/********************************************************************
* *
- * 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 1994-2003 *
+ * by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: maintain the info structure, info <-> header packets
- last mod: $Id: info.c,v 1.11 1999/12/30 07:26:39 xiphmont Exp $
+ last mod: $Id: info.c,v 1.63 2003/12/30 11:02:22 xiphmont Exp $
********************************************************************/
-/* This fills in a vorbis_info structure with settings from a few
- pre-defined encoding modes. Also handles choosing/blowing in the
- codebook */
+/* general handling of the header and the vorbis_info structure (and
+ substructures) */
#include <stdlib.h>
#include <string.h>
-#include "modes.h"
-#include "bitwise.h"
-
+#include <ctype.h>
+#include <ogg/ogg.h>
+#include "vorbis/codec.h"
+#include "codec_internal.h"
+#include "codebook.h"
+#include "registry.h"
+#include "window.h"
+#include "psy.h"
+#include "misc.h"
+#include "os.h"
+
+/* helpers */
static int ilog2(unsigned int v){
int ret=0;
- while(v>1){
+ if(v)--v;
+ while(v){
ret++;
v>>=1;
}
return(ret);
}
+
+static void _v_writestring(oggpack_buffer *o,char *s, int bytes){
+
+ 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);
+ }
+}
+
+void vorbis_comment_init(vorbis_comment *vc){
+ memset(vc,0,sizeof(*vc));
+}
+
+void vorbis_comment_add(vorbis_comment *vc,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;
+}
+
+void vorbis_comment_add_tag(vorbis_comment *vc, char *tag, char *contents){
+ char *comment=alloca(strlen(tag)+strlen(contents)+2); /* +2 for = and \0 */
+ strcpy(comment, tag);
+ strcat(comment, "=");
+ strcat(comment, contents);
+ vorbis_comment_add(vc, comment);
+}
+
+/* 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(toupper(s1[c]) != toupper(s2[c]))
+ return !0;
+ c++;
+ }
+ return 0;
+}
+
+char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count){
+ long i;
+ int found = 0;
+ int taglen = strlen(tag)+1; /* +1 for the = we append */
+ char *fulltag = alloca(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++;
+ }
+ }
+ return NULL; /* didn't find anything */
+}
+
+int vorbis_comment_query_count(vorbis_comment *vc, char *tag){
+ int i,count=0;
+ int taglen = strlen(tag)+1; /* +1 for the = we append */
+ char *fulltag = alloca(taglen+1);
+ strcpy(fulltag,tag);
+ strcat(fulltag, "=");
+
+ for(i=0;i<vc->comments;i++){
+ if(!tagcompare(vc->user_comments[i], fulltag, taglen))
+ count++;
+ }
+
+ 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->vendor)_ogg_free(vc->vendor);
+ }
+ memset(vc,0,sizeof(*vc));
+}
+
+/* blocksize 0 is guaranteed to be short, 1 is guarantted 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));
}
-/* one test mode for now; temporary of course */
-int vorbis_info_modeset(vorbis_info *vi, int mode){
- if(mode<0 || mode>predef_mode_max)return(-1);
+void vorbis_info_clear(vorbis_info *vi){
+ codec_setup_info *ci=vi->codec_setup;
+ int i;
- /* handle the flat settings first */
- memcpy(vi,&(predef_modes[mode]),sizeof(vorbis_info));
- vi->threshhold_points=threshhold_points;
- vi->user_comments=calloc(1,sizeof(char *));
- vi->vendor=strdup("Xiphophorus libVorbis I 19991104");
+ 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 */
+ _mapping_P[ci->map_type[i]]->free_info(ci->map_param[i]);
+
+ for(i=0;i<ci->floors;i++) /* unpack does the range checking */
+ _floor_P[ci->floor_type[i]]->free_info(ci->floor_param[i]);
+
+ for(i=0;i<ci->residues;i++) /* unpack does the range checking */
+ _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);
+ }
+ if(ci->fullbooks)
+ _ogg_free(ci->fullbooks);
+
+ for(i=0;i<ci->psys;i++)
+ _vi_psy_free(ci->psy_param[i]);
+
+ _ogg_free(ci);
+ }
+
+ memset(vi,0,sizeof(*vi));
+}
+
+/* Header packing/unpacking ********************************************/
+
+static int _vorbis_unpack_info(vorbis_info *vi,oggpack_buffer *opb){
+ codec_setup_info *ci=vi->codec_setup;
+ 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->bitrate_upper=oggpack_read(opb,32);
+ vi->bitrate_nominal=oggpack_read(opb,32);
+ vi->bitrate_lower=oggpack_read(opb,32);
+
+ 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]<8)goto err_out;
+ if(ci->blocksizes[1]<ci->blocksizes[0])goto err_out;
+
+ if(oggpack_read(opb,1)!=1)goto err_out; /* EOP check */
return(0);
+ err_out:
+ vorbis_info_clear(vi);
+ return(OV_EBADHEADER);
}
-/* convenience function */
-int vorbis_info_addcomment(vorbis_info *vi,char *comment){
- 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;
+static int _vorbis_unpack_comment(vorbis_comment *vc,oggpack_buffer *opb){
+ int i;
+ int vendorlen=oggpack_read(opb,32);
+ if(vendorlen<0)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;
+ 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;
+ 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_comment_clear(vc);
+ return(OV_EBADHEADER);
