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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 32bc48faec4b
children
line wrap: on
line source

/*
********************************************************************************
*
*      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             : int_lpc.h
*      Purpose          : Interpolates the LSPs and converts to LPC parameters 
*
********************************************************************************
*/
#ifndef int_lpc_h
#define int_lpc_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "typedef.h"
 
/*
********************************************************************************
*                         DEFINITION OF DATA TYPES
********************************************************************************
*/
 
/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/
/*
**************************************************************************
*
*  Function    : Int_lpc_1and3
*  Purpose     : Interpolates the LSPs and converts to LPC parameters 
*                to get a different LP filter in each subframe.
*  Description : The 20 ms speech frame is divided into 4 subframes.
*                The LSPs are quantized and transmitted at the 2nd and 
*                4th subframes (twice per frame) and interpolated at the
*                1st and 3rd subframe.
*
*                      |------|------|------|------|
*                         sf1    sf2    sf3    sf4
*                   F0            Fm            F1
*      
*                 sf1:   1/2 Fm + 1/2 F0         sf3:   1/2 F1 + 1/2 Fm
*                 sf2:       Fm                  sf4:       F1
*  Returns     : void
*
**************************************************************************
*/
void Int_lpc_1and3 (
    Word16 lsp_old[],  /* i : LSP vector at the 4th subfr. of past frame (M) */
    Word16 lsp_mid[],  /* i : LSP vector at the 2nd subfr. of
                              present frame (M)                              */
    Word16 lsp_new[],  /* i : LSP vector at the 4th subfr. of
                              present frame (M)                              */
    Word16 Az[]        /* o : interpolated LP parameters in all subfr.
                              (AZ_SIZE)                                      */
);

/*
**************************************************************************
*
*  Function    : Int_lpc_1and3_2
*  Purpose     : Interpolation of the LPC parameters. Same as the Int_lpc
*                function but we do not recompute Az() for subframe 2 and
*                4 because it is already available.
*  Returns     : void
*
**************************************************************************
*/
void Int_lpc_1and3_2 (
    Word16 lsp_old[],  /* i : LSP vector at the 4th subfr. of past frame (M) */
    Word16 lsp_mid[],  /* i : LSP vector at the 2nd subframe of
                             present frame (M)                                  */
    Word16 lsp_new[],  /* i : LSP vector at the 4th subframe of
                             present frame (M)                                  */
    Word16 Az[]        /* o :interpolated LP parameters
                             in subframes 1 and 3 (AZ_SIZE)                     */
);

/*
**************************************************************************
*
*  Function    : Int_lpc_1to3
*  Purpose     : Interpolates the LSPs and converts to LPC parameters 
*                to get a different LP filter in each subframe.
*  Description : The 20 ms speech frame is divided into 4 subframes.
*                The LSPs are quantized and transmitted at the 4th 
*                subframes (once per frame) and interpolated at the
*                1st, 2nd and 3rd subframe.
*
*                      |------|------|------|------|
*                         sf1    sf2    sf3    sf4
*                   F0                          F1
*      
*                 sf1:   3/4 F0 + 1/4 F1         sf3:   1/4 F0 + 3/4 F1
*                 sf2:   1/2 F0 + 1/2 F1         sf4:       F1
*  Returns     : void
*
**************************************************************************
*/
void Int_lpc_1to3 (
    Word16 lsp_old[], /* i : LSP vector at the 4th SF of past frame (M)      */
    Word16 lsp_new[], /* i : LSP vector at the 4th SF of present frame (M)   */
    Word16 Az[]       /* o : interpolated LP parameters in all SFs (AZ_SIZE) */
);
 
/*
**************************************************************************
*
*  Function    : Int_lpc_1to3_2
*  Purpose     : Interpolation of the LPC parameters. Same as the Int_lpc
*                function but we do not recompute Az() for subframe 4
*                because it is already available.
*  Returns     : void
*
**************************************************************************
*/
void Int_lpc_1to3_2 (
    Word16 lsp_old[],  /* i : LSP vector at the 4th SF of past frame (M) */
    Word16 lsp_new[],  /* i : LSP vector at the 4th SF present frame (M) */
    Word16 Az[]        /* o :interpolated LP parameters in SFs 1, 2, 3 
                             (AZ_SIZE)                                   */
);
 
#endif