Initial import of sane-backends version 1.0.24-1.2

1 files changed, 128 insertions, 0 deletions

diff --git a/backend/snapscan-usb.h b/backend/snapscan-usb.h
new file mode 100644
index 0000000..c222d3f
--- /dev/null
+++ b/backend/snapscan-usb.h
@@ -0,0 +1,128 @@
+/*
+  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
+ *
+ * */