FreeCalypso > hg > gsm-codec-lib
view efrtest/etsi-enc.c @ 133:b4b1c3a192c7
doc/Binary-file-format: document gsmrec-dump
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 11 Dec 2022 05:24:11 +0000 |
parents | ff0372186b59 |
children | a13b1605142b |
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/* * gsmefr-etsi-enc is a test program for our EFR encoder: it reads raw * 16-bit PCM (matching ETSI's *.inp) as input and writes ETSI's *.cod * format as output, allowing our decoder to be tested with ETSI's * official test sequences. * * ETSI input and output files are read and written in LE byte order, * matching the official test sequences in ts_100725v050200p0.zip. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "../libgsmefr/gsm_efr.h" static int read_input(inf, pcm, filename_for_errs) FILE *inf; int16_t *pcm; char *filename_for_errs; { uint8_t file_bytes[320], *sp; int cc; unsigned n; cc = fread(file_bytes, 2, 160, inf); if (cc == 0) return 0; if (cc != 160) { fprintf(stderr, "error: short read from %s\n", filename_for_errs); exit(1); } sp = file_bytes; for (n = 0; n < 160; n++) { pcm[n] = sp[0] | (sp[1] << 8); sp += 2; } return 1; } static void frame2bits(frame, bits) uint8_t *frame, *bits; { unsigned nb, byte, mask, bit; for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) { byte = *frame++; for (mask = 0x80; mask; mask >>= 1) { if (byte & mask) bit = 1; else bit = 0; *bits++ = bit; } } } static void emit_output(outf, bits, nbits) FILE *outf; uint8_t *bits; unsigned nbits; { unsigned n; for (n = 0; n < nbits; n++) { putc(bits[n], outf); putc(0, outf); } } main(argc, argv) char **argv; { char *infname, *outfname; FILE *inf, *outf; struct EFR_encoder_state *state; int16_t pcm[160]; uint8_t frame[EFR_RTP_FRAME_LEN], bits[250]; int dtx, rc, sp, vad; if (argc == 3 && argv[1][0] != '-') { dtx = 0; infname = argv[1]; outfname = argv[2]; } else if (argc == 4 && !strcmp(argv[1], "-d")) { dtx = 1; infname = argv[2]; outfname = argv[3]; } else { fprintf(stderr, "usage: %s [-d] input.inp output.cod\n", argv[0]); exit(1); } inf = fopen(infname, "r"); if (!inf) { perror(infname); exit(1); } outf = fopen(outfname, "w"); if (!outf) { perror(outfname); exit(1); } state = EFR_encoder_create(dtx); if (!state) { perror("EFR_encoder_create()"); exit(1); } for (;;) { rc = read_input(inf, pcm, argv[1]); if (!rc) break; EFR_encode_frame(state, pcm, frame, &sp, &vad); frame2bits(frame, bits); bits[248] = vad; bits[249] = sp; emit_output(outf, bits + 4, 246); } fclose(outf); exit(0); }