#!/usr/bin/env python import argparse import json from os import path import os import shutil import subprocess from build_java_shared_aar import cleanup, fill_template, get_compiled_aar_path, get_opencv_version ANDROID_PROJECT_TEMPLATE_DIR = path.join(path.dirname(__file__), "aar-template") TEMP_DIR = "build_static" ANDROID_PROJECT_DIR = path.join(TEMP_DIR, "AndroidProject") COMPILED_AAR_PATH_1 = path.join(ANDROID_PROJECT_DIR, "OpenCV/build/outputs/aar/OpenCV-release.aar") # original package name COMPILED_AAR_PATH_2 = path.join(ANDROID_PROJECT_DIR, "OpenCV/build/outputs/aar/opencv-release.aar") # lower case package name AAR_UNZIPPED_DIR = path.join(TEMP_DIR, "aar_unzipped") FINAL_AAR_PATH_TEMPLATE = "outputs/opencv_static_.aar" FINAL_REPO_PATH = "outputs/maven_repo" MAVEN_PACKAGE_NAME = "opencv-static" def get_list_of_opencv_libs(sdk_dir): files = os.listdir(path.join(sdk_dir, "sdk/native/staticlibs/arm64-v8a")) libs = [f[3:-2] for f in files if f[:3] == "lib" and f[-2:] == ".a"] return libs def get_list_of_3rdparty_libs(sdk_dir, abis): libs = [] for abi in abis: files = os.listdir(path.join(sdk_dir, "sdk/native/3rdparty/libs/" + abi)) cur_libs = [f[3:-2] for f in files if f[:3] == "lib" and f[-2:] == ".a"] for lib in cur_libs: if lib not in libs: libs.append(lib) return libs def add_printing_linked_libs(sdk_dir, opencv_libs): """ Modifies CMakeLists.txt file in Android project, so it prints linked libraries for each OpenCV library" """ sdk_jni_dir = sdk_dir + "/sdk/native/jni" with open(path.join(ANDROID_PROJECT_DIR, "OpenCV/src/main/cpp/CMakeLists.txt"), "a") as f: f.write('\nset(OpenCV_DIR "' + sdk_jni_dir + '")\n') f.write('find_package(OpenCV REQUIRED)\n') for lib_name in opencv_libs: output_filename_prefix = "linkedlibs." + lib_name + "." f.write('get_target_property(OUT "' + lib_name + '" INTERFACE_LINK_LIBRARIES)\n') f.write('file(WRITE "' + output_filename_prefix + '${ANDROID_ABI}.txt" "${OUT}")\n') def read_linked_libs(lib_name, abis): """ Reads linked libs for each OpenCV library from files, that was generated by gradle. See add_printing_linked_libs() """ deps_lists = [] for abi in abis: with open(path.join(ANDROID_PROJECT_DIR, "OpenCV/src/main/cpp", f"linkedlibs.{lib_name}.{abi}.txt")) as f: text = f.read() linked_libs = text.split(";") linked_libs = [x.replace("$", "") for x in linked_libs] deps_lists.append(linked_libs) return merge_dependencies_lists(deps_lists) def merge_dependencies_lists(deps_lists): """ One library may have different dependencies for different ABIS. We need to merge them into one list with all the dependencies preserving the order. """ result = [] for d_list in deps_lists: for i in range(len(d_list)): if d_list[i] not in result: if i == 0: result.append(d_list[i]) else: index = result.index(d_list[i-1]) result = result[:index + 1] + [d_list[i]] + result[index + 1:] return result def convert_deps_list_to_prefab(linked_libs, opencv_libs, external_libs): """ Converting list of dependencies into prefab format. """ prefab_linked_libs = [] for lib in linked_libs: if (lib in opencv_libs) or (lib in external_libs): prefab_linked_libs.append(":" + lib) elif (lib[:3] == "lib" and lib[3:] in external_libs): prefab_linked_libs.append(":" + lib[3:]) elif lib == "ocv.3rdparty.android_mediandk": prefab_linked_libs += ["-landroid", "-llog", "-lmediandk"] print("Warning: manualy handled ocv.3rdparty.android_mediandk dependency") elif lib == "ocv.3rdparty.flatbuffers": print("Warning: manualy handled ocv.3rdparty.flatbuffers dependency") elif lib.startswith("ocv.3rdparty"): raise Exception("Unknown lib " + lib) else: prefab_linked_libs.append("-l" + lib) return prefab_linked_libs def main(args): opencv_version = get_opencv_version(args.opencv_sdk_path) abis = os.listdir(path.join(args.opencv_sdk_path, "sdk/native/libs")) final_aar_path = FINAL_AAR_PATH_TEMPLATE.replace("", opencv_version) sdk_dir = args.opencv_sdk_path print("Removing data from previous runs...") cleanup([TEMP_DIR, final_aar_path, path.join(FINAL_REPO_PATH, "org/opencv", MAVEN_PACKAGE_NAME)]) print("Preparing Android project...") # ANDROID_PROJECT_TEMPLATE_DIR contains an Android project template that creates AAR shutil.copytree(ANDROID_PROJECT_TEMPLATE_DIR, ANDROID_PROJECT_DIR) # Configuring the Android project to static C++ libs version fill_template(path.join(ANDROID_PROJECT_DIR, "OpenCV/build.gradle.template"), path.join(ANDROID_PROJECT_DIR, "OpenCV/build.gradle"), {"LIB_NAME": "templib", "LIB_TYPE": "c++_static", "PACKAGE_NAME": MAVEN_PACKAGE_NAME, "OPENCV_VERSION": opencv_version, "COMPILE_SDK": args.android_compile_sdk, "MIN_SDK": args.android_min_sdk, "TARGET_SDK": args.android_target_sdk, "ABI_FILTERS": ", ".join(['"' + x + '"' for x in