FreeCalypso > hg > gsm-codec-lib
view efrtest/etsi-dec.c @ 477:4c9222d95647
libtwamr encoder: always emit frame->mode = mode;
In the original implementation of amr_encode_frame(), the 'mode' member
of the output struct was set to 0xFF if the output frame type is TX_NO_DATA.
This design was made to mimic the mode field (16-bit word) being set to
0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends
on this struct member being set in any way, and amr_frame_to_tseq()
generates the needed 0xFFFF on its own, based on frame->type being equal
to TX_NO_DATA.
It is simpler and more efficient to always set frame->mode to the actual
encoding mode in amr_encode_frame(), and this new behavior has already
been documented in doc/AMR-library-API description in anticipation of
the present change.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 18 May 2024 22:30:42 +0000 |
parents | 9f354d2aea13 |
children |
line wrap: on
line source
/* * gsmefr-etsi-dec is a test program for our EFR decoder: it reads ETSI's * .dec format as input and writes raw 16-bit PCM (same as ETSI's *.out) * 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 * by default, or in BE byte order if -b option is given. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "../libgsmefr/gsm_efr.h" #include "etsi.h" main(argc, argv) char **argv; { int big_endian; char *infname, *outfname; FILE *inf, *outf; struct EFR_decoder_state *state; unsigned frame_no; uint8_t input_bits[ETSI_DEC_NWORDS], frame[EFR_RTP_FRAME_LEN]; int16_t pcm[160]; int rc; if (argc == 3 && argv[1][0] != '-') { big_endian = 0; infname = argv[1]; outfname = argv[2]; } else if (argc == 4 && !strcmp(argv[1], "-b")) { big_endian = 1; infname = argv[2]; outfname = argv[3]; } else { fprintf(stderr, "usage: %s [-b] input.dec output.out\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_decoder_create(); if (!state) { perror("EFR_decoder_create()"); exit(1); } for (frame_no = 0; ; frame_no++) { rc = read_etsi_bits(inf, big_endian, input_bits, ETSI_DEC_NWORDS, infname); if (!rc) break; if (input_bits[0] > 1) { fprintf(stderr, "error in %s frame #%u: BFI > 1\n", infname, frame_no); exit(1); } bits2frame(input_bits + 1, frame, infname, frame_no); if (input_bits[245] > 2) { fprintf(stderr, "error in %s frame #%u: SID > 2\n", infname, frame_no); exit(1); } if (input_bits[246] > 1) { fprintf(stderr, "error in %s frame #%u: TAF > 1\n", infname, frame_no); exit(1); } rc = EFR_sid_classify(frame); if (input_bits[245] != rc) { fprintf(stderr, "warning: frame #%u has mismatching SID (file says %u, analysis yields %d)\n", frame_no, input_bits[245], rc); } EFR_decode_frame(state, frame, input_bits[0], input_bits[246], pcm); if (big_endian) write_pcm_be(outf, pcm); else write_pcm_le(outf, pcm); } fclose(outf); exit(0); }