/********************************************************************
* *
- * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
- * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
- * PLEASE READ THESE TERMS DISTRIBUTING. *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
- * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
- * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
- * http://www.xiph.org/ *
+ * 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: info.c,v 1.17 2000/01/22 13:28:21 xiphmont Exp $
********************************************************************/
#include <stdlib.h>
#include <string.h>
+#include <ogg/ogg.h>
#include "vorbis/codec.h"
-#include "bitwise.h"
-#include "bookinternal.h"
+#include "codec_internal.h"
+#include "codebook.h"
#include "registry.h"
#include "window.h"
#include "psy.h"
+#include "misc.h"
+#include "os.h"
-/* helpers */
+#define GENERAL_VENDOR_STRING "Xiph.Org libVorbis 1.3.6"
+#define ENCODE_VENDOR_STRING "Xiph.Org libVorbis I 20180316 (Now 100% fewer shells)"
-static int ilog2(unsigned int v){
- int ret=0;
- while(v>1){
- ret++;
- v>>=1;
- }
- return(ret);
-}
+/* helpers */
+static void _v_writestring(oggpack_buffer *o,const char *s, int bytes){
-static void _v_writestring(oggpack_buffer *o,char *s){
- while(*s){
- _oggpack_write(o,*s++,8);
+ while(bytes--){
+ oggpack_write(o,*s++,8);
}
}
static void _v_readstring(oggpack_buffer *o,char *buf,int bytes){
while(bytes--){
- *buf++=_oggpack_read(o,8);
+ *buf++=oggpack_read(o,8);
}
}
-/* convenience functions for the interface */
-int vorbis_dsp_addcomment(vorbis_dsp_state *v,char *comment){
- vorbis_info *vi=v->vi;
- vi->user_comments=realloc(vi->user_comments,
- (vi->comments+2)*sizeof(char *));
- vi->user_comments[vi->comments]=strdup(comment);
- vi->comments++;
- vi->user_comments[vi->comments]=NULL;
- return(0);
+static int _v_toupper(int c) {
+ return (c >= 'a' && c <= 'z') ? (c & ~('a' - 'A')) : c;
}
-/* used by analysis, which has a minimally replicated vi */
-void _vorbis_info_anrep(vorbis_info *dest, vorbis_info *source){
+void vorbis_comment_init(vorbis_comment *vc){
+ memset(vc,0,sizeof(*vc));
+}
-/* libVorbis expects modes to be submitted in an already valid
- vorbis_info structure, but also expects some of the elements to be
- allocated storage. To make this easier, the Vorbis distribution
- includes a number of modes in static storage as headers. To
- allocate a copy, run it through vorbis_info_dup */
+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->comment_lengths=_ogg_realloc(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);
+ vc->comments++;
+ vc->user_comments[vc->comments]=NULL;
+}
-/* note that due to codebook size, codebooks are not fully duplicated.
- The info structure (aside from the embedded codebook elements) will
- be fully dupped */
+void vorbis_comment_add_tag(vorbis_comment *vc, const char *tag, const char *contents){
+ /* 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);
+}
-int vorbis_info_dup(vorbis_info *dest,vorbis_info *source){
- int i;
- memcpy(dest,source,sizeof(vorbis_info));
-
- /* also dup individual pieces that need to be allocated */
- /* dup user comments (unlikely to have any, but for completeness */
- if(source->comments>0){
- dest->user_comments=calloc(source->comments+1,sizeof(char *));
- for(i=0;i<source->comments;i++)
- dest->user_comments[i]=strdup(source->user_comments[i]);
+/* This is more or less the same as strncasecmp - but that doesn't exist
+ * everywhere, and this is a fairly trivial function, so we include it */
+static int tagcompare(const char *s1, const char *s2, int n){
+ int c=0;
+ while(c < n){
+ if(_v_toupper(s1[c]) != _v_toupper(s2[c]))
+ return !0;
+ c++;
}
- dest->vendor=NULL;
-
- /* modes, maps, times, floors, residues, psychoacoustics are not
- dupped; the pointer is just replicated by the above copy */
+ return 0;
+}
- /* dup (partially) books */
- if(source->books){
- dest->booklist=malloc(source->books*sizeof(codebook *));
- for(i=0;i<source->books;i++){
- dest->booklist[i]=calloc(1,sizeof(codebook));
- vorbis_book_dup(dest->booklist[i],source->booklist[i]);
+char *vorbis_comment_query(vorbis_comment *vc, const char *tag, int count){
+ long i;
+ int found = 0;
+ int taglen = strlen(tag)+1; /* +1 for the = we append */
+ 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 */
+ _ogg_free(fulltag);
+ return vc->user_comments[i] + taglen;
+ } else {
+ found++;
+ }
}
}
-
- return(0);
-err_out:
- vorbis_info_clear(dest);
- return(-1);
+ _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 = _ogg_malloc(taglen+1);
+ strcpy(fulltag,tag);
+ strcat(fulltag, "=");
- memset(vi,0,sizeof(vorbis_info));
-}
+ for(i=0;i<vc->comments;i++){
+ if(!tagcompare(vc->user_comments[i], fulltag, taglen))
+ count++;
+ }
-void vorbis_info_anclear(vorbis_info *vi){
- memset(vi,0,sizeof(vorbis_info));
+ _ogg_free(fulltag);
+ return count;
}
+void vorbis_comment_clear(vorbis_comment *vc){
+ if(vc){
+ long i;
+ 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));
+ }
+}
+/* blocksize 0 is guaranteed to be short, 1 is guaranteed to be long.
