vaudio_lyra

Speech codec plugin for voice that uses Lyra, the new voice codec that achieves the best quality-to-bitrate ratio.

This was written for usage with TFORevive, and so may need adjustments for use with other Source Engine games (missing bool bFinal param).

Compile (on Windows)

You have to have Bazelisk installed, and also MSVC and Python (that has numpy and six installed with pip). Replace C:\\Python311\\python.exe below with your Python installation.

First run the following to convert model files into a header file that will be bundled into the DLL:

C:\\Python311\\python.exe .\models_to_header.py

Then to compile:

bazel build -c opt --action_env PYTHON_BIN_PATH="C:\\Python311\\python.exe" vaudio_lyra:vaudio_lyra

You can replace -c opt with -c dbg to build in debug mode (with asserts enabled).

Final file is at ./bazel-bin/vaudio_lyra/vaudio_lyra.dll

Compiling CLI examples

Lyra comes with two sample CLI programs to test out encode/decode, you can compile and use them as follows:

bazel build -c opt --action_env PYTHON_BIN_PATH="C:\\Python311\\python.exe" lyra/cli_example:encoder_main

bazel-bin/lyra/cli_example/encoder_main.exe --input_path=lyra/testdata/sample1_16kHz.wav --output_dir=%temp% --bitrate=9200
bazel-bin/lyra/cli_example/decoder_main.exe --encoded_path=%temp%/sample1_16kHz.lyra --output_dir=%temp%/ --bitrate=9200

Running unit tests

Running the built-in unit tests of Lyra might be useful, as we did some changes to statically build model files into the binaries themselves. So you can run them with:

bazel test --action_env PYTHON_BIN_PATH="C:\\Python311\\python.exe" //lyra:all

We don't currently have any vaudio_lyra-specific unit tests.