File with 40-byte fmt chunk and PCM format tag fails to load

Question

File with 40-byte fmt chunk and PCM format tag fails to load

ruuda opened this issue 7 years ago · comments

Ruud van Asseldonk commented 7 years ago

This issue was originally reported at RustAudio/rodio#139.

The file in the reported there contains a 40-byte fmt chunk, which is typically the case when the format tag is EXTENSIBLE, but in this case it occurs for a PCM format tag. It is not an incorrectly specified WAVEFORMATEXTENSIBLE struct, because the cbSize field is 0 like in a WAVEFORMATEX struct, not the expected 22. When the fmt chunk is treated as a WAVEFORMATEX struct (ignoring the additional bytes), the wBitsPerSample field is 24, which is invalid according to the spec.

The file appears to be a nonstandard, but every player I tried plays it nonetheless. Support for opening this file could be added without breaking existing support.

Ruud van Asseldonk · Answer 1 · Fri Oct 13 2017 04:09:31 GMT+0800 (China Standard Time)

Fixed in 66ea189. I will release a new version to crates.io in the next few days.

Ruud van Asseldonk · Answer 2 · Sat Oct 14 2017 22:57:29 GMT+0800 (China Standard Time)

Hound 3.2.0, which includes the fix, is now on crates.io.