gecko/media/libtheora/lib/info.c
Matthew Gregan 2a88d989cb Bug 507554 - Update in-tree libtheora to 1.1.0 (Thusnelda) plus post-release fixes from SVN. r=chris.double, rs=roc
--HG--
rename : media/libtheora/lib/dec/apiwrapper.c => media/libtheora/lib/apiwrapper.c
rename : media/libtheora/lib/dec/apiwrapper.h => media/libtheora/lib/apiwrapper.h
rename : media/libtheora/lib/dec/bitpack.c => media/libtheora/lib/bitpack.c
rename : media/libtheora/lib/dec/bitpack.h => media/libtheora/lib/bitpack.h
rename : media/libtheora/lib/dec/dct.h => media/libtheora/lib/dct.h
rename : media/libtheora/lib/dec/decapiwrapper.c => media/libtheora/lib/decapiwrapper.c
rename : media/libtheora/lib/dec/decinfo.c => media/libtheora/lib/decinfo.c
rename : media/libtheora/lib/dec/decint.h => media/libtheora/lib/decint.h
rename : media/libtheora/lib/dec/decode.c => media/libtheora/lib/decode.c
rename : media/libtheora/lib/dec/dequant.c => media/libtheora/lib/dequant.c
rename : media/libtheora/lib/dec/dequant.h => media/libtheora/lib/dequant.h
rename : media/libtheora/lib/dec/fragment.c => media/libtheora/lib/fragment.c
rename : media/libtheora/lib/dec/huffdec.c => media/libtheora/lib/huffdec.c
rename : media/libtheora/lib/dec/huffdec.h => media/libtheora/lib/huffdec.h
rename : media/libtheora/lib/dec/huffman.h => media/libtheora/lib/huffman.h
rename : media/libtheora/lib/dec/idct.c => media/libtheora/lib/idct.c
rename : media/libtheora/lib/dec/info.c => media/libtheora/lib/info.c
rename : media/libtheora/lib/dec/internal.c => media/libtheora/lib/internal.c
rename : media/libtheora/lib/dec/ocintrin.h => media/libtheora/lib/ocintrin.h
rename : media/libtheora/lib/dec/quant.c => media/libtheora/lib/quant.c
rename : media/libtheora/lib/dec/quant.h => media/libtheora/lib/quant.h
rename : media/libtheora/lib/dec/state.c => media/libtheora/lib/state.c
rename : media/libtheora/lib/dec/x86/mmxfrag.c => media/libtheora/lib/x86/mmxfrag.c
rename : media/libtheora/lib/dec/x86/mmxidct.c => media/libtheora/lib/x86/mmxidct.c
rename : media/libtheora/lib/dec/x86/mmxstate.c => media/libtheora/lib/x86/mmxstate.c
rename : media/libtheora/lib/dec/x86/x86int.h => media/libtheora/lib/x86/x86int.h
rename : media/libtheora/lib/dec/x86/x86state.c => media/libtheora/lib/x86/x86state.c
rename : media/libtheora/lib/dec/x86_vc/mmxfrag.c => media/libtheora/lib/x86_vc/mmxfrag.c
rename : media/libtheora/lib/dec/x86_vc/mmxidct.c => media/libtheora/lib/x86_vc/mmxidct.c
rename : media/libtheora/lib/dec/x86_vc/mmxstate.c => media/libtheora/lib/x86_vc/mmxstate.c
rename : media/libtheora/lib/dec/x86_vc/x86int.h => media/libtheora/lib/x86_vc/x86int.h
rename : media/libtheora/lib/dec/x86_vc/x86state.c => media/libtheora/lib/x86_vc/x86state.c
2009-09-28 11:14:21 +13:00

132 lines
3.9 KiB
C

/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora 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 Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
* *
********************************************************************
function:
last mod: $Id: info.c 16503 2009-08-22 18:14:02Z giles $
********************************************************************/
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "internal.h"
/*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.
Note: We take advantage of the fact that we know _n is less than or equal to
the length of at least one of the strings.*/
static int oc_tagcompare(const char *_s1,const char *_s2,int _n){
int c;
for(c=0;c<_n;c++){
if(toupper(_s1[c])!=toupper(_s2[c]))return !0;
}
return _s1[c]!='=';
}
void th_info_init(th_info *_info){
memset(_info,0,sizeof(*_info));
_info->version_major=TH_VERSION_MAJOR;
_info->version_minor=TH_VERSION_MINOR;
_info->version_subminor=TH_VERSION_SUB;
_info->keyframe_granule_shift=6;
}
void th_info_clear(th_info *_info){
memset(_info,0,sizeof(*_info));
}
void th_comment_init(th_comment *_tc){
memset(_tc,0,sizeof(*_tc));
}
void th_comment_add(th_comment *_tc,char *_comment){
char **user_comments;
int *comment_lengths;
int comment_len;
user_comments=_ogg_realloc(_tc->user_comments,
(_tc->comments+2)*sizeof(*_tc->user_comments));
if(user_comments==NULL)return;
_tc->user_comments=user_comments;
comment_lengths=_ogg_realloc(_tc->comment_lengths,
(_tc->comments+2)*sizeof(*_tc->comment_lengths));
if(comment_lengths==NULL)return;
_tc->comment_lengths=comment_lengths;
comment_len=strlen(_comment);
comment_lengths[_tc->comments]=comment_len;
user_comments[_tc->comments]=_ogg_malloc(comment_len+1);
if(user_comments[_tc->comments]==NULL)return;
memcpy(_tc->user_comments[_tc->comments],_comment,comment_len+1);
_tc->comments++;
_tc->user_comments[_tc->comments]=NULL;
}
void th_comment_add_tag(th_comment *_tc,char *_tag,char *_val){
char *comment;
int tag_len;
int val_len;
tag_len=strlen(_tag);
val_len=strlen(_val);
/*+2 for '=' and '\0'.*/
comment=_ogg_malloc(tag_len+val_len+2);
if(comment==NULL)return;
memcpy(comment,_tag,tag_len);
comment[tag_len]='=';
memcpy(comment+tag_len+1,_val,val_len+1);
th_comment_add(_tc,comment);
_ogg_free(comment);
}
char *th_comment_query(th_comment *_tc,char *_tag,int _count){
long i;
int found;
int tag_len;
tag_len=strlen(_tag);
found=0;
for(i=0;i<_tc->comments;i++){
if(!oc_tagcompare(_tc->user_comments[i],_tag,tag_len)){
/*We return a pointer to the data, not a copy.*/
if(_count==found++)return _tc->user_comments[i]+tag_len+1;
}
}
/*Didn't find anything.*/
return NULL;
}
int th_comment_query_count(th_comment *_tc,char *_tag){
long i;
int tag_len;
int count;
tag_len=strlen(_tag);
count=0;
for(i=0;i<_tc->comments;i++){
if(!oc_tagcompare(_tc->user_comments[i],_tag,tag_len))count++;
}
return count;
}
void th_comment_clear(th_comment *_tc){
if(_tc!=NULL){
long i;
for(i=0;i<_tc->comments;i++)_ogg_free(_tc->user_comments[i]);
_ogg_free(_tc->user_comments);
_ogg_free(_tc->comment_lengths);
_ogg_free(_tc->vendor);
memset(_tc,0,sizeof(*_tc));
}
}