static void vorbis_encode_residue_setup(vorbis_info *vi,
int number, int block,
const vorbis_residue_template *res){
codec_setup_info *ci=vi->codec_setup;
int i,n;
vorbis_info_residue0 *r=ci->residue_param[number]=
_ogg_malloc(sizeof(*r));
memcpy(r,res->res,sizeof(*r));
if(ci->residues<=number)ci->residues=number+1;
switch(ci->blocksizes[block]){
case 64:case 128:case 256:
r->grouping=16;
break;
default:
r->grouping=32;
break;
}
ci->residue_type[number]=res->res_type;
/* to be adjusted by lowpass/pointlimit later */
n=r->end=ci->blocksizes[block]>>1;
if(res->res_type==2)
n=r->end*=vi->channels;
/* fill in all the books */
{
int booklist=0,k;
if(ci->hi.managed){
for(i=0;i<r->partitions;i++)
for(k=0;k<3;k++)
if(res->books_base_managed->books[i][k])
r->secondstages[i]|=(1<<k);
r->groupbook=book_dup_or_new(ci,res->book_aux_managed);
ci->book_param[r->groupbook]=(static_codebook *)res->book_aux_managed;
for(i=0;i<r->partitions;i++){
for(k=0;k<3;k++){
if(res->books_base_managed->books[i][k]){
int bookid=book_dup_or_new(ci,res->books_base_managed->books[i][k]);
r->booklist[booklist++]=bookid;
ci->book_param[bookid]=(static_codebook *)res->books_base_managed->books[i][k];
}
}
}
}else{
for(i=0;i<r->partitions;i++)
for(k=0;k<3;k++)
if(res->books_base->books[i][k])
r->secondstages[i]|=(1<<k);
r->groupbook=book_dup_or_new(ci,res->book_aux);
ci->book_param[r->groupbook]=(static_codebook *)res->book_aux;
for(i=0;i<r->partitions;i++){
for(k=0;k<3;k++){
if(res->books_base->books[i][k]){
int bookid=book_dup_or_new(ci,res->books_base->books[i][k]);
r->booklist[booklist++]=bookid;
ci->book_param[bookid]=(static_codebook *)res->books_base->books[i][k];
}
}
}
}
}
/* lowpass setup/pointlimit */
{
double freq=ci->hi.lowpass_kHz*1000.;
vorbis_info_floor1 *f=ci->floor_param[block]; /* by convention */
double nyq=vi->rate/2.;
long blocksize=ci->blocksizes[block]>>1;
/* lowpass needs to be set in the floor and the residue. */
if(freq>nyq)freq=nyq;
/* in the floor, the granularity can be very fine; it doesn't alter
the encoding structure, only the samples used to fit the floor
approximation */
f->n=freq/nyq*blocksize;
/* this res may by limited by the maximum pointlimit of the mode,
not the lowpass. the floor is always lowpass limited. */
if(res->limit_type){
if(ci->hi.managed)
freq=ci->psy_g_param.coupling_pkHz[PACKETBLOBS-1]*1000.;
else
freq=ci->psy_g_param.coupling_pkHz[PACKETBLOBS/2]*1000.;
if(freq>nyq)freq=nyq;
}
/* in the residue, we're constrained, physically, by partition
boundaries. We still lowpass 'wherever', but we have to round up
here to next boundary, or the vorbis spec will round it *down* to
previous boundary in encode/decode */
if(ci->residue_type[block]==2){
r->end=(int)((freq/nyq*blocksize*2)/r->grouping+.9)* /* round up only if we're well past */
r->grouping;
ci->block_lowpassr[block]=r->end/2; /* lowpass (residue) */
}else{
r->end=(int)((freq/nyq*blocksize)/r->grouping+.9)* /* round up only if we're well past */
r->grouping;
ci->block_lowpassr[block]=r->end; /* lowpass (residue) */
}
}
}
static void vorbis_encode_residue_setup(vorbis_info *vi,
int number, int block,
const vorbis_residue_template *res){
codec_setup_info *ci=vi->codec_setup;
int i;
vorbis_info_residue0 *r=ci->residue_param[number]=
_ogg_malloc(sizeof(*r));
memcpy(r,res->res,sizeof(*r));
if(ci->residues<=number)ci->residues=number+1;
r->grouping=res->grouping;
