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@hellohuanlin hellohuanlin commented Feb 1, 2022

Writing photo files on background queue. A performance improvement similar to the previous PR that moves sample buffer handling to capture session queue.

Very interesting learning related to mocking NSData: It turned out that we can't OCMClassMock NSData because XCTest infrastructure itself uses NSData (e.g. XCTRunnerIDESession::logDebugMessage:), which runs on a private queue (com.apple.dt.xctest.default-debug-log-handler). The race condition is pretty common and makes the test very fragile. Took me a while to debug.

Issue:
flutter/flutter#96429

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}
_enableAudio = enableAudio;
_captureSessionQueue = captureSessionQueue;
_photoIOQueue = dispatch_queue_create("io.flutter.camera.photoIOQueue", NULL);
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captureSessionQueue was injected because it's also used in CameraPlugin.m

@hellohuanlin hellohuanlin marked this pull request as ready for review February 1, 2022 21:09
@hellohuanlin hellohuanlin requested review from cyanglaz, jmagman and stuartmorgan-g and removed request for bparrishMines February 1, 2022 21:10
@hellohuanlin hellohuanlin requested a review from jmagman February 2, 2022 00:40
@@ -0,0 +1,37 @@
// Copyright 2013 The Flutter Authors. All rights reserved.
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This is now exposed in the plugin API, I don't think we want that. I think keep most of this in the implementation and only expose FLTSavePhotoDelegate_Test.h in the test module.

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Oh I didn't add it to the umbrella header so it's not exposed outside of this package.

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Also removed thread safe wrappers from the umbrella header

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Oh right right I forgot this uses a real umbrella header and not one generated by CocoaPods.

I think you're still exposing it in the test module since you're #importing it in the _Test header.

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yep

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The original header and the test header are both exposed for unit test only. I think this is what we want.

@hellohuanlin hellohuanlin requested a review from jmagman February 2, 2022 01:52
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LGTM

@hellohuanlin hellohuanlin added the waiting for tree to go green (Use "autosubmit") This PR is approved and tested, but waiting for the tree to be green to land. label Feb 3, 2022
@fluttergithubbot fluttergithubbot merged commit 4d92d90 into flutter:main Feb 3, 2022
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Feb 4, 2022
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