+ They may be equal, but short will never ge greater than long */
+int vorbis_info_blocksize(vorbis_info *vi,int zo){
+ codec_setup_info *ci = vi->codec_setup;
+ return ci ? ci->blocksizes[zo] : -1;
+}
/* used by synthesis, which has a full, alloced vi */
void vorbis_info_init(vorbis_info *vi){
- memset(vi,0,sizeof(vorbis_info));
+ memset(vi,0,sizeof(*vi));
+ vi->codec_setup=_ogg_calloc(1,sizeof(codec_setup_info));
}
void vorbis_info_clear(vorbis_info *vi){
+ codec_setup_info *ci=vi->codec_setup;
int i;
- if(vi->comments){
- for(i=0;i<vi->comments;i++)
- if(vi->user_comments[i])free(vi->user_comments[i]);
- free(vi->user_comments);
- }
- if(vi->vendor)free(vi->vendor);
- if(vi->windowtypes)free(vi->windowtypes);
- if(vi->transformtypes)free(vi->transformtypes);
- if(vi->modes){
- for(i=0;i<vi->modes;i++)
- if(vi->mappingtypes[i]>=0 && vi->mappingtypes[i]<VI_MAPB)
- vorbis_map_free_P[vi->mappingtypes[i]](vi->modelist[i]);
- free(vi->modelist);
- free(vi->mappingtypes);
- free(vi->blockflags);
- }
- if(vi->times){
- for(i=0;i<vi->times;i++)
- if(vi->timetypes[i]>=0 && vi->timetypes[i]<VI_TIMEB)
- vorbis_time_free_P[vi->timetypes[i]](vi->timelist[i]);
- free(vi->timelist);
- free(vi->timetypes);
- }
- if(vi->floors){
- for(i=0;i<vi->floors;i++)
- if(vi->floortypes[i]>=0 && vi->floortypes[i]<VI_FLOORB)
- vorbis_floor_free_P[vi->floortypes[i]](vi->floorlist[i]);
- free(vi->floorlist);
- free(vi->floortypes);
- }
- if(vi->residues){
- for(i=0;i<vi->residues;i++)
- if(vi->residuetypes[i]>=0 && vi->residuetypes[i]<VI_RESB)
- vorbis_res_free_P[vi->residuetypes[i]](vi->residuelist[i]);
- free(vi->residuelist);
- free(vi->residuetypes);
- }
- if(vi->books){
- for(i=0;i<vi->books;i++){
- if(vi->booklist[i]){
- vorbis_book_clear(vi->booklist[i]);
- free(vi->booklist[i]);
+
+ if(ci){
+
+ for(i=0;i<ci->modes;i++)
+ if(ci->mode_param[i])_ogg_free(ci->mode_param[i]);
+
+ 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]);
+
+ 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]);
+
+ 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]);
+
+ 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]);
}
+ if(ci->fullbooks)
+ vorbis_book_clear(ci->fullbooks+i);
}
- free(vi->booklist);
- }
- if(vi->psys){
- for(i=0;i<vi->psys;i++)
- _vi_psy_free(vi->psylist[i]);
- free(vi->psylist);
+ if(ci->fullbooks)
+ _ogg_free(ci->fullbooks);
+
+ for(i=0;i<ci->psys;i++)
+ _vi_psy_free(ci->psy_param[i]);
+
+ _ogg_free(ci);
}
-
- if(vi->header)free(vi->header);
- if(vi->header1)free(vi->header1);
- if(vi->header2)free(vi->header2);
- memset(vi,0,sizeof(vorbis_info));
+ memset(vi,0,sizeof(*vi));
}
/* Header packing/unpacking ********************************************/
static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
- vi->version=_oggpack_read(opb,32);
- if(vi->version!=0)return(-1);
+ codec_setup_info *ci=vi->codec_setup;
+ int bs;
+ if(!ci)return(OV_EFAULT);
+
+ vi->version=oggpack_read(opb,32);
+ if(vi->version!=0)return(OV_EVERSION);
+
+ vi->channels=oggpack_read(opb,8);
+ vi->rate=oggpack_read(opb,32);
- vi->channels=_oggpack_read(opb,8);
- vi->rate=_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);
