mirror of
https://github.com/modelscope/FunASR
synced 2025-09-15 14:48:36 +08:00
458 lines
17 KiB
C++
458 lines
17 KiB
C++
/**
|
|
* Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights
|
|
* Reserved. MIT License (https://opensource.org/licenses/MIT)
|
|
*/
|
|
/* 2022-2023 by zhaomingwork */
|
|
|
|
// websocket server for asr engine
|
|
// take some ideas from https://github.com/k2-fsa/sherpa-onnx
|
|
// online-websocket-server-impl.cc, thanks. The websocket server has two threads
|
|
// pools, one for handle network data and one for asr decoder.
|
|
// now only support offline engine.
|
|
|
|
#include "websocket-server-2pass.h"
|
|
|
|
#include <thread>
|
|
#include <utility>
|
|
#include <vector>
|
|
#include <chrono>
|
|
context_ptr WebSocketServer::on_tls_init(tls_mode mode,
|
|
websocketpp::connection_hdl hdl,
|
|
std::string& s_certfile,
|
|
std::string& s_keyfile) {
|
|
namespace asio = websocketpp::lib::asio;
|
|
|
|
LOG(INFO) << "on_tls_init called with hdl: " << hdl.lock().get();
|
|
LOG(INFO) << "using TLS mode: "
|
|
<< (mode == MOZILLA_MODERN ? "Mozilla Modern"
|
|
: "Mozilla Intermediate");
|
|
|
|
context_ptr ctx = websocketpp::lib::make_shared<asio::ssl::context>(
|
|
asio::ssl::context::sslv23);
|
|
|
|
try {
|
|
if (mode == MOZILLA_MODERN) {
|
|
// Modern disables TLSv1
|
|
ctx->set_options(
|
|
asio::ssl::context::default_workarounds |
|
|
asio::ssl::context::no_sslv2 | asio::ssl::context::no_sslv3 |
|
|
asio::ssl::context::no_tlsv1 | asio::ssl::context::single_dh_use);
|
|
} else {
|
|
ctx->set_options(asio::ssl::context::default_workarounds |
|
|
asio::ssl::context::no_sslv2 |
|
|
asio::ssl::context::no_sslv3 |
|
|
asio::ssl::context::single_dh_use);
|
|
}
|
|
|
|
ctx->use_certificate_chain_file(s_certfile);
|
|
ctx->use_private_key_file(s_keyfile, asio::ssl::context::pem);
|
|
|
|
} catch (std::exception& e) {
|
|
LOG(INFO) << "Exception: " << e.what();
|
|
}
|
|
return ctx;
|
|
}
|
|
|
|
nlohmann::json handle_result(FUNASR_RESULT result) {
|
|
websocketpp::lib::error_code ec;
|
|
nlohmann::json jsonresult;
|
|
jsonresult["text"] = "";
|
|
|
|
std::string tmp_online_msg = FunASRGetResult(result, 0);
|
|
if (tmp_online_msg != "") {
|
|
LOG(INFO) << "online_res :" << tmp_online_msg;
|
|
jsonresult["text"] = tmp_online_msg;
|
|
jsonresult["mode"] = "2pass-online";
|
|
}
|
|
std::string tmp_tpass_msg = FunASRGetTpassResult(result, 0);
|
|
if (tmp_tpass_msg != "") {
|
|
LOG(INFO) << "offline results : " << tmp_tpass_msg;
|
|
jsonresult["text"] = tmp_tpass_msg;
|
|
jsonresult["mode"] = "2pass-offline";
|
|
}
|
|
|
|
return jsonresult;
|
|
}
|
|
// feed buffer to asr engine for decoder
|
|
void WebSocketServer::do_decoder(
|
|
std::vector<char>& buffer, websocketpp::connection_hdl& hdl,
|
|
nlohmann::json& msg, std::vector<std::vector<std::string>>& punc_cache,
|
|
websocketpp::lib::mutex& thread_lock, bool& is_final, std::string wav_name,
|
|
FUNASR_HANDLE& tpass_online_handle) {
|
|
// lock for each connection
|
|
scoped_lock guard(thread_lock);
|
|
if(!tpass_online_handle){
