FreeCalypso > hg > gsm-codec-lib
view libtwamr/agc.h @ 585:3c6bf0d26ee7 default tip
TW-TS-005 reader: fix maximum line length bug
TW-TS-005 section 4.1 states:
The maximum allowed length of each line is 80 characters, not
including the OS-specific newline encoding.
The implementation of this line length limit in the TW-TS-005 hex file
reader function in the present suite was wrong, such that lines of
the full maximum length could not be read. Fix it.
Note that this bug affects comment lines too, not just actual RTP
payloads. Neither Annex A nor Annex B features an RTP payload format
that goes to the maximum of 40 bytes, but if a comment line goes to
the maximum allowed length of 80 characters not including the
terminating newline, the bug will be triggered, necessitating
the present fix.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Tue, 25 Feb 2025 07:49:28 +0000 |
| parents | 6b33f3ba4289 |
| children |
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/* ***************************************************************************** * * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 * R99 Version 3.3.0 * REL-4 Version 4.1.0 * ***************************************************************************** * * File : agc.h * Purpose : Scales the postfilter output on a subframe basis * : by automatic control of the subframe gain. * ***************************************************************************** */ #ifndef agc_h #define agc_h "$Id $" /* ***************************************************************************** * INCLUDE FILES ***************************************************************************** */ #include "typedef.h" /* ***************************************************************************** * DEFINITION OF DATA TYPES ***************************************************************************** */ typedef struct { Word16 past_gain; } agcState; /* ***************************************************************************** * DECLARATION OF PROTOTYPES ***************************************************************************** */ /* ************************************************************************** * * Function : agc_reset * Purpose : Reset of agc (i.e. set state memory to 1.0) * Returns : 0 on success * ************************************************************************** */ void agc_reset (agcState *st); /* ************************************************************************** * * Function : agc * Purpose : Scales the postfilter output on a subframe basis * Description : sig_out[n] = sig_out[n] * gain[n]; * where gain[n] is the gain at the nth sample given by * gain[n] = agc_fac * gain[n-1] + (1 - agc_fac) g_in/g_out * g_in/g_out is the square root of the ratio of energy at * the input and output of the postfilter. * ************************************************************************** */ int agc ( agcState *st, /* i/o : agc state */ Word16 *sig_in, /* i : postfilter input signal, (l_trm) */ Word16 *sig_out, /* i/o : postfilter output signal, (l_trm) */ Word16 agc_fac, /* i : AGC factor */ Word16 l_trm /* i : subframe size */ ); /* ************************************************************************** * * Function: agc2 * Purpose: Scales the excitation on a subframe basis * ************************************************************************** */ void agc2 ( Word16 *sig_in, /* i : postfilter input signal */ Word16 *sig_out, /* i/o : postfilter output signal */ Word16 l_trm /* i : subframe size */ ); #endif