summaryrefslogtreecommitdiff
path: root/backend/v4l.h
diff options
context:
space:
mode:
authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/v4l.h
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/v4l.h')
-rw-r--r--backend/v4l.h242
1 files changed, 242 insertions, 0 deletions
diff --git a/backend/v4l.h b/backend/v4l.h
new file mode 100644
index 0000000..6aee586
--- /dev/null
+++ b/backend/v4l.h
@@ -0,0 +1,242 @@
+/* sane - Scanner Access Now Easy.
+ Copyright (C) 1997 David Mosberger-Tang
+ Updates and bugfixes (C) 2002. 2003 Henning Meier-Geinitz
+
+ This file is part of the SANE package.
+
+ 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 v4l_h
+#define v4l_h
+
+#ifndef __LINUX_VIDEODEV_H
+/* Kernel interface */
+/* Only the stuff we need. For more features, more defines are needed */
+
+#define VID_TYPE_CAPTURE 1 /* Can capture */
+#define VID_TYPE_TUNER 2 /* Can tune */
+#define VID_TYPE_TELETEXT 4 /* Does teletext */
+#define VID_TYPE_OVERLAY 8 /* Overlay onto frame buffer */
+#define VID_TYPE_CHROMAKEY 16 /* Overlay by chromakey */
+#define VID_TYPE_CLIPPING 32 /* Can clip */
+#define VID_TYPE_FRAMERAM 64 /* Uses the frame buffer memory */
+#define VID_TYPE_SCALES 128 /* Scalable */
+#define VID_TYPE_MONOCHROME 256 /* Monochrome only */
+#define VID_TYPE_SUBCAPTURE 512 /* Can capture subareas of the image */
+#define VID_TYPE_MPEG_DECODER 1024 /* Can decode MPEG streams */
+#define VID_TYPE_MPEG_ENCODER 2048 /* Can encode MPEG streams */
+#define VID_TYPE_MJPEG_DECODER 4096 /* Can decode MJPEG streams */
+#define VID_TYPE_MJPEG_ENCODER 8192 /* Can encode MJPEG streams */
+
+struct video_capability
+{
+ char name[32];
+ int type;
+ int channels; /* Num channels */
+ int audios; /* Num audio devices */
+ int maxwidth; /* Supported width */
+ int maxheight; /* And height */
+ int minwidth; /* Supported width */
+ int minheight; /* And height */
+};
+
+struct video_picture
+{
+ __u16 brightness;
+ __u16 hue;
+ __u16 colour;
+ __u16 contrast;
+ __u16 whiteness; /* Black and white only */
+ __u16 depth; /* Capture depth */
+ __u16 palette; /* Palette in use */
+#define VIDEO_PALETTE_GREY 1 /* Linear greyscale */
+#define VIDEO_PALETTE_HI240 2 /* High 240 cube (BT848) */
+#define VIDEO_PALETTE_RGB565 3 /* 565 16 bit RGB */
+#define VIDEO_PALETTE_RGB24 4 /* 24bit RGB */
+#define VIDEO_PALETTE_RGB32 5 /* 32bit RGB */
+#define VIDEO_PALETTE_RGB555 6 /* 555 15bit RGB */
+#define VIDEO_PALETTE_YUV422 7 /* YUV422 capture */
+#define VIDEO_PALETTE_YUYV 8
+#define VIDEO_PALETTE_UYVY 9 /* The great thing about standards is ... */
+#define VIDEO_PALETTE_YUV420 10
+#define VIDEO_PALETTE_YUV411 11 /* YUV411 capture */
+#define VIDEO_PALETTE_RAW 12 /* RAW capture (BT848) */
+#define VIDEO_PALETTE_YUV422P 13 /* YUV 4:2:2 Planar */
+#define VIDEO_PALETTE_YUV411P 14 /* YUV 4:1:1 Planar */
+#define VIDEO_PALETTE_YUV420P 15 /* YUV 4:2:0 Planar */
+#define VIDEO_PALETTE_YUV410P 16 /* YUV 4:1:0 Planar */
+#define VIDEO_PALETTE_PLANAR 13 /* start of planar entries */
+#define VIDEO_PALETTE_COMPONENT 7 /* start of component entries */
+};
+
+struct video_window
+{
+ __u32 x,y; /* Position of window */
+ __u32 width,height; /* Its size */
+ __u32 chromakey;
+ __u32 flags;
+ struct video_clip *clips; /* Set only */
+ int clipcount;
+#define VIDEO_WINDOW_INTERLACE 1
+#define VIDEO_WINDOW_CHROMAKEY 16 /* Overlay by chromakey */
+#define VIDEO_CLIP_BITMAP -1
+/* bitmap is 1024x625, a '1' bit represents a clipped pixel */
+#define VIDEO_CLIPMAP_SIZE (128 * 625)
+};
+
+#define VIDEO_MAX_FRAME 32
+
+struct video_mbuf
+{
+ int size; /* Total memory to map */
+ int frames; /* Frames */
+ int offsets[VIDEO_MAX_FRAME];
+};
+
+struct video_mmap
+{
+ unsigned int frame; /* Frame (0 - n) for double buffer */
+ int height,width;
+ unsigned int format; /* should be VIDEO_PALETTE_* */
+};
+
+struct video_channel
+{
+ int channel;
+ char name[32];
+ int tuners;
+ __u32 flags;
+#define VIDEO_VC_TUNER 1 /* Channel has a tuner */
+#define VIDEO_VC_AUDIO 2 /* Channel has audio */