|
|
LOG(INFO) << "tpass_online_handle is free, return";
|
|
msg["access_num"]=(int)msg["access_num"]-1;
|
|
return;
|
|
}
|
|
try {
|
|
FUNASR_RESULT Result = nullptr;
|
|
int asr_mode_ = 2;
|
|
if (msg.contains("mode")) {
|
|
std::string modeltype = msg["mode"];
|
|
if (modeltype == "offline") {
|
|
asr_mode_ = 0;
|
|
} else if (modeltype == "online") {
|
|
asr_mode_ = 1;
|
|
} else if (modeltype == "2pass") {
|
|
asr_mode_ = 2;
|
|
}
|
|
} else {
|
|
// default value
|
|
msg["mode"] = "2pass";
|
|
asr_mode_ = 2;
|
|
}
|
|
|
|
// loop to send chunk_size 800*2 data to asr engine. TODO: chunk_size need
|
|
// get from client
|
|
while (buffer.size() >= 800 * 2 && !msg["is_eof"]) {
|
|
std::vector<char> subvector = {buffer.begin(), buffer.begin() + 800 * 2};
|
|
buffer.erase(buffer.begin(), buffer.begin() + 800 * 2);
|
|
|
|
try {
|
|
if (tpass_online_handle) {
|
|
Result = FunTpassInferBuffer(tpass_handle, tpass_online_handle,
|
|
subvector.data(), subvector.size(),
|
|
punc_cache, false, msg["audio_fs"],
|
|
msg["wav_format"], (ASR_TYPE)asr_mode_);
|
|
|
|
} else {
|
|
msg["access_num"]=(int)msg["access_num"]-1;
|
|
return;
|
|
}
|
|
} catch (std::exception const& e) {
|
|
LOG(ERROR) << e.what();
|
|
msg["access_num"]=(int)msg["access_num"]-1;
|
|
return;
|
|
}
|
|
if (Result) {
|
|
websocketpp::lib::error_code ec;
|
|
nlohmann::json jsonresult = handle_result(Result);
|
|
jsonresult["wav_name"] = wav_name;
|
|
jsonresult["is_final"] = false;
|
|
if (jsonresult["text"] != "") {
|
|
if (is_ssl) {
|
|
wss_server_->send(hdl, jsonresult.dump(),
|
|
websocketpp::frame::opcode::text, ec);
|
|
} else {
|
|
server_->send(hdl, jsonresult.dump(),
|
|
websocketpp::frame::opcode::text, ec);
|
|
}
|
|
}
|
|
FunASRFreeResult(Result);
|
|
}
|
|
}
|
|
if (is_final) {
|
|
try {
|
|
if (tpass_online_handle) {
|
|
Result = FunTpassInferBuffer(tpass_handle, tpass_online_handle,
|
|
buffer.data(), buffer.size(), punc_cache,
|
|
is_final, msg["audio_fs"],
|
|
msg["wav_format"], (ASR_TYPE)asr_mode_);
|
|
} else {
|
|
msg["access_num"]=(int)msg["access_num"]-1;
|
|
return;
|
|
}
|
|
} catch (std::exception const& e) {
|
|
LOG(ERROR) << e.what();
|
|
msg["access_num"]=(int)msg["access_num"]-1;
|
|
return;
|
|
}
|
|
if(punc_cache.size()>0){
|
|
for (auto& vec : punc_cache) {
|
|
vec.clear();
|
|
}
|
|
}
|
|
if (Result) {
|
|
websocketpp::lib::error_code ec;
|
|
nlohmann::json jsonresult = handle_result(Result);
|
|
jsonresult["wav_name"] = wav_name;
|
|
jsonresult["is_final"] = true;
|
|
if (is_ssl) {
|
|
wss_server_->send(hdl, jsonresult.dump(),
|
|
websocketpp::frame::opcode::text, ec);
|
|
} else {
|
|
server_->send(hdl, jsonresult.dump(),
|
|
websocketpp::frame::opcode::text, ec);
|
|
}
|
|
FunASRFreeResult(Result);
|
|
}
|
|
}
|
|
|
|
} catch (std::exception const& e) {
|
|
std::cerr << "Error: " << e.what() << std::endl;
|
|
}
|
|
msg["access_num"]=(int)msg["access_num"]-1;
|
|
|
|
}
|
|
|
|
void WebSocketServer::on_open(websocketpp::connection_hdl hdl) {
|
|
scoped_lock guard(m_lock); // for threads safty