- vi->bitrate_upper=_oggpack_read(opb,32);
- vi->bitrate_nominal=_oggpack_read(opb,32);
- vi->bitrate_lower=_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;
- vi->blocksizes[0]=1<<_oggpack_read(opb,4);
- vi->blocksizes[1]=1<<_oggpack_read(opb,4);
-
if(vi->rate<1)goto err_out;
if(vi->channels<1)goto err_out;
- if(vi->blocksizes[0]<8)goto err_out;
- if(vi->blocksizes[1]<vi->blocksizes[0])goto err_out;
-
- if(_oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
+ 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;
+
+ if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
return(0);
err_out:
vorbis_info_clear(vi);
- return(-1);
+ return(OV_EBADHEADER);
}
-static int _vorbis_unpack_comments(vorbis_info *vi,oggpack_buffer *opb){
+static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){
int i;
- int vendorlen=_oggpack_read(opb,32);
+ int vendorlen=oggpack_read(opb,32);
if(vendorlen<0)goto err_out;
- vi->vendor=calloc(vendorlen+1,1);
- _v_readstring(opb,vi->vendor,vendorlen);
- vi->comments=_oggpack_read(opb,32);
- if(vi->comments<0)goto err_out;
- vi->user_comments=calloc(vi->comments+1,sizeof(char **));
-
- for(i=0;i<vi->comments;i++){
- int len=_oggpack_read(opb,32);
+ if(vendorlen>opb->storage-8)goto err_out;
+ vc->vendor=_ogg_calloc(vendorlen+1,1);
+ _v_readstring(opb,vc->vendor,vendorlen);
+ 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;
- vi->user_comments[i]=calloc(len+1,1);
- _v_readstring(opb,vi->user_comments[i],len);
- }
- if(_oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
+ 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);
err_out:
- vorbis_info_clear(vi);
- return(-1);
+ vorbis_comment_clear(vc);
+ return(OV_EBADHEADER);
}
/* all of the real encoding details are here. The modes, books,
everything */
static int _vorbis_unpack_books(vorbis_info *vi,oggpack_buffer *opb){
+ codec_setup_info *ci=vi->codec_setup;
int i;
- /* time backend settings */
- vi->times=_oggpack_read(opb,8);
- vi->timetypes=malloc(vi->times*sizeof(int));
- vi->timelist=calloc(vi->times,sizeof(void *));
- for(i=0;i<vi->times;i++){
- vi->timetypes[i]=_oggpack_read(opb,16);
- if(vi->timetypes[i]<0 || vi->timetypes[i]>VI_TIMEB)goto err_out;
- vi->timelist[i]=vorbis_time_unpack_P[vi->timetypes[i]](vi,opb);
- if(!vi->timelist[i])goto err_out;
+ /* codebooks */
+ ci->books=oggpack_read(opb,8)+1;
+ if(ci->books<=0)goto err_out;
+ for(i=0;i<ci->books;i++){
+ 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 */
- vi->floors=_oggpack_read(opb,8);
- vi->floortypes=malloc(vi->floors*sizeof(int));
- vi->floorlist=calloc(vi->floors,sizeof(void *));
- for(i=0;i<vi->floors;i++){
- vi->floortypes[i]=_oggpack_read(opb,16);
- if(vi->floortypes[i]<0 || vi->floortypes[i]>VI_FLOORB)goto err_out;
- vi->floorlist[i]=vorbis_floor_unpack_P[vi->floortypes[i]](vi,opb);
- if(!vi->floorlist[i])goto err_out;
+ ci->floors=oggpack_read(opb,6)+1;
+ 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;
+ ci->floor_param[i]=_floor_P[ci->floor_type[i]]->unpack(vi,opb);
+ if(!ci->floor_param[i])goto err_out;
}
/* residue backend settings */
