Hello,
I'm trying to understand how to imeplement v4l driver using videobuf.
The videobuf documentation if very helpful.
When the documentation refers to " I/O stream" , does it also include
the read/write operation or only streaming I/O method ?
In case I am using only read/write, do I need to implement all these 4 APIs:
struct videobuf_queue_ops {
int (*buf_setup)(struct videobuf_queue *q,
unsigned int *count, unsigned int *size);
int (*buf_prepare)(struct videobuf_queue *q,
struct videobuf_buffer *vb,
enum v4l2_field field);
void (*buf_queue)(struct videobuf_queue *q,
struct videobuf_buffer *vb);
void (*buf_release)(struct videobuf_queue *q,
struct videobuf_buffer *vb);
};
Are these APIs relevant for both read/write and streaminf I/O ?
Best Regards,
Ran
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