Lines Matching refs:luma
329 png_uint_32 luma = base - abs(2*x-size_max);
331 /* 'luma' is now in the range 0..2*size_max, we need
334 luma = (luma*depth_max + size_max) / (2*size_max);
335 set_value(row, rowbytes, x, bit_depth, luma, gamma_table, conv);
451 const png_uint_32 luma = colors[1];
455 set_value(row, rowbytes, x, bit_depth, luma, gamma_table,
462 const png_uint_32 luma = colors[1];
468 set_value(row, rowbytes, 2*x, bit_depth, luma, gamma_table,
