Hi Linus, This patch adds the v4l2 API to the linux kernel. The first, original video4linux API has a number of design bugs. They are fixed in this new API revision. It already exists for quite some time. Last weeks it got a number of cleanups based on the experiences of the last years (drop stuff nobody uses, fix some inconsistencies). We consider it being in a pretty good shape now and like to see it in 2.6. This patch is basically the header file with all the structs and ioctls in there. A small module with some helper functions for v4l2 drivers is included too. Related updates (bttv, ...) will follow as separate patches. Gerd --- linux-2.5.45/drivers/media/Kconfig 2002-10-31 14:23:20.000000000 +0100 +++ linux/drivers/media/Kconfig 2002-10-31 14:24:49.000000000 +0100 @@ -12,9 +12,14 @@ this are available from <ftp://ftp.uk.linux.org/pub/linux/video4linux/>. - If you are interested in writing a driver for such an audio/video - device or user software interacting with such a driver, please read - the file <file:Documentation/video4linux/API.html>. + This kernel includes support for the new Video for Linux Two API, + (V4L2) as well as the original system. Drivers and applications + need to be rewritten to use V4L2, but drivers for popular cards + and applications for most video capture functions already exist. + + Documentation for the original API is included in the file + Documentation/video4linux/API.html. Documentation for V4L2 is + available on the web at http://bytesex.org/v4l/ This driver is also available as a module called videodev.o ( = code which can be inserted in and removed from the running kernel --- linux-2.5.45/drivers/media/video/Makefile 2002-10-31 14:03:25.000000000 +0100 +++ linux/drivers/media/video/Makefile 2002-10-31 14:19:51.000000000 +0100 @@ -5,13 +5,14 @@ # All of the (potential) objects that export symbols. # This list comes from 'grep -l EXPORT_SYMBOL *.[hc]'. -export-objs := videodev.o bttv-if.o cpia.o video-buf.o +export-objs := videodev.o v4l2-common.o \ + bttv-if.o cpia.o video-buf.o bttv-objs := bttv-driver.o bttv-cards.o bttv-if.o \ bttv-risc.o bttv-vbi.o zoran-objs := zr36120.o zr36120_i2c.o zr36120_mem.o -obj-$(CONFIG_VIDEO_DEV) += videodev.o +obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-common.o obj-$(CONFIG_VIDEO_BT848) += bttv.o msp3400.o tvaudio.o \ tda7432.o tda9875.o tuner.o video-buf.o --- linux-2.5.45/drivers/media/video/v4l2-common.c 2002-10-31 14:19:51.000000000 +0100 +++ linux/drivers/media/video/v4l2-common.c 2002-10-31 14:19:51.000000000 +0100 @@ -0,0 +1,211 @@ +/* + * Video for Linux Two + * + * A generic video device interface for the LINUX operating system + * using a set of device structures/vectors for low level operations. + * + * This file replaces the videodev.c file that comes with the + * regular kernel distribution. + * + * 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. + * + * Author: Bill Dirks <bdirks@xxxxxxxxxxx> + * based on code by Alan Cox, <alan@xxxxxxxxx> + * + */ + +/* + * Video capture interface for Linux + * + * A generic video device interface for the LINUX operating system + * using a set of device structures/vectors for low level operations. + * + * 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. + * + * Author: Alan Cox, <alan@xxxxxxxxxx> + * + * Fixes: + */ + +/* + * Video4linux 1/2 integration by Justin Schoeman + * <justin@xxxxxxxxxxxxxxxxxxxx> + * 2.4 PROCFS support ported from 2.4 kernels by + * Iñaki García Etxebarria <garetxe@xxxxxxxxxxxxx> + * Makefile fix by "W. Michael Petullo" <mike@xxxxxxxx> + * 2.4 devfs support ported from 2.4 kernels by + * Dan Merillat <dan@xxxxxxxxxxxx> + * Added Gerd Knorrs v4l1 enhancements (Justin Schoeman) + */ + +#include <linux/config.h> +#include <linux/version.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/smp_lock.h> +#include <linux/mm.