Ncnn Load Model

the comprehensive model loading api table

load from	alexnet.param	alexnet.param.bin	alexnet.bin
file path	load_param(const char*)	load_param_bin(const char*)	load_model(const char*)
file path
(wchar_t for windows)	load_param(const wchar_t*)	load_param_bin(const wchar_t*)	load_model(const wchar_t*)
file descriptor	load_param(FILE*)	load_param_bin(FILE*)	load_model(FILE*)
file memory	load_param_mem(const char*)	load_param(const unsigned char*)	load_model(const unsigned char*)
android asset	load_param(AAsset*)	load_param_bin(AAsset*)	load_model(AAsset*)
android asset path	load_param(AAssetManager*, const char*)	load_param_bin(AAssetManager*, const char*)	load_model(AAssetManager*, const char*)
custom IO reader	load_param(const DataReader&)	load_param_bin(const DataReader&)	load_model(const DataReader&)

points to note

1. Either of the following combination shall be enough for loading model

   • alexnet.param + alexnet.bin
   • alexnet.param.bin + alexnet.bin

2. Never modify Net opt member after loading

3. Most loading functions return 0 if success, except loading alexnet.param.bin and alexnet.bin from file memory, which returns the bytes consumed after loading

   • size_t Net::load_param(const unsigned char*)
   • size_t Net::load_model(const unsigned char*)

4. It is recommended to load model from Android asset directly to avoid copying them to sdcard on Android platform

5. The custom IO reader interface can be used to implement on-the-fly model decryption and loading