abis]), "JAVA_VERSION": args.java_version, }) fill_template(path.join(ANDROID_PROJECT_DIR, "OpenCV/src/main/cpp/CMakeLists.txt.template"), path.join(ANDROID_PROJECT_DIR, "OpenCV/src/main/cpp/CMakeLists.txt"), {"LIB_NAME": "templib", "LIB_TYPE": "STATIC"}) opencv_libs = get_list_of_opencv_libs(sdk_dir) external_libs = get_list_of_3rdparty_libs(sdk_dir, abis) add_printing_linked_libs(sdk_dir, opencv_libs) print("Running gradle assembleRelease...") # Running gradle to build the Android project subprocess.run(["./gradlew", "assembleRelease"], shell=False, cwd=ANDROID_PROJECT_DIR, check=True) # The created AAR package contains only one empty libtemplib.a library. # We need to add OpenCV libraries manually. # AAR package is just a zip archive complied_aar_path = get_compiled_aar_path(COMPILED_AAR_PATH_1, COMPILED_AAR_PATH_2) # two possible paths shutil.unpack_archive(complied_aar_path, AAR_UNZIPPED_DIR, "zip") print("Adding libs to AAR...") # Copying 3rdparty libs from SDK into the AAR for lib in external_libs: for abi in abis: os.makedirs(path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi)) if path.exists(path.join(sdk_dir, "sdk/native/3rdparty/libs/" + abi, "lib" + lib + ".a")): shutil.copy(path.join(sdk_dir, "sdk/native/3rdparty/libs/" + abi, "lib" + lib + ".a"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi, "lib" + lib + ".a")) else: # One OpenCV library may have different dependency lists for different ABIs, but we can write only one # full dependency list for all ABIs. So we just add empty .a library if this ABI doesn't have this dependency. shutil.copy(path.join(AAR_UNZIPPED_DIR, "prefab/modules/templib/libs/android." + abi, "libtemplib.a"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi, "lib" + lib + ".a")) shutil.copy(path.join(AAR_UNZIPPED_DIR, "prefab/modules/templib/libs/android." + abi + "/abi.json"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi + "/abi.json")) shutil.copy(path.join(AAR_UNZIPPED_DIR, "prefab/modules/templib/module.json"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/module.json")) # Copying OpenV libs from SDK into the AAR for lib in opencv_libs: for abi in abis: os.makedirs(path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi)) shutil.copy(path.join(sdk_dir, "sdk/native/staticlibs/" + abi, "lib" + lib + ".a"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi, "lib" + lib + ".a")) shutil.copy(path.join(AAR_UNZIPPED_DIR, "prefab/modules/templib/libs/android." + abi + "/abi.json"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/libs/android." + abi + "/abi.json")) os.makedirs(path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/include/opencv2")) shutil.copy(path.join(sdk_dir, "sdk/native/jni/include/opencv2/" + lib.replace("opencv_", "") + ".hpp"), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/include/opencv2/" + lib.replace("opencv_", "") + ".hpp")) shutil.copytree(path.join(sdk_dir, "sdk/native/jni/include/opencv2/" + lib.replace("opencv_", "")), path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/include/opencv2/" + lib.replace("opencv_", ""))) # Adding dependencies list module_json_text = { "export_libraries": convert_deps_list_to_prefab(read_linked_libs(lib, abis), opencv_libs, external_libs), "android": {}, } with open(path.join(AAR_UNZIPPED_DIR, "prefab/modules/" + lib + "/module.json"), "w") as f: json.dump(module_json_text, f) for h_file in ("cvconfig.h", "opencv.hpp", "opencv_modules.hpp"): shutil.copy(path.join(sdk_dir, "sdk/native/jni/include/opencv2/" + h_file), path.join(AAR_UNZIPPED_DIR, "prefab/modules/opencv_core/include/opencv2/" + h_file)) shutil.rmtree(path.join(AAR_UNZIPPED_DIR, "prefab/modules/templib")) # Creating final AAR zip archive os.makedirs("outputs", exist_ok=True) shutil.make_archive(final_aar_path, "zip", AAR_UNZIPPED_DIR, ".") os.rename(final_aar_path + ".zip", final_aar_path) print("Creating local maven repo...") shutil.copy(final_aar_path, path.join(ANDROID_PROJECT_DIR, "OpenCV/opencv-release.aar")) subprocess.run(["./gradlew", "publishReleasePublicationToMyrepoRepository"], shell=False, cwd=ANDROID_PROJECT_DIR, check=True) os.makedirs(path.join(FINAL_REPO_PATH, "org/opencv"), exist_ok=True) shutil.move(path.join(ANDROID_PROJECT_DIR, "OpenCV/build/repo/org/opencv", MAVEN_PACKAGE_NAME), path.join(FINAL_REPO_PATH, "org/opencv", MAVEN_PACKAGE_NAME)) print("Done") if __name__ == "__main__": parser = argparse.ArgumentParser(description="Builds AAR with static C++ libs from OpenCV SDK") parser.add_argument('opencv_sdk_path') parser.add_argument('--android_compile_sdk', default="26") parser.add_argument('--android_min_sdk', default="21") parser.add_argument('--android_target_sdk', default="26") parser.add_argument('--java_version', default="1_8") args = parser.parse_args() main(args)