[FFmpeg-devel] [RFC 00/10] AV_SAMPLE_FMT_DSD

[Peter Ross]

RFC:

Direct Stream Digital (DSD), a.k.a One bit audio (OBA), is an alternative to PCM.
It can be found in Super Audio CDs and hi-res downloadable music.

Changes:
- add sample fmt
- move DSD-to-PCM conversion from libavcodec/dsddec into libswresample
- DSD-over-PCM encoder, enabling bit perfect playback to external hardware

Peter Ross (10):
  add AV_SAMPLE_FMT_DSD and AV_SAMPLE_FMT_DSDP
  swresample/audioconvert: integrate DSD to PCM conversion
  swresample/audioconvert: display error message if not conversion not
    supported
  avfiter/af_aresample: when converting DSD->PCM and no output sample
    rate is specified, reduce output sample rate by
    swr_dsd2pcm_sr_factor()
  avcodec/dsd: rework codecs to use AV_SAMPLE_FMT_DSD
  avformat/uncodedframecrcenc: process AV_SAMPLE_FMT_DSD and
    AV_SAMPLE_FMT_DSD
  DSD-over-PCM (DoP)
  avformat/riff: enable DoP muxing
  avformat/iff: report actual DSD sample rate
  avformat/dsfdec: report actual DSD sample rate

 Changelog                        |   1 +
 doc/APIchanges                   |   6 ++
 doc/general.texi                 |   1 +
 libavcodec/Makefile              |  10 +-
 libavcodec/allcodecs.c           |   9 +-
 libavcodec/avcodec.h             |   1 +
 libavcodec/codec_desc.c          |  15 ++-
 libavcodec/dop.c                 | 172 ++++++++++++++++++++++++++++++++++
 libavcodec/dsd_tablegen.c        |  38 --------
 libavcodec/dsd_tablegen.h        |  95 -------------------
 libavcodec/dsddec.c              | 198 +++++++++++++++++++--------------------
 libavcodec/utils.c               |   3 +
 libavfilter/af_aresample.c       |   6 ++
 libavformat/dsfdec.c             |   3 +-
 libavformat/iff.c                |   2 +-
 libavformat/riff.c               |   1 +
 libavformat/riffenc.c            |   3 +-
 libavformat/uncodedframecrcenc.c |   2 +
 libavutil/samplefmt.c            |  13 ++-
 libavutil/samplefmt.h            |   3 +
 libswresample/Makefile           |  18 ++++
 libswresample/audioconvert.c     |  65 ++++++++++++-
 libswresample/audioconvert.h     |  11 ++-
 libswresample/dsd_tablegen.h     |  95 +++++++++++++++++++
 libswresample/swresample.c       |  24 ++++-
 libswresample/swresample.h       |   7 ++
 26 files changed, 543 insertions(+), 259 deletions(-)
 create mode 100644 libavcodec/dop.c
 delete mode 100644 libavcodec/dsd_tablegen.c
 delete mode 100644 libavcodec/dsd_tablegen.h
 create mode 100644 libswresample/dsd_tablegen.h

-- 
1.8.3.2

-- Peter
(A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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