xref: /expo/packages/expo-camera/build/ExponentCameraManager.web.js.map (revision 47f2bcdc)

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{ UnavailabilityError } from 'expo-modules-core';\n\nimport {\n  CameraCapturedPicture,\n  CameraPictureOptions,\n  CameraType,\n  PermissionResponse,\n  PermissionStatus,\n} from './Camera.types';\nimport { ExponentCameraRef } from './ExponentCamera.web';\nimport {\n  canGetUserMedia,\n  isBackCameraAvailableAsync,\n  isFrontCameraAvailableAsync,\n} from './WebUserMediaManager';\n\nfunction getUserMedia(constraints: MediaStreamConstraints): Promise<MediaStream> {\n  if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n    return navigator.mediaDevices.getUserMedia(constraints);\n  }\n\n  // Some browsers partially implement mediaDevices. We can't just assign an object\n  // with getUserMedia as it would overwrite existing properties.\n  // Here, we will just add the getUserMedia property if it's missing.\n\n  // First get ahold of the legacy getUserMedia, if present\n  const getUserMedia =\n    // TODO: this method is deprecated, migrate to https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia\n    navigator.getUserMedia ||\n    navigator.webkitGetUserMedia ||\n    navigator.mozGetUserMedia ||\n    function () {\n      const error: any = new Error('Permission unimplemented');\n      error.code = 0;\n      error.name = 'NotAllowedError';\n      throw error;\n    };\n\n  return new Promise((resolve, reject) => {\n    getUserMedia.call(navigator, constraints, resolve, reject);\n  });\n}\n\nfunction handleGetUserMediaError({ message }: { message: string }): PermissionResponse {\n  // name: NotAllowedError\n  // code: 0\n  if (message === 'Permission dismissed') {\n    return {\n      status: PermissionStatus.UNDETERMINED,\n      expires: 'never',\n      canAskAgain: true,\n      granted: false,\n    };\n  } else {\n    // TODO: Bacon: [OSX] The system could deny access to chrome.\n    // TODO: Bacon: add: { status: 'unimplemented' }\n    return {\n      status: PermissionStatus.DENIED,\n      expires: 'never',\n      canAskAgain: true,\n      granted: false,\n    };\n  }\n}\n\nasync function handleRequestPermissionsAsync(): Promise<PermissionResponse> {\n  try {\n    await getUserMedia({\n      video: true,\n    });\n    return {\n      status: PermissionStatus.GRANTED,\n      expires: 'never',\n      canAskAgain: true,\n      granted: true,\n    };\n  } catch ({ message }) {\n    return handleGetUserMediaError({ message });\n  }\n}\n\nasync function handlePermissionsQueryAsync(\n  query: 'camera' | 'microphone'\n): Promise<PermissionResponse> {\n  if (!navigator?.permissions?.query) {\n    throw new UnavailabilityError('expo-camera', 'navigator.permissions API is not available');\n  }\n\n  try {\n    const { state } = await navigator.permissions.query({ name: query });\n    switch (state) {\n      case 'prompt':\n        return {\n          status: PermissionStatus.UNDETERMINED,\n          expires: 'never',\n          canAskAgain: true,\n          granted: false,\n        };\n      case 'granted':\n        return {\n          status: PermissionStatus.GRANTED,\n          expires: 'never',\n          canAskAgain: true,\n          granted: true,\n        };\n      case 'denied':\n        return {\n          status: PermissionStatus.DENIED,\n          expires: 'never',\n          canAskAgain: true,\n          granted: false,\n        };\n    }\n  } catch (e) {\n    // Firefox doesn't support querying for the camera permission, so return undetermined status\n    if (e instanceof TypeError) {\n      return {\n        status: PermissionStatus.UNDETERMINED,\n        expires: 'never',\n        canAskAgain: true,\n        granted: false,\n      };\n    }\n    throw e;\n  }\n}\n\nexport default {\n  get name(): string {\n    return 'ExponentCameraManager';\n  },\n  get Type() {\n    return {\n      back: 'back',\n      front: 'front',\n    };\n  },\n  get FlashMode() {\n    return {\n      on: 'on',\n      off: 'off',\n      auto: 'auto',\n      torch: 'torch',\n    };\n  },\n  get AutoFocus() {\n    return {\n      on: 'on',\n      off: 'off',\n      auto: 'auto',\n      singleShot: 'singleShot',\n    };\n  },\n  get WhiteBalance() {\n    return {\n      auto: 'auto',\n      continuous: 'continuous',\n      manual: 'manual',\n    };\n  },\n  get VideoQuality() {\n    return {};\n  },\n  get VideoStabilization() {\n    return {};\n  },\n  async isAvailableAsync(): Promise<boolean> {\n    return canGetUserMedia();\n  },\n  async takePicture(\n    options: CameraPictureOptions,\n    camera: ExponentCameraRef\n  ): Promise<CameraCapturedPicture> {\n    return await camera.takePicture(options);\n  },\n  async pausePreview(camera: ExponentCameraRef): Promise<void> {\n    await camera.pausePreview();\n  },\n  async resumePreview(camera: ExponentCameraRef): Promise<void> {\n    return await camera.resumePreview();\n  },\n  async getAvailableCameraTypesAsync(): Promise<string[]> {\n    if (!canGetUserMedia() || !navigator.mediaDevices.enumerateDevices) return [];\n\n    const devices = await navigator.mediaDevices.enumerateDevices();\n\n    const types: (string | null)[] = await Promise.all([\n      (await isFrontCameraAvailableAsync(devices)) && CameraType.front,\n      (await isBackCameraAvailableAsync()) && CameraType.back,\n    ]);\n\n    return types.filter(Boolean) as string[];\n  },\n  async getAvailablePictureSizes(ratio: string, camera: ExponentCameraRef): Promise<string[]> {\n    return await camera.getAvailablePictureSizes(ratio);\n  },\n  /* async getSupportedRatios(camera: ExponentCameraRef): Promise<string[]> {\n    // TODO: Support on web\n  },\n  async record(\n    options?: CameraRecordingOptions,\n    camera: ExponentCameraRef\n  ): Promise<{ uri: string }> {\n    // TODO: Support on web\n  },\n  async stopRecording(camera: ExponentCameraRef): Promise<void> {\n    // TODO: Support on web\n  }, */\n  async getPermissionsAsync(): Promise<PermissionResponse> {\n    return handlePermissionsQueryAsync('camera');\n  },\n  async requestPermissionsAsync(): Promise<PermissionResponse> {\n    return handleRequestPermissionsAsync();\n  },\n  async getCameraPermissionsAsync(): Promise<PermissionResponse> {\n    return handlePermissionsQueryAsync('camera');\n  },\n  async requestCameraPermissionsAsync(): Promise<PermissionResponse> {\n    return handleRequestPermissionsAsync();\n  },\n  async getMicrophonePermissionsAsync(): Promise<PermissionResponse> {\n    return handlePermissionsQueryAsync('microphone');\n  },\n  async requestMicrophonePermissionsAsync(): Promise<PermissionResponse> {\n    try {\n      await getUserMedia({\n        audio: true,\n      });\n      return {\n        status: PermissionStatus.GRANTED,\n        expires: 'never',\n        canAskAgain: true,\n        granted: true,\n      };\n    } catch ({ message }) {\n      return handleGetUserMediaError({ message });\n    }\n  },\n};\n"]}