support street cameras

doc/ipcam-streaming.md

@@ -0,0 +1,6 @@
+Let's assume IP cameras stream h264 via rtsp.
+
+To `/etc/fstab`:
+```
+tmpfs /var/ipcamfs tmpfs mode=1755,uid=1000,gid=1000 0 0
+```

localwebsite/config.php

@@ -49,10 +49,15 @@ return [
     ],
 
     'static' => [
-        'app.css' => 6,
+        'app.css' => 8,
         'app.js' => 1,
         'polyfills.js' => 1,
         'modem.js' => 1,
         'inverter.js' => 2,
+    ],
+
+    'cam_hls_host' => '192.168.1.1',
+    'cam_list' => [
+        // fill me with names
     ]
 ];

localwebsite/engine/tpl.php

@@ -20,7 +20,7 @@ abstract class base_tpl {
     public function __construct($templates_dir, $cache_dir) {
         global $config;
 
-        $cl = get_called_class();
+        // $cl = get_called_class();
 
         $this->twig = self::twig_instance($templates_dir, $cache_dir, $config['is_dev']);
         $this->static_time = time();

localwebsite/handlers/MiscHandler.php

@@ -49,4 +49,17 @@ class MiscHandler extends RequestHandler
         $this->tpl->render_page('pump.twig');
     }
 
+    public function GET_cams() {
+        global $config;
+
+        $this->tpl->add_external_static('js', 'https://cdn.jsdelivr.net/npm/hls.js@latest');
+
+        $this->tpl->set([
+            'hls_host' => $config['cam_hls_host'],
+            'cams' => $config['cam_list']
+        ]);
+        $this->tpl->set_title('Камеры');
+        $this->tpl->render_page('cams.twig');
+    }
+
 }

localwebsite/htdocs/assets/app.css

@@ -151,3 +151,18 @@
     0%, 39%, 100% { opacity: 0; }
     40% { opacity: 1; }
 }
+
+/* cams page */
+.camfeeds {
+    display: flex;
+    flex-wrap: wrap;
+    flex-direction: row;
+}
+.camfeeds > video {
+    display: flex;
+    flex-basis: calc(50% - 20px);
+    justify-content: center;
+    flex-direction: column;
+    width: calc(50% - 10px);
+    margin: 5px;
+}

localwebsite/htdocs/index.php

@@ -25,6 +25,7 @@ $router->add('/',        'Misc main');
 $router->add('sensors/', 'Misc sensors_page');
 $router->add('pump/',    'Misc pump_page');
 $router->add('phpinfo/', 'Misc phpinfo');
+$router->add('cams/',    'Misc cams');
 
 
 $route = routerFind($router);

localwebsite/templates-web/cams.twig

@@ -0,0 +1,64 @@
+<nav aria-label="breadcrumb">
+    <ol class="breadcrumb">
+        <li class="breadcrumb-item"><a href="/">Главная</a></li>
+        <li class="breadcrumb-item active" aria-current="page">Камеры</li>
+    </ol>
+</nav>
+
+<div id="videos" class="camfeeds"></div>
+<video height="300" id="video"></video>
+
+<script>
+function hasFallbackSupport() {
+    var video = document.createElement('video');
+    return video.canPlayType('application/vnd.apple.mpegurl');
+}
+
+function setupHls(video, name, useHls) {
+    var src = 'http://{{ hls_host }}/ipcam/'+name+'/live.m3u8';
+
+    // hls.js is not supported on platforms that do not have Media Source Extensions (MSE) enabled.
+
+    // When the browser has built-in HLS support (check using `canPlayType`), we can provide an HLS manifest (i.e. .m3u8 URL) directly to the video element through the `src` property.
+    // This is using the built-in support of the plain video element, without using hls.js.
+
+    if (useHls) {
+        var hls = new Hls({
+            // debug: true,
+            startPosition: -1,
+        });
+        hls.loadSource(src);
+        hls.attachMedia(video);
+        hls.on(Hls.Events.MEDIA_ATTACHED, function () {
+            video.muted = true;
+            video.play();
+        });
+    } else {
+        video.src = src;
+        video.addEventListener('canplay', function () {
+            video.play();
+        });
+    }
+}
+
+function init() {
+    let useHls = Hls.isSupported();
+    if (!useHls && !hasFallbackSupport()) {
+        alert('Neither HLS nor vnd.apple.mpegurl is not supported by your browser.');
+        return;
+    }
+
+    var cams = {{ cams|json_encode|raw }};
+    for (var i = 0; i < cams.length; i++) {
+        var name = cams[i];
+        var video = document.createElement('video');
+        // video.setAttribute('height', '400');
+        video.setAttribute('id', 'video-'+name);
+        document.getElementById('videos').appendChild(video);
+
+        setupHls(video, name, useHls);
+    }
+}
+
+init();
+</script>

