Hi Samih, Yes the build system requires some code to be built and natively to generate codebook files, not sure if that can happen on Android.
You could build these files on another machine and copy them across. You may also be interested in the LPCNet based Neural Net vocoders, 8kHz high quality audio at less that 2000 bit/s. I'll have an experimental codec release available soon, and there is some NEON support for phones. Cheers, David On 20/02/19 23:48, Samih Mohammed wrote: > Hi, > > We are trying to build an Android NDK project ( > https://github.com/SamihMustafa/Codec2 ) with the latest version of the > codec2 source code. The project includes both libsamplerate and codec2. > Our objective is to use codec2 to compress the voice on Khan Academy > videos being used in an open source offline library app for use in areas > with limited Internet. Libsamplerate compiles fine and generates > libsamplerate.so . Unfortunately trying to build codec2 doesn't seem to > work. > > We receive the following error when building the codec2 project: > What went wrong: > Execution failed for task ':app:externalNativeBuildDebug'. >> Build command failed. > Error while executing process > C:\Users\suhai\AppData\Local\Android\Sdk\cmake\3.6.4111459\bin\cmake.exe > with arguments {--build > C:\Users\suhai\AndroidStudioProjects\Codec2\app\.externalNativeBuild\cmake\debug\x86_64 > --target varispeed-play} > > ninja: error: build.ninja:2899: bad $-escape (literal $ must be > written as $$) > > This error seems to be related to the CMakeList on the directory codec2 > on line number 81 - BUILD_COMMAND $(MAKE) generate_codebook > # when crosscompiling we need a native executable > if(CMAKE_CROSSCOMPILING) > include(ExternalProject) > ExternalProject_Add(codec2_native > SOURCE_DIR ${CMAKE_SOURCE_DIR} > BUILD_COMMAND $(MAKE) generate_codebook > INSTALL_COMMAND ${CMAKE_COMMAND} -E copy src/generate_codebook > ${CMAKE_CURRENT_BINARY_DIR} > ) > add_executable(generate_codebook IMPORTED) > set_target_properties(generate_codebook PROPERTIES > IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/generate_codebook) > add_dependencies(generate_codebook codec2_native) > > We don't seem to have the issue mentioned in previous discussion( > https://sourceforge.net/p/freetel/mailman/message/32737213/ ), yet. Is > there a current recommended way to build for Android, or any > recommendations on next steps to try? Our objective is to make an > Android library that compiles using the normal Android NDK and could > then be reused by others. > > Thanks > Samih > > > > > > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 > _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
