static int write_header(sox_format_t * ft)
{
char * comment = lsx_cat_comments(ft->oob.comments);
size_t len = min(FIXED_HDR - 26, strlen(comment)) + 1; /* null-terminated */
size_t info_len = max(4, (len + 3) & ~3u); /* Minimum & multiple of 4 bytes */
int i = ft->encoding.reverse_bytes == MACHINE_IS_BIGENDIAN? 0 : 2;
sox_bool error = sox_false
||lsx_writechars(ft, id[i].str, sizeof(id[i].str))
||lsx_writef(ft, ft->signal.rate)
||lsx_writedw(ft, ft->signal.channels)
||lsx_writedw(ft, ft_enc(ft->encoding.bits_per_sample, ft->encoding.encoding))
||lsx_writew(ft, SF_COMMENT)
||lsx_writew(ft, (unsigned) info_len)
||lsx_writechars(ft, comment, len)
||lsx_padbytes(ft, FIXED_HDR - 20 - len);
free(comment);
return error? SOX_EOF: SOX_SUCCESS;
}
static int write_header(sox_format_t * ft)
{
char * comments = lsx_cat_comments(ft->oob.comments);
size_t comments_len = strlen(comments);
size_t comments_bytes = (comments_len + 7) & ~7u; /* Multiple of 8 bytes */
uint64_t size = ft->olength? ft->olength : ft->signal.length;
sox_bool error = sox_false
||lsx_writedw(ft, *(uint32_t *)&magic[MACHINE_IS_BIGENDIAN])
||lsx_writedw(ft, FIXED_HDR + (unsigned)comments_bytes)
||lsx_writeqw(ft, size)
||lsx_writedf(ft, ft->signal.rate)
||lsx_writedw(ft, ft->signal.channels)
||lsx_writedw(ft, (unsigned)comments_len)
||lsx_writechars(ft, comments, comments_len)
||lsx_padbytes(ft, comments_bytes - comments_len);
free(comments);
return error? SOX_EOF: SOX_SUCCESS;
}
static int write_header(sox_format_t * ft)
{
char buf[128];
uint64_t samples = (ft->olength ? ft->olength : ft->signal.length) / ft->signal.channels;
lsx_writes(ft, "NIST_1A\n");
lsx_writes(ft, " 1024\n");
if (samples) {
sprintf(buf, "sample_count -i %" PRIu64 "\n", samples);
lsx_writes(ft, buf);
}
sprintf(buf, "sample_n_bytes -i %d\n", ft->encoding.bits_per_sample >> 3);
lsx_writes(ft, buf);
sprintf(buf, "channel_count -i %d\n", ft->signal.channels);
lsx_writes(ft, buf);
if (ft->encoding.bits_per_sample == 8)
sprintf(buf, "sample_byte_format -s1 1\n");
else
sprintf(buf, "sample_byte_format -s2 %s\n",
ft->encoding.reverse_bytes != MACHINE_IS_BIGENDIAN ? "10" : "01");
lsx_writes(ft, buf);
sprintf(buf, "sample_rate -i %u\n", (unsigned) (ft->signal.rate + .5));
lsx_writes(ft, buf);
if (ft->encoding.encoding == SOX_ENCODING_ULAW)
lsx_writes(ft, "sample_coding -s4 ulaw\n");
else
lsx_writes(ft, "sample_coding -s3 pcm\n");
lsx_writes(ft, "end_head\n");
lsx_padbytes(ft, 1024 - (size_t)lsx_tell(ft));
return SOX_SUCCESS;
}
