[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            |
-------------------------------------+------------------------------------
Changes (by cehoyos):

 * priority:  normal => wish
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 I can reproduce the crash if I force OpenAL enabled and fix the includes
 and linker flags.
 {{{
 (lldb) r -f openal -i 'Built-in Microphone'
 Process 20723 launched: 'ffmpeg_g' (x86_64)
 ffmpeg version N-58952-gf8d8d2e Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Dec 10 2013 14:49:51 with Apple LLVM version 5.0
 (clang-500.2.79) (based on LLVM 3.3svn)
   configuration:
   libavutil      52. 58.100 / 52. 58.100
   libavcodec     55. 45.100 / 55. 45.100
   libavformat    55. 22.100 / 55. 22.100
   libavdevice    55.  5.102 / 55.  5.102
   libavfilter     3. 92.100 /  3. 92.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
 ffmpeg_g(20723,0x7fff785df180) malloc: *** error for object 0x10131f138:
 incorrect checksum for freed object - object was probably modified after
 being freed.
 *** set a breakpoint in malloc_error_break to debug
 Process 20723 stopped
 * thread #1: tid = 0x983b, 0x00007fff8be15212
 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-
 thread, stop reason = signal SIGABRT
     frame #0: 0x00007fff8be15212 libsystem_kernel.dylib`__pthread_kill +
 10
 libsystem_kernel.dylib`__pthread_kill + 10:
 -> 0x7fff8be15212:  jae    0x7fff8be15219            ; __pthread_kill + 17
    0x7fff8be15214:  jmpq   0x7fff8be164d4            ; cerror_nocancel
    0x7fff8be15219:  ret
    0x7fff8be1521a:  nop
 (lldb) bt
 * thread #1: tid = 0x983b, 0x00007fff8be15212
 libsystem_kernel.dylib`__pthread_kill + 10, queue = 'com.apple.main-
 thread, stop reason = signal SIGABRT
     frame #0: 0x00007fff8be15212 libsystem_kernel.dylib`__pthread_kill +
 10
     frame #1: 0x00007fff88f09b24 libsystem_c.dylib`pthread_kill + 90
     frame #2: 0x00007fff88f4df61 libsystem_c.dylib`abort + 143
     frame #3: 0x00007fff88f298d5 libsystem_c.dylib`szone_error + 580
     frame #4: 0x00007fff88f2e2c2
 libsystem_c.dylib`tiny_malloc_from_free_list + 378
     frame #5: 0x00007fff88f2eb08
 libsystem_c.dylib`szone_malloc_should_clear + 971
     frame #6: 0x00007fff88f26978 libsystem_c.dylib`szone_memalign + 89
     frame #7: 0x00007fff88f2171a libsystem_c.dylib`malloc_zone_memalign +
 114
     frame #8: 0x00007fff88f21f4e libsystem_c.dylib`posix_memalign + 54
     frame #9: 0x00000001006d4ecd ffmpeg_g`av_mallocz [inlined]
 av_malloc(size=104) + 49 at mem.c:94
     frame #10: 0x00000001006d4e9c ffmpeg_g`av_mallocz(size=104) + 12 at
 mem.c:244
     frame #11: 0x0000000100139951 ffmpeg_g`avformat_find_stream_info
 [inlined] add_to_pktbuf(pkt=0x000000010131ee00) + 5 at utils.c:463
     frame #12: 0x000000010013994c
 ffmpeg_g`avformat_find_stream_info(ic=0x0000000101818a00,
 options=0x0000000101315440) + 1244 at utils.c:2959
     frame #13: 0x0000000100006c25
 ffmpeg_g`open_input_file(o=0x00007fff5fbff6d0, filename=<unavailable>) +
 1397 at ffmpeg_opt.c:861
     frame #14: 0x0000000100006510
 ffmpeg_g`open_files(l=0x000000010130e678, inout=0x0000000100851a0c,
 open_file=0x00000001000066b0) + 256 at ffmpeg_opt.c:2583
     frame #15: 0x0000000100006352
 ffmpeg_g`ffmpeg_parse_options(argc=<unavailable>, argv=<unavailable>) +
 178 at ffmpeg_opt.c:2620
     frame #16: 0x00000001000105e8 ffmpeg_g`main(argc=<unavailable>,
 argv=<unavailable>) + 184 at ffmpeg.c:3522
     frame #17: 0x00007fff92ec27e1 libdyld.dylib`start + 1
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/314#comment:2>
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