ioctl VIDIOC_ENUM_DV_PRESETS &manvol; VIDIOC_ENUM_DV_PRESETS Enumerate supported Digital Video presets int ioctl int fd int request struct v4l2_dv_enum_preset *argp fd &fd; request VIDIOC_ENUM_DV_PRESETS argp To query the attributes of a DV preset, applications initialize the index field and zero the reserved array of &v4l2-dv-enum-preset; and call the VIDIOC_ENUM_DV_PRESETS ioctl with a pointer to this structure. Drivers fill the rest of the structure or return an &EINVAL; when the index is out of bounds. To enumerate all DV Presets supported, applications shall begin at index zero, incrementing by one until the driver returns EINVAL. Drivers may enumerate a different set of DV presets after switching the video input or output. &cs-str; __u32 index Number of the DV preset, set by the application. __u32 preset This field identifies one of the DV preset values listed in . __u8 name[24] Name of the preset, a NUL-terminated ASCII string, for example: "720P-60", "1080I-60". This information is intended for the user. __u32 width Width of the active video in pixels for the DV preset. __u32 height Height of the active video in lines for the DV preset. __u32 reserved[4] Reserved for future extensions. Drivers must set the array to zero. &cs-str; Preset Preset value Description V4L2_DV_INVALID 0 Invalid preset value. V4L2_DV_480P59_94 1 720x480 progressive video at 59.94 fps as per BT.1362. V4L2_DV_576P50 2 720x576 progressive video at 50 fps as per BT.1362. V4L2_DV_720P24 3 1280x720 progressive video at 24 fps as per SMPTE 296M. V4L2_DV_720P25 4 1280x720 progressive video at 25 fps as per SMPTE 296M. V4L2_DV_720P30 5 1280x720 progressive video at 30 fps as per SMPTE 296M. V4L2_DV_720P50 6 1280x720 progressive video at 50 fps as per SMPTE 296M. V4L2_DV_720P59_94 7 1280x720 progressive video at 59.94 fps as per SMPTE 274M. V4L2_DV_720P60 8 1280x720 progressive video at 60 fps as per SMPTE 274M/296M. V4L2_DV_1080I29_97 9 1920x1080 interlaced video at 29.97 fps as per BT.1120/SMPTE 274M. V4L2_DV_1080I30 10 1920x1080 interlaced video at 30 fps as per BT.1120/SMPTE 274M. V4L2_DV_1080I25 11 1920x1080 interlaced video at 25 fps as per BT.1120. V4L2_DV_1080I50 12 1920x1080 interlaced video at 50 fps as per SMPTE 296M. V4L2_DV_1080I60 13 1920x1080 interlaced video at 60 fps as per SMPTE 296M. V4L2_DV_1080P24 14 1920x1080 progressive video at 24 fps as per SMPTE 296M. V4L2_DV_1080P25 15 1920x1080 progressive video at 25 fps as per SMPTE 296M. V4L2_DV_1080P30 16 1920x1080 progressive video at 30 fps as per SMPTE 296M. V4L2_DV_1080P50 17 1920x1080 progressive video at 50 fps as per BT.1120. V4L2_DV_1080P60 18 1920x1080 progressive video at 60 fps as per BT.1120. &return-value; EINVAL The &v4l2-dv-enum-preset; index is out of bounds.