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annotate libtwamr/ietf_hdr.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 6fa27df6903b
children
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442
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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2 * This module provides one public const datum: RFC 4867 file header.
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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3 */
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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4
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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5 #include <stdint.h>
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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6 #include "tw_amr.h"
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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7
6fa27df6903b libtwamr: add file header public const datum
Mychaela Falconia <falcon@freecalypso.org>
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8 const uint8_t amr_file_header_magic[AMR_IETF_HDR_LEN] = "#!AMR\n";