Oscar Wahltinez owahltinez
owahltinez
/ using-multiple-camera-streams-08.kt
Last active
October 1, 2019 15:10
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| val characteristics: CameraCharacteristics = ... | |
| val context = this as Context // assuming we are inside of an activity | |
| val surfaceViewSize = getPreviewOutputSize( | |
| context, characteristics, SurfaceHolder::class.java) | |
| val imageReaderSize = getPreviewOutputSize( | |
| context, characteristics, ImageReader::class.java, format = ImageFormat.YUV_420_888) |
owahltinez
/ core-principles-2.kt
Created
August 27, 2019 13:22
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| // RECOMMENDED: Bind use cases to a lifecycle in a single call: | |
| CameraX.bindToLifecycle( | |
| this as LifecycleOwner, preview, imageCapture, imageAnalyzer) | |
| // Do *NOT* bind your use cases like this | |
| CameraX.bindToLifecycle(this as LifecycleOwner, preview) | |
| CameraX.bindToLifecycle(this as LifecycleOwner, imageCapture) | |
| CameraX.bindToLifecycle(this as LifecycleOwner, imageAnalyzer) |
owahltinez
/ core-principles-1.kt
Created
August 27, 2019 13:20
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| // STEP 1: Define use case configuration | |
| val imageCaptureConfig = ImageCaptureConfig.Builder() | |
| .setTargetResolution(Size(1280, 720)) | |
| .build() | |
| // STEP 2: Create the use case object | |
| val imageCapture = ImageCapture(imageCaptureConfig) | |
| // STEP 3: Bind the use case to our lifecycle | |
| CameraX.bindToLifecycle(this as LifecycleOwner, imageCapture) |
owahltinez
/ select-next-camera.kt
Last active
May 22, 2019 05:01
Select the most appropriate next camera from available ones
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| fun filterCompatibleCameras(cameraIds: Array<String>, | |
| cameraManager: CameraManager): List<String> { | |
| return cameraIds.filter { | |
| val characteristics = cameraManager.getCameraCharacteristics(it) | |
| characteristics.get(CameraCharacteristics.REQUEST_AVAILABLE_CAPABILITIES)?.contains( | |
| CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) ?: false | |
| } | |
| } | |
| fun filterCameraIdsFacing(cameraIds: List<String>, cameraManager: CameraManager, |
owahltinez
/ select-default-camera.kt
Last active
May 22, 2019 04:31
Select the appropriate default camera
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| fun getFirstCameraIdFacing(cameraManager: CameraManager, | |
| facing: Int = CameraMetadata.LENS_FACING_BACK): String? { | |
| // Get list of all compatible cameras | |
| val cameraIds = cameraManager.cameraIdList.filter { | |
| val characteristics = cameraManager.getCameraCharacteristics(it) | |
| val capabilities = characteristics.get(CameraCharacteristics.REQUEST_AVAILABLE_CAPABILITIES) | |
| capabilities?.contains( | |
| CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) ?: false | |
| } |
owahltinez
/ check-camera-characteristics.kt
Last active
May 22, 2019 04:22
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| val cameraIdList = cameraManager.cameraIdList // may be empty | |
| val characteristics = cameraManager.getCameraCharacteristics(cameraId) | |
| val cameraLensFacing = characteristics.get(CameraCharacteristics.LENS_FACING) | |
| val cameraCapabilities = characteristics.get(CameraCharacteristics.REQUEST_AVAILABLE_CAPABILITIES) | |
| val cameraCompatible = cameraCapabilities?.contains( | |
| CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) ?: false |
owahltinez
/ studioFlags.xml
Created
April 17, 2019 05:18
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| <application> | |
| <component name="StudioFlags"> | |
| <option name="data"> | |
| <map> | |
| <!-- This flag enables experimental automotive templates --> | |
| <entry key="npw.templates.automotive" value="true" /> | |
| </map> | |
| </option> | |
| </component> | |
| </application> |
owahltinez
/ multi-camera-api-6.kt
Last active
November 5, 2018 19:27
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| val cameraSession: CameraCaptureSession = ... | |
| // Use still capture template to build our capture request | |
| val captureRequest = cameraSession.device.createCaptureRequest( | |
| CameraDevice.TEMPLATE_STILL_CAPTURE) | |
| // Determine if this device supports distortion correction | |
| val characteristics: CameraCharacteristics = ... | |
| val supportsDistortionCorrection = characteristics.get( | |
| CameraCharacteristics.DISTORTION_CORRECTION_AVAILABLE_MODES)?.contains( |
owahltinez
/ multi-camera-api-3.kt
Last active
November 3, 2018 00:30
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| /** | |
| * Helper type definition that encapsulates 3 sets of output targets: | |
| * | |
| * 1. Logical camera | |
| * 2. First physical camera | |
| * 3. Second physical camera | |
| */ | |
| typealias DualCameraOutputs = | |
| Triple<MutableList<Surface>?, MutableList<Surface>?, MutableList<Surface>?> |
owahltinez
/ multi-camera-api-4.kt
Last active
November 2, 2018 21:42
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| fun findShortLongCameraPair(manager: CameraManager, facing: Int? = null): DualCamera? { | |
| return findDualCameras(manager, facing).map { | |
| val characteristics1 = manager.getCameraCharacteristics(it.physicalId1) | |
| val characteristics2 = manager.getCameraCharacteristics(it.physicalId2) | |
| // Query the focal lengths advertised by each physical camera | |
| val focalLengths1 = characteristics1.get( | |
| CameraCharacteristics.LENS_INFO_AVAILABLE_FOCAL_LENGTHS) ?: floatArrayOf(0F) | |
| val focalLengths2 = characteristics2.get( |