Change #280908

Comments

avcodec/wavpack: use libswresample for the PCM output
Unpack DSD frames into an interleaved scratch buffer and convert to
the default AV_SAMPLE_FMT_FLTP output with libswresample instead of
the in-place local dsd2pcm conversion.

The SwrContext carries the DSD to PCM filter state across frames and
replaces the DSDContext array as the RefStruct-shared state for frame
threading.

If libswresample is disabled, the PCM output is not offered and the
decoder outputs only AV_SAMPLE_FMT_DSD. The per-channel slice
threading of the float conversion is gone, the conversion now runs in
a single swr_convert() call.

Signed-off-by: Kacper Michajłow <kasper93@gmail.com>

Changed files

• libavcodec/wavpack.c
• tests/fate/wavpack.mak