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annotate libtest/tw5reader.h @ 605:63f774192906

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gsmhr_decoder_twts002_in(): set BFI=1 SID=1 for invalid SID When a received TW-TS-002 RTP payload indicates invalid SID, which of the 3 possible BFI/SID combinations should we pass to our internal ETSI-based speech decoder or TFO engine? Our original code passed BFI=0 SID=1, but upon further reflection, BFI=1 SID=1 is a better choice. In the corner case where received invalid SID is fed to a full decoder in homed state, setting BFI=1 allows that decoder to emit zeros on PCM and stay homed, instead of launching into full decoding.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 04 Dec 2025 21:01:46 +0000
parents 4d2cccaeb4a7
children
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1 /*
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2 * This header file defines the interface to our reader function for
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3 * hexadecimal RTP frame sequence files in TW-TS-005 format.
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4 *
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5 * twts005_read_frame() return values are:
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6 * 1 = successfully read valid frame
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7 * 0 = normal EOF
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8 * -1 = read line with invalid content
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9 * -2 = line too long or missing newline
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10 *
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11 * The reader function skips blank, whitespace-only and comment lines,
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12 * returning only actual frames. lineno variable must be initialized to 0
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13 * by the application program, but not touched otherwise. In case of an
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14 * error, this variable will hold the line number at which the error was
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15 * encountered.
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16 */
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17
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18 #define TWTS005_MAX_FRAME 40
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20 int twts005_read_frame(FILE *hexf, unsigned *lineno, uint8_t *frame,
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21 unsigned *lenp);