GSM_PRINT(3)
NAME
gsm_print -- GSM 06.10 supplementary function for debugging
SYNOPSIS
#include "gsm.h" #include <stdio.h> int gsm_print(f, g, frame); FILE * f; gsm g; gsm_frame frame;
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.
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.
RETURN VALUE
gsm_print() returns -1 if the frame is invalid, else 0.
EXAMPLE
- A single frame looks like this:
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
BUGS
Please direct bug reports to jutta@cs.tu-berlin.de and cabo@cs.tuberlin.de.