* 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 1994-2009 *
- * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2015 *
+ * by the Xiph.Org Foundation https://xiph.org/ *
* *
********************************************************************
function: floor backend 1 implementation
- last mod: $Id$
********************************************************************/
}
}
-static int ilog(unsigned int v){
- int ret=0;
- while(v){
- ret++;
- v>>=1;
- }
- return(ret);
-}
-
-static int ilog2(unsigned int v){
- int ret=0;
- if(v)--v;
- while(v){
- ret++;
- v>>=1;
- }
- return(ret);
-}
-
static void floor1_pack (vorbis_info_floor *i,oggpack_buffer *opb){
vorbis_info_floor1 *info=(vorbis_info_floor1 *)i;
int j,k;
/* save out the post list */
oggpack_write(opb,info->mult-1,2); /* only 1,2,3,4 legal now */
- oggpack_write(opb,ilog2(maxposit),4);
- rangebits=ilog2(maxposit);
+ /* maxposit cannot legally be less than 1; this is encode-side, we
+ can assume our setup is OK */
+ oggpack_write(opb,ov_ilog(maxposit-1),4);
+ rangebits=ov_ilog(maxposit-1);
for(j=0,k=0;j<info->partitions;j++){
count+=info->class_dim[info->partitionclass[j]];
for(j=0,k=0;j<info->partitions;j++){
count+=info->class_dim[info->partitionclass[j]];
+ if(count>VIF_POSIT) goto err_out;
for(;k<count;k++){
int t=info->postlist[k+2]=oggpack_read(opb,rangebits);
if(t<0 || t>=(1<<rangebits))
vorbis_look_floor1 *look=_ogg_calloc(1,sizeof(*look));
int i,j,n=0;
+ (void)vd;
+
look->vi=info;
look->n=info->postlist[1];
/* beginning/end post */
look->frames++;
- look->postbits+=ilog(look->quant_q-1)*2;
- oggpack_write(opb,out[0],ilog(look->quant_q-1));
- oggpack_write(opb,out[1],ilog(look->quant_q-1));
+ look->postbits+=ov_ilog(look->quant_q-1)*2;
+ oggpack_write(opb,out[0],ov_ilog(look->quant_q-1));
+ oggpack_write(opb,out[1],ov_ilog(look->quant_q-1));
/* partition by partition */
/* generate the partition's first stage cascade value */
if(csubbits){
- int maxval[8];
+ int maxval[8]={0,0,0,0,0,0,0,0}; /* gcc's static analysis
+ issues a warning without
+ initialization */
for(k=0;k<csub;k++){
int booknum=info->class_subbook[class][k];
if(booknum<0){
if(oggpack_read(&vb->opb,1)==1){
int *fit_value=_vorbis_block_alloc(vb,(look->posts)*sizeof(*fit_value));
- fit_value[0]=oggpack_read(&vb->opb,ilog(look->quant_q-1));
- fit_value[1]=oggpack_read(&vb->opb,ilog(look->quant_q-1));
+ fit_value[0]=oggpack_read(&vb->opb,ov_ilog(look->quant_q-1));
+ fit_value[1]=oggpack_read(&vb->opb,ov_ilog(look->quant_q-1));
/* partition by partition */
for(i=0,j=2;i<info->partitions;i++){