static int change_size(QSP_ARG_DECL Data_Obj *dst_dp,Data_Obj *src_dp )
{
Dimension_Set ef, *enlargement_factor=&ef;
Dimension_Set rf, *reduction_factor=&rf;
Vec_Obj_Args oa1, *oap=&oa1;
Dimension_Set size_ds, n_ds;
Dimension_Set *size_dsp=(&size_ds), *n_dsp=(&n_ds);
Data_Obj *src_ss_dp, *dst_ss_dp;
dimension_t i,j,k,l,m;
index_t offsets[N_DIMENSIONS]={0,0,0,0,0};
incr_t dst_incrs[N_DIMENSIONS], src_incrs[N_DIMENSIONS];
index_t dst_indices[N_DIMENSIONS]={0,0,0,0,0}, src_indices[N_DIMENSIONS]={0,0,0,0,0};
/* For simplicity, we don't allow size changes to be combined with conversions */
if( !dp_same_prec(QSP_ARG dst_dp,src_dp,"change_size") )
return(-1);
for(i=0;i<N_DIMENSIONS;i++){
if( OBJ_TYPE_DIM(dst_dp,i) > OBJ_TYPE_DIM(src_dp,i) ){
/* enlargement - subsample the destination */
SET_DIMENSION(enlargement_factor,i,
floor( OBJ_TYPE_DIM(dst_dp,i) / OBJ_TYPE_DIM(src_dp,i) ) );
SET_DIMENSION(reduction_factor,i, 0);
SET_DIMENSION(size_dsp,i, OBJ_TYPE_DIM(src_dp,i) );
SET_DIMENSION(n_dsp,i, DIMENSION(enlargement_factor,i) );
dst_incrs[i] = DIMENSION(n_dsp,i);
src_incrs[i] = 1;
} else {
/* reduction - subsample the source */
SET_DIMENSION(reduction_factor,i,
ceil( OBJ_TYPE_DIM(src_dp,i) / OBJ_TYPE_DIM(dst_dp,i) ) );
SET_DIMENSION(enlargement_factor,i, 0 );
SET_DIMENSION(size_dsp,i, floor( OBJ_TYPE_DIM(src_dp,i) /
DIMENSION(reduction_factor,i) ) );
/* We don't need to do this multiple times, just pick one and do it */
/*SET_DIMENSION(n_dsp,i, DIMENSION(reduction_factor,i) ); */
SET_DIMENSION(n_dsp,i, 1);
src_incrs[i] = DIMENSION(reduction_factor,i);
dst_incrs[i] = 1;
}
}
/* make the subsamples.
* the column increment is expressed in columns, etc.
*/
dst_ss_dp=make_subsamp(QSP_ARG "chngsize_dst_obj",dst_dp,size_dsp,offsets,dst_incrs);
src_ss_dp=make_subsamp(QSP_ARG "chngsize_src_obj",src_dp,size_dsp,offsets,src_incrs);
clear_obj_args(oap);
SET_OA_DEST(oap,dst_ss_dp);
SET_OA_SRC_OBJ(oap,0, src_ss_dp);
SET_OA_ARGSTYPE(oap, REAL_ARGS);
SET_OA_PFDEV(oap,OBJ_PFDEV(dst_dp));
for(i=0;i<DIMENSION(n_dsp,4);i++){ /* foreach sequence to copy */
if( dst_incrs[4] > 1 )
dst_indices[4]=i;
else src_indices[4]=i;
for(j=0;j<DIMENSION(n_dsp,3);j++){ /* foreach frame to copy */
if( dst_incrs[3] > 1 )
dst_indices[3]=j;
else src_indices[3]=j;
for(k=0;k<DIMENSION(n_dsp,2);k++){ /* foreach row */
if( dst_incrs[2] > 1 )
dst_indices[2]=k;
else src_indices[2]=k;
for(l=0;l<DIMENSION(n_dsp,1);l++){ /* foreach col */
if( dst_incrs[1] > 1 )
dst_indices[1]=l;
else src_indices[1]=l;
for(m=0;m<DIMENSION(n_dsp,0);m++){ /* foreach comp */
if( dst_incrs[0] > 1 )
dst_indices[0]=m;
else src_indices[0]=m;
/* relocate the appropriate subsample */
SET_OBJ_DATA_PTR(dst_ss_dp, multiply_indexed_data(dst_dp,dst_indices) );
SET_OBJ_DATA_PTR(src_ss_dp, multiply_indexed_data(src_dp,src_indices) );
// This doesn't check for cuda obj...
//vmov(oap);
perf_vfunc(QSP_ARG FVMOV, oap );
}
}
}
}
}
delvec(QSP_ARG dst_ss_dp);
delvec(QSP_ARG src_ss_dp);
SET_OBJ_FLAG_BITS(dst_dp, DT_ASSIGNED);
return(0);
}
static COMMAND_FUNC( mk_subsample )
{
const char *obj_name;
Data_Obj *dp;
Dimension_Set ds1, *dsp=(&ds1);
index_t offsets[N_DIMENSIONS];
long l_offset[N_DIMENSIONS];
incr_t incrs[N_DIMENSIONS];
long size[N_DIMENSIONS];
char pmpt[MAX_PMPT_LEN];
int i;
obj_name=NAMEOF("name for subsample object");
dp=pick_obj(PARENT_PROMPT);
/* We violate the rule of returning before getting
* all arguments, because the fields of dp are needed
* to determine what to prompt for!
*/
if( dp==NULL ) return;
for(i=0;i<N_DIMENSIONS;i++){
/* BUG? should we prompt for all dimensions, instead of just those > 1 ?
* If we did, then we could defer the return above...
*/
if( OBJ_TYPE_DIM(dp,i) > 1 ){
if( i < (N_DIMENSIONS-1) )
// BUG check length
sprintf(pmpt,"number of %ss per %s",dimension_name[i], dimension_name[i+1]);
else
sprintf(pmpt,"number of %ss",dimension_name[i]);
size[i]=(long) how_many(pmpt);
sprintf(pmpt,"%s offset",dimension_name[i]);
l_offset[i] = (long) how_many(pmpt);
sprintf(pmpt,"%s increment",dimension_name[i]);
incrs[i] =(incr_t)how_many(pmpt); // this can be negative...
} else {
size[i] = 1;
l_offset[i]=0;
incrs[i]=1;
}
}
for(i=0;i<N_DIMENSIONS;i++){
char offset_descr[LLEN];
INSIST_POSITIVE_DIM(size[i],dimension_name[i],"mk_subsample");
sprintf(offset_descr,"%s offset",dimension_name[i]);
INSIST_NONNEGATIVE(l_offset[i],offset_descr,"mk_subsample");
}
for(i=0;i<N_DIMENSIONS;i++){
SET_DIMENSION(dsp,i,size[i]);
offsets[i] = (index_t) l_offset[i];
}
// make_subsamp checks the increments...
if( make_subsamp(obj_name,dp,dsp,offsets,incrs) == NULL )
warn("error making subsamp object");
}
