codebook *codebook_load(char *filename){
codebook *b=_ogg_calloc(1,sizeof(codebook));
static_codebook *c=(static_codebook *)(b->c=_ogg_calloc(1,sizeof(static_codebook)));
encode_aux_nearestmatch *a=NULL;
encode_aux_threshmatch *t=NULL;
encode_aux_pigeonhole *p=NULL;
int quant_to_read=0;
FILE *in=fopen(filename,"r");
char *line;
long i;
if(in==NULL){
fprintf(stderr,"Couldn't open codebook %s\n",filename);
exit(1);
}
/* find the codebook struct */
find_seek_to(in,"static static_codebook ");
/* get the major important values */
line=get_line(in);
if(sscanf(line,"%ld, %ld,",
&(c->dim),&(c->entries))!=2){
fprintf(stderr,"1: syntax in %s in line:\t %s",filename,line);
exit(1);
}
line=get_line(in);
line=get_line(in);
if(sscanf(line,"%d, %ld, %ld, %d, %d,",
&(c->maptype),&(c->q_min),&(c->q_delta),&(c->q_quant),
&(c->q_sequencep))!=5){
fprintf(stderr,"1: syntax in %s in line:\t %s",filename,line);
exit(1);
}
/* find the auxiliary encode struct[s] (if any) */
if(find_seek_to(in,"static encode_aux_nearestmatch _vq_aux")){
/* how big? */
c->nearest_tree=a=_ogg_calloc(1,sizeof(encode_aux_nearestmatch));
line=get_line(in);
line=get_line(in);
line=get_line(in);
line=get_line(in);
line=get_line(in);
if(sscanf(line,"%ld, %ld",&(a->aux),&(a->alloc))!=2){
fprintf(stderr,"2: syntax in %s in line:\t %s",filename,line);
exit(1);
}
/* load ptr0 */
find_seek_to(in,"static long _vq_ptr0");
reset_next_value();
a->ptr0=_ogg_malloc(sizeof(long)*a->aux);
for(i=0;i<a->aux;i++)
if(get_next_ivalue(in,a->ptr0+i)){
fprintf(stderr,"out of data while reading codebook %s\n",filename);
exit(1);
}
/* load ptr1 */
find_seek_to(in,"static long _vq_ptr1");
reset_next_value();
a->ptr1=_ogg_malloc(sizeof(long)*a->aux);
for(i=0;i<a->aux;i++)
if(get_next_ivalue(in,a->ptr1+i)){
fprintf(stderr,"out of data while reading codebook %s\n",filename);
exit(1);
}
/* load p */
find_seek_to(in,"static long _vq_p_");
reset_next_value();
a->p=_ogg_malloc(sizeof(long)*a->aux);
for(i=0;i<a->aux;i++)
if(get_next_ivalue(in,a->p+i)){
fprintf(stderr,"out of data while reading codebook %s\n",filename);
exit(1);
}
/* load q */
find_seek_to(in,"static long _vq_q_");
reset_next_value();
a->q=_ogg_malloc(sizeof(long)*a->aux);
for(i=0;i<a->aux;i++)
if(get_next_ivalue(in,a->q+i)){
fprintf(stderr,"out of data while reading codebook %s\n",filename);
exit(1);
}
}
if(find_seek_to(in,"static encode_aux_threshmatch _vq_aux")){
/* how big? */
c->thresh_tree=t=_ogg_calloc(1,sizeof(encode_aux_threshmatch));
line=get_line(in);
line=get_line(in);
line=get_line(in);
if(sscanf(line,"%d",&(t->quantvals))!=1){
fprintf(stderr,"3: syntax in %s in line:\t %s",filename,line);
exit(1);
}
line=get_line(in);
if(sscanf(line,"%d",&(t->threshvals))!=1){
fprintf(stderr,"4: syntax in %s in line:\t %s",filename,line);
exit(1);
}
/* load quantthresh */
find_seek_to(in,"static float _vq_quantthresh_");
reset_next_value();
t->quantthresh=_ogg_malloc(sizeof(float)*t->threshvals);
