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annotate libtwamr/dtx_common.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 5a1d18542f8a
children
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5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c
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1 /*
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2 * This header file contains some common definitions that have been
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c
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3 * factored out of dtx_enc.h; the original code used the construct of
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c
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4 * dtx_dec.h including dtx_enc.h, but in the opinion of this developer
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c
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5 * it is better to factor out the common bits.
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6 */
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7
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8 #ifndef dtx_common_h
5a1d18542f8a libtwamr: integrate dtx_dec.c and dtx_enc.c
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9 #define dtx_common_h
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11 /*
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12 ********************************************************************************
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13 * LOCAL VARIABLES AND TABLES
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14 ********************************************************************************
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15 */
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16 #define DTX_HIST_SIZE 8
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17 #define DTX_ELAPSED_FRAMES_THRESH (24 + 7 -1)
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18 #define DTX_HANG_CONST 7 /* yields eight frames of SP HANGOVER */
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20 #endif