FreeCalypso > hg > gsm-codec-lib
view amrtest/encode.c @ 474:285381a001fc
new program gsmfr-dlcap-sync
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Wed, 15 May 2024 06:20:59 +0000 |
parents | 526a7f0e027d |
children |
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/* * twamr-encode is a speech encoder utility going from WAV input * to RFC 4867 storage format (.amr) output. It logically replaces * amrnb-enc from opencore-amr package, but its command line structure * for specifying AMR modes follows that of twamr-tseq-enc. */ #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> #include "../libtwamr/tw_amr.h" #include "../libtest/wavreader.h" #include "../libtest/wavrdhelp.h" main(argc, argv) char **argv; { char *infname, *outfname, *mode_arg; void *wav; FILE *outf; struct amr_encoder_state *state; enum Mode mode_val; int16_t pcm[160]; struct amr_param_frame frame; uint8_t out_bytes[AMR_IETF_MAX_PL]; int opt, dtx = 0, vad2 = 0, use_mode_file = 0, rc; unsigned nbytes; extern int optind; while ((opt = getopt(argc, argv, "d2")) != EOF) { switch (opt) { case 'd': dtx = 1; continue; case '2': vad2 = 1; continue; default: usage: fprintf(stderr, "usage: %s [-d] [-2] input.wav mode output.amr\n", argv[0]); exit(1); } } if (argc != optind + 3) goto usage; infname = argv[optind]; mode_arg = argv[optind+1]; outfname = argv[optind+2]; wav = wav_read_open(infname); if (!wav) { perror(infname); exit(1); } rc = wavrd_check_header(wav, infname); if (rc < 0) exit(1); /* error msg already printed */ if (!strncmp(mode_arg, "file:", 5)) { open_mode_file(mode_arg + 5); use_mode_file = 1; } else { rc = grok_mode_name(mode_arg, &mode_val); if (rc < 0) { fprintf(stderr, "error: invalid mode argument \"%s\"\n", mode_arg); exit(1); } } outf = fopen(outfname, "w"); if (!outf) { perror(outfname); exit(1); } state = amr_encoder_create(dtx, vad2); if (!state) { perror("amr_encoder_create()"); exit(1); } fwrite(amr_file_header_magic, 1, AMR_IETF_HDR_LEN, outf); for (;;) { rc = wavrd_get_pcm_block(wav, pcm); if (!rc) break; if (use_mode_file) read_mode_file_line(&mode_val); amr_encode_frame(state, mode_val, pcm, &frame); nbytes = amr_frame_to_ietf(&frame, out_bytes); fwrite(out_bytes, 1, nbytes, outf); } fclose(outf); exit(0); }