月: 2020年9月

Type ‘MLModel’ has no member ‘__loadContents’ error on xcode 12

Reference

https://stackoverflow.com/questions/63917164/ml-build-error-for-catalyst-xcode-12-gm

Symptom

Type ‘MLModel’ has no member ‘__loadContents’ error occurred on Xcode 12

Cause

CoreML compiler in Xcode 12.0 GM is generating code that has symbols available only on macOS BigSur causing the compilation issue. If the goal is to build a catalyst or macOS-only app with Xcode 12.0

Solution

  1. In your targets build settings you can set COREML_CODEGEN_LANGUAGE to “None”
  2. Open terminal then go to where your .mlmodel folder
  3. Type “xcrun coremlcompiler generate <YourModel.mlmodel> –language Swift .”
  4. This will create <YourModel.swift> file in same folder.
  5. Open Xcode and add <YourModel.swift> in your project.
  6. Click <YourModel.swift> and comment out method that compiler complains.

In my case, I commented out the following two functions, recompiled the project again and it worked fine.

//    class func load(configuration: MLModelConfiguration = MLModelConfiguration(), completionHandler handler: @escaping (Swift.Result<CatDog100, 

//    class func load(contentsOf modelURL: URL, configuration: MLModelConfiguration = MLModelConfiguration(), completionHandler handler: @escaping (Swift.Result<CatDog100, Error>) -> Void) {

framework related errors

No such module ‘framework名’

症状

コンパイル時に、No such module ‘framework名’のエラー

原因

framework のサーチパスが設定されていない可能性がある。

対応

Build Settings >> Search Paths >> Framework Search Paths のパスを正しく設定する。

この時、TestFoundation.framework という名前の場合、TestFoundation.framework の１つ上のディレクトリを指定する。

例　Debug の iphonesimulator の場合
***/Build/Products/Debug-iphonesimulator/TestFoundation.framework
であれば、
***/Build/Products/Debug-iphonesimulator
になる。

framework の種類が、Debug/Release, iphoneos/iphonesimulator により、パスが異なってくるので、正しいパスを設定する。

Could not find module ‘フレームワーク名’ for target ‘arm64-apple-ios’; found: x86_64-apple-ios-simulator, x86_64

症状

Could not find module ‘フレームワーク名’ for target ‘arm64-apple-ios’; found: x86_64-apple-ios-simulator, x86_64

原因

framework のサーチパスが シミュレータ用にビルドされたフレームワークのパスに設定されている。

対応

Build Settings >> Search Paths >> Framework Search Paths のパスを正しく設定する。

この時、TestFoundation.framework という名前の場合、TestFoundation.framework の１つ上のディレクトリを指定する。

例　Debug の iphonesimulator の場合
***/Build/Products/Debug-iphoneos/TestFoundation.framework
であれば、
***/Build/Products/Debug-iphoneosになる。

framework の種類が、Debug/Release, iphoneos/iphonesimulator により、パスが異なってくるので、正しいパスを設定する。

Building for iOS, but the linked and embedded framework

症状

iOS 用でフレームワークを含むプロジェクトをコンパイル時に、次のエラー。

プロジェクトパス Building for iOS, but the linked and embedded framework ‘フレームワーク名.framework’ was built for iOS Simulator.

原因

iOS (実機)用にビルドしたが、埋め込まれたフレームワークが iOS シミュレータ用にビルドされている。

対応

Build Settings >> Search Paths >> Framework Search Paths のパスを正しく設定する。１つ上のエラーへの対応方法を参照。

signal SIGABORT

症状

dyld: Library not loaded: @rpath/TestFoundation.framework/TestFoundation

  Referenced from: /Users/uchukamen/Library/Developer/CoreSimulator/Devices/255ADD3E-7C65-4B7E-B2C6-A2F3458C7F13/data/Containers/Bundle/Application/8F3B69D4-05EE-4128-A34D-E85A6D7CEE96/CallFramework.app/CallFramework

  Reason: image not found

dyld: launch, loading dependent libraries

DYLD_SHARED_CACHE_DIR=/Users/uchukamen/Library/Developer/CoreSimulator/Caches/dyld/19G2021/com.apple.CoreSimulator.SimRuntime.iOS-14-0.18A372