|
|
try{
|
|
std::shared_ptr<FUNASR_MESSAGE> data_msg =
|
|
std::make_shared<FUNASR_MESSAGE>(); // put a new data vector for new
|
|
// connection
|
|
data_msg->samples = std::make_shared<std::vector<char>>();
|
|
data_msg->thread_lock = std::make_shared<websocketpp::lib::mutex>();
|
|
|
|
data_msg->msg = nlohmann::json::parse("{}");
|
|
data_msg->msg["wav_format"] = "pcm";
|
|
data_msg->msg["audio_fs"] = 16000;
|
|
data_msg->msg["access_num"] = 0; // the number of access for this object, when it is 0, we can free it saftly
|
|
data_msg->msg["is_eof"]=false; // if this connection is closed
|
|
data_msg->punc_cache =
|
|
std::make_shared<std::vector<std::vector<std::string>>>(2);
|
|
// std::vector<int> chunk_size = {5, 10, 5}; //TODO, need get from client
|
|
// FUNASR_HANDLE tpass_online_handle =
|
|
// FunTpassOnlineInit(tpass_handle, chunk_size);
|
|
// data_msg->tpass_online_handle = tpass_online_handle;
|
|
data_map.emplace(hdl, data_msg);
|
|
LOG(INFO) << "on_open, active connections: " << data_map.size();
|
|
}catch (std::exception const& e) {
|
|
std::cerr << "Error: " << e.what() << std::endl;
|
|
}
|
|
}
|
|
|
|
void remove_hdl(
|
|
websocketpp::connection_hdl hdl,
|
|
std::map<websocketpp::connection_hdl, std::shared_ptr<FUNASR_MESSAGE>,
|
|
std::owner_less<websocketpp::connection_hdl>>& data_map) {
|
|
|
|
std::shared_ptr<FUNASR_MESSAGE> data_msg = nullptr;
|
|
auto it_data = data_map.find(hdl);
|
|
if (it_data != data_map.end()) {
|
|
data_msg = it_data->second;
|
|
} else {
|
|
return;
|
|
}
|
|
// scoped_lock guard_decoder(*(data_msg->thread_lock)); //wait for do_decoder
|
|
// finished and avoid access freed tpass_online_handle
|
|
unique_lock guard_decoder(*(data_msg->thread_lock));
|
|
if (data_msg->msg["access_num"]==0 && data_msg->msg["is_eof"]==true) {
|
|
LOG(INFO) << "----------------FunTpassOnlineUninit----------------------";
|
|
FunTpassOnlineUninit(data_msg->tpass_online_handle);
|
|
data_msg->tpass_online_handle = nullptr;
|
|
data_map.erase(hdl);
|
|
}
|
|
|
|
guard_decoder.unlock();
|
|
// remove data vector when connection is closed
|
|
}
|
|
|
|
void WebSocketServer::on_close(websocketpp::connection_hdl hdl) {
|
|
scoped_lock guard(m_lock);
|
|
std::shared_ptr<FUNASR_MESSAGE> data_msg = nullptr;
|
|
auto it_data = data_map.find(hdl);
|
|
if (it_data != data_map.end()) {
|
|
data_msg = it_data->second;
|
|
} else {
|
|
return;
|
|
}
|
|
unique_lock guard_decoder(*(data_msg->thread_lock));
|
|
data_msg->msg["is_eof"]=true;
|
|
guard_decoder.unlock();
|
|
//LOG(INFO) << "on_close, active connections: " << data_map.size();
|
|
}
|
|
|
|
// remove closed connection
|
|
void WebSocketServer::check_and_clean_connection() {
|
|
LOG(INFO)<<"***********begin check_and_clean_connection ****************";
|
|
while(true){
|
|
std::this_thread::sleep_for(std::chrono::milliseconds(5000));
|
|
LOG(INFO) << "run check_and_clean_connection" <<", active connections: " << data_map.size();;
|
|
std::vector<websocketpp::connection_hdl> to_remove; // remove list
|
|
auto iter = data_map.begin();
