[FFmpeg-devel] [PATCH v4 0/4] JPEG XL Parser

[Leo Izen]

Changes from v3:

- Don't remove AV_CODEC_CAP_DR1 from libjxldec
- jpegxl_parse.o added to STLIBOBJS in avcodec/Makefile
- add pipe demuxer to avformat/Makefile's SHLIBOBJS

Changes from v2:

- Fix libjxldec to work with packets that are smaller than one frame
- Change how code is shared between libavcodec and libavformat to be more sensible.
- Fix the parser to work with large headers that proceed the codestream in a container format
    (for example, if several-KB Exif boxes preceed the codestream.)
- Modify the parser to set width/height instead of avctx
  Note: avctx->pix_fmt and s->format are both set, because otherwise the CLI tools won't print
    the pixel format without libjxl enabled.
- Update the fate test based on the new parser's packetization

This test relies on FATE samples that haven't been uploaded yet. To test, unzip
the following zipfile[1] in the FATE_SAMPLES directory, placing the test images in jxl/.

[1]: https://buzo.us/y.zip

sha256sum: 43a2eeb0dfdf471b47a9fdfb1653974fa156ceceb776891cc137569a8ebf0e75
signature: https://buzo.us/R.asc


Leo Izen (4):
  avcodec/libjxldec: use internal AVFrame as buffered space
  avcodec/jpegxl_parser: add JPEG XL parser
  avformat/jpegxl: remove jpegxl_probe, instead call
    avcodec/jpegxl_parse
  fate/jpegxl_anim: add demuxer fate test for jpegxl_anim

 libavcodec/Makefile                           |   3 +
 libavcodec/jpegxl.h                           |  72 ++++++
 .../jpegxl_parse.c                            | 219 ++++++++++++------
 libavcodec/jpegxl_parse.h                     |  63 +++++
 libavcodec/jpegxl_parser.c                    | 182 +++++++++++++++
 libavcodec/libjxldec.c                        |  38 +--
 libavcodec/parsers.c                          |   1 +
 libavcodec/version.h                          |   2 +-
 libavformat/Makefile                          |   6 +-
 libavformat/img2dec.c                         |   4 +-
 libavformat/jpegxl_anim_dec.c                 | 114 ++-------
 .../{jpegxl_probe.h => jpegxl_parse.c}        |  21 +-
 tests/Makefile                                |   1 +
 tests/fate/jxl.mak                            |  16 ++
 tests/ref/fate/jxl-anim-demux-belgium         |   6 +
 tests/ref/fate/jxl-anim-demux-icos4d          |   6 +
 tests/ref/fate/jxl-anim-demux-lenna256        |   7 +
 tests/ref/fate/jxl-anim-demux-newton          |   6 +
 18 files changed, 566 insertions(+), 201 deletions(-)
 create mode 100644 libavcodec/jpegxl.h
 rename libavformat/jpegxl_probe.c => libavcodec/jpegxl_parse.c (65%)
 create mode 100644 libavcodec/jpegxl_parse.h
 create mode 100644 libavcodec/jpegxl_parser.c
 rename libavformat/{jpegxl_probe.h => jpegxl_parse.c} (55%)
 create mode 100644 tests/fate/jxl.mak
 create mode 100644 tests/ref/fate/jxl-anim-demux-belgium
 create mode 100644 tests/ref/fate/jxl-anim-demux-icos4d
 create mode 100644 tests/ref/fate/jxl-anim-demux-lenna256
 create mode 100644 tests/ref/fate/jxl-anim-demux-newton

-- 
2.41.0