75 static int start_read(sox_format_t * ft)  in start_read()  argument
84   lsx_readdw(ft, &file_size);  in start_read()
87   if (file_size >= 2 && ft->seekable) {  in start_read()
91       lsx_readsw(ft, &int16);  in start_read()
94     if (lsx_seeki(ft, (off_t)sizeof(file_size), SEEK_SET) != 0)  in start_read()
97       lsx_warn("invalid checksum in input file %s", ft->filename);  in start_read()
100   lsx_skipbytes(ft, (size_t)(2 + 4 + 6)); /* Checksum, version, time stamp. */  in start_read()
102   lsx_readchars(ft, read_id, sizeof(read_id));  in start_read()
104     lsx_fail_errno(ft, SOX_EHDR, "gsrt: invalid file name in header");  in start_read()
108   lsx_readsw(ft, &ft_encoding);  in start_read()
112     ft->handler.read = NULL;  in start_read()
114   lsx_skipbytes(ft, PADDING_SIZE);  in start_read()
116   return lsx_check_read_params(ft, 1, 8000., encoding,  in start_read()
120 static int start_write(sox_format_t * ft)  in start_write()  argument
122   int i, encoding = ft_enc(ft->encoding.bits_per_sample, ft->encoding.encoding);  in start_write()
134   return lsx_writedw(ft, 0)  in start_write()
135       || lsx_writesw(ft, -checksum)  in start_write()
136       || lsx_writedw(ft, VERSION_)  in start_write()
137       || lsx_writesw(ft, t->tm_year + 1900)  in start_write()
138       || lsx_writesb(ft, t->tm_mon + 1)  in start_write()
139       || lsx_writesb(ft, t->tm_mday)  in start_write()
140       || lsx_writesb(ft, t->tm_hour)  in start_write()
141       || lsx_writesb(ft, t->tm_min)  in start_write()
142       || lsx_writechars(ft, id, sizeof(id))  in start_write()
143       || lsx_writesw(ft, encoding)  in start_write()
144       || lsx_padbytes(ft, PADDING_SIZE) ? SOX_EOF : SOX_SUCCESS;  in start_write()
148     sox_format_t * ft, sox_sample_t const * buf, size_t nsamp)  in write_samples()  argument
150   size_t n = min(nsamp, MAX_FILE_SIZE - (size_t)ft->tell_off);  in write_samples()
153   return lsx_rawwrite(ft, buf, n);  in write_samples()
156 static int stop_write(sox_format_t * ft)  in stop_write()  argument
158   long num_samples = ft->tell_off - HEADER_SIZE;  in stop_write()
162     lsx_rawwrite(ft, &pad, 1);  in stop_write()
165   if (ft->seekable) {  in stop_write()
166     unsigned i, file_size = ft->tell_off >> 1;  in stop_write()
169     if (!lsx_seeki(ft, (off_t)sizeof(uint32_t), SEEK_SET)) {  in stop_write()
170       lsx_readsw(ft, &int16);  in stop_write()
172       if (!lsx_seeki(ft, (off_t)HEADER_SIZE, SEEK_SET)) {  in stop_write()
174           lsx_readsw(ft, &int16);  in stop_write()
177         if (!lsx_seeki(ft, (off_t)0, SEEK_SET)) {  in stop_write()
178           lsx_writedw(ft, file_size);  in stop_write()
179           lsx_writesw(ft, -checksum);  in stop_write()
186       "length in file header will be unspecified", ft->filename);  in stop_write()