Allow tta decoding using ffmpeg.dll

[c72578]

Typically, tta files can be decoded by CUETools using ttalib. An alternative possibility of decoding tta is ffmpeg.dll. The ffmpeg AVSampleFormat of tta files is AV_SAMPLE_FMT_S16 [1].

• Add AVSampleFormat.AV_SAMPLE_FMT_S16 to CUETools.Codecs.ffmpeg\AudioDecoder.cs
• Fixes the following exception: Specified method is not supported
• Resolves: #254

[1] https://ffmpeg.org/doxygen/3.1/group__lavu__sampfmts.html

[c72578]

Here is a build for testing, which allows decoding of tta files using ffmpeg.dll: CUETools_2.2.3_2023-04-03_git_af348c6_Allow_tta_decoding_using_ffmpeg.dll.zip SHA256: 9180002197a4d4fcb96ae06594258d66bd11a094352cfa9f6487923deb3e0f7c

For testing, ffmpeg.dll should be selected under Settings - Formats - tta - Decoder:

Required FFmpeg 4.3 dll files can be found here: https://github.com/gchudov/cuetools.net/pull/218#issuecomment-1250069100

[Barough]

Maybe you should updated FFmpeg to v6.x