1389 #  define P_LINEAR  2 /* 16-bit linear: not encoded, NOT pre-multiplied! */  macro
1831       case P_LINEAR:  in decode_gamma()
1865    if (encoding == P_LINEAR)  in png_colormap_compose()
1891       P_LINEAR : P_sRGB;  in png_create_colormap_entry()
1920       if (convert_to_Y || output_encoding == P_LINEAR)  in png_create_colormap_entry()
1923          encoding = P_LINEAR;  in png_create_colormap_entry()
1944       encoding = P_LINEAR;  in png_create_colormap_entry()
1947    else if (encoding == P_sRGB && (convert_to_Y || output_encoding == P_LINEAR))  in png_create_colormap_entry()
1956       encoding = P_LINEAR;  in png_create_colormap_entry()
1960    if (encoding == P_LINEAR)  in png_create_colormap_entry()
1968          if (output_encoding == P_LINEAR)  in png_create_colormap_entry()
2010       if (output_encoding == P_LINEAR)  in png_create_colormap_entry()
2218       P_LINEAR : P_sRGB;  in png_image_read_colormap()
2242       if (output_encoding == P_LINEAR) /* compose on black */  in png_image_read_colormap()
2266    else if (output_encoding == P_LINEAR)  in png_image_read_colormap()
2324                   back_alpha = output_encoding == P_LINEAR ? 65535 : 255;  in png_image_read_colormap()
2411                      if (output_encoding == P_LINEAR)  in png_image_read_colormap()
2419                            back_g, 65535, P_LINEAR);  in png_image_read_colormap()
2440                   back_alpha = output_encoding == P_LINEAR ? 65535 : 255;  in png_image_read_colormap()
2520                if (output_encoding == P_LINEAR)  in png_image_read_colormap()
2526                      back_g, 65535, P_LINEAR);  in png_image_read_colormap()
2565                   output_encoding == P_LINEAR ? 65535U : 255U, output_encoding);  in png_image_read_colormap()
2716                   else if (output_encoding == P_LINEAR)  in png_image_read_colormap()
2723                         back_g, 0/*unused*/, P_LINEAR);  in png_image_read_colormap()
2823                   if (output_encoding == P_LINEAR)  in png_image_read_colormap()
2954                         output_encoding == P_LINEAR ? trans[i] * 257U :  in png_image_read_colormap()