feat: 切换后端至PaddleOCR-NCNN，切换工程为CMake

1.项目后端整体迁移至PaddleOCR-NCNN算法，已通过基本的兼容性测试
2.工程改为使用CMake组织，后续为了更好地兼容第三方库，不再提供QMake工程
3.重整权利声明文件，重整代码工程，确保最小化侵权风险

Log: 切换后端至PaddleOCR-NCNN，切换工程为CMake
Change-Id: I4d5d2c5d37505a4a24b389b1a4c5d12f17bfa38c

3rdparty/opencv-4.5.4/platforms/ios/run_tests.py

@@ -0,0 +1,114 @@
+#!/usr/bin/env python
+"""
+This script runs OpenCV.framework tests for iOS.
+"""
+
+from __future__ import print_function
+import glob, re, os, os.path, shutil, string, sys, argparse, traceback, multiprocessing
+from subprocess import check_call, check_output, CalledProcessError
+
+IPHONEOS_DEPLOYMENT_TARGET='9.0'  # default, can be changed via command line options or environment variable
+
+def execute(cmd, cwd = None):
+    print("Executing: %s in %s" % (cmd, cwd), file=sys.stderr)
+    print('Executing: ' + ' '.join(cmd))
+    retcode = check_call(cmd, cwd = cwd)
+    if retcode != 0:
+        raise Exception("Child returned:", retcode)
+
+class TestRunner:
+    def __init__(self, script_dir, tests_dir, build_dir, framework_dir, framework_name, arch, target, platform):
+        self.script_dir = script_dir
+        self.tests_dir = tests_dir
+        self.build_dir = build_dir
+        self.framework_dir = framework_dir
+        self.framework_name = framework_name
+        self.arch = arch
+        self.target = target
+        self.platform = platform
+
+    def _run(self):
+        if not os.path.isdir(self.build_dir):
+            os.makedirs(self.build_dir)
+
+        self.runTest()
+
+    def run(self):
+        try:
+            self._run()
+        except Exception as e:
+            print("="*60, file=sys.stderr)
+            print("ERROR: %s" % e, file=sys.stderr)
+            print("="*60, file=sys.stderr)
+            traceback.print_exc(file=sys.stderr)
+            sys.exit(1)
+
+    def getToolchain(self):
+        return None
+
+    def getCMakeArgs(self):
+        args = [
+            "cmake",
+            "-GXcode",
+            "-DFRAMEWORK_DIR=%s" % self.framework_dir,
+            "-DFRAMEWORK_NAME=%s" % self.framework_name,
+        ]
+        return args
+
+    def makeCMakeCmd(self):
+        toolchain = self.getToolchain()
+        cmakecmd = self.getCMakeArgs() + \
+            (["-DCMAKE_TOOLCHAIN_FILE=%s" % toolchain] if toolchain is not None else []) + \
+            ["-DCMAKE_INSTALL_NAME_TOOL=install_name_tool"]
+        cmakecmd.append(self.tests_dir)
+        return cmakecmd
+
+    def runTest(self):
+        cmakecmd = self.makeCMakeCmd()
+        execute(cmakecmd, cwd = self.build_dir)
+        buildcmd = self.getTestCommand()
+        execute(buildcmd, cwd = self.build_dir)
+
+    def getTestCommand(self):
+        testcmd = [
+            "xcodebuild",
+            "test",
+            "-project", "OpenCVTest.xcodeproj",
+            "-scheme", "OpenCVTestTests",
+            "-destination", "platform=%s" % self.platform
+        ]
+        return testcmd
+
+class iOSTestRunner(TestRunner):
+
+    def getToolchain(self):
+        toolchain = os.path.join(self.script_dir, "cmake", "Toolchains", "Toolchain-%s_Xcode.cmake" % self.target)
+        return toolchain
+
+    def getCMakeArgs(self):
+        args = TestRunner.getCMakeArgs(self)
+        args = args + [
+            "-DIOS_ARCH=%s" % self.arch,
+            "-DIPHONEOS_DEPLOYMENT_TARGET=%s" % os.environ['IPHONEOS_DEPLOYMENT_TARGET'],
+        ]
+        return args
+
+if __name__ == "__main__":
+    script_dir = os.path.abspath(os.path.dirname(sys.argv[0]))
+    parser = argparse.ArgumentParser(description='The script builds OpenCV.framework for iOS.')
+    parser.add_argument('tests_dir', metavar='TEST_DIR', help='folder where test files are located')
+    parser.add_argument('--build_dir', default=None, help='folder where test will be built (default is "../test_build" relative to tests_dir)')
+    parser.add_argument('--framework_dir', default=None, help='folder where OpenCV framework is located')
+    parser.add_argument('--framework_name', default='opencv2', help='Name of OpenCV framework (default: opencv2, will change to OpenCV in future version)')
+    parser.add_argument('--iphoneos_deployment_target', default=os.environ.get('IPHONEOS_DEPLOYMENT_TARGET', IPHONEOS_DEPLOYMENT_TARGET), help='specify IPHONEOS_DEPLOYMENT_TARGET')
+    parser.add_argument('--platform', default='iOS Simulator,name=iPhone 11', help='xcodebuild platform parameter (default is iOS 11 simulator)')
+    args = parser.parse_args()
+
+    os.environ['IPHONEOS_DEPLOYMENT_TARGET'] = args.iphoneos_deployment_target
+    print('Using IPHONEOS_DEPLOYMENT_TARGET=' + os.environ['IPHONEOS_DEPLOYMENT_TARGET'])
+    arch = "x86_64"
+    target = "iPhoneSimulator"
+    print('Using iPhoneSimulator ARCH=' + arch)
+
+    r = iOSTestRunner(script_dir, args.tests_dir, args.build_dir if args.build_dir else os.path.join(args.tests_dir, "../test_build"), args.framework_dir, args.framework_name, arch, target, args.platform)
+    r.run()