A quick demo, to investigate the possibility and efficiency of HEIF soft encode/decode on Android platform.
Just a simple wrapper around of libheif which use libde256 to handle decoding and libx265 to handle the encoding.
Cross compiling tool is android-ndk-r17b standalone toolchain clang/clang++ and only armeabi-v7a is available for now. If you need more architectures support, check here to see how to generate libheif.so step by step.
Remove all assembly implementation of x265 in order to avoid TEXTREL problem, might be faster if assembly for x265 is turned on, but I have no idea how to fix this TEXTREL problem.
The main and very simple JNI wrapper can be found at heif_jni.cpp, accept input format rgba(can easily obtained from bitmap in Android) and yuv, produce output format is rgba which can be used easily to create a bitmap in Android.
NOTE: libheif.so include debug info, not stripped, its size can be smaller with debug info stripped if you are going to integrate inside your released product, and x86 and x86_64 architectures are not tested.
The encoded heif can be pull from device and open on macOS
$ adb pull /mnt/sdcard/output.heic
$ open output.heicLicensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.