Add demo video player app for CES2018

[apps/videoplayer.git] / app / api / MediaScanner.qml

diff --git a/app/api/MediaScanner.qml b/app/api/MediaScanner.qml
new file mode 100644 (file)
index 0000000..add261b
--- /dev/null
+++ b/app/api/MediaScanner.qml
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2018 The Qt Company Ltd.
+ * Copyright (C) 2017 Konsulko Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import QtQuick 2.6
+import QtWebSockets 1.0
+
+WebSocket {
+    id: root
+    active: true
+    url: bindingAddress
+
+    property string statusString: "waiting..."
+    property string apiString: "mediascanner"
+    property var verbs: []
+    property string payloadLength: "9999"
+
+    readonly property var msgid: {
+        "call": 2,
+        "retok": 3,
+        "reterr": 4,
+        "event": 5
+    }
+
+    signal added(var media)
+    signal removed(var index)
+
+    property var cache: []
+    function add(files) {
+        for (var i = 0; i < files.length; i++) {
+            var media = files[i]
+
+            if (cache.indexOf(media.path) < 0) {
+                root.added(media)
+                cache.push(media.path)
+            }
+        }
+    }
+
+    function remove(prefix) {
+        for (var i = cache.length - 1; i > -1; i--) {
+            var media = cache[i]
+            if (media.substr(0, prefix.length) === prefix) {
+                root.removed(i)
+                cache.splice(i, 1)
+            }
+        }
+    }
+
+    onTextMessageReceived: {
+        console.debug("Raw response: " + message)
+        var json = JSON.parse(message)
+        var request = json[2].request
+        var response = json[2].response
+//        console.debug("response: " + JSON.stringify(response))
+        switch (json[0]) {
+            case msgid.call:
+                break
+            case msgid.retok:
+                root.statusString = request.status
+                var verb = verbs.shift()
+                if (verb === "media_result") {
+                    root.add(response.Media)
+                }
+                break
+            case msgid.reterr:
+                root.statusString = "Bad return value, binding probably not installed"
+                var verb = verbs.shift()
+                break
+            case msgid.event:
+                var payload = JSON.parse(JSON.stringify(json[2]))
+                var event = payload.event
+                if (event == "mediascanner/media_added") {
+                    console.debug("Media playlist is updated")
+                    root.add(json[2].data.Media)
+                } else if (event == "mediascanner/media_removed") {
+                    root.remove(json[2].data.Path)
+                }
+                break
+        }
+    }
+
+    onStatusChanged: {
+        switch (status) {
+        case WebSocket.Open:
+            console.debug("onStatusChanged: Open")
+            sendSocketMessage("subscribe", { value: "media_added" })
+            sendSocketMessage("subscribe", { value: "media_removed" })
+            sendSocketMessage("media_result", { type: 'video' })
+            break
+        case WebSocket.Error:
+            root.statusString = "WebSocket error: " + root.errorString
+            break
+        }
+    }
+
+    function sendSocketMessage(verb, parameter) {
+        var requestJson = [ msgid.call, payloadLength, apiString + '/'
+        + verb, parameter ]
+        console.debug("sendSocketMessage: " + JSON.stringify(requestJson))
+        verbs.push(verb)
+        sendTextMessage(JSON.stringify(requestJson))
+    }
+}