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <asm/uaccess.h> +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/io.h> +#include <asm/div64.h> + +#ifdef CONFIG_KMOD +#include <linux/kmod.h> +#endif + +#if defined(CONFIG_UST) || defined(CONFIG_UST_MODULE) +#include <linux/ust.h> +#endif + +#include <linux/videodev.h> + +MODULE_AUTHOR("Bill Dirks, Justin Schoeman, Gerd Knorr"); +MODULE_DESCRIPTION("misc helper functions for v4l2 device drivers"); +MODULE_LICENSE("GPL"); + +/* + * + * V 4 L 2 D R I V E R H E L P E R A P I + * + */ + +/* + * Video Standard Operations (contributed by Michael Schimek) + */ + +/* This is the recommended method to deal with the framerate fields. More + sophisticated drivers will access the fields directly. */ +unsigned int +v4l2_video_std_fps(struct v4l2_standard *vs) +{ + if (vs->frameperiod.numerator > 0) + return (((vs->frameperiod.denominator << 8) / + vs->frameperiod.numerator) + + (1 << 7)) / (1 << 8); + return 0; +} + +/* Fill in the fields of a v4l2_standard structure according to the + 'id' and 'transmission' parameters. Returns negative on error. */ +int v4l2_video_std_construct(struct v4l2_standard *vs, + int id, char *name) +{ + memset(vs, 0, sizeof(struct v4l2_standard)); + + vs->id = id; + if (id & (V4L2_STD_NTSC | V4L2_STD_PAL_M)) { + vs->frameperiod.numerator = 1001; + vs->frameperiod.denominator = 30000; + vs->framelines = 525; + } else { + vs->frameperiod.numerator = 1; + vs->frameperiod.denominator = 25; + vs->framelines = 625; + } + strncpy(vs->name,name,sizeof(vs->name)); + return 0; +} + + +/* ----------------------------------------------------------------- */ + +char *v4l2_field_names[] = { + [V4L2_FIELD_ANY] = "any", + [V4L2_FIELD_NONE] = "none", + [V4L2_FIELD_TOP] = "top", + [V4L2_FIELD_BOTTOM] = "bottom", + [V4L2_FIELD_INTERLACED] = "interlaced", + [V4L2_FIELD_SEQ_TB] = "seq-tb", + [V4L2_FIELD_SEQ_BT] = "seq-bt", + [V4L2_FIELD_ALTERNATE] = "alternate", +}; + +char *v4l2_type_names[] = { + [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap", + [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over", + [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out", + [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", + [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", +}; + +char *v4l2_ioctl_names[256] = { +#if __GNUC__ >= 3 + [0 ... 255] = "UNKNOWN", +#endif + [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP", + [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED", + [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT", + [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT", + [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT", +#if 0 + [_IOC_NR(VIDIOC_G_COMP)] = "VIDIOC_G_COMP", + [_IOC_NR(VIDIOC_S_COMP)] = "VIDIOC_S_COMP", +#endif + [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS", + [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF", + [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF", + [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF", + [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY", + [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF", + [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF", + [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON", + [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF", + [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM", + [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM", + [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD", + [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD", + [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD", + [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT", + [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL", + [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL", + [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER", + [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER", + [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO", + [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO", + [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL", + [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU", + [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT", + [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT", + [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT", + [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT", + [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT", + [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT", + [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT", + [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR", + [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR", + [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY", + [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY", + [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", + [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", + [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", + [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", + [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", + [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", + [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT", +}; + +/* ----------------------------------------------------------------- */ + +EXPORT_SYMBOL(v4l2_video_std_fps); +EXPORT_SYMBOL(v4l2_video_std_construct); + +EXPORT_SYMBOL(v4l2_field_names); +EXPORT_SYMBOL(v4l2_type_names); +EXPORT_SYMBOL(v4l2_ioctl_names); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ --- linux-2.5.45/include/linux/videodev.h 2002-10-31 14:05:29.000000000 +0100 +++ linux/include/linux/videodev.h 2002-10-31 14:26:32.000000000 +0100 @@ -4,10 +4,10 @@ #include <linux/types.h> #include <linux/version.h> -#if 0 +#if 1 /* * v4l2 is still work-in-progress, integration planed for 2.5.x - * v4l2 project homepage: http://www.thedirks.org/v4l2/ + * documentation: http://bytesex.org/v4l/ * patches available from: http://bytesex.org/patches/ */ # define HAVE_V4L2 1 @@ -32,10 +32,7 @@ int minor; /* new interface -- we will use file_operations directly - * like soundcore does. - * kernel_ioctl() will be called by video_generic_ioctl. - * video_generic_ioctl() does the userspace copying of the - * ioctl arguments */ + * like soundcore does. */ struct file_operations *fops; void *priv; /* Used to be 'private' but that upsets C++ */ @@ -397,7 +394,7 @@ #define VID_HARDWARE_PWC 31 /* Philips webcams */ #define VID_HARDWARE_MEYE 32 /* Sony Vaio MotionEye cameras */ #define VID_HARDWARE_CPIA2 33 -#define VID_HARDWARE_VICAM 34 +#define VID_HARDWARE_VICAM 34 #endif /* __LINUX_VIDEODEV_H */ --- linux-2.5.45/include/linux/videodev2.h 2002-10-31 14:19:52.000000000 +0100 +++ linux/include/linux/videodev2.h 2002-10-31 14:27:10.000000000 +0100 @@ -0,0 +1,859 @@ +#ifndef __LINUX_VIDEODEV2_H +#define __LINUX_VIDEODEV2_H +/* + * Video for Linux Two + * + * Header file for v4l or V4L2 drivers and applications, for + * Linux kernels 2.2.x or 2.4.x. + * + * See http://bytesex.org/v4l/ for API specs and other + * v4l2 documentation. + * + * Author: Bill Dirks <bdirks@xxxxxxxxxxx> + * Justin Schoeman + * et al. + */ +#include <linux/time.h> /* need struct timeval */ + +/* + * M I S C E L L A N E O U S + */ + +/* Four-character-code (FOURCC) */ +#define v4l2_fourcc(a,b,c,d)\ + (((__u32)(a)<<0)|((__u32)(b)<<8)|((__u32)(c)<<16)|((__u32)(d)<<24)) + +/* + * E N U M S + */ +enum v4l2_field { + V4L2_FIELD_ANY = 0, /* driver can choose from none, + top, bottom, interlaced + depending on whatever it thinks + is approximate ... */ + V4L2_FIELD_NONE = 1, /* this device has no fields ... */ + V4L2_FIELD_TOP = 2, /* top field only */ + V4L2_FIELD_BOTTOM = 3, /* bottom field only */ + V4L2_FIELD_INTERLACED = 4, /* both fields interlaced */ + V4L2_FIELD_SEQ_TB = 5, /* both fields sequential into one + buffer, top-bottom order */ + V4L2_FIELD_SEQ_BT = 6, /* same as above + bottom-top order */ + V4L2_FIELD_ALTERNATE = 7, /* both fields alternating into + separate buffers */ +}; +#define V4L2_FIELD_HAS_TOP(field) \ + ((field) == V4L2_FIELD_TOP ||\ + (field) == V4L2_FIELD_INTERLACED ||\ + (field) == V4L2_FIELD_SEQ_TB ||\ + (field) == V4L2_FIELD_SEQ_BT) +#define V4L2_FIELD_HAS_BOTTOM(field) \ + ((field) == V4L2_FIELD_BOTTOM ||\ + (field) == V4L2_FIELD_INTERLACED ||\ + (field) == V4L2_FIELD_SEQ_TB ||\ + (field) == V4L2_FIELD_SEQ_BT) +#define V4L2_FIELD_HAS_BOTH(field) \ + ((field) == V4L2_FIELD_INTERLACED ||\ + (field) == V4L2_FIELD_SEQ_TB ||\ + (field) == V4L2_FIELD_SEQ_BT) + +enum v4l2_buf_type { + V4L2_BUF_TYPE_VIDEO_CAPTURE = 1, + V4L2_BUF_TYPE_VIDEO_OUTPUT = 2, + V4L2_BUF_TYPE_VIDEO_OVERLAY = 3, + V4L2_BUF_TYPE_VBI_CAPTURE = 4, + V4L2_BUF_TYPE_VBI_OUTPUT = 5, + V4L2_BUF_TYPE_PRIVATE = 0x80, +}; + +enum v4l2_ctrl_type { + V4L2_CTRL_TYPE_INTEGER = 1, + V4L2_CTRL_TYPE_BOOLEAN = 2, + V4L2_CTRL_TYPE_MENU = 3, + V4L2_CTRL_TYPE_BUTTON = 4, +}; + +enum v4l2_tuner_type { + V4L2_TUNER_RADIO = 1, + V4L2_TUNER_ANALOG_TV = 2, +}; + +enum v4l2_memory { + V4L2_MEMORY_MMAP = 1, + V4L2_MEMORY_USERPTR = 2, + V4L2_MEMORY_OVERLAY = 3, +}; + +/* see also http://vektor.theorem.ca/graphics/ycbcr/ */ +enum v4l2_colorspace { + /* ITU-R 601 -- broadcast NTSC/PAL */ + V4L2_COLORSPACE_SMPTE170M = 1, + + /* 1125-Line (US) HDTV */ + V4L2_COLORSPACE_SMPTE240M = 2, + + /* HD and modern captures. */ + V4L2_COLORSPACE_REC709 = 3, + + /* broken BT878 extents (601, luma range 16-253 instead of 16-235) */ + V4L2_COLORSPACE_BT878 = 4, + + /* These should be useful. Assume 601 extents. */ + V4L2_COLORSPACE_470_SYSTEM_M = 5, + V4L2_COLORSPACE_470_SYSTEM_BG = 6, + + /* I know