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annotate libgsmefr/memops.h @ 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 d285877fc4cc
children
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1 /*
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2 * The original code from ETSI uses its own Copy() and Set_zero()
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3 * functions, operating on Word16 elements. Here we implement them
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4 * as static inline functions wrapping around memcpy and memset.
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5 */
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6
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7 #include <string.h>
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8
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9 static inline void Copy (
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10 const Word16 x[], /* (i) : input vector */
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11 Word16 y[], /* (o) : output vector */
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12 Word16 L /* (i) : vector length */
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13 )
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14 {
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15 memcpy(y, x, L * 2);
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16 }
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17
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18 static inline void Set_zero (
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19 Word16 x[], /* (o) : vector to clear */
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20 Word16 L /* (i) : length of vector */
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21 )
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22 {
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23 memset(x, 0, L * 2);
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24 }