- vi->residues=_oggpack_read(opb,8);
- vi->residuetypes=malloc(vi->residues*sizeof(int));
- vi->residuelist=calloc(vi->residues,sizeof(void *));
- for(i=0;i<vi->residues;i++){
- vi->residuetypes[i]=_oggpack_read(opb,16);
- if(vi->residuetypes[i]<0 || vi->residuetypes[i]>VI_RESB)goto err_out;
- vi->residuelist[i]=vorbis_res_unpack_P[vi->residuetypes[i]](vi,opb);
- if(!vi->residuelist[i])goto err_out;
+ ci->residues=oggpack_read(opb,6)+1;
+ 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;
+ ci->residue_param[i]=_residue_P[ci->residue_type[i]]->unpack(vi,opb);
+ if(!ci->residue_param[i])goto err_out;
}
- /* codebooks */
- vi->books=_oggpack_read(opb,16);
- vi->booklist=calloc(vi->books,sizeof(codebook *));
- for(i=0;i<vi->books;i++){
- vi->booklist[i]=calloc(1,sizeof(codebook));
- if(vorbis_book_unpack(opb,vi->booklist[i]))goto err_out;
+ /* map backend settings */
+ ci->maps=oggpack_read(opb,6)+1;
+ 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;
}
- /* modes/mappings; these are loaded last in order that the mappings
- can range-check their time/floor/res/book settings */
- vi->modes=_oggpack_read(opb,8);
- vi->blockflags=malloc(vi->modes*sizeof(int));
- vi->windowtypes=malloc(vi->modes*sizeof(int));
- vi->transformtypes=malloc(vi->modes*sizeof(int));
- vi->mappingtypes=malloc(vi->modes*sizeof(int));
- vi->modelist=calloc(vi->modes,sizeof(void *));
- for(i=0;i<vi->modes;i++){
- vi->blockflags[i]=_oggpack_read(opb,1);
- vi->windowtypes[i]=_oggpack_read(opb,16);
- vi->transformtypes[i]=_oggpack_read(opb,16);
- vi->mappingtypes[i]=_oggpack_read(opb,16);
- if(vi->windowtypes[i]<0 || vi->windowtypes[i]>VI_WINDOWB)goto err_out;
- if(vi->transformtypes[i]<0 || vi->transformtypes[i]>VI_TRANSFORMB)goto err_out;
- if(vi->mappingtypes[i]<0 || vi->mappingtypes[i]>VI_MAPB)goto err_out;
- vi->modelist[i]=vorbis_map_unpack_P[vi->mappingtypes[i]](vi,opb);
- if(!vi->modelist[i])goto err_out;
+ /* mode settings */
+ ci->modes=oggpack_read(opb,6)+1;
+ 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);
+ ci->mode_param[i]->windowtype=oggpack_read(opb,16);
+ ci->mode_param[i]->transformtype=oggpack_read(opb,16);
+ ci->mode_param[i]->mapping=oggpack_read(opb,8);
+
+ 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 */
+ if(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */
return(0);
-err_out:
+ err_out:
vorbis_info_clear(vi);
- return(-1);
+ return(OV_EBADHEADER);
+}
+
+/* Is this packet a vorbis ID header? */
+int vorbis_synthesis_idheader(ogg_packet *op){
+ oggpack_buffer opb;
+ char buffer[6];
+
+ if(op){
+ oggpack_readinit(&opb,op->packet,op->bytes);
+
+ if(!op->b_o_s)
+ return(0); /* Not the initial packet */
+
+ if(oggpack_read(&opb,8) != 1)
+ return 0; /* not an ID header */
+
+ memset(buffer,0,6);
+ _v_readstring(&opb,buffer,6);
+ if(memcmp(buffer,"vorbis",6))
+ return 0; /* not vorbis */
+
+ return 1;
+ }
+
+ return 0;
}
/* The Vorbis header is in three packets; the initial small packet in
with bitstream comments and a third packet that holds the
codebook. */
-int vorbis_info_headerin(vorbis_info *vi,ogg_packet *op){
-
+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);
