[FFmpeg-trac] #6708(avdevice:new): support >16 audio bitdepth in decklink input

[FFmpeg]

#6708: support >16 audio bitdepth in decklink input
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               Reporter:  dericed     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avdevice
                Version:  git-master  |               Keywords:  decklink
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
--------------------------------------+----------------------------------
 Summary of the bug:

 The decklink SDK makes higher bit depth audio available, however only
 audio bit depth of 16 is accessible with the decklink input in ffmpeg. I
 propose a -raw_format_audio option or -audio_bit_depth, so that 24 or 32
 could be selected. There is a comparable option in bmdcapture as -s, see
 https://github.com/lu-
 zero/bmdtools/blob/2c7c5bba81d4305bd4b8bcdc10f9a16026bfc7c7/bmdcapture.cpp#L640-L656.

 How to reproduce:
 {{{
 ffmpeg-dl -h demuxer=decklink
 ffmpeg version git-2017-09-29-3df437c Copyright (c) 2000-2017 the FFmpeg
 developers
   built with Apple LLVM version 9.0.0 (clang-900.0.37)
   configuration: --prefix=/usr/local/Cellar/ffmpegdecklink/HEAD-3df437c
 --disable-shared --enable-pthreads --enable-gpl --enable-version3
 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags=
 --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid
 --enable-opencl --enable-videotoolbox --disable-lzma --enable-nonfree
 --enable-decklink --extra-cflags=-I/usr/local/include --extra-
 ldflags=-L/usr/local/include --disable-vda
   libavutil      55. 77.101 / 55. 77.101
   libavcodec     57.106.104 / 57.106.104
   libavformat    57. 82.102 / 57. 82.102
   libavdevice    57.  9.101 / 57.  9.101
   libavfilter     6.106.100 /  6.106.100
   libavresample   3.  6.  0 /  3.  6.  0
   libswscale      4.  7.103 /  4.  7.103
   libswresample   2.  8.100 /  2.  8.100
   libpostproc    54.  6.100 / 54.  6.100
 Demuxer decklink [Blackmagic DeckLink input]:
 Blackmagic DeckLink demuxer AVOptions:
   -list_devices      <int>        .D...... list available devices (from 0
 to 1) (default 0)
   -list_formats      <int>        .D...... list supported formats (from 0
 to 1) (default 0)
   -format_code       <string>     .D...... set format by fourcc
   -bm_v210           <int>        .D...... v210 10 bit per channel (from 0
 to 1) (default 0)
   -raw_format        <int>        .D...... pixel format to be returned by
 the card when capturing (from 0 to UINT32_MAX) (default uyvy422)
      uyvy422                      .D......
      yuv422p10                    .D......
      argb                         .D......
      bgra                         .D......
      rgb10                        .D......
   -teletext_lines    <int64>      .D...... teletext lines bitmask (from 0
 to 3.43597e+10) (default 0)
      standard                     .D......
      all                          .D......
   -channels          <int>        .D...... number of audio channels (from
 2 to 16) (default 2)
   -duplex_mode       <int>        .D...... duplex mode (from 0 to 2)
 (default unset)
      unset                        .D......
      half                         .D......
      full                         .D......
   -video_input       <int>        .D...... video input (from 0 to 6)
 (default unset)
      unset                        .D......
      sdi                          .D......
      hdmi                         .D......
      optical_sdi                  .D......
      component                    .D......
      composite                    .D......
      s_video                      .D......
   -audio_input       <int>        .D...... audio input (from 0 to 6)
 (default unset)
      unset                        .D......
      embedded                     .D......
      aes_ebu                      .D......
      analog                       .D......
      analog_xlr                   .D......
      analog_rca                   .D......
      microphone                   .D......
   -audio_pts         <int>        .D...... audio pts source (from 1 to 4)
 (default audio)
      audio                        .D......
      video                        .D......
      reference                    .D......
      wallclock                    .D......
   -video_pts         <int>        .D...... video pts source (from 1 to 4)
 (default video)
      audio                        .D......
      video                        .D......
      reference                    .D......
      wallclock                    .D......
   -draw_bars         <boolean>    .D...... draw bars on signal loss
 (default true)
   -queue_size        <int64>      .D...... input queue buffer size (from 0
 to I64_MAX) (default 1.07374e+09)
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6708>
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