1The only capture method implemented currently is mmap. 2 3Missing V4L2 ioctls to be implemented at library: 4 Methods to change controls at V4L devices: 5 VIDIOC_QUERYCTRL 6 VIDIOC_QUERYMENU 7 VIDIOC_G_CTRL 8 VIDIOC_S_CTRL 9 VIDIOC_TRY_EXT_CTRLS 10 VIDIOC_G_EXT_CTRLS 11 VIDIOC_S_EXT_CTRLS 12 13 Tuner control methods: 14 VIDIOC_G_TUNER 15 VIDIOC_S_TUNER 16 VIDIOC_S_FREQUENCY 17 VIDIOC_G_FREQUENCY 18 19 Crop methods: 20 VIDIOC_CROPCAP 21 VIDIOC_S_CROP 22 VIDIOC_G_CROP 23 24 Audio input/output: 25 VIDIOC_ENUMAUDIO 26 VIDIOC_ENUMAUDOUT 27 VIDIOC_G_AUDIO 28 VIDIOC_S_AUDIO 29 VIDIOC_G_AUDOUT 30 VIDIOC_S_AUDOUT 31 32 Video output: 33 VIDIOC_ENUMOUTPUT 34 VIDIOC_G_OUTPUT 35 VIDIOC_S_OUTPUT 36 37 Priority control: 38 VIDIOC_G_PRIORITY 39 VIDIOC_S_PRIORITY 40 41 Sliced VBI control: 42 VIDIOC_G_SLICED_VBI_CAP 43 44 The received video STD: 45 VIDIOC_QUERYSTD 46 47 Streaming parameters: 48 VIDIOC_G_PARM 49 VIDIOC_S_PARM 50 51 Output modulator (generally for TV): 52 VIDIOC_G_MODULATOR 53 VIDIOC_S_MODULATOR 54 55 Those methods are brand new. Not yet used on drivers: 56 VIDIOC_ENUM_FRAMEINTERVALS 57 VIDIOC_ENUM_FRAMESIZES 58 59 Overlay is somewhat legacy stuff those days: 60 VIDIOC_OVERLAY 61 VIDIOC_G_FBUF 62 VIDIOC_S_FBUF 63 64 Those are unlikely to be implemented at API (legacy stuff, debug stuff or private): 65 VIDIOC_G_JPEGCOMP 66 VIDIOC_S_JPEGCOMP 67 VIDIOC_LOG_STATUS 68 VIDIOC_PRIVATE 69 VIDIOC_OVERLAY_OLD 70 VIDIOC_S_PARM_OLD 71 VIDIOC_S_CTRL_OLD 72 VIDIOC_G_AUDIO_OLD 73 VIDIOC_G_AUDOUT_OLD 74 VIDIOC_CROPCAP_OLD 75 76Also missing V4L1 mmap method: 77 VIDIOCGMBUF 78 79 This method is interesting only to be used by driver-test to check 80API compliance to the legacy method. 81