enebin/Aespa

From camera to album, in just 2 lines

From camera to album. In just 2 lines.

let aespaOption = AespaOption(albumName: "YOUR_ALBUM_NAME")
let aespaSession = Aespa.session(with: aespaOption)
// Done!

Quick link

• Demo app & usage example can be found in here
• Latest API documentation can be found in here

Index

• Introduction
  • Super Easy to Use
  • No more delegate
  • Also
• Functionality
• Installation
  • Swift Package Manager (SPM)
• Usage
  • Requirements
  • Getting Started
• Implementation Examples
  • Configuration
  • Recording & Capture
• SwiftUI Integration
  • Example Usage
• Contributing
• License

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Introduction

Aespa is a robust and intuitive Swift package for video and photo capturing, built with a focus on the ease of setting up and usage.

It is designed to be easy to use from beginners to intermediate developers. If you're new to video recording on iOS or if you're looking to simplify your existing camera setup, Aespa could be the perfect fit for your project.

Super easy to use

Zip the boring configuration for session & album

Before

graph LR
User --> RP["Permission Request"]
RP -- "Granted" --> AS["AVCaptureSession"]
AS -- "Connect" --> AI["AVCaptureVideoInput"]
AS -- "Connect" --> AIA["AVCaptureAudioInput"]
AS -- "Add" --> FO["AVCaptureFileOutput"]
FO --> PHCollectionListChangeRequest

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Aespa

graph LR
   User --> Aespa --> Session & Album

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• Aespa provides an accessible API that abstracts the complexity of AVFoundation, allowing you to manage video capturing tasks with ease.

Offer essential preset configuration & customization

graph TD
AS["AespaSession"]
AS --> RV["Recording a new video"]
AS --> Se["Change zoom, video quailty, camera position, ..."]
AS --> AV["Set options like stabilization, orientation ,..."]
AS --> D["Fetching asset files"]

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• With Aespa, you can readily adjust a variety of settings.
• For a higher degree of customization, it also supports the creation of custom tunings for the recording session, offering flexible control over your recording needs.

Comprehensive error handling

• The package provides comprehensive error handling, allowing you to build robust applications with minimal effort.

No more delegate

Combine support

graph LR;
    A[Session update] -->|Trigger| B[previewLayerPublisher, ...]
    B -->|React to Changes| C[Subscribers]

		E[Background Thread] --Async--> F["Configure session"] --Finish--> A

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• Aespa's API leverages Swift's latest concurrency model to provide asynchronous functions, ensuring smooth and efficient execution of tasks.
• Additionally, it is built with Combine in mind, enabling you to handle updates such as video output and preview layer reactively using publishers and subscribers.

Also

• Automated system permission management.
• Seamless image and video capture within a single preview session.
• Thread-safe.
• Support SPM.

Functionality

Note

You can access our official documentation for more comprehensive and up-to-date explanations in here

Manual options

Common	Description
✨ zoom	Modifies the zoom factor.
✨ position	Changes the camera position.
orientation	Modifies the orientation.
focus	Alters the autofocusing mode.
quality	Adjusts the video quality preset for the recording session.
doctor	Checks if essential conditions to start recording are satisfied.
previewLayerPublisher	Responsible for emitting updates to the preview layer.

Video	Description
✨ startRecording	Initiates the recording of a video session.
✨ stopRecording	Terminates the current video recording session and attempts to save the video file.
mute	Mutes the audio input.
unmute	Restores the audio input.
stabilization	Alters the stabilization mode.
torch	Adjusts the torch mode and level.
customize	Customizes the session with a specific tuning configuration.
✨ fetchVideoFiles	Fetches a list of recorded video files.
videoFilePublisher	Emits a Result object containing a latest video file data.

Photo	Description
✨ capturePhoto	Capture a photo and returns a result image file.
✨ flashMode	Sets the flash mode for the photo capture session.
redEyeReduction	Enables or disables red-eye reduction for the photo capture session.
customize	Customizes the photo capture session with a specific AVCapturePhotoSettings.
✨ fetchPhotoFiles	Fetches a list of captured photos files.
photoFilePublisher	Emits a Result object containing a latest image file data.

