FreeCalypso > hg > ice1-trau-tester
view ater/read_file.c @ 24:f49e57b0d1a2
ater: implement activ command
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 24 Jun 2024 18:48:36 +0000 |
parents | 5405c1573027 |
children | db39e8855f3d |
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/* * Here we implement the function that reads binary files * in our ad hoc format for TRAU testing. */ #include <sys/types.h> #include <sys/file.h> #include <sys/stat.h> #include <stdint.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "read_file.h" static int check_magic(const uint8_t *buf, unsigned nframes, bool *got_fr, bool *got_efr) { unsigned n; for (n = 0; n < nframes; n++) { switch (*buf & 0xF0) { case 0xC0: *got_efr = true; break; case 0xD0: *got_fr = true; break; default: return -1; } buf += 34; } return 0; } int read_binary_file(const char *filename, bool is_efr, uint8_t **bufret, unsigned *size_ret) { int fd, rc; struct stat st; uint8_t *buf; unsigned nframes; bool got_fr, got_efr; fd = open(filename, O_RDONLY); if (fd < 0) { perror(filename); return -1; } fstat(fd, &st); if (!S_ISREG(st.st_mode)) { close(fd); fprintf(stderr, "error: %s is not a regular file\n", filename); return -1; } if (!st.st_size) { close(fd); fprintf(stderr, "error: %s is an empty file\n", filename); return -1; } if (st.st_size % 34) { close(fd); fprintf(stderr, "error: size of %s is not a multiple of 34 bytes\n", filename); return -1; } buf = malloc(st.st_size); if (!buf) { close(fd); fprintf(stderr, "unable to malloc buffer for %s\n", filename); return -1; } read(fd, buf, st.st_size); close(fd); nframes = st.st_size / 34; got_fr = false; got_efr = false; rc = check_magic(buf, nframes, &got_fr, &got_efr); if (rc < 0 || got_fr && got_efr) { free(buf); fprintf(stderr, "error: %s is not a valid TRAU-UL test file\n", filename); return -1; } if (is_efr != got_efr) { free(buf); fprintf(stderr, "error: %s is for the wrong codec\n", filename); return -1; } *bufret = buf; *size_ret = nframes; return 0; }