FreeCalypso > hg > gsm-codec-lib
changeset 588:4d6ccca0c687
amrconv: new program amr-hexoa2ietf
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 06 Nov 2025 20:12:15 +0000 |
| parents | 7bce90c844c2 |
| children | e414d138c607 |
| files | .hgignore amrconv/Makefile amrconv/hex2ietf.c |
| diffstat | 3 files changed, 87 insertions(+), 2 deletions(-) [+] |
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--- a/.hgignore Wed Mar 12 20:38:23 2025 +0000 +++ b/.hgignore Thu Nov 06 20:12:15 2025 +0000 @@ -5,6 +5,7 @@ ^amrconv/amr-cod-parse$ ^amrconv/amr-cod2ietf$ +^amrconv/amr-hexoa2ietf$ ^amrconv/amr-ietf-parse$ ^amrconv/amr-ietf2cod$ ^amrconv/gsm-amr2efr$
--- a/amrconv/Makefile Wed Mar 12 20:38:23 2025 +0000 +++ b/amrconv/Makefile Thu Nov 06 20:12:15 2025 +0000 @@ -1,5 +1,5 @@ -PROGS= amr-cod-parse amr-cod2ietf amr-ietf-parse amr-ietf2cod gsm-amr2efr \ - gsm-efr2amr +PROGS= amr-cod-parse amr-cod2ietf amr-hexoa2ietf amr-ietf-parse amr-ietf2cod \ + gsm-amr2efr gsm-efr2amr LIBTEST=../libtest/libtest.a include ../config.defs @@ -16,6 +16,8 @@ IETF2COD_OBJS= amr122bits.o amr_bits.o amr_common_tbl.o bitmanip.o ietf2cod.o \ ietf_common.o if1_unpack.o +HEX2IETF_OBJS= hex2ietf.o ietf_common.o + all: ${PROGS} amr-cod-parse: ${COD_PARSE_OBJS} @@ -24,6 +26,9 @@ amr-cod2ietf: ${COD2IETF_OBJS} ${CC} ${CFLAGS} -o $@ ${COD2IETF_OBJS} +amr-hexoa2ietf: ${HEX2IETF_OBJS} ${LIBTEST} + ${CC} ${CFLAGS} -o $@ ${HEX2IETF_OBJS} ${LIBTEST} + amr-ietf-parse: ${IETF_PARSE_OBJS} ${CC} ${CFLAGS} -o $@ ${IETF_PARSE_OBJS}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/amrconv/hex2ietf.c Thu Nov 06 20:12:15 2025 +0000 @@ -0,0 +1,79 @@ +/* + * This program converts an AMR speech recording from TW-TS-005 Annex C OA/OAX + * hexadecimal format into the standard binary storage format of RFC 4867. + */ + +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include "../libtest/tw5reader.h" +#include "amr_defs.h" + +extern const char amr_file_hdr[IETF_HDR_LEN]; +extern const uint8_t extra_bytes_per_ft[9]; + +main(argc, argv) + char **argv; +{ + FILE *hexf, *outf; + unsigned lineno; + uint8_t frame[TWTS005_MAX_FRAME]; + unsigned frame_len, cmr, ft, if1_len; + int rc; + + if (argc != 3) { + fprintf(stderr, "usage: %s input.hex output.amr\n", argv[0]); + exit(1); + } + hexf = fopen(argv[1], "r"); + if (!hexf) { + perror(argv[1]); + exit(1); + } + lineno = 0; + outf = fopen(argv[2], "w"); + if (!outf) { + perror(argv[2]); + exit(1); + } + fwrite(amr_file_hdr, 1, IETF_HDR_LEN, outf); + for (;;) { + rc = twts005_read_frame(hexf, &lineno, frame, &frame_len); + if (rc < 0) { + fprintf(stderr, "%s line %u: not valid TW-TS-005\n", + argv[1], lineno); + exit(1); + } + if (!rc) + break; + if (frame_len == 0) { + putc(0x7C, outf); + continue; + } + if (frame_len < 2) { +inv_payload: fprintf(stderr, + "%s line %u: payload is not valid AMR OA\n", + argv[1], lineno); + exit(1); + } + cmr = frame[0] >> 4; + if (cmr > MR122 && cmr != MODE_NO_DATA) + goto inv_payload; + if (frame[1] & 0x80) + goto inv_payload; + ft = (frame[1] & 0x78) >> 3; + if (ft <= MRDTX) + if1_len = extra_bytes_per_ft[ft]; + else if (ft == MODE_NO_DATA) + if1_len = 0; + else + goto inv_payload; + if (frame_len < if1_len + 2) + goto inv_payload; + frame[1] &= 0xFC; + fwrite(frame + 1, 1, if1_len + 1, outf); + } + exit(0); +}