InteractivePreview

One of main features, InteractivePreview provides a preset session for those who don't want to do complicated configurations.

Features	Description
Double tap to change camera	Switches between the front and back camera upon double tapping.
Pinch zoom	Allows zooming in or out on the preview by using a pinch gesture.

Installation

Swift Package Manager (SPM)

Follow these steps to install Aespa using SPM:

1. From within Xcode 13 or later, choose File > Swift Packages > Add Package Dependency.
2. At the next screen, enter the URL for the Aespa repository in the search bar then click Next.

https://github.com/enebin/Aespa.git

3. For the Version rule, select Up to Next Minor and specify the current Aespa version then click Next.
4. On the final screen, select the Aespa library and then click Finish.

Aespa should now be integrated into your project 🚀.

Usage

Note

We offer an extensively detailed and ready-to-use code base for a SwiftUI app that showcases most of the package's features. You can access it here, the demo app.

Requirements

• Swift 5.5+
• iOS 14.0+

Getting started

import Aespa

let option = AespaOption(albumName: "YOUR_ALBUM_NAME")
let aespaSession = Aespa.session(with: option)

Implementation Exapmles

Configuration

// Common setting
aespaSession
    .common(.focus(mode: .continuousAutoFocus))
    .common(.changeMonitoring(enabled: true))
    .common(.orientation(orientation: .portrait))
    .common(.quality(preset: .high))
    .common(.custom(tuner: WideColorCameraTuner())) { result in
        if case .failure(let error) = result {
            print("Error: ", error)
        }
    }

// Photo-only setting
aespaSession
    .photo(.flashMode(mode: .on))
    .photo(.redEyeReduction(enabled: true))

// Video-only setting
aespaSession
    .video(.mute)
    .video(.stabilization(mode: .auto))

Recording & Capture

// Start recording
aespaSession.startRecording()
// Later... stop recording
aespaSession.stopRecording()
// Capture photo
aespaSession.capturePhoto()

Get result

aespaSession.stopRecording { result in
    switch result {
    case .success(let file):
        print(file.path) // file://some/path
    case .failure(let error):
        print(error)
    }
}

// or...
Task {
    let files = await aespaSession.fetchVideoFiles(limit: 1)
}

// or you can use publisher
aespaSession.videoFilePublisher.sink { result in
    print(result)
}

SwiftUI Integration

Aespa also provides a super-easy way to integrate video capture functionality into SwiftUI applications. AespaSession includes a helper method to create a SwiftUI UIViewRepresentable that provides a preview of the video capture.

Example usage

import Aespa
import SwiftUI

struct VideoContentView: View {
    @StateObject private var viewModel = VideoContentViewModel()

    var body: some View {
        ZStack {
            viewModel.preview
                .frame(minWidth: 0,
                       maxWidth: .infinity,
                       minHeight: 0,
                       maxHeight: .infinity)
                .edgesIgnoringSafeArea(.all)
        }
    }
}

class VideoContentViewModel: ObservableObject {
    let aespaSession: AespaSession
    var preview: some View {
        aespaSession.interactivePreview()
    }

    init() {
        let option = AespaOption(albumName: "YOUR_ALBUM_NAME")
        self.aespaSession = Aespa.session(with: option)

        setUp()
    }

    func setUp() {
        aespaSession
            .common(.quality(preset: .high))

        // Other options
        // ...
    }
}

Note

In UIKit, you can access the preview through the previewLayer property of AespaSession. For more details, refer to the AVCaptureVideoPreviewLayer in the official Apple documentation.

Contributing

Contributions to Aespa are warmly welcomed. Please feel free to submit a pull request or create an issue if you find a bug or have a feature request.

License

Aespa is available under the MIT license. See the LICENSE file for more info.