FreeCalypso > hg > gsm-codec-lib
view libtwamr/c2_9pf.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 | ee64aabcc7a0 |
| 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 : c2_9pf.h * Purpose : Searches a 9 bit algebraic codebook containing * 2 pulses in a frame of 40 samples. * ***************************************************************************** */ #ifndef c2_9pf_h #define c2_9pf_h "$Id $" /* ***************************************************************************** * INCLUDE FILES ***************************************************************************** */ #include "typedef.h" /* ***************************************************************************** * LOCAL VARIABLES AND TABLES ***************************************************************************** */ /* ***************************************************************************** * DEFINITION OF DATA TYPES ***************************************************************************** */ /* ***************************************************************************** * DECLARATION OF PROTOTYPES ***************************************************************************** */ /************************************************************************* * * FUNCTION: code_2i40_9bits() * * PURPOSE: Searches a 9 bit algebraic codebook containing 2 pulses * in a frame of 40 samples. * * DESCRIPTION: * The code length is 40, containing 2 nonzero pulses: i0...i1. * All pulses can have two possible amplitudes: +1 or -1. * Pulse i0 can have 8 possible positions, pulse i1 can have * 8 positions. Also coded is which track pair should be used, * i.e. first or second pair. Where each pair contains 2 tracks. * * First subframe: * first i0 : 0, 5, 10, 15, 20, 25, 30, 35. * i1 : 2, 7, 12, 17, 22, 27, 32, 37. * second i0 : 1, 6, 11, 16, 21, 26, 31, 36. * i1 : 3, 8, 13, 18, 23, 28, 33, 38. * * Second subframe: * first i0 : 0, 5, 10, 15, 20, 25, 30, 35. * i1 : 3, 8, 13, 18, 23, 28, 33, 38. * second i0 : 2, 7, 12, 17, 22, 27, 32, 37. * i1 : 4, 9, 14, 19, 24, 29, 34, 39. * * Third subframe: * first i0 : 0, 5, 10, 15, 20, 25, 30, 35. * i1 : 2, 7, 12, 17, 22, 27, 32, 37. * second i0 : 1, 6, 11, 16, 21, 26, 31, 36. * i1 : 4, 9, 14, 19, 24, 29, 34, 39. * * Fourth subframe: * first i0 : 0, 5, 10, 15, 20, 25, 30, 35. * i1 : 3, 8, 13, 18, 23, 28, 33, 38. * second i0 : 1, 6, 11, 16, 21, 26, 31, 36. * i1 : 4, 9, 14, 19, 24, 29, 34, 39. * *************************************************************************/ Word16 code_2i40_9bits( Word16 subNr, /* i : subframe number */ Word16 x[], /* i : target vector */ Word16 h[], /* i : impulse response of weighted synthesis filter */ /* h[-L_subfr..-1] must be set to zero. */ Word16 T0, /* i : Pitch lag */ Word16 pitch_sharp, /* i : Last quantized pitch gain */ Word16 code[], /* o : Innovative codebook */ Word16 y[], /* o : filtered fixed codebook excitation */ Word16 * sign /* o : Signs of 2 pulses */ ); #endif