818          switch (png_ptr->bit_depth)  in png_init_read_transformations()
1035             double m = (double)(((png_uint_32)1 << png_ptr->bit_depth) - 1);  in png_init_read_transformations()
1204          info_ptr->bit_depth = 8;  in png_read_transform_info()
1214          if (info_ptr->bit_depth < 8)  in png_read_transform_info()
1215             info_ptr->bit_depth = 8;  in png_read_transform_info()
1243    if ((png_ptr->transformations & PNG_16_TO_8) && (info_ptr->bit_depth == 16))  in png_read_transform_info()
1244       info_ptr->bit_depth = 8;  in png_read_transform_info()
1262           png_ptr->palette_lookup && info_ptr->bit_depth == 8)  in png_read_transform_info()
1270    if ((png_ptr->transformations & PNG_PACK) && (info_ptr->bit_depth < 8))  in png_read_transform_info()
1271       info_ptr->bit_depth = 8;  in png_read_transform_info()
1308        if (info_ptr->bit_depth < png_ptr->user_transform_depth)  in png_read_transform_info()
1309          info_ptr->bit_depth = png_ptr->user_transform_depth;  in png_read_transform_info()
1316       info_ptr->bit_depth);  in png_read_transform_info()
1561          png_ptr->row_info.bit_depth = png_ptr->user_transform_depth;  in png_do_read_transformations()
1565       png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *  in png_do_read_transformations()
1587    if (row != NULL && row_info != NULL && row_info->bit_depth < 8)  in png_do_unpack()
1589    if (row_info->bit_depth < 8)  in png_do_unpack()
1595       switch (row_info->bit_depth)  in png_do_unpack()
1661       row_info->bit_depth = 8;  in png_do_unpack()
1693          shift[channels++] = row_info->bit_depth - sig_bits->red;  in png_do_unshift()
1694          shift[channels++] = row_info->bit_depth - sig_bits->green;  in png_do_unshift()
1695          shift[channels++] = row_info->bit_depth - sig_bits->blue;  in png_do_unshift()
1699          shift[channels++] = row_info->bit_depth - sig_bits->gray;  in png_do_unshift()
1703          shift[channels++] = row_info->bit_depth - sig_bits->alpha;  in png_do_unshift()
1717       switch (row_info->bit_depth)  in png_do_unshift()
1790    if (row != NULL && row_info != NULL && row_info->bit_depth == 16)  in png_do_chop()
1792    if (row_info->bit_depth == 16)  in png_do_chop()
1834       row_info->bit_depth = 8;  in png_do_chop()
1855          if (row_info->bit_depth == 8)  in png_do_read_swap_alpha()
1897          if (row_info->bit_depth == 8)  in png_do_read_swap_alpha()
1948          if (row_info->bit_depth == 8)  in png_do_read_invert_alpha()
1997          if (row_info->bit_depth == 8)  in png_do_read_invert_alpha()
2053       if (row_info->bit_depth == 8)  in png_do_read_filler()
2085       else if (row_info->bit_depth == 16)  in png_do_read_filler()
2125       if (row_info->bit_depth == 8)  in png_do_read_filler()
2161       else if (row_info->bit_depth == 16)  in png_do_read_filler()
2220    if (row_info->bit_depth >= 8 &&  in png_do_gray_to_rgb()
2228          if (row_info->bit_depth == 8)  in png_do_gray_to_rgb()
2256          if (row_info->bit_depth == 8)  in png_do_gray_to_rgb()
2288          row_info->bit_depth);  in png_do_gray_to_rgb()
2339          if (row_info->bit_depth == 8)  in png_do_rgb_to_gray()
2445          if (row_info->bit_depth == 8)  in png_do_rgb_to_gray()
2546          row_info->bit_depth);  in png_do_rgb_to_gray()
2559 png_build_grayscale_palette(int bit_depth, png_colorp palette)  in png_build_grayscale_palette()  argument
2571    switch (bit_depth)  in png_build_grayscale_palette()
2826             switch (row_info->bit_depth)  in png_do_background()
3047             if (row_info->bit_depth == 8)  in png_do_background()
3152             if (row_info->bit_depth == 8)  in png_do_background()
3295             if (row_info->bit_depth == 8)  in png_do_background()
3480             row_info->bit_depth);  in png_do_background()
3509        ((row_info->bit_depth <= 8 && gamma_table != NULL) ||  in png_do_gamma()
3510         (row_info->bit_depth == 16 && gamma_16_table != NULL)))  in png_do_gamma()
3516             if (row_info->bit_depth == 8)  in png_do_gamma()
3555             if (row_info->bit_depth == 8)  in png_do_gamma()
3593             if (row_info->bit_depth == 8)  in png_do_gamma()
3618             if (row_info->bit_depth == 2)  in png_do_gamma()
3637             if (row_info->bit_depth == 4)  in png_do_gamma()
3651             else if (row_info->bit_depth == 8)  in png_do_gamma()
3661             else if (row_info->bit_depth == 16)  in png_do_gamma()
3700       if (row_info->bit_depth < 8)  in png_do_expand_palette()
3702          switch (row_info->bit_depth)  in png_do_expand_palette()
3772          row_info->bit_depth = 8;  in png_do_expand_palette()
3776       switch (row_info->bit_depth)  in png_do_expand_palette()
3796                row_info->bit_depth = 8;  in png_do_expand_palette()
3815                row_info->bit_depth = 8;  in png_do_expand_palette()
3849          if (row_info->bit_depth < 8)  in png_do_expand()
3851             switch (row_info->bit_depth)  in png_do_expand()
3926             row_info->bit_depth = 8;  in png_do_expand()
3933             if (row_info->bit_depth == 8)  in png_do_expand()
3948             else if (row_info->bit_depth == 16)  in png_do_expand()
3973             row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);  in png_do_expand()
3980          if (row_info->bit_depth == 8)  in png_do_expand()
3998          else if (row_info->bit_depth == 16)  in png_do_expand()
4035          row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);  in png_do_expand()
4058          palette_lookup && row_info->bit_depth == 8)  in png_do_dither()
4089          row_info->pixel_depth = row_info->bit_depth;  in png_do_dither()
4093          palette_lookup != NULL && row_info->bit_depth == 8)  in png_do_dither()
4118          row_info->pixel_depth = row_info->bit_depth;  in png_do_dither()
4122          dither_lookup && row_info->bit_depth == 8)  in png_do_dither()
4177   if (png_ptr->bit_depth <= 8)  in png_build_gamma_table()
4407       if (row_info->bit_depth == 8)  in png_do_read_intrapixel()
4427       else if (row_info->bit_depth == 16)  in png_do_read_intrapixel()