->storage-oggpack_bytes(opb))goto err_out;
+ vc->comment_lengths[i]=len;
vc->user_comments[i]=_ogg_calloc(len+1,1);
_v_readstring(opb,vc->user_comments[i],len);
- }
+ }
if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
return(0);
static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb){
codec_setup_info *ci=vi->codec_setup;
int i;
- if(!ci)return(OV_EFAULT);
/* codebooks */
ci->books=oggpack_read(opb,8)+1;
- /*ci->book_param=_ogg_calloc(ci->books,sizeof(*ci->book_param));*/
+ if(ci->books<=0)goto err_out;
for(i=0;i<ci->books;i++){
- ci->book_param[i]=_ogg_calloc(1,sizeof(*ci->book_param[i]));
- if(vorbis_staticbook_unpack(opb,ci->book_param[i]))goto err_out;
+ ci->book_param[i]=vorbis_staticbook_unpack(opb);
+ if(!ci->book_param[i])goto err_out;
}
/* time backend settings; hooks are unused */
{
int times=oggpack_read(opb,6)+1;
+ if(times<=0)goto err_out;
for(i=0;i<times;i++){
int test=oggpack_read(opb,16);
if(test<0 || test>=VI_TIMEB)goto err_out;
/* floor backend settings */
ci->floors=oggpack_read(opb,6)+1;
- /*ci->floor_type=_ogg_malloc(ci->floors*sizeof(*ci->floor_type));*/
- /*ci->floor_param=_ogg_calloc(ci->floors,sizeof(void *));*/
+ if(ci->floors<=0)goto err_out;
for(i=0;i<ci->floors;i++){
ci->floor_type[i]=oggpack_read(opb,16);
if(ci->floor_type[i]<0 || ci->floor_type[i]>=VI_FLOORB)goto err_out;
/* residue backend settings */
ci->residues=oggpack_read(opb,6)+1;
- /*ci->residue_type=_ogg_malloc(ci->residues*sizeof(*ci->residue_type));*/
- /*ci->residue_param=_ogg_calloc(ci->residues,sizeof(void *));*/
+ if(ci->residues<=0)goto err_out;
for(i=0;i<ci->residues;i++){
ci->residue_type[i]=oggpack_read(opb,16);
if(ci->residue_type[i]<0 || ci->residue_type[i]>=VI_RESB)goto err_out;
/* map backend settings */
ci->maps=oggpack_read(opb,6)+1;
- /*ci->map_type=_ogg_malloc(ci->maps*sizeof(*ci->map_type));*/
- /*ci->map_param=_ogg_calloc(ci->maps,sizeof(void *));*/
+ if(ci->maps<=0)goto err_out;
for(i=0;i<ci->maps;i++){
ci->map_type[i]=oggpack_read(opb,16);
if(ci->map_type[i]<0 || ci->map_type[i]>=VI_MAPB)goto err_out;
ci->map_param[i]=_mapping_P[ci->map_type[i]]->unpack(vi,opb);
if(!ci->map_param[i])goto err_out;
}
-
+
/* mode settings */
ci->modes=oggpack_read(opb,6)+1;
- /*vi->mode_param=_ogg_calloc(vi->modes,sizeof(void *));*/
+ if(ci->modes<=0)goto err_out;
for(i=0;i<ci->modes;i++){
ci->mode_param[i]=_ogg_calloc(1,sizeof(*ci->mode_param[i]));
ci->mode_param[i]->blockflag=oggpack_read(opb,1);
if(ci->mode_param[i]->windowtype>=VI_WINDOWB)goto err_out;
if(ci->mode_param[i]->transformtype>=VI_WINDOWB)goto err_out;
if(ci->mode_param[i]->mapping>=ci->maps)goto err_out;
+ if(ci->mode_param[i]->mapping<0)goto err_out;
}
-
+
if(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */
return(0);
int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,ogg_packet *op){
oggpack_buffer opb;
-
+
if(op){
oggpack_readinit(&opb,op->packet,op->bytes);
memset(buffer,0,6);
_v_readstring(&opb,buffer,6);
if(memcmp(buffer,"vorbis",6)){
- /* not a vorbis header */
- return(OV_ENOTVORBIS);
+ /* not a vorbis header */
+ return(OV_ENOTVORBIS);
}
switch(packtype){
case 0x01: /* least significant *bit* is read first */
- if(!op->b_o_s){
- /* Not the initial packet */
- return(OV_EBADHEADER);
- }
- if(vi->rate!=0){
- /* previously initialized info header */
- return(OV_EBADHEADER);
- }
+ if(!op->b_o_s){
+ /* Not the initial packet */
+ return(OV_EBADHEADER);
+ }
+ if(vi->rate!=0){
+ /* previously initialized info header */
+ return(OV_EBADHEADER);
+ }
- return(_vorbis_unpack_info(vi,&opb));
+ return(_vorbis_unpack_info(vi,&opb));
case 0x03: /* least significant *bit* is read first */
- if(vi->rate==0){
- /* um... we didn't get the initial header */
- return(OV_EBADHEADER);
- }
+ if(vi->rate==0){
+ /* um... we didn't get the initial header */
+ return(OV_EBADHEADER);
+ }
+ if(vc->vendor!=NULL){
+ /* previously initialized comment header */
+ return(OV_EBADHEADER);
+ }
- return(_vorbis_unpack_comment(vc,&opb));
+ return(_vorbis_unpack_comment(vc,&opb));
case 0x05: /* least significant *bit* is read first */
- if(vi->rate==0 || vc->vendor==NULL){
- /* um... we didn;t get the initial header or comments yet */
