#!/bin/bash
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

. ./path.sh
set -e

#######################################################################
# stage 0: data prepare, including voxceleb1 download and generate {train,dev,enroll,test}.csv
#          voxceleb2 data is m4a format, so we need convert the m4a to wav yourselves with the script local/convert.sh
# stage 1: train the speaker identification model
# stage 2: test speaker identification 
# stage 3: (todo)extract the training embeding to train the LDA and PLDA
######################################################################

# the vox2 dataset is stored in m4a format, we need to convert the audio from m4a to wav yourself
# and put all of them to ${MAIN_ROOT}/datasets/vox2
# we will find the wav from ${MAIN_ROOT}/datasets/vox1/{dev,test}/wav and ${MAIN_ROOT}/datasets/vox2/wav

stage=0
stop_stage=50

# data directory
# if we set the variable ${dir}, we will store the wav info to this directory
# otherwise, we will store the wav info to data/vox1 and data/vox2 directory respectively
# vox2 wav path, we must convert the m4a format to wav format    
dir=data/                                 # data info directory   

exp_dir=exp/ecapa-tdnn-vox12-big/            # experiment directory
conf_path=conf/ecapa_tdnn.yaml          
gpus=0,1,2,3

source ${MAIN_ROOT}/utils/parse_options.sh || exit 1;

mkdir -p ${exp_dir}

if [ $stage -le 0 ] && [ ${stop_stage} -ge 0 ]; then 
     # stage 0: data prepare for vox1 and vox2, vox2 must be converted from m4a to wav
     bash ./local/data.sh ${dir} ${conf_path}|| exit -1;
fi

if [ $stage -le 1 ] && [ ${stop_stage} -ge 1 ]; then
     # stage 1: train the speaker identification model
     CUDA_VISIBLE_DEVICES=${gpus} bash ./local/train.sh ${dir} ${exp_dir} ${conf_path} 
fi

if [ $stage -le 2 ] && [ ${stop_stage} -ge 2 ]; then
     # stage 2: get the speaker verification scores with cosine function
     #          now we only support use cosine to get the scores
     CUDA_VISIBLE_DEVICES=0 bash ./local/test.sh ${dir} ${exp_dir} ${conf_path}
fi

# if [ $stage -le 3 ]; then
#      # stage 3: extract the training embeding to train the LDA and PLDA
#      # todo: extract the training embedding
# fi