FreeCalypso > hg > gsm-codec-lib
view libgsmefr/memops.h @ 477:4c9222d95647
libtwamr encoder: always emit frame->mode = mode;
In the original implementation of amr_encode_frame(), the 'mode' member
of the output struct was set to 0xFF if the output frame type is TX_NO_DATA.
This design was made to mimic the mode field (16-bit word) being set to
0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends
on this struct member being set in any way, and amr_frame_to_tseq()
generates the needed 0xFFFF on its own, based on frame->type being equal
to TX_NO_DATA.
It is simpler and more efficient to always set frame->mode to the actual
encoding mode in amr_encode_frame(), and this new behavior has already
been documented in doc/AMR-library-API description in anticipation of
the present change.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 18 May 2024 22:30:42 +0000 |
parents | d285877fc4cc |
children |
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/* * The original code from ETSI uses its own Copy() and Set_zero() * functions, operating on Word16 elements. Here we implement them * as static inline functions wrapping around memcpy and memset. */ #include <string.h> static inline void Copy ( const Word16 x[], /* (i) : input vector */ Word16 y[], /* (o) : output vector */ Word16 L /* (i) : vector length */ ) { memcpy(y, x, L * 2); } static inline void Set_zero ( Word16 x[], /* (o) : vector to clear */ Word16 L /* (i) : length of vector */ ) { memset(x, 0, L * 2); }