localwebsite/templates-web/index.twig

@@ -17,5 +17,6 @@
     <li class="list-group-item"><a href="/inverter/">Инвертор</a></li>
     <li class="list-group-item"><a href="/pump/">Насос</a></li>
     <li class="list-group-item"><a href="/sensors/">Датчики</a></li>
+    <li class="list-group-item"><a href="/cams/">Камеры</a></li>
   </ul>
 </div>

systemd/ipcam-rtsp2hls@.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=convert rtsp to hls for viewing live camera feeds in browser
+After=network-online.target
+
+[Service]
+Restart=on-failure
+User=user
+Group=user
+EnvironmentFile=/etc/ipcam-rtsp2hls.conf.d/%i.conf
+ExecStart=/home/user/homekit/tools/ipcam-rtsp2hls.sh --name %i --user $USER --password $PASSWORD --ip $IP --port $PORT $ARGS
+
+[Install]
+WantedBy=multi-user.target

tools/ipcam-rtsp2hls.sh

@@ -0,0 +1,95 @@
+#!/bin/bash
+
+PROGNAME="$0"
+OUTDIR=/var/ipcamfs # should be tmpfs
+PORT=554
+NAME=
+IP=
+USER=
+PASSWORD=
+DEBUG=0
+CHANNEL=1
+
+die() {
+  echo >&2 "error: $@"
+  exit 1
+}
+
+usage() {
+  cat <<EOF
+usage: $PROGNAME [OPTIONS] COMMAND
+
+Options:
+  --ip    camera IP
+  --port  RTSP port (default: 554)
+  --name  camera name (chunks will be stored under $OUTDIR/{name}/)
+  --user
+  --password
+  --debug
+  --channel 1|2
+
+EOF
+  exit
+}
+
+validate_channel() {
+  local c="$1"
+  case "$c" in
+    1|2)
+      :
+      ;;
+    *)
+      die "Invalid channel"
+      ;;
+    esac
+}
+
+[ -z "$1" ] && usage
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --ip|--port|--name|--user|--password)
+      _var=${1:2}
+      _var=${_var^^}
+      printf -v "$_var" '%s' "$2"
+      shift
+      ;;
+
+    --debug)
+      DEBUG=1
+      ;;
+
+    --channel)
+      CHANNEL="$2"
+      shift
+      ;;
+
+    *)
+      die "Unrecognized argument: $1"
+      ;;
+  esac
+  shift
+done
+
+[ -z "$IP" ] && die "You must specify camera IP address (--ip)."
+[ -z "$PORT" ] && die "Port can't be empty."
+[ -z "$NAME" ] && die "You must specify camera name (--name)."
+[ -z "$USER" ] && die "You must specify username (--user)."
+[ -z "$PASSWORD" ] && die "You must specify username (--password)."
+validate_channel "$CHANNEL"
+
+if [ ! -d "${OUTDIR}/${NAME}" ]; then
+  mkdir "${OUTDIR}/${NAME}" || die "Failed to create ${OUTDIR}/${NAME}!"
+fi
+
+if [ "$DEBUG" = "1" ]; then
+  ffmpeg_args="-v info"
+else
+  ffmpeg_args="-nostats -loglevel error"
+fi
+
+ffmpeg $ffmpeg_args -i rtsp://${USER}:${PASSWORD}@${IP}:${PORT}/Streaming/Channels/${CHANNEL} \
+  -c:v copy -c:a copy -bufsize 1835k \
+  -pix_fmt yuv420p \
+  -flags -global_header -hls_time 5 -hls_list_size 6 -hls_wrap 5 \
+  ${OUTDIR}/${NAME}/live.m3u8