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/*****************************************************************************
# #
# KVMD - The main PiKVM daemon. #
# #
# Copyright (C) 2018-2022 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";
import {wm} from "../wm.js";
import {JanusStreamer} from "./stream_janus.js";
import {MjpegStreamer} from "./stream_mjpeg.js";
export function Streamer() {
var self = this;
/************************************************************************/
var __janus_enabled = null;
var __streamer = null;
var __state = null;
var __resolution = {"width": 640, "height": 480};
var __init__ = function() {
__streamer = new MjpegStreamer(__setActive, __setInactive, __setInfo);
$("stream-led").title = "Stream inactive";
tools.slider.setParams($("stream-quality-slider"), 5, 100, 5, 80, function(value) {
$("stream-quality-value").innerHTML = `${value}%`;
});
tools.slider.setOnUpDelayed($("stream-quality-slider"), 1000, (value) => __sendParam("quality", value));
tools.slider.setParams($("stream-h264-bitrate-slider"), 25, 20000, 25, 5000, function(value) {
$("stream-h264-bitrate-value").innerHTML = value;
});
tools.slider.setOnUpDelayed($("stream-h264-bitrate-slider"), 1000, (value) => __sendParam("h264_bitrate", value));
tools.slider.setParams($("stream-h264-gop-slider"), 0, 60, 1, 30, function(value) {
$("stream-h264-gop-value").innerHTML = value;
});
tools.slider.setOnUpDelayed($("stream-h264-gop-slider"), 1000, (value) => __sendParam("h264_gop", value));
tools.slider.setParams($("stream-desired-fps-slider"), 0, 120, 1, 0, function(value) {
$("stream-desired-fps-value").innerHTML = (value === 0 ? "Unlimited" : value);
});
tools.slider.setOnUpDelayed($("stream-desired-fps-slider"), 1000, (value) => __sendParam("desired_fps", value));
$("stream-resolution-selector").onchange = (() => __sendParam("resolution", $("stream-resolution-selector").value));
tools.radio.setOnClick("stream-mode-radio", __clickModeRadio, false);
tools.slider.setParams($("stream-audio-volume-slider"), 0, 100, 1, 0, function(value) {
$("stream-video").muted = !value;
$("stream-video").volume = value / 100;
$("stream-audio-volume-value").innerHTML = value + "%";
if (__streamer.getMode() === "janus") {
let allow_audio = !$("stream-video").muted;
if (__streamer.isAudioAllowed() !== allow_audio) {
__resetStream();
}
}
});
tools.el.setOnClick($("stream-screenshot-button"), __clickScreenshotButton);
tools.el.setOnClick($("stream-reset-button"), __clickResetButton);
$("stream-window").show_hook = () => __applyState(__state);
$("stream-window").close_hook = () => __applyState(null);
};
/************************************************************************/
self.getGeometry = function() {
// Первоначально обновление геометрии считалось через ResizeObserver.
// Но оно не ловило некоторые события, например в последовательности:
// - Находять в HD переходим в фулскрин
// - Меняем разрешение на маленькое
// - Убираем фулскрин
// - Переходим в HD
// - Видим нарушение пропорций
// Так что теперь используются быстре рассчеты через offset*
// вместо getBoundingClientRect().
let res = __streamer.getResolution();
let ratio = Math.min(res.view_width / res.real_width, res.view_height / res.real_height);
return {
"x": Math.round((res.view_width - ratio * res.real_width) / 2),
"y": Math.round((res.view_height - ratio * res.real_height) / 2),
"width": Math.round(ratio * res.real_width),
"height": Math.round(ratio * res.real_height),
"real_width": res.real_width,
"real_height": res.real_height,
};
};
self.setJanusEnabled = function(enabled) {
let has_webrtc = JanusStreamer.is_webrtc_available();
let has_h264 = JanusStreamer.is_h264_available();
let set_enabled = function(imported) {
tools.hidden.setVisible($("stream-message-no-webrtc"), enabled && !has_webrtc);
tools.hidden.setVisible($("stream-message-no-h264"), enabled && !has_h264);
__janus_enabled = (enabled && has_webrtc && imported); // Don't check has_h264 for sure
tools.feature.setEnabled($("stream-mode"), __janus_enabled);
tools.info(
`Stream: Janus WebRTC state: enabled=${enabled},`
+ ` webrtc=${has_webrtc}, h264=${has_h264}, imported=${imported}`
);
let mode = (__janus_enabled ? tools.storage.get("stream.mode", "janus") : "mjpeg");
tools.radio.clickValue("stream-mode-radio", mode);
if (!__janus_enabled) {
tools.feature.setEnabled($("stream-audio"), false); // Enabling in stream_janus.js
}
self.setState(__state);
};
if (enabled && has_webrtc) {
JanusStreamer.ensure_janus(set_enabled);
} else {
set_enabled(false);
}
};
self.setState = function(state) {
__state = state;
if (__janus_enabled !== null) {
__applyState(wm.isWindowVisible($("stream-window")) ? __state : null);
}
};
var __applyState = function(state) {
if (state) {
tools.feature.setEnabled($("stream-quality"), state.features.quality && (state.streamer === null || state.streamer.encoder.quality > 0));
tools.feature.setEnabled($("stream-h264-bitrate"), state.features.h264 && __janus_enabled);
tools.feature.setEnabled($("stream-h264-gop"), state.features.h264 && __janus_enabled);
