kopia lustrzana https://gitlab.com/sane-project/backends
Big clean up of Video for Linux backend. Removed old unused stuff from qcam
and others including unused options and variables concerning direct port access. Removed wcam license (no "substantial portions of code" are used any more). Removed unuesed headers. Made lots of global variables local. Lots of checks for null pointer dereferences and errors when opening files or using ioctl/mmap. Added option to select grey or color mode. Added support for different channels. Fixed lots of options. Made sure ioctls are only used when necessary. Used vendor == "Noname". Added ??? comments for suspicious code. Lots of minor fixes and cleanup. Added version number: 1.0-2.DEVEL_2_0_BRANCH-1
Henning Geinitz
rodzic
d054ded6c1
commit
8b0a038f61
1062
backend/v4l.c
1062
backend/v4l.c
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118
backend/v4l.h
118
backend/v4l.h
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@ -1,5 +1,7 @@
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/* 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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@ -22,42 +24,13 @@
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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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Portions of this code are derived from Scott Laird's qcam driver.
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It's copyright notice is reproduced here:
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Copyright (C) 1996 by Scott Laird
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use, copy,
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modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL SCOTT LAIRD BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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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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typedef enum
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{
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V4L_MONO = 0x01,
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V4L_COLOR = 0x10
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}
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V4L_Model;
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#define MAX_CHANNELS 32
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typedef enum
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{
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@ -66,52 +39,13 @@ typedef enum
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}
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V4L_Resolution;
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/* commands common to all quick-cameras: */
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typedef enum
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{
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V4L_SEND_VIDEO_FRAME = 7,
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V4L_SET_BRIGHTNESS = 11,
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V4L_SET_TOP = 13,
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V4L_SET_LEFT = 15,
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V4L_SET_NUM_V = 17,
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V4L_SET_NUM_H = 19,
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V4L_SEND_VERSION = 23,
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V4L_SET_BLACK = 29,
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V4L_SET_WHITE = 31,
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V4L_SET_SATURATION = 35,
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V4L_SEND_STATUS = 41,
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V4L_SET_SPEED = 45
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}
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V4L_Command;
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/* commands for grayscale camera: */
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typedef enum
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{
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V4L_MONO_SET_CONTRAST = 25,
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V4L_MONO_AUTO_ADJUST_OFFSET = 27,
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V4L_MONO_GET_OFFSET = 33
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}
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V4L_Mono_Command;
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/* commands for color camera: */
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typedef enum
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{
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V4L_COL_LOAD_RAM = 27,
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V4L_COL_SET_HUE = 33,
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V4L_COL_SET_CONTRAST = 37
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}
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V4L_Col_Command;
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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_DEPTH, /* 4 or 6 (b&w) or 24 (color) */
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OPT_RESOLUTION, /* resolution in pixels */
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OPT_XFER_SCALE, /* transfer-scale */
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OPT_DESPECKLE, /* turn on despeckling? */
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OPT_TEST, /* test image */
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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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@ -121,11 +55,10 @@ typedef enum
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OPT_ENHANCEMENT_GROUP,
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OPT_BRIGHTNESS,
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OPT_CONTRAST,
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OPT_BLACK_LEVEL,
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OPT_WHITE_LEVEL,
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OPT_HUE,
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OPT_SATURATION,
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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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@ -140,30 +73,10 @@ typedef union
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}
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Option_Value;
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typedef enum
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{
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V4L_UNIDIR,
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V4L_BIDIR
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}
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V4L_Port_Mode;
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typedef struct
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{
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size_t num_bytes; /* # of bytes to read */
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V4L_Resolution resolution; /* high-resolution? */
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SANE_Parameters params; /* other parameters */
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u_int mode; /* qcam scan code (get video data command) */
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int despeckle; /* apply despeckling filter? */
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}
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V4L_Scan_Request;
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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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V4L_Port_Mode port_mode;
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int version; /* camera version */
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int lock_fd; /* used for locking protocol */
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}
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V4L_Device;
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@ -178,16 +91,19 @@ typedef struct V4L_Scanner
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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_Int value_changed; /* bitmask of options that were set */
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SANE_Bool scanning;
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SANE_Bool deliver_eof;
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SANE_Bool mmap; /* Do we use mmap ? */
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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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/* internal state for v4l_readbytes(): */
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int readbytes_state;
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unsigned int saved_bits;
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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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@ -10,10 +10,10 @@
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;
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:backend "v4l" ; name of backend
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:version "0.1" ; version of backend
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:version "1.0-2" ; version of backend
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:status :alpha ; :alpha, :beta, :stable, :new
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:manpage "sane-v4l" ; name of manpage (if it exists)
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;:url "http://www.franken.de/users/solid/" ; backend's web page
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:url "mailto:henning@meier-geinitz.de" ; backend's web page
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:devicetype :api ; start of a list of devices....
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; other types: :stillcam, :vidcam,
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@ -21,6 +21,6 @@
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:desc "Interface to Video For Linux API" ; describe a non-hardware device
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:comment "Supports video cameras and other devices accessed by the v4l kernel API, e.g. bttv devices."
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; :comment and :url specifiers are optional after :mfg, :model, :desc,
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; and at the top-level.
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