there will be cameras that send this. So, this is + * unspecified chromaticities and full 0-255 on each of the + * Y'CbCr components + */ + V4L2_COLORSPACE_JPEG = 7, + + /* For RGB colourspaces, this is probably a good start. */ + V4L2_COLORSPACE_SRGB = 8, +}; + +struct v4l2_rect { + __s32 left; + __s32 top; + __s32 width; + __s32 height; +}; + +struct v4l2_fract { + __u32 numerator; + __u32 denominator; +}; + +/* + * D R I V E R C A P A B I L I T I E S + */ +struct v4l2_capability +{ + __u8 driver[16]; /* i.e. "bttv" */ + __u8 card[32]; /* i.e. "Hauppauge WinTV" */ + __u8 bus_info[32]; /* "PCI:" + pci_dev->slot_name */ + __u32 version; /* should use KERNEL_VERSION() */ + __u32 capabilities; /* Device capabilities */ + __u32 reserved[4]; +}; + +/* Values for 'capabilities' field */ +#define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */ +#define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */ +#define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */ +#define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a VBI capture device */ +#define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a VBI output device */ +#define V4L2_CAP_RDS_CAPTURE 0x00000100 /* RDS data capture */ + +#define V4L2_CAP_TUNER 0x00010000 /* Has a tuner */ +#define V4L2_CAP_AUDIO 0x00020000 /* has audio support */ + +#define V4L2_CAP_READWRITE 0x01000000 /* read/write systemcalls */ +#define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */ +#define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */ + +/* + * V I D E O I M A G E F O R M A T + */ + +struct v4l2_pix_format +{ + __u32 width; + __u32 height; + __u32 pixelformat; + enum v4l2_field field; + __u32 bytesperline; /* for padding, zero if unused */ + __u32 sizeimage; + enum v4l2_colorspace colorspace; + __u32 priv; /* private data, depends on pixelformat */ +}; + +/* Pixel format FOURCC depth Description */ +#define V4L2_PIX_FMT_RGB332 v4l2_fourcc('R','G','B','1') /* 8 RGB-3-3-2 */ +#define V4L2_PIX_FMT_RGB555 v4l2_fourcc('R','G','B','O') /* 16 RGB-5-5-5 */ +#define V4L2_PIX_FMT_RGB565 v4l2_fourcc('R','G','B','P') /* 16 RGB-5-6-5 */ +#define V4L2_PIX_FMT_RGB555X v4l2_fourcc('R','G','B','Q') /* 16 RGB-5-5-5 BE */ +#define V4L2_PIX_FMT_RGB565X v4l2_fourcc('R','G','B','R') /* 16 RGB-5-6-5 BE */ +#define V4L2_PIX_FMT_BGR24 v4l2_fourcc('B','G','R','3') /* 24 BGR-8-8-8 */ +#define V4L2_PIX_FMT_RGB24 v4l2_fourcc('R','G','B','3') /* 24 RGB-8-8-8 */ +#define V4L2_PIX_FMT_BGR32 v4l2_fourcc('B','G','R','4') /* 32 BGR-8-8-8-8 */ +#define V4L2_PIX_FMT_RGB32 v4l2_fourcc('R','G','B','4') /* 32 RGB-8-8-8-8 */ +#define V4L2_PIX_FMT_GREY v4l2_fourcc('G','R','E','Y') /* 8 Greyscale */ +#define V4L2_PIX_FMT_YVU410 v4l2_fourcc('Y','V','U','9') /* 9 YVU 4:1:0 */ +#define V4L2_PIX_FMT_YVU420 v4l2_fourcc('Y','V','1','2') /* 12 YVU 4:2:0 */ +#define V4L2_PIX_FMT_YUYV v4l2_fourcc('Y','U','Y','V') /* 16 YUV 4:2:2 */ +#define V4L2_PIX_FMT_UYVY v4l2_fourcc('U','Y','V','Y') /* 16 YUV 4:2:2 */ +#define V4L2_PIX_FMT_YUV422P v4l2_fourcc('4','2','2','P') /* 16 YVU422 planar */ +#define V4L2_PIX_FMT_YUV411P v4l2_fourcc('4','1','1','P') /* 16 YVU411 planar */ +#define V4L2_PIX_FMT_Y41P v4l2_fourcc('Y','4','1','P') /* 12 YUV 4:1:1 */ + +/* two planes -- one Y, one Cr + Cb interleaved */ +#define V4L2_PIX_FMT_NV12 v4l2_fourcc('N','V','1','2') /* 12 Y/CbCr 4:2:0 */ +#define V4L2_PIX_FMT_NV21 v4l2_fourcc('N','V','2','1') /* 12 Y/CrCb 4:2:0 */ + +/* The following formats are not defined in the V4L2 specification */ +#define V4L2_PIX_FMT_YUV410 v4l2_fourcc('Y','U','V','9') /* 9 YUV 4:1:0 */ +#define V4L2_PIX_FMT_YUV420 v4l2_fourcc('Y','U','1','2') /* 12 YUV 4:2:0 */ +#define V4L2_PIX_FMT_YYUV v4l2_fourcc('Y','Y','U','V') /* 16 YUV 4:2:2 */ +#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H','I','2','4') /* 8 8-bit color */ + +/* compressed formats */ +#define V4L2_PIX_FMT_MJPEG v4l2_fourcc('M','J','P','G') /* Motion-JPEG */ +#define V4L2_PIX_FMT_JPEG v4l2_fourcc('J','P','E','G') /* JFIF JPEG */ +#define V4L2_PIX_FMT_DV v4l2_fourcc('d','v','s','d') /* 1394 */ +#define V4L2_PIX_FMT_MPEG v4l2_fourcc('M','P','E','G') /* MPEG */ + +/* Vendor-specific formats */ +#define V4L2_PIX_FMT_WNVA v4l2_fourcc('W','N','V','A') /* Winnov hw compres */ + +/* + * F O R M A T E N U M E R A T I O N + */ +struct v4l2_fmtdesc +{ + __u32 index; /* Format number */ + enum v4l2_buf_type type; /* buffer type */ + __u32 flags; + __u8 description[32]; /* Description string */ + __u32 pixelformat; /* Format fourcc */ + __u32 