|
|
while (iter != data_map.end()) { // loop to find closed connection
|
|
websocketpp::connection_hdl hdl = iter->first;
|
|
try{
|
|
if (is_ssl) {
|
|
wss_server::connection_ptr con = wss_server_->get_con_from_hdl(hdl);
|
|
if (con->get_state() != 1) { // session::state::open ==1
|
|
to_remove.push_back(hdl);
|
|
}
|
|
} else {
|
|
server::connection_ptr con = server_->get_con_from_hdl(hdl);
|
|
if (con->get_state() != 1) { // session::state::open ==1
|
|
to_remove.push_back(hdl);
|
|
}
|
|
}
|
|
}
|
|
catch (std::exception const &e)
|
|
{
|
|
// if connection is close, we set is_eof = true
|
|
std::shared_ptr<FUNASR_MESSAGE> data_msg = nullptr;
|
|
auto it_data = data_map.find(hdl);
|
|
if (it_data != data_map.end()) {
|
|
data_msg = it_data->second;
|
|
} else {
|
|
continue;
|
|
}
|
|
unique_lock guard_decoder(*(data_msg->thread_lock));
|
|
data_msg->msg["is_eof"]=true;
|
|
guard_decoder.unlock();
|
|
//remove_hdl(hdl, data_map);
|
|
to_remove.push_back(hdl);
|
|
LOG(INFO)<<"connection is closed: "<<e.what();
|
|
|
|
}
|
|
iter++;
|
|
}
|
|
for (auto hdl : to_remove) {
|
|
remove_hdl(hdl, data_map);
|
|
LOG(INFO) << "remove one connection ";
|
|
}
|
|
}
|
|
}
|
|
void WebSocketServer::on_message(websocketpp::connection_hdl hdl,
|
|
message_ptr msg) {
|
|
unique_lock lock(m_lock);
|
|
// find the sample data vector according to one connection
|
|
|
|
std::shared_ptr<FUNASR_MESSAGE> msg_data = nullptr;
|
|
|
|
auto it_data = data_map.find(hdl);
|
|
if (it_data != data_map.end()) {
|
|
msg_data = it_data->second;
|
|
} else {
|
|
lock.unlock();
|
|
return;
|
|
}
|
|
|
|
std::shared_ptr<std::vector<char>> sample_data_p = msg_data->samples;
|
|
std::shared_ptr<std::vector<std::vector<std::string>>> punc_cache_p =
|
|
msg_data->punc_cache;
|
|
std::shared_ptr<websocketpp::lib::mutex> thread_lock_p = msg_data->thread_lock;
|
|
|
|
lock.unlock();
|
|
|
|
if (sample_data_p == nullptr) {
|
|
LOG(INFO) << "error when fetch sample data vector";
|
|
return;
|
|
}
|
|
|
|
const std::string& payload = msg->get_payload(); // get msg type
|
|
unique_lock guard_decoder(*(thread_lock_p)); // mutex for one connection
|
|
switch (msg->get_opcode()) {
|
|
case websocketpp::frame::opcode::text: {
|
|
nlohmann::json jsonresult = nlohmann::json::parse(payload);
|
|
|
|
if (jsonresult.contains("wav_name")) {
|
|
msg_data->msg["wav_name"] = jsonresult["wav_name"];
|
|
}
|
|
if (jsonresult.contains("mode")) {
|
|
msg_data->msg["mode"] = jsonresult["mode"];
|
|
}
|
|
if (jsonresult.contains("wav_format")) {
|
|
msg_data->msg["wav_format"] = jsonresult["wav_format"];
|
|
}
|
|
if (jsonresult.contains("audio_fs")) {
|
|
msg_data->msg["audio_fs"] = jsonresult["audio_fs"];
|
|
}
|
|
if (jsonresult.contains("chunk_size")) {
|
|
if (msg_data->tpass_online_handle == NULL) {
|
|
std::vector<int> chunk_size_vec =
|
|
jsonresult["chunk_size"].get<std::vector<int>>();
|
|
LOG(INFO)
|
|
<< "----------------FunTpassOnlineInit----------------------";
|
|
FUNASR_HANDLE tpass_online_handle =
|
|
