BufferHandle

typedef struct {...} BufferHandle

Overview

Describes the buffer handle, which is used to transfer and obtain buffer information. The handle contains the file descriptor, size, format, usage, virtual address, shared memory key, physical address, and custom data of the buffer.

Since: 8

Related module: NativeWindow

Header file: buffer_handle.h

Summary

Member Variables

Name	Description
int32_t fd	File descriptor of the buffer. The value -1 means that the buffer is not supported.
int32_t width	Width of the buffer memory, in pixels.
int32_t stride	Stride of the buffer memory, in bytes.
int32_t height	Height of the buffer memory, in pixels.
int32_t size	Size of the buffer memory, in bytes.
int32_t format	Format of the buffer memory. For details about the available options, see OH_NativeBuffer_Format.
uint64_t usage	Usage of the buffer memory, represented as bit flags. For details about the available options, see OH_NativeBuffer_Format.
void* virAddr	Virtual address of the buffer memory.
int32_t key	Shared memory key of the buffer memory.
uint64_t phyAddr	Physical address of the buffer memory.
uint32_t reserveFds	Number of file descriptors for extra data.
uint32_t reserveInts	Number of integer values for extra data.
int32_t reserve[0]	Extra data.