diff options
Diffstat (limited to 'include/media/videobuf2-core.h')
-rw-r--r-- | include/media/videobuf2-core.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 3253bd2f6fee..4b6a9d2ea372 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -386,6 +386,12 @@ struct vb2_buffer { * the buffer contents will be ignored anyway. * @buf_cleanup: called once before the buffer is freed; drivers may * perform any additional cleanup; optional. + * @prepare_streaming: called once to prepare for 'streaming' state; this is + * where validation can be done to verify everything is + * okay and streaming resources can be claimed. It is + * called when the VIDIOC_STREAMON ioctl is called. The + * actual streaming starts when @start_streaming is called. + * Optional. * @start_streaming: called once to enter 'streaming' state; the driver may * receive buffers with @buf_queue callback * before @start_streaming is called; the driver gets the @@ -405,6 +411,10 @@ struct vb2_buffer { * callback by calling vb2_buffer_done() with either * %VB2_BUF_STATE_DONE or %VB2_BUF_STATE_ERROR; may use * vb2_wait_for_all_buffers() function + * @unprepare_streaming:called as counterpart to @prepare_streaming; any claimed + * streaming resources can be released here. It is + * called when the VIDIOC_STREAMOFF ioctls is called or + * when the streaming filehandle is closed. Optional. * @buf_queue: passes buffer vb to the driver; driver may start * hardware operation on this buffer; driver should give * the buffer back by calling vb2_buffer_done() function; @@ -432,8 +442,10 @@ struct vb2_ops { void (*buf_finish)(struct vb2_buffer *vb); void (*buf_cleanup)(struct vb2_buffer *vb); + int (*prepare_streaming)(struct vb2_queue *q); int (*start_streaming)(struct vb2_queue *q, unsigned int count); void (*stop_streaming)(struct vb2_queue *q); + void (*unprepare_streaming)(struct vb2_queue *q); void (*buf_queue)(struct vb2_buffer *vb); @@ -641,8 +653,10 @@ struct vb2_queue { u32 cnt_queue_setup; u32 cnt_wait_prepare; u32 cnt_wait_finish; + u32 cnt_prepare_streaming; u32 cnt_start_streaming; u32 cnt_stop_streaming; + u32 cnt_unprepare_streaming; #endif }; |