+ __u16 type;
+#define VIDEO_TYPE_TV 1
+#define VIDEO_TYPE_CAMERA 2
+ __u16 norm; /* Norm set by channel */
+};
+
+#define VIDIOCGCAP _IOR('v',1,struct video_capability) /* Get capabilities */
+#define VIDIOCGCHAN _IOWR('v',2,struct video_channel) /* Get channel info (sources) */
+#define VIDIOCSCHAN _IOW('v',3,struct video_channel) /* Set channel */
+#define VIDIOCGTUNER _IOWR('v',4,struct video_tuner) /* Get tuner abilities */
+#define VIDIOCSTUNER _IOW('v',5,struct video_tuner) /* Tune the tuner for the current channel */
+#define VIDIOCGPICT _IOR('v',6,struct video_picture) /* Get picture properties */
+#define VIDIOCSPICT _IOW('v',7,struct video_picture) /* Set picture properties */
+#define VIDIOCCAPTURE _IOW('v',8,int) /* Start, end capture */
+#define VIDIOCGWIN _IOR('v',9, struct video_window) /* Get the video overlay window */
+#define VIDIOCSWIN _IOW('v',10, struct video_window) /* Set the video overlay window - passes clip list for hardware smarts , chromakey etc */
+#define VIDIOCGFBUF _IOR('v',11, struct video_buffer) /* Get frame buffer */
+#define VIDIOCSFBUF _IOW('v',12, struct video_buffer) /* Set frame buffer - root only */
+#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) */
+#define VIDIOCGFREQ _IOR('v',14, unsigned long) /* Set tuner */
+#define VIDIOCSFREQ _IOW('v',15, unsigned long) /* Set tuner */
+#define VIDIOCGAUDIO _IOR('v',16, struct video_audio) /* Get audio info */
+#define VIDIOCSAUDIO _IOW('v',17, struct video_audio) /* Audio source, mute etc */
+#define VIDIOCSYNC _IOW('v',18, int) /* Sync with mmap grabbing */
+#define VIDIOCMCAPTURE _IOW('v',19, struct video_mmap) /* Grab frames */
+#define VIDIOCGMBUF _IOR('v',20, struct video_mbuf) /* Memory map buffer info */
+#define VIDIOCGUNIT _IOR('v',21, struct video_unit) /* Get attached units */
+#define VIDIOCGCAPTURE _IOR('v',22, struct video_capture) /* Get subcapture */
+#define VIDIOCSCAPTURE _IOW('v',23, struct video_capture) /* Set subcapture */
+#define VIDIOCSPLAYMODE _IOW('v',24, struct video_play_mode) /* Set output video mode/feature */
+#define VIDIOCSWRITEMODE _IOW('v',25, int) /* Set write mode */
+#define VIDIOCGPLAYINFO _IOR('v',26, struct video_info) /* Get current playback info from hardware */
+#define VIDIOCSMICROCODE _IOW('v',27, struct video_code) /* Load microcode into hardware */
+#define VIDIOCGVBIFMT _IOR('v',28, struct vbi_format) /* Get VBI information */
+#define VIDIOCSVBIFMT _IOW('v',29, struct vbi_format) /* Set VBI information */
+
+
+/* end of kernel interface */
+#endif /* !__LINUX_VIDEODEV_H */
+
+#include <../include/sane/sane.h>
+
+#define MAX_CHANNELS 32
+
+typedef enum
+{
+ V4L_RES_LOW = 0,
+ V4L_RES_HIGH
+}
+V4L_Resolution;
+
+typedef enum
+{
+ OPT_NUM_OPTS = 0,
+
+ OPT_MODE_GROUP,
+ OPT_MODE,
+ OPT_CHANNEL,
+
+ OPT_GEOMETRY_GROUP,
+ OPT_TL_X, /* top-left x */
+ OPT_TL_Y, /* top-left y */
+ OPT_BR_X, /* bottom-right x */
+ OPT_BR_Y, /* bottom-right y */
+
+ OPT_ENHANCEMENT_GROUP,
+ OPT_BRIGHTNESS,
+ OPT_HUE,
+ OPT_COLOR,
+ OPT_CONTRAST,
+ OPT_WHITE_LEVEL,
+
+ /* must come last: */
+ NUM_OPTIONS
+}
+V4L_Option;
+
+typedef struct V4L_Device
+{
+ struct V4L_Device *next;
+ SANE_Device sane;
+}
+V4L_Device;
+
+typedef struct V4L_Scanner
+{
+ struct V4L_Scanner *next;
+
+ SANE_Option_Descriptor opt[NUM_OPTIONS];
+ Option_Value val[NUM_OPTIONS];
+ V4L_Resolution resolution;
+ SANE_Parameters params;
+ SANE_String_Const devicename; /* Name of the Device */
+ int fd; /* Filedescriptor */
+ SANE_Int user_corner; /* bitmask of user-selected coordinates */
+ SANE_Bool scanning;
+ SANE_Bool deliver_eof;
+ SANE_Bool is_mmap; /* Do we use mmap ? */
+ /* state for reading a frame: */
+ size_t num_bytes; /* # of bytes read so far */
+ size_t bytes_per_frame; /* total number of bytes in frame */
+ struct video_capability capability;
+ struct video_picture pict;
+ struct video_window window;
+ struct video_mbuf mbuf;
+ struct video_mmap mmap;
+ SANE_String_Const channel[MAX_CHANNELS];
+ SANE_Int buffercount;
+}
+V4L_Scanner;
+
+#endif /* v4l_h */