FunTpassOnlineInit(tpass_handle, chunk_size_vec);
|
|
msg_data->tpass_online_handle = tpass_online_handle;
|
|
}
|
|
}
|
|
LOG(INFO) << "jsonresult=" << jsonresult
|
|
<< ", msg_data->msg=" << msg_data->msg;
|
|
if (jsonresult["is_speaking"] == false ||
|
|
jsonresult["is_finished"] == true) {
|
|
LOG(INFO) << "client done";
|
|
|
|
// if it is in final message, post the sample_data to decode
|
|
try{
|
|
|
|
asio::post(
|
|
io_decoder_,
|
|
std::bind(&WebSocketServer::do_decoder, this,
|
|
std::move(*(sample_data_p.get())), std::move(hdl),
|
|
std::ref(msg_data->msg), std::ref(*(punc_cache_p.get())),
|
|
std::ref(*thread_lock_p), std::move(true),
|
|
msg_data->msg["wav_name"],
|
|
std::ref(msg_data->tpass_online_handle)));
|
|
msg_data->msg["access_num"]=(int)(msg_data->msg["access_num"])+1;
|
|
}
|
|
catch (std::exception const &e)
|
|
{
|
|
LOG(ERROR)<<e.what();
|
|
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case websocketpp::frame::opcode::binary: {
|
|
// recived binary data
|
|
const auto* pcm_data = static_cast<const char*>(payload.data());
|
|
int32_t num_samples = payload.size();
|
|
|
|
if (isonline) {
|
|
sample_data_p->insert(sample_data_p->end(), pcm_data,
|
|
pcm_data + num_samples);
|
|
int setpsize =
|
|
800 * 2; // TODO, need get from client
|
|
// if sample_data size > setpsize, we post data to decode
|
|
if (sample_data_p->size() > setpsize) {
|
|
int chunksize = floor(sample_data_p->size() / setpsize);
|
|
// make sure the subvector size is an integer multiple of setpsize
|
|
std::vector<char> subvector = {
|
|
sample_data_p->begin(),
|
|
sample_data_p->begin() + chunksize * setpsize};
|
|
// keep remain in sample_data
|
|
sample_data_p->erase(sample_data_p->begin(),
|
|
sample_data_p->begin() + chunksize * setpsize);
|
|
|
|
try{
|
|
// post to decode
|
|
asio::post(io_decoder_,
|
|
std::bind(&WebSocketServer::do_decoder, this,
|
|
std::move(subvector), std::move(hdl),
|
|
std::ref(msg_data->msg),
|
|
std::ref(*(punc_cache_p.get())),
|
|
std::ref(*thread_lock_p), std::move(false),
|
|
msg_data->msg["wav_name"],
|
|
std::ref(msg_data->tpass_online_handle)));
|
|
msg_data->msg["access_num"]=(int)(msg_data->msg["access_num"])+1;
|
|
}
|
|
catch (std::exception const &e)
|
|
{
|
|
LOG(ERROR)<<e.what();
|
|
}
|
|
}
|
|
} else {
|
|
sample_data_p->insert(sample_data_p->end(), pcm_data,
|
|
pcm_data + num_samples);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
guard_decoder.unlock();
|
|
}
|
|
|
|
// init asr model
|
|
void WebSocketServer::initAsr(std::map<std::string, std::string>& model_path,
|
|
int thread_num) {
|
|
try {
|
|
tpass_handle = FunTpassInit(model_path, thread_num);
|
|
if (!tpass_handle) {
|
|
LOG(ERROR) << "FunTpassInit init failed";
|
|
exit(-1);
|
|
}
|
|
LOG(INFO) << "initAsr run check_and_clean_connection";
|
|
std::thread clean_thread(&WebSocketServer::check_and_clean_connection,this);
|
|
clean_thread.detach();
|
|
LOG(INFO) << "initAsr run check_and_clean_connection finished";
|
|
|
|
} catch (const std::exception& e) {
|
|
LOG(INFO) << e.what();
|
|
}
|
|
}
|