Change #280899

Comments

avutil/samplefmt: add AV_SAMPLE_FMT_DSD
DSD (Direct Stream Digital) is one-bit sigma-delta modulated audio,
found on Super Audio CDs and in DSF/DSDIFF files. libavcodec has
several decoders producing it internally (dsd_*, dst, wavpack DSD),
each converting to float PCM as part of decoding, which makes the
bitstream itself inaccessible to API users.

Add a dedicated sample format so raw DSD can be carried through the
pipeline, e.g. for bit-perfect pass-through to DSD capable DACs.

The format has no planar variant, altform references itself.

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

Changed files

• doc/APIchanges
• libavutil/samplefmt.c
• libavutil/samplefmt.h
• libavutil/version.h
• tests/ref/fate/samplefmt