ci->residue_type[number]=res->res_type;
/* fill in all the books */
{
int booklist=0,k;
if(ci->hi.managed){
for(i=0;i<r->partitions;i++)
for(k=0;k<4;k++)
if(res->books_base_managed->books[i][k])
r->secondstages[i]|=(1<<k);
r->groupbook=book_dup_or_new(ci,res->book_aux_managed);
ci->book_param[r->groupbook]=(static_codebook *)res->book_aux_managed;
for(i=0;i<r->partitions;i++){
for(k=0;k<4;k++){
if(res->books_base_managed->books[i][k]){
int bookid=book_dup_or_new(ci,res->books_base_managed->books[i][k]);
r->booklist[booklist++]=bookid;
ci->book_param[bookid]=(static_codebook *)res->books_base_managed->books[i][k];
}
}
}
}else{
for(i=0;i<r->partitions;i++)
for(k=0;k<4;k++)
if(res->books_base->books[i][k])
r->secondstages[i]|=(1<<k);
r->groupbook=book_dup_or_new(ci,res->book_aux);
ci->book_param[r->groupbook]=(static_codebook *)res->book_aux;
for(i=0;i<r->partitions;i++){
for(k=0;k<4;k++){
if(res->books_base->books[i][k]){
int bookid=book_dup_or_new(ci,res->books_base->books[i][k]);
r->booklist[booklist++]=bookid;
ci->book_param[bookid]=(static_codebook *)res->books_base->books[i][k];
}
}
}
}
}
/* lowpass setup/pointlimit */
{
double freq=ci->hi.lowpass_kHz*1000.;
vorbis_info_floor1 *f=ci->floor_param[block]; /* by convention */
double nyq=vi->rate/2.;
long blocksize=ci->blocksizes[block]>>1;
/* lowpass needs to be set in the floor and the residue. */
if(freq>nyq)freq=nyq;
/* in the floor, the granularity can be very fine; it doesn't alter
the encoding structure, only the samples used to fit the floor
approximation */
f->n=freq/nyq*blocksize;
/* this res may by limited by the maximum pointlimit of the mode,
not the lowpass. the floor is always lowpass limited. */
switch(res->limit_type){
case 1: /* point stereo limited */
if(ci->hi.managed)
freq=ci->psy_g_param.coupling_pkHz[PACKETBLOBS-1]*1000.;
else
freq=ci->psy_g_param.coupling_pkHz[PACKETBLOBS/2]*1000.;
if(freq>nyq)freq=nyq;
break;
case 2: /* LFE channel; lowpass at ~ 250Hz */
freq=250;
break;
default:
/* already set */
break;
}
/* in the residue, we're constrained, physically, by partition
boundaries. We still lowpass 'wherever', but we have to round up
here to next boundary, or the vorbis spec will round it *down* to
previous boundary in encode/decode */
if(ci->residue_type[number]==2){
/* residue 2 bundles together multiple channels; used by stereo
and surround. Count the channels in use */
/* Multiple maps/submaps can point to the same residue. In the case
of residue 2, they all better have the same number of
channels/samples. */
int j,k,ch=0;
for(i=0;i<ci->maps&&ch==0;i++){
vorbis_info_mapping0 *mi=(vorbis_info_mapping0 *)ci->map_param[i];
for(j=0;j<mi->submaps && ch==0;j++)
if(mi->residuesubmap[j]==number) /* we found a submap referencing theis residue backend */
for(k=0;k<vi->channels;k++)
if(mi->chmuxlist[k]==j) /* this channel belongs to the submap */
ch++;
}
r->end=(int)((freq/nyq*blocksize*ch)/r->grouping+.9)* /* round up only if we're well past */
r->grouping;
/* the blocksize and grouping may disagree at the end */
if(r->end>blocksize*ch)r->end=blocksize*ch/r->grouping*r->grouping;
}else{
r->end=(int)((freq/nyq*blocksize)/r->grouping+.9)* /* round up only if we're well past */
r->grouping;
/* the blocksize and grouping may disagree at the end */
if(r->end>blocksize)r->end=blocksize/r->grouping*r->grouping;
}
if(r->end==0)r->end=r->grouping; /* LFE channel */
}
}
