FreeCalypso > hg > gsm-codec-lib

annotate libgsmfr2/silence_frame.c @ 485:751f06541fbb

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doc/Codec-utils: clarify lack of DHF in gsmfr-decode-rb
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 May 2024 01:47:22 +0000
parents a33edf624061
children
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6780b23654bd libgsmfrp: starting with the silence frame
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
6780b23654bd libgsmfrp: starting with the silence frame
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2 * Table 1 in section 6 of 3GPP TS 46.011 specifies a silence frame
6780b23654bd libgsmfrp: starting with the silence frame
Mychaela Falconia <falcon@freecalypso.org>
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3 * in the form of GSM 06.10 parameters; here we implement this exact
6780b23654bd libgsmfrp: starting with the silence frame
Mychaela Falconia <falcon@freecalypso.org>
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4 * silence frame in libgsm encoding, which is also RTP encoding.
6780b23654bd libgsmfrp: starting with the silence frame
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5 */
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a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
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7 #include <stdint.h>
a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
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8 #include "tw_gsmfr.h"
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a33edf624061 libgsmfr2: start with API definition and port of libgsmfrp code
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10 const uint8_t gsmfr_preproc_silence_frame[GSMFR_RTP_FRAME_LEN] = {
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11 0xDA, 0xA7, 0xAA, 0xA5, 0x1A,
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61cb83bd11ec GSM 06.11 silence frame: it's Nc=40 first, then bc=0
Mychaela Falconia <falcon@freecalypso.org>
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12 0x50, 0x20, 0x38, 0xE4, 0x6D, 0xB9, 0x1B,
61cb83bd11ec GSM 06.11 silence frame: it's Nc=40 first, then bc=0
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13 0x50, 0x20, 0x38, 0xE4, 0x6D, 0xB9, 0x1B,
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14 0x50, 0x20, 0x38, 0xE4, 0x6D, 0xB9, 0x1B,
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15 0x50, 0x20, 0x38, 0xE4, 0x6D, 0xB9, 0x1B,
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6780b23654bd libgsmfrp: starting with the silence frame
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16 };