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#478 chemspill: M1446062 fixes M1446068

This commit is contained in:
Cameron Kaiser 2018-03-15 20:27:07 -07:00
parent 9143ede148
commit fd2f991b56
1 changed files with 10 additions and 38 deletions
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48
media/libvorbis/lib/vorbis_codebook.c
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@ -387,7 +387,7 @@ long vorbis_book_decodevs_add(codebook *book,float *a,oggpack_buffer *b,int n){
t[i] = book->valuelist+entry[i]*book->dim; t[i] = book->valuelist+entry[i]*book->dim;
} }
for(i=0,o=0;i<book->dim;i++,o+=step) for(i=0,o=0;i<book->dim;i++,o+=step)
for (j=0;j<step;j++) for (j=0;o+j<n && j<step;j++)
a[o+j]+=t[j][i]; a[o+j]+=t[j][i];
} }
return(0); return(0);
@ -399,41 +399,12 @@ long vorbis_book_decodev_add(codebook *book,float *a,oggpack_buffer *b,int n){
int i,j,entry; int i,j,entry;
float *t; float *t;
if(book->dim>8){ for(i=0;i<n;){
for(i=0;i<n;){ entry = decode_packed_entry_number(book,b);
entry = decode_packed_entry_number(book,b); if(entry==-1)return(-1);
if(entry==-1)return(-1); t = book->valuelist+entry*book->dim;
t = book->valuelist+entry*book->dim; for(j=0;i<n && j<book->dim;)
for (j=0;j<book->dim;) a[i++]+=t[j++];
a[i++]+=t[j++];
}
}else{
for(i=0;i<n;){
entry = decode_packed_entry_number(book,b);
if(entry==-1)return(-1);
t = book->valuelist+entry*book->dim;
j=0;
switch((int)book->dim){
case 8:
a[i++]+=t[j++];
case 7:
a[i++]+=t[j++];
case 6:
a[i++]+=t[j++];
case 5:
a[i++]+=t[j++];
case 4:
a[i++]+=t[j++];
case 3:
a[i++]+=t[j++];
case 2:
a[i++]+=t[j++];
case 1:
a[i++]+=t[j++];
case 0:
break;
}
}
} }
} }
return(0); return(0);
@ -471,12 +442,13 @@ long vorbis_book_decodevv_add(codebook *book,float **a,long offset,int ch,
long i,j,entry; long i,j,entry;
int chptr=0; int chptr=0;
if(book->used_entries>0){ if(book->used_entries>0){
for(i=offset/ch;i<(offset+n)/ch;){ int m=(offset+n)/ch;
for(i=offset/ch;i<m;){
entry = decode_packed_entry_number(book,b); entry = decode_packed_entry_number(book,b);
if(entry==-1)return(-1); if(entry==-1)return(-1);
{ {
const float *t = book->valuelist+entry*book->dim; const float *t = book->valuelist+entry*book->dim;
for (j=0;j<book->dim;j++){ for (j=0;i<m && j<book->dim;j++){
a[chptr++][i]+=t[j]; a[chptr++][i]+=t[j];
if(chptr==ch){ if(chptr==ch){
chptr=0; chptr=0;