FreeCalypso > hg > gsm-codec-lib
view dev/pack_gsmfr_rtp.c @ 377:b02e043dcba0
libtwamr: integrate qua_gain.c
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 06 May 2024 04:24:17 +0000 |
parents | e4ca04586118 |
children |
line wrap: on
line source
/* * The function in this development-only module is a copy of * gsmfr_pack_from_array() from work-in-progress libgsmfr2, which in turn * was created to serve as a drop-in replacement for gsm_implode() * from classic libgsm. The function is copied here to avoid the * philosophical problem of libgsmfr2 being a dependency for developer aid * programs used in the development of that library. */ #include <stdint.h> #define GSM_FR_MAGIC 0xD void gsmfr_pack_to_rtp(const int16_t *params, uint8_t *frame) { uint8_t *c = frame; unsigned sub; *c++ = (GSM_FR_MAGIC << 4) | ((params[0] >> 2) & 0xF); *c++ = ((params[0] & 0x3) << 6) | (params[1] & 0x3F); *c++ = ((params[2] & 0x1F) << 3) | ((params[3] >> 2) & 0x7); *c++ = ((params[3] & 0x3) << 6) | ((params[4] & 0xF) << 2) | ((params[5] >> 2) & 0x3); *c++ = ((params[5] & 0x3) << 6) | ((params[6] & 0x7) << 3) | (params[7] & 0x7); params += 8; for (sub = 0; sub < 4; sub++) { *c++ = ((params[0] & 0x7F) << 1) | ((params[1] >> 1) & 0x1); *c++ = ((params[1] & 0x1) << 7) | ((params[2] & 0x3) << 5) | ((params[3] >> 1) & 0x1F); *c++ = ((params[3] & 0x1) << 7) | ((params[4] & 0x7) << 4) | ((params[5] & 0x7) << 1) | ((params[6] >> 2) & 0x1); *c++ = ((params[6] & 0x3) << 6) | ((params[7] & 0x7) << 3) | (params[8] & 0x7); *c++ = ((params[9] & 0x7) << 5) | ((params[10] & 0x7) << 2) | ((params[11] >> 1) & 0x3); *c++ = ((params[11] & 0x1) << 7) | ((params[12] & 0x7) << 4) | ((params[13] & 0x7) << 1) | ((params[14] >> 2) & 0x1); *c++ = ((params[14] & 0x3) << 6) | ((params[15] & 0x7) << 3) | (params[16] & 0x7); params += 17; } }