Hi! The easiest might be to skip cross compiling and build it natively. So either on an AWS instance, or on a virtual machine on your Mac. On the VM, just install the built-essential libsndfile-dev, libglib-dev and cmake packages (or whatever they are called on the distro you are using), build it and then copy the compiled executive, libfluidsynth.so* and libsndfile.so* to your AWS.
Cheers, Marcus Am Mo., 24. Dez. 2018, 06:54 hat Justin <justin2...@gmail.com> geschrieben: > Thanks for the quick reply! Installing the dependencies via homebrew fixed > my issue, and fluidsynth can now do the conversion for me locally! > However, I'm facing another issue now, which probably comes from the fact > that I compiled the code on my mac, and I'm trying to run it on AWS lambda > (which I think runs Amazon Linux): > > File "/var/lang/lib/python3.7/subprocess.py", line 1516, in _execute_child > raise child_exception_type(errno_num, err_msg, err_filename) > OSError: [Errno 8] Exec format error: 'fluidsynth_exec/fluidsynth' > > The (python) code which raises this error is as follows: > > fluidsynth_command = ['fluidsynth_exec/fluidsynth', '-ni', > tmp_sf2_file_name, tmp_mid_file_name, '-F', tmp_wav_file_name, '-r', > '44100'] > subprocess.check_call(fluidsynth_command) > > > This code works locally for me, so I guess I need to cross-compile > fluidsynth to work on AWS lambda. Do you have any experience with this? > Unfortunately, most of the literature I'm finding on cmake and > cross-compilation seems really opaque, and I can't even find anything that > mentions how to make it work for Amazon Linux. I'm especially uncertain > about doing this cross compilation, since it'll need to rely on libsndfile, > which presumably is built for mac osx on my machine. > Thanks, > Justin > > On Sun, Dec 23, 2018 at 7:09 PM Marcus Weseloh <mar...@weseloh.cc> wrote: > >> Hi Justin, >> >> you probably compiled Fluidsynth without libsndfile support, so the >> resulting audio is a raw 16-bit signed dual-channel float audio file (so >> not a .wav file with proper headers). You can either convert this raw file >> to wav using some tool, or install libsndfile-dev (or whatever it's called >> in your distribution) before building fluidsynth. >> >> Cheers, >> >> Marcus >> >> Am So., 23. Dez. 2018 um 23:34 Uhr schrieb Justin <justin2...@gmail.com>: >> >>> Hello, I'm trying to compile a fluidsynth binary. For my application, I >>> need a way to convert from midi to mp3 on an AWS lambda, and I thought that >>> using fluidsynth would be the best way. These are the steps I took: >>> >>> >>> 1. Clone fluidsynth from here: >>> https://github.com/FluidSynth/fluidsynth >>> 2. Created build directory and ran 'cmake ..' from build directory >>> 3. Ran 'make fluidsynth' from build directory. This seemed to create >>> a binary file called 'fluidsynth' in build/src directory >>> 4. Downloaded a sound font file from >>> https://github.com/urish/cinto/blob/master/media/FluidR3%20GM.sf2 >>> (renamed to sf.sf2 for convenience >>> >>> >>> Running the binary gave the following output: >>> >>> > fluidsynth -ni sf.sf2 some_midi.mid -F output.wav -r 44100 >>> >>> FluidSynth runtime version 2.0.2 >>> >>> Copyright (C) 2000-2018 Peter Hanappe and others. >>> >>> Distributed under the LGPL license. >>> >>> SoundFont(R) is a registered trademark of E-mu Systems, Inc. >>> >>> >>> >>> >>> Rendering audio to file 'output.wav'.. >>> >>> >>> However, when I tried to play the output.wav file that was generated, it >>> just gave a short loud click/pop. >>> >>> >>> I'm not sure what I'm doing wrong. Could someone give me some advice for >>> how to figure out how to get this working? Or is there a better way for me >>> to get fluidsynth to work on AWS lambda? >>> >>> >>> Thanks! >>> >>> Justin >>> >>> >>> _______________________________________________ >>> fluid-dev mailing list >>> fluid-dev@nongnu.org >>> https://lists.nongnu.org/mailman/listinfo/fluid-dev >>> >> _______________________________________________ >> fluid-dev mailing list >> fluid-dev@nongnu.org >> https://lists.nongnu.org/mailman/listinfo/fluid-dev >> > _______________________________________________ > fluid-dev mailing list > fluid-dev@nongnu.org > https://lists.nongnu.org/mailman/listinfo/fluid-dev >
_______________________________________________ fluid-dev mailing list fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
