7. Function Reference

• 7.1. V4L2 close()
• 7.2. V4L2 ioctl()
• 7.3. ioctl VIDIOC_CREATE_BUFS
• 7.4. ioctl VIDIOC_CROPCAP
• 7.5. ioctl VIDIOC_DBG_G_CHIP_INFO
• 7.6. ioctl VIDIOC_DBG_G_REGISTER, VIDIOC_DBG_S_REGISTER
• 7.7. ioctl VIDIOC_DECODER_CMD, VIDIOC_TRY_DECODER_CMD
• 7.8. ioctl VIDIOC_DQEVENT
• 7.9. ioctl VIDIOC_DV_TIMINGS_CAP, VIDIOC_SUBDEV_DV_TIMINGS_CAP
• 7.10. ioctl VIDIOC_ENCODER_CMD, VIDIOC_TRY_ENCODER_CMD
• 7.11. ioctl VIDIOC_ENUMAUDIO
• 7.12. ioctl VIDIOC_ENUMAUDOUT
• 7.13. ioctl VIDIOC_ENUM_DV_TIMINGS, VIDIOC_SUBDEV_ENUM_DV_TIMINGS
• 7.14. ioctl VIDIOC_ENUM_FMT
• 7.15. ioctl VIDIOC_ENUM_FRAMESIZES
• 7.16. ioctl VIDIOC_ENUM_FRAMEINTERVALS
• 7.17. ioctl VIDIOC_ENUM_FREQ_BANDS
• 7.18. ioctl VIDIOC_ENUMINPUT
• 7.19. ioctl VIDIOC_ENUMOUTPUT
• 7.20. ioctl VIDIOC_ENUMSTD, VIDIOC_SUBDEV_ENUMSTD
• 7.21. ioctl VIDIOC_EXPBUF
• 7.22. ioctl VIDIOC_G_AUDIO, VIDIOC_S_AUDIO
• 7.23. ioctl VIDIOC_G_AUDOUT, VIDIOC_S_AUDOUT
• 7.24. ioctl VIDIOC_G_CROP, VIDIOC_S_CROP
• 7.25. ioctl VIDIOC_G_CTRL, VIDIOC_S_CTRL
• 7.26. ioctl VIDIOC_G_DV_TIMINGS, VIDIOC_S_DV_TIMINGS
• 7.27. ioctl VIDIOC_G_EDID, VIDIOC_S_EDID, VIDIOC_SUBDEV_G_EDID, VIDIOC_SUBDEV_S_EDID
• 7.28. ioctl VIDIOC_G_ENC_INDEX
• 7.29. ioctl VIDIOC_G_EXT_CTRLS, VIDIOC_S_EXT_CTRLS, VIDIOC_TRY_EXT_CTRLS
• 7.30. ioctl VIDIOC_G_FBUF, VIDIOC_S_FBUF
• 7.31. ioctl VIDIOC_G_FMT, VIDIOC_S_FMT, VIDIOC_TRY_FMT
• 7.32. ioctl VIDIOC_G_FREQUENCY, VIDIOC_S_FREQUENCY
• 7.33. ioctl VIDIOC_G_INPUT, VIDIOC_S_INPUT
• 7.34. ioctl VIDIOC_G_JPEGCOMP, VIDIOC_S_JPEGCOMP
• 7.35. ioctl VIDIOC_G_MODULATOR, VIDIOC_S_MODULATOR
• 7.36. ioctl VIDIOC_G_OUTPUT, VIDIOC_S_OUTPUT
• 7.37. ioctl VIDIOC_G_PARM, VIDIOC_S_PARM
• 7.38. ioctl VIDIOC_G_PRIORITY, VIDIOC_S_PRIORITY
• 7.39. ioctl VIDIOC_G_SELECTION, VIDIOC_S_SELECTION
• 7.40. ioctl VIDIOC_G_SLICED_VBI_CAP
• 7.41. ioctl VIDIOC_G_STD, VIDIOC_S_STD, VIDIOC_SUBDEV_G_STD, VIDIOC_SUBDEV_S_STD
• 7.42. ioctl VIDIOC_G_TUNER, VIDIOC_S_TUNER
• 7.43. ioctl VIDIOC_LOG_STATUS
• 7.44. ioctl VIDIOC_OVERLAY
• 7.45. ioctl VIDIOC_PREPARE_BUF
• 7.46. ioctl VIDIOC_QBUF, VIDIOC_DQBUF
• 7.47. ioctl VIDIOC_QUERYBUF
• 7.48. ioctl VIDIOC_QUERYCAP
• 7.49. ioctls VIDIOC_QUERYCTRL, VIDIOC_QUERY_EXT_CTRL and VIDIOC_QUERYMENU
• 7.50. ioctl VIDIOC_QUERY_DV_TIMINGS
• 7.51. ioctl VIDIOC_QUERYSTD, VIDIOC_SUBDEV_QUERYSTD
• 7.52. ioctl VIDIOC_REQBUFS
• 7.53. ioctl VIDIOC_S_HW_FREQ_SEEK
• 7.54. ioctl VIDIOC_STREAMON, VIDIOC_STREAMOFF
• 7.55. ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL
• 7.56. ioctl VIDIOC_SUBDEV_ENUM_FRAME_SIZE
• 7.57. ioctl VIDIOC_SUBDEV_ENUM_MBUS_CODE
• 7.58. ioctl VIDIOC_SUBDEV_G_CROP, VIDIOC_SUBDEV_S_CROP
• 7.59. ioctl VIDIOC_SUBDEV_G_FMT, VIDIOC_SUBDEV_S_FMT
• 7.60. ioctl VIDIOC_SUBDEV_G_FRAME_INTERVAL, VIDIOC_SUBDEV_S_FRAME_INTERVAL
• 7.61. ioctl VIDIOC_SUBDEV_G_SELECTION, VIDIOC_SUBDEV_S_SELECTION
• 7.62. ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT
• 7.63. V4L2 mmap()
• 7.64. V4L2 munmap()
• 7.65. V4L2 open()
• 7.66. V4L2 poll()
• 7.67. V4L2 read()
• 7.68. V4L2 select()
• 7.69. V4L2 write()