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annotate libtest/robewrite.c @ 556:18aca50d68df default tip

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doc/Calypso-TCH-downlink: update for FR1 BFI-with-data
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 11 Oct 2024 01:54:00 +0000
parents 14b627682458
children
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1 /*
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2 * Here we implement our PCM write helper function for "robe" format.
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3 */
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4
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5 #include <stdio.h>
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6 #include <stdint.h>
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7 #include "robewrite.h"
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8
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9 void write_pcm_to_robe(FILE *outf, const int16_t *pcm)
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10 {
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11 uint8_t bytes[320], *dp;
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12 int16_t samp;
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13 unsigned n;
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15 dp = bytes;
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16 for (n = 0; n < 160; n++) {
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17 samp = pcm[n];
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18 *dp++ = (samp >> 8) & 0xFF;
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19 *dp++ = samp & 0xFF;
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20 }
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21 fwrite(bytes, 2, 160, outf);
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22 }