+ oggpack_readinit(&opb,op->packet,op->bytes);
/* Which of the three types of header is this? */
/* Also verify header-ness, vorbis */
{
char buffer[6];
+ int packtype=oggpack_read(&opb,8);
memset(buffer,0,6);
_v_readstring(&opb,buffer,6);
if(memcmp(buffer,"vorbis",6)){
- /* not a vorbis header */
- return(-1);
+ /* not a vorbis header */
+ return(OV_ENOTVORBIS);
}
- switch(_oggpack_read(&opb,8)){
- case 0x80:
- if(!op->b_o_s){
- /* Not the initial packet */
- return(-1);
- }
- if(vi->rate!=0){
- /* previously initialized info header */
- return(-1);
- }
-
- return(_vorbis_unpack_info(vi,&opb));
-
- case 0x81:
- if(vi->rate==0){
- /* um... we didn't get the initial header */
- return(-1);
- }
-
- return(_vorbis_unpack_comments(vi,&opb));
-
- case 0x82:
- if(vi->rate==0 || vi->vendor==NULL){
- /* um... we didn;t get the initial header or comments yet */
- return(-1);
- }
-
- return(_vorbis_unpack_books(vi,&opb));
+ 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);
+ }
+
+ 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(vc->vendor!=NULL){
+ /* previously initialized comment header */
+ return(OV_EBADHEADER);
+ }
+
+ 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);
+ }
+ 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(-1);
- break;
+ /* Not a valid vorbis header type */
+ return(OV_EBADHEADER);
+ break;
}
}
}
- return(-1);
+ return(OV_EBADHEADER);
}
/* pack side **********************************************************/
static int _vorbis_pack_info(oggpack_buffer *opb,vorbis_info *vi){
- /* preamble */
- _v_writestring(opb,"vorbis");
- _oggpack_write(opb,0x80,8);
+ codec_setup_info *ci=vi->codec_setup;
+ if(!ci||
+ ci->blocksizes[0]<64||
+ ci->blocksizes[1]<ci->blocksizes[0]){
+ return(OV_EFAULT);
+ }
+
+ /* preamble */
+ oggpack_write(opb,0x01,8);
+ _v_writestring(opb,"vorbis", 6);
/* basic information about the stream */
- _oggpack_write(opb,0x00,32);
- _oggpack_write(opb,vi->channels,8);
- _oggpack_write(opb,vi->rate,32);
+ oggpack_write(opb,0x00,32);
+ oggpack_write(opb,vi->channels,8);
+ oggpack_write(opb,vi->rate,32);
- _oggpack_write(opb,vi->bitrate_upper,32);
- _oggpack_write(opb,vi->bitrate_nominal,32);
- _oggpack_write(opb,vi->bitrate_lower,32);
+ oggpack_write(opb,vi->bitrate_upper,32);
+ oggpack_write(opb,vi->bitrate_nominal,32);
+ oggpack_write(opb,vi->bitrate_lower,32);
- _oggpack_write(opb,ilog2(vi->blocksizes[0]),4);
- _oggpack_write(opb,ilog2(vi->blocksizes[1]),4);
- _oggpack_write(opb,1,1);
+ 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_comments(oggpack_buffer *opb,vorbis_info *vi){
- char temp[]="Xiphophorus libVorbis I 20000114";
+static int _vorbis_pack_comment(oggpack_buffer *opb,vorbis_comment *vc){
+ int bytes = strlen(ENCODE_VENDOR_STRING);
- /* preamble */
- _v_writestring(opb,"vorbis");
- _oggpack_write(opb,0x81,8);
+ /* preamble */
+ oggpack_write(opb,0x03,8);
+ _v_writestring(opb,"vorbis", 6);
/* vendor */
- _oggpack_write(opb,strlen(temp),32);
- _v_writestring(opb,temp);
-
+ oggpack_write(opb,bytes,32);
+ _v_writestring(opb,ENCODE_VENDOR_STRING, bytes);
+
/* comments */
- _oggpack_write(opb,vi->comments,32);
