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Diffstat (limited to 'drivers/vorbis/info.c')
-rw-r--r--drivers/vorbis/info.c673
1 files changed, 0 insertions, 673 deletions
diff --git a/drivers/vorbis/info.c b/drivers/vorbis/info.c
deleted file mode 100644
index 8a2a001f99..0000000000
--- a/drivers/vorbis/info.c
+++ /dev/null
@@ -1,673 +0,0 @@
-/********************************************************************
- * *
- * 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 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 19441 2015-01-21 01:17:41Z xiphmont $
-
- ********************************************************************/
-
-/* general handling of the header and the vorbis_info structure (and
- substructures) */
-
-#include <stdlib.h>
-#include <string.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"
-
-#define GENERAL_VENDOR_STRING "Xiph.Org libVorbis 1.3.5"
-#define ENCODE_VENDOR_STRING "Xiph.Org libVorbis I 20150105 (⛄⛄⛄⛄)"
-
-/* helpers */
-static void _v_writestring(oggpack_buffer *o,const 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,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;
-}
-
-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 */
- 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, const 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, const 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;
- 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(*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(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);
- }
- 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]<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(OV_EBADHEADER);
-}
-
-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;
- 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;
- 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_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;
-
- /* 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 */
- 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 */
- 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;
- }
-
- /* 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;
- }
-
- /* 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 */
-
- return(0);
- err_out:
- vorbis_info_clear(vi);
- 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
- the first page that identifies basic parameters, a second packet
- with bitstream comments and a third packet that holds the
- codebook. */
-
-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);
-
- /* 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(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);
- }
-
- 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(OV_EBADHEADER);
- break;
- }
- }
- }
- return(OV_EBADHEADER);
-}
-
-/* pack side **********************************************************/
-
-static int _vorbis_pack_info(oggpack_buffer *opb,vorbis_info *vi){
- 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,vi->bitrate_upper,32);
- oggpack_write(opb,vi->bitrate_nominal,32);
- oggpack_write(opb,vi->bitrate_lower,32);
-
- 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){
- int bytes = strlen(ENCODE_VENDOR_STRING);
-
- /* preamble */
- oggpack_write(opb,0x03,8);
- _v_writestring(opb,"vorbis", 6);
-
- /* vendor */
- oggpack_write(opb,bytes,32);
- _v_writestring(opb,ENCODE_VENDOR_STRING, bytes);
-
- /* comments */
-
- oggpack_write(opb,vc->comments,32);
- if(vc->comments){
- 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]);
- }else{
- oggpack_write(opb,0,32);
- }
- }
- }
- 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;
- 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)){
- 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,
- 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){
- ret=OV_EFAULT;
- goto err_out;
- }
-
- /* first header packet **********************************************/
-
- oggpack_writeinit(&opb);
- if(_vorbis_pack_info(&opb,vi))goto err_out;
-
- /* 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;
- op->packetno=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;
- op_comm->packetno=1;
-
- /* third header packet (modes/codebooks) ****************************/
-
- 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;
- op_code->packetno=2;
-
- oggpack_writeclear(&opb);
- return(0);
- err_out:
- memset(op,0,sizeof(*op));
- memset(op_comm,0,sizeof(*op_comm));
- memset(op_code,0,sizeof(*op_code));
-
- if(b){
- 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;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 01:48:50 +0000