for(i=0;i<t->threshvals-1;i++)
if(get_next_value(in,t->quantthresh+i)){
fprintf(stderr,"out of data 1 while reading codebook %s\n",filename);
exit(1);
}
/* load quantmap */
find_seek_to(in,"static long _vq_quantmap_");
reset_next_value();
t->quantmap=_ogg_malloc(sizeof(long)*t->threshvals);
for(i=0;i<t->threshvals;i++)
if(get_next_ivalue(in,t->quantmap+i)){
fprintf(stderr,"out of data 2 while reading codebook %s\n",filename);
exit(1);
}
}
if(find_seek_to(in,"static encode_aux_pigeonhole _vq_aux")){
int pigeons=1,i;
/* how big? */
c->pigeon_tree=p=_ogg_calloc(1,sizeof(encode_aux_pigeonhole));
line=get_line(in);
if(sscanf(line,"%f, %f, %d, %d",&(p->min),&(p->del),
&(p->mapentries),&(p->quantvals))!=4){
fprintf(stderr,"5: syntax in %s in line:\t %s",filename,line);
exit(1);
}
line=get_line(in);
line=get_line(in);
if(sscanf(line,"%ld",&(p->fittotal))!=1){
fprintf(stderr,"6: syntax in %s in line:\t %s",filename,line);
exit(1);
}
/* load pigeonmap */
find_seek_to(in,"static long _vq_pigeonmap_");
reset_next_value();
p->pigeonmap=_ogg_malloc(sizeof(long)*p->mapentries);
for(i=0;i<p->mapentries;i++)
if(get_next_ivalue(in,p->pigeonmap+i)){
fprintf(stderr,"out of data (pigeonmap) while reading codebook %s\n",filename);
exit(1);
}
/* load fitlist */
find_seek_to(in,"static long _vq_fitlist_");
reset_next_value();
p->fitlist=_ogg_malloc(sizeof(long)*p->fittotal);
for(i=0;i<p->fittotal;i++)
if(get_next_ivalue(in,p->fitlist+i)){
fprintf(stderr,"out of data (fitlist) while reading codebook %s\n",filename);
exit(1);
}
/* load fitmap */
find_seek_to(in,"static long _vq_fitmap_");
reset_next_value();
for(i=0;i<c->dim;i++)pigeons*=p->quantvals;
p->fitmap=_ogg_malloc(sizeof(long)*pigeons);
for(i=0;i<pigeons;i++)
if(get_next_ivalue(in,p->fitmap+i)){
fprintf(stderr,"out of data (fitmap) while reading codebook %s\n",filename);
exit(1);
}
/* load fitlength */
find_seek_to(in,"static long _vq_fitlength_");
reset_next_value();
p->fitlength=_ogg_malloc(sizeof(long)*pigeons);
for(i=0;i<pigeons;i++)
if(get_next_ivalue(in,p->fitlength+i)){
fprintf(stderr,"out of data (fitlength) while reading codebook %s\n",filename);
exit(1);
}
}
switch(c->maptype){
case 0:
quant_to_read=0;
break;
case 1:
quant_to_read=_book_maptype1_quantvals(c);
break;
case 2:
quant_to_read=c->entries*c->dim;
break;
}
/* load the quantized entries */
find_seek_to(in,"static long _vq_quantlist_");
reset_next_value();
c->quantlist=_ogg_malloc(sizeof(long)*quant_to_read);
for(i=0;i<quant_to_read;i++)
if(get_next_ivalue(in,c->quantlist+i)){
fprintf(stderr,"out of data while reading codebook %s\n",filename);
exit(1);
}
/* load the lengthlist */
find_seek_to(in,"_lengthlist");
reset_next_value();
c->lengthlist=_ogg_malloc(sizeof(long)*c->entries);
for(i=0;i<c->entries;i++)
if(get_next_ivalue(in,c->lengthlist+i)){
fprintf(stderr,"out of data while reading codebook %s\n",filename);
exit(1);
}
/* got it all */
fclose(in);
vorbis_book_init_encode(b,c);
return(b);
}