}
-static void _v_writestring(oggpack_buffer *o,char *s){
- while(*s){
- _oggpack_write(o,*s++,8);
+/* 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;
+ if(!ci)return(OV_EFAULT);
+
+ /* codebooks */
+ ci->books=oggpack_read(opb,8)+1;
+ /*ci->book_param=_ogg_calloc(ci->books,sizeof(*ci->book_param));*/
+ 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;
}
-}
-static void _v_readstring(oggpack_buffer *o,char *buf,int bytes){
- while(bytes--){
- *buf++=_oggpack_read(o,8);
+ /* time backend settings; hooks are unused */
+ {
+ int times=oggpack_read(opb,6)+1;
+ 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 *));*/
+ 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 */
+ 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 *));*/
+ 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;
+ }
+
+ /* 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 *));*/
+ 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 *));*/
+ 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(oggpack_read(opb,1)!=1)goto err_out; /* top level EOP check */
+
+ return(0);
+ err_out:
+ vorbis_info_clear(vi);
+ return(OV_EBADHEADER);
}
/* 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);
+ return(OV_ENOTVORBIS);
}
- switch(_oggpack_read(&opb,8)){
- case 0x80:
+ switch(packtype){
+ case 0x01: /* least significant *bit* is read first */
if(!op->b_o_s){
/* Not the initial packet */
- return(-1);
+ return(OV_EBADHEADER);
}
if(vi->rate!=0){
/* previously initialized info header */
- return(-1);
+ return(OV_EBADHEADER);
}
- if(_oggpack_read(&opb,32)!=0){
- return(-1);
- }
- 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->blocksize[0]=1<<_oggpack_read(&opb,4);
- vi->blocksize[1]=1<<_oggpack_read(&opb,4);
-
- vi->floororder[0]=_oggpack_read(&opb,8);
- vi->floororder[1]=_oggpack_read(&opb,8);
- vi->flooroctaves[0]=_oggpack_read(&opb,8);
- vi->flooroctaves[1]=_oggpack_read(&opb,8);
- vi->floorch=_oggpack_read(&opb,8);
-
- if(vi->rate<1)return(-1);
- if(vi->floorch<1 || vi->floorch>vi->channels)return(-1);
+ return(_vorbis_unpack_info(vi,&opb));
- return(0);
- case 0x81:
+ case 0x03: /* least significant *bit* is read first */
if(vi->rate==0){
- /* um... we didn;t get the initial header */
- return(-1);
- }
- {
- int vendorlen=_oggpack_read(&opb,32);
- vi->vendor=calloc(vendorlen+1,1);
- _v_readstring(&opb,vi->vendor,vendorlen);
- }
- {
- int i;
- vi->comments=_oggpack_read(&opb,32);
- vi->user_comments=calloc(vi->comments+1,sizeof(char **));
-
- for(i=0;i<vi->comments;i++){
- int len=_oggpack_read(&opb,32);
- vi->user_comments[i]=calloc(len+1,1);
- _v_readstring(&opb,vi->user_comments[i],len);
- }
+ /* um... we didn't get the initial header */
+ return(OV_EBADHEADER);
}
- return(0);
- case 0x82:
- if(vi->rate==0){
- /* um... we didn;t get the initial header */
- return(-1);
+ 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);
}
- /* not implemented quite yet */
+ return(_vorbis_unpack_books(vi,&opb));
- return(0);
default:
/* Not a valid vorbis header type */
- return(-1);
+ return(OV_EBADHEADER);
break;
}
}
}
- return(-1);
+ return(OV_EBADHEADER);
}
-int vorbis_info_headerout(vorbis_info *vi,
- ogg_packet *op,
- ogg_packet *op_comm,
- ogg_packet *op_code){
+/* pack side **********************************************************/
- oggpack_buffer opb;
- /* initial header:
-
- codec id "vorbis"
- header id 0x80 (byte)
- codec ver (4 octets, lsb first: currently 0x00)
- pcm channels (4 octets, lsb first)
- pcm rate (4 octets, lsb first)
-
- small block (4 octets, lsb first)
- large block (4 octets, lsb first)
- floor order for small block (octet)
- floor order for large block (octet)
- floor octaves for small block (octet)
- floor octaves for large block (octet)
- floorch (4 octets, lsb first)
- */
-
- _oggpack_writeinit(&opb);
- _v_writestring(&opb,"vorbis");
- _oggpack_write(&opb,0x80,8);
-
- _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,ilog2(vi->blocksize[0]),4);
- _oggpack_write(&opb,ilog2(vi->blocksize[1]),4);
- _oggpack_write(&opb,vi->floororder[0],8);
- _oggpack_write(&opb,vi->floororder[1],8);
- _oggpack_write(&opb,vi->flooroctaves[0],8);
- _oggpack_write(&opb,vi->flooroctaves[1],8);
- _oggpack_write(&opb,vi->floorch,8);
+static int _vorbis_pack_info(oggpack_buffer *opb,vorbis_info *vi){
+ codec_setup_info *ci=vi->codec_setup;
+ if(!ci)return(OV_EFAULT);
- /* build the packet */
- if(vi->header)free(vi->header);
- vi->header=malloc(_oggpack_bytes(&opb));
- memcpy(vi->header,opb.buffer,_oggpack_bytes(&opb));
- op->packet=vi->header;
- op->bytes=_oggpack_bytes(&opb);
- op->b_o_s=1;
- op->e_o_s=0;
- op->frameno=0;
-
- /* comment header:
- codec id "vorbis"
- header id 0x81 (byte)
- vendor len (4 octets, lsb first)
- vendor and id (n octects as above)
- comments (4 octets, lsb first)
- comment 0 len (4 octets, lsb first)
- comment 0 len (n octets as above)
- ...
