| v4l2 plugins |
| ============ |
| |
| The idea is a bit the same as the idea for the v4l1 plugins. We want |
| one generic v4l2element, and a few child objects (probably only two: |
| v4l2src and v4l2sink): |
| |
| /-------- v4l2src |
| v4l2element ---= |
| \-------- v4l2sink |
| |
| Both v4l2src and v4l2sink have a uncompressed and a compressed |
| recording-/playback-mode. Since this is all part of v4l2, the 'client' |
| of these elements, i.e. an application using v4l2src/v4l2sink, will |
| hardly notice this. All capsnego stuff is done inside, and the plugin |
| knows which formats are compressed and which are not. |
| |
| Please note that the v4l1 and the v4l2 plugins are *not* compatible |
| concerning properties. Naming has been kept the same where possible, |
| but in some cases, properties had to be removed or added to make |
| full use of v4l2. |
| |
| V4L2 API: http://linux.bytesex.org/v4l2/. |
| http://v4l2spec.bytesex.org/ |
| /usr/include/linux/videodev2.h or |
| |
| Kernel patches available from |
| http://dl.bytesex.org/patches/. |
| |
| Articles: |
| http://lwn.net/Articles/203924/ |
| |
