// 驱动需要明确定义的函数,用于操作vb2_queue[include/media/videobuf2-core.h]struct vb2_ops{// 设置缓冲区队列相关参数int(*queue_setup)(struct vb2_queue*q,conststruct v4l2_format*fmt,unsigned int*num_buffers,unsigned int*num_planes,unsigned int sizes[],void*alloc_ctxs[]);// 在调用ioctl等待...
// 驱动需要明确定义的函数,用于操作vb2_queue[include/media/videobuf2-core.h]struct vb2_ops{// 设置缓冲区队列相关参数int(*queue_setup)(struct vb2_queue*q,conststruct v4l2_format*fmt,unsigned int*num_buffers,unsigned int*num_planes,unsigned int sizes[],void*alloc_ctxs[]);// 在调用ioctl等待...
intvb2_core_reqbufs(structvb2_queue *q,enumvb2_memory memory,unsignedint*count){/*部分内容省略*/__vb2_queue_cancel(q);//清理任何缓冲的准备或排队队列状态memset(q->alloc_devs,0,sizeof(q->alloc_devs));//初始化清零q->memory = memory;//指向内存ret =call_qop(q, queue_setup, q, &num_...
queue_setup line 491, sizes[1]= 1044480, w:1920, h:1080. depth 8, 4, 0 vb2_buffer_done line 894.y-addr = 0xc3090000, uv-addr = 0xc328e000.pic-cnt 0. vb2_buffer_done line 894.y-addr = 0xc338d000, uv-addr = 0xc358b000.pic-cnt 1. vb2_buffer_done line 894.y-addr = ...
unsigned int index;---当前buffer在vb2_queue上的序号,vb2_queue->bufs[index]可以找到此缓存。 unsigned int type;---v4l2_buf_type类型,用户空间设定内存的类型。 unsigned int memory;---vb2_memory类型,mmap/userptr/dmabuf三者之一,表示缓存处理方式。 unsigned int num_planes; struct vb2_plane planes[...
msh />sample_virvi ===. Auto Test count : 0. (MaxCount==1). ===. queue_setup line 491, sizes[0]= 2088960, w:1920, h:1080. depth 8, 4, 0 queue_setup line 491, sizes[1]= 1044480, w:1920, h:1080. depth 8, 4, 0 vb2_buffer_done line 894...
buf_init在分配缓冲区之后调用或获取了新的USERPTR之后调用(in MMAP case),驱动需要完成一些缓冲区初始化的工作,若初始化失败,则返回不为0的数,此时queue_setup将失败,一般用不到。 buf_prepare缓冲区每次从用户空间入队都需要调用或被ioctl的VIDIOC_PREPARE_BUF命令调用,驱动需要执行一些初始化工作或获取、修改缓冲区...
.queue_setup = queue_setup, .buf_init = buffer_init, .buf_prepare = buffer_prepare, .buf_finish = buffer_finish, .buf_cleanup = buffer_cleanup, .buf_queue = buffer_queue, .start_streaming= start_streaming, .stop_streaming = stop_streaming, ...
(struct vb2_queue *q) { struct v4l2_fh *fh = q->owner; if (fh && fh->vdev) return v4l_enable_media_source(fh->vdev); return 0; } EXPORT_SYMBOL_GPL(v4l_vb2q_enable_media_source); int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev *src_sd, struct media_pad *sink, u32...
* The vb2 queue ops. */ static const struct vb2_ops skel_qops = { .queue_setup = queue_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .start_streaming = start_streaming, .stop_streaming = stop_streaming, .wait_prepare = vb2_ops_wait_prepare, ...