FreeCalypso > hg > gsm-codec-lib
changeset 221:6555dae764b3
miscutil: new program pcm16-check13
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 23 Apr 2023 03:36:25 +0000 |
| parents | c4c45148cde1 |
| children | 842136bbd0da |
| files | .hgignore miscutil/Makefile miscutil/pcm16-check13.c |
| diffstat | 3 files changed, 68 insertions(+), 1 deletions(-) [+] |
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--- a/.hgignore Sat Apr 22 20:57:11 2023 +0000 +++ b/.hgignore Sun Apr 23 03:36:25 2023 +0000 @@ -42,6 +42,7 @@ ^frtest/gsmfr-preproc$ ^miscutil/gsmrec-dump$ +^miscutil/pcm16-check13$ ^miscutil/pcm16-raw2wav$ ^miscutil/pcm16-to-alaw$ ^miscutil/pcm16-to-ulaw$
--- a/miscutil/Makefile Sat Apr 22 20:57:11 2023 +0000 +++ b/miscutil/Makefile Sun Apr 23 03:36:25 2023 +0000 @@ -1,6 +1,7 @@ CC= gcc CFLAGS= -O2 -PROGS= gsmrec-dump pcm16-raw2wav pcm16-to-alaw pcm16-to-ulaw pcm16-wav2raw +PROGS= gsmrec-dump pcm16-check13 pcm16-raw2wav pcm16-to-alaw pcm16-to-ulaw \ + pcm16-wav2raw LIBEFR= ../libgsmefr/libgsmefr.a LIBTEST=../libtest/libtest.a INSTBIN=/opt/freecalypso/bin @@ -10,6 +11,9 @@ gsmrec-dump: gsmrec-dump.o ${LIBTEST} ${LIBEFR} ${CC} ${CFLAGS} -o $@ gsmrec-dump.o ${LIBTEST} ${LIBEFR} -lgsm +pcm16-check13: pcm16-check13.c + ${CC} ${CFLAGS} -o $@ $@.c + pcm16-raw2wav: raw2wav.o ${LIBTEST} ${CC} ${CFLAGS} -o $@ raw2wav.o ${LIBTEST}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/miscutil/pcm16-check13.c Sun Apr 23 03:36:25 2023 +0000 @@ -0,0 +1,62 @@ +/* + * This program reads a 16-bit PCM recording in raw format (robe by default, + * or LE with -l option) and checks whether or not every sample fits into + * left-justified 13 bits, with the 3 least significant bits of every 16-bit + * sample cleared. + */ + +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> + +main(argc, argv) + char **argv; +{ + int little_endian; + char *infname; + FILE *inf; + unsigned sample_count; + uint8_t inb[2]; + uint16_t ins, lowbits; + int cc; + + if (argc == 2 && argv[1][0] != '-') { + little_endian = 0; + infname = argv[1]; + } else if (argc == 3 && !strcmp(argv[1], "-l")) { + little_endian = 1; + infname = argv[2]; + } else { + fprintf(stderr, "usage: %s [-l] input.pcm16\n", argv[0]); + exit(1); + } + inf = fopen(infname, "r"); + if (!inf) { + perror(infname); + exit(1); + } + for (sample_count = 0; ; sample_count++) { + cc = fread(inb, 1, 2, inf); + if (cc <= 0) + break; + if (cc & 1) { + fprintf(stderr, "error: %s has odd number of bytes\n", + infname); + exit(1); + } + if (little_endian) + ins = ((uint16_t) inb[1] << 8) | ((uint16_t) inb[0]); + else + ins = ((uint16_t) inb[0] << 8) | ((uint16_t) inb[1]); + lowbits = ins & 7; + if (lowbits) { + fprintf(stderr, + "check13 fail: %s sample #%u low 3 bits are %u\n", + infname, sample_count, lowbits); + exit(1); + } + } + exit(0); +}