| .\" |
| .\" Copyright 1992 by Jutta Degener and Carsten Bormann, Technische |
| .\" Universitaet Berlin. See the accompanying file "COPYRIGHT" for |
| .\" details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE. |
| .\" |
| .PU |
| .TH GSM_PRINT 3 |
| .SH NAME |
| gsm_print \(em GSM\ 06.10 supplementary function for debugging |
| .SH SYNOPSIS |
| #include "gsm.h" |
| #include <stdio.h> |
| |
| int gsm_print(f, g, frame); |
| .br |
| FILE * f; |
| .br |
| gsm g; |
| .br |
| gsm_frame frame; |
| .SH "DESCRIPTION" |
| Gsm is an implementation of the final draft GSM 06.10 |
| standard for full-rate speech transcoding, a lossy |
| speech compression algorithm. |
| The compressed form involves 76 variables with different numbers |
| of significant bits packed into 33 bytes. |
| .PP |
| If you are interested in investigating the details of this |
| coding scheme, gsm_print() can be used to dump the contents |
| of individual gsm_frames to a file pointer provided by |
| the application. |
| .PP |
| .SH "RETURN VALUE" |
| gsm_print() returns -1 if the frame is invalid, else 0. |
| .SH EXAMPLE |
| A single frame looks like this: |
| .br |
| .nf |
| LARc: 29 32 20 11 08 05 06 07 |
| #1: Nc 0040 bc 0 Mc 1 xmaxc 60 |
| 06 04 00 03 03 06 04 02 02 04 05 04 01 |
| #2: Nc 0045 bc 1 Mc 1 xmaxc 48 |
| 03 07 01 03 04 04 07 01 03 02 04 05 03 |
| #3: Nc 0091 bc 1 Mc 1 xmaxc 46 |
| 00 03 03 07 01 06 02 04 05 03 03 02 04 |
| #4: Nc 0120 bc 0 Mc 1 xmaxc 47 |
| 07 03 06 00 03 03 06 05 00 03 02 07 04 |
| .nf |
| .SH BUGS |
| Please direct bug reports to jutta@pobox.com and cabo@tzi.org. |
| .SH "SEE ALSO" |
| gsm(3), gsm_explode(3) |
