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Diffstat (limited to 'src/xsane-rc-io.h')
| -rw-r--r-- | src/xsane-rc-io.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/xsane-rc-io.h b/src/xsane-rc-io.h new file mode 100644 index 0000000..14c2443 --- /dev/null +++ b/src/xsane-rc-io.h @@ -0,0 +1,124 @@ +/* xsane -- a graphical (X11, gtk) scanner-oriented SANE frontend + + xsane-rc-io.h + + Oliver Rauch <Oliver.Rauch@rauch-domain.de> + Copyright (C) 1998-2002 Oliver Rauch + This file is part of the XSANE 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* ---------------------------------------------------------------------------------------------------------------- */ + +#ifndef xsane_rc_io_h +#define xsane_rc_io_h + +#include <sys/types.h> + +/* ---------------------------------------------------------------------------------------------------------------------- */ + +#define XSANE_EOF -1 + +/* ---------------------------------------------------------------------------------------------------------------- */ + +typedef enum + { + WIRE_ENCODE = 0, + WIRE_DECODE, + WIRE_FREE + } +WireDirection; + +/* ---------------------------------------------------------------------------------------------------------------- */ + +struct Wire; + +/* ---------------------------------------------------------------------------------------------------------------- */ + +typedef void (*WireCodecFunc) (struct Wire *w, void *val_ptr); +typedef ssize_t (*WireReadFunc) (int fd, void * buf, size_t len); +typedef ssize_t (*WireWriteFunc) (int fd, const void * buf, size_t len); + +/* ---------------------------------------------------------------------------------------------------------------- */ + +typedef struct Wire + { + int version; /* protocol version in use */ + WireDirection direction; + int status; + struct + { + WireCodecFunc w_byte; + WireCodecFunc w_char; + WireCodecFunc w_word; + WireCodecFunc w_string; + } + codec; + struct + { + size_t size; + char *curr; + char *start; + char *end; + } + buffer; + struct + { + int fd; + WireReadFunc read; + WireWriteFunc write; + } + io; + } +Wire; + +/* ---------------------------------------------------------------------------------------------------------------- */ + +extern void xsane_rc_io_w_init(Wire *w); +extern void xsane_rc_io_w_exit(Wire *w); +extern void xsane_rc_io_w_space(Wire *w, size_t howmuch); +extern void xsane_rc_io_w_skip_newline(Wire *w); +extern void xsane_rc_io_w_void(Wire *w); +extern void xsane_rc_io_w_byte(Wire *w, SANE_Byte *v); +extern void xsane_rc_io_w_char(Wire *w, SANE_Char *v); +extern void xsane_rc_io_w_word(Wire *w, SANE_Word *v); +extern void xsane_rc_io_w_string(Wire *w, SANE_String *v); +extern void xsane_rc_io_w_status(Wire *w, SANE_Status *v); +extern void xsane_rc_io_w_constraint_type(Wire *w, SANE_Constraint_Type *v); +extern void xsane_rc_io_w_value_type(Wire *w, SANE_Value_Type *v); +extern void xsane_rc_io_w_unit(Wire *w, SANE_Unit *v); +extern void xsane_rc_io_w_action(Wire *w, SANE_Action *v); +extern void xsane_rc_io_w_frame(Wire *w, SANE_Frame *v); +extern void xsane_rc_io_w_range(Wire *w, SANE_Range *v); +extern void xsane_rc_io_w_range_ptr(Wire *w, SANE_Range **v); +extern void xsane_rc_io_w_device(Wire *w, SANE_Device *v); +extern void xsane_rc_io_w_device_ptr(Wire *w, SANE_Device **v); +extern void xsane_rc_io_w_option_descriptor(Wire *w, SANE_Option_Descriptor *v); +extern void xsane_rc_io_w_option_descriptor_ptr(Wire *w, SANE_Option_Descriptor **v); +extern void xsane_rc_io_w_parameters(Wire *w, SANE_Parameters *v); +extern void xsane_rc_io_w_array(Wire *w, SANE_Word *len, void **v, WireCodecFunc w_element, size_t element_size); +extern void xsane_rc_io_w_flush(Wire *w); +extern void xsane_rc_io_w_set_dir(Wire *w, WireDirection dir); +extern void xsane_rc_io_w_call(Wire *w, SANE_Word proc_num, WireCodecFunc w_arg, void *arg, WireCodecFunc w_reply, void *reply); +extern void xsane_rc_io_w_reply(Wire *w, WireCodecFunc w_reply, void *reply); +extern void xsane_rc_io_w_free(Wire *w, WireCodecFunc w_reply, void *reply); + +extern void xsane_rc_pref_string(Wire *w, void *p, long offset); +extern void xsane_rc_pref_double(Wire *w, void *p, long offset); +extern void xsane_rc_pref_int(Wire *w, void *p, long offset); + +/* ---------------------------------------------------------------------------------------------------------------- */ + +#endif /* xsane_rc_io_wire_h */ |