FreeCalypso > hg > gsm-codec-lib
annotate libgsmefr/tls_flags.c @ 555:62943a1ad64e
doc/FR1-Rx-DTX-detail: grammar fix
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 11 Oct 2024 00:22:47 +0000 |
parents | 38326102fc43 |
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38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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2 * Unfortunately the code we got from ETSI makes heavy use of two global |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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3 * Boolean flags named Carry and Overflow that function like equally named |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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4 * processor state flags on many CPU architectures. They are not part |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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5 * of persistent codec session state for either the encoder or the decoder, |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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6 * instead they are "short-term" globals much like UNIX errno. |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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7 * |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 * Given this unfortunate reality plus the natural desire to make our |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9 * EFR library thread-safe (a transcoding MGW handling a large volume of |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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10 * simultaneous calls is exactly the kind of application that would benefit |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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11 * from utilitizing all CPU cores), our current workaround is to use |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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12 * thread-local storage. |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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13 */ |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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15 #include <stdint.h> |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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16 #include "typedef.h" |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 |
38326102fc43
libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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18 __thread Flag EFR__Carry, EFR__Overflow; |