Table of Contents

V4L2 close() — Close a V4L2 device

V4L2 ioctl() — Program a V4L2 device

ioctl VIDIOC_CREATE_BUFS — Create buffers for Memory Mapped or User Pointer or DMA Buffer I/O

ioctl VIDIOC_CROPCAP — Information about the video cropping and scaling abilities

ioctl VIDIOC_DBG_G_CHIP_INFO — Identify the chips on a TV card

ioctl VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER — Read or write hardware registers

ioctl VIDIOC_DECODER_CMD, VIDIOC_TRY_DECODER_CMD — Execute an decoder command

ioctl VIDIOC_DQEVENT — Dequeue event

ioctl VIDIOC_DV_TIMINGS_CAP, VIDIOC_SUBDEV_DV_TIMINGS_CAP — The capabilities of the Digital Video receiver/transmitter

ioctl VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD — Execute an encoder command

ioctl VIDIOC_ENUMAUDIO — Enumerate audio inputs

ioctl VIDIOC_ENUMAUDOUT — Enumerate audio outputs

ioctl VIDIOC_ENUM_DV_TIMINGS, VIDIOC_SUBDEV_ENUM_DV_TIMINGS — Enumerate supported Digital Video timings

ioctl VIDIOC_ENUM_FMT — Enumerate image formats

ioctl VIDIOC_ENUM_FRAMESIZES — Enumerate frame sizes

ioctl VIDIOC_ENUM_FRAMEINTERVALS — Enumerate frame intervals

ioctl VIDIOC_ENUM_FREQ_BANDS — Enumerate supported frequency bands

ioctl VIDIOC_ENUMINPUT — Enumerate video inputs

ioctl VIDIOC_ENUMOUTPUT — Enumerate video outputs

ioctl VIDIOC_ENUMSTD — Enumerate supported video standards

ioctl VIDIOC_EXPBUF — Export a buffer as a DMABUF file descriptor.

ioctl VIDIOC_G_AUDIO, VIDIOC_S_AUDIO — Query or select the current audio input and its attributes

ioctl VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT — Query or select the current audio output

ioctl VIDIOC_G_CROP, VIDIOC_S_CROP — Get or set the current cropping rectangle

ioctl VIDIOC_G_CTRL, VIDIOC_S_CTRL — Get or set the value of a control

ioctl VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS — Get or set DV timings for input or output

ioctl VIDIOC_G_EDID, VIDIOC_S_EDID — Get or set the EDID of a video receiver/transmitter

ioctl VIDIOC_G_ENC_INDEX — Get meta data about a compressed video stream

ioctl VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS, VIDIOC_TRY_EXT_CTRLS — Get or set the value of several controls, try control values

ioctl VIDIOC_G_FBUF, VIDIOC_S_FBUF — Get or set frame buffer overlay parameters

ioctl VIDIOC_G_FMT, VIDIOC_S_FMT, VIDIOC_TRY_FMT — Get or set the data format, try a format

ioctl VIDIOC_G_FREQUENCY, VIDIOC_S_FREQUENCY — Get or set tuner or modulator radio frequency

ioctl VIDIOC_G_INPUT, VIDIOC_S_INPUT — Query or select the current video input

ioctl VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP

ioctl VIDIOC_G_MODULATOR, VIDIOC_S_MODULATOR — Get or set modulator attributes

ioctl VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT — Query or select the current video output

ioctl VIDIOC_G_PARM, VIDIOC_S_PARM — Get or set streaming parameters

ioctl VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY — Query or request the access priority associated with a file descriptor

ioctl VIDIOC_G_SELECTION, VIDIOC_S_SELECTION — Get or set one of the selection rectangles

ioctl VIDIOC_G_SLICED_VBI_CAP — Query sliced VBI capabilities

ioctl VIDIOC_G_STD, VIDIOC_S_STD — Query or select the video standard of the current input

ioctl VIDIOC_G_TUNER, VIDIOC_S_TUNER — Get or set tuner attributes

ioctl VIDIOC_LOG_STATUS — Log driver status information

ioctl VIDIOC_OVERLAY — Start or stop video overlay

ioctl VIDIOC_PREPARE_BUF — Prepare a buffer for I/O

ioctl VIDIOC_QBUF, VIDIOC_DQBUF — Exchange a buffer with the driver

ioctl VIDIOC_QUERYBUF — Query the status of a buffer

ioctl VIDIOC_QUERYCAP — Query device capabilities

ioctl VIDIOC_QUERYCTRL, VIDIOC_QUERY_EXT_CTRL, VIDIOC_QUERYMENU — Enumerate controls and menu control items

ioctl VIDIOC_QUERY_DV_TIMINGS — Sense the DV preset received by the current input

ioctl VIDIOC_QUERYSTD — Sense the video standard received by the current input

ioctl VIDIOC_REQBUFS — Initiate Memory Mapping or User Pointer I/O

ioctl VIDIOC_S_HW_FREQ_SEEK — Perform a hardware frequency seek

ioctl VIDIOC_STREAMON, VIDIOC_STREAMOFF — Start or stop streaming I/O

ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL — Enumerate frame intervals

ioctl VIDIOC_SUBDEV_ENUM_FRAME_SIZE — Enumerate media bus frame sizes

ioctl VIDIOC_SUBDEV_ENUM_MBUS_CODE — Enumerate media bus formats

ioctl VIDIOC_SUBDEV_G_CROP, VIDIOC_SUBDEV_S_CROP — Get or set the crop rectangle on a subdev pad

ioctl VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT — Get or set the data format on a subdev pad

ioctl VIDIOC_SUBDEV_G_FRAME_INTERVAL, VIDIOC_SUBDEV_S_FRAME_INTERVAL — Get or set the frame interval on a subdev pad

ioctl VIDIOC_SUBDEV_G_SELECTION, VIDIOC_SUBDEV_S_SELECTION — Get or set selection rectangles on a subdev pad

ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT — Subscribe or unsubscribe event

V4L2 mmap() — Map device memory into application address space

V4L2 munmap() — Unmap device memory

V4L2 open() — Open a V4L2 device

V4L2 poll() — Wait for some event on a file descriptor

V4L2 read() — Read from a V4L2 device

V4L2 select() — Synchronous I/O multiplexing

V4L2 write() — Write to a V4L2 device