cffi library 'libsndfile.dll' has no function, constant or global variable named 'sf_wchar_open'

[alpinedelight]

Firstly, wanted to start with saying thanks @bastibe for all your work and dedication

I'm trying to run soundfile on Windows on ARM64, I get the following error when calling sf.read function: Error processing input: cffi library 'libsndfile.dll' has no function, constant or global variable named 'sf_wchar_open'. Looking at dumpbin.exe /exports I can see libsndfile.dll (ARM64) contains sf_wchar_open, and creating a little test program I can call the function via cffi successfully. I've tried reinstalling soundfile and cffi to no avail - I should mention pip install didn't deploy the DLL, and I had to place it manually. Appreciate any help/thoughts.

import cffi
import os

ffi = cffi.FFI()

ffi.cdef("""
    typedef struct SNDFILE_tag SNDFILE;
    typedef struct SF_INFO {
        long long frames;
        int samplerate;
        int channels;
        int format;
        int sections;
        int seekable;
    } SF_INFO;
    
    SNDFILE* sf_wchar_open(const wchar_t* path, int mode, SF_INFO* sfinfo);
""")

def load_dll_and_test():
    try:
        dll_path = "libsndfile_arm64.dll"
        lib = ffi.dlopen(dll_path)
        print(f"Successfully loaded {dll_path}")
        
        sfinfo = ffi.new("SF_INFO *")
        
        file_path = "test.wav"  # Replace with actual file path
        
        wchar_path = ffi.new("wchar_t[]", file_path)
        
        sndfile = lib.sf_wchar_open(wchar_path, 0x10, sfinfo)
        
        if sndfile != ffi.NULL:
            print("Successfully opened audio file")
            print(f"Sample rate: {sfinfo.samplerate}")
            print(f"Channels: {sfinfo.channels}")
            print(f"Frames: {sfinfo.frames}")
        else:
            print("Failed to open audio file")
            
    except Exception as e:
        print(f"Error: {e}")

if __name__ == "__main__":
    load_dll_and_test()

Platform/Version: === CFFI === Version: 1.17.1 === SoundFile === Version: 0.13.1 === Platform === Platform: Windows-11-10.0.26100-SP0 Architecture: ('64bit', 'WindowsPE') Machine: ARM64 Processor: ARMv8 (64-bit) Family 8 Model 1 Revision 201, Qualcomm Technologies Inc Python version: 3.13.5