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annotate libtwamr/ietf_fo.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 ebe499058c63
children
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ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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1 /*
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2 * The function implemented in this module groks the first octet of
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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3 * an RFC 4867 payload and tells the calling application how many more
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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4 * bytes need to be read, or if the frame type is invalid.
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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5 */
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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6
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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7 #include <stdint.h>
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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8 #include "tw_amr.h"
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9
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10 static const uint8_t extra_bytes_per_ft[9] =
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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11 {12, 13, 15, 17, 19, 20, 26, 31, 5};
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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12
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13 int amr_ietf_grok_first_octet(uint8_t fo)
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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14 {
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15 uint8_t ft;
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16
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17 ft = (fo & 0x78) >> 3;
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18 if (ft == AMR_FT_NODATA)
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19 return 0;
ebe499058c63 libtwamr: implement API functions for RFC 4867 I/O
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20 if (ft > MRDTX)
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21 return -1;
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22 return extra_bytes_per_ft[ft];
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23 }