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annotate libtwamr/dhf_subst2.c @ 585:3c6bf0d26ee7 default tip

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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 fa0652115168
children
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fa0652115168 libtwamr: add amr_dhf_subst_efr2()
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
Mychaela Falconia <falcon@freecalypso.org>
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2 * The function implemented in this module is an aid for AMR-EFR interworking;
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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3 * it is meant to be invoked directly after amr_encode_frame(). It checks
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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4 * the encoder output for MR122 DHF and turns it into EFR DHF just like
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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5 * amr_dhf_subst_efr(), but only if the input PCM frame was an EHF. This
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
Mychaela Falconia <falcon@freecalypso.org>
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6 * slightly more complicated logic is needed in order to replicate the observed
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
Mychaela Falconia <falcon@freecalypso.org>
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7 * behavior of AMR-EFR speech encoder in the extant GSM network of T-Mobile USA.
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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8 */
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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9
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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10 #include "tw_amr.h"
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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11 #include "namespace.h"
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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12 #include "e_homing.h"
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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13
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
Mychaela Falconia <falcon@freecalypso.org>
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14 void amr_dhf_subst_efr2(struct amr_param_frame *frame, const int16_t *pcm)
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
Mychaela Falconia <falcon@freecalypso.org>
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15 {
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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16 if (encoder_homing_frame_test(pcm))
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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17 amr_dhf_subst_efr(frame);
fa0652115168 libtwamr: add amr_dhf_subst_efr2()
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18 }