dmaheap

Documentation

Overview

Package dmaheap provides buffer allocation via Linux dma-buf heaps (/dev/dma_heap/system). This is a fallback allocator when AIDL/HIDL gralloc services are unavailable.

Buffers allocated this way are plain dma-buf FDs without gralloc metadata. They work for camera HALs that can import raw dma-buf FDs but may not work with HALs that require gralloc-specific handle formats.

Index

• func Allocate(size uint64) (int32, error)
• func AllocateUncached(size uint64) (int32, error)

Functions

func Allocate

func Allocate(size uint64) (int32, error)

Allocate allocates a dma-buf of the given size via /dev/dma_heap/system. Returns the file descriptor for the dma-buf. The caller is responsible for closing the FD.

func AllocateUncached

func AllocateUncached(size uint64) (int32, error)

AllocateUncached allocates an uncached dma-buf.