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annotate dev/mk-256bytes.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 bbdefd2ef950
children
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bbdefd2ef950 dev: new program mk-256bytes
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1 /*
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2 * This program generates a binary file of 256 bytes, containing every
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3 * possible octet value in linearly increasing order. The purpose of this
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4 * datum is testing of A-linear-A and mu-linear-mu PCM conversions: we need
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5 * to ensure that each of those sequences is an identity transform for all
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6 * possible PCM octet values.
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7 */
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8
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11
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12 main(argc, argv)
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13 char **argv;
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14 {
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15 FILE *outf;
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16 unsigned val;
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17
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18 if (argc != 2) {
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19 fprintf(stderr, "usage: %s output-bin-file\n", argv[0]);
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20 exit(1);
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21 }
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22 outf = fopen(argv[1], "w");
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23 if (!outf) {
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24 perror(argv[1]);
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25 exit(1);
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26 }
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27 for (val = 0; val < 256; val++)
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28 putc(val, outf);
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29 fclose(outf);
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30 exit(0);
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31 }