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Implementa la captura de fotos en alta resolución
Captura fotos de superalta resolución en tu app con AVFoundation. Obtén información sobre cuándo usar las tres opciones diferentes para capturar imágenes: RAW, con bracketing de exposición y totalmente procesadas. Aprende a configurar la captura de fotos para imágenes de 24 MP y 48 MP en las cámaras principal, teleobjetivo y ultra gran angular. Además, descubre cómo el procesamiento diferido de fotos mantiene la capacidad de respuesta de tu app a medida que se toman más fotos.
Capítulos
- 0:00 - Introduction
- 0:52 - High-resolution photos
- 4:07 - Types of captures
- 5:20 - Configure a capture session
- 9:41 - Responsive capture best practices
Recursos
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5:26 - Configure the AVCaptureSession
import AVFoundation private let session = AVCaptureSession() private func configureSession() { session.beginConfiguration() session.sessionPreset = .photo } -
6:11 - Configure AVCapturePhotoOutput
import AVFoundation private let photoOutput = AVCapturePhotoOutput() private let configurePhotoOutput: () -> Void = { photoOutput.maxPhotoQualityPrioritization = .quality // or .balanced } -
6:38 - Add maxPhotoDimensions to AVCapturePhotoOutput
import AVFoundation let supportedMaxPhotoDimensions = device?.activeFormat.supportedMaxPhotoDimensions ?? [] if let largestDimension = supportedMaxPhotoDimensions.max(by: { lhs, rhs in Int(lhs.width) * Int(lhs.height) < Int(rhs.width) * Int(rhs.height) } ) { photoOutput?.maxPhotoDimensions = largestDimension } session?.commitConfiguration() session?.startRunning() -
7:21 - Update AVCapturePhotoSettings
import AVFoundation let settings = AVCapturePhotoSettings() settings.maxPhotoDimensions = dimension.cmVideoDimensionsValue settings.photoQualityPrioritization = .quality var delegate: AVCapturePhotoCaptureDelegate? // Configure photo request delegate if let delegate { photoOutput?.capturePhoto(with: settings, delegate: delegate) } -
8:59 - Prepare resources for the capture
import AVFoundation let prepareSettings = AVCapturePhotoSettings() prepareSettings.maxPhotoDimensions = photoOutput.maxPhotoDimensions prepareSettings.photoQualityPrioritization = .quality photoOutput.setPreparedPhotoSettingsArray([prepareSettings]) { prepared, error in if let error = error { print("Failed to prepare: \(error)") return } print("Pipeline prepared: \(prepared)") } // Later, when ready to capture — create NEW settings let captureSettings = AVCapturePhotoSettings() captureSettings.maxPhotoDimensions = photoOutput.maxPhotoDimensions captureSettings.photoQualityPrioritization = quality photoOutput.capturePhoto(with: captureSettings, delegate: self)
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- 0:00 - Introduction
The tradeoffs high-resolution photo capture requires — particularly between processing time and image quality — and what the session covers: photo types, configuring and capturing them, and keeping your app responsive.
- 0:52 - High-resolution photos
Explore the different photo resolutions available across iPhone cameras, including 12MP, 24MP, and 48MP, and how the photonic engine balances light and detail.
- 4:07 - Types of captures
Learn about the four types of high resolution captures you can request: fully processed photos, exposure brackets, Bayer RAW, and Apple ProRAW.
- 5:20 - Configure a capture session
An overview of AVCaptureSession setup for high resolution photos. Learn how to select quality prioritization, configure maximum photo dimensions, and preallocate resources.
- 9:41 - Responsive capture best practices
Keep your app fast and responsive by implementing overlapping captures, deferred photo processing, and fast capture prioritization to minimize shot-to-shot delay.