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#!/bin/bash

# This script is an example of evaluate TTS models with objective metrics reported in ZipVoice-Dialog paper.

# Add project root to PYTHONPATH
export PYTHONPATH=../../:$PYTHONPATH

# Set bash to 'debug' mode, it will exit on:
# -e 'error', -u 'undefined variable', -o ... 'error in pipeline', -x 'print commands',
set -e
set -u
set -o pipefail

stage=1
stop_stage=6

download_dir=download/

# Uncomment this line to use HF mirror
# export HF_ENDPOINT=https://hf-mirror.com

if [ ${stage} -le 1 ] && [ ${stop_stage} -ge 1 ]; then
      echo "Stage 1: Download test sets (test-dialog)"
      hf_repo=k2-fsa/TTS_eval_datasets
      mkdir -p ${download_dir}/
      file=dialog_testset.tar.gz
      echo "Downloading ${file}..."
      huggingface-cli download \
            --repo-type dataset \
            --local-dir ${download_dir}/ \
            ${hf_repo} \
            ${file}
      echo "Extracting ${file}..."
      tar -xzf ${download_dir}/${file} -C ${download_dir}/
fi


if [ ${stage} -le 2 ] && [ ${stop_stage} -ge 2 ]; then
      echo "Stage 2: Download all required evaluation models"
      mkdir -p ${download_dir}/tts_eval_models
      mkdir -p ${download_dir}
      huggingface-cli download \
        --local-dir ${download_dir}/tts_eval_models \
        ${hf_repo}
fi

if [ ${stage} -le 3 ] && [ ${stop_stage} -ge 3 ]; then
      echo "Stage 3: Inference with the pre-trained ZipVoice model from huggingface"

      for testset in test_dialog_en test_dialog_zh; do 
        if [ "$testset" = "test_dialog_en" ]; then
                test_tsv=${download_dir}/dialog_testset/en/test.tsv
        elif [ "$testset" = "test_dialog_zh" ]; then
                test_tsv=${download_dir}/dialog_testset/zh/test.tsv
        else
                echo "Error: unknown testset ${testset}" >&2
                exit 1
        fi
        echo "Inference on tetset ${testset}..."
        python3 -m zipvoice.bin.infer_zipvoice_dialog \
                --model-name zipvoice_dialog \
                --test-list ${test_tsv} \
                --res-dir results/${testset}
      done
fi


if [ ${stage} -le 4 ] && [ ${stop_stage} -ge 4 ]; then
      echo "Stage 4: Evaluation on test-dialog-en"
      model_path=${download_dir}/tts_eval_models
      wav_path=results/test_dialog_en
      test_tsv=${download_dir}/dialog_testset/en/test.tsv

      python3 -m zipvoice.eval.speaker_similarity.cpsim \
            --wav-path ${wav_path} \
            --test-list ${test_tsv} \
            --model-dir ${model_path} 

      python3 -m zipvoice.eval.wer.dialog \
            --wav-path ${wav_path} \
            --test-list ${test_tsv} \
            --model-dir ${model_path} \
            --lang en

      # cpWER mode: will only compute WER and cpWER 
      # for speech less than 30s
      python3 -m zipvoice.eval.wer.dialog \
            --wav-path ${wav_path} \
            --test-list ${test_tsv} \
            --model-dir ${model_path} \
            --lang en \
            --cpwer

      python3 -m zipvoice.eval.mos.utmos \
            --wav-path ${wav_path} \
            --model-dir ${model_path} 
fi


if [ ${stage} -le 5 ] && [ ${stop_stage} -ge 5 ]; then
      echo "Stage 5: Evaluation on test-dialog-zh"
      model_path=${download_dir}/tts_eval_models
      wav_path=results/test_dialog_zh
      test_tsv=${download_dir}/dialog_testset/zh/test.tsv

      python3 -m zipvoice.eval.speaker_similarity.cpsim \
            --wav-path ${wav_path} \
            --test-list ${test_tsv} \
            --model-dir ${model_path} 

      python3 -m zipvoice.eval.wer.dialog \
            --wav-path ${wav_path} \
            --test-list ${test_tsv} \
            --model-dir ${model_path} \
            --lang zh

      python3 -m zipvoice.eval.mos.utmos \
            --wav-path ${wav_path} \
            --model-dir ${model_path} 
fi