bark.cpp/examples/server/server.cpp

189 lines
6.1 KiB
C++

#include <cmath>
#include <cstdio>
#include <cstring>
#include <fstream>
#include <string>
#include <thread>
#include <vector>
#include "bark.h"
#include "common.h"
#include "httplib.h"
#include "json.hpp"
#if defined(_MSC_VER)
#pragma warning(disable : 4244 4267) // possible loss of data
#endif
#ifndef SERVER_VERBOSE
#define SERVER_VERBOSE 1
#endif
using namespace httplib;
using json = nlohmann::json;
struct server_params {
std::string hostname = "127.0.0.1";
std::string public_path = "examples/server/public";
int32_t port = 1337;
int32_t read_timeout = 600;
int32_t write_timeout = 600;
};
void bark_print_usage(char **argv, const bark_params &params, const server_params &server_params) {
fprintf(stderr, "usage: %s [options]\n", argv[0]);
fprintf(stderr, "\n");
fprintf(stderr, "options:\n");
fprintf(stderr, " -h, --help show this help message and exit\n");
fprintf(stderr, " -m MODEL, --model MODEL path to model\n");
fprintf(stderr, " -t N, --threads N number of threads to use during computation (default: %d)\n", params.n_threads);
fprintf(stderr, " -p PORT, --port PORT port number\n");
fprintf(stderr, " -a IP, --adress IP ip adress\n");
fprintf(stderr, "\n");
}
void bark_params_parse(int argc, char **argv, bark_params &params, server_params &server_params) {
bool model_req = false;
for (int i = 1; i < argc; i++) {
std::string arg = argv[i];
if (arg == "-t" || arg == "--threads") {
params.n_threads = std::stoi(argv[++i]);
} else if (arg == "-m" || arg == "--model") {
params.model_path = argv[++i];
model_req = true;
} else if (arg == "-t" || arg == "--thread") {
params.n_threads = std::stoi(argv[++i]);
} else if (arg == "-p" || arg == "--port") {
server_params.port = std::stoi(argv[++i]);
} else if (arg == "-a" || arg == "--address") {
server_params.hostname = argv[++i];
} else if (arg == "-h" || arg == "--help") {
bark_print_usage(argv, params, server_params);
exit(0);
} else {
fprintf(stderr, "error: unknown argument: %s\n", arg.c_str());
bark_print_usage(argv, params, server_params);
exit(1);
}
}
if (!model_req) {
fprintf(stderr, "error: no model path specified\n");
bark_print_usage(argv, params, server_params);
exit(1);
}
}
bool generate_audio(int n_threads, bark_context *bctx, std::string text, std::string dest) {
if (!bark_generate_audio(bctx, text.c_str(), n_threads)) {
fprintf(stderr, "%s: An error occured. If the problem persists, feel free to open an issue to report it.\n", __func__);
return false;
}
const float *audio_data = bark_get_audio_data(bctx);
if (audio_data == NULL) {
fprintf(stderr, "%s: Could not get audio data\n", __func__);
return false;
}
const int audio_arr_size = bark_get_audio_data_size(bctx);
std::vector<float> audio_arr(audio_data, audio_data + audio_arr_size);
write_wav_on_disk(audio_arr, dest);
return true;
}
int main(int argc, char **argv) {
ggml_time_init();
const int64_t t_main_start_us = ggml_time_us();
bark_params params;
server_params server_params;
bark_verbosity_level verbosity = bark_verbosity_level::LOW;
bark_params_parse(argc, argv, params, server_params);
struct bark_context_params ctx_params = bark_context_default_params();
ctx_params.verbosity = verbosity;
struct bark_context *bctx = bark_load_model(params.model_path.c_str(), ctx_params, params.seed);
if (!bctx) {
fprintf(stderr, "%s: Could not load model\n", __func__);
return 1;
}
// bark_seed_rng(bctx, params.seed);
std::mutex bark_mutex;
Server svr;
std::string default_content = "<html>hello</html>";
// this is only called if no index.html is found in the public --path
svr.Get("/", [&default_content](const Request &, Response &res) {
res.set_content(default_content.c_str(), default_content.size(), "text/html");
return false; });
svr.Post("/bark", [&](const Request &req, Response &res) {
// aquire bark model mutex lock
bark_mutex.lock();
json jreq = json::parse(req.body);
std::string text = jreq.at("text");
std::string dest_wav_path = "/tmp/bark_tmp.wav";
// generate audio
bool generated = generate_audio(params.n_threads, bctx, text, dest_wav_path);
// read audio as binary
std::ifstream wav_file(dest_wav_path, std::ios::binary);
if (generated && wav_file.is_open()) {
// Read the contents of the WAV file
std::string wav_contents((std::istreambuf_iterator<char>(wav_file)),
std::istreambuf_iterator<char>());
// Set the response content type to audio/wav
res.set_header("Content-Type", "audio/wav");
// Set the response body to the WAV file contents
res.set_content(wav_contents, "audio/wav");
} else {
// If the file cannot be opened, set a 500 Internal Server Error response
res.status = 500;
res.set_content("Internal Server Error", "text/plain");
}
// clean up
std::remove("/tmp/bark_tmp.wav");
// return bark model mutex lock
bark_mutex.unlock(); });
svr.set_read_timeout(server_params.read_timeout);
svr.set_write_timeout(server_params.write_timeout);
if (!svr.bind_to_port(server_params.hostname, server_params.port)) {
fprintf(stderr, "\ncouldn't bind to server socket: hostname=%s port=%d\n\n",
server_params.hostname.c_str(), server_params.port);
return 1;
}
// Set the base directory for serving static files
svr.set_base_dir(server_params.public_path);
// to make it ctrl+clickable:
printf("\nbark server listening at http://%s:%d\n\n",
server_params.hostname.c_str(), server_params.port);
if (!svr.listen_after_bind()) {
return 1;
}
bark_free(bctx);
return 0;
}