android ndk protobuf minicaffe

最新推荐文章于 2024-12-30 16:12:35 发布

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本文详细介绍了如何在Android NDK环境下集成Protobuf库，并利用MiniCaffe进行本地的深度学习推理。首先，讲述了Android Studio配置NDK的步骤，接着讨论了 Protobuf 的编译和链接过程，确保模型定义文件能在Android环境中解析。然后，重点讲解MiniCaffe的移植，包括源码修改、编译选项设置以及如何将预训练模型转换为适用于Android平台的格式。最后，给出了在Android应用中调用C++接口进行预测的示例代码，展示了如何在移动设备上实现轻量级的深度学习应用。

# Step 1. Check out the release branch or commit.
	git checkout v3.2.0

	# Step 2. Create build-armeabi-v7a folder for storing generated files.
	cd cmake && mkdir build-armeabi-v7a && cd build-armeabi-v7a

	# Step 3. Generate Makefile with CMake.
	# -Dprotobuf_BUILD_SHARED_LIBS=ON By default is static library (*.a file). I want a
	# shared library (*.so file).
	# -DCMAKE_INSTALL_PREFIX Because it's a cross-compiled library. You probably
	# want to install the header files and shared library
	# in specific folder rather than default /usr/local
	# directory.
	# -DANDROID_STL=c++_shared For the library using C++11, link to C++11 runtime.
	# -DANDROID_LINKER_FLAGS="-landroid -llog" For the library using functions of libandroid.so
	# and liblog.so.
	# -DANDROID_CPP_FEATURES="rtti exceptions" Most ppl use exception and runtime-type-information
	# features in their C++ projects.
	#
	# Debug Tips:
	# Add -LAH to see variables.
	$ANDROID_CMAKE \
	-Dprotobuf_BUILD_SHARED_LIBS=ON \
	-DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_TOOLCHAIN_FILE=/<your_path>/android.toolchain.cmake \
	-DCMAKE_INSTALL_PREFIX=/<your_install_path>/protobuf \
	-DANDROID_NDK=/Users/<your_user_name>/Library/Android/sdk/ndk-bundle \
	-DANDROID_TOOLCHAIN=clang \
	-DANDROID_ABI=armeabi-v7a \
	-DANDROID_NATIVE_API_LEVEL=16 \
	-DANDROID_STL=c++_shared \
	-DANDROID_LINKER_FLAGS="-landroid -llog" \
	-DANDROID_CPP_FEATURES="rtti exceptions" \
	..

	# Step 4. Run Make with generated Makefile.
	$ANDROID_CMAKE --build .

	# Step 5 (optional). Install the generated header files and shared library
	# to specific folder.
	make install