- if(vi->comments){
+ oggpack_write(opb,vc->comments,32);
+ if(vc->comments){
int i;
- for(i=0;i<vi->comments;i++){
- if(vi->user_comments[i]){
- _oggpack_write(opb,strlen(vi->user_comments[i]),32);
- _v_writestring(opb,vi->user_comments[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]);
}else{
- _oggpack_write(opb,0,32);
+ oggpack_write(opb,0,32);
}
}
}
- _oggpack_write(opb,1,1);
+ oggpack_write(opb,1,1);
return(0);
}
-
+
static int _vorbis_pack_books(oggpack_buffer *opb,vorbis_info *vi){
+ codec_setup_info *ci=vi->codec_setup;
int i;
- _v_writestring(opb,"vorbis");
- _oggpack_write(opb,0x82,8);
-
- /* times */
- _oggpack_write(opb,vi->times,8);
- for(i=0;i<vi->times;i++){
- _oggpack_write(opb,vi->timetypes[i],16);
- vorbis_time_pack_P[vi->timetypes[i]](opb,vi->timelist[i]);
- }
+ if(!ci)return(OV_EFAULT);
+
+ oggpack_write(opb,0x05,8);
+ _v_writestring(opb,"vorbis", 6);
+
+ /* books */
+ oggpack_write(opb,ci->books-1,8);
+ for(i=0;i<ci->books;i++)
+ if(vorbis_staticbook_pack(ci->book_param[i],opb))goto err_out;
+
+ /* times; hook placeholders */
+ oggpack_write(opb,0,6);
+ oggpack_write(opb,0,16);
/* floors */
- _oggpack_write(opb,vi->floors,8);
- for(i=0;i<vi->floors;i++){
- _oggpack_write(opb,vi->floortypes[i],16);
- vorbis_floor_pack_P[vi->floortypes[i]](opb,vi->floorlist[i]);
+ oggpack_write(opb,ci->floors-1,6);
+ for(i=0;i<ci->floors;i++){
+ oggpack_write(opb,ci->floor_type[i],16);
+ if(_floor_P[ci->floor_type[i]]->pack)
+ _floor_P[ci->floor_type[i]]->pack(ci->floor_param[i],opb);
+ else
+ goto err_out;
}
/* residues */
- _oggpack_write(opb,vi->residues,8);
- for(i=0;i<vi->residues;i++){
- _oggpack_write(opb,vi->residuetypes[i],16);
- vorbis_res_pack_P[vi->residuetypes[i]](opb,vi->residuelist[i]);
+ oggpack_write(opb,ci->residues-1,6);
+ for(i=0;i<ci->residues;i++){
+ oggpack_write(opb,ci->residue_type[i],16);
+ _residue_P[ci->residue_type[i]]->pack(ci->residue_param[i],opb);
}
- /* books */
- _oggpack_write(opb,vi->books,16);
- for(i=0;i<vi->books;i++)
- if(vorbis_book_pack(vi->booklist[i],opb))goto err_out;
-
- /* mode mappings */
-
- _oggpack_write(opb,vi->modes,8);
- for(i=0;i<vi->modes;i++){
- _oggpack_write(opb,vi->blockflags[i],1);
- _oggpack_write(opb,vi->windowtypes[i],16);
- _oggpack_write(opb,vi->transformtypes[i],16);
- _oggpack_write(opb,vi->mappingtypes[i],16);
- vorbis_map_pack_P[vi->mappingtypes[i]](vi,opb,vi->modelist[i]);
+ /* maps */
+ oggpack_write(opb,ci->maps-1,6);
+ for(i=0;i<ci->maps;i++){
+ oggpack_write(opb,ci->map_type[i],16);
+ _mapping_P[ci->map_type[i]]->pack(vi,ci->map_param[i],opb);
}
- _oggpack_write(opb,1,1);
+ /* modes */
+ oggpack_write(opb,ci->modes-1,6);
+ for(i=0;i<ci->modes;i++){
+ oggpack_write(opb,ci->mode_param[i]->blockflag,1);
+ oggpack_write(opb,ci->mode_param[i]->windowtype,16);
+ oggpack_write(opb,ci->mode_param[i]->transformtype,16);
+ oggpack_write(opb,ci->mode_param[i]->mapping,8);
+ }
+ oggpack_write(opb,1,1);
return(0);
err_out:
return(-1);
-}
+}
+
+int vorbis_commentheader_out(vorbis_comment *vc,
+ ogg_packet *op){
+
+ oggpack_buffer opb;
+
+ oggpack_writeinit(&opb);
