2814             int sshift, dshift;  in png_do_read_interlace()  local
2825                sshift = (int)((row_info->width + 7) & 7);  in png_do_read_interlace()
2834                sshift = 7 - (int)((row_info->width + 7) & 7);  in png_do_read_interlace()
2843                v = (png_byte)((*sp >> sshift) & 0x1);  in png_do_read_interlace()
2856                if (sshift == s_end)  in png_do_read_interlace()
2858                   sshift = s_start;  in png_do_read_interlace()
2862                   sshift += s_inc;  in png_do_read_interlace()
2870             int sshift, dshift;  in png_do_read_interlace()  local
2879                sshift = (png_size_t)(((row_info->width + 3) & 3) << 1);  in png_do_read_interlace()
2888                sshift = (png_size_t)((3 - ((row_info->width + 3) & 3)) << 1);  in png_do_read_interlace()
2900                v = (png_byte)((*sp >> sshift) & 0x3);  in png_do_read_interlace()
2913                if (sshift == s_end)  in png_do_read_interlace()
2915                   sshift = s_start;  in png_do_read_interlace()
2919                   sshift += s_inc;  in png_do_read_interlace()
2927             int sshift, dshift;  in png_do_read_interlace()  local
2936                sshift = (png_size_t)(((row_info->width + 1) & 1) << 2);  in png_do_read_interlace()
2945                sshift = (png_size_t)((1 - ((row_info->width + 1) & 1)) << 2);  in png_do_read_interlace()
2957                v = (png_byte)((*sp >> sshift) & 0xf);  in png_do_read_interlace()
2970                if (sshift == s_end)  in png_do_read_interlace()
2972                   sshift = s_start;  in png_do_read_interlace()
2976                   sshift += s_inc;  in png_do_read_interlace()
3551             int sshift, dshift;  in png_do_read_interlace()  local
3561                 sshift = (int)((row_info->width + 7) & 0x07);  in png_do_read_interlace()
3570                 sshift = 7 - (int)((row_info->width + 7) & 0x07);  in png_do_read_interlace()
3579                v = (png_byte)((*sp >> sshift) & 0x01);  in png_do_read_interlace()
3592                if (sshift == s_end)  in png_do_read_interlace()
3594                   sshift = s_start;  in png_do_read_interlace()
3598                   sshift += s_inc;  in png_do_read_interlace()
3606             int sshift, dshift;  in png_do_read_interlace()  local
3614                sshift = (int)(((row_info->width + 3) & 0x03) << 1);  in png_do_read_interlace()
3623                sshift = (int)((3 - ((row_info->width + 3) & 0x03)) << 1);  in png_do_read_interlace()
3635                v = (png_byte)((*sp >> sshift) & 0x03);  in png_do_read_interlace()
3648                if (sshift == s_end)  in png_do_read_interlace()
3650                   sshift = s_start;  in png_do_read_interlace()
3654                   sshift += s_inc;  in png_do_read_interlace()
3662             int sshift, dshift;  in png_do_read_interlace()  local
3670                sshift = (int)(((row_info->width + 1) & 0x01) << 2);  in png_do_read_interlace()
3679                sshift = (int)((1 - ((row_info->width + 1) & 0x01)) << 2);  in png_do_read_interlace()
3688                png_byte v = (png_byte)((*sp >> sshift) & 0xf);  in png_do_read_interlace()
3703                if (sshift == s_end)  in png_do_read_interlace()
3705                   sshift = s_start;  in png_do_read_interlace()
3709                   sshift += s_inc;  in png_do_read_interlace()