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annotate libgsmefr/tls_flags.c @ 553:ebcf414b7d99

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doc/TFO-transform: describe details for FRv1, both modes
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 07 Oct 2024 08:24:24 +0000
parents 38326102fc43
children
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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>
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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>
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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>
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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>
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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>
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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>
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7 *
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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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>
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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>
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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>
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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>
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12 * thread-local storage.
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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13 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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15 #include <stdint.h>
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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16 #include "typedef.h"
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
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18 __thread Flag EFR__Carry, EFR__Overflow;