[FFmpeg-trac] #314(avdevice:open): OpenAL device does not work on OS X

[FFmpeg]

#314: OpenAL device does not work on OS X
-------------------------------------+------------------------------------
             Reporter:  nieder       |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avdevice
              Version:  git-master   |               Resolution:
             Keywords:  openal osx   |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+------------------------------------

Comment (by nieder):

 I no longer get the crash with git HEAD:

 {{{
 nieder $ /usr/local/ffmpeg-clang/bin/ffmpeg -f openal -i 'Built-in
 Microphone' out.ogg
 ffmpeg version N-92738-g3a36b0c4b8 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
   configuration: --prefix=/usr/local/ffmpeg-clang --enable-autodetect
 --enable-gpl --enable-version3 --disable-static --enable-shared --enable-
 pthreads --disable-indev=jack --enable-bzlib --enable-chromaprint
 --enable-frei0r --enable-gcrypt --enable-iconv --enable-libass --enable-
 libbluray --enable-libbs2b --enable-libcaca --enable-libcelt --enable-
 libcdio --enable-libfontconfig --enable-libfreetype --enable-libfribidi
 --enable-libgme --enable-libgsm --enable-libkvazaar --enable-liblensfun
 --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenmpt
 --enable-libopus --enable-librtmp --enable-librubberband --disable-
 libsmbclient --enable-libsnappy --enable-libsoxr --enable-libspeex
 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-
 libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-
 libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi
 --enable-opencl --enable-opengl --enable-sdl2 --enable-videotoolbox
 --enable-zlib --cc=clang --extra-ldflags='-Wl,-dead_strip_dylibs
 -L/sw/lib' --extra-cflags=-I/sw/include --enable-openal
   libavutil      56. 24.101 / 56. 24.101
   libavcodec     58. 42.104 / 58. 42.104
   libavformat    58. 24.101 / 58. 24.101
   libavdevice    58.  6.101 / 58.  6.101
   libavfilter     7. 46.101 /  7. 46.101
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 2018-12-19 03:25:56.476 ffmpeg[49601:18236883] 03:25:56.476 WARNING:  140:
 This application, or a library it uses, is using the deprecated Carbon
 Component Manager for hosting Audio Units. Support for this will be
 removed in a future release. Also, this makes the host incompatible with
 version 3 audio units. Please transition to the API's in AudioComponent.h.
 Guessed Channel Layout for Input Stream #0.0 : stereo
 Input #0, openal, from 'Built-in Microphone':
   Duration: N/A, start: 1545211556.601565, bitrate: 1411 kb/s
     Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le (native) -> vorbis (libvorbis))
 Press [q] to stop, [?] for help
 Output #0, ogg, to 'out.ogg':
   Metadata:
     encoder         : Lavf58.24.101
     Stream #0:0: Audio: vorbis (libvorbis), 44100 Hz, stereo, fltp
     Metadata:
       encoder         : Lavc58.42.104 libvorbis
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time
     Last message repeated 10 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.887x
     Last message repeated 13 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.953x
     Last message repeated 12 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.955x
     Last message repeated 10 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.96x
     Last message repeated 13 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.973x
     Last message repeated 11 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.977x
     Last message repeated 11 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.981x
     Last message repeated 14 times
 [libvorbis @ 0x7fa1bd81d400] Queue input is backward in time=0.983x
     Last message repeated 5 times
 [ogg @ 0x7fa1bd81c200] Non-monotonous DTS in output stream 0:0; previous:
 184694, current: 184328; changing to 184694. This may result in incorrect
 timestamps in the output file.
 [ogg @ 0x7fa1bd81c200] Non-monotonous DTS in output stream 0:0; previous:
 184694, current: 184456; changing to 184694. This may result in incorrect
 timestamps in the output file.
 ...
 }}}

 and the output file is successfully recorded.

 However, I still had to modify header names and linker flags which are
 non-macOS centric.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/314#comment:4>
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