static int _vds_shared_init(vorbis_dsp_state *v,vorbis_info *vi,int encp){
int i;
codec_setup_info *ci=vi->codec_setup;
private_state *b=NULL;
int hs;
if(ci==NULL) return 1;
hs=ci->halfrate_flag;
memset(v,0,sizeof(*v));
b=v->backend_state=_ogg_calloc(1,sizeof(*b));
v->vi=vi;
b->modebits=ilog2(ci->modes);
b->transform[0]=_ogg_calloc(VI_TRANSFORMB,sizeof(*b->transform[0]));
b->transform[1]=_ogg_calloc(VI_TRANSFORMB,sizeof(*b->transform[1]));
/* MDCT is tranform 0 */
b->transform[0][0]=_ogg_calloc(1,sizeof(mdct_lookup));
b->transform[1][0]=_ogg_calloc(1,sizeof(mdct_lookup));
mdct_init(b->transform[0][0],ci->blocksizes[0]>>hs);
mdct_init(b->transform[1][0],ci->blocksizes[1]>>hs);
/* Vorbis I uses only window type 0 */
b->window[0]=ilog2(ci->blocksizes[0])-6;
b->window[1]=ilog2(ci->blocksizes[1])-6;
if(encp){ /* encode/decode differ here */
/* analysis always needs an fft */
drft_init(&b->fft_look[0],ci->blocksizes[0]);
drft_init(&b->fft_look[1],ci->blocksizes[1]);
/* finish the codebooks */
if(!ci->fullbooks){
ci->fullbooks=_ogg_calloc(ci->books,sizeof(*ci->fullbooks));
for(i=0;i<ci->books;i++)
vorbis_book_init_encode(ci->fullbooks+i,ci->book_param[i]);
}
b->psy=_ogg_calloc(ci->psys,sizeof(*b->psy));
for(i=0;i<ci->psys;i++){
_vp_psy_init(b->psy+i,
ci->psy_param[i],
&ci->psy_g_param,
ci->blocksizes[ci->psy_param[i]->blockflag]/2,
vi->rate);
}
v->analysisp=1;
}else{
/* finish the codebooks */
if(!ci->fullbooks){
ci->fullbooks=_ogg_calloc(ci->books,sizeof(*ci->fullbooks));
for(i=0;i<ci->books;i++){
if(ci->book_param[i]==NULL)
goto abort_books;
if(vorbis_book_init_decode(ci->fullbooks+i,ci->book_param[i]))
goto abort_books;
/* decode codebooks are now standalone after init */
vorbis_staticbook_destroy(ci->book_param[i]);
ci->book_param[i]=NULL;
}
}
}
/* initialize the storage vectors. blocksize[1] is small for encode,
but the correct size for decode */
v->pcm_storage=ci->blocksizes[1];
v->pcm=_ogg_malloc(vi->channels*sizeof(*v->pcm));
v->pcmret=_ogg_malloc(vi->channels*sizeof(*v->pcmret));
{
int i;
for(i=0;i<vi->channels;i++)
v->pcm[i]=_ogg_calloc(v->pcm_storage,sizeof(*v->pcm[i]));
}
/* all 1 (large block) or 0 (small block) */
/* explicitly set for the sake of clarity */
v->lW=0; /* previous window size */
v->W=0; /* current window size */
/* all vector indexes */
v->centerW=ci->blocksizes[1]/2;
v->pcm_current=v->centerW;
/* initialize all the backend lookups */
b->flr=_ogg_calloc(ci->floors,sizeof(*b->flr));
b->residue=_ogg_calloc(ci->residues,sizeof(*b->residue));
for(i=0;i<ci->floors;i++)
b->flr[i]=_floor_P[ci->floor_type[i]]->
look(v,ci->floor_param[i]);
for(i=0;i<ci->residues;i++)
b->residue[i]=_residue_P[ci->residue_type[i]]->
look(v,ci->residue_param[i]);
return 0;
abort_books:
for(i=0;i<ci->books;i++){
if(ci->book_param[i]!=NULL){
vorbis_staticbook_destroy(ci->book_param[i]);
ci->book_param[i]=NULL;
}
}
vorbis_dsp_clear(v);
return -1;
}
static int _vds_shared_init(vorbis_dsp_state *v,vorbis_info *vi,int encp){
