FreeCalypso > hg > gsm-codec-lib
annotate libtest/local_endian.c @ 605:63f774192906
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> |
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| date | Thu, 04 Dec 2025 21:01:46 +0000 |
| parents | 9a9d05a8fc75 |
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1 /* |
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2 * This C module is our current best attempt at determining the local endian |
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3 * in a portable manner that (hopefully) won't come back to bite us when |
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4 * someone needs to compile our software under a different flavor of Unix. |
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5 */ |
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6 |
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7 #include <stdint.h> |
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8 #include <arpa/inet.h> |
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9 #include "local_endian.h" |
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10 |
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11 int is_native_big_endian(void) |
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12 { |
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13 uint16_t big_end_one; |
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14 |
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15 big_end_one = htons(1); |
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16 if (big_end_one == 1) |
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17 return 1; |
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18 else |
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19 return 0; |
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20 } |
