Discussion of API enhancements
From V4LWiki
This page gathers ideas, suggestions, and drafts for V4L API enhancements. Discussion can take place on the V4L mailing list.
Contents |
[edit] Ideas
- [Your idea here]
[edit] Drafts
[edit] VIDIOC_ENUM_FRAME_FORMATS
- Topic
- Draft for a new ioctl that allows frame format enumeration
- Reason for enhancement
- The V4L2 API lacks a way for applications to enumerate frame rates and other frame format related information. Enumerating supported frame rates, formats, and resolutions is required for webcam applications. (See discussion on video4linux-list: Thread: Frame rate enumeration ioctl)
- Date/Author
- 2006-05-31, Martin Rubli
- Mailing list
- RFC: ioctl for frame format enumeration
- Download draft
- HTML, Text only/Wiki
- Status
- replaced by VIDIOC_ENUM_FRAMESIZES and VIDIOC_ENUM_FRAMEINTERVALS
[edit] VIDIOC_ENUM_FRAMESIZES, VIDIOC_ENUM_FRAMEINTERVALS
- Topic
- Draft for two new ioctls that allow frame size and frame interval enumeration
- Reason for enhancement
- The V4L2 API lacks a way for applications to enumerate frame rates and other frame format related information. Enumerating supported frame rates, formats, and resolutions is required for webcam applications. (See discussion on video4linux-list: Thread: Frame rate enumeration ioctl)
- Date/Author
- 2006-07-06, Martin Rubli
- Mailing list
- RFC: ioctls for frame format enumeration (2nd version)
- Download draft
- Status
- Implemented by the Linux UVC driver, to be submitted to V4L2
- Usage sample
- frmfmtenum.c
