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annotate libgsmefr/tls_flags.c @ 477:4c9222d95647

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libtwamr encoder: always emit frame->mode = mode; In the original implementation of amr_encode_frame(), the 'mode' member of the output struct was set to 0xFF if the output frame type is TX_NO_DATA. This design was made to mimic the mode field (16-bit word) being set to 0xFFFF (or -1) in 3GPP test sequence format - but nothing actually depends on this struct member being set in any way, and amr_frame_to_tseq() generates the needed 0xFFFF on its own, based on frame->type being equal to TX_NO_DATA. It is simpler and more efficient to always set frame->mode to the actual encoding mode in amr_encode_frame(), and this new behavior has already been documented in doc/AMR-library-API description in anticipation of the present change.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 18 May 2024 22:30:42 +0000
parents 38326102fc43
children
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38326102fc43 libgsmefr: beginning to integrate code from ETSI
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1 /*
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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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
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3 * Boolean flags named Carry and Overflow that function like equally named
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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4 * processor state flags on many CPU architectures. They are not part
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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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
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6 * instead they are "short-term" globals much like UNIX errno.
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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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
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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
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10 * simultaneous calls is exactly the kind of application that would benefit
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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11 * from utilitizing all CPU cores), our current workaround is to use
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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12 * thread-local storage.
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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13 */
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38326102fc43 libgsmefr: beginning to integrate code from ETSI
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15 #include <stdint.h>
38326102fc43 libgsmefr: beginning to integrate code from ETSI
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16 #include "typedef.h"
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18 __thread Flag EFR__Carry, EFR__Overflow;