Port to ffmpeg 5.0

[berolinux]

Replace removed functionality like accessing the codec context from an AVStream and avcodec_decode_audio4()

Signed-off-by: Bernhard Rosenkränzer [email protected] Fixes: https://github.com/acoustid/chromaprint/issues/78

[sebastinas]

With this patch the build fails with ffmpeg 4.4:

In file included from /<<PKGBUILDDIR>>/src/cmd/fpcalc.cpp:7:
/<<PKGBUILDDIR>>/src/audio/ffmpeg_audio_reader.h:144:69: error: invalid conversion from ‘const AVInputFormat*’ to ‘AVInputFormat*’ [-fpermissive]
  144 |         ret = avformat_open_input(&m_format_ctx, file_name.c_str(), m_input_fmt, &m_input_opts);
      |                                                                     ^~~~~~~~~~~
      |                                                                     |
      |                                                                     const AVInputFormat*

[blackPantherOS]

thanks mate successful build with ffmpeg5

Replace removed functionality like accessing the codec context from an AVStream and avcodec_decode_audio4()

Signed-off-by: Bernhard Rosenkränzer [email protected] Fixes: #78

[antonio-rojas]

It builds fine, but it throws errors at runtime because it doesn't account for AVERROR_EOF

[q66]

as far as I can tell this is going to need a lot more to work correctly

[lalinsky]

Thank you for the patch, but I'll end up using my version here - https://github.com/acoustid/chromaprint/pull/120