class

V4L2::Stream(TYPE, FORMAT)

Inherits Reference < Object

Represents a "stream", defined by a V4L2::Buffer::Type and V4L2::Format.

See V4L2::Streams for all supported streams.

Constructors

new(device : Device)

Initializes the stream for the V4L2 device.

buffers

Returns the allocated buffers for the stream. Raises an UninitializedError if the buffers have not been allocated.

crop

Queries the current set crop.

crop=(rect : Rect)

Sets the current crop.

crop_capabilities

Queries the crop capabilities of the stream.

each_format

Enumerates over each format supported by the stream.

format

Returns the current format.

format

Yields a new format and sets the current format.

format=(new_format : FORMAT)

Sets the current format.

malloc_buffers!(count : UInt32, length : UInt32) : self

Requests user malloced buffers of the given count and length for the stream.

mmap_buffers!(count : UInt32) : self

Requests memory-mapped buffers of the given count for the stream.

queue

Returns the buffer queue for the stream. Raises an UninitializedError if the buffer queue has not been initialized.