Add Mac compatability.

[johnrtipton]

DRAFT:
Add Mac compatibility, I need to do some cleanup still, this is a rough implementation.

[Traxmaxx]

What worked for me on MacOS was

import platform
[...]
self.lib_espeak = ctypes.cdll.LoadLibrary("libespeak-ng.{}".format("so.1" if platform.uname()[0] != "Darwin" else "dylib"))

Still need to test on linux, will do later today
This change allowed me to actually get voice working on MacOS somewhat, but I now run into the following error:

Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 0000 for phoneme 'f?'
Invalid instruction 4801 for phoneme 'f?'
Invalid instruction 0007 for phoneme '�O�'
Invalid instruction 7878 for phoneme '�O�'
Invalid instruction 5a4b for phoneme '�O�'
Invalid instruction 0000 for phoneme '�O�'
Invalid instruction 0028 for phoneme '�O�'
Invalid instruction 0000 for phoneme '�O�'
Invalid instruction 0000 for phoneme '�O�'
Invalid instruction 0000 for phoneme '�O�'
Invalid instruction 0000 for phoneme '�O�'
Invalid instruction 0000 for phoneme '�O�'
Invalid instruction 00fa for phoneme '�O�'
Invalid instruction 000c for phoneme '�O�'
Invalid instruction 0003 for phoneme '�O�'

YMMV

[Traxmaxx]

Installing espeak-ng through homebrew and doing the mentioned change above, espeak is not directly crashing and works for some time until I run into mentioned error. I'm still investigating what is happening there.
Any clues?

[Traxmaxx]

I did self.libc = ctypes.cdll.LoadLibrary("libc.{}".format("so.6" if platform.uname()[0] != "Darwin" else "dylib"))
to support both

[fonix232]

I've been doing some refactor locally, which I think could go into this PR.

Instead of relying on manually compiled and installed libraries, my suggestion would be an init script that:

1. Enters a Python venv
2. Checks for libwhisper, if not found, pulls the git repo, builds it, and copies the appropriate files into a local path
3. Checks for libespeak-ng, if not found, pulls the git repo, builds it, and copies the appropriate files into a local path
4. Checks for llama.cpp, and you guessed it right, if not found, pulls the git repo, builds it, and copies the appropriate files into a local path
5. Installs all Python dependencies
6. Starts the main app

Optionally it could also prompt for installing the make/cmake/etc. build tools as needed, though with all the different distros, this might be a task a smidge too big.

I'd also go for masking ctypes.cdll.LoadLibrary with a custom method that takes care of the dylib or so checking (note that e.g. libwhisper still builds a .so file on macOS, so on Darwin platforms it's best to check first for dylib then for so and only if neither are found, throw the exception).

[fonix232]

@dnhkng please see my above comment to expand on the discussion under #11

[dnhkng]

We now use the espeak-ng binary, as it resolves the segfault issues, so I am closing this,