This wrapper library enables FFmpeg to use AudioToolbox codecs on Windows, with DLLs shipped with iTunes.
i.e. You need to install iTunes, or be able to LoadLibrary("CoreAudioToolbox.dll"), for this to work.
bin/atw_ldwrapper
replaces linker parameters so we don't need to modify FFmpeg sourceinclude
header files from nu774/qaac, with some minor changes. Not guranteed to work with other programs.
Files in bin and src are licensed under WTFPL.
# in MSYS2 MinGW shell
cd path/to/this/repo
mkdir build
cd build
prefix="$PWD/install-prefix"
cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX="$prefix" ..
make install
# test if we can use the wrapper library, it should not crash
./testapp
mkdir ffmpeg
cd ffmpeg
export CFLAGS="-I${prefix}/include" LDFLAGS="-L${prefix}/lib"
path/to/ffmpeg/source/tree/configure --enable-audiotoolbox
make LD="${prefix}/bin/atw_ldwrapper"
# test if ffmpeg can use it
./ffmpeg -f lavfi -i sine=1000 -c aac_at -f mp4 -y NUL