DYLD_ROOT_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot

DYLD_LIBRARY_PATH=/Users/uchukamen/Library/Developer/Xcode/DerivedData/CallFramework-cbztckdabgiykdcxvrwnezepshbh/Build/Products/Debug-iphonesimulator:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection

DYLD_INSERT_LIBRARIES=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libBacktraceRecording.dylib:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Develo

原因

プロジェクトから、framework が削除されれた。

対応

プロジェクトに、framework を追加する。

関連情報

SwiftでFramework（ライブラリ）を作成、利用する方法

Xcodeでフレームワークを追加する方法【初心者向け】

Swiftの汎用的なモジュール（Framework）開発

独自のライブラリ(.framework)を組み込んで苦労した話

unable to find utility “xcodebuild”

Symptom

$ carthage update

*** Fetching iCimulator

*** Checking out iCimulator at “1.5”

*** xcodebuild output can be found in /var/folders/gm/t2l4p33d1r9gpqzscb8kdggw0000gn/T/carthage-xcodebuild.vQIFtO.log

A shell task (/usr/bin/xcrun xcodebuild -workspace /Users/uchukamen/Desktop/Swift/NegaViewer/NegaViewerV1.1.1/Carthage/Checkouts/iCimulator/iCimulator.xcworkspace CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY= CARTHAGE=YES -list) failed with exit code 72:

xcrun: error: unable to find utility “xcodebuild”, not a developer tool or in PATH

Solution

xcode menu >> “xcode” >> preferences >> Location >> Comand Line Tools で値を設定

Check “Command Line Tools” is not “”.

A beautiful sea of clouds at Chichibu, Japan.

This video has been remixed from Chichi Live Camera photos by Python + OpenCV + Visual Studio Code on mac.

import os
import time
import datetime
import urllib.error
import urllib.request
import cv2

def download_file(url, dst_path):
    try:
        with urllib.request.urlopen(url) as web_file:
            data = web_file.read()
            with open(dst_path, mode='wb') as local_file:
                local_file.write(data)
    except urllib.error.URLError as e:
        print(e)

fourcc = cv2.VideoWriter_fourcc(* 'h264')
fps = 10
out = cv2.VideoWriter('out.mp4', fourcc, fps, (H,V))

startTime = datetime.datetime(yyyy, mm, dd, HH, MM, SS)
x = duration
for interval in range(x):
    t = startTime + datetime.timedelta(minutes=interval)
    print(datetime.datetime.strftime(t, "/%Y%m%d/%H%M%S.jpg"))
    tstr = datetime.datetime.strftime(t, "/%Y%m%d/%H%M%S.jpg")
    url = 'https://*********' + tstr
    dst_path = datetime.datetime.strftime(t, "images/%Y%m%d%H%M%S.jpg")
    if os.path.exists(dst_path):
        print("skip")
    else:
        download_file(url, dst_path)
        time.sleep(10)  # Don't rush to 

    img = cv2.imread(dst_path, cv2.IMREAD_COLOR)
    # 画像の大きさを取得
    # height, width, channels = img.shape[:3]
    # print("width: " + str(width))
    # print("height: " + str(height))
    out.write(img)

out.release()

Chichibu Live Camera

You can find out beautiful photos of Chichibu Live camera from here.

https://navi.city.chichibu.lg.jp/cloudview/

Anohana: The Flower We Saw That Day

Chichibu is also famous for the animation “Anohana: The Flower We Saw That Day“. It was on air in 2011, but still may anime fans are visiting Chichibu, the place of anime scenes.

Class QMacAutoReleasePoolTracker is implemented in both warning.

Environment

macOS Catalina 10.15.6

mac Mini

OpenCV 4.4.0

Python 3.8

Visual Studio Code V1.48.2

Symptom


When I execute the previous article, TimeLapse, the following warnings appear in the terminal.

objc[3865]: Class QMacAutoReleasePoolTracker is implemented in both /usr/local/opt/qt/lib/QtCore.framework/Versions/5/QtCore (0x10a1e0a48) and /usr/local/lib/python3.8/site-packages/cv2/.dylibs/QtCore (0x10f5fe700). One of the two will be used. Which one is undefined.

objc[3865]: Class QT_ROOT_LEVEL_POOL__THESE_OBJECTS_WILL_BE_RELEASED_WHEN_QAPP_GOES_OUT_OF_SCOPE is implemented in both /usr/local/opt/qt/lib/QtCore.framework/Versions/5/QtCore (0x10a1e0ac0) and /usr/local/lib/python3.8/site-packages/cv2/.dylibs/QtCore (0x10f5fe778). One of the two will be used. Which one is undefined.