reserved[4]; +}; + +#define V4L2_FMT_FLAG_COMPRESSED 0x0001 + + +/* + * T I M E C O D E + */ +struct v4l2_timecode +{ + __u32 type; + __u32 flags; + __u8 frames; + __u8 seconds; + __u8 minutes; + __u8 hours; + __u8 userbits[4]; +}; + +/* Type */ +#define V4L2_TC_TYPE_24FPS 1 +#define V4L2_TC_TYPE_25FPS 2 +#define V4L2_TC_TYPE_30FPS 3 +#define V4L2_TC_TYPE_50FPS 4 +#define V4L2_TC_TYPE_60FPS 5 + +/* Flags */ +#define V4L2_TC_FLAG_DROPFRAME 0x0001 /* "drop-frame" mode */ +#define V4L2_TC_FLAG_COLORFRAME 0x0002 +#define V4L2_TC_USERBITS_field 0x000C +#define V4L2_TC_USERBITS_USERDEFINED 0x0000 +#define V4L2_TC_USERBITS_8BITCHARS 0x0008 +/* The above is based on SMPTE timecodes */ + + +/* + * C O M P R E S S I O N P A R A M E T E R S + */ +#if 0 +/* ### generic compression settings don't work, there is too much + * ### codec-specific stuff. Maybe reuse that for MPEG codec settings + * ### later ... */ +struct v4l2_compression +{ + __u32 quality; + __u32 keyframerate; + __u32 pframerate; + __u32 reserved[5]; +}; +#endif + +struct v4l2_jpegcompression +{ + int quality; + + int APPn; /* Number of APP segment to be written, + * must be 0..15 */ + int APP_len; /* Length of data in JPEG APPn segment */ + char APP_data[60]; /* Data in the JPEG APPn segment. */ + + int COM_len; /* Length of data in JPEG COM segment */ + char COM_data[60]; /* Data in JPEG COM segment */ + + __u32 jpeg_markers; /* Which markers should go into the JPEG + * output. Unless you exactly know what + * you do, leave them untouched. + * Inluding less markers will make the + * resulting code smaller, but there will + * be fewer aplications which can read it. + * The presence of the APP and COM marker + * is influenced by APP_len and COM_len + * ONLY, not by this property! */ + +#define V4L2_JPEG_MARKER_DHT (1<<3) /* Define Huffman Tables */ +#define V4L2_JPEG_MARKER_DQT (1<<4) /* Define Quantization Tables */ +#define V4L2_JPEG_MARKER_DRI (1<<5) /* Define Restart Interval */ +#define V4L2_JPEG_MARKER_COM (1<<6) /* Comment segment */ +#define V4L2_JPEG_MARKER_APP (1<<7) /* App segment, driver will + * allways use APP0 */ +}; + + +/* + * M E M O R Y - M A P P I N G B U F F E R S + */ +struct v4l2_requestbuffers +{ + __u32 count; + enum v4l2_buf_type type; + enum v4l2_memory memory; + __u32 reserved[2]; +}; + +struct v4l2_buffer +{ + __u32 index; + enum v4l2_buf_type type; + __u32 bytesused; + __u32 flags; + enum v4l2_field field; + struct timeval timestamp; + struct v4l2_timecode timecode; + __u32 sequence; + + /* memory location */ + enum v4l2_memory memory; + union { + __u32 offset; + unsigned long userptr; + } m; + __u32 length; + + __u32 reserved[2]; +}; + +/* Flags for 'flags' field */ +#define V4L2_BUF_FLAG_MAPPED 0x0001 /* Buffer is mapped (flag) */ +#define V4L2_BUF_FLAG_QUEUED 0x0002 /* Buffer is queued for processing */ +#define V4L2_BUF_FLAG_DONE 0x0004 /* Buffer is ready */ +#define V4L2_BUF_FLAG_KEYFRAME 0x0008 /* Image is a keyframe (I-frame) */ +#define V4L2_BUF_FLAG_PFRAME 0x0010 /* Image is a P-frame */ +#define V4L2_BUF_FLAG_BFRAME 0x0020 /* Image is a B-frame */ +#define V4L2_BUF_FLAG_TIMECODE 0x0100 /* timecode field is valid */ + +/* + * O V E R L A Y P R E V I E W + */ +struct v4l2_framebuffer +{ + __u32 capability; + __u32 flags; +/* FIXME: in theory we should pass something like PCI device + memory + * region + offset instead of some physical address */ + void* base; + struct v4l2_pix_format fmt; +}; +/* Flags for the 'capability' field. Read only */ +#define V4L2_FBUF_CAP_EXTERNOVERLAY 0x0001 +#define V4L2_FBUF_CAP_CHROMAKEY 0x0002 +#define V4L2_FBUF_CAP_LIST_CLIPPING 0x0004 +#define V4L2_FBUF_CAP_BITMAP_CLIPPING 0x0008 +/* Flags for the 'flags' field. */ +#define V4L2_FBUF_FLAG_PRIMARY 0x0001 +#define V4L2_FBUF_FLAG_OVERLAY 0x0002 +#define V4L2_FBUF_FLAG_CHROMAKEY 0x0004 + +struct v4l2_clip +{ + struct v4l2_rect c; + struct v4l2_clip *next; +}; + +struct v4l2_window +{ + struct v4l2_rect w; + enum v4l2_field field; + __u32 chromakey; + struct v4l2_clip *clips; + __u32 clipcount; + void *bitmap; +}; + + +/* + * C A P T U R E P A R A M E T E R S + */ +struct v4l2_captureparm +{ + __u32 capability; /* Supported modes */ + __u32 capturemode; /* Current mode */ + struct v4l2_fract timeperframe; /* Time per frame in .1us units */ + __u32 extendedmode; /* Driver-specific extensions */ + __u32 readbuffers; /* # of buffers for read */ + __u32 reserved[4]; +}; +/* Flags for 'capability' and 'capturemode' fields */ +#define V4L2_MODE_HIGHQUALITY 