Add initial keyboard shortcut support.

src/camera-manager/utils/ptz.ts

@@ -0,0 +1,82 @@
+import { PTZAction, PTZBaseAction } from '../../config/ptz';
+import { ActionPhase, ActionType, CameraConfig } from '../../config/types';
+import { PTZCapabilities, PTZMovementType } from '../../types';
+
+export const getConfiguredPTZAction = (
+  cameraConfig: CameraConfig,
+  action: PTZAction,
+  options?: {
+    phase?: ActionPhase;
+    preset?: string;
+  },
+): ActionType | ActionType[] | null => {
+  if (action === 'preset') {
+    return (options?.preset ? cameraConfig.ptz.presets?.[options.preset] : null) ?? null;
+  }
+
+  if (options?.phase) {
+    return cameraConfig.ptz[`actions_${action}_${options.phase}`] ?? null;
+  }
+
+  return cameraConfig.ptz[`actions_${action}`] ?? null;
+};
+
+const hasConfiguredPTZAction = (
+  cameraConfig: CameraConfig,
+  action: PTZBaseAction,
+  options?: {
+    phase?: ActionPhase;
+    preset?: string;
+  },
+): boolean => {
+  return !!getConfiguredPTZAction(cameraConfig, action, options);
+};
+
+export const getConfiguredPTZMovementType = (
+  cameraConfig: CameraConfig,
+  action: PTZBaseAction,
+): PTZMovementType[] | null => {
+  const continuous =
+    hasConfiguredPTZAction(cameraConfig, action, { phase: 'start' }) &&
+    hasConfiguredPTZAction(cameraConfig, action, { phase: 'stop' });
+  const relative = hasConfiguredPTZAction(cameraConfig, action);
+
+  return continuous || relative
+    ? [
+        ...(continuous ? ['continuous' as const] : []),
+        ...(relative ? ['relative' as const] : []),
+      ]
+    : null;
+};
+
+export const getPTZCapabilitiesFromCameraConfig = (
+  cameraConfig: CameraConfig,
+): PTZCapabilities | null => {
+  const left = getConfiguredPTZMovementType(cameraConfig, 'left');
+  const right = getConfiguredPTZMovementType(cameraConfig, 'right');
+  const up = getConfiguredPTZMovementType(cameraConfig, 'up');
+  const down = getConfiguredPTZMovementType(cameraConfig, 'down');
+  const zoomIn = getConfiguredPTZMovementType(cameraConfig, 'zoom_in');
+  const zoomOut = getConfiguredPTZMovementType(cameraConfig, 'zoom_out');
+  const presets = cameraConfig.ptz.presets
+    ? Object.keys(cameraConfig.ptz.presets)
+    : undefined;
+
+  return left?.length ||
+    right?.length ||
+    up?.length ||
+    down?.length ||
+    zoomIn?.length ||
+    zoomOut?.length ||
+    presets?.length
+    ? {
+        left: left ?? undefined,
+        right: right ?? undefined,
+        up: up ?? undefined,
+        down: down ?? undefined,
+        zoomIn: zoomIn ?? undefined,
+        zoomOut: zoomOut ?? undefined,
+        presets: presets,
+      }
+    : null;
+};