static int startread(sox_format_t * ft) { char magic_[sizeof(magic[0])]; uint32_t headers_bytes, num_channels, comments_bytes; uint64_t num_samples; double rate; if (lsx_readdw(ft, (uint32_t *)&magic_)) return SOX_EOF; if (memcmp(magic[MACHINE_IS_BIGENDIAN], magic_, sizeof(magic_))) { if (memcmp(magic[MACHINE_IS_LITTLEENDIAN], magic_, sizeof(magic_))) { lsx_fail_errno(ft, SOX_EHDR, "can't find sox file format identifier"); return SOX_EOF; } ft->encoding.reverse_bytes = !ft->encoding.reverse_bytes; lsx_report("file is opposite endian"); } if (lsx_readdw(ft, &headers_bytes) || lsx_readqw(ft, &num_samples) || lsx_readdf(ft, &rate) || lsx_readdw(ft, &num_channels) || lsx_readdw(ft, &comments_bytes)) return SOX_EOF; if (((headers_bytes + 4) & 7) || headers_bytes < FIXED_HDR + comments_bytes || (num_channels > 65535)) /* Reserve top 16 bits */ { lsx_fail_errno(ft, SOX_EHDR, "invalid sox file format header"); return SOX_EOF; } if (comments_bytes) { char * buf = lsx_calloc(1, (size_t)comments_bytes + 1); /* ensure nul-terminated */ if (lsx_readchars(ft, buf, (size_t)comments_bytes) != SOX_SUCCESS) { free(buf); return SOX_EOF; } sox_append_comments(&ft->oob.comments, buf); free(buf); } /* Consume any bytes after the comments and before the start of the audio * block. These may include comment padding up to a multiple of 8 bytes, * and further header information that might be defined in future. */ lsx_seeki(ft, (off_t)(headers_bytes - FIXED_HDR - comments_bytes), SEEK_CUR); return lsx_check_read_params( ft, num_channels, rate, SOX_ENCODING_SIGN2, 32, (off_t)num_samples, sox_true); }
static int startread(sox_format_t * ft) { char magic[4]; float rate; uint32_t channels, ft_encoding; unsigned i, bits_per_sample; sox_encoding_t encoding; uint16_t code, size; if (lsx_readchars(ft, magic, sizeof(magic))) return SOX_EOF; for (i = 0; id[i].desc && memcmp(magic, id[i].str, sizeof(magic)); ++i); if (!id[i].desc) { lsx_fail_errno(ft, SOX_EHDR, "sf: can't find IRCAM identifier"); return SOX_EOF; } lsx_report("found %s identifier", id[i].desc); ft->encoding.reverse_bytes = id[i].reverse_bytes; if (lsx_readf(ft, &rate) || lsx_readdw(ft, &channels) || lsx_readdw(ft, &ft_encoding)) return SOX_EOF; if (!(encoding = sox_enc(ft_encoding, &bits_per_sample))) { lsx_fail_errno(ft, SOX_EFMT, "sf: unsupported encoding %#x)", ft_encoding); return SOX_EOF; } do { if (lsx_readw(ft, &code) || lsx_readw(ft, &size)) return SOX_EOF; if (code == SF_COMMENT) { char * buf = lsx_calloc(1, (size_t)size + 1); /* +1 ensures null-terminated */ if (lsx_readchars(ft, buf, (size_t) size) != SOX_SUCCESS) { free(buf); return SOX_EOF; } sox_append_comments(&ft->oob.comments, buf); free(buf); } else if (lsx_skipbytes(ft, (size_t) size)) return SOX_EOF; } while (code); if (lsx_skipbytes(ft, FIXED_HDR - (size_t)lsx_tell(ft))) return SOX_EOF; return lsx_check_read_params(ft, channels, rate, encoding, bits_per_sample, (uint64_t)0, sox_true); }
static int start_read(sox_format_t * ft) { char buf[sizeof(ID1)]; uint32_t num_samples; if (lsx_readchars(ft, buf, sizeof(buf)) || lsx_readdw(ft, &num_samples) || lsx_skipbytes(ft, sizeof(ID2))) return SOX_EOF; if (memcmp(ID1, buf, sizeof(buf))) { lsx_fail_errno(ft, SOX_EHDR, "wve: can't find Psion identifier"); return SOX_EOF; } return lsx_check_read_params(ft, 1, 8000., SOX_ENCODING_ALAW, 8, (off_t)num_samples, sox_true); }
static int startread(sox_format_t * ft) { priv_t * avr = (priv_t *)ft->priv; int rc; lsx_reads(ft, avr->magic, (size_t)4); if (strncmp (avr->magic, AVR_MAGIC, (size_t)4)) { lsx_fail_errno(ft,SOX_EHDR,"AVR: unknown header"); return(SOX_EOF); } lsx_readbuf(ft, avr->name, sizeof(avr->name)); lsx_readw (ft, &(avr->mono)); if (avr->mono) { ft->signal.channels = 2; } else { ft->signal.channels = 1; } lsx_readw (ft, &(avr->rez)); if (avr->rez == 8) { ft->encoding.bits_per_sample = 8; } else if (avr->rez == 16) { ft->encoding.bits_per_sample = 16; } else { lsx_fail_errno(ft,SOX_EFMT,"AVR: unsupported sample resolution"); return(SOX_EOF); } lsx_readw (ft, &(avr->sign)); if (avr->sign) { ft->encoding.encoding = SOX_ENCODING_SIGN2; } else { ft->encoding.encoding = SOX_ENCODING_UNSIGNED; } lsx_readw (ft, &(avr->loop)); lsx_readw (ft, &(avr->midi)); lsx_readdw (ft, &(avr->rate)); /* * No support for AVRs created by ST-Replay, * Replay Proffesional and PRO-Series 12. * * Just masking the upper byte out. */ ft->signal.rate = (avr->rate & 0x00ffffff); lsx_readdw (ft, &(avr->size)); lsx_readdw (ft, &(avr->lbeg)); lsx_readdw (ft, &(avr->lend)); lsx_readw (ft, &(avr->res1)); lsx_readw (ft, &(avr->res2)); lsx_readw (ft, &(avr->res3)); lsx_readbuf(ft, avr->ext, sizeof(avr->ext)); lsx_readbuf(ft, avr->user, sizeof(avr->user)); rc = lsx_rawstartread (ft); if (rc) return rc; return(SOX_SUCCESS); }