diff options
Diffstat (limited to 'Documentation/video4linux/videobuf')
-rw-r--r-- | Documentation/video4linux/videobuf | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/Documentation/video4linux/videobuf b/Documentation/video4linux/videobuf index 17a1f9abf260..1d00d7f15b8f 100644 --- a/Documentation/video4linux/videobuf +++ b/Documentation/video4linux/videobuf | |||
@@ -247,8 +247,6 @@ calls. The relevant helper functions are: | |||
247 | int nonblocking); | 247 | int nonblocking); |
248 | int videobuf_streamon(struct videobuf_queue *q); | 248 | int videobuf_streamon(struct videobuf_queue *q); |
249 | int videobuf_streamoff(struct videobuf_queue *q); | 249 | int videobuf_streamoff(struct videobuf_queue *q); |
250 | int videobuf_cgmbuf(struct videobuf_queue *q, struct video_mbuf *mbuf, | ||
251 | int count); | ||
252 | 250 | ||
253 | So, for example, a VIDIOC_REQBUFS call turns into a call to the driver's | 251 | So, for example, a VIDIOC_REQBUFS call turns into a call to the driver's |
254 | vidioc_reqbufs() callback which, in turn, usually only needs to locate the | 252 | vidioc_reqbufs() callback which, in turn, usually only needs to locate the |
@@ -258,10 +256,7 @@ boilerplate in a lot of V4L2 drivers. | |||
258 | 256 | ||
259 | The vidioc_streamon() and vidioc_streamoff() functions will be a bit more | 257 | The vidioc_streamon() and vidioc_streamoff() functions will be a bit more |
260 | complex, of course, since they will also need to deal with starting and | 258 | complex, of course, since they will also need to deal with starting and |
261 | stopping the capture engine. videobuf_cgmbuf(), called from the driver's | 259 | stopping the capture engine. |
262 | vidiocgmbuf() function, only exists if the V4L1 compatibility module has | ||
263 | been selected with CONFIG_VIDEO_V4L1_COMPAT, so its use must be surrounded | ||
264 | with #ifdef directives. | ||
265 | 260 | ||
266 | Buffer allocation | 261 | Buffer allocation |
267 | 262 | ||