FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/ietf_fo.c @ 449:2af2b5c12268
Library-versions: libtwamr is officially version 1.0.0
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 10 May 2024 01:43:05 +0000 |
parents | ebe499058c63 |
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rev | line source |
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ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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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
Mychaela Falconia <falcon@freecalypso.org>
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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
Mychaela Falconia <falcon@freecalypso.org>
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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
Mychaela Falconia <falcon@freecalypso.org>
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5 */ |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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7 #include <stdint.h> |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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8 #include "tw_amr.h" |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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9 |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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10 static const uint8_t extra_bytes_per_ft[9] = |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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11 {12, 13, 15, 17, 19, 20, 26, 31, 5}; |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
parents:
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12 |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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13 int amr_ietf_grok_first_octet(uint8_t fo) |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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14 { |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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15 uint8_t ft; |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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16 |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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17 ft = (fo & 0x78) >> 3; |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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18 if (ft == AMR_FT_NODATA) |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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19 return 0; |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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20 if (ft > MRDTX) |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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21 return -1; |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
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22 return extra_bytes_per_ft[ft]; |
ebe499058c63
libtwamr: implement API functions for RFC 4867 I/O
Mychaela Falconia <falcon@freecalypso.org>
parents:
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23 } |