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/*
* Copyright (C) 2024 Mikhail Burakov. This file is part of streamer.
*
* streamer is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* streamer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with streamer. If not, see <https://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <pipewire/pipewire.h>
#include <signal.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "audio_context.h"
#include "io_context.h"
#include "proto.h"
#include "util.h"
#include "video_context.h"
static volatile sig_atomic_t g_signal;
static void OnSignal(int status) { g_signal = status; }
static bool SetupSignalHandler(int sig, void (*func)(int)) {
struct sigaction sa = {
.sa_handler = func,
};
if (sigemptyset(&sa.sa_mask) || sigaddset(&sa.sa_mask, sig)) {
LOG("Failed to configure signal set (%s)", strerror(errno));
return false;
}
if (sigaction(sig, &sa, NULL)) {
LOG("Failed to set signal action (%s)", strerror(errno));
return false;
}
return true;
}
static void HandleClientSession(struct IoContext* io_context) {
struct VideoContext* video_context = VideoContextCreate(io_context);
if (!video_context) {
LOG("Failed to create video context");
return;
}
struct AudioContext* audio_context = NULL;
while (!g_signal) {
struct Proto* proto = IoContextRead(io_context);
if (!proto) {
LOG("Failed to read proto");
goto leave;
}
switch (proto->header->type) {
case kProtoTypeHello:
if (audio_context) {
LOG("Audio reconfiguration prohibited");
proto->Destroy(proto);
goto leave;
}
audio_context = AudioContextCreate(io_context, proto);
if (!audio_context) {
LOG("Failed to create audio context");
goto leave;
}
break;
case kProtoTypePing:
case kProtoTypeUhid:
break;
default:
LOG("Unexpected proto received");
proto->Destroy(proto);
goto leave;
}
}
leave:
if (audio_context) AudioContextDestroy(audio_context);
VideoContextDestroy(video_context);
}
int main(int argc, char* argv[]) {
pw_init(&argc, &argv);
if (argc < 2) {
LOG("Usage: streamer <port>");
goto leave;
}
int port = atoi(argv[1]);
if (0 >= port || port > UINT16_MAX) {
LOG("Invalid port \"%s\"", argv[1]);
goto leave;
}
SetupSignalHandler(SIGINT, OnSignal);
SetupSignalHandler(SIGPIPE, SIG_IGN);
SetupSignalHandler(SIGTERM, OnSignal);
while (!g_signal) {
struct IoContext* io_context = IoContextCreate((uint16_t)port);
if (!io_context) {
LOG("Failed to create io context");
goto leave;
}
HandleClientSession(io_context);
IoContextDestroy(io_context);
}
leave:
pw_deinit();
bool result = g_signal == SIGINT || g_signal == SIGTERM;
return result ? EXIT_SUCCESS : EXIT_FAILURE;
}
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