objc[3865]: Class KeyValueObserver is implemented in both /usr/local/opt/qt/lib/QtCore.framework/Versions/5/QtCore (0x10a1e0ae8) and /usr/local/lib/python3.8/site-packages/cv2/.dylibs/QtCore (0x10f5fe7a0). One of the two will be used. Which one is undefined.


objc[3865]: Class RunLoopModeTracker is implemented in both /usr/local/opt/qt/lib/QtCore.framework/Versions/5/QtCore (0x10a1e0b38) and /usr/local/lib/python3.8/site-packages/cv2/.dylibs/QtCore (0x10f5fe7f0). One of the two will be used. Which one is undefined.

Workaround

$ pip uninstall opencv-python

$ pip install opencv-python-headless

Special Thanks To

https://qiita.com/LemniscaterN/items/dfcda303677ca2ebf049

https://pypi.org/project/opencv-python/

TimeLapse by mac Mini + OpenCV + Python

Environment

macOS Catalina 10.15.6

OpenCV

Python 3.8

Tyhoon HAISHEN is coming!

Source Code

import cv2

RATE = 30
cap = cv2.VideoCapture(0)
w = cap.get(cv2.CAP_PROP_FRAME_WIDTH)
h = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)
fps = cap.get(cv2.CAP_PROP_FPS)
fourcc = cv2.VideoWriter_fourcc(*'h264')
out = cv2.VideoWriter('out.mp4', fourcc, fps, (int(w), int(h)))

count = RATE
while True:
    ret, frame = cap.read()
    if ret == True:
        if count == 0:
            out.write(frame)
            count = RATE
        count -= 1
        cv2.imshow('frame', frame)
        keyboard = cv2.waitKey(30)
        if keyboard == 27:
            break
    else:
        break
cap.release()
out.release()
cv2.destroyAllWindows()

mac, VisualStudio Code, OpenCV, VideoCapture, Crash due to PRIVACY VIOLATION

現象　

mac OSで、Visual Studio Code で、次のコードを実行すると、クラッシュする。

import cv2
cap = cv2.VideoCapture(0) # ここで、Pythonがクラッシュする。
…

環境

Mac OS: Catalina 10.15.6

Visual Studio Code: 1.48.2

Python 3.8.4

原因

クラッシュレポートを見ると、次のようになっていて、

Crashed Thread: 1 Dispatch queue: com.apple.root.default-qos
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
…
Thread 1 Crashed:: Dispatch queue: com.apple.root.default-qos
…
0x00007fff71fb4411 abort_with_payload + 9 3 com.apple.TCC 0x00007fff6868559f __CRASHING_DUE_TO_PRIVACY_VIOLATION + 163
4 com.apple.TCC 0x00007fff68683531 __TCCAccessRequest_block_invoke.114 + 500
…

CRASHING_DUE_TO_PRIVACY_VIOLATION

macOS 10.15 Catalinaでは「User Consent」がさらに強化され、アプリがスクリーンキャプチャの撮影や書類、ダウンロードフォルダへのアクセスする際にユーザーの承認が必要に。

Visual Studio Code が Python を実行する段階で、Permission を取得していないのが原因と思われる。

Workaround

調べた限りでは、解決策は見つからず、次のワークアラウンドしかない。

方法1

コマンドラインから、sudo で Visual Studio Codeを起動する。

$ sudo /Applications/Visual\ Studio\ Code.app/Contents/MacOS/Electron 

方法2

sudo /bin/bash でターミナルを起動し、Python を起動し、直接 実行する。

AV, In, Out, Session, Delegate

混乱するので、まとめ。

種別InputOutputDelegateDelegate
CameraAVCaptureDevice videoAVCapture
PhotoOutput		AVCapture
PhotoCaptureDelegate		photoOutput
LivePhotoAVCaptureDevice video, audioAVCapture
PhotoOutput		AVCapture
PhotoCaptureDelegate		capturePhoto
VideoAVCaptureDevice video, audioAVCapture
MovieFileOutput		AVCapture
FileOutputRecordingDelegate		fileOutput
Face
Detection		AVCaptureDevice videoAVCapture
VideoDataOutput		AVCapture
VideoDataOutputSampleBufferDelegate