Could someone tell me what the *p_dst parameter is in FileAccess::get_buffer()?

0 votes

What should I place in *p_dst if all I have is the p_length?

uint64_t FileAccess::get_buffer(uint8_t *p_dst, uint64_t p_length)
Godot version 3.5 beta custom build (working on a module in c++)
in Engine by (198 points)

1 Answer

0 votes

p_dst is a pointer to the buffer in which the data in the file is to be stored as bytes. Create an empty buffer of length p_length and pass it to the function.

by (1,305 points)

I see I think I get it but I'm no sure. I'm trying to replace this series of statements that were written for a GDNative plugin. GDNative plugins have access to File::get_buffer which only requires a p_length. Here is the original code:

/* Read and populate the data */
PoolByteArray arr = p->file->get_buffer(len);
PoolByteArray::Read r = arr.read();
memcpy(zBuf, r.ptr(), len);

Here is what I did, but I'm pretty sure it's wrong:

 /* Read and populate the data */
PoolVector<uint8_t> arr;
arr.resize(len);
PoolVector<uint8_t>::Write arr_w = arr.write();
p->file->get_buffer(arr_w.ptr(), len);
PoolByteArray::Read r = arr.read();
memcpy(zBuf, r.ptr(), iAmt);

What do you think?

[EDIT]
Aaaaactually there seems to be _File class in core_bind.h, which I think is the class that is exposed to GDNative and GDscriptright?

by (198 points)
edited by
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