FreeCalypso > hg > gsm-codec-lib
view libtwamr/dhf_subst.c @ 457:9bcf65088006
doc/AMR-EFR-philosophy: document implemented solution
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 10 May 2024 18:20:06 +0000 |
parents | f0496507d409 |
children |
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/* * The function implemented in this module is an aid for AMR-EFR interworking: * it is meant to be invoked directly after amr_encode_frame(), it checks * the encoder output for MR122 DHF, and if the generated frame exactly * matches MR122 DHF, it is changed to GSM-EFR DHF. */ #include <stdint.h> #include <string.h> #include "tw_amr.h" void amr_dhf_subst_efr(struct amr_param_frame *frame) { if (frame->type != TX_SPEECH_GOOD) return; if (frame->mode != MR122) return; if (memcmp(frame->param, amr_dhf_mr122, AMR_MAX_PRM * sizeof(int16_t))) return; memcpy(frame->param, amr_dhf_gsmefr, AMR_MAX_PRM * sizeof(int16_t)); }