kopia lustrzana https://gitlab.com/sane-project/backends
122 wiersze
4.1 KiB
C
122 wiersze
4.1 KiB
C
/* sane - Scanner Access Now Easy.
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Copyright (C) 2003 James Perry
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice.
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This file implements the SCSI-over-parallel port protocol used in,
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for example, the Paragon 600 II EP
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*/
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#ifndef mustek_scsi_pp_h
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#define mustek_scsi_pp_h
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static int mustek_scsi_pp_get_time (void);
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/**
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* Open the connection to a Mustek SCSI-over-pp device.
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*
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* @param dev Port address as text.
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* @param fd Information about port address and I/O method. fd is not a file
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* descriptor. The name and type are used for compatibility reasons.
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*
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* @return
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* - SANE_STATUS_GOOD - on success
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* - SANE_STATUS_INVAL - if the port address can't be interpreted
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* - SANE_STATUS_IO_ERROR - if the device file for a port couldn't be accessed
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*/
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static SANE_Status mustek_scsi_pp_open (const char *dev, int *fd);
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/**
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* Close the connection to a Mustek SCSI-over-PP device.
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*
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* @param fd Information about port address and I/O method.
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*
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*/
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static void mustek_scsi_pp_close (int fd);
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/**
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* Exit Mustek SCSI-over-PP.
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*/
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static void mustek_scsi_pp_exit (void);
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/**
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* Find out if the device is ready to accept new commands.
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*
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* @param fd Information about port address and I/O method.
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*
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* @return
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* - SANE_STATUS_GOOD - if the device is ready
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* - SANE_STATUS_DEVICE_BUSY if the device is still busy (try again later)
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*/
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static SANE_Status mustek_scsi_pp_test_ready (int fd);
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/**
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* Send a command to the Mustek SCSI-over-pp device.
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*
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* @param fd Information about port address and I/O method.
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* @param src Data to be sent to the device.
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* @param src_size Size of data to be sent to the device.
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* @param dst Data to be received from the device.
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* @param dst_size Size of data to be received from the device
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*
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* @return
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* - SANE_STATUS_GOOD - on success
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* - SANE_STATUS_IO_ERROR - if an error occurred during the dialog with the
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* device
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*/
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static SANE_Status mustek_scsi_pp_cmd (int fd, const void *src, size_t src_size,
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void *dst, size_t * dst_size);
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/**
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* Read scanned image data.
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*
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* @param fd Information about port address and I/O method.
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* @param planes Bytes per pixel (3 for color, 1 for all other modes)
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* @param buf Buffer for image data.
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* @param lines Number of lines
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* @param bpl Bytes per line
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*
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* @return
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* - SANE_STATUS_GOOD - on success
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* - SANE_STATUS_IO_ERROR - if an error occurred during the dialog with the
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* device
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*/
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static SANE_Status mustek_scsi_pp_rdata (int fd, int planes,
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SANE_Byte * buf, int lines, int bpl);
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#endif /* mustek_scsi_pp_h */
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