FreeCalypso > hg > gsm-codec-lib
view libgsmefr/dhf.c @ 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 | ea89eb8291bf |
children |
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/* * This C module provides the RTP-encoded form of EFR DHF as an API-exported * const array. It is not used by the library itself (DHF check in the decoder * is done on the unpacked array of params, not on the RTP-encoded frame), * but we provide this const datum as part of API because it may be useful * to some users, and for consistency with libgsmfr2. */ #include <stdint.h> #include "gsm_efr.h" const uint8_t EFR_decoder_homing_frame[EFR_RTP_FRAME_LEN] = { 0xC0, 0x85, 0xEB, 0x49, 0x0F, 0xAA, 0xD6, 0x03, 0xE3, 0xA1, 0x86, 0x07, 0xB0, 0xC4, 0x2C, 0x08, 0x04, 0x80, 0x55, 0x80, 0x00, 0x00, 0x00, 0x00, 0x03, 0x6B, 0x00, 0x00, 0x00, 0x00, 0x00 };