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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/snapscan-usb.h
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/snapscan-usb.h')
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diff --git a/backend/snapscan-usb.h b/backend/snapscan-usb.h
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+/*
+ Snapscan 1212U modifications for the Snapscan SANE backend
+
+ Copyright (C) 2000 Henrik Johansson
+
+ Henrik Johansson (henrikjo@post.urfors.se)
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, the authors of SANE give permission for
+ additional uses of the libraries contained in this release of SANE.
+
+ The exception is that, if you link a SANE library with other files
+ to produce an executable, this does not by itself cause the
+ resulting executable to be covered by the GNU General Public
+ License. Your use of that executable is in no way restricted on
+ account of linking the SANE library code into it.
+
+ This exception does not, however, invalidate any other reasons why
+ the executable file might be covered by the GNU General Public
+ License.
+
+ If you submit changes to SANE to the maintainers to be included in
+ a subsequent release, you agree by submitting the changes that
+ those changes may be distributed with this exception intact.
+
+ If you write modifications of your own for SANE, it is your choice
+ whether to permit this exception to apply to your modifications.
+ If you do not wish that, delete this exception notice.
+
+ This file implements USB equivalents to the SCSI routines used by the Snapscan
+ backend.
+*/
+
+/* $Id$
+ SnapScan backend scan data sources */
+
+#ifndef snapscan_usb_h
+#define snapscan_usb_h
+
+typedef SANE_Status (*sense_handler_type)(int fd, u_char *sense_buffer, void *arg);
+
+static SANE_Status snapscani_usb_cmd(int fd, const void *src, size_t src_size,
+ void *dst, size_t * dst_size);
+static SANE_Status snapscani_usb_open(const char *dev, int *fdp,
+ sense_handler_type, void*);
+static void snapscani_usb_close(int fd);
+
+/*
+ * USB status codes
+ */
+#define GOOD 0x00
+#define CHECK_CONDITION 0x01
+#define CONDITION_GOOD 0x02
+#define BUSY 0x04
+#define INTERMEDIATE_GOOD 0x08
+#define INTERMEDIATE_C_GOOD 0x0a
+#define RESERVATION_CONFLICT 0x0c
+#define COMMAND_TERMINATED 0x11
+#define QUEUE_FULL 0x14
+
+#define STATUS_MASK 0x3e
+
+/*
+ * USB transaction status
+ */
+#define TRANSACTION_COMPLETED 0xfb /* Scanner considers the transaction done */
+#define TRANSACTION_READ 0xf9 /* Scanner has data to deliver */
+#define TRANSACTION_WRITE 0xf8 /* Scanner is expecting more data */
+
+/*
+ * Busy queue data structure and prototypes
+ */
+struct usb_busy_queue {
+ int fd;
+ void *src;
+ size_t src_size;
+ struct usb_busy_queue *next;
+};
+
+static struct usb_busy_queue *bqhead,*bqtail;
+static int enqueue_bq(int fd,const void *src, size_t src_size);
+static void dequeue_bq(void);
+static int is_queueable(const char *src);
+
+static SANE_Status atomic_usb_cmd(int fd, const void *src, size_t src_size,
+ void *dst, size_t * dst_size);
+static SANE_Status usb_cmd(int fd, const void *src, size_t src_size,
+ void *dst, size_t * dst_size);
+
+#endif
+
+/*
+ * $Log$
+ * Revision 1.6 2003/07/26 17:16:55 oliverschwartz
+ * Changed licence to GPL + SANE exception for snapscan-usb.[ch]
+ *
+ * Revision 1.5 2002/04/10 21:45:53 oliverschwartz
+ * Removed illegal character / removed declaration of bqelements
+ *
+ * Revision 1.10 2001/12/09 23:06:45 oliverschwartz
+ * - use sense handler for USB if scanner reports CHECK_CONDITION
+ *
+ * Revision 1.9 2001/11/16 20:23:16 oliverschwartz
+ * Merge with sane-1.0.6
+ * - Check USB vendor IDs to avoid hanging scanners
+ * - fix bug in dither matrix computation
+ *
+ * Revision 1.8 2001/09/18 15:01:07 oliverschwartz
+ * - Read scanner id string again after firmware upload
+ * to indentify correct model
+ * - Make firmware upload work for AGFA scanners
+ * - Change copyright notice
+ *
+ * */