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Diffstat (limited to 'backend/pixma_common.h')
| -rw-r--r-- | backend/pixma_common.h | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/backend/pixma_common.h b/backend/pixma_common.h new file mode 100644 index 0000000..86d459f --- /dev/null +++ b/backend/pixma_common.h @@ -0,0 +1,231 @@ +/* SANE - Scanner Access Now Easy. + + Copyright (C) 2006-2007 Wittawat Yamwong <wittawat@web.de> + Copyright (C) 2011-2013 Rolf Bensch <rolf at bensch hyphen online dot de> + + This file is part of the SANE package. + + 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. + */ +#ifndef PIXMA_COMMON_H +#define PIXMA_COMMON_H + + +#include <time.h> /* time_t */ +#include "pixma.h" + + +/*! \defgroup subdriver Subdriver Interface + * \brief Subdriver interface. */ + +/*! \defgroup debug Debug utilities + * \brief Debug utilities. */ + +#ifdef NDEBUG +# define PDBG(x) do {} while(0) +# define PASSERT(x) do {} while(0) +#else +# define PDBG(x) x +# define PASSERT(x) do { \ + if (!(x)) \ + pixma_dbg(1, "ASSERT failed:%s:%d: " \ + #x "\n", __FILE__, __LINE__); \ + } while(0) +#endif + + +#define PIXMA_STATUS_OK 0x0606 +#define PIXMA_STATUS_FAILED 0x1515 +#define PIXMA_STATUS_BUSY 0x1414 + +#define PIXMA_MAX_ID_LEN 30 + +/* These may have been defined elsewhere */ +#ifndef MIN +#define MIN(x,y) (((x) < (y)) ? (x):(y)) +#endif +#ifndef MAX +#define MAX(x,y) (((x) < (y)) ? (y):(x)) +#endif +#define ALIGN_SUP(x,n) (((x) + (n) - 1) / (n) * (n)) +#define ALIGN_INF(x,n) (((x) / (n)) * (n)) + +struct pixma_io_t; + +struct pixma_limits_t +{ + unsigned xdpi, ydpi; + unsigned width, height; +}; + +struct pixma_cmdbuf_t +{ + unsigned cmd_header_len, res_header_len, cmd_len_field_ofs; + unsigned expected_reslen, cmdlen; + int reslen; + unsigned size; + uint8_t *buf; +}; + +struct pixma_imagebuf_t +{ + uint8_t *wptr, *wend; + const uint8_t *rptr, *rend; +}; + +struct pixma_t +{ + pixma_t *next; + struct pixma_io_t *io; + const pixma_scan_ops_t *ops; + pixma_scan_param_t *param; + const pixma_config_t *cfg; + char id[PIXMA_MAX_ID_LEN + 1]; + int cancel; /* NOTE: It can be set in a signal handler. */ + uint32_t events; + void *subdriver; /* can be used by model driver. */ + + /* private */ + uint64_t cur_image_size; + pixma_imagebuf_t imagebuf; + unsigned scanning:1; + unsigned underrun:1; +}; + +/** \addtogroup subdriver + * @{ */ +/** Scan operations for subdriver. */ +struct pixma_scan_ops_t +{ + /** Allocate a data structure for the subdriver. It is called after the + * core driver connected to the scanner. The subdriver should reset the + * scanner to a known state in this function. */ + int (*open) (pixma_t *); + + /** Free resources allocated by the subdriver. Don't forget to send abort + * command to the scanner if it is scanning. */ + void (*close) (pixma_t *); + + /** Setup the scanner for scan parameters defined in \a s->param. */ + int (*scan) (pixma_t * s); + + /** Fill a buffer with image data. The subdriver has two choices: + * -# Fill the buffer pointed by ib->wptr directly and leave + * ib->rptr and ib->rend untouched. The length of the buffer is + * ib->wend - ib->wptr. It must update ib->wptr accordingly. + * -# Update ib->rptr and ib->rend to point to the the beginning and + * the end of the internal buffer resp. The length of the buffer + * is ib->rend - ib->rptr. This function is called again if + * and only if pixma_read_image() has copied the whole buffer. + * + * The subdriver must wait until there is at least one byte to read or + * return 0 for the end of image. */ + int (*fill_buffer) (pixma_t *, pixma_imagebuf_t * ib); + + /** Cancel the scan operation if necessary and free resources allocated in + * scan(). */ + void (*finish_scan) (pixma_t *); + + /** [Optional] Wait for a user's event, e.g. button event. \a timeout is + * in milliseconds. If an event occured before it's timed out, flags in + * \a s->events should be set accordingly. + * \see PIXMA_EV_* */ + void (*wait_event) (pixma_t * s, int timeout); + + /** Check the scan parameters. The parameters can be adjusted if they are + * out of range, e.g. width > max_width. */ + int (*check_param) (pixma_t *, pixma_scan_param_t *); + + /** Read the device status. \see pixma_get_device_status() */ + int (*get_status) (pixma_t *, pixma_device_status_t *); +}; + + +/** \name Funtions for read and write big-endian integer values */ +/**@{*/ +void pixma_set_be16 (uint16_t x, uint8_t * buf); +void pixma_set_be32 (uint32_t x, uint8_t * buf); +uint16_t pixma_get_be16 (const uint8_t * buf); +uint32_t pixma_get_be32 (const uint8_t * buf); +/**@}*/ + +/** \name Utility functions */ +/**@{*/ +uint8_t pixma_sum_bytes (const void *data, unsigned len); +int pixma_check_dpi (unsigned dpi, unsigned max); +void pixma_sleep (unsigned long usec); +void pixma_get_time (time_t * sec, uint32_t * usec); +uint8_t * pixma_r_to_ir (uint8_t * gptr, uint8_t * sptr, unsigned w, unsigned c); +uint8_t * pixma_rgb_to_gray (uint8_t * gptr, uint8_t * sptr, unsigned w, unsigned c); +uint8_t * pixma_binarize_line(pixma_scan_param_t *, uint8_t * dst, uint8_t * src, unsigned width, unsigned c); +/**@}*/ + +/** \name Command related functions */ +/**@{*/ +int pixma_cmd_transaction (pixma_t *, const void *cmd, unsigned cmdlen, + void *data, unsigned expected_len); +int pixma_check_result (pixma_cmdbuf_t *); +uint8_t *pixma_newcmd (pixma_cmdbuf_t *, unsigned cmd, + unsigned dataout, unsigned datain); +int pixma_exec (pixma_t *, pixma_cmdbuf_t *); +int pixma_exec_short_cmd (pixma_t *, pixma_cmdbuf_t *, unsigned cmd); +int pixma_map_status_errno (unsigned status); +/**@}*/ + +#define pixma_fill_checksum(start, end) do { \ + *(end) = -pixma_sum_bytes(start, (end)-(start)); \ +} while(0) + +/** @} end of group subdriver */ + +/** \addtogroup debug + * @{ */ +void pixma_set_debug_level (int level); +#ifndef NDEBUG +void pixma_hexdump (int level, const void *d_, unsigned len); + +/* len: length of data or error code. + size: if >= 0, force to print 'size' bytes. + max: maximum number of bytes to print(-1 means no limit). */ +void pixma_dump (int level, const char *type, const void *data, int len, + int size, int max); +# define DEBUG_DECLARE_ONLY +# include "../include/sane/sanei_debug.h" +#endif /* NDEBUG */ +/** @} end of group debug */ + +#endif |