static Xen g_mus_header_writable(Xen head, Xen data)
{
#define H_mus_header_writable "(" S_mus_header_writable " header-type sample-type) returns " PROC_TRUE " if the header can handle the sample type"
Xen_check_type(Xen_is_integer(head), head, 1, S_mus_header_writable, "a header type");
Xen_check_type(Xen_is_integer(data), data, 2, S_mus_header_writable, "a sample type");
return(C_bool_to_Xen_boolean(mus_header_writable((mus_header_t)Xen_integer_to_C_int(head), (mus_sample_t)Xen_integer_to_C_int(data))));
}
int open_temp_file(const char *ofile, int chans, file_info *hdr, io_error_t *err)
{
/* returns io fd */
int ofd, sl_err = MUS_NO_ERROR;
if (!(mus_header_writable(hdr->type, hdr->format)))
{
hdr->type = default_output_header_type(ss);
if (mus_header_writable(hdr->type, default_output_data_format(ss)))
hdr->format = default_output_data_format(ss);
else
{
/* was default_output_* here, but that's for the user's output, not ours */
hdr->type = MUS_NEXT;
hdr->format = MUS_OUT_FORMAT;
}
}
(*err) = snd_write_header(ofile, hdr->type, hdr->srate, chans, 0, hdr->format, hdr->comment, hdr->loops);
if ((*err) != IO_NO_ERROR)
{
/* -1 as fd */
return(-1);
}
ofd = snd_reopen_write(ofile);
if (ofd == -1)
{
(*err) = IO_CANT_REOPEN_FILE;
return(-1);
}
hdr->data_location = mus_header_data_location(); /* header might have changed size (aiff extras) */
sl_err = snd_file_open_descriptors(ofd,
ofile,
hdr->format,
hdr->data_location,
chans,
hdr->type);
if (sl_err != MUS_NO_ERROR)
(*err) = sndlib_error_to_snd(sl_err);
lseek(ofd, hdr->data_location, SEEK_SET);
return(ofd);
}