kopia lustrzana https://gitlab.com/sane-project/backends
243 wiersze
8.4 KiB
C
243 wiersze
8.4 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. 2003 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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#ifndef __LINUX_VIDEODEV_H
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/* Kernel interface */
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/* Only the stuff we need. For more features, more defines are needed */
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#define VID_TYPE_CAPTURE 1 /* Can capture */
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#define VID_TYPE_TUNER 2 /* Can tune */
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#define VID_TYPE_TELETEXT 4 /* Does teletext */
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#define VID_TYPE_OVERLAY 8 /* Overlay onto frame buffer */
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#define VID_TYPE_CHROMAKEY 16 /* Overlay by chromakey */
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#define VID_TYPE_CLIPPING 32 /* Can clip */
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#define VID_TYPE_FRAMERAM 64 /* Uses the frame buffer memory */
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#define VID_TYPE_SCALES 128 /* Scalable */
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#define VID_TYPE_MONOCHROME 256 /* Monochrome only */
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#define VID_TYPE_SUBCAPTURE 512 /* Can capture subareas of the image */
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#define VID_TYPE_MPEG_DECODER 1024 /* Can decode MPEG streams */
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#define VID_TYPE_MPEG_ENCODER 2048 /* Can encode MPEG streams */
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#define VID_TYPE_MJPEG_DECODER 4096 /* Can decode MJPEG streams */
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#define VID_TYPE_MJPEG_ENCODER 8192 /* Can encode MJPEG streams */
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struct video_capability
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{
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char name[32];
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int type;
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int channels; /* Num channels */
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int audios; /* Num audio devices */
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int maxwidth; /* Supported width */
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int maxheight; /* And height */
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int minwidth; /* Supported width */
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int minheight; /* And height */
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};
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struct video_picture
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{
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__u16 brightness;
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__u16 hue;
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__u16 colour;
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__u16 contrast;
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__u16 whiteness; /* Black and white only */
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__u16 depth; /* Capture depth */
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__u16 palette; /* Palette in use */
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#define VIDEO_PALETTE_GREY 1 /* Linear greyscale */
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#define VIDEO_PALETTE_HI240 2 /* High 240 cube (BT848) */
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#define VIDEO_PALETTE_RGB565 3 /* 565 16 bit RGB */
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#define VIDEO_PALETTE_RGB24 4 /* 24bit RGB */
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#define VIDEO_PALETTE_RGB32 5 /* 32bit RGB */
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#define VIDEO_PALETTE_RGB555 6 /* 555 15bit RGB */
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#define VIDEO_PALETTE_YUV422 7 /* YUV422 capture */
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#define VIDEO_PALETTE_YUYV 8
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#define VIDEO_PALETTE_UYVY 9 /* The great thing about standards is ... */
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#define VIDEO_PALETTE_YUV420 10
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#define VIDEO_PALETTE_YUV411 11 /* YUV411 capture */
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#define VIDEO_PALETTE_RAW 12 /* RAW capture (BT848) */
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#define VIDEO_PALETTE_YUV422P 13 /* YUV 4:2:2 Planar */
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#define VIDEO_PALETTE_YUV411P 14 /* YUV 4:1:1 Planar */
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#define VIDEO_PALETTE_YUV420P 15 /* YUV 4:2:0 Planar */
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#define VIDEO_PALETTE_YUV410P 16 /* YUV 4:1:0 Planar */
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#define VIDEO_PALETTE_PLANAR 13 /* start of planar entries */
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#define VIDEO_PALETTE_COMPONENT 7 /* start of component entries */
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};
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struct video_window
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{
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__u32 x,y; /* Position of window */
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__u32 width,height; /* Its size */
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__u32 chromakey;
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__u32 flags;
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struct video_clip *clips; /* Set only */
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int clipcount;
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#define VIDEO_WINDOW_INTERLACE 1
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#define VIDEO_WINDOW_CHROMAKEY 16 /* Overlay by chromakey */
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#define VIDEO_CLIP_BITMAP -1
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/* bitmap is 1024x625, a '1' bit represents a clipped pixel */
