FreeCalypso > hg > gsm-codec-lib
view libgsmfr2/pp_state.h @ 519:6f8abfe253a4 default tip
gsmhr-dec-craft: works after bugfix
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 01 Sep 2024 20:00:01 +0000 |
parents | 573afa985df6 |
children |
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/* * This header file is internal to libgsmfr2; * here we define our state structure for the Rx DTX preprocessor component. */ enum rx_dtx_st { NO_DATA = 0, SPEECH, SPEECH_MUTING, COMFORT_NOISE, LOST_SID, CN_MUTING, }; struct gsmfr_preproc_state { enum rx_dtx_st rx_state; uint8_t speech_frame[GSMFR_RTP_FRAME_LEN]; uint8_t sid_prefix[5]; uint8_t sid_xmaxc; uint32_t cn_random_lfsr; unsigned cn_random_6fold; }; /* we use the same LFSR PRNG for CN as ETSI EFR implementation */ #define PN_INITIAL_SEED 0x70816958L /* Pseudo noise generator seed value */