+ 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->bytes=oggpack_bytes(&opb);
+ op->b_o_s=0;
+ op->e_o_s=0;
+ op->granulepos=0;
+ op->packetno=1;
+
+ oggpack_writeclear(&opb);
+ return 0;
+}
int vorbis_analysis_headerout(vorbis_dsp_state *v,
- 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||vi->channels<=0||vi->channels>256){
+ b = NULL;
+ ret=OV_EFAULT;
+ goto err_out;
+ }
/* first header packet **********************************************/
- _oggpack_writeinit(&opb);
+ oggpack_writeinit(&opb);
if(_vorbis_pack_info(&opb,vi))goto err_out;
/* build the packet */
- if(v->header)free(v->header);
- v->header=malloc(_oggpack_bytes(&opb));
- memcpy(v->header,opb.buffer,_oggpack_bytes(&opb));
- op->packet=v->header;
- op->bytes=_oggpack_bytes(&opb);
+ if(b->header)_ogg_free(b->header);
+ b->header=_ogg_malloc(oggpack_bytes(&opb));
+ memcpy(b->header,opb.buffer,oggpack_bytes(&opb));
+ op->packet=b->header;
+ op->bytes=oggpack_bytes(&opb);
op->b_o_s=1;
op->e_o_s=0;
- op->frameno=0;
+ op->granulepos=0;
+ op->packetno=0;
/* second header packet (comments) **********************************/
- _oggpack_reset(&opb);
- _v_writestring(&opb,"vorbis");
- _oggpack_write(&opb,0x81,8);
- if(_vorbis_pack_comments(&opb,vi))goto err_out;
+ oggpack_reset(&opb);
+ if(_vorbis_pack_comment(&opb,vc))goto err_out;
- if(v->header1)free(v->header1);
- v->header1=malloc(_oggpack_bytes(&opb));
- memcpy(v->header1,opb.buffer,_oggpack_bytes(&opb));
- op_comm->packet=v->header1;
- op_comm->bytes=_oggpack_bytes(&opb);
+ if(b->header1)_ogg_free(b->header1);
+ b->header1=_ogg_malloc(oggpack_bytes(&opb));
+ memcpy(b->header1,opb.buffer,oggpack_bytes(&opb));
+ op_comm->packet=b->header1;
+ op_comm->bytes=oggpack_bytes(&opb);
op_comm->b_o_s=0;
op_comm->e_o_s=0;
- op_comm->frameno=0;
+ op_comm->granulepos=0;
+ op_comm->packetno=1;
/* third header packet (modes/codebooks) ****************************/
- _oggpack_reset(&opb);
- _v_writestring(&opb,"vorbis");
- _oggpack_write(&opb,0x82,8);
+ oggpack_reset(&opb);
if(_vorbis_pack_books(&opb,vi))goto err_out;
- if(v->header2)free(v->header2);
- v->header2=malloc(_oggpack_bytes(&opb));
- memcpy(v->header2,opb.buffer,_oggpack_bytes(&opb));
- op_code->packet=v->header2;
- op_code->bytes=_oggpack_bytes(&opb);
+ if(b->header2)_ogg_free(b->header2);
+ b->header2=_ogg_malloc(oggpack_bytes(&opb));
+ memcpy(b->header2,opb.buffer,oggpack_bytes(&opb));
+ op_code->packet=b->header2;
+ op_code->bytes=oggpack_bytes(&opb);
op_code->b_o_s=0;
op_code->e_o_s=0;
- op_code->frameno=0;
+ op_code->granulepos=0;
+ op_code->packetno=2;
- _oggpack_writeclear(&opb);
+ oggpack_writeclear(&opb);
return(0);
err_out:
- _oggpack_writeclear(&opb);
- memset(op,0,sizeof(ogg_packet));
- memset(op_comm,0,sizeof(ogg_packet));
- memset(op_code,0,sizeof(ogg_packet));
- return(-1);
+ 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);
+ b->header=NULL;
+ b->header1=NULL;
+ b->header2=NULL;
+ }
+ return(ret);
}
+double vorbis_granule_time(vorbis_dsp_state *v,ogg_int64_t granulepos){
+ 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);
+ }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;
+}