Method

VipsSourcemap

Declaration [src] 

void*
vips_source_map (
  VipsSource* source,
  size_t* length
)

Description [src]

Map the source entirely into memory and return a pointer to the start. If length is non-NULL, the source size is written to it.

This operation can take a long time. Use vips_source_is_mappable() to check if a source can be mapped efficiently.

The pointer is valid for as long as source is alive.

Parameters

length

Type: size_t*

Return the file length here, or NULL.

The data is owned by the caller of the method.

Return value

Type: void*

A pointer to the start of the file contents, or NULL on error.

The returned data is owned by the instance.
The return value can be NULL.