/* push a sample into an allpass filter and return the sample falling out */
rev_t
allp_run(rev_t insample, ALLP_FILTER * allp) {
rev_t outsample;
rev_t pushin;
pushin = allp->in_gain * allp->fb_gain * insample + allp->fb_gain * allp->last_out;
#ifdef REVERB_CALC_FLOAT
pushin = DENORM(pushin);
#endif
outsample = push_buffer(pushin,
allp->ringbuffer, allp->buflen, allp->buffer_pos);
#ifdef REVERB_CALC_FLOAT
outsample = DENORM(outsample);
#endif
allp->last_out = outsample;
return outsample;
}
/* push a sample into a comb filter and return the sample falling out */
rev_t
comb_run(rev_t insample, COMB_FILTER * comb) {
rev_t outsample;
rev_t pushin;
pushin = comb->fb_gain * insample + biquad_run(comb->filter, comb->fb_gain * comb->last_out);
#ifdef REVERB_CALC_FLOAT
pushin = DENORM(pushin);
#endif
outsample = push_buffer(pushin,
comb->ringbuffer, comb->buflen, comb->buffer_pos);
#ifdef REVERB_CALC_FLOAT
outsample = DENORM(outsample);
#endif
comb->last_out = outsample;
return outsample;
}
PBLOB *PBLOB::baseline_normalise( //normalize blob
ROW *row, //row it came from
DENORM *denorm //inverse mapping
) {
TBOX blob_box = bounding_box ();
float x_centre = (blob_box.left () + blob_box.right ()) / 2.0;
PBLOB *bn_blob; //copied blob
*denorm = DENORM (x_centre, bln_x_height / row->x_height (), row);
bn_blob = new PBLOB; //get one
*bn_blob = *this; //deep copy
bn_blob->move (FCOORD (-denorm->origin (), -row->base_line (x_centre)));
bn_blob->scale (denorm->scale ());
bn_blob->move (FCOORD (0.0, bln_baseline_offset));
return bn_blob;
}
// Normalize in-place and record the normalization in the DENORM.
void TWERD::Normalize(ROW* row, float x_height, bool numeric_mode,
DENORM* denorm) {
TBOX word_box = bounding_box();
DENORM antidote((word_box.left() + word_box.right()) / 2.0,
kBlnXHeight / x_height, row);
if (row == NULL) {
antidote = DENORM(antidote.origin(), antidote.scale(), 0.0,
word_box.bottom(), 0, NULL, false, NULL);
}
int num_segments = 0;
DENORM_SEG *segs = new DENORM_SEG[NumBlobs()];
for (TBLOB* blob = blobs; blob != NULL; blob = blob->next) {
TBOX blob_box = blob->bounding_box();
ICOORD translation(-static_cast<int>(floor(antidote.origin() + 0.5)),
-blob_box.bottom());
float factor = antidote.scale();
if (numeric_mode) {
factor = ClipToRange(kBlnXHeight * 4.0f / (3 * blob_box.height()),
factor, factor * 1.5f);
segs[num_segments].xstart = blob->bounding_box().left();
segs[num_segments].ycoord = blob_box.bottom();
segs[num_segments++].scale_factor = factor;
} else {
float blob_x_center = (blob_box.left() + blob_box.right()) / 2.0;
float y_shift = antidote.yshift_at_orig_x(blob_x_center);
translation.set_y(-static_cast<int>(floor(y_shift + 0.5)));
}
blob->Move(translation);
blob->Scale(factor);
blob->Move(ICOORD(0, kBlnBaselineOffset));
}
if (num_segments > 0) {
antidote.set_segments(segs, num_segments);
}
delete [] segs;
if (denorm != NULL)
*denorm = antidote;
}