0x0001 /* High quality imaging mode */ +#define V4L2_CAP_TIMEPERFRAME 0x1000 /* timeperframe field is supported */ + +struct v4l2_outputparm +{ + __u32 capability; /* Supported modes */ + __u32 outputmode; /* Current mode */ + struct v4l2_fract timeperframe; /* Time per frame in seconds */ + __u32 extendedmode; /* Driver-specific extensions */ + __u32 writebuffers; /* # of buffers for write */ + __u32 reserved[4]; +}; + +/* + * I N P U T I M A G E C R O P P I N G + */ + +struct v4l2_cropcap { + enum v4l2_buf_type type; + struct v4l2_rect bounds; + struct v4l2_rect defrect; + struct v4l2_fract pixelaspect; +}; + +struct v4l2_crop { + enum v4l2_buf_type type; + struct v4l2_rect c; +}; + +/* + * A N A L O G V I D E O S T A N D A R D + */ + +typedef __u64 v4l2_std_id; + +/* one bit for each */ +#define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001) +#define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002) +#define V4L2_STD_PAL_G ((v4l2_std_id)0x00000004) +#define V4L2_STD_PAL_H ((v4l2_std_id)0x00000008) +#define V4L2_STD_PAL_I ((v4l2_std_id)0x00000010) +#define V4L2_STD_PAL_D ((v4l2_std_id)0x00000020) +#define V4L2_STD_PAL_D1 ((v4l2_std_id)0x00000040) +#define V4L2_STD_PAL_K ((v4l2_std_id)0x00000080) + +#define V4L2_STD_PAL_M ((v4l2_std_id)0x00000100) +#define V4L2_STD_PAL_N ((v4l2_std_id)0x00000200) +#define V4L2_STD_PAL_Nc ((v4l2_std_id)0x00000400) +#define V4L2_STD_PAL_60 ((v4l2_std_id)0x00000800) + +#define V4L2_STD_NTSC_M ((v4l2_std_id)0x00001000) +#define V4L2_STD_NTSC_M_JP ((v4l2_std_id)0x00002000) + +#define V4L2_STD_SECAM_B ((v4l2_std_id)0x00010000) +#define V4L2_STD_SECAM_D ((v4l2_std_id)0x00020000) +#define V4L2_STD_SECAM_G ((v4l2_std_id)0x00040000) +#define V4L2_STD_SECAM_H ((v4l2_std_id)0x00080000) +#define V4L2_STD_SECAM_K ((v4l2_std_id)0x00100000) +#define V4L2_STD_SECAM_K1 ((v4l2_std_id)0x00200000) +#define V4L2_STD_SECAM_L ((v4l2_std_id)0x00400000) + +/* ATSC/HDTV */ +#define V4L2_STD_ATSC_8_VSB ((v4l2_std_id)0x01000000) +#define V4L2_STD_ATSC_16_VSB ((v4l2_std_id)0x02000000) + +/* some common needed stuff */ +#define V4L2_STD_PAL_BG (V4L2_STD_PAL_B |\ + V4L2_STD_PAL_B1 |\ + V4L2_STD_PAL_G) +#define V4L2_STD_PAL_DK (V4L2_STD_PAL_D |\ + V4L2_STD_PAL_D1 |\ + V4L2_STD_PAL_K) +#define V4L2_STD_PAL (V4L2_STD_PAL_BG |\ + V4L2_STD_PAL_DK |\ + V4L2_STD_PAL_H |\ + V4L2_STD_PAL_I) +#define V4L2_STD_NTSC (V4L2_STD_NTSC_M |\ + V4L2_STD_NTSC_M_JP) +#define V4L2_STD_SECAM (V4L2_STD_SECAM_B |\ + V4L2_STD_SECAM_D |\ + V4L2_STD_SECAM_G |\ + V4L2_STD_SECAM_H |\ + V4L2_STD_SECAM_K |\ + V4L2_STD_SECAM_K1 |\ + V4L2_STD_SECAM_L) + +#define V4L2_STD_525_60 (V4L2_STD_PAL_M |\ + V4L2_STD_PAL_60 |\ + V4L2_STD_NTSC) +#define V4L2_STD_625_50 (V4L2_STD_PAL |\ + V4L2_STD_PAL_N |\ + V4L2_STD_PAL_Nc |\ + V4L2_STD_SECAM) + +#define V4L2_STD_UNKNOWN 0 +#define V4L2_STD_ALL (V4L2_STD_525_60 |\ + V4L2_STD_625_50) + +struct v4l2_standard +{ + __u32 index; + v4l2_std_id id; + __u8 name[24]; + struct v4l2_fract frameperiod; /* Frames, not fields */ + __u32 framelines; + __u32 reserved[4]; +}; + + +/* + * V I D E O I N P U T S + */ +struct v4l2_input +{ + __u32 index; /* Which input */ + __u8 name[32]; /* Label */ + __u32 type; /* Type of input */ + __u32 audioset; /* Associated audios (bitfield) */ + __u32 tuner; /* Associated tuner */ + v4l2_std_id std; + __u32 status; + __u32 reserved[4]; +}; +/* Values for the 'type' field */ +#define V4L2_INPUT_TYPE_TUNER 1 +#define V4L2_INPUT_TYPE_CAMERA 2 + +/* field 'status' - general */ +#define V4L2_IN_ST_NO_POWER 0x00000001 /* Attached device is off */ +#define V4L2_IN_ST_NO_SIGNAL 0x00000002 +#define V4L2_IN_ST_NO_COLOR 0x00000004 + +/* field 'status' - analog */ +#define V4L2_IN_ST_NO_H_LOCK 0x00000100 /* No horizontal sync lock */ +#define V4L2_IN_ST_COLOR_KILL 0x00000200 /* Color killer is active */ + +/* field 'status' - digital */ +#define V4L2_IN_ST_NO_SYNC 0x00010000 /* No synchronization lock */ +#define V4L2_IN_ST_NO_EQU 0x00020000 /* No equalizer lock */ +#define V4L2_IN_ST_NO_CARRIER 0x00040000 /* Carrier recovery failed */ + +/* field 'status' - VCR and set-top box */ +#define V4L2_IN_ST_MACROVISION 0x01000000 /* Macrovision detected */ +#define V4L2_IN_ST_NO_ACCESS 0x02000000 /* Conditional access denied */ +#define V4L2_IN_ST_VTR 0x04000000 /* VTR time constant */ + +/* + * V I D E O O U T P U T S + */ +struct v4l2_output +{ + __u32 index; /* Which output */ + __u8 name[32]; /* Label */ + __u32 type; /* Type of output */ + __u32 audioset; /* Associated audios (bitfield) */ + __u32 modulator; /* Associated modulator */ + v4l2_std_id std; + __u32 reserved[4]; +}; +/* Values for the 'type' field */ +#define V4L2_OUTPUT_TYPE_MODULATOR 1 +#define V4L2_OUTPUT_TYPE_ANALOG 2 +#define V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY 3 + +/* + * C O N T R O L S + */ +struct v4l2_control +{ + __u32 id; + __s32 value; +}; + +/* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */ +struct v4l2_queryctrl +{ + __u32 id; + enum v4l2_ctrl_type type; + __u8 name[32]; /* Whatever */ + __s32 minimum; /* Note signedness */ + __s32 maximum; + __s32 step; + __s32 default_value; + __u32 flags; + __u32 reserved[2]; +}; + +/* Used in the VIDIOC_QUERYMENU ioctl for querying menu items */ +struct v4l2_querymenu +{ + __u32 id; + __u32 index; + __u8 name[32]; /* Whatever */ + __u32 reserved; +}; + +/* Control flags */ +#define V4L2_CTRL_FLAG_DISABLED 0x0001 +#define V4L2_CTRL_FLAG_GRABBED 0x0002 + +/* Control IDs defined by V4L2 */ +#define V4L2_CID_BASE 0x00980900 +/* IDs reserved for driver specific controls */ +#define V4L2_CID_PRIVATE_BASE 0x08000000 + +#define V4L2_CID_BRIGHTNESS (V4L2_CID_BASE+0) +#define V4L2_CID_CONTRAST (V4L2_CID_BASE+1) +#define V4L2_CID_SATURATION (V4L2_CID_BASE+2) +#define V4L2_CID_HUE (V4L2_CID_BASE+3) +#define V4L2_CID_AUDIO_VOLUME (V4L2_CID_BASE+5) +#define V4L2_CID_AUDIO_BALANCE (V4L2_CID_BASE+6) +#define V4L2_CID_AUDIO_BASS (V4L2_CID_BASE+7) +#define V4L2_CID_AUDIO_TREBLE (V4L2_CID_BASE+8) +#define V4L2_CID_AUDIO_MUTE (V4L2_CID_BASE+9) +#define V4L2_CID_AUDIO_LOUDNESS (V4L2_CID_BASE+10) +#define V4L2_CID_BLACK_LEVEL (V4L2_CID_BASE+11) +#define V4L2_CID_AUTO_WHITE_BALANCE (V4L2_CID_BASE+12) +#define V4L2_CID_DO_WHITE_BALANCE (V4L2_CID_BASE+13) +#define V4L2_CID_RED_BALANCE (V4L2_CID_BASE+14) +#define V4L2_CID_BLUE_BALANCE (V4L2_CID_BASE+15) +#define V4L2_CID_GAMMA (V4L2_CID_BASE+16) +#define V4L2_CID_WHITENESS (V4L2_CID_GAMMA) /* ? Not sure */ +#define V4L2_CID_EXPOSURE (V4L2_CID_BASE+17) +#define V4L2_CID_AUTOGAIN (V4L2_CID_BASE+18) +#define V4L2_CID_GAIN (V4L2_CID_BASE+19) +#define V4L2_CID_HFLIP (V4L2_CID_BASE+20) +#define V4L2_CID_VFLIP (V4L2_CID_BASE+21) +#define V4L2_CID_HCENTER (V4L2_CID_BASE+22) +#define V4L2_CID_VCENTER (V4L2_CID_BASE+23) +#define V4L2_CID_LASTP1 (V4L2_CID_BASE+24) /* last CID + 1 */ + +/* + * T U N I N G + */ +struct v4l2_tuner +{ + __u32 index; + __u8 name[32]; + enum v4l2_tuner_type type; + __u32 capability; + __u32 rangelow; + __u32 rangehigh; + __u32 rxsubchans; + __u32 audmode; + __s32 signal; + __s32 afc; + __u32 reserved[4]; +}; + +struct v4l2_modulator +{ + __u32 index; + __u8 name[32]; + __u32 capability; + __u32 rangelow; + __u32 rangehigh; + __u32 txsubchans; + __u32 reserved[4]; +}; + +/* Flags for the 'capability' field */ +#define V4L2_TUNER_CAP_LOW 0x0001 +#define V4L2_TUNER_CAP_NORM 0x0002 +#define V4L2_TUNER_CAP_STEREO 0x0010 +#define V4L2_TUNER_CAP_LANG2 0x0020 +#define V4L2_TUNER_CAP_SAP 0x0020 +#define V4L2_TUNER_CAP_LANG1 0x0040 + +/* Flags for the 'rxsubchans' field */ +#define V4L2_TUNER_SUB_MONO 0x0001 +#define V4L2_TUNER_SUB_STEREO 0x0002 +#define V4L2_TUNER_SUB_LANG2 0x0004 +#define V4L2_TUNER_SUB_SAP 0x0004 +#define V4L2_TUNER_SUB_LANG1 0x0008 + +/* Values for the 'audmode' field */ +#define V4L2_TUNER_MODE_MONO 0x0000 +#define V4L2_TUNER_MODE_STEREO 0x0001 +#define V4L2_TUNER_MODE_LANG2 0x0002 +#define V4L2_TUNER_MODE_SAP 0x0002 +#define V4L2_TUNER_MODE_LANG1 0x0003 + +struct v4l2_frequency +{ + __u32 tuner; + enum v4l2_tuner_type type; + __u32 frequency; + __u32 reserved[8]; +}; + +/* + * A U D I O + */ +struct v4l2_audio +{ + __u32 index; + __u8 name[32]; + __u32 capability; + __u32 mode; + __u32 reserved[2]; +}; +/* Flags for the 'capability' field */ +#define V4L2_AUDCAP_STEREO 0x00001 +#define V4L2_AUDCAP_AVL 0x00002 + +/* Flags for the 'mode' field */ +#define V4L2_AUDMODE_AVL 0x00001 + +struct v4l2_audioout +{ + __u32 index; + __u8 name[32]; + __u32 capability; + __u32 mode; + __u32 reserved[2]; +}; + +/* + * D A T A S E R V I C E S ( V B I ) + * + * Data services API by Michael Schimek + */ + +struct v4l2_vbi_format +{ + __u32 sampling_rate; /* in 1 Hz */ + __u32 offset; + __u32 samples_per_line; + __u32 sample_format; /* V4L2_PIX_FMT_* */ + __s32 start[2]; + __u32 count[2]; + __u32 flags; /* V4L2_VBI_* */ + __u32 reserved[2]; /* must be zero */ +}; + +/* VBI flags */ +#define V4L2_VBI_UNSYNC (1<< 0) +#define V4L2_VBI_INTERLACED (1<< 1) + + +/* + * A G G R E G A T E S T R U C T U R E S + */ + +/* Stream