static void
time_read_scanline_at_a_time ()
{
ImageInput *in = ImageInput::open (input_filename.c_str());
ASSERT (in);
const ImageSpec &spec (in->spec());
size_t pixelsize = spec.nchannels * sizeof(float);
imagesize_t scanlinesize = spec.width * pixelsize;
for (int y = 0; y < spec.height; ++y) {
in->read_scanline (y+spec.y, 0, TypeDesc::TypeFloat,
&buffer[scanlinesize*y]);
}
in->close ();
delete in;
}