int i;
codec_setup_info *ci=vi->codec_setup;
backend_lookup_state *b=NULL;
memset(v,0,sizeof(*v));
b=v->backend_state=_ogg_calloc(1,sizeof(*b));
v->vi=vi;
b->modebits=ilog2(ci->modes);
b->transform[0]=_ogg_calloc(VI_TRANSFORMB,sizeof(*b->transform[0]));
b->transform[1]=_ogg_calloc(VI_TRANSFORMB,sizeof(*b->transform[1]));
/* MDCT is tranform 0 */
b->transform[0][0]=_ogg_calloc(1,sizeof(mdct_lookup));
b->transform[1][0]=_ogg_calloc(1,sizeof(mdct_lookup));
mdct_init(b->transform[0][0],ci->blocksizes[0]);
mdct_init(b->transform[1][0],ci->blocksizes[1]);
b->window[0][0][0]=_ogg_calloc(VI_WINDOWB,sizeof(*b->window[0][0][0]));
b->window[0][0][1]=b->window[0][0][0];
b->window[0][1][0]=b->window[0][0][0];
b->window[0][1][1]=b->window[0][0][0];
b->window[1][0][0]=_ogg_calloc(VI_WINDOWB,sizeof(*b->window[1][0][0]));
b->window[1][0][1]=_ogg_calloc(VI_WINDOWB,sizeof(*b->window[1][0][1]));
b->window[1][1][0]=_ogg_calloc(VI_WINDOWB,sizeof(*b->window[1][1][0]));
b->window[1][1][1]=_ogg_calloc(VI_WINDOWB,sizeof(*b->window[1][1][1]));
for(i=0;i<VI_WINDOWB;i++){
b->window[0][0][0][i]=
_vorbis_window(i,ci->blocksizes[0],ci->blocksizes[0]/2,ci->blocksizes[0]/2);
b->window[1][0][0][i]=
_vorbis_window(i,ci->blocksizes[1],ci->blocksizes[0]/2,ci->blocksizes[0]/2);
b->window[1][0][1][i]=
_vorbis_window(i,ci->blocksizes[1],ci->blocksizes[0]/2,ci->blocksizes[1]/2);
b->window[1][1][0][i]=
_vorbis_window(i,ci->blocksizes[1],ci->blocksizes[1]/2,ci->blocksizes[0]/2);
b->window[1][1][1][i]=
_vorbis_window(i,ci->blocksizes[1],ci->blocksizes[1]/2,ci->blocksizes[1]/2);
}
if(encp){ /* encode/decode differ here */
/* finish the codebooks */
b->fullbooks=_ogg_calloc(ci->books,sizeof(*b->fullbooks));
for(i=0;i<ci->books;i++)
vorbis_book_init_encode(b->fullbooks+i,ci->book_param[i]);
v->analysisp=1;
}else{
/* finish the codebooks */
b->fullbooks=_ogg_calloc(ci->books,sizeof(*b->fullbooks));
for(i=0;i<ci->books;i++)
vorbis_book_init_decode(b->fullbooks+i,ci->book_param[i]);
}
/* initialize the storage vectors to a decent size greater than the
minimum */
v->pcm_storage=8192; /* we'll assume later that we have
a minimum of twice the blocksize of
accumulated samples in analysis */
v->pcm=_ogg_malloc(vi->channels*sizeof(*v->pcm));
v->pcmret=_ogg_malloc(vi->channels*sizeof(*v->pcmret));
{
int i;
for(i=0;i<vi->channels;i++)
v->pcm[i]=_ogg_calloc(v->pcm_storage,sizeof(*v->pcm[i]));
}
/* all 1 (large block) or 0 (small block) */
/* explicitly set for the sake of clarity */
v->lW=0; /* previous window size */
v->W=0; /* current window size */
/* all vector indexes */
v->centerW=ci->blocksizes[1]/2;
v->pcm_current=v->centerW;
/* initialize all the mapping/backend lookups */
b->mode=_ogg_calloc(ci->modes,sizeof(*b->mode));
for(i=0;i<ci->modes;i++){
int mapnum=ci->mode_param[i]->mapping;
int maptype=ci->map_type[mapnum];
b->mode[i]=_mapping_P[maptype]->look(v,ci->mode_param[i],
ci->map_param[mapnum]);
}
return(0);
}