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#define VIDEO_CLIPMAP_SIZE (128 * 625)
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};
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#define VIDEO_MAX_FRAME 32
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struct video_mbuf
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{
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int size; /* Total memory to map */
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int frames; /* Frames */
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int offsets[VIDEO_MAX_FRAME];
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};
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struct video_mmap
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{
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unsigned int frame; /* Frame (0 - n) for double buffer */
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int height,width;
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unsigned int format; /* should be VIDEO_PALETTE_* */
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};
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struct video_channel
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{
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int channel;
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char name[32];
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int tuners;
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__u32 flags;
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#define VIDEO_VC_TUNER 1 /* Channel has a tuner */
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#define VIDEO_VC_AUDIO 2 /* Channel has audio */
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__u16 type;
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#define VIDEO_TYPE_TV 1
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#define VIDEO_TYPE_CAMERA 2
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__u16 norm; /* Norm set by channel */
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};
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#define VIDIOCGCAP _IOR('v',1,struct video_capability) /* Get capabilities */
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#define VIDIOCGCHAN _IOWR('v',2,struct video_channel) /* Get channel info (sources) */
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#define VIDIOCSCHAN _IOW('v',3,struct video_channel) /* Set channel */
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#define VIDIOCGTUNER _IOWR('v',4,struct video_tuner) /* Get tuner abilities */
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#define VIDIOCSTUNER _IOW('v',5,struct video_tuner) /* Tune the tuner for the current channel */
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#define VIDIOCGPICT _IOR('v',6,struct video_picture) /* Get picture properties */
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#define VIDIOCSPICT _IOW('v',7,struct video_picture) /* Set picture properties */
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#define VIDIOCCAPTURE _IOW('v',8,int) /* Start, end capture */
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#define VIDIOCGWIN _IOR('v',9, struct video_window) /* Get the video overlay window */
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#define VIDIOCSWIN _IOW('v',10, struct video_window) /* Set the video overlay window - passes clip list for hardware smarts , chromakey etc */
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#define VIDIOCGFBUF _IOR('v',11, struct video_buffer) /* Get frame buffer */
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#define VIDIOCSFBUF _IOW('v',12, struct video_buffer) /* Set frame buffer - root only */
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#define VIDIOCKEY _IOR('v',13, struct video_key) /* Video key event - to dev 255 is to all - cuts capture on all DMA windows with this key (0xFFFFFFFF == all) */
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#define VIDIOCGFREQ _IOR('v',14, unsigned long) /* Set tuner */
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#define VIDIOCSFREQ _IOW('v',15, unsigned long) /* Set tuner */
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#define VIDIOCGAUDIO _IOR('v',16, struct video_audio) /* Get audio info */
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#define VIDIOCSAUDIO _IOW('v',17, struct video_audio) /* Audio source, mute etc */
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#define VIDIOCSYNC _IOW('v',18, int) /* Sync with mmap grabbing */
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#define VIDIOCMCAPTURE _IOW('v',19, struct video_mmap) /* Grab frames */
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#define VIDIOCGMBUF _IOR('v',20, struct video_mbuf) /* Memory map buffer info */
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#define VIDIOCGUNIT _IOR('v',21, struct video_unit) /* Get attached units */
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#define VIDIOCGCAPTURE _IOR('v',22, struct video_capture) /* Get subcapture */
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#define VIDIOCSCAPTURE _IOW('v',23, struct video_capture) /* Set subcapture */
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#define VIDIOCSPLAYMODE _IOW('v',24, struct video_play_mode) /* Set output video mode/feature */
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#define VIDIOCSWRITEMODE _IOW('v',25, int) /* Set write mode */
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#define VIDIOCGPLAYINFO _IOR('v',26, struct video_info) /* Get current playback info from hardware */
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#define VIDIOCSMICROCODE _IOW('v',27, struct video_code) /* Load microcode into hardware */
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#define VIDIOCGVBIFMT _IOR('v',28, struct vbi_format) /* Get VBI information */
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#define VIDIOCSVBIFMT _IOW('v',29, struct vbi_format) /* Set VBI information */
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/* end of kernel interface */
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#endif /* !__LINUX_VIDEODEV_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 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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