kopia lustrzana https://gitlab.com/sane-project/backends
111 wiersze
2.7 KiB
C
111 wiersze
2.7 KiB
C
/* sane - Scanner Access Now Easy.
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Copyright (C) 1997 David Mosberger-Tang
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Updates and bugfixes (C) 2002 Henning Meier-Geinitz
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This file is part of the SANE package.
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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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*/
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#ifndef v4l_h
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#define v4l_h
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#include <../include/sane/sane.h>
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#define MAX_CHANNELS 32
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typedef enum
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{
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V4L_RES_LOW = 0,
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V4L_RES_HIGH
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}
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V4L_Resolution;
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typedef enum
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{
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OPT_NUM_OPTS = 0,
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OPT_MODE_GROUP,
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OPT_MODE,
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OPT_CHANNEL,
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OPT_GEOMETRY_GROUP,
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OPT_TL_X, /* top-left x */
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OPT_TL_Y, /* top-left y */
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OPT_BR_X, /* bottom-right x */
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OPT_BR_Y, /* bottom-right y */
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OPT_ENHANCEMENT_GROUP,
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OPT_BRIGHTNESS,
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OPT_HUE,
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OPT_COLOR,
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OPT_CONTRAST,
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OPT_WHITE_LEVEL,
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/* must come last: */
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NUM_OPTIONS
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}
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V4L_Option;
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typedef union
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{
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SANE_Word w;
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SANE_Word *wa; /* word array */
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SANE_String s;
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}
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Option_Value;
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typedef struct V4L_Device
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{
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struct V4L_Device *next;
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SANE_Device sane;
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}
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V4L_Device;
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typedef struct V4L_Scanner
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{
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struct V4L_Scanner *next;
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SANE_Option_Descriptor opt[NUM_OPTIONS];
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Option_Value val[NUM_OPTIONS];
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V4L_Resolution resolution;
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SANE_Parameters params;
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SANE_String_Const devicename; /* Name of the Device */
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int fd; /* Filedescriptor */
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SANE_Int user_corner; /* bitmask of user-selected coordinates */
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SANE_Bool scanning;
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SANE_Bool deliver_eof;
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SANE_Bool is_mmap; /* Do we use mmap ? */
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/* state for reading a frame: */
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size_t num_bytes; /* # of bytes read so far */
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size_t bytes_per_frame; /* total number of bytes in frame */
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struct video_capability capability;
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struct video_picture pict;
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struct video_window window;
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struct video_mbuf mbuf;
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struct video_mmap mmap;
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SANE_String_Const channel[MAX_CHANNELS];
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SANE_Int buffercount;
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}
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V4L_Scanner;
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#endif /* v4l_h */
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