1 /* 2 * Prototypes for epson2 I/O functions 3 * 4 * Based on Kazuhiro Sasayama previous 5 * Work on epson.[ch] file from the SANE package. 6 * Please see those files for original copyrights. 7 * 8 * Copyright (C) 2006 Tower Technologies 9 * Author: Alessandro Zummo <a.zummo@towertech.it> 10 * 11 * This file is part of the SANE package. 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation, version 2. 16 */ 17 18 #ifndef epson2_io_h 19 #define epson2_io_h 20 21 extern unsigned int r_cmd_count; 22 extern unsigned int w_cmd_count; 23 24 25 SANE_Status e2_cmd_simple(Epson_Scanner * s, void *buf, size_t buf_size); 26 int e2_send(Epson_Scanner * s, void *buf, size_t buf_size, 27 size_t reply_len, SANE_Status * status); 28 ssize_t e2_recv(Epson_Scanner * s, void *buf, ssize_t buf_size, 29 SANE_Status * status); 30 31 SANE_Status 32 e2_txrx(Epson_Scanner * s, unsigned char *txbuf, size_t txlen, 33 unsigned char *rxbuf, size_t rxlen); 34 35 SANE_Status 36 e2_recv_info_block(Epson_Scanner * s, unsigned char *scanner_status, 37 size_t info_size, size_t * payload_size); 38 39 SANE_Status 40 e2_cmd_info_block(SANE_Handle handle, unsigned char *params, 41 unsigned char params_len, size_t reply_len, 42 unsigned char **buf, size_t * buf_len); 43 44 SANE_Status e2_ack(Epson_Scanner * s); 45 SANE_Status e2_ack_next(Epson_Scanner * s, size_t reply_len); 46 SANE_Status e2_cancel(Epson_Scanner * s); 47 48 SANE_Status 49 e2_esc_cmd(Epson_Scanner * s, unsigned char cmd, unsigned char val); 50 #endif /* epson2_io_h */ 51