data format + */ +struct v4l2_format +{ + enum v4l2_buf_type type; + union + { + struct v4l2_pix_format pix; // V4L2_BUF_TYPE_VIDEO_CAPTURE + struct v4l2_window win; // V4L2_BUF_TYPE_VIDEO_OVERLAY + struct v4l2_vbi_format vbi; // V4L2_BUF_TYPE_VBI_CAPTURE + __u8 raw_data[200]; // user-defined + } fmt; +}; + + +/* Stream type-dependent parameters + */ +struct v4l2_streamparm +{ + enum v4l2_buf_type type; + union + { + struct v4l2_captureparm capture; + struct v4l2_outputparm output; + __u8 raw_data[200]; /* user-defined */ + } parm; +}; + + + +/* + * I O C T L C O D E S F O R V I D E O D E V I C E S + * + */ +#define VIDIOC_QUERYCAP _IOR ('V', 0, struct v4l2_capability) +#define VIDIOC_RESERVED _IO ('V', 1) +#define VIDIOC_ENUM_FMT _IOWR ('V', 2, struct v4l2_fmtdesc) +#define VIDIOC_G_FMT _IOWR ('V', 4, struct v4l2_format) +#define VIDIOC_S_FMT _IOWR ('V', 5, struct v4l2_format) +#if 0 +#define VIDIOC_G_COMP _IOR ('V', 6, struct v4l2_compression) +#define VIDIOC_S_COMP _IOW ('V', 7, struct v4l2_compression) +#endif +#define VIDIOC_REQBUFS _IOWR ('V', 8, struct v4l2_requestbuffers) +#define VIDIOC_QUERYBUF _IOWR ('V', 9, struct v4l2_buffer) +#define VIDIOC_G_FBUF _IOR ('V', 10, struct v4l2_framebuffer) +#define VIDIOC_S_FBUF _IOW ('V', 11, struct v4l2_framebuffer) +#define VIDIOC_OVERLAY _IOWR ('V', 14, int) +#define VIDIOC_QBUF _IOWR ('V', 15, struct v4l2_buffer) +#define VIDIOC_DQBUF _IOWR ('V', 17, struct v4l2_buffer) +#define VIDIOC_STREAMON _IOW ('V', 18, int) +#define VIDIOC_STREAMOFF _IOW ('V', 19, int) +#define VIDIOC_G_PARM _IOWR ('V', 21, struct v4l2_streamparm) +#define VIDIOC_S_PARM _IOW ('V', 22, struct v4l2_streamparm) +#define VIDIOC_G_STD _IOR ('V', 23, v4l2_std_id) +#define VIDIOC_S_STD _IOW ('V', 24, v4l2_std_id) +#define VIDIOC_ENUMSTD _IOWR ('V', 25, struct v4l2_standard) +#define VIDIOC_ENUMINPUT _IOWR ('V', 26, struct v4l2_input) +#define VIDIOC_G_CTRL _IOWR ('V', 27, struct v4l2_control) +#define VIDIOC_S_CTRL _IOW ('V', 28, struct v4l2_control) +#define VIDIOC_G_TUNER _IOWR ('V', 29, struct v4l2_tuner) +#define VIDIOC_S_TUNER _IOW ('V', 30, struct v4l2_tuner) +#define VIDIOC_G_AUDIO _IOWR ('V', 33, struct v4l2_audio) +#define VIDIOC_S_AUDIO _IOW ('V', 34, struct v4l2_audio) +#define VIDIOC_QUERYCTRL _IOWR ('V', 36, struct v4l2_queryctrl) +#define VIDIOC_QUERYMENU _IOWR ('V', 37, struct v4l2_querymenu) +#define VIDIOC_G_INPUT _IOR ('V', 38, int) +#define VIDIOC_S_INPUT _IOWR ('V', 39, int) +#define VIDIOC_G_OUTPUT _IOR ('V', 46, int) +#define VIDIOC_S_OUTPUT _IOWR ('V', 47, int) +#define VIDIOC_ENUMOUTPUT _IOWR ('V', 48, struct v4l2_output) +#define VIDIOC_G_AUDOUT _IOWR ('V', 49, struct v4l2_audioout) +#define VIDIOC_S_AUDOUT _IOW ('V', 50, struct v4l2_audioout) +#define VIDIOC_G_MODULATOR _IOWR ('V', 54, struct v4l2_modulator) +#define VIDIOC_S_MODULATOR _IOW ('V', 55, struct v4l2_modulator) +#define VIDIOC_G_FREQUENCY _IOWR ('V', 56, struct v4l2_frequency) +#define VIDIOC_S_FREQUENCY _IOW ('V', 57, struct v4l2_frequency) +#define VIDIOC_CROPCAP _IOR ('V', 58, struct v4l2_cropcap) +#define VIDIOC_G_CROP _IOWR ('V', 59, struct v4l2_crop) +#define VIDIOC_S_CROP _IOW ('V', 60, struct v4l2_crop) +#define VIDIOC_G_JPEGCOMP _IOR ('V', 61, struct v4l2_jpegcompression) +#define VIDIOC_S_JPEGCOMP _IOW ('V', 62, struct v4l2_jpegcompression) +#define VIDIOC_QUERYSTD _IOR ('V', 63, v4l2_std_id) +#define VIDIOC_TRY_FMT _IOWR ('V', 63, struct v4l2_format) + +#define BASE_VIDIOC_PRIVATE 192 /* 192-255 are private */ + + +#ifdef __KERNEL__ +/* + * + * V 4 L 2 D R I V E R H E L P E R A P I + * + * Some commonly needed functions for drivers (v4l2-common.o module) + */ +#include <linux/fs.h> + +/* Video standard functions */ +extern unsigned int v4l2_video_std_fps(struct v4l2_standard *vs); +extern int v4l2_video_std_construct(struct v4l2_standard *vs, + int id, char *name); + +/* Compatibility layer interface */ +typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file, + unsigned int cmd, void *arg); +int v4l_compat_translate_ioctl(struct inode *inode, struct file *file, + int cmd, void *arg, v4l2_kioctl driver_ioctl); + +/* names for fancy debug output */ +extern char *v4l2_field_names[]; +extern char *v4l2_type_names[]; +extern char *v4l2_ioctl_names[]; + +#endif /* __KERNEL__ */ +#endif /* __LINUX_VIDEODEV2_H */ + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ -- You can't please everybody. And usually if you _try_ to please everybody, the end result is one big mess. -- Linus Torvalds, 2002-04-20
