FreeCalypso > hg > gsm-codec-lib
view frtest/decode.c @ 297:6b479cfb06a4
beginning of libgsmfr2 documentation
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 15 Apr 2024 07:12:31 +0000 |
parents | 8d3cfa65a6c2 |
children |
line wrap: on
line source
/* * This file is the main module for gsmfr-decode utility. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include "../libgsmfr2/tw_gsmfr.h" #include "../libtest/binreader.h" #include "../libtest/wavwriter.h" #include "../libtest/pcmwrite.h" main(argc, argv) char **argv; { FILE *binf; void *wav; struct gsmfr_fulldec_state *fd_state; uint8_t frame[BINFILE_MAX_FRAME]; int16_t pcm[160]; int rc, bfi, taf; if (argc != 3) { fprintf(stderr, "usage: %s input.gsm output.wav\n", argv[0]); exit(1); } binf = fopen(argv[1], "r"); if (!binf) { perror(argv[1]); exit(1); } wav = wav_write_open(argv[2], 8000, 16, 1); if (!wav) { perror(argv[2]); exit(1); } fd_state = gsmfr_fulldec_create(); if (!fd_state) { fprintf(stderr, "gsmfr_fulldec_create() failed!\n"); exit(1); } for (;;) { rc = binfile_read_frame(binf, frame); if (rc < 0) { fprintf(stderr, "error: garbage in %s\n", argv[1]); exit(1); } if (!rc) break; if (frame[0] == 0xBF) { bfi = 1; taf = frame[1] & 1; } else if ((frame[0] & 0xF0) == 0xD0) bfi = 0; else { fprintf(stderr, "error: %s is not in FR codec format\n", argv[1]); exit(1); } if (bfi) gsmfr_fulldec_bfi(fd_state, taf, pcm); else gsmfr_fulldec_good_frame(fd_state, frame, pcm); write_pcm_to_wav(wav, pcm); } wav_write_close(wav); exit(0); }