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/*****************************************************************************
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2024 Maxim Devaev <[email protected]> #
# #
# This program 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. #
# #
# This program 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 this program. If not, see <https://www.gnu.org/licenses/>. #
# #
*****************************************************************************/
"use strict";
import {tools, $} from "../tools.js";
export function MjpegStreamer(__setActive, __setInactive, __setInfo) {
var self = this;
/************************************************************************/
var __key = tools.makeId();
var __id = "";
var __fps = -1;
var __state = null;
var __timer = null;
var __timer_retries = 0;
/************************************************************************/
self.getName = () => "HTTP MJPEG";
self.getMode = () => "mjpeg";
self.getResolution = function() {
let el = $("stream-image");
return {
"real_width": el.naturalWidth,
"real_height": el.naturalHeight,
"view_width": el.offsetWidth,
"view_height": el.offsetHeight,
};
};
self.ensureStream = function(state) {
if (state) {
__state = state;
__findId();
if (__id.length > 0 && __id in __state.stream.clients_stat) {
__setStreamActive();
__stopChecking();
} else {
__ensureChecking();
}
} else {
__stopChecking();
__setStreamInactive();
}
};
self.stopStream = function() {
self.ensureStream(null);
let blank = "/share/png/blank-stream.png";
if (!String.prototype.endsWith.call($("stream-image").src, blank)) {
$("stream-image").src = blank;
}
};
var __setStreamActive = function() {
let old_fps = __fps;
__fps = __state.stream.clients_stat[__id].fps;
if (old_fps < 0) {
__logInfo("Active");
__setActive();
}
__setInfo(true, __state.source.online, `${__fps} fps dynamic`);
};
var __setStreamInactive = function() {
let old_fps = __fps;
__key = tools.makeId();
__id = "";
__fps = -1;
__state = null;
if (old_fps >= 0) {
__logInfo("Inactive");
__setInactive();
__setInfo(false, false, "");
}
};
var __ensureChecking = function() {
if (!__timer) {
__timer_retries = 10;
__timer = setInterval(__checkStream, 100);
}
};
var __stopChecking = function() {
if (__timer) {
clearInterval(__timer);
}
__timer = null;
__timer_retries = 0;
};
var __findId = function() {
let sc = tools.cookies.get("stream_client");
if (__id.length === 0 && sc && sc.startsWith(__key + "/")) {
__logInfo("Found acceptable stream_client cookie:", sc);
__id = sc.slice(sc.indexOf("/") + 1);
}
};
var __checkStream = function() {
__findId();
if (__id.legnth > 0 && __id in __state.stream.clients_stat) {
__setStreamActive();
__stopChecking();
} else if (__id.length > 0 && __timer_retries >= 0) {
__timer_retries -= 1;
} else {
__setStreamInactive();
__stopChecking();
let path = `/streamer/stream?key=${__key}`;
if (tools.browser.is_safari || tools.browser.is_ios) {
// uStreamer fix for WebKit
__logInfo("Using dual_final_frames=1 to fix WebKit bugs");
path += "&dual_final_frames=1";
} else if (tools.browser.is_chrome || tools.browser.is_blink) {
// uStreamer fix for Blink https://bugs.chromium.org/p/chromium/issues/detail?id=527446
__logInfo("Using advance_headers=1 to fix Blink bugs");
path += "&advance_headers=1";
}
__logInfo("Refreshing ...");
$("stream-image").src = path;
}
};
var __logInfo = (...args) => tools.info("Stream [MJPEG]:", ...args);
}
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