FreeCalypso > hg > gsm-codec-lib
view frtest/max-out.c @ 121:b51295fcbbae
gsmefr-encode utility written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 10 Dec 2022 03:17:58 +0000 |
parents | a8fd4ff6b013 |
children | a5ffec18e4cd |
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/* * This program reads an extended-libgsm binary file (which must be in FR * codec format, not EFR) and performs the following processing, in this * order: * * 1) dumps every frame in human-readable form just like gsmrec-dump; * 2) passes the frame stream through our DTX Rx preprocessor; * 3) dumps the output from the preprocessor; * 4) feeds this output to the standard 06.10 decoder (libgsm); * 5) finds the highest-magnitude PCM sample in the decoder output and * reports this maximum output magnitude. * * This program is intended to serve as a debug aid, for troubleshooting * of our libgsmfrp+libgsm stack. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <gsm.h> #include "../libgsmfrp/gsm_fr_preproc.h" #include "../libtest/binreader.h" main(argc, argv) char **argv; { FILE *binf; gsm dec_state; struct gsmfr_preproc_state *pp_state; unsigned frame_index; uint8_t frame[BINFILE_MAX_FRAME]; int16_t pcm[160]; gsm_signal fr_params[76]; int rc, bfi, taf; int i, j, n; unsigned samp_abs, samp_max; if (argc != 2) { fprintf(stderr, "usage: %s bin-stream-file\n", argv[0]); exit(1); } binf = fopen(argv[1], "r"); if (!binf) { perror(argv[1]); exit(1); } dec_state = gsm_create(); if (!dec_state) { fprintf(stderr, "gsm_create() failed!\n"); exit(1); } pp_state = gsmfr_preproc_create(); if (!pp_state) { fprintf(stderr, "gsmfr_preproc_create() failed!\n"); exit(1); } for (frame_index = 0; ; frame_index++) { rc = binfile_read_frame(binf, frame); if (rc < 0) { fprintf(stderr, "error: garbage in %s\n", argv[1]); exit(1); } if (!rc) break; printf("#%u: ", frame_index); switch (frame[0] & 0xF0) { case 0xB0: bfi = 1; taf = frame[1] & 1; printf("BFI TAF=%u\n", taf); break; case 0xD0: bfi = 0; fputs("FR", stdout); gsm_explode(dec_state, frame, fr_params); n = 0; for (i = 0; i < 8; i++) printf(" %u", fr_params[n++]); putchar('\n'); for (i = 0; i < 4; i++) { putchar(' '); for (j = 0; j < 17; j++) printf(" %u", fr_params[n++]); putchar('\n'); } break; default: fprintf(stderr, "error: %s is not in FR codec format\n", argv[1]); exit(1); } if (bfi) gsmfr_preproc_bfi(pp_state, taf, frame); else gsmfr_preproc_good_frame(pp_state, frame); fputs("Xform:", stdout); gsm_explode(dec_state, frame, fr_params); n = 0; for (i = 0; i < 8; i++) printf(" %u", fr_params[n++]); putchar('\n'); for (i = 0; i < 4; i++) { putchar(' '); for (j = 0; j < 17; j++) printf(" %u", fr_params[n++]); putchar('\n'); } gsm_decode(dec_state, frame, pcm); samp_max = 0; for (i = 0; i < 160; i++) { if (pcm[i] >= 0) samp_abs = pcm[i]; else samp_abs = -pcm[i]; if (samp_abs > samp_max) samp_max = samp_abs; } printf(" MAX=%u\n", samp_max); } exit(0); }