Resampler in opus-tools vs speex about opus-tools HOT 4 CLOSED

The resampler in opus-tools is the same as the one in libspeexdsp. It was originally part of libspeex, before libspeex was split into libspeex and libspeexdsp; libspeex now contains the Speex codec, and libspeexdsp contains the codec-independent parts that can be used with any codec.

from opus-tools.

But I couldn't find speex_resampler.c or any resampler named file in libspeex repo. Are APIs identical between the two? Whats the significance of OUTSIDE_SPEEX directive, if its defined its seems to use internal definitions of functions etc, otherwise its seems to resort to libspeex, no?

Btw, this repo is missing "resample_neon.h", where can I get that?

from opus-tools.

The resampler is not codec-specific so it is in libspeexdsp. The header file is https://gitlab.xiph.org/xiph/speexdsp/-/blob/master/include/speex/speex_resampler.h and the implementation is in https://gitlab.xiph.org/xiph/speexdsp/-/blob/master/libspeexdsp/resample.c. The code and API is the same in the opus-tools copy. OUTSIDE_SPEEX is defined in opus-tools since it uses its own copy and does not want to depend on other parts of libspeexdsp (or libspeex).

resample_neon.h is at: https://gitlab.xiph.org/xiph/speexdsp/-/blob/master/libspeexdsp/resample_neon.h

from opus-tools.

Got it. Thanks!

from opus-tools.