- comment n-1 len (4 octets, lsb first)
- comment 0-1 len (n octets as above)
- */
-
- _oggpack_reset(&opb);
- _v_writestring(&opb,"vorbis");
- _oggpack_write(&opb,0x81,8);
-
- if(vi->vendor){
- _oggpack_write(&opb,strlen(vi->vendor),32);
- _v_writestring(&opb,vi->vendor);
- }else{
- _oggpack_write(&opb,0,32);
- }
+ /* 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,vi->bitrate_upper,32);
+ 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,1,1);
+
+ return(0);
+}
+
+static int _vorbis_pack_comment(oggpack_buffer *opb,vorbis_comment *vc){
+ char temp[]="Xiph.Org libVorbis I 20040629";
+ int bytes = strlen(temp);
+
+ /* preamble */
+ oggpack_write(opb,0x03,8);
+ _v_writestring(opb,"vorbis", 6);
+
+ /* vendor */
+ oggpack_write(opb,bytes,32);
+ _v_writestring(opb,temp, bytes);
- _oggpack_write(&opb,vi->comments,32);
- if(vi->comments){
+ /* 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);
}
}
}
-
- if(vi->header1)free(vi->header1);
- vi->header1=malloc(_oggpack_bytes(&opb));
- memcpy(vi->header1,opb.buffer,_oggpack_bytes(&opb));
- op_comm->packet=vi->header1;
- op_comm->bytes=_oggpack_bytes(&opb);
- op_comm->b_o_s=0;
- op_comm->e_o_s=0;
- op_comm->frameno=0;
-
- /* codebook header:
- codec id "vorbis"
- header id 0x82 (byte)
- nul so far; not encoded yet */
-
- _oggpack_reset(&opb);
- _v_writestring(&opb,"vorbis");
- _oggpack_write(&opb,0x82,8);
-
- if(vi->header2)free(vi->header2);
- vi->header2=malloc(_oggpack_bytes(&opb));
- memcpy(vi->header2,opb.buffer,_oggpack_bytes(&opb));
- op_code->packet=vi->header2;
- op_code->bytes=_oggpack_bytes(&opb);
- op_code->b_o_s=0;
- op_code->e_o_s=0;
- op_code->frameno=0;
+ oggpack_write(opb,1,1);
- _oggpack_writeclear(&opb);
+ return(0);
+}
+
+static int _vorbis_pack_books(oggpack_buffer *opb,vorbis_info *vi){
+ codec_setup_info *ci=vi->codec_setup;
+ int 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,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,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);
+ }
+
+ /* 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);
+ }
+
+ /* 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)) 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;
+
+ return 0;
}
-void vorbis_info_clear(vorbis_info *vi){
- /* clear the non-flat storage before zeroing */
+int vorbis_analysis_headerout(vorbis_dsp_state *v,
+ 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;
- /* comments */
- if(vi->user_comments){
- char **ptr=vi->user_comments;
- while(*ptr){
- free(*(ptr++));
- }
- free(vi->user_comments);
+ if(!b){
+ ret=OV_EFAULT;
+ goto err_out;
}
- /* vendor string */
- if(vi->vendor)free(vi->vendor);
+ /* first header packet **********************************************/
+
+ oggpack_writeinit(&opb);
+ if(_vorbis_pack_info(&opb,vi))goto err_out;
- /* local encoding storage */
- if(vi->header)free(vi->header);
- if(vi->header1)free(vi->header1);
- if(vi->header2)free(vi->header2);
+ /* build the packet */
+ 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->granulepos=0;
+
+ /* second header packet (comments) **********************************/
+
+ oggpack_reset(&opb);
+ if(_vorbis_pack_comment(&opb,vc))goto err_out;
+
+ 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->granulepos=0;
+
+ /* third header packet (modes/codebooks) ****************************/
- memset(vi,0,sizeof(vorbis_info));
+ oggpack_reset(&opb);
+ if(_vorbis_pack_books(&opb,vi))goto err_out;
+
+ 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->granulepos=0;
+
+ 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->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>=0)
+ return((double)granulepos/v->vi->rate);
+ return(-1);
+}
projects / platform / upstream / libvorbis.git / blobdiff