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annotate libtest/pcmwrite.c @ 282:9ee8ad3d4d30

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frtest: rm gsmfr-hand-test and gsmfr-max-out utils These hack programs were never properly documented and were written only as part of a debug chase, in pursuit of a bug that ultimately turned out to be in our then-hacky patch to osmo-bts-sysmo, before beginning of proper patches in Osmocom. These hack programs need to be dropped from the present sw package because they depend on old libgsm, and we are eliminating that dependency.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Apr 2024 05:44:47 +0000
parents a3aa152c4653
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a3aa152c4653 libtest: pcmwrite helper function and module
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1 /*
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2 * Here we implement our PCM write helper function.
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3 */
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4
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5 #include <stdint.h>
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6 #include "wavwriter.h"
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7 #include "pcmwrite.h"
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8
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9 void write_pcm_to_wav(void *wav, 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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14
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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 & 0xFF;
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19 *dp++ = (samp >> 8) & 0xFF;
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20 }
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21 wav_write_data(wav, bytes, 320);
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22 }