- return(OV_EBADHEADER);
- }
-
- return(_vorbis_unpack_books(vi,&opb));
+ if(vi->rate==0 || vc->vendor==NULL){
+ /* um... we didn;t get the initial header or comments yet */
+ return(OV_EBADHEADER);
+ }
+ if(vi->codec_setup==NULL){
+ /* improperly initialized vorbis_info */
+ return(OV_EFAULT);
+ }
+ if(((codec_setup_info *)vi->codec_setup)->books>0){
+ /* previously initialized setup header */
+ return(OV_EBADHEADER);
+ }
+
+ return(_vorbis_unpack_books(vi,&opb));
default:
- /* Not a valid vorbis header type */
- return(OV_EBADHEADER);
- break;
+ /* Not a valid vorbis header type */
+ return(OV_EBADHEADER);
+ break;
}
}
}
static int _vorbis_pack_info(oggpack_buffer *opb,vorbis_info *vi){
codec_setup_info *ci=vi->codec_setup;
- if(!ci)return(OV_EFAULT);
+ if(!ci||
+ ci->blocksizes[0]<64||
+ ci->blocksizes[1]<ci->blocksizes[0]){
+ return(OV_EFAULT);
+ }
- /* preamble */
+ /* preamble */
oggpack_write(opb,0x01,8);
_v_writestring(opb,"vorbis", 6);
oggpack_write(opb,vi->bitrate_nominal,32);
oggpack_write(opb,vi->bitrate_lower,32);
- oggpack_write(opb,ilog2(ci->blocksizes[0]),4);
- oggpack_write(opb,ilog2(ci->blocksizes[1]),4);
+ oggpack_write(opb,ov_ilog(ci->blocksizes[0]-1),4);
+ oggpack_write(opb,ov_ilog(ci->blocksizes[1]-1),4);
oggpack_write(opb,1,1);
return(0);
}
static int _vorbis_pack_comment(oggpack_buffer *opb,vorbis_comment *vc){
- char temp[]="Xiph.Org libVorbis I 20070622";
- int bytes = strlen(temp);
+ int bytes = strlen(ENCODE_VENDOR_STRING);
- /* preamble */
+ /* preamble */
oggpack_write(opb,0x03,8);
_v_writestring(opb,"vorbis", 6);
/* vendor */
oggpack_write(opb,bytes,32);
- _v_writestring(opb,temp, bytes);
-
+ _v_writestring(opb,ENCODE_VENDOR_STRING, bytes);
+
/* comments */
oggpack_write(opb,vc->comments,32);
int i;
for(i=0;i<vc->comments;i++){
if(vc->user_comments[i]){
- oggpack_write(opb,vc->comment_lengths[i],32);
- _v_writestring(opb,vc->user_comments[i], vc->comment_lengths[i]);
+ oggpack_write(opb,vc->comment_lengths[i],32);
+ _v_writestring(opb,vc->user_comments[i], vc->comment_lengths[i]);
}else{
- oggpack_write(opb,0,32);
+ oggpack_write(opb,0,32);
}
}
}
return(0);
}
-
+
static int _vorbis_pack_books(oggpack_buffer *opb,vorbis_info *vi){
codec_setup_info *ci=vi->codec_setup;
int i;
return(0);
err_out:
return(-1);
-}
+}
int vorbis_commentheader_out(vorbis_comment *vc,
- ogg_packet *op){
+ ogg_packet *op){
oggpack_buffer opb;
oggpack_writeinit(&opb);
- if(_vorbis_pack_comment(&opb,vc)) return OV_EIMPL;
+ if(_vorbis_pack_comment(&opb,vc)){
+ oggpack_writeclear(&opb);
+ return OV_EIMPL;
+ }
op->packet = _ogg_malloc(oggpack_bytes(&opb));
memcpy(op->packet, opb.buffer, oggpack_bytes(&opb));
op->granulepos=0;
op->packetno=1;
+ oggpack_writeclear(&opb);
return 0;
}
int vorbis_analysis_headerout(vorbis_dsp_state *v,
- vorbis_comment *vc,
- ogg_packet *op,
- ogg_packet *op_comm,
- ogg_packet *op_code){
+ vorbis_comment *vc,
+ ogg_packet *op,
+ ogg_packet *op_comm,
+ ogg_packet *op_code){
int ret=OV_EIMPL;
vorbis_info *vi=v->vi;
oggpack_buffer opb;
private_state *b=v->backend_state;
- if(!b){
+ if(!b||vi->channels<=0||vi->channels>256){
+ b = NULL;
ret=OV_EFAULT;
goto err_out;
}
oggpack_writeclear(&opb);
return(0);
err_out:
- oggpack_writeclear(&opb);
memset(op,0,sizeof(*op));
memset(op_comm,0,sizeof(*op_comm));
memset(op_code,0,sizeof(*op_code));
if(b){
+ if(vi->channels>0)oggpack_writeclear(&opb);
if(b->header)_ogg_free(b->header);
if(b->header1)_ogg_free(b->header1);
if(b->header2)_ogg_free(b->header2);
}
double vorbis_granule_time(vorbis_dsp_state *v,ogg_int64_t granulepos){
- if(granulepos>=0)
+ if(granulepos == -1) return -1;
+
+ /* We're not guaranteed a 64 bit unsigned type everywhere, so we
+ have to put the unsigned granpo in a signed type. */
+ if(granulepos>=0){
return((double)granulepos/v->vi->rate);
- return(-1);
+ }else{
+ ogg_int64_t granuleoff=0xffffffff;
+ granuleoff<<=31;
+ granuleoff|=0x7ffffffff;
+ return(((double)granulepos+2+granuleoff+granuleoff)/v->vi->rate);
+ }
+}
+
+const char *vorbis_version_string(void){
+ return GENERAL_VENDOR_STRING;
}
projects / platform / upstream / libvorbis.git / blobdiff