class V4L2::AllocatedBuffer

• V4L2::AllocatedBuffer
• Reference
• Object

Overview

Represents a buffer allocated and controlled by the application, which the V4L2 kernel API will write data into.

Defined in:

v4l2/allocated_buffer.cr

Constructors

• .malloc(length : UInt32) : AllocatedBuffer

  Mallocs a new buffer of the given length.

• .mmap(fd : Int32, offset : UInt32, length : UInt32) : AllocatedBuffer

  Memory-maps a new buffer using the given file descriptor, offset, and length.

• .new(memory : Memory, pointer : Pointer(UInt8), length : UInt32)

  Initializes an allocated buffer, with the specified memory type, pointer, and length.

Instance Method Summary

• #finalize

  De-allocates the buffer.

• #length : UInt32

  The length of the allocated buffer.

• #memory : Memory

  The memory type of the allocated buffer.

• #pointer : Pointer(UInt8)

  The raw pointer to the allocated buffer.

• #to_slice : Slice(UInt8)

  Returns a slice to the allocated buffer.

• #to_unsafe : Pointer(UInt8)

  Returns a raw pointer to the allocated buffer.

Constructor Detail

Instance Method Detail