added audio codec selector for bluetooth headphones

Assets/Translations/en.json

@@ -353,6 +353,16 @@
     "panel": {
       "available-devices": "Available devices",
       "blocked": "Blocked",
+      "codec-aac": "AAC",
+      "codec-aptx": "aptX",
+      "codec-aptx-hd": "aptX HD",
+      "codec-cvsd": "CVSD",
+      "codec-lc3": "LC3",
+      "codec-ldac": "LDAC",
+      "codec-msbc": "mSBC",
+      "codec-open-blueman": "Open in Blueman Manager",
+      "codec-sbc": "SBC",
+      "codec-selector": "Codec",
       "connected-devices": "Connected devices",
       "device-address": "Device address",
       "disabled": "Bluetooth is disabled",
@@ -1928,6 +1938,9 @@
       "auto-connect-disabled": "Auto-connect disabled",
       "auto-connect-enabled": "Auto-connect enabled",
       "auto-connecting": "Connecting to {count} device(s)...",
+      "codec-apply-failed": "Failed to apply Bluetooth codec profile",
+      "codec-open-blueman": "Open Blueman Manager to apply codec: {codec}",
+      "codec-selector-unavailable": "Codec profile backend is unavailable",
       "confirm-code": "Confirm code {value} on the other device.",
       "connect-failed": "Failed to connect to device",
       "disconnect-failed": "Failed to disconnect from device",

Modules/Panels/Settings/Tabs/Connections/BluetoothSubTab.qml

@@ -375,6 +375,30 @@ Item {
       readonly property bool canPair: BluetoothService.canPair(modelData)
       readonly property bool isBusy: BluetoothService.isDeviceBusy(modelData)
       readonly property bool isExpanded: root.expandedDeviceKey === BluetoothService.deviceKey(modelData)
+      readonly property var codecSelectorModel: BluetoothService.codecOptions(modelData)
+      readonly property string selectedCodecKey: BluetoothService.getSelectedCodecKey(modelData)
+      readonly property bool showCodecSelector: modelData.connected && BluetoothService.isAudioDevice(modelData) && device.codecSelectorModel.length > 0
+
+      function refreshCodecOptions() {
+        if (modelData.connected && BluetoothService.isAudioDevice(modelData)) {
+          BluetoothService.ensureCodecOptions(modelData);
+        }
+      }
+
+      onIsExpandedChanged: {
+        if (isExpanded) {
+          refreshCodecOptions();
+        }
+      }
+
+      Connections {
+        target: modelData
+        function onConnectedChanged() {
+          if (modelData.connected) {
+            device.refreshCodecOptions();
+          }
+        }
+      }
 
       function getContentColors(defaultColors = [Color.mSurface, Color.mOnSurface]) {
         if (modelData.pairing || modelData.state === BluetoothDeviceState.Connecting) {
@@ -689,6 +713,39 @@ Item {
                 onToggled: checked => BluetoothService.setDeviceAutoConnect(modelData, checked)
               }
             }
+
+            // --- Item 7: Codec selector ---
+            RowLayout {
+              visible: device.showCodecSelector
+              Layout.fillWidth: true
+              Layout.preferredWidth: 1
+              spacing: Style.marginXS
+              NIcon {
+                icon: "music"
+                pointSize: Style.fontSizeXS
+                color: Color.mOnSurface
+              }
+              NText {
+                text: I18n.tr("bluetooth.panel.codec-selector")
+                pointSize: Style.fontSizeXS
+                color: Color.mOnSurface
+              }
+              Item {
+                Layout.fillWidth: true
+              }
+              NComboBox {
+                Layout.alignment: Qt.AlignRight | Qt.AlignVCenter
+                minimumWidth: 170
+                popupHeight: 220
+                baseSize: 0.7
+                label: ""
+                enabled: !BluetoothService.isCodecSwitchBusy(modelData)
+                model: device.codecSelectorModel
+                currentKey: device.selectedCodecKey
+                placeholder: I18n.tr("common.select")
+                onSelected: key => BluetoothService.setCodecForDevice(modelData, key)
+              }
+            }
           }
         }
       }