static inline void
add_val (DespeckleHistogram *hist,
const guchar *src,
gint width,
gint bpp,
gint x,
gint y)
{
const gint pos = (x + (y * width)) * bpp;
const gint value = pixel_luminance (src + pos, bpp);
if (value > black_level && value < white_level)
{
histogram_add (hist, value, src + pos);
histrest++;
}
else
{
if (value <= black_level)
hist0++;
if (value >= white_level)
hist255++;
}
}
int
dogfs_read(const char *path, char *buf, size_t len, off_t off,
struct fuse_file_info *fi)
{
#ifdef SIZE_STATS
histogram_add(&reads, len);
#endif
file_t *f = get_file(fi);
int r = file_flush(f);
if (r < 0)
return r;
return run_with_connection(inode_read, f->i, buf, len, off, true);
}
int
DjVuPalette::compute_pixmap_palette(const GPixmap &pm, int ncolors, int minboxsize)
{
// Prepare histogram
histogram_clear();
{ // extra nesting for windows
for (int j=0; j<(int)pm.rows(); j++)
{
const GPixel *p = pm[j];
for (int i=0; i<(int)pm.columns(); i++)
histogram_add(p[i], 1);
}
}
// Compute palette
return compute_palette(ncolors, minboxsize);
}