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camera: macOS port via darwin/ split (no shared-file pragmas)

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Reuse the AVFoundation Swift files between iOS and macOS without
sprinkling `#if canImport(UIKit)` through them. The split is:

  darwin/Camera/                 platform-shared (AVFoundation only)
    CameraPlugin                 channel + instance map
    CameraInstance               session + outputs + texture
    CameraSession                AVCaptureSession + runtime-error obs
    CaptureDevice                front/back discovery
    PhotoOutput                  AVCapturePhotoOutput
    PreviewSink                  CVPixelBuffer → FlutterTexture
    VideoRecorder                AVAssetWriter
    DeviceOrientation            wire-string enum

  ios/Classes/Camera/            iOS-only impls + extensions
    AudioSession                 AVAudioSession.upgradeForRecording
    DeviceOrientationBridge      UIDevice.orientation listener
    CameraSession+iOS            AVCaptureSessionWasInterrupted obs
                                 + InterruptionReason decode + the
                                 application-audio-session flags
                                 (all iOS-only on AVCaptureSession)
    CameraSettings               UIApplication.openSettingsURLString
    FlutterRegistrar+iOS         method-form of textures/messenger

  macos/Classes/Camera/          macOS no-op stubs (same surface)
    AudioSession                 no-op (no AVAudioSession on macOS)
    DeviceOrientationBridge      no-op (desktops don't rotate)
    CameraSession+macOS          no-op setupPlatform()
    CameraSettings               NSWorkspace → System Settings'
                                 Privacy_Camera pane
    FlutterRegistrar+macOS       property-form of textures/messenger

`CameraSession.init` now calls `setupPlatform()` which each platform
provides via an extension — keeps the iOS-only interruption observer
and the `automaticallyConfiguresApplicationAudioSession` /
`usesApplicationAudioSession` flags (both iOS-only on AVCaptureSession)
out of the shared file. Flash-mode in PhotoOutput uses
`if #available(macOS 11/13, *)` rather than `#if`, since those are
plain version gates not platform splits.

The shared files compile into the iOS pod from `ios/Classes/Camera-shared/`
and into the macOS pod from `macos/Classes/Camera-shared/`, each a
mirror populated by a `prepare_command` in the podspec:

    rm -rf Classes/Camera-shared && cp -R ../darwin/Camera Classes/Camera-shared

Symlinks and `../` source globs both fail — Pathname.glob bails on
symlinks, and CocoaPods silently drops paths that escape the pod
directory. The mirror destinations are .gitignore'd.

macOS UxPlugin now registers CameraPlugin alongside the others.
This commit is contained in:
agra
2026-05-13 18:53:46 +03:00
parent 16f986ab37
commit 14565ebd7a
22 changed files with 282 additions and 106 deletions
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22
macos/Classes/Camera/CameraSession+macOS.swift Normal file
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import AVFoundation
import Foundation
/// macOS counterpart of `CameraSession+iOS.swift`. Intentionally a
/// no-op:
///
/// - `automaticallyConfiguresApplicationAudioSession` /
/// `usesApplicationAudioSession` are iOS-only properties on
/// `AVCaptureSession`. macOS doesn't have an app-wide
/// `AVAudioSession`, so there's nothing to "configure".
/// - `AVCaptureSessionWasInterrupted` and `InterruptionReason` are
/// iOS/tvOS/watchOS only — desktop AVCaptureSessions never get
/// "interrupted by a phone call" or "displaced by another app's
/// exclusive camera hold" in the way iOS does.
///
/// `onInterrupted` and `onResumed` on [CameraSession] are present
/// for surface parity but stay silent on macOS.
extension CameraSession {
func setupPlatform() {
// Intentionally empty.
}
}