tools.feature.setEnabled($("stream-resolution"), state.features.resolution);
if (state.streamer) {
tools.el.setEnabled($("stream-quality-slider"), true);
tools.slider.setValue($("stream-quality-slider"), state.streamer.encoder.quality);
if (state.features.h264 && __janus_enabled) {
__setLimitsAndValue($("stream-h264-bitrate-slider"), state.limits.h264_bitrate, state.streamer.h264.bitrate);
tools.el.setEnabled($("stream-h264-bitrate-slider"), true);
__setLimitsAndValue($("stream-h264-gop-slider"), state.limits.h264_gop, state.streamer.h264.gop);
tools.el.setEnabled($("stream-h264-gop-slider"), true);
}
__setLimitsAndValue($("stream-desired-fps-slider"), state.limits.desired_fps, state.streamer.source.desired_fps);
tools.el.setEnabled($("stream-desired-fps-slider"), true);
let resolution_str = __makeStringResolution(state.streamer.source.resolution);
if (__makeStringResolution(__resolution) !== resolution_str) {
__resolution = state.streamer.source.resolution;
}
if (state.features.resolution) {
if ($("stream-resolution-selector").resolutions !== state.limits.available_resolutions) {
let resolutions_html = "";
for (let variant of state.limits.available_resolutions) {
resolutions_html += `<option value="${variant}">${variant}</option>`;
}
if (!state.limits.available_resolutions.includes(resolution_str)) {
resolutions_html += `<option value="${resolution_str}">${resolution_str}</option>`;
}
$("stream-resolution-selector").innerHTML = resolutions_html;
$("stream-resolution-selector").resolutions = state.limits.available_resolutions;
}
document.querySelector(`#stream-resolution-selector [value="${resolution_str}"]`).selected = true;
tools.el.setEnabled($("stream-resolution-selector"), true);
}
} else {
tools.el.setEnabled($("stream-quality-slider"), false);
tools.el.setEnabled($("stream-h264-bitrate-slider"), false);
tools.el.setEnabled($("stream-h264-gop-slider"), false);
tools.el.setEnabled($("stream-desired-fps-slider"), false);
tools.el.setEnabled($("stream-resolution-selector"), false);
}
__streamer.ensureStream(state.streamer);
} else {
__streamer.stopStream();
}
};
var __setActive = function() {
$("stream-led").className = "led-green";
$("stream-led").title = "Stream is active";
tools.el.setEnabled($("stream-screenshot-button"), true);
tools.el.setEnabled($("stream-reset-button"), true);
};
var __setInactive = function() {
$("stream-led").className = "led-gray";
$("stream-led").title = "Stream inactive";
tools.el.setEnabled($("stream-screenshot-button"), false);
tools.el.setEnabled($("stream-reset-button"), false);
};
var __setInfo = function(is_active, online, text) {
$("stream-box").classList.toggle("stream-box-offline", !online);
let el_grab = document.querySelector("#stream-window-header .window-grab");
let el_info = $("stream-info");
let title = `${__streamer.getName()} – `;
if (is_active) {
if (!online) {
title += "No signal / ";
}
title += __makeStringResolution(__resolution);
if (text.length > 0) {
title += " / " + text;
}
} else {
if (text.length > 0) {
title += text;
} else {
title += "Inactive";
}
}
el_grab.innerHTML = el_info.innerHTML = title;
};
var __setLimitsAndValue = function(el, limits, value) {
tools.slider.setRange(el, limits.min, limits.max);
tools.slider.setValue(el, value);
};
var __resetStream = function(mode=null) {
if (mode === null) {
mode = __streamer.getMode();
}
__streamer.stopStream();
if (mode === "janus") {
__streamer = new JanusStreamer(__setActive, __setInactive, __setInfo, !$("stream-video").muted);
} else { // mjpeg
__streamer = new MjpegStreamer(__setActive, __setInactive, __setInfo);
tools.feature.setEnabled($("stream-audio"), false); // Enabling in stream_janus.js
}
if (wm.isWindowVisible($("stream-window"))) {
__streamer.ensureStream(__state);
}
};
var __clickModeRadio = function() {
let mode = tools.radio.getValue("stream-mode-radio");
tools.storage.set("stream.mode", mode);
if (mode !== __streamer.getMode()) {
tools.hidden.setVisible($("stream-image"), (mode !== "janus"));
tools.hidden.setVisible($("stream-video"), (mode === "janus"));
__resetStream(mode);
}
};
var __clickScreenshotButton = function() {
let el = document.createElement("a");
el.href = "/api/streamer/snapshot?allow_offline=1";
el.target = "_blank";
document.body.appendChild(el);
el.click();
setTimeout(() => document.body.removeChild(el), 0);
};
var __clickResetButton = function() {
wm.confirm("Are you sure you want to reset stream?").then(function (ok) {
if (ok) {
__resetStream();
let http = tools.makeRequest("POST", "/api/streamer/reset", function() {
if (http.readyState === 4) {
if (http.status !== 200) {
wm.error("Can't reset stream:<br>", http.responseText);
}
}
});
}
});
};
var __sendParam = function(name, value) {
let http = tools.makeRequest("POST", `/api/streamer/set_params?${name}=${value}`, function() {
if (http.readyState === 4) {
if (http.status !== 200) {
wm.error("Can't configure stream:<br>", http.responseText);
}
}
});
};
var __makeStringResolution = function(resolution) {
return `${resolution.width}x${resolution.height}`;
};
__init__();
}
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